/* roulang page: index */
:root{
  --brand:#103C34;--brand-deep:#0A2A25;--accent:#E0592F;--accent-deep:#C24A24;
  --gold:#C9A227;--ok:#2E7D5B;
  --bg:#F6F3EC;--surface:#FFFFFF;--surface-2:#EDE8DC;
  --line:#E2DCCD;--ink:#16211E;--muted:#5B6763;
  --r:12px;--r-btn:10px;--r-chip:6px;
  --sh:0 1px 2px rgba(16,33,30,.06),0 10px 28px rgba(16,33,30,.08);
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --maxw:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{
  margin:0;padding-bottom:92px;background:var(--bg);color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
h1,h2,h3{margin:0;letter-spacing:.2px}
h2{font-size:clamp(1.5rem,2.4vw,2rem);font-weight:700;line-height:1.3}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 16px}

/* 按钮 */
.btn-main,.btn-line,.btn-ghost,.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;transition:background .18s ease,color .18s ease,transform .18s ease,border-color .18s ease;
}
.btn-main{background:var(--accent);color:#fff}
.btn-main:hover{background:var(--accent-deep);color:#fff;transform:translateY(1px)}
.btn-line{background:var(--surface);border-color:var(--brand);color:var(--brand)}
.btn-line:hover{background:#E7EFE9;color:var(--brand-deep)}
.btn-ghost{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.5);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff}
.btn-soft{background:var(--surface-2);color:var(--brand);border-color:var(--line)}
.btn-soft:hover{background:#E4DECE;color:var(--brand-deep)}

/* 头部导航 */
.site-header{position:sticky;top:0;z-index:60;background:var(--bg);border-bottom:1px solid transparent;transition:box-shadow .18s ease,border-color .18s ease}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 8px 20px rgba(16,33,30,.07)}
.nav-wrap{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:36px;height:36px;border-radius:9px;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800;font-size:17px}
.brand-txt strong{display:block;font-size:15px;line-height:1.2;font-weight:800;color:var(--ink)}
.brand-txt small{display:block;font-size:11px;line-height:1.5;color:var(--muted);letter-spacing:.4px}
.nav-links{display:flex;gap:2px;margin-left:auto}
.nav-links a{padding:8px 11px;border-radius:8px;font-size:14px;font-weight:600;color:var(--muted);transition:color .18s ease,background .18s ease}
.nav-links a:hover{color:var(--brand);background:var(--surface-2)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none}
.nav-actions .btn-main{min-height:40px;padding:0 16px;font-size:14px}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--brand);font-size:18px;line-height:1;align-items:center;justify-content:center;cursor:pointer}

/* 板块通用 */
section{padding:clamp(56px,7vw,96px) 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px}
.sec-head>div{max-width:720px}
.sec-desc{margin-top:10px;color:var(--muted);font-size:15px}
.eyebrow{display:inline-block;font-family:var(--mono);font-size:12px;letter-spacing:2px;color:var(--gold);font-weight:700;margin-bottom:10px}
.grid{display:grid;gap:24px}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}

/* 首屏 */
.hero{position:relative;overflow:hidden;background:var(--brand-deep);color:#fff;padding:52px 0 0}
.hero-bg{position:absolute;inset:0;background:url(/assets/images/f4bbaa6a3aab9fdb.jpg) center/cover no-repeat;opacity:.34}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(112deg,rgba(10,42,37,.95) 0%,rgba(10,42,37,.82) 52%,rgba(10,42,37,.46) 100%)}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center;padding-bottom:52px}
.badge-ember{display:inline-flex;align-items:center;gap:8px;background:rgba(224,89,47,.16);border:1px solid rgba(224,89,47,.62);color:#FFD9C9;font-size:13px;font-weight:700;padding:6px 12px;border-radius:var(--r-chip);margin-bottom:18px}
.badge-ember::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.hero h1{font-size:clamp(2.1rem,4.2vw,3.4rem);font-weight:800;line-height:1.2;color:#fff}
.hero h1 .hl{background:rgba(201,162,39,.3);border-bottom:3px solid var(--gold);padding:0 6px;border-radius:4px}
.hero-sub{margin-top:16px;font-size:clamp(1rem,1.6vw,1.15rem);color:#E6EEE9;font-weight:600}
.hero-desc{margin-top:12px;max-width:560px;color:rgba(255,255,255,.76);font-size:15px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.hero-panel{position:relative;background:#0E332C;border:1px solid rgba(255,255,255,.18);border-radius:16px;padding:20px;overflow:hidden}
.hero-panel::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:24px 24px;pointer-events:none}
.panel-head{position:relative;display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);font-weight:600;margin-bottom:16px}
.panel-head .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(46,125,91,.22)}
.panel-time{margin-left:auto;color:var(--gold);font-size:12px}
.panel-metrics{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:16px}
.pm{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:10px;padding:10px 8px;text-align:center}
.pm-num{display:block;font-size:17px;font-weight:700;color:#fff;line-height:1.4}
.pm-lab{display:block;font-size:11px;color:rgba(255,255,255,.6);margin-top:2px}
.panel-thumbs{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.panel-thumbs img{aspect-ratio:3/4;object-fit:cover;border-radius:8px;border:1px solid rgba(255,255,255,.16)}
.hero-strip{position:relative;z-index:2;border-top:1px solid rgba(255,255,255,.16)}
.strip-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;padding:18px 16px}
.sd{display:flex;align-items:baseline;gap:8px;font-size:13px;color:rgba(255,255,255,.62)}
.sd span{font-size:19px;font-weight:700;color:#fff}
.sd em{font-style:normal}

