/* roulang page: index */
:root{
  --bg:#0B0C0F;--bg-alt:#101217;--surface:#14161B;--surface-2:#1B1E24;
  --line:rgba(255,255,255,0.09);--line-strong:rgba(255,255,255,0.16);
  --text:#F4F1EA;--muted:#A4A7AE;
  --primary:#F25C2A;--primary-hover:#FF7A4D;--accent:#5BE0C8;
  --radius-card:14px;--radius-btn:10px;
  --shadow-card:0 24px 60px rgba(0,0,0,0.38);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);overflow-x:hidden;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;font-variant-numeric:tabular-nums}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-0.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
main{padding-top:72px}
.sec{padding:96px 0}
.band{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;
  border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out}
.btn-primary{background:var(--primary);color:#140D09}
.btn-primary:hover{background:var(--primary-hover);transform:translateX(2px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary-hover)}
.btn:focus-visible,button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.btn-sm{min-height:44px;padding:0 16px;font-size:14px}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:10px;
  background:transparent;border:1px solid var(--line);color:var(--text);cursor:pointer;transition:border-color .18s ease-out,color .18s ease-out}
.icon-btn:hover{border-color:var(--primary);color:var(--primary-hover)}

/* 通用标签与标题 */
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--primary);
  border:1px solid rgba(242,92,42,.35);border-radius:999px;padding:4px 12px;background:rgba(242,92,42,.07)}
.tag{display:inline-block;font-size:12px;letter-spacing:.06em;color:var(--muted);
  border:1px solid var(--line);border-radius:999px;padding:3px 10px;background:var(--surface-2)}
.tag-accent{color:var(--accent);border-color:rgba(91,224,200,.35)}
.h2{font-size:36px;line-height:1.22;font-weight:800}
.lead{color:var(--muted);font-size:16px;line-height:1.85;max-width:720px;margin-top:14px;text-align:left}
.sec-head{margin-bottom:40px}
.sec-num{display:block;font-size:12px;letter-spacing:.16em;color:var(--primary);margin-bottom:12px}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-size:14px;font-weight:600;
  border-bottom:1px solid rgba(91,224,200,.4);padding-bottom:2px;transition:color .18s ease-out,border-color .18s ease-out}
.link-more:hover{color:#8BF0DE;border-color:#8BF0DE}
.link-more span{transition:transform .18s ease-out}
.link-more:hover span{transform:translateX(2px)}

/* 头部导航 */
.site-header{position:fixed;top:0;left:0;right:0;z-index:60;background:rgba(11,12,15,.88);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid transparent;
  transition:background .2s ease-out,border-color .2s ease-out}
.site-header.scrolled{background:var(--bg);border-bottom-color:var(--line)}
.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:.02em}
.brand svg{flex:0 0 auto}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{position:relative;font-size:15px;color:var(--muted);padding:6px 0;transition:color .18s ease-out}
.nav-links a:hover{color:var(--text)}
.nav-links a.is-active{color:var(--text)}
.nav-links a.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--primary);border-radius:2px}
.nav-actions{display:flex;align-items:center;gap:10px}
.search-bar{border-top:1px solid var(--line);padding:14px 0 18px}
.search-form{display:flex;gap:10px;align-items:center}
.search-input{flex:1;height:46px;padding:0 16px;border-radius:var(--radius-btn);background:var(--surface);
  border:1px solid var(--line-strong);color:var(--text);font-size:15px;transition:border-color .18s ease-out}
.search-input::placeholder{color:#6E727A}
.search-input:focus{border-color:var(--accent);outline:none}
.burger{display:none}

/* 抽屉 */
.overlay{position:fixed;inset:0;background:rgba(5,6,8,.7);z-index:70;opacity:0;transition:opacity .2s ease-out}
.overlay.show{opacity:1}
.drawer{position:fixed;top:0;right:0;bottom:0;width:86%;max-width:380px;z-index:80;background:var(--bg-alt);
  border-left:1px solid var(--line);transform:translateX(100%);transition:transform .22s ease-out;
  padding:20px 22px 32px;display:flex;flex-direction:column;gap:22px;overflow-y:auto}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{padding:14px 0;border-bottom:1px solid var(--line);font-size:16px;color:var(--text)}
.drawer-nav a:first-child{border-top:1px solid var(--line)}
.drawer-nav a.is-active{color:var(--primary)}
.drawer-contact{font-size:13px;color:var(--muted);line-height:1.9;border-top:1px solid var(--line);padding-top:16px}

/* Hero */
.hero{position:relative;padding:64px 0 96px;border-bottom:1px solid var(--line);
  background-image:
    radial-gradient(720px 380px at 90% -12%,rgba(242,92,42,.16),transparent 70%),
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:auto,72px 72px,72px 72px}
.hero-h1{font-size:62px;line-height:1.12;font-weight:800;letter-spacing:-0.02em;max-width:880px;margin-top:20px}
.hero-sub{max-width:720px;font-size:17px;line-height:1.85;color:var(--muted);margin-top:20px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:32px;padding-top:20px;
  border-top:1px solid var(--line);font-size:13px;color:var(--muted);letter-spacing:.06em}
.hero-meta li{display:flex;align-items:center;gap:8px}
.hero-meta li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent)}
.hero-grid{display:grid;grid-template-columns:1fr 1.9fr 1fr;gap:24px;align-items:start;margin-top:56px}
.point{padding:16px 0;border-bottom:1px solid var(--line)}
.point:first-child{border-top:2px solid var(--primary)}
.point-idx{font-size:13px;color:var(--primary);letter-spacing:.1em;font-weight:700}
.point h3{font-size:17px;line-height:1.4;margin:8px 0 6px}
.point p{font-size:14px;line-height:1.75;color:var(--muted)}
.stage-frame{position:relative;border:1px solid var(--line-strong);border-radius:var(--radius-card);
  overflow:hidden;background:var(--surface);aspect-ratio:16/9;box-shadow:var(--shadow-card)}
.stage-frame img{width:100%;height:100%;object-fit:cover;opacity:.88}
.stage-frame .corner{position:absolute;width:14px;height:14px;border:1px solid var(--accent);opacity:.75}
.corner.tl{top:12px;left:12px;border-right:0;border-bottom:0}
.corner.tr{top:12px;right:12px;border-left:0;border-bottom:0}
.corner.bl{bottom:12px;left:12px;border-right:0;border-top:0}
.corner.br{bottom:12px;right:12px;border-left:0;border-top:0}
.play-btn{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:64px;height:64px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;background:rgba(11,12,15,.55);
  border:1px solid var(--accent);color:var(--accent);cursor:pointer;transition:background .18s ease-out,transform .18s ease-out}
.play-btn:hover{background:rgba(91,224,200,.16);transform:translate(-50%,-50%) scale(1.04)}
.stage-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.score-card{border:1px solid var(--line);border-left:2px solid var(--primary);border-radius:12px;
  padding:16px 18px;background:var(--surface);margin-top:20px}
.score-label{display:block;font-size:12px;letter-spacing:.08em;color:var(--muted)}
.score-value{display:block;font-size:34px;font-weight:800;line-height:1.2;color:var(--text);margin-top:4px}
.score-note{display:block;font-size:12px;color:var(--muted);margin-top:4px}

