/* roulang page: index */
:root{
  --bg:#080B0A;
  --surface:#0F1513;
  --card:#141C1A;
  --card-hover:#1B2523;
  --line:rgba(180,255,222,.12);
  --line-strong:rgba(180,255,222,.24);
  --neon:#4FE3A8;
  --neon-dim:#2BB98A;
  --amber:#FFB84D;
  --coral:#FF6B6B;
  --text:#E8F2EE;
  --text-2:#A7B7B1;
  --text-3:#6E807A;
  --radius:14px;
  --radius-sm:10px;
  --glow:0 0 0 1px rgba(79,227,168,.35),0 10px 32px -12px rgba(79,227,168,.45);
  --shadow:0 18px 44px -28px rgba(0,0,0,.9);
  --ease:cubic-bezier(.2,.7,.3,1);
  --num:'DIN Alternate','JetBrains Mono',ui-monospace,SFMono-Regular,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
.page{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
.page img{display:block;max-width:100%}
.page a{color:inherit;text-decoration:none}
.page button{font-family:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.nums{font-family:var(--num);font-variant-numeric:tabular-nums}

/* header */
.site-header{position:sticky;top:0;z-index:60;height:68px;background:rgba(8,11,10,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:12px;height:36px}
.brand-mark{width:8px;height:8px;border-radius:2px;background:var(--neon);box-shadow:0 0 12px rgba(79,227,168,.9);flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:20px;font-weight:700;color:var(--text);letter-spacing:.02em}
.brand-sub{font-size:12px;letter-spacing:.18em;color:var(--text-2);margin-top:2px}
.nav-links{display:none;align-items:center;gap:30px}
.nav-link{position:relative;font-size:15px;color:var(--text-2);padding:6px 0;transition:color .2s var(--ease)}
.nav-link:hover{color:var(--text)}
.nav-link.is-active{color:var(--neon)}
.nav-link.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--neon);box-shadow:0 0 10px rgba(79,227,168,.85)}
.nav-cta{display:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.btn:focus-visible{outline:2px solid var(--neon);outline-offset:3px}
.btn-primary{background:var(--neon);color:#06120D;box-shadow:0 8px 24px -14px rgba(79,227,168,.9)}
.btn-primary:hover{background:#63f0b8;transform:translateY(-1px);box-shadow:var(--glow)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--neon);border-color:rgba(79,227,168,.55)}
.btn-ghost:hover{background:rgba(79,227,168,.12);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;color:var(--neon)}
.text-link .arrow{transition:transform .2s var(--ease)}
.text-link:hover .arrow{transform:translateX(4px)}
.burger{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--card);color:var(--text)}
.burger:hover{border-color:rgba(79,227,168,.45);color:var(--neon)}
.overlay{position:fixed;inset:0;background:rgba(4,7,6,.68);opacity:0;pointer-events:none;transition:opacity .22s var(--ease);z-index:70}
.overlay.is-open{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);background:var(--surface);border-left:1px solid var(--line);transform:translateX(100%);transition:transform .24s var(--ease);z-index:80;padding:20px;display:flex;flex-direction:column}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:transparent;color:var(--text-2);font-size:18px;line-height:1}
.drawer-close:hover{color:var(--neon);border-color:rgba(79,227,168,.45)}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px}
.drawer-link{display:flex;align-items:center;height:52px;border-bottom:1px solid var(--line);font-size:16px;color:var(--text-2)}
.drawer-link:hover,.drawer-link.is-active{color:var(--neon)}
.drawer .btn{margin-top:auto;width:100%}
@media (min-width:1024px){
  .nav-links{display:flex}
  .nav-cta{display:inline-flex}
  .burger{display:none}
}

/* hero */
.hero{position:relative;padding:64px 0 84px;overflow:hidden;border-bottom:1px solid var(--line)}
.hero::before{content:"";position:absolute;top:-160px;right:-80px;width:520px;height:520px;background:radial-gradient(circle,rgba(79,227,168,.14),transparent 62%);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
.hero-copy{max-width:620px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:999px;background:rgba(255,184,77,.12);color:var(--amber);font-size:12px;letter-spacing:.08em}
.hero-title{margin:20px 0 0;font-size:clamp(28px,4.2vw,44px);line-height:1.22;font-weight:700;letter-spacing:0}
.hero-sub{margin:16px 0 0;font-size:17px;color:var(--text-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;border:1px solid var(--line);font-size:13px;color:var(--text-2)}
.tag .dot{width:6px;height:6px;border-radius:50%;background:var(--neon)}
.hero-media{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line);background:var(--surface);aspect-ratio:4/3;box-shadow:var(--shadow)}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(to bottom,rgba(8,11,10,0) 42%,rgba(8,11,10,.58) 100%);pointer-events:none}
.hero-float{position:absolute;right:18px;bottom:18px;z-index:2;padding:12px 16px;border-radius:12px;background:rgba(18,26,24,.94);border:1px solid rgba(79,227,168,.35);box-shadow:var(--glow)}
.hero-float .float-num{font-family:var(--num);font-variant-numeric:tabular-nums;font-size:22px;font-weight:700;color:var(--neon);line-height:1.2}
.hero-float .float-label{font-size:12px;color:var(--text-2);margin-top:2px}
@media (min-width:1024px){
  .hero{padding:76px 0 96px}
  .hero-grid{grid-template-columns:minmax(0,620px) 1fr;gap:52px}
}
@media (max-width:767px){
  .hero-media{aspect-ratio:auto;height:240px}
}

/* sections */
.section{padding:56px 0;border-bottom:1px solid var(--line)}
.section:last-of-type{border-bottom:0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-title{margin:10px 0 0;font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:650}
.section-sub{margin:0;font-size:14px;color:var(--text-3);max-width:420px}
@media (min-width:768px){
  .section{padding:96px 0}
  .section-head{margin-bottom:40px}
}

/* stats */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.stat-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:border-color .2s var(--ease),transform .2s var(--ease),background-color .2s var(--ease)}
.stat-card:hover{border-color:rgba(79,227,168,.35);background:var(--card-hover);transform:translateY(-2px)}
.stat-line{width:36px;height:2px;border-radius:2px;background:var(--neon);box-shadow:0 0 10px rgba(79,227,168,.8);margin-bottom:18px}
.stat-num{font-family:var(--num);font-variant-numeric:tabular-nums;font-size:clamp(26px,3.4vw,38px);font-weight:700;line-height:1.1;color:var(--text)}
.stat-label{font-size:13px;color:var(--text-2);margin-top:6px}
.stat-trend{font-size:12px;color:var(--amber);margin-top:14px}
.stat-trend.is-down{color:var(--coral)}
@media (min-width:768px){.stats{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.stats{grid-template-columns:repeat(4,1fr);gap:20px}}

/* bento */
.bento{display:grid;grid-template-columns:1fr;gap:18px}
.bento-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:border-color .2s var(--ease),transform .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease)}
.bento-card:hover{border-color:rgba(79,227,168,.35);background:var(--card-hover);transform:translateY(-2px);box-shadow:var(--shadow)}
.bento-num{font-family:var(--num);font-size:13px;color:var(--text-3);letter-spacing:.06em}
.bento-title{margin:12px 0 0;font-size:18px;font-weight:650;line-height:1.4}
.bento-text{margin:10px 0 0;font-size:14px;line-height:1.75;color:var(--text-2)}
.bento-arrow{margin-top:auto;padding-top:18px;font-size:15px;color:var(--neon)}
.bento-card:hover .bento-arrow{transform:translateX(4px)}
.bento-arrow{transition:transform .2s var(--ease)}
.bento-media{margin-bottom:18px;border-radius:12px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/9}
.bento-media img{width:100%;height:100%;object-fit:cover}
@media (min-width:768px){
  .bento{grid-template-columns:repeat(2,1fr);gap:20px}
  .bento-card.is-wide{grid-column:span 2}
}
@media (min-width:1024px){
  .bento{grid-template-columns:repeat(4,1fr)}
  .bento-card{padding:26px}
  .bento-card.is-wide{grid-column:span 2}
  .bento-card.is-wide .bento-text{max-width:92%}
}

