/* roulang page: index */
:root{
  --ink:#05131e;
  --ink-2:#0a2132;
  --panel:#0e2a3b;
  --panel-2:#123547;
  --line:rgba(122,190,214,.16);
  --line-strong:rgba(122,190,214,.36);
  --text:#e9f5fb;
  --muted:#93b4c6;
  --accent:#37e3d0;
  --accent-dark:#17b3a4;
  --gold:#f4b942;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 10px 28px rgba(0,0,0,.35);
  --shadow-hover:0 18px 44px rgba(0,0,0,.52);
  --maxw:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink);
  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;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,19,30,.86);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 30px rgba(0,0,0,.5);background:rgba(5,19,30,.96)}
.header-inner{
  max-width:var(--maxw);margin:0 auto;padding:0 24px;
  height:64px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;
}
.brand{
  justify-self:center;
  font-size:17px;font-weight:700;letter-spacing:.02em;
  display:inline-flex;align-items:center;gap:9px;white-space:nowrap;
  color:#f2fbff;
}
.brand-dot{
  width:9px;height:9px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 4px rgba(55,227,208,.16);
}
.brand small{color:var(--accent);font-weight:600}
.nav{display:flex;align-items:center;gap:6px}
.nav-left{justify-self:start}
.nav-right{justify-self:end}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:9px;
  font-size:14.5px;color:var(--muted);font-weight:500;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(122,190,214,.1)}
.nav-link.is-active{color:#05131e;background:var(--accent);font-weight:700}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 18px;margin-left:6px;border-radius:9px;
  background:linear-gradient(135deg,var(--gold),#e09b1f);
  color:#241703;font-weight:700;font-size:14px;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
  box-shadow:0 6px 18px rgba(244,185,66,.24);
}
.nav-cta:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 10px 24px rgba(244,185,66,.34)}
.nav-toggle{
  display:none;justify-self:end;
  height:40px;min-width:44px;padding:0 12px;border-radius:9px;
  border:1px solid var(--line-strong);background:rgba(122,190,214,.08);color:var(--text);
  font-size:14px;font-weight:600;
}
.mobile-nav{
  display:none;flex-direction:column;gap:4px;
  padding:10px 20px 18px;border-top:1px solid var(--line);
  background:rgba(5,19,30,.98);
}
.mobile-nav.is-open{display:flex}
.mobile-nav .nav-link{height:44px;width:100%;justify-content:flex-start;font-size:15px}
.mobile-nav .nav-cta{height:44px;margin:8px 0 0;width:100%}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:10px;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-dark));
  color:#03181a;box-shadow:0 10px 26px rgba(55,227,208,.26);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(55,227,208,.34);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:rgba(233,245,251,.04);color:var(--text);border-color:var(--line-strong);
}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--accent);color:var(--accent);background:rgba(55,227,208,.08)}
.btn-sm{min-height:38px;padding:0 16px;font-size:13.5px;border-radius:8px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);scroll-margin-top:80px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.04)}
.hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(5,19,30,.96) 0%,rgba(5,19,30,.86) 42%,rgba(5,19,30,.55) 100%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:center;
  padding:72px 0 80px;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  border:1px solid rgba(55,227,208,.36);
  background:rgba(55,227,208,.1);
  color:var(--accent);font-size:13px;font-weight:600;margin-bottom:22px;
}
.hero h1{
  font-size:clamp(30px,4.1vw,44px);
  line-height:1.28;font-weight:800;letter-spacing:-.01em;
  margin-bottom:20px;
  text-wrap:balance;
}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero-sub{
  color:#b6d2e0;font-size:15.5px;line-height:1.85;max-width:640px;
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 13px;border-radius:999px;
  background:rgba(122,190,214,.1);border:1px solid var(--line);
  color:#b9d6e4;font-size:13px;
}
.tag--gold{color:var(--gold);border-color:rgba(244,185,66,.32);background:rgba(244,185,66,.1)}
.hero-stage{position:relative}
.stage-frame{
  position:relative;border-radius:18px;overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:0 26px 64px rgba(0,0,0,.58);
}
.stage-frame img{width:100%;height:330px;object-fit:cover}
.stage-play{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(circle at center,rgba(5,19,30,.12),rgba(5,19,30,.6));
  transition:background .25s ease;
}
.stage-play:hover{background:radial-gradient(circle at center,rgba(5,19,30,.02),rgba(5,19,30,.5))}
.stage-play svg{width:66px;height:66px;transition:transform .25s ease;filter:drop-shadow(0 8px 22px rgba(0,0,0,.55))}
.stage-play:hover svg{transform:scale(1.09)}
.stage-caption{
  position:absolute;left:16px;bottom:14px;
  padding:6px 14px;border-radius:999px;
  background:rgba(5,19,30,.74);border:1px solid var(--line);
  font-size:12.5px;color:#d8eef7;
}

/* ---------- sections ---------- */
.section{padding:74px 0;position:relative;scroll-margin-top:80px}
.section--alt{background:var(--ink-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:740px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;font-weight:700;letter-spacing:.16em;
  color:var(--accent);margin-bottom:12px;text-transform:uppercase;
}
.eyebrow::before{content:"";width:24px;height:2px;border-radius:2px;background:var(--accent)}
.section-head h2{
  font-size:clamp(23px,2.8vw,31px);line-height:1.36;font-weight:800;
  margin-bottom:14px;letter-spacing:-.005em;
}
.section-desc{color:var(--muted);font-size:15px;line-height:1.8}

/* ---------- search ---------- */
.search-panel{
  border:1px solid var(--line);border-radius:20px;
  background:linear-gradient(140deg,rgba(18,53,71,.92),rgba(10,33,50,.92));
  padding:34px 36px;box-shadow:var(--shadow);
  display:grid;grid-template-columns:1fr 1.2fr;gap:32px;align-items:center;
}
.search-panel h2{font-size:22px;font-weight:800;margin-bottom:10px}
.search-panel p{color:var(--muted);font-size:14.5px}
.search-box{display:flex;gap:10px;margin-bottom:14px}
.search-box input{
  flex:1;min-width:0;height:48px;padding:0 16px;border-radius:10px;
  border:1px solid var(--line-strong);background:rgba(5,19,30,.6);
  color:var(--text);font-size:14.5px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box input::placeholder{color:#6f93a6}
.search-box input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(55,227,208,.16)}
.search-hot{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--muted)}
.search-hot a{
  padding:4px 11px;border-radius:999px;border:1px solid var(--line);
  background:rgba(122,190,214,.08);color:#b9d6e4;transition:all .2s ease;
}
.search-hot a:hover{color:var(--accent);border-color:var(--accent);background:rgba(55,227,208,.1)}

/* ---------- channel matrix ---------- */
.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.channel-card{
  position:relative;display:flex;flex-direction:column;gap:12px;
  padding:30px 26px 26px;border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(170deg,rgba(18,53,71,.9),rgba(10,33,50,.9));
  box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  overflow:hidden;
}
.channel-card::after{
  content:"";position:absolute;right:-40px;top:-40px;width:130px;height:130px;border-radius:50%;
  background:radial-gradient(circle,rgba(55,227,208,.16),transparent 70%);
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.channel-icon{
  width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(55,227,208,.12);border:1px solid rgba(55,227,208,.28);color:var(--accent);
}
.channel-card h3{font-size:18px;font-weight:700}
.channel-card p{color:var(--muted);font-size:14px;line-height:1.8}
.channel-more{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-size:13.5px;font-weight:600;margin-top:4px}
.channel-card:hover .channel-more{gap:10px}
.channel-more{transition:gap .2s ease}

/* ---------- featured cards ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{
  display:flex;flex-direction:column;
  border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);background:var(--panel);
  box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.feature-thumb{position:relative;overflow:hidden}
.feature-thumb img{width:100%;height:176px;object-fit:cover;transition:transform .4s ease}
.feature-card:hover .feature-thumb img{transform:scale(1.05)}
.feature-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.feature-body h3{font-size:16.5px;font-weight:700;line-height:1.5}
.feature-body p{color:var(--muted);font-size:13.8px;line-height:1.8}
.feature-meta{display:flex;gap:8px;margin-top:auto;padding-top:6px;flex-wrap:wrap}
.chip{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
  font-size:12px;color:#a9c8d8;background:rgba(122,190,214,.1);border:1px solid var(--line);
}
.chip--accent{color:var(--accent);border-color:rgba(55,227,208,.3);background:rgba(55,227,208,.1)}

/* ---------- cms list ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-card{
  display:flex;flex-direction:column;gap:12px;
  padding:24px;border-radius:var(--radius);
  border:1px solid var(--line);background:rgba(18,53,71,.62);
  box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong);background:rgba(18,53,71,.9)}
.news-card h3{font-size:15.5px;font-weight:700;line-height:1.6}
.news-card p{color:var(--muted);font-size:13.5px;line-height:1.8}
.news-meta{display:flex;justify-content:space-between;gap:10px;font-size:12.5px;color:#7fa1b4;margin-top:auto;padding-top:8px;border-top:1px dashed rgba(122,190,214,.18)}
.empty-tip{
  padding:34px;border-radius:var(--radius);border:1px dashed var(--line-strong);
  color:var(--muted);text-align:center;font-size:14.5px;background:rgba(18,53,71,.35);
}

/* ---------- rank ---------- */
.rank-wrap{display:grid;grid-template-columns:1.35fr .65fr;gap:28px;align-items:start}
.rank-list{display:flex;flex-direction:column;gap:12px}
.rank-item{
  display:flex;align-items:center;gap:18px;
  padding:18px 22px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:rgba(18,53,71,.55);
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.rank-item:hover{transform:translateX(4px);border-color:var(--line-strong);background:rgba(18,53,71,.9)}
.rank-no{
  flex:0 0 38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;color:var(--accent);
  background:rgba(55,227,208,.12);border:1px solid rgba(55,227,208,.26);
}
.rank-item:nth-child(1) .rank-no{color:#241703;background:linear-gradient(135deg,var(--gold),#e09b1f);border-color:transparent}
.rank-body{flex:1;min-width:0}
.rank-body h3{font-size:15.5px;font-weight:700;margin-bottom:4px}
.rank-body p{color:var(--muted);font-size:13.3px}
.rank-side{
  padding:26px;border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(55,227,208,.1),rgba(18,53,71,.7));
}
.rank-side h3{font-size:17px;font-weight:700;margin-bottom:12px}
.rank-side p{color:var(--muted);font-size:13.8px;line-height:1.85;margin-bottom:18px}

