/* roulang page: index */
:root{
  --bs-primary:#F2A93B;
  --bs-primary-rgb:242,169,59;
  --bs-body-bg:#0B1220;
  --bs-body-color:#A9B6CC;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:14px;
  --bs-link-color:#F2A93B;
  --bs-link-hover-color:#FFC65C;
  --bs-font-sans-serif:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;

  --bg-900:#060A12;
  --bg-800:#0B1220;
  --bg-700:#101A2C;
  --gold-500:#F2A93B;
  --gold-400:#FFC65C;
  --gold-glow:rgba(242,169,59,.35);
  --ember-500:#E2703A;
  --jade-400:#34D3B0;
  --indigo-600:rgba(30,58,110,.55);
  --line:rgba(255,255,255,.08);
  --line-gold:rgba(242,169,59,.35);
  --text-1:#EAF0F8;
  --text-2:#A9B6CC;
  --text-3:#7B8AA0;
  --r-card:18px;
  --r-img:14px;
  --r-btn:14px;
  --r-input:12px;
  --shadow-card:0 20px 44px rgba(2,6,16,.50);
  --shadow-hover:0 26px 56px rgba(2,6,16,.62);
  --inset-line:inset 0 1px 0 rgba(255,255,255,.06);
  --sidebar-w:240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--bg-800);
  color:var(--text-2);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(680px 420px at 10% -4%, rgba(242,169,59,.08), transparent 62%),
    radial-gradient(820px 560px at 92% 8%, rgba(30,58,110,.30), transparent 68%);
}
img{max-width:100%;display:block}
a{color:var(--gold-500);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--gold-400)}
h1,h2,h3,h4{color:var(--text-1);margin:0;font-weight:700;letter-spacing:.01em}
h1{font-size:clamp(30px,4vw,46px);line-height:1.2}
h2{font-size:clamp(24px,2.6vw,32px);line-height:1.25}
h3{font-size:20px;line-height:1.35;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,.nav-item:focus-visible{
  outline:2px solid var(--gold-500);
  outline-offset:2px;
  border-radius:8px;
}
::selection{background:rgba(242,169,59,.28);color:#fff}

/* ============ 左侧 App Shell 导航 ============ */
.app-sidebar{
  position:fixed;top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  display:flex;flex-direction:column;
  padding:22px 18px 20px;
  background:rgba(9,14,26,.72);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border-right:1px solid var(--line);
  z-index:60;
  transition:width .22s ease-out,padding .22s ease-out;
}
.brand{display:flex;align-items:center;gap:11px;padding:4px 6px 20px;text-decoration:none}
.brand-mark{
  position:relative;flex:0 0 36px;width:36px;height:36px;border-radius:50%;
  border:2px solid var(--gold-500);
  box-shadow:0 0 18px var(--gold-glow);
}
.brand-mark::after{
  content:"";position:absolute;inset:7px;border-radius:50%;
  background:linear-gradient(150deg,var(--gold-400),var(--ember-500));
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{color:var(--text-1);font-size:16px;font-weight:700;letter-spacing:.04em}
.brand-sub{color:var(--text-3);font-size:11px;letter-spacing:.28em;margin-top:3px}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:4px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px 0 15px;border-radius:12px;
  color:var(--text-2);font-size:15px;text-decoration:none;
  transition:background .18s ease-out,color .18s ease-out;
}
.nav-item svg{flex:0 0 18px;opacity:.9}
.nav-item:hover{background:rgba(242,169,59,.10);color:var(--text-1)}
.nav-item.is-active{background:rgba(242,169,59,.14);color:var(--gold-400)}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;
  background:var(--gold-500);box-shadow:0 0 12px var(--gold-glow);
}
.side-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line)}
.side-tip{color:var(--text-3);font-size:13px;line-height:1.6;margin-bottom:12px}
.btn-gold{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border:0;border-radius:var(--r-btn);
  background:linear-gradient(135deg,var(--gold-500),var(--ember-500));
  color:#10131B;font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;
  box-shadow:0 10px 30px var(--gold-glow),inset 0 1px 0 rgba(255,255,255,.32);
  transition:filter .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn-gold:hover{filter:brightness(1.06);transform:translateY(-1px);color:#10131B;
  box-shadow:0 0 28px var(--gold-glow),inset 0 1px 0 rgba(255,255,255,.32)}
.btn-gold:active{transform:translateY(0);box-shadow:0 6px 16px var(--gold-glow)}
.btn-gold:focus-visible{outline:2px solid var(--gold-500);outline-offset:2px}
.btn-block{width:100%}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.16);background:transparent;
  color:var(--text-1);font-size:15px;font-weight:500;text-decoration:none;cursor:pointer;
  transition:border-color .2s ease-out,background .2s ease-out,transform .2s ease-out;
}
.btn-ghost:hover{border-color:rgba(242,169,59,.40);background:rgba(255,255,255,.06);color:var(--text-1);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.text-link{
  color:var(--gold-500);
  border-bottom:1px solid rgba(242,169,59,.45);
  padding-bottom:2px;
  font-size:14px;
  transition:color .2s ease-out,border-color .2s ease-out;
}
.text-link:hover{color:var(--gold-400);border-bottom-color:var(--gold-400)}

/* ============ 移动端顶部栏 ============ */
.mobile-topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
  align-items:center;justify-content:space-between;padding:0 16px;
  background:rgba(9,14,26,.86);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.mobile-topbar .brand{padding:0}
.menu-btn{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.04);display:flex;align-items:center;justify-content:center;
  color:var(--text-1);cursor:pointer;transition:border-color .2s ease-out,background .2s ease-out;
}
.menu-btn:hover{border-color:var(--line-gold);background:rgba(242,169,59,.10)}
.offcanvas.side-drawer{background:rgba(9,14,26,.97);color:var(--text-2);width:300px;border-right:1px solid var(--line)}
.offcanvas.side-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 18px}
.offcanvas.side-drawer .offcanvas-body{padding:18px}
.drawer-close{
  width:38px;height:38px;border-radius:11px;border:1px solid var(--line-gold);
  background:transparent;color:var(--gold-400);font-size:20px;line-height:1;
  display:flex;align-items:center;justify-content:center;
  transition:background .2s ease-out,color .2s ease-out;
}
.drawer-close:hover{background:rgba(242,169,59,.12);color:var(--gold-400)}

/* ============ 主内容区 ============ */
.site-main{position:relative;z-index:1;margin-left:var(--sidebar-w)}
.container{max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-head{margin-bottom:40px;max-width:760px}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:16px}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px}
.section-head-row .section-head{margin-bottom:0}
.glass{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);
  border-radius:var(--r-card);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card),var(--inset-line);
}
.badge-gold,.badge-jade{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;
  font-size:12px;line-height:1;letter-spacing:.02em;
}
.badge-gold{background:rgba(242,169,59,.12);color:var(--gold-400)}
.badge-jade{background:rgba(52,211,176,.12);color:var(--jade-400)}

/* ============ Hero ============ */
.hero{position:relative;padding:104px 0 88px;overflow:hidden}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.6) 0 1px,transparent 1px 26px);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
  min-height:560px;max-width:1200px;margin:0 auto;padding:0 32px;
}
.hero-copy{max-width:620px}
.hero-tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;margin-bottom:22px;
  border-radius:999px;border:1px solid var(--line-gold);background:rgba(242,169,59,.08);
  color:var(--gold-400);font-size:13px;letter-spacing:.04em;
}
.hero h1{margin-bottom:18px}
.hero-sub{color:var(--text-2);font-size:17px;line-height:1.8;max-width:520px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-trust{display:flex;flex-wrap:wrap;gap:14px}
.hero-trust li{
  display:flex;align-items:baseline;gap:8px;
  padding:10px 16px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
}
.hero-trust strong{
  color:var(--gold-400);font-size:17px;font-weight:700;
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.hero-trust span{color:var(--text-3);font-size:13px}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-img);border:1px solid var(--line);
  background:linear-gradient(140deg,#101A2C,#060A12);
}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-img);pointer-events:none;
  background:linear-gradient(180deg,rgba(6,10,18,0) 42%,rgba(6,10,18,.74));
}
.hero-glass{
  position:absolute;right:16px;bottom:16px;z-index:2;
  width:78%;max-width:320px;padding:16px 18px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.10),rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.12);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}
.hero-glass p{color:var(--text-1);font-size:14px;font-weight:600;margin-bottom:10px}
.hero-glass-nums{display:flex;gap:22px}
.hero-glass-nums span{color:var(--text-3);font-size:12px;display:flex;align-items:baseline;gap:6px}
.hero-glass-nums strong{
  color:var(--gold-400);font-size:20px;font-weight:700;
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}

