/* roulang page: index */
/* ========== 设计变量 ========== */
:root{
  --bg:#080D1A;
  --surface:#0D1526;
  --surface-2:#0C1424;
  --primary:#2FE3C9;
  --primary-dim:rgba(47,227,201,.12);
  --secondary:#7C5CFF;
  --secondary-dim:rgba(124,92,255,.12);
  --accent:#C8F04B;
  --accent-dim:rgba(200,240,75,.12);
  --text:#E6EDF7;
  --muted:#93A4C0;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.03));
  --radius-l:22px;
  --radius:18px;
  --radius-s:12px;
  --shadow:0 28px 64px -32px rgba(0,0,0,.85);
  --nav-w:248px;
  --maxw:1200px;
  --ease:cubic-bezier(.4,.15,.2,1);
}

/* ========== 基础重置 ========== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(680px 440px at 10% -8%,rgba(47,227,201,.10),transparent 62%),
    radial-gradient(620px 420px at 94% 6%,rgba(124,92,255,.10),transparent 66%),
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px) 0 0/100% 52px,
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px) 0 0/52px 100%;
}
h1,h2,h3,h4,p,ul,figure{margin:0;padding:0}
ul{list-style:none}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
main{display:block}
strong{font-weight:700}
section[id]{scroll-margin-top:84px}
.button{background:transparent;color:inherit;border:0;margin:0;padding:0;font:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px}

/* ========== 骨架 ========== */
.site-shell{position:relative;z-index:1;min-height:100vh}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 40px}
.content{margin-left:var(--nav-w);min-height:100vh}
body.no-scroll{overflow:hidden}

/* ========== 左侧导航 ========== */
.sidenav{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);z-index:60;
  display:flex;flex-direction:column;gap:26px;
  padding:28px 20px 24px;
  background:linear-gradient(180deg,rgba(13,21,38,.94),rgba(8,13,26,.90));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-right:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  position:relative;flex:0 0 auto;width:34px;height:34px;border-radius:11px;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  box-shadow:0 0 0 1px rgba(47,227,201,.4),0 12px 28px -12px rgba(47,227,201,.85);
}
.brand-mark::after{content:"";position:absolute;inset:9px;border-radius:4px;background:rgba(6,18,26,.85)}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16px;font-weight:900;letter-spacing:.4px}
.brand-text small{font-size:12px;color:var(--muted);letter-spacing:3px}
.nav-list{display:flex;flex-direction:column;gap:6px;margin-top:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:12px 14px;border-radius:12px;color:var(--muted);
  font-size:15px;font-weight:500;
  transition:transform .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.nav-item::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:3px;background:var(--primary);
  box-shadow:0 0 12px rgba(47,227,201,.9);
  transition:height .18s var(--ease);
}
.nav-item:hover{color:var(--text);background:rgba(255,255,255,.045);transform:translateX(4px)}
.nav-item.is-active{color:var(--text);background:var(--glass);box-shadow:inset 0 1px 0 rgba(255,255,255,.08)}
.nav-item.is-active::before{height:20px}
.nav-foot{
  margin-top:auto;display:flex;flex-direction:column;gap:10px;
  padding-top:20px;border-top:1px solid var(--line);
}
.nav-foot p{margin:0;font-size:13px;line-height:1.6;color:var(--muted)}
.nav-foot p b{display:block;color:var(--text);font-weight:700;font-size:13px}
.nav-close{
  display:none;position:absolute;top:14px;right:12px;width:36px;height:36px;
  border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.04);
  color:var(--muted);cursor:pointer;align-items:center;justify-content:center;font-size:15px;
}
.nav-close:hover{color:var(--text);border-color:var(--line-strong)}

/* ========== 移动端顶栏 ========== */
.topbar{display:none}
.overlay{
  position:fixed;inset:0;z-index:80;background:rgba(4,8,16,.72);
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s;
}
.overlay.is-open{opacity:1;visibility:visible}

/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border:0;border-radius:999px;cursor:pointer;
  font-size:15px;font-weight:700;line-height:1;white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),filter .18s var(--ease);
}
.btn-primary{
  color:#06121A;background:linear-gradient(135deg,#4CF0DA,#2FE3C9 55%,#22C7B0);
  box-shadow:0 0 0 1px rgba(47,227,201,.35),0 14px 34px -14px rgba(47,227,201,.6);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,227,201,.45),0 20px 42px -14px rgba(47,227,201,.72)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{color:var(--text);background:transparent;box-shadow:inset 0 0 0 1px rgba(255,255,255,.18)}
.btn-ghost:hover{background:rgba(47,227,201,.08);box-shadow:inset 0 0 0 1px rgba(47,227,201,.45);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:10px 18px;font-size:13px}

/* ========== 徽章 / 标签 ========== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:13px;font-weight:500;line-height:1.5;
}
.badge-lime{color:var(--accent);background:var(--accent-dim);box-shadow:inset 0 0 0 1px rgba(200,240,75,.4)}
.badge-purple{color:var(--secondary);background:var(--secondary-dim);box-shadow:inset 0 0 0 1px rgba(124,92,255,.42)}
.badge-cy{color:var(--primary);background:var(--primary-dim);box-shadow:inset 0 0 0 1px rgba(47,227,201,.4)}
.kicker{display:inline-block;font-size:13px;letter-spacing:2px;color:var(--primary);margin-bottom:10px}

/* ========== 板块 ========== */
.section{margin-top:96px}
.section--tight{margin-top:64px}
.section-head{max-width:720px;margin-bottom:36px}
.section-head h2{font-size:28px;line-height:1.4;font-weight:900;margin:0 0 12px}
.section-head p{margin:0;color:var(--muted);font-size:15px}

/* ========== Hero ========== */
.hero{position:relative;margin-top:36px;border-radius:var(--radius-l);overflow:hidden;isolation:isolate;box-shadow:var(--shadow)}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(100deg,rgba(8,13,26,.95) 0%,rgba(8,13,26,.80) 42%,rgba(8,13,26,.46) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:radial-gradient(560px 320px at 88% 10%,rgba(47,227,201,.16),transparent 70%);
}
.hero-inner{
  max-width:var(--maxw);margin:0 auto;padding:62px 48px;
  display:grid;grid-template-columns:55fr 45fr;gap:40px;align-items:center;
}
.hero-copy h1{
  font-size:40px;line-height:1.32;font-weight:900;letter-spacing:.4px;
  margin:18px 0 14px;
}
.hero-sub{font-size:17px;line-height:1.8;color:#C6D2E4;margin-bottom:28px;max-width:520px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
}
.stat{padding:0 18px;border-left:1px solid var(--line)}
.stat:first-child{padding-left:0;border-left:0}
.stat strong{display:block;font-size:23px;font-weight:900;color:var(--primary);line-height:1.4;font-variant-numeric:tabular-nums}
.stat span{font-size:13px;color:var(--muted);line-height:1.5;display:block}
.hero-visual{position:relative}
.hero-frame{
  position:relative;border-radius:20px;overflow:hidden;
  border:1px solid rgba(255,255,255,.12);background:var(--glass);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.15);
}
.hero-frame img{width:100%;height:340px;object-fit:cover;opacity:.94}
.float-tag{
  position:absolute;padding:8px 14px;border-radius:999px;font-size:13px;font-weight:700;
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.tag-lime{top:16px;left:16px;color:var(--accent);background:rgba(8,13,26,.75);box-shadow:inset 0 0 0 1px rgba(200,240,75,.5)}
.tag-cy{bottom:16px;right:16px;color:var(--primary);background:rgba(8,13,26,.75);box-shadow:inset 0 0 0 1px rgba(47,227,201,.5)}