/* compare */
.compare{display:grid;grid-template-columns:1fr;gap:18px}
.compare-col{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.compare-col.is-muted{border-color:rgba(255,107,107,.26)}
.compare-col.is-neon{border-color:rgba(79,227,168,.42);box-shadow:0 0 0 1px rgba(79,227,168,.18)}
.compare-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.compare-title{font-size:16px;font-weight:650}
.compare-col.is-muted .compare-title{color:#f0a3a3}
.compare-col.is-neon .compare-title{color:var(--neon)}
.pct{font-family:var(--num);font-variant-numeric:tabular-nums;font-size:26px;font-weight:700}
.compare-col.is-muted .pct{color:var(--coral)}
.compare-col.is-neon .pct{color:var(--neon)}
.bar{height:8px;border-radius:99px;background:rgba(255,255,255,.06);overflow:hidden;margin:16px 0 20px}
.bar span{display:block;height:100%;border-radius:99px}
.bar.is-muted span{width:38%;background:linear-gradient(90deg,rgba(255,107,107,.5),rgba(255,107,107,.9))}
.bar.is-neon span{width:92%;background:linear-gradient(90deg,rgba(43,185,138,.6),var(--neon))}
.compare-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.compare-list li{position:relative;padding-left:20px;font-size:14px;line-height:1.7;color:var(--text-2)}
.compare-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%}
.compare-col.is-muted .compare-list li::before{background:rgba(255,107,107,.7)}
.compare-col.is-neon .compare-list li::before{background:var(--neon);box-shadow:0 0 8px rgba(79,227,168,.8)}
.compare-mid{display:flex;align-items:center;justify-content:center}
.compare-badge{padding:6px 14px;border-radius:999px;border:1px solid var(--line-strong);font-size:12px;letter-spacing:.08em;color:var(--text-2);background:var(--surface)}
.table-list{margin-top:24px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.table-row{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:14px;padding:16px 20px;font-size:14px;border-bottom:1px solid var(--line);color:var(--text-2)}
.table-row:last-child{border-bottom:0}
.table-row.row-head{background:var(--card);color:var(--text);font-size:13px;letter-spacing:.04em}
.table-row:not(.row-head):hover{background:var(--card-hover)}
.table-row .c-neon{color:var(--neon)}
@media (min-width:768px){
  .compare{grid-template-columns:1fr auto 1fr;align-items:stretch;gap:22px}
}
@media (max-width:767px){
  .compare-mid{order:0;margin:2px 0}
  .table-row{grid-template-columns:1fr;gap:6px;padding:16px}
  .table-row.row-head{display:none}
  .table-row .c-dim::before{content:"自行摸索：";color:var(--text-3)}
  .table-row .c-neon::before{content:"按指引操作：";color:var(--text-3)}
}

/* proof */
.proof-grid{display:grid;grid-template-columns:1fr;gap:18px}
.proof-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.proof-text{margin:0;font-size:15px;line-height:1.8;color:var(--text)}
.proof-who{margin-top:16px;font-size:13px;color:var(--text-3)}
.proof-score{margin-top:14px;font-family:var(--num);font-size:13px;color:var(--amber);letter-spacing:.04em}
@media (min-width:768px){.proof-grid{grid-template-columns:repeat(3,1fr)}}

/* latest / cms */
.post-feature{display:grid;grid-template-columns:1fr;gap:22px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:border-color .2s var(--ease),transform .2s var(--ease),background-color .2s var(--ease)}
.post-feature:hover{border-color:rgba(79,227,168,.35);background:var(--card-hover);transform:translateY(-2px)}
.post-feature-media{border-radius:12px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10}
.post-feature-media img{width:100%;height:100%;object-fit:cover}
.post-feature-body{display:flex;flex-direction:column}
.post-title{margin:12px 0 0;font-size:17px;font-weight:650;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-desc{margin:10px 0 0;font-size:14px;line-height:1.75;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{margin-top:auto;padding-top:16px;font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;font-size:12px;line-height:1.5}
.badge-amber{background:rgba(255,184,77,.12);color:var(--amber)}
.badge-neon{background:rgba(79,227,168,.12);color:var(--neon)}
.badge-ghost{border:1px solid var(--line);color:var(--text-3)}
.post-grid{display:grid;grid-template-columns:1fr;gap:18px;margin-top:20px}
.post-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:border-color .2s var(--ease),transform .2s var(--ease),background-color .2s var(--ease)}
.post-card:hover{border-color:rgba(79,227,168,.35);background:var(--card-hover);transform:translateY(-2px)}
.post-thumb{border-radius:12px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/9;margin-bottom:16px}
.post-thumb img{width:100%;height:100%;object-fit:cover}
.empty-state{border:1px dashed rgba(180,255,222,.24);border-radius:var(--radius);padding:48px 24px;text-align:center;background:rgba(20,28,26,.5)}
.empty-icon{width:44px;height:44px;margin:0 auto 14px;border-radius:12px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--text-3);font-size:18px}
.empty-title{margin:0;font-size:15px;color:var(--text-2)}
.empty-note{margin:8px 0 0;font-size:13px;color:var(--text-3)}
@media (min-width:768px){
  .post-feature{grid-template-columns:minmax(0,320px) 1fr;padding:24px}
  .post-grid{grid-template-columns:repeat(2,1fr);gap:20px}
}

/* faq */
.faq-list{max-width:860px;display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:12px;background:var(--card);transition:border-color .2s var(--ease),background-color .2s var(--ease)}
.faq-item:hover{border-color:rgba(79,227,168,.28)}
.faq-item[open]{border-color:rgba(79,227,168,.38);border-left:2px solid var(--neon);background:var(--card-hover)}
.faq-q{display:flex;align-items:center;gap:16px;padding:18px 20px;cursor:pointer;list-style:none;font-size:16px;font-weight:600;color:var(--text)}
.faq-q::-webkit-details-marker{display:none}
.faq-index{font-family:var(--num);font-size:13px;color:var(--text-3);flex:none}
.faq-plus{margin-left:auto;flex:none;width:20px;height:20px;position:relative;transition:transform .2s var(--ease);color:var(--neon)}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-plus::before{left:0;right:0;top:9px;height:2px}
.faq-plus::after{top:0;bottom:0;left:9px;width:2px}
.faq-item[open] .faq-plus{transform:rotate(45deg)}
.faq-a{padding:0 20px 20px 52px;font-size:15px;line-height:1.85;color:var(--text-2)}
@media (max-width:520px){
  .faq-q{padding:16px;font-size:15px;gap:12px}
  .faq-a{padding:0 16px 18px 44px;font-size:14px}
}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr;gap:28px}
.contact-info{max-width:460px}
.contact-title{margin:10px 0 0;font-size:clamp(22px,2.6vw,30px);font-weight:650;line-height:1.3}
.contact-text{margin:14px 0 0;font-size:15px;line-height:1.8;color:var(--text-2)}
.trust-list{list-style:none;margin:24px 0 0;padding:0;display:flex;flex-direction:column;gap:14px}
.trust-list li{position:relative;padding-left:20px;font-size:15px;color:var(--text)}
.trust-list li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;background:var(--neon);box-shadow:0 0 8px rgba(79,227,168,.85)}
.contact-meta{margin-top:28px;padding-top:20px;border-top:1px solid var(--line);font-size:14px;color:var(--text-3);display:flex;flex-direction:column;gap:8px}
.form-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.form-row{display:grid;grid-template-columns:1fr;gap:16px}
.field{display:flex;flex-direction:column;margin-bottom:16px}
.label{font-size:13px;color:var(--text-2);margin-bottom:8px}
.input{height:46px;padding:0 14px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--surface);color:var(--text);font-size:15px;width:100%;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.input::placeholder{color:var(--text-3)}
.input:focus{outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(79,227,168,.16)}
textarea.input{height:auto;min-height:110px;padding:12px 14px;line-height:1.7;resize:vertical}
select.input{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-2);line-height:1.7}
.check-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--neon);flex:none}
.form-card .btn{width:100%;margin-top:8px}
.form-success{display:none;margin-top:16px;padding:14px 16px;border-radius:var(--radius-sm);border:1px solid rgba(79,227,168,.5);background:rgba(79,227,168,.1);color:var(--neon);font-size:14px}
.form-success.is-visible{display:block}
@media (min-width:768px){
  .form-row{grid-template-columns:1fr 1fr}
  .form-card{padding:28px}
}
@media (min-width:1024px){
  .contact-grid{grid-template-columns:1fr 1.05fr;gap:48px}
}

/* footer */
.site-footer{position:relative;background:var(--surface);padding:56px 0 26px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,rgba(79,227,168,.75),rgba(79,227,168,0))}
.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px 24px}
.footer-brand{grid-column:1 / -1;max-width:340px}
.footer-desc{margin:16px 0 0;font-size:14px;line-height:1.8;color:var(--text-2)}
.footer-contact{margin:16px 0 0;font-size:14px;color:var(--text-3);display:flex;flex-direction:column;gap:6px}
.footer-title{font-size:14px;font-weight:650;color:var(--text);margin:0 0 14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-link{font-size:14px;color:var(--text-2);transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-link:hover{color:var(--text);transform:translateX(2px)}
.footer-bottom{grid-column:1 / -1;margin-top:34px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;font-size:13px;color:var(--text-3)}
@media (min-width:768px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}
  .footer-brand{grid-column:auto}
}
@media (max-width:520px){
  .site-footer{padding:44px 0 22px}
  .footer-bottom{justify-content:center;text-align:center}
}

