/* roulang page: index */
:root{
  --bg:#060911;
  --bg-soft:#0a1020;
  --panel:#0e1526;
  --panel-2:#121c31;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#e9eefb;
  --muted:#93a0ba;
  --neon:#3cf0c2;
  --neon-soft:#7ef0d4;
  --violet:#8a6bff;
  --pink:#ff4f93;
  --radius-lg:22px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 18px 48px rgba(0,0,0,.45);
  --shadow-lift:0 26px 60px rgba(0,0,0,.55);
  --maxw:1180px;
  --font:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  background:
    radial-gradient(900px 520px at 10% -10%, rgba(138,107,255,.22), transparent 62%),
    radial-gradient(820px 500px at 90% -4%, rgba(60,240,194,.15), transparent 60%),
    radial-gradient(700px 460px at 50% 110%, rgba(255,79,147,.10), transparent 62%),
    linear-gradient(180deg,#060911 0%,#070c17 46%,#05080f 100%);
}
img{max-width:100%;display:block;border:0;}
a{color:var(--neon);text-decoration:none;transition:color .2s ease;}
a:hover{color:#8bffe2;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font);
  color:#fff;
  margin:0;
  line-height:1.3;
  font-weight:800;
  letter-spacing:-.2px;
}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 22px;
}

/* ============ HEADER / NAV ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(6,9,17,.80);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:74px;
}
.brand{
  display:flex;
  align-items:center;
  gap:11px;
  flex:0 0 auto;
  color:inherit;
  text-decoration:none;
}
.brand:hover{color:inherit;}
.brand-mark{
  width:42px;
  height:42px;
  border-radius:13px;
  display:grid;
  place-items:center;
  font-size:19px;
  font-weight:900;
  color:#04150f;
  background:linear-gradient(135deg,var(--neon),var(--neon-soft) 45%,var(--violet));
  box-shadow:0 10px 24px rgba(60,240,194,.24);
  flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.22;}
.brand-text strong{font-size:15.5px;font-weight:800;letter-spacing:.2px;color:#fff;white-space:nowrap;}
.brand-text em{font-style:normal;font-size:10.5px;letter-spacing:1.4px;color:var(--muted);text-transform:uppercase;}
.nav{
  display:flex;
  align-items:center;
  gap:5px;
  margin-left:auto;
  padding:0;
  background:transparent;
  border:0;
  flex-wrap:nowrap;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:9px 14px;
  border-radius:999px;
  font-size:14.5px;
  font-weight:600;
  color:var(--muted);
  white-space:nowrap;
  transition:color .2s ease,background .2s ease,transform .2s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.07);text-decoration:none;}
.nav-link.is-active{
  color:#04170f;
  background:linear-gradient(135deg,var(--neon),#63e9c8);
  box-shadow:0 10px 24px rgba(60,240,194,.26);
  font-weight:800;
}
.nav-link.is-active:hover{color:#04170f;background:linear-gradient(135deg,var(--neon),#63e9c8);}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.live-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 13px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  color:#bff8e9;
  background:rgba(60,240,194,.10);
  border:1px solid rgba(60,240,194,.30);
  white-space:nowrap;
}
.live-badge .dot{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--neon);
  box-shadow:0 0 0 4px rgba(60,240,194,.16);
  animation:pulseDot 2s ease-in-out infinite;
}
@keyframes pulseDot{
  0%,100%{opacity:1;transform:scale(1);}
  50%{opacity:.35;transform:scale(.8);}
}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:42px;
  height:42px;
  padding:0 10px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-strong);
  border-radius:12px;
  cursor:pointer;
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:rgba(255,255,255,.1);border-color:rgba(60,240,194,.42);}
.nav-toggle span{
  display:block;
  height:2px;
  width:100%;
  border-radius:2px;
  background:var(--text);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  padding:13px 26px;
  border-radius:999px;
  font-size:15px;
  font-weight:800;
  letter-spacing:.2px;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .18s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
}
.btn i{font-size:14px;}
.btn-primary{
  color:#04170f;
  background:linear-gradient(135deg,var(--neon),#5fe6c5);
  box-shadow:0 14px 32px rgba(60,240,194,.28);
}
.btn-primary:hover{color:#04170f;transform:translateY(-2px);box-shadow:0 20px 42px rgba(60,240,194,.38);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  color:var(--text);
  background:rgba(255,255,255,.04);
  border-color:var(--line-strong);
}
.btn-ghost:hover{color:#fff;background:rgba(255,255,255,.10);border-color:rgba(60,240,194,.50);transform:translateY(-2px);}
.btn-violet{
  color:#0b0620;
  background:linear-gradient(135deg,var(--violet),#a58bff);
  box-shadow:0 14px 32px rgba(138,107,255,.30);
}
.btn-violet:hover{color:#0b0620;transform:translateY(-2px);box-shadow:0 20px 42px rgba(138,107,255,.40);}
.btn-sm{padding:10px 18px;font-size:13.5px;}

/* ============ HERO ============ */
.hero{
  position:relative;
  padding:76px 0 66px;
  overflow:hidden;
}
.hero-orb{
  position:absolute;
  width:520px;
  height:520px;
  right:-160px;
  top:-180px;
  border-radius:50%;
  background:radial-gradient(circle at 40% 40%, rgba(60,240,194,.22), transparent 66%);
  filter:blur(10px);
  pointer-events:none;
}
.hero-grid{row-gap:44px;}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:7px 15px;
  border-radius:999px;
  font-size:12.8px;
  font-weight:700;
  letter-spacing:.6px;
  color:#c8fff0;
  background:rgba(60,240,194,.09);
  border:1px solid rgba(60,240,194,.28);
}
.hero-tag i{font-size:12px;color:var(--neon);}
.hero-title{
  margin:20px 0 16px;
  font-size:clamp(29px,4.4vw,50px);
  line-height:1.24;
  letter-spacing:-.8px;
  background:linear-gradient(120deg,#ffffff 0%,#ffffff 46%,#8ef6de 76%,#b9a9ff 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  margin:0 0 14px;
  font-size:clamp(16px,1.9vw,19px);
  font-weight:700;
  color:var(--neon);
  letter-spacing:.2px;
}
.hero-lead{
  max-width:620px;
  margin:0 0 30px;
  font-size:15.8px;
  color:var(--muted);
  line-height:1.9;
}
.hero-cta{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:38px;
}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:12px;
}
.stat{
  padding:15px 16px;
  border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease;
}
.stat:hover{border-color:rgba(60,240,194,.36);transform:translateY(-3px);}
.stat b{display:block;font-size:21px;font-weight:800;color:#fff;letter-spacing:.2px;line-height:1.3;}
.stat span{display:block;font-size:12.4px;color:var(--muted);margin-top:2px;}

.hero-panel{
  position:relative;
  padding:22px;
  border-radius:var(--radius-lg);
  background:linear-gradient(180deg,var(--panel-2),var(--panel));
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
}
.hero-panel::after{
  content:"";
  position:absolute;
  inset:-1px;
  border-radius:var(--radius-lg);
  padding:1px;
  background:linear-gradient(140deg,rgba(60,240,194,.5),transparent 45%,rgba(138,107,255,.45));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;
  mask-composite:exclude;
  pointer-events:none;
  opacity:.75;
}
.panel-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:16px;
}
.panel-head h2{
  font-size:15px;
  font-weight:800;
  letter-spacing:.4px;
  margin:0;
}
.panel-chip{
  font-size:11.5px;
  font-weight:700;
  color:#04170f;
  background:linear-gradient(135deg,var(--neon),#7ef0d4);
  padding:4px 11px;
  border-radius:999px;
}
.play-list{display:flex;flex-direction:column;gap:10px;}
.play-item{
  display:flex;
  align-items:center;
  gap:12px;
  padding:10px;
  border-radius:12px;
  background:rgba(255,255,255,.035);
  border:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.play-item:hover{
  background:rgba(60,240,194,.08);
  border-color:rgba(60,240,194,.30);
  transform:translateX(3px);
}
.play-thumb{
  width:58px;
  height:46px;
  flex:0 0 auto;
  border-radius:10px;
  display:grid;
  place-items:center;
  font-size:12px;
  font-weight:900;
  color:#04150f;
  background:linear-gradient(135deg,var(--neon),var(--violet));
  letter-spacing:.5px;
}
.play-meta{min-width:0;}
.play-meta strong{
  display:block;
  font-size:13.6px;
  font-weight:700;
  color:#fff;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.play-meta span{font-size:12px;color:var(--muted);}
.panel-foot{
  margin-top:16px;
  padding-top:15px;
  border-top:1px dashed var(--line-strong);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:12.6px;
  color:var(--muted);
}
.panel-foot a{font-weight:700;font-size:13px;}