/* 卖点三连 */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line)}
.pillar{padding:32px 28px 28px;border-right:1px solid var(--line)}
.pillar:last-child{border-right:0}
.pillar-idx{font-size:44px;font-weight:800;line-height:1;color:rgba(255,255,255,.14)}
.pillar:first-child .pillar-idx{color:var(--primary)}
.pillar h3{font-size:20px;line-height:1.4;margin:14px 0 8px}
.pillar p{font-size:15px;line-height:1.8;color:var(--muted)}

/* 场景演示 tab */
.scene-wrap{display:grid;grid-template-columns:30% 1fr;gap:32px;align-items:start}
.tab-list{display:flex;flex-direction:column;border-left:1px solid var(--line)}
.tab-btn{display:block;width:100%;text-align:left;padding:16px 18px;background:transparent;border:0;
  border-left:2px solid transparent;color:var(--muted);font-size:16px;font-weight:600;cursor:pointer;
  transition:color .18s ease-out,border-color .18s ease-out,background .18s ease-out}
.tab-btn:hover{color:var(--text)}
.tab-btn[aria-selected="true"]{color:var(--text);border-left-color:var(--primary);background:rgba(242,92,42,.06)}
.tab-btn small{display:block;font-size:12px;font-weight:400;color:var(--muted);margin-top:4px}
.stage-panel{display:none}
.stage-panel.is-on{display:block;animation:fade .2s ease-out}
@keyframes fade{from{opacity:0}to{opacity:1}}
.scene-figure{position:relative;border:1px solid var(--line-strong);border-radius:var(--radius-card);
  overflow:hidden;aspect-ratio:16/9;background:var(--surface)}
.scene-figure img{width:100%;height:100%;object-fit:cover;opacity:.85}
.scene-bar{position:absolute;left:16px;right:16px;bottom:16px;display:flex;align-items:center;gap:12px}
.scene-bar .track{flex:1;height:4px;border-radius:2px;background:rgba(255,255,255,.18);overflow:hidden}
.scene-bar .track i{display:block;height:100%;width:42%;background:var(--accent)}
.scene-bar .time{font-size:12px;color:#E6E3DC;letter-spacing:.04em}
.scene-points{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:20px}
.scene-points li{font-size:14px;line-height:1.75;color:var(--muted);border-top:1px solid var(--line);padding-top:12px}
.scene-points li b{display:block;color:var(--text);font-size:15px;font-weight:600;margin-bottom:4px}

/* 专题卡 */
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .18s ease-out,transform .18s ease-out}
.card:hover{border-color:rgba(242,92,42,.55);transform:translateY(-2px)}
.card:hover .card-title{color:var(--primary-hover)}
.card:hover .thumb img{transform:scale(1.03)}
.topic-lg{grid-column:span 2}
.thumb{position:relative;aspect-ratio:3/2;overflow:hidden;background:var(--surface-2)}
.topic-lg .thumb{aspect-ratio:16/9}
.thumb img{width:100%;height:100%;object-fit:cover;opacity:.9;transition:transform .22s ease-out}
.thumb .tag-abs{position:absolute;left:12px;top:12px;background:rgba(11,12,15,.72)}
.card-body{padding:20px 22px 24px}
.card-title{font-size:19px;line-height:1.42;margin-bottom:8px;transition:color .18s ease-out}
.card-text{font-size:14px;line-height:1.78;color:var(--muted)}
.card-arrow{position:absolute;right:20px;bottom:18px;font-size:16px;color:var(--primary)}

/* 社会认同 */
.proof-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:24px}
.quote{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 24px}
.quote-main{border-left:2px solid var(--primary)}
.quote-head{display:flex;align-items:center;gap:12px}
.avatar{width:44px;height:44px;border-radius:50%;object-fit:cover;border:1px solid var(--line-strong)}
.quote-name{font-size:15px;font-weight:600}
.quote-role{font-size:12px;color:var(--muted)}
.quote-text{font-size:15px;line-height:1.8;color:#D8D5CE;margin-top:16px}
.quote-score{display:flex;gap:4px;margin-top:14px}
.quote-score i{width:18px;height:4px;border-radius:2px;background:rgba(255,255,255,.14)}
.quote-score i.on{background:var(--accent)}
.logo-wall{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;padding-top:24px;border-top:1px solid var(--line)}
.logo-wall span{font-size:13px;color:#6E727A;letter-spacing:.06em;border:1px dashed var(--line-strong);
  border-radius:8px;padding:8px 14px}

/* 对比表 */
.compare{border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--surface)}
.compare-row{display:grid;grid-template-columns:180px 1fr 1fr;border-top:1px solid var(--line)}
.compare-row:first-child{border-top:0}
.compare-row > span{padding:16px 20px;font-size:15px;line-height:1.7}
.compare-head{background:var(--surface-2)}
.compare-head > span{font-size:13px;letter-spacing:.06em;color:var(--muted);font-weight:600}
.compare-head .is-us{color:var(--text)}
.c-dim{color:var(--muted);font-size:14px}
.c-left{color:#8C9099;display:flex;gap:10px;align-items:flex-start}
.c-left::before{content:"—";color:#565A62;flex:0 0 auto}
.c-right{display:flex;gap:10px;align-items:flex-start;background:rgba(242,92,42,.05);
  border-left:2px solid var(--primary);color:var(--text)}
.c-right::before{content:"✓";color:var(--accent);flex:0 0 auto;font-weight:700}