/* ========== 福利阶梯 ========== */
.ladder{display:grid;grid-template-columns:1.12fr 1.02fr .94fr .86fr;gap:20px;align-items:start}
.ladder-card{
  display:flex;flex-direction:column;gap:12px;padding:26px 24px;
  border-radius:var(--radius);background:var(--glass);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.09);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.12);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.ladder-card:nth-child(1){min-height:240px}
.ladder-card:nth-child(2){min-height:288px}
.ladder-card:nth-child(3){min-height:336px}
.ladder-card:nth-child(4){min-height:384px}
.ladder-card:hover{transform:translateY(-4px);border-color:rgba(47,227,201,.35)}
.ladder-card.is-reco{
  border-color:rgba(200,240,75,.45);
  box-shadow:0 0 0 1px rgba(200,240,75,.22),0 26px 60px -30px rgba(200,240,75,.4),inset 0 1px 0 rgba(255,255,255,.14);
}
.ladder-no{
  font-size:38px;font-weight:900;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(47,227,201,.78);
  font-variant-numeric:tabular-nums;letter-spacing:1px;
}
.ladder-card h3{font-size:18px;font-weight:700;line-height:1.5}
.ladder-card ul{display:flex;flex-direction:column;gap:8px;margin-top:4px}
.ladder-card li{position:relative;padding-left:18px;font-size:14px;line-height:1.75;color:var(--muted)}
.ladder-card li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;
  background:var(--primary);opacity:.85;
}
.ladder-tag{margin-top:auto;padding-top:12px;font-size:15px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums}

/* ========== 权益对比表 ========== */
.table-wrap{
  overflow-x:auto;border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.015));
  box-shadow:var(--shadow);
}
.compare-table{width:100%;min-width:720px;border-collapse:collapse}
.compare-table caption{text-align:left;padding:22px 26px 4px;font-size:13px;color:var(--muted)}
.compare-table th,.compare-table td{
  padding:0 24px;height:56px;text-align:left;font-size:15px;vertical-align:middle;
  border-bottom:1px solid var(--line);
}
.compare-table thead th{
  height:64px;font-weight:700;color:var(--text);background:rgba(255,255,255,.035);
}
.compare-table tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.compare-table tbody tr:hover{background:rgba(47,227,201,.05)}
.compare-table tbody tr:last-child td{border-bottom:0}
.compare-table th:first-child,.compare-table td:first-child{
  position:sticky;left:0;z-index:2;min-width:168px;
  background:var(--surface-2);color:var(--muted);font-weight:500;
  box-shadow:1px 0 0 var(--line);
}
.compare-table thead th:first-child{background:#0F1A2C;color:var(--text)}
.compare-table th:last-child,.compare-table td:last-child{background:rgba(200,240,75,.045);color:var(--text)}
.compare-table td:last-child{font-weight:700;color:var(--accent)}
.col-reco{display:flex;align-items:center;gap:10px}
.plain{color:var(--muted);font-weight:400}

/* ========== 限时入口 ========== */
.flash{
  position:relative;display:flex;align-items:center;gap:28px;flex-wrap:wrap;
  padding:22px 30px;border-radius:var(--radius);
  background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.09);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.12);
  min-height:96px;
}
.flash::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;border-radius:0 0 var(--radius) var(--radius);
  background:linear-gradient(90deg,transparent,rgba(47,227,201,.85),rgba(200,240,75,.9),transparent);
}
.flash-copy{flex:1 1 320px;min-width:0}
.flash-copy h2{font-size:22px;font-weight:900;line-height:1.5;margin:8px 0 6px}
.flash-copy p{margin:0;font-size:14px;color:var(--muted)}
.countdown{display:flex;gap:10px;align-items:center}
.cd-box{
  min-width:66px;padding:8px 6px;text-align:center;border-radius:12px;
  background:rgba(200,240,75,.07);
  box-shadow:inset 0 0 0 1px rgba(200,240,75,.28);
}
.cd-box span{display:block;font-size:25px;font-weight:900;line-height:1.25;color:var(--accent);font-variant-numeric:tabular-nums}
.cd-box small{font-size:12px;color:var(--muted)}
.cd-flash{animation:cdpulse .12s linear}
@keyframes cdpulse{
  from{box-shadow:inset 0 0 0 1px rgba(200,240,75,.95),0 0 18px rgba(200,240,75,.35)}
  to{box-shadow:inset 0 0 0 1px rgba(200,240,75,.28)}
}

/* ========== 最新信息列表 ========== */
.news-list{display:flex;flex-direction:column;gap:16px}
.news-item{
  display:grid;grid-template-columns:158px minmax(0,1fr) 96px;gap:24px;align-items:center;
  padding:20px 24px;border-radius:var(--radius);
  background:var(--glass);border:1px solid rgba(255,255,255,.09);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.1);
  transition:transform .18s var(--ease),border-color .18s var(--ease);
}
.news-item:hover{transform:translateY(-2px);border-color:rgba(47,227,201,.4)}
.news-side{display:flex;flex-direction:column;align-items:flex-start;gap:8px}
.news-date{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.news-title{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:6px}
.news-title a{transition:color .18s var(--ease)}
.news-item:hover .news-title a{color:var(--primary)}
.news-excerpt{
  margin:0;font-size:14px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-thumb{width:96px;height:72px;border-radius:10px;object-fit:cover;border:1px solid var(--line)}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:60px 24px;border-radius:var(--radius);text-align:center;
  background:var(--glass);border:1px dashed rgba(255,255,255,.18);
}
.empty-icon{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  font-size:20px;color:var(--primary);background:var(--primary-dim);
  box-shadow:inset 0 0 0 1px rgba(47,227,201,.35);
}
.empty-state p{margin:0;font-size:15px;color:var(--muted)}

/* ========== 咨询表单 ========== */
.consult-card{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:36px;
  padding:40px;border-radius:var(--radius-l);
  background:linear-gradient(150deg,rgba(47,227,201,.09),rgba(124,92,255,.07) 45%,rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.1);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.14);
}
.consult-intro h2{font-size:26px;line-height:1.45;font-weight:900;margin:0 0 12px}
.consult-intro>p{margin-bottom:22px;font-size:15px;color:var(--muted)}
.check-list{display:flex;flex-direction:column;gap:12px}
.check-list li{position:relative;padding-left:26px;font-size:15px;line-height:1.7;color:#C6D2E4}
.check-list li::before{
  content:"";position:absolute;left:0;top:6px;width:15px;height:15px;border-radius:50%;
  background:var(--primary-dim);box-shadow:inset 0 0 0 1px rgba(47,227,201,.6);
}
.check-list li::after{
  content:"";position:absolute;left:4px;top:10px;width:6px;height:3px;
  border-left:1.5px solid var(--primary);border-bottom:1.5px solid var(--primary);
  transform:rotate(-45deg);
}
.consult-form{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px;min-width:0}
.field--full{grid-column:1/-1}
.field label{font-size:13px;color:var(--muted)}
.field input,.field select,.field textarea{
  width:100%;padding:13px 16px;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--text);font-size:15px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.field textarea{min-height:110px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:rgba(147,164,192,.7)}
.field select{appearance:none;-webkit-appearance:none;
  background-color:rgba(255,255,255,.04);
  background-image:linear-gradient(45deg,transparent 50%,#93A4C0 50%),linear-gradient(135deg,#93A4C0 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;
  background-size:6px 6px,6px 6px;background-repeat:no-repeat;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(47,227,201,.16);background-color:rgba(47,227,201,.05);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:#FF6B6B;box-shadow:0 0 0 3px rgba(255,107,107,.14)}
.field .err{display:none;font-size:12px;color:#FF8F8F}
.field.has-error .err{display:block}
.form-actions{grid-column:1/-1;display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:4px}
.form-note{font-size:13px;color:var(--muted)}
.form-tip{grid-column:1/-1;display:none;font-size:14px;color:var(--primary);line-height:1.7}
.form-tip.is-on{display:block}
.form-tip.err-tip{color:#FF8F8F}

/* ========== FAQ ========== */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:880px}
.faq-item{
  border-radius:var(--radius);overflow:hidden;
  background:var(--glass);border:1px solid rgba(255,255,255,.09);
  transition:border-color .2s var(--ease);
}
.faq-item.is-open{border-color:rgba(47,227,201,.42)}
.faq-q{margin:0;font-size:16px;font-weight:700}
.faq-q button{
  width:100%;display:flex;align-items:center;gap:16px;
  padding:20px 24px;background:transparent;border:0;cursor:pointer;
  text-align:left;font-size:16px;font-weight:700;line-height:1.6;color:var(--text);
  transition:color .18s var(--ease);
}
.faq-q button:hover{color:var(--primary)}
.faq-num{
  flex:0 0 auto;padding-left:14px;border-left:2px solid var(--primary);
  font-size:13px;font-weight:900;color:var(--primary);line-height:1.5;
  font-variant-numeric:tabular-nums;
}
.faq-ico{
  margin-left:auto;flex:0 0 auto;width:22px;height:22px;
  display:grid;place-items:center;font-size:14px;color:var(--muted);
  transition:transform .2s var(--ease),color .2s var(--ease);
}
.faq-item.is-open .faq-ico{transform:rotate(180deg);color:var(--primary)}
.faq-a{padding:0 24px 22px 62px;font-size:15px;line-height:1.75;color:var(--muted);max-width:720px}
.faq-a[hidden]{display:none}