/* ============ 三步上手 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;position:relative}
.steps::before{
  content:"";position:absolute;left:0;right:0;top:56px;height:1px;
  background:linear-gradient(90deg,rgba(242,169,59,0),rgba(242,169,59,.42),rgba(242,169,59,0));
}
.step-card{
  position:relative;padding:28px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);box-shadow:var(--shadow-card),var(--inset-line);
  transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.step-card:hover{border-color:var(--line-gold);transform:translateY(-4px);box-shadow:var(--shadow-hover),var(--inset-line)}
.step-num{
  display:inline-block;margin-bottom:16px;color:var(--gold-500);
  font-size:30px;font-weight:700;line-height:1;
  font-variant-numeric:tabular-nums;letter-spacing:.04em;
  text-shadow:0 0 22px var(--gold-glow);
}
.step-card h3{margin-bottom:10px}
.step-card p{color:var(--text-2);font-size:14px;line-height:1.75}
.section-more{margin-top:26px}

/* ============ 能力覆盖（非对称） ============ */
.ability{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:start}
.ability-copy h2{margin-bottom:16px}
.ability-copy p{color:var(--text-2);margin-bottom:26px}
.ability-stats{display:flex;gap:28px;flex-wrap:wrap}
.ability-stats div{display:flex;flex-direction:column;gap:4px}
.ability-stats strong{
  color:var(--gold-400);font-size:34px;line-height:1;font-weight:700;
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.ability-stats span{color:var(--text-3);font-size:13px}
.ability-list{display:grid;gap:16px}
.ability-item{
  display:flex;gap:16px;padding:22px 24px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  border:1px solid var(--line);
  transition:border-color .2s ease-out,transform .2s ease-out;
}
.ability-item:hover{border-color:var(--line-gold);transform:translateY(-3px)}
.ability-item .dot{
  flex:0 0 34px;width:34px;height:34px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(242,169,59,.12);color:var(--gold-400);
}
.ability-item h3{font-size:17px;margin-bottom:6px}
.ability-item p{color:var(--text-2);font-size:14px;line-height:1.75}

/* ============ 使用反馈（非对称网格） ============ */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.case-card{
  padding:26px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  border:1px solid var(--line);box-shadow:var(--shadow-card),var(--inset-line);
  transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.case-card:hover{border-color:var(--line-gold);transform:translateY(-4px);box-shadow:var(--shadow-hover),var(--inset-line)}
.case-card.major{
  grid-column:span 2;grid-row:span 2;
  display:flex;flex-direction:column;gap:20px;padding:30px;
  background:linear-gradient(160deg,rgba(242,169,59,.09),rgba(255,255,255,.015));
}
.case-card.major img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--line);background:linear-gradient(140deg,#101A2C,#060A12);
}
.case-metric{
  color:var(--gold-400);font-size:38px;font-weight:700;line-height:1;
  font-variant-numeric:tabular-nums;letter-spacing:.02em;margin-bottom:12px;
}
.case-card.major .case-metric{font-size:44px}
.case-quote{color:var(--text-1);font-size:15px;line-height:1.7;margin-bottom:10px}
.case-label{color:var(--text-3);font-size:13px}
.case-card.minor .case-metric{font-size:34px;color:var(--jade-400)}

/* ============ 最新信息（CMS） ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  border:1px solid var(--line);box-shadow:var(--shadow-card),var(--inset-line);
  transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.news-card:hover{border-color:var(--line-gold);transform:translateY(-4px);box-shadow:var(--shadow-hover),var(--inset-line)}
.news-cover{display:block;overflow:hidden;border-radius:var(--r-img);margin:16px 16px 0}
.news-cover img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border:1px solid var(--line);border-radius:var(--r-img);
  background:linear-gradient(140deg,#101A2C,#060A12);
  transition:transform .2s ease-out;
}
.news-card:hover .news-cover img{transform:scale(1.03)}
.news-body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1}
.news-body .badge-gold{align-self:flex-start;margin-bottom:12px}
.news-title{font-size:17px;line-height:1.5;font-weight:600;margin-bottom:10px}
.news-title a{color:var(--text-1)}
.news-title a:hover{color:var(--gold-400)}
.news-title,.news-sum{
  display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden;
}
.news-title{-webkit-line-clamp:2;line-clamp:2}
.news-sum{
  -webkit-line-clamp:2;line-clamp:2;
  color:var(--text-2);font-size:14px;line-height:1.7;margin-bottom:18px;
}
.news-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line);
}
.news-meta time{color:var(--text-3);font-size:13px;font-variant-numeric:tabular-nums}
.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  padding:40px 24px;text-align:center;border-radius:var(--r-card);
}
.empty-state svg{width:48px;height:48px;color:rgba(242,169,59,.6)}
.empty-state p{color:var(--text-2);font-size:15px}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-aside{position:sticky;top:96px}
.faq-aside h2{margin-bottom:14px}
.faq-aside p{color:var(--text-2);font-size:15px;margin-bottom:22px}
.faq-accordion .accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;
}
.faq-accordion .accordion-item:first-of-type{border-top:1px solid var(--line)}
.faq-accordion .accordion-button{
  background:transparent;color:var(--text-1);font-size:17px;font-weight:600;
  padding:18px 8px;border-radius:0;box-shadow:none;gap:16px;
  transition:background .2s ease-out,color .2s ease-out,padding .2s ease-out;
}
.faq-accordion .accordion-button:hover{color:var(--gold-400)}
.faq-accordion .accordion-button:not(.collapsed){
  background:rgba(242,169,59,.05);color:var(--gold-400);
  box-shadow:none;border-left:3px solid var(--gold-500);padding-left:15px;
}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--gold-500);outline-offset:-2px}
.faq-accordion .accordion-button::after{
  content:"+";background-image:none;width:auto;height:auto;
  font-size:22px;font-weight:400;line-height:1;color:var(--gold-500);
  display:flex;align-items:center;justify-content:center;margin-left:auto;
  transition:transform .2s ease-out,color .2s ease-out;
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"−";transform:rotate(180deg);color:var(--gold-400)}
.faq-accordion .accordion-body{
  padding:0 8px 22px 15px;color:var(--text-2);font-size:15px;line-height:1.8;
}
.faq-cta{margin-top:30px}

/* ============ 立即开通 ============ */
.apply-panel{
  display:grid;grid-template-columns:6fr 5fr;gap:48px;align-items:center;
  padding:48px;border-radius:22px;
}
.apply-copy h2{margin-bottom:14px}
.apply-copy p{color:var(--text-2);margin-bottom:22px}
.apply-points{display:grid;gap:12px}
.apply-points li{
  position:relative;padding-left:22px;color:var(--text-2);font-size:15px;
}
.apply-points li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:3px;
  background:linear-gradient(140deg,var(--gold-400),var(--ember-500));
  box-shadow:0 0 12px var(--gold-glow);
}
.apply-form{display:grid;gap:16px}
.field{display:flex;flex-direction:column;gap:8px}
.field label{color:var(--text-2);font-size:14px}
.field input{
  height:48px;padding:0 16px;border-radius:var(--r-input);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--text-1);font-size:15px;
  transition:border-color .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.field input::placeholder{color:var(--text-3)}
.field input:hover{border-color:rgba(255,255,255,.16)}
.field input:focus{
  outline:none;border-color:var(--gold-500);
  box-shadow:0 0 0 4px rgba(242,169,59,.12);
  background:rgba(255,255,255,.06);
}
.form-note{color:var(--text-3);font-size:13px;line-height:1.7}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;z-index:1;margin-left:var(--sidebar-w);
  background:var(--bg-900);border-top:1px solid var(--line);
  padding:64px 0 32px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{padding:0 0 16px}
.footer-brand h3{font-size:16px;color:var(--text-1);margin-bottom:10px}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:1.8;max-width:300px;margin-bottom:18px}
.footer-contact{display:grid;gap:8px}
.footer-contact span{color:var(--text-3);font-size:13px;display:flex;align-items:center;gap:8px}
.footer-col h4{font-size:15px;color:var(--text-1);margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{
  color:var(--text-2);font-size:14px;display:inline-block;
  transition:color .2s ease-out,transform .2s ease-out;
}
.footer-col a:hover{color:var(--gold-400);transform:translateX(2px)}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p,.footer-bottom span{color:var(--text-3);font-size:13px}
.footer-bottom .record{display:flex;gap:16px;flex-wrap:wrap}