/* 数据条 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface);overflow:hidden}
.stat{padding:26px 24px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat-num{display:block;font-size:38px;font-weight:800;line-height:1.1;color:var(--text)}
.stat-label{display:block;font-size:13px;color:var(--muted);margin-top:8px}
.stat-line{display:block;height:3px;border-radius:2px;background:rgba(255,255,255,.1);margin-top:16px;overflow:hidden}
.stat-line i{display:block;height:100%;width:38%;background:var(--primary)}
.stat:last-child .stat-line i{background:var(--accent)}
.stats-note{font-size:13px;color:#6E727A;margin-top:14px}

/* 时间轴 */
.timeline{display:grid;grid-template-columns:1fr 1fr;gap:0 40px}
.tl-item{display:grid;grid-template-columns:72px 1fr;gap:16px;padding:20px 0;border-bottom:1px solid var(--line)}
.tl-date{font-size:13px;color:var(--primary);letter-spacing:.06em;font-weight:700;padding-top:2px}
.tl-body{position:relative;padding-left:20px}
.tl-body::before{content:"";position:absolute;left:0;top:8px;width:7px;height:7px;border-radius:50%;background:var(--primary)}
.tl-body::after{content:"";position:absolute;left:3px;top:18px;bottom:-20px;width:1px;background:var(--line)}
.tl-item:last-child .tl-body::after{display:none}
.tl-body h3{font-size:17px;line-height:1.45;margin:6px 0 4px}
.tl-body p{font-size:14px;color:var(--muted);line-height:1.7}

/* 资讯 */
.news-wrap{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:start}
.news-main{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  transition:border-color .18s ease-out,transform .18s ease-out}
.news-main:hover{border-color:rgba(242,92,42,.55);transform:translateY(-2px)}
.news-main .thumb{aspect-ratio:16/10}
.news-main-body{padding:22px 24px 26px}
.news-main h3{font-size:22px;line-height:1.42;margin:10px 0 10px}
.news-main p{font-size:15px;line-height:1.8;color:var(--muted)}
.news-meta{display:flex;gap:14px;font-size:13px;color:#6E727A;margin-top:14px}
.news-list{display:flex;flex-direction:column}
.news-item{padding:16px 0;border-bottom:1px solid var(--line)}
.news-item:first-child{padding-top:0}
.news-item h3{font-size:16px;line-height:1.5;transition:color .18s ease-out}
.news-item:hover h3{color:var(--primary-hover)}
.news-item p{font-size:13px;color:var(--muted);margin-top:6px;line-height:1.7}
.news-item .news-meta{margin-top:8px}

/* 三步 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative}
.step{position:relative;padding:8px 0}
.step-idx{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--primary)}
.step h3{font-size:19px;line-height:1.4;margin:10px 0 8px}
.step p{font-size:15px;line-height:1.8;color:var(--muted)}
.step::after{content:"";position:absolute;right:-12px;top:22px;width:24px;border-top:1px dashed var(--line-strong)}
.step:last-child::after{display:none}
.steps-cta{margin-top:36px}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:35% 1fr;gap:48px;align-items:start}
.acc{border-top:1px solid var(--line)}
.acc-item{border-bottom:1px solid var(--line)}
.acc-btn{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;
  padding:20px 0;background:transparent;border:0;color:var(--text);text-align:left;
  font-size:17px;font-weight:600;line-height:1.5;cursor:pointer}
.acc-btn:hover{color:var(--primary-hover)}
.acc-plus{flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .2s ease-out}
.acc-plus::before,.acc-plus::after{content:"";position:absolute;background:var(--primary);border-radius:1px}
.acc-plus::before{left:0;top:10px;width:22px;height:2px}
.acc-plus::after{left:10px;top:0;width:2px;height:22px;transition:opacity .2s ease-out}
.acc-btn[aria-expanded="true"] .acc-plus{transform:rotate(90deg)}
.acc-btn[aria-expanded="true"] .acc-plus::after{opacity:0}
.acc-panel{display:none;padding:0 0 22px;font-size:15px;line-height:1.8;color:var(--muted);max-width:640px}
.acc-panel.is-on{display:block}
.faq-side p{font-size:15px;line-height:1.85;color:var(--muted);margin-top:14px;max-width:320px}

/* 保障条 */
.guard{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:40px 0}
.guard-wrap{display:grid;grid-template-columns:200px 1fr;gap:32px;align-items:center}
.guard-label{font-size:13px;letter-spacing:.08em;color:var(--primary);font-weight:700}
.guard-items{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.guard-item{display:flex;gap:12px;align-items:flex-start}
.guard-item svg{flex:0 0 auto;color:var(--accent);margin-top:2px}
.guard-item h3{font-size:15px;line-height:1.4;font-weight:600;margin-bottom:4px}
.guard-item p{font-size:13px;color:var(--muted);line-height:1.7}

/* 底部转化 */
.cta-panel{display:grid;grid-template-columns:1fr 1fr;gap:40px;background:var(--surface);
  border:1px solid var(--line);border-left:2px solid var(--primary);border-radius:var(--radius-card);
  padding:48px;box-shadow:var(--shadow-card);
  background-image:linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);
  background-size:48px 48px}
.cta-panel h2{font-size:32px;line-height:1.25}
.cta-panel .lead{margin-top:14px;font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;color:var(--muted);letter-spacing:.04em;margin-bottom:8px}
.field input{width:100%;height:48px;padding:0 16px;border-radius:var(--radius-btn);background:var(--bg);
  border:1px solid var(--line-strong);color:var(--text);font-size:15px;transition:border-color .18s ease-out}
.field input::placeholder{color:#5E626A}
.field input:focus{outline:none;border-color:var(--accent)}
.form-msg{font-size:13px;line-height:1.6;min-height:20px;margin:2px 0 12px;color:var(--muted)}
.lead-form.is-error input{border-color:#E05B4B}
.lead-form.is-error .form-msg{color:#F08A7C}
.lead-form.is-success input{border-color:var(--accent)}
.lead-form.is-success .form-msg{color:var(--accent);border-left:2px solid var(--accent);padding-left:8px}
.privacy{font-size:12px;color:#6E727A;margin-top:12px;line-height:1.7}

/* 页脚 */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{font-size:13px;color:var(--muted);line-height:1.9;margin-top:14px}
.footer-col h4{font-size:13px;letter-spacing:.08em;color:var(--muted);font-weight:600;margin-bottom:16px}
.footer-col a,.footer-col p{display:block;font-size:14px;color:#C9C6BF;line-height:2;transition:color .18s ease-out}
.footer-col a:hover{color:var(--primary-hover)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;align-items:center;
  border-top:1px solid var(--line);margin-top:48px;padding:22px 0;font-size:13px;color:#6E727A}
.footer-bottom a{color:#8C9099}
.footer-bottom a:hover{color:var(--primary-hover)}

