/* roulang page: index */
:root{
  --bg-base:#0A0C12;--bg-soft:#11141D;--bg-card:#151A26;--bg-card-hover:#1B2233;
  --line:#242C3D;--line-soft:#1E2534;
  --primary:#12E2C0;--primary-deep:#0AA48C;--violet:#8B5CF6;--accent:#FF4D8D;
  --badge-gold:#FFC24B;--ok:#2BD98B;--warn:#FF5C7A;
  --text-1:#EAF0FF;--text-2:#A6B0C6;--text-3:#6C778F;
  --grad:linear-gradient(120deg,#12E2C0 0%,#8B5CF6 52%,#FF4D8D 100%);
  --r-sm:10px;--r-md:14px;--r-lg:20px;--r-xl:28px;--r-pill:999px;
  --shadow-card:0 8px 24px rgba(0,0,0,.45);
  --shadow-glow:0 0 0 1px rgba(18,226,192,.35),0 0 28px rgba(18,226,192,.22);
  --shadow-glow-pink:0 0 0 1px rgba(255,77,141,.35),0 0 24px rgba(255,77,141,.18);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-base);color:var(--text-1);
  font-family:var(--font-cn);font-size:16px;line-height:1.85;
  letter-spacing:0;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(18,226,192,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0d1017}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#12E2C0,#0AA48C);border-radius:999px;border:2px solid #0d1017}
::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,#8B5CF6,#12E2C0)}

.container{max-width:1240px;margin:0 auto;padding:0 24px;width:100%}
.section{padding:96px 0}
.section-soft{background:var(--bg-soft);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head h2{font-size:30px;margin-bottom:10px}
.section-head .sub{color:var(--text-2);font-size:16px;max-width:640px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12px;
  letter-spacing:.08em;text-transform:uppercase;color:var(--primary);
  border:1px solid rgba(18,226,192,.32);background:rgba(18,226,192,.07);
  border-radius:var(--r-pill);padding:5px 14px;margin-bottom:18px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary)}

/* ------- 导航 ------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(10,12,18,.96);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:box-shadow .22s ease}
.site-header::after{content:"";display:block;height:1px;background:var(--grad);opacity:.55}
.site-header.scrolled{box-shadow:0 10px 30px rgba(0,0,0,.6)}
.nav-inner{max-width:1240px;margin:0 auto;padding:0 24px;height:68px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  background:var(--grad);padding:2px;box-shadow:0 0 18px rgba(18,226,192,.35)}
.brand-mark span{width:100%;height:100%;border-radius:50%;background:var(--bg-base);display:grid;place-items:center;
  font-family:var(--font-mono);font-size:13px;font-weight:700;color:var(--primary)}
.brand-text{font-size:17px;font-weight:700;color:var(--text-1);white-space:nowrap}
.brand-text em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{position:relative;display:inline-flex;align-items:center;height:68px;padding:0 14px;
  font-size:15px;color:var(--text-2);transition:color .18s ease}
.nav-links a:hover{color:var(--text-1)}
.nav-links a.active{color:var(--text-1);text-shadow:0 0 12px rgba(18,226,192,.55)}
.nav-links a.active::after{content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;background:var(--grad);border-radius:2px}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{display:none;width:44px;height:44px;border-radius:var(--r-sm);background:transparent;
  border:1px solid var(--line);cursor:pointer;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-1)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ------- 按钮 ------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 28px;
  border-radius:var(--r-pill);font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,opacity .18s ease;white-space:nowrap}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.btn-primary{background:var(--grad);color:#06110F;box-shadow:0 6px 20px rgba(18,226,192,.22)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:var(--shadow-glow)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-secondary{background:transparent;border-color:var(--line);color:var(--primary)}
.btn-secondary:hover{border-color:var(--primary);background:rgba(18,226,192,.08);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text-2);padding:0 12px}
.btn-ghost:hover{color:var(--primary);box-shadow:inset 0 -1px 0 var(--primary)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ------- Hero ------- */
.hero{position:relative;padding:76px 0 96px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-20% -10% auto -10%;height:80%;
  background:radial-gradient(50% 60% at 22% 30%,rgba(18,226,192,.16),transparent 70%),
             radial-gradient(45% 55% at 82% 12%,rgba(139,92,246,.18),transparent 70%),
             radial-gradient(40% 50% at 60% 80%,rgba(255,77,141,.10),transparent 72%);
  pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-size:40px;line-height:1.25;margin:0 0 20px}
.hero h1 .hl{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px}
.hero-stats{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats .stat{flex:1 1 150px;min-width:140px;background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--r-md);padding:14px 18px;transition:border-color .18s ease,background .18s ease}
.hero-stats .stat:hover{border-color:rgba(18,226,192,.4);background:var(--bg-card-hover)}
.hero-stats .num{font-family:var(--font-mono);font-size:20px;font-weight:700;color:var(--primary);display:block}
.hero-stats .lbl{font-size:13px;color:var(--text-3)}
.hero-visual{position:relative;border-radius:var(--r-xl);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-card);aspect-ratio:16/11}
.hero-visual img{width:100%;height:100%;object-fit:cover;border-radius:inherit}
.hero-visual::after{content:"";position:absolute;inset:0;border-radius:inherit;
  background:linear-gradient(165deg,rgba(10,12,18,.42) 0%,rgba(10,12,18,.84) 100%),
             linear-gradient(120deg,rgba(18,226,192,.20),rgba(139,92,246,.18) 52%,rgba(255,77,141,.16))}
.hero-visual .v-badge{position:absolute;z-index:2;display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(0,0,0,.55);backdrop-filter:blur(6px)}
.v-badge.tl{top:20px;left:20px;border:1px solid rgba(18,226,192,.55);color:var(--primary)}
.v-badge.br{bottom:20px;right:20px;border:1px solid rgba(255,194,75,.55);color:var(--badge-gold)}
.hero-visual .v-caption{position:absolute;z-index:2;left:24px;right:24px;bottom:24px}
.hero-visual .v-caption strong{display:block;font-size:18px;margin-bottom:6px}
.hero-visual .v-caption p{font-size:14px;color:var(--text-2)}

/* ------- 卡片通用 ------- */
.card{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-xl);
  transition:transform .22s ease,background .22s ease,border-color .22s ease,box-shadow .22s ease;overflow:hidden}
.card:hover{background:var(--bg-card-hover);border-color:rgba(18,226,192,.4);transform:translateY(-4px);box-shadow:var(--shadow-glow)}
.card-pad{padding:26px}
.card h3{font-size:20px;margin-bottom:10px}
.card p{color:var(--text-2);font-size:15px}
.cover{position:relative;aspect-ratio:16/9;overflow:hidden}
.cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .cover img{transform:scale(1.04)}
.cover::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,18,.15) 0%,rgba(10,12,18,.72) 100%)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.tag{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-family:var(--font-mono);
  padding:4px 12px;border-radius:var(--r-pill);border:1px solid rgba(18,226,192,.35);
  background:rgba(18,226,192,.08);color:var(--primary)}
.tag.pink{border-color:rgba(255,77,141,.35);background:rgba(255,77,141,.08);color:var(--accent)}
.tag.gold{border-color:rgba(255,194,75,.35);background:rgba(255,194,75,.08);color:var(--badge-gold)}
.tag.violet{border-color:rgba(139,92,246,.4);background:rgba(139,92,246,.1);color:#B69BFF}

/* ------- 快速通道 ------- */
.path-card{position:relative;display:flex;flex-direction:column}
.path-card .card-pad{flex:1;display:flex;flex-direction:column;gap:12px}
.path-card .num-badge{font-family:var(--font-mono);font-size:12px;color:var(--text-3)}
.path-card .more{margin-top:auto;font-size:14px;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.path-card:hover .more{gap:10px}

/* ------- 权益对比表 ------- */
.table-wrap{border:1px solid var(--line);border-radius:var(--r-xl);overflow:hidden;background:var(--bg-card)}
table.compare{width:100%;border-collapse:collapse;font-size:15px}
table.compare th,table.compare td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--line-soft);vertical-align:top}
table.compare thead th{position:sticky;top:68px;background:#12161F;font-size:14px;color:var(--text-2);
  font-weight:600;z-index:5}
table.compare thead th strong{display:block;color:var(--text-1);font-size:15px;margin-bottom:2px}
table.compare thead th.hl-col{background:rgba(18,226,192,.06);box-shadow:inset 0 2px 0 var(--primary)}
table.compare tbody tr:hover{background:rgba(255,255,255,.025)}
table.compare td.hl-col{background:rgba(18,226,192,.06);color:var(--text-1);font-weight:500}
table.compare td:first-child{color:var(--text-2);width:26%}
table.compare tbody tr:last-child td{border-bottom:none}
.cmp-cards{display:none}

/* ------- 等级卡 ------- */
.tier{position:relative;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:30px 26px;display:flex;flex-direction:column;gap:16px;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease}
.tier::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad);border-radius:var(--r-xl) var(--r-xl) 0 0}
.tier:hover{transform:translateY(-4px);border-color:rgba(18,226,192,.4);box-shadow:var(--shadow-glow)}
.tier.featured{transform:translateY(-8px);border-color:rgba(139,92,246,.45)}
.tier.featured:hover{transform:translateY(-12px)}
.tier .tier-name{font-size:20px}
.tier .price{font-family:var(--font-mono);font-size:26px;font-weight:700;color:var(--primary)}
.tier .price small{font-size:13px;color:var(--text-3);font-family:var(--font-cn);font-weight:400}
.tier ul{display:flex;flex-direction:column;gap:10px;margin-top:4px}
.tier li{display:flex;gap:10px;font-size:15px;color:var(--text-2);line-height:1.7}
.tier li svg{flex-shrink:0;margin-top:6px}
.tier .tier-badge{position:absolute;top:20px;right:20px}
.tier .btn{margin-top:auto;width:100%}