/* ============ 响应式 ============ */
@media (max-width:1399.98px){
  :root{--sidebar-w:220px}
}
@media (min-width:992px) and (max-width:1199.98px){
  :root{--sidebar-w:72px}
  .app-sidebar{padding:20px 12px;align-items:stretch}
  .brand{justify-content:center;padding:4px 0 20px}
  .brand-text{display:none}
  .nav-item{justify-content:center;padding:0;gap:0}
  .nav-item .nav-label{
    position:absolute;left:64px;top:50%;transform:translateY(-50%) scale(.96);
    display:block;white-space:nowrap;padding:6px 12px;border-radius:10px;
    background:rgba(6,10,18,.94);border:1px solid var(--line);
    color:var(--text-1);font-size:12px;line-height:1.4;
    opacity:0;pointer-events:none;z-index:80;
    transition:opacity .16s ease-out,transform .16s ease-out;
  }
  .nav-item:hover .nav-label,.nav-item:focus-visible .nav-label{opacity:1;transform:translateY(-50%) scale(1)}
  .side-tip{display:none}
  .side-cta{padding:0}
  .side-cta .cta-text{display:none}
}
@media (max-width:991.98px){
  .app-sidebar{display:none}
  .mobile-topbar{display:flex}
  .site-main{margin-left:0;padding-top:64px}
  .site-footer{margin-left:0}
  .hero{padding:56px 0 56px}
  .hero-inner{grid-template-columns:1fr;gap:36px;min-height:0;padding:0 24px}
  .hero-visual img{aspect-ratio:16/10;max-height:240px}
  .hero-glass{position:static;width:100%;max-width:none;margin-top:16px}
  .hero-visual::after{display:none}
  .section{padding:72px 0}
  .container{padding:0 24px}
  .steps{grid-template-columns:1fr}
  .steps::before{display:none}
  .ability{grid-template-columns:1fr;gap:32px}
  .case-grid{grid-template-columns:1fr}
  .case-card.major{grid-column:span 1;grid-row:span 1}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .apply-panel{grid-template-columns:1fr;gap:32px;padding:32px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
}
@media (max-width:767.98px){
  h1{font-size:clamp(26px,7vw,32px)}
  .container{padding:0 16px}
  .hero-inner{padding:0 16px}
  .section{padding:56px 0}
  .news-grid{grid-template-columns:1fr}
  .step-card,.case-card,.ability-item{padding:20px}
  .apply-panel{padding:24px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-gold,.hero-actions .btn-ghost{width:100%}
  .apply-form .btn-gold{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --bs-primary:#F2A93B;
  --bs-body-bg:#0B1220;
  --bs-body-color:#A9B6CC;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:18px;
  --bs-link-color:#F2A93B;
  --bs-link-hover-color:#FFC65C;
  --bs-font-sans-serif:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;

  --bg-900:#060A12;
  --bg-800:#0B1220;
  --bg-700:#101A2C;
  --gold-500:#F2A93B;
  --gold-400:#FFC65C;
  --gold-glow:rgba(242,169,59,.35);
  --ember-500:#E2703A;
  --jade-400:#34D3B0;
  --line:rgba(255,255,255,.08);
  --line-gold:rgba(242,169,59,.35);
  --text-1:#EAF0F8;
  --text-2:#A9B6CC;
  --text-3:#7B8AA0;
  --r-card:18px;
  --r-img:14px;
  --r-btn:14px;
  --r-input:12px;
  --shadow-card:0 20px 44px rgba(2,6,16,.50);
  --shadow-hover:0 26px 56px rgba(2,6,16,.62);
  --sidebar:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-left:var(--sidebar);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  background:
    radial-gradient(760px 420px at 88% -6%,rgba(242,169,59,.08),transparent 62%),
    radial-gradient(680px 400px at 10% 8%,rgba(30,58,110,.42),transparent 66%),
    var(--bg-800);
  min-height:100vh;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--gold-500);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--gold-400)}
h1,h2,h3,h4{color:var(--text-1);margin:0;line-height:1.25;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em}
:focus-visible{outline:2px solid var(--gold-500);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* 阅读进度条 */
.read-progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:1200;
  background:linear-gradient(90deg,var(--gold-500),var(--gold-400));box-shadow:0 0 14px var(--gold-glow)}

/* 左侧导航 */
.sidebar{
  position:fixed;inset:0 auto 0 0;width:var(--sidebar);z-index:1100;
  display:flex;flex-direction:column;
  padding:24px 16px;
  background:rgba(9,14,26,.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-right:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:12px;padding:6px 8px 22px;color:var(--text-1)}
.brand-mark{
  width:36px;height:36px;flex:none;border-radius:50%;
  background:radial-gradient(circle at 32% 28%,rgba(255,198,92,.95),rgba(242,169,59,.35) 46%,rgba(226,112,58,.25) 70%,transparent 72%);
  border:1px solid var(--line-gold);box-shadow:0 0 18px var(--gold-glow);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:11px;border-radius:50%;
  background:var(--bg-900);border:1px solid rgba(242,169,59,.5);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:700;color:var(--text-1)}
.brand-sub{font-size:12px;color:var(--text-3);letter-spacing:.14em}
.side-nav{display:flex;flex-direction:column;gap:6px;flex:1 1 auto;padding-top:8px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 12px;
  border-radius:12px;color:var(--text-2);font-size:15px;
  transition:background .2s ease-out,color .2s ease-out;
}
.nav-item svg{flex:none;opacity:.9}
.nav-item:hover{background:rgba(242,169,59,.10);color:var(--text-1)}
.nav-item.is-active{background:rgba(242,169,59,.14);color:var(--gold-400)}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;
  background:var(--gold-500);box-shadow:0 0 12px var(--gold-glow);
}
.side-foot{padding-top:16px;border-top:1px solid var(--line)}
.side-foot p{font-size:14px;color:var(--text-3);margin-bottom:12px}

/* 按钮 */
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,border-color .2s ease-out,filter .2s ease-out;
}
.btn-main{
  color:#10131B;background:linear-gradient(120deg,var(--gold-500),var(--ember-500));
  box-shadow:0 10px 30px var(--gold-glow);
}
.btn-main:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 28px var(--gold-glow);color:#10131B}
.btn-main:active{transform:none;box-shadow:0 6px 16px rgba(242,169,59,.28)}
.btn-ghost{color:var(--text-1);background:rgba(255,255,255,.02);border-color:rgba(255,255,255,.16)}
.btn-ghost:hover{border-color:rgba(242,169,59,.4);background:rgba(255,255,255,.06);color:var(--text-1)}
.btn-ghost:active{transform:none;background:rgba(255,255,255,.03)}
.btn-block{width:100%}
.link-gold{border-bottom:1px solid var(--gold-500);color:var(--gold-500)}
.link-gold:hover{border-bottom-width:2px;color:var(--gold-400)}

/* 移动端顶栏 */
.top-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;z-index:1150;
  align-items:center;justify-content:space-between;padding:0 16px;
  background:rgba(9,14,26,.86);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);
}
.top-bar .brand{padding:0}
.burger{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);color:var(--gold-500);display:inline-flex;
  align-items:center;justify-content:center;
}
.burger:hover{border-color:var(--line-gold);background:rgba(242,169,59,.10)}
.drawer{background:rgba(9,14,26,.97);color:var(--text-2);width:300px;border-right:1px solid var(--line)}
.drawer .drawer-inner{padding:20px 18px;display:flex;flex-direction:column;height:100%}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{
  width:38px;height:38px;border-radius:12px;border:1px solid var(--line-gold);
  background:transparent;color:var(--gold-500);
}

