/* roulang page: index */
/* ===================== 设计变量 ===================== */
:root{
  --bg-base:#0A0C12;
  --bg-panel:#12151E;
  --bg-elevated:#1A1F2C;
  --bg-deep:#07090E;
  --line:#262C3B;
  --line-soft:rgba(255,255,255,.06);
  --text-1:#E9EDF5;
  --text-2:#A3ACBE;
  --text-3:#6E7789;
  --brand:#1FE0A0;
  --brand-strong:#04C58A;
  --accent:#FF6A2B;
  --brand-ink:#06110D;

  --tier-1:#1FE0A0;
  --tier-2:#38CFFF;
  --tier-3:#8A6BFF;
  --tier-4:#FFC24B;

  --r-card:14px;
  --r-panel:16px;
  --r-btn:10px;
  --r-chip:999px;

  --sh-1:0 1px 2px rgba(0,0,0,.45);
  --sh-2:0 18px 40px -20px rgba(0,0,0,.9);
  --glow-brand:0 0 0 1px rgba(31,224,160,.35), 0 0 24px -6px rgba(31,224,160,.5);

  --nav-h:64px;
  --sec-y:88px;

  --bs-body-bg:#0A0C12;
  --bs-body-color:#E9EDF5;
  --bs-border-color:#262C3B;
  --bs-primary:#1FE0A0;
  --bs-primary-rgb:31,224,160;
  --bs-link-color:#1FE0A0;
  --bs-link-hover-color:#04C58A;
  --bs-emphasis-color:#E9EDF5;
  --bs-secondary-color:#A3ACBE;
  --bs-body-font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --bs-font-sans-serif:system-ui,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --bs-body-font-size:17px;
  --bs-border-radius:14px;
  --bs-border-radius-lg:16px;
  --bs-border-radius-sm:10px;
}

/* ===================== 基础 reset ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 20px);}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out,border-color .18s ease-out;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;}
h1,h2,h3,h4,h5{margin:0;line-height:1.3;font-weight:700;letter-spacing:-.01em;}
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(--brand);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(31,224,160,.28);color:#fff;}

/* ===================== 容器 ===================== */
.container,
.container-sm,.container-md,.container-lg,.container-xl,.container-xxl,
.container-fluid{
  width:100%;
  max-width:1200px;
  margin-inline:auto;
  padding-inline:20px;
}
.reading{max-width:760px;margin-inline:auto;}

/* ===================== 通用排版 ===================== */
.h1{
  font-size:44px;
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.22;
}
.h2{
  font-size:36px;
  font-weight:700;
  letter-spacing:-.015em;
  line-height:1.28;
}
.h3{font-size:22px;font-weight:600;line-height:1.4;}
.lead{font-size:17px;line-height:1.85;color:var(--text-2);}
.muted{color:var(--text-3);}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";font-family:"DIN Alternate","Bahnschrift","Arial Narrow",system-ui,sans-serif;}

.section{padding-block:var(--sec-y);position:relative;}
.section-alt{background:var(--bg-deep);border-block:1px solid var(--line-soft);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-inline:auto;text-align:center;}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand);font-weight:700;margin-bottom:14px;
}
.section-kicker::before{
  content:"";width:22px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),transparent);
}
.section-title{margin-bottom:14px;}
.section-desc{color:var(--text-2);font-size:16.5px;line-height:1.85;}

/* ===================== 按钮 ===================== */
.btn-neon,
.btn-ghost,
.btn-arrow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  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-neon{
  background:var(--brand);
  color:var(--brand-ink);
  box-shadow:0 0 0 1px rgba(31,224,160,.35),0 0 24px -8px rgba(31,224,160,.55);
}
.btn-neon:hover{background:#38ecad;color:var(--brand-ink);box-shadow:0 0 0 1px rgba(31,224,160,.6),0 0 30px -4px rgba(31,224,160,.7);}
.btn-neon:active{transform:scale(.98);}
.btn-ghost{
  background:transparent;color:var(--text-1);
  border:1px solid var(--line);
}
.btn-ghost:hover{border-color:rgba(31,224,160,.65);color:var(--text-1);}
.btn-ghost:active{transform:scale(.98);}
.btn-arrow{
  color:var(--brand);padding:0;min-height:auto;font-weight:600;gap:6px;
}
.btn-arrow::after{content:"→";transition:transform .18s ease-out;}
.btn-arrow:hover{color:#5cf0bd;}
.btn-arrow:hover::after{transform:translateX(2px);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* ===================== 标签 / 徽章 ===================== */
.badge-cat{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-chip);
  font-size:12px;font-weight:600;line-height:1;
  color:var(--brand);
  border:1px solid rgba(31,224,160,.4);
  background:rgba(31,224,160,.12);
}
.badge-tier{
  display:inline-flex;align-items:center;height:22px;padding:0 9px;
  border-radius:var(--r-chip);font-size:12px;font-weight:700;line-height:1;
  border:1px solid currentColor;
}
.badge-tier.t1{color:var(--tier-1);}
.badge-tier.t2{color:var(--tier-2);}
.badge-tier.t3{color:var(--tier-3);}
.badge-tier.t4{color:var(--tier-4);}

/* ===================== 顶栏导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(10,12,18,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,224,160,.4),transparent);
  pointer-events:none;
}
.nav-inner{
  display:flex;align-items:center;gap:28px;
  min-height:var(--nav-h);
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-weight:800;font-size:18px;letter-spacing:-.01em;color:var(--text-1);
  flex-shrink:0;
}
.brand-mark{display:inline-flex;width:30px;height:30px;align-items:center;justify-content:center;}
.brand-mark svg{width:30px;height:30px;display:block;}
.brand:hover{color:var(--text-1);}
.brand:hover .brand-mark{filter:drop-shadow(0 0 8px rgba(31,224,160,.55));}

.nav-links{
  display:flex;align-items:center;gap:26px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 0;
  transition:color .18s ease-out;
}
.nav-link:hover{color:var(--text-1);}
.nav-link.active{
  color:var(--text-1);font-weight:600;
}
.nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-19px;height:2px;
  background:var(--brand);
  box-shadow:0 0 12px 0 rgba(31,224,160,.8);
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-toggle{
  display:inline-flex;align-items:center;gap:6px;
  height:38px;padding:0 12px;border-radius:var(--r-btn);
  border:1px solid var(--line);
  color:var(--text-2);font-size:14px;font-weight:500;
  transition:border-color .18s ease-out,color .18s ease-out;
}
.search-toggle:hover{border-color:rgba(31,224,160,.6);color:var(--text-1);}
.search-toggle svg{width:15px;height:15px;}
.drawer-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-btn);
  border:1px solid var(--line);align-items:center;justify-content:center;
}
.drawer-toggle span{display:block;width:16px;height:1.5px;background:var(--text-1);position:relative;}
.drawer-toggle span::before,
.drawer-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1.5px;background:var(--text-1);
}
.drawer-toggle span::before{top:-5px;}
.drawer-toggle span::after{top:5px;}

.search-panel{
  border-top:1px solid var(--line-soft);
  background:rgba(7,9,14,.96);
  padding:20px 0 24px;
}
.search-panel[hidden]{display:none;}
.search-inner{display:flex;gap:12px;flex-wrap:wrap;align-items:center;}
.search-input{
  flex:1 1 280px;min-height:46px;padding:0 16px;border-radius:var(--r-btn);
  background:var(--bg-panel);border:1px solid var(--line);color:var(--text-1);
  font-size:15px;outline:none;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.search-input::placeholder{color:var(--text-3);}
.search-input:focus{border-color:rgba(31,224,160,.6);box-shadow:0 0 0 3px rgba(31,224,160,.14);}
.search-hot{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;align-items:center;}
.search-hot .label{font-size:13px;color:var(--text-3);margin-right:4px;}
.chip{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  border-radius:var(--r-chip);font-size:13px;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.02);
  transition:color .18s ease-out,border-color .18s ease-out;
}
.chip:hover{color:var(--brand);border-color:rgba(31,224,160,.5);}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,6,10,.68);
  -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;z-index:1040;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:1050;
  width:min(88vw,360px);
  background:var(--bg-panel);
  border-left:1px solid var(--line);
  transform:translateX(102%);
  transition:transform .24s ease-out;
  display:flex;flex-direction:column;
  padding:20px;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{
  width:36px;height:36px;border-radius:var(--r-btn);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--text-2);
}
.drawer-close:hover{color:var(--text-1);border-color:rgba(31,224,160,.5);}
.drawer-menu{display:flex;flex-direction:column;gap:2px;}
.drawer-menu a{
  display:flex;align-items:center;min-height:56px;
  padding:0 14px;border-radius:var(--r-btn);
  font-size:16px;color:var(--text-2);
}
.drawer-menu a:hover{background:var(--bg-elevated);color:var(--text-1);}
.drawer-menu a.active{color:var(--brand);background:rgba(31,224,160,.08);}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line-soft);}

