/* roulang page: index */
:root{
  --bg:#070B14;
  --bg-soft:#0C1220;
  --bg-elev:#111A2B;
  --brand:#23E0C0;
  --brand-600:#17C4A8;
  --brand-100:#C7FFF5;
  --accent:#FF3D8B;
  --gold:#FFC24B;
  --t1:#E9EEF7;
  --t2:#A9B6CB;
  --t3:#6C7A91;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --ok:#34D399;
  --warn:#F59E0B;
  --err:#F87171;
  --r-card:20px;
  --r-sm:14px;
  --r-pill:999px;
  --sh:0 12px 32px rgba(0,0,0,.45);
  --glass:rgba(255,255,255,.045);
  --font-num:"Barlow","Space Grotesk",ui-monospace,SFMono-Regular,Menlo,monospace;
  --nav-h:72px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--bg);
  background-image:radial-gradient(rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:32px 32px;
  color:var(--t1);
  font-family:-apple-system,BlinkMacSystemFont,"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,
body::after{
  content:"";
  position:fixed;
  z-index:-1;
  pointer-events:none;
  border-radius:50%;
}
body::before{
  width:1100px;height:1100px;
  top:-420px;left:50%;
  transform:translateX(-50%);
  background:radial-gradient(circle,rgba(35,224,192,.16) 0%,rgba(35,224,192,0) 68%);
  filter:blur(110px);
}
body::after{
  width:900px;height:900px;
  top:420px;right:-320px;
  background:radial-gradient(circle,rgba(255,61,139,.11) 0%,rgba(255,61,139,0) 68%);
  filter:blur(120px);
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-100)}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1400px){.container{max-width:1320px}}

/* ---------- 通用文本 ---------- */
.sec{padding:88px 0;position:relative}
.sec-sm{padding:64px 0}
.sec-head{margin-bottom:44px;max-width:760px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--brand);font-weight:600;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(35,224,192,.1);
  border:1px solid rgba(35,224,192,.3);
  margin-bottom:16px;
}
.eyebrow.rose{color:var(--accent);background:rgba(255,61,139,.1);border-color:rgba(255,61,139,.3)}
.eyebrow.gold{color:var(--gold);background:rgba(255,194,75,.1);border-color:rgba(255,194,75,.3)}
h1{font-size:clamp(30px,5vw,52px);line-height:1.2;font-weight:800;letter-spacing:-.01em}
h2{font-size:clamp(24px,3.4vw,36px);line-height:1.3;font-weight:700;letter-spacing:-.01em}
h3{font-size:20px;line-height:1.5;font-weight:600}
.lead{color:var(--t2);font-size:17px;line-height:1.85}
.muted{color:var(--t3);font-size:13.5px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- 导航 ---------- */
.site-nav{
  position:sticky;top:0;z-index:1030;
  height:var(--nav-h);
  display:flex;align-items:center;
  background:rgba(7,11,20,.72);
  border-bottom:1px solid transparent;
  transition:height .22s ease,background .22s ease,border-color .22s ease,backdrop-filter .22s ease;
}
.site-nav.scrolled{
  height:60px;
  background:rgba(10,15,26,.86);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.logo{display:flex;align-items:center;gap:10px;color:var(--t1);font-weight:700;letter-spacing:.02em;font-size:18px}
.logo:hover{color:var(--t1)}
.logo-mark{
  width:34px;height:34px;border-radius:11px;flex:none;
  background:linear-gradient(135deg,var(--brand),#1AB8E8);
  box-shadow:0 6px 18px rgba(35,224,192,.28),inset 0 1px 0 rgba(255,255,255,.35);
  display:flex;align-items:center;justify-content:center;
  color:#04121A;font-size:15px;font-weight:800;
}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  position:relative;
  color:var(--t2);
  font-size:15px;
  padding:10px 14px;
  border-radius:10px;
  min-height:44px;
  display:inline-flex;align-items:center;
  transition:color .16s ease,background .16s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .16s ease;
}
.nav-links a:hover{color:var(--t1);background:rgba(255,255,255,.04)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--brand)}
.nav-links a.active::after{transform:scaleX(1)}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--glass);color:var(--t1);
  align-items:center;justify-content:center;font-size:17px;
}
.nav-mobile{
  display:none;
  position:absolute;left:0;right:0;top:100%;
  background:rgba(17,26,43,.98);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  padding:14px 24px 20px;
}
.nav-mobile.open{display:block}
.nav-mobile a{
  display:block;padding:13px 4px;color:var(--t2);font-size:15px;
  border-bottom:1px solid var(--line);
}
.nav-mobile a:last-child{border-bottom:0}
.nav-mobile a.active{color:var(--brand)}
@media (max-width:991px){
  .nav-links,.nav-cta .btn{display:none}
  .nav-toggle{display:inline-flex}
}

/* ---------- 按钮 ---------- */
.btn{
  border-radius:var(--r-sm);
  font-weight:600;
  font-size:15px;
  padding:12px 22px;
  min-height:44px;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;
  transition:all .18s cubic-bezier(.22,.61,.36,1);
}
.btn:focus,
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:3px;box-shadow:none}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),#1AB8E8);
  color:#04121A;
  font-weight:700;
  box-shadow:0 8px 24px rgba(35,224,192,.28),0 0 0 1px rgba(35,224,192,.5);
}
.btn-primary:hover{
  color:#04121A;
  filter:brightness(1.08);
  box-shadow:0 10px 32px rgba(35,224,192,.42),0 0 0 1px rgba(35,224,192,.7);
  transform:translateY(-1px);
}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  border-color:rgba(35,224,192,.42);
  color:var(--brand);
}
.btn-ghost:hover{background:rgba(255,255,255,.08);color:var(--brand-100);border-color:rgba(35,224,192,.7)}
.btn-plain{
  background:transparent;border-color:var(--line);color:var(--t2);
}
.btn-plain:hover{color:var(--t1);border-color:var(--line-strong);background:rgba(255,255,255,.04)}
.btn-sm{padding:9px 16px;font-size:14px;min-height:40px}

/* ---------- 胶囊标签 ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;line-height:1.5;
  background:rgba(35,224,192,.12);color:var(--brand);
  border:1px solid rgba(35,224,192,.3);
}
.pill.rose{background:rgba(255,61,139,.12);color:#FF7FB4;border-color:rgba(255,61,139,.32)}
.pill.gold{background:rgba(255,194,75,.12);color:var(--gold);border-color:rgba(255,194,75,.34)}
.pill.grey{background:rgba(255,255,255,.06);color:var(--t2);border-color:var(--line)}

/* ---------- 玻璃卡 ---------- */
.glass{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh),inset 0 1px 0 rgba(255,255,255,.06);
}

/* ---------- Hero ---------- */
.hero{padding:72px 0 64px;position:relative}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero h1{margin:18px 0 20px}
.hero h1 .hl{
  background:linear-gradient(120deg,var(--brand),#7FF3E2);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 26px}
.trust-tags{display:flex;flex-wrap:wrap;gap:10px}
.hero-visual{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid rgba(35,224,192,.28);box-shadow:var(--sh)}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(7,11,20,.94) 4%,rgba(7,11,20,.25) 52%,rgba(7,11,20,.05) 100%);
}
.hero-visual .hv-caption{
  position:absolute;left:22px;right:22px;bottom:20px;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
@media (max-width:991px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-visual img{aspect-ratio:16/9;height:220px}
}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;top:60px;z-index:1020;
  padding:10px 0;
  background:rgba(7,11,20,.82);
  backdrop-filter:blur(14px) saturate(140%);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;scrollbar-width:none}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-scroll a{
  flex:none;
  padding:9px 18px;border-radius:var(--r-pill);
  font-size:14px;color:var(--t2);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  min-height:44px;display:inline-flex;align-items:center;
  transition:all .16s ease;
}
.anchor-scroll a:hover{color:var(--t1);border-color:var(--line-strong)}
.anchor-scroll a.active{
  color:var(--brand);
  border-color:rgba(35,224,192,.45);
  background:rgba(35,224,192,.1);
}

