/* roulang page: index */
:root{
  --bg:#04070D;
  --bg-soft:#080D18;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.07);
  --line:rgba(120,170,255,.16);
  --line-strong:rgba(120,170,255,.32);
  --brand:#2F6BFF;
  --brand-soft:rgba(47,107,255,.12);
  --accent:#4FE3C1;
  --accent-soft:rgba(79,227,193,.12);
  --amber:#FFC46B;
  --amber-soft:rgba(255,196,107,.12);
  --danger:#FF7A7A;
  --text:#E8EEFF;
  --text-2:#9BAAC6;
  --text-3:#66748F;
  --r-card:18px;
  --r-img:16px;
  --r-btn:999px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.7);
  --shadow-hover:0 26px 52px -26px rgba(0,0,0,.85);
  --glow:0 12px 34px -14px rgba(47,107,255,.85);
  --sp:88px;
  --ease:200ms cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.75;font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:8px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sp) 0}
.section-tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.06em;color:var(--accent);background:var(--accent-soft);border:1px solid rgba(79,227,193,.24);border-radius:999px;padding:5px 14px;margin-bottom:16px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
h1,.h1{font-size:clamp(28px,4.4vw,48px);font-weight:700;line-height:1.2;letter-spacing:-.01em}
h2,.h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
h3,.h3{font-size:20px;font-weight:600;line-height:1.45}
.lead{color:var(--text-2);font-size:17px;line-height:1.75}
.muted{color:var(--text-2)}
.dim{color:var(--text-3)}
.h2-mark{display:inline-flex;align-items:center;gap:12px}
.h2-mark::before{content:"";width:4px;height:20px;border-radius:4px;background:var(--brand)}

/* ============ 导航：悬浮胶囊 ============ */
.site-header{position:sticky;top:0;z-index:60;padding:14px 0;background:transparent}
.nav-shell{display:flex;align-items:center;gap:20px;height:64px;padding:0 12px 0 20px;border-radius:999px;background:rgba(8,13,24,.72);border:1px solid var(--line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow);transition:height var(--ease),background var(--ease)}
.site-header.is-scrolled .nav-shell{height:52px;background:rgba(8,13,24,.9)}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.brand-dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--accent));box-shadow:0 0 12px rgba(79,227,193,.55);flex:0 0 auto}
.brand small{color:var(--text-3);font-size:12px;font-weight:500;letter-spacing:.06em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:999px;font-size:14px;color:var(--text-2);transition:color var(--ease),background var(--ease)}
.nav-links a::after{content:"";position:absolute;left:50%;bottom:4px;width:0;height:2px;border-radius:2px;background:var(--accent);transform:translateX(-50%);transition:width var(--ease)}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-links a:hover::after{width:18px}
.nav-links a.is-active{color:var(--text);background:rgba(79,227,193,.1)}
.nav-links a.is-active::after{width:18px}
.nav-cta{margin-left:8px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;white-space:nowrap;transition:transform var(--ease),filter var(--ease),background var(--ease),border-color var(--ease),box-shadow var(--ease)}
.btn:active{transform:scale(.985)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--glow)}
.btn-primary:hover{filter:brightness(1.06)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line-strong)}
.btn-ghost:hover{background:rgba(47,107,255,.08);border-color:rgba(120,170,255,.5)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14px}
.link-arrow span{transition:transform var(--ease)}
.link-arrow:hover{color:var(--accent)}
.link-arrow:hover span{transform:translateX(3px)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:999px;border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle i{display:block;width:16px;height:1.6px;background:var(--text);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.nav-toggle.is-open i:nth-child(1){transform:translateY(3.3px) rotate(45deg)}
.nav-toggle.is-open i:nth-child(2){transform:translateY(-3.3px) rotate(-45deg)}
.mobile-panel{display:none}

/* ============ Hero ============ */
.hero{position:relative;isolation:isolate;min-height:82vh;display:flex;align-items:center;padding:56px 0 72px;overflow:hidden;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;border-bottom:1px solid rgba(120,170,255,.1)}
.hero::before{content:"";position:absolute;inset:0;z-index:-2;background:linear-gradient(180deg,rgba(4,7,13,.88) 0%,rgba(4,7,13,.9) 55%,rgba(4,7,13,.97) 100%)}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;background-image:linear-gradient(rgba(120,170,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(120,170,255,.05) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(ellipse at 50% 30%,#000 20%,transparent 76%);-webkit-mask-image:radial-gradient(ellipse at 50% 30%,#000 20%,transparent 76%)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center}
.hero h1{margin-bottom:18px}
.hero .hero-sub{font-size:17px;color:var(--text-2);max-width:520px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.mini-badge{display:inline-flex;align-items:center;gap:7px;font-size:12px;letter-spacing:.06em;color:var(--text-2);border:1px solid var(--line);background:var(--glass);border-radius:999px;padding:6px 13px}
.mini-badge i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block}
.hero-card{border-radius:var(--r-card);border:1px solid var(--line);background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.03));padding:26px;box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);backdrop-filter:blur(10px)}
.hero-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:18px}
.hero-card-head strong{font-size:15px;font-weight:600}
.status-pill{font-size:12px;color:var(--accent);background:var(--accent-soft);border:1px solid rgba(79,227,193,.26);border-radius:999px;padding:4px 11px}
.field-row{display:flex;flex-direction:column;gap:8px;margin-bottom:14px}
.field-row label{font-size:13px;color:var(--text-3)}
.fake-input{height:48px;border-radius:12px;border:1px solid var(--line);background:rgba(4,7,13,.6);display:flex;align-items:center;padding:0 14px;font-size:14px;color:var(--text-2)}
.hero-card-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3)}

/* ============ 痛点区 ============ */
.pain-list{border-top:1px solid rgba(120,170,255,.12)}
.pain-item{display:grid;grid-template-columns:96px minmax(0,1fr);gap:28px;align-items:start;padding:30px 0;border-bottom:1px solid rgba(120,170,255,.12)}
.pain-num{font-size:38px;font-weight:700;line-height:1;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:-.02em;opacity:.9}
.pain-item h3{margin-bottom:8px}
.pain-item p{color:var(--text-2);font-size:15.5px;max-width:720px}

/* ============ 解决方案 ============ */
.solution-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:28px;align-items:start}
.glass-card{border-radius:var(--r-card);border:1px solid var(--line);background:var(--glass);padding:26px;box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease)}
.glass-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.img-frame{position:relative;width:100%;aspect-ratio:16/9;border-radius:var(--r-img);overflow:hidden;background:linear-gradient(135deg,rgba(47,107,255,.24),rgba(79,227,193,.14))}
.img-frame img{width:100%;height:100%;object-fit:cover}
.point-list{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.point-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2)}
.point-list svg{flex:0 0 auto;margin-top:4px}
.steps{position:relative;padding-left:34px}
.steps::before{content:"";position:absolute;left:8px;top:8px;bottom:14px;width:2px;border-radius:2px;background:linear-gradient(180deg,var(--brand),rgba(79,227,193,.25))}
.step{position:relative;padding-bottom:26px}
.step:last-child{padding-bottom:0}
.step::before{content:"";position:absolute;left:-32px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(79,227,193,.14)}
.step b{display:block;font-size:13px;color:var(--brand);letter-spacing:.06em;margin-bottom:4px}
.step h3{font-size:17px;margin-bottom:4px}
.step p{font-size:14px;color:var(--text-2)}

/* ============ 数据带 ============ */
.stats-band{background:#04070D;border-top:1px solid rgba(120,170,255,.12);border-bottom:1px solid rgba(120,170,255,.12);position:relative;overflow:hidden}
.stats-band::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 240px at 22% 0%,rgba(47,107,255,.16),transparent 70%);opacity:.7}
.stats-grid{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;padding:56px 0}
.stat{display:flex;flex-direction:column;justify-content:flex-end;gap:8px;min-height:96px}
.stat b{font-size:clamp(34px,4vw,46px);font-weight:700;line-height:1;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:-.02em;text-shadow:0 0 26px rgba(79,227,193,.28)}
.stat span{font-size:14px;color:var(--text-2)}

/* ============ 客户证言 ============ */
.quote-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.quote-card{position:relative;border-radius:var(--r-card);border:1px solid var(--line);background:var(--glass);padding:32px 28px 26px;box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);transition:transform var(--ease),border-color var(--ease)}
.quote-card:hover{transform:translateY(-2px);border-color:var(--line-strong)}
.quote-card::before{content:"”";position:absolute;top:6px;left:20px;font-size:64px;line-height:1;color:rgba(47,107,255,.5);font-family:Georgia,serif}
.quote-card p{position:relative;font-size:16.5px;line-height:1.8;margin-bottom:22px}
.quote-meta{display:flex;align-items:center;gap:12px;padding-top:18px;border-top:1px solid var(--line)}
.avatar{width:40px;height:40px;border-radius:50%;flex:0 0 auto;background:linear-gradient(135deg,rgba(47,107,255,.6),rgba(79,227,193,.55))}
.quote-meta b{display:block;font-size:14.5px;font-weight:600}
.quote-meta span{font-size:13px;color:var(--text-3)}