/* 主体 */
.main{padding:44px 0 96px}
.crumbs{font-size:14px;color:var(--text-3);display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:26px}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--gold-400)}
.crumbs .sep{opacity:.55}
.crumbs .current{color:var(--text-2);max-width:320px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.article-layout{display:flex;gap:40px;align-items:flex-start}
.toc{display:none;flex:none;width:200px;position:sticky;top:36px}
.toc h2{font-size:13px;letter-spacing:.16em;color:var(--text-3);font-weight:600;margin-bottom:14px}
.toc ol{display:flex;flex-direction:column;gap:10px;border-left:1px solid var(--line);padding-left:14px}
.toc a{font-size:13.5px;line-height:1.6;color:var(--text-3);display:block}
.toc a:hover{color:var(--gold-400)}
.toc a.is-current{color:var(--gold-500);font-weight:600}
.article{flex:1 1 auto;max-width:820px;min-width:0}

.badge-cat{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  font-size:12px;line-height:1;color:var(--gold-500);background:rgba(242,169,59,.12);
}
.badge-soft{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  font-size:12px;line-height:1;color:var(--jade-400);background:rgba(52,211,176,.12);
}
.article-head h1{font-size:clamp(30px,4vw,46px);line-height:1.2;margin:16px 0 18px}
.meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--text-3)}
.meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);opacity:.7}
.divider{height:1px;background:var(--line);margin:30px 0 8px}

/* 正文排版 */
.article-body{padding-top:22px;font-size:17px;line-height:1.9;color:var(--text-2);word-break:break-word}
.article-body > p:first-of-type{font-size:18px;color:#BCC8DB}
.article-body p{margin:0 0 1.15em}
.article-body h2{
  font-size:24px;line-height:1.35;color:var(--text-1);
  margin:40px 0 16px;padding-left:14px;border-left:3px solid var(--gold-500);
}
.article-body h3{font-size:20px;line-height:1.35;color:var(--text-1);margin:28px 0 12px}
.article-body h4{font-size:17px;color:var(--text-1);margin:22px 0 10px}
.article-body ul,.article-body ol{margin:0 0 1.15em;padding-left:22px}
.article-body ul li{list-style:disc;margin:.6em 0}
.article-body ol li{list-style:decimal;margin:.6em 0}
.article-body li::marker{color:var(--gold-500)}
.article-body a{color:var(--gold-500);border-bottom:1px solid rgba(242,169,59,.5)}
.article-body a:hover{color:var(--gold-400);border-bottom-width:2px}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;border-left:3px solid var(--gold-500);border-radius:0 var(--r-card) var(--r-card) 0;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  backdrop-filter:blur(14px);color:var(--text-1);box-shadow:0 0 22px rgba(242,169,59,.10) inset;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);border:1px solid var(--line);margin:22px 0}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13.5px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;overflow:hidden;border-radius:var(--r-img)}
.article-body thead th{
  text-align:left;color:var(--gold-500);font-weight:600;padding:12px 14px;
  border-bottom:1px solid var(--line-gold);white-space:nowrap;
}
.article-body tbody td{padding:12px 14px;border-bottom:1px solid var(--line);color:var(--text-2);vertical-align:top}
.article-body tbody tr:nth-child(odd) td{background:rgba(255,255,255,.03)}
.article-body hr{border:0;height:1px;background:var(--line);margin:32px 0}
.article-body code{background:rgba(255,255,255,.06);border-radius:6px;padding:2px 6px;font-size:14px;color:var(--gold-400)}

.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:220px;padding:32px;border-radius:var(--r-card);text-align:center;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.empty-state svg{opacity:.6;color:var(--gold-500)}
.empty-state p{color:var(--text-2);font-size:15px}

/* 继续浏览 */
.next-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:56px}
.next-card{
  display:block;padding:22px 24px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.next-card:hover{transform:translateY(-4px);border-color:var(--line-gold);box-shadow:var(--shadow-hover)}
.next-card span{font-size:12px;color:var(--text-3);letter-spacing:.1em}
.next-card strong{display:block;margin:8px 0 6px;font-size:17px;color:var(--text-1);font-weight:600}
.next-card p{font-size:14px;color:var(--text-2)}
.next-card .arrow{display:inline-block;margin-top:12px;color:var(--gold-500);font-size:14px}

/* 相关推荐 */
.rel{margin-top:72px;padding-top:40px;border-top:1px solid var(--line)}
.rel h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:8px}
.rel .rel-sub{font-size:14px;color:var(--text-3);margin-bottom:26px}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.rel-card{
  display:flex;gap:14px;padding:16px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,border-color .2s ease-out;
}
.rel-card:hover{transform:translateY(-4px);border-color:var(--line-gold)}
.rel-thumb{
  flex:none;width:88px;height:64px;border-radius:12px;overflow:hidden;
  background:var(--bg-700);border:1px solid var(--line);
}
.rel-thumb img{width:100%;height:100%;object-fit:cover}
.rel-card h3{font-size:16px;font-weight:600;line-height:1.45;color:var(--text-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card time{display:block;margin-top:8px;font-size:13px;color:var(--text-3)}
.back-row{margin-top:44px;display:flex;gap:14px;flex-wrap:wrap}
.back-row .btn-main,.back-row .btn-ghost{height:46px}

/* 页脚 */
.site-footer{
  background:var(--bg-900);border-top:1px solid var(--line);
  padding:64px 0 32px;margin-top:20px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-brand .brand{padding:0 0 18px}
.footer-brand h3{font-size:17px;margin-bottom:10px}
.footer-brand p{font-size:14px;color:var(--text-2);margin-bottom:16px;max-width:280px}
.footer-contact{display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--text-3)}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:16px;letter-spacing:.06em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:transform .2s ease-out,color .2s ease-out}
.footer-col a:hover{color:var(--gold-400);transform:translateX(2px)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .record{display:flex;gap:14px;align-items:center}

/* 响应式 */
@media (min-width:1200px){
  .toc{display:block}
}
@media (min-width:992px) and (max-width:1199px){
  :root{--sidebar:72px}
  .brand-text{display:none}
  .nav-label{display:none}
  .nav-item{justify-content:center;padding:0}
  .side-foot .btn-main{width:48px;padding:0;font-size:0}
  .side-foot .btn-main::after{content:"＋";font-size:20px}
  .side-foot p{display:none}
  .nav-item::after{
    content:attr(data-tip);position:absolute;left:64px;top:50%;transform:translateY(-50%) scale(.96);
    background:rgba(9,14,26,.95);border:1px solid var(--line);color:var(--text-1);
    font-size:12px;padding:6px 10px;border-radius:10px;white-space:nowrap;
    opacity:0;pointer-events:none;transition:opacity .18s ease-out;z-index:5;
  }
  .nav-item:hover::after{opacity:1;transform:translateY(-50%) scale(1)}
}
@media (max-width:991px){
  body{padding-left:0;padding-top:64px}
  .sidebar{display:none}
  .top-bar{display:flex}
  .container{padding:0 24px}
  .main{padding:32px 0 72px}
  .site-footer{padding-top:48px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .article-head h1{font-size:28px}
  .article-body{font-size:16.5px}
  .article-body h2{font-size:21px;margin-top:34px}
  .article-body > p:first-of-type{font-size:17px}
  .next-row{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .back-row .btn-main,.back-row .btn-ghost{width:100%}
  .article-body table{font-size:14px}
  .article-body thead th,.article-body tbody td{padding:10px}
}

/* roulang page: category1 */
:root{
  --bg-900:#060A12;
  --bg-800:#0B1220;
  --bg-700:#101A2C;
  --gold-500:#F2A93B;
  --gold-400:#FFC65C;
  --gold-glow:rgba(242,169,59,.35);
  --ember-500:#E2703A;
  --jade-400:#34D3B0;
  --indigo-600:rgba(30,58,110,.55);
  --line:rgba(255,255,255,.08);
  --line-gold:rgba(242,169,59,.35);
  --text-1:#EAF0F8;
  --text-2:#A9B6CC;
  --text-3:#7B8AA0;
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:14px;
  --radius-input:12px;
  --shadow-card:0 20px 44px rgba(2,6,16,.50);
  --shadow-hover:0 26px 56px rgba(2,6,16,.62);
  --sidebar-w:240px;