/* ---------- resources ---------- */
.resource-band{
  position:relative;overflow:hidden;border-radius:20px;
  border:1px solid var(--line-strong);box-shadow:var(--shadow);
  padding:46px 42px;
}
.resource-band .band-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.resource-band .band-veil{position:absolute;inset:0;background:linear-gradient(100deg,rgba(5,19,30,.96),rgba(5,19,30,.72))}
.resource-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}
.resource-inner h2{font-size:26px;font-weight:800;margin-bottom:14px;line-height:1.4}
.resource-inner p{color:#b6d2e0;font-size:14.8px;line-height:1.85}
.resource-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.resource-item{
  display:flex;align-items:center;gap:10px;
  padding:14px 16px;border-radius:10px;
  border:1px solid var(--line);background:rgba(5,19,30,.5);
  font-size:13.6px;color:#cfe6f1;
  transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.resource-item:hover{border-color:var(--accent);background:rgba(55,227,208,.1);transform:translateY(-2px)}
.resource-item svg{flex:0 0 18px;color:var(--accent)}

/* ---------- stats ---------- */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{
  padding:26px 22px;border-radius:var(--radius);
  border:1px solid var(--line);background:rgba(18,53,71,.55);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.stat-card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.stat-card .stat-label{font-size:13px;color:var(--muted);margin-bottom:8px}
.stat-card .stat-value{font-size:23px;font-weight:800;color:var(--accent);line-height:1.3}
.stat-card .stat-note{font-size:13px;color:#8fb0c2;margin-top:8px}

/* ---------- steps ---------- */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step}
.step-card{
  position:relative;padding:30px 26px 26px;border-radius:var(--radius);
  border:1px solid var(--line);background:rgba(18,53,71,.5);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.step-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:11px;margin-bottom:16px;
  font-weight:800;font-size:15px;color:#241703;
  background:linear-gradient(135deg,var(--gold),#e09b1f);
}
.step-card h3{font-size:17px;font-weight:700;margin-bottom:10px}
.step-card p{color:var(--muted);font-size:14px;line-height:1.8}

/* ---------- scene ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.scene-card{
  display:grid;grid-template-columns:150px 1fr;gap:20px;align-items:center;
  padding:18px;border-radius:var(--radius);
  border:1px solid var(--line);background:rgba(18,53,71,.5);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.scene-card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.scene-card img{width:100%;height:112px;object-fit:cover;border-radius:10px}
.scene-card h3{font-size:16px;font-weight:700;margin-bottom:8px}
.scene-card p{color:var(--muted);font-size:13.6px;line-height:1.8}

/* ---------- reviews ---------- */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review-card{
  padding:26px;border-radius:var(--radius);
  border:1px solid var(--line);background:rgba(18,53,71,.55);
  display:flex;flex-direction:column;gap:14px;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.review-card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.review-card p{color:#c6dce8;font-size:14px;line-height:1.85}
.review-user{display:flex;align-items:center;gap:10px;margin-top:auto}
.avatar{
  width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(55,227,208,.14);color:var(--accent);font-weight:700;font-size:14px;
  border:1px solid rgba(55,227,208,.28);
}
.review-user span{font-size:13px;color:var(--muted)}

/* ---------- info layout ---------- */
.info-layout{display:grid;grid-template-columns:1.4fr .6fr;gap:28px;align-items:start}
.info-list{display:flex;flex-direction:column;gap:14px}
.info-item{
  display:block;padding:20px 24px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:rgba(18,53,71,.55);
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.info-item:hover{transform:translateY(-2px);border-color:var(--line-strong);background:rgba(18,53,71,.9)}
.info-item h3{font-size:15.5px;font-weight:700;margin-bottom:6px}
.info-item p{color:var(--muted);font-size:13.5px;line-height:1.8;margin-bottom:8px}
.info-item .news-meta{border-top:none;padding-top:0}
.info-side{
  padding:26px;border-radius:var(--radius);
  border:1px solid var(--line);background:rgba(10,33,50,.8);
}
.info-side h3{font-size:16.5px;font-weight:700;margin-bottom:16px}
.side-item{display:flex;gap:10px;padding:12px 0;border-bottom:1px dashed rgba(122,190,214,.16);font-size:13.6px;color:#bcd6e3}
.side-item:last-child{border-bottom:none;padding-bottom:0}
.side-dot{flex:0 0 6px;height:6px;border-radius:50%;background:var(--accent);margin-top:9px}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:rgba(18,53,71,.5);overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item[open]{border-color:rgba(55,227,208,.36);background:rgba(18,53,71,.85)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;
  font-size:15.5px;font-weight:600;display:flex;justify-content:space-between;gap:16px;align-items:center;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:20px;color:var(--accent);font-weight:700;line-height:1;transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"–"}
.faq-item p{padding:0 24px 22px;color:var(--muted);font-size:14px;line-height:1.85}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;
  border:1px solid rgba(55,227,208,.3);
  box-shadow:0 24px 60px rgba(0,0,0,.5);
  padding:56px 44px;text-align:center;
}
.cta-band .band-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.cta-band .band-veil{position:absolute;inset:0;background:linear-gradient(160deg,rgba(5,19,30,.94),rgba(10,33,50,.82))}
.cta-inner{position:relative;z-index:2;max-width:720px;margin:0 auto}
.cta-inner h2{font-size:clamp(24px,3vw,32px);font-weight:800;margin-bottom:16px;line-height:1.36}
.cta-inner p{color:#b6d2e0;font-size:14.8px;line-height:1.85;margin-bottom:28px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:#04101a;border-top:1px solid var(--line);padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;padding-bottom:40px}
.footer-logo{font-size:17px;font-weight:800;color:#f2fbff;display:inline-flex;align-items:center;gap:9px;margin-bottom:14px}
.footer-brand p{color:var(--muted);font-size:13.8px;line-height:1.85;max-width:360px}
.footer-col h3{font-size:14.5px;font-weight:700;color:#dceef7;margin-bottom:16px;letter-spacing:.02em}
.footer-col li+li{margin-top:10px}
.footer-col a{color:var(--muted);font-size:13.8px;transition:color .2s ease}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding-top:22px;padding-bottom:26px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  color:#6f93a6;font-size:12.8px;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:38px;padding:56px 0 62px}
  .stage-frame img{height:280px}
  .channel-grid,.feature-grid,.news-grid,.review-grid,.steps-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .rank-wrap,.info-layout,.resource-inner{grid-template-columns:1fr}
  .search-panel{grid-template-columns:1fr;gap:22px;padding:28px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .header-inner{grid-template-columns:1fr auto;gap:12px}
  .nav-left,.nav-right{display:none}
  .brand{justify-self:start}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .container{padding:0 18px}
  .header-inner{padding:0 18px}
  .channel-grid,.feature-grid,.news-grid,.review-grid,.steps-grid,.scene-grid{grid-template-columns:1fr}
  .resource-band,.cta-band{padding:34px 22px}
  .resource-list{grid-template-columns:1fr}
  .scene-card{grid-template-columns:1fr}
  .scene-card img{height:150px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .hero-sub{font-size:15px}
  .rank-item{padding:16px}
}
@media (max-width:520px){
  .hero h1{font-size:26px}
  .hero-actions .btn{width:100%}
  .search-box{flex-direction:column}
  .search-box input{height:44px}
  .search-box .btn{width:100%}
  .stats-grid{grid-template-columns:1fr}
  .cta-actions .btn{width:100%}
  .faq-item summary{font-size:14.5px;padding:16px 18px}
  .faq-item p{padding:0 18px 18px}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: article */
:root{
 --ink:#05131e;
 --ink-2:#0a2132;
 --panel:#0e2a3b;
 --panel-2:#123547;
 --line:rgba(122,190,214,.16);
 --line-strong:rgba(122,190,214,.36);
 --text:#e9f5fb;
 --muted:#93b4c6;
 --accent:#37e3d0;
 --accent-dark:#17b3a4;
 --gold:#f4b942;
 --radius:14px;
 --radius-sm:10px;
 --shadow:0 10px 28px rgba(0,0,0,.35);
 --shadow-hover:0 18px 44px rgba(0,0,0,.52);
 --maxw:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 background:var(--ink);
 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;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,textarea,select{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(5,19,30,.86);
 backdrop-filter:blur(16px);
 -webkit-backdrop-filter:blur(16px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 30px rgba(0,0,0,.5);background:rgba(5,19,30,.96)}
.header-inner{
 max-width:var(--maxw);margin:0 auto;padding:0 24px;
 height:64px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;
}
.brand{
 justify-self:center;
 font-size:17px;font-weight:700;letter-spacing:.02em;
 display:inline-flex;align-items:center;gap:9px;white-space:nowrap;
 color:#f2fbff;
}
.brand-dot{
 width:9px;height:9px;border-radius:50%;
 background:var(--accent);box-shadow:0 0 0 4px rgba(55,227,208,.16);
}
.nav{display:flex;align-items:center;gap:6px}
.nav-left{justify-self:start}
.nav-right{justify-self:end}
.nav-link{
 display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:9px;
 font-size:14.5px;color:var(--muted);font-weight:500;
 transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(122,190,214,.1)}
.nav-link.is-active{color:#05131e;background:var(--accent);font-weight:700}
.nav-cta{
 display:inline-flex;align-items:center;justify-content:center;
 height:38px;padding:0 18px;margin-left:6px;border-radius:9px;
 background:linear-gradient(135deg,var(--gold),#e09b1f);
 color:#241703;font-weight:700;font-size:14px;white-space:nowrap;
 transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
 box-shadow:0 6px 18px rgba(244,185,66,.24);
}
.nav-cta:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 10px 24px rgba(244,185,66,.34)}
.nav-toggle{
 display:none;justify-self:end;
 height:40px;min-width:44px;padding:0 14px;border-radius:9px;
 border:1px solid var(--line-strong);background:rgba(122,190,214,.08);color:var(--text);
 font-size:14px;font-weight:600;
}
.nav-toggle:hover{background:rgba(122,190,214,.16)}
.mobile-nav{
 display:none;flex-direction:column;gap:4px;
 padding:10px 20px 18px;border-top:1px solid var(--line);
 background:rgba(5,19,30,.98);
}
.mobile-nav.is-open{display:flex}
.mobile-nav .nav-link{height:44px;width:100%;justify-content:flex-start;font-size:15px}
.mobile-nav .nav-cta{height:44px;margin:8px 0 0;width:100%}

/* ---------- buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 min-height:46px;padding:0 24px;border-radius:10px;
 font-size:15px;font-weight:700;letter-spacing:.01em;
 border:1px solid transparent;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{
 background:linear-gradient(135deg,var(--accent),var(--accent-dark));
 color:#03181a;box-shadow:0 10px 26px rgba(55,227,208,.26);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(55,227,208,.34);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
 background:rgba(233,245,251,.04);color:var(--text);border-color:var(--line-strong);
}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--accent);color:var(--accent);background:rgba(55,227,208,.08)}
.btn-sm{min-height:38px;padding:0 16px;font-size:13.5px;border-radius:8px}

