/* roulang page: index */
:root{
  --bg:#070B16;
  --bg-2:#0B1120;
  --card:#111A2E;
  --primary:#2F6BFF;
  --primary-light:#5B8CFF;
  --accent:#16E0B8;
  --amber:#FFB23E;
  --danger:#FF5C7A;
  --disabled:#3A4560;
  --text:#E8EEFF;
  --text-2:#A8B6D4;
  --text-3:#6E7C9A;
  --border:rgba(140,170,255,.14);
  --border-glass:rgba(160,190,255,.18);
  --r-card:16px;
  --r-btn:12px;
  --r-input:10px;
  --r-img:12px;
  --r-badge:6px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --shadow-lg:0 20px 60px rgba(6,12,30,.6);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --space-section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.drawer-open{overflow:hidden}
h1,h2,h3,h4,p,figure,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:var(--primary-light);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:#8FB0FF}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:none;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--space-section) 0}
.section-tight{padding:56px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:clamp(22px,3.2vw,32px);font-weight:700;line-height:1.3;letter-spacing:.01em}
.section-head p{color:var(--text-2);font-size:15px;margin-top:10px;max-width:640px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.06em;text-transform:none}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.text-muted{color:var(--text-3);font-size:13px;line-height:1.5}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;
  padding:13px 26px;border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;text-decoration:none;line-height:1.2}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 0 0 1px rgba(91,140,255,.5),0 8px 28px rgba(47,107,255,.45)}
.btn-primary:hover{background:var(--primary-light);color:#fff;transform:translateY(-2px);box-shadow:0 12px 36px rgba(47,107,255,.6)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(91,140,255,.4),0 4px 14px rgba(47,107,255,.35)}
.btn-ghost{background:transparent;border-color:var(--primary-light);color:var(--primary-light)}
.btn-ghost:hover{background:rgba(47,107,255,.12);color:#9BB8FF;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px);background:rgba(47,107,255,.18)}
.btn-accent{background:transparent;border-color:var(--accent);color:var(--accent)}
.btn-accent:hover{background:rgba(22,224,184,.1);color:#5BF0D0;transform:translateY(-2px)}
.btn-accent:active{transform:translateY(1px)}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:10px}
.btn-lg{padding:16px 34px;font-size:16px;border-radius:999px}
.btn:disabled,.btn[aria-disabled="true"]{background:var(--disabled);color:#8A93AA;border-color:transparent;box-shadow:none;cursor:not-allowed;transform:none}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:600;font-size:14px;
  border-bottom:1px solid rgba(22,224,184,.4);padding-bottom:2px;border-radius:0}
.btn-link:hover{color:#5BF0D0;border-bottom-color:#5BF0D0}
.icon-btn{width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--border);border-radius:10px;background:var(--card);color:var(--text-2);
  transition:all .2s var(--ease)}
.icon-btn:hover{border-color:var(--primary-light);color:var(--text);background:rgba(47,107,255,.14)}
.icon-btn:active{transform:scale(.96)}
.icon-btn svg{width:18px;height:18px}

/* ---------- 徽章/标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:var(--r-badge);
  font-size:12px;font-weight:600;background:rgba(47,107,255,.14);color:var(--primary-light);line-height:1.7}
.badge-hot{background:rgba(255,178,62,.16);color:var(--amber)}
.badge-ok{background:rgba(22,224,184,.14);color:var(--accent)}

/* ---------- 顶栏 ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(7,11,22,.62);
  backdrop-filter:blur(0);border-bottom:1px solid transparent;
  transition:background-color .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease)}
.site-header.scrolled{background:rgba(7,11,22,.88);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px;
  transition:height .24s var(--ease)}
.site-header.scrolled .header-inner{height:62px}
.logo{display:inline-flex;align-items:center;gap:11px;color:var(--text)}
.logo-mark{width:36px;height:36px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(145deg,#2F6BFF,#16E0B8);box-shadow:0 6px 18px rgba(47,107,255,.45);flex:none}
.logo-mark svg{width:19px;height:19px}
.logo-text{font-size:16px;font-weight:700;letter-spacing:.01em;line-height:1.25}
.logo-text em{display:block;font-style:normal;font-size:11px;font-weight:500;color:var(--text-3);letter-spacing:.14em}
.nav{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;display:inline-block;padding:10px 14px;font-size:15px;color:var(--text-2);
  border-radius:9px;transition:color .2s var(--ease),background-color .2s var(--ease)}
.nav-link:hover{color:var(--text);background:rgba(140,170,255,.07)}
.nav-link.active{color:var(--text);font-weight:600}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--accent);box-shadow:0 0 10px rgba(22,224,184,.8)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--border);border-radius:10px;
  align-items:center;justify-content:center;background:var(--card);color:var(--text-2)}
.nav-toggle svg{width:20px;height:20px}
.mobile-drawer{display:none;overflow:hidden;max-height:0;transition:max-height .3s var(--ease);
  background:rgba(11,17,32,.98);border-bottom:1px solid transparent}
.mobile-drawer.open{max-height:420px;border-bottom-color:var(--border)}
.drawer-inner{padding:14px 24px 26px;display:flex;flex-direction:column;gap:6px}
.drawer-link{padding:13px 14px;border-radius:10px;color:var(--text-2);font-size:15px;border:1px solid transparent}
.drawer-link:hover{background:rgba(140,170,255,.07);color:var(--text)}
.drawer-link.active{color:var(--text);background:rgba(47,107,255,.14);border-color:rgba(91,140,255,.35);font-weight:600}
.drawer-cta{margin-top:10px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:78px 0 96px;isolation:isolate}
.hero-bg{position:absolute;inset:0;z-index:-2;background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.5}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(7,11,22,.72) 0%,rgba(7,11,22,.9) 55%,var(--bg) 100%)}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;opacity:.05;pointer-events:none;
  background-image:linear-gradient(rgba(160,190,255,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(160,190,255,.9) 1px,transparent 1px);
  background-size:44px 44px}
.hero-inner{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:56px;align-items:center}
.hero h1{font-size:clamp(28px,5vw,46px);font-weight:700;line-height:1.25;letter-spacing:.02em;margin-top:20px}
.hero-sub{font-size:17px;color:var(--accent);font-weight:600;margin-top:18px}
.hero-desc{color:var(--text-2);font-size:16px;margin-top:14px;max-width:600px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:30px;padding-top:24px;border-top:1px solid var(--border)}
.hero-meta li{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.hero-meta svg{width:15px;height:15px;color:var(--accent);flex:none}
.hero-panel{background:linear-gradient(160deg,rgba(23,34,58,.82),rgba(13,20,38,.72));
  backdrop-filter:blur(12px);border:1px solid var(--border-glass);border-radius:20px;padding:22px;
  box-shadow:var(--shadow-lg)}
.panel-head{display:flex;align-items:center;gap:7px;padding-bottom:14px;border-bottom:1px solid var(--border)}
.panel-dot{width:9px;height:9px;border-radius:50%;background:var(--disabled);flex:none}
.panel-dot:nth-child(1){background:rgba(255,92,122,.7)}
.panel-dot:nth-child(2){background:rgba(255,178,62,.7)}
.panel-dot:nth-child(3){background:rgba(22,224,184,.7)}
.panel-title{margin-left:8px;font-size:13px;color:var(--text-3);letter-spacing:.06em}
.panel-field{padding:14px 0;border-bottom:1px dashed rgba(140,170,255,.16);display:flex;flex-direction:column;gap:6px}
.panel-field:last-of-type{border-bottom:none}
.field-label{font-size:12px;color:var(--text-3);letter-spacing:.08em}
.field-value{display:block;background:rgba(7,11,22,.72);border:1px solid var(--border);border-radius:var(--r-input);
  padding:11px 14px;font-size:14px;color:var(--text-2)}
.panel-foot{margin-top:16px;padding-top:16px;border-top:1px solid var(--border);font-size:12.5px;color:var(--text-3);line-height:1.6}

/* ---------- 保障条 ---------- */
.assure-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.assure-item{background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);padding:24px;
  box-shadow:var(--shadow);transition:border-color .22s var(--ease),transform .22s var(--ease)}
.assure-item:hover{border-color:rgba(91,140,255,.4);transform:translateY(-3px)}
.assure-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(47,107,255,.14);color:var(--primary-light);margin-bottom:16px}
.assure-icon svg{width:22px;height:22px}
.assure-item h3{font-size:17px;font-weight:600;margin-bottom:8px}
.assure-item p{font-size:14px;color:var(--text-2);line-height:1.7}

/* ---------- 截图轮播 ---------- */
.shots{background:var(--bg-2);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.shots-nav{display:flex;gap:10px}
.shots-track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px;
  scrollbar-width:none;-ms-overflow-style:none}
.shots-track::-webkit-scrollbar{display:none}
.shot-card{flex:0 0 clamp(258px,30%,348px);scroll-snap-align:start;background:var(--card);
  border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);
  transition:border-color .22s var(--ease),transform .22s var(--ease)}
.shot-card:hover{border-color:rgba(91,140,255,.42);transform:translateY(-4px)}
.ratio-16x9{position:relative;aspect-ratio:16 / 9;background:#0A1020;overflow:hidden}
.ratio-16x9 img{width:100%;height:100%;object-fit:cover}
.ratio-4x3{position:relative;aspect-ratio:4 / 3;background:#0A1020;overflow:hidden}
.ratio-4x3 img{width:100%;height:100%;object-fit:cover}
.shot-body{padding:20px 22px 24px}
.shot-body h3{font-size:16px;font-weight:600;margin-bottom:8px}
.shot-body p{font-size:13.5px;color:var(--text-2);line-height:1.7}
.shots-progress{margin-top:22px;height:3px;border-radius:3px;background:rgba(140,170,255,.14);overflow:hidden}
.shots-progress span{display:block;height:100%;width:20%;border-radius:3px;
  background:linear-gradient(90deg,var(--primary),var(--accent));transition:width .2s var(--ease)}

