/* roulang page: index */
:root{
  --paper:#FBF7EF;
  --card:#FFFDF7;
  --band:#F5EFE2;
  --note:#F7F1DE;
  --ink:#23201C;
  --muted:#6B655C;
  --green:#2E5D4B;
  --green-soft:#E8F0E8;
  --orange:#CF6A2E;
  --orange-d:#B85C25;
  --hi:#F3E24A;
  --line:#E4DCCB;
  --up:#C9483A;
  --down:#2E7D5B;
  --r:10px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-size:16px;line-height:1.8;color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  background-color:var(--paper);
  background-image:
    repeating-linear-gradient(0deg,rgba(228,220,203,.42) 0 1px,transparent 1px 28px),
    repeating-linear-gradient(90deg,rgba(228,220,203,.42) 0 1px,transparent 1px 28px);
}
h1,h2,h3,h4{font-family:"Noto Serif SC","Songti SC","SimSun",serif;font-weight:700;color:var(--ink)}
a{color:inherit}
img{max-width:100%;display:block}
button,input{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
section{scroll-margin-top:88px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 26px;
  border-radius:8px;font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;
  border:1.5px solid transparent;transition:background .16s ease-out,transform .16s ease-out,box-shadow .16s ease-out,color .16s ease-out;
}
.btn:focus-visible{outline:2px dashed var(--green);outline-offset:3px}
.btn-primary{background:var(--orange);color:#FFFDF7}
.btn-primary:hover{background:var(--orange-d);transform:translateY(1px);box-shadow:0 3px 0 var(--green)}
.btn-ghost{border-color:var(--green);color:var(--green);background:transparent}
.btn-ghost:hover{background:var(--green-soft);transform:translateY(1px)}
.btn-sm{min-height:36px;padding:0 14px;font-size:13px;border-radius:7px}
.chip{
  display:inline-block;font-size:11px;line-height:1.6;padding:2px 9px;border-radius:999px;
  border:1px solid var(--green);color:var(--green);background:rgba(255,253,247,.94);
}
.chip-orange{border-color:var(--orange);color:var(--orange);background:rgba(255,253,247,.94)}
.num-tab{font-variant-numeric:tabular-nums}

/* ── header ── */
.site-head{position:sticky;top:0;z-index:60;background:rgba(251,247,239,.95);border-bottom:1px solid var(--line)}
.head-in{display:flex;align-items:center;gap:22px;height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:9px;background:var(--green);color:#FFFDF7;
  display:grid;place-items:center;font-family:"Noto Serif SC",serif;font-size:16px;
}
.brand-txt{font-size:17px;font-weight:700;letter-spacing:.5px}
.nav{margin-left:auto;display:flex;align-items:center;gap:20px}
.nav a{color:var(--muted);text-decoration:none;font-size:15px;padding:7px 0;border-bottom:3px solid transparent;transition:color .16s,border-color .16s}
.nav a:hover{color:var(--green);border-bottom-color:var(--hi)}
.nav .nav-cta{margin-left:6px;min-height:40px;padding:0 18px;font-size:14px;border-bottom:0}
.burger{display:none;margin-left:auto;width:44px;height:44px;background:transparent;border:1px solid var(--line);border-radius:8px;cursor:pointer;padding:0;place-items:center}
.burger span{display:block;width:18px;height:2px;background:var(--green);margin:3px auto;border-radius:2px}

/* ── hero ── */
.hero{padding:62px 0 74px;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.hero h1{font-size:46px;line-height:1.24;margin:16px 0 0;letter-spacing:.5px}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(105deg,transparent 0 5%,rgba(243,226,74,.8) 5% 95%,transparent 95%);
  padding:0 2px;
}
.hero-sub{margin:14px 0 0;font-size:19px;font-weight:600;color:var(--green)}
.hero-desc{margin:14px 0 0;font-size:16px;color:var(--muted);max-width:520px}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.checks{display:flex;flex-wrap:wrap;gap:6px 20px;margin:22px 0 0;font-size:14px;color:var(--muted)}
.checks li::before{content:"✓";color:var(--green);font-weight:700;margin-right:6px}
.hero-figure{position:relative;border-radius:var(--r);border:1px solid var(--line);overflow:hidden;aspect-ratio:16/10;background:#E9E2D2;box-shadow:0 14px 34px -26px rgba(35,32,28,.8)}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-note{
  position:absolute;left:18px;bottom:18px;background:var(--note);border:1px solid var(--line);
  border-radius:8px;padding:8px 14px;font-size:13px;font-weight:600;transform:rotate(-1.3deg);
  box-shadow:0 8px 16px -12px rgba(35,32,28,.9);
}
.hero-note b{color:var(--orange)}