/* roulang page: article */
:root{
  --bg:#080B0A;
  --bg-2:#0F1513;
  --card:#141C1A;
  --card-hover:#1B2523;
  --line:rgba(180,255,222,.12);
  --line-strong:rgba(79,227,168,.35);
  --neon:#4FE3A8;
  --neon-dim:#2BB98A;
  --amber:#FFB84D;
  --coral:#FF6B6B;
  --text:#E8F2EE;
  --muted:#A7B7B1;
  --faint:#6E807A;
  --radius:14px;
  --radius-sm:10px;
  --glow:0 0 0 1px rgba(79,227,168,.35),0 10px 32px -12px rgba(79,227,168,.45);
  --shadow:0 18px 40px -24px rgba(0,0,0,.9);
  --font:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --mono:'DIN Alternate','JetBrains Mono',ui-monospace,SFMono-Regular,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:12px}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:0;list-style:none}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--text)}
:focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:6px}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  height:68px;
  background:rgba(8,11,10,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  height:36px;
}
.brand-mark{
  width:8px;
  height:26px;
  border-radius:2px;
  background:var(--neon);
  box-shadow:0 0 14px rgba(79,227,168,.7);
  flex:none;
}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.06em;color:var(--text)}
.brand-sub{font-size:12px;letter-spacing:.18em;color:var(--muted);margin-top:3px}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 12px;
  font-size:15px;
  color:var(--muted);
  border-radius:8px;
  transition:color .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:transparent;
  transition:background .2s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.03)}
.nav-link.is-active{color:var(--neon)}
.nav-link.is-active::after{background:var(--neon);box-shadow:0 0 10px rgba(79,227,168,.75)}
.header-actions{display:flex;align-items:center;gap:12px}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{
  background:var(--neon);
  color:#05100C;
  box-shadow:0 8px 24px -14px rgba(79,227,168,.9);
}
.btn-primary:hover{transform:translateY(-1px);background:#66EDB7;box-shadow:var(--glow)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:transparent;
  color:var(--neon);
  border-color:var(--line-strong);
}
.btn-ghost:hover{background:rgba(79,227,168,.12);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--muted);
  transition:color .2s var(--ease);
}
.btn-text .arrow{transition:transform .2s var(--ease)}
.btn-text:hover{color:var(--text)}
.btn-text:hover .arrow{transform:translateX(4px)}
.menu-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:10px;
  color:var(--text);
  cursor:pointer;
}
.menu-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:currentColor;
  position:relative;
}
.menu-toggle span::before,
.menu-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:currentColor;
}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}

/* drawer */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(4,7,6,.7);
  opacity:0;
  visibility:hidden;
  transition:opacity .22s var(--ease),visibility .22s var(--ease);
  z-index:70;
}
.drawer{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  width:min(320px,86vw);
  background:var(--bg-2);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform .24s var(--ease);
  z-index:80;
  padding:22px 20px;
  display:flex;
  flex-direction:column;
  gap:8px;
  overflow-y:auto;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{
  width:38px;height:38px;border-radius:9px;border:1px solid var(--line);
  background:transparent;color:var(--muted);font-size:20px;line-height:1;cursor:pointer;
}
.drawer-close:hover{color:var(--text);border-color:var(--line-strong)}
.drawer-link{
  display:flex;align-items:center;height:52px;padding:0 12px;
  border-radius:10px;color:var(--muted);font-size:15px;
  border:1px solid transparent;
}
.drawer-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.drawer-link.is-active{color:var(--neon);border-color:var(--line-strong);background:rgba(79,227,168,.08)}
.drawer .btn{margin-top:16px;width:100%}
body.is-locked{overflow:hidden}
.is-open .drawer{transform:translateX(0)}
.is-open .drawer-mask{opacity:1;visibility:visible}

/* ---------- page head ---------- */
.page-head{
  padding:36px 0 0;
  border-bottom:1px solid var(--line);
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--muted);
  margin-bottom:26px;
}
.breadcrumb .sep{color:var(--faint)}
.breadcrumb a{transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--neon)}
.breadcrumb .current{color:var(--text);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{max-width:760px;padding-bottom:34px}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:999px;
  font-size:12px;
  line-height:1.6;
  letter-spacing:.06em;
}
.badge-amber{background:rgba(255,184,77,.12);color:var(--amber)}
.badge-neon{background:rgba(79,227,168,.12);color:var(--neon)}
.badge-line{border:1px solid var(--line);color:var(--faint)}
.article-title{
  font-size:clamp(28px,4vw,40px);
  line-height:1.24;
  font-weight:700;
  margin-top:16px;
  overflow-wrap:break-word;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:18px;
  font-size:13px;
  color:var(--faint);
}
.article-meta .dot{color:var(--faint)}
.article-meta .mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.neon-rule{
  width:64px;
  height:2px;
  border-radius:2px;
  background:var(--neon);
  box-shadow:0 0 12px rgba(79,227,168,.7);
  margin-top:26px;
}

/* ---------- layout ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:24px;
  padding:48px 0 0;
}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:24px;align-items:start}
}
.article-main{min-width:0;max-width:760px}
.article-body{
  font-size:16px;
  line-height:1.9;
  color:var(--text);
}
.article-body > * + *{margin-top:1.2em}
.article-body h2{
  position:relative;
  margin-top:1.7em;
  margin-bottom:.6em;
  padding-left:14px;
  font-size:clamp(20px,2.2vw,26px);
  line-height:1.35;
  font-weight:650;
  color:var(--text);
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.3em;
  width:2px;
  height:18px;
  border-radius:2px;
  background:var(--neon);
  box-shadow:0 0 10px rgba(79,227,168,.6);
}
.article-body h3{
  margin-top:1.5em;
  margin-bottom:.5em;
  font-size:18px;
  line-height:1.5;
  font-weight:650;
  color:#CBDED6;
}
.article-body p{color:#D8E5E0}
.article-body a{color:var(--neon);border-bottom:1px solid rgba(79,227,168,.35)}
.article-body a:hover{border-bottom-color:var(--neon)}
.article-body ul,.article-body ol{
  padding-left:1.4em;
  line-height:1.85;
  color:var(--muted);
}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li::marker{color:var(--neon)}
.article-body li + li{margin-top:.4em}
.article-body blockquote{
  margin:1.4em 0;
  padding:20px;
  background:var(--card);
  border-left:3px solid var(--neon);
  border-radius:0 12px 12px 0;
  color:var(--muted);
}
.article-body img{
  width:100%;
  border:1px solid var(--line);
  border-radius:12px;
  margin:1.4em 0 .6em;
}
.article-body figcaption{
  font-size:13px;
  color:var(--faint);
  text-align:center;
}
.article-body code{
  font-family:var(--mono);
  font-size:13px;
  background:var(--card-hover);
  padding:2px 6px;
  border-radius:6px;
  color:var(--neon);
}
.article-body pre{
  background:var(--card-hover);
  border:1px solid var(--line);
  border-radius:12px;
  padding:18px;
  overflow-x:auto;
  font-size:13px;
  line-height:1.7;
}
.article-body pre code{background:none;padding:0;color:#CFE6DD}
.article-body table{
  width:100%;
  border-collapse:collapse;
  border:1px solid var(--line);
  font-size:14.5px;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:10px 14px;
  text-align:left;
}
.article-body th{background:var(--card);color:var(--text);font-weight:600}
.article-body tr:hover td{background:rgba(255,255,255,.03)}
.article-body hr{
  border:0;
  height:1px;
  background:var(--line);
  margin:2em 0;
}

/* empty state */
.empty-note{
  border:1px dashed rgba(180,255,222,.22);
  border-radius:var(--radius);
  padding:44px 24px;
  text-align:center;
  background:var(--bg-2);
}
.empty-note .empty-icon{
  width:44px;height:44px;margin:0 auto 16px;
  border-radius:12px;
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  color:var(--faint);
}
.empty-note h2{font-size:20px;font-weight:650}
.empty-note p{margin-top:8px;font-size:13px;color:var(--faint)}
.empty-note .btn{margin-top:20px}

/* ---------- toc ---------- */
.toc{display:none}
@media (min-width:1024px){
  .toc{display:block;position:sticky;top:92px}
}
.toc-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:20px;
}
.toc-title{
  display:flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.12em;color:var(--faint);
  margin-bottom:14px;
}
.toc-title::before{
  content:"";width:8px;height:8px;border-radius:2px;
  background:var(--neon);box-shadow:0 0 10px rgba(79,227,168,.7);
}
.toc-list{display:flex;flex-direction:column;gap:2px;font-size:14px}
.toc-link{
  display:block;
  padding:7px 10px;
  color:var(--muted);
  border-left:2px solid transparent;
  border-radius:0 6px 6px 0;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
  overflow-wrap:break-word;
}
.toc-link.is-sub{padding-left:22px;font-size:13.5px;color:var(--faint)}
.toc-link:hover{color:var(--text);background:rgba(255,255,255,.03)}
.toc-link.is-current{color:var(--neon);border-left-color:var(--neon);background:rgba(79,227,168,.07)}
.toc-side-note{
  margin-top:16px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:18px;
  background:var(--bg-2);
}
.toc-side-note h2{font-size:15px;font-weight:650}
.toc-side-note p{margin-top:8px;font-size:13px;line-height:1.75;color:var(--muted)}

/* ---------- related ---------- */
.section{
  padding:64px 0;
  border-top:1px solid var(--line);
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:28px;
  flex-wrap:wrap;
}
.section-title{
  font-size:clamp(22px,2.6vw,28px);
  line-height:1.3;
  font-weight:650;
}
.section-desc{margin-top:8px;font-size:14px;color:var(--muted);max-width:660px}
.card-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
}
@media (min-width:768px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1024px){
  .card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
.rel-card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.rel-card:hover{
  border-color:rgba(79,227,168,.35);
  transform:translateY(-2px);
  box-shadow:var(--shadow);
}
.rel-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
}
.rel-thumb img{
  width:100%;height:100%;object-fit:cover;border-radius:0;
}
.rel-thumb::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(to bottom,rgba(8,11,10,0) 40%,rgba(8,11,10,.55));
}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{
  font-size:17px;
  line-height:1.5;
  font-weight:650;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-body p{
  font-size:14px;
  line-height:1.75;
  color:var(--muted);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:6px;
  font-size:13px;
  color:var(--faint);
}
.rel-foot .num{color:var(--faint)}