  /* 覆盖 Bootstrap 默认变量 */
  --bs-primary:#F2A93B;
  --bs-body-bg:#0B1220;
  --bs-body-color:#A9B6CC;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:14px;
  --bs-link-color:#F2A93B;
  --bs-link-hover-color:#FFC65C;
  --bs-font-sans-serif:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-800);
  color:var(--text-2);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 420px at 78% -6%, rgba(242,169,59,.08), transparent 70%),
    radial-gradient(760px 520px at 8% 26%, rgba(30,58,110,.14), transparent 72%);
}
img{max-width:100%;display:block;}
a{color:var(--gold-500);text-decoration:none;transition:color .2s ease-out,opacity .2s ease-out;}
a:hover{color:var(--gold-400);}
h1,h2,h3,h4{color:var(--text-1);margin:0;font-weight:700;letter-spacing:.01em;}
h1{font-size:clamp(30px,4vw,46px);line-height:1.2;}
h2{font-size:clamp(24px,2.6vw,32px);line-height:1.25;}
h3{font-size:20px;line-height:1.35;font-weight:600;}
p{margin:0 0 16px;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--gold-500);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em;}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:2000;
  background:var(--bg-700);color:var(--gold-400);
  padding:10px 16px;border-radius:var(--radius-btn);border:1px solid var(--line-gold);
}
.skip-link:focus{left:16px;top:16px;}

/* ============ 侧边导航 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  z-index:1040;
  padding:24px 16px 20px;
  display:flex;
  flex-direction:column;
  background:rgba(9,14,26,.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-right:1px solid var(--line);
  transition:width .2s ease-out;
}
.brand{
  display:flex;align-items:center;gap:12px;
  padding:8px 8px 20px;
  color:var(--text-1);
  text-decoration:none;
}
.brand:hover{color:var(--text-1);}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:50%;
  background:conic-gradient(from 210deg,#F2A93B,#FFC65C,#E2703A,#F2A93B);
  box-shadow:0 0 0 1px rgba(242,169,59,.4),0 8px 22px rgba(242,169,59,.28);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:11px;border-radius:50%;
  background:var(--bg-900);
  box-shadow:inset 0 0 0 1px rgba(242,169,59,.5);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;overflow:hidden;}
.brand-name{font-size:17px;font-weight:700;color:var(--text-1);white-space:nowrap;}
.brand-sub{font-size:12px;color:var(--text-3);white-space:nowrap;letter-spacing:.14em;}

.side-nav{display:flex;flex-direction:column;gap:6px;margin-top:6px;flex:1;}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;
  border-radius:12px;
  color:var(--text-2);
  font-size:15px;
  transition:background .2s ease-out,color .2s ease-out;
}
.nav-item svg{flex:0 0 18px;color:var(--text-3);transition:color .2s ease-out;}
.nav-item:hover{background:rgba(242,169,59,.10);color:var(--text-1);}
.nav-item:hover svg{color:var(--gold-400);}
.nav-item.is-active{
  background:rgba(242,169,59,.14);
  color:var(--gold-400);
}
.nav-item.is-active svg{color:var(--gold-500);}
.nav-item.is-active::before{
  content:"";position:absolute;left:-6px;top:9px;bottom:9px;width:3px;
  border-radius:999px;background:var(--gold-500);
  box-shadow:0 0 12px var(--gold-glow);
}

.side-foot{margin-top:18px;display:flex;flex-direction:column;gap:12px;}
.side-note{font-size:14px;color:var(--text-3);line-height:1.7;}

/* 折叠态（992-1199px） */
@media (min-width:992px) and (max-width:1199px){
  .sidebar{width:72px;padding:20px 10px 18px;align-items:center;}
  .brand{padding:6px 0 18px;justify-content:center;}
  .brand-text{display:none;}
  .side-nav{width:100%;align-items:center;}
  .nav-item{justify-content:center;padding:0;width:48px;}
  .nav-label{display:none;}
  .nav-item::after{
    content:attr(data-label);
    position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);
    background:rgba(9,14,26,.94);
    color:var(--text-1);
    font-size:12px;line-height:1;
    white-space:nowrap;
    padding:8px 10px;border-radius:8px;
    border:1px solid var(--line-gold);
    opacity:0;pointer-events:none;transition:opacity .18s ease-out;
    z-index:60;
  }
  .nav-item:hover::after{opacity:1;}
  .side-foot{width:100%;align-items:center;}
  .side-foot .btn-gold{padding:0 8px;width:48px;font-size:0;}
  .side-foot .btn-gold::after{content:"开通";font-size:13px;}
  .side-note{display:none;}
}

/* 移动端顶栏 */
.mobile-topbar{
  position:fixed;top:0;left:0;right:0;height:64px;z-index:1060;
  display:none;align-items:center;justify-content:space-between;
  padding:0 16px;
  background:rgba(9,14,26,.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.mobile-topbar .brand{padding:0;}
.mobile-topbar .brand-mark{width:32px;height:32px;flex:0 0 32px;}
.mobile-topbar .brand-mark::after{inset:9px;}
.mobile-topbar .brand-name{font-size:15px;}
.mobile-topbar .brand-sub{font-size:11px;}
.burger{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius:12px;color:var(--text-1);cursor:pointer;
  transition:border-color .2s ease-out,background .2s ease-out;
}
.burger:hover{border-color:var(--line-gold);background:rgba(255,255,255,.08);}

.drawer{
  background:rgba(9,14,26,.96)!important;
  backdrop-filter:blur(18px);
  border-right:1px solid var(--line)!important;
  color:var(--text-2);
  width:300px!important;
}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.drawer .btn-close{
  filter:invert(1) sepia(1) saturate(3) hue-rotate(-10deg);
  opacity:.75;border-radius:10px;
  border:1px solid var(--line-gold);
  padding:10px;
}
.drawer .btn-close:hover{opacity:1;}
.drawer-body{padding:18px 20px 28px;}
.drawer .nav-item{height:50px;font-size:16px;}
.drawer .nav-item::after{display:none;}

/* ============ 页面主体 ============ */
.main{
  position:relative;
  z-index:1;
  margin-left:var(--sidebar-w);
  padding:48px 32px 0;
}
.container-x{max-width:1200px;margin:0 auto;width:100%;}

/* 面包屑 */
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:14px;color:var(--text-3);margin-bottom:28px;
}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--gold-400);}
.crumb .sep{opacity:.5;}
.crumb .current{color:var(--text-2);}

/* 分类头 */
.cat-head{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:40px;align-items:end;
  padding:34px 30px;
  border-radius:22px;
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-card);
  position:relative;overflow:hidden;
}
.cat-head::after{
  content:"";position:absolute;right:-70px;top:-90px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(242,169,59,.16),transparent 68%);
  pointer-events:none;
}
.cat-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;
  color:var(--gold-400);text-transform:uppercase;
  margin-bottom:14px;
}
.cat-head .eyebrow::before{
  content:"";width:22px;height:1px;background:var(--gold-500);display:inline-block;
}
.cat-head h1{margin-bottom:14px;}
.cat-head h1 .thin{color:var(--gold-400);font-weight:700;}
.cat-head .lead{color:var(--text-2);font-size:16px;line-height:1.8;margin:0;max-width:640px;}
.cat-metrics{display:flex;flex-direction:column;gap:10px;align-items:flex-end;}
.metric-pill{
  display:inline-flex;align-items:center;gap:10px;
  padding:10px 16px;border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  font-size:13px;color:var(--text-2);white-space:nowrap;
}
.metric-pill b{color:var(--jade-400);font-size:15px;font-variant-numeric:tabular-nums;}
.metric-pill.gold b{color:var(--gold-400);}

/* 通用板块 */
.section{padding:88px 0 0;}
.section-head{margin-bottom:32px;max-width:720px;}
.section-head .kicker{
  display:inline-block;font-size:12px;letter-spacing:.14em;
  color:var(--gold-400);margin-bottom:12px;
}
.section-head p{margin:12px 0 0;color:var(--text-2);}