/* ------- 预览卡 ------- */
.preview-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.preview{position:relative;border-radius:var(--r-xl);overflow:hidden;border:1px solid var(--line);background:var(--bg-card);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease}
.preview:hover{transform:translateY(-4px);border-color:rgba(18,226,192,.4);box-shadow:var(--shadow-glow)}
.preview .cover{aspect-ratio:16/10}
.preview .cover::after{background:linear-gradient(180deg,rgba(10,12,18,.3) 0%,rgba(10,12,18,.88) 100%);transition:opacity .22s ease}
.preview:hover .cover::after{opacity:.8}
.preview .lock{position:absolute;top:14px;right:14px;z-index:3;width:32px;height:32px;border-radius:50%;
  display:grid;place-items:center;background:rgba(0,0,0,.6);border:1px solid rgba(255,194,75,.5);color:var(--badge-gold)}
.preview .p-body{position:absolute;left:0;right:0;bottom:0;z-index:3;padding:20px}
.preview .p-body h3{font-size:17px;margin-bottom:6px}
.preview .p-body p{font-size:13px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ------- 最新信息 ------- */
.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;gap:14px;background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--r-xl);padding:24px;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease,background .22s ease}
.news-card:hover{transform:translateY(-4px);background:var(--bg-card-hover);border-color:rgba(18,226,192,.4);box-shadow:var(--shadow-glow)}
.news-card h3{font-size:18px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .desc{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;
  padding-top:14px;border-top:1px solid var(--line-soft)}
.news-meta time{font-family:var(--font-mono);font-size:12px;color:var(--text-3)}
.news-meta .arrow{color:var(--primary);font-family:var(--font-mono);font-size:14px}
.empty-state{border:1px dashed var(--line);border-radius:var(--r-xl);padding:56px 24px;text-align:center;background:var(--bg-card)}
.empty-state .ico{width:48px;height:48px;margin:0 auto 16px;border-radius:50%;display:grid;place-items:center;
  border:1px solid rgba(18,226,192,.4);color:var(--primary);font-family:var(--font-mono)}
.empty-state p{color:var(--text-2);margin-bottom:18px}

/* ------- FAQ ------- */
.faq{display:flex;flex-direction:column;gap:12px;max-width:920px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--bg-card);overflow:hidden;
  transition:border-color .2s ease,background .2s ease}
.faq-item.open{border-color:rgba(18,226,192,.45);background:rgba(255,255,255,.03);
  box-shadow:inset 3px 0 0 var(--primary)}
.faq-q{width:100%;min-height:52px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 22px;background:transparent;border:0;cursor:pointer;text-align:left;font-size:16px;font-weight:600;
  color:var(--text-1);transition:color .18s ease}
.faq-q:focus-visible{outline:2px solid var(--primary);outline-offset:-3px}
.faq-q .ic{flex-shrink:0;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;font-family:var(--font-mono);color:var(--primary);
  transition:transform .18s ease,border-color .18s ease}
.faq-item.open .faq-q .ic{transform:rotate(180deg);border-color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a p{padding:0 22px 20px;color:var(--text-2);font-size:15px}

/* ------- CTA 条 ------- */
.cta-band{position:relative;border-radius:var(--r-xl);overflow:hidden;border:1px solid var(--line);
  padding:44px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band::before{content:"";position:absolute;inset:0;background:var(--grad);opacity:.9}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(10,12,18,.88),rgba(10,12,18,.62))}
.cta-band>*{position:relative;z-index:2}
.cta-band h2{font-size:26px;margin-bottom:8px}
.cta-band p{color:#D6DEEC;font-size:15px;max-width:520px}
.cta-form{display:flex;gap:12px;flex-wrap:wrap}

/* ------- 表单 ------- */
.field{display:flex;flex-direction:column;gap:8px;min-width:240px}
.field label{font-size:14px;color:var(--text-2)}
.input{height:48px;padding:0 16px;border-radius:var(--r-md);background:#0F131C;border:1px solid var(--line);
  color:var(--text-1);transition:border-color .18s ease,box-shadow .18s ease;width:100%}
.input::placeholder{color:var(--text-3)}
.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(18,226,192,.18)}
.input.error{border-color:var(--warn)}
.err-tip{font-size:12px;color:var(--warn)}

/* ------- 页脚 ------- */
.site-footer{background:#080A10;border-top:1px solid var(--line-soft);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-grid h4{font-size:15px;margin-bottom:18px;color:var(--text-1)}
.footer-grid p,.footer-grid li,.footer-grid a{font-size:14px;color:var(--text-3)}
.footer-grid a:hover{color:var(--primary)}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-bottom{margin-top:48px;border-top:1px solid var(--line-soft);padding:22px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer-bottom p{font-size:12px;color:var(--text-3)}

/* ------- 移动抽屉 ------- */
.drawer{position:fixed;inset:0;z-index:120;background:var(--bg-base);transform:translateX(100%);
  transition:transform .26s ease;display:flex;flex-direction:column;padding:20px 20px 32px}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px;margin-bottom:18px}
.drawer-close{width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);background:transparent;
  cursor:pointer;color:var(--text-1);font-size:20px;line-height:1}
.drawer nav{display:flex;flex-direction:column;gap:4px}
.drawer nav a{display:flex;align-items:center;height:48px;padding:0 14px;border-radius:var(--r-sm);
  color:var(--text-2);font-size:16px;transition:background .18s ease,color .18s ease}
.drawer nav a.active{color:var(--text-1);background:rgba(18,226,192,.06);box-shadow:inset 3px 0 0 var(--primary)}
.drawer .drawer-cta{margin-top:auto;display:flex;flex-direction:column;gap:12px}
.drawer .drawer-cta .btn{width:100%}

@media (max-width:1279px){
  .grid-3,.preview-grid,.news-list{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-actions .btn-login{display:none}
  .nav-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  table.compare thead th{top:68px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .hero{padding:52px 0 64px}
  .hero h1{font-size:28px}
  .section-head h2{font-size:22px}
  .grid-3,.grid-2,.preview-grid,.news-list{grid-template-columns:1fr;gap:16px}
  .table-wrap{display:none}
  .cmp-cards{display:flex;flex-direction:column;gap:16px}
  .cmp-cards .card-pad{padding:20px}
  .cmp-cards .row{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--line-soft);font-size:14px}
  .cmp-cards .row:last-child{border-bottom:none}
  .cmp-cards .row span:first-child{color:var(--text-2)}
  .cmp-cards .row span:last-child{color:var(--text-1);text-align:right}
  .tier.featured{transform:none}
  .tier.featured:hover{transform:translateY(-4px)}
  .cta-band{padding:28px 22px}
  .cta-band h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:479px){
  .hero h1{font-size:25px}
  .hero-lead{font-size:15px}
  .btn{width:100%;padding:0 20px}
  .nav-actions .btn-primary{display:none}
  .cta-form{width:100%}
  .field{min-width:0;width:100%}
}

/* roulang page: article */
:root{
  --bg-base:#0A0C12;
  --bg-soft:#11141D;
  --bg-card:#151A26;
  --bg-card-hover:#1B2233;
  --line:#242C3D;
  --line-soft:#1E2534;
  --primary:#12E2C0;
  --primary-deep:#0AA48C;
  --violet:#8B5CF6;
  --accent:#FF4D8D;
  --badge-gold:#FFC24B;
  --ok:#2BD98B;
  --warn:#FF5C7A;
  --text-1:#EAF0FF;
  --text-2:#A6B0C6;
  --text-3:#6C778F;
  --grad:linear-gradient(120deg,#12E2C0 0%,#8B5CF6 52%,#FF4D8D 100%);
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --shadow-card:0 8px 24px rgba(0,0,0,.45);
  --shadow-glow:0 0 0 1px rgba(18,226,192,.35),0 0 28px rgba(18,226,192,.22);
  --shadow-glow-pink:0 0 0 1px rgba(255,77,141,.35),0 0 24px rgba(255,77,141,.18);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background-color:var(--bg-base);
  background-image:
    radial-gradient(900px 520px at 10% -12%, rgba(18,226,192,.10), transparent 62%),
    radial-gradient(820px 480px at 94% 4%, rgba(139,92,246,.13), transparent 64%);
  background-repeat:no-repeat;
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding-left:1.15em;}
h1,h2,h3,h4{line-height:1.3;font-weight:700;letter-spacing:0;color:var(--text-1);}
::selection{background:rgba(18,226,192,.28);color:#fff;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#080A10;}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#12E2C0,#0AA48C);border-radius:8px;border:2px solid #080A10;}
::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,#8B5CF6,#12E2C0);}

.container{max-width:1240px;margin:0 auto;padding:0 24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;line-height:1;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,filter .18s ease,opacity .18s ease;
}
.btn-sm{height:38px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}
.btn-primary{background:var(--grad);color:#07100E;box-shadow:0 6px 20px rgba(18,226,192,.22);}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:var(--shadow-glow);}
.btn-primary:active{transform:translateY(0);filter:brightness(.96);}
.btn-secondary{background:transparent;color:var(--primary);border-color:var(--line);}
.btn-secondary:hover{border-color:var(--primary);background:rgba(18,226,192,.08);transform:translateY(-1px);}
.btn-secondary:active{transform:translateY(0);background:rgba(18,226,192,.14);}
.btn-ghost{background:transparent;color:var(--text-2);}
.btn-ghost:hover{color:var(--text-1);text-decoration:underline;text-underline-offset:5px;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;pointer-events:none;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,12,18,.96);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:box-shadow .2s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--grad);opacity:.55;
}
.site-header.scrolled{box-shadow:0 10px 30px rgba(0,0,0,.55);}
.nav-inner{
  max-width:1240px;margin:0 auto;padding:0 24px;
  height:68px;display:flex;align-items:center;gap:22px;
}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;
  background:radial-gradient(circle at 30% 28%, rgba(18,226,192,.34), rgba(139,92,246,.24));
  border:1px solid rgba(18,226,192,.55);
  box-shadow:0 0 18px rgba(18,226,192,.25);
}
.brand-mark span{font-family:var(--font-mono);font-size:11px;font-weight:700;color:var(--primary);letter-spacing:.5px;}
.brand-text{font-size:18px;font-weight:700;color:var(--text-1);}
.brand-text em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px;}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 13px;border-radius:var(--r-sm);
  font-size:15px;color:var(--text-2);
  transition:color .18s ease,background-color .18s ease;
}
.nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,.04);}
.nav-links a.active{color:var(--text-1);text-shadow:0 0 12px rgba(18,226,192,.55);}
.nav-links a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  border-radius:2px;background:var(--grad);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--line);position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;
  background:var(--text-1);transform:translateX(-50%);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:20px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
body.nav-open .nav-toggle span{background:transparent;}
body.nav-open .nav-toggle span::before{transform:rotate(45deg);top:0;}
body.nav-open .nav-toggle span::after{transform:rotate(-45deg);top:0;}
.nav-mobile-cta{display:none;}