/* ========== 页脚 ========== */
.site-footer{position:relative;margin-top:96px;padding:56px 0 28px;border-top:1px solid var(--line)}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,227,201,.7),rgba(124,92,255,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr 1.1fr;gap:32px}
.footer-col{min-width:0}
.footer-col+.footer-col{border-left:1px solid var(--line);padding-left:32px}
.footer-col h3{font-size:14px;font-weight:700;letter-spacing:1px;margin-bottom:16px}
.footer-col p{font-size:14px;line-height:1.85;color:var(--muted);margin-bottom:12px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;line-height:1.7;color:var(--muted)}
.footer-col a{color:var(--muted);display:inline-block;transition:color .18s var(--ease),transform .18s var(--ease)}
.footer-col a:hover{color:var(--primary);transform:translateX(3px)}
.footer-brandline{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brandline .brand-mark{width:28px;height:28px;border-radius:9px}
.footer-brandline .brand-mark::after{inset:8px;border-radius:3px}
.footer-brandline strong{font-size:16px;font-weight:900}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;line-height:1.8;color:var(--muted);
}
.footer-bottom a{color:var(--primary)}

/* ========== 响应式 ========== */
@media (min-width:1024px) and (max-width:1439px){
  :root{--maxw:1080px}
  .hero-inner{padding:52px 40px}
  .ladder{gap:16px}
  .consult-card{padding:34px;gap:28px}
}

@media (max-width:1023px){
  .topbar{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    position:fixed;top:0;left:0;right:0;height:56px;padding:0 14px;z-index:70;
    background:rgba(8,13,26,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
  }
  .hamburger{
    width:40px;height:40px;flex:0 0 auto;display:grid;place-items:center;
    border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.05);cursor:pointer;
  }
  .hamburger i{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);position:relative}
  .hamburger i::before,.hamburger i::after{
    content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--text);
  }
  .hamburger i::before{top:-6px}
  .hamburger i::after{top:6px}
  .topbar-brand{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:900;letter-spacing:.3px}
  .topbar-brand .brand-mark{width:24px;height:24px;border-radius:8px}
  .topbar-brand .brand-mark::after{inset:7px;border-radius:3px}

  .sidenav{
    width:78vw;max-width:320px;z-index:90;
    transform:translateX(-104%);
    transition:transform .28s var(--ease);
    padding-top:24px;
  }
  .sidenav.is-open{transform:translateX(0)}
  .nav-close{display:flex}
  .content{margin-left:0;padding-top:56px}
  .container{padding:0 20px}

  .hero{margin-top:20px}
  .hero-inner{grid-template-columns:minmax(0,1fr);padding:38px 24px;gap:28px}
  .hero-copy h1{font-size:30px;line-height:1.38}
  .hero-sub{font-size:15px}
  .hero-frame img{height:240px}
  .hero-stats{margin-top:30px;padding-top:18px}
  .stat strong{font-size:19px}

  .section{margin-top:64px}
  .section--tight{margin-top:48px}
  .section-head{margin-bottom:26px}
  .section-head h2{font-size:23px}

  .ladder{grid-template-columns:minmax(0,1fr)}
  .ladder .ladder-card{min-height:auto}

  .news-item{grid-template-columns:120px minmax(0,1fr) 88px;gap:16px;padding:18px}
  .news-thumb{width:88px;height:66px}
  .news-title{font-size:16px}

  .consult-card{grid-template-columns:minmax(0,1fr);padding:26px;gap:26px}
  .consult-intro h2{font-size:22px}

  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-col+.footer-col{border-left:0;padding-left:0}
  .footer-col:nth-child(even){border-left:1px solid var(--line);padding-left:26px}
  .site-footer{padding-top:44px}
}

@media (max-width:767px){
  .hero-copy h1{font-size:27px}
  .hero-cta .btn{flex:1 1 auto}
  .hero-stats{grid-template-columns:minmax(0,1fr);gap:0}
  .stat{padding:12px 0;border-left:0;border-top:1px solid var(--line)}
  .stat:first-child{border-top:0;padding-top:0}
  .flash{flex-direction:column;align-items:flex-start;gap:18px;padding:20px}
  .flash-copy h2{font-size:19px}
  .news-item{grid-template-columns:minmax(0,1fr);gap:14px}
  .news-side{flex-direction:row;align-items:center;gap:12px}
  .news-thumb{width:100%;height:160px}
  .consult-form{grid-template-columns:minmax(0,1fr)}
  .faq-q button{padding:18px 18px;font-size:15px}
  .faq-a{padding:0 18px 20px 54px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-col:nth-child(even){border-left:0;padding-left:0}
  .footer-bottom{flex-direction:column;gap:8px}
}

@media (max-width:520px){
  .container{padding:0 16px}
  .hero-inner{padding:30px 18px}
  .hero-copy h1{font-size:25px;line-height:1.4}
  .hero-frame img{height:200px}
  .cd-box{min-width:56px}
  .cd-box span{font-size:21px}
  .flash .btn{width:100%}
  .countdown{width:100%;justify-content:space-between}
}

/* roulang page: article */
:root{
  --bg:#080D1A;
  --bg-2:#0D1526;
  --cyan:#2FE3C9;
  --cyan-soft:rgba(47,227,201,.12);
  --purple:#7C5CFF;
  --purple-soft:rgba(124,92,255,.12);
  --lime:#C8F04B;
  --lime-soft:rgba(200,240,75,.12);
  --text:#E6EDF7;
  --text-dim:#93A4C0;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.03));
  --radius:18px;
  --radius-sm:12px;
  --radius-xs:10px;
  --shadow:0 28px 64px -32px rgba(0,0,0,.85);
  --nav-w:248px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 460px at 10% -6%,rgba(47,227,201,.10),transparent 62%),
    radial-gradient(760px 520px at 98% 4%,rgba(124,92,255,.10),transparent 60%),
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px) 0 0/64px 64px,
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px) 0 0/64px 64px;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
::selection{background:rgba(47,227,201,.28);color:#fff}

/* ---------- 布局骨架 ---------- */
.layout{display:flex;align-items:flex-start;min-height:100vh;position:relative;z-index:1}
.main-area{
  flex:1 1 auto;
  min-width:0;
  display:flex;
  flex-direction:column;
  min-height:100vh;
}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.page{flex:1 1 auto;padding:44px 0 88px}

/* ---------- 左侧导航 ---------- */
.sidebar{
  position:sticky;
  top:0;
  flex:0 0 var(--nav-w);
  width:var(--nav-w);
  height:100vh;
  background:linear-gradient(180deg,rgba(13,21,38,.94),rgba(8,13,26,.88));
  border-right:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  z-index:60;
}
.sidebar-inner{display:flex;flex-direction:column;height:100%;padding:26px 18px 22px;gap:20px;overflow-y:auto}
.brand{display:flex;align-items:center;gap:12px;padding:4px 6px 18px;border-bottom:1px solid var(--line)}
.brand-mark{
  width:14px;height:14px;border-radius:4px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--cyan),var(--purple));
  box-shadow:0 0 16px rgba(47,227,201,.8);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:17px;font-weight:900;letter-spacing:.4px}
.brand-text em{font-style:normal;font-size:12px;color:var(--text-dim);letter-spacing:4px;margin-top:2px}
.nav-list{display:flex;flex-direction:column;gap:6px}
.nav-item{
  position:relative;
  display:block;
  padding:12px 14px 12px 18px;
  border-radius:12px;
  color:var(--text-dim);
  font-size:15px;
  font-weight:500;
  transition:transform .18s ease,color .18s ease,background .18s ease;
}
.nav-item::before{
  content:"";
  position:absolute;left:0;top:50%;
  width:3px;height:22px;border-radius:2px;
  background:var(--cyan);
  box-shadow:0 0 12px rgba(47,227,201,.9);
  transform:translateY(-50%) scaleY(0);
  transition:transform .18s ease;
}
.nav-item:hover{color:var(--text);background:rgba(255,255,255,.045);transform:translateX(4px)}
.nav-item.is-active{
  color:#fff;
  background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.03));
  border:1px solid var(--line);
}
.nav-item.is-active::before{transform:translateY(-50%) scaleY(1)}
.sidebar-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px;padding-top:20px;border-top:1px solid var(--line)}
.side-contact{font-size:12.5px;line-height:1.7;color:var(--text-dim)}

