/* roulang page: index */
:root{
  --ink:#070B14;
  --ink-deep:#050810;
  --surface:#0E1524;
  --surface-2:#131E33;
  --line:rgba(120,180,255,.12);
  --line-strong:rgba(120,180,255,.24);
  --cyan:#22D3EE;
  --violet:#7C5CFF;
  --amber:#FFB020;
  --text:#E9F2FB;
  --body:#C8D6E8;
  --muted:#8FA3BF;
  --danger:#FF6B6B;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:10px;
  --glow-cyan:0 0 24px rgba(34,211,238,.35);
  --shadow-card:0 0 0 1px rgba(255,255,255,.04), 0 12px 32px rgba(4,10,24,.6);
  --container:1200px;
  --section-y:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink);
  color:var(--body);
  font-family:'Inter','PingFang SC','HarmonyOS Sans','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(620px 420px at 12% 4%, rgba(34,211,238,.08), transparent 65%),
    radial-gradient(720px 520px at 88% 20%, rgba(124,92,255,.06), transparent 68%);
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:
    linear-gradient(rgba(120,180,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,180,255,.05) 1px, transparent 1px);
  background-size:64px 64px;
  opacity:.9;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
input,textarea{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);line-height:1.25}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;position:relative;z-index:1}
.site-header,.site-footer,main{position:relative;z-index:1}
.num{font-variant-numeric:tabular-nums}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  border-bottom:1px solid transparent;
  transition:background .3s ease, backdrop-filter .3s ease, border-color .3s ease;
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.82);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:30px;height:30px;flex:0 0 auto;color:var(--cyan);filter:drop-shadow(0 0 8px rgba(34,211,238,.45))}
.brand-name{font-size:17px;font-weight:800;letter-spacing:-.01em;color:#F2F8FF;white-space:nowrap}
.nav-channel{display:flex;align-items:center;gap:26px;margin:0 auto}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--body);
  padding:6px 2px;transition:color .2s ease;white-space:nowrap;
}
.nav-link:hover{color:#fff}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-20px;height:2px;border-radius:2px;
  background:var(--cyan);box-shadow:0 0 12px rgba(34,211,238,.6);
}
.nav-right{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.nav-search{
  display:flex;align-items:center;gap:8px;height:38px;width:210px;padding:0 12px;
  border-radius:var(--r-sm);border:1px solid var(--line);
  background:rgba(14,21,36,.85);transition:border-color .2s ease, box-shadow .2s ease;
}
.nav-search svg{color:var(--muted);flex:0 0 auto}
.nav-search input{
  width:100%;border:0;background:transparent;outline:none;color:var(--text);
  font-size:13.5px;
}
.nav-search input::placeholder{color:#6C7F99}
.nav-search:focus-within{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(34,211,238,.16)}
.nav-ghost{
  font-size:14px;color:var(--body);padding:8px 4px;transition:color .2s ease;
  white-space:nowrap;
}
.nav-ghost:hover{color:var(--cyan)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:rgba(14,21,36,.8);color:var(--text);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 28px;border-radius:999px;border:0;cursor:pointer;
  font-size:16px;font-weight:700;letter-spacing:.01em;white-space:nowrap;
  transition:filter .25s ease, box-shadow .25s ease, transform .15s ease, border-color .25s ease, color .25s ease;
}
.btn .ic{transition:transform .2s ease}
.btn:hover .ic{transform:translateX(3px)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-primary{background:linear-gradient(12deg,#22D3EE,#7C5CFF);color:#05121B;box-shadow:var(--glow-cyan)}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 34px rgba(34,211,238,.5)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:rgba(18,28,48,.6);color:var(--text);border:1px solid var(--line-strong)}
.btn-ghost:hover{border-color:rgba(34,211,238,.6);color:#fff;box-shadow:0 0 20px rgba(34,211,238,.18)}
.btn-ghost:active{transform:translateY(1px);box-shadow:none}
.btn-amber{background:var(--amber);color:#1A1004;box-shadow:0 0 20px rgba(255,176,32,.28)}
.btn-amber:hover{filter:brightness(1.08);box-shadow:0 0 30px rgba(255,176,32,.45)}
.btn-amber:active{transform:translateY(1px);box-shadow:none}
.nav-cta{height:40px;padding:0 20px;font-size:14px}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--cyan);outline-offset:2px;
}

/* ============ 玻璃与卡片 ============ */
.glass{
  position:relative;
  background:rgba(18,28,48,.55);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-card);
}
.glass::before{
  content:"";position:absolute;left:18px;right:18px;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.55),transparent);
}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-card);
  transition:border-color .25s ease, box-shadow .25s ease, transform .25s ease;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 11px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;white-space:nowrap;
}
.badge-cyan{background:rgba(34,211,238,.12);color:#7BE8F7}
.badge-violet{background:rgba(124,92,255,.14);color:#B9A6FF}
.badge-amber{background:rgba(255,176,32,.14);color:#FFC964}
.badge-muted{background:rgba(143,163,191,.12);color:var(--muted)}

/* ============ 通用板块 ============ */
.section{padding-top:var(--section-y)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:34px;flex-wrap:wrap;
}
.section-title{font-size:28px;font-weight:700;letter-spacing:-.01em}
.section-sub{font-size:14.5px;color:var(--muted);margin-top:10px;max-width:640px}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;color:var(--cyan);
  transition:color .2s ease;
}
.link-more .arrow{transition:transform .2s ease}
.link-more:hover{color:#8DF2FF}
.link-more:hover .arrow{transform:translateX(4px)}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:56px 0 0}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.16;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 88%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 88%);
}
.hero-grid{
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
  position:relative;z-index:1;
}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:20px}
.hero-title{
  font-size:clamp(30px,3.6vw,46px);font-weight:800;letter-spacing:-.015em;line-height:1.2;
  color:#F3F8FF;
}
.hero-title .hl{
  background:linear-gradient(12deg,#22D3EE,#7C5CFF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;color:var(--body);margin-top:20px;max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.trust-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:26px;font-size:13.5px;color:var(--muted);
}
.trust-bar .dot{width:4px;height:4px;border-radius:50%;background:rgba(143,163,191,.55)}
.trust-bar b{color:var(--text);font-weight:600}
.hero-visual{position:relative}
.shot-frame{
  position:relative;aspect-ratio:16/10;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:0 0 44px rgba(34,211,238,.18), var(--shadow-card);
  background:linear-gradient(140deg,#101A2E,#0A1120 60%,#121E36);
}
.shot-frame img{width:100%;height:100%;object-fit:cover}
.float-stat{
  position:absolute;right:-14px;bottom:-20px;padding:16px 20px;border-radius:var(--r-md);
  min-width:186px;
}
.float-stat .label{font-size:12.5px;color:var(--muted)}
.float-stat .value{font-size:19px;font-weight:800;color:var(--text);margin-top:4px;letter-spacing:-.01em}
.hero-deco{
  position:absolute;right:6%;top:14%;width:220px;height:220px;opacity:.07;pointer-events:none;
  border-radius:50%;
  background:conic-gradient(from 0deg,rgba(34,211,238,.9) 0 2deg,transparent 2deg 12deg);
}

