/* roulang page: index */
:root{
  --bg-0:#060A14;--bg-1:#0B1224;--bg-2:#111A30;
  --line:rgba(140,170,220,.14);
  --text-0:#E9F1FF;--text-1:#A7B6CE;--text-2:#6E7D96;
  --brand:#2FE3C0;--brand-2:#5B8CFF;--accent:#8A5CFF;--warn:#FF7A45;
  --grad:linear-gradient(120deg,#2FE3C0,#5B8CFF 55%,#8A5CFF);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate","Bahnschrift",ui-monospace,monospace;
  --sh-1:0 6px 20px rgba(0,0,0,.35);
  --sh-2:0 18px 48px rgba(0,0,0,.5);
  --glow:0 0 0 1px rgba(47,227,192,.40),0 10px 30px rgba(47,227,192,.28);
  --glass:rgba(255,255,255,.055);
  --glass-line:rgba(255,255,255,.10);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--text-0);
  font-family:var(--font-sans);font-size:16px;line-height:1.8;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease)}
a:hover{color:var(--brand)}
button{font-family:inherit;cursor:pointer}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em}
p{margin:0}
h1{font-size:52px;line-height:1.15}
h2{font-size:34px;line-height:1.25}
h3{font-size:21px;line-height:1.35;font-weight:600}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:8px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-alt{background:var(--bg-1);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:40px;flex-wrap:wrap}
.section-kicker{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--brand);background:rgba(47,227,192,.12);border:1px solid rgba(47,227,192,.24);border-radius:999px;padding:5px 12px;line-height:1;margin-bottom:16px}
.section-desc{color:var(--text-1);font-size:15px;max-width:640px;margin-top:12px}

/* 导航 */
.site-header{position:fixed;top:0;left:0;right:0;z-index:80;background:rgba(255,255,255,.06);border-bottom:1px solid var(--glass-line);box-shadow:var(--sh-1);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);transition:background .26s var(--ease),border-color .26s var(--ease)}
.site-header.scrolled{background:rgba(6,10,20,.95);border-bottom-color:var(--line)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;align-items:baseline;gap:8px;font-size:21px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.brand-main{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.brand-tag{font-size:11px;font-weight:600;letter-spacing:.04em;line-height:1;padding:4px 8px;border-radius:999px;background:rgba(47,227,192,.14);border:1px solid rgba(47,227,192,.26);color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{position:relative;font-size:15px;color:var(--text-1);padding:6px 0}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--brand);opacity:0;transform:scaleX(.55);transition:transform .24s var(--ease),opacity .24s var(--ease)}
.nav-link:hover{color:var(--text-0)}
.nav-link:hover::after,.nav-link.is-active::after{opacity:1;transform:scaleX(1)}
.nav-link.is-active{color:var(--text-0);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px}
.icon-btn{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;background:var(--glass);border:1px solid var(--glass-line);color:var(--text-1);font-size:14px;transition:all .22s var(--ease)}
.icon-btn:hover{color:var(--brand);border-color:rgba(47,227,192,.45)}
.menu-btn{display:none;width:38px;height:38px;border-radius:12px;background:var(--glass);border:1px solid var(--glass-line);color:var(--text-0);align-items:center;justify-content:center}
.mobile-panel{display:none;border-top:1px solid var(--line);background:rgba(6,10,20,.98);padding:12px 0 20px}
.mobile-panel.open{display:block}
.mobile-panel a{display:block;padding:12px 24px;font-size:15px;color:var(--text-1);border-bottom:1px solid var(--line)}
.mobile-panel a.is-active{color:var(--brand)}
.mobile-panel .btn{margin:16px 24px 0;width:calc(100% - 48px)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:12px;border:1px solid transparent;font-size:15px;font-weight:600;line-height:1.2;padding:13px 22px;transition:transform .22s var(--ease),box-shadow .24s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),filter .22s var(--ease)}
.btn-primary{background:var(--grad);color:#04121A;box-shadow:inset 0 1px 0 rgba(255,255,255,.25),0 10px 30px rgba(47,227,192,.28)}
.btn-primary:hover{color:#04121A;filter:brightness(1.08);transform:translateY(-1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.3),0 0 0 1px rgba(47,227,192,.45),0 14px 36px rgba(47,227,192,.4)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{background:var(--glass);border-color:var(--glass-line);color:var(--text-0);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}
.btn-ghost:hover{border-color:rgba(47,227,192,.45);color:var(--brand);background:rgba(47,227,192,.08)}
.btn-sm{padding:10px 16px;font-size:14px}
.btn-block{width:100%}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:15px;font-weight:600}
.link-more i{font-style:normal;transition:transform .22s var(--ease)}
.link-more:hover i{transform:translateX(3px)}

/* Hero */
.hero{position:relative;padding:132px 0 84px;min-height:88vh;display:flex;align-items:center;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(70% 60% at 78% 8%,rgba(91,140,255,.16),transparent 62%),radial-gradient(60% 50% at 6% 92%,rgba(47,227,192,.12),transparent 60%);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;width:100%}
.hero h1{background:linear-gradient(120deg,#E9F1FF 40%,#8FE8D8 72%,#9FB6FF);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin-top:22px;color:var(--text-1);font-size:17px;line-height:1.9;max-width:520px}
.hero-sub span{display:block}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line)}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-1)}
.hero-trust .dot{width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(47,227,192,.14);flex:none}
.hero-visual{position:relative;min-height:460px}
.hero-shot{position:absolute;inset:0;border-radius:28px;overflow:hidden;border:1px solid var(--glass-line);box-shadow:var(--sh-2)}
.hero-shot img{width:100%;height:100%;object-fit:cover;opacity:.5}
.hero-shot-mask{position:absolute;inset:0;background:radial-gradient(110% 80% at 72% 6%,rgba(47,227,192,.24),transparent 58%),linear-gradient(160deg,rgba(6,10,20,.30),rgba(6,10,20,.93))}
.float-card{position:absolute;background:var(--glass);border:1px solid var(--glass-line);border-radius:20px;padding:16px;box-shadow:var(--sh-2);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%)}
.float-card::before{content:"";position:absolute;left:16px;right:16px;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.55),transparent)}
.float-a{left:18px;bottom:22px;width:min(320px,86%);transform:rotate(-1.4deg)}
.float-b{right:14px;top:26px;width:min(250px,74%);transform:rotate(1.6deg)}
.float-head{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-1);margin-bottom:12px}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(47,227,192,.16);flex:none}
.float-head .val{margin-left:auto;font-family:var(--font-num);font-variant-numeric:tabular-nums;color:var(--brand);font-size:14px;font-weight:700}
.float-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;border:1px solid var(--line)}
.float-bar{height:6px;border-radius:99px;background:rgba(255,255,255,.08);margin:12px 0 8px;overflow:hidden}
.float-bar i{display:block;height:100%;border-radius:99px;background:var(--grad)}
.float-note{font-size:12px;color:var(--text-2);line-height:1.6}
.float-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:30px;line-height:1.1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.float-cap{font-size:12px;color:var(--text-2);margin-top:4px}

/* 阶梯 */
.tier-rail{position:relative;height:2px;border-radius:2px;background:linear-gradient(90deg,rgba(47,227,192,.18),rgba(91,140,255,.55),rgba(138,92,255,.75));margin:0 0 36px}
.tier-rail i{position:absolute;top:50%;width:12px;height:12px;border-radius:50%;background:var(--bg-0);border:2px solid var(--brand);transform:translate(-50%,-50%)}
.tier-rail i:nth-child(1){left:12.5%}
.tier-rail i:nth-child(2){left:37.5%;border-color:var(--brand-2)}
.tier-rail i:nth-child(3){left:62.5%;border-color:var(--accent);box-shadow:0 0 0 5px rgba(138,92,255,.16)}
.tier-rail i:nth-child(4){left:87.5%;border-color:var(--warn)}
.tier-card{position:relative;background:var(--bg-2);border:1px solid var(--line);border-radius:20px;padding:24px 22px;box-shadow:var(--sh-1);transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease)}
.tier-card:hover{transform:translateY(-2px);border-color:rgba(47,227,192,.4);box-shadow:var(--sh-2)}
.tier-card.is-rec{border-color:rgba(47,227,192,.45);box-shadow:var(--glow)}
.tier-card.is-rec::after{content:"";position:absolute;top:-8px;left:50%;transform:translateX(-50%) rotate(45deg);width:14px;height:14px;background:var(--bg-2);border-left:1px solid rgba(47,227,192,.45);border-top:1px solid rgba(47,227,192,.45)}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1;font-weight:600;letter-spacing:.04em;padding:6px 11px;border-radius:999px;background:rgba(47,227,192,.12);color:var(--brand);border:1px solid rgba(47,227,192,.24)}
.badge-purple{background:rgba(138,92,255,.14);color:#B79CFF;border-color:rgba(138,92,255,.3)}
.badge-blue{background:rgba(91,140,255,.14);color:#9DB8FF;border-color:rgba(91,140,255,.3)}
.badge-warn{background:rgba(255,122,69,.14);color:#FFA27A;border-color:rgba(255,122,69,.3)}
.tier-threshold{display:flex;align-items:baseline;gap:8px;margin:16px 0 4px}
.tier-threshold strong{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:40px;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.tier-threshold span{font-size:13px;color:var(--text-2)}
.tier-title{font-size:18px;font-weight:600;margin-bottom:12px}
.tier-list li{position:relative;padding-left:16px;font-size:14px;color:var(--text-1);line-height:1.9}
.tier-list li::before{content:"";position:absolute;left:0;top:11px;width:5px;height:5px;border-radius:1px;background:var(--brand)}