/* ---------- 系统要求 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.spec-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);padding:28px;box-shadow:var(--shadow)}
.spec-head{display:flex;align-items:center;gap:12px;padding-bottom:18px;border-bottom:1px solid var(--border);margin-bottom:8px}
.spec-head svg{width:24px;height:24px;color:var(--primary-light)}
.spec-head h3{font-size:18px;font-weight:600}
.spec-list dt{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:13px 0;
  border-bottom:1px solid rgba(140,170,255,.09);font-size:14px}
.spec-list dt:last-of-type{border-bottom:none}
.spec-list dd{display:none}
.spec-key{color:var(--text-3);flex:none}
.spec-val{color:var(--text);text-align:right}
.spec-val em{font-style:normal;color:var(--accent);font-weight:600}
.spec-foot{margin-top:16px;font-size:13px;color:var(--text-3)}

/* ---------- 评价墙 ---------- */
.quotes-track{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.quote-card{background:linear-gradient(165deg,rgba(23,34,58,.62),rgba(13,20,38,.5));
  backdrop-filter:blur(10px);border:1px solid var(--border-glass);border-radius:var(--r-card);padding:26px;
  box-shadow:var(--shadow-lg);display:flex;flex-direction:column;gap:14px}
.quote-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.quote-user{display:flex;align-items:center;gap:11px}
.avatar{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;color:#06121F;background:linear-gradient(140deg,#5B8CFF,#16E0B8);flex:none}
.quote-name{font-size:15px;font-weight:600;line-height:1.35}
.quote-device{font-size:12px;color:var(--text-3)}
.stars{display:flex;gap:2px;color:var(--amber);flex:none}
.stars svg{width:14px;height:14px}
.quote-body{font-size:14.5px;color:var(--text-2);line-height:1.75}

/* ---------- 下载区 ---------- */
.download-wrap{background:linear-gradient(150deg,rgba(23,34,58,.78),rgba(11,17,32,.7));
  backdrop-filter:blur(12px);border:1px solid var(--border-glass);border-radius:22px;
  padding:36px;box-shadow:var(--shadow-lg);display:grid;grid-template-columns:minmax(0,1fr) 210px;gap:36px;align-items:center}
.dl-title{font-size:clamp(20px,2.6vw,26px);font-weight:700;line-height:1.35}
.dl-desc{color:var(--text-2);font-size:15px;margin-top:12px;max-width:560px}
.dl-buttons{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.dl-meta{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:22px;font-size:13px;color:var(--text-3)}
.dl-meta b{color:var(--text-2);font-weight:600}
.dl-check{margin-top:20px;border-top:1px solid var(--border);padding-top:16px}
.dl-check summary{cursor:pointer;font-size:13.5px;color:var(--primary-light);list-style:none;display:inline-flex;align-items:center;gap:6px}
.dl-check summary::-webkit-details-marker{display:none}
.dl-check summary::after{content:"▾";font-size:12px;transition:transform .2s var(--ease)}
.dl-check[open] summary::after{transform:rotate(180deg)}
.dl-check p{font-size:13px;color:var(--text-3);margin-top:12px;line-height:1.8;word-break:break-all}
.qr-box{background:rgba(7,11,22,.7);border:1px solid var(--border);border-radius:var(--r-card);
  padding:18px;text-align:center}
.qr-box svg{width:100%;max-width:140px;height:auto;margin:0 auto;display:block}
.qr-box span{display:block;font-size:12.5px;color:var(--text-3);margin-top:12px;line-height:1.6}

/* ---------- 资讯 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.news-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--shadow);
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease)}
.news-card:hover{border-color:rgba(91,140,255,.42);transform:translateY(-4px);box-shadow:0 14px 34px rgba(0,0,0,.45)}
.news-cover{display:block;position:relative;aspect-ratio:16 / 9;background:#0A1020;overflow:hidden}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-tags{display:flex;align-items:center;justify-content:space-between;gap:12px}
.news-date{font-size:12.5px;color:var(--text-3)}
.news-title{font-size:16.5px;font-weight:600;line-height:1.5}
.news-title a{color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a:hover{color:var(--primary-light)}
.news-summary{font-size:14px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;
  -webkit-box-orient:vertical;overflow:hidden}
.news-more{margin-top:auto;font-size:13.5px;font-weight:600;color:var(--accent);display:inline-flex;align-items:center;gap:6px}
.news-more:hover{color:#5BF0D0}
.news-empty{grid-column:1 / -1;border:1px dashed var(--border);border-radius:var(--r-card);padding:54px 24px;
  text-align:center;background:rgba(17,26,46,.5)}
.news-empty svg{width:56px;height:56px;color:var(--text-3);margin:0 auto 16px}
.news-empty p{color:var(--text-2);font-size:15px;margin-bottom:20px}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto;border-top:1px solid var(--border)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item summary{display:flex;align-items:center;gap:16px;padding:22px 4px;cursor:pointer;list-style:none;
  font-size:16.5px;font-weight:600;color:var(--text);transition:color .2s var(--ease)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary-light)}
.faq-no{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.06em;flex:none;width:26px}
.faq-arrow{margin-left:auto;flex:none;width:18px;height:18px;color:var(--text-3);transition:transform .2s var(--ease)}
.faq-item[open] .faq-arrow{transform:rotate(180deg);color:var(--accent)}
.faq-answer{padding:0 4px 24px 42px;color:var(--text-2);font-size:15px;line-height:1.8;
  animation:fadeIn .2s var(--ease)}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- 底部 CTA ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:22px;padding:52px 44px;
  background:linear-gradient(120deg,rgba(47,107,255,.24),rgba(22,224,184,.14)),rgba(11,17,32,.9);
  border:1px solid var(--border-glass);display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band::after{content:"";position:absolute;inset:0;opacity:.05;pointer-events:none;
  background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center}
.cta-text h2{font-size:clamp(21px,3vw,28px);font-weight:700;line-height:1.35}
.cta-text p{color:var(--text-2);font-size:15px;margin-top:10px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-2);border-top:1px solid var(--border);margin-top:var(--space-section);
  position:relative;overflow:hidden}
.site-footer::after{content:"";position:absolute;inset:0;opacity:.03;pointer-events:none;
  background-image:linear-gradient(rgba(160,190,255,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(160,190,255,.9) 1px,transparent 1px);
  background-size:52px 52px}
.footer-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding:64px 0 44px}
.footer-grid > div{min-width:0}
.footer-grid > div + div{border-left:1px solid var(--border);padding-left:32px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .logo-mark{width:34px;height:34px}
.footer-brand span{font-size:16px;font-weight:700;color:var(--text)}
.footer-desc{font-size:14px;color:var(--text-2);line-height:1.8;max-width:330px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.02em}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--primary-light)}
.footer-contact{font-size:14px;color:var(--text-2);line-height:1.9}
.footer-contact b{color:var(--text);font-weight:600}
.footer-qr{background:rgba(7,11,22,.7);border:1px solid var(--border);border-radius:var(--r-card);padding:16px;text-align:center}
.footer-qr svg{width:112px;height:auto;margin:0 auto;display:block}
.footer-qr span{display:block;font-size:12.5px;color:var(--text-3);margin-top:10px}
.footer-bottom{position:relative;z-index:1;border-top:1px solid var(--border);padding:22px 0 30px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px}
.footer-bottom p{font-size:13px;color:var(--text-3);line-height:1.7}
.footer-bottom span{font-size:13px;color:var(--text-3)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--space-section:72px}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero{padding:58px 0 72px}
  .assure-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .quotes-track{grid-template-columns:repeat(2,minmax(0,1fr))}
  .download-wrap{grid-template-columns:1fr;gap:28px}
  .qr-box{max-width:260px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-grid > div + div{border-left:none;padding-left:0}
}
@media (max-width:900px){
  .nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn-primary{display:none}
  .mobile-drawer{display:block}
}
@media (max-width:768px){
  :root{--space-section:56px}
  .container{padding:0 20px}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:28px}
  .hero{padding:44px 0 60px}
  .hero-meta{gap:10px 18px}
  .assure-grid{grid-template-columns:1fr}
  .spec-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .quotes-track{grid-template-columns:none;display:flex;overflow-x:auto;scroll-snap-type:x mandatory;
    padding-bottom:10px;scrollbar-width:none}
  .quotes-track::-webkit-scrollbar{display:none}
  .quote-card{flex:0 0 84%;scroll-snap-align:start}
  .cta-band{padding:36px 24px}
  .footer-grid{grid-template-columns:1fr;padding:44px 0 32px}
  .footer-grid > div + div{padding-top:28px;border-top:1px solid var(--border)}
  .faq-answer{padding-left:4px}
  .faq-item summary{font-size:15.5px;gap:12px}
  .dl-buttons .btn{width:100%}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .logo-text{font-size:14.5px}
  .hero-cta .btn{width:100%}
  .shot-card{flex:0 0 84%}
  .quote-card{flex:0 0 90%}
  .download-wrap{padding:24px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;
    transition-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --bg-0:#070B16;
  --bg-1:#0B1120;
  --bg-2:#111A2E;
  --primary:#2F6BFF;
  --primary-l:#5B8CFF;
  --accent:#16E0B8;
  --amber:#FFB23E;
  --danger:#FF5C7A;
  --text:#E8EEFF;
  --text-2:#A8B6D4;
  --text-3:#6E7C9A;
  --line:rgba(140,170,255,.14);
  --glass-line:rgba(160,190,255,.18);
  --r-card:16px;
  --r-btn:12px;
  --r-input:10px;
  --r-img:12px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-glass:0 20px 60px rgba(6,12,30,.6);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--primary-l);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent)}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.06em;color:var(--accent);
  text-transform:none;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--accent);box-shadow:0 0 10px rgba(22,224,184,.7)}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,22,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.scrolled{background:rgba(7,11,22,.92);box-shadow:0 10px 30px rgba(0,0,0,.45)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .22s var(--ease)}
.site-header.scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:16px;letter-spacing:.01em;flex:none}
.brand:hover{color:var(--text)}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex:none;
  display:grid;place-items:center;
  background:linear-gradient(140deg,#2F6BFF,#16E0B8);
  box-shadow:0 6px 18px rgba(47,107,255,.42);
}
.logo-mark svg{width:18px;height:18px}
.brand-text{white-space:nowrap}
.nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;padding:8px 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(91,140,255,.09)}
.nav-link.active{color:var(--text);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;
  background:var(--accent);box-shadow:0 0 10px rgba(22,224,184,.85);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:none}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:rgba(17,26,46,.8);cursor:pointer;place-items:center;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--text);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-mask{
  position:fixed;inset:0;background:rgba(4,7,14,.7);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s var(--ease);
}
body.nav-open .nav-mask{opacity:1;visibility:visible}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{
  background:var(--primary);color:#fff;
  box-shadow:0 0 0 1px rgba(91,140,255,.5),0 8px 28px rgba(47,107,255,.45);
}
.btn-primary:hover{
  color:#fff;transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(91,140,255,.6),0 12px 36px rgba(47,107,255,.6);
}
.btn-primary:active{transform:translateY(-1px);box-shadow:0 0 0 1px rgba(91,140,255,.45),0 6px 16px rgba(47,107,255,.4)}
.btn-ghost{background:transparent;border-color:rgba(91,140,255,.5);color:var(--primary-l)}
.btn-ghost:hover{background:rgba(47,107,255,.1);color:var(--text);transform:translateY(-2px)}
.btn-teal{
  background:transparent;border-color:rgba(22,224,184,.55);color:var(--accent);
}
.btn-teal:hover{background:rgba(22,224,184,.1);color:var(--accent);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;overflow:hidden;
  padding:44px 0 42px;
  background-image:linear-gradient(180deg,rgba(7,11,22,.86),rgba(7,11,22,.97)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(140,170,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(140,170,255,.055) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent);
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:nowrap;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:20px;
  overflow:hidden;white-space:nowrap;
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:var(--text-3);opacity:.7}
.breadcrumb .current{color:var(--text-3);overflow:hidden;text-overflow:ellipsis;max-width:52ch}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:6px;font-size:12.5px;font-weight:600;
  background:rgba(47,107,255,.14);color:var(--primary-l);
  border:1px solid rgba(91,140,255,.25);
}
.tag.is-accent{background:rgba(255,178,62,.12);color:var(--amber);border-color:rgba(255,178,62,.3)}
.article-title{
  font-size:clamp(28px,5vw,44px);
  line-height:1.25;font-weight:700;letter-spacing:.02em;
  margin:16px 0 0;max-width:22ch;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  margin-top:22px;padding-top:20px;border-top:1px solid var(--line);
  color:var(--text-2);font-size:14px;
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.article-meta svg{width:16px;height:16px;stroke:var(--text-3);fill:none;stroke-width:1.7}