/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{display:flex;flex-direction:column;border-radius:var(--r-card);border:1px solid var(--line);background:var(--glass);overflow:hidden;box-shadow:var(--shadow);transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease)}
.news-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.news-thumb{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,rgba(47,107,255,.28),rgba(79,227,193,.16))}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease-out}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:20px 22px 18px;display:flex;flex-direction:column;gap:10px;flex:1}
.badge{display:inline-flex;align-items:center;align-self:flex-start;font-size:12px;letter-spacing:.06em;border-radius:999px;padding:4px 11px;color:var(--brand);background:var(--brand-soft);border:1px solid rgba(47,107,255,.24)}
.badge-accent{color:var(--accent);background:var(--accent-soft);border-color:rgba(79,227,193,.26)}
.news-body h3{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line)}
.news-time{font-size:12.5px;color:var(--amber)}
.news-more{color:var(--text-3);font-size:18px;line-height:1;transition:transform var(--ease),color var(--ease)}
.news-card:hover .news-more{transform:translateX(4px);color:var(--accent)}
.empty-state{border-radius:var(--r-card);border:1px dashed var(--line-strong);background:var(--glass);padding:56px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px}
.empty-state p{font-size:15px;color:var(--text-2)}
.pager{display:flex;justify-content:center;gap:8px;margin-top:36px}
.pager a,.pager span{display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:38px;padding:0 12px;border-radius:999px;border:1px solid var(--line);font-size:14px;color:var(--text-2);transition:var(--ease)}
.pager a:hover{border-color:var(--line-strong);color:var(--text)}
.pager .is-current{background:var(--brand);border-color:var(--brand);color:#fff}

/* ============ FAQ ============ */
.faq-wrap{max-width:800px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:14px;background:var(--glass);margin-bottom:12px;overflow:hidden;transition:border-color var(--ease)}
.faq-item[open]{border-color:var(--line-strong)}
.faq-item summary{list-style:none;cursor:pointer;min-height:44px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;font-size:16px;font-weight:600}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;flex:0 0 auto;width:16px;height:16px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--accent);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{top:0;left:7px;width:2px;height:16px}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-item p{padding:0 20px 18px;font-size:15px;color:var(--text-2);line-height:1.75}

/* ============ CTA ============ */
.cta-band{position:relative;overflow:hidden;border-radius:22px;border:1px solid var(--line);background:linear-gradient(140deg,rgba(47,107,255,.16),rgba(255,255,255,.035) 55%);padding:44px 40px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.95fr);gap:32px;align-items:center;box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.07)}
.cta-band::before{content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(79,227,193,.22),transparent 68%);pointer-events:none}
.cta-band h2{margin-bottom:10px}
.cta-form{display:flex;gap:12px;position:relative}
.cta-form input{flex:1;height:48px;border-radius:12px;border:1px solid var(--line);background:rgba(4,7,13,.6);padding:0 16px;font-size:15px;color:var(--text);transition:border-color var(--ease),box-shadow var(--ease)}
.cta-form input::placeholder{color:var(--text-3)}
.cta-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(79,227,193,.55)}
.cta-note{margin-top:14px;font-size:13px;color:var(--text-3)}

/* ============ 页脚 ============ */
.site-footer{background:#04070D;border-top:1px solid rgba(120,170,255,.12);margin-top:var(--sp);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:44px}
.footer-brand p{font-size:14px;color:var(--text-2);margin:14px 0 16px;max-width:280px}
.footer-contact{font-size:13px;color:var(--text-3);line-height:1.9}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:20px 0 28px;border-top:1px solid rgba(120,170,255,.12);font-size:13px;color:var(--text-3)}
.social-slot{display:flex;gap:10px}
.social-slot span{width:32px;height:32px;border-radius:50%;border:1px solid var(--line);display:block}

/* ============ 返回顶部 ============ */
.to-top{position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;border:1px solid var(--line-strong);background:rgba(8,13,24,.86);backdrop-filter:blur(10px);color:var(--text);display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:var(--ease);z-index:70}
.to-top.is-visible{opacity:1;visibility:visible}
.to-top:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--sp:64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero{min-height:auto;padding:40px 0 64px}
  .solution-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px}
  .cta-band{grid-template-columns:1fr;padding:36px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px}
}
@media (max-width:768px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .nav-shell{padding:0 12px 0 16px}
  .brand{font-size:15px}
  .brand small{display:none}
  .mobile-panel{display:block;position:absolute;left:24px;right:24px;top:calc(100% - 4px);z-index:59;border-radius:20px;border:1px solid var(--line);background:rgba(8,13,24,.96);backdrop-filter:blur(16px);box-shadow:var(--shadow);padding:12px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:var(--ease)}
  .mobile-panel.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .mobile-panel a{display:flex;align-items:center;height:44px;padding:0 14px;border-radius:12px;font-size:15px;color:var(--text-2)}
  .mobile-panel a.is-active{color:var(--text);background:rgba(79,227,193,.1)}
  .mobile-panel .btn{margin-top:8px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .pain-item{grid-template-columns:56px minmax(0,1fr);gap:16px;padding:24px 0}
  .pain-num{font-size:28px}
  .quote-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .section-head{margin-bottom:28px}
  .cta-form{flex-direction:column}
  .cta-form .btn{width:100%}
}
@media (max-width:520px){
  .container{padding:0 20px}
  :root{--sp:48px}
  .hero-card{padding:20px}
  .glass-card{padding:20px}
  .footer-grid{grid-template-columns:1fr}
  .to-top{right:16px;bottom:16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .news-card:hover,.glass-card:hover,.quote-card:hover{transform:none}
}

/* roulang page: category1 */
:root{
    --bg:#04070D;
    --panel:#080D18;
    --glass:rgba(255,255,255,.045);
    --line:rgba(120,170,255,.16);
    --line-strong:rgba(120,170,255,.3);
    --primary:#2F6BFF;
    --accent:#4FE3C1;
    --amber:#FFC46B;
    --text:#E8EEFF;
    --muted:#9BAAC6;
    --dim:#66748F;
    --radius:18px;
    --radius-sm:12px;
    --shadow:0 18px 40px -24px rgba(0,0,0,.7);
    --glow:0 0 0 1px rgba(47,107,255,.35),0 18px 44px -20px rgba(47,107,255,.6);
    --ease:200ms ease-out;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;height:auto}
  a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease)}
  button{font-family:inherit;cursor:pointer}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  h1{font-size:40px;line-height:1.2;font-weight:700}
  h2{font-size:28px;line-height:1.3;font-weight:700}
  h3{font-size:20px;line-height:1.45;font-weight:600}
  p{font-size:16px;line-height:1.75}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  .section{padding:88px 0}
  .section-sm{padding:56px 0}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.06em;color:var(--accent);
    background:rgba(79,227,193,.12);border:1px solid rgba(79,227,193,.28);
    padding:5px 12px;border-radius:999px;
  }
  .eyebrow.is-blue{color:#9DBAFF;background:rgba(47,107,255,.14);border-color:rgba(47,107,255,.3)}
  .eyebrow.is-amber{color:var(--amber);background:rgba(255,196,107,.12);border-color:rgba(255,196,107,.3)}
  .sec-head{max-width:720px;margin-bottom:36px}
  .sec-head h2{display:flex;align-items:center;gap:12px}
  .sec-head h2::before{
    content:"";width:4px;height:22px;border-radius:3px;background:var(--primary);flex:none;
  }
  .sec-head p{color:var(--muted);margin-top:12px}
  .muted{color:var(--muted)}
  .dim{color:var(--dim)}
  .text-accent{color:var(--accent)}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    padding:14px 0;
    background:transparent;
    transition:padding var(--ease);
  }
  .site-header.is-scrolled{padding:8px 0}
  .nav-shell{
    display:flex;align-items:center;gap:18px;
    min-height:64px;padding:8px 10px 8px 20px;
    background:rgba(8,13,24,.72);
    border:1px solid var(--line);
    border-radius:999px;
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
    transition:min-height var(--ease),background-color var(--ease);
  }
  .site-header.is-scrolled .nav-shell{min-height:52px;background:rgba(8,13,24,.9)}
  .brand{
    display:inline-flex;align-items:center;gap:9px;
    font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;
  }
  .brand small{
    font-size:11px;font-weight:500;color:var(--accent);
    background:rgba(79,227,193,.12);border:1px solid rgba(79,227,193,.26);
    padding:1px 8px;border-radius:999px;
  }
  .brand-dot{
    width:10px;height:10px;border-radius:50%;flex:none;
    background:radial-gradient(circle at 30% 30%,#9FC0FF,var(--primary));
    box-shadow:0 0 12px rgba(47,107,255,.85);
  }
  .nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
  .nav-links a{
    position:relative;font-size:14px;color:var(--muted);
    padding:9px 12px;border-radius:999px;
  }
  .nav-links a::after{
    content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
    background:var(--accent);border-radius:2px;transform:scaleX(0);transform-origin:left;
    transition:transform var(--ease);
  }
  .nav-links a:hover{color:var(--text)}
  .nav-links a:hover::after{transform:scaleX(1)}
  .nav-links a.is-active{color:var(--text);background:rgba(79,227,193,.08)}
  .nav-links a.is-active::after{transform:scaleX(1)}
  .nav-links a.is-active::before{
    content:"";position:absolute;left:2px;top:50%;transform:translateY(-50%);
    width:5px;height:5px;border-radius:50%;background:var(--accent);
  }
  .nav-cta{margin-left:6px;flex:none}
  .nav-toggle{
    display:none;width:44px;height:44px;margin-left:auto;
    background:transparent;border:1px solid var(--line);border-radius:999px;
    align-items:center;justify-content:center;flex-direction:column;gap:5px;
  }
  .nav-toggle i{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
  .nav-toggle[aria-expanded="true"] i:first-child{transform:translateY(3.5px) rotate(45deg)}
  .nav-toggle[aria-expanded="true"] i:last-child{transform:translateY(-3.5px) rotate(-45deg)}
  .mobile-panel{
    display:none;flex-direction:column;gap:6px;
    margin-top:10px;padding:14px;
    background:rgba(8,13,24,.96);
    border:1px solid var(--line);border-radius:22px;
    backdrop-filter:blur(14px);box-shadow:var(--shadow);
  }
  .mobile-panel.is-open{display:flex}
  .mobile-panel a{
    min-height:44px;display:flex;align-items:center;
    padding:0 14px;border-radius:12px;font-size:15px;color:var(--muted);
  }
  .mobile-panel a:hover{background:rgba(255,255,255,.05);color:var(--text)}
  .mobile-panel a.is-active{color:var(--text);background:rgba(79,227,193,.1)}