/* 固定转化条 */
.sticky-cta{position:fixed;left:0;right:0;bottom:0;z-index:55;height:64px;display:flex;align-items:center;gap:16px;
  padding:0 20px;background:var(--bg);border-top:1px solid var(--primary);
  transform:translateY(110%);transition:transform .22s ease-out;padding-bottom:env(safe-area-inset-bottom)}
.sticky-cta.show{transform:translateY(0)}
.sticky-text{flex:1;font-size:14px;color:var(--text);letter-spacing:.04em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sticky-cta .icon-btn{width:40px;height:40px;border-color:var(--line-strong)}

@media (max-width:1024px){
  .nav-links{gap:20px}
  .hero-h1{font-size:48px}
  .hero-grid{grid-template-columns:1fr 1.5fr;gap:24px}
  .hero-points.side-right{grid-column:span 2;display:grid;grid-template-columns:1fr 1fr;gap:0 24px}
  .score-card{margin-top:0}
  .proof-grid{grid-template-columns:1fr 1fr}
  .quote-main{grid-column:span 2}
  .news-wrap{grid-template-columns:1fr;gap:32px}
  .guard-wrap{grid-template-columns:1fr;gap:20px}
  .guard-items{grid-template-columns:1fr 1fr}
  .cta-panel{grid-template-columns:1fr;padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  main{padding-top:60px}
  .sec{padding:56px 0}
  .nav{height:60px}
  .nav-links{display:none}
  .burger{display:inline-flex}
  .nav-actions .btn{display:none}
  .hero{padding:40px 0 56px}
  .hero-h1{font-size:38px;margin-top:16px}
  .hero-sub{font-size:16px}
  .hero-grid{grid-template-columns:1fr;margin-top:36px}
  .hero-points.side-right{grid-column:auto;grid-template-columns:1fr}
  .stage{order:-1}
  .pillars{grid-template-columns:1fr}
  .pillar{border-right:0;border-bottom:1px solid var(--line);padding:24px 0}
  .pillar:last-child{border-bottom:0}
  .pillar-idx{font-size:34px}
  .scene-wrap{grid-template-columns:1fr;gap:20px}
  .tab-list{flex-direction:row;overflow-x:auto;border-left:0;border-bottom:1px solid var(--line);gap:4px}
  .tab-btn{width:auto;flex:0 0 auto;border-left:0;border-bottom:2px solid transparent;padding:12px 14px;font-size:14px}
  .tab-btn[aria-selected="true"]{border-left:0;border-bottom-color:var(--primary);background:transparent}
  .tab-btn small{display:none}
  .scene-points{grid-template-columns:1fr;gap:12px}
  .topic-grid{grid-template-columns:1fr}
  .topic-lg{grid-column:auto}
  .topic-lg .thumb{aspect-ratio:16/10}
  .proof-grid{grid-template-columns:1fr}
  .quote-main{grid-column:auto}
  .compare-row{grid-template-columns:1fr;padding:14px 18px;gap:6px}
  .compare-row > span{padding:0;font-size:15px}
  .compare-head{display:none}
  .c-dim{color:var(--primary);font-size:12px;letter-spacing:.08em;font-weight:700}
  .c-right{border-left:2px solid var(--primary);padding-left:10px;background:rgba(242,92,42,.05)}
  .stats{grid-template-columns:1fr 1fr}
  .stat{border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
  .stat:nth-child(2n){border-right:0}
  .stat:nth-child(n+3){border-bottom:0}
  .timeline{grid-template-columns:1fr}
  .faq-wrap{grid-template-columns:1fr;gap:24px}
  .steps{grid-template-columns:1fr;gap:0}
  .step{padding:20px 0;border-bottom:1px solid var(--line)}
  .step::after{display:none}
  .guard-items{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-panel{padding:26px 22px}
  .cta-panel h2{font-size:26px}
  .sticky-cta{height:56px}
  .h2{font-size:28px}
}
@media (max-width:520px){
  .wrap{padding:0 18px}
  .hero-h1{font-size:34px}
  .h2{font-size:26px}
  .btn{width:100%}
  .hero-cta .btn,.cta-actions .btn{width:100%}
  .sticky-cta .btn{width:auto}
  .footer-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .stat{border-right:0;border-bottom:1px solid var(--line)}
  .stat:last-child{border-bottom:0}
  .news-main h3{font-size:19px}
  .quote{padding:20px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: index */
*,*::before,*::after{box-sizing:border-box}
:root{
  --td-bg:#0D0C0B;
  --td-surface:#171513;
  --td-surface-2:#201C19;
  --td-primary:#F26A3D;
  --td-accent:#B8E35A;
  --td-highlight:#FFD166;
  --td-text:#F4EFE6;
  --td-muted:#B9AFA2;
  --td-line:#2A2724;
  --td-radius:10px;
  --td-shadow:0 24px 50px -34px rgba(0,0,0,.95);
}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--td-bg);color:var(--td-text);font:400 16px/1.82 "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;overflow-x:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{background:none;border:0;font:inherit;color:inherit;cursor:pointer}
h1,h2,h3{margin:0;font-weight:800;line-height:1.3;letter-spacing:.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--td-highlight);outline-offset:2px}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px}
main{padding-bottom:104px}

/* 通用组件 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 24px;border:1px solid transparent;border-radius:6px;font-size:15px;font-weight:600;letter-spacing:.3px;transition:background .18s,color .18s,border-color .18s,transform .18s}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--td-primary);color:#1B0E08}
.btn-primary:hover{background:#FF855A;transform:translateY(-1px)}
.btn-ghost{border-color:var(--td-line);color:var(--td-text);background:transparent}
.btn-ghost:hover{border-color:var(--td-primary);background:rgba(242,106,61,.1)}
.tag{display:inline-block;padding:3px 9px;border:1px solid var(--td-line);border-radius:4px;font-size:12px;color:var(--td-muted);letter-spacing:.4px}
.eyebrow{font-size:12px;letter-spacing:.24em;color:var(--td-primary);font-weight:600;text-transform:uppercase}
.sec-head{margin-bottom:34px;max-width:760px}
.sec-kicker{display:inline-block;font-size:11px;letter-spacing:.26em;color:var(--td-primary);font-weight:600;margin-bottom:10px}
.sec-head h2{font-size:26px}
.sec-lead{margin-top:12px;color:var(--td-muted);font-size:15px;line-height:1.85}
.section{padding:56px 0;border-bottom:1px solid var(--td-line)}
.section-alt{background:var(--td-surface)}
.section-head-line{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px}
.more-link{font-size:14px;color:var(--td-muted);border-bottom:1px solid var(--td-line);padding-bottom:2px;transition:color .18s,border-color .18s}
.more-link:hover{color:var(--td-primary);border-color:var(--td-primary)}