/* ---------- 移动端顶栏 ---------- */
.topbar{display:none}
.menu-toggle{
  width:38px;height:38px;border-radius:11px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  cursor:pointer;transition:background .18s ease,border-color .18s ease;
}
.menu-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--text)}
.menu-toggle:hover{background:rgba(47,227,201,.12);border-color:rgba(47,227,201,.4)}
.topbar-brand{display:flex;align-items:center;gap:9px;font-size:15px;font-weight:700;letter-spacing:.3px}
.topbar-brand .brand-mark{width:12px;height:12px;border-radius:4px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,8,16,.72);
  z-index:55;opacity:0;pointer-events:none;transition:opacity .25s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;line-height:1;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease,filter .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#2FE3C9,#63F0DC);
  color:#06121A;
  box-shadow:0 0 0 1px rgba(47,227,201,.35),0 14px 34px -14px rgba(47,227,201,.6);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,227,201,.4),0 20px 40px -14px rgba(47,227,201,.66)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{
  background:transparent;color:var(--text);border-color:var(--line-strong);
}
.btn-ghost:hover{background:rgba(47,227,201,.08);border-color:rgba(47,227,201,.45);color:#fff;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:10px 18px;font-size:13.5px}
.btn-xs{padding:8px 14px;font-size:13px}
.button{
  border-radius:999px;font-weight:700;font-family:inherit;
  background:linear-gradient(135deg,#2FE3C9,#63F0DC);color:#06121A;border:0;
  box-shadow:0 0 0 1px rgba(47,227,201,.35),0 14px 34px -14px rgba(47,227,201,.6);
}
.button:hover,.button:focus{background:linear-gradient(135deg,#3EEBD3,#78F5E2);color:#06121A}

/* ---------- 面包屑 ---------- */
.breadcrumb{margin-bottom:22px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-dim)}
.breadcrumb li{display:flex;align-items:center;gap:8px;max-width:100%}
.breadcrumb li + li::before{content:"/";color:rgba(255,255,255,.22)}
.breadcrumb a{color:var(--text-dim);transition:color .18s ease}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb .is-current{color:var(--text);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:min(60vw,520px)}
.breadcrumb .crumb-now{color:var(--purple)}

/* ---------- 文章头部 ---------- */
.article-shell{max-width:860px;margin:0 auto}
.article-head{
  padding:28px 32px 30px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid rgba(255,255,255,.09);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  margin-bottom:34px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:16px}
.meta-item{font-size:13px;color:var(--text-dim);font-variant-numeric:tabular-nums}
.meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.22)}
.article-head h1{
  font-size:34px;
  line-height:1.42;
  font-weight:900;
  letter-spacing:.2px;
  color:#fff;
  word-break:break-word;
}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1.5;
  background:var(--cyan-soft);color:var(--cyan);
  border:1px solid rgba(47,227,201,.4);
}
.badge-cat{background:var(--purple-soft);color:#B9A8FF;border-color:rgba(124,92,255,.42)}
.badge-promo{background:var(--lime-soft);color:var(--lime);border-color:rgba(200,240,75,.4)}

/* ---------- 正文排版 ---------- */
.article-wrap{
  padding:36px 40px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid rgba(255,255,255,.09);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.article-body{max-width:760px;font-size:16px;line-height:1.9;color:#DCE6F6}
.article-body p{margin:0 0 20px}
.article-body h2{
  font-size:24px;line-height:1.6;font-weight:800;color:#fff;
  margin:42px 0 16px;padding-left:14px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:20px;border-radius:2px;
  background:linear-gradient(180deg,var(--cyan),var(--purple));
  box-shadow:0 0 12px rgba(47,227,201,.6);
}
.article-body h3{font-size:19px;line-height:1.65;font-weight:700;color:#fff;margin:32px 0 12px}
.article-body h4{font-size:16.5px;font-weight:700;color:var(--cyan);margin:26px 0 10px}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:24px}
.article-body ul li{position:relative;margin:9px 0;list-style:none}
.article-body ul li::before{
  content:"";position:absolute;left:-16px;top:13px;width:6px;height:6px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 8px rgba(47,227,201,.8);
}
.article-body ol{list-style:decimal}
.article-body ol li{margin:9px 0}
.article-body ol li::marker{color:var(--cyan);font-weight:700}
.article-body strong{color:#fff;font-weight:700}
.article-body blockquote{
  margin:24px 0;padding:18px 24px;border-radius:0 14px 14px 0;
  border-left:3px solid var(--cyan);
  background:rgba(47,227,201,.07);
  color:#C6D6EE;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:20px 0;border:1px solid var(--line)}
.article-body a{color:var(--cyan);border-bottom:1px solid rgba(47,227,201,.4);transition:border-color .18s ease}
.article-body a:hover{border-color:var(--cyan)}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{color:#fff;background:rgba(255,255,255,.04);font-weight:700}
.article-body tr:nth-child(even) td{background:rgba(255,255,255,.02)}
.article-body code{
  background:rgba(255,255,255,.07);border:1px solid var(--line);
  border-radius:6px;padding:2px 7px;font-size:14px;color:#A8F0E2;
}
.article-body hr{border:0;height:1px;margin:32px 0;background:linear-gradient(90deg,transparent,rgba(47,227,201,.4),transparent)}

/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;padding:40px 20px;
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.empty-icon{
  width:56px;height:56px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:24px;font-weight:900;color:var(--cyan);
  background:rgba(47,227,201,.1);border:1px solid rgba(47,227,201,.35);
}
.empty-state h2{font-size:22px;font-weight:800;color:#fff}
.empty-state p{font-size:14.5px;color:var(--text-dim);max-width:440px;margin:0}

/* ---------- 操作条 ---------- */
.article-actions{
  margin-top:28px;padding:20px 26px;
  border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.09);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.07);
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
}
.action-tip{font-size:13.5px;color:var(--text-dim);margin-right:auto}

/* ---------- 相关推荐 ---------- */
.related{margin-top:64px}
.section-title{
  font-size:24px;font-weight:800;color:#fff;margin-bottom:8px;
}
.section-sub{font-size:14px;color:var(--text-dim);margin-bottom:24px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{
  display:flex;flex-direction:column;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--glass);
  border:1px solid rgba(255,255,255,.09);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.07);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.related-card:hover{transform:translateY(-4px);border-color:rgba(47,227,201,.45);box-shadow:0 32px 70px -34px rgba(0,0,0,.9)}
.related-card img{width:100%;height:148px;object-fit:cover;border-radius:0}
.related-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:8px}
.related-body h3{font-size:17px;line-height:1.6;font-weight:700;color:#fff}
.related-body p{font-size:14px;line-height:1.7;color:var(--text-dim)}
.related-tag{font-size:12.5px;color:var(--cyan);font-weight:600}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  border-top:1px solid var(--line);
  padding:58px 0 30px;
  background:linear-gradient(180deg,rgba(13,21,38,.5),rgba(8,13,26,.9));
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,227,201,.7),rgba(124,92,255,.6),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:0;
}
.footer-col{padding:0 26px;border-right:1px solid var(--line)}
.footer-col:first-child{padding-left:0}
.footer-col:last-child{border-right:0;padding-right:0}
.footer-brandline{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brandline strong{font-size:16.5px;font-weight:900;color:#fff;letter-spacing:.3px}
.site-footer p{font-size:14px;line-height:1.85;color:var(--text-dim);margin-bottom:8px}
.site-footer h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.5px}
.site-footer ul{display:flex;flex-direction:column;gap:9px}
.site-footer ul li{font-size:14px;color:var(--text-dim)}
.site-footer ul a{color:var(--text-dim);transition:color .18s ease,transform .18s ease;display:inline-block}
.site-footer ul a:hover{color:var(--cyan);transform:translateX(3px)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
}
.footer-bottom p{font-size:13px;margin:0;color:rgba(147,164,192,.85)}

