/* roulang page: index */
:root{
  --purple:#5B3FE8;
  --purple-dark:#3F27C4;
  --purple-light:#EDE9FF;
  --lime:#C6F135;
  --orange:#FF6B2C;
  --bg:#F6F4F1;
  --bg-soft:#FBFAF8;
  --dark:#14121F;
  --card:#FFFFFF;
  --border:#E8E4DE;
  --divider:#EFEBE6;
  --text:#1B1A24;
  --text-2:#5C5A6B;
  --text-3:#8B8898;
  --dark-text:#F2F1F7;
  --dark-text-2:#A9A6BF;
  --success:#12A66A;
  --warning:#E0A008;
  --error:#D93A3A;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow-1:0 6px 18px rgba(20,18,31,.06);
  --shadow-2:0 14px 34px rgba(20,18,31,.12);
  --shadow-3:0 18px 44px rgba(20,18,31,.35);
  --sec-y:96px;
  --font:-apple-system,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-md);}
a{color:var(--purple);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--purple-dark);}
button{font:inherit;cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;letter-spacing:.015em;color:inherit;}
h1{font-size:40px;line-height:1.25;font-weight:800;}
h2{font-size:30px;line-height:1.35;font-weight:700;}
h3{font-size:21px;line-height:1.5;font-weight:700;}
h4{font-size:18px;line-height:1.5;font-weight:700;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--purple);outline-offset:2px;border-radius:6px;}
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto;}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:16px;font-weight:600;letter-spacing:.01em;
  text-align:center;white-space:nowrap;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--purple);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--purple-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);}
.btn-lime{background:var(--lime);color:#1B1A24;box-shadow:var(--shadow-1);}
.btn-lime:hover{background:#B7E22A;color:#14121F;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-lime:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--purple);border:1.5px solid var(--purple);}
.btn-ghost:hover{background:var(--purple-light);color:var(--purple-dark);}
.btn-on-dark{background:transparent;color:var(--dark-text);border:1.5px solid rgba(242,241,247,.42);}
.btn-on-dark:hover{background:rgba(242,241,247,.12);color:#fff;border-color:rgba(242,241,247,.7);}
.btn-orange{background:var(--orange);color:#fff;border:1px solid #E5541A;box-shadow:var(--shadow-1);}
.btn-orange:hover{background:#EE5A1B;color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-lg{min-height:52px;padding:0 28px;font-size:17px;}
.btn-sm{min-height:36px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.text-link{color:var(--purple);font-weight:600;border-bottom:0;}
.text-link:hover{color:var(--purple-dark);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:4px;
  font-size:12px;font-weight:600;line-height:1;
  padding:5px 10px;border-radius:var(--radius-pill);
  white-space:nowrap;
}
.badge-purple{background:var(--purple-light);color:var(--purple-dark);}
.badge-lime{background:var(--lime);color:#14121F;}
.badge-orange{background:#FFEDE5;color:#C24210;}
.badge-gray{background:#F1EEEA;color:var(--text-2);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-stuck{border-bottom-color:var(--border);box-shadow:var(--shadow-1);}
.header-inner{
  position:relative;
  display:flex;align-items:center;
  height:72px;
}
.nav-side{display:flex;align-items:center;gap:2px;flex:1 1 0;min-width:0;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;gap:6px;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 12px;border-radius:8px;
  font-size:15px;font-weight:600;color:var(--text-2);
  transition:color .18s ease,background-color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--purple);border-radius:2px;transform:scaleX(0);transform-origin:left center;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--purple);background:var(--purple-light);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--purple);}
.nav-link.is-active::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);flex:0 0 auto;
}
.nav-link.is-active::after{transform:scaleX(1);}
.brand{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  display:inline-flex;align-items:center;gap:9px;
  font-size:19px;font-weight:800;letter-spacing:.02em;color:var(--text);
  white-space:nowrap;
}
.brand:hover{color:var(--purple);}
.brand-mark{
  width:11px;height:11px;border-radius:3px;background:var(--lime);
  box-shadow:0 0 0 3px rgba(198,241,53,.24);flex:0 0 auto;
}
.nav-cta{margin-left:8px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border:1px solid var(--border);background:#fff;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .24s ease,opacity .2s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-cta{display:none;}
.mobile-drawer{
  position:fixed;left:0;right:0;top:72px;z-index:75;
  background:#fff;border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-2);
  padding:12px 16px 20px;
  max-height:70vh;overflow-y:auto;
  transform:translateY(-12px);opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
}
.mobile-drawer.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0);}
.mobile-drawer a.m-drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;font-size:18px;font-weight:600;color:var(--text);
  border-bottom:1px solid var(--divider);
}
.mobile-drawer a.m-drawer-link.is-active{color:var(--purple);}
.mobile-drawer a.m-drawer-link.is-active::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);margin-right:8px;}
.mobile-drawer .m-drawer-link span:first-child{display:flex;align-items:center;}
.mobile-drawer .btn{margin-top:16px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:var(--dark);
  color:var(--dark-text);
  min-height:600px;
  display:flex;align-items:center;
  padding:64px 0 84px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  opacity:.22;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(0deg,rgba(20,18,31,.96),rgba(20,18,31,.72)),
                   repeating-linear-gradient(90deg,rgba(255,255,255,.035) 0 1px,transparent 1px 64px),
                   repeating-linear-gradient(0deg,rgba(255,255,255,.035) 0 1px,transparent 1px 64px);
  pointer-events:none;
}
.hero .grid-container{position:relative;z-index:2;}
.hero-copy{padding-top:8px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:#14121F;background:var(--lime);
  padding:6px 14px;border-radius:var(--radius-pill);margin-bottom:22px;
}
.hero h1{color:#fff;margin-bottom:18px;max-width:12em;}
.hero h1 em{font-style:normal;color:var(--lime);}
.hero-sub{font-size:17px;line-height:1.85;color:var(--dark-text-2);margin-bottom:30px;max-width:26em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-marks{display:flex;flex-wrap:wrap;gap:10px;}
.hero-marks li{
  font-size:13px;color:var(--dark-text-2);
  border:1px solid rgba(242,241,247,.2);
  padding:5px 12px;border-radius:var(--radius-pill);
}
.hero-visual{position:relative;margin-top:24px;}
.hero-visual-img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--radius-lg);
  opacity:.5;
  border:1px solid rgba(255,255,255,.08);
}
.hero-visual-inner{position:relative;}
.login-card{
  position:relative;margin-top:-180px;margin-left:auto;margin-right:auto;
  width:min(100%,360px);
  background:#fff;color:var(--text);
  border-radius:var(--radius-lg);
  border:1px solid var(--border);
  box-shadow:var(--shadow-3);
  padding:26px 24px 22px;
}
.login-card h3{font-size:19px;margin-bottom:4px;color:var(--text);}
.login-card .login-hint{font-size:13px;color:var(--text-3);margin-bottom:18px;}
.login-form label{display:block;font-size:13px;color:var(--text-2);margin-bottom:6px;font-weight:600;}
.login-form input{
  width:100%;height:46px;margin-bottom:14px;
  border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:0 14px;font-size:15px;color:var(--text);background:#fff;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.login-form input::placeholder{color:var(--text-3);}
.login-form input:focus{outline:none;border-color:var(--purple);box-shadow:0 0 0 3px var(--purple-light);}
.login-form .btn{margin-top:4px;}
.login-terms{font-size:12px;line-height:1.7;color:var(--text-3);margin-top:14px;margin-bottom:0;}
.login-terms a{color:var(--purple);}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:20px;}
.stat-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(242,241,247,.08);
  border:1px solid rgba(242,241,247,.16);
  border-radius:var(--radius-md);
  padding:8px 14px;font-size:13px;color:var(--dark-text-2);
}
.stat-badge strong{font-size:18px;color:var(--lime);font-weight:700;}

/* ---------- 板块 ---------- */
main{display:block;}
.section{padding:var(--sec-y) 0;}
.section-soft{background:var(--bg-soft);}
.section-dark{background:var(--dark);color:var(--dark-text);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap;}
.section-eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--purple-dark);background:var(--purple-light);
  padding:5px 12px;border-radius:var(--radius-pill);margin-bottom:14px;
}
.section-head h2{margin-bottom:8px;}
.section-head p{color:var(--text-2);font-size:16px;max-width:44em;margin-bottom:0;}
.section-dark .section-head p{color:var(--dark-text-2);}
.more-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--purple);
}
.more-link:hover{color:var(--purple-dark);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;}

/* ---------- 权益对比表 ---------- */
.compare-wrap{background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow-1);overflow:hidden;}
.compare-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
table.compare{width:100%;min-width:760px;border-collapse:collapse;font-size:15px;line-height:1.6;}
table.compare th,table.compare td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--divider);}
table.compare thead th{
  background:var(--purple-light);color:var(--purple-dark);font-weight:700;white-space:nowrap;
  font-size:15px;
}
table.compare thead th:first-child{color:var(--text-2);}
table.compare tbody tr:nth-child(even){background:var(--bg-soft);}
table.compare tbody tr:hover{background:var(--bg);}
table.compare td:first-child{font-weight:600;color:var(--text);}
table.compare tbody tr:hover td:first-child{box-shadow:inset 3px 0 0 var(--purple);}
.cell-yes{color:var(--success);font-weight:600;}
.cell-no{color:var(--text-3);}
.th-rec{position:relative;}
.th-rec::after{
  content:"推荐";position:absolute;top:-1px;right:12px;
  background:var(--lime);color:#14121F;
  font-size:11px;font-weight:700;line-height:1;
  padding:4px 8px;border-radius:0 0 8px 8px;
}
.compare-note{font-size:13px;color:var(--text-3);margin-top:14px;}

/* ---------- 等级亮点 ---------- */
.tier-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,auto);gap:20px;}
.tier-main{
  grid-column:1/3;grid-row:1/4;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);padding:32px;display:flex;flex-direction:column;
  position:relative;overflow:hidden;
}
.tier-main::before{
  content:"";position:absolute;right:-40px;top:-40px;width:180px;height:180px;
  background:var(--purple-light);border-radius:50%;opacity:.7;
}
.tier-main>*{position:relative;z-index:1;}
.tier-main h3{font-size:26px;margin:14px 0 10px;}
.tier-main .tier-lead{font-size:16px;color:var(--text-2);margin-bottom:22px;}
.tier-points{margin-bottom:26px;display:grid;gap:12px;}
.tier-points li{display:flex;gap:10px;font-size:15px;color:var(--text-2);line-height:1.8;}
.tier-points li::before{
  content:"";flex:0 0 auto;width:7px;height:7px;border-radius:50%;
  background:var(--purple);margin-top:.7em;
}
.tier-main .btn{align-self:flex-start;margin-top:auto;}
.tier-card-sm{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);padding:20px;
  display:flex;flex-direction:column;gap:8px;
  transition:transform .32s ease,box-shadow .32s ease,border-color .32s ease;
}
.tier-card-sm:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(91,63,232,.3);}
.tier-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:9px;
  background:var(--lime);color:#14121F;font-weight:800;font-size:14px;
}
.tier-card-sm h3{font-size:17px;}
.tier-card-sm p{font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:0;}

/* ---------- 专属内容预览 ---------- */
.gallery-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.gallery-item{
  margin:0;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .32s ease,box-shadow .32s ease,border-color .32s ease;
}
.gallery-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(91,63,232,.3);}
.gallery-thumb{overflow:hidden;aspect-ratio:16/9;background:var(--purple-light);}
.gallery-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.gallery-item:hover .gallery-thumb img{transform:scale(1.03);}
.gallery-body{padding:20px 22px 22px;}
.gallery-body h4{margin:10px 0 6px;}
.gallery-body p{font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:0;}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.filter-bar span{
  font-size:14px;font-weight:600;padding:7px 16px;border-radius:var(--radius-pill);
  border:1px solid var(--border);color:var(--text-2);background:#fff;
}
.filter-bar span.is-current{background:var(--purple);border-color:var(--purple);color:#fff;}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:22px;}
.news-feature{
  display:block;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-1);
  overflow:hidden;color:var(--text);
  transition:transform .32s ease,box-shadow .32s ease,border-color .32s ease;
}
.news-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(91,63,232,.3);color:var(--text);}
.news-feature-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--purple-light);}
.news-feature-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.news-feature-body{padding:24px;}
.news-feature-body h3{margin:12px 0 10px;font-size:22px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-feature-body p{font-size:15px;color:var(--text-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px;}
.news-side{display:flex;flex-direction:column;gap:12px;}
.news-compact{
  display:block;padding:16px 18px 16px 20px;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-md);
  border-left:3px solid var(--purple);
  color:var(--text);
  transition:background-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.news-compact:hover{background:var(--bg);transform:translateX(3px);box-shadow:var(--shadow-1);color:var(--text);}
.news-compact h3{font-size:16px;line-height:1.6;margin-bottom:6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-compact p{font-size:13px;color:var(--text-2);line-height:1.7;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-3);}
.news-meta time{color:var(--text-3);}
.empty-state{
  border:1px dashed var(--border);border-radius:var(--radius-lg);
  background:#fff;padding:52px 24px;text-align:center;
}
.empty-state .empty-icon{
  width:48px;height:48px;margin:0 auto 16px;border-radius:14px;
  border:2px solid var(--purple-light);background:var(--purple-light);
  display:flex;align-items:center;justify-content:center;
  color:var(--purple);font-size:22px;font-weight:700;
}
.empty-state p{color:var(--text-2);margin-bottom:18px;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-md);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(91,63,232,.3);box-shadow:var(--shadow-1);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:14px 22px;
  font-size:17px;font-weight:600;color:var(--text);
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";flex:0 0 auto;width:12px;height:12px;
  border-right:2px solid var(--purple);border-bottom:2px solid var(--purple);
  transform:rotate(45deg);transition:transform .24s ease;margin-top:-5px;
}
.faq-item[open] summary::after{transform:rotate(-135deg);margin-top:5px;}
.faq-item summary:hover{color:var(--purple);}
.faq-answer{padding:0 22px 20px;color:var(--text-2);font-size:15px;line-height:1.85;}
.faq-answer p{margin-bottom:.9em;}
.faq-answer p:last-child{margin-bottom:0;}