/* 套餐 */
.plan-card{position:relative;background:var(--bg-2);border:1px solid var(--line);border-radius:20px;padding:28px 24px;box-shadow:var(--sh-1);transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease)}
.plan-card:hover{border-color:rgba(47,227,192,.36);transform:translateY(-2px)}
.plan-card.is-hot{border-color:rgba(47,227,192,.5);box-shadow:var(--glow);transform:translateY(-8px)}
.plan-card.is-hot:hover{transform:translateY(-10px)}
.plan-ribbon{position:absolute;top:-13px;left:50%;transform:translateX(-50%);font-size:12px;font-weight:600;letter-spacing:.04em;padding:6px 14px;border-radius:999px;background:var(--grad);color:#04121A;white-space:nowrap;box-shadow:0 8px 22px rgba(47,227,192,.3)}
.plan-price{display:flex;align-items:baseline;gap:6px;margin:18px 0 6px}
.plan-price strong{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:44px;line-height:1;color:var(--text-0)}
.plan-price em{font-style:normal;font-size:14px;color:var(--text-2)}
.plan-rows{margin-top:20px;border-top:1px solid var(--line)}
.plan-rows li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--text-1)}
.plan-rows li b{font-weight:600;color:var(--text-0);font-size:14px}
.mark-yes{color:var(--brand);font-weight:700}
.mark-no{color:var(--text-2)}

/* 限时条带 */
.flash-band{position:relative;background:linear-gradient(120deg,rgba(255,122,69,.16),rgba(138,92,255,.2) 68%,rgba(91,140,255,.16)),var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:72px 0;clip-path:polygon(0 3%,100% 0,100% 97%,0 100%)}
.flash-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.count-row{display:flex;gap:12px;flex-wrap:wrap}
.count-box{background:var(--glass);border:1px solid var(--glass-line);border-radius:14px;padding:12px 10px;min-width:76px;text-align:center;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}
.count-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:30px;line-height:1.1;color:var(--text-0)}
.count-lbl{font-size:12px;color:var(--text-2);margin-top:4px;line-height:1}
.flash-note{font-size:14px;color:var(--text-1);margin-top:18px;line-height:1.8}

/* 资讯卡 */
.news-card{position:relative;display:flex;flex-direction:column;background:var(--glass);border:1px solid var(--glass-line);border-radius:20px;overflow:hidden;backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)}
.news-card:hover{transform:translateY(-2px);border-color:rgba(47,227,192,.4);box-shadow:var(--sh-2)}
.news-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:rgba(255,255,255,.04)}
.news-cover img{width:100%;height:100%;object-fit:cover;opacity:.86;transition:transform .4s var(--ease),opacity .24s var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.04);opacity:1}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-title{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-excerpt{font-size:14px;color:var(--text-1);line-height:1.7;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:8px;font-size:13px;color:var(--text-2);border-top:1px solid var(--line)}
.news-link{color:var(--brand);font-weight:600;font-size:13px}
.news-card .stretch{position:absolute;inset:0;z-index:2}
.empty-state{background:var(--glass);border:1px solid var(--glass-line);border-radius:20px;padding:56px 24px;text-align:center;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}
.empty-icon{width:48px;height:48px;border-radius:14px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;background:rgba(47,227,192,.12);border:1px solid rgba(47,227,192,.24);color:var(--brand);font-size:20px}

/* 表单 */
.form-shell{background:var(--glass);border:1px solid var(--glass-line);border-radius:20px;padding:28px;backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);box-shadow:var(--sh-2)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;color:var(--text-1);margin-bottom:8px}
.input,.select,.textarea{width:100%;background:rgba(6,10,20,.62);border:1px solid var(--line);border-radius:14px;padding:13px 15px;color:var(--text-0);font-size:15px;font-family:inherit;line-height:1.6;transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease)}
.input::placeholder,.textarea::placeholder{color:var(--text-2)}
.input:focus,.select:focus,.textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(47,227,192,.35);background:rgba(6,10,20,.82)}
.textarea{min-height:112px;resize:vertical}
.select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236E7D96' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;padding-right:40px}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-1);line-height:1.7;margin:6px 0 20px}
.check-row input{margin-top:4px;width:16px;height:16px;accent-color:#2FE3C0;flex:none}
.err{display:none;font-size:13px;color:var(--warn);margin-top:6px}
.err.show{display:block}
.contact-chip{display:flex;align-items:center;gap:12px;background:var(--bg-2);border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin-top:10px}
.contact-chip b{display:block;font-size:14px;color:var(--text-0);font-weight:600}
.contact-chip span{font-size:13px;color:var(--text-2)}

/* FAQ */
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:22px 0;background:transparent;border:0;color:var(--text-0);font-size:17px;font-weight:600;text-align:left;line-height:1.6;transition:color .22s var(--ease)}
.faq-q:hover{color:var(--brand)}
.faq-arrow{flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--text-1);font-size:11px;transition:transform .26s var(--ease),border-color .22s var(--ease),color .22s var(--ease)}
.faq-item.open .faq-arrow{transform:rotate(180deg);border-color:rgba(47,227,192,.45);color:var(--brand)}
.faq-a{display:none;padding:0 0 22px;font-size:15px;color:var(--text-1);line-height:1.8;max-width:760px}
.faq-item.open .faq-a{display:block}

/* 页脚 */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:baseline;gap:8px;font-size:20px;font-weight:700;margin-bottom:14px}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text-0)}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--text-1)}
.footer-col a:hover{color:var(--brand)}
.footer-text{font-size:14px;color:var(--text-2);line-height:1.8;max-width:320px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 0;border-top:1px solid var(--line);font-size:13px;color:var(--text-2);flex-wrap:wrap}
.to-top{display:inline-flex;align-items:center;gap:6px;color:var(--text-1);font-size:13px}
.to-top:hover{color:var(--brand)}

/* 响应式 */
@media (max-width:1279px){
  .container{max-width:1200px}
}
@media (max-width:1023px){
  h1{font-size:38px}
  h2{font-size:29px}
  .section{padding:72px 0}
  .hero{padding:120px 0 64px;min-height:auto}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-visual{min-height:380px}
  .flash-grid{grid-template-columns:1fr;gap:30px}
  .flash-band{clip-path:polygon(0 2%,100% 0,100% 98%,0 100%)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-links{display:none}
  .menu-btn{display:inline-flex}
  .plan-card.is-hot{transform:none}
  .plan-card.is-hot:hover{transform:translateY(-2px)}
}
@media (max-width:767px){
  .tier-rail{display:none}
  .tier-box{position:relative;padding-left:22px}
  .tier-box::before{content:"";position:absolute;left:5px;top:10px;bottom:10px;width:2px;background:linear-gradient(180deg,rgba(47,227,192,.5),rgba(138,92,255,.5))}
  .tier-card::before{content:"";position:absolute;left:-22px;top:28px;width:10px;height:10px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(47,227,192,.15)}
  .tier-card.is-rec::after{display:none}
}
@media (max-width:639px){
  h1{font-size:30px}
  h2{font-size:25px}
  h3{font-size:19px}
  .section{padding:56px 0}
  .container{padding:0 18px}
  .hero{padding:108px 0 56px}
  .hero-sub{font-size:16px}
  .hero-visual{min-height:330px}
  .float-a{width:calc(100% - 20px);left:10px;bottom:14px;transform:rotate(-1deg)}
  .float-b{width:60%;right:8px;top:16px;transform:rotate(1.2deg);padding:12px}
  .float-num{font-size:24px}
  .brand{font-size:18px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .count-box{min-width:64px;padding:10px 8px}
  .count-num{font-size:24px}
  .form-shell{padding:20px}
  .hero-trust{gap:10px 18px}
  .flash-band{clip-path:none}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --bg-0:#060A14;
  --bg-1:#0B1224;
  --bg-2:#111A30;
  --line:rgba(140,170,220,.14);
  --text-0:#E9F1FF;
  --text-1:#A7B6CE;
  --text-2:#6E7D96;
  --brand:#2FE3C0;
  --brand-2:#5B8CFF;
  --accent:#8A5CFF;
  --warn:#FF7A45;
  --grad:linear-gradient(120deg,#2FE3C0,#5B8CFF 55%,#8A5CFF);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate","Bahnschrift",ui-monospace,monospace;
  --sh-1:0 6px 20px rgba(0,0,0,.35);
  --sh-2:0 18px 48px rgba(0,0,0,.5);
  --glow:0 0 0 1px rgba(47,227,192,.40),0 10px 30px rgba(47,227,192,.28);
  --glass:rgba(255,255,255,.055);
  --glass-line:rgba(255,255,255,.10);
  --r-btn:12px;
  --r-input:14px;
  --r-card:20px;
  --r-lg:28px;
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-0);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
button{font-family:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:16px;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;}
::selection{background:rgba(47,227,192,.28);color:#fff;}

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

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  background:var(--glass);
  border-bottom:1px solid var(--glass-line);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:0 8px 30px rgba(0,0,0,.28);
  transition:background .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.site-header.is-solid{
  background:rgba(6,10,20,.95);
  border-bottom-color:var(--line);
  box-shadow:0 10px 34px rgba(0,0,0,.5);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:72px;
}
.brand{display:flex;align-items:baseline;gap:8px;flex-shrink:0;}
.brand-main{
  font-size:21px;
  font-weight:800;
  color:var(--text-0);
  letter-spacing:.01em;
}
.brand-tag{
  font-size:11px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--brand);
  padding:3px 8px;
  border-radius:999px;
  border:1px solid rgba(47,227,192,.34);
  background:rgba(47,227,192,.10);
  transform:translateY(-2px);
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:15px;
  color:var(--text-1);
  border-radius:10px;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--grad);
  opacity:0;
  transform:scaleX(.4);
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.nav-link:hover{color:var(--text-0);background:rgba(255,255,255,.05);}
.nav-link:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.nav-link.is-active{color:var(--text-0);}
.nav-link.is-active::after{opacity:1;transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.icon-btn{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  border:1px solid var(--glass-line);
  background:rgba(255,255,255,.05);
  color:var(--text-1);
  transition:color .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(47,227,192,.45);background:rgba(47,227,192,.10);}
.icon-btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.menu-btn{display:none;}
.nav-mobile-cta{display:none;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),filter .22s var(--ease);
}
.btn-primary{
  color:#04231D;
  background:var(--grad);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.25),var(--glow);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.3),0 0 0 1px rgba(47,227,192,.5),0 14px 36px rgba(47,227,192,.34);}
.btn-primary:active{transform:translateY(0);filter:brightness(.98);}
.btn-ghost{
  color:var(--text-0);
  background:rgba(255,255,255,.05);
  border-color:var(--glass-line);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
}
.btn-ghost:hover{border-color:rgba(47,227,192,.45);color:var(--brand);background:rgba(47,227,192,.08);transform:translateY(-1px);}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:3px;}
.btn-sm{padding:9px 16px;font-size:14px;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14px;font-weight:600;
}
.text-link i{transition:transform .22s var(--ease);}
.text-link:hover i{transform:translateX(3px);}
.text-link:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 11px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
  line-height:1;
  border-radius:999px;
  color:var(--brand);
  background:rgba(47,227,192,.12);
  border:1px solid rgba(47,227,192,.26);
}
.badge-violet{color:#C4B0FF;background:rgba(138,92,255,.14);border-color:rgba(138,92,255,.32);}