/* ============ 正文区 ============ */
.article-main{padding:56px 0 80px}
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px) 280px;
  gap:56px;justify-content:center;align-items:start;
}
.article-body{
  color:#DCE5FA;font-size:17px;line-height:1.8;
  min-width:0;
}
.article-body>*+*{margin-top:1.6em}
.article-body h2{
  position:relative;font-size:clamp(21px,2.6vw,27px);font-weight:700;line-height:1.4;
  color:var(--text);padding-left:16px;margin-top:2.1em;scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:3px;border-radius:3px;
  background:var(--accent);box-shadow:0 0 12px rgba(22,224,184,.6);
}
.article-body h3{font-size:20px;font-weight:600;color:var(--text);margin-top:1.8em}
.article-body h4{font-size:17px;font-weight:600;color:var(--text-2);margin-top:1.5em}
.article-body p{margin-top:1.6em}
.article-body ul,.article-body ol{margin-top:1.4em;padding-left:1.4em}
.article-body ul{list-style:none;padding-left:0}
.article-body ul>li{position:relative;padding-left:22px;margin-top:.7em}
.article-body ul>li::before{
  content:"";position:absolute;left:0;top:.68em;width:7px;height:7px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 8px rgba(22,224,184,.6);
}
.article-body ol{list-style:decimal;padding-left:1.5em}
.article-body ol>li{margin-top:.7em;padding-left:.2em}
.article-body ol>li::marker{color:var(--primary-l);font-weight:600}
.article-body a{color:var(--primary-l);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--accent)}
.article-body strong{color:#fff;font-weight:600}
.article-body blockquote{
  margin:1.8em 0;padding:18px 22px;
  background:rgba(17,26,46,.85);
  border-left:3px solid var(--primary-l);
  border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--text-2);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.article-body blockquote p{margin-top:.6em}
.article-body blockquote p:first-child{margin-top:0}
.article-body img{
  width:100%;height:auto;border-radius:var(--r-img);
  border:1px solid var(--line);background:var(--bg-2);
}
.article-body figure{margin:2em 0}
.article-body figcaption{
  margin-top:10px;font-size:13px;color:var(--text-3);text-align:center;line-height:1.6;
}
.article-body table{
  width:100%;border-collapse:collapse;margin-top:1.8em;
  font-size:15px;border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;
}
.article-body thead th{
  background:rgba(47,107,255,.16);color:var(--text);
  font-weight:600;text-align:left;padding:12px 16px;border-bottom:1px solid var(--line);
}
.article-body tbody td{padding:12px 16px;border-bottom:1px solid rgba(140,170,255,.09);color:var(--text-2)}
.article-body tbody tr:nth-child(even){background:rgba(17,26,46,.6)}
.article-body tbody tr:last-child td{border-bottom:none}
.article-body hr{border:none;height:1px;background:var(--line);margin:2.4em 0}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.9em;background:rgba(47,107,255,.12);color:var(--primary-l);
  padding:2px 6px;border-radius:6px;
}
.article-body pre{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-img);
  padding:18px;overflow-x:auto;font-size:14px;line-height:1.7;
}

/* 侧栏目录 */
.toc{
  position:sticky;top:96px;
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-card);
}
.toc-title{font-size:13px;letter-spacing:.08em;color:var(--text-3);margin-bottom:14px}
.toc ol{list-style:none;display:grid;gap:2px}
.toc a{
  display:block;padding:8px 12px;border-radius:8px;
  font-size:14px;line-height:1.55;color:var(--text-2);
  border-left:2px solid transparent;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.toc a:hover{color:var(--text);background:rgba(91,140,255,.08)}
.toc a.active{color:var(--accent);border-left-color:var(--accent);background:rgba(22,224,184,.07)}

/* 文末 */
.article-footer{margin-top:48px;padding-top:32px;border-top:1px solid var(--line)}
.article-actions{display:flex;flex-wrap:wrap;gap:14px}
.more-block{margin-top:44px}
.more-block h2{font-size:22px;font-weight:700;margin-bottom:8px}
.more-lead{color:var(--text-3);font-size:14.5px;margin-bottom:22px}
.more-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.more-card{
  display:block;background:var(--bg-1);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;color:var(--text);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.more-card:hover{transform:translateY(-4px);border-color:rgba(91,140,255,.4);box-shadow:0 16px 40px rgba(0,0,0,.45);color:var(--text)}
.thumb{position:relative;width:100%;aspect-ratio:16/9;background:var(--bg-2);overflow:hidden;border-bottom:1px solid var(--line)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.more-card:hover .thumb img{transform:scale(1.05)}
.more-card-body{padding:18px 20px 22px}
.more-card-body h3{font-size:16.5px;font-weight:600;line-height:1.5;margin-bottom:8px}
.more-card-body p{font-size:14px;color:var(--text-3);line-height:1.7}