/* ---------- cta ---------- */
.cta-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius);
  padding:26px 28px;
  background:linear-gradient(120deg,rgba(79,227,168,.10),rgba(20,28,26,.6) 60%);
  box-shadow:0 0 0 1px rgba(79,227,168,.12),0 18px 40px -30px rgba(79,227,168,.6);
}
.cta-bar p{font-size:16px;line-height:1.7;color:var(--text);max-width:640px}
.cta-bar span{display:block;font-size:13px;color:var(--muted);margin-top:6px}
.back-row{margin-top:24px;display:flex;flex-wrap:wrap;align-items:center;gap:16px;font-size:14px;color:var(--faint)}

/* ---------- footer ---------- */
.site-footer{
  margin-top:24px;
  background:var(--bg-2);
  border-top:1px solid var(--line);
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(79,227,168,.85),rgba(79,227,168,0));
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  padding:56px 0 0;
}
@media (min-width:640px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1024px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
}
.footer-desc{
  margin-top:16px;
  font-size:14px;
  line-height:1.8;
  color:var(--muted);
  max-width:320px;
}
.footer-contact{
  margin-top:16px;
  display:flex;
  flex-direction:column;
  gap:6px;
  font-size:13px;
  color:var(--faint);
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
}
.footer-title{
  font-size:13px;
  letter-spacing:.12em;
  color:var(--faint);
  margin-bottom:14px;
  font-weight:600;
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-link{
  font-size:14px;
  color:var(--muted);
  transition:color .2s var(--ease),transform .2s var(--ease);
  display:inline-block;
}
.footer-link:hover{color:var(--text);transform:translateX(2px)}
.footer-bottom{
  grid-column:1/-1;
  border-top:1px solid var(--line);
  margin-top:36px;
  padding:20px 0 28px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--faint);
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .article-main{max-width:none}
}
@media (max-width:767px){
  .nav-links{display:none}
  .header-actions .btn-primary{display:none}
  .menu-toggle{display:inline-flex}
  .container{padding:0 20px}
  .page-head{padding-top:26px}
  .article-layout{padding-top:32px}
  .section{padding:56px 0}
  .article-title{font-size:clamp(26px,7vw,32px)}
  .rel-body{padding:18px 18px 20px}
  .cta-bar{padding:20px;flex-direction:column;align-items:flex-start}
  .cta-bar .btn{width:100%}
  .footer-grid{padding-top:44px;gap:28px}
  .footer-bottom{margin-top:24px;justify-content:center;text-align:center}
}
@media (max-width:519px){
  .article-meta{font-size:12.5px}
  .article-body{font-size:15.5px}
  .card-grid{gap:18px}
}

/* roulang page: category1 */
:root{
    --bg:#080B0A;
    --bg-soft:#0F1513;
    --card:#141C1A;
    --card-hover:#1B2523;
    --line:rgba(180,255,222,0.12);
    --neon:#4FE3A8;
    --neon-dim:#2BB98A;
    --amber:#FFB84D;
    --coral:#FF6B6B;
    --text:#E8F2EE;
    --muted:#A7B7B1;
    --faint:#6E807A;
    --radius-sm:10px;
    --radius:14px;
    --radius-lg:18px;
    --glow:0 0 0 1px rgba(79,227,168,.35), 0 10px 32px -12px rgba(79,227,168,.45);
    --shadow-card:0 10px 30px -22px rgba(0,0,0,.9);
    --font-cn:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
    --font-num:'DIN Alternate','JetBrains Mono',ui-monospace,SFMono-Regular,monospace;
    --ease:cubic-bezier(.2,.7,.3,1);
    --header-h:68px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  html body{
    margin:0;
    padding:0;
    background:var(--bg);
    color:var(--text);
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  body .container{
    width:100%;
    max-width:1200px;
    margin-inline:auto;
    padding-inline:24px;
  }
  img{max-width:100%;display:block;border-radius:12px;}
  a{color:inherit;text-decoration:none;transition:color .2s var(--ease),transform .2s var(--ease);}
  button{font-family:inherit;cursor:pointer;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  :focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:6px;}

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    height:var(--header-h);
    background:rgba(8,11,10,.82);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{
    height:100%;
    display:flex;
    align-items:center;
    gap:28px;
    justify-content:space-between;
  }
  .brand{
    display:inline-flex;
    align-items:center;
    gap:10px;
    height:36px;
    flex-shrink:0;
  }
  .brand-mark{
    width:8px;
    height:8px;
    border-radius:2px;
    background:var(--neon);
    box-shadow:0 0 10px rgba(79,227,168,.9);
    display:inline-block;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.05;}
  .brand-name{
    font-family:var(--font-num);
    font-size:19px;
    font-weight:700;
    letter-spacing:.06em;
    color:var(--text);
  }
  .brand-sub{
    font-size:12px;
    letter-spacing:.18em;
    color:var(--muted);
    margin-top:2px;
  }
  .nav-links{
    display:flex;
    align-items:center;
    gap:6px;
    margin-left:auto;
  }
  .nav-link{
    position:relative;
    display:inline-block;
    padding:10px 14px;
    font-size:15px;
    color:var(--muted);
    border-radius:8px;
    white-space:nowrap;
  }
  .nav-link:hover{color:var(--text);background:rgba(79,227,168,.06);}
  .nav-link::after{
    content:"";
    position:absolute;
    left:14px;
    right:14px;
    bottom:2px;
    height:2px;
    border-radius:2px;
    background:transparent;
    transition:background .2s var(--ease),box-shadow .2s var(--ease);
  }
  .nav-link.is-active{color:var(--neon);}
  .nav-link.is-active::after{
    background:var(--neon);
    box-shadow:0 0 12px rgba(79,227,168,.75);
  }
  .header-actions{display:flex;align-items:center;gap:12px;}
  .nav-toggle{
    display:none;
    width:42px;height:42px;
    align-items:center;justify-content:center;
    background:transparent;
    border:1px solid var(--line);
    border-radius:10px;
    color:var(--text);
  }
  .nav-toggle span{
    display:block;width:18px;height:2px;background:currentColor;position:relative;
  }
  .nav-toggle span::before,.nav-toggle span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
  }
  .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 22px;
    border-radius:var(--radius-sm);
    font-size:15px;
    font-weight:600;
    border:1px solid transparent;
    transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  }
  .btn-primary{
    background:var(--neon);
    color:#04120C;
    box-shadow:0 8px 24px -14px rgba(79,227,168,.9);
  }
  .btn-primary:hover{
    background:#63EDB6;
    transform:translateY(-1px);
    box-shadow:0 0 0 1px rgba(79,227,168,.5),0 14px 30px -14px rgba(79,227,168,.8);
  }
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{
    background:transparent;
    color:var(--neon);
    border-color:rgba(79,227,168,.45);
  }
  .btn-ghost:hover{background:rgba(79,227,168,.12);transform:translateY(-1px);}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;}
  .btn-block{width:100%;}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--neon);font-size:14px;font-weight:600;
  }
  .link-arrow .arrow{transition:transform .2s var(--ease);}
  .link-arrow:hover .arrow{transform:translateX(4px);}

  /* ============ 通用徽章 ============ */
  .badge{
    display:inline-flex;align-items:center;
    padding:4px 10px;border-radius:999px;
    font-size:12px;line-height:1.6;
    border:1px solid transparent;
  }
  .badge-amber{background:rgba(255,184,77,.12);color:var(--amber);}
  .badge-neon{background:rgba(79,227,168,.12);color:var(--neon);}
  .badge-muted{border-color:rgba(110,128,122,.55);color:var(--faint);}

  /* ============ 页头横幅 ============ */
  .page-hero{
    position:relative;
    overflow:hidden;
    border-bottom:1px solid var(--line);
    background:var(--bg-soft);
  }
  .page-hero-media{
    position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;
    background-position:center;
    opacity:.38;
  }
  .page-hero::after{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(8,11,10,.55) 0%,rgba(8,11,10,.86) 62%,rgba(8,11,10,.98) 100%);
    pointer-events:none;
  }
  .page-hero-inner{
    position:relative;
    z-index:2;
    padding:26px 0 56px;
  }
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:14px;color:var(--muted);
  }
  .breadcrumb a{color:var(--muted);}
  .breadcrumb a:hover{color:var(--neon);}
  .breadcrumb .sep{color:var(--faint);}
  .breadcrumb .current{color:var(--text);}
  .hero-title{
    margin-top:26px;
    font-size:clamp(28px,4.2vw,44px);
    line-height:1.22;
    font-weight:700;
    letter-spacing:0;
    max-width:820px;
  }
  .hero-lead{
    margin-top:18px;
    max-width:760px;
    font-size:16px;
    line-height:1.85;
    color:var(--muted);
  }
  .hero-meta{
    margin-top:24px;
    display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  }
  .hero-strip{
    width:64px;height:3px;border-radius:3px;
    background:var(--neon);
    box-shadow:0 0 14px rgba(79,227,168,.75);
    margin-top:26px;
  }

