/* roulang page: index */
:root{
  --bg-0:#070B1A;
  --bg-1:#0B1226;
  --bg-2:#101A33;
  --brand:#6E8BFF;
  --brand-2:#9B7BFF;
  --warm:#FF8A5B;
  --mint:#4FE3C1;
  --text:#EAF0FF;
  --text-2:#A6B2D4;
  --text-3:#6E7B9C;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(110,139,255,.45);
  --glass:rgba(255,255,255,.055);
  --radius:20px;
  --radius-lg:24px;
  --shadow:0 18px 44px rgba(3,7,20,.55);
  --shadow-btn:0 10px 26px rgba(110,139,255,.42);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:clamp(30px,4.6vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.01em}
h2{font-size:clamp(22px,2.8vw,34px);line-height:1.25;font-weight:700}
h3{font-size:18px;line-height:1.45;font-weight:700}
p{color:var(--text-2)}
strong{color:var(--text)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
.section{padding:56px 0;position:relative}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:32px}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.12em;color:var(--brand);text-transform:uppercase;margin-bottom:12px}
.section-head p{margin-top:14px;font-size:15px;line-height:1.9}

/* header */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,26,.55);
  backdrop-filter:blur(14px) saturate(130%);
  -webkit-backdrop-filter:blur(14px) saturate(130%);
  border-bottom:1px solid transparent;
  transition:background 200ms ease,border-color 200ms ease;
}
.site-header.is-scrolled{background:rgba(7,11,26,.88);border-bottom-color:var(--line)}
.nav{display:flex;align-items:center;gap:16px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 8px 20px rgba(110,139,255,.38);
  color:#fff;font-size:16px;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-name{font-size:15px;font-weight:800;letter-spacing:.02em}
.logo-sub{font-size:11px;color:var(--text-3);letter-spacing:.08em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{position:relative;padding:8px 14px;border-radius:999px;font-size:14px;color:var(--text-2);transition:color 180ms ease,background 180ms ease}
.nav-link:hover,.nav-link:focus-visible{color:var(--text);background:rgba(255,255,255,.06)}
.nav-link.active{color:var(--text)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
}
.nav-cta{margin-left:10px;padding:11px 20px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  color:var(--text);align-items:center;justify-content:center;font-size:16px;
  transition:background 180ms ease,border-color 180ms ease;
}
.nav-toggle:hover{background:rgba(255,255,255,.07);border-color:var(--line-strong)}
.mobile-menu{display:none;border-top:1px solid var(--line);background:rgba(7,11,26,.98);padding:14px 20px 22px}
.mobile-menu.open{display:block}
.mobile-menu .nav-link{display:block;padding:13px 6px;border-radius:10px;font-size:15px}
.mobile-menu .btn{width:100%;margin-top:12px}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;white-space:nowrap;
  transition:transform 180ms ease,box-shadow 180ms ease,background 180ms ease,filter 180ms ease,border-color 180ms ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;box-shadow:var(--shadow-btn);
}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 14px 32px rgba(110,139,255,.52);transform:translateY(-1px)}
.btn-primary:active{transform:none;box-shadow:0 6px 16px rgba(110,139,255,.4)}
.btn-ghost{border-color:var(--line);color:var(--text);background:rgba(255,255,255,.02)}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:var(--line-strong);transform:translateY(-1px)}
.btn-ghost:active{transform:none}
.btn:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px}

/* glass card */
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius);
  backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:border-color 200ms ease,transform 200ms ease,box-shadow 200ms ease;
}
.card-hover:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:0 16px 36px rgba(3,7,20,.5)}

/* tags */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12px;letter-spacing:.04em;
  border:1px solid rgba(110,139,255,.45);color:#C6D2FF;background:rgba(110,139,255,.12);
}
.tag-warm{border-color:rgba(255,138,91,.45);color:#FFC0A6;background:rgba(255,138,91,.12)}
.tag-mint{border-color:rgba(79,227,193,.4);color:#A9F4E4;background:rgba(79,227,193,.1)}

/* hero */
.hero{position:relative;overflow:hidden;padding:64px 0 60px;border-bottom:1px solid var(--line)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.26}
.hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(900px 420px at 78% 12%,rgba(155,123,255,.22),transparent 65%),
             linear-gradient(180deg,rgba(7,11,26,.62),rgba(7,11,26,.97) 76%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:42px;align-items:start}
.hero h1{margin:16px 0 18px;max-width:16em}
.hero h1 .hl{background:linear-gradient(120deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{font-size:16px;line-height:1.95;max-width:44em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-metrics li{
  font-size:13px;color:var(--text-2);padding:6px 14px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
}
.hero-panel{padding:22px}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.panel-head h2{font-size:17px;font-weight:700}
.live-dot{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--mint)}
.live-dot::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 4px rgba(79,227,193,.16)}
.entry-list{display:flex;flex-direction:column;gap:10px}
.entry-item{
  display:flex;align-items:flex-start;gap:12px;padding:13px 14px;border-radius:14px;
  background:rgba(16,26,51,.66);border:1px solid var(--line);
  transition:border-color 180ms ease,background 180ms ease,transform 180ms ease;
}
.entry-item:hover{border-color:var(--line-strong);background:rgba(16,26,51,.95);transform:translateX(2px)}
.entry-ico{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(110,139,255,.28),rgba(155,123,255,.2));
  color:#C9D4FF;font-size:14px;
}
.entry-body{min-width:0}
.entry-body h3{font-size:14px;margin-bottom:2px}
.entry-body p{font-size:12.5px;line-height:1.7;color:var(--text-3)}
.entry-go{margin-left:auto;color:var(--text-3);font-size:12px;align-self:center}
.panel-foot{display:block;margin-top:16px;text-align:center;font-size:13px;color:var(--brand);padding:9px;border-radius:12px;border:1px dashed rgba(110,139,255,.35);transition:background 180ms ease,color 180ms ease}
.panel-foot:hover{background:rgba(110,139,255,.12);color:#D6DEFF}