/* ---------- 开通会员 CTA ---------- */
.cta-band{position:relative;overflow:hidden;padding:88px 0;background:var(--dark);color:var(--dark-text);}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;opacity:.2;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(0deg,rgba(20,18,31,.96),rgba(20,18,31,.78));
}
.cta-band .grid-container{position:relative;z-index:2;}
.cta-panel{
  display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(242,241,247,.14);
  border-radius:var(--radius-lg);
  padding:44px;
}
.cta-panel h2{color:#fff;margin-bottom:14px;}
.cta-panel p{color:var(--dark-text-2);font-size:16px;line-height:1.85;margin-bottom:0;max-width:34em;}
.cta-actions{display:flex;flex-direction:column;gap:14px;}
.price-tag{
  display:inline-flex;align-items:baseline;gap:6px;
  color:var(--orange);font-weight:800;font-size:30px;line-height:1;
}
.price-tag small{font-size:13px;color:var(--dark-text-2);font-weight:500;}
.cta-actions .btn-block{width:100%;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--dark-text-2);padding:72px 0 0;}
.footer-grid{row-gap:36px;}
.footer-logo{
  display:inline-flex;align-items:center;gap:9px;
  font-size:19px;font-weight:800;color:#fff;letter-spacing:.02em;margin-bottom:16px;
}
.footer-logo:hover{color:var(--lime);}
.footer-logo .brand-mark{width:11px;height:11px;border-radius:3px;background:var(--lime);flex:0 0 auto;}
.footer-desc{font-size:14px;line-height:1.85;color:var(--dark-text-2);max-width:30em;margin-bottom:18px;}
.footer-socials{display:flex;gap:10px;}
.footer-socials a{
  width:38px;height:38px;border-radius:10px;
  border:1px solid rgba(242,241,247,.18);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:600;color:var(--dark-text-2);
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.footer-socials a:hover{background:rgba(198,241,53,.14);color:#fff;border-color:rgba(198,241,53,.5);}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{
  position:relative;display:inline-block;
  font-size:14px;color:var(--dark-text-2);padding-left:0;
  transition:color .2s ease,padding-left .2s ease;
}
.footer-col a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--lime);border-radius:2px;
  transition:height .2s ease;
}
.footer-col a:hover{color:#fff;padding-left:10px;}
.footer-col a:hover::before{height:14px;}
.footer-bottom{
  margin-top:52px;padding:22px 0 26px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:var(--text-3);
}
.footer-bottom p{margin:0;}

/* ---------- 回顶 ---------- */
.back-top{
  position:fixed;right:22px;bottom:26px;z-index:90;
  width:44px;height:44px;border-radius:50%;
  background:var(--purple);color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s ease,transform .24s ease,visibility .24s,background-color .18s ease;
}
.back-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{background:var(--purple-dark);}
.back-top svg{width:18px;height:18px;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .42s ease,transform .42s ease;}
.reveal.is-in{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;}
  html{scroll-behavior:auto;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sec-y:80px;}
  .cta-panel{padding:36px;}
}
@media (max-width:1023px){
  :root{--sec-y:72px;}
  h1{font-size:32px;}
  h2{font-size:25px;}
  .nav-left,.nav-right{display:none;}
  .nav-toggle{display:flex;}
  .mobile-cta{display:inline-flex;}
  .brand{position:static;transform:none;font-size:16px;flex:1 1 auto;justify-content:center;}
  .header-inner{gap:12px;}
  .nav-toggle{order:-1;}
  .hero{min-height:auto;padding:48px 0 72px;}
  .hero-visual{margin-top:36px;}
  .login-card{margin-top:0;width:100%;max-width:420px;}
  .hero-visual-img{display:none;}
  .hero-badges{justify-content:flex-start;}
  .news-grid{grid-template-columns:1fr;}
  .cta-panel{grid-template-columns:1fr;gap:28px;}
  .tier-grid{grid-template-columns:repeat(2,1fr);grid-template-rows:auto;}
  .tier-main{grid-column:1/3;grid-row:auto;}
  .gallery-grid{grid-template-columns:repeat(2,1fr);gap:18px;}
  .site-footer{padding-top:56px;}
}
@media (max-width:639px){
  :root{--sec-y:56px;--gutter:16px;}
  body{font-size:16px;}
  h1{font-size:28px;}
  h2{font-size:23px;}
  h3{font-size:18px;}
  h4{font-size:16px;}
  .grid-container{padding-left:16px;padding-right:16px;}
  .brand{font-size:14px;letter-spacing:0;}
  .header-inner{height:64px;}
  .mobile-drawer{top:64px;}
  .hero{padding:36px 0 56px;}
  .hero h1{max-width:none;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 100%;}
  .hero-marks li{font-size:12px;}
  .section-head{margin-bottom:28px;}
  .gallery-grid{grid-template-columns:1fr;}
  .tier-grid{grid-template-columns:1fr;}
  .tier-main{padding:24px;}
  .tier-main h3{font-size:22px;}
  .news-feature-body{padding:18px;}
  .news-feature-body h3{font-size:19px;}
  .faq-item summary{font-size:16px;padding:14px 16px;}
  .faq-answer{padding:0 16px 18px;}
  .cta-panel{padding:24px;}
  .price-tag{font-size:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .back-top{right:14px;bottom:16px;}
}

/* roulang page: category1 */
:root{
  --brand:#5B3FE8;
  --brand-dark:#3F27C4;
  --brand-soft:#EDE9FF;
  --lime:#C6F135;
  --lime-deep:#9FCC14;
  --orange:#FF6B2C;
  --bg:#F6F4F1;
  --bg-soft:#FBFAF8;
  --ink:#1B1A24;
  --ink-2:#5C5A6B;
  --ink-3:#8B8898;
  --dark:#14121F;
  --dark-2:#A9A6BF;
  --dark-3:#F2F1F7;
  --card:#FFFFFF;
  --line:#E8E4DE;
  --line-soft:#EFEBE6;
  --ok:#12A66A;
  --warn:#E0A008;
  --err:#D93A3A;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --sh-1:0 6px 18px rgba(20,18,31,.06);
  --sh-2:0 14px 34px rgba(20,18,31,.12);
  --sh-3:0 18px 44px rgba(20,18,31,.35);
  --ease:180ms ease-out;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),border-color var(--ease);}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:.015em;}
h1{font-size:40px;line-height:1.25;font-weight:800;}
h2{font-size:30px;line-height:1.35;margin-top:2.4em;margin-bottom:.8em;}
h3{font-size:21px;line-height:1.5;margin-top:1.8em;margin-bottom:.6em;}
h4{font-size:18px;line-height:1.6;margin-bottom:.5em;}
p{margin:0 0 1.2em;text-align:left;}
ul,ol{margin:0 0 1.2em;padding-left:1.2em;}
li{margin-bottom:.5em;line-height:1.85;}

/* ---------- 容器与栅格 ---------- */
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto;}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px;}
.grid-margin-y{margin-top:-12px;margin-bottom:-12px;}
.grid-margin-y>.cell{padding-top:12px;padding-bottom:12px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:16px;font-weight:600;letter-spacing:.01em;
  border:1.5px solid transparent;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-lime{background:var(--lime);color:var(--dark);box-shadow:var(--sh-1);}
.btn-lime:hover{background:var(--lime-deep);color:var(--dark);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand-dark);}
.btn-ghost-light{background:transparent;color:#F2F1F7;border-color:rgba(242,241,247,.45);}
.btn-ghost-light:hover{background:rgba(242,241,247,.12);color:#fff;border-color:#fff;}
.btn-block{width:100%;}
.btn-lg{min-height:52px;padding:0 28px;font-size:17px;}
.btn-sm{min-height:36px;padding:0 16px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

.text-link{color:var(--brand);font-weight:600;border-bottom:2px solid transparent;padding-bottom:2px;}
.text-link:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;line-height:1;
  padding:5px 10px;border-radius:999px;letter-spacing:.02em;
}
.badge-lime{background:var(--lime);color:#241C1C;}
.badge-purple{background:var(--brand-soft);color:var(--brand-dark);}
.badge-orange{background:#FFEDE4;color:#C64A12;}
.badge-soft{background:#F1EEE9;color:var(--ink-2);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  height:72px;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease),box-shadow var(--ease);
  --nav-fg:#F2F1F7;
  --nav-fg-hover:#FFFFFF;
  --nav-fg-active:var(--lime);
  --nav-dot:var(--lime);
  --brand-fg:#FFFFFF;
}
.site-header.is-solid{
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
  --nav-fg:#1B1A24;
  --nav-fg-hover:var(--brand);
  --nav-fg-active:var(--brand);
  --nav-dot:var(--brand);
  --brand-fg:#1B1A24;
}
.header-inner{
  height:72px;display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;gap:16px;
}
.nav-side{display:flex;align-items:center;gap:26px;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;gap:22px;}
.nav-link{
  position:relative;font-size:16px;font-weight:500;
  color:var(--nav-fg);padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--nav-fg-active);transition:width var(--ease);
}
.nav-link:hover{color:var(--nav-fg-hover);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--nav-fg-active);font-weight:600;}
.nav-link.is-active::before{
  content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--nav-dot);margin-right:7px;vertical-align:middle;
}
.nav-link.is-active::after{width:0;}
.nav-link:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px;}

.brand{display:flex;align-items:center;gap:10px;justify-self:center;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;right:6px;bottom:6px;width:10px;height:10px;
  border-radius:3px;background:var(--lime);
}
.brand-text{
  display:flex;flex-direction:column;line-height:1.15;
  font-weight:800;font-size:16px;letter-spacing:.02em;color:var(--brand-fg);
}
.brand-text span:last-child{font-size:13px;font-weight:600;opacity:.85;letter-spacing:.06em;}

.nav-cta{margin-left:6px;}

.nav-toggle{
  display:none;width:44px;height:44px;border:0;background:transparent;
  padding:0;cursor:pointer;justify-self:start;border-radius:10px;
}
.nav-toggle span{
  display:block;width:22px;height:2px;margin:5px auto;border-radius:2px;
  background:var(--nav-fg);transition:transform var(--ease),opacity var(--ease);
}
.nav-toggle:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mobile-drawer{
  display:none;position:absolute;left:0;right:0;top:72px;
  background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh-2);
  padding:12px 16px 20px;
  max-height:70vh;overflow-y:auto;
}
.mobile-drawer.is-open{display:block;}
.drawer-link{
  display:flex;align-items:center;height:52px;font-size:18px;font-weight:500;
  color:var(--ink);border-bottom:1px solid var(--line-soft);
}
.drawer-link.is-active{color:var(--brand);font-weight:700;}
.drawer-link.is-active::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--brand);margin-right:8px;
}
.drawer-cta{margin-top:16px;width:100%;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  margin-top:-72px;
  padding:150px 0 76px;
  background:var(--dark);
  overflow:hidden;
  color:var(--dark-3);
}
.page-hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.22;filter:saturate(.9);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
}
.page-hero-inner{position:relative;z-index:2;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--dark-2);margin-bottom:18px;
}
.breadcrumb a{color:var(--dark-2);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .crumb-sep{opacity:.5;}
.breadcrumb .crumb-current{color:#fff;}
.page-hero h1{color:#fff;max-width:840px;}
.page-hero-sub{
  color:var(--dark-2);font-size:17px;line-height:1.85;
  margin:16px 0 26px;max-width:700px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}

/* ---------- 主体布局 ---------- */
.page-body{padding:72px 0 88px;}
.sidebar-inner{position:sticky;top:96px;}
.panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--sh-1);
}
.panel+.panel{margin-top:20px;}
.panel h3{font-size:17px;margin:0 0 14px;letter-spacing:.02em;}
.anchor-list{list-style:none;margin:0;padding:0;}
.anchor-list li{margin:0;}
.anchor-list a{
  display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:var(--r-md);
  font-size:15px;color:var(--ink-2);border-left:2px solid transparent;
}
.anchor-list a:hover{background:var(--bg);color:var(--brand-dark);border-left-color:var(--brand);}
.anchor-list a:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.anchor-list .num{
  font-size:12px;font-weight:700;color:var(--brand-dark);
  background:var(--brand-soft);border-radius:6px;padding:2px 6px;min-width:24px;text-align:center;
}
.mini-card .badge{margin-bottom:12px;}
.mini-card p{font-size:14px;line-height:1.8;color:var(--ink-2);margin-bottom:12px;}

.content-col h2:first-child{margin-top:0;}
.lead-p{color:var(--ink-2);font-size:16.5px;}

/* 清单 */
.check-list{list-style:none;padding:0;margin:0;}
.check-list li{
  position:relative;padding-left:34px;margin-bottom:14px;
  font-size:16px;line-height:1.85;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:7px;
  width:20px;height:20px;border-radius:6px;
  background:var(--brand-soft);
  border:1px solid rgba(91,63,232,.25);
}
.check-list li::after{
  content:"";position:absolute;left:6px;top:12px;
  width:8px;height:4px;border-left:2px solid var(--brand);
  border-bottom:2px solid var(--brand);transform:rotate(-45deg);
}

/* 图文交错 */
.stagger{
  display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:center;
  margin:36px 0;
}
.stagger.reverse{grid-template-columns:7fr 5fr;}
.stagger-figure{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-1);background:#fff;
}
.stagger-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform 400ms ease-out;}
.stagger-figure:hover img{transform:scale(1.03);}
.stagger-text h3{margin-top:0;font-size:20px;}
.stagger-text p{font-size:16px;color:var(--ink-2);margin-bottom:.9em;}
.stagger-text .badge{margin-bottom:12px;}

/* 步骤列表 */
.step-list{list-style:none;padding:0;margin:0;counter-reset:step;}
.step-list li{
  position:relative;padding:0 0 0 62px;margin-bottom:26px;min-height:44px;
}
.step-list li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:0;
  width:44px;height:44px;border-radius:12px;
  background:var(--lime);color:#231A00;
  font-size:15px;font-weight:800;letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;
}
.step-list li:not(:last-child)::after{
  content:"";position:absolute;left:21px;top:52px;bottom:-20px;width:2px;
  background:linear-gradient(180deg,rgba(91,63,232,.3),rgba(91,63,232,.05));
}
.step-list h3{margin:0 0 6px;font-size:18px;}
.step-list p{margin:0;font-size:15.5px;color:var(--ink-2);}

/* 表格 */
.table-wrap{
  border:1px solid var(--line);border-radius:14px;overflow-x:auto;
  background:#fff;box-shadow:var(--sh-1);margin:24px 0 12px;
}
table{width:100%;border-collapse:collapse;font-size:15px;line-height:1.6;min-width:640px;}
thead th{
  background:var(--brand-soft);color:var(--brand-dark);
  font-weight:700;text-align:left;padding:14px 16px;
  border-bottom:1px solid var(--line);white-space:nowrap;
}
tbody td{padding:14px 16px;border-bottom:1px solid var(--line-soft);vertical-align:top;color:var(--ink-2);}
tbody tr:nth-child(even){background:var(--bg-soft);}
tbody tr:hover{background:var(--bg);}
tbody tr:hover td:first-child{box-shadow:inset 3px 0 0 var(--brand);}
tbody td:first-child{color:var(--ink);font-weight:600;position:sticky;left:0;background:inherit;min-width:150px;}
tbody tr:last-child td{border-bottom:0;}
.table-note{font-size:13px;color:var(--ink-3);margin-bottom:0;}