/* 空态 */
.article-empty{
  max-width:640px;margin:0 auto;text-align:center;
  padding:64px 28px;background:var(--bg-1);
  border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
}
.empty-art{
  width:96px;height:96px;margin:0 auto 22px;border-radius:24px;
  display:grid;place-items:center;background:var(--bg-2);border:1px solid var(--line);
}
.empty-art svg{width:44px;height:44px;stroke:var(--primary-l);fill:none;stroke-width:1.4}
.article-empty h2{font-size:24px;font-weight:700;margin-bottom:12px}
.article-empty p{color:var(--text-2);font-size:15.5px;margin-bottom:26px}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;margin-bottom:16px}
.footer-brand .logo-mark{width:32px;height:32px}
.footer-desc{color:var(--text-3);font-size:14px;line-height:1.85;max-width:36ch}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text);margin-bottom:16px}
.footer-col ul{list-style:none;display:grid;gap:11px}
.footer-col a{color:var(--text-2);font-size:14px}
.footer-col a:hover{color:var(--accent)}
.footer-contact{color:var(--text-2);font-size:14px;line-height:2.1}
.footer-contact b{color:var(--text);font-weight:600}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;
  color:var(--text-3);font-size:13px;
}
.footer-bottom p{margin:0}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,760px);gap:0}
  .toc{display:none}
  .article-main{padding:48px 0 64px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .nav{
    position:fixed;top:0;right:0;bottom:0;width:min(84vw,330px);
    margin-left:0;padding:92px 22px 32px;
    display:flex;flex-direction:column;align-items:stretch;gap:4px;
    background:var(--bg-1);border-left:1px solid var(--line);
    box-shadow:-24px 0 60px rgba(0,0,0,.6);
    transform:translateX(102%);transition:transform .26s var(--ease);
    z-index:75;overflow-y:auto;
  }
  body.nav-open .nav{transform:translateX(0)}
  .nav-link{padding:13px 14px;font-size:16px;border-radius:12px}
  .nav-link.active::after{left:14px;right:auto;width:22px;bottom:6px}
  .nav-toggle{display:grid}
  .header-actions .btn{display:none}
  .article-hero{padding:32px 0 34px}
  .article-title{max-width:none}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .article-main{padding:40px 0 56px}
  .article-body{font-size:16px;line-height:1.85}
  .more-grid{grid-template-columns:1fr;gap:16px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{justify-content:flex-start}
}
@media (max-width:480px){
  .brand{font-size:15px}
  .brand-text{max-width:52vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .article-meta{gap:10px 16px;font-size:13px}
  .btn{width:100%;padding:13px 18px}
  .article-actions{flex-direction:column}
  .article-empty{padding:44px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --bg:#070B16;
  --bg-band:#0B1120;
  --card:#111A2E;
  --primary:#2F6BFF;
  --primary-light:#5B8CFF;
  --accent:#16E0B8;
  --warn:#FFB23E;
  --error:#FF5C7A;
  --disabled:#3A4560;
  --text:#E8EEFF;
  --text-2:#A8B6D4;
  --text-3:#6E7C9A;
  --border:rgba(140,170,255,.14);
  --border-glass:rgba(160,190,255,.18);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-glass:0 20px 60px rgba(6,12,30,.6);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-num:Inter,system-ui,"PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary-light);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:#8FB2FF}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
::selection{background:rgba(47,107,255,.4);color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-alt{background:var(--bg-band);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(22px,3.2vw,32px)}
.section-head p{margin-top:12px;color:var(--text-2);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--accent);text-transform:none;
  padding:6px 12px;border-radius:999px;
  background:rgba(22,224,184,.1);
  border:1px solid rgba(22,224,184,.28);
}
.tag{
  display:inline-block;font-size:12.5px;font-weight:600;
  padding:4px 10px;border-radius:6px;
  background:rgba(47,107,255,.12);color:var(--primary-light);
}
.tag-warm{background:rgba(255,178,62,.14);color:var(--warn)}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,22,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,11,22,.9);
  border-bottom-color:var(--border);
}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:72px;transition:height .24s var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px}
.logo{
  display:flex;align-items:center;gap:10px;
  color:var(--text);font-weight:700;font-size:17px;
  white-space:nowrap;letter-spacing:.01em;
}
.logo:hover{color:var(--text)}
.logo-mark{
  width:36px;height:36px;border-radius:10px;flex:0 0 auto;
  display:grid;place-items:center;
  background:linear-gradient(140deg,#3E77FF,#1B43A8);
  box-shadow:0 0 0 1px rgba(91,140,255,.4),0 6px 18px rgba(47,107,255,.35);
}
.logo-mark svg{width:20px;height:20px}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(91,140,255,.08)}
.nav-link.active{color:var(--text);background:rgba(91,140,255,.1)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;
  height:2px;border-radius:2px;background:var(--accent);
  box-shadow:0 0 10px rgba(22,224,184,.85);
}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--border);background:rgba(91,140,255,.06);
  cursor:pointer;align-items:center;justify-content:center;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover{background:rgba(91,140,255,.14)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
  transition:transform .2s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.drawer{
  position:fixed;left:0;right:0;top:72px;z-index:70;
  background:rgba(9,14,28,.97);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
  padding:20px 24px 28px;
  display:none;flex-direction:column;gap:6px;
  box-shadow:0 24px 50px rgba(0,0,0,.55);
}
.drawer.open{display:flex}
.drawer a.drawer-link{
  padding:14px 12px;border-radius:10px;color:var(--text-2);font-size:16px;
  border:1px solid transparent;
}
.drawer a.drawer-link:hover,.drawer a.drawer-link.active{
  color:var(--text);background:rgba(91,140,255,.1);border-color:var(--border);
}
.drawer .btn{margin-top:12px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;text-align:center;cursor:pointer;
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(180deg,#3E77FF,#2456D8);color:#fff;
  box-shadow:0 0 0 1px rgba(91,140,255,.5),0 8px 28px rgba(47,107,255,.45);
}
.btn-primary:hover{
  color:#fff;transform:translateY(-2px);
  box-shadow:0 12px 36px rgba(47,107,255,.6);
}
.btn-primary:active{
  transform:translateY(0);
  box-shadow:0 0 0 1px rgba(91,140,255,.4),0 4px 14px rgba(47,107,255,.35);
}
.btn-ghost{
  background:rgba(91,140,255,.06);
  border-color:rgba(91,140,255,.45);
  color:var(--primary-light);
}
.btn-ghost:hover{
  background:rgba(91,140,255,.14);color:var(--text);transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(0);background:rgba(91,140,255,.1)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px}
.btn:disabled{background:var(--disabled);color:#8A93AA;box-shadow:none;cursor:not-allowed;transform:none;border-color:transparent}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--accent);font-weight:600;
  border-bottom:1px solid rgba(22,224,184,.5);
  padding-bottom:2px;border-radius:0;
}
.btn-link:hover{color:#5CF2D2;border-bottom-color:#5CF2D2}

/* 首屏 */
.hero{position:relative;padding:76px 0 84px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  opacity:.3;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.35) 62%,transparent 100%);
  mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.35) 62%,transparent 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(140,170,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(140,170,255,.055) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(90% 70% at 70% 10%,#000 0%,transparent 78%);
  mask-image:radial-gradient(90% 70% at 70% 10%,#000 0%,transparent 78%);
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.hero h1{
  font-size:clamp(28px,5vw,46px);
  line-height:1.25;letter-spacing:.02em;margin:20px 0 0;
}
.hero-sub{
  margin-top:16px;font-size:clamp(17px,2vw,20px);
  color:var(--primary-light);font-weight:600;
}
.hero-desc{margin-top:16px;color:var(--text-2);font-size:16.5px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 22px;
  margin-top:28px;font-size:13.5px;color:var(--text-3);
}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px rgba(22,224,184,.9)}

.hero-visual{border:1px solid var(--border-glass);border-radius:var(--radius-card);background:var(--card);box-shadow:var(--shadow-glass);overflow:hidden}
.media-16x9{position:relative;aspect-ratio:16/9;background:#0C1426;overflow:hidden}
.media-16x9 img{width:100%;height:100%;object-fit:cover}
.hero-visual .visual-foot{
  padding:18px 20px;display:grid;grid-template-columns:repeat(3,1fr);
  gap:12px;border-top:1px solid var(--border);
}
.hero-visual .visual-foot div{text-align:left}
.hero-visual .visual-foot b{display:block;font-family:var(--font-num);font-size:18px;color:var(--text)}
.hero-visual .visual-foot span{font-size:12.5px;color:var(--text-3)}

/* 步骤卡 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step-card{
  position:relative;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-card);padding:26px 24px;
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.step-card:hover{transform:translateY(-3px);border-color:rgba(91,140,255,.4);box-shadow:0 18px 40px rgba(0,0,0,.45)}
.step-num{
  font-family:var(--font-num);font-size:14px;font-weight:700;letter-spacing:.1em;
  color:var(--accent);
}
.step-card h3{margin:14px 0 10px;font-size:20px;font-weight:600}
.step-card p{color:var(--text-2);font-size:15.5px}
.step-card .step-note{
  margin-top:18px;padding-top:16px;border-top:1px dashed var(--border);
  font-size:13.5px;color:var(--text-3);
}

/* 横幅说明带 */
.band{
  position:relative;border-radius:20px;overflow:hidden;
  border:1px solid var(--border);
  background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
}
.band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,11,22,.94) 0%,rgba(7,11,22,.78) 52%,rgba(7,11,22,.5) 100%);
}
.band-inner{position:relative;z-index:2;padding:44px 40px;display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:center}
.band h2{font-size:clamp(20px,2.6vw,26px)}
.band p{margin-top:14px;color:var(--text-2);font-size:15.5px;max-width:620px}
.band-list{display:flex;flex-direction:column;gap:12px}
.band-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--text-2);
  background:rgba(17,26,46,.72);border:1px solid var(--border);
  border-radius:12px;padding:12px 14px;
}
.band-list b{color:var(--text);font-weight:600}

/* 注意事项 */
.check-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:start}
.check-list li{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 0;border-bottom:1px solid var(--border);
}
.check-list li:first-child{padding-top:0}
.check-list svg{flex:0 0 auto;width:22px;height:22px;margin-top:3px}
.check-list b{display:block;font-size:16.5px;font-weight:600;margin-bottom:4px}
.check-list span{color:var(--text-2);font-size:15px}
.aside-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-card);
}
.aside-card h3{font-size:19px;margin-bottom:14px}
.aside-card ul{display:flex;flex-direction:column;gap:12px}
.aside-card li{font-size:14.5px;color:var(--text-2);padding-left:16px;position:relative}
.aside-card li::before{
  content:"";position:absolute;left:0;top:11px;
  width:6px;height:6px;border-radius:50%;background:var(--primary-light);
}
.aside-card .media-16x9{margin-top:18px;border-radius:12px;border:1px solid var(--border)}