/* timeline */
.timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:8px}
.tl-item{padding:18px 18px 20px}
.tl-time{font-size:20px;font-weight:800;font-variant-numeric:tabular-nums;background:linear-gradient(120deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.tl-title{font-size:14px;font-weight:700;margin:6px 0 4px;color:var(--text)}
.tl-desc{font-size:12.5px;line-height:1.7;color:var(--text-3)}

/* grids */
.grid{display:grid;gap:24px}
.g-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.g-2-1{grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr)}

.feature{padding:26px;display:flex;flex-direction:column;gap:10px}
.feature .ico{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;font-size:17px;
  background:linear-gradient(135deg,rgba(110,139,255,.3),rgba(155,123,255,.18));
  color:#CBD6FF;border:1px solid rgba(110,139,255,.28);
}
.feature h3{font-size:17px}
.feature p{font-size:14px;line-height:1.9}
.feature .link{font-size:13px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;transition:color 180ms ease,gap 180ms ease}
.feature .link:hover{color:var(--warm);gap:10px}
.feature-tall{grid-row:span 2}

.form-card{padding:26px;position:relative;display:flex;flex-direction:column;gap:10px}
.form-card .tag{position:absolute;top:18px;right:18px}

/* scenes */
.scene{padding:0;overflow:hidden;display:flex;flex-direction:column}
.scene-img{aspect-ratio:16/10;background:var(--bg-2);overflow:hidden}
.scene-img img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease;opacity:.9}
.scene:hover .scene-img img{transform:scale(1.05)}
.scene-body{padding:18px 20px 22px}
.scene-body h3{font-size:16px;margin-bottom:6px}
.scene-body p{font-size:13.5px;line-height:1.8}

/* demo */
.demo-wrap{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:38px;align-items:center}
.demo-shots{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.shot{
  aspect-ratio:9/16;border-radius:20px;overflow:hidden;background:var(--bg-2);
  border:1px solid var(--line);box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  position:relative;
}
.shot img{width:100%;height:100%;object-fit:cover;opacity:.92}
.shot:nth-child(2){transform:translateY(-16px)}
.steps{display:flex;flex-direction:column;gap:18px;margin-top:6px}
.step{display:flex;gap:14px;align-items:flex-start}
.step-num{
  flex:0 0 32px;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;
  font-size:13px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 8px 18px rgba(110,139,255,.32);
}
.step h3{font-size:15px;margin-bottom:2px}
.step p{font-size:13.5px;line-height:1.8}

/* mechanism */
.mech{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.mech-item{padding:22px;position:relative}
.mech-item .num{font-size:13px;font-weight:800;color:var(--warm);font-variant-numeric:tabular-nums;letter-spacing:.08em}
.mech-item h3{font-size:15px;margin:8px 0 6px}
.mech-item p{font-size:13px;line-height:1.75}
.mech-item::after{
  content:"";position:absolute;right:-9px;top:50%;width:18px;height:1px;background:var(--line);
}
.mech-item:last-child::after{display:none}

/* safety */
.safe-item{display:flex;gap:14px;padding:20px;align-items:flex-start}
.safe-item i{color:var(--mint);font-size:16px;margin-top:4px}
.safe-item h3{font-size:15px;margin-bottom:4px}
.safe-item p{font-size:13.5px;line-height:1.8}

/* news layout */
.news-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:32px;align-items:start}
.post-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.post-card{display:flex;flex-direction:column;overflow:hidden;padding:0}
.post-cover{aspect-ratio:16/9;background:var(--bg-2);overflow:hidden}
.post-cover img{width:100%;height:100%;object-fit:cover;opacity:.9;transition:transform 400ms ease}
.post-card:hover .post-cover img{transform:scale(1.05)}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.post-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-3);flex-wrap:wrap}
.post-meta .cat{color:#C6D2FF;border:1px solid rgba(110,139,255,.4);background:rgba(110,139,255,.12);padding:2px 10px;border-radius:999px}
.post-body h3{font-size:16px;line-height:1.55}
.post-body h3 a{transition:color 180ms ease}
.post-body h3 a:hover{color:var(--brand)}
.post-body p{font-size:13.5px;line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-more{margin-top:auto;font-size:13px;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.post-more:hover{color:var(--warm)}
.side-panel{padding:20px;position:sticky;top:92px}
.side-panel h3{font-size:15px;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.side-list{display:flex;flex-direction:column;gap:10px;margin-bottom:18px}
.side-list li a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:12px;font-size:13.5px;color:var(--text-2);
  background:rgba(16,26,51,.6);border:1px solid var(--line);
  transition:border-color 180ms ease,color 180ms ease,background 180ms ease;
}
.side-list li a:hover{color:var(--text);border-color:var(--line-strong);background:rgba(16,26,51,.95)}
.side-list li a span.k{color:var(--text-3);font-size:12px}
.side-note{font-size:12.5px;color:var(--text-3);line-height:1.8}
.side-dl{display:flex;flex-direction:column;gap:8px;margin-top:14px}
.side-dl a{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:12px;
  font-size:13px;color:var(--text-2);border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:border-color 180ms ease,color 180ms ease,background 180ms ease;
}
.side-dl a:hover{color:#fff;border-color:var(--line-strong);background:rgba(110,139,255,.14)}
.side-dl a .f{margin-left:auto;font-size:11px;color:var(--text-3)}
.empty-state{
  padding:48px 24px;text-align:center;border:1px dashed var(--line);border-radius:var(--radius);
  background:rgba(16,26,51,.4);
}
.empty-state i{font-size:26px;color:var(--text-3);margin-bottom:10px;display:block}
.empty-state p{font-size:14px;color:var(--text-3)}