/* 表单 */
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);margin-top:24px;
}
.field{margin-bottom:18px;}
.field label{
  display:block;font-size:13px;color:var(--ink-2);font-weight:600;
  margin-bottom:8px;letter-spacing:.02em;
}
.field input{
  width:100%;height:46px;padding:0 14px;font-size:16px;
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;color:var(--ink);transition:border-color var(--ease),box-shadow var(--ease);
}
.field input::placeholder{color:var(--ink-3);}
.field input:focus{
  outline:none;border-color:var(--brand);border-width:1.5px;
  box-shadow:0 0 0 2px var(--brand-soft);
}
.field input.is-error{border-color:var(--err);box-shadow:0 0 0 2px rgba(217,58,58,.12);}
.field-inline{display:flex;gap:12px;align-items:stretch;}
.field-inline input{flex:1 1 auto;}
.form-note{font-size:12px;color:var(--ink-3);line-height:1.75;margin:14px 0 0;}
.form-note a{color:var(--brand);}

/* FAQ */
.faq-section{padding:0 0 88px;}
.faq-head{max-width:720px;margin-bottom:26px;}
.faq-head h2{margin-top:0;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  list-style:none;cursor:pointer;padding:20px 4px;
  font-size:17px;font-weight:600;color:var(--ink);
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.faq-item summary::after{
  content:"";flex:0 0 12px;width:12px;height:12px;
  border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:rotate(45deg);transition:transform 240ms ease-out;margin-right:4px;
}
.faq-item[open] summary::after{transform:rotate(-135deg);}
.faq-answer{padding:0 4px 22px;font-size:15.5px;line-height:1.85;color:var(--ink-2);}
.faq-answer p:last-child{margin-bottom:0;}

/* 相关分类 */
.rel-section{padding:0 0 88px;}
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:26px;}
.rel-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform 400ms ease-out,box-shadow 400ms ease-out,border-color 400ms ease-out;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(91,63,232,.3);}
.rel-thumb{overflow:hidden;aspect-ratio:16/9;}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease-out;}
.rel-card:hover .rel-thumb img{transform:scale(1.03);}
.rel-body{padding:16px 18px 20px;}
.rel-body h3{margin:0 0 6px;font-size:16px;}
.rel-body p{margin:0;font-size:13.5px;color:var(--ink-3);line-height:1.7;}

/* 深色 CTA */
.cta-band{
  background:var(--dark);color:var(--dark-3);
  padding:72px 0;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;
  border-radius:50%;background:rgba(91,63,232,.28);filter:blur(6px);
}
.cta-inner{
  position:relative;z-index:2;display:flex;flex-wrap:wrap;
  align-items:center;justify-content:space-between;gap:28px;
}
.cta-copy{max-width:640px;}
.cta-copy h2{color:#fff;margin:0 0 10px;}
.cta-copy p{color:var(--dark-2);margin:0;font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* 页脚 */
.site-footer{background:var(--dark);color:var(--dark-2);padding:64px 0 0;}
.footer-grid{padding-bottom:44px;}
.footer-logo{
  display:flex;align-items:center;gap:10px;color:#fff;
  font-weight:800;font-size:16px;letter-spacing:.02em;margin-bottom:16px;
}
.footer-logo .brand-mark{width:30px;height:30px;flex:0 0 30px;border-radius:9px;}
.footer-desc{font-size:14px;line-height:1.85;color:var(--dark-2);margin-bottom:18px;max-width:300px;}
.footer-socials{display:flex;gap:14px;flex-wrap:wrap;}
.footer-socials a{font-size:13px;color:var(--dark-2);border:1px solid rgba(255,255,255,.16);border-radius:999px;padding:5px 14px;}
.footer-socials a:hover{color:#fff;border-color:rgba(198,241,53,.7);}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;margin:0 0 16px;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{
  display:inline-block;font-size:14px;color:var(--dark-2);
  padding-left:0;border-left:2px solid transparent;padding-left:0;
  transition:color var(--ease),padding-left var(--ease),border-color var(--ease);
}
.footer-col a:hover{color:#fff;padding-left:10px;border-left:2px solid var(--lime);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:10px;
  justify-content:space-between;font-size:12px;color:var(--ink-3);
}
.footer-bottom p{margin:0;font-size:12px;color:var(--ink-3);}

/* 回顶 */
.to-top{
  position:fixed;right:20px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--brand);color:#fff;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease),background var(--ease),transform var(--ease);
  z-index:70;
}
.to-top:hover{background:var(--brand-dark);transform:translateY(-2px);}
.to-top.is-visible{opacity:1;visibility:visible;}
.to-top:focus-visible{outline:2px solid #fff;outline-offset:2px;}
.to-top svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 420ms ease-out,transform 420ms ease-out;}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .rel-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  .nav-side{display:none;}
  .nav-toggle{display:block;}
  .header-inner{grid-template-columns:auto 1fr auto;gap:10px;}
  .brand{justify-self:center;}
  .nav-cta{display:none;}
  .brand-text{font-size:15px;}
  .brand-text span:last-child{font-size:12px;}
  h1{font-size:30px;}
  h2{font-size:23px;}
  .page-hero{padding:132px 0 60px;}
  .page-body{padding:56px 0 64px;}
  .sidebar-inner{position:static;margin-bottom:32px;}
  .stagger,.stagger.reverse{grid-template-columns:1fr;gap:22px;}
  .stagger.reverse .stagger-figure{order:2;}
  .stagger.reverse .stagger-text{order:1;}
  .faq-section,.rel-section{padding-bottom:64px;}
  .cta-band{padding:56px 0;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:639px){
  body{font-size:16px;line-height:1.85;}
  .grid-container{padding-left:16px;padding-right:16px;}
  .grid-margin-x{margin-left:-8px;margin-right:-8px;}
  .grid-margin-x>.cell{padding-left:8px;padding-right:8px;}
  h1{font-size:26px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  h4{font-size:16px;}
  .page-hero{padding:120px 0 52px;}
  .page-hero-sub{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .rel-grid{grid-template-columns:1fr;gap:16px;}
  .form-card{padding:20px;}
  .field-inline{flex-direction:column;}
  .field-inline .btn{width:100%;}
  .step-list li{padding-left:54px;}
  .step-list li::before{width:38px;height:38px;font-size:13px;}
  .step-list li:not(:last-child)::after{left:18px;top:44px;}
  .footer-bottom{flex-direction:column;}
  .to-top{right:14px;bottom:16px;}
}

/* roulang page: article */
/* ================= 设计变量 ================= */
:root{
  --c-primary:#5B3FE8;
  --c-primary-dark:#3F27C4;
  --c-primary-light:#EDE9FF;
  --c-lime:#C6F135;
  --c-orange:#FF6B2C;
  --c-orange-dark:#E85A1E;
  --c-bg:#F6F4F1;
  --c-bg-soft:#FBFAF8;
  --c-dark:#14121F;
  --c-card:#FFFFFF;
  --c-border:#E8E4DE;
  --c-divider:#EFEBE6;
  --c-text:#1B1A24;
  --c-text-2:#5C5A6B;
  --c-text-3:#8B8898;
  --c-dtext:#F2F1F7;
  --c-dtext-2:#A9A6BF;
  --c-success:#12A66A;
  --c-warning:#E0A008;
  --c-danger:#D93A3A;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 6px 18px rgba(20,18,31,.06);
  --sh-2:0 14px 34px rgba(20,18,31,.12);
  --sh-3:0 18px 44px rgba(20,18,31,.35);
  --sec:96px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
@media (max-width:1023px){ :root{ --sec:76px; } }
@media (max-width:639px){ :root{ --sec:58px; } }

/* ================= Reset / Base ================= */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.9;
  text-align:left;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:700;letter-spacing:.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s var(--ease);}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
table{border-collapse:collapse;width:100%;}
time{font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
::selection{background:var(--c-primary-light);color:var(--c-primary-dark);}

/* ================= 容器与栅格间距 ================= */
.grid-container{width:100%;max-width:1200px;margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px;}
@media (max-width:639px){ .grid-container{padding-left:16px;padding-right:16px;} }

.grid-x.gap{margin-left:-12px;margin-right:-12px;}
.grid-x.gap > .cell{padding-left:12px;padding-right:12px;}
@media (max-width:1023px){
  .grid-x.gap{margin-left:-10px;margin-right:-10px;}
  .grid-x.gap > .cell{padding-left:10px;padding-right:10px;}
}
@media (max-width:639px){
  .grid-x.gap{margin-left:-8px;margin-right:-8px;}
  .grid-x.gap > .cell{padding-left:8px;padding-right:8px;}
}

/* ================= 通用按钮 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1.5px solid transparent;cursor:pointer;text-align:center;
  transition:background-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-outline{background:#fff;border-color:var(--c-primary);color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-light);color:var(--c-primary-dark);transform:translateY(-2px);}
.btn-lime{background:var(--c-lime);color:var(--c-dark);}
.btn-lime:hover{background:#B8E429;color:var(--c-dark);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-orange{background:var(--c-orange);border-color:var(--c-orange-dark);color:#fff;}
.btn-orange:hover{background:var(--c-orange-dark);color:#fff;transform:translateY(-2px);}
.btn-sm{min-height:36px;padding:0 16px;font-size:14px;}
.btn-lg{min-height:52px;padding:0 28px;font-size:16px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none!important;box-shadow:none!important;}

/* ================= 徽章 / 标签 ================= */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:var(--r-pill);font-size:12px;font-weight:600;line-height:1.6;}
.badge-lime{background:var(--c-lime);color:var(--c-dark);}
.badge-primary{background:var(--c-primary-light);color:var(--c-primary-dark);}
.badge-ghost{background:rgba(255,255,255,.08);color:var(--c-dtext-2);border:1px solid rgba(255,255,255,.14);}
.badge-dot::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary);}

/* ================= 顶部导航 ================= */
.site-header{
  position:sticky;top:0;z-index:80;background:var(--c-card);
  border-bottom:1px solid var(--c-border);
  transition:box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  height:72px;gap:10px;
}
.nav-side{display:flex;align-items:center;gap:2px;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 12px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--c-text-2);white-space:nowrap;
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;
  background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;padding-left:22px;}
.nav-link.is-active::before{
  content:"";position:absolute;left:9px;top:50%;width:6px;height:6px;margin-top:-3px;
  border-radius:50%;background:var(--c-lime);
}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;justify-content:flex-end;gap:10px;}

.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;padding:2px 6px;}
.brand-mark{
  position:relative;flex:0 0 auto;width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-dark));
}
.brand-mark::after{
  content:"";position:absolute;left:11px;top:11px;width:12px;height:12px;
  border-radius:3px;background:var(--c-lime);transform:rotate(45deg);
}
.brand-text{
  display:flex;flex-direction:column;line-height:1.12;
  font-size:16px;font-weight:800;color:var(--c-text);letter-spacing:.02em;
}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  transition:background-color .18s var(--ease);
}
.menu-toggle:hover{background:var(--c-primary-light);}
.menu-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--c-text);transition:transform .25s var(--ease),opacity .2s var(--ease);}
.menu-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.menu-toggle.is-open span:nth-child(2){opacity:0;}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mobile-drawer{
  position:fixed;left:0;right:0;top:72px;z-index:79;max-height:70vh;overflow-y:auto;
  background:var(--c-card);border-top:1px solid var(--c-border);
  box-shadow:var(--sh-2);padding:8px 16px 22px;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-link{
  display:flex;align-items:center;min-height:52px;padding:0 4px;
  font-size:18px;font-weight:600;color:var(--c-text);
  border-bottom:1px solid var(--c-divider);
}
.drawer-link:hover,.drawer-link.is-active{color:var(--c-primary);}
.drawer-cta{margin-top:18px;}
@media (min-width:1024px){ .mobile-drawer{display:none;} }

@media (max-width:1023px){
  .header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;}
  .nav-side{display:none;}
  .menu-toggle{display:flex;}
  .brand{position:absolute;left:50%;transform:translateX(-50%);}
  .brand-text{font-size:14px;}
  .brand-mark{width:28px;height:28px;border-radius:8px;}
  .brand-mark::after{left:9px;top:9px;width:10px;height:10px;}
  .header-actions .btn{padding:0 14px;min-height:38px;font-size:13px;}
  .site-header{position:sticky;}
}

/* ================= 页面页头 ================= */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--c-dark);color:var(--c-dtext);
  padding:42px 0 38px;min-height:184px;display:flex;align-items:center;
}
.page-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.24;}
.page-hero-veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,18,31,.45) 0%,rgba(20,18,31,.92) 100%);}
.page-hero-grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:44px 44px;
}
.page-hero-inner{position:relative;z-index:2;width:100%;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-dtext-2);margin-bottom:16px;}
.breadcrumb a{color:var(--c-dtext-2);}
.breadcrumb a:hover{color:#FFFFFF;}
.breadcrumb .sep{opacity:.45;}
.breadcrumb .current{color:var(--c-dtext);}
.page-hero-kicker{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:var(--r-pill);font-size:12px;font-weight:600;
  background:rgba(198,241,53,.14);color:var(--c-lime);border:1px solid rgba(198,241,53,.32);
  margin-bottom:14px;
}
.page-hero-title{font-size:22px;font-weight:700;color:var(--c-dtext);line-height:1.5;letter-spacing:.01em;}
@media (max-width:639px){
  .page-hero{padding:28px 0 26px;min-height:150px;}
  .page-hero-title{font-size:18px;}
}

/* ================= 文章布局 ================= */
.article-wrap{padding-top:40px;padding-bottom:76px;}
.article-main{min-width:0;}
.article-card{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:38px 42px 46px;
}
.article-title{
  font-size:40px;line-height:1.25;font-weight:800;letter-spacing:.01em;
  margin-bottom:18px;word-break:break-word;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:14px;color:var(--c-text-3);}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:8px;}
.article-meta .meta-dot{width:5px;height:5px;border-radius:50%;background:var(--c-lime);}
.article-rule{height:1px;background:var(--c-divider);margin:24px 0 26px;}