/* ============ SECTION BASE ============ */
.section{padding:64px 0;}
.section--tight{padding:44px 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:800;
  letter-spacing:1.6px;
  text-transform:uppercase;
  color:var(--neon);
  margin-bottom:12px;
}
.eyebrow::before{
  content:"";
  width:22px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--neon),transparent);
}
.section-head.center .eyebrow::before{display:none;}
.section-title{
  font-size:clamp(24px,3vw,34px);
  line-height:1.3;
  margin-bottom:14px;
}
.section-desc{
  font-size:15.4px;
  color:var(--muted);
  line-height:1.9;
  margin:0;
}

/* ============ CATEGORY CARDS ============ */
.cat-card{
  position:relative;
  display:flex;
  flex-direction:column;
  height:100%;
  padding:28px 26px 26px;
  border-radius:var(--radius-lg);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.012));
  border:1px solid var(--line);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease,background .24s ease;
  overflow:hidden;
}
.cat-card::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:linear-gradient(90deg,var(--neon),var(--violet));
  opacity:0;
  transition:opacity .24s ease;
}
.cat-card:hover{
  transform:translateY(-7px);
  border-color:rgba(60,240,194,.38);
  box-shadow:var(--shadow-lift);
  background:linear-gradient(180deg,rgba(60,240,194,.07),rgba(255,255,255,.015));
}
.cat-card:hover::before{opacity:1;}
.cat-icon{
  width:52px;
  height:52px;
  border-radius:15px;
  display:grid;
  place-items:center;
  font-size:20px;
  color:var(--neon);
  background:rgba(60,240,194,.11);
  border:1px solid rgba(60,240,194,.26);
  margin-bottom:20px;
  transition:transform .24s ease,background .24s ease;
}
.cat-card:hover .cat-icon{transform:rotate(-6deg) scale(1.05);background:rgba(60,240,194,.18);}
.cat-card h3{font-size:19.5px;margin-bottom:10px;line-height:1.4;}
.cat-card p{font-size:14.6px;color:var(--muted);line-height:1.85;margin-bottom:20px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px;}
.tag{
  display:inline-flex;
  align-items:center;
  padding:4px 11px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  color:#bdf7e8;
  background:rgba(60,240,194,.09);
  border:1px solid rgba(60,240,194,.24);
}
.tag.purple{color:#d5c9ff;background:rgba(138,107,255,.12);border-color:rgba(138,107,255,.28);}
.tag.pink{color:#ffc6da;background:rgba(255,79,147,.10);border-color:rgba(255,79,147,.26);}
.cat-link{
  margin-top:auto;
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:14.4px;
  font-weight:800;
  color:var(--neon);
}
.cat-link i{transition:transform .24s ease;}
.cat-card:hover .cat-link i{transform:translateX(5px);}

/* ============ FEATURE / WHY ============ */
.why-wrap{
  padding:44px;
  border-radius:26px;
  background:linear-gradient(160deg,rgba(18,28,49,.92),rgba(10,16,32,.92));
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
}
.feature{
  display:flex;
  gap:15px;
  height:100%;
  padding:22px;
  border-radius:var(--radius);
  background:rgba(255,255,255,.032);
  border:1px solid var(--line);
  transition:background .22s ease,border-color .22s ease,transform .22s ease;
}
.feature:hover{background:rgba(60,240,194,.07);border-color:rgba(60,240,194,.30);transform:translateY(-4px);}
.feature-ico{
  flex:0 0 auto;
  width:42px;
  height:42px;
  border-radius:12px;
  display:grid;
  place-items:center;
  font-size:16px;
  color:#04150f;
  background:linear-gradient(135deg,var(--neon),#7ef0d4);
}
.feature h3{font-size:16px;margin-bottom:7px;}
.feature p{font-size:14px;color:var(--muted);line-height:1.8;margin:0;}

/* ============ RANK LIST ============ */
.rank-board{
  border-radius:var(--radius-lg);
  border:1px solid var(--line-strong);
  background:linear-gradient(180deg,rgba(18,28,49,.85),rgba(10,16,32,.85));
  overflow:hidden;
  box-shadow:var(--shadow);
}
.rank-row{
  display:flex;
  align-items:center;
  gap:16px;
  padding:18px 24px;
  border-bottom:1px solid var(--line);
  transition:background .2s ease,padding-left .2s ease;
}
.rank-row:last-child{border-bottom:0;}
.rank-row:hover{background:rgba(60,240,194,.07);padding-left:30px;}
.rank-num{
  flex:0 0 auto;
  width:34px;
  height:34px;
  border-radius:10px;
  display:grid;
  place-items:center;
  font-size:14px;
  font-weight:900;
  color:var(--muted);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
}
.rank-row:nth-child(1) .rank-num{color:#04170f;background:linear-gradient(135deg,var(--neon),#7ef0d4);border-color:transparent;}
.rank-row:nth-child(2) .rank-num{color:#0b0620;background:linear-gradient(135deg,var(--violet),#a58bff);border-color:transparent;}
.rank-row:nth-child(3) .rank-num{color:#2a0714;background:linear-gradient(135deg,var(--pink),#ff8ab3);border-color:transparent;}
.rank-main{flex:1 1 auto;min-width:0;}
.rank-main strong{display:block;font-size:15.4px;font-weight:700;color:#fff;line-height:1.5;}
.rank-main span{font-size:12.8px;color:var(--muted);}
.rank-time{
  flex:0 0 auto;
  font-size:12.8px;
  font-weight:700;
  color:#bff8e9;
  background:rgba(60,240,194,.09);
  border:1px solid rgba(60,240,194,.24);
  padding:4px 12px;
  border-radius:999px;
  white-space:nowrap;
}

/* ============ FLOW STEPS ============ */
.step{
  position:relative;
  height:100%;
  padding:26px 22px;
  border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.012));
  border:1px solid var(--line);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.step:hover{transform:translateY(-6px);border-color:rgba(138,107,255,.38);box-shadow:var(--shadow);}
.step-index{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  border-radius:11px;
  font-size:14px;
  font-weight:900;
  color:#0b0620;
  background:linear-gradient(135deg,var(--violet),#a58bff);
  margin-bottom:16px;
}
.step h3{font-size:16px;margin-bottom:8px;}
.step p{font-size:13.8px;color:var(--muted);line-height:1.8;margin:0;}

/* ============ VOICES ============ */
.voice{
  height:100%;
  padding:26px 24px;
  border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.012));
  border:1px solid var(--line);
  transition:border-color .22s ease,transform .22s ease;
}
.voice:hover{border-color:rgba(255,79,147,.34);transform:translateY(-4px);}
.voice-stars{color:var(--pink);font-size:12.5px;letter-spacing:2px;margin-bottom:12px;}
.voice p{font-size:14.6px;color:#cfd8ea;line-height:1.9;margin:0 0 18px;}
.voice-who{display:flex;align-items:center;gap:11px;}
.avatar{
  width:38px;
  height:38px;
  border-radius:50%;
  display:grid;
  place-items:center;
  font-size:14px;
  font-weight:900;
  color:#04150f;
  background:linear-gradient(135deg,var(--neon),var(--violet));
}
.voice-who strong{display:block;font-size:13.6px;color:#fff;line-height:1.4;}
.voice-who span{font-size:12px;color:var(--muted);}

/* ============ FAQ ============ */
.faq-item{
  border-radius:var(--radius);
  background:rgba(255,255,255,.035);
  border:1px solid var(--line);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .22s ease,background .22s ease;
}
.faq-item:hover{border-color:rgba(60,240,194,.28);}
.faq-item[open]{
  border-color:rgba(60,240,194,.38);
  background:rgba(60,240,194,.055);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:18px 22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:15.4px;
  font-weight:700;
  color:#fff;
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::marker{content:"";}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;
  width:26px;
  height:26px;
  border-radius:8px;
  display:grid;
  place-items:center;
  font-size:17px;
  font-weight:700;
  color:var(--neon);
  background:rgba(60,240,194,.10);
  border:1px solid rgba(60,240,194,.26);
  transition:transform .25s ease,background .25s ease;
}
.faq-item[open] summary::after{content:"–";transform:rotate(180deg);background:rgba(60,240,194,.20);}
.faq-body{
  padding:0 22px 20px;
  font-size:14.6px;
  color:var(--muted);
  line-height:1.9;
}

/* ============ CTA BAND ============ */
.cta-band{
  position:relative;
  padding:56px 44px;
  border-radius:28px;
  text-align:center;
  overflow:hidden;
  background:
    radial-gradient(620px 300px at 18% 0%, rgba(60,240,194,.22), transparent 65%),
    radial-gradient(620px 320px at 84% 100%, rgba(138,107,255,.26), transparent 66%),
    linear-gradient(160deg,rgba(18,28,49,.96),rgba(9,14,26,.96));
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
}
.cta-band h2{
  font-size:clamp(23px,3vw,32px);
  margin-bottom:14px;
}
.cta-band p{
  max-width:660px;
  margin:0 auto 30px;
  color:var(--muted);
  font-size:15.4px;
  line-height:1.9;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  justify-content:center;
}