/* 头部 */
.hdr{position:sticky;top:0;z-index:60;background:rgba(13,12,11,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--td-line)}
.hdr-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:66px}
.brand{display:flex;align-items:baseline;gap:8px;flex-shrink:0}
.brand-mark{font-size:19px;font-weight:800;letter-spacing:.5px}
.brand-sub{font-size:10px;letter-spacing:.2em;color:var(--td-muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.nav{display:none}
.nav-link{position:relative;display:block;font-size:15px;color:var(--td-muted);transition:color .18s}
.nav-link:hover{color:var(--td-text)}
.nav-link.active{color:var(--td-text);font-weight:600}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--td-primary)}
.hdr-actions{display:flex;align-items:center;gap:10px}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid var(--td-line);border-radius:6px;color:var(--td-muted);transition:color .18s,border-color .18s}
.icon-btn:hover{color:var(--td-text);border-color:var(--td-primary)}
.menu-btn{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;padding:0 10px;border:1px solid var(--td-line);border-radius:6px}
.menu-btn span{display:block;height:2px;background:var(--td-text);border-radius:2px}

/* 首屏 */
.hero{position:relative;overflow:hidden;padding:48px 0 60px;border-bottom:1px solid var(--td-line)}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/ee02996514c243da.jpg') center/cover no-repeat;opacity:.24}
.hero-bg::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% -10%,rgba(242,106,61,.22),transparent 60%),linear-gradient(180deg,rgba(13,12,11,.6) 0%,rgba(13,12,11,.92) 60%,var(--td-bg) 100%)}
.hero-mesh{position:absolute;inset:0;background-image:linear-gradient(rgba(244,239,230,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(244,239,230,.045) 1px,transparent 1px);background-size:54px 54px;opacity:.7;pointer-events:none}
.hero-inner{position:relative;z-index:2;text-align:center}
.hero h1{font-size:34px;margin:16px auto 0;max-width:820px;letter-spacing:.4px}
.hero-lead{margin:18px auto 0;max-width:720px;color:var(--td-muted);font-size:15px;line-height:1.9}
.hero-cta{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:26px}
.hero-stage{display:grid;grid-template-columns:1fr;gap:18px;margin-top:44px;align-items:center}
.stage-col{display:grid;gap:14px;text-align:left}
.stage-point{border:1px solid var(--td-line);border-radius:var(--td-radius);background:rgba(23,21,19,.85);padding:16px 18px;transition:border-color .18s,transform .18s}
.stage-point:hover{border-color:var(--td-primary);transform:translateY(-2px)}
.stage-point h3{font-size:15px;margin-bottom:6px}
.stage-point p{font-size:13px;color:var(--td-muted);line-height:1.75}
.sp-num{display:block;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;color:var(--td-primary);letter-spacing:.16em;margin-bottom:6px}
.stage-shot{position:relative;border:1px solid var(--td-line);border-radius:12px;overflow:hidden;background:var(--td-surface-2);box-shadow:var(--td-shadow)}
.stage-shot img{width:100%;aspect-ratio:16/10;object-fit:cover}
.shot-tag{position:absolute;left:14px;bottom:14px;padding:5px 12px;border-radius:4px;background:rgba(13,12,11,.86);border:1px solid var(--td-line);font-size:12px;color:var(--td-highlight);font-weight:600;letter-spacing:.4px}
.hero-metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;margin-top:34px;border:1px solid var(--td-line);border-radius:var(--td-radius);overflow:hidden;background:var(--td-line);position:relative;z-index:2}
.hero-metrics div{background:var(--td-surface);padding:16px 12px;text-align:center}
.hero-metrics b{display:block;font-size:24px;font-weight:800;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--td-text)}
.hero-metrics span{font-size:12px;color:var(--td-muted);letter-spacing:.4px}

/* 卖点三连 */
.trio{display:grid;grid-template-columns:1fr;gap:16px}
.trio-item{position:relative;background:var(--td-surface);border:1px solid var(--td-line);border-radius:var(--td-radius);padding:26px 24px;transition:border-color .2s,transform .2s,box-shadow .2s}
.trio-item:hover{border-color:var(--td-primary);transform:translateY(-2px);box-shadow:var(--td-shadow)}
.trio-num{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:40px;font-weight:700;color:rgba(242,106,61,.35);line-height:1;display:block;margin-bottom:14px}
.trio-kicker{font-size:12px;letter-spacing:.2em;color:var(--td-accent);font-weight:600;margin-bottom:10px}
.trio-item h3{font-size:20px;margin-bottom:12px}
.trio-item p{font-size:14px;color:var(--td-muted);line-height:1.85}
.trio-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}

/* 频道矩阵 */
.ch-grid{display:flex;gap:14px;overflow-x:auto;padding-bottom:10px;scroll-snap-type:x mandatory}
.ch-grid::-webkit-scrollbar{height:5px}
.ch-grid::-webkit-scrollbar-thumb{background:var(--td-line);border-radius:4px}
.ch-card{position:relative;flex:0 0 78%;scroll-snap-align:start;display:flex;flex-direction:column;background:var(--td-surface);border:1px solid var(--td-line);border-radius:var(--td-radius);overflow:hidden;transition:border-color .2s,transform .2s}
.ch-card:hover{border-color:var(--td-primary);transform:translateY(-2px)}
.ch-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.ch-main img{aspect-ratio:16/10}
.ch-body{padding:16px 18px 18px}
.ch-body h3{font-size:17px;display:flex;align-items:center;justify-content:space-between;gap:10px}
.ch-body h3::after{content:"→";color:var(--td-primary);font-size:15px}
.ch-body p{font-size:13px;color:var(--td-muted);margin-top:8px;line-height:1.75}
.ch-meta{display:inline-block;margin-top:12px;font-size:12px;color:var(--td-accent);letter-spacing:.4px}

