/* roulang page: index */
:root{
  --bg-0:#050C14;--bg-1:#081724;--bg-2:#0B2030;
  --surface:rgba(12,31,46,.62);--surface-solid:#0E2233;--surface-soft:rgba(18,42,58,.45);
  --line:rgba(125,211,252,.14);--line-strong:rgba(53,214,196,.34);
  --text:#E8F2F5;--muted:#93A9B6;--dim:#6F8794;
  --primary:#35D6C4;--primary-strong:#19B8A8;
  --accent:#F6B36B;--accent-strong:#E9964A;
  --danger:#F87171;--success:#5EEAD4;
  --glow:0 0 0 1px rgba(53,214,196,.32),0 8px 30px rgba(53,214,196,.16);
  --shadow:0 22px 60px rgba(0,0,0,.38);
  --radius-lg:20px;--radius-md:14px;--radius-sm:10px;
  --font-sans:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-serif:"Songti SC",STSong,"Noto Serif CJK SC",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--text);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(920px 520px at 10% -10%,rgba(53,214,196,.15),transparent 62%),
    radial-gradient(780px 520px at 98% 106%,rgba(246,179,107,.10),transparent 60%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.055;
  background-image:linear-gradient(rgba(125,211,252,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(125,211,252,.9) 1px,transparent 1px);
  background-size:64px 64px;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;text-underline-offset:3px;transition:color .2s ease}
a:hover{color:var(--accent)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;
}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
h1{font-family:var(--font-serif);font-size:clamp(2.4rem,4.2vw,3.5rem);line-height:1.18;letter-spacing:-.02em}
h2{font-family:var(--font-serif);font-size:clamp(1.7rem,2.6vw,2.3rem);line-height:1.3}
h3{font-size:1.15rem;line-height:1.5;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.layout{display:grid;grid-template-columns:248px minmax(0,1fr);gap:32px;align-items:start;padding:28px 0 0}
main{min-width:0}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  background:rgba(5,12,20,.82);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);transition:box-shadow .25s ease,background .25s ease;
}
.site-head.is-scrolled{box-shadow:0 12px 34px rgba(0,0,0,.45);background:rgba(5,12,20,.94)}
.head-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-seal{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(145deg,rgba(53,214,196,.24),rgba(25,184,168,.08));
  border:1px solid var(--line-strong);color:var(--primary);
  font-family:var(--font-serif);font-size:19px;font-weight:700;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14);
}
.brand-text{display:flex;align-items:center;gap:8px;font-family:var(--font-serif);font-size:19px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.brand-badge{
  font-family:var(--font-sans);font-size:11px;font-weight:600;letter-spacing:.06em;
  color:var(--accent);background:rgba(246,179,107,.12);
  border:1px solid rgba(246,179,107,.28);border-radius:999px;padding:2px 9px;line-height:1.6;
}
.main-nav{display:flex;align-items:center;gap:4px;flex:0 0 auto}
.main-nav>a,.nav-drop>a{
  display:inline-flex;align-items:center;gap:5px;padding:8px 12px;border-radius:var(--radius-sm);
  color:var(--muted);font-size:14.5px;font-weight:500;position:relative;transition:color .2s,background .2s;
}
.main-nav>a:hover,.nav-drop>a:hover{color:var(--text);background:var(--surface-soft)}
.main-nav>a.is-active,.nav-drop>a.is-active{color:var(--primary)}
.main-nav>a.is-active::after,.nav-drop>a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),rgba(53,214,196,0));
  box-shadow:0 0 12px rgba(53,214,196,.6);