/* 统计条 */
#stats{background:var(--bg);padding-top:clamp(40px,5vw,64px);padding-bottom:clamp(40px,5vw,64px)}
.stat-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px}
.stat-num{display:block;font-size:clamp(1.6rem,3vw,2.1rem);font-weight:700;color:var(--brand);line-height:1.2}
.stat-lab{display:block;font-size:13px;color:var(--muted);margin-top:6px}

/* 卖点三连 */
#highlights{background:var(--surface)}
.hl-item{padding:0 24px;border-left:1px solid var(--line)}
.hl-item:first-child{border-left:0;padding-left:0}
.hl-no{font-family:var(--mono);font-size:13px;color:var(--gold);font-weight:700;letter-spacing:1px}
.hl-item h3{font-size:18px;font-weight:700;margin:8px 0 10px}
.hl-item p{font-size:14.5px;color:var(--muted);margin:0}

/* 热播卡片 */
#hot{background:var(--bg)}
.v-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.v-card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--sh)}
.v-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2)}
.v-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .18s ease}
.v-card:hover .v-thumb img{transform:scale(1.02)}
.chip{display:inline-block;font-size:11px;font-weight:700;padding:2px 8px;border-radius:var(--r-chip);line-height:1.7;letter-spacing:.4px}
.chip-q{position:absolute;top:8px;right:8px;background:rgba(10,42,37,.86);color:#F2E9D2}
.chip-state{background:#E7EFE9;color:var(--brand)}
.chip-cat{background:var(--surface-2);color:var(--muted)}
.v-body{padding:12px 14px 14px}
.card-title{font-size:15px;font-weight:700;line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.v-meta{margin:6px 0 0;font-size:12.5px;color:var(--muted)}

/* 最新更新 */
#latest{background:var(--surface-2)}
.l-card{display:grid;grid-template-columns:180px 1fr;gap:16px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:12px;transition:transform .18s ease,box-shadow .18s ease}
.l-card:hover{transform:translateY(-2px);box-shadow:var(--sh)}
.l-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:8px}
.l-body{min-width:0}
.l-time{margin:8px 0 0;font-size:12.5px;color:var(--muted)}

/* 场景演示 */
#scene{background:var(--surface)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative}
.step{position:relative}
.step-screen{aspect-ratio:16/10;border:1px solid var(--line);border-radius:var(--r);background:var(--surface-2);overflow:hidden;display:grid;place-items:center;margin-bottom:14px}
.step-screen img{width:100%;height:100%;object-fit:cover;opacity:.9}
.step-no{font-family:var(--mono);font-size:12px;color:var(--gold);font-weight:700;letter-spacing:1px}
.step h3{font-size:16px;font-weight:700;margin:6px 0 8px}
.step p{font-size:14px;color:var(--muted);margin:0}
.steps::after{content:"";position:absolute;top:26%;left:33%;right:33%;border-top:1px dashed var(--line);z-index:0}

/* 分类频道 */
#channels{background:var(--bg)}
.ch-item{display:flex;align-items:center;gap:14px;background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:20px;position:relative;transition:background .18s ease,border-color .18s ease}
.ch-item::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;background:transparent;transition:background .18s ease}
.ch-item:hover{background:var(--surface);border-color:#CFC7B3}
.ch-item:hover::before{background:var(--brand)}
.ch-body{min-width:0;flex:1}
.ch-body h3{font-size:17px;font-weight:700;margin-bottom:6px}
.ch-body p{font-size:14px;color:var(--muted);margin:0}
.ch-arrow{color:var(--brand);font-size:18px;flex:none}