/* 入口形态对照 */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.compare-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:28px 26px;box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.compare-card:hover{transform:translateY(-3px);border-color:rgba(22,224,184,.4)}
.compare-card h3{font-size:21px;display:flex;align-items:center;gap:10px;margin-bottom:8px}
.compare-card .lead{color:var(--text-2);font-size:15.5px;margin-bottom:18px}
.compare-card dl{margin:0;display:flex;flex-direction:column;gap:0}
.compare-card dt{
  font-size:13px;color:var(--text-3);letter-spacing:.04em;
  padding-top:14px;border-top:1px solid var(--border);margin-top:14px;
}
.compare-card dt:first-of-type{border-top:none;margin-top:0;padding-top:0}
.compare-card dd{margin:6px 0 0;font-size:15.5px;color:var(--text)}

/* FAQ */
.faq-list{max-width:860px;border-top:1px solid var(--border)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;gap:16px;align-items:center;
  padding:22px 4px;font-size:17px;font-weight:600;
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary-light)}
.faq-num{font-family:var(--font-num);font-size:13.5px;font-weight:700;color:var(--accent);flex:0 0 auto}
.faq-arrow{margin-left:auto;flex:0 0 auto;transition:transform .2s var(--ease);color:var(--text-3)}
.faq-item[open] .faq-arrow{transform:rotate(180deg);color:var(--accent)}
.faq-body{padding:0 4px 24px 46px;color:var(--text-2);font-size:15.5px}
.faq-body p+p{margin-top:10px}

/* 收口 CTA */
.cta-band{padding:0 0 96px}
.cta-inner{
  border:1px solid var(--border);border-radius:20px;
  background:
    radial-gradient(120% 180% at 8% 0%,rgba(47,107,255,.28) 0%,transparent 58%),
    radial-gradient(90% 160% at 96% 100%,rgba(22,224,184,.18) 0%,transparent 62%),
    var(--card);
  padding:44px 40px;
  display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
  box-shadow:var(--shadow-card);
}
.cta-inner h2{font-size:clamp(21px,2.6vw,28px)}
.cta-inner p{margin-top:10px;color:var(--text-2);font-size:15.5px;max-width:600px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* 页脚 */
.site-footer{background:#05080F;border-top:1px solid var(--border);padding:64px 0 28px;position:relative}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(140,170,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(140,170,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 70%);
  mask-image:linear-gradient(180deg,#000,transparent 70%);
}
.site-footer .container{position:relative;z-index:2}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;
  padding-bottom:36px;border-bottom:1px solid var(--border);
}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--text)}
.footer-brand .logo-mark{width:34px;height:34px}
.footer-desc{margin-top:16px;color:var(--text-2);font-size:14.5px;max-width:380px}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:var(--text-2);font-size:14.5px}
.footer-col a:hover{color:var(--primary-light)}
.footer-contact{color:var(--text-2);font-size:14.5px;line-height:2}
.footer-contact b{color:var(--text);font-weight:600;font-family:var(--font-num)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  padding-top:22px;font-size:13px;color:var(--text-3);
}
.footer-bottom span{font-family:var(--font-num);color:var(--text-3)}

/* 响应式 */
@media (max-width:1279px){
  .hero-grid{gap:40px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .nav{display:none}
  .nav-toggle{display:flex}
  .header-actions .btn{display:none}
  .hero{padding:56px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-desc{max-width:none}
  .steps{grid-template-columns:1fr}
  .check-grid{grid-template-columns:1fr;gap:28px}
  .compare-grid{grid-template-columns:1fr}
  .band-inner{grid-template-columns:1fr;gap:24px;padding:36px 30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cta-inner{padding:36px 28px}
  .cta-band{padding:0 0 72px}
}
@media (max-width:767px){
  body{font-size:16px}
  .section{padding:56px 0}
  .container{padding:0 20px}
  .header-inner{height:64px;gap:16px}
  .logo{font-size:15.5px}
  .logo-mark{width:32px;height:32px}
  .hero{padding:44px 0 52px}
  .hero-actions .btn{width:100%}
  .hero-visual .visual-foot{grid-template-columns:1fr 1fr;gap:14px 10px}
  .band-inner{padding:28px 22px}
  .cta-inner{padding:28px 22px;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:26px}
  .faq-item summary{font-size:16px;gap:12px;padding:18px 2px}
  .faq-body{padding:0 2px 20px 30px}
  .step-card{padding:22px 20px}
}
@media (max-width:480px){
  .hero-meta{font-size:12.5px;gap:8px 16px}
  .hero-visual .visual-foot{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --bg:#070B16;
  --bg-band:#0B1120;
  --card:#111A2E;
  --card-2:#151F38;
  --primary:#2F6BFF;
  --primary-light:#5B8CFF;
  --accent:#16E0B8;
  --warn:#FFB23E;
  --danger:#FF5C7A;
  --disabled:#3A4560;
  --text:#E8EEFF;
  --text-2:#A8B6D4;
  --text-3:#6E7C9A;
  --line:rgba(140,170,255,.14);
  --glass-line:rgba(160,190,255,.18);
  --r-card:16px;
  --r-btn:12px;
  --r-input:10px;
  --r-img:12px;
  --r-badge:6px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-glass:0 20px 60px rgba(6,12,30,.6);
  --sp-section:96px;
  --sp-section-md:72px;
  --sp-section-sm:56px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-num:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::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:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--primary-light);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:#8FB0FF}
button,input,select,textarea{font:inherit;color:inherit}
p{margin:0 0 1.6em}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;color:var(--text);line-height:1.3}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.container{width:100%;max-width:1248px;margin:0 auto;padding:0 24px}
.container-narrow{max-width:760px;margin:0 auto}
.num{font-family:var(--font-num)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  text-decoration:none;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn svg{flex:none}
.btn-primary{
  background:var(--primary);color:#fff;
  box-shadow:0 0 0 1px rgba(91,140,255,.5),0 8px 28px rgba(47,107,255,.45);
}
.btn-primary:hover{background:#3D77FF;color:#fff;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(91,140,255,.6),0 12px 36px rgba(47,107,255,.6)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(91,140,255,.45),0 4px 16px rgba(47,107,255,.4)}
.btn-outline{background:transparent;border-color:rgba(22,224,184,.55);color:var(--accent)}
.btn-outline:hover{background:rgba(22,224,184,.1);color:#7EF0D8;transform:translateY(-2px);box-shadow:0 10px 26px rgba(22,224,184,.18)}
.btn-outline:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:transparent;border-color:rgba(91,140,255,.45);color:var(--primary-light)}
.btn-ghost:hover{background:rgba(91,140,255,.1);color:#9DBBFF;border-color:rgba(91,140,255,.7)}
.btn-ghost:active{background:rgba(91,140,255,.16)}
.btn-lg{padding:15px 28px;font-size:16px;border-radius:14px}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none;pointer-events:none}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--accent);font-weight:600;
  border-bottom:1px solid rgba(22,224,184,.45);
  padding-bottom:2px;
}
.text-link:hover{color:#7EF0D8;border-bottom-color:#7EF0D8}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-badge);
  font-size:13px;font-weight:600;line-height:1.5;
  background:rgba(47,107,255,.14);
  color:#9DBBFF;border:1px solid rgba(47,107,255,.28);
}
.tag--accent{background:rgba(22,224,184,.12);color:#7EF0D8;border-color:rgba(22,224,184,.3)}
.tag--warn{background:rgba(255,178,62,.12);color:#FFCB77;border-color:rgba(255,178,62,.3)}
.tag--muted{background:rgba(110,124,154,.14);color:#A8B6D4;border-color:rgba(110,124,154,.3)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--accent);
}
.eyebrow::before{content:"";width:20px;height:2px;border-radius:2px;background:var(--accent);box-shadow:0 0 10px rgba(22,224,184,.7)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,22,.74);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(7,11,22,.94);box-shadow:0 10px 30px rgba(0,0,0,.4)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .24s var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#fff;letter-spacing:.01em}
.brand:hover{color:#fff}
.logo-mark{
  width:34px;height:34px;flex:none;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,#2F6BFF,#1B3CB8);
  box-shadow:0 6px 18px rgba(47,107,255,.45);
}
.logo-mark svg{width:18px;height:18px}
.nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:#fff;background:rgba(91,140,255,.08)}
.nav-link.active{color:#fff;font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--accent);box-shadow:0 0 10px rgba(22,224,184,.85);
}
.header-cta{margin-left:12px}
.menu-toggle{
  display:none;width:42px;height:42px;margin-left:auto;
  border-radius:10px;border:1px solid var(--line);
  background:rgba(17,26,46,.75);cursor:pointer;
  align-items:center;justify-content:center;
}
.menu-toggle:hover{border-color:rgba(91,140,255,.5)}
.menu-toggle svg{width:20px;height:20px;stroke:#E8EEFF}
.mobile-drawer{
  position:fixed;left:0;right:0;top:0;bottom:0;z-index:70;
  background:rgba(7,11,22,.98);
  padding:96px 24px 32px;
  display:none;flex-direction:column;gap:6px;
}
.mobile-drawer.is-open{display:flex}
.mobile-drawer .nav-link{
  font-size:17px;padding:16px 14px;border-radius:12px;
  border:1px solid transparent;
}
.mobile-drawer .nav-link.active{border-color:rgba(22,224,184,.35);background:rgba(22,224,184,.07)}
.mobile-drawer .nav-link.active::after{display:none}
.mobile-drawer .btn{margin-top:18px}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:64px 0 80px;
  background:
    linear-gradient(180deg,rgba(7,11,22,.88) 0%,rgba(7,11,22,.94) 55%,rgba(7,11,22,1) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(rgba(160,190,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(160,190,255,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero-inner{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary-light)}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:rgba(110,124,154,.7)}
.breadcrumb .current{color:var(--text-2)}
.hero h1{
  font-size:clamp(28px,5vw,46px);
  font-weight:700;line-height:1.25;letter-spacing:.02em;
  margin:16px 0 18px;max-width:19em;
}
.hero-sub{
  font-size:17px;color:var(--text-2);max-width:640px;margin:0 0 30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-facts{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:14px;margin-top:40px;max-width:720px;
}
.fact{
  background:var(--card);border:1px solid var(--line);
  border-radius:14px;padding:16px 18px;
}
.fact b{display:block;font-family:var(--font-num);font-size:20px;font-weight:700;color:#fff;line-height:1.4}
.fact span{display:block;font-size:13px;color:var(--text-3);margin-top:2px}