/* ===================== Hero ===================== */
.hero{
  position:relative;overflow:hidden;
  padding-block:88px 80px;
  border-bottom:1px solid var(--line-soft);
}
.hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.5;
  transform:scale(1.02);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(760px 460px at 88% 18%, rgba(31,224,160,.16), transparent 68%),
    radial-gradient(560px 380px at 6% 88%, rgba(138,107,255,.12), transparent 70%),
    linear-gradient(180deg, rgba(10,12,18,.78) 0%, rgba(10,12,18,.92) 62%, var(--bg-base) 100%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;gap:56px;align-items:center;
  grid-template-columns:1fr;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  height:30px;padding:0 14px;border-radius:var(--r-chip);
  font-size:13px;font-weight:600;color:var(--brand);
  border:1px solid rgba(31,224,160,.35);
  background:rgba(31,224,160,.08);
  margin-bottom:22px;
}
.hero-eyebrow::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 10px 1px rgba(31,224,160,.9);
}
.hero h1{font-size:44px;font-weight:800;letter-spacing:-.02em;line-height:1.2;margin-bottom:20px;}
.hero-sub{font-size:17.5px;line-height:1.85;color:var(--text-2);max-width:560px;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:14px 40px;
  padding-top:26px;border-top:1px solid var(--line-soft);
}
.hero-stat{min-width:96px;}
.hero-stat .v{
  font-size:26px;font-weight:800;line-height:1.2;color:var(--text-1);
}
.hero-stat .v em{font-style:normal;color:var(--brand);font-size:16px;font-weight:700;margin-left:2px;}
.hero-stat .k{font-size:13.5px;color:var(--text-3);margin-top:2px;}

.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--r-panel);
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
  background:#171C27;
}
.float-card{
  position:absolute;left:-22px;bottom:-22px;
  width:min(268px,80%);
  background:rgba(18,21,30,.94);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-radius:var(--r-card);
  padding:18px 20px;
  box-shadow:0 0 0 1px rgba(31,224,160,.35),0 0 24px -6px rgba(31,224,160,.5),var(--sh-2);
}
.float-card .fc-title{font-size:13px;color:var(--text-3);margin-bottom:10px;}
.float-card .fc-row{display:flex;align-items:baseline;justify-content:space-between;font-size:14px;color:var(--text-2);padding:5px 0;}
.float-card .fc-row b{font-size:19px;font-weight:800;color:var(--text-1);}
.float-card .fc-row b.accent{color:var(--accent);}

/* ===================== 权益对比表 ===================== */
.compare-wrap{
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--r-panel);
  overflow:hidden;
}
.compare-scroll{overflow-x:auto;overflow-y:auto;max-height:760px;}
table.compare{
  width:100%;border-collapse:separate;border-spacing:0;min-width:860px;
  margin:0;color:var(--text-1);
}
table.compare thead th{
  position:sticky;top:0;z-index:3;
  background:var(--bg-elevated);
  padding:18px 20px;text-align:left;
  font-size:14px;font-weight:700;color:var(--text-2);
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
table.compare thead th:first-child{left:0;z-index:5;}
table.compare thead th .th-name{font-size:16px;color:var(--text-1);display:block;margin-bottom:3px;}
table.compare thead th .th-price{font-size:13px;color:var(--text-3);font-weight:500;}
table.compare th.col-rec,
table.compare td.col-rec{background:rgba(31,224,160,.06);}
table.compare thead th.col-rec{
  position:relative;
  box-shadow:inset 1px 0 0 rgba(31,224,160,.4),inset -1px 0 0 rgba(31,224,160,.4);
}
table.compare thead th.col-rec .rec-tag{
  display:inline-flex;align-items:center;height:20px;padding:0 8px;margin-left:6px;
  border-radius:var(--r-chip);font-size:11px;font-weight:700;
  background:var(--brand);color:var(--brand-ink);vertical-align:middle;
}
table.compare tbody th{
  position:sticky;left:0;z-index:2;
  background:var(--bg-panel);
  text-align:left;font-size:15px;font-weight:500;color:var(--text-2);
  padding:16px 20px;border-bottom:1px solid var(--line-soft);
  white-space:nowrap;
}
table.compare tbody td{
  padding:16px 20px;border-bottom:1px solid var(--line-soft);
  font-size:15px;color:var(--text-2);
  font-variant-numeric:tabular-nums;
}
table.compare tbody tr:hover td,
table.compare tbody tr:hover th{background:var(--bg-elevated);}
table.compare tbody tr:hover td.col-rec{background:rgba(31,224,160,.1);}
table.compare tbody tr:last-child td,
table.compare tbody tr:last-child th{border-bottom:0;}
.tick{color:var(--brand);font-weight:700;}
.tick-weak{color:var(--text-3);opacity:.55;}
.compare-note{
  display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;
  padding:16px 20px;border-top:1px solid var(--line-soft);
  font-size:13.5px;color:var(--text-3);
  background:var(--bg-deep);
}
.compare-note span{display:inline-flex;align-items:center;gap:6px;}
.compare-note i{width:7px;height:7px;border-radius:50%;background:var(--brand);display:inline-block;font-style:normal;}

/* 移动端手风琴对照 */
.compare-accordion{display:none;}
.tier-acc{
  background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;
}
.tier-acc summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:16px 18px;font-size:16px;font-weight:600;color:var(--text-1);
}
.tier-acc summary::-webkit-details-marker{display:none;}
.tier-acc summary .acc-bar{width:4px;height:18px;border-radius:2px;background:var(--tier-1);}
.tier-acc.t2 summary .acc-bar{background:var(--tier-2);}
.tier-acc.t3 summary .acc-bar{background:var(--tier-3);}
.tier-acc.t4 summary .acc-bar{background:var(--tier-4);}
.tier-acc summary .acc-plus{
  width:18px;height:18px;position:relative;flex-shrink:0;
}
.tier-acc summary .acc-plus::before,
.tier-acc summary .acc-plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);
  transform:translate(-50%,-50%);transition:transform .2s ease-out,opacity .2s ease-out;
}
.tier-acc summary .acc-plus::before{width:12px;height:1.6px;}
.tier-acc summary .acc-plus::after{width:1.6px;height:12px;}
.tier-acc[open] summary .acc-plus::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.tier-acc .acc-body{padding:0 18px 18px;border-top:1px solid var(--line-soft);}
.tier-acc .acc-body dl{margin:14px 0 0;display:grid;grid-template-columns:1fr auto;gap:10px 16px;font-size:14.5px;}
.tier-acc .acc-body dt{color:var(--text-2);}
.tier-acc .acc-body dd{margin:0;text-align:right;color:var(--text-2);font-variant-numeric:tabular-nums;}

/* ===================== 等级卡 ===================== */
.grid{display:grid;gap:24px;grid-template-columns:1fr;}
.tier-card{
  position:relative;
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px 24px;
  display:flex;flex-direction:column;
  overflow:hidden;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.tier-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
}
.tier-card.t1::before{background:linear-gradient(90deg,var(--tier-1),rgba(31,224,160,.15));}
.tier-card.t2::before{background:linear-gradient(90deg,var(--tier-2),rgba(56,207,255,.15));}
.tier-card.t3::before{background:linear-gradient(90deg,var(--tier-3),rgba(138,107,255,.15));}
.tier-card.t4::before{background:linear-gradient(90deg,var(--tier-4),rgba(255,194,75,.15));}
.tier-card:hover{transform:translateY(-2px);border-color:rgba(31,224,160,.45);box-shadow:var(--sh-2);}
.tier-card .tc-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px;}
.tier-card .tc-name{font-size:20px;font-weight:700;}
.tier-card .tc-index{
  font-size:13px;font-weight:700;color:var(--text-3);
  font-variant-numeric:tabular-nums;letter-spacing:.08em;
}
.tier-card .tc-desc{font-size:14.5px;line-height:1.8;color:var(--text-2);margin-bottom:18px;min-height:52px;}
.tier-card .tc-list{flex:1;display:flex;flex-direction:column;gap:11px;margin-bottom:22px;}
.tier-card .tc-list li{
  position:relative;padding-left:22px;font-size:14.5px;line-height:1.7;color:var(--text-2);
}
.tier-card .tc-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:2px;
  background:rgba(31,224,160,.85);
}
.tier-card.t2 .tc-list li::before{background:rgba(56,207,255,.85);}
.tier-card.t3 .tc-list li::before{background:rgba(138,107,255,.9);}
.tier-card.t4 .tc-list li::before{background:rgba(255,194,75,.9);}
.tier-card .btn-ghost{width:100%;}