/* ============ 下载卡组 ============ */
.platform-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.platform-card{padding:26px 24px;display:flex;flex-direction:column;gap:16px;transition:transform .3s ease, border-color .3s ease}
.platform-card:hover{border-color:rgba(34,211,238,.4)}
.platform-card.is-raised{transform:translateY(-8px)}
.platform-card.is-raised:hover{transform:translateY(-10px)}
.pc-top{display:flex;align-items:center;gap:12px}
.pc-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(34,211,238,.1);color:var(--cyan);flex:0 0 auto;
}
.platform-card:nth-child(2) .pc-icon{background:rgba(124,92,255,.12);color:#B9A6FF}
.platform-card:nth-child(3) .pc-icon{background:rgba(143,163,191,.12);color:var(--muted)}
.pc-name{font-size:17px;font-weight:700;color:var(--text)}
.pc-os{font-size:13px;color:var(--muted);margin-top:2px}
.pc-specs{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line);padding-top:6px}
.pc-row{display:flex;justify-content:space-between;gap:10px;font-size:13.5px;padding:8px 0;border-bottom:1px dashed rgba(120,180,255,.1)}
.pc-row:last-child{border-bottom:0}
.pc-row span:first-child{color:var(--muted)}
.pc-row span:last-child{color:var(--text);font-weight:600}
.pc-actions{margin-top:auto;padding-top:6px}

/* ============ 轮播 ============ */
.carousel{position:relative}
.carousel-track{
  display:flex;gap:0;overflow-x:auto;scroll-snap-type:x mandatory;
  border-radius:var(--r-lg);border:1px solid var(--line-strong);
  background:#0A1120;scrollbar-width:none;
}
.carousel-track::-webkit-scrollbar{display:none}
.carousel-slide{flex:0 0 100%;scroll-snap-align:start;aspect-ratio:16/10;position:relative}
.carousel-slide img{width:100%;height:100%;object-fit:cover}
.carousel-slide .tag{
  position:absolute;left:18px;top:18px;
}
.carousel-nav{
  position:absolute;top:50%;transform:translateY(-50%);
  width:46px;height:46px;border-radius:50%;border:1px solid var(--line-strong);
  background:rgba(10,17,32,.82);color:var(--text);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:background .2s ease, border-color .2s ease, color .2s ease;
  z-index:3;
}
.carousel-nav:hover{background:rgba(34,211,238,.16);border-color:rgba(34,211,238,.55);color:#fff}
.carousel-nav.prev{left:16px}
.carousel-nav.next{right:16px}
.carousel-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:18px;flex-wrap:wrap}
.thumb-strip{display:flex;gap:12px;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}
.thumb-strip::-webkit-scrollbar{display:none}
.thumb{
  flex:0 0 auto;width:96px;aspect-ratio:16/10;border-radius:10px;overflow:hidden;
  border:1px solid var(--line);opacity:.55;cursor:pointer;background:#0A1120;
  transition:opacity .2s ease, border-color .2s ease;
}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb.is-active{opacity:1;border-color:var(--cyan);box-shadow:0 0 16px rgba(34,211,238,.3)}
.dots{display:flex;gap:8px}
.dot-btn{
  width:9px;height:9px;border-radius:50%;border:0;padding:0;cursor:pointer;
  background:rgba(143,163,191,.35);transition:background .2s ease, width .2s ease;
}
.dot-btn.is-active{background:var(--cyan);width:26px;border-radius:999px}

/* ============ Bento 特性 ============ */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:22px}
.bento-lg{grid-column:span 7;padding:28px;display:flex;flex-direction:column;gap:16px}
.bento-sm{grid-column:span 5;padding:26px;display:flex;flex-direction:column;gap:12px}
.bento-lg:hover,.bento-sm:hover{border-color:rgba(34,211,238,.35)}
.bento-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(34,211,238,.1);color:var(--cyan);
}
.bento-sm .bento-icon{background:rgba(124,92,255,.12);color:#B9A6FF}
.bento-title{font-size:20px;font-weight:700}
.bento-desc{font-size:14.5px;color:var(--muted);line-height:1.75}
.bento-figure{
  margin-top:auto;aspect-ratio:16/10;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--line);
}
.bento-figure img{width:100%;height:100%;object-fit:cover}

/* ============ 系统要求 ============ */
.req-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.req-card{padding:28px 26px}
.req-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.req-title{font-size:20px;font-weight:700}
.req-note{font-size:13px;color:var(--muted);margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.kv-row{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px dashed rgba(120,180,255,.12);font-size:14.5px}
.kv-row:last-of-type{border-bottom:0}
.kv-row .k{color:var(--muted)}
.kv-row .v{color:var(--text);font-weight:600;text-align:right}

/* ============ 评价墙 ============ */
.review-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review-col{display:flex;flex-direction:column;gap:22px}
.review-col:nth-child(2){padding-top:38px}
.review-col:nth-child(3){padding-top:16px}
.review-card{padding:22px}
.review-card:hover{border-color:rgba(34,211,238,.35);transform:translateY(-2px)}
.rv-top{display:flex;align-items:center;gap:12px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 auto;
  background:linear-gradient(140deg,rgba(34,211,238,.35),rgba(124,92,255,.45));
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;color:#EAF6FF;
}
.rv-name{font-size:14.5px;font-weight:600;color:var(--text)}
.rv-role{font-size:12.5px;color:var(--muted)}
.stars{display:flex;gap:2px;color:var(--amber);margin-top:14px}
.rv-text{font-size:14.5px;color:var(--body);margin-top:10px;line-height:1.75}
.rv-src{font-size:12.5px;color:var(--muted);margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}

/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{
  display:flex;flex-direction:column;gap:14px;padding:24px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-card);position:relative;overflow:hidden;
  transition:border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.news-card::after{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  opacity:0;transition:opacity .25s ease;
}
.news-card:hover{border-color:rgba(34,211,238,.4);transform:translateY(-3px)}
.news-card:hover::after{opacity:1}
.news-title{font-size:17px;font-weight:700;line-height:1.5}
.news-sum{
  font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.news-meta .arrow{transition:transform .2s ease;color:var(--cyan)}
.news-card:hover .news-meta .arrow{transform:translateX(4px)}
.news-empty{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:16px;
  padding:52px 24px;text-align:center;color:var(--muted);font-size:15px;
  border:1px dashed var(--line-strong);border-radius:var(--r-md);background:rgba(14,21,36,.5);
}
.news-empty .empty-icon{color:var(--cyan);opacity:.65}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:920px;margin:0 auto}
.faq-item{
  border:1px solid var(--line);border-radius:14px;background:var(--surface);
  overflow:hidden;transition:border-color .25s ease, background .25s ease;
}
.faq-item:hover{border-color:rgba(34,211,238,.3)}
.faq-item.is-open{border-color:rgba(34,211,238,.42);background:var(--surface-2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;background:none;border:0;cursor:pointer;text-align:left;
  color:var(--text);font-size:16px;font-weight:600;line-height:1.5;
}
.faq-icon{flex:0 0 auto;color:var(--cyan);transition:transform .3s ease}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{
  border-left:2px solid var(--cyan);margin:0 22px 20px;padding-left:14px;
  font-size:14.5px;color:var(--muted);line-height:1.8;
}

/* ============ 底部 CTA ============ */
.cta-band{
  margin-top:var(--section-y);
  padding:40px 40px;border-radius:var(--r-lg);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band .deco-line{
  position:absolute;left:0;right:0;bottom:0;height:1px;opacity:.35;
  background:repeating-linear-gradient(90deg,rgba(34,211,238,.8) 0 14px,transparent 14px 30px);
}
.cta-title{font-size:26px;font-weight:700}
.cta-desc{font-size:14.5px;color:var(--muted);margin-top:10px;max-width:520px}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-deep);margin-top:var(--section-y);position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.5),rgba(124,92,255,.4),transparent);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;
  padding:64px 0 40px;
}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-desc{font-size:14px;color:var(--muted);line-height:1.8;max-width:300px}
.footer-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.02em}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-link{font-size:14px;color:var(--muted);transition:color .2s ease}
.footer-link:hover{color:var(--cyan)}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--muted)}
.qr-box{
  width:96px;height:96px;border-radius:12px;border:1px solid var(--line);
  background:
    repeating-linear-gradient(45deg,rgba(120,180,255,.09) 0 6px,transparent 6px 12px),
    rgba(14,21,36,.9);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:11.5px;color:var(--muted);padding:8px;line-height:1.4;
}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 30px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}
.footer-bottom .fb-links{display:flex;gap:18px;flex-wrap:wrap}