/* 左文右图 */
.split{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:44px;
  align-items:start;
}
.step-list{display:flex;flex-direction:column;gap:0;}
.step-item{
  display:grid;grid-template-columns:56px minmax(0,1fr);gap:20px;
  padding:24px 0;
  border-bottom:1px dashed rgba(255,255,255,.10);
  transition:background .2s ease-out;
}
.step-item:first-child{padding-top:0;}
.step-item:last-child{border-bottom:0;}
.step-item:hover{background:linear-gradient(90deg,rgba(242,169,59,.05),transparent 70%);}
.step-no{
  font-size:26px;font-weight:700;line-height:1;
  color:transparent;
  -webkit-text-stroke:1px rgba(242,169,59,.65);
  font-variant-numeric:tabular-nums;
  padding-top:2px;
}
.step-item h3{margin-bottom:8px;font-size:18px;}
.step-item p{margin:0;font-size:15px;line-height:1.85;color:var(--text-2);}

.figure-col{position:sticky;top:32px;}
.figure-card{
  position:relative;
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  aspect-ratio:3/4;
  background:
    linear-gradient(150deg,rgba(242,169,59,.10),rgba(11,18,32,.9)),
    var(--bg-700);
}
.figure-card img{
  width:100%;height:100%;object-fit:cover;
  opacity:.9;
}
.figure-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,.05) 35%,rgba(6,10,18,.86) 100%);
}
.figure-note{
  position:absolute;left:16px;right:16px;bottom:16px;z-index:2;
  padding:16px 18px;
  border-radius:var(--radius-card);
  border:1px solid rgba(255,255,255,.10);
  background:linear-gradient(160deg,rgba(255,255,255,.10),rgba(255,255,255,.03));
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.figure-note .fn-title{font-size:14px;color:var(--text-1);font-weight:600;margin-bottom:10px;}
.figure-note .fn-row{display:flex;gap:20px;}
.figure-note .fn-row div{font-size:12px;color:var(--text-3);}
.figure-note .fn-row b{display:block;font-size:20px;color:var(--gold-400);font-variant-numeric:tabular-nums;line-height:1.2;}

/* 对照信息带：宽度不等 */
.band{
  display:grid;
  grid-template-columns:1.15fr 1fr .85fr;
  gap:20px;
}
.band-card{
  padding:26px;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.band-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-gold);
  box-shadow:var(--shadow-hover);
}
.band-card .tag{
  display:inline-block;font-size:12px;line-height:1;
  padding:7px 12px;border-radius:999px;
  background:rgba(242,169,59,.12);color:var(--gold-400);
  margin-bottom:14px;
}
.band-card .tag.jade{background:rgba(52,211,176,.12);color:var(--jade-400);}
.band-card h3{font-size:17px;margin-bottom:10px;}
.band-card p{font-size:14px;line-height:1.8;color:var(--text-2);margin:0 0 14px;}
.band-card ul li{
  display:flex;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
  padding:8px 0;border-top:1px solid var(--line);
}
.band-card ul li b{color:var(--text-1);font-weight:600;font-variant-numeric:tabular-nums;}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:minmax(0,320px) minmax(0,1fr);gap:48px;align-items:start;}
.faq-side{position:sticky;top:32px;}
.faq-side h2{margin-bottom:14px;}
.faq-side p{font-size:15px;color:var(--text-2);margin-bottom:18px;}

.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:transparent;}
.accordion-item{
  background:transparent!important;
  border:0!important;
  border-bottom:1px solid var(--line)!important;
}
.accordion-item:first-of-type{border-top:1px solid var(--line)!important;}
.accordion-button{
  background:transparent!important;
  color:var(--text-1)!important;
  font-size:17px;font-weight:600;
  padding:18px 12px!important;
  box-shadow:none!important;
  transition:background .2s ease-out,color .2s ease-out;
}
.accordion-button:hover{color:var(--gold-400)!important;}
.accordion-button:not(.collapsed){
  color:var(--gold-400)!important;
  background:linear-gradient(90deg,rgba(242,169,59,.08),transparent 72%)!important;
  box-shadow:inset 3px 0 0 var(--gold-500)!important;
}
.accordion-button::after{
  background-image:none!important;
  content:"+";
  font-size:22px;line-height:1;color:var(--gold-500);
  width:auto;height:auto;
  display:flex;align-items:center;justify-content:center;
  transform:none!important;
  margin-left:auto;
}
.accordion-button:not(.collapsed)::after{content:"−";color:var(--gold-400);}
.accordion-body{
  font-size:15px;line-height:1.85;color:var(--text-2);
  padding:0 12px 20px!important;
}

/* CTA 条 */
.cta-band{
  position:relative;overflow:hidden;
  padding:44px 40px;
  border-radius:22px;
  border:1px solid var(--line-gold);
  background:
    linear-gradient(160deg,rgba(242,169,59,.12),rgba(255,255,255,.02)),
    var(--bg-700);
  box-shadow:var(--shadow-card);
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 2px,transparent 2px 26px);
  opacity:.5;
}
.cta-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,420px);
  gap:40px;align-items:center;
}
.cta-grid h2{margin-bottom:12px;}
.cta-grid p{margin:0;color:var(--text-2);font-size:15px;}
.cta-form{display:flex;flex-direction:column;gap:14px;}
.field label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px;}
.field input{
  width:100%;height:48px;
  padding:0 16px;
  border-radius:var(--radius-input);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text-1);
  font-size:15px;
  transition:border-color .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.field input::placeholder{color:var(--text-3);}
.field input:focus{
  outline:none;
  border-color:var(--gold-500);
  box-shadow:0 0 0 4px rgba(242,169,59,.12);
  background:rgba(255,255,255,.06);
}
.form-note{font-size:13px;color:var(--text-3);}

/* 按钮 */
.btn-gold{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border:0;border-radius:var(--radius-btn);
  background:linear-gradient(96deg,var(--gold-500),var(--ember-500));
  color:#10131B;font-size:15px;font-weight:700;
  cursor:pointer;
  box-shadow:0 10px 30px var(--gold-glow);
  transition:filter .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn-gold:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 28px var(--gold-glow);color:#10131B;}
.btn-gold:active{transform:none;box-shadow:0 6px 16px rgba(242,169,59,.28);}
.btn-gold:focus-visible{outline:2px solid var(--gold-500);outline-offset:2px;}
.btn-gold.block{width:100%;}

.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.16);
  background:transparent;
  color:var(--text-1);font-size:15px;font-weight:600;
  cursor:pointer;
  transition:border-color .2s ease-out,background .2s ease-out,transform .2s ease-out;
}
.btn-ghost:hover{border-color:rgba(242,169,59,.6);background:rgba(255,255,255,.06);color:var(--text-1);transform:translateY(-1px);}
.btn-ghost:active{transform:none;}
.btn-ghost:focus-visible{outline:2px solid var(--gold-500);outline-offset:2px;}

.link-gold{
  color:var(--gold-500);
  border-bottom:1px solid rgba(242,169,59,.55);
  padding-bottom:2px;
  font-weight:600;font-size:15px;
  transition:color .2s ease-out,border-color .2s ease-out;
}
.link-gold:hover{color:var(--gold-400);border-bottom-color:var(--gold-400);}

/* 页脚 */
.site-footer{
  position:relative;z-index:1;
  margin-top:96px;
  margin-left:var(--sidebar-w);
  background:var(--bg-900);
  border-top:1px solid var(--line);
  padding:64px 32px 32px;
}
.footer-grid{
  max-width:1200px;margin:0 auto;
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
}
.footer-brand .brand{padding:0 0 18px;}
.footer-brand h3{font-size:17px;margin-bottom:10px;}
.footer-brand p{font-size:14px;color:var(--text-2);margin:0 0 16px;max-width:320px;}
.footer-contact{display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--text-3);}
.footer-col h4{font-size:15px;color:var(--text-1);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{
  font-size:14px;color:var(--text-2);
  transition:color .2s ease-out,transform .2s ease-out;
  display:inline-block;
}
.footer-col a:hover{color:var(--gold-400);transform:translateX(2px);}
.footer-bottom{
  max-width:1200px;margin:48px auto 0;
  padding-top:22px;border-top:1px solid var(--line);
  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);}
.record{display:flex;gap:16px;font-size:13px;color:var(--text-3);}