/* ===================== 内容卡 ===================== */
.card-img{
  position:relative;border-radius:var(--r-card) var(--r-card) 0 0;overflow:hidden;
  background:#171C27;
}
.card-img img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.card-img::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(10,12,18,.5) 100%);
  pointer-events:none;
}
.content-card{
  display:flex;flex-direction:column;
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.content-card:hover{transform:translateY(-2px);border-color:rgba(31,224,160,.45);box-shadow:var(--sh-2);}
.content-card .cc-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.content-card .cc-body .badge-cat{margin-bottom:12px;align-self:flex-start;}
.content-card h3{
  font-size:18px;font-weight:600;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.content-card h3 a:hover{color:var(--brand);}
.content-card .cc-sum{
  font-size:14.5px;line-height:1.8;color:var(--text-2);margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.content-card .cc-meta{
  margin-top:auto;display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;
}
.content-card .cc-meta .sep{opacity:.6;}

/* ===================== 数据证据条 ===================== */
.stat-strip{
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--r-panel);
  padding:36px 24px;
  display:grid;gap:28px;grid-template-columns:1fr;
}
.stat-block{text-align:center;padding:0 12px;}
.stat-block .sv{
  font-size:36px;font-weight:800;line-height:1.15;
  color:var(--text-1);font-variant-numeric:tabular-nums;
}
.stat-block .sv em{font-style:normal;font-size:18px;color:var(--brand);margin-left:3px;}
.stat-block .sl{font-size:14.5px;color:var(--text-2);margin-top:8px;}
.stat-block .sd{font-size:13px;color:var(--text-3);margin-top:4px;}

/* ===================== FAQ ===================== */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:border-color .2s ease-out;
}
.faq-item[open]{border-color:rgba(31,224,160,.45);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;
  font-size:16.5px;font-weight:600;line-height:1.8;color:var(--text-1);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-icon{
  position:relative;width:20px;height:20px;flex-shrink:0;
}
.faq-icon::before,
.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);
  transform:translate(-50%,-50%);
  transition:transform .2s ease-out,opacity .2s ease-out;
}
.faq-icon::before{width:13px;height:1.8px;}
.faq-icon::after{width:1.8px;height:13px;}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-body{padding:0 22px 22px;font-size:15.5px;line-height:1.85;color:var(--text-2);}

/* ===================== CTA 面板 ===================== */
.cta-panel{
  position:relative;overflow:hidden;
  display:grid;gap:36px;grid-template-columns:1fr;
  background:linear-gradient(140deg,var(--bg-elevated) 0%,var(--bg-panel) 62%);
  border:1px solid rgba(31,224,160,.28);
  border-radius:var(--r-panel);
  padding:44px 28px;
  box-shadow:0 0 0 1px rgba(31,224,160,.06),var(--sh-2);
}
.cta-panel::after{
  content:"";position:absolute;right:-140px;top:-140px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,224,160,.2),transparent 66%);
  pointer-events:none;
}
.cta-left{position:relative;z-index:1;}
.cta-left h2{font-size:30px;font-weight:700;line-height:1.32;margin-bottom:14px;}
.cta-left .lead{color:var(--text-2);margin-bottom:24px;}
.cta-points{display:flex;flex-direction:column;gap:12px;}
.cta-points li{position:relative;padding-left:26px;font-size:15px;color:var(--text-2);}
.cta-points li::before{
  content:"";position:absolute;left:0;top:.55em;width:14px;height:14px;border-radius:50%;
  background:rgba(31,224,160,.14);
  border:1px solid rgba(31,224,160,.5);
}
.cta-points li::after{
  content:"";position:absolute;left:5px;top:calc(.55em + 4.5px);width:4px;height:4px;border-radius:50%;
  background:var(--brand);
}
.cta-form{
  position:relative;z-index:1;
  background:rgba(10,12,18,.6);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px;
}
.cta-form .cf-label{font-size:14.5px;font-weight:600;margin-bottom:10px;display:block;}
.cta-form .cf-input{
  width:100%;min-height:48px;padding:0 16px;margin-bottom:14px;
  border-radius:var(--r-btn);
  background:var(--bg-panel);
  border:1px solid var(--line);
  color:var(--text-1);font-size:15px;outline:none;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.cta-form .cf-input::placeholder{color:var(--text-3);}
.cta-form .cf-input:focus{border-color:rgba(31,224,160,.6);box-shadow:0 0 0 3px rgba(31,224,160,.14);}
.form-tip{font-size:13.5px;margin-top:12px;min-height:20px;color:var(--text-3);}
.form-tip.ok{color:var(--brand);}
.form-tip.err{color:var(--accent);}
.cf-note{font-size:12.5px;line-height:1.7;color:var(--text-3);margin-top:10px;}

/* ===================== 最新资讯 ===================== */
.section-head-row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;
  margin-bottom:36px;
}
.news-card{
  display:flex;flex-direction:column;
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 22px 20px;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.news-card:hover{transform:translateY(-2px);border-color:rgba(31,224,160,.45);box-shadow:var(--sh-2);}
.news-card .badge-cat{align-self:flex-start;margin-bottom:14px;}
.news-card h3{
  font-size:18px;font-weight:600;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card h3 a:hover{color:var(--brand);}
.news-card .news-summary{
  font-size:14.5px;line-height:1.8;color:var(--text-2);margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card .news-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line-soft);
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;
}
.empty-state{
  min-height:240px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  background:var(--bg-panel);
  border:1px dashed var(--line);
  border-radius:var(--r-panel);
  text-align:center;padding:40px 24px;
}
.empty-mark{
  width:76px;height:56px;border-radius:10px;
  border:1px solid var(--line);
  position:relative;opacity:.85;
}
.empty-mark::before,
.empty-mark::after{
  content:"";position:absolute;left:14px;right:34px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,rgba(31,224,160,.7),rgba(31,224,160,.05));
}
.empty-mark::before{top:18px;}
.empty-mark::after{top:30px;right:22px;}
.empty-state p{font-size:15px;color:var(--text-2);margin:0;}

/* ===================== 页脚 ===================== */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  padding-top:64px;
}
.footer-grid{
  display:grid;gap:40px;grid-template-columns:1fr;
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14.5px;line-height:1.85;color:var(--text-2);max-width:340px;margin-bottom:20px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.footer-col h4{
  font-size:14px;font-weight:700;color:var(--text-1);
  letter-spacing:.06em;margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col li{font-size:14.5px;color:var(--text-2);}
.footer-col a{color:var(--text-2);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  border-top:1px solid var(--line-soft);
  padding-block:22px;
}
.footer-bottom-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom-inner a{color:var(--text-3);}
.footer-bottom-inner a:hover{color:var(--brand);}