}
.nav-drop{position:relative}
.nav-drop .caret{width:9px;height:9px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.75}
.drop-panel{
  position:absolute;top:calc(100% + 12px);left:0;min-width:238px;padding:10px;
  background:rgba(9,25,38,.96);border:1px solid var(--line);border-radius:var(--radius-md);
  box-shadow:var(--shadow);backdrop-filter:blur(18px);
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:all .2s ease;
}
.nav-drop:hover .drop-panel,.nav-drop:focus-within .drop-panel{opacity:1;visibility:visible;transform:translateY(0)}
.drop-panel a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 11px;border-radius:var(--radius-sm);
  color:var(--muted);font-size:14px;
}
.drop-panel a:hover{background:var(--surface-soft);color:var(--text)}
.drop-panel .dp-label{font-size:11.5px;letter-spacing:.08em;color:var(--dim);padding:6px 11px 4px}
.head-tools{display:flex;align-items:center;gap:10px;margin-left:auto}
.head-search{position:relative;width:330px}
.head-search input{
  width:100%;height:38px;padding:0 38px 0 36px;border-radius:999px;
  background:var(--surface-soft);border:1px solid var(--line);color:var(--text);
  font-size:13.5px;font-family:inherit;transition:border-color .2s,box-shadow .2s,background .2s;
}
.head-search input::placeholder{color:var(--dim)}
.head-search input:focus{
  outline:none;border-color:var(--primary);background:rgba(18,42,58,.72);
  box-shadow:0 0 0 3px rgba(53,214,196,.12);
}
.head-search .s-ico{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--dim)}
.head-search button{
  position:absolute;right:4px;top:50%;transform:translateY(-50%);width:30px;height:30px;border:0;border-radius:999px;
  background:transparent;color:var(--dim);display:grid;place-items:center;transition:color .2s,background .2s;
}
.head-search button:hover{color:var(--primary);background:rgba(53,214,196,.1)}
.switch-group{display:flex;gap:6px}
.pill-group{
  display:flex;align-items:center;padding:2px;border-radius:999px;
  background:var(--surface-soft);border:1px solid var(--line);
}
.pill-group button{
  border:0;background:transparent;color:var(--dim);font-size:12px;padding:4px 9px;border-radius:999px;transition:all .2s;line-height:1.6;
}
.pill-group button.is-on{background:rgba(53,214,196,.16);color:var(--primary);box-shadow:inset 0 0 0 1px rgba(53,214,196,.28)}
.pill-group button:hover{color:var(--text)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-sm);border:1px solid transparent;
  font-size:14.5px;font-weight:600;font-family:inherit;line-height:1;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn-sm{height:36px;padding:0 14px;font-size:13.5px;border-radius:9px}
.btn-primary{
  color:#04211F;
  background:linear-gradient(135deg,#4FE3D2,#19B8A8);
  border-color:rgba(255,255,255,.22);
  box-shadow:0 0 0 1px rgba(53,214,196,.28),0 10px 26px rgba(25,184,168,.24),inset 0 1px 0 rgba(255,255,255,.35);
}
.btn-primary:hover{color:#04211F;box-shadow:var(--glow),0 14px 34px rgba(25,184,168,.3);filter:brightness(1.05)}
.btn-ghost{
  color:var(--text);background:rgba(18,42,58,.5);border-color:var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.btn-ghost:hover{color:var(--text);border-color:var(--line-strong);background:var(--surface-soft)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;
  background:none;border:0;padding:0;transition:color .2s;
}
.btn-text .arw{transition:transform .2s ease}
.btn-text:hover{color:var(--accent)}
.btn-text:hover .arw{transform:translateX(3px)}