/* ---------- page head ---------- */
.page-head{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-head-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.05)}
.page-head-veil{
 position:absolute;inset:0;
 background:linear-gradient(118deg,rgba(5,19,30,.97) 0%,rgba(5,19,30,.9) 46%,rgba(5,19,30,.62) 100%);
}
.page-head-inner{position:relative;z-index:2;padding:46px 0 56px;max-width:900px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin:0 0 18px}
.crumbs a{transition:color .2s ease}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{color:rgba(147,180,198,.45)}
.crumbs .current{color:#c8e0ec}
.page-head h1{
 font-size:clamp(25px,3.4vw,40px);
 line-height:1.34;font-weight:800;letter-spacing:-.01em;
 margin:0 0 18px;text-wrap:balance;
}
.meta-pills{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.meta-pill{
 display:inline-flex;align-items:center;gap:7px;
 padding:5px 13px;border-radius:999px;
 border:1px solid var(--line);background:rgba(122,190,214,.08);
 font-size:12.5px;color:#b9d6e4;
}
.meta-pill--accent{color:var(--accent);border-color:rgba(55,227,208,.34);background:rgba(55,227,208,.1);font-weight:600}
.meta-pill--gold{color:var(--gold);border-color:rgba(244,185,66,.3);background:rgba(244,185,66,.09)}
.head-lead{
 margin:0;color:#b6d2e0;font-size:15.5px;line-height:1.85;max-width:700px;
}
.head-lead strong{color:var(--accent);font-weight:700}

/* ---------- article layout ---------- */
.article-wrap{
 display:grid;grid-template-columns:minmax(0,1fr) 322px;gap:34px;align-items:start;
 padding:52px 0 76px;
}
.article-card{
 background:linear-gradient(180deg,rgba(18,53,71,.62),rgba(10,33,50,.55));
 border:1px solid var(--line);border-radius:var(--radius);
 padding:30px 32px;box-shadow:var(--shadow);
}
.article-card + .article-card{margin-top:24px}
.article-tools{
 display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
 padding-bottom:20px;margin-bottom:24px;border-bottom:1px dashed var(--line-strong);
}
.article-tools .label{
 display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--accent);font-weight:600;letter-spacing:.06em;
}
.article-tools .label::before{content:"";width:20px;height:2px;background:var(--accent);border-radius:2px}
.article-tools .tags{display:flex;flex-wrap:wrap;gap:8px}
.mini-tag{
 display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;
 font-size:12px;color:#a9c8d8;border:1px solid var(--line);background:rgba(122,190,214,.07);
}

/* ---------- prose ---------- */
.prose{font-size:16px;line-height:1.85;color:#d6e9f2;word-break:break-word}
.prose > *:first-child{margin-top:0}
.prose > *:last-child{margin-bottom:0}
.prose p{margin:0 0 18px}
.prose h2{
 font-size:22px;line-height:1.45;font-weight:800;color:#f2fbff;
 margin:36px 0 16px;padding-left:14px;border-left:3px solid var(--accent);
}
.prose h3{font-size:18px;line-height:1.5;font-weight:700;color:#eaf7fd;margin:28px 0 12px}
.prose h4{font-size:16px;font-weight:700;color:var(--accent);margin:22px 0 10px}
.prose ul,.prose ol{margin:0 0 18px;padding-left:22px}
.prose li{margin-bottom:8px}
.prose li::marker{color:var(--accent)}
.prose strong{color:var(--gold);font-weight:700}
.prose em{color:#9fe9e0;font-style:normal}
.prose a{color:var(--accent);border-bottom:1px solid rgba(55,227,208,.4);transition:color .2s ease,border-color .2s ease}
.prose a:hover{color:#8ff5e9;border-color:#8ff5e9}
.prose img{border-radius:var(--radius-sm);border:1px solid var(--line);margin:22px 0;box-shadow:var(--shadow)}
.prose blockquote{
 margin:22px 0;padding:15px 20px;border-left:3px solid var(--gold);
 background:rgba(244,185,66,.07);border-radius:0 10px 10px 0;color:#d3e6f0;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose table{width:100%;border-collapse:collapse;margin:22px 0;font-size:14.5px}
.prose th,.prose td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.prose th{background:rgba(122,190,214,.1);color:#eaf7fd;font-weight:700}
.prose tr:hover td{background:rgba(122,190,214,.05)}
.prose hr{border:0;border-top:1px solid var(--line-strong);margin:28px 0}
.prose code{background:rgba(122,190,214,.14);padding:2px 7px;border-radius:6px;font-size:14px;color:#9fe9e0}

/* ---------- empty state ---------- */
.empty-state{text-align:center;padding:40px 20px}
.empty-state h2{font-size:20px;margin:0 0 12px;color:#f2fbff;font-weight:700;border:0;padding:0}
.empty-state p{color:var(--muted);margin:0 0 22px}

/* ---------- aside ---------- */
.article-aside{position:sticky;top:84px;display:flex;flex-direction:column;gap:20px}
.side-card{
 background:rgba(14,42,59,.78);
 border:1px solid var(--line);border-radius:var(--radius);
 padding:22px;box-shadow:var(--shadow);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.side-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.side-card h3{
 display:flex;align-items:center;gap:9px;
 font-size:15px;font-weight:700;color:#f2fbff;
 margin:0 0 16px;padding-bottom:12px;border-bottom:1px solid var(--line);
}
.side-card h3 .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(55,227,208,.14)}
.side-list{list-style:none;margin:0;padding:0}
.side-list li{
 position:relative;padding-left:18px;margin-bottom:12px;
 font-size:14px;color:#b7d3e1;line-height:1.7;
}
.side-list li:last-child{margin-bottom:0}
.side-list li::before{
 content:"";position:absolute;left:0;top:9px;
 width:7px;height:7px;border-radius:2px;background:var(--accent);transform:rotate(45deg);
}
.side-kv{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px dashed var(--line)}
.side-kv:last-child{border-bottom:0;padding-bottom:0}
.side-kv span{font-size:13.5px;color:var(--muted)}
.side-kv strong{font-size:14px;color:var(--accent);font-weight:700}
.side-cta{
 display:block;text-align:center;
 background:linear-gradient(135deg,rgba(55,227,208,.16),rgba(23,179,164,.1));
 border:1px solid rgba(55,227,208,.34);border-radius:var(--radius);
 padding:22px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.side-cta:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(0,0,0,.42);border-color:var(--accent)}
.side-cta strong{display:block;font-size:16px;color:#f2fbff;margin-bottom:8px}
.side-cta span{display:block;font-size:13px;color:var(--muted);margin-bottom:16px;line-height:1.7}
.side-cta .ui-btn{
 display:inline-flex;align-items:center;justify-content:center;
 min-height:40px;padding:0 20px;border-radius:8px;
 background:linear-gradient(135deg,var(--accent),var(--accent-dark));
 color:#03181a;font-size:14px;font-weight:700;
}

/* ---------- sections ---------- */
.section{padding:66px 0;border-top:1px solid var(--line);scroll-margin-top:80px}
.section--alt{background:var(--ink-2)}
.section-head{max-width:720px;margin-bottom:34px}
.section-kicker{
 display:inline-flex;align-items:center;gap:9px;
 font-size:12.5px;font-weight:700;letter-spacing:.12em;color:var(--accent);
 margin-bottom:14px;
}
.section-kicker::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.section-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.36;font-weight:800;margin:0 0 12px;color:#f4fbff}
.section-head p{margin:0;color:var(--muted);font-size:15px;line-height:1.8}

.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}

.card{
 background:linear-gradient(180deg,rgba(18,53,71,.6),rgba(14,42,59,.5));
 border:1px solid var(--line);border-radius:var(--radius);
 padding:24px;box-shadow:var(--shadow);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.card-icon{
 width:44px;height:44px;border-radius:12px;
 display:flex;align-items:center;justify-content:center;
 background:rgba(55,227,208,.12);border:1px solid rgba(55,227,208,.28);
 margin-bottom:16px;
}
.card-icon svg{width:22px;height:22px;stroke:var(--accent);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:17px;font-weight:700;color:#f2fbff;margin:0 0 10px;line-height:1.5}
.card p{margin:0;font-size:14.5px;color:#a9c6d6;line-height:1.8}

/* ---------- stats ---------- */
.stat-strip{
 display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
 border:1px solid var(--line);border-radius:var(--radius);
 background:linear-gradient(160deg,rgba(18,53,71,.7),rgba(10,33,50,.7));
 overflow:hidden;box-shadow:var(--shadow);
}
.stat-item{padding:26px 22px;border-right:1px solid var(--line);transition:background .22s ease}
.stat-item:last-child{border-right:0}
.stat-item:hover{background:rgba(55,227,208,.06)}
.stat-item .num{font-size:28px;font-weight:800;color:var(--accent);line-height:1.2;letter-spacing:-.01em}
.stat-item .num small{font-size:14px;font-weight:700;margin-left:3px;color:var(--gold)}
.stat-item .txt{font-size:13.5px;color:var(--muted);margin-top:8px;line-height:1.65}

/* ---------- related ---------- */
.rel-card{display:flex;flex-direction:column;overflow:hidden;padding:0}
.rel-card .thumb{position:relative;aspect-ratio:16/10;overflow:hidden}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.rel-card:hover .thumb img{transform:scale(1.05)}
.rel-card .thumb::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(180deg,rgba(5,19,30,0) 40%,rgba(5,19,30,.75) 100%);
}
.rel-card .body{padding:18px 20px 22px}
.rel-card .body h3{font-size:15.5px;margin:0 0 8px;color:#f2fbff;font-weight:700;line-height:1.55}
.rel-card .body p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.75}
.rel-card .more{
 display:inline-flex;align-items:center;gap:6px;
 margin-top:14px;font-size:13px;color:var(--accent);font-weight:600;
}
.rel-card .more::after{content:"→";transition:transform .22s ease}
.rel-card:hover .more::after{transform:translateX(4px)}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:880px}
.faq-item{
 border:1px solid var(--line);border-radius:var(--radius);
 background:rgba(14,42,59,.62);overflow:hidden;
 transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.faq-item:hover{border-color:var(--line-strong);box-shadow:var(--shadow)}
.faq-item[open]{border-color:rgba(55,227,208,.4);box-shadow:0 14px 34px rgba(0,0,0,.42)}
.faq-item summary{
 list-style:none;cursor:pointer;
 display:flex;align-items:center;justify-content:space-between;gap:14px;
 padding:18px 22px;font-size:15.5px;font-weight:700;color:#eef8fd;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";
 flex:0 0 auto;
 width:26px;height:26px;line-height:24px;text-align:center;
 border-radius:8px;border:1px solid var(--line-strong);
 color:var(--accent);font-size:16px;font-weight:600;
 transition:transform .25s ease,background .25s ease;
}
.faq-item[open] summary::after{content:"−";background:rgba(55,227,208,.14);transform:rotate(180deg)}
.faq-item .faq-body{padding:0 22px 20px;color:#a9c6d6;font-size:14.5px;line-height:1.85}
.faq-item .faq-body p{margin:0}