/* ===================== 断点 ===================== */
@media (min-width:576px){
  .cta-panel{padding:48px 36px;}
  .stat-strip{padding:40px 32px;gap:32px;}
}
@media (min-width:768px){
  .grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .hero-grid{grid-template-columns:1fr 1fr;gap:44px;}
  .hero h1{font-size:38px;}
  .cta-panel{grid-template-columns:1.1fr .9fr;align-items:center;}
}
@media (min-width:992px){
  .grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}
  .grid-4{grid-template-columns:repeat(3,minmax(0,1fr));}
  .stat-strip{grid-template-columns:repeat(4,minmax(0,1fr));}
  .hero{padding-block:104px 92px;}
  .hero h1{font-size:42px;}
  .compare-scroll{max-height:none;}
}
@media (min-width:1200px){
  .grid-4{grid-template-columns:repeat(4,minmax(0,1fr));}
  .hero h1{font-size:44px;}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;}
}
@media (max-width:991px){
  :root{--sec-y:64px;}
  .nav-links{display:none;}
  .search-toggle{display:none;}
  .drawer-toggle{display:inline-flex;}
  .h2{font-size:28px;}
  .compare-scroll{display:none;}
  .compare-accordion{display:block;}
  .compare-note{border-radius:0;}
}
@media (max-width:767px){
  :root{--sec-y:56px;--nav-h:56px;}
  body{font-size:16.5px;}
  .hero{padding-block:56px 64px;}
  .hero h1{font-size:28px;line-height:1.3;}
  .hero-sub{font-size:15.5px;}
  .h1{font-size:28px;}
  .h2{font-size:25px;}
  .section-head{margin-bottom:32px;}
  .hero-actions{width:100%;}
  .hero-actions .btn-neon,
  .hero-actions .btn-ghost{flex:1 1 auto;min-height:48px;}
  .hero-stats{gap:18px 28px;}
  .hero-stat .v{font-size:22px;}
  .float-card{position:static;width:100%;margin-top:16px;left:auto;bottom:auto;}
  .hero-media img{aspect-ratio:4/3;}
  .cta-left h2{font-size:23px;}
  .stat-block .sv{font-size:29px;}
  .footer-bottom-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container,.container-sm,.container-md,.container-lg,.container-xl,.container-xxl{padding-inline:16px;}
  .hero-eyebrow{font-size:12px;}
  .btn-neon,.btn-ghost{font-size:14.5px;padding:0 16px;}
  .cta-form{padding:20px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg-base:#0A0C12;
  --bg-panel:#12151E;
  --bg-elevated:#1A1F2C;
  --bg-deep:#07090E;
  --line:#262C3B;
  --line-soft:rgba(255,255,255,.06);
  --text-1:#E9EDF5;
  --text-2:#A3ACBE;
  --text-3:#6E7789;
  --brand:#1FE0A0;
  --brand-strong:#04C58A;
  --accent:#FF6A2B;
  --brand-ink:#06110D;
  --tier-1:#1FE0A0;
  --tier-2:#38CFFF;
  --tier-3:#8A6BFF;
  --tier-4:#FFC24B;
  --r-card:14px;
  --r-panel:16px;
  --r-btn:10px;
  --r-chip:999px;
  --sh-1:0 1px 2px rgba(0,0,0,.45);
  --sh-2:0 18px 40px -20px rgba(0,0,0,.9);
  --nav-h:64px;
  --glow:0 0 0 1px rgba(31,224,160,.35),0 0 24px -6px rgba(31,224,160,.5);
  --bs-body-bg:#0A0C12;
  --bs-body-color:#E9EDF5;
  --bs-primary:#1FE0A0;
  --bs-primary-rgb:31,224,160;
  --bs-border-color:#262C3B;
  --bs-link-color:#1FE0A0;
  --bs-link-hover-color:#5BF0BC;
  --bs-font-sans-serif:system-ui,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out}
a:hover{color:#5BF0BC}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding-left:1.1em}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
.tabular{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(10,12,18,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,224,160,.35),transparent);
  pointer-events:none;
}
.header-inner{display:flex;align-items:center;gap:28px;height:var(--nav-h)}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-1);flex:0 0 auto}
.brand:hover{color:var(--text-1)}
.brand-mark{width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center}
.brand-mark svg{width:30px;height:30px}
.brand-name{font-size:19px;font-weight:800;letter-spacing:-.01em}
.nav-links{display:flex;align-items:center;gap:6px;margin-right:auto}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:var(--nav-h);
  padding:0 14px;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  transition:color .18s ease-out;
}
.nav-link:hover{color:var(--text-1)}
.nav-link.active{color:var(--text-1);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(31,224,160,.7);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:transparent;
  color:var(--text-2);
  cursor:pointer;
  transition:color .18s ease-out,border-color .18s ease-out,background .18s ease-out;
}
.icon-btn:hover{color:var(--text-1);border-color:rgba(31,224,160,.45)}
.menu-toggle{display:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  cursor:pointer;
  transition:background .18s ease-out,border-color .18s ease-out,color .18s ease-out,transform .12s ease-out,box-shadow .18s ease-out;
  --bs-btn-focus-box-shadow:none;
}
.btn:active{transform:scale(.98)}
.btn-brand{
  background:var(--brand);
  color:var(--brand-ink);
  box-shadow:var(--glow);
}
.btn-brand:hover{background:#3DEDB0;color:var(--brand-ink);box-shadow:0 0 0 1px rgba(31,224,160,.45),0 0 28px -4px rgba(31,224,160,.6)}
.btn-ghost{
  background:transparent;
  border-color:var(--line);
  color:var(--text-1);
}
.btn-ghost:hover{border-color:rgba(31,224,160,.6);color:var(--text-1)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-lg{height:48px;padding:0 26px}
.btn-block{width:100%}
.link-more{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--brand)}
.link-more i{transition:transform .18s ease-out}
.link-more:hover i{transform:translateX(2px)}

/* ---------- search panel ---------- */
.search-panel{
  position:absolute;left:0;right:0;top:100%;
  background:var(--bg-panel);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-2);
}
.search-panel[hidden]{display:none}
.search-panel-inner{padding:20px 20px 22px;display:flex;flex-direction:column;gap:14px}
.search-form{display:flex;gap:10px}
.search-form input{
  flex:1 1 auto;min-width:0;height:44px;padding:0 14px;
  background:var(--bg-elevated);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--text-1);
  outline:none;
}
.search-form input::placeholder{color:var(--text-3)}
.search-form input:focus{border-color:rgba(31,224,160,.55);box-shadow:var(--glow)}
.hot-words{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--text-3)}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-chip);
  border:1px solid var(--line);
  background:rgba(31,224,160,.06);
  color:var(--text-2);
  font-size:13px;
  transition:color .18s ease-out,border-color .18s ease-out,background .18s ease-out;
}
.chip:hover{color:var(--brand);border-color:rgba(31,224,160,.45);background:rgba(31,224,160,.12)}

/* ---------- mobile drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,6,10,.66);
  opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;z-index:1040;
}
.drawer-mask.show{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(88vw,360px);
  background:var(--bg-panel);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform .22s ease-out;
  z-index:1050;
  display:flex;flex-direction:column;
}
.drawer.show{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px;padding:0 16px;border-bottom:1px solid var(--line)}
.drawer-head span{font-weight:700}
.drawer-nav{flex:1 1 auto;overflow-y:auto;padding:8px 0}
.drawer-nav a{
  display:flex;align-items:center;height:56px;padding:0 20px;
  color:var(--text-2);font-size:16px;border-bottom:1px solid var(--line-soft);
}
.drawer-nav a.active{color:var(--text-1);font-weight:600;box-shadow:inset 3px 0 0 var(--brand)}
.drawer-foot{padding:16px;border-top:1px solid var(--line)}

/* ---------- reading progress ---------- */
.read-progress{
  position:fixed;top:var(--nav-h);left:0;height:2px;width:0;
  background:var(--brand);
  box-shadow:0 0 12px rgba(31,224,160,.7);
  z-index:1031;
  transition:width .08s linear;
}

/* ---------- article hero ---------- */
.article-hero{
  background-image:linear-gradient(rgba(10,12,18,.9),rgba(10,12,18,.95)),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  padding:26px 0 40px;
}
.breadcrumb-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb-bar a{color:var(--text-3)}
.breadcrumb-bar a:hover{color:var(--brand)}
.breadcrumb-bar .sep{color:var(--line)}
.breadcrumb-bar .current{color:var(--text-1)}
.article-head{max-width:860px}
.article-kicker{font-size:14px;color:var(--text-3);margin-bottom:10px}
.badge-cat{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:var(--r-chip);
  border:1px solid rgba(31,224,160,.35);
  background:rgba(31,224,160,.12);
  color:var(--brand);
  font-size:12px;letter-spacing:.02em;
}
.article-head h1{
  font-size:36px;line-height:1.34;font-weight:800;letter-spacing:-.01em;
  margin:16px 0 18px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:14px;color:var(--text-3);
}
.article-meta .dot{color:var(--line)}

/* ---------- layout ---------- */
.article-layout{
  display:grid;
  grid-template-columns:220px minmax(0,760px);
  gap:48px;
  justify-content:center;
  align-items:start;
  padding:56px 0 72px;
}
.article-side{position:sticky;top:calc(var(--nav-h) + 22px)}
.toc-panel{
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--r-panel);
  padding:18px;
  box-shadow:var(--sh-1);
}
.toc-title{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--text-3);text-transform:uppercase;margin-bottom:12px}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;padding:7px 10px;
  border-left:2px solid transparent;
  color:var(--text-2);font-size:14px;line-height:1.5;
  transition:color .18s ease-out,border-color .18s ease-out,background .18s ease-out;
}
.toc-list a:hover{color:var(--text-1);background:var(--bg-elevated)}
.toc-list a.current{color:var(--brand);border-left-color:var(--brand);background:rgba(31,224,160,.08)}
.toc-empty{font-size:13px;color:var(--text-3)}
.side-cta{
  margin-top:18px;
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--r-panel);
  padding:18px;
}
.side-cta p{font-size:14px;color:var(--text-2);margin:8px 0 14px;line-height:1.7}

/* ---------- article body ---------- */
.article-body{
  max-width:760px;
  font-size:17px;
  line-height:1.9;
  color:var(--text-1);
  overflow-wrap:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;
  font-size:28px;line-height:1.4;font-weight:700;letter-spacing:-.01em;
  margin:2em 0 .8em;
  padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;
  background:var(--brand);border-radius:2px;
}
.article-body h3{font-size:20px;line-height:1.5;font-weight:600;margin:1.7em 0 .7em}
.article-body h4{font-size:17px;font-weight:700;margin:1.5em 0 .6em;color:var(--text-2)}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.35em}
.article-body li{margin:.4em 0;line-height:1.85}
.article-body li::marker{color:var(--brand)}
.article-body blockquote{
  margin:1.6em 0;
  padding:16px 20px;
  background:var(--bg-panel);
  border-left:3px solid var(--brand);
  border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:1.6em auto}
.article-body figure{margin:1.6em 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--text-3);margin-top:10px}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:#5BF0BC}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.92em;
  background:var(--bg-elevated);
  border:1px solid var(--line);
  border-radius:6px;
  padding:1px 6px;
}
.article-body pre{
  background:#0E1119;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:16px 18px;
  overflow-x:auto;
  margin:1.6em 0;
}
.article-body pre code{background:none;border:none;padding:0}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.6em 0;
  font-size:15px;
  font-variant-numeric:tabular-nums;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:10px 14px;
  text-align:left;
}
.article-body th{background:var(--bg-elevated);color:var(--text-1);font-weight:600}
.article-body td{color:var(--text-2)}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2.2em 0}