.article-body{max-width:780px;font-size:17px;line-height:1.9;color:var(--c-text);text-align:left;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{font-size:30px;line-height:1.35;font-weight:700;margin:2.4em 0 .8em;letter-spacing:.01em;}
.article-body h3{font-size:21px;line-height:1.5;font-weight:700;margin:1.8em 0 .6em;}
.article-body h4{font-size:18px;line-height:1.6;font-weight:700;margin:1.5em 0 .5em;}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.5em;}
.article-body ul li{list-style:disc;margin-bottom:.55em;line-height:1.85;}
.article-body ol li{list-style:decimal;margin-bottom:.55em;line-height:1.85;}
.article-body li::marker{color:var(--c-primary);}
.article-body strong{font-weight:600;color:var(--c-text);}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(91,63,232,.3);}
.article-body a:hover{border-bottom-color:var(--c-primary);}
.article-body blockquote{
  margin:1.8em 0;padding:18px 22px;border-left:3px solid var(--c-lime);
  background:var(--c-bg-soft);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--c-text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-md);margin:1.6em auto;height:auto;}
.article-body figure{margin:1.8em 0;}
.article-body figcaption{font-size:13px;color:var(--c-text-3);text-align:center;margin-top:10px;line-height:1.7;}
.article-body table{margin:1.8em 0;font-size:15px;border:1px solid var(--c-border);border-radius:var(--r-md);overflow:hidden;}
.article-body thead th{background:var(--c-primary-light);color:var(--c-primary-dark);font-weight:700;text-align:left;padding:14px 16px;line-height:1.6;}
.article-body tbody td{padding:14px 16px;border-top:1px solid var(--c-divider);line-height:1.6;color:var(--c-text-2);}
.article-body tbody tr:nth-child(even){background:#FBFAF8;}
.article-body tbody tr:hover{background:var(--c-bg);}
.article-body hr{border:0;height:1px;background:var(--c-divider);margin:2em 0;}

.article-empty{
  text-align:center;padding:56px 20px;border:1px dashed var(--c-border);
  border-radius:var(--r-lg);background:var(--c-bg-soft);
}
.article-empty .empty-icon{
  width:48px;height:48px;margin:0 auto 18px;color:var(--c-text-3);
}
.article-empty .empty-title{font-size:20px;font-weight:700;color:var(--c-text);margin-bottom:8px;line-height:1.6;}
.article-empty .empty-desc{font-size:15px;color:var(--c-text-2);margin-bottom:22px;line-height:1.85;}

@media (max-width:1023px){
  .article-card{padding:30px 26px 34px;}
  .article-title{font-size:30px;}
  .article-body h2{font-size:23px;}
}
@media (max-width:639px){
  .article-wrap{padding-top:24px;padding-bottom:56px;}
  .article-card{padding:22px 18px 28px;border-radius:var(--r-md);}
  .article-title{font-size:26px;}
  .article-meta{font-size:13px;gap:8px 14px;}
  .article-body{font-size:16px;line-height:1.9;}
  .article-body h2{font-size:21px;}
  .article-body h3{font-size:18px;}
}

/* ================= 侧栏 ================= */
.article-side{padding-top:0;}
.side-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:24px 24px 20px;
}
.side-title{font-size:17px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-title::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--c-lime);}
.side-links li + li{border-top:1px solid var(--c-divider);}
.side-links a{position:relative;display:block;padding:12px 0 12px 14px;font-size:15px;color:var(--c-text-2);}
.side-links a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--c-lime);transition:height .2s var(--ease);
}
.side-links a:hover{color:var(--c-primary);}
.side-links a:hover::before{height:18px;}
.side-promo{background:var(--c-dark);border-color:var(--c-dark);color:var(--c-dtext);box-shadow:var(--sh-3);}
.side-promo .side-title{color:var(--c-dtext);}
.side-promo p{font-size:14px;color:var(--c-dtext-2);line-height:1.8;margin-bottom:16px;}
.side-promo .btn-primary{background:var(--c-lime);color:var(--c-dark);}
.side-promo .btn-primary:hover{background:#B8E429;color:var(--c-dark);}

@media (max-width:1023px){
  .article-side{margin-top:26px;}
  .side-sticky{position:static;}
}

/* ================= 相关推荐 ================= */
.related-block{
  margin-top:28px;background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:28px 32px 20px;
}
.related-block h2{font-size:21px;margin-bottom:12px;}
.related-list li + li{border-top:1px solid var(--c-divider);}
.related-list a{display:flex;align-items:flex-start;gap:14px;padding:15px 0;color:var(--c-text);}
.related-list .rel-index{
  flex:0 0 auto;width:28px;height:28px;border-radius:8px;background:var(--c-primary-light);
  color:var(--c-primary-dark);font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin-top:3px;
}
.related-list .rel-body{min-width:0;}
.related-list .rel-title{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:16px;font-weight:600;line-height:1.6;transition:color .18s var(--ease);
}
.related-list a:hover .rel-title{color:var(--c-primary);}
.related-list .rel-tag{margin-top:6px;font-size:12px;color:var(--c-text-3);}

.back-row{margin-top:24px;display:flex;flex-wrap:wrap;gap:12px;}

@media (max-width:639px){
  .related-block{padding:20px 18px 14px;border-radius:var(--r-md);}
  .related-block h2{font-size:18px;}
}

/* ================= 返回顶部 ================= */
.back-to-top{
  position:fixed;right:24px;bottom:24px;z-index:70;width:44px;height:44px;border-radius:50%;
  background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s var(--ease),background-color .18s var(--ease);
}
.back-to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.back-to-top:hover{background:var(--c-primary-dark);}
@media (max-width:639px){ .back-to-top{right:16px;bottom:16px;} }

/* ================= 页脚 ================= */
.site-footer{background:var(--c-dark);color:var(--c-dtext-2);padding:64px 0 0;margin-top:0;}
.footer-grid{row-gap:34px;}
.footer-col{min-width:0;}
.footer-logo{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;color:var(--c-dtext);font-weight:800;font-size:16px;letter-spacing:.02em;}
.footer-logo .brand-mark{background:linear-gradient(140deg,var(--c-primary),var(--c-primary-dark));}
.footer-desc{font-size:14px;line-height:1.85;color:var(--c-dtext-2);margin-bottom:18px;max-width:300px;}
.footer-socials{display:flex;flex-wrap:wrap;gap:10px;}
.footer-socials a{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:64px;height:34px;padding:0 14px;border-radius:var(--r-pill);
  font-size:13px;color:var(--c-dtext-2);background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.1);
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.footer-socials a:hover{color:var(--c-dark);background:var(--c-lime);border-color:var(--c-lime);}
.footer-col h4{font-size:14px;font-weight:700;color:#FFFFFF;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{
  position:relative;display:inline-block;padding-left:0;
  font-size:14px;color:var(--c-dtext-2);
  transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.footer-col ul a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--c-lime);transition:height .18s var(--ease);
}
.footer-col ul a:hover{color:#FFFFFF;padding-left:10px;}
.footer-col ul a:hover::before{height:14px;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0 28px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;
  font-size:12px;color:var(--c-dtext-2);line-height:1.8;
}
@media (max-width:1023px){
  .site-footer{padding-top:52px;}
  .footer-desc{max-width:none;}
}
@media (max-width:639px){
  .site-footer{padding-top:44px;}
  .footer-bottom{margin-top:34px;flex-direction:column;}
}

/* ================= 入场动效 ================= */
.fade-up{opacity:0;transform:translateY(16px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.fade-up.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .fade-up{opacity:1;transform:none;transition:none;}
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;}
  html{scroll-behavior:auto;}
}

.fade-up{opacity:1;transform:none;}

/* roulang page: category2 */
:root{
  --brand:#5B3FE8;
  --brand-dark:#3F27C4;
  --brand-light:#EDE9FF;
  --lime:#C6F135;
  --orange:#FF6B2C;
  --bg:#F6F4F1;
  --bg-soft:#FBFAF8;
  --card:#FFFFFF;
  --dark:#14121F;
  --ink:#1B1A24;
  --ink-2:#5C5A6B;
  --ink-3:#8B8898;
  --dark-text:#F2F1F7;
  --dark-text-2:#A9A6BF;
  --line:#E8E4DE;
  --line-2:#EFEBE6;
  --ok:#12A66A;
  --warn:#E0A008;
  --err:#D93A3A;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --sh-1:0 6px 18px rgba(20,18,31,.06);
  --sh-2:0 14px 34px rgba(20,18,31,.12);
  --sh-3:0 18px 44px rgba(20,18,31,.35);
}

/* ---------- reset / base ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
  text-align:left;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-dark);}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

h1{font-size:40px;line-height:1.25;font-weight:800;letter-spacing:.01em;}
h2{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:.01em;}
h3{font-size:21px;line-height:1.5;font-weight:700;letter-spacing:.01em;}
h4{font-size:18px;line-height:1.6;font-weight:700;}

.container-pad{padding-left:24px;padding-right:24px;}

/* Foundation 覆盖 */
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto;}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px;}
.grid-margin-y{margin-top:-12px;margin-bottom:-12px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:16px;font-weight:600;letter-spacing:.01em;
  border:1.5px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-lg{min-height:52px;padding:0 28px;font-size:17px;}
.btn-sm{min-height:36px;padding:0 16px;font-size:14px;border-radius:9px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-lime{background:var(--lime);color:#241E3C;border-color:rgba(20,18,31,.12);box-shadow:var(--sh-1);}
.btn-lime:hover{background:#D4F85A;color:#241E3C;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-lime:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--dark-text);border-color:rgba(255,255,255,.35);}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.6);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-outline:hover{background:var(--brand-light);color:var(--brand-dark);border-color:var(--brand-dark);transform:translateY(-2px);}
.btn-orange{background:var(--orange);color:#fff;border-color:#E8541A;box-shadow:var(--sh-1);}
.btn-orange:hover{background:#F05A1B;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.link-more{font-weight:600;color:var(--brand);border-bottom:2px solid transparent;}
.link-more:hover{border-bottom-color:var(--brand);}

/* ---------- 标签 / 徽章 ---------- */
.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.5;}
.tag-brand{background:var(--brand-light);color:var(--brand-dark);}
.tag-lime{background:var(--lime);color:#241E3C;}
.tag-soft{background:#F1EFEA;color:var(--ink-2);}
.tag-dark{background:rgba(255,255,255,.1);color:var(--dark-text);border:1px solid rgba(255,255,255,.16);}

/* ---------- header / nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:transparent;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:var(--sh-1);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px;}
.nav-side{display:flex;align-items:center;gap:6px;flex:1 1 0;}
.nav-left{justify-content:flex-start;order:1;}
.nav-right{justify-content:flex-end;order:3;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 12px;font-size:15px;font-weight:500;
  color:var(--dark-text);border-radius:8px;
  transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--lime);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:#C9BCFF;font-weight:700;}
.nav-link.is-active::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);margin-right:7px;
}
.site-header.is-scrolled .nav-link{color:var(--ink-2);}
.site-header.is-scrolled .nav-link:hover{color:var(--brand);}
.site-header.is-scrolled .nav-link.is-active{color:var(--brand);}

.brand{order:2;display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:30px;height:30px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand) 0%,#7A63F2 55%,var(--lime) 100%);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:9px;border-radius:4px;background:rgba(255,255,255,.9);
}
.brand-text{
  font-size:18px;font-weight:800;letter-spacing:.02em;color:var(--dark-text);
  white-space:nowrap;transition:color .25s ease;
}
.site-header.is-scrolled .brand-text{color:var(--ink);}
.nav-cta{margin-left:10px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border:1px solid rgba(255,255,255,.28);order:1;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--dark-text);border-radius:2px;transition:transform .22s ease,opacity .22s ease;}
.site-header.is-scrolled .nav-toggle{border-color:var(--line);}
.site-header.is-scrolled .nav-toggle span{background:var(--ink);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-cta{display:none;order:3;min-height:38px;padding:0 14px;font-size:14px;}

.mobile-drawer{
  display:none;background:#fff;border-top:1px solid var(--line);
  box-shadow:var(--sh-2);
  max-height:0;overflow:hidden;transition:max-height .3s ease;
}
.mobile-drawer.is-open{max-height:70vh;overflow:auto;}
.mobile-drawer ul{padding:8px 0;}
.mobile-drawer li{border-bottom:1px solid var(--line-2);}
.mobile-drawer li:last-child{border-bottom:0;}
.mobile-drawer a.m-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 24px;font-size:18px;font-weight:500;color:var(--ink);
}
.mobile-drawer a.m-link:hover{background:var(--bg-soft);color:var(--brand);}
.mobile-drawer a.m-link.is-active{color:var(--brand);font-weight:700;}
.mobile-drawer a.m-link.is-active::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);margin-right:10px;
}
.drawer-cta{margin:16px 24px 22px;}
.drawer-cta .btn{width:100%;}

/* ---------- 页头 hero（深色） ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--dark);color:var(--dark-text);
  padding:140px 0 76px;
}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  opacity:.20;
}
.page-hero-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:48px 48px;
  opacity:.55;
}
.page-hero>.grid-container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--dark-text-2);margin-bottom:22px;}
.breadcrumb a{color:var(--dark-text-2);}
.breadcrumb a:hover{color:var(--lime);}
.breadcrumb span[aria-current]{color:var(--dark-text);}
.page-hero h1{margin:16px 0 14px;max-width:15em;color:#fff;}
.page-hero-lead{font-size:17px;color:var(--dark-text-2);max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.hero-facts li{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);color:var(--dark-text);
}
.hero-facts i{color:var(--lime);font-size:12px;}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0;}
.section-soft{background:var(--bg-soft);}
.section-white{background:#fff;}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--brand);
  text-transform:none;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--lime);}
.section-head h2{margin-bottom:12px;}
.section-head p{color:var(--ink-2);font-size:16px;line-height:1.85;}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:44px;}

/* 进度指示 */
.progress-note{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:30px;}
.progress-track{flex:1 1 240px;height:8px;border-radius:999px;background:#EBE7E1;overflow:hidden;min-width:160px;}
.progress-fill{height:100%;width:62%;border-radius:999px;background:linear-gradient(90deg,var(--brand),#8A74F5);}
.progress-note span{font-size:13px;color:var(--ink-3);}