/* ---------- cta band ---------- */
.cta-band{position:relative;overflow:hidden;border-top:1px solid var(--line)}
.cta-band-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.cta-band-veil{position:absolute;inset:0;background:linear-gradient(115deg,rgba(5,19,30,.96),rgba(5,19,30,.82) 60%,rgba(10,33,50,.7))}
.cta-band-inner{
 position:relative;z-index:2;
 display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center;
 padding:60px 0;
}
.cta-band h2{font-size:clamp(22px,2.7vw,30px);line-height:1.38;font-weight:800;margin:0 0 14px;color:#f6fcff}
.cta-band p{margin:0 0 24px;color:#b6d2e0;font-size:15px;line-height:1.85;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-panel{
 border:1px solid rgba(55,227,208,.3);border-radius:var(--radius);
 background:rgba(10,33,50,.65);padding:24px;box-shadow:var(--shadow);
}
.cta-panel h3{font-size:15px;font-weight:700;color:var(--accent);margin:0 0 14px}
.cta-panel .side-kv strong{color:#f2fbff}
.cta-panel .side-kv span{color:var(--muted)}

/* ---------- footer ---------- */
.site-footer{
 border-top:1px solid var(--line);
 background:linear-gradient(180deg,rgba(10,33,50,.9),rgba(5,19,30,1));
 padding-top:52px;
}
.footer-grid{
 display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;
 padding-bottom:40px;
}
.footer-brand p{margin:16px 0 0;color:var(--muted);font-size:14px;line-height:1.85;max-width:420px}
.footer-logo{
 display:inline-flex;align-items:center;gap:9px;
 font-size:16.5px;font-weight:700;color:#f2fbff;
}
.footer-col h3{font-size:14px;font-weight:700;color:#e8f5fc;margin:0 0 16px;letter-spacing:.04em}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--muted);transition:color .2s ease}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
 display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
 padding:20px 24px 26px;border-top:1px solid var(--line);
}
.footer-bottom p{margin:0;font-size:13px;color:rgba(147,180,198,.75)}

/* ---------- responsive ---------- */
@media (max-width:1080px){
 .article-wrap{grid-template-columns:minmax(0,1fr) 290px;gap:26px}
 .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:960px){
 .header-inner{grid-template-columns:1fr auto}
 .nav-left,.nav-right{display:none}
 .brand{justify-self:start}
 .nav-toggle{display:inline-flex;align-items:center;justify-content:center;justify-self:end}
 .article-wrap{grid-template-columns:minmax(0,1fr)}
 .article-aside{position:static;flex-direction:row;flex-wrap:wrap}
 .article-aside>*{flex:1 1 280px}
 .cta-band-inner{grid-template-columns:1fr;gap:28px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
 .footer-brand{grid-column:1 / -1}
 .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
 .container{padding:0 18px}
 .header-inner{padding:0 18px;height:60px}
 .page-head-inner{padding:34px 0 42px}
 .article-wrap{padding:36px 0 56px}
 .article-card{padding:22px 20px}
 .prose{font-size:15.5px}
 .prose h2{font-size:20px;margin-top:30px}
 .prose h3{font-size:17px}
 .section{padding:48px 0}
 .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
 .stat-item:nth-child(2){border-right:0}
 .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line)}
 .grid-3{grid-template-columns:1fr}
 .cta-band-inner{padding:46px 0}
 .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:520px){
 .brand{font-size:15px}
 .brtext-hide{display:none}
 .btn{width:100%}
 .cta-actions{flex-direction:column}
 .grid-4{grid-template-columns:1fr}
 .stat-strip{grid-template-columns:1fr}
 .stat-item{border-right:0;border-bottom:1px solid var(--line)}
 .stat-item:last-child{border-bottom:0}
 .article-aside{flex-direction:column}
 .faq-item summary{font-size:14.5px;padding:16px 16px}
 .faq-item .faq-body{padding:0 16px 18px}
 .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
 --ink:#05131e;
 --ink-2:#0a2132;
 --panel:#0e2a3b;
 --panel-2:#123547;
 --line:rgba(122,190,214,.16);
 --line-strong:rgba(122,190,214,.36);
 --text:#e9f5fb;
 --muted:#93b4c6;
 --accent:#37e3d0;
 --accent-dark:#17b3a4;
 --gold:#f4b942;
 --radius:14px;
 --radius-sm:10px;
 --shadow:0 10px 28px rgba(0,0,0,.35);
 --shadow-hover:0 18px 44px rgba(0,0,0,.52);
 --maxw:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 background:var(--ink);
 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;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(5,19,30,.86);
 backdrop-filter:blur(16px);
 -webkit-backdrop-filter:blur(16px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 30px rgba(0,0,0,.5);background:rgba(5,19,30,.96)}
.header-inner{
 max-width:var(--maxw);margin:0 auto;padding:0 24px;
 height:64px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;
}
.brand{
 justify-self:center;
 font-size:17px;font-weight:700;letter-spacing:.02em;
 display:inline-flex;align-items:center;gap:9px;white-space:nowrap;
 color:#f2fbff;
}
.brand-dot{
 width:9px;height:9px;border-radius:50%;
 background:var(--accent);box-shadow:0 0 0 4px rgba(55,227,208,.16);
}
.nav{display:flex;align-items:center;gap:6px}
.nav-left{justify-self:start}
.nav-right{justify-self:end}
.nav-link{
 display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:9px;
 font-size:14.5px;color:var(--muted);font-weight:500;
 transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(122,190,214,.1)}
.nav-link.is-active{color:#05131e;background:var(--accent);font-weight:700}
.nav-cta{
 display:inline-flex;align-items:center;justify-content:center;
 height:38px;padding:0 18px;margin-left:6px;border-radius:9px;
 background:linear-gradient(135deg,var(--gold),#e09b1f);
 color:#241703;font-weight:700;font-size:14px;white-space:nowrap;
 transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
 box-shadow:0 6px 18px rgba(244,185,66,.24);
}
.nav-cta:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 10px 24px rgba(244,185,66,.34)}
.nav-toggle{
 display:none;justify-self:end;
 height:40px;min-width:44px;padding:0 12px;border-radius:9px;
 border:1px solid var(--line-strong);background:rgba(122,190,214,.08);color:var(--text);
 font-size:14px;font-weight:600;
}
.mobile-nav{
 display:none;flex-direction:column;gap:4px;
 padding:10px 20px 18px;border-top:1px solid var(--line);
 background:rgba(5,19,30,.98);
}
.mobile-nav.is-open{display:flex}
.mobile-nav .nav-link{height:44px;width:100%;justify-content:flex-start;font-size:15px}
.mobile-nav .nav-cta{height:44px;margin:8px 0 0;width:100%}

/* ---------- buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 min-height:46px;padding:0 24px;border-radius:10px;
 font-size:15px;font-weight:700;letter-spacing:.01em;
 border:1px solid transparent;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{
 background:linear-gradient(135deg,var(--accent),var(--accent-dark));
 color:#03181a;box-shadow:0 10px 26px rgba(55,227,208,.26);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(55,227,208,.34);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
 background:rgba(233,245,251,.04);color:var(--text);border-color:var(--line-strong);
}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--accent);color:var(--accent);background:rgba(55,227,208,.08)}
.btn-sm{min-height:38px;padding:0 16px;font-size:13.5px;border-radius:8px}

/* ---------- category hero ---------- */
.cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);scroll-margin-top:80px}
.cat-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.04)}
.cat-hero-veil{
 position:absolute;inset:0;
 background:linear-gradient(115deg,rgba(5,19,30,.97) 0%,rgba(5,19,30,.88) 46%,rgba(5,19,30,.52) 100%);
}
.cat-hero-inner{
 position:relative;z-index:2;
 display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;
 padding:64px 0 70px;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px}
.crumb a{color:#b9d6e4;transition:color .2s ease}
.crumb a:hover{color:var(--accent)}
.crumb span{color:rgba(147,180,198,.55)}
.hero-badge{
 display:inline-flex;align-items:center;gap:8px;
 padding:6px 14px;border-radius:999px;
 border:1px solid rgba(55,227,208,.36);
 background:rgba(55,227,208,.1);
 color:var(--accent);font-size:13px;font-weight:600;margin-bottom:20px;
}
.cat-hero h1{
 font-size:clamp(28px,3.8vw,42px);
 line-height:1.3;font-weight:800;letter-spacing:-.01em;
 margin:0 0 18px;
}
.cat-hero h1 em{font-style:normal;color:var(--accent)}
.cat-hero-sub{color:#b6d2e0;font-size:15.5px;line-height:1.85;max-width:620px;margin:0 0 26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.tag{
 display:inline-flex;align-items:center;
 padding:5px 13px;border-radius:999px;
 background:rgba(122,190,214,.1);border:1px solid var(--line);
 color:#b9d6e4;font-size:13px;
}
.tag--gold{color:var(--gold);border-color:rgba(244,185,66,.32);background:rgba(244,185,66,.1)}

/* hero side panel */
.hero-panel{
 background:linear-gradient(160deg,rgba(18,53,71,.94),rgba(10,33,50,.94));
 border:1px solid var(--line-strong);
 border-radius:18px;
 box-shadow:0 26px 60px rgba(0,0,0,.55);
 padding:26px 24px;
}
.hero-panel-head{display:flex;align-items:center;gap:18px;padding-bottom:20px;border-bottom:1px dashed var(--line-strong);margin-bottom:18px}
.ring{
 width:128px;height:128px;border-radius:50%;flex:0 0 auto;
 display:grid;place-items:center;
 background:conic-gradient(var(--accent) 0 78%, rgba(122,190,214,.14) 78% 100%);
}
.ring-inner{
 width:104px;height:104px;border-radius:50%;
 background:#0b2434;display:grid;place-content:center;justify-items:center;gap:2px;
}
.ring-inner strong{font-size:25px;line-height:1.1;color:var(--accent);font-weight:800}
.ring-inner span{font-size:12px;color:var(--muted);letter-spacing:.04em}
.hero-panel-title{font-size:15px;font-weight:700;margin:0 0 6px}
.hero-panel-desc{font-size:13px;color:var(--muted);margin:0;line-height:1.7}
.tier-list{list-style:none;margin:0 0 20px;padding:0;display:grid;gap:10px}
.tier-item{
 display:flex;align-items:center;justify-content:space-between;gap:12px;
 padding:11px 14px;border-radius:var(--radius-sm);
 background:rgba(5,19,30,.5);border:1px solid var(--line);
 transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.tier-item:hover{border-color:var(--line-strong);background:rgba(5,19,30,.72);transform:translateX(3px)}
.tier-name{font-size:13.5px;font-weight:600}
.tier-name small{display:block;color:var(--muted);font-size:12px;font-weight:400;margin-top:2px}
.chip{
 display:inline-flex;align-items:center;padding:3px 9px;border-radius:999px;
 font-size:11.5px;font-weight:700;letter-spacing:.02em;white-space:nowrap;
}
.chip-on{color:#03181a;background:var(--accent)}
.chip-gold{color:#241703;background:var(--gold)}
.chip-soft{color:#b9d6e4;background:rgba(122,190,214,.14);border:1px solid var(--line)}