/* ---------- badges / chips ---------- */
.badge{
  display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:600;line-height:1.6;
  padding:3px 10px;border-radius:999px;white-space:nowrap;
}
.badge-teal{color:var(--primary);background:rgba(53,214,196,.12);border:1px solid rgba(53,214,196,.26)}
.badge-amber{color:var(--accent);background:rgba(246,179,107,.12);border:1px solid rgba(246,179,107,.26)}
.badge-dim{color:var(--muted);background:rgba(147,169,182,.1);border:1px solid var(--line)}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 13px;border-radius:999px;
  background:var(--surface-soft);border:1px solid var(--line);color:var(--muted);
  font-size:13px;transition:all .2s ease;
}
.chip:hover{color:var(--text);border-color:var(--line-strong);background:rgba(53,214,196,.1)}
.chip.is-on{color:var(--primary);border-color:rgba(53,214,196,.42);background:rgba(53,214,196,.14)}

/* ---------- sidebar ---------- */
.sidebar{position:relative}
.side-inner{
  position:sticky;top:88px;max-height:calc(100vh - 104px);overflow-y:auto;
  padding:18px 16px;border:1px solid var(--line);border-radius:var(--radius-lg);
  background:rgba(9,23,36,.6);backdrop-filter:blur(12px);
  scrollbar-width:thin;scrollbar-color:rgba(53,214,196,.28) transparent;
}
.side-inner::-webkit-scrollbar{width:6px}
.side-inner::-webkit-scrollbar-thumb{background:rgba(53,214,196,.24);border-radius:99px}
.side-title{
  font-size:12px;letter-spacing:.12em;color:var(--dim);font-weight:600;
  margin:0 0 10px;display:flex;align-items:center;gap:8px;
}
.side-title::before{content:"";width:3px;height:12px;border-radius:2px;background:var(--primary);opacity:.7}
.toc{display:flex;flex-direction:column;gap:2px;margin-bottom:20px}
.toc a{
  display:flex;gap:9px;align-items:baseline;padding:6px 9px;border-radius:8px;
  color:var(--muted);font-size:13.2px;line-height:1.55;border-left:2px solid transparent;transition:all .18s ease;
}
.toc a .num{font-variant-numeric:tabular-nums;font-size:11px;color:var(--dim);letter-spacing:.05em}
.toc a:hover{color:var(--text);background:var(--surface-soft)}
.toc a.is-current{color:var(--primary);background:rgba(53,214,196,.09);border-left-color:var(--primary);box-shadow:inset 2px 0 10px rgba(53,214,196,.16)}
.toc a.is-current .num{color:var(--primary)}
.hot-list{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.hot-list a{
  color:var(--muted);font-size:13px;line-height:1.6;display:block;padding-left:12px;position:relative;
}
.hot-list a::before{content:"";position:absolute;left:0;top:9px;width:4px;height:4px;border-radius:50%;background:var(--dim)}
.hot-list a:hover{color:var(--accent)}
.side-foot{border-top:1px solid var(--line);padding-top:12px}
.side-foot button{
  width:100%;height:36px;border-radius:9px;border:1px solid var(--line);background:var(--surface-soft);
  color:var(--muted);font-size:13px;transition:all .2s;
}
.side-foot button:hover{color:var(--primary);border-color:var(--line-strong)}

/* ---------- hero ---------- */
.hero{
  position:relative;border-radius:26px;overflow:hidden;
  border:1px solid var(--line);padding:44px 0 48px;margin-bottom:8px;
  background:linear-gradient(160deg,rgba(11,32,48,.9),rgba(5,12,20,.92));
}
.hero-bg{
  position:absolute;inset:0;background:url('/assets/images/a5b2db92c9a9dcc0.jpg') center/cover no-repeat;
  opacity:.2;filter:saturate(.85);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(5,12,20,.94) 8%,rgba(5,12,20,.72) 52%,rgba(53,214,196,.12) 100%);
}
.hero-inner{position:relative;z-index:1;padding:0 40px}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:start}
.hero-eyebrow{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.hero h1{font-size:clamp(2rem,3.5vw,3rem);margin-bottom:16px;letter-spacing:-.01em}
.hero h1 .hl{color:var(--primary)}
.hero-lead{color:var(--muted);font-size:15.5px;line-height:1.95;max-width:640px;margin-bottom:24px}
.search-form{
  display:grid;grid-template-columns:1.6fr 1fr 1fr auto;gap:10px;
  padding:12px;border-radius:var(--radius-md);
  background:rgba(9,25,38,.82);border:1px solid var(--line-strong);
  box-shadow:var(--glow);margin-bottom:14px;
}
.search-form .field{position:relative;display:flex;align-items:center}
.search-form input,.search-form select{
  width:100%;height:44px;padding:0 12px;border-radius:9px;font-family:inherit;font-size:13.5px;
  background:rgba(18,42,58,.6);border:1px solid var(--line);color:var(--text);transition:all .2s;
  appearance:none;-webkit-appearance:none;
}
.search-form input::placeholder{color:var(--dim)}
.search-form select{color:var(--muted)}
.search-form input:focus,.search-form select:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(53,214,196,.14);background:rgba(18,42,58,.9);
}
.quick-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}