/* ---------- 面包屑 ---------- */
.crumb-bar{
  border-bottom:1px solid var(--line-soft);
  background:rgba(17,20,29,.6);
}
.crumb-inner{padding:14px 0;font-size:13px;color:var(--text-3);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);}
.breadcrumb a{color:var(--text-2);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--text-3);opacity:.6;}
.breadcrumb .current{color:var(--text-3);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;
  padding:56px 0 46px;
  border-bottom:1px solid var(--line-soft);
  background-image:
    linear-gradient(180deg, rgba(10,12,18,.86) 0%, rgba(10,12,18,.97) 88%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg, rgba(18,226,192,.10), rgba(139,92,246,.12) 55%, rgba(255,77,141,.08));
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:1;}
.article-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.6px;
  color:var(--primary);text-transform:uppercase;
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(18,226,192,.35);background:rgba(18,226,192,.07);
  margin-bottom:20px;
}
.article-title{
  font-size:40px;line-height:1.25;font-weight:700;
  max-width:20ch;letter-spacing:0;
}
.article-meta{
  margin-top:22px;display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-family:var(--font-mono);font-size:13px;color:var(--text-3);
}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12px;font-weight:700;
  font-family:var(--font-sans);letter-spacing:.2px;
}
.tag-primary{color:var(--primary);background:rgba(18,226,192,.10);border:1px solid rgba(18,226,192,.35);}
.tag-violet{color:#C9B6FF;background:rgba(139,92,246,.14);border:1px solid rgba(139,92,246,.40);}
.tag-gold{color:var(--badge-gold);background:rgba(255,194,75,.10);border:1px solid rgba(255,194,75,.35);}
.tag-pink{color:var(--accent);background:rgba(255,77,141,.10);border:1px solid rgba(255,77,141,.35);}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);opacity:.6;}

/* ---------- 正文 ---------- */
.article-main-wrap{padding:64px 0 24px;}
.prose{
  max-width:800px;margin:0 auto;
  font-size:17px;line-height:1.9;color:var(--text-2);
  overflow-wrap:anywhere;
}
.prose > * + *{margin-top:1.4em;}
.prose h2{
  position:relative;padding-left:16px;margin-top:2.1em;
  font-size:26px;line-height:1.4;color:var(--text-1);
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:2px;background:var(--grad);
}
.prose h3{
  position:relative;padding-left:14px;margin-top:1.8em;
  font-size:20px;line-height:1.45;color:var(--text-1);
}
.prose h3::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:2px;border-radius:2px;
  background:var(--primary);opacity:.85;
}
.prose h4{font-size:17px;color:var(--text-1);margin-top:1.5em;}
.prose p{color:var(--text-2);}
.prose strong{color:var(--text-1);font-weight:700;}
.prose em{color:#CFE6FF;font-style:normal;border-bottom:1px dashed rgba(18,226,192,.5);}
.prose a{color:var(--primary);border-bottom:1px solid rgba(18,226,192,.35);transition:color .18s ease,border-color .18s ease;}
.prose a:hover{color:#7BF3DF;border-color:var(--primary);}
.prose ul,.prose ol{padding-left:1.25em;color:var(--text-2);}
.prose li{padding-left:4px;}
.prose li + li{margin-top:.55em;}
.prose li::marker{color:var(--primary);}
.prose blockquote{
  margin:1.8em 0;padding:18px 22px;
  border-left:3px solid var(--primary);
  background:rgba(18,226,192,.06);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--text-1);
}
.prose blockquote p{color:var(--text-1);}
.prose img{
  width:100%;height:auto;margin:1.9em auto;
  border-radius:var(--r-lg);object-fit:cover;
  box-shadow:var(--shadow-card);
  border:1px solid var(--line);
}
.prose code{
  font-family:var(--font-mono);font-size:.9em;color:var(--primary);
  background:#0F131C;border:1px solid var(--line);border-radius:6px;padding:2px 7px;
}
.prose pre{
  background:#0B0E15;border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 20px;overflow-x:auto;
}
.prose pre code{background:none;border:0;padding:0;color:#D7E2F5;}
.prose hr{border:0;height:1px;background:var(--line);margin:2.4em 0;}
.prose table{
  width:100%;border-collapse:collapse;
  font-size:15px;line-height:1.7;color:var(--text-2);
  display:block;overflow-x:auto;
}
.prose th,.prose td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line-soft);white-space:nowrap;}
.prose th{color:var(--text-1);background:rgba(18,226,192,.07);font-weight:700;}
.prose tr:hover td{background:rgba(255,255,255,.02);}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:800px;margin:0 auto;text-align:center;
  padding:56px 28px;border-radius:var(--r-xl);
  background:var(--bg-card);border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 20px;border-radius:50%;
  display:grid;place-items:center;font-family:var(--font-mono);font-size:22px;font-weight:700;
  color:var(--accent);background:rgba(255,77,141,.10);border:1px solid rgba(255,77,141,.35);
  box-shadow:var(--shadow-glow-pink);
}
.empty-state h2{font-size:24px;margin-bottom:12px;}
.empty-state p{color:var(--text-2);margin-bottom:26px;}

/* ---------- 文末返回栏 ---------- */
.article-foot{
  max-width:800px;margin:40px auto 0;padding-top:26px;
  border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
}
.article-foot .foot-note{font-size:14px;color:var(--text-3);margin-right:auto;}

/* ---------- CTA 条 ---------- */
.cta-band{
  margin-top:88px;position:relative;overflow:hidden;
  border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);
  background:linear-gradient(120deg, rgba(18,226,192,.16) 0%, rgba(139,92,246,.20) 52%, rgba(255,77,141,.16) 100%), #0B0E15;
}
.cta-inner{
  padding:56px 24px;display:flex;flex-wrap:wrap;align-items:center;gap:28px;
}
.cta-inner h2{font-size:28px;margin-bottom:10px;}
.cta-inner p{color:var(--text-2);max-width:56ch;}
.cta-actions{margin-left:auto;display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 延伸阅读 ---------- */
.section{padding:88px 0 0;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:18px;margin-bottom:30px;}
.section-head h2{font-size:30px;}
.section-head p{color:var(--text-3);font-size:14px;}
.section-head .head-link{margin-left:auto;}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-xl);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease;
}
.card:hover{
  transform:translateY(-4px);background:var(--bg-card-hover);
  box-shadow:var(--shadow-glow);border-color:rgba(18,226,192,.4);
}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .card-media img{transform:scale(1.04);}
.card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(10,12,18,.15) 0%, rgba(10,12,18,.72) 100%);
}
.card-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:19px;line-height:1.5;}
.card-body p{font-size:14px;color:var(--text-2);line-height:1.8;}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:space-between;
  font-family:var(--font-mono);font-size:12px;color:var(--text-3);
}
.card-foot .arrow{color:var(--primary);transition:transform .18s ease;}
.card:hover .card-foot .arrow{transform:translateX(4px);}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto;border-top:1px solid var(--line-soft);}
.faq-item{border-bottom:1px solid var(--line-soft);}
.faq-q{
  width:100%;min-height:52px;display:flex;align-items:center;gap:16px;
  padding:14px 8px 14px 14px;text-align:left;
  font-size:16px;font-weight:700;color:var(--text-1);
  transition:background-color .18s ease,box-shadow .18s ease,color .18s ease;
}
.faq-q:hover{background:rgba(255,255,255,.03);}
.faq-item.open .faq-q{background:rgba(255,255,255,.03);box-shadow:inset 3px 0 0 var(--primary);}
.faq-icon{
  margin-left:auto;flex:0 0 auto;position:relative;width:20px;height:20px;
  transition:transform .18s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;transition:opacity .18s ease;}
.faq-item.open .faq-icon{transform:rotate(180deg);}
.faq-item.open .faq-icon::after{opacity:0;}
.faq-a{display:none;padding:0 8px 22px 14px;}
.faq-item.open .faq-a{display:block;}
.faq-a p{color:var(--text-2);font-size:15px;line-height:1.85;max-width:74ch;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;background:#080A10;border-top:1px solid var(--line-soft);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;
  padding:66px 0 44px;
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.site-footer p{color:var(--text-3);font-size:14px;line-height:1.85;}
.site-footer h4{font-size:15px;margin-bottom:16px;color:var(--text-1);}
.footer-list{list-style:none;padding:0;margin:0;display:grid;gap:11px;}
.footer-list a,.footer-list li{color:var(--text-2);font-size:14px;}
.footer-list a{transition:color .18s ease;}
.footer-list a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:20px 0 30px;border-top:1px solid var(--line-soft);
  font-size:12px;color:var(--text-3);
}
.footer-bottom p{font-size:12px;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .card-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  .article-title{font-size:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;padding:56px 0 36px;}
  .cta-inner{padding:48px 24px;}
}
@media (max-width:900px){
  .nav-links{
    position:fixed;top:68px;left:0;right:0;bottom:0;z-index:55;
    flex-direction:column;align-items:stretch;gap:0;margin-left:0;
    padding:16px 16px 120px;
    background:#0A0C12;overflow-y:auto;
    transform:translateX(100%);opacity:0;pointer-events:none;
    transition:transform .22s ease,opacity .22s ease;
    border-top:1px solid var(--line-soft);
  }
  body.nav-open .nav-links{transform:translateX(0);opacity:1;pointer-events:auto;}
  .nav-links a{
    height:48px;padding:0 16px;border-radius:var(--r-md);
    border-bottom:1px solid var(--line-soft);font-size:16px;
  }
  .nav-links a.active{background:rgba(18,226,192,.06);box-shadow:inset 3px 0 0 var(--primary);text-shadow:none;}
  .nav-links a.active::after{display:none;}
  .nav-toggle{display:block;}
  .nav-actions .btn-login{display:none;}
  .nav-actions .btn-primary{display:none;}
  .nav-mobile-cta{
    display:block;position:absolute;left:16px;right:16px;bottom:24px;
  }
  .nav-links{position:fixed;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .nav-inner{padding:0 16px;gap:12px;}
  body{font-size:16px;}
  .article-hero{padding:38px 0 34px;}
  .article-title{font-size:28px;max-width:none;}
  .article-meta{gap:10px;font-size:12px;}
  .article-main-wrap{padding:44px 0 16px;}
  .prose{font-size:16px;line-height:1.9;}
  .prose h2{font-size:22px;}
  .prose h3{font-size:18px;}
  .card-grid{grid-template-columns:1fr;}
  .section{padding:60px 0 0;}
  .section-head h2{font-size:22px;}
  .section-head .head-link{margin-left:0;}
  .cta-band{margin-top:60px;}
  .cta-inner{padding:40px 16px;gap:20px;}
  .cta-inner h2{font-size:22px;}
  .cta-actions{margin-left:0;width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:48px 0 30px;}
  .site-footer{margin-top:64px;}
  .faq-q{font-size:15px;}
}
@media (max-width:480px){
  .article-title{font-size:24px;}
  .brand-text{font-size:16px;}
  .btn{width:100%;padding:0 20px;}
  .btn-sm{width:auto;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .article-foot .btn{width:100%;}
  .cta-actions{flex-direction:column;}
  .prose table{font-size:14px;}
}