/* ---------- sections ---------- */
.section{padding:64px 0;border-bottom:1px solid var(--line);scroll-margin-top:80px}
.section--alt{background:linear-gradient(180deg,rgba(10,33,50,.72),rgba(5,19,30,.9))}
.section-head{max-width:760px;margin-bottom:34px}
.section-kicker{
 display:inline-flex;align-items:center;gap:8px;
 font-size:12.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
 color:var(--accent);margin-bottom:12px;
}
.section-kicker::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.section-head h2{
 font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:800;margin:0 0 12px;
}
.section-head p{margin:0;color:var(--muted);font-size:15px;line-height:1.85}

/* ---------- stats ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat-card{
 background:linear-gradient(165deg,rgba(18,53,71,.85),rgba(10,33,50,.9));
 border:1px solid var(--line);border-radius:var(--radius);
 padding:22px 20px;box-shadow:var(--shadow);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.stat-icon{
 width:38px;height:38px;border-radius:10px;margin-bottom:14px;
 display:grid;place-items:center;
 background:rgba(55,227,208,.12);border:1px solid rgba(55,227,208,.28);
 color:var(--accent);
}
.stat-icon svg{width:19px;height:19px}
.stat-value{font-size:26px;font-weight:800;line-height:1.2;color:#f2fbff;letter-spacing:-.01em}
.stat-value small{font-size:14px;font-weight:600;color:var(--accent);margin-left:2px}
.stat-label{margin:8px 0 0;font-size:13.5px;color:var(--muted);line-height:1.65}

/* ---------- matrix cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{
 position:relative;
 background:linear-gradient(170deg,rgba(18,53,71,.82),rgba(10,33,50,.92));
 border:1px solid var(--line);border-radius:var(--radius);
 padding:24px 22px;box-shadow:var(--shadow);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
 display:flex;flex-direction:column;gap:12px;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.card-icon{
 width:42px;height:42px;border-radius:11px;display:grid;place-items:center;
 background:rgba(55,227,208,.1);border:1px solid rgba(55,227,208,.26);color:var(--accent);
}
.card-icon svg{width:21px;height:21px}
.card h3{margin:0;font-size:16.5px;font-weight:700;line-height:1.5}
.card p{margin:0;font-size:14px;color:var(--muted);line-height:1.78}
.card-foot{margin-top:auto;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.card-link{
 display:inline-flex;align-items:center;gap:6px;
 font-size:13.5px;font-weight:700;color:var(--accent);
 transition:gap .2s ease,color .2s ease;
}
.card-link:hover{gap:10px;color:#7ff3e6}

/* ---------- compare ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.compare-card{
 background:radial-gradient(circle at 88% 0%,rgba(55,227,208,.12),transparent 58%),linear-gradient(170deg,rgba(18,53,71,.86),rgba(10,33,50,.94));
 border:1px solid var(--line);border-radius:var(--radius);
 padding:26px 22px;box-shadow:var(--shadow);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.compare-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px}
.compare-card h3{margin:0;font-size:17px;font-weight:700}
.compare-list{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:10px}
.compare-list li{
 display:flex;align-items:flex-start;justify-content:space-between;gap:14px;
 font-size:13.5px;color:var(--muted);
 padding-bottom:10px;border-bottom:1px dashed rgba(122,190,214,.14);
}
.compare-list li:last-child{border-bottom:0;padding-bottom:0}
.compare-list b{color:#dceff8;font-weight:600;text-align:right}
.compare-note{margin:16px 0 0;font-size:13px;color:#8fb0c2;line-height:1.7}

/* ---------- timeline ---------- */
.timeline{position:relative;display:grid;gap:16px;margin:0;padding:0 0 0 26px;list-style:none}
.timeline::before{
 content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;
 background:linear-gradient(180deg,var(--accent),rgba(55,227,208,.08));border-radius:2px;
}
.tl-item{position:relative}
.tl-item::before{
 content:"";position:absolute;left:-26px;top:22px;width:16px;height:16px;border-radius:50%;
 background:var(--ink);border:2px solid var(--accent);box-shadow:0 0 0 4px rgba(55,227,208,.12);
}
.tl-body{
 background:linear-gradient(170deg,rgba(18,53,71,.78),rgba(10,33,50,.9));
 border:1px solid var(--line);border-radius:var(--radius);
 padding:20px 22px;
 transition:border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.tl-body:hover{border-color:var(--line-strong);transform:translateX(4px);box-shadow:var(--shadow)}
.tl-step{font-size:12px;font-weight:800;letter-spacing:.14em;color:var(--accent);margin-bottom:6px}
.tl-body h3{margin:0 0 8px;font-size:16.5px;font-weight:700}
.tl-body p{margin:0;font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- updates list ---------- */
.update-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.post-card{
 background:linear-gradient(170deg,rgba(18,53,71,.82),rgba(10,33,50,.94));
 border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
 box-shadow:var(--shadow);display:flex;flex-direction:column;
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.post-thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-card:hover .post-thumb img{transform:scale(1.05)}
.post-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,19,30,0) 40%,rgba(5,19,30,.7) 100%)}
.post-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:12.5px;color:var(--muted)}
.post-body h3{margin:0;font-size:16px;font-weight:700;line-height:1.55}
.post-body h3 a{transition:color .2s ease}
.post-body h3 a:hover{color:var(--accent)}
.post-body p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.75}
.post-more{margin-top:auto;font-size:13.5px;font-weight:700;color:var(--accent);display:inline-flex;align-items:center;gap:6px;transition:gap .2s ease}
.post-more:hover{gap:10px}
.empty-note{
 grid-column:1/-1;text-align:center;color:var(--muted);
 padding:34px 20px;border:1px dashed var(--line-strong);border-radius:var(--radius);
 background:rgba(10,33,50,.5);font-size:14px;
}

/* ---------- guard ---------- */
.guard-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.guard-item{
 display:flex;gap:16px;
 background:linear-gradient(170deg,rgba(18,53,71,.78),rgba(10,33,50,.9));
 border:1px solid var(--line);border-radius:var(--radius);
 padding:22px;
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.guard-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.guard-icon{
 flex:0 0 44px;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
 background:rgba(244,185,66,.12);border:1px solid rgba(244,185,66,.3);color:var(--gold);
}
.guard-icon svg{width:21px;height:21px}
.guard-item h3{margin:0 0 6px;font-size:16px;font-weight:700}
.guard-item p{margin:0;font-size:13.8px;color:var(--muted);line-height:1.78}

/* ---------- faq ---------- */
.faq-wrap{display:grid;gap:12px}
.faq-item{
 background:linear-gradient(170deg,rgba(18,53,71,.74),rgba(10,33,50,.9));
 border:1px solid var(--line);border-radius:var(--radius-sm);
 overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-q{
 width:100%;text-align:left;background:none;border:0;color:var(--text);
 padding:18px 52px 18px 20px;position:relative;
 font-size:15.5px;font-weight:600;line-height:1.6;
}
.faq-q::after{
 content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
 font-size:20px;font-weight:400;color:var(--accent);transition:transform .25s ease;
}
.faq-item.is-open .faq-q::after{content:"–";transform:translateY(-50%) rotate(0deg)}
.faq-a{display:none;padding:0 20px 20px;font-size:14px;color:var(--muted);line-height:1.85}
.faq-item.is-open .faq-a{display:block}

/* ---------- cta / form ---------- */
.cta-band{
 display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:center;
 background:
  radial-gradient(circle at 92% 8%,rgba(55,227,208,.16),transparent 52%),
  linear-gradient(150deg,rgba(18,53,71,.94),rgba(8,26,39,.96));
 border:1px solid var(--line-strong);border-radius:18px;
 padding:36px;box-shadow:var(--shadow);
}
.cta-band h2{margin:0 0 12px;font-size:clamp(21px,2.4vw,27px);font-weight:800;line-height:1.35}
.cta-band p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.85}
.advice-form{display:grid;gap:12px}
.form-row{display:grid;gap:12px}
.field label{display:block;font-size:13px;color:#b9d6e4;margin-bottom:6px;font-weight:600}
.field select{
 width:100%;min-height:44px;padding:0 12px;border-radius:9px;
 background:rgba(5,19,30,.7);border:1px solid var(--line-strong);color:var(--text);
 transition:border-color .2s ease,background .2s ease;
}
.field select:hover{border-color:var(--accent)}
.field select option{background:#0b2434;color:var(--text)}
.advice-out{
 margin:0;padding:12px 14px;border-radius:9px;
 background:rgba(55,227,208,.1);border:1px solid rgba(55,227,208,.3);
 color:#c7f5ef;font-size:13.5px;line-height:1.7;
}
.form-tip{margin:0;font-size:12.5px;color:#7f9fb1}