/* ---------- 权益对比表 ---------- */
.table-wrap{
  overflow-x:auto;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh),
}
.cmp-table{
  width:100%;border-collapse:separate;border-spacing:0;min-width:760px;
}
.cmp-table th,.cmp-table td{
  padding:18px 20px;
  border-bottom:1px solid var(--line);
  font-size:15px;
  text-align:left;
  vertical-align:middle;
}
.cmp-table thead th{
  position:sticky;top:0;z-index:3;
  background:rgba(12,18,32,.96);
  backdrop-filter:blur(14px);
  font-size:15px;font-weight:700;color:var(--t1);
  border-bottom:1px solid var(--line-strong);
  white-space:nowrap;
}
.cmp-table thead th span.plan-note{display:block;font-size:12.5px;font-weight:500;color:var(--t3);letter-spacing:.02em}
.cmp-table tbody tr{transition:background .16s ease}
.cmp-table tbody tr:hover{background:rgba(255,255,255,.045)}
.cmp-table td:first-child,
.cmp-table th:first-child{
  position:sticky;left:0;z-index:2;
  background:rgba(9,13,23,.96);
  color:var(--t1);font-weight:600;
  border-right:1px solid var(--line);
  min-width:180px;
}
.cmp-table thead th:first-child{z-index:4}
.cmp-table .col-hot{
  background:rgba(35,224,192,.06);
  border-left:1px solid rgba(35,224,192,.28);
  border-right:1px solid rgba(35,224,192,.28);
}
.cmp-table tbody tr:hover .col-hot{background:rgba(35,224,192,.1)}
.cmp-table thead th.col-hot{background:rgba(20,45,52,.96);color:var(--brand-100)}
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table .yes{color:var(--brand);font-weight:700}
.cmp-table .no{color:var(--t3)}
.cmp-table .val{font-family:var(--font-num);color:var(--t1);font-size:14.5px}
thead th.col-hot .badge-gold{
  display:inline-flex;align-items:center;gap:6px;
  margin-left:10px;padding:4px 10px;border-radius:var(--r-pill);
  font-size:11.5px;font-weight:700;letter-spacing:.06em;
  background:rgba(255,194,75,.16);color:var(--gold);
  border:1px solid rgba(255,194,75,.4);
}

/* ---------- 等级亮点 ---------- */
.level-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
.level-main{
  position:relative;
  padding:38px 36px;
  border-radius:var(--r-card);
  border:1px solid rgba(35,224,192,.42);
  background:linear-gradient(160deg,rgba(35,224,192,.12),rgba(255,255,255,.04) 55%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:0 18px 48px rgba(35,224,192,.16),inset 0 1px 0 rgba(255,255,255,.08);
  overflow:hidden;
}
.level-main::after{
  content:"";position:absolute;width:320px;height:320px;right:-120px;top:-140px;border-radius:50%;
  background:radial-gradient(circle,rgba(35,224,192,.28),rgba(35,224,192,0) 70%);
  filter:blur(40px);
}
.level-crest{
  width:60px;height:60px;border-radius:18px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-weight:700;font-size:20px;
  color:#2A1B00;
  background:linear-gradient(140deg,#FFE1A0,var(--gold));
  box-shadow:0 10px 26px rgba(255,194,75,.3);
  margin-bottom:22px;
}
.level-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.level-card{
  padding:26px 26px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh);
  transition:border-color .18s ease,transform .18s ease;
}
.level-card:hover{border-color:rgba(35,224,192,.34);transform:translateY(-2px)}
.level-list{margin-top:20px;display:grid;gap:12px}
.level-list li{display:flex;gap:10px;color:var(--t2);font-size:15px;line-height:1.7}
.level-list li i{color:var(--brand);font-size:13px;margin-top:7px}
.level-cap{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-num);font-size:13px;letter-spacing:.1em;
  color:var(--t3);text-transform:uppercase;
}
@media (max-width:991px){.level-grid{grid-template-columns:1fr}}

/* ---------- 内容橱窗 ---------- */
.shelf-grid{display:grid;grid-template-columns:6fr 6fr;gap:32px;align-items:start}
.shelf-main{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh);
}
.shelf-main img{width:100%;aspect-ratio:16/10;object-fit:cover}
.shelf-main .shelf-tag{position:absolute;left:20px;top:20px;z-index:2}
.shelf-main .shelf-caption{
  position:absolute;left:0;right:0;bottom:0;padding:26px 24px 22px;
  background:linear-gradient(to top,rgba(7,11,20,.95),rgba(7,11,20,0));
}
.shelf-mini{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.mini-card{
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:var(--glass);
  overflow:hidden;
  transition:transform .18s ease,border-color .18s ease;
}
.mini-card:hover{transform:translateY(-4px);border-color:rgba(35,224,192,.35)}
.mini-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.mini-card .mini-body{padding:14px 16px 18px}
.mini-card h3{font-size:15.5px;line-height:1.5;margin-bottom:6px}
.mini-card p{font-size:13px;color:var(--t3);line-height:1.65}
@media (max-width:991px){
  .shelf-grid{grid-template-columns:1fr}
  .shelf-mini{grid-template-columns:1fr 1fr}
}
@media (max-width:520px){.shelf-mini{grid-template-columns:1fr}}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:6fr 6fr;gap:24px}
.news-lead{
  position:relative;display:flex;flex-direction:column;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  border-left:3px solid var(--brand);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  overflow:hidden;
  box-shadow:var(--sh);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.news-lead:hover{transform:translateY(-4px);border-color:rgba(35,224,192,.35)}
.news-lead img{width:100%;aspect-ratio:16/9;object-fit:cover}
.news-lead .nl-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-lead h3{font-size:21px;line-height:1.5}
.news-mini-wrap{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-content:start}
.news-mini{
  display:block;border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  overflow:hidden;
  box-shadow:var(--sh);
  transition:transform .2s ease,border-color .2s ease;
  position:relative;
}
.news-mini:hover{transform:translateY(-4px);border-color:rgba(35,224,192,.35)}
.news-mini img{width:100%;aspect-ratio:16/10;object-fit:cover}
.news-mini .nm-body{padding:16px 18px 18px}
.news-mini h3{font-size:15.5px;line-height:1.55;color:var(--t1);margin:8px 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-mini p{font-size:13px;color:var(--t2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-mini .nm-time{font-size:12.5px;color:var(--t3);margin-top:10px}
.news-lead p{font-size:14.5px;color:var(--t2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--t3);flex-wrap:wrap}
.card-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--t3)}
.news-empty{
  grid-column:1/-1;
  padding:56px 24px;text-align:center;
  border:1px dashed var(--line-strong);border-radius:var(--r-card);
  background:rgba(255,255,255,.02);
}
.news-empty i{font-size:26px;color:var(--brand);margin-bottom:14px;display:block}
.news-empty p{color:var(--t2);margin-bottom:18px}
@media (max-width:991px){
  .news-grid{grid-template-columns:1fr}
  .news-mini-wrap{grid-template-columns:1fr 1fr}
}
@media (max-width:575px){.news-mini-wrap{grid-template-columns:1fr}}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card) !important;
  margin-bottom:14px;
  overflow:hidden;
  backdrop-filter:blur(14px) saturate(140%);
}
.faq-acc .accordion-button{
  position:relative;
  background:transparent;
  color:var(--t1);
  font-size:16.5px;
  font-weight:600;
  padding:22px 62px 22px 24px;
  border:0;
  box-shadow:none !important;
  border-radius:var(--r-card) !important;
  line-height:1.6;
  transition:background .2s ease,color .2s ease;
}
.faq-acc .accordion-button:not(.collapsed){
  color:var(--brand-100);
  background:rgba(35,224,192,.07);
  box-shadow:inset 3px 0 0 var(--brand) !important;
}
.faq-acc .accordion-button::before,
.faq-acc .accordion-button::after{
  content:"";position:absolute;right:26px;top:50%;
  width:14px;height:2px;background:var(--brand);border-radius:2px;
  background-image:none;transform-origin:center;
  transition:transform .2s ease,opacity .2s ease;
}
.faq-acc .accordion-button::before{transform:translateY(-50%)}
.faq-acc .accordion-button::after{transform:translateY(-50%) rotate(90deg)}
.faq-acc .accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(0deg);opacity:0}
.faq-acc .accordion-body{
  padding:0 26px 24px 24px;
  color:var(--t2);
  font-size:15px;
  line-height:1.85;
  border-left:2px solid var(--brand);
  background:rgba(255,255,255,.03);
}
.faq-acc .accordion-button:focus-visible{outline:2px solid var(--brand);outline-offset:-2px}