/* ============ 移动端抽屉 ============ */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;z-index:120;
  background:rgba(8,13,24,.98);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .32s ease;
  padding:22px 22px 32px;display:flex;flex-direction:column;gap:8px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,6,12,.6);z-index:110;
  opacity:0;pointer-events:none;transition:opacity .3s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  background:transparent;color:var(--text);cursor:pointer;
}
.drawer-link{
  padding:14px 4px;border-bottom:1px solid var(--line);color:var(--body);
  font-size:15.5px;font-weight:500;transition:color .2s ease;
}
.drawer-link:hover,.drawer-link.is-active{color:var(--cyan)}
.drawer-cta{margin-top:auto}

/* ============ 入场动画 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease, transform .4s ease}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-grid{gap:40px}
}
@media (max-width:1023px){
  .nav-channel,.nav-search,.nav-ghost,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .nav-inner{height:64px;justify-content:space-between}
  .hero{padding-top:40px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-sub{max-width:100%}
  .float-stat{right:12px;bottom:-16px}
  .platform-grid{grid-template-columns:1fr;gap:20px}
  .platform-card.is-raised{transform:none}
  .platform-card.is-raised:hover{transform:translateY(-2px)}
  .bento-lg,.bento-sm{grid-column:span 12}
  .req-grid{grid-template-columns:1fr}
  .review-wall{grid-template-columns:1fr 1fr}
  .review-col:nth-child(2),.review-col:nth-child(3){padding-top:0}
  .news-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:32px 28px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  :root{--section-y:56px}
  .section-title{font-size:24px}
  .hero-title{font-size:clamp(26px,7vw,32px)}
  .review-wall{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .btn{height:48px;padding:0 22px;font-size:15px}
  .cta-title{font-size:22px}
  .float-stat{position:static;margin-top:16px;width:100%}
}
@media (max-width:519px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .trust-bar{font-size:12.5px}
}

/* roulang page: article */
:root{
  --bg:#070B14;
  --bg-deep:#050810;
  --surface:#0E1524;
  --glass:rgba(18,28,48,.55);
  --line:rgba(120,180,255,.12);
  --line-strong:rgba(120,180,255,.22);
  --cyan:#22D3EE;
  --purple:#7C5CFF;
  --amber:#FFB020;
  --white:#F2F7FF;
  --text:#E6EEF9;
  --body-text:#C8D6E8;
  --muted:#8FA3BF;
  --dim:#5E7188;
  --r-lg:20px;
  --r:16px;
  --r-sm:10px;
  --shadow-card:0 0 0 1px rgba(255,255,255,.04), 0 12px 32px rgba(4,10,24,.6);
  --glow-cyan:0 0 24px rgba(34,211,238,.35);
  --glow-cyan-lg:0 0 34px rgba(34,211,238,.45);
  --glow-amber:0 0 20px rgba(255,176,32,.28);
  --maxw:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 620px at 10% -10%, rgba(34,211,238,.08), transparent 62%),
    radial-gradient(820px 560px at 92% 2%, rgba(124,92,255,.06), transparent 64%);
  background-attachment:fixed;
  background-repeat:no-repeat;
  color:var(--body-text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(120,180,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,180,255,.05) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(90% 62% at 50% 12%, #000 20%, transparent 100%);
  mask-image:radial-gradient(90% 62% at 50% 12%, #000 20%, transparent 100%);
  opacity:.75;
}
img{max-width:100%;display:block;border:0}
a{color:var(--cyan);text-decoration:none}
button,input,textarea,select{font-family:inherit;font-size:inherit}
button{cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}

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

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  border-bottom:1px solid transparent;
  transition:background-color .3s ease, backdrop-filter .3s ease, border-color .3s ease;
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.82);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:18px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--text);
  font-weight:800;
  font-size:18px;
  letter-spacing:-.01em;
}
.brand-mark{
  width:30px;
  height:30px;
  flex:0 0 auto;
  color:var(--cyan);
  filter:drop-shadow(0 0 8px rgba(34,211,238,.4));
}
.brand-name{white-space:nowrap}
.nav-channel{
  display:none;
  align-items:center;
  gap:4px;
  margin-right:auto;
}
@media (min-width:1024px){
  .nav-channel{display:flex}
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  border-radius:var(--r-sm);
  color:var(--muted);
  font-size:15px;
  line-height:1.5;
  text-decoration:none;
  transition:color .2s ease, background-color .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(120,180,255,.06)}
.nav-link:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.nav-link.is-active{color:#fff}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:-2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--purple));
}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.search-box{display:none}
@media (min-width:1280px){
  .search-box{display:block}
}
.search-box input{
  width:200px;
  height:38px;
  padding:0 14px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:rgba(14,21,36,.9);
  color:var(--text);
  font-size:14px;
  outline:none;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.search-box input::placeholder{color:#5E7188}
.search-box input:focus{
  border-color:var(--cyan);
  box-shadow:0 0 0 3px rgba(34,211,238,.18);
}
.btn-text{
  display:none;
  padding:8px 6px;
  color:var(--muted);
  font-size:14px;
  transition:color .2s ease;
}
@media (min-width:1024px){
  .btn-text{display:inline-block}
}
.btn-text:hover{color:var(--cyan)}
.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:38px;
  padding:0 18px;
  border-radius:999px;
  background:var(--amber);
  color:#1A1204;
  font-size:14px;
  font-weight:700;
  white-space:nowrap;
  box-shadow:var(--glow-amber);
  transition:filter .2s ease, box-shadow .2s ease, transform .12s ease;
}
.nav-cta:hover{filter:brightness(1.08);box-shadow:0 0 28px rgba(255,176,32,.45)}
.nav-cta:active{transform:translateY(1px);box-shadow:none}
.nav-cta:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.nav-toggle{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:rgba(120,180,255,.08);
  color:var(--text);
  transition:border-color .2s ease, background-color .2s ease;
}
.nav-toggle:hover{border-color:rgba(34,211,238,.5)}
.nav-toggle:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.nav-toggle svg{width:20px;height:20px}
@media (min-width:1024px){
  .nav-toggle{display:none}
}

/* 抽屉 */
.drawer-mask{
  position:fixed;
  inset:0;
  z-index:60;
  background:rgba(4,8,16,.62);
  -webkit-backdrop-filter:blur(4px);
  backdrop-filter:blur(4px);
  opacity:0;
  visibility:hidden;
  transition:opacity .3s ease, visibility .3s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;
  top:0;
  right:0;
  z-index:70;
  display:flex;
  flex-direction:column;
  gap:6px;
  width:290px;
  max-width:86vw;
  height:100%;
  padding:22px;
  background:#0A1120;
  border-left:1px solid var(--line);
  transform:translateX(102%);
  transition:transform .32s cubic-bezier(.4,.2,.2,1);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:14px;
}
.drawer-close{
  width:36px;
  height:36px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:rgba(120,180,255,.08);
  color:var(--text);
}
.drawer-close svg{width:18px;height:18px}
.drawer .nav-link{
  padding:13px 12px;
  font-size:16px;
  border-radius:12px;
  border-bottom:1px solid rgba(120,180,255,.08);
}
.drawer .nav-link.is-active::after{display:none}
.drawer .nav-cta{margin-top:auto;height:44px}