/* ---------- 板块 ---------- */
.section{padding:var(--sp-section) 0}
.section--band{background:var(--bg-band);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:38px}
.section-title{font-size:clamp(22px,3.2vw,32px);font-weight:700;margin-bottom:12px}
.section-sub{color:var(--text-2);margin:0;font-size:16px}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:38px}
.section-head-row .section-head{margin-bottom:0}

/* ---------- 版本表 ---------- */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--card);overflow-x:auto;box-shadow:var(--shadow-card);
}
.version-table{min-width:760px;font-size:15px}
.version-table th{
  text-align:left;font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--text-3);background:rgba(11,17,32,.85);
  padding:15px 18px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.version-table td{
  padding:18px;border-bottom:1px solid var(--line);color:var(--text-2);vertical-align:middle;
}
.version-table tbody tr:last-child td{border-bottom:0}
.version-row{cursor:pointer;transition:background .2s var(--ease)}
.version-row:hover td{background:rgba(91,140,255,.06)}
.version-row.is-selected td{background:rgba(47,107,255,.13);color:var(--text)}
.version-row.is-selected td:first-child{box-shadow:inset 3px 0 0 var(--accent)}
.v-name{display:block;color:var(--text);font-weight:600}
.v-desc{display:block;font-size:13px;color:var(--text-3);margin-top:2px}
.table-note{margin-top:14px;font-size:13px;color:var(--text-3)}

/* ---------- 下载面板（玻璃） ---------- */
.download-panel{
  border-radius:20px;padding:32px;
  background:linear-gradient(158deg,rgba(36,58,116,.55) 0%,rgba(13,20,38,.78) 62%);
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow-glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.download-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:32px;align-items:start}
.download-title{font-size:22px;font-weight:700;margin-bottom:10px}
.download-desc{color:var(--text-2);font-size:15px;margin:0 0 24px;max-width:44em}
.download-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:18px}
.download-meta{font-size:13px;color:var(--text-3)}
.check-info{margin-top:20px;border-top:1px solid var(--line);padding-top:16px}
.check-info summary{
  cursor:pointer;font-size:14px;color:var(--primary-light);
  list-style:none;display:flex;align-items:center;gap:8px;font-weight:600;
}
.check-info summary::-webkit-details-marker{display:none}
.check-info summary::after{content:"▾";font-size:12px;transition:transform .2s var(--ease);margin-left:auto}
.check-info[open] summary::after{transform:rotate(180deg)}
.check-list{margin-top:14px;font-size:13px;color:var(--text-2);display:grid;gap:8px}
.check-list li{display:flex;gap:10px;line-height:1.7}
.check-list li span:first-child{color:var(--text-3);min-width:82px;flex:none}
.info-box{
  background:rgba(7,11,22,.55);border:1px solid var(--line);
  border-radius:14px;padding:22px;
}
.info-box h3{font-size:15px;margin-bottom:14px;color:var(--text)}
.info-row{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14px}
.info-row:last-of-type{border-bottom:0}
.info-row dt{color:var(--text-3);margin:0}
.info-row dd{margin:0;color:var(--text-2);text-align:right}
.info-tip{margin-top:16px;font-size:13px;color:var(--text-3);line-height:1.7}

/* ---------- 界面预览 ---------- */
.media-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.media-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.media-card:hover{transform:translateY(-3px);border-color:rgba(91,140,255,.35)}
.ratio{position:relative;aspect-ratio:16/9;background:#0B1120;overflow:hidden}
.ratio img{width:100%;height:100%;object-fit:cover}
.ratio::after{content:"";position:absolute;inset:0;border-bottom:1px solid var(--line);pointer-events:none}
.media-body{padding:20px 22px}
.media-body h3{font-size:17px;margin-bottom:8px}
.media-body p{margin:0;font-size:14px;color:var(--text-2)}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:28px;border-left:1px solid var(--line);max-width:820px}
.timeline li{position:relative;padding-bottom:32px}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{
  content:"";position:absolute;left:-34px;top:9px;width:11px;height:11px;border-radius:50%;
  background:var(--primary-light);box-shadow:0 0 0 4px rgba(91,140,255,.15);
}
.timeline li.is-latest::before{background:var(--accent);box-shadow:0 0 0 4px rgba(22,224,184,.16),0 0 14px rgba(22,224,184,.5)}
.timeline-date{font-family:var(--font-num);font-size:13px;letter-spacing:.04em;color:var(--accent)}
.timeline-title{font-size:17px;font-weight:600;margin:6px 0 8px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.timeline-desc{font-size:15px;color:var(--text-2);margin:0;max-width:60em}

/* ---------- 系统要求 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.spec-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px;box-shadow:var(--shadow-card);
}
.spec-card-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.spec-icon{
  width:38px;height:38px;flex:none;border-radius:11px;display:grid;place-items:center;
  background:rgba(47,107,255,.14);border:1px solid rgba(47,107,255,.3);
}
.spec-icon svg{width:20px;height:20px;stroke:var(--primary-light)}
.spec-card-head h3{font-size:17px}
.spec-card-head span{display:block;font-size:13px;color:var(--text-3);font-weight:400}
.spec-row{
  display:grid;grid-template-columns:1fr 1.2fr 1.2fr;gap:12px;
  padding:12px 0;border-bottom:1px dashed var(--line);font-size:14px;color:var(--text-2);
}
.spec-row:last-child{border-bottom:0}
.spec-row.spec-head-row{border-bottom:1px solid var(--line);font-size:12px;color:var(--text-3);letter-spacing:.04em;padding-bottom:10px}
.spec-row .label{color:var(--text-3)}