/* ---------- 面包屑与文章头 ---------- */
.page-main{padding-top:0;}
.article-hero{
  position:relative;
  padding:calc(72px + 44px) 0 34px;
  background:
    radial-gradient(920px 340px at 10% -10%, rgba(47,227,192,.13), transparent 64%),
    radial-gradient(760px 320px at 90% 6%, rgba(138,92,255,.15), transparent 66%),
    var(--bg-1);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-hero::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(140,170,220,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,170,220,.055) 1px, transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:linear-gradient(180deg, rgba(0,0,0,.75), transparent 78%);
  mask-image:linear-gradient(180deg, rgba(0,0,0,.75), transparent 78%);
}
.article-hero > .container{position:relative;z-index:1;}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-2);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--text-1);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb a:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.breadcrumb .sep{color:var(--text-2);opacity:.6;}
.breadcrumb .current{
  color:var(--text-1);
  max-width:220px;
  overflow:hidden;
  white-space:nowrap;
  text-overflow:ellipsis;
}
.article-head{max-width:860px;}
.article-head h1{
  margin:14px 0 18px;
  font-size:40px;
  line-height:1.25;
  font-weight:700;
  color:var(--text-0);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 20px;
  font-size:14px;
  color:var(--text-2);
}
.meta-item{display:inline-flex;align-items:center;gap:7px;font-variant-numeric:tabular-nums;}
.meta-item i{color:var(--brand);font-size:13px;}
.meta-divider{width:1px;height:14px;background:var(--line);}

/* ---------- 正文区 ---------- */
.article-section{
  background:var(--bg-0);
  padding:56px 0 88px;
}
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:48px;
  align-items:start;
}
.article-main{min-width:0;max-width:820px;}
.article-body{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:40px 44px 44px;
  font-size:16px;
  line-height:1.9;
  color:var(--text-1);
  box-shadow:var(--sh-1);
}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  font-size:24px;
  line-height:1.35;
  font-weight:700;
  color:var(--text-0);
  margin:40px 0 14px;
  padding-left:14px;
  position:relative;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.36em;
  width:4px;height:1em;
  border-radius:2px;
  background:var(--grad);
}
.article-body h3{
  font-size:19px;
  line-height:1.4;
  font-weight:600;
  color:var(--text-0);
  margin:28px 0 10px;
}
.article-body p{margin:0 0 18px;}
.article-body strong{color:var(--text-0);font-weight:600;}
.article-body ul,.article-body ol{margin:0 0 18px;padding:0;list-style:none;}
.article-body ul li{
  position:relative;
  padding-left:20px;
  margin-bottom:10px;
}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 8px rgba(47,227,192,.5);
}
.article-body ol{counter-reset:step;}
.article-body ol li{
  position:relative;
  padding-left:30px;
  margin-bottom:10px;
  counter-increment:step;
}
.article-body ol li::before{
  content:counter(step);
  position:absolute;
  left:0;top:.32em;
  width:20px;height:20px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);
  font-size:12px;
  font-weight:700;
  color:var(--brand);
  border-radius:6px;
  background:rgba(47,227,192,.12);
  border:1px solid rgba(47,227,192,.28);
}
.article-body blockquote{
  margin:24px 0;
  padding:16px 20px;
  border-left:3px solid var(--brand);
  background:rgba(255,255,255,.04);
  border-radius:0 var(--r-input) var(--r-input) 0;
  color:var(--text-1);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;
  height:auto;
  border-radius:16px;
  margin:12px 0;
  border:1px solid var(--line);
}
.article-body a{
  color:var(--brand-2);
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:1px;
}
.article-body a:hover{color:var(--brand);}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:22px 0;
  font-size:15px;
  color:var(--text-1);
}
.article-body th,.article-body td{
  padding:12px 14px;
  border:0;
  border-bottom:1px solid var(--line);
  text-align:left;
  vertical-align:top;
}
.article-body th{color:var(--text-0);font-weight:600;background:rgba(255,255,255,.03);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}

/* 空状态 */
.empty-box{
  text-align:center;
  padding:64px 24px;
  border:1px dashed rgba(140,170,220,.24);
  border-radius:var(--r-card);
  background:rgba(255,255,255,.03);
}
.empty-box i{font-size:34px;color:var(--text-2);}
.empty-box h2{margin:16px 0 10px;font-size:22px;color:var(--text-0);padding:0;}
.empty-box h2::before{display:none;}
.empty-box p{max-width:460px;margin:0 auto 22px;color:var(--text-2);font-size:15px;line-height:1.8;}

/* ---------- 上下篇 / 返回 ---------- */
.article-foot{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
  margin-top:26px;
}
.foot-card{
  display:block;
  padding:20px 22px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--bg-1);
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.foot-card:hover{border-color:rgba(47,227,192,.4);transform:translateY(-2px);box-shadow:var(--sh-1);}
.foot-card:focus-visible{outline:2px solid var(--brand);outline-offset:3px;}
.foot-card span{display:block;font-size:12px;letter-spacing:.06em;color:var(--text-2);margin-bottom:8px;}
.foot-card strong{display:block;font-size:16px;font-weight:600;color:var(--text-0);line-height:1.5;}
.foot-card:hover strong{color:var(--brand);}
.back-row{margin-top:24px;}

/* ---------- 相关推荐 ---------- */
.related-block{margin-top:56px;}
.block-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:18px;
  margin-bottom:22px;
}
.block-head h2{font-size:24px;line-height:1.3;color:var(--text-0);}
.block-head p{margin:6px 0 0;font-size:14px;color:var(--text-2);}
.card-grid-3{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.news-card{
  position:relative;
  display:flex;
  flex-direction:column;
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--glass);
  border:1px solid var(--glass-line);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.news-card:hover{transform:translateY(-2px);border-color:rgba(47,227,192,.4);box-shadow:var(--sh-1);}
.news-card:focus-visible{outline:2px solid var(--brand);outline-offset:3px;}
.news-thumb{
  position:relative;
  aspect-ratio:16/9;
  background:linear-gradient(120deg,rgba(47,227,192,.10),rgba(138,92,255,.10));
  overflow:hidden;
}
.news-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s var(--ease);
}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{font-size:17px;line-height:1.5;color:var(--text-0);font-weight:600;}
.news-body p{font-size:14px;line-height:1.7;color:var(--text-2);margin:0;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:10px;margin-top:auto;font-size:13px;color:var(--text-2);}
.news-meta .read{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:5px;}

/* ---------- 侧栏 ---------- */
.article-aside{min-width:0;}
.aside-inner{
  position:sticky;
  top:96px;
  display:grid;
  gap:20px;
}
.aside-card{
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--bg-1);
  padding:20px;
}
.aside-card h3{
  font-size:14px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--text-2);
  margin-bottom:14px;
}
.aside-list li + li{margin-top:14px;}
.aside-item{display:flex;gap:12px;align-items:flex-start;}
.aside-item .thumb{
  width:66px;height:44px;
  flex:0 0 auto;
  border-radius:10px;
  overflow:hidden;
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
}
.aside-item .thumb img{width:100%;height:100%;object-fit:cover;}
.aside-item .txt{min-width:0;}
.aside-item .txt strong{
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  font-size:14px;
  line-height:1.55;
  color:var(--text-0);
  font-weight:600;
  transition:color .22s var(--ease);
}
.aside-item:hover .txt strong{color:var(--brand);}
.aside-item:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:8px;}
.aside-cta{
  border-radius:var(--r-card);
  padding:24px 20px;
  border:1px solid rgba(47,227,192,.28);
  background:
    radial-gradient(320px 160px at 20% 0%, rgba(47,227,192,.18), transparent 70%),
    radial-gradient(280px 160px at 100% 100%, rgba(138,92,255,.20), transparent 72%),
    var(--bg-2);
  box-shadow:var(--glow);
}
.aside-cta h3{font-size:17px;color:var(--text-0);margin-bottom:8px;letter-spacing:0;}
.aside-cta p{font-size:13px;line-height:1.7;color:var(--text-2);margin:0 0 16px;}
.aside-cta .btn{width:100%;}
.aside-nav li + li{border-top:1px solid var(--line);}
.aside-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:11px 0;
  font-size:14px;
  color:var(--text-1);
}
.aside-nav a i{font-size:12px;color:var(--text-2);transition:transform .22s var(--ease),color .22s var(--ease);}
.aside-nav a:hover{color:var(--brand);}
.aside-nav a:hover i{transform:translateX(3px);color:var(--brand);}
.aside-nav a:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand{display:flex;align-items:baseline;gap:8px;margin-bottom:14px;}
.footer-brand .brand-main{font-size:20px;font-weight:800;color:var(--text-0);}
.footer-brand .brand-tag{
  font-size:11px;font-weight:600;letter-spacing:.14em;color:var(--brand);
  padding:3px 8px;border-radius:999px;
  border:1px solid rgba(47,227,192,.34);
  background:rgba(47,227,192,.10);
}
.footer-text{font-size:14px;line-height:1.8;color:var(--text-2);margin:0;max-width:330px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-0);margin-bottom:16px;letter-spacing:.04em;}
.footer-col li + li{margin-top:10px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand);}
.footer-col a:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0 24px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-2);
}
.to-top{color:var(--text-1);font-size:13px;display:inline-flex;align-items:center;gap:6px;}
.to-top:hover{color:var(--brand);}
.to-top:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px;}