/* topic strip */
.topic-strip{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.topic-card{display:flex;gap:16px;padding:20px;align-items:center}
.topic-thumb{flex:0 0 96px;width:96px;height:96px;border-radius:16px;overflow:hidden;background:var(--bg-2);border:1px solid var(--line)}
.topic-thumb img{width:100%;height:100%;object-fit:cover;opacity:.9}
.topic-body{min-width:0}
.topic-body h3{font-size:15px;margin-bottom:4px}
.topic-body h3 a:hover{color:var(--brand)}
.topic-body p{font-size:13px;line-height:1.75;color:var(--text-3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* story */
.story{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;counter-reset:story}
.story-item{padding:20px;position:relative}
.story-item .badge-no{
  display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:8px;
  background:rgba(255,138,91,.14);color:#FFC0A6;font-size:12px;font-weight:800;margin-bottom:10px;
}
.story-item h3{font-size:14.5px;margin-bottom:6px}
.story-item p{font-size:13px;line-height:1.75}
.story-note{margin-top:16px;font-size:12.5px;color:var(--text-3)}

/* pricing */
.price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-items:stretch}
.price-card{padding:26px;display:flex;flex-direction:column;gap:14px;position:relative}
.price-card.recommend{border-color:rgba(255,138,91,.55);box-shadow:0 0 0 1px rgba(255,138,91,.18),0 18px 40px rgba(255,138,91,.12)}
.price-card .rec-tag{position:absolute;top:-12px;right:20px;padding:3px 12px;border-radius:999px;font-size:11px;background:linear-gradient(135deg,#FF8A5B,#FF6B8A);color:#1A0E08;font-weight:800}
.price-name{font-size:17px;font-weight:800}
.price-note{font-size:12.5px;color:var(--text-3)}
.price-list{display:flex;flex-direction:column;gap:9px}
.price-list li{font-size:13.5px;color:var(--text-2);display:flex;gap:9px;align-items:flex-start;line-height:1.7}
.price-list i{color:var(--mint);font-size:12px;margin-top:5px}
.price-foot{margin-top:auto;font-size:12px;color:var(--text-3)}

/* keyword wall */
.kw-wall{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.kw{
  padding:7px 16px;border-radius:999px;font-size:13px;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  transition:border-color 180ms ease,color 180ms ease,transform 180ms ease;
}
.kw:hover{border-color:var(--line-strong);color:#fff;transform:translateY(-2px)}
.kw-line{font-size:14px;color:var(--text-2);line-height:1.9}

/* concern */
.concern{padding:24px}
.concern h3{font-size:15.5px;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.concern h3 i{color:var(--brand);font-size:14px}
.concern p{font-size:13.5px;line-height:1.9}

/* changelog */
.log-list{display:flex;flex-direction:column;gap:0}
.log-item{display:flex;gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}
.log-item:last-child{border-bottom:0}
.log-when{flex:0 0 92px;font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums;padding-top:2px}
.log-body h3{font-size:14.5px;margin-bottom:2px}
.log-body p{font-size:13px;line-height:1.75}

/* faq */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.04);overflow:hidden;transition:border-color 180ms ease}
.faq-item[open]{border-color:var(--line-strong)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:16px 20px;min-height:48px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  font-size:15px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:rgba(255,255,255,.04)}
.faq-item summary:focus-visible{outline:2px solid var(--brand-2);outline-offset:-2px}
.faq-item summary .chev{color:var(--text-3);font-size:13px;transition:transform 200ms ease}
.faq-item[open] summary .chev{transform:rotate(180deg);color:var(--brand)}
.faq-item .faq-answer{padding:0 20px 18px;font-size:14px;line-height:1.9;color:var(--text-2)}

/* download */
.download-band{
  padding:36px;border-radius:var(--radius-lg);
  border:1px solid rgba(110,139,255,.32);
  background:
    radial-gradient(600px 240px at 12% 0%,rgba(110,139,255,.2),transparent 70%),
    radial-gradient(520px 220px at 92% 100%,rgba(255,138,91,.14),transparent 70%),
    rgba(16,26,51,.7);
  box-shadow:var(--shadow);
}
.dl-head{max-width:720px;margin-bottom:24px}
.dl-head h2{margin-bottom:10px}
.dl-head p{font-size:14.5px;line-height:1.9}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.dl-btn{
  display:flex;align-items:center;gap:14px;padding:18px 20px;border-radius:16px;
  border:1px solid var(--line);background:rgba(255,255,255,.05);
  transition:border-color 180ms ease,background 180ms ease,transform 180ms ease,box-shadow 180ms ease;
}
.dl-btn:hover{border-color:var(--line-strong);background:rgba(110,139,255,.14);transform:translateY(-2px);box-shadow:0 14px 30px rgba(3,7,20,.45)}
.dl-btn:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px}
.dl-btn .dl-ico{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-size:17px;
  background:linear-gradient(135deg,rgba(110,139,255,.34),rgba(155,123,255,.2));color:#D3DCFF;
}
.dl-btn .dl-text{display:flex;flex-direction:column;line-height:1.35;min-width:0}
.dl-btn .dl-text strong{font-size:14.5px;font-weight:700;color:var(--text)}
.dl-btn .dl-text small{font-size:11.5px;color:var(--text-3);letter-spacing:.03em}
.dl-tip{margin-top:16px;font-size:12.5px;color:var(--text-3);line-height:1.8}

/* footer */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:52px 0 26px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.35fr .8fr .95fr 1fr;gap:32px}
.foot-brand .logo{margin-bottom:14px}
.foot-brand p{font-size:13px;line-height:1.9;color:var(--text-3);max-width:32em}
.foot-col h4{font-size:13px;letter-spacing:.08em;color:var(--text);margin-bottom:14px;font-weight:700}
.foot-col ul{display:flex;flex-direction:column;gap:10px}
.foot-col a{font-size:13px;color:var(--text-3);transition:color 180ms ease}
.foot-col a:hover{color:var(--text)}
.foot-dl a{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.foot-dl a:hover{color:var(--brand)}
.foot-bottom{
  margin-top:34px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);line-height:1.8;
}

