/* roulang page: index */
:root{
  --primary:#C8501E;
  --primary-dark:#A93F14;
  --primary-light:#FBEDE4;
  --ink:#2B211C;
  --paper:#FAF6EE;
  --card:#FFFFFF;
  --sand:#F3ECE0;
  --line:#E4D9C8;
  --moss:#5F7A63;
  --red:#D93A2B;
  --muted:#7A6C60;
  --radius:10px;
  --shadow:0 1px 2px rgba(43,33,28,.06);
  --shadow-hover:0 6px 18px rgba(43,33,28,.10);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --w:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--sans);
  font-size:15.5px;
  line-height:1.9;
  letter-spacing:.01em;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  padding-bottom:78px;
}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;margin:0;line-height:1.35}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:var(--w);margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:11px 22px;border-radius:8px;border:1.5px solid transparent;font-size:15px;font-weight:600;transition:background .16s ease,border-color .16s ease,color .16s ease,transform .16s ease}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px)}
.btn-outline{border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-light)}
.btn-sm{min-height:40px;padding:8px 16px;font-size:14px}

/* header */
.site-header{position:sticky;top:0;z-index:60;background:rgba(250,246,238,.94);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:border-color .2s ease,box-shadow .2s ease}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:0 2px 12px rgba(43,33,28,.06)}
.header-inner{display:flex;align-items:center;gap:28px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:34px;height:34px;border-radius:9px;background:var(--primary);display:flex;align-items:center;justify-content:center}
.brand-name{font-family:var(--serif);font-size:18px;font-weight:700}
.header-panel{display:flex;align-items:center;gap:26px;flex:1}
.main-nav ul{display:flex;gap:22px}
.main-nav a{display:inline-block;font-size:14.5px;color:var(--muted);padding:6px 0;border-bottom:2px solid transparent;transition:color .16s ease,border-color .16s ease}
.main-nav a:hover{color:var(--primary);border-bottom-color:var(--primary)}
.header-actions{display:flex;align-items:center;gap:16px;margin-left:auto}
.ghost-link{font-size:14px;color:var(--muted);transition:color .16s ease}
.ghost-link:hover{color:var(--primary)}
.nav-toggle{display:none;align-items:center;justify-content:center;min-height:44px;min-width:64px;padding:0 14px;border:1px solid var(--line);border-radius:8px;background:var(--card);font-size:14px}

/* hero */
.hero{padding:58px 0 76px}
.hero-head{max-width:780px;margin:0 auto;text-align:center}
.hero-head h1{font-size:40px;line-height:1.3;margin:14px 0 18px}
.hl{color:var(--primary)}
.hero-sub{font-family:var(--serif);font-size:17px;font-weight:700;margin-bottom:12px}
.hero-desc{max-width:640px;margin:0 auto 28px;color:var(--muted)}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-stage{display:grid;grid-template-columns:180px minmax(0,1fr) 180px;gap:22px;align-items:center;margin-top:52px}
.hero-shot{margin:0;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--sand);box-shadow:0 10px 30px rgba(43,33,28,.10)}
.hero-shot img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-points{display:flex;flex-direction:column;gap:14px}
.hero-points li{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow)}
.hero-points strong{display:block;font-family:var(--serif);font-size:20px;color:var(--primary);line-height:1.25}
.hero-points span{font-size:13px;color:var(--muted)}

/* section */
.section{padding:76px 0;border-top:1px solid var(--line)}
.section--alt{background:var(--sand)}
.section-label{font-size:12.5px;font-weight:600;letter-spacing:.16em;color:var(--primary);margin-bottom:10px}
.section h2{font-size:24px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px}
.section-note{font-size:13px;color:var(--muted);margin:0}

/* pain */
.pain-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;margin-top:32px}
.pain-list li{border-left:2px solid var(--line);padding-left:20px}
.pain-list h3{font-size:17px;margin-bottom:8px}
.pain-list p{color:var(--muted);font-size:14.5px}

/* features */
.feature-list{margin-top:26px;border-top:1px solid var(--line)}
.feature-list li{display:flex;gap:28px;padding:28px 0;border-bottom:1px solid var(--line)}
.feature-num{flex:0 0 66px;font-family:var(--serif);font-size:32px;color:var(--primary);line-height:1.1}
.feature-body h3{font-size:18px;margin-bottom:8px}
.feature-body p{color:var(--muted);max-width:680px}