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border:1px solid transparent;border-radius:999px;
    font-size:15px;font-weight:600;white-space:nowrap;
    transition:filter var(--ease),transform var(--ease),background-color var(--ease),border-color var(--ease),color var(--ease);
  }
  .btn:active{transform:scale(.985)}
  .btn-sm{height:40px;padding:0 18px;font-size:14px}
  .btn-block{width:100%}
  .btn-primary{background:var(--primary);color:#fff;box-shadow:var(--glow)}
  .btn-primary:hover{filter:brightness(1.06)}
  .btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
  .btn-ghost:hover{background:rgba(47,107,255,.08);border-color:rgba(47,107,255,.5)}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;
    color:#9DBAFF;font-size:14px;font-weight:600;
  }
  .link-arrow span{transition:transform var(--ease)}
  .link-arrow:hover{color:var(--accent)}
  .link-arrow:hover span{transform:translateX(3px)}

  /* ---------- Hero (compact) ---------- */
  .page-hero{
    position:relative;overflow:hidden;
    min-height:42vh;
    display:flex;align-items:center;
    margin-top:-92px;padding:150px 0 56px;
    border-bottom:1px solid var(--line);
  }
  .page-hero__bg{
    position:absolute;inset:0;
    background-image:url("/assets/images/backpic/back-2.png");
    background-size:cover;background-position:center;
    filter:saturate(.85);
  }
  .page-hero__mask{
    position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(4,7,13,.9) 0%,rgba(4,7,13,.82) 45%,rgba(4,7,13,.96) 100%);
  }
  .page-hero__grid{
    position:absolute;inset:0;opacity:.06;
    background-image:linear-gradient(rgba(120,170,255,.6) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(120,170,255,.6) 1px,transparent 1px);
    background-size:64px 64px;
  }
  .page-hero__glow{
    position:absolute;width:520px;height:520px;right:-120px;top:-160px;
    background:radial-gradient(circle,rgba(47,107,255,.28),transparent 62%);
    pointer-events:none;
  }
  .page-hero .container{position:relative;z-index:2}
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--dim);margin-bottom:18px}
  .breadcrumb a{color:var(--dim)}
  .breadcrumb a:hover{color:var(--accent)}
  .breadcrumb .sep{color:rgba(102,116,143,.6)}
  .page-hero h1{margin:16px 0 14px;max-width:820px}
  .page-hero .lead{font-size:17px;color:var(--muted);max-width:620px}
  .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
  .mini-badge{
    font-size:12px;letter-spacing:.06em;color:var(--muted);
    background:rgba(255,255,255,.045);border:1px solid var(--line);
    padding:6px 13px;border-radius:999px;
  }

  /* ---------- Cards ---------- */
  .glass{
    background:var(--glass);
    border:1px solid var(--line);
    border-radius:var(--radius);
    box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
  }
  .card-pad{padding:24px}

  /* ---------- Two column layout ---------- */
  .split{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:32px;align-items:start}
  .lead-figure{
    border-radius:16px;overflow:hidden;border:1px solid var(--line);
    aspect-ratio:16/9;background:linear-gradient(135deg,rgba(47,107,255,.22),rgba(79,227,193,.14));
  }
  .lead-figure img{width:100%;height:100%;object-fit:cover}
  .step-list{margin-top:28px;border-top:1px solid var(--line)}
  .step-item{
    display:grid;grid-template-columns:64px minmax(0,1fr);gap:18px;
    padding:22px 0;border-bottom:1px solid var(--line);
  }
  .step-item .num{
    font-size:26px;font-weight:700;color:var(--accent);line-height:1;
    padding-top:4px;letter-spacing:.02em;
  }
  .step-item h3{margin-bottom:6px}
  .step-item p{color:var(--muted);font-size:15px}
  .step-item .tag{
    display:inline-block;margin-top:10px;font-size:12px;color:var(--amber);
    background:rgba(255,196,107,.12);border:1px solid rgba(255,196,107,.26);
    padding:3px 10px;border-radius:999px;
  }

  /* ---------- Sticky panel ---------- */
  .sticky-wrap{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
  .panel-title{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;margin-bottom:16px}
  .panel-title .bar{width:4px;height:18px;border-radius:3px;background:var(--accent);flex:none}
  .key-list{display:flex;flex-direction:column;gap:14px}
  .key-list li{display:grid;grid-template-columns:20px minmax(0,1fr);gap:11px;font-size:14px;color:var(--muted);line-height:1.7}
  .key-list svg{width:20px;height:20px;stroke:var(--accent);fill:none;stroke-width:1.6;margin-top:3px}
  .panel-note{
    margin-top:18px;padding:14px;
    background:rgba(47,107,255,.08);border:1px solid rgba(47,107,255,.24);
    border-radius:12px;font-size:13px;color:#B9CBF2;line-height:1.7;
  }
  .meta-rows{display:flex;flex-direction:column;gap:0;margin-top:16px;border-top:1px solid var(--line)}
  .meta-rows div{
    display:flex;justify-content:space-between;gap:12px;
    padding:11px 0;border-bottom:1px solid var(--line);font-size:13px;
  }
  .meta-rows dt{color:var(--dim)}
  .meta-rows dd{margin:0;color:var(--text);font-weight:600}

  /* ---------- Support strip ---------- */
  .strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--panel)}
  .strip > div{padding:24px 22px;border-right:1px solid var(--line)}
  .strip > div:last-child{border-right:0}
  .strip h4{font-size:15px;font-weight:600;margin-bottom:8px;display:flex;align-items:center;gap:8px}
  .strip h4 i{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none;display:block}
  .strip p{font-size:14px;color:var(--muted)}

  /* ---------- CTA strip ---------- */
  .cta-strip{
    position:relative;overflow:hidden;
    display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
    padding:32px 34px;border-radius:24px;
  }
  .cta-strip::before{
    content:"";position:absolute;width:420px;height:420px;left:-80px;top:-200px;
    background:radial-gradient(circle,rgba(79,227,193,.18),transparent 62%);pointer-events:none;
  }
  .cta-strip h2{font-size:24px;position:relative;z-index:1}
  .cta-strip .actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;position:relative;z-index:1}

  /* ---------- Footer ---------- */
  .site-footer{border-top:1px solid var(--line);background:var(--panel);padding:64px 0 0;margin-top:0}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
  .footer-brand p{font-size:14px;color:var(--muted);margin-top:14px}
  .footer-contact{margin-top:16px;font-size:13px;color:var(--dim);line-height:1.9}
  .footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px}
  .footer-col li{margin-bottom:11px}
  .footer-col a{font-size:14px;color:var(--muted)}
  .footer-col a:hover{color:var(--accent)}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    margin-top:48px;padding:20px 0 28px;border-top:1px solid var(--line);
    font-size:13px;color:var(--dim);
  }
  .social-slot{display:flex;gap:10px}
  .social-slot span{width:28px;height:28px;border-radius:50%;border:1px solid var(--line);display:block}

  @media (max-width:1024px){
    .section{padding:64px 0}
    .split{grid-template-columns:1fr;gap:28px}
    .sticky-wrap{position:static}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  }
  @media (max-width:768px){
    h1{font-size:32px}
    h2{font-size:24px}
    .nav-links,.nav-cta{display:none}
    .nav-toggle{display:flex}
    .nav-shell{padding:6px 8px 6px 16px;min-height:58px}
    .page-hero{margin-top:-84px;padding:132px 0 44px;min-height:auto}
    .strip{grid-template-columns:1fr}
    .strip > div{border-right:0;border-bottom:1px solid var(--line)}
    .strip > div:last-child{border-bottom:0}
    .cta-strip{padding:26px 22px}
  }
  @media (max-width:520px){
    .container{padding:0 18px}
    .section{padding:48px 0}
    h1{font-size:27px}
    .step-item{grid-template-columns:44px minmax(0,1fr);gap:14px}
    .step-item .num{font-size:21px}
    .footer-grid{grid-template-columns:1fr}
    .btn{width:100%}
    .cta-strip .actions{width:100%}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important}
  }