/* ── section shell ── */
.sec{padding:78px 0}
.sec-alt{background:var(--band)}
.sec-head{max-width:760px;margin-bottom:34px}
.sec-head h2{
  display:flex;align-items:flex-start;gap:12px;
  font-size:30px;line-height:1.35;margin:0 0 12px;
}
.sec-head h2::before{content:"";flex:0 0 6px;height:28px;background:var(--green);border-radius:3px;margin-top:7px}
.sec-head p{margin:0;color:var(--muted);font-size:15px}
.more-link{display:inline-flex;align-items:center;gap:8px;margin-top:26px;color:var(--green);font-weight:600;text-decoration:none;font-size:15px;border-bottom:3px solid transparent;transition:.16s}
.more-link:hover{border-bottom-color:var(--hi)}
.more-link::after{content:"→";transition:transform .16s}
.more-link:hover::after{transform:translateX(4px)}

/* ── notes / pain ── */
.notes{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.note{
  position:relative;background:var(--note);border:1px solid var(--line);border-radius:8px;
  padding:22px 18px 18px;border-top:4px solid var(--hi);transition:transform .16s ease-out;
}
.note:nth-child(odd){transform:rotate(-.6deg)}
.note:nth-child(even){transform:rotate(.6deg)}
.note:hover{transform:rotate(0)}
.note .no{font-family:"Noto Serif SC",serif;font-size:13px;color:var(--orange);letter-spacing:1px}
.note h3{font-size:17px;margin:6px 0 8px;line-height:1.5}
.note p{margin:0;font-size:14px;color:var(--muted);line-height:1.75}

/* ── solution ── */
.sol-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:52px;align-items:start}
.sol-list li{padding:20px 0;border-bottom:1px dashed var(--line)}
.sol-list li:first-child{padding-top:0}
.sol-list h3{font-size:18px;margin:0 0 6px}
.sol-list p{margin:0;font-size:15px;color:var(--muted)}
.sol-side h2{font-size:30px;line-height:1.35;margin:0 0 16px}
.sol-side p{margin:0 0 14px;color:var(--muted);font-size:15px}

/* ── how ── */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;position:relative}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px 22px}
.step-no{
  width:44px;height:44px;border-radius:50%;border:2px solid var(--green);background:#fff;
  display:grid;place-items:center;font-family:"Noto Serif SC",serif;font-size:19px;color:var(--green);
  margin-bottom:14px;
}
.step h3{font-size:18px;margin:0 0 8px}
.step p{margin:0;font-size:14px;color:var(--muted)}

/* ── live cards ── */
.live-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.live-card{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;transition:transform .16s ease-out,border-color .16s ease-out;
}
.live-card:hover{transform:translateY(-2px);border-color:var(--green)}
.live-card::after{content:"";position:absolute;right:0;bottom:0;width:16px;height:16px;background:linear-gradient(225deg,var(--line) 0 50%,transparent 50%);transition:background .16s}
.live-card:hover::after{background:linear-gradient(225deg,var(--orange) 0 50%,transparent 50%)}
.cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:#E9E2D2}
.cover img{width:100%;height:100%;object-fit:cover}
.cover .cat-chip{position:absolute;left:10px;top:10px}
.online{
  position:absolute;right:10px;bottom:10px;display:flex;align-items:center;gap:6px;
  font-size:12px;color:#FFFDF7;background:rgba(35,32,28,.66);border-radius:999px;padding:2px 9px;
}
.online::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange);box-shadow:0 0 0 3px rgba(207,106,46,.3)}
.live-body{padding:13px 15px 17px}
.live-body h3{font-size:17px;margin:0 0 4px;line-height:1.45}
.live-body .topic{margin:0 0 8px;font-size:13px;color:var(--muted);line-height:1.6}
.live-body .when{margin:0;font-size:13px;color:var(--green)}

/* ── soon ── */
.soon-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.soon-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:transform .16s ease-out,border-color .16s ease-out}
.soon-card:hover{transform:translateY(-2px);border-color:var(--green)}
.soon-card .cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(35,32,28,.05),rgba(35,32,28,.42))}
.soon-body{padding:13px 15px 15px;display:flex;align-items:center;gap:12px;justify-content:space-between}
.soon-body h3{font-size:16px;margin:0 0 4px}
.soon-body .t{font-size:13px;color:var(--orange);font-weight:600}
.soon-body .btn{flex:0 0 auto}

/* ── channel ── */
.chan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0 40px}
.chan{display:block;text-decoration:none;padding:22px 4px;border-bottom:1px dashed var(--line);transition:background .16s}
.chan:hover{background:var(--note)}
.chan h3{font-size:18px;margin:0 0 6px;display:flex;align-items:center;gap:8px}
.chan h3 span{font-size:13px;color:var(--orange);font-weight:400}
.chan p{margin:0;font-size:14px;color:var(--muted);line-height:1.7}