/* live cards */
.live-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
.live-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}
.live-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(200,80,30,.3)}
.card-cover{position:relative;background:var(--sand)}
.card-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.badge{font-size:12px;line-height:1;font-weight:600;padding:5px 8px;border-radius:4px}
.badge-live{position:absolute;top:10px;left:10px;background:var(--red);color:#fff}
.badge-soon{background:var(--moss);color:#fff;display:inline-block}
.card-body{padding:14px 16px 16px}
.card-body h3{font-family:var(--sans);font-size:15.5px;font-weight:600;line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:8px 0 0;font-size:13px;color:var(--muted)}
.tag{background:var(--sand);color:var(--ink);border-radius:4px;padding:2px 8px;font-size:12px;white-space:nowrap}
.num{color:var(--primary);font-weight:600;white-space:nowrap}
.soon-time{color:var(--moss);font-weight:600;font-size:13px;white-space:nowrap}
.soon-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}

/* scenes */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;padding:34px 0;border-top:1px solid var(--line)}
.scene:first-of-type{border-top:0;padding-top:0}
.scene:last-of-type{padding-bottom:0}
.scene-media{margin:0;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--sand)}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.scene--flip .scene-media{order:2}
.scene h3{font-size:19px;margin-bottom:10px}
.scene p{color:var(--muted);font-size:15px;max-width:520px}

/* channels */
.channel-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px}
.channel-list li{border-bottom:1px solid var(--line)}
.channel-list a{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 0;min-height:56px}
.channel-info strong{display:block;font-family:var(--serif);font-size:17px}
.channel-info span{font-size:13.5px;color:var(--muted)}
.channel-arrow{color:var(--primary);font-size:18px;line-height:1;transition:transform .16s ease}
.channel-list a:hover .channel-arrow{transform:translateX(4px)}

/* rank */
.rank-list{border-top:1px solid var(--line)}
.rank-item{display:flex;align-items:center;gap:16px;min-height:56px;padding:12px 0;border-bottom:1px solid var(--line)}
.rank-index{flex:0 0 36px;width:36px;font-family:var(--serif);font-size:18px;color:var(--muted)}
.rank-item:nth-child(-n+3) .rank-index{color:var(--primary);font-weight:700;font-size:20px}
.rank-name{font-weight:600;font-size:15.5px}
.rank-cat{margin-left:4px}
.rank-num{margin-left:auto;color:var(--primary);font-weight:600;font-size:14px}

/* voice & stats */
.voice-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-bottom:36px}
.voice{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.voice p{font-size:14.5px}
.voice cite{margin-top:12px;display:block;font-style:normal;font-size:13px;color:var(--muted)}
.stats-band{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:28px 24px;text-align:center}
.stats-band strong{display:block;font-family:var(--serif);font-size:32px;line-height:1.2;color:var(--primary)}
.stats-band span{font-size:13.5px;color:var(--muted)}

/* compare */
.compare-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:12px;background:var(--card)}
table.compare{width:100%;min-width:600px;border-collapse:collapse;font-size:14.5px}
.compare th,.compare td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.compare tbody tr:last-child th,.compare tbody tr:last-child td{border-bottom:0}
.compare thead th{font-family:var(--serif);font-size:15px;background:var(--sand);white-space:nowrap}
.compare tbody th{font-weight:600;color:var(--muted);white-space:nowrap}
.compare th:nth-child(2),.compare td:nth-child(2){background:var(--primary-light);color:var(--ink);font-weight:600}
.compare thead th:nth-child(2){color:var(--primary)}

/* news */
.news-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.news-item{display:flex;gap:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow);transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}
.news-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(200,80,30,.3)}
.news-thumb{flex:0 0 128px;border-radius:8px;overflow:hidden;background:var(--sand)}
.news-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover}
.news-body h3{font-family:var(--sans);font-size:15px;font-weight:600;line-height:1.6}
.news-date{font-size:13px;color:var(--muted);margin:8px 0 0}

/* faq */
.faq-list{max-width:840px;margin-top:8px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{display:flex;align-items:center;gap:12px;min-height:56px;padding:16px 0;font-size:16px;font-weight:600;cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"";flex:0 0 3px;width:3px;height:18px;border-radius:2px;background:var(--primary)}
.faq-item summary::after{content:"+";margin-left:auto;color:var(--muted);font-size:18px;line-height:1}
.faq-item[open] summary::after{content:"−";color:var(--primary)}
.faq-item p{padding:0 0 20px 15px;font-size:14px;line-height:1.9;color:var(--muted);max-width:680px}