/* ---------- 进入动画 ---------- */
.fade-in{
  opacity:0;
  transform:translateY(8px);
  animation:fadeUp .5s var(--ease) forwards;
}
@keyframes fadeUp{to{opacity:1;transform:translateY(0);}}
.d1{animation-delay:.06s;}
.d2{animation-delay:.12s;}
.d3{animation-delay:.18s;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-head h1{font-size:34px;}
  .article-grid{gap:32px;}
}
@media (max-width:1023px){
  .container{padding:0 20px;}
  .nav-links{
    position:absolute;
    top:100%;left:0;right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:8px 20px 18px;
    background:rgba(6,10,20,.98);
    border-bottom:1px solid var(--line);
    box-shadow:var(--sh-2);
  }
  .nav-links.open{display:flex;}
  .nav-link{padding:13px 2px;border-bottom:1px solid var(--line);border-radius:0;}
  .nav-link::after{left:2px;right:auto;width:22px;bottom:8px;}
  .menu-btn{display:inline-flex;}
  .nav-mobile-cta{display:flex;margin-top:14px;width:100%;}
  .nav-cta-desktop{display:none;}
  .article-hero{padding:calc(72px + 32px) 0 28px;}
  .article-head h1{font-size:30px;}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .article-main{max-width:none;}
  .article-aside{order:2;}
  .aside-inner{position:static;}
  .card-grid-3{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .article-body{padding:32px 28px 34px;}
}
@media (max-width:639px){
  .container{padding:0 18px;}
  .brand-main{font-size:19px;}
  .article-head h1{font-size:25px;line-height:1.35;}
  .article-hero{padding:calc(72px + 24px) 0 24px;}
  .article-section{padding:36px 0 64px;}
  .article-body{padding:24px 20px 28px;border-radius:var(--r-card);}
  .article-body h2{font-size:21px;margin-top:32px;}
  .article-body h3{font-size:18px;}
  .article-foot{grid-template-columns:1fr;}
  .card-grid-3{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .block-head{flex-direction:column;align-items:flex-start;gap:8px;}
  .meta-divider{display:none;}
  .breadcrumb .current{max-width:150px;}
}

/* roulang page: category1 */
:root{
  --bg-0:#060A14;--bg-1:#0B1224;--bg-2:#111A30;
  --line:rgba(140,170,220,.14);
  --text-0:#E9F1FF;--text-1:#A7B6CE;--text-2:#6E7D96;
  --brand:#2FE3C0;--brand-2:#5B8CFF;--accent:#8A5CFF;--warn:#FF7A45;
  --grad:linear-gradient(120deg,#2FE3C0,#5B8CFF 55%,#8A5CFF);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate","Bahnschrift",ui-monospace,SFMono-Regular,monospace;
  --sh-1:0 6px 20px rgba(0,0,0,.35);
  --sh-2:0 18px 48px rgba(0,0,0,.5);
  --glow:0 0 0 1px rgba(47,227,192,.40),0 10px 30px rgba(47,227,192,.28);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg-0);color:var(--text-0);
  font-family:var(--font-sans);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
::selection{background:rgba(47,227,192,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#080d18}
::-webkit-scrollbar-thumb{background:rgba(140,170,220,.22);border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:rgba(47,227,192,.4)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-tight{padding:64px 0}

/* ===== 导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(255,255,255,.06);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.10);
  box-shadow:0 6px 20px rgba(0,0,0,.22);
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,10,20,.95);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.5);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.brand{display:flex;align-items:center;gap:8px;flex-shrink:0}
.brand-main{font-size:20px;font-weight:700;letter-spacing:-.01em;color:var(--text-0)}
.brand-tag{
  font-size:11px;font-weight:600;letter-spacing:.04em;line-height:1;
  padding:4px 8px;border-radius:999px;color:var(--brand);
  background:rgba(47,227,192,.12);border:1px solid rgba(47,227,192,.28);
}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;display:inline-block;padding:8px 14px;border-radius:10px;
  font-size:15px;color:var(--text-1);white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text-0);background:rgba(255,255,255,.07)}
.nav-link:active{background:rgba(47,227,192,.12)}
.nav-link.is-active{color:var(--text-0);font-weight:600}
.nav-link.is-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:10px;flex-shrink:0}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;color:var(--text-1);
  border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.05);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(47,227,192,.42);background:rgba(47,227,192,.1)}
.icon-btn:active{transform:translateY(1px)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:12px;font-size:15px;font-weight:600;line-height:1.4;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),
             background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),filter .22s var(--ease);
}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:12px}
.btn-primary{
  background:var(--grad);color:#04131a;
  box-shadow:0 0 0 1px rgba(47,227,192,.40),0 10px 30px rgba(47,227,192,.22),inset 0 1px 0 rgba(255,255,255,.25);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 0 1px rgba(47,227,192,.62),0 14px 40px rgba(47,227,192,.34),inset 0 1px 0 rgba(255,255,255,.3)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.98)}
.btn-ghost{
  color:var(--text-0);border-color:rgba(255,255,255,.14);
  background:rgba(255,255,255,.055);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
}
.btn-ghost:hover{border-color:rgba(47,227,192,.42);background:rgba(47,227,192,.09);color:#fff}
.btn-ghost:active{transform:translateY(1px)}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px;transition:gap .2s var(--ease),color .2s var(--ease)}
.btn-text i{transition:transform .2s var(--ease)}
.btn-text:hover{color:#63f2d8}
.btn-text:hover i{transform:translateX(2px)}

/* ===== 徽章 / 标签 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.04em;line-height:1.6;
  color:var(--brand);background:rgba(47,227,192,.12);border:1px solid rgba(47,227,192,.26);
}
.badge-violet{color:#BFA8FF;background:rgba(138,92,255,.14);border-color:rgba(138,92,255,.32)}
.badge-blue{color:#9BC1FF;background:rgba(91,140,255,.14);border-color:rgba(91,140,255,.32)}
.badge-warn{color:#FFB08C;background:rgba(255,122,69,.13);border-color:rgba(255,122,69,.3)}
.tag{
  display:inline-block;padding:4px 10px;border-radius:999px;font-size:12px;line-height:1.6;
  color:var(--text-1);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.tag:hover{color:var(--brand);border-color:rgba(47,227,192,.36)}

/* ===== Hero ===== */
.page-hero{position:relative;overflow:hidden;padding:140px 0 64px;min-height:46vh;display:flex;align-items:center}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:
    radial-gradient(900px 420px at 12% 20%,rgba(47,227,192,.18),transparent 62%),
    radial-gradient(700px 420px at 82% 90%,rgba(138,92,255,.20),transparent 66%),
    linear-gradient(96deg,rgba(6,10,20,.97) 0%,rgba(6,10,20,.86) 46%,rgba(6,10,20,.62) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover,cover,cover,cover;
  background-position:center;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(140,170,220,.28),transparent);
}
.hero-inner{position:relative;z-index:1;max-width:760px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);margin-bottom:22px}
.crumb a{color:var(--text-2);transition:color .2s var(--ease)}
.crumb a:hover{color:var(--brand)}
.crumb span.sep{opacity:.6}
.crumb-current{color:var(--text-1)}
.hero-h1{
  font-size:clamp(28px,4.2vw,52px);line-height:1.15;font-weight:700;letter-spacing:-.01em;
  margin:18px 0 18px;color:var(--text-0);
}
.hero-sub{font-size:16px;line-height:1.85;color:var(--text-1);margin-bottom:28px;max-width:620px}

/* ===== 区块标题 ===== */
.section-head{max-width:720px;margin-bottom:48px}
.section-head h2{font-size:clamp(24px,2.8vw,34px);line-height:1.28;font-weight:700;letter-spacing:-.01em;margin:14px 0 14px}
.section-head p{color:var(--text-1);font-size:16px;line-height:1.85}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;
  letter-spacing:.06em;color:var(--brand-2);
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad)}

/* ===== 玻璃 / 面板 ===== */
.glass{
  background:rgba(255,255,255,.055);
  border:1px solid rgba(255,255,255,.10);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-radius:20px;
}
.panel{
  background:var(--bg-2);border:1px solid var(--line);border-radius:20px;
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.panel:hover{transform:translateY(-2px);border-color:rgba(47,227,192,.4);box-shadow:var(--sh-2)}

/* ===== 阶梯 ===== */
.steps{position:relative;padding-left:46px}
.steps::before{
  content:"";position:absolute;left:13px;top:10px;bottom:10px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,rgba(47,227,192,.8),rgba(91,140,255,.55) 55%,rgba(138,92,255,.16));
}
.step{position:relative;margin-bottom:24px}
.step:last-child{margin-bottom:0}
.step::before{
  content:"";position:absolute;left:-39px;top:28px;width:12px;height:12px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--brand);
  box-shadow:0 0 0 4px rgba(47,227,192,.12);
}
.step-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--brand);
}
.step-card{padding:26px 28px}
.step-title{font-size:21px;font-weight:600;line-height:1.35;margin:8px 0 10px}
.step-desc{color:var(--text-1);font-size:15px;line-height:1.8;margin-bottom:16px}
.step-desc li{position:relative;padding-left:18px;margin-bottom:6px}
.step-desc li::before{
  content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:2px;
  background:var(--brand);opacity:.85;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;padding-top:14px;border-top:1px solid var(--line)}