/* ============ FOOTER ============ */
.site-footer{
  margin-top:76px;
  padding:56px 0 26px;
  border-top:1px solid var(--line);
  background:rgba(5,8,15,.72);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr;
  gap:40px;
  padding-bottom:36px;
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-desc{font-size:14.2px;color:var(--muted);line-height:1.9;max-width:360px;margin:0;}
.footer-col h4{
  font-size:13px;
  font-weight:800;
  letter-spacing:1.4px;
  color:#fff;
  margin-bottom:16px;
  text-transform:uppercase;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{
  font-size:14.2px;
  color:var(--muted);
  transition:color .2s ease,padding-left .2s ease;
}
.footer-col a:hover{color:var(--neon);padding-left:4px;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  align-items:center;
  justify-content:space-between;
  padding-top:24px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
}
.footer-bottom .tech{color:#6f7d97;}

/* ============ RESPONSIVE ============ */
@media (max-width:1080px){
  .nav-link{padding:8px 11px;font-size:14px;}
  .live-badge{display:none;}
  .hero{padding:60px 0 54px;}
  .why-wrap{padding:34px;}
}
@media (max-width:900px){
  .header-inner{flex-wrap:nowrap;gap:12px;min-height:68px;}
  .nav-toggle{display:inline-flex;}
  .nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    margin-left:0;
    padding:14px 22px 20px;
    background:rgba(8,12,22,.98);
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 40px rgba(0,0,0,.5);
  }
  .nav.is-open{display:flex;}
  .nav-link{padding:12px 16px;border-radius:12px;font-size:15px;}
  .nav-link.is-active{border-radius:12px;}
  .header-actions .btn-sm{display:none;}
  .brand-text em{display:none;}
  .hero-grid{row-gap:38px;}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand-col{grid-column:1 / -1;}
  .cta-band{padding:46px 26px;}
  .rank-row{padding:16px 18px;gap:12px;}
  .rank-row:hover{padding-left:18px;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .brand-text strong{font-size:13.5px;}
  .brand-mark{width:38px;height:38px;font-size:17px;border-radius:11px;}
  .hero{padding:44px 0 40px;}
  .hero-title{letter-spacing:-.4px;}
  .hero-cta{gap:10px;}
  .hero-cta .btn{width:100%;}
  .section{padding:46px 0;}
  .why-wrap{padding:24px 18px;border-radius:20px;}
  .cat-card{padding:24px 20px;}
  .rank-row{flex-wrap:wrap;}
  .rank-main{flex:1 1 100%;order:3;}
  .rank-time{order:2;margin-left:auto;}
  .faq-item summary{padding:16px 16px;font-size:14.6px;}
  .faq-body{padding:0 16px 18px;}
  .cta-band{padding:38px 20px;border-radius:20px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:420px){
  .hero-stats{grid-template-columns:1fr;}
  .stat b{font-size:19px;}
}

/* roulang page: category2 */
:root{
  --bg:#070b16;
  --bg-soft:#0b1120;
  --panel:#101a2e;
  --panel-2:#16223c;
  --panel-3:#1c2a49;
  --line:rgba(126,158,224,.16);
  --line-strong:rgba(126,158,224,.32);
  --text:#eaf0ff;
  --text-2:#c3cfe8;
  --muted:#93a3c4;
  --neon:#35f0c8;
  --neon-2:#7b6cff;
  --pink:#ff4d8d;
  --amber:#ffc861;
  --radius-s:10px;
  --radius-m:16px;
  --radius-l:24px;
  --radius-pill:999px;
  --shadow-s:0 6px 18px rgba(3,7,18,.45);
  --shadow-m:0 16px 44px rgba(3,7,18,.55);
  --shadow-glow:0 0 0 1px rgba(53,240,200,.22),0 18px 44px rgba(19,224,190,.12);
  --space-1:8px;
  --space-2:14px;
  --space-3:22px;
  --space-4:34px;
  --space-5:54px;
  --space-6:84px;
  --maxw:1180px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:
    radial-gradient(900px 520px at 82% -6%, rgba(123,108,255,.20), transparent 62%),
    radial-gradient(760px 460px at 6% 4%, rgba(53,240,200,.13), transparent 60%),
    var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--neon);text-decoration:none;transition:color .22s ease,opacity .22s ease}
a:hover,a:focus{color:#7ef7dc}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.28;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
::selection{background:rgba(53,240,200,.28);color:#fff}
:focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:6px}

/* ---------- layout ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.section{padding:var(--space-6) 0}
.section--tight{padding:var(--space-5) 0}
.section-head{max-width:760px;margin-bottom:var(--space-4)}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--neon);
  padding:7px 14px;border-radius:var(--radius-pill);
  border:1px solid rgba(53,240,200,.28);
  background:rgba(53,240,200,.07);
  margin-bottom:16px;
}
.eyebrow i{font-size:11px}
.section-title{font-size:clamp(24px,3.1vw,36px);color:#fff}
.section-sub{margin-top:14px;color:var(--muted);font-size:16.5px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,22,.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;gap:26px;
  min-height:74px;padding-top:10px;padding-bottom:10px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;
  display:grid;place-items:center;
  border-radius:13px;
  font-size:20px;font-weight:800;color:#04120f;
  background:linear-gradient(140deg,var(--neon),#6fe0ff 55%,var(--neon-2));
  box-shadow:0 8px 22px rgba(53,240,200,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16.5px;font-weight:800;letter-spacing:.01em}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.16em}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;
  padding:9px 14px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;color:var(--text-2);
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:#fff;background:rgba(126,158,224,.10)}
.nav-link.is-active{color:#061412;background:linear-gradient(120deg,var(--neon),#78e9ff)}
.nav-link.is-active:hover{color:#061412}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:6px}
.live-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;color:#b9ffef;
  padding:6px 12px;border-radius:var(--radius-pill);
  border:1px solid rgba(53,240,200,.3);
  background:rgba(53,240,200,.08);
  white-space:nowrap;
}
.live-badge .dot{
  width:7px;height:7px;border-radius:50%;background:var(--neon);
  box-shadow:0 0 0 0 rgba(53,240,200,.6);
  animation:pulse 2.2s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(53,240,200,.55)}
  70%{box-shadow:0 0 0 9px rgba(53,240,200,0)}
  100%{box-shadow:0 0 0 0 rgba(53,240,200,0)}
}
.nav-toggle{
  display:none;width:44px;height:44px;padding:0;
  border:1px solid var(--line-strong);border-radius:12px;
  background:rgba(126,158,224,.08);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:19px;height:2px;border-radius:2px;background:var(--text);transition:transform .25s ease,opacity .25s ease}
.nav-toggle:hover{background:rgba(126,158,224,.16)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:var(--radius-pill);
  font-size:15.5px;font-weight:700;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .24s ease,background .24s ease,color .2s ease,border-color .2s ease;
}
.btn i{font-size:14px}
.btn-primary{
  color:#04120f;
  background:linear-gradient(120deg,var(--neon) 0%,#79e6ff 58%,#a79bff 100%);
  box-shadow:0 12px 30px rgba(53,240,200,.24);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(53,240,200,.34);color:#04120f}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 18px rgba(53,240,200,.26)}
.btn-ghost{
  color:var(--text);background:rgba(126,158,224,.08);
  border-color:var(--line-strong);
}
.btn-ghost:hover{background:rgba(126,158,224,.18);border-color:rgba(53,240,200,.5);color:#fff;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:10px 18px;font-size:14px}

/* ---------- hero ---------- */
.hero{position:relative;padding:64px 0 56px;overflow:hidden}
.hero::after{
  content:"";position:absolute;inset:auto 0 -1px 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,240,200,.45),rgba(123,108,255,.45),transparent);
}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center}
.hero h1{font-size:clamp(29px,4.2vw,48px);letter-spacing:-.02em;color:#fff}
.hero h1 .hl{
  background:linear-gradient(100deg,var(--neon),#8fe6ff 45%,#b5a8ff);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{margin-top:20px;font-size:17px;color:var(--text-2);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:var(--radius-pill);
  font-size:13px;font-weight:600;color:var(--text-2);
  background:rgba(126,158,224,.08);
  border:1px solid var(--line);
}
.chip i{color:var(--neon);font-size:12px}
.chip--pink{border-color:rgba(255,77,141,.34);background:rgba(255,77,141,.1);color:#ffb3cd}
.chip--pink i{color:var(--pink)}
.chip--amber{border-color:rgba(255,200,97,.32);background:rgba(255,200,97,.1);color:#ffe0a6}
.chip--amber i{color:var(--amber)}