/* responsive */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:32px}
  .mech{grid-template-columns:repeat(2,minmax(0,1fr))}
  .mech-item::after{display:none}
  .news-layout{grid-template-columns:1fr}
  .side-panel{position:static}
  .story{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .price-grid{grid-template-columns:1fr}
}
@media (max-width:900px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-cta{margin-left:auto;padding:10px 16px;font-size:13px}
}
@media (max-width:860px){
  .g-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .g-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .g-2-1{grid-template-columns:1fr}
  .demo-wrap{grid-template-columns:1fr;gap:28px}
  .dl-grid{grid-template-columns:1fr}
  .post-list{grid-template-columns:1fr}
  .topic-strip{grid-template-columns:1fr}
}
@media (max-width:768px){
  .section{padding:48px 0}
  .timeline{display:flex;overflow-x:auto;gap:12px;padding-bottom:6px;scrollbar-width:none}
  .timeline::-webkit-scrollbar{display:none}
  .timeline > *{flex:0 0 78%}
  .hero{padding:44px 0 46px}
  .hero-actions .btn{flex:1 1 100%}
  .demo-shots{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
  .shot:nth-child(2){transform:none}
  .download-band{padding:24px}
  .safe-item{padding:16px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .g-2,.g-3,.g-4{grid-template-columns:1fr}
  .mech{grid-template-columns:1fr}
  .story{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .log-item{flex-direction:column;gap:4px}
  .log-when{flex:none}
  .topic-card{flex-direction:column;align-items:flex-start}
  .topic-thumb{width:100%;height:120px;flex:none}
  .hero-metrics li{font-size:12px}
  .nav{height:64px}
  .logo-mark{width:34px;height:34px;border-radius:10px;font-size:14px}
  .logo-name{font-size:13.5px}
  .logo-sub{font-size:10px}
  .dl-btn{padding:15px 16px}
}

/* roulang page: article */
:root{
  --bg-0:#070B1A;
  --bg-1:#0B1226;
  --bg-2:#101A33;
  --brand:#6E8BFF;
  --brand-2:#9B7BFF;
  --warm:#FF8A5B;
  --mint:#4FE3C1;
  --text:#EAF0FF;
  --text-2:#A6B2D4;
  --text-3:#6E7B9C;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(110,139,255,.45);
  --glass:rgba(255,255,255,.055);
  --radius:20px;
  --radius-lg:24px;
  --shadow:0 18px 44px rgba(3,7,20,.55);
  --shadow-btn:0 10px 26px rgba(110,139,255,.42);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
.section{padding:56px 0;position:relative}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:30px}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.12em;color:var(--brand);margin-bottom:12px}
.section-head h2{font-size:clamp(22px,2.8vw,30px);line-height:1.4}
.section-head p{margin-top:12px;font-size:15px;color:var(--text-2)}

/* header */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,26,.55);
  backdrop-filter:blur(14px) saturate(130%);
  -webkit-backdrop-filter:blur(14px) saturate(130%);
  border-bottom:1px solid transparent;
  transition:background 200ms ease,border-color 200ms ease;
}
.site-header.is-scrolled{background:rgba(7,11,26,.88);border-bottom-color:var(--line)}
.nav{display:flex;align-items:center;gap:16px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 8px 20px rgba(110,139,255,.38);
  color:#fff;font-size:16px;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-name{font-size:15px;font-weight:800;letter-spacing:.02em}
.logo-sub{font-size:11px;color:var(--text-3);letter-spacing:.08em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{position:relative;padding:8px 14px;border-radius:999px;font-size:14px;color:var(--text-2);transition:color 180ms ease,background 180ms ease}
.nav-link:hover,.nav-link:focus-visible{color:var(--text);background:rgba(255,255,255,.06)}
.nav-link.active{color:var(--text)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
}
.nav-cta{margin-left:10px;padding:11px 20px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  color:var(--text);align-items:center;justify-content:center;font-size:16px;
  transition:background 180ms ease,border-color 180ms ease;
}
.nav-toggle:hover{background:rgba(255,255,255,.07);border-color:var(--line-strong)}
.mobile-menu{display:none;border-top:1px solid var(--line);background:rgba(7,11,26,.98);padding:14px 20px 22px}
.mobile-menu.open{display:block}
.mobile-menu .nav-link{display:block;padding:13px 6px;border-radius:10px;font-size:15px}
.mobile-menu .btn{width:100%;margin-top:12px}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;white-space:nowrap;
  transition:transform 180ms ease,box-shadow 180ms ease,background 180ms ease,filter 180ms ease,border-color 180ms ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;box-shadow:var(--shadow-btn);
}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 14px 32px rgba(110,139,255,.52);transform:translateY(-1px)}
.btn-primary:active{transform:none;box-shadow:0 6px 16px rgba(110,139,255,.4)}
.btn-ghost{border-color:var(--line);color:var(--text);background:rgba(255,255,255,.02)}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:var(--line-strong);transform:translateY(-1px)}
.btn-ghost:active{transform:none}
.btn:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px}

/* glass + tags */
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius);
  backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:border-color 200ms ease,transform 200ms ease,box-shadow 200ms ease;
}
.card-hover:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:0 16px 36px rgba(3,7,20,.5)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12px;letter-spacing:.04em;
  border:1px solid rgba(110,139,255,.45);color:#C6D2FF;background:rgba(110,139,255,.12);
}
.tag-warm{border-color:rgba(255,138,91,.45);color:#FFC0A6;background:rgba(255,138,91,.12)}
.tag-mint{border-color:rgba(79,227,193,.4);color:#A9F4E4;background:rgba(79,227,193,.1)}

/* article head */
.article-head{padding:34px 0 26px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.article-head::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(760px 320px at 82% 0%,rgba(155,123,255,.18),transparent 62%);
  pointer-events:none;
}
.article-head .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px}
.crumb a{color:var(--text-3);transition:color 160ms ease}
.crumb a:hover,.crumb a:focus-visible{color:var(--text)}
.crumb .sep{color:rgba(255,255,255,.22)}
.crumb .current{color:var(--text-2);max-width:min(60ch,100%);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{font-size:clamp(24px,3.4vw,38px);line-height:1.32;max-width:26em}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px;font-size:13px;color:var(--text-3)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.22)}