/* ===== 准备清单 ===== */
.prep-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.prep-media{position:relative;border-radius:24px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-2)}
.prep-media img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#0d1526}
.prep-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,20,.1),rgba(6,10,20,.72));
}
.prep-badge{
  position:absolute;left:16px;bottom:16px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--text-0);
  background:rgba(6,10,20,.7);border:1px solid rgba(255,255,255,.14);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.check-list li{
  display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line);
}
.check-list li:last-child{border-bottom:0}
.check-ico{
  flex-shrink:0;width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  color:var(--brand);background:rgba(47,227,192,.1);border:1px solid rgba(47,227,192,.26);font-size:14px;
}
.check-list h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:4px}
.check-list p{font-size:14px;color:var(--text-1);line-height:1.75}

/* ===== 异常对照 ===== */
.issue-list{border-top:1px solid var(--line)}
.issue{
  display:grid;grid-template-columns:.85fr 1.6fr;gap:32px;
  padding:24px 0;border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.issue:hover{background:rgba(255,255,255,.02)}
.issue-q{display:flex;align-items:flex-start;gap:12px;font-size:17px;font-weight:600;line-height:1.6}
.issue-q i{color:var(--warn);font-size:14px;margin-top:7px}
.issue-a{color:var(--text-1);font-size:15px;line-height:1.8}
.issue-a strong{color:var(--text-0);font-weight:600}

/* ===== FAQ ===== */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;
  padding:22px 4px;text-align:left;font-size:17px;font-weight:600;line-height:1.6;color:var(--text-0);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-q i{flex-shrink:0;font-size:13px;color:var(--text-2);transition:transform .28s var(--ease),color .2s var(--ease)}
.faq-item.is-open .faq-q{color:var(--brand)}
.faq-item.is-open .faq-q i{transform:rotate(180deg);color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a p{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--text-1)}

/* ===== CTA 条带 ===== */
.cta-band{
  position:relative;margin:0 0 -96px;
  background:
    linear-gradient(115deg,rgba(255,122,69,.14),rgba(138,92,255,.20) 62%,rgba(6,10,20,0) 100%),
    var(--bg-1);
  clip-path:polygon(0 5%,100% 0,100% 95%,0 100%);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:76px 0 84px;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;margin-bottom:10px}
.cta-inner p{color:var(--text-1);font-size:15px;line-height:1.8;max-width:620px}

/* ===== 页脚 ===== */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:8px;margin-bottom:16px}
.footer-text{font-size:14px;line-height:1.85;color:var(--text-1);max-width:340px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-0);letter-spacing:.02em;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:var(--text-1);transition:color .2s var(--ease)}
.footer-col ul li a:hover{color:var(--brand)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:56px;padding:22px 0;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-2);
}
.to-top{color:var(--text-1);font-size:13px;transition:color .2s var(--ease)}
.to-top:hover{color:var(--brand)}

/* ===== 动效 ===== */
@keyframes riseIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.reveal{animation:riseIn .55s var(--ease) both}
.d1{animation-delay:.06s}.d2{animation-delay:.12s}.d3{animation-delay:.18s}.d4{animation-delay:.24s}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  .section{padding:72px 0}
  .page-hero{padding:126px 0 52px}
  .prep-grid{grid-template-columns:1fr;gap:32px}
  .issue{grid-template-columns:1fr;gap:10px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{margin-bottom:-72px}
}
@media (max-width:960px){
  .nav-wrap{flex-wrap:wrap;padding-top:12px;padding-bottom:10px;gap:12px;min-height:0}
  .nav-links{order:3;width:100%;overflow-x:auto;gap:2px;padding-bottom:2px;scrollbar-width:none}
  .nav-links::-webkit-scrollbar{display:none}
  .nav-link{font-size:14px;padding:7px 11px}
  .nav-link.is-active::after{left:11px;right:11px;bottom:0}
  .nav-actions .btn-sm{padding:8px 14px;font-size:13px}
  .page-hero{padding-top:150px}
  .steps{padding-left:34px}
  .steps::before{left:9px}
  .step::before{left:-31px;top:26px}
  .step-card{padding:22px 20px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .page-hero{padding:142px 0 44px;min-height:0}
  .hero-h1{font-size:clamp(26px,7.6vw,32px)}
  .hero-sub{font-size:15px}
  .brand-main{font-size:18px}
  .icon-btn{display:none}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta-band{clip-path:polygon(0 2%,100% 0,100% 98%,0 100%);padding:56px 0 60px;margin-bottom:-56px}
  .site-footer{margin-top:56px;padding-top:56px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .issue-q{font-size:16px}
  .faq-q{font-size:16px;padding:18px 2px}
}

/* roulang page: category2 */
:root{
    --bg-0:#060A14;
    --bg-1:#0B1224;
    --bg-2:#111A30;
    --line:rgba(140,170,220,.14);
    --text-0:#E9F1FF;
    --text-1:#A7B6CE;
    --text-2:#6E7D96;
    --brand:#2FE3C0;
    --brand-2:#5B8CFF;
    --accent:#8A5CFF;
    --warn:#FF7A45;
    --grad:linear-gradient(120deg,#2FE3C0,#5B8CFF 55%,#8A5CFF);
    --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
    --font-num:"DIN Alternate","Bahnschrift",ui-monospace,monospace;
    --sh-1:0 6px 20px rgba(0,0,0,.35);
    --sh-2:0 18px 48px rgba(0,0,0,.5);
    --glow:0 0 0 1px rgba(47,227,192,.40),0 10px 30px rgba(47,227,192,.28);
    --r-btn:12px;
    --r-input:14px;
    --r-card:20px;
    --r-lg:28px;
    --glass-bg:rgba(255,255,255,.055);
    --glass-line:rgba(255,255,255,.10);
    --ease:cubic-bezier(.2,.8,.2,1);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg-0);
    color:var(--text-0);
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{display:block;max-width:100%;}
  a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
  button{font-family:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  h1,h2,h3,h4{line-height:1.25;font-weight:700;letter-spacing:-.01em;}
  ::selection{background:rgba(47,227,192,.28);color:#fff;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:24px;
    padding-right:24px;
  }
  .section{padding:96px 0;}
  .section-tight{padding:64px 0;}

  /* ============ 顶部导航 ============ */
  .site-header{
    position:fixed;
    top:0;left:0;right:0;
    z-index:80;
    background:rgba(255,255,255,.06);
    border-bottom:1px solid rgba(255,255,255,.08);
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    box-shadow:0 8px 30px rgba(0,0,0,.22);
    transition:background .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(6,10,20,.95);
    border-bottom-color:var(--line);
    box-shadow:0 10px 34px rgba(0,0,0,.5);
  }
  .header-inner{
    display:flex;
    align-items:center;
    gap:28px;
    min-height:72px;
  }
  .logo{
    display:inline-flex;
    align-items:baseline;
    gap:8px;
    flex-shrink:0;
  }
  .brand-main{
    font-size:21px;
    font-weight:700;
    letter-spacing:.01em;
    background:var(--grad);
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
    line-height:1.1;
  }
  .brand-tag{
    font-size:11px;
    font-weight:600;
    letter-spacing:.06em;
    color:var(--brand);
    background:rgba(47,227,192,.13);
    border:1px solid rgba(47,227,192,.3);
    border-radius:999px;
    padding:3px 8px;
    line-height:1;
  }
  .nav-links{
    display:flex;
    align-items:center;
    gap:6px;
    margin-left:8px;
  }
  .nav-link{
    position:relative;
    display:inline-block;
    padding:10px 14px;
    font-size:15px;
    color:var(--text-1);
    border-radius:10px;
    transition:color .22s var(--ease),background .22s var(--ease);
  }
  .nav-link:hover{color:var(--text-0);background:rgba(255,255,255,.06);}
  .nav-link.is-active{color:var(--text-0);font-weight:600;}
  .nav-link.is-active::after{
    content:"";
    position:absolute;
    left:14px;right:14px;bottom:2px;
    height:2px;
    border-radius:2px;
    background:var(--grad);
  }
  .header-right{
    margin-left:auto;
    display:flex;
    align-items:center;
    gap:12px;
  }
  .icon-btn{
    width:40px;height:40px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    border-radius:10px;
    border:1px solid var(--glass-line);
    background:rgba(255,255,255,.05);
    color:var(--text-1);
    cursor:pointer;
    transition:all .22s var(--ease);
  }
  .icon-btn:hover{color:var(--brand);border-color:rgba(47,227,192,.45);background:rgba(47,227,192,.08);}
  .menu-toggle{
    display:none;
    width:42px;height:42px;
    align-items:center;
    justify-content:center;
    border-radius:10px;
    border:1px solid var(--glass-line);
    background:rgba(255,255,255,.05);
    color:var(--text-0);
    cursor:pointer;
    font-size:17px;
  }
  .mobile-menu{
    display:none;
    border-top:1px solid var(--line);
    background:rgba(6,10,20,.97);
    padding:12px 0 18px;
  }
  .mobile-menu.is-open{display:block;}
  .mobile-menu a{
    display:block;
    padding:12px 24px;
    font-size:15px;
    color:var(--text-1);
    border-left:2px solid transparent;
  }
  .mobile-menu a:hover,
  .mobile-menu a.is-active{
    color:var(--brand);
    background:rgba(47,227,192,.06);
    border-left-color:var(--brand);
  }