/* roulang page: category1 */
:root{
  --bg-base:#0A0C12;
  --bg-soft:#11141D;
  --bg-card:#151A26;
  --bg-card-hover:#1B2233;
  --line:#242C3D;
  --line-soft:#1E2534;
  --primary:#12E2C0;
  --primary-deep:#0AA48C;
  --violet:#8B5CF6;
  --accent:#FF4D8D;
  --badge-gold:#FFC24B;
  --ok:#2BD98B;
  --warn:#FF5C7A;
  --text-1:#EAF0FF;
  --text-2:#A6B0C6;
  --text-3:#6C778F;
  --grad-brand:linear-gradient(120deg,#12E2C0 0%,#8B5CF6 52%,#FF4D8D 100%);
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --shadow-card:0 8px 24px rgba(0,0,0,.45);
  --shadow-glow:0 0 0 1px rgba(18,226,192,.35),0 0 28px rgba(18,226,192,.22);
  --shadow-glow-pink:0 0 0 1px rgba(255,77,141,.35),0 0 24px rgba(255,77,141,.18);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
h1,h2,h3,h4,p,ul,ol,li{margin:0;padding:0}
ul,ol{list-style:none}
h1{font-size:40px;font-weight:700;line-height:1.25}
h2{font-size:30px;font-weight:700;line-height:1.35}
h3{font-size:20px;font-weight:700;line-height:1.45}
h4{font-size:17px;font-weight:700;line-height:1.5}
p{color:var(--text-2)}
::selection{background:rgba(18,226,192,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0B0E15}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#12E2C0,#0AA48C);border-radius:999px;border:2px solid #0B0E15}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:var(--r-sm)}

.container{max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head p{margin-top:14px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--primary);text-transform:uppercase;
  border:1px solid rgba(18,226,192,.35);
  background:rgba(18,226,192,.06);
  padding:6px 14px;border-radius:var(--r-pill);
  margin-bottom:18px;
}
.neon-line{height:2px;width:100%;background:var(--grad-brand);opacity:.55;border-radius:2px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,12,18,.96);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-soft);
  transition:box-shadow .22s ease,background .22s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:var(--grad-brand);opacity:.55;
}
.site-header.scrolled{box-shadow:0 12px 32px rgba(0,0,0,.55)}
.nav-inner{
  max-width:1240px;margin:0 auto;padding:0 24px;height:68px;
  display:flex;align-items:center;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(18,226,192,.08);
  box-shadow:inset 0 0 0 1px rgba(18,226,192,.4),0 0 18px rgba(18,226,192,.2);
  position:relative;
}
.brand-mark::before{
  content:"";position:absolute;inset:-2px;border-radius:50%;
  background:var(--grad-brand);
  -webkit-mask:radial-gradient(farthest-side,transparent calc(100% - 2px),#000 0);
  mask:radial-gradient(farthest-side,transparent calc(100% - 2px),#000 0);
  opacity:.9;
}
.brand-mark span{
  font-family:var(--font-mono);font-size:10px;font-weight:700;
  color:var(--primary);letter-spacing:.04em;
}
.brand-text{
  font-size:18px;font-weight:700;color:var(--text-1);white-space:nowrap;
}
.brand-text em{font-style:normal;color:var(--primary)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;display:inline-block;
  padding:10px 14px;font-size:15px;color:var(--text-2);
  border-radius:var(--r-sm);
  transition:color .18s ease,background .18s ease;
}
.nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,.045)}
.nav-links a.active{color:var(--text-1);text-shadow:0 0 12px rgba(18,226,192,.55)}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--grad-brand);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--line);align-items:center;justify-content:center;
  transition:border-color .18s ease,background .18s ease;
}
.nav-toggle span{
  display:block;width:18px;height:2px;background:var(--text-1);position:relative;
  border-radius:2px;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-1);border-radius:2px;
  transition:transform .2s ease,top .2s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle:hover{border-color:var(--primary);background:rgba(18,226,192,.08)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .18s ease,filter .18s ease,box-shadow .2s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-primary{
  background:var(--grad-brand);color:#08111A;font-weight:700;
  box-shadow:0 8px 22px rgba(18,226,192,.18);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:var(--shadow-glow)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-secondary{
  background:transparent;color:var(--primary);
  box-shadow:inset 0 0 0 1px var(--line);
}
.btn-secondary:hover{
  box-shadow:inset 0 0 0 1px var(--primary);background:rgba(18,226,192,.08);
  transform:translateY(-1px);
}
.btn-secondary:active{transform:translateY(0);background:rgba(18,226,192,.14)}
.btn-ghost{color:var(--text-2);height:auto;padding:0;border-radius:0}
.btn-ghost:hover{color:var(--primary);text-decoration:underline;text-underline-offset:6px}
.btn-ghost.btn-login{height:40px;padding:0 20px;border-radius:var(--r-pill);box-shadow:inset 0 0 0 1px var(--line);text-decoration:none}
.btn-ghost.btn-login:hover{color:var(--text-1);box-shadow:inset 0 0 0 1px rgba(18,226,192,.5);background:rgba(18,226,192,.06);text-decoration:none}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;pointer-events:none}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.crumb a{color:var(--text-2);transition:color .18s ease}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--text-3);font-family:var(--font-mono)}
.crumb .current{color:var(--text-1)}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;
  min-height:240px;
  display:flex;align-items:flex-end;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line-soft);
  overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,18,.86) 0%,rgba(10,12,18,.68) 45%,rgba(10,12,18,.94) 100%);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(18,226,192,.16) 0%,rgba(139,92,246,.12) 52%,rgba(255,77,141,.14) 100%);
  mix-blend-mode:screen;
}
.cat-hero-inner{position:relative;z-index:2;width:100%;padding:44px 0 40px}
.cat-hero h1{margin:18px 0 14px;max-width:900px}
.cat-hero .hero-sub{max-width:720px;font-size:17px;color:var(--text-2)}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:8px 16px;border-radius:var(--r-pill);
  background:rgba(0,0,0,.55);
  border:1px solid rgba(18,226,192,.35);
  font-size:13px;color:var(--text-2);
}
.hero-badge b{font-family:var(--font-mono);color:var(--primary);font-size:13px;font-weight:700}
.hero-badge.gold{border-color:rgba(255,194,75,.4)}
.hero-badge.gold b{color:var(--badge-gold)}

/* ---------- 主体布局 ---------- */
.layout{
  display:grid;
  grid-template-columns:250px minmax(0,1fr);
  gap:44px;
  align-items:start;
  padding:72px 0 96px;
}
.toc{
  position:sticky;top:96px;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  padding:22px 20px;
  box-shadow:var(--shadow-card);
}
.toc h4{
  font-size:13px;font-family:var(--font-mono);letter-spacing:.06em;
  color:var(--text-3);text-transform:uppercase;margin-bottom:14px;
}
.toc ol{display:flex;flex-direction:column;gap:2px;counter-reset:toc}
.toc li a{
  display:flex;gap:10px;align-items:baseline;
  padding:9px 12px;border-radius:var(--r-sm);
  font-size:14px;color:var(--text-2);
  border-left:3px solid transparent;
  transition:color .18s ease,background .18s ease,border-color .18s ease;
}
.toc li a::before{
  counter-increment:toc;content:counter(toc,decimal-leading-zero);
  font-family:var(--font-mono);font-size:11px;color:var(--text-3);
}
.toc li a:hover{color:var(--text-1);background:rgba(18,226,192,.06);border-left-color:var(--primary)}
.toc li a:hover::before{color:var(--primary)}
.toc-note{
  margin-top:16px;padding-top:16px;border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--text-3);line-height:1.7;
}