/* hero side panel */
.marquee-panel{
  position:relative;
  border-radius:var(--radius-l);
  border:1px solid var(--line-strong);
  background:linear-gradient(160deg,var(--panel-2),#0c1526 72%);
  box-shadow:var(--shadow-m);
  padding:24px;
  overflow:hidden;
}
.marquee-panel::before{
  content:"";position:absolute;inset:-40% -20% auto auto;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,240,200,.20),transparent 66%);
  pointer-events:none;
}
.panel-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;position:relative}
.panel-title{font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em}
.panel-title span{color:var(--muted);font-weight:500;margin-left:6px;font-size:12.5px}
.status{
  font-size:11.5px;font-weight:700;letter-spacing:.08em;
  padding:4px 11px;border-radius:var(--radius-pill);
  color:#04120f;background:var(--neon);
}
.hot-list{display:flex;flex-direction:column;gap:10px;position:relative}
.hot-item{
  display:flex;align-items:center;gap:13px;
  padding:13px 15px;border-radius:var(--radius-m);
  background:rgba(9,16,30,.72);
  border:1px solid var(--line);
  transition:border-color .22s ease,transform .22s ease,background .22s ease;
}
.hot-item:hover{border-color:rgba(53,240,200,.42);transform:translateX(3px);background:rgba(14,24,44,.9)}
.hot-rank{
  flex:0 0 30px;width:30px;height:30px;border-radius:9px;
  display:grid;place-items:center;
  font-size:13px;font-weight:800;color:#04120f;
  background:linear-gradient(140deg,var(--neon),#7fd8ff);
}
.hot-item:nth-child(2) .hot-rank{background:linear-gradient(140deg,#a79bff,#7b6cff);color:#fff}
.hot-item:nth-child(3) .hot-rank{background:linear-gradient(140deg,var(--amber),#ff9d5c);color:#301a00}
.hot-item:nth-child(4) .hot-rank,.hot-item:nth-child(5) .hot-rank{background:rgba(126,158,224,.16);color:var(--text-2)}
.hot-body{min-width:0;flex:1}
.hot-body strong{display:block;font-size:14.5px;font-weight:700;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hot-body small{display:block;font-size:12px;color:var(--muted);margin-top:2px}
.hot-time{font-size:12px;color:var(--neon);font-weight:700;white-space:nowrap}
.panel-foot{margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12.5px;color:var(--muted);position:relative}

/* ---------- stat strip ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  overflow:hidden;
  margin-top:8px;
}
.stat-cell{background:var(--bg-soft);padding:24px 22px;text-align:center;transition:background .25s ease}
.stat-cell:hover{background:var(--panel)}
.stat-num{font-size:clamp(24px,2.6vw,32px);font-weight:800;color:#fff;letter-spacing:-.02em}
.stat-num span{font-size:14px;font-weight:700;color:var(--neon);margin-left:3px}
.stat-label{margin-top:6px;font-size:13px;color:var(--muted)}

/* ---------- cards ---------- */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{
  position:relative;
  padding:26px 24px;
  border-radius:var(--radius-l);
  background:linear-gradient(165deg,var(--panel),#0b1424 85%);
  border:1px solid var(--line);
  box-shadow:var(--shadow-s);
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
  height:100%;
}
.card::before{
  content:"";position:absolute;left:24px;right:24px;top:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--neon),transparent 70%);
  opacity:0;transition:opacity .26s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-m)}
.card:hover::before{opacity:1}
.card-icon{
  width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;
  font-size:18px;color:var(--neon);
  background:rgba(53,240,200,.10);
  border:1px solid rgba(53,240,200,.24);
  margin-bottom:18px;
}
.card-icon.violet{color:#b0a5ff;background:rgba(123,108,255,.12);border-color:rgba(123,108,255,.28)}
.card-icon.pink{color:#ff9ebd;background:rgba(255,77,141,.12);border-color:rgba(255,77,141,.28)}
.card-icon.amber{color:#ffd694;background:rgba(255,200,97,.12);border-color:rgba(255,200,97,.28)}
.card h3{font-size:18.5px;color:#fff;margin-bottom:10px}
.card p{font-size:14.8px;color:var(--muted);line-height:1.78}
.card-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}
.tag{
  font-size:12px;font-weight:600;color:var(--text-2);
  padding:4px 10px;border-radius:var(--radius-pill);
  background:rgba(126,158,224,.09);
  border:1px solid var(--line);
}
.card-foot{margin-top:18px;padding-top:14px;border-top:1px dashed var(--line);font-size:12.5px;color:var(--muted);display:flex;justify-content:space-between;gap:10px}
.card-foot b{color:var(--neon);font-weight:700}

/* ---------- checklist panel ---------- */
.split{display:grid;grid-template-columns:.94fr 1.06fr;gap:48px;align-items:center}
.check-list{display:flex;flex-direction:column;gap:16px;margin-top:26px}
.check-item{display:flex;gap:14px;align-items:flex-start}
.check-mark{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;margin-top:2px;
  display:grid;place-items:center;font-size:12px;
  color:#04120f;background:linear-gradient(140deg,var(--neon),#7fd8ff);
}
.check-item strong{display:block;color:#fff;font-size:16px;margin-bottom:4px}
.check-item p{font-size:14.5px;color:var(--muted)}
.frame-panel{
  border-radius:var(--radius-l);
  border:1px solid var(--line-strong);
  background:linear-gradient(160deg,#0e1829,#0a1120);
  padding:26px;
  box-shadow:var(--shadow-m);
}
.frame-row{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:15px 0;border-bottom:1px dashed var(--line);
}
.frame-row:last-child{border-bottom:0;padding-bottom:0}
.frame-row:first-child{padding-top:0}
.frame-key{font-size:14px;color:var(--muted)}
.frame-val{font-size:14.5px;font-weight:700;color:#fff;text-align:right}
.frame-val em{font-style:normal;color:var(--neon);font-size:12px;margin-left:6px;font-weight:600}
.bar{height:6px;border-radius:6px;background:rgba(126,158,224,.14);overflow:hidden;margin-top:10px}
.bar>i{display:block;height:100%;border-radius:6px;background:linear-gradient(90deg,var(--neon),#7b6cff)}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step}
.step{
  position:relative;padding:28px 24px 24px;
  border-radius:var(--radius-l);
  background:linear-gradient(170deg,var(--panel-2),#0a1221 88%);
  border:1px solid var(--line);
  transition:transform .26s ease,border-color .26s ease;
}
.step:hover{transform:translateY(-4px);border-color:rgba(53,240,200,.38)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;
  font-size:15px;font-weight:800;color:var(--neon);
  background:rgba(53,240,200,.1);border:1px solid rgba(53,240,200,.28);
  margin-bottom:16px;
}
.step h3{font-size:17.5px;color:#fff;margin-bottom:9px}
.step p{font-size:14.5px;color:var(--muted)}
.step-line{position:absolute;right:-13px;top:46px;color:rgba(126,158,224,.4);font-size:14px}
.step:last-child .step-line{display:none}

/* ---------- scene list rows ---------- */
.rows{display:flex;flex-direction:column;gap:14px}
.row-item{
  display:grid;grid-template-columns:64px 1fr auto;align-items:center;gap:20px;
  padding:20px 24px;border-radius:var(--radius-m);
  background:rgba(16,26,46,.66);
  border:1px solid var(--line);
  transition:border-color .22s ease,background .22s ease,transform .22s ease;
}
.row-item:hover{border-color:rgba(53,240,200,.36);background:rgba(22,34,60,.9);transform:translateX(4px)}
.row-num{font-size:22px;font-weight:800;color:rgba(126,158,224,.55);letter-spacing:-.02em}
.row-item:hover .row-num{color:var(--neon)}
.row-main strong{display:block;font-size:16.5px;color:#fff;margin-bottom:4px}
.row-main span{font-size:13.8px;color:var(--muted)}
.row-badge{
  font-size:12px;font-weight:700;color:var(--neon);
  padding:6px 13px;border-radius:var(--radius-pill);
  border:1px solid rgba(53,240,200,.3);background:rgba(53,240,200,.08);
  white-space:nowrap;
}

/* ---------- audience ---------- */
.aud-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.aud{
  display:flex;gap:16px;padding:24px;
  border-radius:var(--radius-l);
  background:rgba(16,26,46,.55);
  border:1px solid var(--line);
  transition:background .24s ease,border-color .24s ease;
}
.aud:hover{background:rgba(22,34,60,.85);border-color:var(--line-strong)}
.aud-ico{
  flex:0 0 44px;width:44px;height:44px;border-radius:13px;
  display:grid;place-items:center;font-size:17px;
  color:#b0a5ff;background:rgba(123,108,255,.12);border:1px solid rgba(123,108,255,.26);
}
.aud h3{font-size:16.5px;color:#fff;margin-bottom:6px}
.aud p{font-size:14.2px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:rgba(16,26,46,.55);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .22s ease,background .22s ease;
}
.faq-item[open]{border-color:rgba(53,240,200,.36);background:rgba(22,34,60,.82)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:19px 24px;
  font-size:16px;font-weight:700;color:#fff;
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--neon)}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:12px;color:var(--neon);
  transition:transform .26s ease;flex:0 0 auto;
}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-answer{padding:0 24px 22px;font-size:14.9px;color:var(--muted);line-height:1.85}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  border-radius:var(--radius-l);
  border:1px solid rgba(53,240,200,.26);
  background:
    radial-gradient(600px 260px at 88% 12%, rgba(123,108,255,.28), transparent 64%),
    radial-gradient(520px 240px at 4% 90%, rgba(53,240,200,.20), transparent 62%),
    linear-gradient(140deg,#0f1c33,#0a1220);
  padding:52px 44px;
  overflow:hidden;
  box-shadow:var(--shadow-glow);
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(22px,2.9vw,32px);color:#fff;max-width:620px}
.cta-band p{margin-top:12px;color:var(--text-2);font-size:15.5px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:13px}