/* ---------- 步骤流 ---------- */
.step-flow{position:relative;padding-left:0;}
.step-item{
  position:relative;display:flex;gap:20px;
  padding:22px 24px;margin-bottom:14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.step-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(91,63,232,.32);}
.step-item::before{
  content:"";position:absolute;left:44px;top:-14px;width:2px;height:14px;background:var(--line);
}
.step-item:first-child::before{display:none;}
.step-no{
  flex:0 0 auto;width:48px;height:48px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--lime);color:#241E3C;font-weight:800;font-size:18px;
  font-variant-numeric:tabular-nums;
}
.step-body h3{margin-bottom:8px;}
.step-body p{color:var(--ink-2);font-size:16px;line-height:1.85;}
.step-body .tag{margin-top:12px;}

/* 侧栏提示卡 */
.tip-stack{display:flex;flex-direction:column;gap:14px;position:sticky;top:96px;}
.tip-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px;box-shadow:var(--sh-1);
  transition:transform .28s ease,box-shadow .28s ease;
}
.tip-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.tip-card i{color:var(--brand);font-size:18px;display:block;margin-bottom:10px;}
.tip-card h4{font-size:17px;margin-bottom:6px;}
.tip-card p{font-size:14px;color:var(--ink-2);line-height:1.8;}

/* ---------- 风险自查榜 ---------- */
.rank-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;}
.rank-item{
  display:flex;align-items:center;gap:18px;
  padding:20px 24px;border-bottom:1px solid var(--line-2);
  transition:background .2s ease;
}
.rank-item:last-child{border-bottom:0;}
.rank-item:hover{background:var(--bg-soft);}
.rank-no{
  flex:0 0 auto;width:34px;height:34px;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand-dark);font-weight:800;font-size:15px;
  font-variant-numeric:tabular-nums;
}
.rank-item:first-child .rank-no{background:var(--lime);color:#241E3C;}
.rank-main{flex:1 1 auto;min-width:0;}
.rank-main h3{font-size:17px;margin-bottom:8px;font-weight:700;}
.rank-bar{height:7px;border-radius:999px;background:#EEEBE6;overflow:hidden;}
.rank-bar span{display:block;height:100%;border-radius:999px;background:var(--brand);}
.rank-item.is-high .rank-bar span{background:var(--orange);}
.rank-item.is-mid .rank-bar span{background:#8A74F5;}
.rank-val{flex:0 0 auto;font-size:14px;color:var(--ink-3);font-variant-numeric:tabular-nums;font-weight:600;}
.rank-note{margin-top:16px;font-size:13px;color:var(--ink-3);}

/* ---------- 图文交错 ---------- */
.split{display:flex;align-items:center;gap:48px;}
.split-media{flex:1 1 46%;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1);}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s ease;}
.split-media:hover img{transform:scale(1.03);}
.split-body{flex:1 1 54%;}
.split-body h2{margin-bottom:14px;}
.split-body>p{color:var(--ink-2);}
.check-list{margin:22px 0 26px;display:flex;flex-direction:column;gap:14px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:16px;line-height:1.75;color:var(--ink);}
.check-list i{color:var(--ok);margin-top:6px;font-size:14px;}
.split.reverse{flex-direction:row-reverse;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(91,63,232,.32);box-shadow:var(--sh-1);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:14px 22px;
  font-size:17px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .faq-ico{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand-dark);font-size:13px;
  transition:transform .24s ease,background .24s ease;
}
.faq-item[open] summary .faq-ico{transform:rotate(180deg);background:var(--lime);color:#241E3C;}
.faq-answer{padding:0 22px 20px;color:var(--ink-2);font-size:15.5px;line-height:1.85;}
.faq-item summary:hover{color:var(--brand);}

/* ---------- 相关分类 ---------- */
.rel-grid g{display:block;}
.rel-card{
  display:block;height:100%;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-1);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(91,63,232,.32);}
.rel-card .tag{margin-bottom:14px;}
.rel-card h3{font-size:19px;margin-bottom:8px;}
.rel-card p{font-size:14px;color:var(--ink-2);line-height:1.8;margin-bottom:14px;}
.rel-card .rel-link{font-size:14px;font-weight:600;color:var(--brand);}
.rel-card:hover .rel-link{color:var(--brand-dark);}

/* ---------- 深色 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--dark);color:var(--dark-text);
  padding:76px 0;
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;
  border-radius:50%;background:radial-gradient(circle,rgba(91,63,232,.45),transparent 65%);
}
.cta-band>.grid-container{position:relative;z-index:2;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;margin-bottom:10px;}
.cta-inner p{color:var(--dark-text-2);font-size:16px;max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--dark-text-2);padding:72px 0 0;}
.footer-grid{margin-bottom:8px;}
.footer-col{margin-bottom:36px;}
.footer-logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800;letter-spacing:.02em;margin-bottom:16px;}
.footer-logo .brand-mark{width:28px;height:28px;border-radius:8px;}
.footer-desc{font-size:14px;line-height:1.85;color:var(--dark-text-2);max-width:300px;}
.footer-socials{display:flex;gap:14px;margin-top:18px;}
.footer-socials a{font-size:13px;color:var(--dark-text-2);border-bottom:2px solid transparent;padding-bottom:2px;}
.footer-socials a:hover{color:#fff;border-bottom-color:var(--lime);}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{
  display:inline-block;font-size:14px;color:var(--dark-text-2);
  border-left:2px solid transparent;padding-left:0;
  transition:color .18s ease,padding-left .18s ease,border-color .18s ease;
}
.footer-col ul a:hover{color:#fff;border-left-color:var(--lime);padding-left:8px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0 26px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12px;color:var(--dark-text-2);
}

/* ---------- 回顶 ---------- */
.to-top{
  position:fixed;right:22px;bottom:24px;z-index:90;
  width:44px;height:44px;border-radius:50%;
  background:var(--brand);color:#fff;display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s ease,transform .24s ease,visibility .24s ease,background .18s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-dark);color:#fff;}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .42s ease,transform .42s ease;}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  h1{font-size:30px;}
  h2{font-size:25px;}
  h3{font-size:19px;}
  .nav-left,.nav-right{display:none;}
  .nav-toggle{display:inline-flex;}
  .mobile-cta{display:inline-flex;}
  .mobile-drawer{display:block;}
  .brand{flex:1 1 auto;justify-content:center;}
  .brand-text{font-size:16px;}
  .section{padding:76px 0;}
  .page-hero{padding:120px 0 60px;}
  .split{flex-direction:column;gap:28px;}
  .split.reverse{flex-direction:column;}
  .split-media,.split-body{flex:1 1 auto;width:100%;}
  .tip-stack{position:static;margin-top:26px;}
  .section-head-row{flex-direction:column;align-items:flex-start;gap:12px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:639px){
  body{font-size:16px;line-height:1.9;}
  h1{font-size:27px;}
  h2{font-size:23px;}
  .grid-container{padding-left:16px;padding-right:16px;}
  .grid-margin-x{margin-left:-8px;margin-right:-8px;}
  .grid-margin-x>.cell{padding-left:8px;padding-right:8px;}
  .section{padding:58px 0;}
  .page-hero{padding:104px 0 52px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .step-item{flex-direction:column;gap:14px;padding:20px;}
  .step-item::before{left:34px;height:10px;top:-10px;}
  .rank-item{padding:16px;gap:12px;}
  .rank-item .tag{display:none;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .brand-text{font-size:14px;letter-spacing:0;}
  .to-top{right:14px;bottom:16px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --brand:#5B3FE8;
  --brand-deep:#3F27C4;
  --brand-soft:#EDE9FF;
  --lime:#C6F135;
  --orange:#FF6B2C;
  --bg:#F6F4F1;
  --dark:#14121F;
  --card:#FFFFFF;
  --border:#E8E4DE;
  --divider:#EFEBE6;
  --text:#1B1A24;
  --text-2:#5C5A6B;
  --text-3:#8B8898;
  --dark-text:#F2F1F7;
  --dark-text-2:#A9A6BF;
  --ok:#12A66A;
  --warn:#E0A008;
  --err:#D93A3A;
  --r-lg:16px;
  --r-md:12px;
  --r-btn:10px;
  --sh-1:0 6px 18px rgba(20,18,31,.06);
  --sh-2:0 14px 34px rgba(20,18,31,.12);
  --sh-3:0 18px 44px rgba(20,18,31,.35);
  --sec-desktop:104px;
  --sec-tablet:80px;
  --sec-mobile:60px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-md)}
h1,h2,h3,h4{margin:0;letter-spacing:.015em;color:var(--text)}
h1{font-size:40px;line-height:1.25;font-weight:800}
h2{font-size:30px;line-height:1.35;font-weight:700}
h3{font-size:21px;line-height:1.5;font-weight:700}
h4{font-size:18px;line-height:1.5;font-weight:700}
p{margin:0 0 1.2em;text-align:left}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--brand-deep)}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

/* ---------- Foundation 覆盖 ---------- */
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto}
.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px}
.button,.button.primary,.button.secondary{background:none;color:inherit;font-family:inherit;margin:0}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.btn:active{transform:translateY(0)}
.btn-lg{min-height:52px;padding:0 28px;font-size:17px}
.btn-sm{min-height:36px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-lime{background:var(--lime);color:var(--dark);box-shadow:var(--sh-1)}
.btn-lime:hover{background:#b6e323;color:var(--dark);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-orange{background:var(--orange);color:#fff;border-color:#e2571c;box-shadow:var(--sh-1)}
.btn-orange:hover{background:#ea5a1c;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-ghost{background:#fff;color:var(--brand);border:1.5px solid var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-2px)}
.btn-quiet{background:#fff;color:var(--text);border:1px solid var(--border)}
.btn-quiet:hover{border-color:rgba(91,63,232,.3);color:var(--brand);transform:translateY(-2px)}
.btn-text{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.btn-text:hover{color:var(--brand-deep);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px}

.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.01em}
.badge-lime{background:var(--lime);color:#232a05}
.badge-brand{background:var(--brand-soft);color:var(--brand-deep)}
.badge-orange{background:#FFEDE4;color:#B8460F}
.badge-plain{background:var(--divider);color:var(--text-2)}

.section{padding-top:var(--sec-desktop);padding-bottom:var(--sec-desktop)}
.section-tight{padding-top:76px;padding-bottom:76px}
.section-gray{background:#FBFAF8}
.section-white{background:#fff}
.section-head{max-width:720px;margin-bottom:44px}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.04em;margin-bottom:12px}
.section-head .eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px}
.section-head p{margin:14px 0 0;color:var(--text-2);font-size:16px;line-height:1.85}
.section-head-center{max-width:720px;margin-left:auto;margin-right:auto;text-align:center}

.reveal{opacity:0;transform:translateY(16px);transition:opacity .42s ease-out,transform .42s ease-out}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .25s ease-out,border-color .25s ease-out,box-shadow .25s ease-out;
}
.site-header.is-scrolled{background:#fff;border-bottom:1px solid var(--border);box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px}
.nav-side{display:flex;align-items:center;gap:26px}
.nav-left{flex:1 1 0;justify-content:flex-start}
.nav-right{flex:1 1 0;justify-content:flex-end}
.nav-link{
  position:relative;font-size:15.5px;font-weight:500;color:var(--dark-text);
  padding:6px 2px;white-space:nowrap;
}
.site-header.is-scrolled .nav-link{color:var(--text-2)}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);
  transition:width .22s ease-out;border-radius:2px;
}
.nav-link:hover{color:#fff}
.site-header.is-scrolled .nav-link:hover{color:var(--brand)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--lime)}
.site-header.is-scrolled .nav-link.is-active{color:var(--brand)}
.nav-link.is-active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--lime);
}
.site-header.is-scrolled .nav-link.is-active::before{background:var(--brand)}
.nav-link.is-active::after{width:100%}
.nav-cta{margin-left:6px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand) 0%,#7a63f0 100%);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:11px;height:11px;border-radius:4px;background:var(--lime);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-line{font-size:16px;font-weight:800;letter-spacing:.02em;color:#fff;white-space:nowrap}
.site-header.is-scrolled .brand-line{color:var(--text)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.06);border-radius:10px;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.site-header.is-scrolled .nav-toggle{border-color:var(--border);background:#fff}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform .22s ease-out,opacity .22s ease-out,background-color .22s ease-out}
.site-header.is-scrolled .nav-toggle span{background:var(--text)}
.site-header.is-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.site-header.is-open .nav-toggle span:nth-child(2){opacity:0}
.site-header.is-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.header-cta-mobile{display:none}
.mobile-drawer{
  display:none;background:#fff;border-top:1px solid var(--border);box-shadow:var(--sh-2);
  max-height:70vh;overflow-y:auto;
}
.site-header.is-open .mobile-drawer{display:block}
.mobile-drawer ul{padding:8px 0}
.mobile-drawer li{border-bottom:1px solid var(--divider)}
.mobile-drawer li:last-child{border-bottom:0}
.mobile-drawer a{
  display:flex;align-items:center;height:52px;padding:0 24px;
  font-size:18px;font-weight:600;color:var(--text);
}
.mobile-drawer a.is-active{color:var(--brand)}
.mobile-drawer a.is-active::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);margin-right:10px;
}
.mobile-drawer .drawer-cta{padding:16px 24px 22px}
.mobile-drawer .drawer-cta .btn{width:100%}

/* ---------- 页头 ---------- */
.page-hero{
  background-color:var(--dark);
  background-image:linear-gradient(115deg,rgba(20,18,31,.94) 0%,rgba(20,18,31,.86) 45%,rgba(20,18,31,.72) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  color:var(--dark-text);
  padding:32px 0 76px;
  margin-top:-72px;
  position:relative;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:44px 44px;
}
.page-hero .grid-container{position:relative;z-index:2;padding-top:96px}
.page-hero h1{color:#fff;max-width:860px}
.page-hero .lead{color:var(--dark-text-2);font-size:17px;margin:18px 0 0;max-width:640px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--dark-text-2);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a{color:var(--dark-text-2)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .current{color:#fff}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats li{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-md);padding:14px 20px;min-width:132px;
}
.hero-stats strong{display:block;font-size:24px;font-weight:800;color:var(--lime);line-height:1.3}
.hero-stats span{font-size:13px;color:var(--dark-text-2)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}

/* ---------- 核对要点（非对称图文） ---------- */
.check-grid{align-items:center}
.check-copy p{color:var(--text-2);font-size:16.5px}
.check-list{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:10px;box-shadow:var(--sh-1)}
.check-item{display:flex;gap:16px;padding:18px;border-radius:var(--r-md);transition:background-color .2s ease-out}
.check-item+.check-item{border-top:1px solid var(--divider)}
.check-item:hover{background:var(--bg)}
.check-num{
  flex:0 0 auto;width:36px;height:36px;border-radius:9px;background:var(--lime);color:#232a05;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;
}
.check-item h4{margin-bottom:4px}
.check-item p{margin:0;font-size:15px;color:var(--text-2);line-height:1.8}
.check-figure{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--border);box-shadow:var(--sh-1)}
.check-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0}
.check-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:16px 18px;
  background:linear-gradient(180deg,rgba(20,18,31,0),rgba(20,18,31,.82));
  color:#fff;font-size:13.5px;
}