.content{min-width:0}
.content-block{
  padding:34px 0 42px;
  border-bottom:1px solid var(--line-soft);
}
.content-block:first-child{padding-top:0}
.content-block:last-of-type{border-bottom:none}
.block-title{
  position:relative;padding-left:16px;margin-bottom:18px;
}
.block-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;
  background:var(--grad-brand);border-radius:3px;
  box-shadow:0 0 14px rgba(18,226,192,.45);
}
.content p + p{margin-top:1.2em}
.content .lead{font-size:17px;color:var(--text-2)}

.figure-card{
  margin:28px 0;
  border-radius:var(--r-xl);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-card);
  box-shadow:var(--shadow-card);
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.figure-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-glow);border-color:rgba(18,226,192,.4)}
.figure-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.figure-card figcaption{
  padding:16px 22px;font-size:14px;color:var(--text-3);
  border-top:1px solid var(--line-soft);
}

.mini-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:26px}
.mini-card{
  background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:22px 22px 24px;
  transition:background .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.mini-card:hover{background:var(--bg-card-hover);border-color:rgba(18,226,192,.4);transform:translateY(-4px);box-shadow:var(--shadow-card)}
.mini-card h4{margin-bottom:8px}
.mini-card p{font-size:14px;line-height:1.75}
.mini-num{
  font-family:var(--font-mono);font-size:12px;color:var(--primary);
  display:inline-block;margin-bottom:12px;padding:4px 10px;border-radius:var(--r-pill);
  background:rgba(18,226,192,.08);border:1px solid rgba(18,226,192,.3);
}

/* ---------- 时间线 ---------- */
.timeline{margin-top:28px;position:relative;padding-left:26px}
.timeline::before{
  content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,#12E2C0,#8B5CF6 60%,rgba(255,77,141,.5));
  border-radius:2px;opacity:.7;
}
.timeline-item{position:relative;padding:0 0 26px 18px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
  content:"";position:absolute;left:-26px;top:8px;width:12px;height:12px;border-radius:50%;
  background:var(--bg-base);border:2px solid var(--primary);
  box-shadow:0 0 12px rgba(18,226,192,.6);
}
.timeline-item h4{margin-bottom:6px}
.timeline-item p{font-size:15px}
.step-tag{
  font-family:var(--font-mono);font-size:12px;color:var(--text-3);
  display:block;margin-bottom:4px;
}

/* ---------- 对照卡 ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:26px}
.compare-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:0 0 22px;overflow:hidden;position:relative;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.compare-card:hover{background:var(--bg-card-hover);transform:translateY(-4px);box-shadow:var(--shadow-card)}
.compare-card .cap{
  padding:18px 24px;font-size:15px;font-weight:700;letter-spacing:0;
  border-bottom:1px solid var(--line-soft);
}
.compare-card.ok{border-top:2px solid var(--ok)}
.compare-card.ok .cap{color:var(--ok)}
.compare-card.warn{border-top:2px solid var(--warn)}
.compare-card.warn .cap{color:var(--warn)}
.compare-card ul{padding:18px 24px 0;display:flex;flex-direction:column;gap:12px}
.compare-card li{position:relative;padding-left:26px;font-size:15px;color:var(--text-2);line-height:1.7}
.compare-card li::before{
  content:"";position:absolute;left:0;top:8px;width:14px;height:8px;
  border-left:2px solid currentColor;border-bottom:2px solid currentColor;
  transform:rotate(-45deg);opacity:.9;
}
.compare-card.ok li::before{color:var(--ok)}
.compare-card.warn li::before{color:var(--warn);border-radius:0;transform:rotate(0);border:none;background:
  linear-gradient(currentColor,currentColor) center/12px 2px no-repeat,
  linear-gradient(currentColor,currentColor) center/2px 12px no-repeat;height:12px;width:12px;top:6px}

/* ---------- 风险卡 ---------- */
.risk-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:26px}
.risk-card{
  background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px 22px 24px;display:flex;gap:16px;align-items:flex-start;
  transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.risk-card:hover{border-color:rgba(255,92,122,.45);background:var(--bg-card-hover);transform:translateY(-3px)}
.risk-icon{
  flex-shrink:0;width:38px;height:38px;border-radius:var(--r-sm);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:13px;font-weight:700;
  color:var(--warn);background:rgba(255,92,122,.1);border:1px solid rgba(255,92,122,.3);
}
.risk-card h4{margin-bottom:6px}
.risk-card p{font-size:14px;line-height:1.75}

/* ---------- 清单 ---------- */
.check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:26px}
.check-item{
  display:flex;gap:12px;align-items:flex-start;
  background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--r-md);padding:16px 18px;
  font-size:15px;color:var(--text-2);line-height:1.7;
  transition:border-color .2s ease,background .2s ease;
}
.check-item:hover{border-color:rgba(18,226,192,.4);background:var(--bg-card-hover)}
.check-item svg{flex-shrink:0;margin-top:5px}
.check-item b{color:var(--text-1)}

/* ---------- 上报表单 ---------- */
.report-card{
  margin-top:26px;background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--r-xl);padding:28px;box-shadow:var(--shadow-card);
}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:14px;color:var(--text-2)}
.field input,.field select,.field textarea{
  height:48px;padding:0 16px;border-radius:var(--r-md);
  background:#0F131C;border:1px solid var(--line);color:var(--text-1);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;padding:14px 16px;resize:vertical;min-height:110px;line-height:1.75}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(18,226,192,.18);
}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:22px}
.form-hint{font-size:13px;color:var(--text-3)}
.form-msg{
  margin-top:16px;padding:12px 16px;border-radius:var(--r-md);
  background:rgba(43,217,139,.08);border:1px solid rgba(43,217,139,.35);
  color:var(--ok);font-size:14px;
}

/* ---------- FAQ ---------- */
.faq{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item:hover{border-color:rgba(18,226,192,.3)}
.faq-item.open{border-color:rgba(18,226,192,.45);background:var(--bg-card-hover)}
.faq-q{
  width:100%;min-height:52px;display:flex;align-items:center;justify-content:space-between;
  gap:18px;text-align:left;padding:14px 22px;
  font-size:16px;font-weight:600;color:var(--text-1);
}
.faq-item.open .faq-q{box-shadow:inset 3px 0 0 var(--primary);background:rgba(255,255,255,.03)}
.faq-icon{
  position:relative;flex-shrink:0;width:18px;height:18px;
  transition:transform .18s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;transition:opacity .18s ease}
.faq-item.open .faq-icon{transform:rotate(180deg)}
.faq-item.open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-item.open .faq-a{max-height:460px}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.85}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background-image:linear-gradient(120deg,rgba(18,226,192,.18) 0%,rgba(139,92,246,.22) 52%,rgba(255,77,141,.2) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);
}
.cta-band::before{content:"";position:absolute;inset:0;background:rgba(10,12,18,.72)}
.cta-inner{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  padding:64px 0;
}
.cta-inner h3{font-size:26px;margin-bottom:10px}
.cta-inner p{max-width:620px;font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:#080A10;border-top:1px solid var(--line-soft);padding:64px 0 28px;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;
  padding-bottom:36px;border-bottom:1px solid var(--line-soft);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.site-footer p{font-size:14px;line-height:1.8;color:var(--text-3)}
.site-footer h4{font-size:15px;margin-bottom:16px;color:var(--text-1)}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list li{font-size:14px;color:var(--text-3);line-height:1.7}
.footer-list a{color:var(--text-2);transition:color .18s ease}
.footer-list a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding-top:22px;
}
.footer-bottom p{font-size:12px;color:var(--text-3)}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .layout{grid-template-columns:minmax(0,1fr);gap:0;padding:56px 0 72px}
  .toc{display:none}
  .mini-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn-login{display:none}
  body.menu-open{overflow:hidden}
  body.menu-open .nav-links{
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    position:fixed;left:0;right:0;top:68px;bottom:0;
    background:var(--bg-base);padding:16px 20px 120px;margin:0;
    overflow-y:auto;z-index:70;
    border-top:1px solid var(--line-soft);
  }
  body.menu-open .nav-links a{
    height:48px;display:flex;align-items:center;
    padding:0 14px;border-radius:var(--r-sm);
    border-left:3px solid transparent;font-size:16px;
  }
  body.menu-open .nav-links a.active{
    border-left-color:var(--primary);background:rgba(18,226,192,.06);
    text-shadow:none;
  }
  body.menu-open .nav-links a.active::after{display:none}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .container,.nav-inner{padding:0 16px}
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:18px}
  .cat-hero{min-height:240px}
  .cat-hero-inner{padding:32px 0 30px}
  .cat-hero .hero-sub{font-size:15px}
  .mini-grid,.compare-grid,.risk-grid,.check-list,.form-grid{grid-template-columns:minmax(0,1fr)}
  .compare-card li,.risk-card p{font-size:14px}
  .content-block{padding:26px 0 32px}
  .report-card{padding:20px}
  .cta-inner{padding:48px 0;flex-direction:column;align-items:flex-start}
  .cta-inner h3{font-size:21px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .nav-actions .btn-primary{display:none}
  body.menu-open .nav-drawer-cta{display:block}
}
@media (max-width:479px){
  h1{font-size:25px}
  .brand-text{font-size:16px}
  .btn{width:100%;padding:0 18px}
  .cta-actions{width:100%}
  .form-foot .btn{width:100%}
  .hero-badge{width:100%;justify-content:space-between}
}
.nav-drawer-cta{display:none}
body.menu-open .nav-drawer-cta{
  display:block;position:fixed;left:0;right:0;bottom:0;z-index:75;
  padding:16px 20px calc(16px + env(safe-area-inset-bottom));
  background:linear-gradient(180deg,rgba(10,12,18,.2),rgba(10,12,18,.98) 40%);
}