/* layout */
.article-main{padding:40px 0 56px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 312px;gap:32px;align-items:start}
.article-panel{padding:30px;border-radius:var(--radius-lg)}
.cover{border-radius:16px;overflow:hidden;border:1px solid var(--line);margin:0 0 26px;background:var(--bg-2)}
.cover img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;opacity:.92}

/* prose */
.prose{font-size:16px;line-height:1.9;color:var(--text-2);max-width:72ch;word-break:break-word}
.prose p{margin:0 0 18px}
.prose h2{
  font-size:22px;line-height:1.5;color:var(--text);margin:36px 0 14px;
  padding-left:12px;border-left:3px solid transparent;
  border-image:linear-gradient(180deg,var(--brand),var(--brand-2)) 1;
}
.prose h3{font-size:18px;line-height:1.6;color:var(--text);margin:26px 0 12px}
.prose h4{font-size:16px;color:var(--text);margin:20px 0 10px}
.prose ul,.prose ol{margin:0 0 18px;padding-left:4px}
.prose ul li,.prose ol li{position:relative;padding-left:20px;margin:8px 0;color:var(--text-2)}
.prose ul li::before{
  content:"";position:absolute;left:2px;top:12px;width:6px;height:6px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
}
.prose ol{counter-reset:prose-ol}
.prose ol li{counter-increment:prose-ol}
.prose ol li::before{
  content:counter(prose-ol);position:absolute;left:0;top:2px;
  font-size:12px;font-weight:700;color:var(--brand);width:16px;
}
.prose blockquote{
  margin:22px 0;padding:14px 18px;border-left:3px solid var(--line-strong);
  background:var(--bg-2);border-radius:0 14px 14px 0;color:var(--text-2);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;transition:color 160ms ease}
.prose a:hover,.prose a:focus-visible{color:var(--warm)}
.prose strong{color:var(--text);font-weight:700}
.prose img{border-radius:16px;margin:20px 0 8px;border:1px solid var(--line);height:auto}
.prose hr{border:0;border-top:1px solid var(--line);margin:28px 0}
.prose table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14px}
.prose th,.prose td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.prose th{background:rgba(255,255,255,.04);color:var(--text)}

/* inline download strip */
.dl-strip{
  margin:30px 0 8px;padding:18px 20px;display:flex;flex-wrap:wrap;gap:14px;
  align-items:center;justify-content:space-between;border-radius:var(--radius);
}
.dl-strip .txt{font-size:14px;color:var(--text-2);max-width:40ch;line-height:1.7}
.dl-strip .txt b{color:var(--text);display:block;font-size:15px;margin-bottom:2px}
.dl-strip .btn{padding:10px 20px;font-size:14px}

/* empty */
.empty-state{padding:46px 20px;text-align:center;border-radius:var(--radius);border:1px dashed var(--line);background:rgba(255,255,255,.02)}
.empty-state i{font-size:26px;color:var(--text-3);margin-bottom:14px;display:block}
.empty-state p{font-size:15px;color:var(--text-2);margin-bottom:18px}

/* sidebar */
.side-stack{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px}
.side-card{padding:22px}
.side-card h3{font-size:16px;margin-bottom:14px;color:var(--text)}
.side-list li{display:flex;gap:10px;padding:10px 0;border-bottom:1px dashed var(--line);font-size:14px;color:var(--text-2);line-height:1.7}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list .num{
  flex:0 0 24px;height:24px;border-radius:8px;display:grid;place-items:center;
  font-size:12px;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2));
}
.side-card .btn{width:100%;margin-top:16px;font-size:14px}
.side-note{font-size:12px;color:var(--text-3);line-height:1.7;margin-top:10px}

/* cards grid */
.cards-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.play-card{padding:24px;border-radius:var(--radius-lg);display:flex;flex-direction:column;gap:10px;min-height:100%}
.play-card .ico{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-size:16px;color:#fff;
  background:linear-gradient(135deg,rgba(110,139,255,.85),rgba(155,123,255,.85));
  box-shadow:0 8px 18px rgba(110,139,255,.28);
}
.play-card h3{font-size:17px;color:var(--text)}
.play-card p{font-size:14px;color:var(--text-2);line-height:1.8}
.play-card .tag{align-self:flex-start;margin-top:2px}

/* notice */
.notice{
  margin-top:26px;padding:18px 20px;border-radius:var(--radius);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  font-size:13px;color:var(--text-3);line-height:1.8;
}
.notice i{color:var(--warm);margin-right:8px}

/* faq */
.faq-list{display:flex;flex-direction:column;gap:12px;margin-top:8px}
.faq-item{border:1px solid var(--line);border-radius:16px;background:var(--glass);overflow:hidden;transition:border-color 180ms ease}
.faq-item[open]{border-color:var(--line-strong)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:16px 18px;font-size:15px;font-weight:600;color:var(--text);
  display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:48px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .chev{color:var(--text-3);transition:transform 180ms ease;font-size:13px}
.faq-item[open] summary .chev{transform:rotate(180deg);color:var(--brand)}
.faq-item summary:hover{background:rgba(255,255,255,.04)}
.faq-item summary:focus-visible{outline:2px solid var(--brand-2);outline-offset:-2px}
.faq-item .ans{padding:0 18px 16px;font-size:14px;color:var(--text-2);line-height:1.85}

/* download */
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:24px}
.dl-card{
  padding:22px;border-radius:var(--radius);display:flex;flex-direction:column;gap:6px;
  align-items:flex-start;border:1px solid var(--line);background:var(--glass);
  transition:border-color 200ms ease,transform 200ms ease,box-shadow 200ms ease;
}
.dl-card:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:0 16px 36px rgba(3,7,20,.5)}
.dl-card .dl-ico{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-size:17px;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 8px 18px rgba(110,139,255,.3);
  margin-bottom:6px;
}
.dl-card strong{font-size:16px;color:var(--text)}
.dl-card span{font-size:12px;color:var(--text-3);letter-spacing:.03em}
.dl-card .go{margin-top:12px;font-size:13px;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.dl-note{margin-top:16px;font-size:12px;color:var(--text-3);line-height:1.8}