/* 响应式 */
@media (max-width:1399px){
  :root{--sidebar-w:220px;}
  .main{padding:40px 24px 0;}
  .site-footer{padding:56px 24px 28px;}
}
@media (max-width:1199px){
  .split{grid-template-columns:1fr;gap:36px;}
  .figure-col{position:static;}
  .figure-card{aspect-ratio:16/10;}
  .band{grid-template-columns:1fr 1fr;}
  .band-card:last-child{grid-column:span 2;}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
  .faq-side{position:static;}
  .cta-grid{grid-template-columns:1fr;gap:28px;}
  .cat-head{grid-template-columns:1fr;align-items:start;gap:24px;}
  .cat-metrics{flex-direction:row;flex-wrap:wrap;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:991px){
  :root{--sidebar-w:0px;}
  .sidebar{display:none;}
  .mobile-topbar{display:flex;}
  .main{padding:88px 20px 0;margin-left:0;}
  .site-footer{margin-left:0;padding:48px 20px 24px;}
  .cat-head{padding:26px 22px;border-radius:18px;}
  .section{padding:64px 0 0;}
  .cta-band{padding:32px 24px;}
  .step-item{grid-template-columns:44px minmax(0,1fr);gap:16px;padding:20px 0;}
  .step-no{font-size:22px;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .main{padding:80px 16px 0;}
  .site-footer{padding:40px 16px 22px;margin-top:64px;}
  h1{font-size:clamp(26px,7vw,32px);}
  .section{padding:56px 0 0;}
  .band{grid-template-columns:1fr;}
  .band-card:last-child{grid-column:auto;}
  .band-card{padding:20px;}
  .figure-card{aspect-ratio:16/11;max-height:240px;}
  .figure-note{left:12px;right:12px;bottom:12px;padding:14px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-grid .btn-gold,.cta-grid .btn-ghost{width:100%;}
  .cat-metrics{flex-direction:column;align-items:stretch;}
  .metric-pill{justify-content:space-between;}
  .step-item{grid-template-columns:1fr;gap:8px;}
  .step-no{font-size:20px;}
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
:root{
  --bg-900:#060A12;
  --bg-800:#0B1220;
  --bg-700:#101A2C;
  --gold-500:#F2A93B;
  --gold-400:#FFC65C;
  --gold-glow:rgba(242,169,59,.35);
  --ember-500:#E2703A;
  --jade-400:#34D3B0;
  --line:rgba(255,255,255,.08);
  --line-gold:rgba(242,169,59,.35);
  --text-1:#EAF0F8;
  --text-2:#A9B6CC;
  --text-3:#7B8AA0;
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:14px;
  --radius-input:12px;
  --shadow-card:0 20px 44px rgba(2,6,16,.50);
  --shadow-card-hover:0 26px 56px rgba(2,6,16,.62);
  --sidebar-w:240px;
  --gutter:32px;
  --section-gap:104px;

  --bs-body-bg:var(--bg-800);
  --bs-body-color:var(--text-2);
  --bs-primary:var(--gold-500);
  --bs-border-color:var(--line);
  --bs-border-radius:var(--radius-card);
  --bs-link-color:var(--gold-500);
  --bs-link-hover-color:var(--gold-400);
  --bs-font-sans-serif:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --bs-body-font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}

/* ===== 基础重置 ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--bg-800);
  background-image:
    radial-gradient(720px 420px at 88% -6%,rgba(242,169,59,.08),transparent 70%),
    radial-gradient(680px 460px at 6% 22%,rgba(30,58,110,.14),transparent 72%);
  background-repeat:no-repeat;
  color:var(--text-2);
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--gold-500);text-decoration:none;transition:color .2s ease-out;}
a:hover{color:var(--gold-400);}
h1,h2,h3,h4{color:var(--text-1);margin:0;font-weight:700;line-height:1.25;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--gold-500);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ===== 布局骨架 ===== */
.app-shell{min-height:100vh;}
.main-wrap{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 var(--gutter);
}

/* ===== 左侧导航 ===== */
.sidebar{
  position:fixed;
  inset:0 auto 0 0;
  width:var(--sidebar-w);
  display:flex;
  flex-direction:column;
  padding:24px 16px 22px;
  background:rgba(9,14,26,.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-right:1px solid var(--line);
  z-index:1040;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:8px 10px 20px;
}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;
  border-radius:50%;
  background:radial-gradient(circle at 32% 30%,rgba(255,198,92,.95),rgba(226,112,58,.85) 58%,rgba(6,10,18,.9));
  box-shadow:0 0 0 1px var(--line-gold),0 8px 22px rgba(242,169,59,.28);
  position:relative;
}
.brand-mark::after{
  content:"";
  position:absolute;inset:9px;
  border-radius:50%;
  border:1.5px dashed rgba(6,10,18,.55);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{color:var(--text-1);font-size:16px;font-weight:700;letter-spacing:.02em;}
.brand-sub{color:var(--text-3);font-size:11px;letter-spacing:.24em;}
.side-nav{display:flex;flex-direction:column;gap:4px;flex:1 1 auto;}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  height:44px;
  padding:0 12px;
  border-radius:12px;
  color:var(--text-2);
  font-size:15px;
  transition:background .2s ease-out,color .2s ease-out;
}
.nav-item svg{flex:0 0 18px;color:currentColor;}
.nav-item:hover{background:rgba(242,169,59,.10);color:var(--text-1);}
.nav-item.is-active{background:rgba(242,169,59,.14);color:var(--gold-400);}
.nav-item.is-active::before{
  content:"";
  position:absolute;left:0;top:8px;bottom:8px;
  width:3px;border-radius:3px;
  background:var(--gold-500);
  box-shadow:0 0 12px var(--gold-glow);
}
.sidebar-foot{margin-top:18px;padding-top:18px;border-top:1px solid var(--line);}
.sidebar-foot .hint{font-size:14px;color:var(--text-3);margin-bottom:12px;}

/* ===== 按钮 ===== */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 26px;
  border:0;border-radius:var(--radius-btn);
  background:linear-gradient(120deg,var(--gold-500),var(--ember-500));
  color:#10131B;font-weight:600;font-size:15px;
  box-shadow:0 10px 30px var(--gold-glow),inset 0 1px 0 rgba(255,255,255,.35);
  cursor:pointer;
  transition:filter .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn-main:hover{filter:brightness(1.06);transform:translateY(-1px);color:#10131B;box-shadow:0 0 28px var(--gold-glow),inset 0 1px 0 rgba(255,255,255,.35);}
.btn-main:active{transform:translateY(0);box-shadow:0 6px 16px var(--gold-glow);}
.btn-full{width:100%;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 24px;
  border:1px solid rgba(255,255,255,.16);border-radius:var(--radius-btn);
  background:transparent;color:var(--text-1);font-weight:600;font-size:15px;
  transition:border-color .2s ease-out,background .2s ease-out,transform .2s ease-out;
}
.btn-ghost:hover{border-color:var(--line-gold);background:rgba(255,255,255,.06);color:var(--gold-400);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.text-link{
  color:var(--gold-500);
  border-bottom:1px solid var(--gold-500);
  font-weight:600;
  padding-bottom:1px;
  transition:color .2s ease-out,border-color .2s ease-out;
}
.text-link:hover{color:var(--gold-400);border-bottom-width:2px;border-color:var(--gold-400);}

/* ===== 移动端顶栏 ===== */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;
  height:64px;
  align-items:center;justify-content:space-between;
  padding:0 16px;
  background:rgba(9,14,26,.86);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  z-index:1050;
}
.topbar .brand{padding:0;}
.topbar-toggle{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-gold);border-radius:12px;
  background:transparent;color:var(--gold-400);
}
.offcanvas.side-drawer{
  background:rgba(9,14,26,.98);
  color:var(--text-2);
  border-right:1px solid var(--line);
  width:300px;
}
.side-drawer .btn-close{
  filter:invert(1) sepia(1) saturate(6) hue-rotate(340deg);
  opacity:.85;
}

