/* roulang page: index */
:root{
  --bg:#0B0E23;
  --bg-deep:#080A1C;
  --card:#141834;
  --line:rgba(255,255,255,.09);
  --brand:#7A5CFF;
  --accent:#37D3C0;
  --warm:#FFB86B;
  --ink:#ECEDF6;
  --muted:#9AA0C0;
  --light:#F6F3EC;
  --light-ink:#1A1A2E;
  --light-muted:#5B5B72;
  --r:12px;
  --mono:"SF Mono",ui-monospace,Menlo,Consolas,monospace;
  --shadow:0 2px 8px rgba(11,14,35,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--bg);
  background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:32px 32px;
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:15px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3{margin:0;line-height:1.3;letter-spacing:-.01em}
p{margin:0 0 12px}
p:last-child{margin-bottom:0}
button{font:inherit}
section[id]{scroll-margin-top:112px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 20px;border-radius:8px;
  font-size:14px;font-weight:600;cursor:pointer;
  border:1px solid transparent;
  transition:transform .3s,background .3s,border-color .3s,filter .3s;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-primary:active{transform:none}
.btn-outline{border-color:var(--line);color:var(--ink);background:transparent}
.btn-outline:hover{background:rgba(122,92,255,.10);border-color:var(--brand)}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.sec-light .btn-outline{border-color:rgba(26,26,46,.18);color:var(--light-ink)}
.sec-light .btn-outline:hover{background:rgba(122,92,255,.10);border-color:var(--brand)}

/* 头部 */
.site-header{position:sticky;top:0;z-index:50;background:rgba(11,14,35,.97);border-bottom:1px solid var(--line)}
.nav-main{display:flex;align-items:center;gap:18px;height:64px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:24px;height:24px;border-radius:7px;flex:none;
  background:linear-gradient(135deg,#7A5CFF,#37D3C0);
  display:grid;place-items:center;color:#fff;font-size:12px;font-weight:700;line-height:1;
}
.logo-name{display:block;font-size:15px;font-weight:700;line-height:1.2}
.brand-sub{display:block;font-size:11px;color:var(--muted);line-height:1.4}
.nav-right{display:flex;align-items:center;gap:18px;margin-left:auto}
.nav-links{display:flex;gap:20px;font-size:14px;color:var(--muted)}
.nav-links a{transition:color .3s}
.nav-links a:hover{color:var(--ink)}
.nav-chips{display:flex;gap:8px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;color:var(--muted);
  border:1px solid var(--line);border-radius:999px;
  padding:5px 10px;white-space:nowrap;transition:.3s;
}
.chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);flex:none}
.chip:hover{color:var(--ink);border-color:var(--brand)}
.notice-bar{border-top:1px solid var(--line)}
.notice{display:flex;align-items:center;gap:10px;height:40px;font-size:13px;color:var(--muted);overflow:hidden}
.notice-tag{flex:none;background:var(--brand);color:#fff;font-size:11px;line-height:1.6;padding:1px 8px;border-radius:4px}
.notice-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mnav{display:none;position:relative}
.mnav summary{
  list-style:none;cursor:pointer;width:44px;height:44px;
  display:grid;place-items:center;border:1px solid var(--line);
  border-radius:8px;font-size:18px;color:var(--ink);
}
.mnav summary::-webkit-details-marker{display:none}
.mnav-panel{
  position:absolute;right:0;top:52px;width:216px;
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:12px;display:flex;flex-direction:column;gap:4px;z-index:60;
}
.mnav-panel a{font-size:14px;color:var(--ink);padding:10px 8px;border-radius:8px;min-height:44px;display:flex;align-items:center}
.mnav-panel a:hover{background:rgba(122,92,255,.12)}
.mnav-panel .chips-row{display:flex;gap:8px;overflow-x:auto;padding-top:8px}

/* 通用板块 */
.sec{padding:72px 0}
.sec-light{background:var(--light);color:var(--light-ink)}
.sec-deep{background:var(--bg-deep)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;flex-wrap:wrap}
.sec-title{font-size:26px;font-weight:700}
.sec-title::before{
  content:"";display:inline-block;width:4px;height:18px;border-radius:2px;
  background:var(--brand);margin-right:10px;vertical-align:-2px;
}
.sec-desc{font-size:14px;color:var(--muted);max-width:640px;margin-top:8px}
.sec-light .sec-desc{color:var(--light-muted)}
.more{font-size:13px;color:var(--accent);white-space:nowrap}
.more:hover{color:var(--brand)}
.sec-light .more{color:#5B4BD6}