/* ---------- footer ---------- */
.site-footer{
  margin-top:var(--space-6);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,17,32,.4),#060a13 70%);
  padding-top:var(--space-5);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:44px;
  padding-bottom:var(--space-4);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-desc{font-size:14.2px;color:var(--muted);max-width:400px;line-height:1.85}
.footer-col h4{font-size:14px;letter-spacing:.1em;color:#fff;margin-bottom:16px;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14.2px;color:var(--muted)}
.footer-col a:hover{color:var(--neon)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0 30px;border-top:1px solid var(--line);
  font-size:12.8px;color:#7e8cab;
}
.footer-bottom .tech{color:#6b7897}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .split{grid-template-columns:1fr;gap:34px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .step-line{display:none}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .nav{gap:2px}
  .nav-link{padding:8px 11px;font-size:14px}
  .live-badge{display:none}
  .cta-band{padding:42px 32px}
}
@media (max-width:820px){
  .header-inner{min-height:66px;gap:14px}
  .nav{
    position:absolute;left:16px;right:16px;top:calc(100% + 10px);
    flex-direction:column;align-items:stretch;gap:6px;
    padding:14px;
    border-radius:var(--radius-m);
    background:rgba(10,17,32,.98);
    border:1px solid var(--line-strong);
    box-shadow:var(--shadow-m);
    display:none;
  }
  .nav.is-open{display:flex}
  .nav-link{padding:12px 16px;text-align:left;font-size:15px}
  .nav-toggle{display:flex}
  .header-actions{margin-left:auto}
  .brand-text em{display:none}
  .grid-3,.grid-2,.aud-grid{grid-template-columns:1fr}
  .row-item{grid-template-columns:44px 1fr;gap:14px}
  .row-badge{grid-column:2;justify-self:start}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .section{padding:var(--space-5) 0}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand-mark{width:38px;height:38px;flex:0 0 38px;font-size:18px}
  .brand-text strong{font-size:14.5px}
  .hero{padding:44px 0 40px}
  .hero h1{font-size:26px}
  .hero-lead{font-size:15.5px}
  .btn{width:100%;padding:14px 20px}
  .hero-actions,.cta-actions{flex-direction:column;align-items:stretch}
  .header-actions .btn-sm{display:none}
  .stat-strip{grid-template-columns:1fr}
  .cta-band{padding:34px 22px}
  .marquee-panel,.frame-panel{padding:20px}
  .row-item{padding:16px 18px}
  .faq-item summary{padding:16px 18px;font-size:15px}
  .faq-answer{padding:0 18px 18px;font-size:14.2px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}

/* roulang page: category1 */
:root{
  --bg:#080a12;
  --bg-soft:#0c0f1a;
  --panel:#111627;
  --panel-2:#161c2f;
  --panel-3:#1b2237;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(76,240,192,.32);
  --text:#eef2ff;
  --muted:#9aa4c0;
  --muted-2:#7b85a3;
  --mint:#4cf0c0;
  --mint-deep:#1fbf98;
  --violet:#7b61ff;
  --amber:#ffcf5c;
  --rose:#ff6b8a;
  --radius-lg:22px;
  --radius:16px;
  --radius-sm:11px;
  --shadow:0 20px 50px rgba(0,0,0,.45);
  --shadow-soft:0 10px 28px rgba(0,0,0,.28);
  --container:1180px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}

html{scroll-behavior:smooth;}

body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(760px 420px at 12% -6%,rgba(76,240,192,.13),transparent 68%),
    radial-gradient(680px 420px at 92% 4%,rgba(123,97,255,.16),transparent 70%),
    radial-gradient(560px 360px at 50% 100%,rgba(255,207,92,.06),transparent 72%);
  z-index:0;
}

h1,h2,h3,h4,h5{margin:0 0 .6em;line-height:1.25;font-weight:800;letter-spacing:.01em;}
h1{font-size:clamp(1.95rem,4.2vw,3.2rem);}
h2{font-size:clamp(1.5rem,2.7vw,2.15rem);}
h3{font-size:1.14rem;}
p{margin:0 0 1em;color:var(--muted);}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),opacity .22s var(--ease);}
a:hover{color:var(--mint);}
img{max-width:100%;height:auto;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 22px;
  position:relative;
  z-index:1;
}

main{position:relative;z-index:1;}

section{padding:78px 0;}
.section-tight{padding:58px 0;}

.section-head{
  max-width:760px;
  margin:0 auto 44px;
  text-align:center;
}
.section-head.left{
  margin:0 0 40px;
  text-align:left;
  max-width:720px;
}
.section-head p{margin-bottom:0;font-size:1rem;}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.76rem;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mint);
  background:rgba(76,240,192,.1);
  border:1px solid var(--line-strong);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:18px;
}
.eyebrow i{font-size:.72rem;}

.lead{font-size:1.06rem;color:#b8c1d9;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(8,10,18,.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease),background .3s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 14px 34px rgba(0,0,0,.5);}

.header-inner{
  display:flex;
  align-items:center;
  gap:22px;
  min-height:74px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.brand-mark{
  width:42px;
  height:42px;
  display:grid;
  place-items:center;
  border-radius:13px;
  font-weight:900;
  font-size:1.12rem;
  color:#04140f;
  background:linear-gradient(140deg,var(--mint),#58d8ff 55%,var(--violet));
  box-shadow:0 8px 22px rgba(76,240,192,.28);
  flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.24;}
.brand-text strong{font-size:.98rem;font-weight:800;letter-spacing:.01em;color:var(--text);}
.brand-text em{
  font-style:normal;
  font-size:.68rem;
  letter-spacing:.22em;
  color:var(--muted-2);
  text-transform:uppercase;
}

.nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  padding:9px 14px;
  border-radius:10px;
  font-size:.92rem;
  font-weight:600;
  color:#c2cae0;
  white-space:nowrap;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.06);}
.nav-link.is-active{color:var(--mint);background:rgba(76,240,192,.1);}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:50%;bottom:-1px;
  transform:translateX(-50%);
  width:20px;height:2px;
  border-radius:2px;
  background:var(--mint);
}

.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.live-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.76rem;
  font-weight:700;
  color:var(--mint);
  background:rgba(76,240,192,.09);
  border:1px solid var(--line-strong);
  border-radius:999px;
  padding:6px 12px;
  white-space:nowrap;
}
.live-badge .dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 0 4px rgba(76,240,192,.16);
  animation:pulse 2.1s infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 3px rgba(76,240,192,.18);}
  50%{box-shadow:0 0 0 7px rgba(76,240,192,.04);}
}

.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:11px;
  background:rgba(255,255,255,.04);
  padding:0 10px;
}
.nav-toggle span{
  display:block;
  height:2px;
  border-radius:2px;
  background:var(--text);
  transition:transform .26s var(--ease),opacity .2s var(--ease);
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  padding:13px 26px;
  border-radius:12px;
  border:1px solid transparent;
  font-size:.95rem;
  font-weight:800;
  letter-spacing:.01em;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn i{font-size:.86rem;}
.btn-primary{
  background:linear-gradient(135deg,var(--mint),#5be0ff 70%,#7ce7ff);
  color:#04150f;
  box-shadow:0 12px 28px rgba(76,240,192,.26);
}
.btn-primary:hover{
  color:#04150f;
  transform:translateY(-2px);
  box-shadow:0 18px 36px rgba(76,240,192,.34);
}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:rgba(255,255,255,.03);
  border-color:var(--line);
  color:var(--text);
}
.btn-ghost:hover{
  border-color:var(--line-strong);
  color:var(--mint);
  background:rgba(76,240,192,.08);
  transform:translateY(-2px);
}
.btn-sm{padding:9px 18px;font-size:.85rem;border-radius:10px;}
.btn-block{width:100%;}

/* ---------- badges / tags ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:.74rem;
  font-weight:700;
  padding:4px 11px;
  border-radius:999px;
  border:1px solid var(--line);
  color:#c6cee4;
  background:rgba(255,255,255,.04);
  white-space:nowrap;
}
.badge-mint{color:var(--mint);border-color:var(--line-strong);background:rgba(76,240,192,.1);}
.badge-violet{color:#b8abff;border-color:rgba(123,97,255,.4);background:rgba(123,97,255,.14);}
.badge-amber{color:var(--amber);border-color:rgba(255,207,92,.35);background:rgba(255,207,92,.1);}