/* roulang page: article */
:root{
  --bg:#04070D;
  --bg-soft:#080D18;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.075);
  --line:rgba(120,170,255,.16);
  --line-soft:rgba(120,170,255,.10);
  --primary:#2F6BFF;
  --primary-soft:rgba(47,107,255,.14);
  --accent:#4FE3C1;
  --accent-soft:rgba(79,227,193,.13);
  --amber:#FFC46B;
  --text:#E8EEFF;
  --muted:#9BAAC6;
  --dim:#66748F;
  --danger:#FF7A7A;
  --radius-lg:18px;
  --radius-md:16px;
  --radius-sm:12px;
  --pill:999px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.7);
  --shadow-hover:0 26px 52px -26px rgba(0,0,0,.85);
  --ease:200ms ease-out;
  --section:88px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--radius-md)}
a{color:inherit;text-decoration:none;transition:color var(--ease)}
button,input{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media(max-width:1024px){.container{padding:0 24px}:root{--section:64px}}
@media(max-width:520px){.container{padding:0 20px}:root{--section:48px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  padding:14px 0 10px;
  background:linear-gradient(180deg,rgba(4,7,13,.92),rgba(4,7,13,0));
}
.nav-shell{
  display:flex;align-items:center;gap:18px;
  height:64px;padding:0 12px 0 20px;
  border-radius:var(--pill);
  background:rgba(8,13,24,.72);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  transition:height var(--ease),background var(--ease);
}
.site-header.is-shrink .nav-shell{height:52px;background:rgba(8,13,24,.9)}
.brand{
  display:inline-flex;align-items:center;gap:9px;
  font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--text);white-space:nowrap;
}
.brand small{font-size:12px;font-weight:500;color:var(--accent);letter-spacing:.06em}
.brand-dot{
  width:9px;height:9px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px var(--accent-soft);
  flex:0 0 auto;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;
  padding:9px 13px;border-radius:var(--pill);
  font-size:14.5px;color:var(--muted);
}
.nav-links a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  background:var(--accent);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.nav-links a:hover{color:var(--text);background:var(--glass)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--text)}
.nav-links a.is-active::before{
  content:"";position:absolute;left:50%;top:2px;width:5px;height:5px;margin-left:-2.5px;
  border-radius:50%;background:var(--accent);
}
.nav-cta{margin-left:10px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:50%;
  background:var(--glass);border:1px solid var(--line);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle i{display:block;width:17px;height:1.8px;background:var(--text);border-radius:2px;transition:transform var(--ease)}
.nav-toggle[aria-expanded="true"] i:first-child{transform:translateY(3.4px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] i:last-child{transform:translateY(-3.4px) rotate(-45deg)}
.mobile-panel{
  display:none;margin-top:12px;padding:14px;
  border-radius:22px;background:rgba(8,13,24,.94);
  border:1px solid var(--line);backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.mobile-panel a{
  display:flex;align-items:center;height:44px;padding:0 14px;border-radius:14px;
  font-size:15px;color:var(--muted);
}
.mobile-panel a:hover,.mobile-panel a.is-active{background:var(--glass);color:var(--text)}
.mobile-panel a.btn{margin-top:10px;justify-content:center;color:#fff}
.mobile-panel.is-open{display:block}
@media(max-width:1024px){
  .nav-links a{padding:9px 10px;font-size:14px}
  .nav-cta{display:none}
}
@media(max-width:767px){
  .nav-links{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .nav-shell{padding:0 10px 0 16px}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--pill);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:filter var(--ease),transform var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
}
.btn:active{transform:scale(.985)}
.btn-primary{
  background:var(--primary);color:#fff;
  box-shadow:0 14px 34px -18px rgba(47,107,255,.9);
}
.btn-primary:hover{filter:brightness(1.06)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{background:rgba(47,107,255,.08);border-color:rgba(79,227,193,.4)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600}
.link-arrow span{transition:transform var(--ease)}
.link-arrow:hover{color:var(--accent)}
.link-arrow:hover span{transform:translateX(3px)}

/* ---------- 阅读进度 ---------- */
.read-progress{
  position:sticky;top:74px;z-index:55;height:2px;width:100%;
  background:rgba(120,170,255,.08);
}
.read-progress span{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transition:width 120ms linear;
}

/* ---------- 文章页头部 ---------- */
.article-hero{padding:40px 0 8px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--dim)}
.crumb a:hover{color:var(--accent)}
.crumb-cur{color:var(--muted);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--pill);
  font-size:12px;letter-spacing:.06em;
  background:var(--accent-soft);color:var(--accent);border:1px solid rgba(79,227,193,.22);
}
.badge-blue{background:var(--primary-soft);color:#9CBBFF;border-color:rgba(47,107,255,.28)}
.article-title{
  margin:18px 0 0;font-size:40px;line-height:1.22;font-weight:700;letter-spacing:.01em;
  max-width:900px;
}
.article-title::selection{background:rgba(79,227,193,.25)}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:18px;
  font-size:13px;color:var(--dim);
}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:var(--dim)}
.meta-row time{color:var(--amber)}

.cover-wrap{margin:32px 0 0;border-radius:20px;overflow:hidden;border:1px solid var(--line);background:var(--bg-soft)}
.cover-wrap img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0}
.cover-cap{font-size:13px;color:var(--dim);margin-top:10px}

/* ---------- 布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr);gap:36px;
  padding:var(--section) 0;
}
@media(min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,820px) 280px;gap:48px;justify-content:center}
}
.article-main{min-width:0}
.article-panel{
  border-radius:var(--radius-lg);border:1px solid var(--line);
  background:var(--glass);box-shadow:var(--shadow);
  padding:32px 34px;
}
@media(max-width:767px){.article-panel{padding:22px 18px}}

/* ---------- 正文排版 ---------- */
.article-body{font-size:17px;line-height:1.9;color:var(--text);max-width:820px}
.article-body > * + *{margin-top:1.15em}
.article-body p{margin:0}
.article-body h2{
  position:relative;margin:1.8em 0 .7em;padding-left:16px;
  font-size:28px;line-height:1.32;font-weight:700;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;width:4px;height:18px;border-radius:2px;background:var(--primary);
}
.article-body h3{margin:1.5em 0 .5em;font-size:20px;font-weight:600;color:var(--primary)}
.article-body h4{margin:1.3em 0 .4em;font-size:17px;font-weight:600;color:var(--text)}
.article-body ul,.article-body ol{margin:1.15em 0;padding-left:1.4em}
.article-body li{margin:.45em 0}
.article-body ul li::marker{color:var(--accent)}
.article-body ol li::marker{color:var(--accent);font-weight:600}
.article-body a{color:var(--primary);border-bottom:1px dashed rgba(47,107,255,.6)}
.article-body a:hover{color:var(--accent);border-bottom-color:rgba(79,227,193,.7)}
.article-body blockquote{
  margin:1.5em 0;padding:16px 20px;border-left:3px solid var(--primary);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  background:var(--glass);color:var(--muted);
}
.article-body img{margin:1.6em auto;border-radius:var(--radius-md);border:1px solid var(--line)}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--dim);text-align:center;margin-top:8px}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;
}
.article-body th,.article-body td{
  padding:12px 14px;text-align:left;border-bottom:1px solid var(--line-soft);
}
.article-body th{background:rgba(120,170,255,.07);font-weight:600;color:var(--text)}
.article-body tr:nth-child(even) td{background:rgba(255,255,255,.02)}
.article-body code{
  font-family:var(--font-num);font-size:14px;background:rgba(120,170,255,.1);
  padding:2px 6px;border-radius:6px;color:var(--accent);
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}

/* ---------- 文章底部 ---------- */
.article-foot{margin-top:36px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:var(--pill);
  font-size:12.5px;color:var(--muted);background:var(--glass);border:1px solid var(--line);
}
.empty-state{
  text-align:center;padding:64px 20px;border-radius:var(--radius-lg);
  border:1px dashed var(--line);background:var(--glass);
}
.empty-state svg{width:44px;height:44px;stroke:var(--dim);fill:none;stroke-width:1.6;margin:0 auto 16px}
.empty-state h3{margin:0 0 8px;font-size:20px;font-weight:600}
.empty-state p{margin:0 0 20px;color:var(--muted);font-size:15px}

/* ---------- 侧栏 ---------- */
.side-card{
  border-radius:var(--radius-lg);border:1px solid var(--line);
  background:var(--glass);box-shadow:var(--shadow);padding:22px;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.side-card:hover{transform:translateY(-2px);border-color:rgba(120,170,255,.32);box-shadow:var(--shadow-hover)}
.side-card h3{margin:0 0 14px;font-size:17px;font-weight:600}
.side-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 14px;border-radius:14px;font-size:14.5px;color:var(--muted);
  background:rgba(255,255,255,.025);border:1px solid transparent;
}
.side-list a:hover{color:var(--text);background:rgba(47,107,255,.1);border-color:var(--line)}
.side-list a i{font-style:normal;color:var(--dim);font-size:13px}
.rec-item{padding:14px 0;border-bottom:1px solid var(--line-soft)}
.rec-item:last-child{border-bottom:0;padding-bottom:0}
.rec-item a{font-size:14.5px;line-height:1.6;color:var(--text);display:block}
.rec-item a:hover{color:var(--accent)}
.rec-item time{display:block;margin-top:6px;font-size:12.5px;color:var(--amber)}
.article-side{display:grid;gap:22px;align-content:start}
@media(min-width:1280px){.article-side{position:sticky;top:100px}}
@media(max-width:1279px){
  .article-side{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:767px){.article-side{grid-template-columns:minmax(0,1fr)}}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 var(--section)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.sec-head h2{margin:0;font-size:28px;font-weight:700}
.sec-sub{margin:8px 0 0;color:var(--muted);font-size:15px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
@media(max-width:1024px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.related-grid{grid-template-columns:minmax(0,1fr)}}
.card{
  display:flex;flex-direction:column;gap:12px;
  border-radius:var(--radius-lg);border:1px solid var(--line);
  background:var(--glass);box-shadow:var(--shadow);padding:16px;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:rgba(120,170,255,.32);box-shadow:var(--shadow-hover)}
.card-thumb{border-radius:var(--radius-md);overflow:hidden;aspect-ratio:16/9;background:linear-gradient(135deg,rgba(47,107,255,.22),rgba(79,227,193,.14))}
.card-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0}
.card h3{margin:0;font-size:17px;line-height:1.55;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card p{margin:0;font-size:14px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card time{font-size:12.5px;color:var(--amber)}
.card .card-link{margin-top:auto;padding-top:6px;display:flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600}
.card:hover .card-link{color:var(--accent)}
.card .card-link span{transition:transform var(--ease)}
.card:hover .card-link span{transform:translateX(3px)}