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    padding:14px 24px;
    font-size:15px;
    font-weight:600;
    line-height:1;
    border-radius:var(--r-btn);
    border:1px solid transparent;
    cursor:pointer;
    text-align:center;
    transition:all .24s var(--ease);
  }
  .btn-primary{
    background:var(--grad);
    color:#04121A;
    box-shadow:inset 0 1px 0 rgba(255,255,255,.25),0 10px 30px rgba(47,227,192,.24);
  }
  .btn-primary:hover{
    filter:brightness(1.08);
    transform:translateY(-1px);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.32),0 14px 40px rgba(47,227,192,.38);
  }
  .btn-primary:active{transform:translateY(0);filter:brightness(.98);}
  .btn-ghost{
    background:var(--glass-bg);
    border-color:var(--glass-line);
    color:var(--text-0);
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
  }
  .btn-ghost:hover{
    border-color:rgba(47,227,192,.45);
    color:var(--brand);
    transform:translateY(-1px);
    box-shadow:0 10px 28px rgba(0,0,0,.35);
  }
  .btn-sm{padding:11px 18px;font-size:14px;}
  .btn-block{width:100%;}
  .text-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    color:var(--brand);
    font-size:14px;
    font-weight:600;
  }
  .text-link i{transition:transform .22s var(--ease);}
  .text-link:hover i{transform:translateX(3px);}

  /* ============ 徽章 / 标签 ============ */
  .badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:5px 12px;
    font-size:12px;
    font-weight:600;
    letter-spacing:.04em;
    line-height:1;
    border-radius:999px;
    background:rgba(47,227,192,.13);
    color:var(--brand);
    border:1px solid rgba(47,227,192,.28);
  }
  .badge-violet{
    background:rgba(138,92,255,.14);
    color:#B79CFF;
    border-color:rgba(138,92,255,.32);
  }
  .badge-blue{
    background:rgba(91,140,255,.14);
    color:#9DB8FF;
    border-color:rgba(91,140,255,.32);
  }
  .tag{
    display:inline-block;
    padding:4px 10px;
    font-size:12px;
    line-height:1.4;
    border-radius:8px;
    color:var(--text-1);
    background:rgba(255,255,255,.055);
    border:1px solid var(--line);
  }

  /* ============ 页面 Hero ============ */
  .page-hero{
    position:relative;
    padding:150px 0 64px;
    min-height:46vh;
    overflow:hidden;
    border-bottom:1px solid var(--line);
  }
  .page-hero::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:url('/assets/images/backpic/back-2.webp');
    background-size:cover;
    background-position:center;
    opacity:.30;
    filter:saturate(120%);
  }
  .page-hero::after{
    content:"";
    position:absolute;
    inset:0;
    background:
      radial-gradient(900px 420px at 18% 12%,rgba(47,227,192,.16),transparent 70%),
      radial-gradient(760px 420px at 82% 0%,rgba(138,92,255,.18),transparent 72%),
      linear-gradient(180deg,rgba(6,10,20,.72),rgba(6,10,20,.96));
  }
  .page-hero .container{position:relative;z-index:2;}
  .page-hero h1{
    font-size:clamp(28px,4vw,48px);
    line-height:1.18;
    margin:18px 0 16px;
    max-width:900px;
  }
  .hero-lead{
    max-width:640px;
    font-size:17px;
    line-height:1.85;
    color:var(--text-1);
  }
  .hero-actions{
    margin-top:26px;
    display:flex;
    align-items:center;
    gap:16px;
    flex-wrap:wrap;
  }
  .hero-note{
    font-size:13px;
    color:var(--text-2);
  }

  /* ============ 主体：锚点 + 内容 ============ */
  .flow-wrap{
    display:grid;
    grid-template-columns:230px minmax(0,1fr);
    gap:44px;
    align-items:start;
  }
  .anchor-nav{
    position:sticky;
    top:96px;
    padding:22px 18px;
    background:var(--bg-1);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-1);
  }
  .anchor-title{
    font-size:12px;
    letter-spacing:.08em;
    color:var(--text-2);
    margin-bottom:14px;
    font-weight:600;
  }
  .anchor-nav ul{display:flex;flex-direction:column;gap:4px;}
  .anchor-nav a{
    display:block;
    padding:9px 12px;
    font-size:14px;
    color:var(--text-1);
    border-left:2px solid transparent;
    border-radius:0 8px 8px 0;
    transition:all .22s var(--ease);
  }
  .anchor-nav a:hover{color:var(--text-0);background:rgba(255,255,255,.05);}
  .anchor-nav a.is-current{
    color:var(--brand);
    border-left-color:var(--brand);
    background:rgba(47,227,192,.08);
    font-weight:600;
  }

  /* ============ 图文交错区块 ============ */
  .flow-block{
    display:grid;
    grid-template-columns:minmax(0,1fr) minmax(0,1fr);
    gap:36px;
    align-items:center;
    padding:32px;
    background:var(--bg-1);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    box-shadow:var(--sh-1);
    margin-bottom:28px;
    scroll-margin-top:96px;
    transition:border-color .26s var(--ease),transform .26s var(--ease);
  }
  .flow-block:hover{border-color:rgba(47,227,192,.28);transform:translateY(-2px);}
  .flow-block.is-reverse .flow-media{order:-1;}
  .flow-media{
    position:relative;
    border-radius:var(--r-card);
    overflow:hidden;
    border:1px solid var(--glass-line);
    aspect-ratio:16/9;
    background:linear-gradient(135deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  }
  .flow-media img{
    width:100%;height:100%;
    object-fit:cover;
    transition:transform .5s var(--ease);
  }
  .flow-block:hover .flow-media img{transform:scale(1.03);}
  .flow-media::after{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(6,10,20,.05),rgba(6,10,20,.45));
  }
  .flow-body h2{
    font-size:26px;
    margin:14px 0 12px;
  }
  .flow-body p{
    font-size:15.5px;
    color:var(--text-1);
    line-height:1.85;
    margin-bottom:12px;
  }
  .feature-list{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
  .feature-list li{
    position:relative;
    padding-left:24px;
    font-size:14.5px;
    color:var(--text-1);
    line-height:1.75;
  }
  .feature-list li::before{
    content:"";
    position:absolute;
    left:0;top:9px;
    width:8px;height:8px;
    border-radius:2px;
    background:var(--grad);
    box-shadow:0 0 10px rgba(47,227,192,.45);
  }
  .feature-list li strong{color:var(--text-0);font-weight:600;}

  /* ============ 节奏表 ============ */
  .rate-table{
    margin-top:18px;
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
    background:var(--bg-2);
  }
  .rate-row{
    display:grid;
    grid-template-columns:1fr 1fr 1.4fr;
    gap:12px;
    padding:13px 18px;
    font-size:14px;
    color:var(--text-1);
    border-bottom:1px solid var(--line);
  }
  .rate-row:last-child{border-bottom:0;}
  .rate-row.is-head{
    background:rgba(255,255,255,.04);
    font-size:12.5px;
    letter-spacing:.04em;
    color:var(--text-2);
    font-weight:600;
  }
  .rate-row span:first-child{
    font-family:var(--font-num);
    font-variant-numeric:tabular-nums;
    color:var(--brand);
  }
  .rate-row.is-head span:first-child{color:var(--text-2);font-family:var(--font-sans);}

  /* ============ 数字概览 ============ */
  .stat-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
    margin-top:36px;
  }
  .stat-card{
    padding:22px 20px;
    background:var(--bg-2);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    transition:border-color .24s var(--ease),transform .24s var(--ease);
  }
  .stat-card:hover{border-color:rgba(47,227,192,.35);transform:translateY(-2px);}
  .stat-num{
    font-family:var(--font-num);
    font-variant-numeric:tabular-nums;
    font-size:30px;
    font-weight:700;
    line-height:1.1;
    background:var(--grad);
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
  }
  .stat-num small{font-size:13px;margin-left:3px;color:var(--text-1);-webkit-text-fill-color:var(--text-1);}
  .stat-label{
    margin-top:8px;
    font-size:13.5px;
    color:var(--text-1);
    line-height:1.6;
  }

  /* ============ FAQ ============ */
  .faq-list{
    border-top:1px solid var(--line);
  }
  .faq-item{
    border-bottom:1px solid var(--line);
  }
  .faq-question{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    padding:22px 4px;
    background:none;
    border:0;
    color:var(--text-0);
    font-size:16.5px;
    font-weight:600;
    text-align:left;
    cursor:pointer;
    transition:color .22s var(--ease);
  }
  .faq-question:hover{color:var(--brand);}
  .faq-question i{
    flex-shrink:0;
    font-size:13px;
    color:var(--brand);
    transition:transform .26s var(--ease);
  }
  .faq-item.is-open .faq-question i{transform:rotate(180deg);}
  .faq-answer{
    max-height:0;
    overflow:hidden;
    transition:max-height .3s var(--ease);
  }
  .faq-answer p{
    padding:0 4px 22px;
    font-size:15px;
    line-height:1.8;
    color:var(--text-1);
  }

  /* ============ CTA ============ */
  .cta-band{
    position:relative;
    padding:56px;
    border-radius:var(--r-lg);
    background:var(--bg-1);
    border:1px solid var(--line);
    overflow:hidden;
    display:grid;
    grid-template-columns:1.05fr .95fr;
    gap:40px;
    align-items:center;
  }
  .cta-band::before{
    content:"";
    position:absolute;
    inset:0;
    background:
      radial-gradient(680px 320px at 8% 20%,rgba(47,227,192,.16),transparent 70%),
      radial-gradient(620px 340px at 96% 90%,rgba(255,122,69,.13),transparent 72%);
    pointer-events:none;
  }
  .cta-band > *{position:relative;z-index:2;}
  .cta-band h2{font-size:30px;margin-bottom:14px;}
  .cta-band p{color:var(--text-1);font-size:15.5px;line-height:1.85;}
  .cta-points{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
  .cta-points li{
    display:flex;
    align-items:flex-start;
    gap:10px;
    font-size:14.5px;
    color:var(--text-1);
  }
  .cta-points i{color:var(--brand);margin-top:5px;font-size:12px;}
  .glass-card{
    padding:28px;
    border-radius:var(--r-card);
    background:var(--glass-bg);
    border:1px solid var(--glass-line);
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    box-shadow:var(--sh-2);
  }
  .glass-card h3{font-size:19px;margin-bottom:10px;}
  .glass-card p{font-size:14.5px;color:var(--text-1);line-height:1.8;}
  .glass-card .btn{margin-top:20px;}
  .glass-meta{
    margin-top:18px;
    padding-top:16px;
    border-top:1px solid var(--line);
    font-size:13px;
    color:var(--text-2);
    line-height:1.9;
  }