.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- hero ---------- */
.hero{
  padding:66px 0 74px;
  border-bottom:1px solid var(--line);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.06fr .94fr;
  gap:52px;
  align-items:center;
}
.hero h1 span.hl{
  background:linear-gradient(120deg,var(--mint),#7ce7ff 46%,var(--violet));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero p.lead{max-width:560px;margin-bottom:26px;}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:28px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:26px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.hero-meta div{min-width:96px;}
.hero-meta strong{
  display:block;
  font-size:1.4rem;
  font-weight:900;
  color:var(--text);
  letter-spacing:.01em;
}
.hero-meta span{font-size:.82rem;color:var(--muted-2);}

/* stage card */
.stage{
  position:relative;
  background:linear-gradient(160deg,var(--panel-2),var(--panel));
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:18px;
  box-shadow:var(--shadow);
}
.stage::after{
  content:"";
  position:absolute;
  inset:-1px;
  border-radius:calc(var(--radius-lg) + 1px);
  padding:1px;
  background:linear-gradient(150deg,rgba(76,240,192,.55),rgba(123,97,255,.4),transparent 70%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;
  mask-composite:exclude;
  pointer-events:none;
}
.stage-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-bottom:14px;
}
.stage-top .left-dots{display:flex;gap:6px;}
.stage-top .left-dots i{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.16);display:block;}
.stage-top .left-dots i:first-child{background:rgba(255,107,138,.7);}
.stage-top .left-dots i:nth-child(2){background:rgba(255,207,92,.7);}
.stage-top .left-dots i:nth-child(3){background:rgba(76,240,192,.7);}

.screen{
  position:relative;
  border-radius:var(--radius);
  aspect-ratio:16/9;
  background:
    radial-gradient(120% 100% at 20% 0%,rgba(76,240,192,.24),transparent 60%),
    radial-gradient(120% 120% at 90% 100%,rgba(123,97,255,.34),transparent 64%),
    linear-gradient(160deg,#141a2b,#0b0f1a);
  border:1px solid rgba(255,255,255,.07);
  overflow:hidden;
  display:grid;
  place-items:center;
}
.screen::before{
  content:"";
  position:absolute;
  inset:0;
  background:repeating-linear-gradient(180deg,rgba(255,255,255,.032) 0 1px,transparent 1px 4px);
  opacity:.55;
}
.play-btn{
  position:relative;
  width:66px;height:66px;
  border-radius:50%;
  display:grid;
  place-items:center;
  background:rgba(76,240,192,.94);
  color:#04150f;
  font-size:1.2rem;
  box-shadow:0 0 0 12px rgba(76,240,192,.12),0 16px 34px rgba(0,0,0,.4);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.screen:hover .play-btn{transform:scale(1.06);box-shadow:0 0 0 16px rgba(76,240,192,.1),0 18px 38px rgba(0,0,0,.45);}
.screen-tag{
  position:absolute;
  top:12px;left:12px;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:.72rem;
  font-weight:800;
  padding:4px 10px;
  border-radius:8px;
  background:rgba(4,12,18,.72);
  border:1px solid rgba(255,255,255,.12);
  color:var(--mint);
}
.screen-hint{
  position:absolute;
  bottom:12px;right:12px;
  font-size:.72rem;
  color:#c9d1e6;
  background:rgba(4,12,18,.7);
  border:1px solid rgba(255,255,255,.1);
  border-radius:8px;
  padding:3px 9px;
}

.timeline{margin-top:16px;}
.timeline .bar{
  height:6px;
  border-radius:999px;
  background:rgba(255,255,255,.09);
  overflow:hidden;
}
.timeline .bar span{
  display:block;
  height:100%;
  width:62%;
  border-radius:999px;
  background:linear-gradient(90deg,var(--mint),#66e0ff,var(--violet));
}
.timeline .marks{
  display:flex;
  justify-content:space-between;
  font-size:.74rem;
  color:var(--muted-2);
  margin-top:8px;
}
.stage-foot{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:10px;
  margin-top:16px;
}
.stage-foot div{
  background:rgba(255,255,255,.035);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  padding:10px 12px;
  text-align:center;
}
.stage-foot strong{display:block;font-size:.98rem;color:var(--text);}
.stage-foot span{font-size:.72rem;color:var(--muted-2);}

/* ---------- grids ---------- */
.grid{display:grid;gap:20px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}

/* ---------- cards ---------- */
.card{
  background:linear-gradient(165deg,var(--panel),var(--panel-2));
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 24px;
  transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
  position:relative;
  overflow:hidden;
}
.card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-soft);
}
.card h3{margin-bottom:10px;font-size:1.06rem;}
.card p{margin-bottom:0;font-size:.92rem;color:var(--muted);}
.card-icon{
  width:46px;height:46px;
  border-radius:13px;
  display:grid;
  place-items:center;
  font-size:1.05rem;
  margin-bottom:18px;
  color:var(--mint);
  background:rgba(76,240,192,.1);
  border:1px solid var(--line-strong);
}
.card-icon.violet{color:#b8abff;background:rgba(123,97,255,.13);border-color:rgba(123,97,255,.34);}
.card-icon.amber{color:var(--amber);background:rgba(255,207,92,.1);border-color:rgba(255,207,92,.3);}
.card-icon.rose{color:var(--rose);background:rgba(255,107,138,.1);border-color:rgba(255,107,138,.3);}

/* ---------- clip list ---------- */
.clip-list{display:flex;flex-direction:column;gap:14px;}
.clip{
  display:grid;
  grid-template-columns:64px 1fr auto;
  gap:18px;
  align-items:center;
  padding:20px 22px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(150deg,var(--panel),rgba(22,28,47,.72));
  transition:border-color .24s var(--ease),transform .24s var(--ease),background .24s var(--ease);
}
.clip:hover{border-color:var(--line-strong);transform:translateX(4px);background:linear-gradient(150deg,var(--panel-2),rgba(27,34,55,.8));}
.clip-num{
  width:56px;height:56px;
  border-radius:14px;
  display:grid;
  place-items:center;
  font-weight:900;
  font-size:1.04rem;
  color:var(--mint);
  background:rgba(76,240,192,.08);
  border:1px solid var(--line-strong);
}
.clip-body h3{margin-bottom:6px;font-size:1rem;}
.clip-body p{margin-bottom:8px;font-size:.88rem;color:var(--muted);}
.clip-meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  align-items:center;
  font-size:.78rem;
  color:var(--muted-2);
}
.clip-meta i{color:var(--mint);margin-right:4px;}
.clip-go{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.86rem;
  font-weight:700;
  color:var(--mint);
  border:1px solid var(--line-strong);
  background:rgba(76,240,192,.07);
  border-radius:10px;
  padding:9px 16px;
  transition:background .22s var(--ease),transform .22s var(--ease);
  white-space:nowrap;
}
.clip-go:hover{background:rgba(76,240,192,.16);transform:translateX(2px);color:var(--mint);}

/* ---------- steps ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
  counter-reset:step;
}
.step{
  position:relative;
  padding:26px 22px 24px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:rgba(255,255,255,.025);
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.step:hover{background:rgba(76,240,192,.05);border-color:var(--line-strong);}
.step::before{
  counter-increment:step;
  content:"0" counter(step);
  display:block;
  font-size:.78rem;
  font-weight:900;
  letter-spacing:.16em;
  color:var(--mint);
  margin-bottom:12px;
}
.step h3{font-size:.98rem;margin-bottom:8px;}
.step p{font-size:.87rem;margin-bottom:0;}

/* ---------- data strip ---------- */
.data-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
}
.data-strip div{
  background:var(--panel);
  padding:26px 20px;
  text-align:center;
}
.data-strip strong{
  display:block;
  font-size:clamp(1.5rem,3vw,2.1rem);
  font-weight:900;
  color:var(--mint);
  letter-spacing:.01em;
}
.data-strip span{font-size:.84rem;color:var(--muted-2);}