/* ---------- footer ---------- */
.site-footer{
 background:linear-gradient(180deg,rgba(5,19,30,1),rgba(4,15,24,1));
 border-top:1px solid var(--line);
 padding-top:52px;
}
.footer-grid{
 display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;
 padding-bottom:38px;
}
.footer-logo{
 display:inline-flex;align-items:center;gap:9px;
 font-size:16.5px;font-weight:700;color:#f2fbff;margin-bottom:14px;
}
.footer-brand p{margin:0;font-size:13.8px;color:var(--muted);line-height:1.85;max-width:420px}
.footer-col h3{margin:0 0 14px;font-size:14px;font-weight:700;color:#dceff8;letter-spacing:.04em}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-col a{font-size:13.8px;color:var(--muted);transition:color .2s ease,padding-left .2s ease}
.footer-col a:hover{color:var(--accent);padding-left:4px}
.footer-bottom{
 display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
 padding:18px 0 26px;border-top:1px solid var(--line);
}
.footer-bottom p{margin:0;font-size:12.8px;color:rgba(147,180,198,.78)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
 .cat-hero-inner{grid-template-columns:1fr;gap:34px;padding:52px 0 58px}
 .hero-panel{max-width:520px}
 .stat-grid{grid-template-columns:repeat(2,1fr)}
 .card-grid{grid-template-columns:repeat(2,1fr)}
 .compare-grid{grid-template-columns:1fr;gap:14px}
 .update-grid{grid-template-columns:repeat(2,1fr)}
 .cta-band{grid-template-columns:1fr;padding:28px}
}
@media (max-width:900px){
 .header-inner{display:flex;justify-content:space-between;align-items:center}
 .brand{font-size:15px}
 .nav-left,.nav-right{display:none}
 .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
 .section{padding:48px 0}
}
@media (max-width:768px){
 .guard-grid{grid-template-columns:1fr}
 .update-grid{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .section-head{margin-bottom:26px}
}
@media (max-width:520px){
 .container{padding:0 16px}
 .header-inner{padding:0 16px}
 .stat-grid{grid-template-columns:1fr}
 .card-grid{grid-template-columns:1fr}
 .hero-actions{flex-direction:column;align-items:stretch}
 .hero-actions .btn{width:100%}
 .hero-panel{padding:20px 18px}
 .hero-panel-head{flex-direction:column;align-items:flex-start;gap:14px}
 .card{padding:20px 18px}
 .cta-band{padding:22px 18px;border-radius:14px}
 .footer-bottom{flex-direction:column;align-items:flex-start}
 .btn{min-height:44px}
}

/* roulang page: category2 */
:root{
 --ink:#05131e;
 --ink-2:#0a2132;
 --panel:#0e2a3b;
 --panel-2:#123547;
 --line:rgba(122,190,214,.16);
 --line-strong:rgba(122,190,214,.36);
 --text:#e9f5fb;
 --muted:#93b4c6;
 --accent:#37e3d0;
 --accent-dark:#17b3a4;
 --gold:#f4b942;
 --radius:14px;
 --radius-sm:10px;
 --shadow:0 10px 28px rgba(0,0,0,.35);
 --shadow-hover:0 18px 44px rgba(0,0,0,.52);
 --maxw:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 background:var(--ink);
 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;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(5,19,30,.86);
 backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 30px rgba(0,0,0,.5);background:rgba(5,19,30,.96)}
.header-inner{
 max-width:var(--maxw);margin:0 auto;padding:0 24px;
 height:64px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:14px;
}
.brand{
 justify-self:center;display:inline-flex;align-items:center;gap:9px;
 font-size:17px;font-weight:700;letter-spacing:.02em;white-space:nowrap;color:#f2fbff;
}
.brand-dot{width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(55,227,208,.16)}
.nav{display:flex;align-items:center;gap:6px}
.nav-left{justify-self:start}
.nav-right{justify-self:end}
.nav-link{
 display:inline-flex;align-items:center;height:38px;padding:0 13px;border-radius:9px;
 font-size:14.5px;color:var(--muted);font-weight:500;white-space:nowrap;
 transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(122,190,214,.1)}
.nav-link.is-active{color:#05131e;background:var(--accent);font-weight:700}
.nav-cta{
 display:inline-flex;align-items:center;justify-content:center;
 height:38px;padding:0 18px;margin-left:6px;border-radius:9px;
 background:linear-gradient(135deg,var(--gold),#e09b1f);
 color:#241703;font-weight:700;font-size:14px;white-space:nowrap;
 box-shadow:0 6px 18px rgba(244,185,66,.24);
 transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.nav-cta:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 10px 24px rgba(244,185,66,.34)}
.nav-toggle{
 display:none;justify-self:end;
 height:40px;min-width:46px;padding:0 12px;border-radius:9px;
 border:1px solid var(--line-strong);background:rgba(122,190,214,.08);color:var(--text);
 font-size:14px;font-weight:600;
}
.mobile-nav{
 display:none;flex-direction:column;gap:4px;
 padding:10px 20px 18px;border-top:1px solid var(--line);
 background:rgba(5,19,30,.98);
}
.mobile-nav.is-open{display:flex}
.mobile-nav .nav-link{height:44px;width:100%;justify-content:flex-start;font-size:15px}
.mobile-nav .nav-cta{height:44px;margin:8px 0 0;width:100%}

/* ---------- buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 min-height:46px;padding:0 24px;border-radius:10px;
 font-size:15px;font-weight:700;letter-spacing:.01em;border:1px solid transparent;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:#03181a;box-shadow:0 10px 26px rgba(55,227,208,.26)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(55,227,208,.34);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(233,245,251,.04);color:var(--text);border-color:var(--line-strong)}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--accent);color:var(--accent);background:rgba(55,227,208,.08)}
.btn-sm{min-height:38px;padding:0 16px;font-size:13.5px;border-radius:8px}

/* ---------- shared bits ---------- */
.tag{
 display:inline-flex;align-items:center;padding:5px 13px;border-radius:999px;
 background:rgba(122,190,214,.1);border:1px solid var(--line);color:#b9d6e4;font-size:13px;
}
.tag--gold{color:var(--gold);border-color:rgba(244,185,66,.32);background:rgba(244,185,66,.1)}
.tag--accent{color:var(--accent);border-color:rgba(55,227,208,.34);background:rgba(55,227,208,.1)}
.section{padding:70px 0;position:relative;scroll-margin-top:82px}
.section--alt{background:linear-gradient(180deg,var(--ink-2) 0%,var(--ink) 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:36px}
.eyebrow{
 display:inline-flex;align-items:center;gap:9px;
 font-size:12.5px;letter-spacing:.16em;color:var(--accent);font-weight:700;
 margin-bottom:12px;
}
.eyebrow::before{content:"";width:26px;height:2px;border-radius:2px;background:var(--accent)}
.section-title{font-size:clamp(22px,2.6vw,30px);font-weight:800;line-height:1.36;letter-spacing:-.01em}
.section-desc{color:var(--muted);margin-top:12px;font-size:15px;line-height:1.85}
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}

/* ---------- hero (slanted) ---------- */
.hero-slant{
 position:relative;overflow:hidden;isolation:isolate;
 padding:74px 0 104px;
 background:
  radial-gradient(120% 130% at 84% 6%,rgba(55,227,208,.16),transparent 58%),
  linear-gradient(180deg,#062130 0%,#05131e 100%);
}
.hero-slant-img{
 position:absolute;inset:0;background-size:cover;background-position:center;
 opacity:.2;z-index:0;
}
.hero-slant-bar{
 position:absolute;top:-10%;right:-8%;width:44%;height:130%;z-index:1;
 background:linear-gradient(200deg,rgba(55,227,208,.24),rgba(55,227,208,.02) 72%);
 transform:skewX(-10deg);border-left:1px solid rgba(55,227,208,.22);
}
.hero-slant::after{
 content:"";position:absolute;left:0;right:0;bottom:-1px;height:92px;z-index:2;
 background:var(--ink);clip-path:polygon(0 100%,100% 22%,100% 100%);
}
.hero-slant-inner{
 position:relative;z-index:3;
 display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;
}
.hero-badge{
 display:inline-flex;align-items:center;gap:8px;
 padding:6px 14px;border-radius:999px;margin-bottom:20px;
 border:1px solid rgba(55,227,208,.36);background:rgba(55,227,208,.1);
 color:var(--accent);font-size:13px;font-weight:600;
}
.hero-slant h1{
 font-size:clamp(29px,3.9vw,42px);line-height:1.28;font-weight:800;letter-spacing:-.01em;
 margin-bottom:18px;text-wrap:balance;
}
.hero-slant h1 em{font-style:normal;color:var(--accent)}
.hero-sub{color:#b6d2e0;font-size:15.5px;line-height:1.88;max-width:620px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.hero-panel{
 background:linear-gradient(160deg,rgba(18,53,71,.94),rgba(10,33,50,.94));
 border:1px solid var(--line-strong);border-radius:18px;padding:26px;
 box-shadow:0 26px 60px rgba(0,0,0,.5);
}
.hero-panel h2{font-size:15px;font-weight:700;color:#cfe8f3;margin-bottom:18px;letter-spacing:.02em}
.hero-panel-row{
 display:flex;align-items:baseline;justify-content:space-between;gap:14px;
 padding:13px 0;border-bottom:1px dashed rgba(122,190,214,.18);
}
.hero-panel-row:last-of-type{border-bottom:0}
.hero-panel-label{font-size:13.5px;color:var(--muted)}
.hero-panel-value{font-size:17px;font-weight:800;color:var(--accent);letter-spacing:-.01em}
.hero-panel-note{
 margin-top:16px;padding-top:16px;border-top:1px solid var(--line);
 font-size:13px;color:var(--muted);line-height:1.8;
}

/* ---------- stat ---------- */
.stat{
 background:linear-gradient(160deg,var(--panel),var(--ink-2));
 border:1px solid var(--line);border-radius:var(--radius);padding:22px;
 box-shadow:var(--shadow);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.stat:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.stat-num{font-size:31px;line-height:1.2;font-weight:800;color:var(--accent);letter-spacing:-.02em}
.stat-num span{font-size:15px;font-weight:700;color:var(--muted);margin-left:4px}
.stat-label{margin-top:8px;font-size:15px;font-weight:700;color:#dceef7}
.stat-note{margin-top:6px;font-size:13.5px;color:var(--muted);line-height:1.75}

/* ---------- card ---------- */
.card{
 position:relative;background:linear-gradient(160deg,var(--panel),var(--ink-2));
 border:1px solid var(--line);border-radius:var(--radius);padding:24px;
 box-shadow:var(--shadow);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.card h3{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:10px;color:#eef8fd}
.card p{color:var(--muted);font-size:14.5px;line-height:1.8}
.card-media{margin:-24px -24px 20px;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0}
.card-media img{width:100%;height:168px;object-fit:cover;transition:transform .35s ease}
.card:hover .card-media img{transform:scale(1.05)}
.card-foot{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.card-index{
 display:inline-flex;align-items:center;justify-content:center;
 width:30px;height:30px;border-radius:9px;margin-bottom:14px;
 background:rgba(55,227,208,.12);color:var(--accent);
 font-size:13px;font-weight:800;letter-spacing:.02em;
}