/* 播放榜 */
#rank{background:var(--surface)}
.rank-cols{display:grid;grid-template-columns:1fr 1fr;gap:0 40px}
.rank-list{list-style:none;margin:0;padding:0}
.rank-row{display:grid;grid-template-columns:48px 1fr 120px 96px auto;gap:12px;align-items:center;padding:12px 8px;border-bottom:1px solid var(--line);transition:background .18s ease}
.rank-row:hover{background:#FAF8F2}
.rank-no{font-family:var(--mono);font-size:15px;font-weight:700;color:var(--muted)}
.rank-row:nth-child(-n+3) .rank-no{color:var(--gold)}
.rank-name{font-size:15px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rank-bar{height:6px;border-radius:3px;background:var(--surface-2);overflow:hidden}
.rank-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),#2E7D5B);border-radius:3px}
.rank-views{font-size:13px;color:var(--muted);text-align:right}

/* 社会认同 */
#proof{background:var(--bg)}
.score-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:26px;text-align:center}
.score-num{display:block;font-size:clamp(2.6rem,5vw,3.4rem);font-weight:700;color:var(--brand);line-height:1.1}
.score-stars{color:var(--gold);font-size:17px;letter-spacing:3px;margin:8px 0}
.score-lab{font-size:13px;color:var(--muted)}
.review{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px}
.review p{font-size:14.5px;margin:0 0 12px}
.review-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted)}

/* 对比表 */
#compare{background:var(--surface)}
.cmp-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.cmp-table{width:100%;min-width:620px;border-collapse:collapse;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;font-size:14.5px}
.cmp-table caption{caption-side:top;text-align:left;font-size:13px;color:var(--muted);padding-bottom:12px}
.cmp-table th,.cmp-table td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
.cmp-table thead th{background:#E7EFE9;color:var(--brand-deep);font-weight:700;font-size:14px}
.cmp-table thead th.col-us{background:#FBE9E2;color:var(--accent-deep)}
.cmp-table tbody tr:nth-child(even){background:#FBF9F4}
.cmp-table td.col-us{background:#FDF1EC;color:var(--brand-deep);font-weight:600}
.cmp-table tbody tr:last-child td{border-bottom:0}
.mark-ok{color:var(--ok);font-weight:700;margin-right:6px}
.mark-no{color:#A7A296;margin-right:6px}

/* 视频资讯 */
#news{background:var(--bg)}
.n-card{display:grid;grid-template-columns:132px 1fr;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:12px;align-items:center;transition:transform .18s ease,box-shadow .18s ease}
.n-card:hover{transform:translateY(-2px);box-shadow:var(--sh)}
.n-thumb{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:8px}
.n-card h3{font-size:15px;font-weight:700;line-height:1.55;margin-bottom:8px}
.n-date{font-size:12.5px;color:var(--muted)}

/* 专题 */
#topics{background:var(--surface)}
.topic{position:relative;overflow:hidden;border-radius:var(--r);border:1px solid var(--line);min-height:250px;display:flex;align-items:flex-end;color:#fff;padding:22px}
.topic-bg{position:absolute;inset:0;background-size:cover;background-position:center;transition:transform .4s ease}
.topic:hover .topic-bg{transform:scale(1.03)}
.topic::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,42,37,.15) 0%,rgba(10,42,37,.9) 100%)}
.topic-inner{position:relative;z-index:2}
.topic-tag{display:inline-block;background:rgba(201,162,39,.92);color:#241E06;font-size:11.5px;font-weight:700;padding:3px 10px;border-radius:var(--r-chip);margin-bottom:10px}
.topic h3{font-size:19px;font-weight:700;margin-bottom:8px}
.topic p{font-size:13.5px;color:rgba(255,255,255,.8);margin:0 0 12px}
.topic-link{font-size:13.5px;font-weight:700;color:#fff;border-bottom:2px solid var(--gold);padding-bottom:2px}

/* 异议拆解 */
#objection{background:var(--bg)}
.obj-row{display:grid;grid-template-columns:5fr 7fr;gap:24px;padding:18px 0;border-bottom:1px solid var(--line)}
.obj-row:last-child{border-bottom:0}
.obj-q{font-size:15px;font-weight:600;color:var(--muted)}
.obj-a{font-size:15px}
.obj-a::before{content:"✓";color:var(--ok);font-weight:800;margin-right:8px}

/* FAQ */
#faq{background:var(--surface)}
.faq .accordion-item{border:1px solid var(--line);border-radius:8px;overflow:hidden;margin-bottom:12px;background:var(--surface)}
.faq .accordion-button{font-size:16px;font-weight:700;color:var(--ink);background:var(--surface);box-shadow:none;padding:16px 18px;border-radius:0}
.faq .accordion-button:not(.collapsed){color:var(--brand);background:var(--surface);box-shadow:inset 3px 0 0 var(--accent)}
.faq .accordion-button:focus{box-shadow:inset 3px 0 0 var(--accent);border-color:transparent}
.faq .accordion-body{font-size:14.5px;color:var(--muted);padding:0 18px 18px}