  /* ============ 板块 ============ */
  .section{padding:96px 0;}
  .section-tight{padding-top:72px;}
  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:24px;
    margin-bottom:36px;
    flex-wrap:wrap;
  }
  .section-title{
    font-size:clamp(22px,2.6vw,30px);
    line-height:1.3;
    font-weight:650;
    color:var(--text);
  }
  .section-desc{
    font-size:14px;
    line-height:1.75;
    color:var(--faint);
    max-width:420px;
  }
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-family:var(--font-num);
    font-size:12px;
    letter-spacing:.16em;
    color:var(--for-faint,var(--faint));
    margin-bottom:12px;
  }
  .eyebrow::before{
    content:"";width:18px;height:1px;background:var(--neon);display:inline-block;
  }
  .divider{height:1px;background:var(--line);border:0;margin:0;}

  /* ============ Bento 服务卡 ============ */
  .bento{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:24px;
  }
  .bcard{
    display:flex;
    flex-direction:column;
    gap:14px;
    padding:26px;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius);
    transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
  }
  .bcard:hover{
    background:var(--card-hover);
    border-color:rgba(79,227,168,.35);
    transform:translateY(-2px);
    box-shadow:var(--shadow-card);
  }
  .bcard-index{
    font-family:var(--font-num);
    font-size:13px;
    letter-spacing:.1em;
    color:var(--faint);
    font-variant-numeric:tabular-nums;
  }
  .bcard-title{
    font-size:18px;
    font-weight:650;
    line-height:1.4;
    color:var(--text);
  }
  .bcard-text{
    font-size:14px;
    line-height:1.75;
    color:var(--muted);
  }
  .bcard-foot{margin-top:auto;padding-top:8px;}
  .bcard-media{
    border-radius:12px;
    overflow:hidden;
    border:1px solid var(--line);
    position:relative;
    aspect-ratio:16/9;
    background:var(--bg-soft);
  }
  .bcard-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
  .bcard-media::after{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(8,11,10,0) 40%,rgba(8,11,10,.55) 100%);
  }
  .bcard-feature{grid-column:span 2;grid-row:span 2;}
  .bcard-wide{grid-column:span 2;}
  .accent-line{
    width:34px;height:2px;border-radius:2px;background:var(--neon);
    box-shadow:0 0 10px rgba(79,227,168,.6);
  }

  /* ============ 对照表 ============ */
  .table-shell{
    border:1px solid var(--line);
    border-radius:var(--radius);
    overflow:hidden;
    background:var(--card);
  }
  .cap-table{
    width:100%;
    border-collapse:collapse;
    font-size:14.5px;
  }
  .cap-table caption{
    caption-side:top;
    text-align:left;
    padding:18px 22px;
    color:var(--faint);
    font-size:13px;
    border-bottom:1px solid var(--line);
  }
  .cap-table thead th{
    background:rgba(27,37,35,.85);
    color:var(--text);
    font-weight:600;
    text-align:left;
    padding:16px 22px;
    font-size:14px;
    border-bottom:1px solid var(--line);
    white-space:nowrap;
  }
  .cap-table tbody td{
    padding:16px 22px;
    color:var(--muted);
    border-bottom:1px solid var(--line);
    vertical-align:top;
    line-height:1.75;
  }
  .cap-table tbody tr:last-child td{border-bottom:0;}
  .cap-table tbody tr:hover td{background:rgba(79,227,168,.045);color:var(--text);}
  .cap-table .cell-key{color:var(--text);font-weight:600;white-space:nowrap;}
  .cell-tag{
    display:inline-block;font-size:12px;padding:2px 9px;border-radius:999px;
    border:1px solid rgba(255,184,77,.4);color:var(--amber);
  }

  /* ============ 三步自检 ============ */
  .steps{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:24px;
  }
  .step{
    position:relative;
    padding:26px 26px 26px 26px;
    background:var(--bg-soft);
    border:1px solid var(--line);
    border-radius:var(--radius);
    transition:border-color .2s var(--ease),transform .2s var(--ease);
  }
  .step:hover{border-color:rgba(79,227,168,.35);transform:translateY(-2px);}
  .step-no{
    font-family:var(--font-num);
    font-size:13px;
    color:var(--neon);
    letter-spacing:.12em;
    font-variant-numeric:tabular-nums;
    display:inline-flex;align-items:center;gap:8px;
  }
  .step-no::after{content:"";width:22px;height:1px;background:rgba(79,227,168,.5);}
  .step h3{font-size:17px;font-weight:650;margin-top:12px;color:var(--text);line-height:1.45;}
  .step p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--muted);}

  /* ============ FAQ ============ */
  .faq-wrap{max-width:860px;margin-inline:auto;display:flex;flex-direction:column;gap:14px;}
  .faq-item{
    border:1px solid var(--line);
    border-radius:12px;
    background:var(--card);
    overflow:hidden;
    transition:border-color .2s var(--ease),background .2s var(--ease);
  }
  .faq-item[open]{border-color:rgba(79,227,168,.35);background:var(--card-hover);}
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    display:flex;
    align-items:center;
    gap:16px;
    padding:18px 22px;
    font-size:16.5px;
    color:var(--text);
    line-height:1.6;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-no{
    font-family:var(--font-num);
    font-size:13px;
    color:var(--faint);
    font-variant-numeric:tabular-nums;
    flex-shrink:0;
  }
  .faq-q{flex:1;}
  .faq-icon{
    position:relative;
    width:16px;height:16px;flex-shrink:0;
  }
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;background:var(--neon);border-radius:1px;
    transition:transform .2s var(--ease),opacity .2s var(--ease);
  }
  .faq-icon::before{left:0;top:7px;width:16px;height:2px;}
  .faq-icon::after{top:0;left:7px;width:2px;height:16px;}
  .faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0;}
  .faq-body{
    padding:0 22px 20px 60px;
    color:var(--muted);
    font-size:14.5px;
    line-height:1.85;
    border-left:2px solid transparent;
  }
  .faq-item[open] .faq-body{border-left-color:var(--neon);}
  .faq-body p+p{margin-top:10px;}

  /* ============ CTA 条 ============ */
  .cta-bar{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    flex-wrap:wrap;
    padding:32px 34px;
    border:1px solid rgba(79,227,168,.4);
    border-radius:var(--radius-lg);
    background:linear-gradient(120deg,rgba(79,227,168,.08),rgba(20,28,26,.6) 55%,rgba(20,28,26,.9));
    box-shadow:var(--glow);
  }
  .cta-bar h2{
    font-size:clamp(20px,2.2vw,26px);
    font-weight:650;
    line-height:1.35;
  }
  .cta-bar p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.75;max-width:560px;}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

  /* ============ 页脚 ============ */
  .site-footer{
    border-top:1px solid transparent;
    background:var(--bg-soft);
    position:relative;
    padding:64px 0 28px;
  }
  .site-footer::before{
    content:"";
    position:absolute;top:0;left:0;right:0;height:1px;
    background:linear-gradient(90deg,rgba(79,227,168,.85),rgba(79,227,168,.25) 40%,rgba(79,227,168,0) 100%);
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1fr;
    gap:32px;
  }
  .footer-desc{
    margin-top:16px;
    font-size:14px;
    line-height:1.8;
    color:var(--muted);
    max-width:330px;
  }
  .footer-contact{
    margin-top:16px;
    display:flex;flex-direction:column;gap:6px;
    font-size:13px;color:var(--faint);
  }
  .footer-title{
    font-size:14px;
    font-weight:650;
    color:var(--text);
    margin-bottom:16px;
    letter-spacing:.02em;
  }
  .footer-links{display:flex;flex-direction:column;gap:10px;}
  .footer-link{
    font-size:14px;
    color:var(--muted);
    display:inline-block;
    transition:color .2s var(--ease),transform .2s var(--ease);
  }
  .footer-link:hover{color:var(--text);transform:translateX(-2px);}
  .footer-bottom{
    grid-column:1/-1;
    margin-top:36px;
    padding-top:22px;
    border-top:1px solid var(--line);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    flex-wrap:wrap;
    font-size:13px;
    color:var(--faint);
  }

  /* ============ 移动抽屉 ============ */
  .drawer-mask{
    position:fixed;inset:0;
    background:rgba(4,8,7,.68);
    -webkit-backdrop-filter:blur(2px);
    backdrop-filter:blur(2px);
    opacity:0;visibility:hidden;
    transition:opacity .2s var(--ease),visibility .2s var(--ease);
    z-index:70;
  }
  .drawer{
    position:fixed;
    top:0;right:0;
    width:min(320px,86vw);
    height:100%;
    background:var(--bg-soft);
    border-left:1px solid var(--line);
    transform:translateX(100%);
    transition:transform .24s var(--ease);
    z-index:80;
    display:flex;
    flex-direction:column;
    padding:22px;
    gap:8px;
    overflow-y:auto;
  }
  body.drawer-open .drawer-mask{opacity:1;visibility:visible;}
  body.drawer-open .drawer{transform:translateX(0);}
  .drawer-head{
    display:flex;align-items:center;justify-content:space-between;
    padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:8px;
  }
  .drawer-close{
    width:38px;height:38px;border-radius:10px;
    background:transparent;border:1px solid var(--line);color:var(--text);
    display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;
  }
  .drawer .nav-link{line-height:52px;padding:0 6px;border-radius:8px;font-size:15px;}
  .drawer .nav-link::after{left:6px;right:6px;bottom:8px;}
  .drawer-cta{margin-top:16px;}