/* ---------- CTA + 表单 ---------- */
.cta-grid{display:grid;grid-template-columns:6fr 6fr;gap:36px;align-items:start}
.cta-points{margin-top:24px;display:grid;gap:14px}
.cta-points li{display:flex;gap:12px;color:var(--t2);font-size:15.5px}
.cta-points li i{color:var(--brand);margin-top:8px;font-size:13px}
.form-card{padding:32px 30px}
.form-label{font-size:13.5px;color:var(--t2);font-weight:600;margin-bottom:8px;display:block}
.form-control,.form-select{
  width:100%;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  color:var(--t1);
  font-size:15px;
  padding:13px 16px;
  min-height:46px;
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.form-control::placeholder{color:var(--t3)}
.form-control:focus,.form-select:focus{
  background:rgba(255,255,255,.07);
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(35,224,192,.18);
  color:var(--t1);
  outline:none;
}
.form-select{
  appearance:none;
  background-image:linear-gradient(45deg,transparent 50%,var(--brand) 50%),linear-gradient(135deg,var(--brand) 50%,transparent 50%);
  background-position:calc(100% - 20px) 50%,calc(100% - 14px) 50%;
  background-size:6px 6px,6px 6px;
  background-repeat:no-repeat;
}
.form-select option{background:#0C1220;color:var(--t1)}
.form-control.is-invalid,.form-select.is-invalid{border-color:var(--err);box-shadow:0 0 0 3px rgba(248,113,113,.16)}
.err-tip{font-size:13px;color:var(--err);margin-top:6px;display:none}
.err-tip.show{display:block}
.form-note{font-size:12.5px;color:var(--t3);margin-top:14px;line-height:1.7}
.form-note a{color:var(--t2);text-decoration:underline}
.form-note a:hover{color:var(--brand)}
@media (max-width:991px){.cta-grid{grid-template-columns:1fr}}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-soft);
  border-top:1px solid var(--line);
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.3fr;gap:36px}
.footer-brand p{color:var(--t3);font-size:13.5px;line-height:1.8;margin-top:16px;max-width:320px}
.footer-col h4{font-size:14px;color:var(--t1);font-weight:700;margin-bottom:16px;letter-spacing:.02em}
.footer-col li{margin-bottom:10px}
.footer-col a{color:var(--t2);font-size:14px}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:48px;
  padding:22px 0;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--t3);
}
.footer-bottom a{color:var(--t3)}
.footer-bottom a:hover{color:var(--brand)}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:575px){.footer-grid{grid-template-columns:1fr}}

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

/* roulang page: article */
:root{
  --bg:#070B14;
  --bg-soft:#0C1220;
  --bg-elev:#111A2B;
  --brand:#23E0C0;
  --brand-600:#17C4A8;
  --brand-100:#C7FFF5;
  --accent:#FF3D8B;
  --gold:#FFC24B;
  --t1:#E9EEF7;
  --t2:#A9B6CB;
  --t3:#6C7A91;
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.045);
  --ok:#34D399;
  --warn:#F59E0B;
  --err:#F87171;
  --r-lg:20px;
  --r-md:14px;
  --r-pill:999px;
  --shadow:0 12px 32px rgba(0,0,0,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    radial-gradient(680px 680px at 88% 78%, rgba(35,224,192,.14), transparent 70%),
    radial-gradient(620px 620px at 6% 8%, rgba(255,61,139,.10), transparent 70%),
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size:100% 100%, 100% 100%, 32px 32px, 32px 32px;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--brand-100);}
p{margin:0 0 1em;}
h1,h2,h3,h4{margin:0;color:var(--t1);letter-spacing:.01em;}
ul,ol{padding-left:1.25em;}
button,input,select,textarea{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}
.container{max-width:1200px;padding:0 24px;position:relative;z-index:2;}
@media (min-width:1400px){.container{max-width:1320px;}}

/* ============ Header / Nav ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.site-header.is-stuck{
  background:rgba(12,18,32,.86);
  border-bottom-color:var(--line);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  min-height:72px;gap:20px;
  transition:min-height .2s var(--ease);
}
.site-header.is-stuck .nav-wrap{min-height:60px;}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  color:var(--t1);font-weight:700;letter-spacing:.02em;font-size:18px;
}
.logo:hover{color:var(--t1);}
.logo-mark{
  width:36px;height:36px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),#1AB8E8);
  color:#04121A;font-weight:800;font-size:14px;letter-spacing:.04em;
  box-shadow:0 0 0 1px rgba(35,224,192,.5),0 8px 20px rgba(35,224,192,.25);
  font-family:"Space Grotesk",Barlow,sans-serif;
}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  position:relative;
  display:inline-flex;align-items:center;
  min-height:44px;padding:0 14px;
  color:var(--t2);font-size:15px;font-weight:500;
  border-radius:10px;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:8px;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .16s var(--ease);
}
.nav-links a:hover{color:var(--t1);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--brand);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);color:var(--t1);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t1);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t1);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ============ Buttons ============ */
.btn-glow,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 22px;border-radius:var(--r-md);
  font-weight:700;font-size:15px;line-height:1;
  transition:all .18s var(--ease);border:1px solid transparent;cursor:pointer;
}
.btn-glow{
  background:linear-gradient(135deg,var(--brand),#1AB8E8);
  color:#04121A;
  box-shadow:0 8px 24px rgba(35,224,192,.28),0 0 0 1px rgba(35,224,192,.5);
}
.btn-glow:hover{
  color:#04121A;filter:brightness(1.08);transform:translateY(-1px);
  box-shadow:0 10px 32px rgba(35,224,192,.34),0 0 0 1px rgba(35,224,192,.6);
}
.btn-glow:active{transform:translateY(0);filter:brightness(.98);}
.btn-ghost{
  background:var(--glass);color:var(--brand);
  border-color:rgba(35,224,192,.35);
  backdrop-filter:blur(14px) saturate(140%);
}
.btn-ghost:hover{background:rgba(255,255,255,.08);color:var(--brand-100);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:11px;}

/* ============ Glass card ============ */
.glass{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
}

/* ============ Breadcrumb ============ */
.crumb-bar{padding:24px 0 4px;font-size:13px;color:var(--t3);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0;}
.crumb li{display:flex;align-items:center;gap:8px;max-width:100%;}
.crumb li+li::before{content:"/";color:rgba(255,255,255,.18);}
.crumb a{color:var(--t3);}
.crumb a:hover{color:var(--brand);}
.crumb .current{color:var(--t2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:min(52vw,420px);}