/* ---------- empty state ---------- */
.empty-state{
  min-height:240px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--r-panel);
  padding:36px 24px;
  text-align:center;
}
.empty-state svg{width:86px;height:56px;opacity:.85}
.empty-state p{color:var(--text-2);font-size:15px;max-width:420px;margin:0}

/* ---------- article foot ---------- */
.article-foot{padding:0 0 88px}
.foot-block{max-width:1020px;margin:0 auto}
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:22px 0;
  border-top:1px solid var(--line);
}
.tag-row .label{font-size:14px;color:var(--text-3);margin-right:4px}
.post-nav{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;
  margin:8px 0 40px;
}
.post-nav a{
  display:flex;flex-direction:column;gap:6px;
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:18px 20px;
  color:var(--text-1);
  transition:border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.post-nav a:hover{border-color:rgba(31,224,160,.45);transform:translateY(-2px);box-shadow:var(--sh-2);color:var(--text-1)}
.post-nav .dir{font-size:13px;color:var(--text-3)}
.post-nav .title{font-size:16px;font-weight:600}
.post-nav .desc{font-size:14px;color:var(--text-2);line-height:1.7}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:18px;
  margin:0 0 22px;
}
.section-head h2{font-size:26px;font-weight:700;letter-spacing:-.01em}
.section-head p{font-size:14px;color:var(--text-3);margin-top:6px}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.card:hover{border-color:rgba(31,224,160,.45);transform:translateY(-2px);box-shadow:var(--sh-2)}
.card-cover{aspect-ratio:16/9;overflow:hidden;background:#171C27}
.card-cover img{width:100%;height:100%;object-fit:cover;border-radius:var(--r-card) var(--r-card) 0 0}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.card-body h3{font-size:17px;font-weight:600;line-height:1.55}
.card-body p{font-size:14.5px;color:var(--text-2);line-height:1.75}
.card-body .link-more{margin-top:auto;font-size:14px}
.grid{display:grid;gap:24px}
.foot-actions{display:flex;justify-content:center;margin-top:34px}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;
  padding:64px 20px 48px;
}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:14.5px;color:var(--text-2);line-height:1.8;max-width:360px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text-1)}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14.5px;color:var(--text-2)}
.footer-col a{color:var(--text-2);font-size:14.5px}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{border-top:1px solid var(--line);padding:18px 0}
.footer-bottom-inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px;color:var(--text-3)}
.footer-bottom-inner a{color:var(--text-3)}
.footer-bottom-inner a:hover{color:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:1 / -1}
}
@media (max-width:991.98px){
  .nav-links{display:none}
  .menu-toggle{display:inline-flex}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;padding:40px 0 56px}
  .article-side{position:static;order:2}
  .toc-panel{display:none}
  .side-cta{margin-top:0}
  .article-head h1{font-size:30px}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .article-foot{padding-bottom:64px}
  .site-footer .footer-grid{padding:56px 20px 40px}
}
@media (max-width:767.98px){
  :root{--nav-h:56px}
  body{font-size:16px}
  .article-hero{padding:20px 0 30px}
  .article-head h1{font-size:28px;line-height:1.36}
  .article-body{font-size:16.5px}
  .article-body h2{font-size:22px}
  .article-body h3{font-size:18px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .post-nav{grid-template-columns:minmax(0,1fr)}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1 / -1}
  .footer-col:last-child{grid-column:1 / -1}
  .btn{height:48px}
  .btn-sm{height:40px}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  .footer-grid{grid-template-columns:1fr;padding:48px 16px 32px}
  .footer-bottom-inner{flex-direction:column}
  .search-form{flex-direction:column}
  .search-form .btn{width:100%}
  .article-meta{gap:8px}
}

/* roulang page: category1 */
:root{
  --bg-base:#0A0C12;
  --bg-panel:#12151E;
  --bg-elevated:#1A1F2C;
  --bg-deep:#07090E;
  --line:#262C3B;
  --line-soft:rgba(255,255,255,.06);
  --text-1:#E9EDF5;
  --text-2:#A3ACBE;
  --text-3:#6E7789;
  --brand:#1FE0A0;
  --brand-strong:#04C58A;
  --accent:#FF6A2B;
  --brand-ink:#06110D;
  --tier-1:#1FE0A0;
  --tier-2:#38CFFF;
  --tier-3:#8A6BFF;
  --tier-4:#FFC24B;
  --r-card:14px;
  --r-panel:16px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(0,0,0,.45);
  --sh-2:0 18px 40px -20px rgba(0,0,0,.9);
  --glow:0 0 0 1px rgba(31,224,160,.35),0 0 24px -6px rgba(31,224,160,.5);
  --s-4:4px;--s-8:8px;--s-12:12px;--s-16:16px;--s-24:24px;--s-32:32px;--s-48:48px;--s-64:64px;--s-96:96px;

  --bs-body-bg:var(--bg-base);
  --bs-body-color:var(--text-1);
  --bs-primary:var(--brand);
  --bs-primary-rgb:31,224,160;
  --bs-border-color:var(--line);
  --bs-link-color:var(--brand);
  --bs-link-hover-color:var(--brand-strong);
  --bs-font-sans-serif:system-ui,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --bs-border-radius:var(--r-card);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-base);color:var(--text-1);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16.5px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--brand-strong)}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;text-align:left}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(10,12,18,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,224,160,.55),transparent);
  pointer-events:none;
}
.header-inner{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);flex:0 0 auto}
.brand:hover{color:var(--text-1)}
.brand-mark{width:30px;height:30px;display:inline-flex}
.brand-mark svg{width:100%;height:100%}
.brand-name{font-weight:800;font-size:18px;letter-spacing:-.01em;white-space:nowrap}

.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1 1 auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:64px;
  padding:0 14px;font-size:15px;font-weight:600;color:var(--text-2);
  transition:color .18s ease-out;
}
.nav-link:hover{color:var(--text-1)}
.nav-link.active{color:var(--text-1)}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;
  box-shadow:0 0 12px rgba(31,224,160,.75);
}

.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);border-radius:var(--r-btn);
  color:var(--text-2);cursor:pointer;transition:border-color .18s ease-out,color .18s ease-out;
}
.icon-btn:hover{border-color:rgba(31,224,160,.45);color:var(--text-1)}
.icon-btn svg{width:18px;height:18px}
.menu-toggle{display:none}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;font-size:15px;font-weight:600;line-height:1;
  border-radius:var(--r-btn);border:1px solid transparent;
  transition:background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out,transform .12s ease-out,box-shadow .18s ease-out;
  cursor:pointer;
}
.btn:active{transform:scale(.98)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-brand{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
.btn-brand:hover{background:#37e8ad;color:var(--brand-ink);box-shadow:var(--glow)}
.btn-outline{background:transparent;border-color:var(--line);color:var(--text-1)}
.btn-outline:hover{border-color:var(--brand);color:var(--text-1)}
.btn-block{width:100%}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
  background:none;border:0;padding:0;
}
.btn-link-arrow span.arrow{transition:transform .18s ease-out;display:inline-block}
.btn-link-arrow:hover span.arrow{transform:translateX(3px)}

/* 搜索面板 */
.search-panel{
  overflow:hidden;max-height:0;border-top:1px solid transparent;
  transition:max-height .22s ease-out,border-color .22s ease-out;
  background:rgba(10,12,18,.96);
}
.search-panel.is-open{max-height:220px;border-top-color:var(--line)}
.search-inner{padding:20px 20px 24px}
.search-form{display:flex;gap:10px;max-width:640px}
.search-form input{
  flex:1 1 auto;height:44px;padding:0 16px;border-radius:var(--r-btn);
  background:var(--bg-elevated);border:1px solid var(--line);color:var(--text-1);font-size:15px;
}
.search-form input::placeholder{color:var(--text-3)}
.search-form input:focus{outline:none;border-color:rgba(31,224,160,.55);box-shadow:0 0 0 3px rgba(31,224,160,.12)}
.search-hot{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:16px}
.search-hot>span{font-size:13px;color:var(--text-3)}