  /* ============ 响应式 ============ */
  @media (max-width:1024px){
    .section{padding:80px 0;}
    .bento{grid-template-columns:repeat(2,minmax(0,1fr));}
    .bcard-feature{grid-column:span 2;grid-row:auto;}
    .bcard-wide{grid-column:span 1;}
    .footer-grid{grid-template-columns:1fr 1fr;}
    .steps{grid-template-columns:1fr;}
    .page-hero-inner{padding:22px 0 44px;}
  }
  @media (max-width:900px){
    .nav-links{display:none;}
    .nav-toggle{display:flex;}
    .header-actions .btn{display:none;}
  }
  @media (max-width:768px){
    body .container{padding-inline:20px;}
    .section{padding:60px 0;}
    .section-tight{padding-top:48px;}
    .bento{grid-template-columns:1fr;gap:16px;}
    .bcard{padding:20px;}
    .bcard-feature,.bcard-wide{grid-column:span 1;}
    .hero-lead{font-size:15px;}
    .faq-item summary{padding:16px 16px;font-size:15.5px;gap:12px;}
    .faq-body{padding:0 16px 18px 44px;font-size:14px;}
    .cta-bar{padding:24px 20px;gap:18px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{flex:1 1 auto;}
    .cap-table thead{display:none;}
    .cap-table,.cap-table tbody,.cap-table tr,.cap-table td{display:block;width:100%;}
    .cap-table caption{padding:16px;}
    .cap-table tbody tr{
      border-bottom:1px solid var(--line);
      padding:6px 16px 14px;
    }
    .cap-table tbody tr:last-child{border-bottom:0;}
    .cap-table tbody td{
      border-bottom:0;
      padding:6px 0;
      display:flex;
      gap:12px;
    }
    .cap-table tbody td::before{
      content:attr(data-label);
      flex:0 0 74px;
      color:var(--faint);
      font-size:12.5px;
    }
    .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;text-align:left;}
  }
  @media (max-width:520px){
    .header-inner{gap:14px;}
    .brand-name{font-size:17px;}
    .hero-title{font-size:clamp(26px,7vw,32px);}
    .hero-meta{gap:8px;}
    .footer-grid{grid-template-columns:1fr;}
    .step{padding:20px;}
    .bcard-title{font-size:17px;}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  }

/* roulang page: category2 */
:root{
  --bg:#080B0A;
  --bg-soft:#0F1513;
  --card:#141C1A;
  --card-hover:#1B2523;
  --line:rgba(180,255,222,0.12);
  --neon:#4FE3A8;
  --neon-dark:#2BB98A;
  --amber:#FFB84D;
  --coral:#FF6B6B;
  --text:#E8F2EE;
  --muted:#A7B7B1;
  --dim:#6E807A;
  --radius-sm:10px;
  --radius:14px;
  --radius-lg:16px;
  --glow:0 0 0 1px rgba(79,227,168,.35), 0 10px 32px -12px rgba(79,227,168,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-num:'DIN Alternate','JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;color:inherit;background:none;border:none;padding:0;cursor:pointer}
::selection{background:rgba(79,227,168,.28);color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--neon);outline-offset:3px}
.btn-primary{background:var(--neon);color:#05100C;box-shadow:0 8px 24px -14px rgba(79,227,168,.9)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--glow);background:#5FF0B6}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--neon);border-color:rgba(79,227,168,.5)}
.btn-ghost:hover{background:rgba(79,227,168,.12);color:#7DF2C6}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px}
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;color:var(--neon);font-weight:600;transition:color .2s var(--ease)}
.text-link .arw{transition:transform .2s var(--ease)}
.text-link:hover{color:#7DF2C6}
.text-link:hover .arw{transform:translateX(4px)}
.text-link:focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:6px}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-size:12px;line-height:1.6;letter-spacing:.06em}
.badge-amber{background:rgba(255,184,77,.12);color:var(--amber);border:1px solid rgba(255,184,77,.28)}
.badge-neon{background:rgba(79,227,168,.12);color:var(--neon);border:1px solid rgba(79,227,168,.28)}
.badge-neutral{background:transparent;color:var(--dim);border:1px solid rgba(110,128,122,.5)}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(8,11,10,.82);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{height:68px;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;height:36px;flex-shrink:0}
.brand-mark{width:8px;height:8px;border-radius:2px;background:var(--neon);box-shadow:0 0 10px rgba(79,227,168,.85);flex-shrink:0}
.brand-text{display:flex;flex-direction:column;justify-content:center;line-height:1.1}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--text)}
.brand-sub{font-size:12px;letter-spacing:.18em;color:var(--muted);margin-top:3px}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:28px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 12px;border-radius:8px;font-size:15px;color:var(--muted);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
.nav-link.is-active{color:var(--neon)}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--neon);box-shadow:0 0 10px rgba(79,227,168,.9);
}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:9px;
  border:1px solid var(--line);background:rgba(255,255,255,.02);
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:rgba(79,227,168,.45);background:rgba(79,227,168,.08)}
.nav-toggle span{display:block;width:17px;height:2px;border-radius:2px;background:var(--text)}
.nav-toggle:focus-visible{outline:2px solid var(--neon);outline-offset:2px}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:90;background:rgba(4,7,6,.72);
  opacity:0;pointer-events:none;transition:opacity .22s var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:95;width:308px;max-width:86vw;
  background:var(--bg-soft);border-left:1px solid var(--line);
  padding:20px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(102%);transition:transform .24s var(--ease);
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:12px}
.drawer-close{
  width:36px;height:36px;border-radius:9px;border:1px solid var(--line);
  color:var(--muted);font-size:18px;line-height:1;display:flex;align-items:center;justify-content:center;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.drawer-close:hover{color:var(--text);border-color:rgba(79,227,168,.45)}
.drawer-close:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
.drawer-link{
  display:flex;align-items:center;min-height:52px;padding:0 12px;border-radius:10px;
  font-size:15px;color:var(--muted);border:1px solid transparent;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.drawer-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.drawer-link.is-active{color:var(--neon);background:rgba(79,227,168,.1);border-color:rgba(79,227,168,.28)}
.drawer-cta{margin-top:18px;width:100%}

/* ---------- 页头 ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:52px 0 48px}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.3;filter:saturate(.85);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,11,10,.42) 0%,rgba(8,11,10,.88) 62%,var(--bg) 100%);
}
.hero-inner{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a{color:var(--muted);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--neon)}
.breadcrumb .sep{color:var(--dim)}
.breadcrumb .current{color:var(--text)}
h1{
  font-size:clamp(28px,4.2vw,44px);line-height:1.22;font-weight:700;
  margin-top:16px;max-width:880px;letter-spacing:0;
}
.hero-lede{max-width:760px;margin-top:18px;color:var(--muted);font-size:16px;line-height:1.85}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}

/* ---------- 区块 ---------- */
.section{padding:92px 0}
.section + .section{border-top:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:650;letter-spacing:0}
.section-note{font-size:14px;color:var(--dim);max-width:420px;line-height:1.75}
.section-lede{margin-top:14px;font-size:15px;color:var(--muted);max-width:760px;line-height:1.85}

/* ---------- 指标卡 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:40px}
.metric-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:26px;
  transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.metric-card:hover{
  transform:translateY(-2px);background:var(--card-hover);
  border-color:rgba(79,227,168,.35);box-shadow:0 18px 40px -28px rgba(0,0,0,.9);
}
.metric-tick{display:block;width:38px;height:2px;border-radius:2px;background:var(--neon);margin-bottom:20px}
.metric-value{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:38px;line-height:1.1;font-weight:700;color:var(--text);letter-spacing:-.01em}
.metric-unit{font-size:16px;font-weight:500;color:var(--muted);margin-left:5px}
.metric-label{font-size:13px;color:var(--muted);margin-top:12px;line-height:1.6}
.metric-trend{
  margin-top:16px;padding-top:14px;border-top:1px dashed rgba(180,255,222,.14);
  font-size:13px;color:var(--amber);line-height:1.6;
}