/* ============ Article head ============ */
.article-head{padding:26px 0 34px;}
.cat-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.12em;font-weight:600;
  color:var(--brand);background:rgba(35,224,192,.12);
  border:1px solid rgba(35,224,192,.3);
}
.cat-pill .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);}
.article-head h1{
  margin:18px 0 14px;
  font-size:clamp(28px,4.2vw,46px);line-height:1.25;font-weight:800;
  letter-spacing:.005em;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--t3);
}
.meta-row .sep{color:rgba(255,255,255,.2);}
.meta-row .num{font-family:"Space Grotesk",Barlow,sans-serif;letter-spacing:.04em;}

/* ============ Layout ============ */
.layout{padding-bottom:88px;}
.article-body{
  padding:34px 34px 38px;
}
.article-body h2{
  position:relative;
  margin:2.1em 0 .8em;padding-left:16px;
  font-size:clamp(21px,2.4vw,28px);font-weight:700;line-height:1.36;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;
  border-radius:3px;background:linear-gradient(180deg,var(--brand),rgba(35,224,192,.2));
}
.article-body h2:first-child{margin-top:0;}
.article-body h3{
  margin:1.7em 0 .6em;font-size:19px;font-weight:600;color:var(--t1);
}
.article-body p{margin:0 0 1.15em;color:var(--t2);line-height:1.9;}
.article-body strong{color:var(--t1);}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:0;list-style:none;}
.article-body ul li{
  position:relative;padding-left:20px;margin-bottom:.6em;color:var(--t2);line-height:1.85;
}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:3px;
  background:rgba(35,224,192,.75);
}
.article-body ol{counter-reset:li;padding-left:0;}
.article-body ol li{
  position:relative;padding-left:32px;margin-bottom:.6em;color:var(--t2);counter-increment:li;
}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.25em;
  width:22px;height:22px;border-radius:8px;display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:var(--brand);
  background:rgba(35,224,192,.12);border:1px solid rgba(35,224,192,.3);
  font-family:"Space Grotesk",Barlow,sans-serif;
}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;
  border-left:3px solid var(--brand);
  background:var(--glass);border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--t2);font-size:15px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  border-radius:var(--r-md);margin:1.6em auto;max-width:100%;height:auto;
}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--t3);text-align:center;margin-top:10px;}
.article-body a{
  color:var(--brand);text-decoration:underline;text-decoration-style:dashed;
  text-underline-offset:4px;
}
.article-body a:hover{text-decoration-style:solid;color:var(--brand-100);}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:14px;}
.article-body th,.article-body td{
  border:1px solid var(--line);padding:10px 14px;text-align:left;color:var(--t2);
}
.article-body th{background:rgba(255,255,255,.05);color:var(--t1);font-weight:600;}
.article-body code{
  background:rgba(255,255,255,.06);padding:2px 7px;border-radius:6px;
  font-size:14px;color:var(--brand-100);
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0;}

/* ============ Sidebar ============ */
.side-sticky{position:sticky;top:96px;}
.side-card{padding:22px 22px 20px;margin-bottom:20px;}
.side-title{
  display:flex;align-items:center;gap:10px;
  font-size:14px;font-weight:700;color:var(--t1);letter-spacing:.04em;
  margin-bottom:16px;
}
.side-title::before{
  content:"";width:4px;height:14px;border-radius:2px;background:var(--brand);
}
.mini-post{
  display:flex;gap:12px;padding:10px;border-radius:var(--r-md);
  border:1px solid transparent;transition:all .18s var(--ease);
}
.mini-post:hover{background:rgba(255,255,255,.05);border-color:rgba(35,224,192,.28);}
.mini-thumb{
  width:64px;height:64px;flex:0 0 64px;border-radius:12px;overflow:hidden;
  background:var(--bg-elev);
}
.mini-thumb img{width:100%;height:100%;object-fit:cover;}
.mini-post h4{
  font-size:14px;font-weight:600;line-height:1.5;color:var(--t1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:4px;
}
.mini-post .mini-time{font-size:12px;color:var(--t3);font-family:"Space Grotesk",Barlow,sans-serif;}
.cat-list{list-style:none;margin:0;padding:0;}
.cat-list li+li{border-top:1px solid var(--line);}
.cat-list a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:44px;font-size:14px;color:var(--t2);
}
.cat-list a:hover{color:var(--brand);}
.cat-list .count{
  font-size:12px;color:var(--t3);font-family:"Space Grotesk",Barlow,sans-serif;
}
.side-cta{
  padding:24px 22px;text-align:left;
  background:
    radial-gradient(240px 160px at 100% 0%, rgba(35,224,192,.18), transparent 70%),
    var(--glass);
}
.side-cta h4{font-size:17px;font-weight:700;margin-bottom:8px;}
.side-cta p{font-size:13.5px;color:var(--t3);margin-bottom:16px;line-height:1.75;}
.side-cta .btn-glow{width:100%;}

/* ============ Article footer blocks ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;padding-top:24px;border-top:1px solid var(--line);}
.tag{
  display:inline-flex;align-items:center;min-height:32px;padding:0 14px;
  border-radius:var(--r-pill);font-size:13px;
  color:var(--t2);background:rgba(255,255,255,.05);border:1px solid var(--line);
  transition:all .18s var(--ease);
}
.tag:hover{color:var(--brand);border-color:rgba(35,224,192,.4);background:rgba(35,224,192,.08);}
.tag.gold{color:var(--gold);background:rgba(255,194,75,.12);border-color:rgba(255,194,75,.3);}

.pager{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:26px;
}
.pager a{
  padding:18px 20px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);
  transition:all .18s var(--ease);
}
.pager a:hover{border-color:rgba(35,224,192,.35);transform:translateY(-3px);}
.pager .label{font-size:12px;letter-spacing:.12em;color:var(--t3);display:block;margin-bottom:8px;}
.pager .ttl{
  font-size:15px;color:var(--t1);font-weight:600;line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.pager .next{text-align:right;}

.related{margin-top:56px;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;
}
.section-head h2{font-size:clamp(20px,2.6vw,26px);font-weight:700;}
.section-head .sub{font-size:13px;color:var(--t3);margin-top:6px;}
.rel-card{
  height:100%;overflow:hidden;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);
  transition:all .22s var(--ease);display:flex;flex-direction:column;
}
.rel-card:hover{
  transform:translateY(-4px);
  border-color:rgba(35,224,192,.35);
  box-shadow:var(--shadow),0 0 0 1px rgba(35,224,192,.28),0 24px 60px -30px rgba(35,224,192,.6);
}
.rel-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-elev);}
.rel-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.rel-card:hover .rel-media img{transform:scale(1.04);}
.rel-media .pill{
  position:absolute;left:12px;top:12px;
  padding:4px 11px;border-radius:var(--r-pill);font-size:11.5px;font-weight:600;
  color:var(--brand-100);background:rgba(7,11,20,.7);
  border:1px solid rgba(35,224,192,.35);backdrop-filter:blur(6px);
}
.rel-body{padding:18px 20px 20px;flex:1;display:flex;flex-direction:column;}
.rel-body h3{
  font-size:16px;font-weight:600;line-height:1.55;margin-bottom:10px;color:var(--t1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-body p{
  font-size:13.5px;color:var(--t2);line-height:1.7;margin:0 0 14px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-foot{margin-top:auto;font-size:12px;color:var(--t3);font-family:"Space Grotesk",Barlow,sans-serif;}
.back-row{margin-top:26px;}

/* ============ Empty state ============ */
.empty-state{
  padding:56px 28px;text-align:center;border-radius:var(--r-lg);
  background:var(--glass);border:1px dashed rgba(35,224,192,.3);
}
.empty-state .ring{
  width:58px;height:58px;margin:0 auto 18px;border-radius:50%;
  border:2px solid rgba(35,224,192,.45);display:flex;align-items:center;justify-content:center;
  color:var(--brand);font-size:22px;font-weight:700;
  font-family:"Space Grotesk",Barlow,sans-serif;
}
.empty-state h2{font-size:20px;font-weight:700;margin-bottom:10px;}
.empty-state p{color:var(--t3);font-size:14px;max-width:460px;margin:0 auto 22px;}