/* 保障条 */
#guarantee{background:#E7EFE9;padding-top:clamp(36px,4.5vw,56px);padding-bottom:clamp(36px,4.5vw,56px)}
.gt-item{display:flex;gap:12px;align-items:flex-start}
.gt-no{flex:none;width:26px;height:26px;border-radius:6px;background:var(--brand);color:#fff;font-size:12px;font-weight:700;display:grid;place-items:center;font-family:var(--mono)}
.gt-item h4{font-size:15px;font-weight:700;margin:0 0 4px}
.gt-item p{font-size:13.5px;color:var(--muted);margin:0}

/* 页脚 */
.site-footer{background:var(--brand-deep);color:#D8DFDA;padding:52px 0 24px}
.f-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.site-footer h5{font-size:13px;font-weight:700;color:#fff;margin:0 0 14px;letter-spacing:1px}
.site-footer p{font-size:13.5px;color:rgba(255,255,255,.62);margin:0 0 10px}
.site-footer a{color:rgba(255,255,255,.72);font-size:13.5px;display:block;padding:4px 0;transition:color .18s ease}
.site-footer a:hover{color:var(--gold)}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.f-brand .brand-mark{background:rgba(255,255,255,.12)}
.f-brand strong{color:#fff;font-size:15px;font-weight:800}
.f-line{border-top:1px solid rgba(255,255,255,.14);margin:32px 0 16px}
.f-copy{font-size:12.5px;color:rgba(255,255,255,.5);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* 底部固定转化条 */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:70;display:flex;align-items:center;gap:16px;background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh);padding:14px 16px;max-width:calc(100% - 32px)}
.float-cta p{margin:0;font-size:13.5px;font-weight:600;color:var(--ink)}
.float-cta .btn-main{min-height:40px;padding:0 16px;font-size:14px}

@media (max-width:1024px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-links.open{display:flex;position:absolute;left:0;right:0;top:100%;flex-direction:column;gap:2px;background:var(--surface);border-bottom:1px solid var(--line);padding:10px 16px 16px;box-shadow:var(--sh)}
  .nav-links.open a{padding:12px;font-size:15px}
  .hero-inner{grid-template-columns:1fr;gap:32px}
  .hero-panel{max-width:520px}
  .g4{grid-template-columns:repeat(3,minmax(0,1fr))}
  .f-grid{grid-template-columns:1fr 1fr}
  .rank-cols{grid-template-columns:1fr;gap:0}
  .obj-row{grid-template-columns:1fr;gap:8px}
  .steps::after{display:none}
}
@media (max-width:768px){
  body{padding-bottom:100px}
  .g4,.g3,.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:1fr;gap:20px}
  .step{display:grid;grid-template-columns:132px 1fr;gap:14px;align-items:center;border-left:2px solid var(--line);padding-left:16px}
  .step-screen{margin-bottom:0}
  .hl-item{border-left:0;padding:16px 0;border-top:1px solid var(--line)}
  .hl-item:first-child{border-top:0;padding-top:0}
  .strip-inner{grid-template-columns:repeat(2,1fr);gap:10px}
  .l-card{grid-template-columns:132px 1fr}
  .n-card{grid-template-columns:112px 1fr}
  .float-cta{left:0;right:0;bottom:0;border-radius:14px 14px 0 0;justify-content:space-between;max-width:100%;padding:10px 16px}
  .float-cta p{display:none}
  .f-grid{grid-template-columns:1fr}
  .rank-row{grid-template-columns:38px 1fr 84px auto;gap:10px}
  .rank-bar{display:none}
}
@media (max-width:520px){
  .wrap{padding:0 20px}
  .g4,.g3,.g2{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .v-body{padding:10px 10px 12px}
  .card-title{font-size:14px}
  .v-meta{font-size:12px}
  .stat-card{padding:16px}
  .brand-txt small{display:none}
  .hero{padding-top:36px}
  .hero-btns .btn-main,.hero-btns .btn-ghost{flex:1}
  .n-card{grid-template-columns:1fr;gap:10px}
  .n-thumb{aspect-ratio:16/9}
  .score-card{padding:20px}
  .rank-row{grid-template-columns:32px 1fr auto;gap:8px}
  .rank-views{display:none}
  .float-cta .btn-main,.float-cta .btn-line{flex:1;min-height:44px}
}