/* ============ 通用按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:filter .2s ease, box-shadow .2s ease, transform .12s ease, border-color .2s ease, color .2s ease;
}
.btn svg{width:16px;height:16px;transition:transform .2s ease}
.btn:hover svg{transform:translateX(3px)}
.btn-primary{
  background:linear-gradient(12deg,var(--cyan),var(--purple));
  color:#04101C;
  box-shadow:var(--glow-cyan);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:var(--glow-cyan-lg)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-primary:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.btn-amber{
  background:var(--amber);
  color:#1A1204;
  box-shadow:var(--glow-amber);
}
.btn-amber:hover{filter:brightness(1.08);box-shadow:0 0 28px rgba(255,176,32,.45)}
.btn-amber:active{transform:translateY(1px);box-shadow:none}
.btn-amber:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.btn-ghost{
  background:rgba(18,28,48,.6);
  border-color:var(--line);
  color:var(--text);
}
.btn-ghost:hover{border-color:rgba(34,211,238,.5);color:#fff;box-shadow:0 0 20px rgba(34,211,238,.18)}
.btn-ghost:active{transform:translateY(1px)}
.btn-ghost:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}

/* ============ 主体 ============ */
main{position:relative;z-index:1;display:block}

/* 面包屑 */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:28px 0 0;
  font-size:13px;
  line-height:1.6;
  color:var(--muted);
}
.crumbs a{
  color:var(--muted);
  transition:color .2s ease;
}
.crumbs a:hover{color:var(--cyan)}
.crumbs .sep{color:#3D4E66}
.crumbs .current{
  max-width:260px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  color:#9FB4CE;
}
@media (min-width:768px){
  .crumbs .current{max-width:420px}
}

.article-wrap{
  width:100%;
  max-width:760px;
  margin:0 auto;
  padding-bottom:8px;
}

/* 文章头部 */
.article-head{
  padding:22px 0 30px;
  margin-bottom:34px;
  border-bottom:1px solid var(--line);
}
.tag-badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  border:1px solid rgba(34,211,238,.22);
  background:rgba(34,211,238,.12);
  color:var(--cyan);
  font-size:13px;
  font-weight:600;
  line-height:1;
}
.article-title{
  margin:16px 0 0;
  font-size:30px;
  line-height:1.35;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--white);
  overflow-wrap:anywhere;
  word-break:break-word;
}
@media (min-width:768px){
  .article-title{font-size:40px}
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 14px;
  margin-top:18px;
  font-size:13.5px;
  line-height:1.6;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.meta-row strong{color:#A9BDD6;font-weight:600}
.meta-dot{
  width:3px;
  height:3px;
  border-radius:50%;
  background:#3D4E66;
  flex:0 0 auto;
}

/* ============ 正文排版 ============ */
.article-body{
  font-size:17px;
  line-height:1.85;
  color:var(--body-text);
  overflow-wrap:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  position:relative;
  margin:46px 0 18px;
  padding-left:16px;
  font-size:25px;
  line-height:1.4;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--white);
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.2em;
  bottom:.2em;
  width:3px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--cyan),var(--purple));
}
.article-body h3{
  margin:34px 0 14px;
  font-size:20px;
  font-weight:600;
  line-height:1.5;
  color:#E9F1FB;
}
.article-body h4{
  margin:26px 0 12px;
  font-size:17px;
  font-weight:600;
  color:#E4EEFB;
}
.article-body p{margin:0 0 18px}
.article-body strong{color:#E4F3FF;font-weight:700}
.article-body em{color:#A9E6F2;font-style:normal}
.article-body a{
  color:var(--cyan);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease, color .2s ease;
}
.article-body a:hover{border-bottom-color:var(--cyan);color:#7BE7F7}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:24px}
.article-body li{margin:8px 0}
.article-body li > ul,.article-body li > ol{margin:8px 0 0}
.article-body ul li::marker{color:var(--cyan)}
.article-body ol li::marker{color:var(--cyan);font-variant-numeric:tabular-nums}
.article-body blockquote{
  margin:0 0 20px;
  padding:16px 20px;
  border-left:3px solid var(--cyan);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  background:rgba(34,211,238,.06);
  color:#D3E1F2;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body code{
  padding:2px 6px;
  border-radius:6px;
  border:1px solid var(--line);
  background:rgba(120,180,255,.1);
  color:#A8E8F5;
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  font-size:.9em;
  font-variant-numeric:tabular-nums;
}
.article-body pre{
  margin:0 0 20px;
  padding:18px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:#0A1020;
  overflow-x:auto;
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  font-size:14px;
  line-height:1.7;
  color:#C8D6E8;
  font-variant-numeric:tabular-nums;
}
.article-body pre code{
  padding:0;
  border:0;
  background:none;
  color:inherit;
  font-size:inherit;
}
.article-body img{
  height:auto;
  margin:26px auto;
  border-radius:12px;
  border:1px solid var(--line);
}
.article-body figure{margin:26px 0}
.article-body figure img{margin:0 auto}
.article-body figcaption{
  margin-top:10px;
  text-align:center;
  font-size:13.5px;
  color:var(--muted);
}
.article-body table{
  width:100%;
  min-width:520px;
  border-collapse:collapse;
  font-size:15px;
  line-height:1.7;
}
.article-body .table-wrap,
.article-body > table{
  margin:0 0 20px;
}
.article-body > table{display:block;overflow-x:auto}
.article-body .table-wrap{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
}
.article-body th,.article-body td{
  padding:11px 14px;
  border-bottom:1px solid var(--line);
  text-align:left;
  vertical-align:top;
}
.article-body th{
  background:rgba(120,180,255,.06);
  color:#E9F1FB;
  font-weight:600;
  white-space:nowrap;
}
.article-body tr:last-child td{border-bottom:0}
.article-body hr{
  margin:38px 0;
  border:0;
  border-top:1px solid var(--line);
}

/* 下载引导卡 */
.dl-card{
  position:relative;
  margin-top:48px;
  padding:28px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.dl-card::before{
  content:"";
  position:absolute;
  top:0;
  left:24px;
  right:24px;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.7),rgba(124,92,255,.5),transparent);
}
.dl-card-inner{
  display:flex;
  flex-direction:column;
  gap:20px;
}
@media (min-width:768px){
  .dl-card-inner{
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    gap:24px;
  }
}
.dl-title{
  font-size:20px;
  font-weight:700;
  color:var(--white);
  letter-spacing:-.01em;
}
.dl-desc{
  margin-top:8px;
  font-size:14.5px;
  line-height:1.75;
  color:var(--muted);
}
.dl-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  flex:0 0 auto;
}
.dl-actions .btn{padding:0 20px}

/* 空状态 */
.empty-state{
  padding:72px 24px;
  text-align:center;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--shadow-card);
}
.empty-state .empty-icon{
  width:54px;
  height:54px;
  margin:0 auto 20px;
  color:var(--cyan);
  opacity:.75;
}
.empty-state h2{
  font-size:22px;
  font-weight:700;
  color:var(--white);
}
.empty-state p{
  margin:12px auto 24px;
  max-width:440px;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
}

/* 尾部返回 */
.back-row{
  margin-top:40px;
  text-align:center;
}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--cyan);
  transition:color .2s ease;
}
.link-arrow svg{width:16px;height:16px;transition:transform .25s ease}
.link-arrow:hover{color:#7BE7F7}
.link-arrow:hover svg{transform:translateX(4px)}
.link-arrow:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

/* 装饰分隔线 */
.article-divider{
  margin:44px 0 0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--line-strong),transparent);
}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:96px;
  background:var(--bg-deep);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.5),rgba(124,92,255,.4),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:34px;
  padding:56px 0 36px;
}
@media (min-width:768px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.footer-brand .brand-mark{width:26px;height:26px}
.footer-brand .brand-name{
  font-size:17px;
  font-weight:800;
  color:var(--text);
}
.footer-desc{
  font-size:14px;
  line-height:1.75;
  color:var(--muted);
}
.footer-title{
  margin-bottom:14px;
  font-size:15px;
  font-weight:700;
  color:#E4EEFB;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-link{
  font-size:14px;
  color:var(--muted);
  transition:color .2s ease;
}
.footer-link:hover{color:var(--cyan)}
.footer-link:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px}
.footer-contact{
  display:flex;
  flex-direction:column;
  gap:10px;
  font-size:14px;
  line-height:1.7;
  color:var(--muted);
}
.qr-box{
  width:92px;
  height:92px;
  margin-top:4px;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  font-size:12px;
  line-height:1.5;
  color:#6C819C;
  border:1px dashed rgba(120,180,255,.25);
  border-radius:12px;
  background:rgba(120,180,255,.04);
}
.footer-bottom{
  display:flex;
  flex-direction:column;
  gap:14px;
  padding:20px 0 32px;
  border-top:1px solid rgba(120,180,255,.1);
  font-size:13px;
  color:#6C819C;
  font-variant-numeric:tabular-nums;
}
@media (min-width:768px){
  .footer-bottom{
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
  }
}
.fb-links{
  display:flex;
  flex-wrap:wrap;
  gap:18px;
}