.chip{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  font-size:13px;color:var(--text-2);background:rgba(31,224,160,.08);
  border:1px solid rgba(31,224,160,.22);border-radius:var(--r-pill);
  cursor:pointer;transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out;
}
.chip:hover{color:var(--text-1);border-color:rgba(31,224,160,.5);background:rgba(31,224,160,.14)}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,6,10,.66);z-index:1040;
  opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(88vw,360px);z-index:1050;
  background:var(--bg-panel);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .22s ease-out;
  display:flex;flex-direction:column;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--line)}
.drawer-title{font-size:15px;font-weight:700}
.drawer-nav{flex:1 1 auto;overflow-y:auto;padding:8px 0}
.drawer-nav a{
  display:flex;align-items:center;height:56px;padding:0 20px;
  font-size:15px;font-weight:600;color:var(--text-2);border-bottom:1px solid var(--line-soft);
}
.drawer-nav a.active{color:var(--text-1);box-shadow:inset 3px 0 0 var(--brand);background:rgba(31,224,160,.06)}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}

/* ============ 页面首屏 ============ */
.page-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background-color:var(--bg-deep);
  background-image:linear-gradient(90deg,rgba(10,12,18,.94) 0%,rgba(10,12,18,.82) 55%,rgba(10,12,18,.9) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;top:-160px;left:-120px;width:620px;height:620px;
  background:radial-gradient(circle,rgba(31,224,160,.16) 0%,rgba(31,224,160,0) 68%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;padding-top:64px;padding-bottom:64px}

.breadcrumb-nav{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb-nav a{color:var(--text-3)}
.breadcrumb-nav a:hover{color:var(--text-2)}
.breadcrumb-nav .sep{color:var(--line)}
.breadcrumb-nav .current{color:var(--text-1)}

.badge-cat{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;margin-bottom:18px;
  font-size:12px;font-weight:600;color:var(--brand);
  background:rgba(31,224,160,.12);border:1px solid rgba(31,224,160,.32);border-radius:var(--r-pill);
}
.page-hero h1{font-size:44px;line-height:1.22;font-weight:800;max-width:820px;margin-bottom:16px}
.hero-sub{font-size:17px;color:var(--text-2);max-width:720px;line-height:1.85}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;
  margin-top:36px;padding-top:28px;border-top:1px solid var(--line);
}
.hero-stat .num{
  font-size:28px;font-weight:800;color:var(--brand);
  font-variant-numeric:tabular-nums;
  font-family:"DIN Alternate","Bahnschrift","Arial Narrow",system-ui,sans-serif;
  letter-spacing:-.01em;
}
.hero-stat .label{font-size:14px;color:var(--text-3);margin-top:2px}
.hero-stat.is-accent .num{color:var(--accent)}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section-alt{background:var(--bg-deep);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:28px;line-height:1.35;margin-bottom:12px}
.section-head p{font-size:16px;color:var(--text-2)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.04em;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--brand);display:inline-block}

/* ============ 双栏布局 ============ */
.layout-2col{display:grid;grid-template-columns:264px minmax(0,1fr);gap:32px;align-items:start}
.side-inner{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--r-panel);padding:22px;
}
.side-title{
  font-size:14px;font-weight:700;color:var(--text-1);letter-spacing:.03em;
  padding-bottom:12px;margin-bottom:12px;border-bottom:1px solid var(--line);
}
.anchor-list li+li{margin-top:2px}
.anchor-list a{
  display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:var(--r-btn);
  font-size:14.5px;color:var(--text-2);transition:background-color .18s ease-out,color .18s ease-out;
}
.anchor-list a::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--line);flex:0 0 auto;transition:background-color .18s ease-out}
.anchor-list a:hover{background:var(--bg-elevated);color:var(--text-1)}
.anchor-list a:hover::before{background:var(--brand)}

.mini-tier{display:flex;flex-direction:column;gap:12px}
.mini-tier li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-2);line-height:1.6}
.tier-dot{width:8px;height:8px;border-radius:50%;flex:0 0 auto;margin-top:7px}
.tier-dot.t1{background:var(--tier-1)}
.tier-dot.t2{background:var(--tier-2)}
.tier-dot.t3{background:var(--tier-3)}
.tier-dot.t4{background:var(--tier-4)}
.mini-tier b{color:var(--text-1);font-weight:600}

.side-cta{
  background:linear-gradient(180deg,rgba(31,224,160,.08),rgba(31,224,160,.02));
  border:1px solid rgba(31,224,160,.3);border-radius:var(--r-panel);padding:22px;
  box-shadow:0 0 0 1px rgba(31,224,160,.12),0 0 26px -12px rgba(31,224,160,.5);
}
.side-cta p{font-size:14.5px;color:var(--text-2);margin-bottom:16px}
.side-note{font-size:13px;color:var(--text-3);margin-top:12px;line-height:1.6}

/* ============ 卡片网格 ============ */
.main-col .section-head{margin-bottom:24px}
.main-col .section-head h2{font-size:24px}
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.benefit-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.benefit-card:hover{transform:translateY(-2px);border-color:rgba(31,224,160,.45);box-shadow:var(--sh-2)}
.benefit-media{position:relative;aspect-ratio:16/9;background:#171C27;overflow:hidden}
.benefit-media img{width:100%;height:100%;object-fit:cover}
.benefit-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,18,.05) 40%,rgba(18,21,30,.85) 100%);
}
.benefit-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1 1 auto}
.benefit-body h3{font-size:19px;line-height:1.4;font-weight:600;margin-bottom:10px}
.benefit-body p{font-size:15px;color:var(--text-2);line-height:1.75;margin-bottom:18px}
.benefit-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px}
.benefit-tag{font-size:12px;color:var(--text-3);border:1px solid var(--line);border-radius:var(--r-pill);padding:2px 10px;height:24px;display:inline-flex;align-items:center}

/* ============ 差异速览 ============ */
.diff-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.diff-card{
  background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;position:relative;overflow:hidden;
  transition:transform .2s ease-out,border-color .2s ease-out;
}
.diff-card:hover{transform:translateY(-2px);border-color:rgba(31,224,160,.4)}
.diff-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--brand)}
.diff-card:nth-child(2)::before{background:var(--tier-2)}
.diff-card:nth-child(3)::before{background:var(--accent)}
.diff-card h3{font-size:19px;margin-bottom:10px;font-weight:600}
.diff-card p{font-size:15px;color:var(--text-2);line-height:1.78;margin-bottom:16px}
.diff-nums{display:flex;gap:24px;flex-wrap:wrap;padding-top:14px;border-top:1px solid var(--line-soft)}
.diff-nums div{font-size:13px;color:var(--text-3)}
.diff-nums strong{
  display:block;font-size:22px;font-weight:800;color:var(--text-1);
  font-variant-numeric:tabular-nums;
  font-family:"DIN Alternate","Bahnschrift","Arial Narrow",system-ui,sans-serif;
}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  background:linear-gradient(120deg,rgba(31,224,160,.1),rgba(26,31,44,.6) 60%);
  border:1px solid rgba(31,224,160,.34);border-radius:var(--r-panel);
  padding:40px 40px;box-shadow:0 0 0 1px rgba(31,224,160,.1),0 0 40px -18px rgba(31,224,160,.6);
}
.cta-band h2{font-size:26px;line-height:1.35;margin-bottom:10px}
.cta-band p{font-size:16px;color:var(--text-2);max-width:560px}
.cta-band-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px}
.accordion{--bs-accordion-bg:var(--bg-panel);--bs-accordion-color:var(--text-1);
  --bs-accordion-border-color:var(--line);--bs-accordion-border-radius:var(--r-card);
  --bs-accordion-inner-border-radius:var(--r-card);
  --bs-accordion-btn-bg:var(--bg-panel);--bs-accordion-btn-color:var(--text-1);
  --bs-accordion-active-bg:var(--bg-elevated);--bs-accordion-active-color:var(--text-1);
  --bs-accordion-btn-focus-box-shadow:none;--bs-accordion-btn-padding-x:24px;
  --bs-accordion-btn-padding-y:20px;--bs-accordion-body-padding-x:24px;--bs-accordion-body-padding-y:4px;
}
.accordion-item{background:var(--bg-panel);border:1px solid var(--line);margin-bottom:12px;border-radius:var(--r-card);overflow:hidden}
.accordion-button{
  font-size:16.5px;font-weight:600;line-height:1.8;color:var(--text-1);
  background:var(--bg-panel);box-shadow:none !important;
}
.accordion-button:not(.collapsed){color:var(--brand);background:var(--bg-elevated)}
.accordion-button::after{
  width:14px;height:14px;background-size:14px;
  filter:invert(76%) sepia(38%) saturate(1200%) hue-rotate(110deg) brightness(1.05);
  transition:transform .2s ease-out;
}
.accordion-button:focus{border-color:var(--line);box-shadow:none}
.accordion-body{padding:0 24px 22px;font-size:15.5px;color:var(--text-2);line-height:1.85}
.accordion-item:has(.accordion-button:not(.collapsed)){border-color:rgba(31,224,160,.35)}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-top:64px;padding-bottom:48px;
}
.footer-brand p{font-size:14.5px;color:var(--text-2);margin:16px 0 18px;max-width:340px;line-height:1.8}
.footer-tags{display:flex;gap:8px;flex-wrap:wrap}
.footer-col h4{font-size:15px;font-weight:700;color:var(--text-1);margin-bottom:16px}
.footer-col ul li{font-size:14.5px;color:var(--text-2);margin-bottom:10px;line-height:1.6}
.footer-col a{color:var(--text-2)}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{border-top:1px solid var(--line);padding:18px 0}
.footer-bottom-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer-bottom p{font-size:13px;color:var(--text-3);margin:0}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--text-2)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .page-hero h1{font-size:38px}
}
@media (max-width:991px){
  .nav-links{display:none}
  .menu-toggle{display:inline-flex}
  .layout-2col{grid-template-columns:minmax(0,1fr);gap:32px}
  .side-inner{position:static}
  .section{padding:64px 0}
  .page-hero .container{padding-top:48px;padding-bottom:48px}
  .page-hero h1{font-size:34px}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .diff-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:32px 28px}
}
@media (max-width:767px){
  body{font-size:16px}
  .section{padding:56px 0}
  .page-hero h1{font-size:28px;line-height:1.3}
  .hero-sub{font-size:16px}
  .hero-stat .num{font-size:24px}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .diff-grid{grid-template-columns:minmax(0,1fr)}
  .section-head h2{font-size:23px}
  .cta-band h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-top:48px;padding-bottom:32px}
  .footer-bottom-inner{flex-direction:column;align-items:flex-start}
  .btn{height:48px}
  .btn-sm{height:40px}
  .header-inner{height:56px;gap:12px}
  .brand-name{font-size:16px}
}
@media (max-width:575px){
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .search-form{flex-wrap:wrap}
  .search-form .btn{width:100%}
}