/* ---------- quotes ---------- */
.quote{
  background:linear-gradient(165deg,var(--panel-2),var(--panel));
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 24px;
  display:flex;
  flex-direction:column;
  gap:14px;
  height:100%;
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.quote:hover{transform:translateY(-3px);border-color:var(--line-strong);}
.quote .stars{color:var(--amber);font-size:.82rem;letter-spacing:2px;}
.quote p{font-size:.93rem;color:#c3cbe0;margin-bottom:0;}
.quote-user{
  display:flex;
  align-items:center;
  gap:11px;
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
}
.avatar{
  width:38px;height:38px;
  border-radius:50%;
  display:grid;
  place-items:center;
  font-weight:800;
  font-size:.9rem;
  color:#04150f;
  background:linear-gradient(140deg,var(--mint),#65d8ff);
  flex-shrink:0;
}
.avatar.v2{background:linear-gradient(140deg,#b8abff,var(--violet));color:#0c0620;}
.avatar.v3{background:linear-gradient(140deg,var(--amber),#ffa35c);color:#231502;}
.quote-user strong{display:block;font-size:.88rem;color:var(--text);}
.quote-user span{font-size:.76rem;color:var(--muted-2);}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
details.faq{
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:rgba(255,255,255,.028);
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
details.faq[open]{
  border-color:var(--line-strong);
  background:rgba(76,240,192,.05);
}
details.faq summary{
  list-style:none;
  cursor:pointer;
  padding:18px 54px 18px 22px;
  font-weight:700;
  font-size:.98rem;
  color:var(--text);
  position:relative;
}
details.faq summary::-webkit-details-marker{display:none;}
details.faq summary::after{
  content:"\f078";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;
  right:22px;
  top:50%;
  transform:translateY(-50%);
  font-size:.72rem;
  color:var(--mint);
  transition:transform .26s var(--ease);
}
details.faq[open] summary::after{transform:translateY(-50%) rotate(180deg);}
details.faq .faq-body{
  padding:0 22px 20px;
  font-size:.92rem;
  color:var(--muted);
  line-height:1.8;
  border-top:1px solid var(--line);
  padding-top:16px;
  margin:0 22px 20px;
  padding-left:0;
  padding-right:0;
}

/* ---------- cta ---------- */
.cta-panel{
  position:relative;
  border-radius:var(--radius-lg);
  border:1px solid var(--line-strong);
  background:
    radial-gradient(90% 130% at 8% 0%,rgba(76,240,192,.16),transparent 62%),
    radial-gradient(90% 130% at 96% 100%,rgba(123,97,255,.2),transparent 65%),
    linear-gradient(160deg,#101625,#0b0f1a);
  padding:52px 46px;
  display:grid;
  grid-template-columns:1.3fr .7fr;
  gap:34px;
  align-items:center;
  overflow:hidden;
}
.cta-panel::before{
  content:"";
  position:absolute;
  width:280px;height:280px;
  border-radius:50%;
  border:1px solid rgba(76,240,192,.18);
  right:-90px;top:-110px;
  pointer-events:none;
}
.cta-panel h2{margin-bottom:12px;}
.cta-panel p{margin-bottom:0;max-width:560px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;}

/* ---------- footer ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:rgba(6,8,14,.92);
  padding:56px 0 26px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr;
  gap:44px;
  padding-bottom:38px;
  border-bottom:1px solid var(--line);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-desc{font-size:.9rem;color:var(--muted-2);max-width:420px;margin-bottom:0;}
.footer-col h4{
  font-size:.86rem;
  letter-spacing:.1em;
  color:var(--text);
  margin-bottom:16px;
  font-weight:800;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{
  font-size:.9rem;
  color:var(--muted);
}
.footer-col ul li a:hover{color:var(--mint);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  padding-top:22px;
  font-size:.82rem;
  color:var(--muted-2);
}
.footer-bottom .tech{color:#5f6785;}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  section{padding:62px 0;}
  .hero{padding:52px 0 62px;}
  .hero-grid{grid-template-columns:1fr;gap:38px;}
  .hero p.lead{max-width:none;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .data-strip{grid-template-columns:repeat(2,1fr);}
  .cta-panel{grid-template-columns:1fr;padding:42px 34px;}
  .cta-actions{flex-direction:row;flex-wrap:wrap;}
}

@media (max-width:900px){
  .header-inner{flex-wrap:wrap;gap:12px;min-height:68px;}
  .nav{
    position:absolute;
    top:100%;
    left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:14px 22px 18px;
    background:rgba(11,15,26,.98);
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 40px rgba(0,0,0,.5);
    display:none;
    margin-left:0;
  }
  .nav.is-open{display:flex;}
  .nav-link{padding:12px 14px;font-size:.96rem;}
  .nav-link.is-active::after{left:14px;transform:none;width:14px;bottom:8px;}
  .nav-toggle{display:flex;margin-left:auto;}
  .header-actions{margin-left:auto;}
  .live-badge{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand-col{grid-column:1 / -1;}
}

@media (max-width:768px){
  section{padding:52px 0;}
  .section-tight{padding:42px 0;}
  .section-head{margin-bottom:32px;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .data-strip{grid-template-columns:1fr 1fr;}
  .clip{grid-template-columns:1fr;gap:14px;}
  .clip-num{width:46px;height:46px;font-size:.94rem;}
  .clip-go{justify-self:start;}
  .hero-meta{gap:20px;}
  .cta-panel{padding:34px 24px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .stage-foot{grid-template-columns:1fr 1fr;}
  .stage-foot div:last-child{grid-column:1 / -1;}
}

@media (max-width:520px){
  body{font-size:15px;}
  .container{padding:0 16px;}
  .brand-text strong{font-size:.9rem;}
  .brand-text em{font-size:.62rem;letter-spacing:.18em;}
  .brand-mark{width:38px;height:38px;font-size:1rem;}
  .btn{padding:12px 20px;font-size:.9rem;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .hero-meta strong{font-size:1.2rem;}
  .data-strip{grid-template-columns:1fr;}
  .stage{padding:14px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  details.faq summary{padding:16px 46px 16px 16px;font-size:.94rem;}
  details.faq summary::after{right:16px;}
  details.faq .faq-body{margin:0 16px 18px;font-size:.9rem;}
}

/* roulang page: category3 */
:root{
  --bg:#070a14;
  --bg-soft:#0b1020;
  --panel:#111730;
  --panel-2:#151c38;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.18);
  --text:#eef2ff;
  --muted:#98a3c4;
  --cyan:#2ee6c8;
  --violet:#8b5cf6;
  --pink:#ff4d8d;
  --amber:#ffc857;
  --radius-lg:22px;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 18px 48px rgba(2,5,18,.55);
  --shadow-hover:0 26px 64px rgba(46,230,200,.16);
  --gap:clamp(18px,2.4vw,32px);
  --max:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(139,92,246,.24), transparent 62%),
    radial-gradient(760px 460px at 88% 4%, rgba(46,230,200,.16), transparent 60%),
    var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  min-height:100vh;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease;}
a:hover{color:var(--cyan);}
button{font:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:800;letter-spacing:.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 clamp(16px,3.2vw,32px);}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,10,20,.82);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;gap:clamp(14px,2vw,28px);
  min-height:74px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:42px;height:42px;border-radius:13px;
  display:grid;place-items:center;
  font-weight:900;font-size:20px;color:#04121a;
  background:linear-gradient(135deg,var(--cyan),#61f0a4 60%,var(--violet));
  box-shadow:0 10px 26px rgba(46,230,200,.34);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:16px;letter-spacing:.02em;}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.16em;}
.nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;
  padding:9px 14px;border-radius:11px;
  font-size:14.5px;font-weight:600;color:#c3cbe6;
  transition:background .22s ease,color .22s ease,transform .22s ease;
}
.nav-link:hover{background:rgba(255,255,255,.06);color:#fff;transform:translateY(-1px);}
.nav-link.is-active{color:#04121a;background:linear-gradient(135deg,var(--cyan),#7ef0c0);box-shadow:0 10px 24px rgba(46,230,200,.26);}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.live-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;color:#b8f7e8;
  padding:6px 12px;border-radius:999px;
  border:1px solid rgba(46,230,200,.34);
  background:rgba(46,230,200,.09);
  white-space:nowrap;
}
.live-badge .dot{
  width:7px;height:7px;border-radius:50%;background:var(--cyan);
  box-shadow:0 0 0 4px rgba(46,230,200,.18);
  animation:pulse 1.9s infinite;
}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.5;transform:scale(.82);}}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 22px;border-radius:12px;border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;
  transition:transform .2s ease,box-shadow .24s ease,background .24s ease,border-color .24s ease,color .24s ease;
}
.btn-primary{
  color:#04121a;
  background:linear-gradient(135deg,var(--cyan),#79eeb6 55%,#a8f37a);
  box-shadow:0 14px 32px rgba(46,230,200,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 42px rgba(46,230,200,.4);color:#04121a;}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 20px rgba(46,230,200,.28);}
.btn-ghost{
  color:var(--text);background:rgba(255,255,255,.04);border-color:var(--line-strong);
}
.btn-ghost:hover{transform:translateY(-2px);background:rgba(255,255,255,.09);border-color:rgba(46,230,200,.5);color:#fff;}
.btn-sm{padding:9px 18px;font-size:13.5px;border-radius:10px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:11px;
  border:1px solid var(--line-strong);background:rgba(255,255,255,.05);
  cursor:pointer;padding:0;place-items:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#dbe3ff;transition:transform .25s ease,opacity .25s ease;}
.nav-toggle span+span{margin-top:4px;}