/* ---------- 对照表 ---------- */
.table-note{font-size:13px;color:var(--text-3);margin:14px 2px 0}
.benefit-table-wrap{
  overflow-x:auto;background:#fff;border:1px solid var(--border);
  border-radius:14px;box-shadow:var(--sh-1);
}
table.benefit-table{width:100%;min-width:820px;border-collapse:collapse;font-size:15px;line-height:1.6}
.benefit-table thead th{
  background:var(--brand-soft);color:var(--brand-deep);font-weight:700;
  padding:16px 18px;text-align:left;border-bottom:1px solid var(--border);white-space:nowrap;
}
.benefit-table thead th.col-recommend{background:#E4DEFB;position:relative}
.benefit-table thead th .th-tag{margin-left:8px;vertical-align:middle}
.benefit-table tbody th{
  font-weight:600;color:var(--text);text-align:left;padding:0 18px;height:56px;
  border-bottom:1px solid var(--divider);background:#fff;position:sticky;left:0;z-index:2;
  box-shadow:1px 0 0 var(--divider);
}
.benefit-table tbody td{
  padding:0 18px;height:56px;border-bottom:1px solid var(--divider);color:var(--text-2);white-space:nowrap;
}
.benefit-table tbody tr:nth-child(even) td{background:#FBFAF8}
.benefit-table tbody tr:nth-child(even) th{background:#FBFAF8}
.benefit-table tbody td.col-recommend{background:rgba(237,233,255,.45)}
.benefit-table tbody tr:hover td,.benefit-table tbody tr:hover th{background:var(--bg)}
.benefit-table tbody tr:last-child td,.benefit-table tbody tr:last-child th{border-bottom:0}
.mark{display:inline-flex;align-items:center;gap:6px;font-weight:600}
.mark-yes{color:var(--ok)}
.mark-no{color:var(--text-3)}
.mark i{font-size:12px}

/* ---------- 等级价格卡 ---------- */
.plan-grid .cell{margin-bottom:24px}
.plan-card{
  height:100%;background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .25s ease-out,box-shadow .25s ease-out,border-color .25s ease-out;
}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(91,63,232,.3)}
.plan-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.plan-card h3{font-size:20px}
.plan-meta{font-size:14px;color:var(--text-3);margin:0 0 18px}
.plan-list{border-top:1px solid var(--divider);padding-top:18px;margin-bottom:22px;flex:1 1 auto}
.plan-list li{position:relative;padding-left:24px;font-size:15px;color:var(--text-2);line-height:1.8;margin-bottom:10px}
.plan-list li:last-child{margin-bottom:0}
.plan-list li::before{
  content:"";position:absolute;left:4px;top:12px;width:8px;height:8px;border-radius:3px;
  background:var(--brand-soft);border:1px solid rgba(91,63,232,.45);
}
.plan-list li.is-off{color:var(--text-3)}
.plan-list li.is-off::before{background:var(--divider);border-color:var(--border)}
.plan-card .btn{width:100%}
.plan-card.is-featured{border-color:rgba(91,63,232,.45);box-shadow:var(--sh-2)}

/* ---------- 场景图文 ---------- */
.scene-row{align-items:center;margin-bottom:56px}
.scene-row:last-child{margin-bottom:0}
.scene-figure{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--border);box-shadow:var(--sh-1)}
.scene-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .4s ease-out}
.scene-figure:hover img{transform:scale(1.03)}
.scene-copy h3{margin-bottom:12px}
.scene-copy p{color:var(--text-2);font-size:16px}
.scene-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

/* ---------- 开通流程 ---------- */
.flow-grid .cell{margin-bottom:24px}
.flow-card{
  height:100%;background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--sh-1);position:relative;
  transition:transform .25s ease-out,box-shadow .25s ease-out,border-color .25s ease-out;
}
.flow-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(91,63,232,.3)}
.flow-step{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;background:var(--lime);color:#232a05;
  font-weight:800;font-size:16px;margin-bottom:16px;
}
.flow-card h3{font-size:19px;margin-bottom:8px}
.flow-card p{margin:0;color:var(--text-2);font-size:15px;line-height:1.8}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.faq-item[open]{border-color:rgba(91,63,232,.32);box-shadow:var(--sh-1)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:14px 22px;font-size:17px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:22px;font-weight:600;color:var(--brand);line-height:1;
  transition:transform .24s ease-out;flex:0 0 auto;
}
.faq-item[open] summary::after{content:"+";transform:rotate(135deg)}
.faq-item summary:hover{color:var(--brand)}
.faq-answer{padding:0 22px 20px;font-size:15.5px;line-height:1.85;color:var(--text-2)}
.faq-answer p{margin:0}
.faq-answer a{font-weight:600}

/* ---------- 相关分类 ---------- */
.related-grid .cell{margin-bottom:20px}
.related-card{
  display:flex;flex-direction:column;justify-content:space-between;height:100%;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--sh-1);
  transition:transform .25s ease-out,box-shadow .25s ease-out,border-color .25s ease-out;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(91,63,232,.3)}
.related-card h3{font-size:18px;margin-bottom:8px}
.related-card p{margin:0 0 16px;font-size:14.5px;color:var(--text-2);line-height:1.75}
.related-card .more{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px}

/* ---------- 深色 CTA ---------- */
.cta-band{
  background-color:var(--dark);
  background-image:linear-gradient(105deg,rgba(20,18,31,.95) 0%,rgba(20,18,31,.82) 60%,rgba(20,18,31,.7) 100%),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  color:var(--dark-text);
}
.cta-band .cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  padding-top:64px;padding-bottom:64px;
}
.cta-band h2{color:#fff;max-width:620px}
.cta-band p{margin:12px 0 0;color:var(--dark-text-2);font-size:16px;max-width:620px}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--dark-text-2);padding:72px 0 0}
.footer-grid{padding-bottom:44px}
.footer-col{margin-bottom:36px}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-logo span:last-child{font-size:16px;font-weight:800;color:#fff;letter-spacing:.02em}
.footer-desc{font-size:14.5px;line-height:1.85;color:var(--dark-text-2);max-width:300px;margin-bottom:20px}
.footer-socials{display:flex;gap:10px;flex-wrap:wrap}
.footer-socials a{
  display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:999px;
  border:1px solid rgba(255,255,255,.16);color:var(--dark-text-2);font-size:13px;
}
.footer-socials a:hover{color:#fff;border-color:rgba(198,241,53,.6)}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{position:relative;font-size:14.5px;color:var(--dark-text-2);padding-left:0;transition:color .18s ease-out,padding-left .18s ease-out}
.footer-col ul a:hover{color:#fff;padding-left:10px}
.footer-col ul a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--lime);transition:height .18s ease-out;border-radius:2px;
}
.footer-col ul a:hover::before{height:14px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:var(--text-3);
}
.footer-bottom p{margin:0}

/* ---------- 回顶 ---------- */
.to-top{
  position:fixed;right:22px;bottom:22px;width:44px;height:44px;border-radius:50%;
  background:var(--brand);color:#fff;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s ease-out,transform .24s ease-out,visibility .24s ease-out,background-color .18s ease-out;
  z-index:70;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--brand-deep)}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .nav-side{display:none}
  .nav-toggle{display:flex}
  .header-cta-mobile{display:inline-flex}
  .header-inner{min-height:64px}
  .brand-text{flex-direction:row}
  .brand-line{font-size:14px}
  .brand-line+.brand-line{margin-left:2px}
  .brand-mark{width:30px;height:30px;border-radius:9px}
  h1{font-size:28px}
  h2{font-size:23px}
  h3{font-size:18px}
  h4{font-size:16px}
  .section{padding-top:var(--sec-tablet);padding-bottom:var(--sec-tablet)}
  .section-tight{padding-top:64px;padding-bottom:64px}
  .page-hero{padding-bottom:60px}
  .page-hero .grid-container{padding-top:84px}
  .check-figure{margin-top:32px}
  .scene-row{margin-bottom:44px}
}
@media screen and (max-width:639px){
  .grid-container{padding-left:16px;padding-right:16px}
  .grid-margin-x{margin-left:-8px;margin-right:-8px}
  .grid-margin-x>.cell{padding-left:8px;padding-right:8px}
  body{font-size:16px;line-height:1.9}
  .section{padding-top:var(--sec-mobile);padding-bottom:var(--sec-mobile)}
  .section-tight{padding-top:52px;padding-bottom:52px}
  .section-head{margin-bottom:30px}
  .hero-stats{gap:10px;margin-top:26px}
  .hero-stats li{flex:1 1 calc(50% - 10px);min-width:0;padding:12px 14px}
  .hero-stats strong{font-size:20px}
  .hero-actions .btn{width:100%}
  .page-hero .grid-container{padding-top:76px}
  .cta-band .cta-inner{padding-top:52px;padding-bottom:52px}
  .cta-band .cta-actions{width:100%}
  .cta-band .cta-actions .btn{width:100%}
  .footer-bottom{flex-direction:column}
  .to-top{right:16px;bottom:16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --brand:#5B3FE8;
  --brand-dark:#3F27C4;
  --brand-soft:#EDE9FF;
  --lime:#C6F135;
  --orange:#FF6B2C;
  --bg:#F6F4F1;
  --bg-alt:#FBFAF8;
  --dark:#14121F;
  --card:#FFFFFF;
  --line:#E8E4DE;
  --divider:#EFEBE6;
  --text:#1B1A24;
  --text-2:#5C5A6B;
  --text-3:#8B8898;
  --dark-text:#F2F1F7;
  --dark-text-2:#A9A6BF;
  --ok:#12A66A;
  --warn:#E0A008;
  --err:#D93A3A;
  --r-lg:16px;
  --r-md:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 6px 18px rgba(20,18,31,.06);
  --sh-2:0 14px 34px rgba(20,18,31,.12);
  --sh-3:0 18px 44px rgba(20,18,31,.35);
  --sec:96px;
  --sec-md:78px;
  --sec-sm:60px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand);text-decoration:none;}
a:hover{color:var(--brand-dark);}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:.01em;}
h1{font-size:40px;line-height:1.25;font-weight:800;}
h2{font-size:30px;line-height:1.35;font-weight:700;}
h3{font-size:21px;line-height:1.5;font-weight:700;}
h4{font-size:18px;line-height:1.55;font-weight:700;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
.num{font-variant-numeric:tabular-nums;}

/* 容器与栅格微调 */
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto;}
.grid-x{width:100%;}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px;}
@media screen and (max-width:1023px){
  .grid-margin-x{margin-left:-10px;margin-right:-10px;}
  .grid-margin-x>.cell{padding-left:10px;padding-right:10px;}
}
@media screen and (max-width:639px){
  .grid-container{padding-left:16px;padding-right:16px;}
  .grid-margin-x{margin-left:-8px;margin-right:-8px;}
  .grid-margin-x>.cell{padding-left:8px;padding-right:8px;}
  h1{font-size:28px;}
  h2{font-size:23px;}
  h3{font-size:18px;}
  h4{font-size:16px;}
  body{font-size:16px;}
  :root{--sec:60px;--sec-md:60px;--sec-sm:56px;}
}
button{background:none;border:none;cursor:pointer;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

/* 通用按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .18s ease-out,background-color .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{background:var(--orange);color:#fff;border-color:#E2541B;box-shadow:var(--sh-1);}
.btn-accent:hover{background:#F55C1C;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-accent:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-lime{background:var(--lime);color:#1B1A24;font-weight:700;}
.btn-lime:hover{background:#B8E625;color:#1B1A24;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-lime:active{transform:translateY(0);}
.btn-sm{min-height:36px;padding:0 16px;font-size:14px;}
.btn-lg{min-height:52px;padding:0 28px;font-size:17px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{background:#E8E4DE;color:#8B8898;border-color:#E8E4DE;cursor:not-allowed;transform:none;box-shadow:none;}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;border-radius:var(--r-pill);font-size:12px;font-weight:600;line-height:1.5;}
.badge-lime{background:var(--lime);color:#241C05;}
.badge-purple{background:var(--brand-soft);color:var(--brand-dark);}
.badge-outline{background:transparent;color:var(--text-2);border:1px solid var(--line);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--divider);box-shadow:var(--sh-1);}
.nav-inner{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:72px;gap:16px;}
.nav-side{display:flex;align-items:center;gap:6px;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 12px;
  font-size:15px;font-weight:500;color:var(--text-2);border-radius:8px;
  transition:color .18s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s ease-out;
  border-radius:2px;
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:700;}
.nav-link.is-active::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);
  margin-right:8px;flex:0 0 auto;
}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 18px;margin-left:10px;
  background:var(--brand);color:#fff;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  transition:background-color .18s ease,transform .18s ease,box-shadow .18s ease;white-space:nowrap;
}
.nav-cta:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-1);}
.nav-cta:active{transform:translateY(0);}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;}
.brand-text{font-size:17px;font-weight:800;color:var(--text);letter-spacing:.01em;white-space:nowrap;}
.brand-mark{
  width:24px;height:24px;border-radius:8px;background:var(--brand);position:relative;flex:0 0 auto;
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.18);
}
.brand-mark::after{
  content:"";position:absolute;left:8px;top:8px;width:8px;height:8px;border-radius:2px;background:var(--lime);
}
.nav-toggle{
  display:none;grid-column:1;grid-row:1;justify-self:start;
  width:44px;height:44px;border-radius:10px;position:relative;
}
.nav-toggle span{
  display:block;position:absolute;left:11px;width:22px;height:2px;background:var(--text);border-radius:2px;
  transition:transform .22s ease,opacity .18s ease,top .22s ease;
}
.nav-toggle span:nth-child(1){top:15px;}
.nav-toggle span:nth-child(2){top:21px;}
.nav-toggle span:nth-child(3){top:27px;}
.nav-toggle.is-open span:nth-child(1){top:21px;transform:rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){top:21px;transform:rotate(-45deg);}
.nav-cta-mobile{display:none;grid-column:3;grid-row:1;justify-self:end;}
.mobile-drawer{
  display:none;position:absolute;left:0;right:0;top:100%;
  background:#fff;border-top:1px solid var(--divider);box-shadow:var(--sh-2);
  max-height:70vh;overflow-y:auto;padding:8px 0 20px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
  display:flex;align-items:center;height:52px;padding:0 24px;font-size:18px;font-weight:600;color:var(--text);
  border-bottom:1px solid var(--divider);
}
.mobile-drawer a:hover,.mobile-drawer a.is-active{color:var(--brand);background:var(--brand-soft);}
.mobile-drawer .drawer-cta{
  margin:20px 24px 0;height:52px;background:var(--brand);color:#fff;border-radius:var(--r-btn);
  justify-content:center;font-size:17px;border-bottom:none;
}
.mobile-drawer .drawer-cta:hover{background:var(--brand-dark);color:#fff;}
@media screen and (max-width:1023px){
  .nav-inner{grid-template-columns:44px 1fr 44px;height:60px;gap:8px;}
  .nav-left,.nav-right{display:none;}
  .nav-toggle{display:block;}
  .brand-text{font-size:14px;}
  .brand-mark{width:20px;height:20px;border-radius:6px;}
  .brand-mark::after{left:7px;top:7px;width:6px;height:6px;}
  .nav-cta-mobile{
    display:inline-flex;align-items:center;justify-content:center;
    height:36px;padding:0 12px;background:var(--brand);color:#fff;border-radius:8px;font-size:13px;font-weight:600;
  }
  .nav-cta-mobile:hover{background:var(--brand-dark);color:#fff;}
}