/* ===== 面包屑 ===== */
.crumb{
  padding:36px 0 8px;
  font-size:14px;
  color:var(--text-3);
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--gold-400);}
.crumb .sep{color:rgba(255,255,255,.22);}
.crumb .current{color:var(--text-2);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ===== 分类头（居中） ===== */
.cat-head{
  text-align:center;
  padding:28px 0 56px;
  position:relative;
}
.cat-head::before{
  content:"";
  position:absolute;left:50%;top:-20px;transform:translateX(-50%);
  width:min(760px,92%);height:300px;
  background:
    radial-gradient(420px 200px at 50% 20%,rgba(242,169,59,.10),transparent 70%),
    repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 1px,transparent 1px 14px);
  mask-image:linear-gradient(180deg,#000 0%,transparent 82%);
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 82%);
  opacity:.5;
  pointer-events:none;
}
.cat-head > *{position:relative;}
.cat-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;
  color:var(--gold-400);
  background:rgba(242,169,59,.12);
  border-radius:999px;
  padding:7px 16px;
  margin-bottom:20px;
}
.cat-head h1{
  font-size:clamp(30px,4vw,46px);
  line-height:1.2;
  max-width:900px;
  margin:0 auto;
}
.cat-head .lead{
  max-width:620px;
  margin:18px auto 0;
  font-size:16px;
  color:var(--text-2);
}
.badge-row{
  display:flex;flex-wrap:wrap;justify-content:center;gap:10px;
  margin-top:26px;
}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;line-height:1;
  padding:8px 14px;border-radius:999px;
  background:rgba(242,169,59,.12);color:var(--gold-400);
}
.chip.jade{background:rgba(52,211,176,.12);color:var(--jade-400);}
.chip .num{font-size:13px;font-weight:700;}

/* ===== 玻璃卡 ===== */
.glass{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.glass:hover{border-color:var(--line-gold);transform:translateY(-4px);box-shadow:var(--shadow-card-hover),inset 0 1px 0 rgba(255,255,255,.06);}

/* ===== 三段不等宽卡片带 ===== */
.band{padding-bottom:var(--section-gap);}
.band-grid{
  display:grid;
  grid-template-columns:1.25fr 1fr 1fr;
  gap:22px;
}
.band-card{padding:20px;display:flex;flex-direction:column;gap:16px;}
.band-card .media{
  position:relative;
  aspect-ratio:16/10;
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(150deg,var(--bg-700),var(--bg-900));
}
.band-card .media img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease-out;}
.band-card:hover .media img{transform:scale(1.03);}
.band-card .media::after{
  content:"";
  position:absolute;inset:auto 0 0 0;height:52%;
  background:linear-gradient(180deg,transparent,rgba(4,8,16,.82));
  pointer-events:none;
}
.band-card h3{font-size:17px;line-height:1.4;font-weight:600;}
.band-card p{font-size:14px;line-height:1.8;color:var(--text-2);}
.band-card .meta{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
  padding-top:12px;border-top:1px solid var(--line);
}

/* ===== 参数对照表 ===== */
.spec-section{padding-bottom:var(--section-gap);}
.section-head{max-width:640px;margin-bottom:34px;}
.section-head h2{font-size:clamp(24px,2.6vw,32px);}
.section-head p{margin-top:12px;font-size:15px;color:var(--text-2);}
.table-shell{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  background:rgba(16,26,44,.55);
}
table.spec{
  width:100%;
  border-collapse:collapse;
  font-size:15px;
}
table.spec caption{
  caption-side:top;
  text-align:left;
  padding:20px 24px 6px;
  color:var(--text-3);
  font-size:13px;
}
table.spec th,table.spec td{
  padding:16px 24px;
  text-align:left;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
table.spec thead th{
  color:var(--gold-400);
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
  background:rgba(242,169,59,.05);
  border-bottom:1px solid var(--line-gold);
}
table.spec tbody tr:nth-child(even){background:rgba(255,255,255,.03);}
table.spec tbody tr:last-child td{border-bottom:0;}
table.spec td:first-child{color:var(--text-1);font-weight:600;}

/* ===== 双列问答 ===== */
.qa-section{padding-bottom:var(--section-gap);}
.qa-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:22px;
}
.qa-item{
  padding:26px;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  transition:border-color .2s ease-out,transform .2s ease-out;
}
.qa-item:hover{border-color:var(--line-gold);transform:translateY(-3px);}
.qa-item h3{
  display:flex;gap:10px;align-items:flex-start;
  font-size:17px;line-height:1.4;font-weight:600;
}
.qa-item h3::before{
  content:"";
  flex:0 0 8px;width:8px;height:8px;
  margin-top:8px;border-radius:2px;
  background:var(--gold-500);
  box-shadow:0 0 10px var(--gold-glow);
}
.qa-item p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--text-2);}

/* ===== 要点清单 ===== */
.point-section{padding-bottom:var(--section-gap);}
.point-list{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px 26px;
  counter-reset:pt;
}
.point-item{
  display:flex;gap:18px;
  padding:24px;
  border-top:1px solid var(--line);
}
.point-item .idx{
  font-size:28px;font-weight:700;line-height:1;
  color:var(--gold-500);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
  flex:0 0 auto;
  text-shadow:0 0 18px var(--gold-glow);
}
.point-item h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.point-item p{font-size:15px;color:var(--text-2);}

/* ===== CTA 条 ===== */
.cta-section{padding-bottom:96px;}
.cta-panel{
  position:relative;
  overflow:hidden;
  border-radius:22px;
  padding:44px 46px;
  border:1px solid var(--line-gold);
  background:
    radial-gradient(600px 260px at 12% 0%,rgba(242,169,59,.12),transparent 70%),
    linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
}
.cta-panel::before{
  content:"";
  position:absolute;inset:0;
  background:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 1px,transparent 1px 16px);
  opacity:.5;
  pointer-events:none;
}
.cta-inner{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);}
.cta-inner p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ===== 页脚 ===== */
.site-footer{
  margin-top:auto;
  background:var(--bg-900);
  border-top:1px solid var(--line);
  padding:64px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand .brand{padding:0 0 14px;}
.footer-brand h3{font-size:17px;margin-bottom:10px;}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:300px;}
.footer-contact{margin-top:18px;display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--text-3);}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-1);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .2s ease-out,transform .2s ease-out;}
.footer-col a:hover{color:var(--gold-400);transform:translateX(2px);}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .record{display:flex;gap:18px;flex-wrap:wrap;}

/* ===== 响应式 ===== */
@media (max-width:1399px){
  :root{--sidebar-w:220px;--gutter:28px;}
}
@media (max-width:1199px){
  :root{--sidebar-w:72px;}
  .sidebar{padding:20px 10px;}
  .sidebar .brand{padding:4px 0 18px;justify-content:center;}
  .brand-text{display:none;}
  .nav-item{justify-content:center;padding:0;}
  .nav-label{display:none;}
  .sidebar-foot .hint{display:none;}
  .btn-main{padding:0;font-size:13px;}
}
@media (max-width:991px){
  :root{--gutter:24px;--section-gap:72px;}
  .sidebar{display:none;}
  .topbar{display:flex;}
  .main-wrap{margin-left:0;padding-top:64px;}
  .band-grid{grid-template-columns:1fr 1fr;}
  .band-card:first-child{grid-column:1 / -1;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--gutter:16px;--section-gap:56px;}
  body{font-size:15px;}
  .band-grid{grid-template-columns:1fr;}
  .qa-grid{grid-template-columns:1fr;}
  .point-list{grid-template-columns:1fr;}
  .point-item{padding:20px 0;}
  .cta-panel{padding:28px 20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%;}
  .crumb .current{max-width:200px;}
  table.spec thead{display:none;}
  table.spec,table.spec tbody,table.spec tr,table.spec td{display:block;width:100%;}
  table.spec tr{
    padding:16px 18px;
    border-bottom:1px solid var(--line);
  }
  table.spec tbody tr:nth-child(even){background:rgba(255,255,255,.03);}
  table.spec td{
    display:flex;justify-content:space-between;gap:16px;
    padding:7px 0;border:0;
    font-size:14px;
  }
  table.spec td::before{
    content:attr(data-label);
    color:var(--text-3);
    font-size:13px;
    flex:0 0 auto;
  }
  table.spec td:first-child{font-size:16px;margin-bottom:6px;}
  table.spec td:first-child::before{display:none;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}