/* ============ CTA strip ============ */
.cta-strip{
  margin-top:64px;padding:34px 36px;border-radius:var(--r-lg);
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  background:
    radial-gradient(420px 220px at 96% 12%, rgba(255,61,139,.16), transparent 70%),
    radial-gradient(420px 220px at 4% 92%, rgba(35,224,192,.16), transparent 70%),
    var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
}
.cta-strip h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;margin-bottom:8px;}
.cta-strip p{color:var(--t3);font-size:14px;margin:0;}

/* ============ Footer ============ */
.site-footer{
  margin-top:24px;background:var(--bg-soft);
  border-top:1px solid var(--line);
  padding:64px 0 26px;position:relative;z-index:2;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--t3);line-height:1.85;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--t1);margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--t2);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--t3);
  font-family:"Space Grotesk",Barlow,sans-serif;
}

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

/* ============ Responsive ============ */
@media (max-width:991.98px){
  .nav-toggle{display:inline-flex;}
  .nav-links{
    position:absolute;left:24px;right:24px;top:calc(100% + 10px);
    flex-direction:column;align-items:stretch;gap:2px;padding:12px;
    background:rgba(17,26,43,.96);
    backdrop-filter:blur(14px) saturate(140%);
    border:1px solid var(--line);border-radius:var(--r-lg);
    box-shadow:var(--shadow);
    display:none;
  }
  .nav-links.open{display:flex;}
  .nav-links a{min-height:46px;padding:0 14px;}
  .nav-links a::after{left:14px;right:auto;width:22px;bottom:9px;}
  .nav-actions .btn-glow{display:none;}
  .side-sticky{position:static;margin-top:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:767.98px){
  .container{padding:0 18px;}
  .article-body{padding:24px 20px 26px;}
  .pager{grid-template-columns:1fr;}
  .pager .next{text-align:left;}
  .crumb .current{max-width:48vw;}
  .cta-strip{padding:26px 22px;}
  .cta-strip .btn-glow{width:100%;}
}
@media (max-width:575.98px){
  .logo{font-size:16px;}
  .logo-mark{width:32px;height:32px;border-radius:10px;font-size:13px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .article-head{padding:18px 0 26px;}
  .side-card{padding:18px 18px 16px;}
}

/* roulang page: category1 */
:root{
  --bg:#070B14;
  --bg-soft:#0C1220;
  --bg-elev:#111A2B;
  --brand:#23E0C0;
  --brand-600:#17C4A8;
  --brand-100:#C7FFF5;
  --accent:#FF3D8B;
  --gold:#FFC24B;
  --t1:#E9EEF7;
  --t2:#A9B6CB;
  --t3:#6C7A91;
  --line:rgba(255,255,255,.08);
  --success:#34D399;
  --warn:#F59E0B;
  --danger:#F87171;
  --r-lg:20px;
  --r-md:14px;
  --r-pill:999px;
  --shadow:0 12px 32px rgba(0,0,0,.45);
  --glass:rgba(255,255,255,.045);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--t1);
  background-color:var(--bg);
  background-image:
    radial-gradient(920px 640px at 10% 6%, rgba(35,224,192,.14), transparent 62%),
    radial-gradient(780px 560px at 84% 74%, rgba(255,61,139,.10), transparent 62%),
    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,32px 32px,32px 32px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease);}
a:hover{color:var(--brand-100);}
p{margin:0 0 1.15em;}
h1,h2,h3,h4{margin:0 0 .6em;line-height:1.3;color:var(--t1);}
ul,ol{margin:0 0 1.15em;padding-left:1.1em;}
li{margin-bottom:.5em;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.container{width:100%;max-width:1200px;padding:0 24px;margin:0 auto;}
@media (min-width:1400px){.container{max-width:1320px;}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(7,11,20,.72);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease);
}
.site-header.scrolled{
  background:rgba(12,18,32,.78);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  height:72px;
  transition:height .24s var(--ease);
}
.site-header.scrolled .nav-inner{height:60px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--t1);font-weight:700;letter-spacing:.02em;font-size:17px;}
.logo:hover{color:var(--t1);}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:11px;
  background:linear-gradient(135deg,rgba(35,224,192,.9),rgba(26,184,232,.8));
  color:#04121A;font-size:13px;font-weight:800;letter-spacing:.04em;
  box-shadow:0 6px 18px rgba(35,224,192,.28), inset 0 1px 0 rgba(255,255,255,.35);
}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links > a{
  position:relative;
  padding:10px 14px;min-height:44px;display:inline-flex;align-items:center;
  color:var(--t2);font-size:15px;border-radius:var(--r-md);
  transition:color .16s var(--ease),background .16s var(--ease);
}
.nav-links > a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .16s var(--ease);
}
.nav-links > a:hover{color:var(--t1);background:rgba(255,255,255,.04);}
.nav-links > a:hover::after{transform:scaleX(1);}
.nav-links > a.active{color:var(--brand);}
.nav-links > a.active::after{transform:scaleX(1);}
.nav-links > a.btn::after{display:none;}

.nav-cta{margin-left:10px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);
  padding:0;cursor:pointer;position:relative;
}
.nav-toggle span{
  display:block;width:18px;height:2px;margin:3px auto;border-radius:2px;background:var(--t1);
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle.open span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border-radius:var(--r-md);
  font-size:15px;font-weight:700;letter-spacing:.01em;border:1px solid transparent;
  cursor:pointer;transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary,.btn.btn-primary{
  background:linear-gradient(135deg,var(--brand),#1AB8E8);
  color:#04121A;border:0;
  box-shadow:0 8px 24px rgba(35,224,192,.28),0 0 0 1px rgba(35,224,192,.5);
}
.btn-primary:hover,.btn.btn-primary:hover{
  color:#04121A;filter:brightness(1.08);transform:translateY(-1px);
  box-shadow:0 12px 32px rgba(35,224,192,.34),0 0 0 1px rgba(35,224,192,.6);
}
.btn-primary:active{transform:translateY(0);filter:brightness(.97);}
.btn-ghost{
  background:var(--glass);color:var(--brand);
  border:1px solid rgba(35,224,192,.45);
  backdrop-filter:blur(14px) saturate(140%);
}
.btn-ghost:hover{background:rgba(255,255,255,.08);color:var(--brand-100);border-color:rgba(35,224,192,.7);transform:translateY(-1px);}
.btn-sm{padding:9px 16px;font-size:14px;min-height:40px;}
.btn-block{width:100%;}

/* ---------- 标签 / 徽章 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.12em;font-weight:600;
  background:rgba(35,224,192,.12);color:var(--brand);
  border:1px solid rgba(35,224,192,.3);
}
.badge-gold{
  background:rgba(255,194,75,.12);color:var(--gold);border:1px solid rgba(255,194,75,.3);
}
.badge-pink{
  background:rgba(255,61,139,.12);color:var(--accent);border:1px solid rgba(255,61,139,.3);
}
.badge-plain{
  background:rgba(255,255,255,.06);color:var(--t2);border:1px solid var(--line);letter-spacing:.06em;
}

/* ---------- Banner ---------- */
.page-banner{
  position:relative;overflow:hidden;
  display:flex;align-items:flex-end;
  min-height:340px;
  border-bottom:1px solid var(--line);
}
.banner-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  opacity:.4;
}
.banner-mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.5) 0%,rgba(7,11,20,.82) 55%,rgba(7,11,20,.96) 100%);
}
.banner-inner{position:relative;z-index:2;padding-top:110px;padding-bottom:46px;}
.breadcrumb-nav{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--t3);margin-bottom:16px;
}
.breadcrumb-nav a{color:var(--t2);}
.breadcrumb-nav a:hover{color:var(--brand);}
.breadcrumb-nav .sep{color:var(--t3);}
.breadcrumb-nav .current{color:var(--t1);}
.page-banner h1{
  font-size:clamp(30px,5vw,52px);font-weight:800;line-height:1.2;
  margin:14px 0 14px;max-width:20ch;
}
.banner-lead{
  color:var(--t2);font-size:16px;max-width:62ch;margin:0;
}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}