/* 入场上浮 */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .4s ease, transform .4s ease;
}
.reveal.is-visible{
  opacity:1;
  transform:none;
}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none}
}

:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}

/* roulang page: category1 */
:root{
  --bg:#070B14;
  --bg-deep:#050810;
  --surface:#0E1524;
  --surface-2:#121A2C;
  --glass:rgba(18,28,48,.55);
  --line:rgba(120,180,255,.12);
  --line-strong:rgba(120,180,255,.24);
  --brand:#22D3EE;
  --brand-soft:rgba(34,211,238,.12);
  --violet:#7C5CFF;
  --violet-soft:rgba(124,92,255,.12);
  --amber:#FFB020;
  --amber-soft:rgba(255,176,32,.12);
  --text:#E6EEF9;
  --text-strong:#F2F7FF;
  --body-c:#C8D6E8;
  --muted:#8FA3BF;
  --dim:#6B7C96;
  --r-xl:20px;
  --r-md:16px;
  --r-sm:10px;
  --shadow-card:0 0 0 1px rgba(255,255,255,.04), 0 12px 32px rgba(4,10,24,.6);
  --glow-brand:0 0 24px rgba(34,211,238,.35);
  --sec-gap:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html body{
  margin:0;
  padding-top:72px;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--body-c);
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 620px at 10% -6%, rgba(34,211,238,.08), transparent 62%),
    radial-gradient(820px 600px at 90% 6%, rgba(124,92,255,.06), transparent 64%),
    linear-gradient(rgba(120,180,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,180,255,.05) 1px, transparent 1px);
  background-size:auto, auto, 64px 64px, 64px 64px;
  background-attachment:fixed, fixed, fixed, fixed;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{list-style:none;margin:0;padding:0}
p{margin:0}
h1,h2,h3,h4{margin:0;color:var(--text-strong);line-height:1.35}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
::selection{background:rgba(34,211,238,.3);color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:56px 0 0}
.mono{font-variant-numeric:tabular-nums}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  border-bottom:1px solid transparent;
  transition:background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:30px;height:30px;color:var(--brand);flex:none}
.brand-name{font-size:18px;font-weight:800;color:var(--text-strong);letter-spacing:.01em}
.nav-channel{display:flex;align-items:center;gap:26px;margin-left:6px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:72px;
  font-size:15px;color:var(--muted);transition:color .25s ease;
}
.nav-link:hover{color:var(--text-strong)}
.nav-link.is-active{color:var(--text-strong);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(34,211,238,.6);
}
.nav-aside{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-search{
  display:flex;align-items:center;gap:8px;height:40px;width:210px;padding:0 12px;
  background:rgba(14,21,36,.9);border:1px solid var(--line);border-radius:var(--r-sm);
  transition:border-color .25s ease, box-shadow .25s ease;
}
.nav-search svg{width:16px;height:16px;flex:none;color:var(--muted);stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round}
.nav-search input{width:100%;border:0;background:transparent;outline:none;font-size:14px;color:var(--text)}
.nav-search input::placeholder{color:var(--dim)}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(34,211,238,.18)}
.btn-ghost{font-size:14px;color:var(--muted);padding:9px 4px;transition:color .25s ease}
.btn-ghost:hover{color:var(--brand)}
.btn-amber{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  min-height:40px;padding:0 20px;border-radius:999px;
  background:var(--amber);color:#231603;font-size:14px;font-weight:700;
  box-shadow:0 0 20px rgba(255,176,32,.28);
  transition:filter .25s ease, box-shadow .25s ease, transform .15s ease;
}
.btn-amber:hover{filter:brightness(1.06);box-shadow:0 0 28px rgba(255,176,32,.46)}
.btn-amber:active{transform:scale(.99);box-shadow:none}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:11px;border:1px solid var(--line);border-radius:12px;
  background:rgba(14,21,36,.9);
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--text-strong);transition:transform .25s ease, opacity .25s ease}
.nav-toggle:hover{border-color:var(--line-strong)}

.nav-drawer{
  position:fixed;top:0;right:0;z-index:80;width:288px;height:100%;
  padding:24px 20px;display:flex;flex-direction:column;gap:6px;
  background:rgba(8,13,24,.98);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .32s ease;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;gap:10px;padding-bottom:18px;margin-bottom:8px;border-bottom:1px solid var(--line)}
.drawer-link{
  display:flex;align-items:center;min-height:46px;padding:0 12px;border-radius:var(--r-sm);
  font-size:15px;color:var(--muted);transition:background .2s ease, color .2s ease;
}
.drawer-link:hover{color:var(--text-strong);background:rgba(34,211,238,.07)}
.drawer-link.is-active{color:var(--text-strong);background:rgba(34,211,238,.12);font-weight:600}
.drawer-cta{display:flex;justify-content:center;margin-top:auto;min-height:46px}
.drawer-mask{
  position:fixed;inset:0;z-index:70;background:rgba(3,6,14,.62);
  opacity:0;visibility:hidden;transition:opacity .3s ease, visibility .3s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ============ 通用组件 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;
  background:var(--brand-soft);color:var(--brand);border:1px solid rgba(34,211,238,.25);
  font-variant-numeric:tabular-nums;
}
.badge-violet{background:var(--violet-soft);color:#B4A4FF;border-color:rgba(124,92,255,.3)}
.badge-amber{background:var(--amber-soft);color:var(--amber);border-color:rgba(255,176,32,.3)}
.badge-muted{background:rgba(143,163,191,.12);color:var(--muted);border-color:rgba(143,163,191,.22)}

.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:999px;
  background:linear-gradient(12deg,var(--brand),var(--violet));
  color:#04121A;font-size:15px;font-weight:800;letter-spacing:.01em;
  box-shadow:var(--glow-brand);
  transition:filter .25s ease, box-shadow .25s ease, transform .15s ease;
}
.btn-primary .arrow{transition:transform .25s ease}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 34px rgba(34,211,238,.5)}
.btn-primary:hover .arrow{transform:translateX(3px)}
.btn-primary:active{transform:scale(.99);box-shadow:none}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:999px;
  border:1px solid var(--line-strong);color:var(--text-strong);font-size:15px;font-weight:600;
  background:rgba(14,21,36,.6);
  transition:border-color .25s ease, background .25s ease, box-shadow .25s ease;
}
.btn-outline:hover{border-color:var(--brand);background:rgba(34,211,238,.08);box-shadow:0 0 20px rgba(34,211,238,.2)}
.btn-outline:active{transform:scale(.99)}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
  transition:color .2s ease;
}
.link-more .arrow{transition:transform .25s ease}
.link-more:hover .arrow{transform:translateX(4px)}

.block{padding-bottom:64px}
.block-head{margin-bottom:26px}
.block-title{font-size:26px;font-weight:700;color:var(--text-strong);letter-spacing:-.01em}
.block-sub{margin-top:8px;font-size:15px;color:var(--muted);max-width:760px}
.group-head{display:flex;align-items:baseline;gap:12px;margin:34px 0 10px}
.group-head h3{font-size:19px;font-weight:600;color:var(--text-strong)}
.group-head .group-note{font-size:13px;color:var(--dim)}