/* guarantee */
.guarantee{background:var(--sand);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:22px 0}
.guarantee ul{display:flex;flex-wrap:wrap;justify-content:center}
.guarantee li{font-size:14px;padding:0 22px;border-left:1px solid var(--line)}
.guarantee li:first-child{border-left:0}

/* signup */
.signup{background:var(--sand) url('/assets/images/04594bb8351b3082.jpg') center/cover no-repeat;border-top:1px solid var(--line);padding:76px 0}
.signup-card{max-width:680px;margin:0 auto;background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:14px;padding:40px;text-align:center;box-shadow:0 10px 30px rgba(43,33,28,.08)}
.signup-card h2{font-size:24px;margin-bottom:12px}
.signup-card p{color:var(--muted)}
.form-row{display:flex;gap:8px;margin-top:24px}
.form-row input{flex:1;min-width:0;height:44px;border:1px solid var(--line);border-radius:8px;padding:0 14px;font-size:15px;font-family:inherit;color:var(--ink);background:#fff}
.form-row input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(200,80,30,.14)}

/* footer */
.site-footer{background:var(--sand);border-top:1px solid var(--line);padding:56px 0 24px;font-size:13px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:32px;border-bottom:1px solid var(--line)}
.footer-grid h4{font-size:15px;margin-bottom:14px}
.footer-grid p,.footer-grid a,.footer-grid li{color:var(--muted);font-size:13px;line-height:2}
.footer-grid a:hover{color:var(--primary)}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;padding-top:18px;color:var(--muted);font-size:13px}

/* sticky */
.sticky-cta{position:fixed;left:0;right:0;bottom:0;z-index:70;background:rgba(255,255,255,.97);border-top:1px solid var(--line);box-shadow:0 -4px 16px rgba(43,33,28,.08)}
.sticky-cta .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;padding-top:8px;padding-bottom:8px}
.sticky-cta p{margin:0;font-size:14.5px}

@media (max-width:1024px){
  .nav-toggle{display:inline-flex;margin-left:auto}
  .header-panel{display:none}
  .site-header.is-open .header-panel{display:flex;flex-direction:column;align-items:stretch;gap:0;position:absolute;left:0;right:0;top:100%;background:var(--card);border-bottom:1px solid var(--line);padding:6px 24px 20px;box-shadow:0 10px 24px rgba(43,33,28,.10)}
  .main-nav ul{flex-direction:column;gap:0}
  .main-nav a{display:block;padding:13px 0;border-bottom:1px solid var(--line);border-bottom-width:1px;font-size:15px}
  .header-actions{flex-direction:column;align-items:stretch;gap:12px;margin-left:0;padding-top:16px}
  .header-actions .btn{width:100%}
  .ghost-link{padding:4px 0}
  .hero{padding:44px 0 60px}
  .hero-stage{grid-template-columns:1fr;gap:16px}
  .hero-shot{order:-1}
  .hero-points{flex-direction:row;flex-wrap:wrap}
  .hero-points li{flex:1 1 calc(50% - 7px)}
  .live-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .hero-head h1{font-size:30px}
  .hero-sub{font-size:16px}
  .section{padding:52px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px;margin-bottom:24px}
  .section h2{font-size:21px}
  .pain-list{grid-template-columns:1fr;gap:22px}
  .feature-list li{gap:18px;padding:22px 0}
  .feature-num{flex:0 0 48px;font-size:26px}
  .live-grid,.soon-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene{grid-template-columns:1fr;gap:20px;padding:26px 0}
  .scene--flip .scene-media{order:0}
  .channel-list{grid-template-columns:1fr}
  .voice-grid{grid-template-columns:1fr}
  .stats-band{grid-template-columns:1fr;gap:18px;padding:22px}
  .news-list{grid-template-columns:1fr}
  .signup{padding:52px 0}
  .signup-card{padding:28px 20px}
  .guarantee li{padding:0 14px;font-size:13px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  body{font-size:15px;padding-bottom:74px}
  .hero-head h1{font-size:26px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .hero-points li{flex:1 1 100%}
  .live-grid,.soon-grid{grid-template-columns:1fr}
  .feature-list li{flex-direction:column;gap:6px}
  .rank-item{gap:10px}
  .rank-name{font-size:14.5px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .form-row{flex-direction:column}
  .form-row .btn{width:100%}
  .sticky-cta .container{min-height:56px}
  .sticky-cta p{font-size:13px}
  .sticky-cta .btn{min-height:40px;padding:8px 12px;font-size:13px}
  .guarantee ul{gap:6px 0}
  .guarantee li{font-size:12.5px;padding:0 10px}
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}