/* ---------- 主体布局 ---------- */
.page-main{padding:64px 0 88px;}
.layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 340px;
  gap:28px;
  align-items:start;
}
.content-col{min-width:0;}
.side-col{min-width:0;}

.article-block{margin-bottom:64px;}
.article-block:last-child{margin-bottom:0;}
.article-block h2{
  position:relative;
  font-size:clamp(24px,3.4vw,32px);font-weight:700;
  padding-left:16px;margin-bottom:22px;
}
.article-block h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),rgba(35,224,192,.2));
}
.article-block h3{font-size:19px;font-weight:600;margin:26px 0 10px;}
.article-block p{color:var(--t2);}
.article-block strong{color:var(--t1);font-weight:700;}

.block-grid{
  display:grid;grid-template-columns:5fr 7fr;gap:28px;align-items:center;
  margin-bottom:26px;
}
.block-grid.reverse{grid-template-columns:7fr 5fr;}
.block-fig{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);
  background:var(--bg-elev);
}
.block-fig img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.block-fig::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 45%,rgba(7,11,20,.6) 100%);
  pointer-events:none;
}
.fig-tag{
  position:absolute;left:14px;bottom:14px;z-index:2;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.08em;
  background:rgba(35,224,192,.14);color:var(--brand-100);
  border:1px solid rgba(35,224,192,.35);
  backdrop-filter:blur(10px);
}

.check-list{list-style:none;padding-left:0;margin:0;}
.check-list li{
  position:relative;padding-left:26px;color:var(--t2);margin-bottom:.7em;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:9px;height:9px;border-radius:3px;
  background:linear-gradient(135deg,var(--brand),rgba(35,224,192,.35));
  box-shadow:0 0 0 3px rgba(35,224,192,.1);
}
.step-list{list-style:none;padding-left:0;counter-reset:step;margin:0;}
.step-list li{
  position:relative;padding-left:46px;margin-bottom:18px;color:var(--t2);
}
.step-list li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:2px;
  width:30px;height:30px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
  color:var(--brand);background:rgba(35,224,192,.1);
  border:1px solid rgba(35,224,192,.3);
}
.step-list li strong{display:block;color:var(--t1);font-weight:600;margin-bottom:2px;}

/* ---------- 对照小表 ---------- */
.table-wrap{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  margin:8px 0 18px;
}
.mini-table{width:100%;min-width:560px;border-collapse:collapse;}
.mini-table th,.mini-table td{
  padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--t2);white-space:nowrap;
}
.mini-table thead th{
  background:rgba(255,255,255,.045);
  color:var(--t1);font-weight:600;font-size:14px;letter-spacing:.06em;
}
.mini-table tbody tr:last-child td{border-bottom:0;}
.mini-table tbody tr:hover td{background:rgba(255,255,255,.035);}
.mini-table td:first-child,.mini-table th:first-child{color:var(--t1);font-weight:600;}
.mini-table .mark-yes{color:var(--brand);font-weight:700;}
.mini-table .mark-no{color:var(--t3);}

/* ---------- 侧栏 ---------- */
.toc-card{
  position:sticky;top:96px;
  border-radius:var(--r-lg);border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
  padding:22px 20px;
  margin-bottom:20px;
}
.toc-card h4{
  font-size:13px;letter-spacing:.14em;color:var(--t3);font-weight:600;
  margin-bottom:14px;text-transform:uppercase;
}
.toc-list{list-style:none;padding:0;margin:0;}
.toc-list li{margin-bottom:4px;}
.toc-list a{
  display:block;padding:9px 12px;border-radius:10px;
  color:var(--t2);font-size:14px;
  border-left:2px solid transparent;
  transition:color .16s var(--ease),background .16s var(--ease),border-color .16s var(--ease);
}
.toc-list a:hover{color:var(--t1);background:rgba(255,255,255,.05);}
.toc-list a.active{
  color:var(--brand);border-left-color:var(--brand);
  background:rgba(35,224,192,.08);
}
.side-cta{
  border-radius:var(--r-lg);border:1px solid rgba(35,224,192,.28);
  background:linear-gradient(160deg,rgba(35,224,192,.12),rgba(12,18,32,.6));
  padding:22px 20px;
  box-shadow:var(--shadow);
}
.side-cta h4{font-size:17px;font-weight:700;margin-bottom:8px;}
.side-cta p{color:var(--t2);font-size:14px;margin-bottom:16px;}
.side-note{
  margin-top:16px;font-size:13px;color:var(--t3);
  border-top:1px dashed var(--line);padding-top:14px;
}

/* ---------- 相关链接卡 ---------- */
.related-block{margin-top:72px;padding-top:48px;border-top:1px solid var(--line);}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:22px;}
.mini-card{
  position:relative;display:block;overflow:hidden;
  border-radius:var(--r-lg);border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  color:var(--t1);
}
.mini-card:hover{
  transform:translateY(-4px);color:var(--t1);
  border-color:rgba(35,224,192,.35);
  box-shadow:var(--shadow),0 0 0 1px rgba(35,224,192,.28);
}
.mini-card:hover::after{
  content:"";position:absolute;right:-40px;bottom:-40px;width:120px;height:120px;border-radius:50%;
  background:radial-gradient(circle,rgba(35,224,192,.28),transparent 70%);
  pointer-events:none;
}
.mini-card .thumb{width:100%;aspect-ratio:16/9;object-fit:cover;}
.mini-card .body{padding:18px 18px 20px;}
.mini-card h3{font-size:16px;font-weight:600;line-height:1.5;margin-bottom:8px;color:var(--t1);}
.mini-card p{font-size:13.5px;color:var(--t2);margin:0;}
.mini-card .meta{font-size:12px;color:var(--t3);margin-top:12px;letter-spacing:.06em;}

/* ---------- 底部 CTA 条 ---------- */
.cta-strip{
  margin-top:64px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  padding:34px 32px;border-radius:var(--r-lg);
  border:1px solid rgba(35,224,192,.26);
  background:linear-gradient(120deg,rgba(35,224,192,.13),rgba(255,61,139,.07) 70%,rgba(12,18,32,.4));
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
}
.cta-strip h2{font-size:clamp(20px,2.6vw,26px);font-weight:700;margin-bottom:8px;}
.cta-strip p{color:var(--t2);margin:0;font-size:15px;max-width:60ch;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;
  background:var(--bg-soft);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;
}
.footer-brand .logo{margin-bottom:14px;}
.footer-brand p{color:var(--t3);font-size:14px;max-width:42ch;line-height:1.9;}
.footer-col h4{
  font-size:13px;letter-spacing:.14em;color:var(--t3);font-weight:600;
  margin-bottom:16px;text-transform:uppercase;
}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:var(--t2);font-size:14px;}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  color:var(--t3);font-size:13px;
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .layout{grid-template-columns:minmax(0,1fr) 300px;}
}
@media (max-width:991.98px){
  .nav-toggle{display:block;}
  .nav-links{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    padding:12px 16px 18px;
    background:var(--bg-elev);
    border:1px solid var(--line);border-top:0;
    border-radius:0 0 var(--r-lg) var(--r-lg);
    box-shadow:var(--shadow);
    display:none;
  }
  .nav-links.open{display:flex;}
  .nav-links > a{padding:12px 14px;}
  .nav-links > a::after{display:none;}
  .nav-links > a.active{background:rgba(35,224,192,.1);}
  .nav-cta{margin:8px 0 0;}
  .layout{grid-template-columns:minmax(0,1fr);gap:36px;}
  .side-col{order:2;}
  .toc-card{position:static;}
  .page-banner{min-height:300px;}
  .banner-inner{padding-top:96px;padding-bottom:38px;}
  .page-main{padding:48px 0 64px;}
  .article-block{margin-bottom:52px;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767.98px){
  body{font-size:15.5px;line-height:1.8;}
  .container{padding:0 18px;}
  .block-grid,.block-grid.reverse{grid-template-columns:1fr;gap:20px;}
  .block-grid.reverse .block-fig{order:-1;}
  .page-main{padding:40px 0 56px;}
  .article-block h2{padding-left:13px;}
  .cta-strip{padding:26px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .related-grid{grid-template-columns:1fr;}
  .site-footer{padding:52px 0 24px;margin-top:64px;}
}
@media (max-width:575.98px){
  .page-banner{min-height:260px;}
  .banner-inner{padding-top:86px;padding-bottom:32px;}
  .page-banner h1{max-width:none;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .badge-soft{font-size:11px;padding:5px 11px;}
}