/* ---------- 响应式 ---------- */
@media (max-width:1439px) and (min-width:1024px){
  .container{max-width:1080px}
}
@media (max-width:1200px){
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;row-gap:32px}
  .footer-col{padding:0 20px}
  .footer-col:nth-child(2){border-right:0;padding-right:0}
  .footer-col:nth-child(3){padding-left:0}
}
@media (max-width:1023px){
  .topbar{
    display:flex;align-items:center;gap:12px;
    position:fixed;top:0;left:0;right:0;height:56px;
    padding:0 14px;z-index:70;
    background:rgba(8,13,26,.92);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .topbar-brand{margin-right:auto}
  .sidebar{
    position:fixed;left:0;top:0;
    height:100vh;
    width:78vw;max-width:320px;
    transform:translateX(-104%);
    transition:transform .28s ease;
    z-index:80;
  }
  .sidebar.is-open{transform:translateX(0)}
  .main-area{padding-top:56px}
  .container{padding:0 24px}
  .page{padding:32px 0 72px}
  .article-head{padding:24px 22px}
  .article-head h1{font-size:28px;line-height:1.45}
  .article-wrap{padding:26px 22px}
  .article-actions{padding:18px 20px}
  .article-actions .btn{flex:1 1 auto}
  .action-tip{flex:1 1 100%;margin:0 0 4px}
  .breadcrumb .is-current{max-width:70vw}
}
@media (max-width:768px){
  .related-grid{grid-template-columns:1fr;gap:18px}
  .footer-grid{grid-template-columns:1fr;row-gap:28px}
  .footer-col{padding:0;border-right:0;border-bottom:1px solid var(--line);padding-bottom:24px}
  .footer-col:last-child{border-bottom:0;padding-bottom:0}
  .section-title{font-size:21px}
  .article-body h2{font-size:21px;margin-top:34px}
  .article-body h3{font-size:18px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .article-head h1{font-size:24px}
  .article-head{padding:20px 18px;border-radius:16px}
  .article-wrap{padding:22px 18px;border-radius:16px}
  .article-body{font-size:15.5px}
  .btn{padding:11px 20px;font-size:14px}
  .empty-state{padding:28px 12px}
}

/* roulang page: category1 */
:root{
  --bg:#080D1A;
  --bg-2:#0D1526;
  --primary:#2FE3C9;
  --accent:#7C5CFF;
  --promo:#C8F04B;
  --text:#E6EDF7;
  --muted:#93A4C0;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --glass:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.03));
  --glass-2:linear-gradient(160deg, rgba(255,255,255,.05), rgba(255,255,255,.015));
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 28px 64px -32px rgba(0,0,0,.85);
  --nav-w:248px;
  --ease:180ms cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 520px at 12% -6%, rgba(47,227,201,.10), transparent 62%),
    radial-gradient(760px 480px at 92% 8%, rgba(124,92,255,.10), transparent 60%),
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
  background-attachment:fixed;
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.32}
p{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.num{font-variant-numeric:tabular-nums}

/* ============ 侧边导航 ============ */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--nav-w);
  z-index:60;
  display:flex;
  flex-direction:column;
  padding:26px 20px 24px;
  background:linear-gradient(180deg, rgba(13,21,38,.92), rgba(8,13,26,.86));
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-right:1px solid var(--line);
}
.brand{
  display:flex;align-items:center;gap:10px;
  padding:6px 8px 22px;
  border-bottom:1px solid var(--line);
}
.brand-mark{
  width:26px;height:26px;border-radius:9px;flex:0 0 26px;
  background:conic-gradient(from 210deg, #2FE3C9, #7C5CFF 55%, #2FE3C9);
  box-shadow:0 0 18px rgba(47,227,201,.55);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:7px;border-radius:4px;background:#080D1A;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.2px}
.brand-text span{font-size:12px;color:var(--muted);letter-spacing:.6px}
.nav-list{margin-top:22px;display:flex;flex-direction:column;gap:6px}
.nav-item{
  position:relative;
  display:flex;align-items:center;
  padding:12px 14px;
  border-radius:12px;
  color:var(--muted);
  font-size:15px;font-weight:500;
  transition:transform var(--ease), color var(--ease), background var(--ease);
}
.nav-item::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:3px;background:var(--primary);
  box-shadow:0 0 12px rgba(47,227,201,.9);
  transition:height var(--ease);
}
.nav-item:hover{
  color:var(--text);
  background:rgba(255,255,255,.04);
  transform:translateX(4px);
}
.nav-item.is-active{
  color:var(--text);
  background:var(--glass);
  border:1px solid var(--line);
  font-weight:700;
}
.nav-item.is-active::before{height:20px}
.side-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line)}
.side-foot .btn{width:100%;justify-content:center;margin-bottom:14px}
.side-meta{font-size:13px;color:var(--muted);line-height:1.7}
.side-meta strong{display:block;color:var(--text);font-weight:500;font-size:13px}

/* ============ 移动端顶栏与抽屉 ============ */
.mobile-bar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:56px;z-index:80;
  align-items:center;justify-content:space-between;
  padding:0 14px;
  background:rgba(8,13,26,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.burger{
  width:40px;height:40px;border-radius:12px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  cursor:pointer;
}
.burger span{display:block;width:16px;height:2px;border-radius:2px;background:var(--text)}
.mobile-brand{
  display:flex;align-items:center;gap:8px;font-weight:700;font-size:15px;
}
.mobile-brand .brand-mark{width:22px;height:22px;flex:0 0 22px}
.drawer-overlay{
  position:fixed;inset:0;z-index:88;
  background:rgba(4,8,16,.72);
  opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);
}
.drawer-overlay.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;left:0;bottom:0;z-index:90;
  width:78vw;max-width:320px;
  padding:22px 18px;
  display:flex;flex-direction:column;
  background:linear-gradient(180deg, rgba(13,21,38,.98), rgba(8,13,26,.98));
  border-right:1px solid var(--line);
  transform:translateX(-102%);
  transition:transform 220ms cubic-bezier(.4,0,.2,1);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer .nav-list{margin-top:18px}
.drawer .side-foot{margin-top:24px}

/* ============ 主区域 ============ */
.page{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{font-size:28px;margin-bottom:14px}
.section-head p{color:var(--muted);font-size:15px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1.4px;color:var(--primary);
  text-transform:uppercase;margin-bottom:14px;font-weight:500;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(47,227,201,.8)}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:13px;font-weight:500;line-height:1.6;
  background:rgba(47,227,201,.12);color:var(--primary);
  border:1px solid rgba(47,227,201,.4);
}
.badge--promo{background:rgba(200,240,75,.12);color:var(--promo);border-color:rgba(200,240,75,.4)}
.badge--cat{background:rgba(124,92,255,.12);color:#A899FF;border-color:rgba(124,92,255,.4)}
.badge--ghost{background:rgba(255,255,255,.05);color:var(--muted);border-color:var(--line-strong)}

/* ============ 按钮 ============ */
.btn,.button{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;font-weight:700;line-height:1.4;
  cursor:pointer;
  text-decoration:none;
  transition:transform var(--ease), box-shadow var(--ease), background var(--ease), color var(--ease), border-color var(--ease);
}
.btn--primary,.button.btn--primary{
  background:linear-gradient(135deg,#5FF3DC,#2FE3C9 55%,#1FC4AE);
  color:#06121A;
  box-shadow:0 0 0 1px rgba(47,227,201,.35), 0 14px 34px -14px rgba(47,227,201,.6);
}
.btn--primary:hover,.button.btn--primary:hover{
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(47,227,201,.45), 0 20px 40px -14px rgba(47,227,201,.66);
}
.btn--primary:active,.button.btn--primary:active{transform:translateY(0)}
.btn--ghost,.button.btn--ghost{
  background:transparent;color:var(--text);border-color:var(--line-strong);
}
.btn--ghost:hover,.button.btn--ghost:hover{
  background:rgba(47,227,201,.08);
  border-color:rgba(47,227,201,.5);
  color:var(--primary);
  transform:translateY(-2px);
}
.btn--ghost:active,.button.btn--ghost:active{transform:translateY(0)}
.btn--sm{padding:9px 18px;font-size:14px}
.button{background:none;box-shadow:none}