/* roulang page: category2 */
:root{
  --bg-base:#0A0C12;--bg-soft:#11141D;--bg-card:#151A26;--bg-card-hover:#1B2233;
  --line:#242C3D;--line-soft:#1E2534;
  --primary:#12E2C0;--primary-deep:#0AA48C;--violet:#8B5CF6;--accent:#FF4D8D;
  --badge-gold:#FFC24B;--ok:#2BD98B;--warn:#FF5C7A;
  --text-1:#EAF0FF;--text-2:#A6B0C6;--text-3:#6C778F;
  --grad:linear-gradient(120deg,#12E2C0 0%,#8B5CF6 52%,#FF4D8D 100%);
  --r-sm:10px;--r-md:14px;--r-lg:20px;--r-xl:28px;--r-pill:999px;
  --shadow-card:0 8px 24px rgba(0,0,0,.45);
  --shadow-glow:0 0 0 1px rgba(18,226,192,.35),0 0 28px rgba(18,226,192,.22);
  --shadow-glow-pink:0 0 0 1px rgba(255,77,141,.35),0 0 24px rgba(255,77,141,.18);
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,"Courier New",monospace;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg-base);color:var(--text-1);font-family:var(--sans);
  font-size:16px;line-height:1.85;letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,border-color .18s ease,opacity .18s ease}
a:hover{color:var(--text-1)}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
button,input{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer}
h1{font-size:40px;line-height:1.25;font-weight:700}
h2{font-size:30px;line-height:1.3;font-weight:700}
h3{font-size:20px;line-height:1.45;font-weight:700}
h4{font-size:17px;line-height:1.5;font-weight:700}
::selection{background:rgba(18,226,192,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0B0E15}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#12E2C0,#0AA48C);border-radius:999px;border:2px solid #0B0E15}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

.container{max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-head p{color:var(--text-2);font-size:15px;margin-top:10px;max-width:720px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.08em;
  color:var(--primary);border:1px solid var(--line);border-radius:var(--r-pill);padding:5px 14px;background:rgba(18,226,192,.06)}
.neon-line{height:2px;border-radius:2px;background:var(--grad);opacity:.55}
.divider{height:1px;background:var(--line-soft);border:0;margin:0}

/* header */
.site-header{position:sticky;top:0;z-index:60;background:rgba(10,12,18,.96);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-soft);transition:box-shadow .24s ease}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:var(--grad);opacity:.55}
.site-header.scrolled{box-shadow:0 10px 30px rgba(0,0,0,.55)}
.nav-inner{max-width:1240px;margin:0 auto;height:68px;padding:0 24px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-1)}
.brand:hover{color:var(--text-1)}
.brand-mark{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;flex:0 0 auto;
  background:rgba(18,226,192,.08);border:1px solid rgba(18,226,192,.55);box-shadow:var(--shadow-glow)}
.brand-mark span{font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:.06em;color:var(--primary)}
.brand-text{font-size:17px;font-weight:700;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--primary)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1 1 auto}
.nav-links a{position:relative;padding:8px 14px;border-radius:var(--r-sm);color:var(--text-2);font-size:15px;font-weight:500}
.nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,.04)}
.nav-links a.active{color:var(--text-1);text-shadow:0 0 12px rgba(18,226,192,.55)}
.nav-links a.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--grad)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:rgba(255,255,255,.03);align-items:center;justify-content:center}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-1);border-radius:2px}
.nav-toggle span::before{top:-6px}.nav-toggle span::after{top:6px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 28px;
  border-radius:var(--r-pill);border:1px solid transparent;font-size:15px;font-weight:600;
  transition:transform .18s ease,box-shadow .2s ease,background-color .18s ease,border-color .18s ease,filter .18s ease}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-primary{background:var(--grad);color:#06110F;box-shadow:0 6px 20px rgba(18,226,192,.22)}
.btn-primary:hover{color:#06110F;filter:brightness(1.08);transform:translateY(-1px);box-shadow:var(--shadow-glow)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-secondary{background:transparent;border-color:var(--line);color:var(--primary)}
.btn-secondary:hover{border-color:var(--primary);background:rgba(18,226,192,.08);color:var(--primary)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-2)}
.btn-ghost:hover{color:var(--text-1);border-color:var(--primary);background:rgba(18,226,192,.06)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;cursor:not-allowed}

/* breadcrumb */
.breadcrumb{padding:22px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);font-family:var(--mono)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--line)}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb [aria-current="page"]{color:var(--text-1)}

/* hero */
.page-hero{margin-top:26px;border-radius:var(--r-xl);overflow:hidden;position:relative;border:1px solid var(--line);
  background-image:linear-gradient(100deg,rgba(7,9,14,.94) 0%,rgba(8,10,18,.78) 46%,rgba(20,10,40,.62) 100%),
  url("/assets/images/backpic/back-2.png");background-size:cover;background-position:center}
.page-hero::after{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--grad)}
.page-hero-inner{padding:56px 48px;position:relative;z-index:2;max-width:860px}
.page-hero h1{font-size:38px;margin:16px 0 14px}
.page-hero h1 span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.page-hero p{color:var(--text-2);font-size:16px;max-width:680px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-meta span{font-family:var(--mono);font-size:12px;color:var(--text-2);border:1px solid var(--line);
  border-radius:var(--r-pill);padding:6px 14px;background:rgba(0,0,0,.45)}
.hero-meta span b{color:var(--primary);font-weight:700}

/* tag bar */
.tag-bar{display:flex;flex-wrap:wrap;gap:10px;padding:18px;border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--bg-soft);margin-bottom:34px}
.tag-btn{height:40px;padding:0 20px;border-radius:var(--r-pill);border:1px solid var(--line);background:rgba(255,255,255,.02);
  color:var(--text-2);font-size:14px;font-weight:600;transition:all .18s ease}
.tag-btn:hover{color:var(--text-1);border-color:rgba(18,226,192,.5);background:rgba(18,226,192,.06)}
.tag-btn.active{background:rgba(18,226,192,.12);border-color:var(--primary);color:var(--text-1);box-shadow:var(--shadow-glow)}

/* level cards */
.level-list{display:flex;flex-direction:column;gap:28px}
.level-card{display:grid;grid-template-columns:1.05fr 1fr;gap:0;border:1px solid var(--line);border-radius:var(--r-xl);
  background:var(--bg-card);overflow:hidden;position:relative;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease,background-color .22s ease}
.level-card:hover{transform:translateY(-4px);background:var(--bg-card-hover);border-color:rgba(18,226,192,.4);box-shadow:var(--shadow-glow)}
.level-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--grad);opacity:.85}
.level-card.is-hidden{display:none}
.level-media{position:relative;min-height:270px;overflow:hidden}
.level-media img{width:100%;height:100%;object-fit:cover}
.level-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,8,13,.72) 0%,rgba(6,8,13,.18) 65%,rgba(6,8,13,.55) 100%)}
.badge{position:absolute;top:16px;right:16px;z-index:3;font-family:var(--mono);font-size:12px;line-height:1;
  padding:8px 14px;border-radius:var(--r-pill);background:rgba(0,0,0,.6);border:1px solid var(--primary);color:var(--primary);white-space:nowrap}
.badge-gold{border-color:var(--badge-gold);color:var(--badge-gold)}
.badge-pink{border-color:var(--accent);color:var(--accent)}
.level-body{padding:34px 34px 30px;display:flex;flex-direction:column;gap:16px}
.level-tag{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;color:var(--text-3)}
.level-tag i{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary)}
.level-body h3{font-size:22px}
.level-body > p{color:var(--text-2);font-size:15px}
.check-list{display:flex;flex-direction:column;gap:10px;margin-top:2px}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--text-2);line-height:1.7}
.check-list svg{flex:0 0 auto;margin-top:5px}
.level-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:auto;padding-top:18px;border-top:1px solid var(--line-soft);flex-wrap:wrap}
.price{font-family:var(--mono);font-size:16px;color:var(--text-1)}
.price small{font-size:12px;color:var(--text-3);margin-left:6px}
.level-card:nth-child(even){grid-template-columns:1fr 1.05fr}
.level-card:nth-child(even) .level-media{order:2}
.level-card:nth-child(even) .level-media::after{background:linear-gradient(270deg,rgba(6,8,13,.72) 0%,rgba(6,8,13,.18) 65%,rgba(6,8,13,.55) 100%)}

/* rights grid */
.rights-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.right-item{display:flex;gap:16px;align-items:flex-start;padding:22px;border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--bg-soft);transition:border-color .2s ease,background-color .2s ease,transform .2s ease}
.right-item:hover{border-color:rgba(18,226,192,.42);background:var(--bg-card-hover);transform:translateY(-3px)}
.right-item .dot{flex:0 0 auto;width:36px;height:36px;border-radius:var(--r-sm);display:grid;place-items:center;
  background:rgba(18,226,192,.1);border:1px solid rgba(18,226,192,.4);font-family:var(--mono);font-size:13px;color:var(--primary)}
.right-item h4{font-size:16px;margin-bottom:6px}
.right-item p{font-size:14px;color:var(--text-2)}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.chip{font-family:var(--mono);font-size:11px;padding:4px 10px;border-radius:var(--r-pill);border:1px solid var(--line);color:var(--text-3)}
.chip.on{border-color:rgba(18,226,192,.5);color:var(--primary);background:rgba(18,226,192,.07)}