/* Hero */
.hero{position:relative;overflow:hidden;padding:72px 0 64px;background:var(--bg)}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.34}
.hero-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,14,35,.55) 0%,rgba(11,14,35,.92) 72%,var(--bg) 100%)}
.hero-inner{position:relative;text-align:center;max-width:860px}
.hero-avatar{
  width:64px;height:64px;border-radius:20px;margin:0 auto 18px;
  background:linear-gradient(135deg,#7A5CFF,#37D3C0);
  display:grid;place-items:center;color:#fff;font-size:26px;font-weight:700;
}
.hero h1{font-size:clamp(28px,4vw,44px);font-weight:700;letter-spacing:-.02em;line-height:1.2}
.hero h1 em{font-style:normal;color:var(--brand);box-shadow:inset 0 -4px 0 rgba(122,92,255,.45)}
.hero-intro{margin:18px auto 0;max-width:720px;font-size:15px;color:var(--muted)}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:20px}
.badge{
  font-size:11px;padding:5px 10px;border-radius:999px;
  background:rgba(122,92,255,.14);color:#B7A6FF;border:1px solid rgba(122,92,255,.28);
}
.badge.teal{background:rgba(55,211,192,.12);color:var(--accent);border-color:rgba(55,211,192,.28)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:26px}
.hero-metrics{
  display:grid;grid-template-columns:1fr;gap:16px;
  margin-top:40px;padding:20px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.hero-metrics li{text-align:center}
.hero-metrics strong{display:block;font-family:var(--mono);font-size:22px;color:var(--ink);line-height:1.2}
.hero-metrics span{font-size:12px;color:var(--muted)}

/* 核心能力 */
.feat-card{
  background:#fff;border:1px solid rgba(26,26,46,.08);border-radius:var(--r);
  padding:22px;box-shadow:var(--shadow);
}
.feat-icon{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  background:rgba(122,92,255,.10);color:#5B4BD6;margin-bottom:14px;
}
.feat-card h3{font-size:17px;font-weight:600;margin-bottom:8px}
.feat-card p{font-size:14px;color:var(--light-muted);line-height:1.7}

/* 热播 */
.grid-mv{display:grid;gap:20px;grid-template-columns:repeat(2,1fr)}
.mv-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.mv-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0f1330}
.mv-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.mv-card:hover .mv-cover img{transform:scale(1.03)}
.mv-time{
  position:absolute;right:8px;bottom:8px;font-family:var(--mono);font-size:11px;
  background:rgba(11,14,35,.82);color:#fff;padding:1px 6px;border-radius:999px;
}
.mv-hd{
  position:absolute;left:8px;top:8px;font-size:11px;padding:2px 7px;border-radius:999px;
  background:rgba(122,92,255,.85);color:#fff;
}
.mv-card h3{font-size:15px;font-weight:600;padding:12px 12px 0;transition:color .3s}
.mv-card:hover h3{color:var(--brand)}
.mv-meta{font-size:12px;color:var(--muted);padding:2px 12px 14px}

/* 场景 */
.scenes{display:grid;gap:20px;grid-template-columns:repeat(2,1fr)}
.scene{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px}
.scene svg{color:var(--accent);margin-bottom:10px}
.scene h3{font-size:15px;font-weight:600;margin-bottom:6px}
.scene p{font-size:13px;color:var(--muted);line-height:1.7}

/* 最新更新 */
.latest-list{display:grid;gap:16px;grid-template-columns:1fr}
.latest-card{
  display:grid;grid-template-columns:104px 1fr;gap:14px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:12px;
}
.latest-card img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:8px}
.latest-card h3{font-size:15px;font-weight:600;margin-bottom:4px}
.latest-date{font-family:var(--mono);font-size:12px;color:var(--muted)}
.ver{display:inline-block;font-size:11px;padding:2px 8px;border-radius:999px;background:rgba(55,211,192,.12);color:var(--accent);margin-top:6px}

/* 演示 */
.demo{position:relative;overflow:hidden}
.demo-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.14}
.demo .container{position:relative}
.demo-grid{display:grid;gap:24px;grid-template-columns:1fr;align-items:start}
.shot{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--card);margin:0;width:100%}
.shot-desktop{aspect-ratio:16/10}
.shot-phone{aspect-ratio:9/19;max-width:220px;margin:0 auto}
.shot img{width:100%;height:100%;object-fit:cover}
.demo-points{margin-top:28px;display:grid;gap:12px;grid-template-columns:1fr}
.demo-points li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted)}
.demo-points svg{flex:none;color:var(--accent);margin-top:3px}