/* ---------- 评价 ---------- */
.review-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.review-card{
  border-radius:var(--r-card);padding:24px;
  background:linear-gradient(160deg,rgba(30,48,96,.45) 0%,rgba(13,20,38,.7) 70%);
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow-glass);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:42px;height:42px;flex:none;border-radius:50%;display:grid;place-items:center;
  font-weight:700;color:#fff;font-family:var(--font-num);
  background:linear-gradient(135deg,#2F6BFF,#16E0B8);
}
.review-head b{display:block;font-size:15px;color:#fff}
.review-head em{display:block;font-style:normal;font-size:13px;color:var(--text-3)}
.stars{margin-left:auto;color:var(--warn);font-size:14px;letter-spacing:2px;flex:none}
.review-card p{margin:0;font-size:15px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:flex-start;gap:14px;
  padding:22px 4px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--text);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:#fff}
.faq-num{font-family:var(--font-num);font-size:14px;color:var(--accent);min-width:26px;padding-top:3px}
.faq-arrow{margin-left:auto;flex:none;color:var(--text-3);transition:transform .22s var(--ease);padding-top:5px}
.faq-item[open] .faq-arrow{transform:rotate(180deg)}
.faq-body{padding:0 0 24px 40px;color:var(--text-2);font-size:16px;max-width:64em}
.faq-body p{margin:0}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:20px;padding:44px;
  border:1px solid var(--line);
  background:
    linear-gradient(120deg,rgba(7,11,22,.9) 0%,rgba(11,17,32,.86) 60%,rgba(20,33,66,.9) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:clamp(20px,2.6vw,28px);margin-bottom:10px}
.cta-band p{margin:0;color:var(--text-2);max-width:52em}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-actions .text-link{align-self:center}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-band);border-top:1px solid var(--line);
  padding:64px 0 28px;position:relative;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.04;
  background-image:linear-gradient(rgba(160,190,255,.7) 1px,transparent 1px),linear-gradient(90deg,rgba(160,190,255,.7) 1px,transparent 1px);
  background-size:72px 72px;
}
.site-footer .container{position:relative;z-index:1}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:32px;
  padding-bottom:36px;border-bottom:1px solid var(--line);
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-desc{font-size:14px;color:var(--text-2);margin:0;max-width:38em;line-height:1.8}
.footer-col h4{font-size:15px;margin-bottom:16px;color:#fff}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--primary-light)}
.footer-contact{font-size:14px;color:var(--text-2);line-height:2;margin:0}
.footer-contact b{color:var(--text);font-weight:600}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:22px;font-size:13px;color:var(--text-3);
}
.footer-bottom p{margin:0}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1120px}
}
@media (max-width:1023px){
  :root{--sp-section:var(--sp-section-md)}
  .nav{display:none}
  .header-cta{display:none}
  .menu-toggle{display:inline-flex}
  .download-grid{grid-template-columns:1fr;gap:26px}
  .spec-grid{grid-template-columns:1fr}
  .section{padding:72px 0}
}
@media (max-width:900px){
  .review-grid{grid-template-columns:1fr}
}
@media (max-width:767px){
  :root{--sp-section:var(--sp-section-sm)}
  body{font-size:16px;line-height:1.8}
  .container{padding:0 20px}
  .header-inner{height:64px}
  .site-header.is-scrolled .header-inner{height:58px}
  .brand{font-size:15px}
  .hero{padding:40px 0 56px}
  .hero-sub{font-size:16px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .hero-facts{grid-template-columns:1fr;gap:12px;margin-top:28px}
  .section{padding:56px 0}
  .section-head{margin-bottom:26px}
  .download-panel{padding:24px 20px;border-radius:16px}
  .download-actions{gap:12px}
  .download-actions .btn{width:100%}
  .media-grid{grid-template-columns:1fr}
  .table-wrap{border-radius:14px;border:0;background:transparent;box-shadow:none;overflow:visible}
  .version-table{min-width:0;display:block}
  .version-table thead{display:none}
  .version-table tbody,.version-table tr,.version-table td{display:block;width:100%}
  .version-table tr{
    background:var(--card);border:1px solid var(--line);border-radius:14px;
    padding:12px 18px;margin-bottom:14px;box-shadow:var(--shadow-card);
  }
  .version-table tr.is-selected{border-color:rgba(22,224,184,.4)}
  .version-table td{
    display:grid;grid-template-columns:88px 1fr;gap:10px;align-items:start;
    padding:9px 0;border:0;border-bottom:1px dashed var(--line);text-align:right;
  }
  .version-table tr td:last-child{border-bottom:0}
  .version-table td::before{content:attr(data-label);color:var(--text-3);font-size:14px;text-align:left}
  .version-row.is-selected td{background:transparent}
  .version-row.is-selected td:first-child{box-shadow:none}
  .spec-row{grid-template-columns:1fr;gap:4px;padding:14px 0}
  .spec-row.spec-head-row{display:none}
  .spec-row .label{font-weight:600;color:var(--text-2)}
  .cta-band{padding:28px 22px;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .review-card{padding:20px}
  .faq-item summary{font-size:16px;padding:18px 2px}
  .faq-body{padding-left:0}
}
@media (max-width:480px){
  .hero h1{font-size:26px}
  .section-title{font-size:21px}
  .btn{font-size:14px;padding:12px 18px}
  .btn-lg{padding:13px 20px;font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --bg:#070B16;
  --bg-2:#0B1120;
  --card:#111A2E;
  --card-2:#0E1526;
  --primary:#2F6BFF;
  --primary-light:#5B8CFF;
  --accent:#16E0B8;
  --warn:#FFB23E;
  --danger:#FF5C7A;
  --disabled:#3A4560;
  --text:#E8EEFF;
  --text-2:#A8B6D4;
  --text-3:#6E7C9A;
  --border:rgba(140,170,255,.14);
  --border-glass:rgba(160,190,255,.18);
  --r-card:16px;
  --r-btn:12px;
  --r-input:10px;
  --r-img:12px;
  --r-badge:6px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-glass:0 20px 60px rgba(6,12,30,.6);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --read:760px;
}

/* ============ Reset / Base ============ */
*,*::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","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary-light);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--accent);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;}
svg{display:block;}
::selection{background:rgba(47,107,255,.4);color:#fff;}

/* ============ 布局工具 ============ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:clamp(22px,3.2vw,32px);font-weight:700;line-height:1.3;letter-spacing:.01em;}
.section-head p{margin-top:12px;color:var(--text-2);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--accent);text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}
.divider{height:1px;background:var(--border);border:0;margin:0;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;text-decoration:none;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn svg{width:18px;height:18px;flex:none;}
.btn-primary{
  background:var(--primary);color:#fff;
  box-shadow:0 0 0 1px rgba(91,140,255,.5),0 8px 28px rgba(47,107,255,.45);
}
.btn-primary:hover{
  color:#fff;transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(91,140,255,.6),0 12px 36px rgba(47,107,255,.6);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(91,140,255,.45),0 4px 14px rgba(47,107,255,.35);}
.btn-ghost{
  background:transparent;border-color:rgba(91,140,255,.5);color:var(--primary-light);
}
.btn-ghost:hover{background:rgba(47,107,255,.1);color:var(--primary-light);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-accent{
  background:transparent;border-color:rgba(22,224,184,.55);color:var(--accent);
}
.btn-accent:hover{background:rgba(22,224,184,.1);color:var(--accent);transform:translateY(-2px);}
.btn:focus-visible,a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;
}
.btn:disabled,.btn.is-disabled{
  background:var(--disabled);border-color:var(--disabled);color:#8A97B4;
  box-shadow:none;cursor:not-allowed;transform:none;
}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px;}
.btn-pill{border-radius:999px;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-badge);
  font-size:12px;font-weight:600;line-height:1.5;
  background:rgba(47,107,255,.12);color:var(--primary-light);
  border:1px solid rgba(47,107,255,.2);
}
.badge--new{background:rgba(255,178,62,.14);color:var(--warn);border-color:rgba(255,178,62,.28);}
.badge--ok{background:rgba(22,224,184,.12);color:var(--accent);border-color:rgba(22,224,184,.24);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,22,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,11,22,.9);
  border-bottom-color:var(--border);
}
.header-inner{
  display:flex;align-items:center;gap:24px;
  height:76px;
  transition:height .25s var(--ease);
}
.site-header.is-scrolled .header-inner{height:64px;}
.logo{
  display:flex;align-items:center;gap:10px;flex:none;
  color:var(--text);font-weight:700;font-size:16px;letter-spacing:.01em;
}
.logo:hover{color:var(--text);}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--primary),#1B3FB8);
  box-shadow:0 0 0 1px rgba(91,140,255,.4),0 6px 18px rgba(47,107,255,.4);
}
.logo-mark svg{width:18px;height:18px;}
.logo-text{white-space:nowrap;}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;
  display:inline-block;padding:10px 14px;
  color:var(--text-2);font-size:15px;font-weight:500;
  border-radius:10px;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(91,140,255,.08);}
.nav-link.active{color:var(--text);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--accent);border-radius:2px;
  box-shadow:0 0 10px rgba(22,224,184,.8);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:none;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  background:transparent;border:1px solid var(--border);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--border);
  background:rgba(7,11,22,.98);
  padding:16px 24px 28px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .nav{flex-direction:column;align-items:stretch;gap:2px;margin:0 0 18px;}
.mobile-drawer .nav-link{padding:14px 12px;border-radius:10px;}
.mobile-drawer .nav-link.active{background:rgba(22,224,184,.08);}
.mobile-drawer .nav-link.active::after{left:12px;right:auto;width:3px;height:18px;bottom:auto;top:50%;transform:translateY(-50%);}

/* ============ Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:110px 0 90px;
  background:var(--bg);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  opacity:.3;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 420px at 12% 8%,rgba(47,107,255,.28),transparent 65%),
    linear-gradient(180deg,rgba(7,11,22,.82) 0%,rgba(7,11,22,.92) 60%,var(--bg) 100%);
}
.page-hero .grid-lines{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  background-image:linear-gradient(rgba(140,170,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(140,170,255,.06) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:start;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:rgba(140,170,255,.35);}
.breadcrumb .current{color:var(--text-2);}
.hero-title{
  font-size:clamp(28px,5vw,46px);
  font-weight:700;line-height:1.25;letter-spacing:.02em;
}
.hero-title em{font-style:normal;color:var(--accent);}
.hero-sub{
  margin-top:20px;max-width:640px;
  font-size:17px;color:var(--text-2);line-height:1.8;
}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}

/* Hero 侧栏：问题搜索 */
.hero-panel{
  background:var(--card-2);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:var(--shadow-card);
}
.hero-panel h2{font-size:17px;font-weight:700;margin-bottom:6px;}
.hero-panel .panel-note{font-size:13px;color:var(--text-3);margin-bottom:18px;}
.search-box{position:relative;display:flex;align-items:center;}
.search-box svg{
  position:absolute;left:14px;width:18px;height:18px;color:var(--text-3);pointer-events:none;
}
.search-box input{
  width:100%;padding:13px 14px 13px 44px;
  background:#0B1120;border:1px solid var(--border);border-radius:var(--r-input);
  color:var(--text);font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box input::placeholder{color:var(--text-3);}
.search-box input:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(22,224,184,.15);
}
.quick-list{margin-top:20px;display:grid;gap:10px;}
.quick-list a{
  display:flex;align-items:center;gap:10px;
  padding:11px 14px;border-radius:10px;
  background:rgba(91,140,255,.05);
  border:1px solid var(--border);
  color:var(--text-2);font-size:14px;
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.quick-list a:hover{color:var(--text);border-color:rgba(91,140,255,.4);transform:translateX(3px);}
.quick-list .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none;}

/* ============ 锚点胶囊 ============ */
.anchor-bar{
  position:relative;z-index:3;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  background:var(--bg-2);
}
.anchor-inner{
  display:flex;gap:10px;overflow-x:auto;padding:16px 24px;
  max-width:var(--container);margin:0 auto;
  scrollbar-width:thin;
}
.anchor-inner::-webkit-scrollbar{height:5px;}
.anchor-inner::-webkit-scrollbar-thumb{background:rgba(140,170,255,.2);border-radius:4px;}
.pill{
  flex:none;
  padding:8px 16px;border-radius:999px;
  font-size:14px;font-weight:500;
  color:var(--text-2);background:rgba(91,140,255,.06);
  border:1px solid var(--border);
  transition:all .2s var(--ease);
}
.pill:hover{color:var(--text);border-color:rgba(91,140,255,.45);background:rgba(47,107,255,.12);}