/* ============ 分类 Hero ============ */
.cat-hero{padding:44px 0 0}
.hero-shell{
  position:relative;
  border-radius:24px;
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  background:var(--bg-2);
}
.hero-bg{
  position:absolute;inset:0;
  width:100%;height:100%;
  object-fit:cover;
  opacity:.5;
}
.hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(100deg, rgba(8,13,26,.94) 6%, rgba(8,13,26,.72) 46%, rgba(8,13,26,.42) 100%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.15fr .85fr;
  gap:40px;align-items:center;
  padding:52px 48px;
}
.hero-copy h1{font-size:40px;line-height:1.24;font-weight:900;margin-bottom:16px}
.hero-copy h1 em{
  font-style:normal;
  background:linear-gradient(120deg,#2FE3C9,#7C5CFF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{color:var(--muted);font-size:16px;max-width:520px;margin-bottom:26px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line);
  padding-top:20px;
}
.hero-stats div{padding-right:18px;border-right:1px solid var(--line)}
.hero-stats div:last-child{border-right:0}
.hero-stats strong{display:block;font-size:22px;font-weight:900;color:var(--primary)}
.hero-stats span{font-size:13px;color:var(--muted)}
.hero-media{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
  background:var(--glass);
}
.hero-media img{width:100%;height:320px;object-fit:cover}
.hero-media .float-tag{
  position:absolute;left:16px;bottom:16px;
  padding:7px 14px;border-radius:999px;
  font-size:13px;font-weight:700;
  background:rgba(200,240,75,.16);
  color:var(--promo);
  border:1px solid rgba(200,240,75,.45);
  backdrop-filter:blur(8px);
}
.crumbs{font-size:13px;color:var(--muted);padding:22px 0 0}
.crumbs a{color:var(--muted);transition:color var(--ease)}
.crumbs a:hover{color:var(--primary)}
.crumbs span{margin:0 8px;opacity:.55}

/* ============ 说明段 ============ */
.intro-grid{display:grid;grid-template-columns:1fr 320px;gap:44px;align-items:start}
.prose p{color:#C6D2E4;margin-bottom:18px;max-width:760px}
.prose p strong{color:var(--text)}
.aside-card{
  padding:26px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  backdrop-filter:blur(14px);
}
.aside-card h3{font-size:18px;margin-bottom:16px}
.aside-list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:11px 0;border-bottom:1px solid var(--line);
  font-size:14px;color:var(--muted);
}
.aside-list li:last-child{border-bottom:0}
.aside-list li i{
  flex:0 0 20px;height:20px;border-radius:6px;margin-top:3px;
  background:rgba(47,227,201,.14);
  display:flex;align-items:center;justify-content:center;
  color:var(--primary);font-size:12px;font-style:normal;font-weight:700;
}

/* ============ 卡片网格 ============ */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.card{
  position:relative;
  display:flex;flex-direction:column;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  backdrop-filter:blur(14px);
  transition:transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);
}
.card:hover{
  transform:translateY(-4px);
  border-color:rgba(47,227,201,.45);
  box-shadow:0 32px 70px -34px rgba(47,227,201,.35);
}
.card-media{position:relative;height:160px;overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms cubic-bezier(.4,0,.2,1)}
.card:hover .card-media img{transform:scale(1.05)}
.card-media .badge{position:absolute;left:14px;top:14px;backdrop-filter:blur(8px)}
.card-body{padding:22px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:19px;margin-bottom:10px;line-height:1.45}
.card-body p{font-size:14px;color:var(--muted);line-height:1.75}
.card-meta{
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);
}
.card-meta .arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:700;
  transition:transform var(--ease);
}
.card:hover .card-meta .arrow{transform:translateX(4px)}
.card-index{
  position:absolute;right:16px;top:14px;z-index:2;
  font-size:13px;font-weight:700;color:var(--primary);
  padding:3px 10px;border-radius:999px;
  background:rgba(8,13,26,.6);
  border:1px solid rgba(47,227,201,.35);
  font-variant-numeric:tabular-nums;
}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:var(--glass-2);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color var(--ease), background var(--ease);
}
.faq-item:hover{border-color:rgba(47,227,201,.3)}
.faq-q{
  width:100%;
  display:flex;align-items:center;gap:14px;
  padding:18px 20px;
  background:none;border:0;
  text-align:left;cursor:pointer;
  color:var(--text);font-size:16px;font-weight:700;line-height:1.6;
}
.faq-q .idx{
  flex:0 0 auto;
  font-size:13px;font-weight:700;color:var(--primary);
  padding-left:12px;border-left:2px solid rgba(47,227,201,.6);
  font-variant-numeric:tabular-nums;
  font-style:normal;
}
.faq-q .chev{
  margin-left:auto;flex:0 0 auto;
  width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);color:var(--muted);
  transition:transform 200ms cubic-bezier(.4,0,.2,1), color var(--ease), border-color var(--ease);
}
.faq-item.is-open .faq-q .chev{transform:rotate(180deg);color:var(--primary);border-color:rgba(47,227,201,.5)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 220ms cubic-bezier(.4,0,.2,1);
}
.faq-a .inner{
  padding:0 20px 20px 46px;
  font-size:15px;line-height:1.74;color:var(--muted);
  max-width:720px;
}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;
  border-radius:22px;
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  padding:40px 44px;
  display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,227,201,.8),rgba(124,92,255,.7),transparent);
}
.cta-band h2{font-size:26px;margin-bottom:12px}
.cta-band p{color:var(--muted);font-size:15px;max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:24px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(13,21,38,.55), rgba(8,13,26,.9));
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,227,201,.65),rgba(124,92,255,.55),transparent);
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:0;padding:56px 0 38px;
}
.footer-col{padding:0 26px;border-right:1px solid var(--line)}
.footer-col:first-child{padding-left:0}
.footer-col:last-child{border-right:0;padding-right:0}
.footer-col h3{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col ul li{font-size:14px;color:var(--muted);margin-bottom:10px;line-height:1.7}
.footer-col ul li a{color:var(--muted);transition:color var(--ease), transform var(--ease);display:inline-block}
.footer-col ul li a:hover{color:var(--primary);transform:translateX(3px)}
.footer-brandline{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brandline strong{font-size:16px}
.footer-col p{font-size:14px;color:var(--muted);margin-bottom:10px;line-height:1.75}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 34px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .container{max-width:1080px}
}
@media (max-width:1279px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .intro-grid{grid-template-columns:1fr 288px;gap:32px}
}
@media (max-width:1023px){
  .side-nav{display:none}
  .mobile-bar{display:flex}
  .page{margin-left:0;padding-top:56px}
  .container{padding:0 24px}
  .section{padding:64px 0}
  .section--tight{padding:48px 0}
  .hero-inner{grid-template-columns:1fr;padding:38px 30px;gap:30px}
  .hero-copy h1{font-size:34px}
  .hero-media img{height:260px}
  .intro-grid{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;padding:44px 0 30px;gap:28px 0}
  .footer-col{padding:0 20px}
  .footer-col:nth-child(2){border-right:0}
  .footer-col:nth-child(odd){padding-left:0}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:52px 0}
  .hero-inner{padding:30px 22px}
  .hero-copy h1{font-size:28px;line-height:1.34}
  .hero-sub{font-size:15px}
  .hero-stats{grid-template-columns:1fr;border-top:1px solid var(--line);padding-top:0}
  .hero-stats div{border-right:0;border-bottom:1px solid var(--line);padding:12px 0;display:flex;align-items:baseline;gap:10px}
  .hero-stats div:last-child{border-bottom:0}
  .hero-stats strong{font-size:20px}
  .card-grid{grid-template-columns:1fr;gap:18px}
  .card-media{height:170px}
  .section-head h2{font-size:23px}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-col{padding:0;border-right:0;border-bottom:1px solid var(--line);padding-bottom:20px}
  .footer-col:last-child{border-bottom:0;padding-bottom:0}
  .faq-a .inner{padding-left:20px}
}
@media (max-width:520px){
  .hero-copy h1{font-size:25px}
  .btn,.button{padding:12px 20px;font-size:14px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
}

/* roulang page: category2 */
:root{
  --bg:#080D1A;
  --surface:#0D1526;
  --primary:#2FE3C9;
  --accent:#7C5CFF;
  --lime:#C8F04B;
  --text:#E6EDF7;
  --muted:#93A4C0;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.03));
  --input-bg:rgba(255,255,255,.04);
  --r-xl:24px;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:10px;
  --r-pill:999px;
  --shadow:0 28px 64px -32px rgba(0,0,0,.85);
  --shadow-soft:0 18px 40px -26px rgba(0,0,0,.8);
  --nav-w:248px;
  --gap:24px;
  --sec:96px;
}