/* roulang page: category2 */
:root{
  --bg-base:#0A0C12;
  --bg-panel:#12151E;
  --bg-elevated:#1A1F2C;
  --bg-deep:#07090E;
  --line:#262C3B;
  --line-soft:rgba(255,255,255,.06);
  --text-1:#E9EDF5;
  --text-2:#A3ACBE;
  --text-3:#6E7789;
  --brand:#1FE0A0;
  --brand-strong:#04C58A;
  --accent:#FF6A2B;
  --brand-ink:#06110D;
  --tier-1:#1FE0A0;
  --tier-2:#38CFFF;
  --tier-3:#8A6BFF;
  --tier-4:#FFC24B;
  --sh-1:0 1px 2px rgba(0,0,0,.45);
  --sh-2:0 18px 40px -20px rgba(0,0,0,.9);
  --glow-brand:0 0 0 1px rgba(31,224,160,.35), 0 0 24px -6px rgba(31,224,160,.5);
  --r-card:14px;
  --r-panel:16px;
  --r-btn:10px;
  --bs-primary:#1FE0A0;
  --bs-primary-rgb:31,224,160;
  --bs-body-bg:#0A0C12;
  --bs-body-color:#E9EDF5;
  --bs-border-color:#262C3B;
  --bs-link-color:#1FE0A0;
  --bs-link-hover-color:#04C58A;
  --bs-emphasis-color:#E9EDF5;
  --bs-secondary-color:#A3ACBE;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0;color:var(--text-1);text-align:left}
p{margin:0 0 1.2em}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out,opacity .18s ease-out}
a:hover{color:var(--brand-strong)}
img{max-width:100%;display:block}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.num{font-variant-numeric:tabular-nums;font-family:"DIN Alternate","Bahnschrift","Arial Narrow",system-ui,sans-serif}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(10,12,18,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,224,160,.3),transparent);
  pointer-events:none;
}
.header-inner{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);font-weight:800;letter-spacing:-.01em}
.brand:hover{color:var(--text-1)}
.brand-mark{width:30px;height:30px;display:inline-flex;flex:0 0 30px}
.brand-mark svg{width:100%;height:100%}
.brand-name{font-size:18px;font-weight:800}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:64px;
  padding:0 14px;font-size:15px;font-weight:600;color:var(--text-2);
  transition:color .18s ease-out;
}
.nav-link:hover{color:var(--text-1)}
.nav-link.active{color:var(--text-1)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;
  box-shadow:0 0 12px rgba(31,224,160,.7);
}
.nav .nav-link{padding:0 14px}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);border-radius:var(--r-btn);
  color:var(--text-2);cursor:pointer;transition:all .18s ease-out;
}
.icon-btn:hover{color:var(--text-1);border-color:rgba(31,224,160,.45)}
.icon-btn svg{width:18px;height:18px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1;
  padding:0 20px;height:44px;border:1px solid transparent;cursor:pointer;
  transition:all .18s ease-out;text-align:center;
}
.btn:active{transform:scale(.98)}
.btn-primary,.btn-primary:focus{
  background:var(--brand);color:var(--brand-ink);border-color:var(--brand);
  box-shadow:var(--glow-brand);--bs-btn-bg:var(--brand);--bs-btn-border-color:var(--brand);
  --bs-btn-color:var(--brand-ink);--bs-btn-hover-bg:#3ee6ac;--bs-btn-hover-border-color:#3ee6ac;
  --bs-btn-hover-color:var(--brand-ink);--bs-btn-active-bg:var(--brand-strong);
  --bs-btn-active-border-color:var(--brand-strong);
}
.btn-primary:hover{background:#3ee6ac;color:var(--brand-ink);box-shadow:0 0 0 1px rgba(31,224,160,.5),0 0 30px -4px rgba(31,224,160,.65)}
.btn-ghost{background:transparent;color:var(--text-1);border-color:var(--line);--bs-btn-bg:transparent;--bs-btn-color:var(--text-1);--bs-btn-border-color:var(--line)}
.btn-ghost:hover{background:transparent;color:var(--text-1);border-color:var(--brand)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand)}
.link-arrow::after{content:"→";transition:transform .18s ease-out}
.link-arrow:hover::after{transform:translateX(2px)}

.search-panel{
  position:absolute;left:0;right:0;top:100%;
  background:var(--bg-panel);border-bottom:1px solid var(--line);
  box-shadow:var(--sh-2);padding:20px 0;
}
.search-panel[hidden]{display:none}
.search-row{display:flex;gap:12px}
.search-row input{
  flex:1;height:46px;padding:0 16px;border-radius:var(--r-btn);
  background:var(--bg-base);border:1px solid var(--line);color:var(--text-1);font-size:15px;
}
.search-row input::placeholder{color:var(--text-3)}
.search-row input:focus{border-color:var(--brand);outline:none;box-shadow:0 0 0 3px rgba(31,224,160,.15)}
.hot-words{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:14px;font-size:14px;color:var(--text-3)}
.chip{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  font-size:13px;color:var(--text-2);background:rgba(31,224,160,.08);
  border:1px solid rgba(31,224,160,.24);transition:all .18s ease-out;
}
.chip:hover{color:var(--text-1);border-color:rgba(31,224,160,.6)}
.menu-btn{display:none}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,6,10,.7);z-index:1040;
  opacity:0;pointer-events:none;transition:opacity .2s ease-out;
}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(88vw,360px);z-index:1050;
  background:var(--bg-panel);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .22s ease-out;
  display:flex;flex-direction:column;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}
.drawer-head .brand-name{font-size:16px}
.drawer nav{flex:1;overflow-y:auto;padding:8px 0}
.drawer nav a{
  display:flex;align-items:center;height:56px;padding:0 20px;
  color:var(--text-2);font-size:16px;font-weight:600;border-bottom:1px solid var(--line-soft);
}
.drawer nav a.active{color:var(--brand);background:rgba(31,224,160,.07);border-left:3px solid var(--brand)}
.drawer-foot{padding:16px 20px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%;height:48px}

/* ---------- share ---------- */
.crumbs{padding:18px 0 0;font-size:14px;color:var(--text-3)}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0}
.crumbs li::after{content:"/";margin-left:8px;color:var(--text-3)}
.crumbs li:last-child::after{display:none}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--text-2)}
.crumbs .current{color:var(--text-1)}