/* ---------- CTA ---------- */
.cta-band{padding:0 0 var(--section)}
.cta-card{
  position:relative;overflow:hidden;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  padding:36px 38px;border-radius:24px;
  border:1px solid var(--line);
  background:radial-gradient(600px 220px at 12% 0%,rgba(47,107,255,.22),transparent 70%),var(--glass);
  box-shadow:var(--shadow);
}
.cta-card h2{margin:0;font-size:28px;font-weight:700}
.cta-card p{margin:8px 0 0;color:var(--muted);font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px}
.cta-form{display:flex;gap:10px;width:100%;max-width:420px}
.cta-form input{
  flex:1;height:48px;padding:0 16px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text);
}
.cta-form input::placeholder{color:var(--dim)}
.cta-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px var(--accent)}
@media(max-width:767px){
  .cta-card{padding:26px 20px}
  .cta-form{flex-direction:column;max-width:100%}
  .cta-form .btn{width:100%}
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:70;
  width:48px;height:48px;border-radius:50%;
  display:none;align-items:center;justify-content:center;
  background:rgba(8,13,24,.86);border:1px solid var(--line);color:var(--text);
  backdrop-filter:blur(10px);box-shadow:var(--shadow);cursor:pointer;
  transition:transform var(--ease),border-color var(--ease);
}
.to-top:hover{transform:translateY(-2px);border-color:rgba(79,227,193,.5)}
.to-top.is-show{display:flex}
@media(max-width:520px){.to-top{right:16px;bottom:18px;width:44px;height:44px}}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-soft);
  padding:64px 0 28px;
  margin-top:20px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
@media(max-width:1024px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px}}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr}}
.footer-brand .brand{font-size:16px}
.footer-brand p{margin:14px 0 16px;font-size:14px;color:var(--muted)}
.footer-contact{font-size:13px;color:var(--dim);line-height:1.9}
.footer-col h4{margin:0 0 16px;font-size:14px;font-weight:600;color:var(--text)}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--muted)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--dim);
}
.social-slot{display:flex;gap:10px}
.social-slot span{width:28px;height:28px;border-radius:50%;border:1px solid var(--line);background:var(--glass)}

@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .card:hover,.side-card:hover,.to-top:hover{transform:none}
}

/* roulang page: category2 */
:root{
  --bg:#04070D;
  --bg-2:#080D18;
  --glass:rgba(255,255,255,.045);
  --line:rgba(120,170,255,.16);
  --line-strong:rgba(120,170,255,.3);
  --primary:#2F6BFF;
  --mint:#4FE3C1;
  --amber:#FFC46B;
  --danger:#FF7A7A;
  --text:#E8EEFF;
  --muted:#9BAAC6;
  --faint:#66748F;
  --r-card:18px;
  --r-btn:999px;
  --r-img:16px;
  --r-input:12px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.7);
  --shadow-hi:0 26px 54px -26px rgba(0,0,0,.85);
  --sp-section:88px;
  --ease:.2s ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none;transition:color var(--ease)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:6px}
::selection{background:rgba(47,107,255,.35);color:#fff}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
.section{padding:var(--sp-section) 0}
.section-tight{padding:56px 0}
.bg-panel{
  background:var(--bg-2);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.grid-lines{
  position:absolute;inset:0;pointer-events:none;opacity:.055;
  background-image:linear-gradient(rgba(120,170,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(120,170,255,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
.glow-soft{
  position:absolute;pointer-events:none;
  width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,107,255,.28),transparent 68%);
  filter:blur(10px);
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  padding:14px 0;
  transition:padding var(--ease);
}
.site-header.is-scrolled{padding:8px 0}
.nav-shell{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  height:64px;padding:0 12px 0 18px;
  border-radius:var(--r-btn);
  background:rgba(8,13,24,.72);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  transition:height var(--ease),background var(--ease);
}
.site-header.is-scrolled .nav-shell{height:52px;background:rgba(8,13,24,.92)}
.brand{
  display:inline-flex;align-items:center;gap:9px;
  font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--text);
  white-space:nowrap;
}
.brand small{
  font-size:11px;font-weight:600;color:var(--mint);
  background:rgba(79,227,193,.12);
  padding:2px 8px;border-radius:var(--r-btn);letter-spacing:.06em;
}
.brand-dot{
  width:9px;height:9px;border-radius:50%;
  background:linear-gradient(140deg,var(--primary),var(--mint));
  box-shadow:0 0 0 4px rgba(47,107,255,.16);
}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{
  position:relative;
  font-size:14.5px;color:var(--muted);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--mint);border-radius:2px;
  transform:scaleX(0);transform-origin:center;
  transition:transform var(--ease);
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--text);font-weight:600}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-links a.is-active::before{
  content:"";position:absolute;left:-12px;top:50%;width:5px;height:5px;
  margin-top:-2.5px;border-radius:50%;background:var(--mint);
}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);align-items:center;justify-content:center;
  flex-direction:column;gap:5px;
}
.nav-toggle i{display:block;width:16px;height:1.6px;background:var(--text);border-radius:2px;transition:transform var(--ease)}
.nav-toggle[aria-expanded="true"] i:first-child{transform:translateY(3.3px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] i:last-child{transform:translateY(-3.3px) rotate(-45deg)}
.mobile-panel{
  display:none;
  margin-top:10px;
  border-radius:22px;
  background:rgba(8,13,24,.96);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  padding:14px;
  box-shadow:var(--shadow);
}
.mobile-panel.is-open{display:block}
.mobile-panel a{
  display:flex;align-items:center;
  height:44px;padding:0 14px;border-radius:14px;
  font-size:15px;color:var(--muted);
}
.mobile-panel a:hover,.mobile-panel a.is-active{background:var(--glass);color:var(--text)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:transform var(--ease),background var(--ease),border-color var(--ease),color var(--ease),box-shadow var(--ease),filter var(--ease);
  white-space:nowrap;
}
.btn:active{transform:scale(.985)}
.btn-primary{
  background:var(--primary);color:#fff;
  box-shadow:0 12px 30px -14px rgba(47,107,255,.9);
}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 16px 36px -14px rgba(47,107,255,1)}
.btn-ghost{
  border-color:var(--line-strong);color:var(--text);background:transparent;
}
.btn-ghost:hover{background:rgba(47,107,255,.08);border-color:var(--primary)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%;margin-top:8px}
.btn-link{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14.5px;font-weight:600;color:var(--primary);
}
.btn-link span{transition:transform var(--ease)}
.btn-link:hover{color:var(--mint)}
.btn-link:hover span{transform:translateX(3px)}

/* ============ 标签行 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-btn);
  font-size:12px;font-weight:600;letter-spacing:.06em;
  background:rgba(47,107,255,.12);color:#8FB2FF;
}
.badge-mint{background:rgba(79,227,193,.12);color:var(--mint)}
.badge-amber{background:rgba(255,196,107,.13);color:var(--amber)}
.anchor-bar{
  display:flex;flex-wrap:wrap;gap:10px;
  padding:10px;border-radius:var(--r-btn);
  background:var(--glass);border:1px solid var(--line);
  width:fit-content;max-width:100%;
}
.anchor-bar a{
  display:inline-flex;align-items:center;
  height:38px;padding:0 18px;border-radius:var(--r-btn);
  font-size:14px;color:var(--muted);border:1px solid transparent;
}
.anchor-bar a:hover{color:var(--text);background:rgba(47,107,255,.1);border-color:var(--line)}

/* ============ 页首文字区 ============ */
.page-head{position:relative;overflow:hidden;padding:64px 0 24px}
.page-head .glow-soft{top:-260px;right:-120px}
.page-head-inner{position:relative;z-index:2;max-width:820px}
.crumb{display:flex;gap:8px;align-items:center;font-size:13px;color:var(--faint);margin-bottom:18px}
.crumb a:hover{color:var(--mint)}
.page-title{
  font-size:40px;line-height:1.2;font-weight:700;letter-spacing:-.01em;
  margin:16px 0 14px;
}
.page-title em{font-style:normal;color:var(--mint)}
.page-lead{font-size:16.5px;color:var(--muted);max-width:680px}

/* ============ 区块标题 ============ */
.sec-head{margin-bottom:40px;max-width:720px}
.sec-title{
  position:relative;font-size:28px;line-height:1.3;font-weight:700;
  padding-left:16px;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;
  border-radius:4px;background:linear-gradient(180deg,var(--primary),var(--mint));
}
.sec-desc{margin-top:12px;color:var(--muted);font-size:15.5px}

/* ============ 时间轴 ============ */
.timeline{position:relative;padding:8px 0}
.timeline::before{
  content:"";position:absolute;left:50%;top:0;bottom:0;width:2px;
  transform:translateX(-50%);
  background:linear-gradient(180deg,rgba(47,107,255,0),var(--primary) 10%,var(--mint) 90%,rgba(79,227,193,0));
}
.tl-item{
  display:grid;grid-template-columns:1fr 84px 1fr;align-items:center;
  margin-bottom:34px;
}
.tl-item:last-child{margin-bottom:0}
.tl-node{
  grid-column:2;display:flex;align-items:center;justify-content:center;
  position:relative;
}
.tl-node span{
  width:14px;height:14px;border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 0 6px rgba(79,227,193,.14),0 0 22px rgba(79,227,193,.55);
}
.tl-card{
  grid-column:1;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--shadow);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.tl-item:nth-child(even) .tl-card{grid-column:3}
.tl-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-hi)}
.tl-step{
  font-size:13px;font-weight:700;color:var(--mint);letter-spacing:.06em;
}
.tl-title{font-size:20px;font-weight:600;margin:8px 0 8px}
.tl-text{font-size:15px;color:var(--muted)}
.tl-thumb{
  margin-top:16px;aspect-ratio:16/9;border-radius:var(--r-img);
  overflow:hidden;background:linear-gradient(135deg,rgba(47,107,255,.22),rgba(79,227,193,.14));
  border:1px solid var(--line);
}
.tl-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0}