/* 分类 */
.cat-grid{display:grid;gap:0;grid-template-columns:1fr}
.cat-col{padding:22px 0;border-bottom:1px solid rgba(26,26,46,.10)}
.cat-col h3{font-size:18px;font-weight:700;margin-bottom:8px}
.cat-col p{font-size:14px;color:var(--light-muted);margin-bottom:10px}
.cat-count{font-family:var(--mono);font-size:12px;color:var(--light-muted);display:block;margin-bottom:10px}
.cat-link{font-size:13px;font-weight:600;color:#5B4BD6}
.cat-link:hover{color:var(--brand)}

/* 榜单 */
.rank-list{display:grid;grid-template-columns:1fr}
.rank-list li{
  display:grid;grid-template-columns:36px 1fr auto auto;align-items:center;gap:10px;
  height:52px;padding:0 8px;border-bottom:1px solid var(--line);transition:background .3s;
}
.rank-list li:hover{background:rgba(122,92,255,.08)}
.rank-no{font-family:var(--mono);font-size:14px;color:var(--muted)}
.rank-list li:nth-child(-n+3) .rank-no{color:var(--brand);font-weight:700}
.rank-title{font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rank-play{font-family:var(--mono);font-size:12px;color:var(--muted)}
.tag{font-size:11px;padding:2px 8px;border-radius:999px;background:rgba(122,92,255,.12);color:#B7A6FF;border:1px solid rgba(122,92,255,.24);white-space:nowrap}

/* 案例 */
.case-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.case-card p{font-size:14px;color:var(--muted);line-height:1.8}
.case-user{display:flex;align-items:center;gap:10px;margin-top:16px}
.avatar{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;font-size:14px;font-weight:700;color:#fff;flex:none}
.case-user strong{display:block;font-size:14px;font-weight:600}
.case-user span{font-size:12px;color:var(--muted)}

/* 价格 */
.price-card{background:#fff;border:1px solid rgba(26,26,46,.10);border-radius:var(--r);padding:26px;box-shadow:var(--shadow);position:relative}
.price-card.best{border-color:var(--brand);border-width:2px}
.price-tag{position:absolute;top:-12px;left:26px;background:var(--brand);color:#fff;font-size:11px;padding:3px 10px;border-radius:999px}
.price-card h3{font-size:16px;font-weight:700;margin-bottom:10px}
.price-num{font-family:var(--mono);font-size:34px;font-weight:700;color:var(--light-ink);line-height:1.1}
.price-unit{font-size:13px;color:var(--light-muted);margin-left:4px}
.plist{margin:18px 0 22px;display:grid;gap:10px}
.plist li{display:flex;gap:8px;font-size:14px;color:var(--light-muted);align-items:flex-start}
.plist svg{flex:none;color:#1FA99A;margin-top:3px}

/* 评价 */
.review-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px}
.stars{color:var(--warm);font-size:13px;letter-spacing:2px;margin-bottom:8px}
.review-card p{font-size:14px;color:var(--muted);line-height:1.8}
.review-foot{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-top:14px}

/* 数据 */
.stats{display:grid;gap:24px;grid-template-columns:repeat(2,1fr);text-align:center}
.stats strong{display:block;font-family:var(--mono);font-size:30px;color:var(--brand);line-height:1.2}
.stats span{font-size:13px;color:var(--muted)}

/* 步骤 */
.steps{display:grid;gap:26px;grid-template-columns:1fr}
.step{position:relative;padding-left:56px}
.step-no{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--brand);display:grid;place-items:center;
  font-family:var(--mono);font-size:13px;color:var(--brand);
}
.step h3{font-size:16px;font-weight:600;margin-bottom:6px}
.step p{font-size:13px;color:var(--muted);line-height:1.7}

/* FAQ */
.faq details{border-bottom:1px solid var(--line);padding:16px 0}
.faq summary{
  list-style:none;cursor:pointer;display:flex;justify-content:space-between;
  gap:12px;font-size:16px;font-weight:600;min-height:44px;align-items:center;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--brand);font-size:20px;line-height:1;transition:transform .3s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq p{margin-top:12px;font-size:14px;color:var(--muted);line-height:1.8}