  /* ============ 页脚 ============ */
  .site-footer{
    margin-top:0;
    padding:64px 0 28px;
    background:var(--bg-1);
    border-top:1px solid var(--line);
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1.2fr;
    gap:36px;
  }
  .footer-brand{
    display:inline-flex;
    align-items:baseline;
    gap:8px;
    margin-bottom:14px;
  }
  .footer-text{
    font-size:14px;
    color:var(--text-1);
    line-height:1.8;
    max-width:340px;
  }
  .footer-col h4{
    font-size:14px;
    color:var(--text-0);
    margin-bottom:16px;
    letter-spacing:.02em;
  }
  .footer-col ul{display:flex;flex-direction:column;gap:10px;}
  .footer-col a{
    font-size:14px;
    color:var(--text-1);
  }
  .footer-col a:hover{color:var(--brand);}
  .footer-bottom{
    margin-top:44px;
    padding-top:20px;
    border-top:1px solid var(--line);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    font-size:13px;
    color:var(--text-2);
  }
  .to-top{
    color:var(--text-1);
    font-size:13px;
    padding:6px 12px;
    border-radius:8px;
    border:1px solid var(--line);
    transition:all .22s var(--ease);
  }
  .to-top:hover{color:var(--brand);border-color:rgba(47,227,192,.4);}

  .fade-up{animation:fadeUp .5s var(--ease) both;}
  @keyframes fadeUp{
    from{opacity:0;transform:translateY(8px);}
    to{opacity:1;transform:translateY(0);}
  }

  /* ============ 响应式 ============ */
  @media (max-width:1279px){
    .container{max-width:1140px;}
  }
  @media (max-width:1023px){
    .nav-links{display:none;}
    .header-right .btn{display:none;}
    .menu-toggle{display:inline-flex;}
    .header-inner{min-height:66px;gap:16px;}
    .section{padding:72px 0;}
    .page-hero{padding:120px 0 52px;min-height:auto;}
    .flow-wrap{grid-template-columns:1fr;gap:28px;}
    .anchor-nav{
      position:static;
      padding:14px;
      border-radius:var(--r-card);
    }
    .anchor-title{display:none;}
    .anchor-nav ul{
      flex-direction:row;
      gap:8px;
      overflow-x:auto;
      padding-bottom:4px;
      scrollbar-width:thin;
    }
    .anchor-nav a{
      white-space:nowrap;
      border-left:0;
      border:1px solid var(--line);
      border-radius:999px;
      padding:8px 14px;
      font-size:13.5px;
    }
    .anchor-nav a.is-current{
      border-color:rgba(47,227,192,.5);
      background:rgba(47,227,192,.1);
    }
    .cta-band{grid-template-columns:1fr;padding:36px;}
    .stat-grid{grid-template-columns:repeat(2,1fr);}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .footer-text{max-width:none;}
  }
  @media (max-width:767px){
    .section{padding:56px 0;}
    .page-hero{padding:106px 0 44px;}
    .hero-lead{font-size:15.5px;}
    .flow-block{
      grid-template-columns:minmax(0,1fr);
      padding:22px;
      gap:20px;
      border-radius:var(--r-card);
    }
    .flow-block.is-reverse .flow-media{order:0;}
    .flow-body h2{font-size:22px;}
    .rate-row{
      grid-template-columns:1fr;
      gap:4px;
      padding:12px 16px;
      font-size:13.5px;
    }
    .rate-row.is-head{display:none;}
    .rate-row span:first-child{font-size:13px;}
    .cta-band{padding:26px;border-radius:var(--r-card);}
    .cta-band h2{font-size:24px;}
    .glass-card{padding:22px;}
  }
  @media (max-width:559px){
    .container{padding-left:18px;padding-right:18px;}
    .brand-main{font-size:18px;}
    .brand-tag{font-size:10px;padding:2px 7px;}
    .stat-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .hero-actions{flex-direction:column;align-items:stretch;}
    .hero-actions .btn{width:100%;}
    .hero-note{text-align:center;}
    .faq-question{font-size:15px;padding:18px 2px;}
  }

/* roulang page: category3 */
:root{
    --bg-0:#060A14;
    --bg-1:#0B1224;
    --bg-2:#111A30;
    --line:rgba(140,170,220,.14);
    --text-0:#E9F1FF;
    --text-1:#A7B6CE;
    --text-2:#6E7D96;
    --brand:#2FE3C0;
    --brand-2:#5B8CFF;
    --accent:#8A5CFF;
    --warn:#FF7A45;
    --grad:linear-gradient(120deg,#2FE3C0,#5B8CFF 55%,#8A5CFF);
    --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
    --font-num:"DIN Alternate","Bahnschrift",ui-monospace,monospace;
    --sh-1:0 6px 20px rgba(0,0,0,.35);
    --sh-2:0 18px 48px rgba(0,0,0,.5);
    --glow:0 0 0 1px rgba(47,227,192,.40),0 10px 30px rgba(47,227,192,.28);
    --r-btn:12px;
    --r-input:14px;
    --r-card:20px;
    --r-lg:28px;
    --ease:cubic-bezier(.2,.8,.2,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    background:var(--bg-0);
    color:var(--text-1);
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  a{color:inherit;text-decoration:none;}
  img{display:block;max-width:100%;}
  button,input,select,textarea{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  p{margin:0;}
  ::selection{background:rgba(47,227,192,.28);color:#FFFFFF;}
  ::-webkit-scrollbar{width:10px;height:10px;}
  ::-webkit-scrollbar-track{background:var(--bg-0);}
  ::-webkit-scrollbar-thumb{background:rgba(140,170,220,.22);border-radius:8px;}
  ::-webkit-scrollbar-thumb:hover{background:rgba(47,227,192,.42);}
  :focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
  .section{padding:96px 0;}
  .section-title{
    font-size:clamp(26px,2.9vw,34px);
    line-height:1.25;
    font-weight:700;
    color:var(--text-0);
    margin:0;
    letter-spacing:.01em;
  }
  .lead{font-size:16px;line-height:1.85;color:var(--text-1);margin-top:14px;}
  .muted{font-size:14px;line-height:1.6;color:var(--text-2);}
  .num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.01em;}

  /* ---------- 导航 ---------- */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:60;
    background:rgba(255,255,255,.06);
    border-bottom:1px solid rgba(255,255,255,.10);
    box-shadow:0 8px 30px rgba(0,0,0,.28);
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(6,10,20,.95);
    border-bottom-color:var(--line);
    box-shadow:0 10px 34px rgba(0,0,0,.5);
  }
  .header-inner{display:flex;align-items:center;gap:22px;height:74px;}
  .logo{display:flex;align-items:center;gap:8px;flex:none;}
  .brand-main{
    font-size:20px;font-weight:700;letter-spacing:.02em;
    background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
    transition:filter .22s var(--ease);
  }
  .logo:hover .brand-main{filter:brightness(1.15);}
  .brand-tag{
    font-size:12px;font-weight:600;letter-spacing:.04em;line-height:1;
    color:var(--brand);
    background:rgba(47,227,192,.10);
    border:1px solid rgba(47,227,192,.35);
    border-radius:999px;padding:4px 8px;
  }
  .nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
  .nav-link{
    position:relative;padding:10px 14px;border-radius:10px;
    font-size:15px;color:var(--text-1);white-space:nowrap;
    transition:color .2s var(--ease),background .2s var(--ease);
  }
  .nav-link:hover{color:var(--text-0);background:rgba(255,255,255,.06);}
  .nav-link:active{background:rgba(255,255,255,.10);}
  .nav-link.is-active{color:var(--text-0);font-weight:600;}
  .nav-link.is-active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;
    background:var(--brand);box-shadow:0 0 10px rgba(47,227,192,.75);
  }
  .header-actions{display:flex;align-items:center;gap:10px;flex:none;}
  .icon-btn{
    display:inline-flex;align-items:center;justify-content:center;
    width:38px;height:38px;border-radius:10px;cursor:pointer;
    background:rgba(255,255,255,.055);
    border:1px solid rgba(255,255,255,.10);
    color:var(--text-1);
    transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
  }
  .icon-btn:hover{color:var(--brand);border-color:rgba(47,227,192,.42);background:rgba(47,227,192,.10);}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 24px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;line-height:1.2;
    border:1px solid transparent;cursor:pointer;
    transition:transform .2s var(--ease),box-shadow .22s var(--ease),filter .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
  }
  .btn-sm{padding:9px 16px;font-size:14px;}
  .btn-primary{
    background:var(--grad);
    color:#04121A;
    box-shadow:inset 0 1px 0 rgba(255,255,255,.25),var(--glow);
  }
  .btn-primary:hover{
    filter:brightness(1.08);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.30),0 0 0 1px rgba(47,227,192,.60),0 14px 40px rgba(47,227,192,.40);
  }
  .btn-primary:active{transform:translateY(1px);filter:brightness(.98);}
  .btn-ghost{
    background:rgba(255,255,255,.055);
    border-color:rgba(255,255,255,.10);
    color:var(--text-0);
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
  }
  .btn-ghost:hover{border-color:rgba(47,227,192,.45);color:var(--brand);background:rgba(47,227,192,.08);}
  .btn-ghost:active{transform:translateY(1px);}
  .text-btn{
    display:inline-flex;align-items:center;gap:6px;
    font-size:14px;font-weight:600;color:var(--brand);
    background:none;border:0;padding:0;cursor:pointer;
    transition:color .2s var(--ease);
  }
  .text-btn span.arrow{transition:transform .2s var(--ease);}
  .text-btn:hover{color:#7BF5DC;}
  .text-btn:hover span.arrow{transform:translateX(2px);}