/* cta end */
.end-cta{
  margin-top:34px;padding:32px;border-radius:var(--radius-lg);position:relative;overflow:hidden;
  border:1px solid var(--line-strong);background:linear-gradient(135deg,rgba(110,139,255,.14),rgba(155,123,255,.10));
}
.end-cta h2{font-size:clamp(20px,2.4vw,26px);line-height:1.4;margin-bottom:10px}
.end-cta p{font-size:14px;color:var(--text-2);max-width:56ch}
.end-cta .btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}

/* footer */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:52px 0 26px}
.foot-grid{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));gap:30px}
.foot-brand p{margin-top:16px;font-size:13px;color:var(--text-3);line-height:1.9;max-width:38ch}
.foot-col h4{font-size:14px;margin-bottom:14px;color:var(--text)}
.foot-col ul li{margin:9px 0}
.foot-col ul a{font-size:13px;color:var(--text-3);transition:color 160ms ease}
.foot-col ul a:hover,.foot-col ul a:focus-visible{color:var(--brand)}
.foot-col ul a i{margin-right:7px;color:var(--text-3)}
.foot-dl ul a{color:var(--text-2)}
.foot-bottom{
  margin-top:36px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:var(--text-3);line-height:1.8;
}
.foot-bottom span{max-width:70ch}

/* responsive */
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .nav-cta{margin-left:auto}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .side-stack{position:static}
  .cards-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  .section{padding:44px 0}
  .container{padding:0 16px}
  .article-panel{padding:22px 18px}
  .article-main{padding:28px 0 44px}
  .dl-grid{grid-template-columns:minmax(0,1fr)}
  .cards-3{grid-template-columns:minmax(0,1fr)}
  .end-cta{padding:24px 18px}
  .end-cta .btns .btn{width:100%}
  .dl-strip{flex-direction:column;align-items:flex-start}
  .dl-strip .btn{width:100%}
  .prose h2{font-size:20px}
}
@media (max-width:520px){
  .nav-cta{padding:10px 14px;font-size:13px}
  .logo-name{font-size:14px}
  .logo-sub{font-size:10px}
  .foot-grid{grid-template-columns:minmax(0,1fr)}
  .crumb .current{white-space:normal}
  .article-title{font-size:22px}
}

/* roulang page: category1 */
:root{
  --bg-0:#070B1A;
  --bg-1:#0B1226;
  --bg-2:#101A33;
  --brand:#6E8BFF;
  --brand-2:#9B7BFF;
  --warm:#FF8A5B;
  --mint:#4FE3C1;
  --text:#EAF0FF;
  --text-2:#A6B2D4;
  --text-3:#6E7B9C;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(110,139,255,.45);
  --glass:rgba(255,255,255,.055);
  --radius:20px;
  --radius-lg:24px;
  --shadow:0 18px 44px rgba(3,7,20,.55);
  --shadow-btn:0 10px 26px rgba(110,139,255,.42);
  --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
.section{padding:56px 0;position:relative}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:32px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.12em;
  color:var(--brand);text-transform:uppercase;margin-bottom:12px;font-weight:600;
}
.section-title{font-size:clamp(22px,2.8vw,32px);line-height:1.3;font-weight:800;letter-spacing:-.01em;margin:0}
.section-head p{margin-top:14px;font-size:15px;line-height:1.9;color:var(--text-2)}
.text-2{color:var(--text-2)}
.text-3{color:var(--text-3)}

/* header */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,26,.55);
  backdrop-filter:blur(14px) saturate(130%);
  -webkit-backdrop-filter:blur(14px) saturate(130%);
  border-bottom:1px solid transparent;
  transition:background 200ms ease,border-color 200ms ease;
}
.site-header.is-scrolled{background:rgba(7,11,26,.90);border-bottom-color:var(--line)}
.nav{display:flex;align-items:center;gap:16px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 8px 20px rgba(110,139,255,.38);
  color:#fff;font-size:16px;flex-shrink:0;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-name{font-size:15px;font-weight:800;letter-spacing:.02em;white-space:nowrap}
.logo-sub{font-size:11px;color:var(--text-3);letter-spacing:.08em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:8px 14px;border-radius:999px;font-size:14px;color:var(--text-2);
  transition:color 180ms ease,background 180ms ease;white-space:nowrap;
}
.nav-link:hover,.nav-link:focus-visible{color:var(--text);background:rgba(255,255,255,.06)}
.nav-link.active{color:var(--text)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
}
.nav-cta{margin-left:10px;padding:11px 20px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  color:var(--text);align-items:center;justify-content:center;font-size:16px;margin-left:auto;
  transition:background 180ms ease,border-color 180ms ease;
}
.nav-toggle:hover{background:rgba(255,255,255,.07);border-color:var(--line-strong)}
.mobile-menu{display:none;border-top:1px solid var(--line);background:rgba(7,11,26,.98);padding:14px 20px 22px}
.mobile-menu.open{display:block}
.mobile-menu .nav-link{display:block;padding:13px 6px;border-radius:10px;font-size:15px}
.mobile-menu .nav-link.active::after{left:6px;right:auto;width:34px;bottom:6px}
.mobile-menu .btn{width:100%;margin-top:12px}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;white-space:nowrap;
  transition:transform 180ms ease,box-shadow 180ms ease,background 180ms ease,filter 180ms ease,border-color 180ms ease;
}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:var(--shadow-btn)}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 14px 32px rgba(110,139,255,.52);transform:translateY(-1px)}
.btn-primary:active{transform:none;box-shadow:0 6px 16px rgba(110,139,255,.4)}
.btn-ghost{border-color:var(--line);color:var(--text);background:rgba(255,255,255,.02)}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:var(--line-strong);transform:translateY(-1px)}
.btn-ghost:active{transform:none}
.btn:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px}