/* ============ 快速入口卡 ============ */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.entry-card{
  display:block;
  background:var(--card-2);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:26px;
  color:var(--text);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.entry-card:hover{
  transform:translateY(-3px);
  border-color:rgba(91,140,255,.42);
  box-shadow:var(--shadow-card);
  color:var(--text);
}
.entry-icon{
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(47,107,255,.12);
  border:1px solid rgba(47,107,255,.24);
  margin-bottom:18px;
}
.entry-icon svg{width:22px;height:22px;color:var(--primary-light);}
.entry-card h3{font-size:18px;font-weight:600;margin-bottom:10px;}
.entry-card p{font-size:14px;color:var(--text-2);line-height:1.75;}
.entry-more{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:16px;font-size:14px;font-weight:600;color:var(--accent);
}
.entry-more svg{width:16px;height:16px;transition:transform .2s var(--ease);}
.entry-card:hover .entry-more svg{transform:translateX(4px);}

/* ============ 安全自查（图文） ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.media-frame{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--border);
  background:#0B1120;
  aspect-ratio:4/3;
  box-shadow:var(--shadow-card);
}
.media-frame img{width:100%;height:100%;object-fit:cover;opacity:.9;}
.media-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,22,.1),rgba(7,11,22,.65));
}
.check-list{display:grid;gap:14px;margin-top:26px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:16px 18px;
  background:var(--card-2);
  border:1px solid var(--border);
  border-radius:12px;
  font-size:14.5px;color:var(--text-2);line-height:1.7;
}
.check-list li b{color:var(--text);font-weight:600;}
.check-icon{
  width:22px;height:22px;border-radius:50%;flex:none;margin-top:2px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(22,224,184,.14);
  border:1px solid rgba(22,224,184,.3);
}
.check-icon svg{width:12px;height:12px;color:var(--accent);}

/* ============ 玻璃安全提示卡（本页唯一玻璃） ============ */
.glass-alert{
  position:relative;
  display:grid;grid-template-columns:auto 1fr;gap:22px;align-items:flex-start;
  padding:30px 32px;
  border-radius:var(--r-card);
  background:linear-gradient(135deg,rgba(47,107,255,.18),rgba(11,17,32,.62));
  border:1px solid var(--border-glass);
  box-shadow:var(--shadow-glass),inset 0 0 0 1px rgba(255,255,255,.04);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  overflow:hidden;
}
.glass-alert::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(160,190,255,.6),transparent);
}
.alert-icon{
  width:48px;height:48px;border-radius:14px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,178,62,.16);
  border:1px solid rgba(255,178,62,.32);
}
.alert-icon svg{width:24px;height:24px;color:var(--warn);}
.glass-alert h3{font-size:19px;font-weight:700;margin-bottom:10px;}
.glass-alert p{font-size:14.5px;color:var(--text-2);line-height:1.8;}
.glass-alert strong{color:var(--warn);font-weight:600;}

/* ============ FAQ ============ */
.faq-group{margin-bottom:44px;}
.faq-group:last-child{margin-bottom:0;}
.faq-group-head{
  display:flex;align-items:center;gap:12px;
  margin-bottom:18px;
  padding-bottom:14px;
  border-bottom:1px solid var(--border);
}
.faq-group-head h3{font-size:20px;font-weight:600;}
.faq-group-head .count{
  font-size:13px;color:var(--text-3);
}
.faq-list{border-top:1px solid var(--border);}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item summary{
  display:flex;align-items:center;gap:16px;
  padding:20px 4px;
  cursor:pointer;
  list-style:none;
  font-size:16.5px;font-weight:600;color:var(--text);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::marker{content:"";}
.faq-item summary:hover{color:var(--primary-light);}
.faq-no{
  flex:none;font-family:Inter,system-ui,sans-serif;
  font-size:13px;font-weight:700;color:var(--text-3);letter-spacing:.04em;
  min-width:26px;
}
.faq-arrow{
  margin-left:auto;flex:none;
  width:20px;height:20px;color:var(--text-3);
  transition:transform .2s var(--ease),color .2s var(--ease);
}
.faq-item[open] .faq-arrow{transform:rotate(180deg);color:var(--accent);}
.faq-item[open] summary{color:var(--text);}
.faq-a{
  padding:0 4px 22px 42px;
  font-size:15px;color:var(--text-2);line-height:1.85;
}
.faq-a a{text-decoration:underline;text-underline-offset:3px;}
.faq-empty{
  display:none;
  padding:34px 24px;text-align:center;
  border:1px dashed var(--border);border-radius:var(--r-card);
  color:var(--text-3);font-size:14.5px;
}
.faq-empty.is-visible{display:block;}

/* ============ 表单 ============ */
.form-wrap{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start;
}
.form-side h2{font-size:clamp(22px,3.2vw,30px);font-weight:700;line-height:1.3;}
.form-side p{margin-top:16px;color:var(--text-2);font-size:15.5px;}
.form-facts{margin-top:28px;display:grid;gap:14px;}
.form-facts li{
  display:flex;gap:12px;align-items:center;
  font-size:14.5px;color:var(--text-2);
}
.form-facts .mark{
  width:8px;height:8px;border-radius:2px;background:var(--primary-light);flex:none;
}
.form-card{
  background:var(--card-2);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:30px;
  box-shadow:var(--shadow-card);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;}
.field.full{grid-column:1/-1;}
.field label{font-size:14px;color:var(--text-2);margin-bottom:8px;font-weight:500;}
.req{color:var(--danger);margin-left:2px;}
.field input,.field select,.field textarea{
  width:100%;
  padding:12px 14px;
  background:#0B1120;
  border:1px solid var(--border);
  border-radius:var(--r-input);
  color:var(--text);font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:130px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(22,224,184,.15);
}
.field.invalid input,.field.invalid select,.field.invalid textarea{
  border-color:var(--danger);
  box-shadow:0 0 0 3px rgba(255,92,122,.14);
}
.err-msg{display:none;margin-top:7px;font-size:13px;color:var(--danger);}
.field.invalid .err-msg{display:block;}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:24px;}
.form-tip{font-size:13px;color:var(--text-3);}
.form-result{
  display:none;margin-top:18px;padding:14px 16px;border-radius:10px;
  font-size:14px;
  background:rgba(22,224,184,.1);border:1px solid rgba(22,224,184,.3);color:var(--accent);
}
.form-result.is-visible{display:block;}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:20px;
  padding:52px 48px;
  background:linear-gradient(135deg,rgba(47,107,255,.22),rgba(11,17,32,.9));
  border:1px solid rgba(91,140,255,.28);
  display:grid;grid-template-columns:1.4fr auto;gap:32px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(140,170,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(140,170,255,.05) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(circle at 80% 30%,rgba(0,0,0,.8),transparent 70%);
  -webkit-mask-image:radial-gradient(circle at 80% 30%,rgba(0,0,0,.8),transparent 70%);
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{font-size:clamp(22px,3vw,30px);font-weight:700;line-height:1.35;}
.cta-band p{margin-top:12px;color:var(--text-2);font-size:15.5px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;
  background:var(--bg-2);
  border-top:1px solid var(--border);
  position:relative;
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(140,170,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(140,170,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 70%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 70%);
}
.footer-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;
  padding:64px 0 40px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  color:var(--text);font-weight:700;font-size:16px;margin-bottom:16px;
}
.footer-desc{font-size:14px;color:var(--text-3);line-height:1.8;max-width:360px;}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text);margin-bottom:16px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col ul a{font-size:14px;color:var(--text-3);}
.footer-col ul a:hover{color:var(--accent);}
.footer-contact{font-size:14px;color:var(--text-3);line-height:2;}
.footer-contact b{color:var(--text-2);font-weight:600;}
.footer-bottom{
  position:relative;z-index:2;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding:20px 0 28px;
  border-top:1px solid var(--border);
  font-size:13px;color:var(--text-3);
}
.footer-bottom span{color:var(--text-3);font-family:Inter,system-ui,sans-serif;}

/* ============ 锚点定位偏移 ============ */
.anchor-target{scroll-margin-top:100px;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-inner{gap:40px;}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:30px;}
  .footer-grid > div:last-child{grid-column:1/-1;}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .page-hero{padding:88px 0 64px;}
  .entry-grid{grid-template-columns:1fr 1fr;}
  .split{grid-template-columns:1fr;gap:32px;}
  .form-wrap{grid-template-columns:1fr;gap:32px;}
  .cta-band{grid-template-columns:1fr;padding:40px 32px;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-grid > div:first-child{grid-column:1/-1;}
  .footer-grid > div:last-child{grid-column:1/-1;}
}
@media (max-width:860px){
  .nav{display:none;}
  .header-actions .btn{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:66px;}
  .site-header.is-scrolled .header-inner{height:60px;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8;}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .section--tight{padding:44px 0;}
  .page-hero{padding:72px 0 52px;}
  .hero-sub{font-size:16px;}
  .entry-grid{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;}
  .form-card{padding:22px;}
  .glass-alert{grid-template-columns:1fr;padding:24px;gap:16px;}
  .cta-band{padding:32px 22px;}
  .faq-item summary{font-size:15.5px;gap:12px;padding:18px 2px;}
  .faq-a{padding:0 2px 20px 32px;font-size:14.5px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:46px 0 30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .media-frame{aspect-ratio:16/10;}
}
@media (max-width:520px){
  .hero-title{font-size:26px;line-height:1.35;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .form-foot{flex-direction:column;align-items:stretch;}
  .form-foot .btn{width:100%;}
  .logo-text{font-size:15px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}