/* ── rank ── */
.rank-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 44px}
.rank-li{display:grid;grid-template-columns:52px 1fr auto;align-items:center;gap:12px;padding:14px 0;border-bottom:1px dashed var(--line)}
.rank-no{font-family:"Noto Serif SC",serif;font-size:24px;color:var(--green);line-height:1;font-variant-numeric:tabular-nums}
.rank-li.top .rank-no{color:#FFFDF7;background:var(--orange);border-radius:6px;width:40px;height:32px;display:grid;place-items:center;font-size:17px}
.rank-name{font-size:15px;font-weight:600}
.rank-name small{display:block;font-weight:400;font-size:12px;color:var(--muted);margin-top:2px}
.rank-meta{text-align:right;font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px}
.rank-meta b{font-variant-numeric:tabular-nums;color:var(--ink);font-size:15px}

/* ── result ── */
.res-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.res{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px 20px}
.res .v{
  display:inline-block;font-family:"Noto Serif SC",serif;font-size:40px;line-height:1.2;font-weight:700;
  background:linear-gradient(transparent 66%,rgba(243,226,74,.8) 66%);
  font-variant-numeric:tabular-nums;
}
.res h3{font-size:15px;margin:8px 0 4px}
.res p{margin:0;font-size:13px;color:var(--muted);line-height:1.65}

/* ── voice ── */
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.voice{background:var(--note);border:1px solid var(--line);border-radius:8px;border-top:4px solid var(--hi);padding:20px;transition:transform .16s}
.voice:nth-child(2){transform:rotate(.5deg)}
.voice:hover{transform:rotate(0)}
.voice-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.voice-head img{width:40px;height:40px;border-radius:50%;object-fit:cover;border:1px solid var(--line);background:#E9E2D2}
.voice-head b{display:block;font-size:15px}
.voice-head span{font-size:12px;color:var(--muted)}
.voice p{margin:0;font-size:14px;line-height:1.8;color:#3a362f}
.voice time{display:block;margin-top:10px;font-size:12px;color:var(--muted)}

/* ── who ── */
.who-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 44px}
.who{display:flex;gap:14px;padding:20px 0;border-bottom:1px dashed var(--line)}
.who .ic{
  flex:0 0 38px;height:38px;border-radius:8px;background:var(--green-soft);color:var(--green);
  display:grid;place-items:center;font-size:16px;font-family:"Noto Serif SC",serif;
}
.who h3{font-size:16px;margin:0 0 4px}
.who p{margin:0;font-size:14px;color:var(--muted)}

/* ── news ── */
.news-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 40px}
.news{display:flex;gap:16px;padding:16px 0;border-bottom:1px dashed var(--line);text-decoration:none}
.news img{flex:0 0 96px;width:96px;height:72px;object-fit:cover;border-radius:8px;border:1px solid var(--line);background:#E9E2D2}
.news h3{font-size:16px;margin:0 0 6px;line-height:1.5;transition:color .16s}
.news:hover h3{color:var(--green)}
.news time{font-size:12px;color:var(--muted)}
.news p{margin:4px 0 0;font-size:13px;color:var(--muted);line-height:1.6}

/* ── snapshot ── */
.snap{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.snap-row{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:12px;padding:15px 22px;border-bottom:1px solid var(--line);font-size:15px;align-items:center}
.snap-row:last-child{border-bottom:0}
.snap-head{background:var(--band);font-size:13px;color:var(--muted);font-weight:600}
.snap-row .n{font-weight:600}
.snap-row .v{font-variant-numeric:tabular-nums;font-weight:700}
.up{color:var(--up)}
.down{color:var(--down)}
.snap-foot{margin:14px 0 0;font-size:13px;color:var(--muted)}

/* ── faq ── */
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:0 22px;margin-bottom:14px}
.faq-item summary{
  cursor:pointer;list-style:none;padding:18px 34px 18px 0;font-weight:600;font-size:16px;position:relative;
  font-family:"Noto Serif SC",serif;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:0;top:15px;color:var(--green);font-size:21px;line-height:1;transition:transform .16s}
.faq-item[open] summary::after{content:"−"}
.faq-item p{margin:0;padding:0 0 20px;color:var(--muted);font-size:15px;line-height:1.85}