/* ---------- 对比 ---------- */
.compare-wrap{display:grid;grid-template-columns:1fr auto 1fr;gap:18px;align-items:stretch;margin-top:40px}
.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.panel:hover{transform:translateY(-2px)}
.panel-bad{border-color:rgba(255,107,107,.22)}
.panel-good{border-color:rgba(79,227,168,.34);box-shadow:0 0 0 1px rgba(79,227,168,.14),0 18px 44px -26px rgba(79,227,168,.55)}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.panel-title{font-size:18px;font-weight:650}
.panel-pct{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:26px;font-weight:700}
.panel-bad .panel-pct{color:var(--coral)}
.panel-good .panel-pct{color:var(--neon)}
.progress{height:8px;border-radius:999px;background:rgba(255,255,255,.06);overflow:hidden;margin:18px 0 22px}
.progress i{display:block;height:100%;border-radius:999px}
.panel-bad .progress i{width:42%;background:var(--coral)}
.panel-good .progress i{width:88%;background:var(--neon)}
.panel-list li{
  position:relative;padding-left:20px;font-size:14px;line-height:1.8;
  color:var(--muted);margin-bottom:12px;
}
.panel-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;
}
.panel-bad .panel-list li::before{background:rgba(255,107,107,.75)}
.panel-good .panel-list li::before{background:var(--neon);box-shadow:0 0 8px rgba(79,227,168,.7)}
.panel-list li:last-child{margin-bottom:0}
.compare-badge{
  align-self:center;justify-self:center;
  display:flex;align-items:center;justify-content:center;
  width:56px;height:56px;border-radius:50%;
  border:1px solid rgba(79,227,168,.35);background:rgba(79,227,168,.08);
  color:var(--neon);font-size:12px;letter-spacing:.1em;line-height:1.4;text-align:center;
}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:40px}
.case-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.case-card:hover{transform:translateY(-2px);border-color:rgba(79,227,168,.35);background:var(--card-hover)}
.case-media{position:relative;border-radius:12px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/9;background:var(--bg-soft)}
.case-media img{width:100%;height:100%;object-fit:cover}
.case-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,11,10,0) 38%,rgba(8,11,10,.58) 100%)}
.case-title{font-size:18px;font-weight:650;margin-top:20px;line-height:1.45}
.case-desc{margin-top:10px;font-size:14px;line-height:1.75;color:var(--muted)}
.case-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:20px}
.case-stat{background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;padding:12px 14px}
.case-stat b{display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:19px;font-weight:700;color:var(--neon);line-height:1.3}
.case-stat span{display:block;font-size:12px;color:var(--dim);margin-top:4px;line-height:1.5}

/* ---------- 检查清单 ---------- */
.check-list{display:grid;gap:14px;margin-top:36px;max-width:900px}
.check-item{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px 24px;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.check-item:hover{border-color:rgba(79,227,168,.35);background:var(--card-hover)}
.check-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:15px;font-weight:700;color:var(--dim);flex-shrink:0;padding-top:2px;
}
.check-body h3{font-size:17px;font-weight:650;line-height:1.45}
.check-body p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--muted)}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  border:1px solid rgba(79,227,168,.35);border-radius:var(--radius-lg);
  padding:34px;margin-top:8px;
  background:radial-gradient(120% 150% at 100% 0%,rgba(79,227,168,.14),rgba(79,227,168,0) 62%),var(--card);
  box-shadow:0 0 0 1px rgba(79,227,168,.1),0 24px 60px -40px rgba(79,227,168,.7);
}
.cta-text h2{font-size:clamp(20px,2.2vw,25px);line-height:1.35}
.cta-text p{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.8;max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.back-row{margin-top:32px;display:flex;align-items:center;gap:20px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--bg-soft);padding:58px 0 28px;margin-top:0}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(79,227,168,.75),rgba(79,227,168,0));
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px 32px}
.footer-brand .brand{margin-bottom:18px}
.footer-desc{font-size:14px;line-height:1.85;color:var(--muted);max-width:340px}
.footer-contact{margin-top:18px;display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--dim)}
.footer-title{font-size:15px;font-weight:650;color:var(--text);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-link{
  font-size:14px;color:var(--muted);
  transition:color .2s var(--ease),transform .2s var(--ease);
  display:inline-block;
}
.footer-link:hover{color:var(--text);transform:translateX(2px)}
.footer-link:focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:4px}
.footer-bottom{
  grid-column:1/-1;margin-top:36px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--dim);
}

/* ---------- 响应式 ---------- */
@media (max-width:1120px){
  .nav-link{padding:9px 9px;font-size:14px}
  .nav-links{margin-left:18px}
}
@media (max-width:1024px){
  .section{padding:76px 0}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
  .footer-bottom{grid-column:1/-1}
}
@media (max-width:900px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .header-cta{display:none}
  .compare-wrap{grid-template-columns:1fr;gap:16px}
  .compare-badge{width:auto;height:auto;border-radius:999px;padding:6px 16px;font-size:12px;justify-self:start}
  .case-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:58px 0}
  .page-hero{padding:36px 0 34px}
  .metric-grid{grid-template-columns:1fr;gap:16px}
  .metric-card{padding:20px}
  .panel{padding:20px}
  .case-card{padding:18px}
  .check-item{padding:18px;gap:14px}
  .cta-band{padding:24px;gap:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px 20px}
  .footer-brand{grid-column:1/-1}
  .footer-bottom{justify-content:center;text-align:center;flex-direction:column;gap:8px}
  .section-head{align-items:flex-start}
  .section-note{max-width:100%}
}
@media (max-width:520px){
  .metric-value{font-size:32px}
  .case-stats{grid-template-columns:1fr;gap:10px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .breadcrumb{font-size:13px}
}

/* roulang page: category3 */
:root{
  --bg:#080B0A;
  --bg-soft:#0F1513;
  --card:#141C1A;
  --card-hover:#1B2523;
  --line:rgba(180,255,222,.12);
  --line-strong:rgba(180,255,222,.28);
  --neon:#4FE3A8;
  --neon-dark:#2BB98A;
  --amber:#FFB84D;
  --coral:#FF6B6B;
  --text:#E8F2EE;
  --text-2:#A7B7B1;
  --text-3:#6E807A;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --glow:0 0 0 1px rgba(79,227,168,.35),0 10px 32px -12px rgba(79,227,168,.45);
  --shadow:0 20px 48px -28px rgba(0,0,0,.95);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-num:'DIN Alternate','JetBrains Mono',ui-monospace,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:rgba(79,227,168,.28);color:#04120C}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.01em}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(8,11,10,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:68px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  height:36px;
  flex-shrink:0;
}
.brand-mark{
  width:8px;height:8px;
  border-radius:2px;
  background:var(--neon);
  box-shadow:0 0 12px rgba(79,227,168,.85);
  flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{
  font-size:18px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--text);
}
.brand-sub{
  font-size:12px;
  letter-spacing:.18em;
  color:var(--text-2);
  margin-top:2px;
}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:8px 12px;
  font-size:15px;
  color:var(--text-2);
  border-radius:8px;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link.is-active{color:var(--neon)}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--neon);
  box-shadow:0 0 10px rgba(79,227,168,.9);
}
.header-actions{display:flex;align-items:center;gap:12px}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn:focus-visible{outline:2px solid var(--neon);outline-offset:3px}
.btn-primary{
  background:var(--neon);
  color:#04120C;
  box-shadow:0 8px 24px -14px rgba(79,227,168,.9);
}
.btn-primary:hover{transform:translateY(-1px);background:#66EDB9;box-shadow:var(--glow)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:transparent;
  color:var(--neon);
  border-color:rgba(79,227,168,.55);
}
.btn-ghost:hover{background:rgba(79,227,168,.12);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--neon);
}
.link-arrow span{transition:transform .2s var(--ease);display:inline-block}
.link-arrow:hover span{transform:translateX(4px)}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  align-items:center;
  justify-content:center;
  background:transparent;
  border:1px solid var(--line);
  border-radius:10px;
  color:var(--text);
  cursor:pointer;
}
.nav-toggle:focus-visible{outline:2px solid var(--neon);outline-offset:3px}
.nav-toggle span{
  display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* 抽屉 */
.drawer-overlay{
  position:fixed;inset:0;
  background:rgba(4,8,7,.72);
  opacity:0;visibility:hidden;
  transition:opacity .22s var(--ease),visibility .22s var(--ease);
  z-index:70;
}
.drawer{
  position:fixed;
  top:0;right:0;
  width:284px;
  max-width:86vw;
  height:100%;
  background:var(--bg-soft);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform .22s var(--ease);
  z-index:80;
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:10px;
}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open .drawer-overlay{opacity:1;visibility:visible}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:6px;
}
.drawer-close{
  width:38px;height:38px;display:flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);border-radius:10px;color:var(--text-2);
  cursor:pointer;font-size:18px;line-height:1;
}
.drawer-close:hover{color:var(--text);border-color:var(--line-strong)}
.drawer .nav-link{
  display:flex;
  line-height:52px;
  padding:0 12px;
  font-size:15px;
  border-radius:10px;
}
.drawer .nav-link.is-active{background:rgba(79,227,168,.1)}
.drawer .nav-link.is-active::after{display:none}
.drawer .btn{margin-top:auto}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-alt{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:36px;flex-wrap:wrap;
}
.section-title{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:650;
  line-height:1.3;
  letter-spacing:0;
  color:var(--text);
}
.section-desc{font-size:14px;color:var(--text-2);max-width:420px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  font-size:12px;line-height:1.6;
  border:1px solid transparent;
  white-space:nowrap;
}
.badge-amber{background:rgba(255,184,77,.12);color:var(--amber)}
.badge-neon{background:rgba(79,227,168,.12);color:var(--neon)}
.badge-ghost{border-color:var(--line-strong);color:var(--text-2)}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.card:hover{
  transform:translateY(-2px);
  border-color:rgba(79,227,168,.35);
  background:var(--card-hover);
  box-shadow:var(--shadow);
}