.badge-cat{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--brand);
  background:rgba(31,224,160,.12);border:1px solid rgba(31,224,160,.35);
}
.badge-tier{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:700;
}
.tier-1{color:#08120E;background:var(--tier-1)}
.tier-2{color:#04121A;background:var(--tier-2)}
.tier-3{color:#0B0620;background:var(--tier-3)}
.tier-4{color:#1B1200;background:var(--tier-4)}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;margin-top:22px;border-radius:var(--r-panel);
  border:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(10,12,18,.72),rgba(10,12,18,.94)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.cat-hero::before{
  content:"";position:absolute;top:-140px;right:-80px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(31,224,160,.22),transparent 68%);
  pointer-events:none;
}
.cat-hero-inner{position:relative;padding:56px 48px 52px;max-width:860px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  font-size:13px;font-weight:600;color:var(--brand);
  background:rgba(31,224,160,.1);border:1px solid rgba(31,224,160,.35);
  margin-bottom:20px;
}
.cat-hero h1{font-size:36px;line-height:1.33;font-weight:800;letter-spacing:-.01em;max-width:760px}
.cat-hero .lead{color:var(--text-2);font-size:17px;margin-top:16px;max-width:700px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-stats{display:flex;flex-wrap:wrap;gap:32px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line-soft)}
.hero-stat strong{display:block;font-size:26px;font-weight:800;color:var(--brand)}
.hero-stat span{font-size:13px;color:var(--text-3)}

/* ---------- section ---------- */
.section{padding:88px 0}
.section-tight{padding:0 0 88px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:28px;font-weight:700;letter-spacing:-.01em}
.section-head p{color:var(--text-2);font-size:15px;margin:10px 0 0;max-width:640px}
.eyebrow{font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.14em;text-transform:uppercase;margin-bottom:10px}

/* ---------- filter ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.filter-chip{
  height:36px;padding:0 16px;border-radius:999px;font-size:14px;font-weight:600;
  background:var(--bg-panel);color:var(--text-2);border:1px solid var(--line);
  cursor:pointer;transition:all .18s ease-out;
}
.filter-chip:hover{color:var(--text-1);border-color:rgba(31,224,160,.45)}
.filter-chip.active{
  color:var(--brand-ink);background:var(--brand);border-color:var(--brand);
  box-shadow:0 0 0 1px rgba(31,224,160,.35),0 0 22px -8px rgba(31,224,160,.7);
}

/* ---------- row list ---------- */
.row-list{border:1px solid var(--line);border-radius:var(--r-panel);background:var(--bg-panel);overflow:hidden}
.row-card{
  display:flex;gap:20px;min-height:120px;padding:22px 24px;
  border-bottom:1px solid var(--line);transition:background .18s ease-out;
}
.row-card:last-child{border-bottom:none}
.row-card:hover{background:var(--bg-elevated)}
.row-thumb{
  flex:0 0 200px;width:200px;height:112px;border-radius:12px;overflow:hidden;
  background:#171C27;border:1px solid var(--line-soft);position:relative;
}
.row-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out}
.row-card:hover .row-thumb img{transform:scale(1.03)}
.row-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:8px}
.row-top{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.row-body h3{font-size:19px;font-weight:600;line-height:1.5}
.row-body h3 a{color:var(--text-1)}
.row-body h3 a:hover{color:var(--brand)}
.row-body p{
  margin:0;color:var(--text-2);font-size:15px;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.row-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:auto;font-size:13.5px;color:var(--text-3)}
.row-meta .dot{color:var(--text-3);opacity:.7}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:16px;text-align:center;padding:40px 24px;color:var(--text-3);
}
.empty-state[hidden]{display:none}
.empty-state svg{width:64px;height:64px;opacity:.6}
.empty-state p{margin:0;font-size:15px;max-width:420px;color:var(--text-2)}

/* ---------- pagination ---------- */
.pager{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:32px}
.pager a,.pager span{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;font-size:14px;font-weight:600;
  color:var(--text-2);background:var(--bg-panel);border:1px solid var(--line);
  transition:all .18s ease-out;
}
.pager a:hover{color:var(--text-1);border-color:rgba(31,224,160,.45)}
.pager .current{color:var(--brand-ink);background:var(--brand);border-color:var(--brand);box-shadow:0 0 0 1px rgba(31,224,160,.35),0 0 20px -8px rgba(31,224,160,.8)}
.pager .wide{width:auto;padding:0 16px;gap:6px}

/* ---------- table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-panel);background:var(--bg-panel)}
table.tier-table{width:100%;min-width:760px;border-collapse:collapse}
table.tier-table th,table.tier-table td{
  padding:16px 18px;text-align:left;font-size:15px;border-bottom:1px solid var(--line);
  vertical-align:middle;
}
table.tier-table thead th{
  position:sticky;top:64px;z-index:2;background:var(--bg-elevated);
  font-size:14px;font-weight:700;color:var(--text-2);
}
table.tier-table tbody tr:last-child td{border-bottom:none}
table.tier-table tbody tr:hover{background:rgba(255,255,255,.02)}
table.tier-table td:first-child{color:var(--text-1);font-weight:600}
table.tier-table .col-rec{background:rgba(31,224,160,.05);box-shadow:inset 0 0 0 1px rgba(31,224,160,.28)}
table.tier-table td.yes{color:var(--brand)}
table.tier-table td.no{color:var(--text-3)}
.rec-head{display:inline-flex;align-items:center;gap:8px}
.rec-flag{
  display:inline-flex;align-items:center;height:20px;padding:0 8px;border-radius:999px;
  font-size:11px;font-weight:700;color:var(--brand-ink);background:var(--brand);
}

/* ---------- faq ---------- */
.accordion{--bs-accordion-bg:var(--bg-panel);--bs-accordion-color:var(--text-1);
  --bs-accordion-border-color:var(--line);--bs-accordion-border-radius:14px;
  --bs-accordion-inner-border-radius:14px;--bs-accordion-btn-color:var(--text-1);
  --bs-accordion-btn-bg:var(--bg-panel);--bs-accordion-active-bg:var(--bg-elevated);
  --bs-accordion-active-color:var(--text-1);--bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-btn-icon-width:18px}
.accordion-item{margin-bottom:12px;background:var(--bg-panel);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.accordion-button{
  font-size:16.5px;font-weight:600;line-height:1.8;padding:20px 22px;
  background:var(--bg-panel);color:var(--text-1);box-shadow:none!important;
}
.accordion-button:not(.collapsed){background:var(--bg-elevated);color:var(--brand)}
.accordion-button::after{
  width:18px;height:18px;background-size:18px;
  filter:invert(78%) sepia(32%) saturate(1666%) hue-rotate(102deg) brightness(101%) contrast(96%);
}
.accordion-body{padding:4px 22px 22px;color:var(--text-2);font-size:15.5px;line-height:1.85}

/* ---------- cta ---------- */
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--r-panel);
  border:1px solid rgba(31,224,160,.4);background:var(--bg-panel);
  box-shadow:0 0 0 1px rgba(31,224,160,.18),0 0 42px -18px rgba(31,224,160,.55);
  padding:44px 48px;display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:space-between;
}
.cta-panel::before{
  content:"";position:absolute;top:-120px;right:-60px;width:380px;height:380px;
  background:radial-gradient(circle,rgba(255,106,43,.16),transparent 70%);pointer-events:none;
}
.cta-copy{position:relative;max-width:560px}
.cta-copy h2{font-size:27px;font-weight:700}
.cta-copy p{color:var(--text-2);margin:14px 0 0;font-size:15.5px}
.cta-points{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:8px}
.cta-points li{position:relative;padding-left:22px;color:var(--text-2);font-size:15px}
.cta-points li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 10px rgba(31,224,160,.8);
}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;padding:64px 20px 48px}
.footer-brand p{color:var(--text-2);font-size:14.5px;margin:16px 0 18px;max-width:360px;line-height:1.8}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text-1)}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-col li,.footer-col a{color:var(--text-2);font-size:14.5px}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{border-top:1px solid var(--line);padding:18px 0}
.footer-bottom-inner{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center}
.footer-bottom p{margin:0;font-size:13px;color:var(--text-3)}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--text-2)}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .section{padding:72px 0}
  .section-tight{padding:0 0 72px}
}
@media (max-width:991.98px){
  .nav-links{display:none}
  .menu-btn{display:inline-flex}
  .btn-cta{display:none}
  .cat-hero-inner{padding:44px 32px 42px}
  .cat-hero h1{font-size:31px}
  .section{padding:64px 0}
  .section-tight{padding:0 0 64px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 20px 36px}
  .cta-panel{padding:36px 30px}
  table.tier-table thead th{top:56px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .header-inner{height:56px}
  .nav-link{height:56px}
  .cat-hero h1{font-size:27px}
  .cat-hero-inner{padding:36px 22px 34px}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px}
  .section-head h2{font-size:23px}
  .row-card{flex-direction:column;padding:20px}
  .row-thumb{flex:none;width:100%;height:170px}
  .hero-stats{gap:22px}
  .hero-stat strong{font-size:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta-copy h2{font-size:23px}
}
@media (max-width:575.98px){
  .container{padding:0 16px}
  .cat-hero h1{font-size:24px}
  .btn{width:100%;height:48px}
  .hero-actions .btn{width:100%}
  .cta-actions{width:100%}
  .filter-bar{gap:8px}
  .filter-chip{height:34px;padding:0 14px;font-size:13.5px}
  .row-thumb{height:150px}
  .accordion-button{font-size:15.5px;padding:18px}
}