/* ---------- hero ---------- */
.hero{padding:clamp(44px,6vw,84px) 0 clamp(36px,4.5vw,60px);}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(24px,3.4vw,52px);align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;font-weight:700;letter-spacing:.14em;color:#9df6e2;
  padding:7px 14px;border-radius:999px;
  border:1px solid rgba(46,230,200,.3);background:rgba(46,230,200,.08);
  margin-bottom:20px;
}
.hero-title{
  font-size:clamp(29px,4.4vw,50px);
  line-height:1.18;
  background:linear-gradient(120deg,#ffffff 8%,#b9fff0 46%,#b7a4ff 92%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:18px;
}
.hero-sub{color:#b9c3de;font-size:clamp(15px,1.4vw,17px);max-width:38em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-note{margin-top:18px;font-size:13.5px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px 18px;}
.hero-note i{color:var(--cyan);margin-right:6px;}

.hero-panel{
  background:linear-gradient(160deg,var(--panel),#0a1024 72%);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);padding:clamp(20px,2.4vw,28px);
  position:relative;overflow:hidden;
}
.hero-panel::after{
  content:"";position:absolute;inset:auto -30% -55% auto;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(139,92,246,.4),transparent 68%);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;}
.panel-head h3{font-size:16px;}
.chip{
  font-size:11.5px;font-weight:700;letter-spacing:.1em;color:#0a1020;
  background:var(--amber);padding:4px 10px;border-radius:999px;white-space:nowrap;
}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;position:relative;z-index:2;}
.stat-card{
  background:rgba(255,255,255,.045);border:1px solid var(--line);
  border-radius:var(--radius);padding:14px 15px;
  transition:border-color .24s ease,background .24s ease,transform .24s ease;
}
.stat-card:hover{border-color:rgba(46,230,200,.45);background:rgba(46,230,200,.07);transform:translateY(-2px);}
.stat-card b{display:block;font-size:24px;color:#fff;letter-spacing:.01em;}
.stat-card b i{font-style:normal;font-size:13px;color:var(--cyan);margin-left:3px;}
.stat-card span{font-size:12.5px;color:var(--muted);}
.panel-foot{
  margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);
  font-size:13px;color:#a9b5d4;display:flex;align-items:center;gap:9px;position:relative;z-index:2;
}
.panel-foot i{color:var(--cyan);}

/* ---------- sections ---------- */
.section{padding:clamp(44px,5.4vw,76px) 0;}
.section-head{max-width:760px;margin-bottom:clamp(24px,3vw,40px);}
.section-tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.18em;
  color:var(--violet);margin-bottom:12px;text-transform:uppercase;
}
.section-title{font-size:clamp(23px,2.7vw,34px);margin-bottom:12px;}
.section-desc{color:var(--muted);font-size:15.5px;}
.section-alt{background:linear-gradient(180deg,rgba(255,255,255,.028),transparent 70%);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

/* schedule */
.schedule-list{display:grid;gap:12px;}
.schedule-row{
  display:grid;grid-template-columns:104px 1fr auto;gap:16px;align-items:center;
  padding:16px 18px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  transition:transform .22s ease,border-color .22s ease,background .22s ease;
}
.schedule-row:hover{transform:translateX(4px);border-color:rgba(46,230,200,.4);background:var(--panel-2);}
.schedule-ep{font-size:13px;font-weight:800;color:var(--cyan);letter-spacing:.06em;}
.schedule-body strong{display:block;font-size:15.5px;color:#fff;margin-bottom:3px;}
.schedule-body span{font-size:13px;color:var(--muted);}
.tag{
  font-size:12px;font-weight:700;padding:5px 12px;border-radius:999px;white-space:nowrap;
  border:1px solid transparent;
}
.tag-done{color:#0b2019;background:linear-gradient(135deg,var(--cyan),#8df3b8);}
.tag-soon{color:#2a1d00;background:linear-gradient(135deg,var(--amber),#ffdf95);}
.tag-plan{color:#cfc6ff;background:rgba(139,92,246,.18);border-color:rgba(139,92,246,.45);}

/* clue cards */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.card{
  background:linear-gradient(165deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:clamp(20px,2.2vw,28px);
  display:flex;flex-direction:column;gap:12px;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-6px);border-color:rgba(46,230,200,.4);box-shadow:var(--shadow-hover);}
.card-num{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  font-weight:900;font-size:15px;color:#0a1020;
  background:linear-gradient(135deg,var(--cyan),#9c8bff);
}
.card h3{font-size:18px;}
.card p{font-size:14.5px;color:#b4bedb;}
.card .meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:8px;}
.meta span{
  font-size:11.5px;color:#9fb0d6;padding:4px 10px;border-radius:8px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);counter-reset:step;}
.step{
  position:relative;padding:24px 20px 22px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  transition:border-color .24s ease,transform .24s ease;
}
.step:hover{border-color:rgba(139,92,246,.5);transform:translateY(-4px);}
.step::before{
  counter-increment:step;content:"0" counter(step);
  font-size:12px;font-weight:800;letter-spacing:.16em;color:var(--pink);display:block;margin-bottom:12px;
}
.step h3{font-size:16px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--muted);}

/* voices */
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.voice{
  background:rgba(255,255,255,.035);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;transition:background .24s ease,border-color .24s ease;
}
.voice:hover{background:rgba(46,230,200,.06);border-color:rgba(46,230,200,.36);}
.voice p{font-size:14.5px;color:#c3cce6;margin-bottom:16px;}
.voice-user{display:flex;align-items:center;gap:11px;}
.avatar{
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;
  font-size:13px;font-weight:800;color:#0a1020;
  background:linear-gradient(135deg,#9df6e2,#a99bff);
}
.voice-user b{display:block;font-size:13.5px;color:#fff;}
.voice-user span{font-size:12px;color:var(--muted);}
.stars{color:var(--amber);font-size:12px;letter-spacing:2px;margin-bottom:12px;}

/* faq */
.faq{display:grid;gap:12px;max-width:900px;}
.faq-item{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:border-color .24s ease;
}
.faq-item:hover{border-color:rgba(46,230,200,.35);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:none;border:0;cursor:pointer;text-align:left;
  color:#fff;font-size:15.5px;font-weight:700;
}
.faq-q i{color:var(--cyan);transition:transform .25s ease;font-size:13px;}
.faq-item.is-open .faq-q i{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .32s ease;
  font-size:14.5px;color:#aeb9d8;
}
.faq-a p{padding:0 20px 18px;}

/* cta */
.cta-band{
  margin:clamp(36px,4vw,60px) 0;
  border-radius:26px;
  padding:clamp(28px,4vw,54px);
  background:
    radial-gradient(600px 240px at 8% 10%, rgba(46,230,200,.22), transparent 62%),
    radial-gradient(520px 260px at 92% 90%, rgba(139,92,246,.28), transparent 66%),
    #0c1226;
  border:1px solid rgba(46,230,200,.26);
  display:grid;grid-template-columns:1.3fr .7fr;gap:28px;align-items:center;
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:12px;}
.cta-band p{color:#b6c1de;font-size:15px;max-width:34em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}

/* footer */
.site-footer{border-top:1px solid var(--line);background:#060912;padding:clamp(40px,5vw,64px) 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:clamp(24px,3.4vw,48px);}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.footer-desc{font-size:14px;color:var(--muted);max-width:34em;}
.footer-col h4{font-size:14px;letter-spacing:.1em;color:#dfe6ff;margin-bottom:14px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:#9dabcc;}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{
  margin-top:clamp(28px,3.4vw,44px);padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:#7c89ab;
}
.footer-bottom .tech{color:#5f6b8c;}

/* responsive */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;}
  .hero-panel{max-width:560px;}
  .card-grid,.voice-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .cta-band{grid-template-columns:1fr;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-brand-col{grid-column:1 / -1;}
}
@media (max-width:860px){
  .nav{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:14px clamp(16px,3.2vw,32px) 20px;
    background:rgba(8,12,24,.98);
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 44px rgba(0,0,0,.5);
    display:none;
  }
  .nav.is-open{display:flex;}
  .nav-link{padding:12px 14px;font-size:15px;}
  .nav-toggle{display:grid;}
  .header-actions{margin-left:auto;}
  .live-badge{display:none;}
}
@media (max-width:640px){
  .header-inner{min-height:66px;}
  .brand-text strong{font-size:14.5px;}
  .brand-text em{font-size:10px;letter-spacing:.1em;}
  .brand-mark{width:38px;height:38px;font-size:18px;border-radius:11px;}
  .hero-actions .btn{flex:1 1 100%;}
  .card-grid,.voice-grid,.steps{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:1fr 1fr;}
  .schedule-row{grid-template-columns:1fr;gap:8px;align-items:flex-start;}
  .schedule-row .tag{justify-self:flex-start;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:420px){
  .stat-grid{grid-template-columns:1fr;}
  .hero-title{font-size:26px;}
}