/* ============ 顶部横幅 ============ */
.page-banner{padding:36px 0 0}
.banner-grid{
  display:grid;grid-template-columns:minmax(0,1.18fr) minmax(0,.82fr);
  gap:36px;align-items:center;
  min-height:240px;padding:30px 32px;
  border:1px solid var(--line);border-radius:var(--r-xl);
  background:
    radial-gradient(600px 320px at 6% 0%, rgba(34,211,238,.10), transparent 62%),
    linear-gradient(140deg, rgba(18,28,48,.86), rgba(10,16,30,.78));
  box-shadow:var(--shadow-card);
  position:relative;overflow:hidden;
}
.banner-grid::after{
  content:"";position:absolute;right:-40px;bottom:-60px;width:240px;height:240px;
  border:1px solid rgba(34,211,238,.14);border-radius:50%;
  -webkit-mask-image:linear-gradient(120deg,#000,transparent 70%);
  mask-image:linear-gradient(120deg,#000,transparent 70%);
  opacity:.5;pointer-events:none;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--dim);margin-bottom:14px}
.breadcrumb a{color:var(--muted);transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(143,163,191,.5)}
.breadcrumb .current{color:var(--body-c)}
.banner-title{font-size:40px;font-weight:800;letter-spacing:-.01em;line-height:1.25}
.banner-sub{margin-top:12px;font-size:16px;color:var(--muted);max-width:560px}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.banner-media{
  aspect-ratio:16/10;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--line-strong);position:relative;
  box-shadow:0 0 30px rgba(34,211,238,.18);
}
.banner-media img{width:100%;height:100%;object-fit:cover}
.banner-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(7,11,20,0) 40%, rgba(7,11,20,.5));
}

/* ============ 主布局 ============ */
.layout-split{display:grid;grid-template-columns:222px minmax(0,1fr);gap:48px;align-items:start}
.anchor-card{
  position:sticky;top:100px;
  padding:16px;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--surface);box-shadow:var(--shadow-card);
}
.anchor-title{font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--dim);margin-bottom:10px;padding-left:12px}
.anchor-link{
  display:block;padding:9px 12px;border-radius:var(--r-sm);
  border-left:2px solid transparent;
  font-size:14px;color:var(--muted);
  transition:color .2s ease, background .2s ease, border-color .2s ease;
}
.anchor-link:hover{color:var(--text-strong);background:rgba(34,211,238,.07)}
.anchor-link.is-active{color:var(--text-strong);background:rgba(34,211,238,.1);border-left-color:var(--brand)}

section[id]{scroll-margin-top:96px}

/* ============ 行卡分组列表 ============ */
.row-list{border-top:1px solid var(--line)}
.row-item{
  display:flex;align-items:center;gap:18px;
  padding:19px 6px;border-bottom:1px solid var(--line);
  transition:background .25s ease, padding .25s ease, border-color .25s ease;
}
.row-item:hover{background:rgba(34,211,238,.05);padding-left:14px;border-bottom-color:var(--line-strong)}
.row-index{
  flex:none;min-width:34px;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand);font-variant-numeric:tabular-nums;
}
.row-body{flex:1;min-width:0}
.row-title{display:block;font-size:16px;font-weight:600;color:var(--text-strong)}
.row-desc{display:block;margin-top:4px;font-size:14px;color:var(--muted);line-height:1.7}
.row-arrow{flex:none;font-size:18px;color:var(--dim);transition:transform .25s ease, color .25s ease}
.row-item:hover .row-arrow{transform:translateX(4px);color:var(--brand)}

/* ============ 上手流程 ============ */
.step-flow{
  display:flex;border:1px solid var(--line);border-radius:var(--r-xl);
  background:var(--surface);box-shadow:var(--shadow-card);overflow:hidden;
}
.step{flex:1;padding:24px 22px;border-right:1px solid var(--line);transition:background .25s ease}
.step:last-child{border-right:0}
.step:hover{background:rgba(34,211,238,.05)}
.step-no{font-size:13px;font-weight:800;color:var(--brand);letter-spacing:.1em;font-variant-numeric:tabular-nums}
.step-title{margin-top:10px;font-size:16px;font-weight:600;color:var(--text-strong)}
.step-desc{margin-top:8px;font-size:13.5px;color:var(--muted);line-height:1.75}

/* ============ 操作要点 ============ */
.tips-grid{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:28px;align-items:start}
.tip-media{
  aspect-ratio:16/10;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--line);position:relative;background:var(--surface);
}
.tip-media img{width:100%;height:100%;object-fit:cover}
.tip-media .media-tag{
  position:absolute;left:14px;bottom:14px;
  padding:4px 10px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(7,11,20,.66);border:1px solid var(--line-strong);color:var(--body-c);
  backdrop-filter:blur(8px);
}
.tip-cards{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.tip-card{
  padding:20px;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--surface);box-shadow:var(--shadow-card);
  transition:border-color .25s ease, transform .25s ease;
}
.tip-card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.tip-card h4{font-size:16px;font-weight:600;color:var(--text-strong);margin-bottom:8px}
.tip-card p{font-size:13.5px;color:var(--muted);line-height:1.75}

/* ============ 版本兼容 ============ */
.kv-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.kv-card{
  padding:24px;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--surface);box-shadow:var(--shadow-card);
}
.kv-card.is-rec{border-color:rgba(34,211,238,.28);background:linear-gradient(160deg, rgba(34,211,238,.07), rgba(14,21,36,.9))}
.kv-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
.kv-head h3{font-size:17px;font-weight:700;color:var(--text-strong)}
.kv-row{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14px}
.kv-row:last-child{border-bottom:0}
.kv-key{color:var(--muted)}
.kv-val{color:var(--text-strong);font-weight:600;text-align:right;font-variant-numeric:tabular-nums}
.kv-note{margin-top:18px;font-size:13.5px;color:var(--dim)}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:880px}
.faq-item{
  border:1px solid var(--line);border-radius:14px;background:var(--surface);
  transition:border-color .25s ease, background .25s ease;
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item.is-open{border-color:rgba(34,211,238,.3);background:linear-gradient(140deg, rgba(34,211,238,.06), rgba(14,21,36,.95))}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--text-strong);
}
.faq-icon{flex:none;width:22px;height:22px;color:var(--brand);transition:transform .3s ease}
.faq-icon svg{width:100%;height:100%;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{
  margin:0 20px 20px 22px;padding-left:16px;border-left:2px solid var(--brand);
  font-size:14.5px;color:var(--muted);line-height:1.85;
}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:26px;
  padding:36px 40px;border:1px solid var(--line);border-radius:var(--r-xl);
  background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg, transparent, rgba(34,211,238,.65), rgba(124,92,255,.45), transparent);
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:10px;
  background-image:repeating-linear-gradient(90deg, rgba(120,180,255,.28) 0 1px, transparent 1px 22px);
  opacity:.35;pointer-events:none;
}
.cta-copy h2{font-size:26px;font-weight:800;color:var(--text-strong);letter-spacing:-.01em}
.cta-copy p{margin-top:8px;font-size:14.5px;color:var(--muted)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;margin-top:96px;background:var(--bg-deep);border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg, transparent, rgba(34,211,238,.55), rgba(124,92,255,.4), transparent);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand .brand-mark{width:28px;height:28px}
.footer-brand .brand-name{font-size:17px}
.footer-desc{font-size:14px;color:var(--muted);line-height:1.8}
.footer-title{font-size:14px;font-weight:700;color:var(--text-strong);margin-bottom:16px;letter-spacing:.02em}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-link{font-size:14px;color:var(--muted);transition:color .2s ease}
.footer-link:hover{color:var(--brand)}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--muted)}
.qr-box{
  width:96px;height:96px;margin-top:6px;display:flex;align-items:center;justify-content:center;
  text-align:center;font-size:12px;line-height:1.6;color:var(--dim);
  border:1px dashed var(--line-strong);border-radius:12px;background:rgba(14,21,36,.7);
}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;
  padding:20px 0 32px;border-top:1px solid var(--line);font-size:13px;color:var(--dim);
}
.fb-links{display:flex;flex-wrap:wrap;gap:18px}