/* 最新动态 */
.upd-list{border-top:1px solid var(--td-line)}
.upd-item{display:grid;grid-template-columns:64px 1fr;gap:14px;padding:18px 0;border-bottom:1px solid var(--td-line);align-items:start}
.upd-item time{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;color:var(--td-primary);letter-spacing:.5px;padding-top:2px}
.upd-item h3{font-size:16px;font-weight:600}
.upd-item p{font-size:13px;color:var(--td-muted);margin-top:6px;line-height:1.7}
.upd-item:hover h3{color:var(--td-primary)}

/* 专题横滑 */
.tp-rail{display:flex;gap:16px;overflow-x:auto;padding-bottom:12px;scroll-snap-type:x mandatory}
.tp-rail::-webkit-scrollbar{height:5px}
.tp-rail::-webkit-scrollbar-thumb{background:var(--td-line);border-radius:4px}
.tp-card{position:relative;flex:0 0 82%;scroll-snap-align:start;border:1px solid var(--td-line);border-radius:var(--td-radius);overflow:hidden;background:var(--td-surface);transition:border-color .2s,transform .2s}
.tp-card:hover{border-color:var(--td-primary);transform:translateY(-2px)}
.tp-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.tp-card-lg img{aspect-ratio:4/3}
.tp-badge{position:absolute;top:12px;left:12px;padding:3px 9px;border-radius:4px;background:rgba(242,106,61,.92);color:#1B0E08;font-size:11px;font-weight:700;letter-spacing:.5px}
.tp-body{padding:14px 16px 18px}
.tp-body h3{font-size:16px}
.tp-body p{font-size:12px;color:var(--td-muted);margin-top:8px;display:flex;justify-content:space-between;gap:10px}

/* 场景演示 */
.tabs{display:grid;grid-template-columns:1fr;gap:20px}
.tab-list{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px}
.tab-btn{flex:0 0 auto;min-height:44px;padding:0 18px;border:1px solid var(--td-line);border-radius:6px;font-size:14px;color:var(--td-muted);transition:.2s}
.tab-btn:hover{color:var(--td-text);border-color:var(--td-primary)}
.tab-btn.is-active{background:var(--td-surface-2);color:var(--td-text);border-color:var(--td-primary);font-weight:600}
.tab-panel{display:none}
.tab-panel.is-active{display:block}
.tab-panel img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--td-radius);border:1px solid var(--td-line)}
.tab-points{display:grid;gap:1px;margin-top:18px;background:var(--td-line);border:1px solid var(--td-line);border-radius:var(--td-radius);overflow:hidden}
.tab-points li{background:var(--td-surface);padding:14px 16px;font-size:13px;color:var(--td-muted);display:flex;gap:12px}
.tab-points li b{color:var(--td-primary);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}

/* 社会认同 */
.proof{display:grid;grid-template-columns:1fr;gap:22px}
.proof-score{border:1px solid var(--td-line);border-radius:var(--td-radius);background:var(--td-surface);padding:26px 22px;text-align:center}
.proof-score .big{font-size:56px;font-weight:800;line-height:1;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--td-highlight)}
.stars{display:flex;justify-content:center;gap:4px;margin:12px 0;color:var(--td-highlight);font-size:15px;letter-spacing:2px}
.proof-score p{font-size:13px;color:var(--td-muted)}
.proof-score .pct{margin-top:14px;padding-top:14px;border-top:1px solid var(--td-line);font-size:13px;color:var(--td-accent)}
.rev-rail{display:flex;gap:14px;overflow-x:auto;padding-bottom:10px;scroll-snap-type:x mandatory}
.rev-rail::-webkit-scrollbar{height:5px}
.rev-rail::-webkit-scrollbar-thumb{background:var(--td-line);border-radius:4px}
.rev-card{flex:0 0 84%;scroll-snap-align:start;background:var(--td-surface);border:1px solid var(--td-line);border-radius:var(--td-radius);padding:18px}
.rev-head{display:flex;align-items:center;gap:12px}
.rev-avatar{width:40px;height:40px;border-radius:50%;background:var(--td-surface-2);border:1px solid var(--td-line);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;color:var(--td-primary)}
.rev-head h3{font-size:14px;font-weight:600}
.rev-head span{display:block;font-size:11px;color:var(--td-muted);margin-top:2px}
.rev-card p{font-size:13px;color:var(--td-muted);margin-top:14px;line-height:1.8}
.rev-rate{display:inline-block;margin-top:12px;font-size:12px;padding:2px 8px;border-radius:4px;border:1px solid rgba(255,209,102,.35);color:var(--td-highlight)}

/* 对比表 */
.cmp-table{width:100%;border-collapse:collapse;font-size:14px;border:1px solid var(--td-line);border-radius:var(--td-radius);overflow:hidden}
.cmp-table th,.cmp-table td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--td-line);vertical-align:top}
.cmp-table thead th{background:var(--td-surface-2);font-size:13px;letter-spacing:.4px;color:var(--td-text)}
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table td:first-child{color:var(--td-text);font-weight:600;width:26%}
.cmp-table td:not(:first-child){color:var(--td-muted);font-size:13px}
.cmp-yes{color:var(--td-accent);font-weight:700;margin-right:6px}
.cmp-no{color:#7B7269;font-weight:700;margin-right:6px}
.cmp-cards{display:grid;gap:12px}
.cmp-card{background:var(--td-surface);border:1px solid var(--td-line);border-radius:var(--td-radius);padding:16px}
.cmp-card h3{font-size:15px;margin-bottom:10px}
.cmp-card dl{margin:0;display:grid;gap:8px;font-size:13px}
.cmp-card dt{color:var(--td-accent);font-weight:600}
.cmp-card dd{margin:0;color:var(--td-muted)}

/* 资讯 */
.news-grid{display:grid;grid-template-columns:1fr;gap:20px}
.news-main{border:1px solid var(--td-line);border-radius:var(--td-radius);overflow:hidden;background:var(--td-surface);transition:border-color .2s,transform .2s}
.news-main:hover{border-color:var(--td-primary);transform:translateY(-2px)}
.news-main img{width:100%;aspect-ratio:16/9;object-fit:cover}
.news-main-body{padding:18px 20px 22px}
.news-main-body h3{font-size:18px;margin:10px 0}
.news-main-body p{font-size:13px;color:var(--td-muted);line-height:1.8}
.news-meta{display:flex;flex-wrap:wrap;gap:12px;font-size:12px;color:var(--td-muted);margin-top:12px}
.news-list{display:grid;gap:1px;background:var(--td-line);border:1px solid var(--td-line);border-radius:var(--td-radius);overflow:hidden}
.news-item{background:var(--td-surface);padding:16px 18px;display:flex;justify-content:space-between;gap:14px;align-items:start;transition:background .2s}
.news-item:hover{background:var(--td-surface-2)}
.news-item h3{font-size:15px;font-weight:600;line-height:1.6}
.news-item p{font-size:12px;color:var(--td-muted);margin-top:6px}
.news-item .arrow{color:var(--td-primary);flex-shrink:0}