/* ---------- compare ---------- */
.compare-col{
 background:linear-gradient(170deg,rgba(18,53,71,.9),rgba(10,33,50,.9));
 border:1px solid var(--line);border-radius:var(--radius);padding:24px;
 box-shadow:var(--shadow);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.compare-col:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.compare-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.compare-head h3{font-size:16.5px;font-weight:800;color:#eef8fd}
.compare-list{margin-top:16px;display:flex;flex-direction:column;gap:12px}
.compare-list li{display:flex;gap:10px;font-size:14px;color:var(--muted);line-height:1.75}
.compare-list li b{color:var(--text);font-weight:700;flex:0 0 auto}
.compare-list li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;border-radius:50%;background:var(--accent);opacity:.75}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:30px}
.timeline::before{
 content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;
 background:linear-gradient(180deg,var(--accent),rgba(55,227,208,0));
}
.timeline-item{position:relative;padding-bottom:26px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
 content:"";position:absolute;left:-30px;top:9px;width:12px;height:12px;border-radius:50%;
 background:var(--accent);box-shadow:0 0 0 4px rgba(55,227,208,.14);
}
.timeline-item h3{font-size:16px;font-weight:700;color:#eef8fd;margin-bottom:6px}
.timeline-item p{font-size:14.5px;color:var(--muted);line-height:1.8}
.timeline-step{
 display:inline-block;margin-bottom:6px;font-size:12.5px;font-weight:700;
 color:var(--gold);letter-spacing:.08em;
}

/* ---------- posts ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.post-card{
 display:flex;flex-direction:column;gap:10px;
 background:linear-gradient(160deg,var(--panel),var(--ink-2));
 border:1px solid var(--line);border-radius:var(--radius);padding:22px;
 box-shadow:var(--shadow);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.post-title{font-size:16px;font-weight:700;line-height:1.55;color:#eef8fd}
.post-desc{font-size:14px;color:var(--muted);line-height:1.78}
.post-meta{font-size:12.5px;color:rgba(147,180,198,.85);letter-spacing:.02em}
.post-empty{grid-column:1/-1;padding:28px;border:1px dashed var(--line-strong);border-radius:var(--radius);color:var(--muted);font-size:14.5px;text-align:center}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
 background:linear-gradient(160deg,var(--panel),var(--ink-2));
 border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
 transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:var(--line-strong);box-shadow:var(--shadow)}
.faq-item summary{
 list-style:none;cursor:pointer;padding:18px 52px 18px 22px;position:relative;
 font-size:15.5px;font-weight:700;color:#eef8fd;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"";position:absolute;right:22px;top:26px;width:9px;height:9px;
 border-right:2px solid var(--accent);border-bottom:2px solid var(--accent);
 transform:rotate(45deg);transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg);top:29px}
.faq-body{padding:0 22px 20px;color:var(--muted);font-size:14.5px;line-height:1.85}

/* ---------- form / cta ---------- */
.cta-band{
 position:relative;overflow:hidden;
 background:linear-gradient(140deg,rgba(23,179,164,.16),rgba(10,33,50,.96) 55%);
 border:1px solid var(--line-strong);border-radius:20px;padding:36px;
 display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;
 box-shadow:0 24px 60px rgba(0,0,0,.42);
}
.cta-band h2{font-size:clamp(21px,2.4vw,27px);font-weight:800;line-height:1.4;margin-bottom:12px}
.cta-band p{color:var(--muted);font-size:14.5px;line-height:1.85}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:7px}
.field--full{grid-column:1/-1}
.field label{font-size:13px;color:#b9d6e4;font-weight:600}
.field select,.field input,.field textarea{
 width:100%;min-height:44px;padding:10px 13px;border-radius:9px;
 background:rgba(5,19,30,.72);border:1px solid var(--line-strong);
 color:var(--text);font-size:14px;line-height:1.6;
 transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:88px;resize:vertical}
.field select:focus,.field input:focus,.field textarea:focus{
 outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(55,227,208,.16);
}
.form-note{grid-column:1/-1;font-size:12.5px;color:var(--muted);line-height:1.7}
.form-msg{
 grid-column:1/-1;display:none;padding:10px 14px;border-radius:9px;
 background:rgba(55,227,208,.12);border:1px solid rgba(55,227,208,.36);
 color:var(--accent);font-size:13.5px;
}
.form-msg.is-show{display:block}
.form-actions{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* ---------- footer ---------- */
.site-footer{
 margin-top:72px;border-top:1px solid var(--line);
 background:linear-gradient(180deg,rgba(10,33,50,.9),rgba(5,19,30,1));
 padding:56px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px}
.footer-brand p{color:var(--muted);font-size:14px;line-height:1.85;margin-top:14px;max-width:420px}
.footer-logo{
 display:inline-flex;align-items:center;gap:9px;
 font-size:16.5px;font-weight:700;color:#f2fbff;
}
.footer-col h3{font-size:14.5px;font-weight:700;color:#dceef7;margin-bottom:14px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--muted);transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
 display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
 margin-top:44px;padding:20px 24px;border-top:1px solid var(--line);
 font-size:13px;color:rgba(147,180,198,.8);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
 .hero-slant-inner{grid-template-columns:1fr;gap:34px}
 .hero-panel{max-width:560px}
 .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
 .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
 .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .cta-band{grid-template-columns:1fr;padding:30px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
 .footer-brand{grid-column:1/-1}
}
@media (max-width:900px){
 .header-inner{display:flex;align-items:center;justify-content:space-between;gap:12px}
 .nav-left,.nav-right{display:none}
 .brand{justify-self:auto;font-size:16px}
 .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
}
@media (max-width:768px){
 .section{padding:54px 0}
 .hero-slant{padding:56px 0 84px}
 .hero-slant::after{height:62px;clip-path:polygon(0 100%,100% 46%,100% 100%)}
 .hero-slant-bar{width:70%;opacity:.7}
 .grid-4,.grid-3,.grid-2{grid-template-columns:1fr}
 .post-grid{grid-template-columns:1fr}
 .form-grid{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr}
 .hero-actions .btn{width:100%}
 .compare-col{padding:20px}
 .card-media img{height:190px}
}
@media (max-width:520px){
 .container{padding:0 18px}
 .header-inner{padding:0 16px}
 .hero-slant h1{font-size:26px}
 .hero-sub{font-size:14.5px}
 .section-title{font-size:21px}
 .btn{min-height:44px;padding:0 18px;font-size:14.5px}
 .stat-num{font-size:26px}
 .card,.stat,.post-card{border-radius:12px;padding:20px}
 .card-media{margin:-20px -20px 16px}
 .cta-band{padding:22px;border-radius:16px}
 .footer-bottom{padding:18px;font-size:12.5px}
}

/* roulang page: category3 */
:root{
 --ink:#05131e;
 --ink-2:#0a2132;
 --panel:#0e2a3b;
 --panel-2:#123547;
 --line:rgba(122,190,214,.16);
 --line-strong:rgba(122,190,214,.36);
 --text:#e9f5fb;
 --muted:#93b4c6;
 --accent:#37e3d0;
 --accent-dark:#17b3a4;
 --gold:#f4b942;
 --radius:14px;
 --radius-sm:10px;
 --shadow:0 10px 28px rgba(0,0,0,.35);
 --shadow-hover:0 18px 44px rgba(0,0,0,.52);
 --maxw:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 background:var(--ink);
 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;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(5,19,30,.86);
 backdrop-filter:blur(16px);
 -webkit-backdrop-filter:blur(16px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 30px rgba(0,0,0,.5);background:rgba(5,19,30,.96)}
.header-inner{
 max-width:var(--maxw);margin:0 auto;padding:0 24px;
 height:64px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;
}
.brand{
 justify-self:center;
 font-size:17px;font-weight:700;letter-spacing:.02em;
 display:inline-flex;align-items:center;gap:9px;white-space:nowrap;
 color:#f2fbff;
}
.brand-dot{
 width:9px;height:9px;border-radius:50%;flex:none;
 background:var(--accent);box-shadow:0 0 0 4px rgba(55,227,208,.16);
}
.nav{display:flex;align-items:center;gap:6px}
.nav-left{justify-self:start}
.nav-right{justify-self:end}
.nav-link{
 display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:9px;
 font-size:14.5px;color:var(--muted);font-weight:500;
 transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(122,190,214,.1)}
.nav-link.is-active{color:#05131e;background:var(--accent);font-weight:700}
.nav-cta{
 display:inline-flex;align-items:center;justify-content:center;
 height:38px;padding:0 18px;margin-left:6px;border-radius:9px;
 background:linear-gradient(135deg,var(--gold),#e09b1f);
 color:#241703;font-weight:700;font-size:14px;white-space:nowrap;
 transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
 box-shadow:0 6px 18px rgba(244,185,66,.24);
}
.nav-cta:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 10px 24px rgba(244,185,66,.34)}
.nav-toggle{
 display:none;justify-self:end;
 height:40px;min-width:44px;padding:0 12px;border-radius:9px;
 border:1px solid var(--line-strong);background:rgba(122,190,214,.08);color:var(--text);
 font-size:14px;font-weight:600;
}
.mobile-nav{
 display:none;flex-direction:column;gap:4px;
 padding:10px 20px 18px;border-top:1px solid var(--line);
 background:rgba(5,19,30,.98);
}
.mobile-nav.is-open{display:flex}
.mobile-nav .nav-link{height:44px;width:100%;justify-content:flex-start;font-size:15px}
.mobile-nav .nav-cta{height:44px;margin:8px 0 0;width:100%}

/* ---------- buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 min-height:46px;padding:0 24px;border-radius:10px;
 font-size:15px;font-weight:700;letter-spacing:.01em;
 border:1px solid transparent;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{
 background:linear-gradient(135deg,var(--accent),var(--accent-dark));
 color:#03181a;box-shadow:0 10px 26px rgba(55,227,208,.26);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(55,227,208,.34);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
 background:rgba(233,245,251,.04);color:var(--text);border-color:var(--line-strong);
}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--accent);color:var(--accent);background:rgba(55,227,208,.08)}
.btn-sm{min-height:38px;padding:0 16px;font-size:13.5px;border-radius:8px}