/* ============ 动效 ============ */
.has-js .reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease, transform .4s ease}
.has-js .reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .has-js .reveal{opacity:1;transform:none;transition:none}
  *{transition-duration:.001ms !important}
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .nav-search{width:170px}
}
@media (max-width:1023px){
  .nav-channel,.nav-search,.btn-ghost{display:none}
  .nav-toggle{display:flex}
  .banner-grid{grid-template-columns:1fr;gap:26px;padding:26px}
  .banner-title{font-size:32px}
  .layout-split{grid-template-columns:1fr;gap:26px}
  .anchor-card{position:static;padding:12px}
  .anchor-title{padding-left:6px}
  .anchor-list{display:flex;gap:8px;overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:4px}
  .anchor-link{white-space:nowrap;border-left:0;border-bottom:2px solid transparent;border-radius:10px}
  .anchor-link.is-active{border-left-color:transparent;border-bottom-color:var(--brand);background:rgba(34,211,238,.1)}
  .step-flow{flex-direction:column}
  .step{border-right:0;border-bottom:1px solid var(--line)}
  .step:last-child{border-bottom:0}
  .tips-grid{grid-template-columns:1fr;gap:22px}
  .kv-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px}
}
@media (max-width:640px){
  html body{padding-top:64px}
  .nav-inner{height:64px;gap:12px}
  .brand-name{font-size:17px}
  .container{padding:0 20px}
  .section{padding:36px 0 0}
  .block{padding-bottom:44px}
  .page-banner{padding:22px 0 0}
  .banner-title{font-size:27px}
  .banner-sub{font-size:15px}
  .block-title{font-size:22px}
  .step{padding:20px 18px}
  .tip-cards{grid-template-columns:1fr}
  .row-item{gap:12px;padding:17px 4px}
  .row-item:hover{padding-left:8px}
  .row-arrow{display:none}
  .cta-band{padding:26px 22px}
  .cta-copy h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn-primary,.cta-actions .btn-outline{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category2 */
:root{
  --bg:#070B14;
  --bg-deep:#050810;
  --surface:#0E1524;
  --surface-2:#101A2C;
  --glass:rgba(18,28,48,.55);
  --line:rgba(120,180,255,.12);
  --line-strong:rgba(120,180,255,.28);
  --brand:#22D3EE;
  --brand-2:#7C5CFF;
  --amber:#FFB020;
  --text:#E8F0FA;
  --text-2:#C8D6E8;
  --muted:#8FA3BF;
  --danger:#FF6B6B;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:10px;
  --shadow-card:0 0 0 1px rgba(255,255,255,.04),0 12px 32px rgba(4,10,24,.6);
  --glow-brand:0 0 24px rgba(34,211,238,.35);
  --sec-y:96px;
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{background:var(--bg);scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:transparent;
  color:var(--text-2);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-color:var(--bg);
  background-image:
    radial-gradient(620px 440px at 10% -8%, rgba(34,211,238,.08), transparent 70%),
    radial-gradient(560px 420px at 92% 4%, rgba(124,92,255,.06), transparent 72%),
    linear-gradient(rgba(140,190,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,190,255,.05) 1px, transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.01em;line-height:1.35}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  border-bottom:1px solid transparent;
  background:transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:30px;height:30px;color:var(--brand);flex:0 0 auto}
.brand-name{font-size:18px;font-weight:800;color:#fff;letter-spacing:-.01em;white-space:nowrap}
.nav-channel{display:flex;align-items:center;gap:4px;margin:0 auto}
.nav-link{position:relative;padding:8px 12px;font-size:15px;color:var(--muted);border-radius:8px;white-space:nowrap;transition:color .2s ease,background .2s ease}
.nav-link:hover{color:var(--text);background:rgba(120,180,255,.06)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--brand-2))}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-search{display:flex;align-items:center;gap:8px;width:180px;padding:8px 12px;border:1px solid var(--line);border-radius:10px;background:rgba(14,21,36,.7);transition:border-color .2s ease,box-shadow .2s ease}
.nav-search svg{width:16px;height:16px;color:var(--muted);flex:0 0 auto}
.nav-search input{width:100%;border:0;background:none;outline:none;font-size:14px;color:var(--text)}
.nav-search input::placeholder{color:#6F86A6}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(34,211,238,.18)}
.nav-burger{display:none;width:44px;height:44px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:10px;color:var(--text)}
.nav-burger:hover{border-color:var(--line-strong)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:12px;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:box-shadow .25s ease,filter .25s ease,transform .15s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn svg{width:16px;height:16px;transition:transform .25s ease}
.btn:hover svg{transform:translateX(3px)}
.btn-primary{background:linear-gradient(12deg,var(--brand),var(--brand-2));color:#04121A;border-radius:999px;box-shadow:var(--glow-brand)}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 34px rgba(34,211,238,.5)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-amber{background:var(--amber);color:#1A1206;border-radius:999px;box-shadow:0 0 20px rgba(255,176,32,.28)}
.btn-amber:hover{filter:brightness(1.08);box-shadow:0 0 30px rgba(255,176,32,.45)}
.btn-amber:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{border:1px solid var(--line);color:var(--text-2);background:rgba(14,21,36,.6)}
.btn-ghost:hover{border-color:rgba(34,211,238,.5);color:#fff;box-shadow:0 0 18px rgba(34,211,238,.18)}
.btn-ghost:active{transform:translateY(1px);box-shadow:none}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);padding:6px 0}
.btn-link svg{width:16px;height:16px;transition:transform .25s ease}
.btn-link:hover svg{transform:translateX(4px)}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;cursor:not-allowed}

/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(4,8,16,.62);opacity:0;pointer-events:none;transition:opacity .28s ease;z-index:70}
.drawer-mask.open{opacity:1;pointer-events:auto}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:290px;max-width:86vw;
  background:#0A1120;border-left:1px solid var(--line);
  padding:22px 20px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(102%);transition:transform .28s ease;z-index:80;
}
.nav-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:10px;color:var(--text)}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{padding:13px 12px;border-radius:10px;color:var(--muted);font-size:15.5px}
.drawer-nav a:hover{background:rgba(120,180,255,.07);color:#fff}
.drawer-nav a.is-active{color:#fff;background:rgba(34,211,238,.1)}
.drawer-cta{margin-top:auto}
@media(max-width:1023px){
  .nav-channel{display:none}
  .nav-search{display:none}
  .nav-burger{display:inline-flex}
  .nav-right .btn-ghost{display:none}
}
@media(max-width:639px){
  .nav-right .btn-amber{display:none}
}

/* ---------- layout helpers ---------- */
.section{padding:var(--sec-y) 0}
@media(max-width:767px){.section{padding:56px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--brand);text-transform:uppercase;font-weight:700;margin-bottom:12px}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--brand-2))}
.sec-title{font-size:clamp(24px,3vw,30px);font-weight:700}
.sec-sub{margin-top:10px;font-size:15px;color:var(--muted);max-width:620px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:13px;font-weight:600;line-height:1.6}
.badge-cyan{background:rgba(34,211,238,.12);color:var(--brand)}
.badge-violet{background:rgba(124,92,255,.14);color:#A692FF}
.badge-amber{background:rgba(255,176,32,.14);color:var(--amber)}
.badge-muted{background:rgba(143,163,191,.12);color:var(--muted)}