/* glass */
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius);
  backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:border-color 200ms ease,transform 200ms ease,box-shadow 200ms ease;
}
.card-hover:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:0 16px 36px rgba(3,7,20,.5)}
.card-hover:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px}

/* tags */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12px;letter-spacing:.04em;
  border:1px solid rgba(110,139,255,.45);color:#C6D2FF;background:rgba(110,139,255,.12);
  white-space:nowrap;
}
.tag-warm{border-color:rgba(255,138,91,.45);color:#FFC0A6;background:rgba(255,138,91,.12)}
.tag-mint{border-color:rgba(79,227,193,.4);color:#A9F4E4;background:rgba(79,227,193,.1)}

/* category hero */
.cat-hero{position:relative;overflow:hidden;padding:44px 0 48px;border-bottom:1px solid var(--line)}
.cat-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.2}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(760px 340px at 82% 8%,rgba(155,123,255,.22),transparent 68%),
             linear-gradient(180deg,rgba(7,11,26,.7),rgba(7,11,26,.97) 78%);
}
.cat-hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:34px;align-items:start}
.crumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3)}
.crumb a{transition:color 160ms ease}
.crumb a:hover{color:var(--text-2)}
.crumb .sep{color:rgba(255,255,255,.22)}
.cat-title{
  font-size:clamp(26px,3.6vw,40px);line-height:1.26;font-weight:800;letter-spacing:-.01em;
  margin:14px 0 16px;max-width:20em;
}
.cat-title .hl{background:linear-gradient(120deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.cat-lead{font-size:15.5px;line-height:1.95;color:var(--text-2);max-width:44em}
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.filter-chip{
  display:inline-flex;align-items:center;gap:6px;padding:7px 16px;border-radius:999px;
  font-size:13px;color:var(--text-2);border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:color 180ms ease,border-color 180ms ease,background 180ms ease,transform 180ms ease;
}
.filter-chip:hover,.filter-chip:focus-visible{color:var(--text);border-color:var(--line-strong);background:rgba(110,139,255,.12);transform:translateY(-1px)}
.filter-chip.is-on{color:#fff;background:linear-gradient(135deg,rgba(110,139,255,.32),rgba(155,123,255,.28));border-color:rgba(155,123,255,.5)}

/* tonight board */
.night-board{padding:22px;border-radius:var(--radius-lg)}
.board-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}
.board-title{font-size:16px;font-weight:800;margin:0;display:flex;align-items:center;gap:8px}
.board-list li{
  display:flex;gap:12px;align-items:flex-start;padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.08);
}
.board-list li:last-child{border-bottom:0}
.board-time{
  font-size:13px;font-variant-numeric:tabular-nums;color:var(--mint);font-weight:700;
  min-width:48px;padding-top:1px;
}
.board-info{min-width:0}
.board-info strong{display:block;font-size:14px;font-weight:700}
.board-info span{display:block;font-size:12.5px;color:var(--text-3);line-height:1.6}
.countdown-box{
  margin-top:14px;padding:14px 16px;border-radius:16px;background:rgba(79,227,193,.07);
  border:1px solid rgba(79,227,193,.24);
}
.countdown-label{font-size:12px;color:var(--text-3);letter-spacing:.06em}
.countdown-value{
  font-size:24px;font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:.04em;
  color:var(--mint);line-height:1.4;
}
.remind-btn{width:100%;margin-top:14px;padding:11px 18px;font-size:14px}
.remind-btn.is-on{background:rgba(79,227,193,.14);border:1px solid rgba(79,227,193,.45);color:#A9F4E4;box-shadow:none}
.remind-tip{margin-top:10px;font-size:12px;color:var(--text-3);line-height:1.7}

/* grids */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}

/* feature card */
.feature-card{padding:24px;min-width:0}
.icon-badge{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;font-size:17px;
  background:rgba(110,139,255,.14);border:1px solid rgba(110,139,255,.35);color:#C6D2FF;
}
.icon-badge.warm{background:rgba(255,138,91,.13);border-color:rgba(255,138,91,.36);color:#FFC0A6}
.icon-badge.mint{background:rgba(79,227,193,.12);border-color:rgba(79,227,193,.32);color:#A9F4E4}
.feature-card h3{font-size:18px;font-weight:750;margin:16px 0 10px;line-height:1.5}
.feature-card p{font-size:14.5px;color:var(--text-2);line-height:1.85}
.card-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}

/* time slots */
.slot-list{display:grid;gap:16px}
.slot{
  display:grid;grid-template-columns:132px minmax(0,1fr) 220px;gap:20px;align-items:center;
  padding:20px 22px;border-radius:var(--radius);
}
.slot-time{font-size:17px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--text)}
.slot-time span{display:block;font-size:12px;font-weight:500;color:var(--text-3);letter-spacing:.06em;margin-top:4px}
.slot-mid h3{font-size:16.5px;font-weight:750;margin:0 0 6px}
.slot-mid p{font-size:14px;color:var(--text-2);line-height:1.8}
.slot-side{font-size:13.5px;color:var(--text-2);line-height:1.8;border-left:1px solid var(--line);padding-left:18px}
.slot-side b{color:var(--mint);font-weight:700}

/* plan cards */
.plan-card{overflow:hidden;display:flex;flex-direction:column;min-width:0}
.plan-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-2);position:relative}
.plan-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease}
.plan-card:hover .plan-thumb img{transform:scale(1.04)}
.plan-body{padding:20px 22px 22px}
.plan-body h3{font-size:17.5px;font-weight:770;margin:0 0 10px}
.plan-body p{font-size:14px;color:var(--text-2);line-height:1.85}
.plan-note{margin-top:14px;font-size:13px;color:var(--text-3);line-height:1.75;border-top:1px dashed rgba(255,255,255,.1);padding-top:12px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;counter-reset:step}
.step-card{padding:24px;position:relative;min-width:0}
.step-num{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  font-size:14px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 8px 18px rgba(110,139,255,.35);
}
.step-card h3{font-size:16.5px;font-weight:750;margin:14px 0 8px}
.step-card p{font-size:14px;color:var(--text-2);line-height:1.85}