/* 创作者 */
.creator{display:grid;grid-template-columns:1fr;gap:26px}
.steps{counter-reset:s;display:grid;gap:14px;margin-top:22px}
.steps li{display:grid;grid-template-columns:38px 1fr;gap:14px;align-items:start}
.steps li::before{counter-increment:s;content:"0" counter(s);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;font-weight:700;color:var(--td-primary);border:1px solid var(--td-line);border-radius:4px;padding:5px 0;text-align:center}
.steps h3{font-size:15px;margin-bottom:4px}
.steps p{font-size:13px;color:var(--td-muted);line-height:1.75}
.creator-side{background:var(--td-surface);border:1px solid var(--td-line);border-radius:var(--td-radius);padding:22px}
.creator-side img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:8px;margin-bottom:18px}
.benefit{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}

/* 会员 */
.member-bar{display:grid;grid-template-columns:1fr;gap:14px;border:1px solid var(--td-line);border-radius:var(--td-radius);overflow:hidden;background:var(--td-surface)}
.plan{padding:24px 22px;position:relative;border-bottom:1px solid var(--td-line)}
.plan:last-child{border-bottom:0}
.plan-tag{position:absolute;top:18px;right:18px;padding:2px 8px;border-radius:4px;background:rgba(184,227,90,.16);color:var(--td-accent);font-size:11px;font-weight:700;letter-spacing:.4px}
.plan h3{font-size:16px;color:var(--td-muted);font-weight:600}
.price{font-size:38px;font-weight:800;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;line-height:1.2;margin:8px 0 4px}
.price small{font-size:14px;color:var(--td-muted);font-weight:400;margin-left:4px}
.plan ul{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.plan li{font-size:12px;color:var(--td-muted);border:1px solid var(--td-line);border-radius:4px;padding:3px 9px}
.plan .btn{margin-top:18px;width:100%}

/* 下载 */
.dl{display:grid;grid-template-columns:1fr;gap:24px;align-items:center}
.qr{width:168px;height:168px;border:1px solid var(--td-line);border-radius:var(--td-radius);background:var(--td-surface);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;position:relative;margin:0 auto}
.qr::before{content:"";width:88px;height:88px;border-radius:6px;background:repeating-linear-gradient(45deg,var(--td-surface-2) 0 6px,var(--td-line) 6px 12px)}
.qr span{font-size:12px;color:var(--td-muted);letter-spacing:.5px}
.qr-corner{position:absolute;top:-1px;right:-1px;padding:2px 8px;background:var(--td-primary);color:#1B0E08;font-size:11px;font-weight:700;border-radius:0 9px 0 6px}
.dev-list{display:grid;gap:1px;background:var(--td-line);border:1px solid var(--td-line);border-radius:var(--td-radius);overflow:hidden}
.dev-item{background:var(--td-surface);padding:15px 18px;display:flex;justify-content:space-between;align-items:center;gap:14px;transition:background .2s}
.dev-item:hover{background:var(--td-surface-2)}
.dev-item h3{font-size:15px}
.dev-item span{font-size:12px;color:var(--td-muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace}

/* 版本更新 */
.log{display:grid;gap:1px;background:var(--td-line);border:1px solid var(--td-line);border-radius:var(--td-radius);overflow:hidden}
.log li{background:var(--td-surface);padding:16px 18px;display:grid;grid-template-columns:78px 1fr;gap:14px;align-items:start}
.log b{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;color:var(--td-accent);letter-spacing:.3px}
.log p{font-size:13px;color:var(--td-muted);line-height:1.75}

/* 安全 */
.safe-grid{display:grid;grid-template-columns:1fr;gap:1px;background:var(--td-line);border:1px solid var(--td-line);border-radius:var(--td-radius);overflow:hidden}
.safe-item{background:var(--td-surface);padding:20px 18px}
.safe-item i{display:inline-flex;width:26px;height:26px;border-radius:4px;background:rgba(184,227,90,.14);color:var(--td-accent);align-items:center;justify-content:center;font-style:normal;font-size:13px;font-weight:700;margin-bottom:12px}
.safe-item h3{font-size:15px;margin-bottom:6px}
.safe-item p{font-size:13px;color:var(--td-muted);line-height:1.72}

/* FAQ */
.faq{display:grid;grid-template-columns:1fr;gap:24px}
.faq-item{border:1px solid var(--td-line);border-radius:8px;background:var(--td-surface);margin-bottom:10px;overflow:hidden}
.faq-item summary{list-style:none;cursor:pointer;padding:15px 18px;font-size:15px;font-weight:600;display:flex;justify-content:space-between;gap:14px;align-items:center;transition:background .2s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";color:var(--td-primary);font-size:18px;line-height:1;font-weight:700}
.faq-item[open] summary{background:var(--td-surface-2)}
.faq-item[open] summary::after{content:"–"}
.faq-item p{padding:0 18px 16px;font-size:13.5px;color:var(--td-muted);line-height:1.8}

/* 帮助表单 */
.help{display:grid;grid-template-columns:1fr;gap:24px}
.help-card{background:var(--td-surface);border:1px solid var(--td-line);border-radius:var(--td-radius);padding:22px}
.help-card h3{font-size:16px;margin-bottom:12px}
.help-card ul{display:grid;gap:10px}
.help-card li{font-size:13px;color:var(--td-muted);display:flex;gap:10px}
.help-card li b{color:var(--td-primary);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}
.form{background:var(--td-surface);border:1px solid var(--td-line);border-radius:var(--td-radius);padding:22px;display:grid;gap:14px}
.field{display:grid;gap:7px}
.field label{font-size:13px;color:var(--td-muted);letter-spacing:.3px}
.field input,.field select,.field textarea{width:100%;background:#100E0C;border:1px solid var(--td-line);border-radius:6px;color:var(--td-text);font-size:14px;padding:11px 13px;transition:border-color .18s,box-shadow .18s}
.field textarea{min-height:96px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--td-primary);box-shadow:0 0 0 3px rgba(242,106,61,.22)}
.form .btn{width:100%}