/* ============ 面包屑 ============ */
.crumb-bar{padding:20px 0 0;}
.breadcrumb{font-size:13px;color:var(--text-3);line-height:1.7;}
.breadcrumb span.sep{margin:0 8px;color:#C9C5CC;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .current{color:var(--text);font-weight:600;}

/* ============ 页头 ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:44px 0 56px;
  background:
    linear-gradient(180deg,rgba(246,244,241,.92) 0%,rgba(246,244,241,.98) 62%,var(--bg) 100%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
}
.page-hero .hero-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:44px;align-items:end;}
.page-hero h1{font-size:38px;line-height:1.25;font-weight:800;}
.page-hero h1 em{font-style:normal;color:var(--brand);}
.hero-lead{margin-top:14px;font-size:17px;line-height:1.85;color:var(--text-2);max-width:560px;}
.hero-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.hero-figs{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.fig-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:18px 16px;box-shadow:var(--sh-1);
}
.fig-card .fig-num{font-size:26px;font-weight:800;color:var(--brand);line-height:1.2;font-variant-numeric:tabular-nums;}
.fig-card .fig-label{margin-top:4px;font-size:13px;color:var(--text-2);line-height:1.6;}
@media screen and (max-width:1023px){
  .page-hero .hero-grid{grid-template-columns:1fr;gap:28px;align-items:start;}
  .page-hero h1{font-size:30px;}
  .hero-figs{grid-template-columns:repeat(3,1fr);}
}
@media screen and (max-width:639px){
  .page-hero{padding:32px 0 44px;}
  .page-hero h1{font-size:26px;}
  .hero-figs{grid-template-columns:1fr;gap:10px;}
  .fig-card{display:flex;align-items:center;gap:12px;padding:14px 16px;}
  .fig-card .fig-num{font-size:22px;}
  .fig-card .fig-label{margin-top:0;}
}

/* ============ 板块 ============ */
.section{padding:var(--sec) 0;}
.section-tight{padding:var(--sec-md) 0;}
.section-alt{background:var(--bg-alt);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;}
.section-head .sh-sub{margin-top:8px;font-size:15px;color:var(--text-2);line-height:1.8;max-width:640px;}
.section-head .sh-more{font-size:15px;font-weight:600;color:var(--brand);white-space:nowrap;}
.section-head .sh-more:hover{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px;}

/* ============ 头条大卡 ============ */
.headline-card{
  display:grid;grid-template-columns:1.15fr 1fr;gap:0;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);
  transition:transform .35s ease,box-shadow .35s ease,border-color .35s ease;
}
.headline-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(91,63,232,.3);}
.headline-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--brand-soft);}
.headline-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.headline-card:hover .headline-media img{transform:scale(1.03);}
.headline-media .media-tag{position:absolute;left:16px;top:16px;}
.headline-body{padding:34px 34px 30px;display:flex;flex-direction:column;justify-content:center;}
.headline-body h3{font-size:26px;line-height:1.4;margin-bottom:14px;}
.headline-body p{font-size:16px;line-height:1.85;color:var(--text-2);}
.headline-meta{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:20px;font-size:14px;color:var(--text-3);}
.headline-actions{margin-top:26px;display:flex;gap:12px;flex-wrap:wrap;}
@media screen and (max-width:1023px){
  .headline-card{grid-template-columns:1fr;}
  .headline-body{padding:24px 22px 26px;}
  .headline-body h3{font-size:21px;}
}

/* ============ 筛选条 ============ */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;
  padding:14px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);
}
.filter-chip{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;color:var(--text-2);background:#F6F4F1;border:1px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.filter-chip:hover{background:var(--brand-soft);color:var(--brand-dark);}
.filter-chip.is-current{background:var(--brand);color:#fff;border-color:var(--brand);}
.filter-chip.is-current:hover{background:var(--brand-dark);color:#fff;}
@media screen and (max-width:639px){
  .filter-bar{flex-wrap:nowrap;overflow-x:auto;padding:12px;-webkit-overflow-scrolling:touch;}
  .filter-chip{white-space:nowrap;flex:0 0 auto;}
}

/* ============ 图库卡 ============ */
.lib-card{
  display:flex;flex-direction:column;height:100%;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .35s ease,box-shadow .35s ease,border-color .35s ease;
}
.lib-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(91,63,232,.3);}
.lib-media{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--brand-soft);}
.lib-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.lib-card:hover .lib-media img{transform:scale(1.04);}
.lib-media .lib-badge{position:absolute;left:12px;top:12px;}
.lib-media .lib-heat{
  position:absolute;right:12px;bottom:12px;display:inline-flex;align-items:center;gap:4px;
  padding:3px 10px;border-radius:var(--r-pill);background:rgba(20,18,31,.78);color:#fff;font-size:12px;font-weight:600;
}
.lib-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1;}
.lib-body h4{margin-bottom:8px;}
.lib-body .lib-desc{font-size:14px;line-height:1.75;color:var(--text-2);flex:1;}
.lib-foot{
  margin-top:14px;padding-top:12px;border-top:1px solid var(--divider);
  display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);
}
.lib-foot .go{font-weight:600;color:var(--brand);}
.lib-card:hover .lib-foot .go{text-decoration:underline;text-underline-offset:3px;}

/* ============ 更新日历 ============ */
.calendar-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:6px;}
.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:14px;min-width:840px;}
.cal-day{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:16px 14px;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.cal-day:hover{border-color:rgba(91,63,232,.32);box-shadow:var(--sh-1);transform:translateY(-3px);}
.cal-day .dow{font-size:13px;color:var(--text-3);font-weight:600;}
.cal-day .dnum{font-size:22px;font-weight:800;color:var(--text);line-height:1.3;font-variant-numeric:tabular-nums;}
.cal-day .ctag{margin-top:10px;font-size:13px;font-weight:600;color:var(--brand-dark);line-height:1.6;}
.cal-day .ctime{margin-top:4px;font-size:12px;color:var(--text-3);}
.cal-day.is-today{background:var(--brand-soft);border-color:rgba(91,63,232,.35);}
.cal-day.is-today .dnum{color:var(--brand-dark);}

/* ============ 热度榜 ============ */
.rank-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:8px 24px;}
.rank-row{display:grid;grid-template-columns:44px 1fr auto;gap:16px;align-items:center;padding:18px 0;border-bottom:1px solid var(--divider);}
.rank-row:last-child{border-bottom:none;}
.rank-num{
  width:34px;height:34px;border-radius:9px;background:var(--lime);color:#241C05;
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:800;font-variant-numeric:tabular-nums;
}
.rank-row:nth-child(n+4) .rank-num{background:var(--brand-soft);color:var(--brand-dark);}
.rank-main .rank-title{font-size:16px;font-weight:700;color:var(--text);}
.rank-main .rank-sub{margin-top:4px;font-size:13px;color:var(--text-3);}
.rank-bar{margin-top:10px;height:6px;border-radius:var(--r-pill);background:var(--brand-soft);overflow:hidden;}
.rank-bar i{display:block;height:100%;border-radius:var(--r-pill);background:var(--brand);}
.rank-val{font-size:15px;font-weight:700;color:var(--brand-dark);font-variant-numeric:tabular-nums;}
@media screen and (max-width:639px){
  .rank-list{padding:4px 16px;}
  .rank-row{grid-template-columns:38px 1fr;gap:12px;}
  .rank-val{grid-column:2;justify-self:start;font-size:13px;color:var(--text-3);font-weight:600;}
}

/* ============ FAQ ============ */
.faq-list{max-width:900px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:12px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(91,63,232,.28);}
.faq-item[open]{border-color:rgba(91,63,232,.35);box-shadow:var(--sh-1);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:12px 20px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-q::-webkit-details-marker{display:none;}
.faq-q::after{
  content:"";flex:0 0 auto;width:16px;height:16px;
  background:
    linear-gradient(var(--brand),var(--brand)) center/16px 2px no-repeat,
    linear-gradient(var(--brand),var(--brand)) center/2px 16px no-repeat;
  transition:transform .24s ease;
}
.faq-item[open] .faq-q::after{
  background:linear-gradient(var(--brand),var(--brand)) center/16px 2px no-repeat;
}
.faq-a{padding:0 20px 20px;font-size:15.5px;line-height:1.85;color:var(--text-2);}
@media screen and (max-width:639px){
  .faq-q{font-size:16px;padding:12px 16px;min-height:56px;}
  .faq-a{padding:0 16px 18px;font-size:15px;}
}

/* ============ 相关分类 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.rel-item{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:22px 20px;
  box-shadow:var(--sh-1);transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.rel-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(91,63,232,.3);}
.rel-item .rel-kicker{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--brand);text-transform:uppercase;}
.rel-item h3{font-size:18px;margin:10px 0 8px;color:var(--text);}
.rel-item p{font-size:14px;line-height:1.75;color:var(--text-2);margin:0;}
.rel-item .rel-go{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:600;color:var(--brand);}
@media screen and (max-width:1023px){
  .rel-grid{grid-template-columns:repeat(2,1fr);}
}
@media screen and (max-width:639px){
  .rel-grid{grid-template-columns:1fr;gap:14px;}
}

/* ============ 深色 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--dark);border-radius:20px;
  padding:56px 48px;color:var(--dark-text);
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px),
    url("/assets/images/backpic/back-3.webp");
  background-size:64px 64px,64px 64px,cover;
  background-position:0 0,0 0,center;
  background-blend-mode:normal,normal,soft-light;
}
.cta-band h2{color:var(--dark-text);font-size:30px;}
.cta-band p{margin-top:12px;color:var(--dark-text-2);font-size:16px;line-height:1.8;max-width:620px;}
.cta-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.cta-note{font-size:12px;color:var(--dark-text-2);margin-top:16px;}
@media screen and (max-width:639px){
  .cta-band{padding:36px 22px;border-radius:16px;}
  .cta-band h2{font-size:23px;}
  .cta-actions .btn{width:100%;}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:var(--dark-text-2);padding:72px 0 0;margin-top:0;}
.footer-grid{padding-bottom:44px;}
.footer-col{margin-bottom:28px;}
.footer-logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800;letter-spacing:.01em;}
.footer-logo:hover{color:#fff;}
.footer-logo .brand-mark{background:var(--brand);}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:var(--dark-text-2);max-width:320px;}
.footer-socials{display:flex;gap:12px;margin-top:18px;}
.footer-socials a{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.16);color:var(--dark-text-2);font-size:13px;font-weight:600;
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.footer-socials a:hover{color:#fff;border-color:rgba(198,241,53,.6);background:rgba(198,241,53,.08);}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:18px;letter-spacing:.03em;}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul a{
  position:relative;display:inline-block;font-size:14px;color:var(--dark-text-2);line-height:1.6;padding-left:0;
  transition:color .18s ease,padding-left .18s ease;
}
.footer-col ul a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--lime);border-radius:2px;transition:height .18s ease;
}
.footer-col ul a:hover{color:#fff;padding-left:10px;}
.footer-col ul a:hover::before{height:14px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;font-size:12px;color:#8B8898;
}
.footer-bottom p{margin:0;}
@media screen and (max-width:639px){
  .site-footer{padding-top:52px;}
  .footer-desc{max-width:none;}
  .footer-bottom{flex-direction:column;gap:6px;}
}

/* ============ 回顶 ============ */
.to-top{
  position:fixed;right:22px;bottom:24px;z-index:130;
  width:44px;height:44px;border-radius:50%;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .28s ease,transform .28s ease,visibility .28s ease,background-color .18s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-dark);}
.to-top svg{width:18px;height:18px;fill:currentColor;}
@media screen and (max-width:639px){
  .to-top{right:14px;bottom:16px;}
}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .42s ease-out,transform .42s ease-out;}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}

/* roulang page: category5 */
:root{
  --brand:#5B3FE8;
  --brand-dark:#3F27C4;
  --brand-soft:#EDE9FF;
  --lime:#C6F135;
  --orange:#FF6B2C;
  --bg:#F6F4F1;
  --bg-soft:#FBFAF8;
  --ink:#14121F;
  --card:#FFFFFF;
  --border:#E8E4DE;
  --divider:#EFEBE6;
  --text:#1B1A24;
  --text-2:#5C5A6B;
  --text-3:#8B8898;
  --dark-text:#F2F1F7;
  --dark-text-2:#A9A6BF;
  --success:#12A66A;
  --warn:#E0A008;
  --error:#D93A3A;
  --r-lg:16px;
  --r-md:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 6px 18px rgba(20,18,31,.06);
  --sh-2:0 14px 34px rgba(20,18,31,.12);
  --sh-3:0 18px 44px rgba(20,18,31,.35);
  --sec-y:96px;
  --gap:12px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-md);}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--brand-dark);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:.01em;}
h1{font-size:40px;line-height:1.25;font-weight:800;}
h2{font-size:30px;line-height:1.35;font-weight:700;}
h3{font-size:21px;line-height:1.5;font-weight:700;}
h4{font-size:18px;line-height:1.55;font-weight:700;}
p{margin:0 0 1.2em;text-align:left;}
ul,ol{margin:0 0 1.2em;padding-left:1.2em;line-height:1.85;}
li{margin-bottom:.35em;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* 容器与栅格 */
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;}
.grid-x.grid-margin-x{margin-left:-8px;margin-right:-8px;}
.grid-x.grid-margin-x > .cell{padding-left:8px;padding-right:8px;}
@media screen and (min-width:640px){
  .grid-x.grid-margin-x{margin-left:-10px;margin-right:-10px;}
  .grid-x.grid-margin-x > .cell{padding-left:10px;padding-right:10px;}
}
@media screen and (min-width:1024px){
  .grid-x.grid-margin-x{margin-left:-12px;margin-right:-12px;}
  .grid-x.grid-margin-x > .cell{padding-left:12px;padding-right:12px;}
}