/* roulang page: category2 */
:root{
  --bg:#070B14;
  --bg-soft:#0C1220;
  --bg-elev:#111A2B;
  --brand:#23E0C0;
  --brand-600:#17C4A8;
  --brand-100:#C7FFF5;
  --accent:#FF3D8B;
  --gold:#FFC24B;
  --t1:#E9EEF7;
  --t2:#A9B6CB;
  --t3:#6C7A91;
  --line:rgba(255,255,255,.08);
  --ok:#34D399;
  --warn:#F59E0B;
  --err:#F87171;
  --glass:rgba(255,255,255,.045);
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow:0 12px 32px rgba(0,0,0,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --num:'Space Grotesk','Barlow','HarmonyOS Sans SC','PingFang SC',sans-serif;
}

*,*::before,*::after{box-sizing:border-box}

html{
  background:var(--bg);
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  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 680px at 14% 22%, rgba(35,224,192,.15), transparent 70%),
    radial-gradient(560px 560px at 82% 76%, rgba(255,61,139,.10), transparent 72%);
}

body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.03) 1px, transparent 1px);
  background-size:32px 32px;
}

img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease)}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul{list-style:none;padding:0}

:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1400px){
  .container{max-width:1320px}
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(7,11,20,.72);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.88);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
  transition:height .22s var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px}

.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--t1);
  white-space:nowrap;
}
.logo-mark{
  display:grid;
  place-items:center;
  width:34px;
  height:34px;
  border-radius:11px;
  background:linear-gradient(135deg,var(--brand),#1AB8E8);
  color:#04121A;
  font-family:var(--num);
  font-size:14px;
  font-weight:800;
  letter-spacing:.02em;
  box-shadow:0 6px 18px rgba(35,224,192,.28);
}
.logo:hover{color:var(--brand-100)}

.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  font-size:15px;
  color:var(--t2);
  border-radius:10px;
  transition:color .16s var(--ease),background .16s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:8px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .16s var(--ease);
}
.nav-links a:hover{color:var(--t1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--brand)}
.nav-links a.active::after{transform:scaleX(1)}

.header-actions{display:flex;align-items:center;gap:12px}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:var(--glass);
  padding:0;
  cursor:pointer;
  place-items:center;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  margin:3px auto;
  border-radius:2px;
  background:var(--t1);
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:var(--bg-elev);
  padding:12px 0 20px;
}
.mobile-panel.is-open{display:block}
.mobile-panel nav{display:flex;flex-direction:column;margin-bottom:16px}
.mobile-panel nav a{
  padding:14px 24px;
  font-size:16px;
  color:var(--t2);
  border-bottom:1px solid var(--line);
}
.mobile-panel nav a.active,
.mobile-panel nav a:hover{color:var(--brand)}
.mobile-panel .btn{margin:0 24px}

@media (max-width:991.98px){
  .nav-links{display:none}
  .header-actions > .btn{display:none}
  .nav-toggle{display:grid}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 22px;
  border-radius:var(--radius-md);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  text-align:center;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),filter .18s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),#1AB8E8);
  color:#04121A;
  font-weight:700;
  box-shadow:0 8px 24px rgba(35,224,192,.28),0 0 0 1px rgba(35,224,192,.5);
}
.btn-primary:hover{
  color:#04121A;
  filter:brightness(1.08);
  box-shadow:0 12px 32px rgba(35,224,192,.36),0 0 0 1px rgba(35,224,192,.6);
  transform:translateY(-1px);
}
.btn-primary:active{
  transform:translateY(0);
  filter:brightness(.96);
  box-shadow:0 6px 16px rgba(35,224,192,.24),0 0 0 1px rgba(35,224,192,.5);
}
.btn-ghost{
  background:var(--glass);
  border-color:rgba(35,224,192,.42);
  color:var(--brand-100);
  backdrop-filter:blur(14px) saturate(140%);
}
.btn-ghost:hover{
  background:rgba(255,255,255,.08);
  border-color:var(--brand);
  color:#FFFFFF;
  transform:translateY(-1px);
}
.btn-sm{min-height:40px;padding:8px 18px;font-size:14px;border-radius:12px}

/* 通用组件覆盖（BootStrap 去默认化） */
.card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  color:var(--t1);
  box-shadow:var(--shadow);
  backdrop-filter:blur(14px) saturate(140%);
}
.card-body{padding:24px}
.badge{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--brand);
  background:rgba(35,224,192,.12);
  border:1px solid rgba(35,224,192,.3);
}
.badge-gold{
  color:var(--gold);
  background:rgba(255,194,75,.12);
  border-color:rgba(255,194,75,.3);
}
.form-control,.form-select{
  min-height:46px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  color:var(--t1);
  font-size:15px;
  padding:11px 16px;
}
.form-control::placeholder{color:var(--t3)}
.form-control:focus,.form-select:focus{
  background:rgba(255,255,255,.07);
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(35,224,192,.16);
  color:var(--t1);
}
.table{
  color:var(--t2);
  border-color:var(--line);
}
.table > :not(caption) > * > *{
  background:transparent;
  border-bottom-color:var(--line);
  padding:16px 18px;
}
.table thead th{color:var(--t2);font-weight:600}

/* ============ 页面主体 ============ */
.page-hero,
.section,
.site-footer{position:relative;z-index:1}

.page-hero{padding:44px 0 0}

.breadcrumb-line{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--t3);
  margin-bottom:20px;
}
.breadcrumb-line a{color:var(--t3)}
.breadcrumb-line a:hover{color:var(--brand)}
.breadcrumb-line .sep{color:rgba(255,255,255,.18)}
.breadcrumb-line .current{color:var(--t2)}

.hero-panel{
  position:relative;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  min-height:200px;
  padding:32px 38px;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.hero-panel::before{
  content:"";
  position:absolute;
  left:-140px;
  top:-160px;
  width:460px;
  height:460px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(35,224,192,.18),transparent 68%);
  pointer-events:none;
}
.hero-panel::after{
  content:"";
  position:absolute;
  right:-60px;
  bottom:-180px;
  width:360px;
  height:360px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,61,139,.12),transparent 70%);
  pointer-events:none;
}
.hero-panel-text{position:relative;z-index:1;max-width:760px}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.12em;
  color:var(--brand);
  background:rgba(35,224,192,.10);
  border:1px solid rgba(35,224,192,.3);
  border-radius:999px;
  padding:5px 13px;
  margin-bottom:16px;
}

h1{
  font-size:clamp(28px,4vw,42px);
  line-height:1.24;
  font-weight:800;
  letter-spacing:-.01em;
  margin-bottom:14px;
}
h1 .hl{color:var(--brand)}
.hero-panel p{
  color:var(--t2);
  font-size:15.5px;
  max-width:680px;
}