/* ============ 面包屑 ============ */
.crumbs{
  padding:20px 0 0;
  font-size:14px;
  color:var(--text-2);
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  align-items:center;
}
.crumbs a{color:var(--text-2);transition:color .18s var(--ease)}
.crumbs a:hover{color:var(--neon)}
.crumbs .sep{color:var(--text-3)}
.crumbs .current{color:var(--text)}

/* ============ Hero ============ */
.hero-help{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:var(--bg);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  opacity:.34;
}
.hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,11,10,.55) 0%,rgba(8,11,10,.86) 62%,var(--bg) 100%);
}
.hero-inner{
  position:relative;
  padding:72px 0 64px;
  max-width:820px;
}
.hero-title{
  font-size:clamp(28px,4.2vw,44px);
  line-height:1.22;
  font-weight:700;
  margin-top:18px;
  color:var(--text);
}
.hero-title em{font-style:normal;color:var(--neon)}
.hero-lead{
  margin-top:18px;
  font-size:16.5px;
  line-height:1.85;
  color:var(--text-2);
  max-width:700px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:32px;
  margin-top:38px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.hero-fact-label{font-size:13px;color:var(--text-3);margin-top:4px}
.hero-fact-value{font-size:26px;font-weight:700;color:var(--text);font-family:var(--font-num);font-variant-numeric:tabular-nums}
.hero-fact-value i{font-style:normal;font-size:14px;color:var(--text-2);margin-left:4px;font-family:var(--font-cn)}

/* 锚点导航 */
.anchor-bar{
  position:relative;
  z-index:10;
  margin-top:-30px;
}
.anchor-scroll{
  display:flex;
  gap:10px;
  overflow-x:auto;
  padding:10px;
  background:rgba(20,28,26,.92);
  border:1px solid var(--line);
  border-radius:999px;
  backdrop-filter:blur(8px);
  scrollbar-width:none;
}
.anchor-scroll::-webkit-scrollbar{display:none}
.pill{
  flex:0 0 auto;
  padding:9px 18px;
  border-radius:999px;
  font-size:14px;
  color:var(--text-2);
  border:1px solid transparent;
  transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;
}
.pill:hover{color:var(--text);background:rgba(255,255,255,.05)}
.pill.is-active{
  background:rgba(79,227,168,.12);
  color:var(--neon);
  border-color:rgba(79,227,168,.4);
}

/* ============ 时间线 ============ */
.timeline{
  position:relative;
  margin-top:8px;
  padding-left:34px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:9px;top:8px;bottom:8px;
  width:2px;
  background:linear-gradient(180deg,rgba(79,227,168,.55),rgba(79,227,168,.08));
  border-radius:2px;
}
.tl-item{position:relative;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";
  position:absolute;
  left:-33px;top:6px;
  width:12px;height:12px;
  border-radius:50%;
  background:var(--bg);
  border:2px solid var(--neon);
  box-shadow:0 0 0 4px rgba(79,227,168,.1);
}
.tl-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.tl-index{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  color:var(--text-3);
}
.tl-title{font-size:18px;font-weight:650;line-height:1.4;color:var(--text)}
.tl-text{margin-top:10px;font-size:14.5px;line-height:1.85;color:var(--text-2);max-width:720px}
.tl-points{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px}
.tl-points span{
  font-size:12.5px;
  color:var(--text-2);
  border:1px solid var(--line);
  border-radius:999px;
  padding:3px 10px;
}
.tl-item.is-next::before{background:var(--neon);box-shadow:0 0 12px rgba(79,227,168,.7)}

/* ============ 常见问题 ============ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  border:1px solid var(--line);
  border-radius:12px;
  background:var(--card);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.faq-item:hover{border-color:rgba(79,227,168,.3);background:var(--card-hover)}
.faq-item[open]{border-color:rgba(79,227,168,.35);border-left:2px solid var(--neon)}
.faq-item summary{
  display:flex;
  align-items:center;
  gap:14px;
  padding:18px 22px;
  cursor:pointer;
  list-style:none;
  font-size:16.5px;
  color:var(--text);
  line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  color:var(--text-3);
  flex-shrink:0;
}
.faq-plus{
  margin-left:auto;
  flex-shrink:0;
  width:20px;height:20px;
  position:relative;
  color:var(--neon);
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;top:50%;left:50%;
  background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.faq-plus::before{width:14px;height:2px}
.faq-plus::after{width:2px;height:14px}
.faq-item[open] .faq-plus::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-answer{
  padding:0 22px 20px 50px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}

/* ============ 表单 ============ */
.form-panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:28px;
}
.form-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:13px;color:var(--text-2)}
.control{
  height:46px;
  width:100%;
  padding:0 14px;
  background:var(--bg-soft);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  color:var(--text);
  font-size:14.5px;
  font-family:inherit;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  appearance:none;
}
.control::placeholder{color:var(--text-3)}
.control:focus{
  outline:none;
  border-color:var(--neon);
  box-shadow:0 0 0 3px rgba(79,227,168,.14);
}
select.control{
  background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;
  background-size:6px 6px,6px 6px;
  background-repeat:no-repeat;
}
.check-row{
  display:flex;align-items:flex-start;gap:10px;
  margin-top:18px;font-size:13px;color:var(--text-2);line-height:1.7;
}
.check-row input{margin-top:4px;accent-color:var(--neon);width:16px;height:16px}
.form-foot{display:flex;align-items:center;gap:16px;margin-top:22px;flex-wrap:wrap}
.form-note{font-size:13px;color:var(--text-3)}
.success-bar{
  display:none;
  margin-top:18px;
  padding:14px 18px;
  border-radius:var(--r-sm);
  border:1px solid rgba(79,227,168,.5);
  background:rgba(79,227,168,.08);
  color:var(--neon);
  font-size:14px;
}
.success-bar.show{display:block}

/* 侧栏信息 */
.help-aside{display:flex;flex-direction:column;gap:18px}
.aside-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:24px;
}
.aside-list{display:flex;flex-direction:column;gap:14px;margin-top:16px}
.aside-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.75}
.dot{width:7px;height:7px;border-radius:50%;background:var(--neon);box-shadow:0 0 8px rgba(79,227,168,.8);margin-top:9px;flex-shrink:0}
.aside-metric{
  display:flex;align-items:baseline;gap:8px;
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:30px;font-weight:700;color:var(--text);
}
.aside-metric i{font-style:normal;font-size:13px;color:var(--text-2);font-family:var(--font-cn)}

/* ============ CTA 条 ============ */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:30px 32px;
  border:1px solid rgba(79,227,168,.4);
  border-radius:var(--r-md);
  background:linear-gradient(90deg,rgba(79,227,168,.1),rgba(15,21,19,.2) 60%,rgba(15,21,19,0));
  flex-wrap:wrap;
}
.cta-bar h2{font-size:20px;font-weight:650;line-height:1.4}
.cta-bar p{font-size:14px;color:var(--text-2);margin-top:6px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-soft);
  padding:64px 0 28px;
  margin-top:0;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(79,227,168,.7),rgba(79,227,168,0) 70%);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:36px;
}
.footer-brand{max-width:340px}
.footer-desc{
  margin-top:16px;
  font-size:14px;
  line-height:1.8;
  color:var(--text-2);
}
.footer-contact{
  margin-top:16px;
  display:flex;flex-direction:column;gap:6px;
  font-size:13px;color:var(--text-3);
}
.footer-title{
  font-size:13px;
  letter-spacing:.12em;
  color:var(--text-3);
  font-weight:600;
  margin-bottom:14px;
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-link{
  font-size:14px;
  color:var(--text-2);
  transition:color .2s var(--ease),transform .2s var(--ease);
  display:inline-block;
}
.footer-link:hover{color:var(--text);transform:translateX(2px)}
.footer-bottom{
  grid-column:1/-1;
  margin-top:36px;
  padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .section{padding:80px 0}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{max-width:none;grid-column:1/-1}
  .hero-inner{padding:56px 0 52px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .nav-links{display:none}
  .header-actions .btn{display:none}
  .nav-toggle{display:flex}
  .section{padding:60px 0}
  .section-tight{padding:44px 0}
  .hero-inner{padding:44px 0 40px}
  .hero-lead{font-size:15.5px}
  .hero-facts{gap:24px;margin-top:28px}
  .hero-fact-value{font-size:22px}
  .form-grid{grid-template-columns:1fr}
  .card{padding:20px}
  .form-panel{padding:20px}
  .faq-item summary{padding:16px 18px;font-size:15.5px}
  .faq-answer{padding:0 18px 18px 46px;font-size:14.5px}
  .timeline{padding-left:28px}
  .tl-item::before{left:-28px}
  .tl-title{font-size:16.5px}
  .tl-text{font-size:14px}
  .cta-bar{padding:24px 20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:center;text-align:center}
}
@media (max-width:520px){
  .brand-name{font-size:16px}
  .anchor-scroll{border-radius:14px}
  .pill{padding:8px 14px;font-size:13px}
  .footer-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
}