/* ============ 清单条 ============ */
.rows{border-top:1px solid var(--line)}
.row-item{
  display:grid;grid-template-columns:56px 1fr auto;gap:20px;align-items:center;
  padding:22px 4px;border-bottom:1px solid var(--line);
  transition:background var(--ease);
}
.row-item:hover{background:rgba(255,255,255,.02)}
.row-num{font-size:15px;font-weight:700;color:var(--mint)}
.row-main h3{font-size:17px;font-weight:600;margin-bottom:4px}
.row-main p{font-size:14.5px;color:var(--muted)}
.row-flag{font-size:13px;color:var(--faint)}
.row-flag.tone-amber{color:var(--amber)}

/* ============ 数据带 ============ */
.data-band{position:relative;overflow:hidden;background:var(--bg)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;z-index:2}
.stat{padding:8px 0}
.stat-num{
  font-size:44px;line-height:1;font-weight:700;color:var(--mint);
  font-family:Inter,"PingFang SC",system-ui,sans-serif;
  text-shadow:0 0 26px rgba(79,227,193,.35);
}
.stat-num small{font-size:16px;font-weight:600;margin-left:4px;color:var(--muted);text-shadow:none}
.stat-label{margin-top:12px;font-size:14px;color:var(--muted)}

/* ============ 图文分栏 ============ */
.split{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:center}
.split-media{
  aspect-ratio:4/3;border-radius:20px;overflow:hidden;border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(47,107,255,.2),rgba(79,227,193,.12));
}
.split-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.tip-list li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);
}
.tip-list li:last-child{border-bottom:0}
.tip-icon{
  flex:0 0 22px;width:22px;height:22px;margin-top:4px;
  border-radius:50%;border:1.6px solid var(--mint);position:relative;
}
.tip-icon::after{
  content:"";position:absolute;left:6px;top:6px;width:6px;height:6px;border-radius:50%;background:var(--mint);
}
.tip-list h3{font-size:16.5px;font-weight:600;margin-bottom:4px}
.tip-list p{font-size:14.5px;color:var(--muted)}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:26px;
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  box-shadow:var(--shadow);
  padding:48px;
}
.cta-band .glow-soft{top:-220px;left:-120px;opacity:.85}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between}
.cta-title{font-size:26px;font-weight:700;margin-bottom:10px}
.cta-text{font-size:15px;color:var(--muted);max-width:520px}
.cta-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.field-row{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap}
.field-row input{
  height:48px;min-width:260px;flex:1 1 260px;
  padding:0 16px;border-radius:var(--r-input);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  color:var(--text);font-size:15px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field-row input::placeholder{color:var(--faint)}
.field-row input:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 2px rgba(79,227,193,.5);
}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-2);
  padding:64px 0 28px;
  margin-top:88px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--muted);max-width:16em}
.footer-contact{margin-top:16px;font-size:13.5px;color:var(--faint);line-height:1.9}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{font-size:14px;color:var(--muted)}
.footer-col ul a:hover{color:var(--mint)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  font-size:13px;color:var(--faint);
}
.social-slot{display:flex;gap:10px}
.social-slot span{width:30px;height:30px;border-radius:50%;border:1px solid var(--line);display:block}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--sp-section:64px}
  .container{padding:0 24px}
  .nav-links{gap:18px}
  .nav-links a{font-size:14px}
  .split{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .page-title{font-size:34px}
}
@media (max-width:768px){
  :root{--sp-section:48px}
  .container{padding:0 20px}
  .nav-links,.nav-shell .nav-cta{display:none}
  .nav-toggle{display:flex}
  .nav-shell{height:58px;padding:0 8px 0 14px}
  .timeline::before{left:9px;transform:none}
  .tl-item{grid-template-columns:20px 1fr;gap:16px;margin-bottom:26px}
  .tl-node{grid-column:1;justify-content:flex-start}
  .tl-node span{width:12px;height:12px}
  .tl-card,.tl-item:nth-child(even) .tl-card{grid-column:2}
  .tl-title{font-size:18px}
  .stat-grid{grid-template-columns:1fr 1fr;gap:28px 20px}
  .stat-num{font-size:36px}
  .page-head{padding:40px 0 12px}
  .page-title{font-size:28px}
  .sec-title{font-size:23px}
  .cta-band{padding:32px 22px}
  .cta-title{font-size:21px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .row-item{grid-template-columns:44px 1fr;gap:14px}
  .row-flag{grid-column:2;font-size:12.5px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .anchor-bar{width:100%;justify-content:flex-start}
}
@media (max-width:520px){
  .page-title{font-size:25px;line-height:1.28}
  .page-lead{font-size:15px}
  .stat-num{font-size:32px}
  .btn{height:46px;padding:0 20px;font-size:14.5px}
  .field-row input{min-width:100%}
  .anchor-bar a{height:36px;padding:0 14px;font-size:13.5px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .tl-card:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --bg:#04070D;
  --bg-soft:#080D18;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.075);
  --line:rgba(120,170,255,.16);
  --line-strong:rgba(120,170,255,.32);
  --primary:#2F6BFF;
  --primary-soft:rgba(47,107,255,.14);
  --teal:#4FE3C1;
  --teal-soft:rgba(79,227,193,.12);
  --amber:#FFC46B;
  --amber-soft:rgba(255,196,107,.12);
  --danger:#FF7A7A;
  --text:#E8EEFF;
  --muted:#9BAAC6;
  --dim:#66748F;
  --r-card:18px;
  --r-img:16px;
  --r-pill:999px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.7);
  --shadow-hover:0 24px 50px -22px rgba(0,0,0,.85);
  --glow:0 0 0 1px rgba(47,107,255,.42), 0 14px 34px -14px rgba(47,107,255,.7);
  --sp:48px;
}
@media(min-width:768px){:root{--sp:64px}}
@media(min-width:1024px){:root{--sp:88px}}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",Inter,system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
html img{max-width:100%;display:block}
html a{color:inherit;text-decoration:none}
html button,html input{font:inherit;color:inherit;margin:0}
h1,h2,h3,h4,p,ul,ol,li,figure{margin:0;padding:0}
ul,ol{list-style:none}
::selection{background:rgba(47,107,255,.4);color:#fff}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1200px){.container{padding:0 32px}}

/* ---------- 通用文本层级 ---------- */
.h1{font-size:32px;line-height:1.24;font-weight:700;letter-spacing:0}
.h2{font-size:24px;line-height:1.3;font-weight:700}
.h3{font-size:19px;line-height:1.4;font-weight:600}
@media(min-width:768px){
  .h1{font-size:40px}
  .h2{font-size:28px}
  .h3{font-size:20px}
}
.lead{color:var(--muted);font-size:16px;line-height:1.8}
.small{font-size:13px;line-height:1.6;color:var(--dim)}
.num{font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:14px 0;transition:padding .25s ease}
.site-header.is-scrolled{padding:8px 0}
.nav-shell{
  display:flex;align-items:center;gap:16px;
  height:64px;padding:0 16px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:rgba(8,13,24,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 18px 40px -30px rgba(0,0,0,.9);
  transition:height .25s ease,background .25s ease,border-color .2s ease;
}
.site-header.is-scrolled .nav-shell{height:52px;background:rgba(8,13,24,.92);border-color:var(--line-strong)}
.brand{display:inline-flex;align-items:center;gap:8px;font-size:16px;font-weight:700;white-space:nowrap}
.brand small{
  font-size:11px;font-weight:500;color:var(--teal);
  background:var(--teal-soft);border-radius:var(--r-pill);
  padding:2px 8px;letter-spacing:.06em;
}
.brand-dot{
  width:9px;height:9px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--teal));
  box-shadow:0 0 10px rgba(79,227,193,.6);
  flex:0 0 auto;
}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:8px 12px;border-radius:var(--r-pill);
  font-size:14px;color:var(--muted);
  transition:color .2s ease,background .2s ease;
}
.nav-links a::before{
  content:"";width:0;height:6px;border-radius:50%;
  background:var(--teal);transition:width .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;border-radius:2px;
  background:var(--teal);transform:scaleX(0);transform-origin:center;
  transition:transform .2s ease;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:#fff;background:rgba(255,255,255,.05)}
.nav-links a.is-active::before{width:6px}
.nav-links a.is-active::after{transform:scaleX(1);opacity:.85}
.nav-cta{margin-left:8px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  cursor:pointer;align-items:center;justify-content:center;
  flex-direction:column;gap:5px;padding:0;
}
.nav-toggle i{display:block;width:16px;height:1.6px;background:var(--text);border-radius:2px;transition:transform .2s ease}
.nav-toggle[aria-expanded="true"] i:first-child{transform:translateY(3.3px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] i:last-child{transform:translateY(-3.3px) rotate(-45deg)}
.mobile-panel{
  position:absolute;top:calc(100% + 10px);left:20px;right:20px;
  display:flex;flex-direction:column;gap:2px;
  padding:12px;border:1px solid var(--line);border-radius:22px;
  background:rgba(8,13,24,.96);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow);
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
}
.mobile-panel.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-panel a{
  display:flex;align-items:center;min-height:44px;padding:0 14px;
  border-radius:14px;font-size:15px;color:var(--muted);
}
.mobile-panel a:hover,.mobile-panel a.is-active{color:#fff;background:rgba(255,255,255,.05)}
.mobile-panel .btn{margin-top:8px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease,
             transform .15s ease,box-shadow .2s ease,filter .2s ease;
}
.btn:active{transform:scale(.985)}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--glow)}
.btn-primary:hover{filter:brightness(1.06)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{background:rgba(47,107,255,.1);border-color:rgba(47,107,255,.5)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--teal);
}
.btn-text span{transition:transform .2s ease}
.btn-text:hover span{transform:translateX(3px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.06em;
}
.badge-primary{background:var(--primary-soft);color:#9DBBFF}
.badge-teal{background:var(--teal-soft);color:var(--teal)}
.badge-amber{background:var(--amber-soft);color:var(--amber)}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sp) 0}
.section-tight{padding:calc(var(--sp) * .68) 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:32px}
.section-head .h2{display:flex;align-items:center;gap:12px}
.section-head .h2::before{
  content:"";width:4px;height:20px;border-radius:3px;
  background:var(--primary);flex:0 0 auto;
}
.divider{height:1px;background:var(--line);border:0}