*,*::before,*::after{box-sizing:border-box;}
html{
  background:var(--bg);
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}
body{
  margin:0;
  background:transparent;
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:28px;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  pointer-events:none;
  background:
    radial-gradient(680px 420px at 10% 6%, rgba(47,227,201,.10), transparent 70%),
    radial-gradient(760px 500px at 90% 84%, rgba(124,92,255,.10), transparent 72%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 38%, #000, transparent 78%);
  mask-image:radial-gradient(circle at 50% 38%, #000, transparent 78%);
}

h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select,textarea{font:inherit;color:inherit;}
table{border-collapse:collapse;width:100%;}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:3px;
  border-radius:6px;
}

/* Foundation 默认控件覆盖 */
.button,
button.button{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  margin:0;
  padding:0 26px;
  height:48px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  background:linear-gradient(135deg,#4CF0D6,#20C9B4);
  color:#06121A;
  font-size:15px;
  font-weight:700;
  line-height:1;
  box-shadow:0 0 0 1px rgba(47,227,201,.35), 0 14px 34px -14px rgba(47,227,201,.6);
  transition:transform .18s ease, box-shadow .18s ease, filter .18s ease, background-color .18s ease;
}
.button:hover,button.button:hover{
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(47,227,201,.45), 0 20px 40px -14px rgba(47,227,201,.66);
}
.button:active,button.button:active{
  transform:translateY(0);
  filter:brightness(.98);
}
.button.secondary,button.button.secondary{
  background:transparent;
  color:var(--text);
  border:1px solid var(--line-strong);
  box-shadow:none;
}
.button.secondary:hover,button.button.secondary:hover{
  background:rgba(47,227,201,.08);
  border-color:rgba(47,227,201,.5);
}
.button:focus,button.button:focus{outline:2px solid var(--primary);outline-offset:3px;}

/* 布局骨架 */
.page-main{
  margin-left:var(--nav-w);
  min-height:100vh;
  padding-bottom:0;
}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 40px;
}
.section{
  margin-bottom:var(--sec);
}
.section:last-child{margin-bottom:0;}

/* 品牌标记 */
.brand-mark{
  display:inline-block;
  width:12px;
  height:12px;
  border-radius:4px;
  background:var(--primary);
  box-shadow:0 0 0 1px rgba(47,227,201,.4), 0 0 18px rgba(47,227,201,.85);
  flex:0 0 auto;
}

/* 左侧竖向导航 */
.side-nav{
  position:fixed;
  top:0;
  left:0;
  width:var(--nav-w);
  height:100vh;
  z-index:60;
  display:flex;
  flex-direction:column;
  padding:28px 20px 24px;
  background:linear-gradient(180deg,rgba(13,21,38,.92),rgba(8,13,26,.86));
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-right:1px solid var(--line);
}
.side-logo{
  display:flex;
  align-items:center;
  gap:10px;
  padding:6px 8px 22px;
  border-bottom:1px solid var(--line);
}
.side-logo strong{
  font-size:16px;
  font-weight:900;
  letter-spacing:.5px;
}
.side-logo em{
  display:block;
  font-style:normal;
  font-size:12px;
  line-height:18px;
  color:var(--muted);
  font-weight:400;
}
.nav-list{
  margin-top:22px;
  display:flex;
  flex-direction:column;
  gap:6px;
}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  min-height:46px;
  padding:0 14px;
  border-radius:12px;
  font-size:15px;
  font-weight:500;
  color:var(--muted);
  transition:transform .18s ease, color .18s ease, background-color .18s ease;
}
.nav-item::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:3px;
  height:0;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(47,227,201,.9);
  transform:translateY(-50%);
  transition:height .18s ease;
}
.nav-item:hover{
  transform:translateX(4px);
  color:var(--text);
  background:rgba(255,255,255,.04);
}
.nav-item.is-active{
  color:var(--text);
  background:var(--glass);
  border:1px solid var(--line-strong);
  font-weight:700;
}
.nav-item.is-active::before{height:20px;}
.side-foot{
  margin-top:auto;
  padding-top:20px;
  border-top:1px solid var(--line);
}
.side-foot p{
  font-size:12px;
  line-height:20px;
  color:var(--muted);
}
.side-foot .side-cta{
  display:flex;
  align-items:center;
  justify-content:center;
  height:40px;
  margin-bottom:14px;
  border-radius:var(--r-pill);
  font-size:14px;
  font-weight:700;
  color:#06121A;
  background:linear-gradient(135deg,#4CF0D6,#20C9B4);
  box-shadow:0 0 0 1px rgba(47,227,201,.35), 0 12px 26px -14px rgba(47,227,201,.7);
  transition:transform .18s ease, filter .18s ease;
}
.side-foot .side-cta:hover{transform:translateY(-2px);filter:brightness(1.08);}

/* 移动端顶栏与抽屉 */
.mobile-bar{
  display:none;
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:56px;
  z-index:70;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:0 16px;
  background:rgba(8,13,26,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.mobile-logo{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:900;
}
.hamburger{
  width:40px;
  height:40px;
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:5px;
  border-radius:10px;
  border:1px solid var(--line);
}
.hamburger span{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--text);
}
.mobile-bar .mini-cta{
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 16px;
  border-radius:var(--r-pill);
  font-size:13px;
  font-weight:700;
  color:#06121A;
  background:linear-gradient(135deg,#4CF0D6,#20C9B4);
}
.drawer{
  position:fixed;
  top:0;
  left:0;
  width:78vw;
  max-width:320px;
  height:100%;
  z-index:80;
  padding:24px 20px;
  display:flex;
  flex-direction:column;
  background:linear-gradient(180deg,#0D1526,#080D1A);
  border-right:1px solid var(--line);
  transform:translateX(-102%);
  transition:transform .26s ease;
}
.drawer.is-open{transform:translateX(0);}
.drawer-mask{
  position:fixed;
  inset:0;
  z-index:75;
  background:rgba(4,8,16,.72);
  opacity:0;
  visibility:hidden;
  transition:opacity .24s ease, visibility .24s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer .side-logo{padding-bottom:18px;}

/* 通用文字与徽章 */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  line-height:22px;
  font-weight:500;
  color:var(--primary);
  letter-spacing:1px;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  font-size:13px;
  font-weight:500;
  line-height:1;
  white-space:nowrap;
}
.badge-cyan{color:var(--primary);background:rgba(47,227,201,.12);border:1px solid rgba(47,227,201,.4);}
.badge-purple{color:#B7A4FF;background:rgba(124,92,255,.14);border:1px solid rgba(124,92,255,.42);}
.badge-lime{color:var(--lime);background:rgba(200,240,75,.12);border:1px solid rgba(200,240,75,.4);}
.badge-plain{color:var(--muted);background:rgba(255,255,255,.05);border:1px solid var(--line-strong);}

h1{font-size:40px;line-height:56px;font-weight:900;letter-spacing:-.5px;}
h2{font-size:28px;line-height:38px;font-weight:700;letter-spacing:-.2px;}
h3{font-size:20px;line-height:30px;font-weight:700;}
.lead{font-size:17px;line-height:30px;color:var(--muted);}
.muted{color:var(--muted);font-size:13px;line-height:22px;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
}
.section-head p{color:var(--muted);font-size:15px;line-height:26px;max-width:560px;}
.section-head .head-text h2{margin-top:10px;}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:700;
  line-height:1;
  border:1px solid transparent;
  transition:transform .18s ease, box-shadow .18s ease, filter .18s ease, background-color .18s ease, border-color .18s ease;
}
.btn-primary{
  color:#06121A;
  background:linear-gradient(135deg,#4CF0D6,#20C9B4);
  box-shadow:0 0 0 1px rgba(47,227,201,.35), 0 14px 34px -14px rgba(47,227,201,.6);
}
.btn-primary:hover{
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(47,227,201,.45), 0 20px 40px -14px rgba(47,227,201,.66);
}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  color:var(--text);
  background:transparent;
  border-color:var(--line-strong);
}
.btn-ghost:hover{
  background:rgba(47,227,201,.08);
  border-color:rgba(47,227,201,.5);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}