.medal{
  position:relative;
  z-index:1;
  flex:0 0 auto;
  display:grid;
  place-items:center;
  gap:2px;
  width:122px;
  height:122px;
  border-radius:50%;
  text-align:center;
  color:var(--gold);
  background:radial-gradient(circle at 50% 28%,rgba(255,194,75,.22),rgba(255,194,75,.03));
  border:1px solid rgba(255,194,75,.4);
  box-shadow:0 0 0 8px rgba(255,194,75,.05);
}
.medal-num{
  font-family:var(--num);
  font-size:34px;
  font-weight:800;
  line-height:1;
}
.medal-cap{
  font-size:11px;
  letter-spacing:.12em;
  color:rgba(255,194,75,.86);
}

/* ============ 板块 ============ */
.section{padding:88px 0}
.section-tight{padding-top:52px}

.section-head{max-width:740px;margin-bottom:40px}
.section-head h2{
  font-size:clamp(24px,3.4vw,36px);
  line-height:1.32;
  font-weight:700;
  margin-bottom:14px;
}
.section-head p{color:var(--t2);font-size:15.5px}

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

/* 特征卡片网格 */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.feature-card{
  position:relative;
  overflow:hidden;
  padding:28px 26px;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.feature-card::after{
  content:"";
  position:absolute;
  right:-64px;
  bottom:-64px;
  width:150px;
  height:150px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(35,224,192,.18),transparent 70%);
  opacity:0;
  transition:opacity .26s var(--ease);
  pointer-events:none;
}
.feature-card:hover{
  transform:translateY(-4px);
  border-color:rgba(35,224,192,.35);
  box-shadow:var(--shadow),0 0 0 1px rgba(35,224,192,.18);
}
.feature-card:hover::after{opacity:1}
.f-icon{
  display:grid;
  place-items:center;
  width:46px;
  height:46px;
  margin-bottom:18px;
  border-radius:13px;
  background:rgba(35,224,192,.12);
  border:1px solid rgba(35,224,192,.3);
  color:var(--brand);
}
.feature-card h3{
  font-size:20px;
  font-weight:600;
  margin-bottom:10px;
}
.feature-card p{
  font-size:15px;
  color:var(--t2);
  margin:0;
}
.feature-card .tag-row{margin-top:16px;display:flex;gap:8px;flex-wrap:wrap}

/* 对比表 */
.cmp-wrap{
  overflow-x:auto;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--glass);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
table.cmp{
  width:100%;
  min-width:680px;
  border-collapse:separate;
  border-spacing:0;
}
.cmp th,.cmp td{
  padding:17px 20px;
  text-align:left;
  font-size:15px;
  white-space:nowrap;
  border-bottom:1px solid var(--line);
}
.cmp thead th{
  position:sticky;
  top:0;
  z-index:2;
  background:rgba(255,255,255,.05);
  color:var(--t2);
  font-size:13.5px;
  font-weight:600;
  letter-spacing:.06em;
}
.cmp tbody tr:last-child td{border-bottom:0}
.cmp tbody tr{transition:background .18s var(--ease)}
.cmp tbody tr:hover td{background:rgba(35,224,192,.055)}
.cmp td:first-child,.cmp th:first-child{
  position:sticky;
  left:0;
  z-index:3;
  background:#0E1626;
  color:var(--t1);
  font-weight:600;
}
.cmp thead th:first-child{z-index:4;background:#131C2E}
.cmp .dot-ok{color:var(--brand);font-weight:700}
.cmp .dash{color:var(--t3)}

/* 步骤 + 图 */
.steps-layout{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
}
.step-list{display:flex;flex-direction:column;gap:6px}
.step-item{
  display:flex;
  gap:18px;
  padding:18px 20px;
  border-radius:var(--radius-md);
  border:1px solid transparent;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.step-item:hover{
  background:rgba(255,255,255,.04);
  border-color:var(--line);
}
.step-num{
  flex:0 0 auto;
  font-family:var(--num);
  font-size:19px;
  font-weight:700;
  color:var(--brand);
  min-width:34px;
  line-height:1.6;
}
.step-item h3{
  font-size:17.5px;
  font-weight:600;
  margin-bottom:6px;
}
.step-item p{
  font-size:14.8px;
  color:var(--t2);
  margin:0;
}

.figure{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.figure::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(7,11,20,.72),rgba(7,11,20,0) 58%);
  pointer-events:none;
}
.figure-cap{
  position:absolute;
  left:22px;
  bottom:20px;
  z-index:2;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}

/* FAQ */
.faq-acc .accordion-item{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-md) !important;
  overflow:hidden;
  margin-bottom:12px;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.faq-acc .accordion-item:last-child{margin-bottom:0}
.faq-acc .accordion-button{
  display:flex;
  align-items:center;
  gap:14px;
  width:100%;
  padding:20px 22px;
  font-size:16.5px;
  font-weight:600;
  color:var(--t1);
  background:transparent;
  border:0;
  box-shadow:none;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.faq-acc .accordion-button:hover{background:rgba(255,255,255,.04);color:var(--brand-100)}
.faq-acc .accordion-button:not(.collapsed){
  color:var(--brand-100);
  background:rgba(35,224,192,.07);
  border-left:2px solid var(--brand);
}
.faq-acc .accordion-button:focus{
  box-shadow:none;
  outline:none;
  border-color:rgba(35,224,192,.5);
}
.faq-acc .accordion-button::after{
  flex:0 0 auto;
  width:22px;
  height:22px;
  margin-left:auto;
  content:"";
  border-radius:999px;
  border:1px solid rgba(35,224,192,.35);
  background-color:rgba(35,224,192,.12);
  background-image:
    linear-gradient(var(--brand),var(--brand)),
    linear-gradient(var(--brand),var(--brand));
  background-position:center center,center center;
  background-size:10px 2px,2px 10px;
  background-repeat:no-repeat;
  transition:background-size .2s var(--ease),transform .2s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{
  background-size:10px 2px,2px 0;
  transform:rotate(180deg);
}
.faq-acc .accordion-body{
  padding:0 22px 22px;
  color:var(--t2);
  font-size:15.2px;
  line-height:1.9;
}

/* CTA 条 */
.cta-bar{
  position:relative;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:42px 44px;
  border-radius:var(--radius-lg);
  border:1px solid rgba(35,224,192,.24);
  background-image:linear-gradient(90deg,rgba(7,11,20,.95),rgba(7,11,20,.74)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
}
.cta-text{position:relative;z-index:1;max-width:620px}
.cta-text h2{
  font-size:clamp(22px,2.8vw,30px);
  font-weight:700;
  line-height:1.34;
  margin-bottom:12px;
}
.cta-text p{color:var(--t2);font-size:15.2px;margin:0}
.cta-actions{
  position:relative;
  z-index:1;
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  flex:0 0 auto;
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:24px;
  background:var(--bg-soft);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid var(--line);
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{
  color:var(--t3);
  font-size:14.5px;
  max-width:340px;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:var(--t1);
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{
  color:var(--t2);
  font-size:14.5px;
}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:24px;
  font-size:13.5px;
  color:var(--t3);
}

@media (max-width:991.98px){
  .section{padding:64px 0}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .steps-layout{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:34px 30px}
}

@media (max-width:767.98px){
  .hero-panel{flex-direction:column;align-items:flex-start;padding:28px 24px}
  .medal{width:96px;height:96px}
  .medal-num{font-size:26px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
}

@media (max-width:575.98px){
  .container{padding-left:18px;padding-right:18px}
  .section{padding:48px 0}
  .feature-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  h1{font-size:26px}
  .cta-bar{padding:28px 22px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}