/* ---------- 分类页首屏 ---------- */
.cat-hero{position:relative;isolation:isolate;overflow:hidden;padding:56px 0 48px;border-bottom:1px solid var(--line)}
@media(min-width:768px){.cat-hero{padding:76px 0 64px}}
.cat-hero-bg{
  position:absolute;inset:0;z-index:-2;
  background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  opacity:.24;
}
.cat-hero-mask{
  position:absolute;inset:0;z-index:-2;
  background:linear-gradient(180deg,rgba(4,7,13,.78) 0%,rgba(4,7,13,.94) 62%,var(--bg) 100%);
}
.cat-hero-grid{
  position:absolute;inset:0;z-index:-1;
  background-image:linear-gradient(rgba(120,170,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(120,170,255,.06) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(70% 70% at 30% 20%,#000 0%,transparent 78%);
  mask-image:radial-gradient(70% 70% at 30% 20%,#000 0%,transparent 78%);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--dim);margin-bottom:20px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--teal)}
.breadcrumb i{width:4px;height:4px;border-radius:50%;background:var(--dim);display:inline-block}
.cat-hero .h1{max-width:19em;margin:16px 0 14px}
.cat-hero .lead{max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}

/* ---------- 2×2 玻璃卡网格 ---------- */
.verify-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.verify-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.glass-card{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--glass);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
  padding:24px;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.glass-card:hover{
  transform:translateY(-2px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-hover),inset 0 1px 0 rgba(255,255,255,.08);
  background:var(--glass-strong);
}
.card-icon{
  width:46px;height:46px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);border:1px solid rgba(47,107,255,.28);
  color:var(--teal);margin-bottom:18px;
}
.card-icon svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.glass-card .h3{margin-bottom:10px}
.glass-card > p{color:var(--muted);font-size:15px;margin-bottom:16px}
.check-list li{
  position:relative;padding-left:24px;font-size:14px;
  color:var(--muted);line-height:1.7;margin-bottom:8px;
}
.check-list li:last-child{margin-bottom:0}
.check-list li::before{
  content:"";position:absolute;left:2px;top:8px;
  width:8px;height:8px;border-radius:2px;
  border:1.6px solid var(--teal);border-top:0;border-right:0;
  transform:rotate(-45deg);
  opacity:.9;
}
.card-index{
  position:absolute;top:20px;right:22px;
  font-size:13px;font-weight:600;color:var(--dim);letter-spacing:.06em;
}

/* ---------- 琥珀提示带 ---------- */
.notice-band{
  display:flex;gap:16px;align-items:flex-start;
  border:1px solid var(--line);
  border-left:3px solid var(--amber);
  border-radius:14px;
  background:var(--amber-soft);
  padding:18px 22px;
  margin-top:28px;
}
.notice-band .nb-icon{
  flex:0 0 auto;width:22px;height:22px;color:var(--amber);margin-top:2px;
}
.notice-band .nb-icon svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.notice-band strong{color:var(--amber);font-size:15px;display:block;margin-bottom:4px}
.notice-band p{color:var(--muted);font-size:14px;line-height:1.8}

/* ---------- 图文能力区 ---------- */
.feature-split{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
@media(min-width:1024px){.feature-split{grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:48px}}
.figure-frame{
  border:1px solid var(--line);
  border-radius:var(--r-img);
  overflow:hidden;
  background:linear-gradient(135deg,rgba(47,107,255,.18),rgba(79,227,193,.1));
  aspect-ratio:16/10;
  box-shadow:var(--shadow);
}
.figure-frame img{width:100%;height:100%;object-fit:cover}
.figure-cap{margin-top:12px;font-size:13px;color:var(--dim)}
.feature-body .h2{margin-bottom:16px}
.feature-body p{color:var(--muted);margin-bottom:18px}
.feature-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-top:1px solid var(--line);
  font-size:15px;color:var(--text);
}
.feature-list li:last-child{border-bottom:1px solid var(--line)}
.feature-list .dot{
  flex:0 0 auto;width:8px;height:8px;border-radius:50%;
  background:var(--teal);margin-top:9px;box-shadow:0 0 8px rgba(79,227,193,.7);
}
.feature-list span{color:var(--muted);display:block;font-size:13.5px;margin-top:2px}

/* ---------- 数据带 ---------- */
.stats-band{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--bg-soft);
}
.stats-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:1px;background:var(--line);
}
@media(min-width:1024px){.stats-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat{
  background:var(--bg-soft);
  padding:28px 22px;
  display:flex;flex-direction:column;justify-content:flex-end;gap:6px;
}
.stat b{
  font-family:Inter,system-ui,sans-serif;
  font-size:34px;line-height:1.1;font-weight:700;color:var(--teal);
  font-variant-numeric:tabular-nums;
}
@media(min-width:768px){.stat b{font-size:44px}}
.stat span{font-size:13.5px;color:var(--muted)}

/* ---------- 快速核对清单 ---------- */
.check-panel{
  display:grid;grid-template-columns:1fr;gap:14px;
}
@media(min-width:768px){.check-panel{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}}
.check-item{
  border:1px solid var(--line);border-radius:var(--r-card);
  background:rgba(255,255,255,.03);
  padding:20px 22px;
  transition:border-color .2s ease,transform .2s ease,background .2s ease;
}
.check-item:hover{transform:translateY(-2px);border-color:var(--line-strong);background:var(--glass-strong)}
.check-item h4{font-size:15px;font-weight:600;margin-bottom:8px}
.check-item p{font-size:14px;color:var(--muted)}
.check-item .idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:28px;height:28px;border-radius:10px;margin-bottom:14px;
  background:var(--teal-soft);color:var(--teal);
  font-size:12px;font-weight:700;font-family:Inter,system-ui,sans-serif;
}

/* ---------- 结尾 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid var(--line);
  border-radius:22px;
  background:var(--glass);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
  padding:32px 24px;
}
@media(min-width:768px){.cta-band{padding:44px 40px}}
.cta-band::before{
  content:"";position:absolute;inset:-40% -20% auto -20%;height:280px;z-index:0;
  background:radial-gradient(50% 100% at 50% 100%,rgba(47,107,255,.28),transparent 72%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:24px;align-items:center}
@media(min-width:1024px){.cta-inner{grid-template-columns:minmax(0,6fr) minmax(0,5fr)}}
.cta-inner .h2{margin-bottom:10px}
.cta-inner p{color:var(--muted);font-size:15px}
.cta-form{display:flex;flex-direction:column;gap:12px}
@media(min-width:640px){.cta-form{flex-direction:row;align-items:center}}
.field{
  flex:1 1 auto;height:48px;padding:0 16px;
  border:1px solid var(--line);border-radius:12px;
  background:rgba(255,255,255,.04);color:var(--text);
  font-size:14.5px;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field::placeholder{color:var(--dim)}
.field:hover{background:rgba(255,255,255,.06)}
.field:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,227,193,.28);outline:none}
.field.is-error{border-color:var(--danger)}
.form-note{font-size:12.5px;color:var(--dim);margin-top:10px;min-height:18px}
.form-note.is-error{color:var(--danger)}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:20px;bottom:24px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);background:rgba(8,13,24,.86);
  color:var(--text);cursor:pointer;
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease,border-color .2s ease;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--teal);color:var(--teal)}
.to-top svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-soft);padding:56px 0 26px;margin-top:var(--sp)}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}}
@media(min-width:1024px){.footer-grid{grid-template-columns:minmax(0,4fr) repeat(3,minmax(0,2.4fr));gap:40px}}
.footer-brand .brand{font-size:17px}
.footer-brand p{color:var(--muted);font-size:14px;margin:14px 0 16px;max-width:22em}
.footer-contact{font-size:13.5px;color:var(--dim);line-height:1.9}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--muted);transition:color .2s ease}
.footer-col ul a:hover{color:var(--teal)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:var(--dim);
}
.social-slot{display:flex;gap:10px}
.social-slot span{
  width:30px;height:30px;border-radius:50%;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
}

/* ---------- 动效偏好 ---------- */
@media(prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
  .glass-card:hover,.check-item:hover{transform:none}
}

/* ---------- 移动端导航 ---------- */
@media(max-width:767px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .nav-shell{justify-content:space-between}
  .hero-actions .btn{width:100%}
}
@media(min-width:768px){
  .nav-toggle{display:none}
  .mobile-panel{display:none}
}

/* roulang page: category4 */
:root{
  --bg:#04070D;
  --bg-soft:#080D18;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.028);
  --line:rgba(120,170,255,.16);
  --line-strong:rgba(120,170,255,.34);
  --primary:#2F6BFF;
  --primary-soft:rgba(47,107,255,.12);
  --accent:#4FE3C1;
  --accent-soft:rgba(79,227,193,.12);
  --amber:#FFC46B;
  --text:#E8EEFF;
  --text-2:#9BAAC6;
  --text-3:#66748F;
  --danger:#FF7A7A;
  --radius-card:18px;
  --radius-pill:999px;
  --radius-img:16px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.7);
  --section-y:88px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
button,input{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;}
p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%;}
.section{padding:var(--section-y) 0;}
.section-tight{padding:56px 0;}
.section-alt{background:var(--bg-soft);border-top:1px solid rgba(120,170,255,.08);border-bottom:1px solid rgba(120,170,255,.08);}