/* 资讯 */
.news-item{
  display:grid;grid-template-columns:120px 1fr;gap:14px;align-items:center;padding:12px 0;
  border-bottom:1px solid rgba(26,26,46,.10);
}
.news-item img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:8px}
.news-item h3{font-size:15px;font-weight:600;color:var(--light-ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.news-item .news-date{font-family:var(--mono);font-size:12px;color:var(--light-muted)}
.news-item:hover h3{color:#5B4BD6}

/* CTA */
.cta-band{
  background:linear-gradient(120deg,#171B3E 0%,#1B1642 55%,#241A55 100%);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:56px 0;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-10%;top:-40%;width:46%;height:180%;
  background:linear-gradient(90deg,rgba(122,92,255,0),rgba(122,92,255,.30));
  transform:rotate(18deg);pointer-events:none;
}
.cta-inner{position:relative;display:flex;flex-direction:column;gap:20px;align-items:center;text-align:center}
.cta-inner h2{font-size:26px;font-weight:700}
.cta-inner p{font-size:14px;color:var(--muted);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}

/* 页脚 */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:56px 0 24px;font-size:14px;color:var(--muted)}
.foot-grid{display:grid;gap:32px;grid-template-columns:1fr}
.foot-grid h3{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:12px}
.foot-grid ul{display:grid;gap:8px}
.foot-grid a:hover{color:var(--ink)}
.foot-desc{font-size:13px;line-height:1.8;margin-top:14px}
.foot-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);text-align:center}

/* 响应式 */
@media(min-width:520px){
  .hero-metrics{grid-template-columns:repeat(3,1fr)}
  .demo-points{grid-template-columns:repeat(3,1fr)}
  .latest-list{grid-template-columns:repeat(2,1fr)}
}
@media(min-width:768px){
  .grid-mv{grid-template-columns:repeat(3,1fr)}
  .latest-list{grid-template-columns:repeat(2,1fr)}
  .demo-grid{grid-template-columns:1.6fr .9fr}
  .scenes{grid-template-columns:repeat(4,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .hero-metrics{grid-template-columns:repeat(3,1fr)}
  .foot-grid{grid-template-columns:repeat(2,1fr)}
  .cat-grid{grid-template-columns:repeat(3,1fr)}
  .cat-col{padding:22px;border-bottom:0;border-left:1px solid rgba(26,26,46,.10)}
  .cat-col:first-child{border-left:0}
  .sec{padding:64px 0}
}
@media(min-width:1024px){
  .grid-mv{grid-template-columns:repeat(4,1fr)}
  .latest-list{grid-template-columns:repeat(3,1fr)}
  .cat-grid{grid-template-columns:repeat(5,1fr)}
  .rank-list{grid-template-columns:1fr 1fr;grid-auto-flow:column;grid-template-rows:repeat(5,auto);column-gap:40px}
  .steps{grid-template-columns:repeat(4,1fr)}
  .step::after{content:"";position:absolute;right:-14px;top:20px;width:26px;border-top:1px dashed rgba(255,255,255,.22)}
  .step:last-child::after{display:none}
  .foot-grid{grid-template-columns:1.6fr 1fr 1fr 1fr}
  .cta-inner{flex-direction:row;justify-content:space-between;text-align:left;align-items:center}
  .stats{grid-template-columns:repeat(4,1fr)}
  .sec{padding:72px 0}
}
@media(max-width:1024px){
  .nav-links,.nav-chips{display:none}
  .mnav{display:block}
  .container{padding:0 24px}
  .hero{padding:56px 0 48px}
}
@media(max-width:768px){
  .sec{padding:52px 0}
  .sec-title{font-size:22px}
  .container{padding:0 20px}
  .hero-metrics{padding:16px 0}
}
@media(max-width:520px){
  .container{padding:0 16px}
  .sec{padding:44px 0}
  .hero{padding:44px 0 40px}
  .nav-main{height:60px}
  .hero-intro{font-size:14px}
  .rank-list li{grid-template-columns:32px 1fr auto;gap:8px}
  .rank-play{display:none}
  .latest-card{grid-template-columns:88px 1fr}
  .news-item{grid-template-columns:100px 1fr}
  .stats{grid-template-columns:repeat(2,1fr);gap:20px}
  .stats strong{font-size:24px}
  .price-card{padding:22px}
}