.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-card)}
.glass{
  position:relative;overflow:hidden;
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
}
.glass::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.6),rgba(124,92,255,.45),transparent);
}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent)}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:64px 0 56px}
.page-hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.18;
}
.page-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.55),rgba(7,11,20,.94));
}
.page-hero-inner{position:relative;z-index:1;max-width:760px;margin:0 auto;text-align:center}
.crumb{display:flex;justify-content:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px;flex-wrap:wrap}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#4E5F79}
.page-hero h1{font-size:clamp(26px,4.2vw,40px);font-weight:800;line-height:1.3}
.hero-sub{margin-top:16px;font-size:16.5px;color:var(--muted)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:24px}

/* ---------- download panel ---------- */
.dl-panel{display:grid;grid-template-columns:1fr 1px 1fr;overflow:hidden}
.dl-col{padding:36px 32px}
.dl-divider{background:linear-gradient(180deg,transparent,rgba(120,180,255,.3),transparent)}
.dl-top{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.dl-icon{
  width:44px;height:44px;flex:0 0 auto;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(34,211,238,.34);color:var(--brand);
  background:rgba(34,211,238,.08);
}
.dl-icon.violet{border-color:rgba(124,92,255,.36);color:#A692FF;background:rgba(124,92,255,.1)}
.dl-icon svg{width:22px;height:22px}
.dl-name{font-size:20px;font-weight:700;color:var(--text)}
.dl-note{font-size:14px;color:var(--muted);margin-top:6px}
.meta-list{margin:20px 0 24px;display:flex;flex-direction:column;gap:2px}
.meta-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 0;border-bottom:1px dashed rgba(120,180,255,.14);font-size:14.5px}
.meta-row .k{color:var(--muted)}
.meta-row .v{color:var(--text);font-weight:600}
.dl-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px}
@media(max-width:767px){
  .dl-panel{grid-template-columns:1fr}
  .dl-divider{height:1px;background:linear-gradient(90deg,transparent,rgba(120,180,255,.3),transparent)}
  .dl-col{padding:28px 20px}
}

/* ---------- shot strip ---------- */
.shot-strip{display:grid;grid-template-columns:1.15fr 1fr;gap:0;overflow:hidden;align-items:stretch}
.shot-media{position:relative;aspect-ratio:16/10;border-right:1px solid var(--line);overflow:hidden}
.shot-media img{width:100%;height:100%;object-fit:cover}
.shot-body{padding:32px}
.shot-body h3{font-size:20px;font-weight:700;margin-bottom:12px}
.shot-body p{font-size:15.5px;color:var(--muted);margin-bottom:20px}
@media(max-width:767px){
  .shot-strip{grid-template-columns:1fr}
  .shot-media{border-right:0;border-bottom:1px solid var(--line)}
  .shot-body{padding:24px 20px}
}

/* ---------- spec ---------- */
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.spec-card{padding:28px}
.spec-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.spec-card h3{font-size:20px;font-weight:700}
.spec-row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px dashed rgba(120,180,255,.14);font-size:15px}
.spec-row:last-child{border-bottom:0}
.spec-row .k{color:var(--muted);flex:0 0 auto}
.spec-row .v{color:var(--text);font-weight:600;text-align:right}
.spec-foot{margin-top:20px;display:flex;gap:12px;align-items:flex-start;padding:16px 18px;border-radius:var(--r-sm);border:1px solid var(--line);background:rgba(14,21,36,.62);font-size:14.5px;color:var(--muted)}
.spec-foot svg{width:18px;height:18px;color:var(--brand);flex:0 0 auto;margin-top:3px}
@media(max-width:899px){.spec-grid{grid-template-columns:1fr}}

/* ---------- faq ---------- */
.faq-list{max-width:880px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:14px;background:rgba(14,21,36,.72);margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item.open{border-color:rgba(34,211,238,.4);box-shadow:0 0 0 1px rgba(34,211,238,.08)}
.faq-q{display:flex;width:100%;align-items:center;justify-content:space-between;gap:18px;padding:18px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--text);line-height:1.6}
.faq-icon{width:22px;height:22px;flex:0 0 auto;color:var(--brand);transition:transform .28s ease}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{margin:0 20px 18px 22px;padding-left:14px;border-left:2px solid var(--brand);font-size:15px;color:var(--muted)}

/* ---------- support form ---------- */
.support-grid{display:grid;grid-template-columns:1.35fr .85fr;gap:28px;align-items:start}
.support-form{padding:32px;max-width:720px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media(max-width:639px){.form-row{grid-template-columns:1fr}}
.form-field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.form-field label{font-size:14px;font-weight:600;color:var(--text)}
.form-field label .req{color:var(--amber)}
.form-field input,.form-field textarea,.form-field select{
  width:100%;padding:12px 14px;font-size:15px;color:var(--text);
  background:rgba(7,11,20,.72);border:1px solid var(--line);border-radius:10px;
  outline:none;transition:border-color .2s ease,box-shadow .2s ease;
}
.form-field textarea{min-height:120px;resize:vertical;line-height:1.7}
.form-field input::placeholder,.form-field textarea::placeholder{color:#61748F}
.form-field input:focus,.form-field textarea:focus,.form-field select:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(34,211,238,.18)}
.form-hint{font-size:13px;color:var(--muted)}
.form-error{font-size:13px;color:var(--danger);display:none}
.form-field.has-error input,.form-field.has-error textarea{border-color:var(--danger)}
.form-field.has-error .form-error{display:block}
.support-side{display:flex;flex-direction:column;gap:20px}
.side-card{padding:24px;border-radius:var(--r-md)}
.side-card h3{font-size:17px;font-weight:700;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.side-card h3 svg{width:18px;height:18px;color:var(--brand)}
.side-card p{font-size:14.8px;color:var(--muted)}
.side-list{display:flex;flex-direction:column;gap:10px;margin-top:6px}
.side-list li{font-size:14.8px;color:var(--text-2);padding-left:18px;position:relative}
.side-list li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2))}
@media(max-width:1023px){.support-grid{grid-template-columns:1fr}.support-form{max-width:100%}}

/* ---------- cta band ---------- */
.cta-band{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:34px 36px;position:relative}
.cta-band h2{font-size:clamp(20px,2.6vw,26px);font-weight:700}
.cta-band p{margin-top:8px;font-size:15px;color:var(--muted)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}
.cta-scale{position:absolute;left:0;right:0;bottom:0;height:6px;opacity:.08;background-image:repeating-linear-gradient(90deg,rgba(34,211,238,.9) 0 1px,transparent 1px 12px)}
@media(max-width:899px){.cta-band{flex-direction:column;align-items:flex-start;padding:28px 22px}}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--bg-deep);border-top:1px solid var(--line);margin-top:24px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(34,211,238,.5),rgba(124,92,255,.4),transparent)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:28px;height:28px;color:var(--brand)}
.footer-brand .brand-name{font-size:17px}
.footer-desc{font-size:14.5px;color:var(--muted);max-width:280px}
.footer-title{font-size:15px;font-weight:700;color:var(--text);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-link{font-size:14.5px;color:var(--muted);transition:color .2s ease}
.footer-link:hover{color:var(--brand)}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14.5px;color:var(--muted)}
.qr-box{
  margin-top:12px;width:110px;height:110px;border-radius:12px;
  border:1px dashed rgba(120,180,255,.28);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:13px;line-height:1.6;color:#7E93B0;
  background:linear-gradient(135deg,rgba(34,211,238,.07),rgba(124,92,255,.07));
}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;padding:22px 0 34px;border-top:1px solid var(--line);font-size:13.5px;color:#7E93B0}
.fb-links{display:flex;gap:18px;flex-wrap:wrap}
@media(max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px}}
@media(max-width:639px){.footer-grid{grid-template-columns:1fr}}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease,transform .4s ease}
.reveal.is-visible{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}