/* ── cta ── */
.cta{background:var(--green);color:#FFFDF7;padding:66px 0}
.cta-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.cta h2{font-size:30px;line-height:1.35;margin:0 0 14px;color:#FFFDF7}
.cta h2 em{font-style:normal;background:linear-gradient(transparent 62%,rgba(243,226,74,.55) 62%)}
.cta p{margin:0 0 8px;font-size:15px;color:#DCE7DF}
.cta-form label{display:block;font-size:13px;margin-bottom:8px;color:#DCE7DF}
.cta-form .row{display:flex;gap:10px;flex-wrap:wrap}
.cta-form input{
  flex:1 1 220px;min-height:48px;border-radius:8px;border:1px solid rgba(255,253,247,.45);
  background:rgba(255,253,247,.12);color:#FFFDF7;padding:0 14px;font-size:15px;
}
.cta-form input::placeholder{color:rgba(255,253,247,.6)}
.cta-form input:focus-visible{outline:2px dashed var(--hi);outline-offset:2px}
.cta-form .btn-primary{background:var(--orange);flex:0 0 auto}
.cta-tip{margin:12px 0 0;font-size:12px;color:rgba(255,253,247,.72)}
.cta-msg{margin:10px 0 0;font-size:13px;color:var(--hi);min-height:20px}

/* ── footer ── */
.site-foot{background:var(--band);border-top:1px solid var(--line);padding:58px 0 0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.foot-grid p{margin:0;font-size:14px;color:var(--muted);line-height:1.8}
.foot-grid h4{font-size:15px;margin:0 0 14px}
.foot-grid a{display:block;color:var(--muted);text-decoration:none;font-size:14px;padding:4px 0;transition:color .16s}
.foot-grid a:hover{color:var(--green)}
.foot-bottom{border-top:1px solid var(--line);margin-top:44px;padding:18px 0;font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between}

/* ── responsive ── */
@media (max-width:1024px){
  .container{padding:0 24px}
  .hero h1{font-size:38px}
  .hero-grid{gap:34px}
  .live-grid{grid-template-columns:repeat(3,1fr)}
  .notes{grid-template-columns:repeat(2,1fr)}
  .soon-grid{grid-template-columns:repeat(3,1fr)}
  .chan-grid{grid-template-columns:repeat(2,1fr);gap:0 28px}
  .res-grid{grid-template-columns:repeat(2,1fr)}
  .voice-grid{grid-template-columns:1fr 1fr}
  .sol-grid{gap:34px}
  .sec{padding:64px 0}
  .cta-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:768px){
  .head-in{height:62px;gap:12px}
  .nav{
    position:fixed;left:0;right:0;top:62px;bottom:0;z-index:55;
    flex-direction:column;align-items:stretch;gap:0;padding:18px 24px 30px;
    background:var(--paper);border-top:1px solid var(--line);
    transform:translateX(100%);transition:transform .22s ease-out;overflow-y:auto;
  }
  .nav.is-open{transform:translateX(0)}
  .nav a{font-size:17px;padding:14px 0;border-bottom:1px solid var(--line)}
  .nav a:hover{border-bottom-color:var(--line)}
  .nav .nav-cta{margin:22px 0 0;min-height:48px;font-size:16px;border-bottom:0}
  .burger{display:grid}
  .hero{padding:44px 0 52px}
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .hero h1{font-size:32px}
  .hero-sub{font-size:17px}
  .sec{padding:52px 0}
  .sec-head h2,.sol-side h2,.cta h2{font-size:23px}
  .sec-head h2::before{height:22px;margin-top:4px}
  .live-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .soon-grid{grid-template-columns:1fr 1fr;gap:16px}
  .notes{grid-template-columns:1fr 1fr}
  .sol-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:16px}
  .rank-grid{grid-template-columns:1fr}
  .who-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .voice-grid{grid-template-columns:1fr}
  .res-grid{grid-template-columns:1fr 1fr;gap:14px}
  .res .v{font-size:32px}
  .rank-li{grid-template-columns:44px 1fr auto;gap:10px}
  .snap-row{grid-template-columns:1.2fr 1fr 1fr;padding:13px 14px;font-size:14px}
  .snap-row .st{display:none}
  .snap-head .st{display:none}
  .foot-grid{grid-template-columns:1fr 1fr;gap:26px}
  .cta{padding:50px 0}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero h1{font-size:29px}
  .live-grid{grid-template-columns:1fr 1fr;gap:12px}
  .live-body{padding:10px 11px 13px}
  .live-body h3{font-size:15px}
  .live-body .topic,.live-body .when{font-size:12px}
  .notes{grid-template-columns:1fr}
  .chan-grid{grid-template-columns:1fr}
  .soon-grid{grid-template-columns:1fr}
  .res-grid{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr}
  .hero-btns .btn{flex:1 1 100%}
  .brand-txt{font-size:15px}
}