/* ============ 头部导航 ============ */
.site-header{position:sticky;top:0;z-index:60;padding:12px 0 0;pointer-events:none;}
.nav-shell{
  pointer-events:auto;
  display:flex;align-items:center;gap:14px;
  height:64px;padding:0 10px 0 20px;
  background:rgba(8,13,24,.72);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 18px 40px -28px rgba(0,0,0,.9);
  transition:height .25s var(--ease),background .25s var(--ease);
}
.is-scrolled .nav-shell{height:52px;background:rgba(8,13,24,.92);}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:16px;letter-spacing:.01em;white-space:nowrap;}
.brand-dot{width:9px;height:9px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px rgba(47,107,255,.16);flex:0 0 9px;}
.brand small{font-size:11px;font-weight:600;color:var(--accent);border:1px solid rgba(79,227,193,.34);background:var(--accent-soft);border-radius:var(--radius-pill);padding:2px 8px;letter-spacing:.06em;}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-links a{
  position:relative;display:block;padding:8px 14px;border-radius:var(--radius-pill);
  font-size:14px;color:var(--text-2);transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:3px;width:0;height:2px;border-radius:2px;
  background:var(--accent);transform:translateX(-50%);transition:width .2s var(--ease);
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.045);}
.nav-links a:hover::after{width:18px;}
.nav-links a.is-active{color:#fff;font-weight:600;background:var(--primary-soft);}
.nav-links a.is-active::before{
  content:"";position:absolute;left:5px;top:50%;transform:translateY(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--accent);
}
.nav-links a.is-active::after{width:0;}
.nav-cta{margin-left:6px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  margin-left:auto;align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;
}
.nav-toggle i{display:block;width:17px;height:1.6px;background:var(--text);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease);}
.nav-toggle[aria-expanded="true"] i:first-child{transform:translateY(3.3px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] i:last-child{transform:translateY(-3.3px) rotate(-45deg);}
.mobile-panel{
  display:none;position:absolute;left:32px;right:32px;top:calc(100% + 10px);
  background:rgba(8,13,24,.96);border:1px solid var(--line);border-radius:22px;
  padding:12px;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow);flex-direction:column;pointer-events:auto;
}
.mobile-panel.is-open{display:flex;}
.mobile-panel a{
  display:flex;align-items:center;min-height:44px;padding:0 14px;border-radius:14px;
  font-size:15px;color:var(--text-2);
}
.mobile-panel a.is-active{color:#fff;background:var(--primary-soft);font-weight:600;}
.mobile-panel .btn{margin-top:10px;}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease),transform .12s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 12px 34px -14px rgba(47,107,255,.95);}
.btn-primary:hover{filter:brightness(1.06);}
.btn-primary:active{transform:scale(.985);}
.btn-ghost{border-color:var(--line-strong);color:var(--text);background:transparent;}
.btn-ghost:hover{background:rgba(47,107,255,.08);border-color:rgba(120,170,255,.5);}
.btn-ghost:active{transform:scale(.985);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:14px;}
.link-arrow span{transition:transform .2s var(--ease);}
.link-arrow:hover{color:var(--accent);}
.link-arrow:hover span{transform:translateX(3px);}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  padding:4px 12px;border-radius:var(--radius-pill);
}
.badge-accent{background:var(--accent-soft);color:var(--accent);}
.badge-primary{background:var(--primary-soft);color:#8FB4FF;}
.badge-amber{background:rgba(255,196,107,.12);color:var(--amber);}

/* ============ 标题区 ============ */
.page-head{
  position:relative;
  padding:72px 0 64px;
  border-bottom:1px solid rgba(120,170,255,.1);
  overflow:hidden;
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(600px 260px at 12% 0%,rgba(47,107,255,.14),transparent 70%),
    radial-gradient(420px 220px at 88% 20%,rgba(79,227,193,.07),transparent 72%);
  pointer-events:none;
}
.page-head .container{position:relative;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap;}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--accent);}
.page-head h1{
  font-size:44px;line-height:1.2;letter-spacing:-.01em;margin:16px 0 16px;
  max-width:18em;
}
.page-head .lead{font-size:17px;color:var(--text-2);max-width:640px;}
.head-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap;}

/* ============ 板块标题 ============ */
.sec-head{margin-bottom:40px;}
.sec-head h2{
  font-size:28px;line-height:1.3;position:relative;padding-left:16px;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--primary);
}
.sec-head p{margin-top:12px;color:var(--text-2);font-size:15px;max-width:720px;}

/* ============ 快速自查步骤条 ============ */
.quick-list{border-top:1px solid rgba(120,170,255,.12);}
.quick-item{
  display:flex;align-items:flex-start;gap:22px;
  padding:26px 4px;border-bottom:1px solid rgba(120,170,255,.12);
}
.quick-num{
  font-family:Inter,system-ui,sans-serif;font-size:30px;font-weight:700;
  color:var(--accent);line-height:1.1;flex:0 0 56px;
}
.quick-item h3{font-size:18px;font-weight:600;margin-bottom:6px;}
.quick-item p{color:var(--text-2);font-size:15px;max-width:760px;}

/* ============ FAQ 手风琴 ============ */
.faq-list{max-width:800px;}
.faq-item{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq-item:hover{border-color:var(--line-strong);background:rgba(255,255,255,.06);}
.faq-item[open]{border-color:rgba(120,170,255,.38);background:rgba(255,255,255,.06);}
.faq-item summary{
  list-style:none;cursor:pointer;
  min-height:44px;padding:15px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 16px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--accent);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-answer{
  padding:0 20px 20px;color:var(--text-2);font-size:15px;line-height:1.8;
  border-top:1px solid rgba(120,170,255,.1);margin-top:2px;padding-top:16px;
}
.faq-answer b{color:var(--text);font-weight:600;}

/* ============ 对照表 ============ */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--glass);overflow-x:auto;-webkit-overflow-scrolling:touch;
}
table{border-collapse:collapse;width:100%;min-width:760px;font-size:14.5px;}
thead th{
  text-align:left;padding:16px 20px;font-weight:600;color:var(--text);
  background:var(--primary-soft);border-bottom:1px solid var(--line);white-space:nowrap;
}
tbody td{
  padding:16px 20px;color:var(--text-2);vertical-align:top;
  border-bottom:1px solid rgba(120,170,255,.1);line-height:1.7;
}
tbody tr:last-child td{border-bottom:none;}
tbody tr:nth-child(even){background:var(--glass-2);}
tbody td:first-child{color:var(--text);font-weight:600;}
.table-note{margin-top:14px;font-size:13px;color:var(--text-3);}

/* ============ 支持说明（图文） ============ */
.support-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:center;}
.media{
  border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(47,107,255,.22),rgba(79,227,193,.12));
  aspect-ratio:16/10;
}
.media img{width:100%;height:100%;object-fit:cover;}
.check-list li{
  display:flex;gap:12px;padding:12px 0;border-bottom:1px solid rgba(120,170,255,.1);
  color:var(--text-2);font-size:15px;
}
.check-list li:last-child{border-bottom:none;}
.check-list li::before{
  content:"";flex:0 0 8px;width:8px;height:8px;margin-top:9px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 4px rgba(79,227,193,.12);
}
.check-list li b{color:var(--text);font-weight:600;}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:24px;
  background:linear-gradient(160deg,rgba(47,107,255,.14),rgba(8,13,24,.6) 55%);
  padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-100px;width:340px;height:340px;
  background:radial-gradient(circle,rgba(79,227,193,.16),transparent 66%);
  pointer-events:none;
}
.cta-band h2{font-size:26px;line-height:1.35;position:relative;}
.cta-band p{color:var(--text-2);font-size:15px;margin-top:10px;position:relative;max-width:520px;}
.cta-actions{display:flex;align-items:center;gap:18px;position:relative;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{border-top:1px solid rgba(120,170,255,.12);background:var(--bg-soft);padding:64px 0 28px;margin-top:88px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;}
.footer-brand .brand{margin-bottom:14px;font-size:16px;}
.footer-brand p{color:var(--text-2);font-size:14px;}
.footer-contact{margin-top:16px;font-size:13px;color:var(--text-3);line-height:1.9;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(120,170,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.social-slot{display:flex;gap:10px;}
.social-slot span{width:28px;height:28px;border-radius:50%;border:1px solid rgba(120,170,255,.2);background:rgba(255,255,255,.03);}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--section-y:64px;}
  .page-head h1{font-size:36px;}
  .page-head{padding:56px 0 48px;}
  .support-grid{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:768px){
  .container{padding:0 24px;}
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .mobile-panel{left:24px;right:24px;}
  .page-head h1{font-size:30px;}
  .head-actions .btn{width:100%;}
  .sec-head h2{font-size:24px;}
  .cta-band{padding:32px 24px;}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .quick-item{gap:16px;}
  .quick-num{font-size:24px;flex:0 0 42px;}
}
@media (max-width:520px){
  :root{--section-y:48px;}
  .container{padding:0 20px;}
  .mobile-panel{left:20px;right:20px;}
  .brand{font-size:15px;}
  .brand small{display:none;}
  .page-head h1{font-size:26px;}
  .page-head .lead{font-size:15px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-item summary{font-size:15px;padding:14px 16px;}
  .faq-answer{padding:14px 16px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}