/* topic cloud */
.cloud{display:flex;flex-wrap:wrap;gap:12px}
.cloud-tag{
  display:inline-flex;align-items:center;gap:8px;padding:9px 18px;border-radius:999px;
  font-size:13.5px;color:var(--text-2);border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:color 180ms ease,border-color 180ms ease,background 180ms ease,transform 180ms ease;
}
.cloud-tag:hover,.cloud-tag:focus-visible{color:#fff;border-color:rgba(155,123,255,.55);background:rgba(110,139,255,.14);transform:translateY(-2px)}
.cloud-tag i{font-size:12px;color:var(--brand)}

/* posts */
.post-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.post-card{display:flex;gap:16px;padding:16px;align-items:stretch;min-width:0}
.post-thumb{
  width:154px;flex:0 0 154px;aspect-ratio:16/10;border-radius:14px;overflow:hidden;
  background:var(--bg-2);border:1px solid var(--line);
}
.post-thumb img{width:100%;height:100%;object-fit:cover}
.post-body{min-width:0;display:flex;flex-direction:column;justify-content:space-between;gap:8px}
.post-title{
  font-size:16px;font-weight:750;line-height:1.55;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-sum{
  font-size:13.5px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12px;color:var(--text-3)}
.post-meta .dot{width:3px;height:3px;border-radius:50%;background:rgba(255,255,255,.25)}
.empty-state{padding:44px 24px;text-align:center;border-radius:var(--radius)}
.empty-state i{font-size:26px;color:var(--text-3)}
.empty-state p{margin-top:12px;font-size:14.5px;color:var(--text-2)}

/* safety */
.safe-list{display:grid;gap:14px}
.safe-item{display:flex;gap:16px;padding:18px 20px;border-radius:16px;align-items:flex-start}
.safe-item h3{font-size:15.5px;font-weight:750;margin:0 0 6px}
.safe-item p{font-size:13.8px;color:var(--text-2);line-height:1.8}

/* faq */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{border-radius:16px;overflow:hidden}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;font-size:15.5px;font-weight:700;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  transition:background 180ms ease,color 180ms ease;min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:rgba(255,255,255,.04)}
.faq-item summary:focus-visible{outline:2px solid var(--brand-2);outline-offset:-3px;border-radius:16px}
.faq-item summary i{font-size:13px;color:var(--brand);transition:transform 220ms ease;flex-shrink:0}
.faq-item[open] summary i{transform:rotate(45deg)}
.faq-answer{padding:0 22px 20px;font-size:14.5px;color:var(--text-2);line-height:1.9}

/* download */
.dl-band{padding:30px;border-radius:var(--radius-lg);border:1px solid rgba(110,139,255,.32);position:relative;overflow:hidden}
.dl-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(600px 240px at 12% 0%,rgba(110,139,255,.18),transparent 70%);
  pointer-events:none;
}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:24px;position:relative;z-index:1}
.dl-btn{
  display:flex;align-items:center;gap:14px;padding:16px 18px;border-radius:16px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);min-width:0;
  transition:border-color 180ms ease,background 180ms ease,transform 180ms ease,box-shadow 180ms ease;
}
.dl-btn:hover,.dl-btn:focus-visible{
  border-color:rgba(155,123,255,.6);background:rgba(110,139,255,.13);
  transform:translateY(-2px);box-shadow:0 12px 28px rgba(3,7,20,.45);
}
.dl-btn i{font-size:20px;color:#C6D2FF;flex-shrink:0}
.dl-txt{min-width:0}
.dl-txt strong{display:block;font-size:14.5px;font-weight:700}
.dl-txt span{display:block;font-size:12px;color:var(--text-3);letter-spacing:.03em}
.dl-note{margin-top:16px;font-size:12.5px;color:var(--text-3);line-height:1.8;position:relative;z-index:1}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;position:relative;z-index:1}

/* footer */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:52px 0 26px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));gap:34px}
.foot-brand .logo{margin-bottom:14px}
.foot-brand p{font-size:13.5px;color:var(--text-2);line-height:1.9;max-width:34em}
.foot-col h4{font-size:14px;font-weight:750;margin:0 0 14px;letter-spacing:.02em}
.foot-col ul{display:grid;gap:10px}
.foot-col a{font-size:13.5px;color:var(--text-2);transition:color 160ms ease}
.foot-col a:hover,.foot-col a:focus-visible{color:var(--text)}
.foot-dl a{display:inline-flex;align-items:center;gap:8px}
.foot-dl i{font-size:13px;color:var(--brand)}
.foot-bottom{
  margin-top:34px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);line-height:1.8;
}

/* responsive */
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .cat-hero-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .slot{grid-template-columns:110px minmax(0,1fr);gap:14px}
  .slot-side{grid-column:1 / -1;border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:12px}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  .section{padding:48px 0}
  .cat-hero{padding:32px 0 38px}
  .grid-3,.grid-2,.post-grid,.steps,.dl-grid{grid-template-columns:minmax(0,1fr)}
  .post-card{flex-direction:column}
  .post-thumb{width:100%;flex:0 0 auto;aspect-ratio:16/9}
  .dl-band{padding:22px}
  .btn{width:100%}
  .nav-cta{display:none}
  .foot-grid{grid-template-columns:minmax(0,1fr)}
  .foot-bottom{flex-direction:column}
  .section-head{margin-bottom:26px}
  .slot{padding:18px}
}
@media (max-width:519px){
  .container{padding:0 16px}
  .logo-name{font-size:14px}
  .logo-sub{font-size:10px}
  .logo-mark{width:34px;height:34px;border-radius:10px;font-size:14px}
  .cat-title{font-size:clamp(24px,7vw,30px)}
  .countdown-value{font-size:21px}
  .cta-actions{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}