  /* ---------- 徽章 / 标签 ---------- */
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    font-size:12px;font-weight:600;letter-spacing:.04em;line-height:1;
    color:var(--brand);
    background:rgba(47,227,192,.10);
    border:1px solid rgba(47,227,192,.30);
    border-radius:999px;padding:6px 11px;
  }
  .badge-alt{color:var(--brand-2);background:rgba(91,140,255,.10);border-color:rgba(91,140,255,.30);}
  .tag{
    display:inline-flex;align-items:center;
    font-size:13px;line-height:1;
    color:var(--text-1);
    background:rgba(255,255,255,.05);
    border:1px solid var(--line);
    border-radius:999px;padding:7px 12px;
    transition:color .2s var(--ease),border-color .2s var(--ease);
  }
  .tag:hover{color:var(--brand);border-color:rgba(47,227,192,.40);}

  /* ---------- Hero ---------- */
  .page-hero{
    position:relative;
    padding:158px 0 76px;
    background:var(--bg-0) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    border-bottom:1px solid var(--line);
    overflow:hidden;
  }
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background:
      radial-gradient(760px 420px at 16% 8%,rgba(47,227,192,.20),transparent 62%),
      radial-gradient(680px 400px at 86% 22%,rgba(138,92,255,.20),transparent 66%),
      linear-gradient(180deg,rgba(6,10,20,.78) 0%,rgba(6,10,20,.92) 62%,var(--bg-0) 100%);
    pointer-events:none;
  }
  .page-hero .container{position:relative;z-index:2;}
  .hero-inner{max-width:860px;}
  .page-title{
    margin:18px 0 0;
    font-size:clamp(29px,4.1vw,48px);
    line-height:1.18;font-weight:700;color:var(--text-0);
    letter-spacing:.005em;
  }
  .page-title em{
    font-style:normal;
    background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .hero-sub{max-width:660px;margin-top:18px;font-size:16px;line-height:1.85;color:var(--text-1);}

  .search-shell{
    display:flex;align-items:center;gap:10px;
    max-width:620px;margin-top:28px;
    padding:6px 6px 6px 16px;
    background:rgba(255,255,255,.055);
    border:1px solid rgba(255,255,255,.10);
    border-radius:var(--r-input);
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    box-shadow:var(--sh-1);
    transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
  }
  .search-shell:focus-within{
    border-color:rgba(47,227,192,.60);
    box-shadow:0 0 0 2px rgba(47,227,192,.35),var(--sh-1);
  }
  .search-shell svg{flex:none;color:var(--text-2);}
  .search-shell input{
    flex:1;min-width:0;
    background:transparent;border:0;outline:none;
    padding:11px 0;font-size:15px;color:var(--text-0);
  }
  .search-shell input::placeholder{color:var(--text-2);}
  .hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}

  /* ---------- 状态条 ---------- */
  .status-band{
    background:var(--bg-1);
    border-bottom:1px solid var(--line);
    padding:56px 0;
  }
  .status-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .status-item{
    padding:22px 24px;
    background:rgba(255,255,255,.02);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    transition:border-color .22s var(--ease),transform .22s var(--ease);
  }
  .status-item:hover{border-color:rgba(47,227,192,.38);transform:translateY(-2px);}
  .status-num{
    font-family:var(--font-num);font-variant-numeric:tabular-nums;
    font-size:clamp(24px,2.6vw,30px);font-weight:700;line-height:1.2;
    color:var(--brand);letter-spacing:.01em;
  }
  .status-item h3{margin:8px 0 6px;font-size:16px;font-weight:600;color:var(--text-0);}
  .status-item p{font-size:14px;line-height:1.75;color:var(--text-2);}

  /* ---------- 处理路径 ---------- */
  .path-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;}
  .path-visual{margin-top:26px;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1);background:var(--bg-2);}
  .path-visual img{width:100%;aspect-ratio:16/9;object-fit:cover;}
  .step-item{display:flex;gap:20px;padding:24px 0;border-bottom:1px solid var(--line);}
  .step-item:first-child{padding-top:0;}
  .step-item:last-child{border-bottom:0;padding-bottom:0;}
  .step-num{
    flex:none;width:46px;height:46px;border-radius:14px;
    display:flex;align-items:center;justify-content:center;
    font-family:var(--font-num);font-variant-numeric:tabular-nums;
    font-size:15px;font-weight:700;color:var(--brand);
    background:rgba(47,227,192,.10);
    border:1px solid rgba(47,227,192,.30);
  }
  .step-item h3{margin:6px 0 8px;font-size:18px;font-weight:600;color:var(--text-0);}
  .step-item p{font-size:15px;line-height:1.8;color:var(--text-1);}

  /* ---------- FAQ ---------- */
  .faq-section{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
  .faq-aside{position:sticky;top:112px;}
  .faq-aside .lead{max-width:300px;}
  .faq-panel{
    background:rgba(255,255,255,.02);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    padding:8px 30px;
    box-shadow:var(--sh-1);
  }
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item:last-child{border-bottom:0;}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:26px 0;background:none;border:0;text-align:left;cursor:pointer;
    font-size:17px;font-weight:600;line-height:1.55;color:var(--text-0);
    transition:color .2s var(--ease);
  }
  .faq-q:hover{color:var(--brand);}
  .faq-q:active{color:#7BF5DC;}
  .faq-icon{flex:none;color:var(--brand);transition:transform .26s var(--ease);}
  .faq-item.open .faq-icon{transform:rotate(180deg);}
  .faq-item.open .faq-q{color:var(--brand);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
  .faq-a-inner{padding:0 44px 26px 0;font-size:15px;line-height:1.85;color:var(--text-1);}

  /* ---------- 帮助 + 联系 ---------- */
  .support-grid{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start;}
  .help-list{display:grid;grid-template-columns:1fr;gap:16px;}
  .help-card{
    display:flex;gap:18px;
    background:var(--bg-2);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:24px;
    transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  }
  .help-card:hover{transform:translateY(-2px);border-color:rgba(47,227,192,.40);box-shadow:var(--sh-1);}
  .help-ico{
    flex:none;width:44px;height:44px;border-radius:12px;
    display:flex;align-items:center;justify-content:center;
    color:var(--brand);
    background:rgba(47,227,192,.10);
    border:1px solid rgba(47,227,192,.26);
  }
  .help-card h3{margin:2px 0 8px;font-size:17px;font-weight:600;color:var(--text-0);}
  .help-card p{font-size:14px;line-height:1.75;color:var(--text-1);margin-bottom:12px;}

  .contact-card{
    background:rgba(255,255,255,.055);
    border:1px solid rgba(255,255,255,.10);
    border-radius:var(--r-lg);
    padding:30px;
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    box-shadow:var(--sh-2);
    position:sticky;top:112px;
  }
  .contact-card h3{margin:14px 0 10px;font-size:22px;font-weight:700;color:var(--text-0);}
  .contact-card p{font-size:15px;line-height:1.8;color:var(--text-1);}
  .contact-list{margin:22px 0 24px;display:grid;gap:12px;}
  .contact-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;line-height:1.6;color:var(--text-1);}
  .contact-list li .dot{flex:none;width:6px;height:6px;border-radius:50%;margin-top:9px;background:var(--brand);}
  .contact-card .btn{width:100%;}
  .contact-note{margin-top:14px;font-size:13px;line-height:1.7;color:var(--text-2);}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 0;}
  .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:32px;}
  .footer-brand{display:flex;align-items:center;gap:8px;margin-bottom:16px;}
  .footer-text{font-size:14px;line-height:1.8;color:var(--text-2);max-width:340px;}
  .footer-col h4{margin:0 0 16px;font-size:14px;font-weight:600;letter-spacing:.04em;color:var(--text-0);}
  .footer-col ul{display:grid;gap:10px;}
  .footer-col a{font-size:14px;color:var(--text-1);transition:color .2s var(--ease);}
  .footer-col a:hover{color:var(--brand);}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    margin-top:44px;padding:20px 0;
    border-top:1px solid var(--line);
    font-size:13px;color:var(--text-2);
  }
  .to-top{color:var(--text-1);font-size:13px;transition:color .2s var(--ease);}
  .to-top:hover{color:var(--brand);}

  /* ---------- 动效 ---------- */
  @keyframes rise{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:translateY(0);}}
  .rise{animation:rise .5s var(--ease) both;}

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

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .section{padding:72px 0;}
    .status-band{padding:44px 0;}
    .path-grid{grid-template-columns:1fr;gap:36px;}
    .faq-grid{grid-template-columns:1fr;gap:32px;}
    .faq-aside{position:static;}
    .faq-aside .lead{max-width:none;}
    .support-grid{grid-template-columns:1fr;gap:24px;}
    .contact-card{position:static;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  }

  @media (max-width:900px){
    .header-inner{flex-wrap:wrap;height:auto;padding-top:12px;gap:10px;}
    .nav-links{order:3;width:100%;margin:0 -14px;padding:0 14px 10px;overflow-x:auto;scrollbar-width:none;}
    .nav-links::-webkit-scrollbar{display:none;}
    .header-actions{margin-left:auto;}
    .icon-btn{display:none;}
    .page-hero{padding:170px 0 60px;}
  }

  @media (max-width:767px){
    .status-grid{grid-template-columns:1fr;gap:16px;}
    .faq-panel{padding:4px 20px;border-radius:var(--r-card);}
    .faq-q{font-size:16px;padding:22px 0;}
    .faq-a-inner{padding:0 26px 22px 0;}
    .page-hero{padding:164px 0 52px;}
  }

  @media (max-width:520px){
    .section{padding:56px 0;}
    .container{padding:0 16px;}
    .brand-main{font-size:18px;}
    .btn{padding:11px 20px;font-size:15px;}
    .btn-sm{padding:9px 14px;font-size:14px;}
    .search-shell{flex-wrap:wrap;padding:10px 10px 10px 14px;}
    .search-shell input{flex:1 1 100%;padding:6px 0;}
    .search-shell .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;}
    .help-card{padding:20px;gap:14px;}
    .contact-card{padding:24px;}
  }