/* 顶部导航 */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  --nav-ink:#F2F1F7;
  --nav-sub:#C9C6DC;
  background:transparent;
  border-bottom:1px solid rgba(255,255,255,0);
  transition:background .28s ease-out,box-shadow .28s ease-out,border-color .28s ease-out;
}
.site-header.is-scrolled{
  background:#FFFFFF;
  border-bottom:1px solid var(--divider);
  box-shadow:var(--sh-1);
  --nav-ink:#1B1A24;
  --nav-sub:#5C5A6B;
}
.header-inner{
  height:72px;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
}
.nav-side{display:flex;align-items:center;gap:22px;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--nav-sub);
  padding:6px 2px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;bottom:-2px;
  width:0;height:2px;
  background:var(--brand);
  transition:width .22s ease-out;
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::before{
  content:"";
  display:inline-block;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--lime);
  margin-right:7px;
  vertical-align:middle;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  justify-self:center;
  color:var(--nav-ink);
  font-weight:800;
}
.brand:hover{color:var(--brand);}
.brand-mark{
  width:30px;height:30px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--brand) 0%,#7A63F2 100%);
  position:relative;
  flex:0 0 auto;
}
.brand-mark::after{
  content:"";
  position:absolute;
  left:8px;top:8px;
  width:9px;height:9px;
  border-radius:3px;
  background:var(--lime);
}
.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.15;
  font-size:16px;
  letter-spacing:.01em;
}
.brand-text span:last-child{font-size:13px;font-weight:600;color:var(--nav-sub);letter-spacing:.06em;}
.site-header.is-scrolled .brand-text span:last-child{color:var(--text-3);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid rgba(255,255,255,.24);
  border-radius:10px;
  background:transparent;
  cursor:pointer;
  padding:0;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.site-header.is-scrolled .nav-toggle{border-color:var(--border);}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--nav-ink);
  border-radius:2px;
  transition:transform .24s ease-out,opacity .18s ease-out;
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-drawer{
  position:fixed;
  top:72px;left:0;right:0;
  background:#FFFFFF;
  border-bottom:1px solid var(--divider);
  box-shadow:var(--sh-2);
  padding:8px 16px 20px;
  transform:translateY(-14px);
  opacity:0;
  pointer-events:none;
  transition:transform .26s ease-out,opacity .26s ease-out;
  z-index:119;
  max-height:70vh;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto;}
.drawer-link{
  display:flex;
  align-items:center;
  height:52px;
  font-size:18px;
  font-weight:600;
  color:var(--text);
  border-bottom:1px solid var(--divider);
}
.drawer-link.is-active{color:var(--brand);}
.drawer-cta{margin-top:16px;width:100%;}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  border:1.5px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:var(--brand);color:#FFFFFF;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-dark);color:#FFFFFF;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{background:var(--orange);color:#FFFFFF;border-color:#E4551A;}
.btn-accent:hover{background:#F05A19;color:#FFFFFF;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-ghost{background:#FFFFFF;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-2px);}
.btn-lime{background:var(--lime);color:var(--ink);}
.btn-lime:hover{background:#B8E52A;color:var(--ink);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-outline-dark{background:transparent;color:#F2F1F7;border-color:rgba(242,241,247,.42);}
.btn-outline-dark:hover{background:rgba(242,241,247,.12);color:#FFFFFF;border-color:#FFFFFF;}
.btn-sm{min-height:36px;padding:0 16px;font-size:14px;}
.btn-lg{min-height:52px;padding:0 28px;font-size:16px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* 徽章与标签 */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:600;
  padding:4px 10px;
  border-radius:var(--r-pill);
  line-height:1.6;
}
.badge-lime{background:var(--lime);color:#1B1A24;}
.badge-purple{background:var(--brand-soft);color:var(--brand-dark);}
.badge-ghost{background:rgba(255,255,255,.10);color:#E7E5F4;border:1px solid rgba(255,255,255,.18);}
.badge-line{background:#FFFFFF;border:1px solid var(--border);color:var(--text-2);}
.tag{
  display:inline-flex;
  align-items:center;
  height:32px;
  padding:0 14px;
  border-radius:var(--r-pill);
  background:#FFFFFF;
  border:1px solid var(--border);
  color:var(--text-2);
  font-size:13px;
  transition:all .18s ease-out;
}
.tag:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark);}

/* 页头 */
.page-hero{
  position:relative;
  background:var(--ink);
  color:var(--dark-text);
  padding:150px 0 72px;
  overflow:hidden;
}
.page-hero-bg{
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.26;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.page-hero .grid-container{position:relative;z-index:2;}
.page-hero h1{color:#FFFFFF;max-width:16em;}
.page-hero-lead{
  color:var(--dark-text-2);
  font-size:17px;
  margin:18px 0 24px;
  max-width:44em;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--dark-text-2);
  margin-bottom:22px;
}
.breadcrumb a{color:#C9C6DC;}
.breadcrumb a:hover{color:#FFFFFF;}
.breadcrumb .current{color:#F2F1F7;}

/* 板块 */
.section{padding:var(--sec-y) 0;}
.section-soft{background:var(--bg-soft);}
.section-white{background:#FFFFFF;}
.section-dark{background:var(--ink);color:var(--dark-text);}
.section-dark h2,.section-dark h3{color:#FFFFFF;}
.section-head{margin-bottom:36px;max-width:52em;}
.section-head p{color:var(--text-2);margin:12px 0 0;}
.section-dark .section-head p{color:var(--dark-text-2);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--brand);
  letter-spacing:.04em;
  text-transform:none;
  margin-bottom:12px;
}
.eyebrow::before{
  content:"";
  width:18px;height:2px;
  background:var(--lime);
  border-radius:2px;
}
.section-dark .eyebrow{color:var(--lime);}
.section-dark .eyebrow::before{background:var(--lime);}

/* 速查条 */
.quick-bar{
  background:#FFFFFF;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:24px;
  margin-top:-48px;
  position:relative;
  z-index:5;
}
.search-box{
  display:flex;
  gap:10px;
  align-items:stretch;
  margin-bottom:18px;
}
.search-box input{
  flex:1 1 auto;
  min-width:0;
  height:46px;
  padding:0 16px;
  border:1px solid var(--border);
  border-radius:var(--r-btn);
  background:#FBFAF8;
  color:var(--text);
  font-size:15px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out,background .18s ease-out;
}
.search-box input::placeholder{color:var(--text-3);}
.search-box input:focus{
  outline:none;
  background:#FFFFFF;
  border-color:var(--brand);
  box-shadow:0 0 0 2px var(--brand-soft);
}
.quick-tags{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.quick-tags-label{font-size:13px;color:var(--text-3);margin-right:2px;}

/* FAQ */
.faq-group + .faq-group{margin-top:56px;}
.faq-list{
  border-top:1px solid var(--divider);
}
.faq-item{
  border-bottom:1px solid var(--divider);
  background:transparent;
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:60px;
  padding:14px 4px;
  transition:background .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--bg-soft);}
.faq-item summary:hover .faq-q{color:var(--brand);}
.faq-q{
  font-size:17px;
  font-weight:600;
  color:var(--text);
  transition:color .18s ease-out;
}
.faq-icon{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:50%;
  border:1.5px solid var(--border);
  position:relative;
  transition:transform .24s ease-out,border-color .24s ease-out,background .24s ease-out;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--brand);
  transform:translate(-50%,-50%);
  border-radius:2px;
}
.faq-icon::before{width:11px;height:1.8px;}
.faq-icon::after{width:1.8px;height:11px;transition:opacity .2s ease-out;}
.faq-item[open] .faq-icon{transform:rotate(180deg);border-color:var(--brand);background:var(--brand-soft);}
.faq-item[open] .faq-icon::after{opacity:0;}
.faq-a{
  padding:0 46px 20px 4px;
  color:var(--text-2);
  font-size:16px;
  line-height:1.85;
}
.faq-a p:last-child{margin-bottom:0;}
.faq-a ul{padding-left:1.2em;margin-bottom:0;}
.faq-hint{
  display:block;
  margin-top:10px;
  font-size:13px;
  color:var(--text-3);
}

/* 排查路径 */
.step-row{
  display:grid;
  grid-template-columns:repeat(1,1fr);
  gap:24px;
  align-items:center;
}
.step-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--border);
  box-shadow:var(--sh-1);
  background:#FFFFFF;
  aspect-ratio:16/10;
}
.step-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.step-list{list-style:none;margin:0;padding:0;counter-reset:step;}
.step-list li{
  position:relative;
  counter-increment:step;
  padding:16px 0 16px 60px;
  border-bottom:1px dashed var(--divider);
}
.step-list li:last-child{border-bottom:none;}
.step-list li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;
  left:0;top:16px;
  width:40px;height:40px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--lime);
  color:#1B1A24;
  font-size:14px;
  font-weight:700;
  border-radius:10px;
}
.step-list strong{display:block;font-size:17px;font-weight:700;margin-bottom:4px;}
.step-list span{color:var(--text-2);font-size:15px;line-height:1.8;}

/* 相关分类 */
.related-grid{display:grid;grid-template-columns:repeat(1,1fr);gap:16px;}
.related-card{
  display:block;
  background:#FFFFFF;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:20px;
  box-shadow:var(--sh-1);
  transition:transform .24s ease-out,box-shadow .24s ease-out,border-color .24s ease-out;
}
.related-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:rgba(91,63,232,.3);
}
.related-card .idx{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:30px;height:30px;
  border-radius:9px;
  background:var(--brand-soft);
  color:var(--brand-dark);
  font-size:13px;
  font-weight:700;
  margin-bottom:12px;
}
.related-card h3{font-size:18px;margin-bottom:6px;}
.related-card p{font-size:14px;color:var(--text-2);margin:0 0 10px;line-height:1.75;}
.related-card .arrow{font-size:14px;font-weight:600;color:var(--brand);}

/* CTA 条 */
.cta-band{
  background:var(--ink);
  color:var(--dark-text);
  border-radius:var(--r-lg);
  padding:44px 40px;
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
  align-items:center;
  box-shadow:var(--sh-3);
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-60px;top:-60px;
  width:220px;height:220px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(198,241,53,.20) 0%,rgba(198,241,53,0) 70%);
}
.cta-band h2{font-size:26px;color:#FFFFFF;margin-bottom:10px;}
.cta-band p{color:var(--dark-text-2);margin:0;max-width:48em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:2;}

/* 页脚 */
.site-footer{background:var(--ink);color:var(--dark-text-2);padding:64px 0 0;margin-top:0;}
.footer-grid{padding-bottom:40px;}
.footer-col h4{color:#FFFFFF;font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{
  color:var(--dark-text-2);
  font-size:14px;
  position:relative;
  padding-left:0;
  transition:color .18s ease-out,padding-left .18s ease-out;
}
.footer-col a:hover{color:#FFFFFF;padding-left:10px;}
.footer-col a:hover::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:2px;height:12px;
  margin-top:-6px;
  background:var(--lime);
  border-radius:2px;
}
.footer-logo{
  display:flex;
  align-items:center;
  gap:10px;
  color:#FFFFFF;
  font-weight:800;
  font-size:16px;
  margin-bottom:14px;
}
.footer-logo:hover{color:var(--lime);}
.footer-desc{font-size:14px;line-height:1.85;color:var(--dark-text-2);margin-bottom:16px;}
.footer-socials{display:flex;gap:10px;flex-wrap:wrap;}
.footer-socials a{
  display:inline-flex;
  align-items:center;
  height:32px;
  padding:0 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.16);
  font-size:13px;
  color:var(--dark-text-2);
}
.footer-socials a:hover{background:rgba(255,255,255,.08);color:#FFFFFF;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:18px 0 24px;
  display:flex;
  flex-wrap:wrap;
  gap:8px 24px;
  justify-content:space-between;
  font-size:12px;
  color:#8B8898;
}
.footer-bottom p{margin:0;}

/* 回顶 */
.to-top{
  position:fixed;
  right:20px;bottom:24px;
  width:44px;height:44px;
  border-radius:50%;
  background:var(--brand);
  color:#FFFFFF;
  border:none;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:var(--sh-2);
  cursor:pointer;
  opacity:0;
  pointer-events:none;
  transform:translateY(10px);
  transition:opacity .24s ease-out,transform .24s ease-out,background .18s ease-out;
  z-index:130;
}
.to-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0);}
.to-top:hover{background:var(--brand-dark);}
.to-top svg{width:18px;height:18px;fill:none;stroke:#FFFFFF;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .42s ease-out,transform .42s ease-out;}
.reveal.in-view{opacity:1;transform:none;}

@media screen and (max-width:1023px){
  .nav-side{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{grid-template-columns:auto 1fr auto;height:72px;}
  .brand{justify-self:center;}
  .header-cta-slot{display:flex;justify-content:flex-end;}
  h1{font-size:32px;}
  h2{font-size:25px;}
  :root{--sec-y:80px;}
  .page-hero{padding:132px 0 64px;}
}
@media screen and (max-width:639px){
  body{font-size:16px;}
  h1{font-size:28px;}
  h2{font-size:23px;}
  h3{font-size:18px;}
  :root{--sec-y:60px;}
  .grid-container{padding-left:16px;padding-right:16px;}
  .page-hero{padding:120px 0 56px;}
  .quick-bar{padding:18px;border-radius:var(--r-md);margin-top:-36px;}
  .search-box{flex-direction:column;}
  .search-box .btn{width:100%;}
  .faq-a{padding:0 4px 18px 4px;}
  .cta-band{padding:28px 22px;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .brand-text{font-size:15px;}
}
@media screen and (min-width:640px){
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .cta-band{grid-template-columns:1.4fr .9fr;padding:48px 44px;}
}
@media screen and (min-width:1024px){
  .step-row{grid-template-columns:5fr 7fr;gap:48px;}
  .related-grid{grid-template-columns:repeat(3,1fr);}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
}