/* stat strip */
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:30px;border-radius:var(--r-xl);
  border:1px solid var(--line);background:linear-gradient(120deg,rgba(18,226,192,.06),rgba(139,92,246,.07) 55%,rgba(255,77,141,.06))}
.stat{text-align:center;padding:12px}
.stat b{display:block;font-family:var(--mono);font-size:32px;color:var(--text-1);line-height:1.2}
.stat b em{font-style:normal;color:var(--primary);font-size:18px;margin-left:4px}
.stat span{display:block;margin-top:8px;font-size:13.5px;color:var(--text-2)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.step{position:relative;padding:28px 24px;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--bg-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.step:hover{transform:translateY(-4px);border-color:rgba(18,226,192,.4);box-shadow:var(--shadow-glow)}
.step::before{counter-increment:step;content:"0" counter(step);display:block;font-family:var(--mono);font-size:13px;
  color:var(--primary);margin-bottom:14px}
.step h4{margin-bottom:8px}
.step p{font-size:14px;color:var(--text-2)}

/* faq */
.faq-list{max-width:920px}
.faq-item{border:1px solid var(--line);border-radius:var(--r-md);background:var(--bg-card);margin-bottom:12px;overflow:hidden;
  transition:background-color .2s ease,box-shadow .2s ease}
.faq-item.open{background:rgba(255,255,255,.03);box-shadow:inset 3px 0 0 var(--primary)}
.faq-q{width:100%;min-height:52px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:15px 22px;background:none;border:0;color:var(--text-1);font-size:17px;font-weight:600;text-align:left;line-height:1.6}
.faq-q:hover{color:var(--primary)}
.faq-q .ic{flex:0 0 auto;font-family:var(--mono);font-size:20px;color:var(--primary);transition:transform .18s ease}
.faq-item.open .faq-q .ic{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a p{padding:0 22px 20px;color:var(--text-2);font-size:15px}

/* cta band */
.cta-band{border-radius:var(--r-xl);padding:44px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  background:linear-gradient(120deg,rgba(18,226,192,.16) 0%,rgba(139,92,246,.18) 52%,rgba(255,77,141,.16) 100%);
  border:1px solid rgba(18,226,192,.32);flex-wrap:wrap}
.cta-band h2{font-size:26px}
.cta-band p{color:var(--text-2);font-size:15px;margin-top:8px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* footer */
.site-footer{background:#080A10;border-top:1px solid var(--line-soft);padding:64px 0 24px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.site-footer p{color:var(--text-3);font-size:14px;line-height:1.85}
.site-footer h4{font-size:15px;margin-bottom:16px}
.footer-list li{margin-bottom:10px}
.footer-list a{color:var(--text-2);font-size:14px}
.footer-list a:hover{color:var(--primary)}
.footer-list li{color:var(--text-2);font-size:14px}
.footer-bottom{margin-top:44px;padding-top:20px;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer-bottom p{font-size:12px;color:var(--text-3);font-family:var(--mono)}

@media (max-width:1279px){
  .rights-grid{gap:14px}
  .steps{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  .nav-links a{padding:8px 10px;font-size:14px}
  .level-card,.level-card:nth-child(even){grid-template-columns:1fr}
  .level-card:nth-child(even) .level-media{order:0}
  .level-media{min-height:210px}
  .level-media::after,.level-card:nth-child(even) .level-media::after{background:linear-gradient(180deg,rgba(6,8,13,.35) 0%,rgba(6,8,13,.85) 100%)}
  .rights-grid{grid-template-columns:1fr}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  .nav-toggle{display:flex}
  .nav-actions .btn-login{display:none}
  .nav-links{position:fixed;left:0;right:0;top:68px;bottom:0;flex-direction:column;align-items:stretch;gap:0;
    background:var(--bg-base);padding:14px 18px 90px;margin:0;overflow-y:auto;
    opacity:0;transform:translateY(-10px);pointer-events:none;transition:opacity .22s ease,transform .22s ease}
  .nav-links.open{opacity:1;transform:none;pointer-events:auto}
  .nav-links a{height:48px;display:flex;align-items:center;font-size:16px;border-bottom:1px solid var(--line-soft);border-radius:0;padding:0 12px}
  .nav-links a.active{background:rgba(18,226,192,.06);box-shadow:inset 3px 0 0 var(--primary)}
  .nav-links a.active::after{display:none}
}
@media (max-width:767px){
  h1{font-size:28px}
  .page-hero h1{font-size:27px}
  h2{font-size:22px}
  .container{padding:0 16px}
  .section{padding:56px 0}
  .page-hero-inner{padding:36px 22px}
  .level-body{padding:24px 22px}
  .rights-grid{grid-template-columns:1fr}
  .stat-strip{grid-template-columns:1fr 1fr;padding:20px;gap:10px}
  .steps{grid-template-columns:1fr}
  .cta-band{padding:28px 22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:48px 0 20px;margin-top:56px}
}
@media (max-width:479px){
  h1{font-size:25px}
  .page-hero h1{font-size:24px}
  .stat b{font-size:26px}
  .btn{width:100%;padding:0 20px}
  .cta-actions{width:100%}
  .level-foot{flex-direction:column;align-items:stretch}
  .level-foot .btn{width:100%}
}

/* roulang page: category3 */
:root{
  --bg-base:#0A0C12;
  --bg-soft:#11141D;
  --bg-card:#151A26;
  --bg-card-hover:#1B2233;
  --line:#242C3D;
  --line-soft:#1E2534;
  --primary:#12E2C0;
  --primary-deep:#0AA48C;
  --violet:#8B5CF6;
  --accent:#FF4D8D;
  --badge-gold:#FFC24B;
  --ok:#2BD98B;
  --warn:#FF5C7A;
  --text-1:#EAF0FF;
  --text-2:#A6B0C6;
  --text-3:#6C778F;
  --grad:linear-gradient(120deg,#12E2C0 0%,#8B5CF6 52%,#FF4D8D 100%);
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --shadow-card:0 8px 24px rgba(0,0,0,.45);
  --shadow-glow:0 0 0 1px rgba(18,226,192,.35),0 0 28px rgba(18,226,192,.22);
  --shadow-glow-pink:0 0 0 1px rgba(255,77,141,.35),0 0 24px rgba(255,77,141,.18);
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular","Consolas","Menlo",monospace;
  --container:1240px;
}

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

html{scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

body.no-scroll{overflow:hidden;}

img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul{padding:0;list-style:none;}
h1{font-size:40px;font-weight:700;line-height:1.25;}
h2{font-size:30px;font-weight:700;line-height:1.35;}
h3{font-size:20px;font-weight:700;line-height:1.45;}
h4{font-size:17px;font-weight:700;line-height:1.5;}
p{color:var(--text-2);}

::selection{background:rgba(18,226,192,.28);color:#fff;}

::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#0A0C12;}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#12E2C0,#0AA48C);border-radius:99px;border:2px solid #0A0C12;}

:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(10,12,18,.96);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:box-shadow .2s ease;
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:var(--grad);
  opacity:.55;
}
.site-header.scrolled{box-shadow:0 10px 30px rgba(0,0,0,.6);}

.nav-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  height:68px;
  display:flex;
  align-items:center;
  gap:28px;
}

.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;
  background:linear-gradient(#0A0C12,#0A0C12) padding-box,var(--grad) border-box;
  border:2px solid transparent;
  font-family:var(--mono);
  font-size:10px;
  font-weight:700;
  letter-spacing:.5px;
  color:var(--primary);
}
.brand-text{font-size:17px;font-weight:700;color:var(--text-1);white-space:nowrap;}
.brand-text em{
  font-style:normal;
  background:var(--grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:8px 14px;
  border-radius:var(--r-pill);
  font-size:15px;
  color:var(--text-2);
  transition:color .2s ease,background-color .2s ease;
}
.nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,.04);}
.nav-links a.active{
  color:var(--text-1);
  text-shadow:0 0 12px rgba(18,226,192,.55);
}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;border-radius:2px;
  background:var(--grad);
}

.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  align-items:center;
  justify-content:center;
}
.nav-toggle span{
  position:relative;
  display:block;width:18px;height:2px;
  background:var(--text-1);
  border-radius:2px;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-1);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:46px;
  padding:0 28px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,filter .18s ease,color .18s ease;
}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}

.btn-primary{
  background:var(--grad);
  color:#08131A;
  box-shadow:0 6px 20px rgba(18,226,192,.18);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(18,226,192,.45),0 10px 30px rgba(18,226,192,.3);}
.btn-primary:active{transform:translateY(0);filter:brightness(.96);}

.btn-secondary{
  background:transparent;
  border:1px solid var(--line);
  color:var(--primary);
}
.btn-secondary:hover{border-color:var(--primary);background:rgba(18,226,192,.08);transform:translateY(-1px);}
.btn-secondary:active{transform:translateY(0);}

.btn-ghost{
  color:var(--text-2);
  border:1px solid transparent;
}
.btn-ghost:hover{color:var(--text-1);border-color:var(--line);background:rgba(255,255,255,.04);}

.btn-dark{
  background:#0A0C12;
  color:var(--text-1);
  border:1px solid rgba(10,12,18,.5);
}
.btn-dark:hover{background:#151A26;transform:translateY(-1px);}

.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;pointer-events:none;}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:28px;
  padding:0 14px;
  border-radius:var(--r-pill);
  font-family:var(--mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.2px;
  background:rgba(0,0,0,.55);
  border:1px solid rgba(18,226,192,.5);
  color:var(--primary);
  white-space:nowrap;
}
.badge-gold{border-color:rgba(255,194,75,.55);color:var(--badge-gold);}
.badge-accent{border-color:rgba(255,77,141,.55);color:var(--accent);}
.badge-soft{border-color:var(--line);color:var(--text-2);}