/* ---------- category hero ---------- */
.cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);scroll-margin-top:80px}
.cat-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.05)}
.cat-hero-veil{position:absolute;inset:0;background:linear-gradient(115deg,rgba(5,19,30,.97) 0%,rgba(5,19,30,.9) 46%,rgba(5,19,30,.6) 100%)}
.cat-hero-inner{
 position:relative;z-index:2;
 display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center;
 padding:70px 0 78px;
}
.hero-badge{
 display:inline-flex;align-items:center;gap:8px;
 padding:6px 14px;border-radius:999px;
 border:1px solid rgba(55,227,208,.36);
 background:rgba(55,227,208,.1);
 color:var(--accent);font-size:13px;font-weight:600;margin-bottom:20px;
}
.cat-hero h1{
 font-size:clamp(28px,3.9vw,42px);
 line-height:1.3;font-weight:800;letter-spacing:-.01em;
 margin:0 0 20px;text-wrap:balance;
}
.cat-hero h1 em{font-style:normal;color:var(--accent)}
.hero-sub{color:#b6d2e0;font-size:15.5px;line-height:1.85;max-width:620px;margin:0 0 28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.tag{
 display:inline-flex;align-items:center;
 padding:5px 13px;border-radius:999px;
 background:rgba(122,190,214,.1);border:1px solid var(--line);
 color:#b9d6e4;font-size:13px;
}
.tag--gold{color:var(--gold);border-color:rgba(244,185,66,.32);background:rgba(244,185,66,.1)}
.cat-hero-side{position:relative}
.side-figure{
 margin:0;border-radius:16px;overflow:hidden;
 border:1px solid var(--line-strong);
 box-shadow:0 24px 60px rgba(0,0,0,.55);
}
.side-figure img{width:100%;height:286px;object-fit:cover}
.side-panel{
 position:relative;margin:-42px 24px 0 24px;
 background:rgba(14,42,59,.95);
 border:1px solid var(--line-strong);
 border-radius:12px;padding:16px 20px;
 backdrop-filter:blur(10px);
 box-shadow:0 16px 40px rgba(0,0,0,.45);
}
.side-panel-label{font-size:12.5px;letter-spacing:.14em;color:var(--accent);font-weight:700;margin:0 0 10px}
.side-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.side-list li{display:flex;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--muted)}
.side-list b{color:var(--text);font-weight:700;white-space:nowrap}

/* ---------- sections ---------- */
.section{padding:72px 0;border-top:1px solid var(--line);scroll-margin-top:80px}
.section--alt{background:var(--ink-2)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;flex-wrap:wrap;margin-bottom:38px}
.section-kicker{
 display:inline-flex;align-items:center;gap:10px;
 font-size:12.5px;letter-spacing:.2em;color:var(--accent);font-weight:700;
}
.section-kicker::before{content:"";width:26px;height:2px;border-radius:2px;background:var(--accent)}
.section-title{
 font-size:clamp(22px,2.6vw,30px);font-weight:800;line-height:1.35;
 margin:12px 0 10px;letter-spacing:-.01em;
}
.section-desc{color:var(--muted);font-size:15px;line-height:1.8;margin:0;max-width:680px}

/* ---------- stats ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat-card{
 background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
 padding:24px 22px;box-shadow:var(--shadow);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.stat-label{font-size:13.5px;color:var(--muted);margin:0 0 10px;font-weight:600}
.stat-num{font-size:32px;font-weight:800;line-height:1.1;color:var(--accent);margin:0 0 10px;letter-spacing:-.02em}
.stat-num small{font-size:13.5px;font-weight:700;color:var(--muted);margin-left:5px;letter-spacing:0}
.stat-note{font-size:13px;color:var(--muted);line-height:1.7;margin:0}

/* ---------- cards ---------- */
.card-grid{display:grid;gap:20px}
.card-grid--4{grid-template-columns:repeat(4,1fr)}
.card-grid--3{grid-template-columns:repeat(3,1fr)}
.card{
 background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
 overflow:hidden;box-shadow:var(--shadow);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.card-media img{width:100%;height:152px;object-fit:cover}
.card-body{padding:18px 20px 22px}
.badge{
 display:inline-flex;align-items:center;
 padding:3px 10px;border-radius:999px;margin-bottom:12px;
 font-size:12px;font-weight:600;letter-spacing:.02em;
 color:var(--accent);background:rgba(55,227,208,.1);border:1px solid rgba(55,227,208,.26);
}
.card-title{font-size:17px;font-weight:700;margin:0 0 8px;line-height:1.45}
.card-text{font-size:14px;color:var(--muted);line-height:1.78;margin:0}

/* ---------- compare ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.compare-panel{
 background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
 padding:26px 24px;box-shadow:var(--shadow);
 transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.compare-panel:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.compare-panel h3{font-size:17px;font-weight:700;margin:0 0 6px}
.compare-sub{font-size:13.5px;color:var(--muted);margin:0 0 20px}
.compare-panel--bad h3{color:#ff9f9f}
.compare-panel--good h3{color:var(--accent)}
.bar-row{display:grid;grid-template-columns:84px 1fr 52px;align-items:center;gap:12px;margin-bottom:14px}
.bar-label{font-size:13.5px;color:var(--muted)}
.bar{height:8px;border-radius:999px;background:rgba(122,190,214,.14);overflow:hidden}
.bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,rgba(255,120,120,.85),rgba(255,90,90,.55))}
.compare-panel--good .bar i{background:linear-gradient(90deg,var(--accent),var(--accent-dark))}
.bar-val{font-size:13px;font-weight:700;color:var(--text);text-align:right}

/* ---------- steps ---------- */
.step-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step-item{
 position:relative;
 background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
 padding:26px 24px 24px;box-shadow:var(--shadow);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.step-num{
 display:inline-flex;align-items:center;justify-content:center;
 width:38px;height:38px;border-radius:10px;margin-bottom:16px;
 background:rgba(244,185,66,.14);border:1px solid rgba(244,185,66,.34);
 color:var(--gold);font-weight:800;font-size:14px;letter-spacing:.04em;
}
.step-item h3{font-size:16.5px;font-weight:700;margin:0 0 10px;line-height:1.5}
.step-item p{font-size:14px;color:var(--muted);line-height:1.78;margin:0}

/* ---------- scene ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.scene-item{
 display:flex;gap:18px;align-items:flex-start;
 background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
 padding:24px 24px 22px;box-shadow:var(--shadow);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.scene-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.scene-icon{
 flex:none;width:46px;height:46px;border-radius:12px;
 display:flex;align-items:center;justify-content:center;
 background:rgba(55,227,208,.1);border:1px solid rgba(55,227,208,.28);color:var(--accent);
}
.scene-icon svg{width:22px;height:22px}
.scene-item h3{font-size:16.5px;font-weight:700;margin:0 0 8px;line-height:1.5}
.scene-item p{font-size:14px;color:var(--muted);line-height:1.78;margin:0}

/* ---------- channels ---------- */
.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.channel-card{
 display:flex;flex-direction:column;
 background:linear-gradient(160deg,var(--panel-2),var(--panel));
 border:1px solid var(--line);border-radius:var(--radius);
 padding:26px 24px;box-shadow:var(--shadow);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease;
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(55,227,208,.45)}
.channel-index{font-size:12.5px;font-weight:800;letter-spacing:.2em;color:var(--gold);margin-bottom:14px}
.channel-card h3{font-size:18px;font-weight:700;margin:0 0 10px}
.channel-card p{font-size:14px;color:var(--muted);line-height:1.78;margin:0 0 18px}
.channel-more{margin-top:auto;font-size:13.5px;font-weight:700;color:var(--accent);display:inline-flex;align-items:center;gap:6px}
.channel-more::after{content:"→";transition:transform .2s ease}
.channel-card:hover .channel-more::after{transform:translateX(4px)}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-card{
 display:flex;flex-direction:column;
 background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
 padding:22px 22px 20px;box-shadow:var(--shadow);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.news-title{font-size:16px;font-weight:700;line-height:1.55;margin:0 0 10px}
.news-text{font-size:13.5px;color:var(--muted);line-height:1.78;margin:0 0 16px}
.news-meta{margin-top:auto;font-size:12.5px;color:#7ea3b6;letter-spacing:.02em}
.empty-tip{
 background:var(--panel);border:1px dashed var(--line-strong);border-radius:var(--radius);
 padding:34px 24px;text-align:center;color:var(--muted);font-size:14.5px;margin:0;
}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{
 background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);
 padding:0 22px;transition:border-color .2s ease,background .2s ease;
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item[open]{background:var(--panel-2);border-color:var(--line-strong)}
.faq-item summary{
 list-style:none;cursor:pointer;padding:18px 0;
 display:flex;align-items:center;justify-content:space-between;gap:18px;
 font-size:15.5px;font-weight:700;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";color:var(--accent);font-size:20px;font-weight:700;line-height:1;flex:none}
.faq-item[open] summary::after{content:"–"}
.faq-item p{margin:0 0 20px;font-size:14.5px;color:var(--muted);line-height:1.82}

/* ---------- cta band ---------- */
.cta-band{
 display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
 background:linear-gradient(120deg,rgba(55,227,208,.14),rgba(244,185,66,.1));
 border:1px solid var(--line-strong);border-radius:18px;
 padding:42px 40px;box-shadow:var(--shadow);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);font-weight:800;margin:0 0 10px;line-height:1.4}
.cta-band p{font-size:14.5px;color:#b6d2e0;line-height:1.8;margin:0;max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-2);border-top:1px solid var(--line);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;padding-bottom:42px}
.footer-logo{
 display:inline-flex;align-items:center;gap:9px;
 font-size:16px;font-weight:700;margin-bottom:14px;color:#f2fbff;
}
.footer-brand p{color:var(--muted);font-size:14px;line-height:1.85;margin:0;max-width:380px}
.footer-col h3{font-size:14px;font-weight:700;letter-spacing:.08em;margin:0 0 14px;color:var(--text)}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.footer-col a{color:var(--muted);font-size:14px;transition:color .2s ease}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
 display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
 border-top:1px solid var(--line);
 padding:18px 24px;color:var(--muted);font-size:13px;
}
.footer-bottom p{margin:0}

/* ---------- responsive ---------- */
@media (max-width:1024px){
 .stat-grid{grid-template-columns:repeat(2,1fr)}
 .card-grid--4{grid-template-columns:repeat(2,1fr)}
 .card-grid--3{grid-template-columns:repeat(2,1fr)}
 .step-list{grid-template-columns:1fr}
 .news-grid{grid-template-columns:repeat(2,1fr)}
 .channel-grid{grid-template-columns:1fr}
 .cat-hero-inner{gap:40px;padding:60px 0 68px}
}
@media (max-width:960px){
 .header-inner{grid-template-columns:1fr auto}
 .nav-left,.nav-right{display:none}
 .brand{justify-self:start}
 .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
}
@media (max-width:768px){
 .cat-hero-inner{grid-template-columns:1fr;padding:52px 0 58px}
 .side-figure img{height:230px}
 .side-panel{margin:-32px 16px 0 16px}
 .compare{grid-template-columns:1fr}
 .scene-grid{grid-template-columns:1fr}
 .section{padding:56px 0}
 .cta-band{padding:32px 26px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
 .footer-brand{grid-column:1 / -1}
}
@media (max-width:520px){
 .container{padding:0 18px}
 .header-inner{padding:0 18px}
 .stat-grid{grid-template-columns:1fr}
 .card-grid--4,.card-grid--3,.news-grid{grid-template-columns:1fr}
 .hero-actions .btn{width:100%}
 .bar-row{grid-template-columns:72px 1fr 46px}
 .footer-grid{grid-template-columns:1fr}
 .footer-bottom{padding:16px 18px;flex-direction:column;align-items:flex-start}
 .cta-actions .btn{width:100%}
}