/* Hero */
.cat-hero{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-xl);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.cat-hero .hero-bg{
  position:absolute;
  inset:0;
  background-image:linear-gradient(100deg, rgba(8,13,26,.94) 6%, rgba(8,13,26,.62) 58%, rgba(8,13,26,.4) 100%), url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
}
.hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:55fr 45fr;
  gap:var(--gap);
  padding-top:64px;
  padding-bottom:64px;
  align-items:center;
}
.crumbs{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  line-height:22px;
  color:var(--muted);
  margin-bottom:22px;
}
.crumbs a{transition:color .18s ease;}
.crumbs a:hover{color:var(--primary);}
.crumbs span[aria-current]{color:var(--text);}
.hero-copy h1{margin:16px 0 14px;}
.hero-sub{
  font-size:18px;
  line-height:30px;
  color:var(--text);
  font-weight:500;
  margin-bottom:14px;
}
.hero-desc{
  font-size:15px;
  line-height:27px;
  color:var(--muted);
  max-width:520px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin:28px 0 30px;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  border-top:1px solid var(--line);
}
.hero-stats div{
  flex:1 1 140px;
  padding:18px 20px 4px 0;
  border-right:1px solid var(--line);
}
.hero-stats div:last-child{border-right:0;}
.hero-stats strong{
  display:block;
  font-size:24px;
  line-height:32px;
  font-weight:900;
  color:var(--primary);
}
.hero-stats span{font-size:13px;line-height:22px;color:var(--muted);}

.hero-visual{position:relative;}
.hero-visual img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-lg);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
}
.float-tag{
  position:absolute;
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 14px;
  border-radius:var(--r-pill);
  font-size:13px;
  font-weight:700;
  color:#06121A;
  background:linear-gradient(135deg,#DFFC7A,#B7E33B);
  box-shadow:0 12px 28px -14px rgba(200,240,75,.8);
}
.float-tag.t1{top:18px;left:-14px;}
.float-tag.t2{bottom:22px;right:-10px;}

/* 玻璃卡片基类 */
.glass{
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow), inset 0 1px 0 rgba(255,255,255,.08);
}

/* 说明段 */
.intro-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr;
  gap:32px;
  align-items:start;
}
.intro-main h2{margin-bottom:18px;}
.intro-main p{
  color:var(--muted);
  font-size:16px;
  line-height:29px;
  margin-bottom:16px;
}
.intro-main p strong{color:var(--text);font-weight:700;}
.intro-side{padding:26px;}
.intro-side h3{
  font-size:16px;
  line-height:24px;
  margin-bottom:16px;
}
.intro-side ul{display:flex;flex-direction:column;gap:14px;}
.intro-side li{
  display:flex;
  gap:12px;
  font-size:14px;
  line-height:24px;
  color:var(--muted);
}
.intro-side li b{
  color:var(--primary);
  font-weight:700;
  font-variant-numeric:tabular-nums;
  flex:0 0 auto;
}

/* 条目卡片网格 */
.entry-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--gap);
}
.entry-card{
  display:flex;
  flex-direction:column;
  overflow:hidden;
  transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.entry-card:hover{
  transform:translateY(-4px);
  border-color:rgba(47,227,201,.45);
  box-shadow:0 32px 70px -34px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.1);
}
.entry-thumb{
  position:relative;
  overflow:hidden;
}
.entry-thumb img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform .4s ease;
}
.entry-card:hover .entry-thumb img{transform:scale(1.05);}
.entry-thumb .badge{
  position:absolute;
  left:14px;
  top:14px;
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.entry-body{
  padding:22px 24px 24px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.entry-body h3{margin-bottom:10px;}
.entry-body p{
  color:var(--muted);
  font-size:14px;
  line-height:25px;
  margin-bottom:20px;
}
.entry-more{
  margin-top:auto;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:700;
  color:var(--primary);
  transition:gap .18s ease, color .18s ease;
}
.entry-more:hover{gap:12px;color:#7CF2DF;}

/* FAQ */
.faq-list{
  display:flex;
  flex-direction:column;
  gap:14px;
  max-width:900px;
}
.faq-item{padding:4px 26px;}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:18px;
  padding:22px 0;
  text-align:left;
}
.faq-num{
  flex:0 0 auto;
  font-size:15px;
  font-weight:900;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
  padding-right:16px;
  border-right:2px solid rgba(47,227,201,.45);
}
.faq-text{
  flex:1;
  font-size:17px;
  line-height:28px;
  font-weight:700;
}
.faq-icon{
  flex:0 0 auto;
  width:22px;
  height:22px;
  position:relative;
  transition:transform .2s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--primary);
  border-radius:2px;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-icon::after{left:10px;top:0;width:2px;height:22px;}
.faq-q[aria-expanded="true"] .faq-icon{transform:rotate(180deg);}
.faq-q[aria-expanded="true"] .faq-icon::after{opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .2s ease;
}
.faq-a-inner{
  padding:0 0 24px 44px;
  max-width:720px;
  font-size:15px;
  line-height:26px;
  color:var(--muted);
}

/* CTA 条 */
.cta-band{
  position:relative;
  overflow:hidden;
  padding:40px 44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(47,227,201,.85), rgba(124,92,255,.7), transparent);
}
.cta-band h2{margin-bottom:10px;}
.cta-band p{
  color:var(--muted);
  font-size:15px;
  line-height:26px;
  max-width:620px;
}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* 页脚 */
.site-footer{
  margin-top:96px;
  padding:56px 0 32px;
  position:relative;
  background:linear-gradient(180deg, rgba(13,21,38,.6), rgba(8,13,26,.9));
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(47,227,201,.7), rgba(124,92,255,.6), transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:0;
}
.footer-col{
  padding:0 28px;
  border-right:1px solid var(--line);
}
.footer-col:first-child{padding-left:0;}
.footer-col:last-child{border-right:0;padding-right:0;}
.footer-brandline{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.footer-brandline strong{font-size:16px;font-weight:900;}
.footer-col p{
  color:var(--muted);
  font-size:13px;
  line-height:24px;
  margin-bottom:10px;
}
.footer-col h3{
  font-size:14px;
  line-height:22px;
  font-weight:700;
  margin-bottom:16px;
  color:var(--text);
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{
  color:var(--muted);
  font-size:13px;
  line-height:22px;
}
.footer-col li a{transition:color .18s ease, transform .18s ease;display:inline-block;}
.footer-col li a:hover{color:var(--primary);transform:translateX(3px);}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom p{color:var(--muted);font-size:12px;line-height:22px;}

/* 响应式 */
@media (min-width:1440px){
  .container{max-width:1200px;}
}
@media (max-width:1439px){
  .container{max-width:1080px;padding:0 36px;}
}
@media (max-width:1279px){
  .entry-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;row-gap:36px;}
  .footer-col{padding:0 24px;}
  .footer-col:nth-child(2){border-right:0;}
  .footer-col:nth-child(3){padding-left:0;}
}
@media (max-width:1023px){
  .side-nav{display:none;}
  .mobile-bar{display:flex;}
  .page-main{margin-left:0;padding-top:56px;}
  .container{padding:0 24px;}
  :root{--sec:72px;}
  .hero-inner{grid-template-columns:1fr;padding-top:44px;padding-bottom:52px;}
  .hero-visual{order:-1;}
  .hero-visual img{aspect-ratio:16/9;}
  .float-tag.t1{left:12px;}
  .float-tag.t2{right:12px;}
  .intro-grid{grid-template-columns:1fr;gap:24px;}
  .faq-item{padding:4px 20px;}
}
@media (max-width:767px){
  h1{font-size:28px;line-height:40px;}
  h2{font-size:24px;line-height:34px;}
  h3{font-size:18px;line-height:28px;}
  :root{--sec:64px;}
  .entry-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:26px;}
  .hero-actions .btn{flex:1 1 auto;}
  .hero-stats div{flex:1 1 100%;border-right:0;border-bottom:1px solid var(--line);padding:14px 0 12px;}
  .hero-stats div:last-child{border-bottom:0;}
  .cta-band{padding:28px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;row-gap:28px;}
  .footer-col{padding:0 0 20px;border-right:0;border-bottom:1px solid var(--line);}
  .footer-col:last-child{border-bottom:0;padding-bottom:0;}
  .faq-a-inner{padding-left:0;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .faq-q{gap:12px;}
  .faq-text{font-size:15px;line-height:24px;}
  .hero-sub{font-size:16px;line-height:26px;}
}