/* 页脚 */
.ft{border-top:1px solid var(--td-line);background:var(--td-surface);padding:44px 0 26px}
.ft-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px 20px}
.ft-brand .brand-mark{font-size:18px}
.ft-brand p{font-size:13px;color:var(--td-muted);margin-top:10px;line-height:1.8}
.ft-col h4{font-size:13px;letter-spacing:.1em;color:var(--td-text);margin:0 0 12px;font-weight:700}
.ft-col li{margin-bottom:9px}
.ft-col a{font-size:13px;color:var(--td-muted);transition:color .18s}
.ft-col a:hover{color:var(--td-primary)}
.ft-bottom{margin-top:30px;padding-top:18px;border-top:1px solid var(--td-line);font-size:12px;color:#8B8278;display:flex;flex-wrap:wrap;gap:8px 18px;justify-content:space-between}

/* 底部固定转化条 */
.float-cta{position:fixed;left:0;right:0;bottom:0;z-index:50;background:rgba(20,18,16,.97);backdrop-filter:blur(12px);border-top:1px solid var(--td-line)}
.fc-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;padding-top:9px;padding-bottom:9px}
.fc-left{display:none;align-items:center;gap:12px}
.fc-brand{font-size:14px;font-weight:800;letter-spacing:.4px}
.fc-tag{font-size:12px;color:var(--td-muted);border:1px solid var(--td-line);border-radius:4px;padding:2px 8px}
.fc-btns{display:flex;gap:10px;width:100%}
.fc-btns .btn{flex:1}

@media (min-width:768px){
  .container{padding-left:32px;padding-right:32px}
  .hero h1{font-size:42px}
  .sec-head h2{font-size:32px}
  .hero-metrics{grid-template-columns:repeat(4,1fr)}
  .trio{grid-template-columns:1fr 1fr}
  .trio-item-main{grid-column:1 / -1}
  .ch-card{flex:0 0 46%}
  .tp-card{flex:0 0 46%}
  .rev-card{flex:0 0 46%}
  .upd-item{grid-template-columns:88px 1fr}
  .cmp-cards{display:none}
  .cmp-table{display:table}
  .news-grid{grid-template-columns:1fr 1fr}
  .creator{grid-template-columns:1.15fr .85fr}
  .member-bar{grid-template-columns:1fr 1fr}
  .plan{border-bottom:0;border-right:1px solid var(--td-line)}
  .plan:last-child{border-right:0}
  .dl{grid-template-columns:auto 1fr}
  .safe-grid{grid-template-columns:1fr 1fr}
  .help{grid-template-columns:1fr 1fr}
  .ft-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}
  .faq{grid-template-columns:.8fr 1.2fr}
}
@media (min-width:1024px){
  .container{padding-left:48px;padding-right:48px}
  main{padding-bottom:86px}
  .nav{display:flex;align-items:center;gap:26px}
  .menu-btn{display:none}
  .hdr-inner{height:72px}
  .hero{padding:72px 0 84px}
  .hero h1{font-size:52px}
  .hero-lead{font-size:16px}
  .hero-stage{grid-template-columns:.85fr 1.6fr .85fr;gap:20px;text-align:left}
  .section{padding:82px 0}
  .sec-head h2{font-size:36px}
  .sec-head{margin-bottom:44px}
  .trio{grid-template-columns:1.5fr 1fr 1fr;gap:18px}
  .trio-item-main{grid-column:auto}
  .trio-item{padding:32px 28px}
  .ch-grid{display:grid;grid-template-columns:repeat(4,1fr);overflow:visible;padding-bottom:0;gap:16px}
  .ch-card{grid-column:span 2}
  .ch-main{grid-column:span 2;grid-row:span 2}
  .ch-card:nth-child(4),.ch-card:nth-child(5),.ch-card:nth-child(6),.ch-card:nth-child(7){grid-column:span 1}
  .ch-card:nth-child(4) img,.ch-card:nth-child(5) img,.ch-card:nth-child(6) img,.ch-card:nth-child(7) img{aspect-ratio:4/3}
  .ch-card:nth-child(4) .ch-body p,.ch-card:nth-child(5) .ch-body p,.ch-card:nth-child(6) .ch-body p,.ch-card:nth-child(7) .ch-body p{display:none}
  .tp-rail{overflow:visible;padding-bottom:0;gap:18px}
  .tp-card{flex:1 1 0}
  .tp-card-lg{flex:1.6 1 0}
  .tp-rail .tp-card img{aspect-ratio:16/9}
  .tp-card-lg img{aspect-ratio:16/10}
  .tabs{grid-template-columns:260px 1fr;gap:28px}
  .tab-list{flex-direction:column;overflow:visible;gap:8px}
  .tab-btn{width:100%;justify-content:flex-start;text-align:left;padding:14px 18px;border-radius:6px}
  .tab-points{grid-template-columns:repeat(3,1fr)}
  .proof{grid-template-columns:.62fr 1.38fr;gap:20px}
  .rev-rail{overflow:visible;padding-bottom:0}
  .rev-card{flex:1 1 0}
  .cmp-table{display:table}
  .cmp-table td:first-child{position:sticky;left:0;background:var(--td-surface)}
  .news-grid{grid-template-columns:1.3fr 1fr;gap:24px}
  .dl{grid-template-columns:auto 1fr;gap:36px}
  .qr{width:188px;height:188px}
  .safe-grid{grid-template-columns:repeat(4,1fr)}
  .help{grid-template-columns:.75fr 1.25fr;gap:32px}
  .fc-left{display:flex}
  .fc-btns{width:auto}
  .fc-btns .btn{flex:none}
}
@media (max-width:1023px){
  .nav{position:fixed;left:0;right:0;top:66px;bottom:0;z-index:55;display:none;flex-direction:column;gap:0;padding:20px 20px 120px;overflow-y:auto;background:var(--td-bg);border-top:1px solid var(--td-line)}
  .nav.is-open{display:flex}
  .nav-link{padding:16px 0;font-size:17px;color:var(--td-text);border-bottom:1px solid var(--td-line)}
  .nav-link.active::after{display:none}
  .nav-link.active{color:var(--td-primary)}
  .cmp-table{display:none}
}
@media (max-width:519px){
  .hero h1{font-size:32px}
  .sec-head h2{font-size:24px}
  .brand-sub{display:none}
  .upd-item{grid-template-columns:1fr;gap:6px}
  .log li{grid-template-columns:1fr;gap:6px}
  .ft-grid{grid-template-columns:1fr 1fr}
}