/* ============ 裂变 Hero ============ */
.cat-hero{
  position:relative;
  overflow:hidden;
  padding:64px 0 76px;
  border-bottom:1px solid var(--line-soft);
  background:#0B0E16;
}
.hero-bg{
  position:absolute;inset:0;
  width:100%;height:100%;
  object-fit:cover;
  opacity:.52;
}
.hero-mask{
  position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(10,12,18,.68) 0%,rgba(10,12,18,.9) 58%,#0A0C12 100%),
    linear-gradient(120deg,rgba(18,226,192,.2) 0%,rgba(139,92,246,.14) 52%,rgba(255,77,141,.18) 100%);
}
.hero-inner{position:relative;z-index:2;}

.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--text-2);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb span{color:var(--text-3);}
.breadcrumb .current{color:var(--text-1);}

.eyebrow{
  display:inline-block;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:1px;
  color:var(--primary);
  border-left:3px solid var(--primary);
  padding-left:10px;
  margin-bottom:16px;
}

.cat-hero h1{max-width:900px;}
.hero-sub{
  margin-top:16px;
  max-width:720px;
  font-size:17px;
  color:var(--text-2);
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-soft{background:var(--bg-soft);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);}
.section-head{max-width:780px;margin-bottom:44px;}
.section-head h2{margin-bottom:12px;}
.section-head p{font-size:16px;color:var(--text-2);}

/* ============ 数据统计条 ============ */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.stat-item{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:24px 26px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background-color .2s ease;
}
.stat-item:hover{
  transform:translateY(-4px);
  background:var(--bg-card-hover);
  border-color:rgba(18,226,192,.4);
  box-shadow:var(--shadow-glow);
}
.stat-num{
  font-family:var(--mono);
  font-size:32px;
  font-weight:700;
  line-height:1.2;
  background:var(--grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.stat-label{font-size:14px;color:var(--text-1);margin-top:6px;}
.stat-note{font-size:12px;color:var(--text-3);margin-top:2px;}

/* ============ 流程单列宽卡 ============ */
.flow-list{display:flex;flex-direction:column;gap:20px;}
.flow-card{
  display:grid;
  grid-template-columns:88px 1fr;
  gap:26px;
  padding:28px;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background-color .2s ease;
}
.flow-card:hover{
  transform:translateY(-4px);
  background:var(--bg-card-hover);
  border-color:rgba(18,226,192,.4);
  box-shadow:var(--shadow-glow);
}
.flow-index{
  width:72px;height:72px;
  border-radius:20px;
  display:grid;place-items:center;
  font-family:var(--mono);
  font-size:26px;
  font-weight:700;
  color:var(--primary);
  background:rgba(18,226,192,.07);
  border:1px solid rgba(18,226,192,.28);
}
.flow-body h3{margin-bottom:8px;}
.flow-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px;}
.flow-body p{font-size:15px;}
.flow-points{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
.flow-points li{
  position:relative;
  padding-left:22px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.75;
}
.flow-points li::before{
  content:"";
  position:absolute;
  left:0;top:10px;
  width:11px;height:6px;
  border-left:2px solid var(--primary);
  border-bottom:2px solid var(--primary);
  transform:rotate(-45deg);
}

/* ============ 设备参数面板 ============ */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:40px;
  align-items:center;
}
.media-card{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.media-card img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;border-radius:inherit;}
.media-card::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,18,.15) 0%,rgba(10,12,18,.72) 100%);
}
.media-card .media-tag{
  position:absolute;
  left:18px;bottom:16px;
  z-index:2;
  font-size:13px;
  color:var(--text-1);
  font-family:var(--mono);
}

.spec-table{
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  background:var(--bg-card);
}
.spec-row{
  display:grid;
  grid-template-columns:1.1fr 1fr 1fr 1.2fr;
  border-top:1px solid var(--line-soft);
  transition:background-color .18s ease;
}
.spec-row:first-child{border-top:none;}
.spec-row:hover{background:rgba(18,226,192,.05);}
.spec-row.head{
  background:rgba(18,226,192,.06);
  border-top:2px solid var(--primary);
  font-family:var(--mono);
  font-size:12px;
  color:var(--primary);
}
.spec-row div{padding:16px 18px;font-size:14px;color:var(--text-2);}
.spec-row.head div{color:var(--primary);font-weight:600;}
.spec-row .cell-key{color:var(--text-1);font-weight:600;}
.cell-label{display:none;}

/* ============ 安全清单一节 ============ */
.two-col{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:40px;
  align-items:start;
}
.check-list{display:flex;flex-direction:column;gap:14px;}
.check-list li{
  display:flex;
  gap:14px;
  padding:18px 20px;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  font-size:15px;
  color:var(--text-2);
  line-height:1.75;
  transition:border-color .18s ease,background-color .18s ease,transform .18s ease;
}
.check-list li:hover{border-color:rgba(18,226,192,.4);background:var(--bg-card-hover);transform:translateY(-2px);}
.check-list li b{color:var(--text-1);font-weight:600;}
.dot{
  flex:none;
  width:22px;height:22px;
  margin-top:5px;
  border-radius:50%;
  display:grid;place-items:center;
  background:rgba(18,226,192,.12);
  border:1px solid rgba(18,226,192,.45);
  color:var(--primary);
  font-size:12px;
  font-family:var(--mono);
}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:960px;}
.faq-item{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  transition:border-color .2s ease,background-color .2s ease;
}
.faq-item:hover{border-color:rgba(18,226,192,.35);}
.faq-item.open{border-color:rgba(18,226,192,.5);background:var(--bg-card-hover);}
.faq-q{
  width:100%;
  min-height:52px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:14px 22px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text-1);
  transition:color .18s ease;
}
.faq-item.open .faq-q{
  border-left:3px solid var(--primary);
  background:rgba(255,255,255,.03);
  padding-left:19px;
}
.faq-icon{
  position:relative;
  flex:none;
  width:18px;height:18px;
  transition:transform .18s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--primary);
  border-radius:2px;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;transition:transform .18s ease;}
.faq-item.open .faq-icon::after{transform:scaleY(0);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
.faq-item.open .faq-a{max-height:360px;}
.faq-a-inner{padding:0 22px 20px;font-size:15px;color:var(--text-2);}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-xl);
  padding:40px 44px;
  background:var(--grad);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:30px;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-80px;top:-90px;
  width:260px;height:260px;
  border-radius:50%;
  background:rgba(10,12,18,.22);
}
.cta-copy{position:relative;z-index:2;max-width:640px;}
.cta-copy h2{color:#06131A;font-size:26px;margin-bottom:8px;}
.cta-copy p{color:rgba(6,19,26,.82);font-size:15px;}
.cta-actions{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  background:#080A10;
  border-top:1px solid var(--line-soft);
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.site-footer p{font-size:14px;color:var(--text-3);line-height:1.85;}
.site-footer h4{font-size:15px;color:var(--text-1);margin-bottom:16px;}
.footer-list{display:flex;flex-direction:column;gap:10px;}
.footer-list li{font-size:14px;color:var(--text-3);}
.footer-list a{color:var(--text-2);transition:color .18s ease;}
.footer-list a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid var(--line-soft);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom p{font-size:12px;color:var(--text-3);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .spec-row{grid-template-columns:1fr 1fr;}
  .spec-row div:nth-child(n+3){border-top:1px solid var(--line-soft);}
  .footer-grid{grid-template-columns:1fr 1fr;}
}

@media (max-width:1023px){
  .nav-links a{padding:8px 10px;font-size:14px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .two-col{grid-template-columns:1fr;gap:32px;}
  .section{padding:72px 0;}
}

@media (max-width:767px){
  body{font-size:15px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:18px;}

  .container{padding:0 16px;}
  .nav-inner{padding:0 16px;gap:12px;height:64px;}

  .nav-links{
    position:fixed;
    top:64px;left:0;right:0;bottom:0;
    z-index:85;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:16px;
    background:#0A0C12;
    transform:translateX(-100%);
    transition:transform .24s ease;
    overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-links a{
    height:48px;
    padding:0 16px;
    border-radius:var(--r-md);
    font-size:16px;
    color:var(--text-2);
  }
  .nav-links a.active{
    background:rgba(18,226,192,.06);
    border-left:3px solid var(--primary);
    text-shadow:none;
  }
  .nav-links a.active::after{display:none;}

  .btn-login{display:none;}
  .nav-toggle{display:inline-flex;}

  .cat-hero{padding:44px 0 56px;}
  .hero-sub{font-size:15px;}
  .hero-cta .btn{flex:1 1 100%;}

  .section{padding:56px 0;}
  .section-head{margin-bottom:28px;}

  .stat-strip{grid-template-columns:1fr;gap:14px;}

  .flow-card{grid-template-columns:1fr;gap:16px;padding:22px;}
  .flow-index{width:56px;height:56px;font-size:20px;border-radius:16px;}

  .spec-table{border:none;background:transparent;}
  .spec-row{
    display:block;
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    background:var(--bg-card);
    margin-bottom:14px;
    padding:6px 0;
  }
  .spec-row.head{display:none;}
  .spec-row div{
    display:flex;
    justify-content:space-between;
    gap:14px;
    padding:10px 18px;
    border-top:none;
  }
  .spec-row div:nth-child(n+2){border-top:1px dashed var(--line-soft);}
  .cell-label{
    display:inline-block;
    font-family:var(--mono);
    font-size:12px;
    color:var(--text-3);
    flex:none;
  }

  .cta-band{
    flex-direction:column;
    align-items:flex-start;
    padding:28px 22px;
  }
  .cta-copy h2{font-size:21px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}

  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

@media (max-width:520px){
  h1{font-size:25px;}
  .hero-badges .badge{height:26px;font-size:11px;padding:0 11px;}
  .stat-num{font-size:27px;}
  .flow-card{padding:18px;}
  .faq-q{font-size:15px;padding:12px 18px;}
  .faq-item.open .faq-q{padding-left:15px;}
  .faq-a-inner{padding:0 18px 18px;}
  .cta-band{border-radius:var(--r-lg);}
}