.hero-panel{
  border-radius:var(--radius-lg);padding:18px;
  background:rgba(10,26,40,.55);border:1px solid rgba(126,230,220,.18);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.08);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
.panel-head h2{font-family:var(--font-sans);font-size:14.5px;font-weight:600;letter-spacing:.02em;color:var(--text)}
.hot-rows{display:flex;flex-direction:column;gap:2px;margin-bottom:12px}
.hot-row{
  display:flex;align-items:center;gap:10px;padding:8px 6px;border-radius:8px;color:var(--muted);
  font-size:13px;line-height:1.5;border-bottom:1px solid rgba(125,211,252,.08);transition:all .2s;
}
.hot-row:last-child{border-bottom:0}
.hot-row:hover{background:rgba(53,214,196,.07);color:var(--text)}
.hot-row .idx{font-variant-numeric:tabular-nums;font-size:11px;color:var(--dim);width:16px;flex:0 0 auto}
.hot-row .t{flex:1 1 auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hot-row .tm{font-size:11.5px;color:var(--dim);flex:0 0 auto;font-variant-numeric:tabular-nums}
.hot-empty{font-size:13px;color:var(--dim);padding:14px 4px}
.hero-figure{
  position:relative;border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--line-strong);
  aspect-ratio:4/3;margin-top:14px;background:linear-gradient(150deg,rgba(11,32,48,.9),rgba(53,214,196,.14));
}
.hero-figure img{width:100%;height:100%;object-fit:cover;opacity:.9}
.hero-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:10px 12px;font-size:12px;color:var(--text);
  background:linear-gradient(transparent,rgba(5,12,20,.9));
}
.stat-badges{display:flex;gap:8px;flex-wrap:wrap}

/* ---------- section shells ---------- */
.sec{padding:60px 0;scroll-margin-top:92px;position:relative}
.sec + .sec{border-top:1px solid rgba(125,211,252,.08)}
.sec--alt{
  background:linear-gradient(180deg,rgba(11,32,48,.5),rgba(5,12,20,0));
  border-radius:var(--radius-lg);padding:52px 32px;margin:12px 0;border:1px solid rgba(125,211,252,.08);
}
.sec-head{margin-bottom:28px;max-width:760px}
.sec-head .kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.1em;
  color:var(--primary);font-weight:600;margin-bottom:10px;
}
.sec-head .kicker .no{
  font-variant-numeric:tabular-nums;color:var(--dim);border:1px solid var(--line);
  border-radius:6px;padding:1px 7px;font-size:11px;letter-spacing:.06em;
}
.sec-head h2{margin-bottom:12px}
.sec-head p{color:var(--muted);font-size:15px;line-height:1.9}

/* ---------- cards ---------- */
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:20px;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.panel:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 18px 44px rgba(0,0,0,.34)}
.glass{
  background:rgba(10,26,40,.55);border:1px solid rgba(126,230,220,.18);border-radius:var(--radius-lg);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.08);
}
.icon-box{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;flex:0 0 auto;
  background:rgba(53,214,196,.1);border:1px solid rgba(53,214,196,.22);color:var(--primary);
}
.icon-box svg{width:19px;height:19px}

/* ---------- bento ---------- */
.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.bento-big{
  grid-column:span 2;grid-row:span 2;display:flex;flex-direction:column;justify-content:space-between;
  padding:26px;min-height:300px;
}
.bento-big h3{font-family:var(--font-serif);font-size:1.45rem;margin-bottom:10px}
.bento-big p{color:var(--muted);font-size:14px;line-height:1.9;margin-bottom:20px}
.flow-steps{display:flex;align-items:center;gap:6px;margin-bottom:22px;flex-wrap:wrap}
.flow-step{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--text);
  background:rgba(53,214,196,.1);border:1px solid rgba(53,214,196,.24);border-radius:999px;padding:4px 11px;
}
.flow-step .n{color:var(--primary);font-variant-numeric:tabular-nums;font-weight:700}
.flow-sep{color:var(--dim);font-size:12px}
.bento-sm h3{font-size:15px;margin:12px 0 6px}
.bento-sm p{color:var(--muted);font-size:13px;line-height:1.8}

/* ---------- channels ---------- */
.channel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.channel-card{
  display:flex;flex-direction:column;gap:8px;padding:18px;border-radius:var(--radius-md);
  background:var(--surface);border:1px solid var(--line);color:var(--text);transition:all .22s ease;
}
.channel-card:hover{transform:translateY(-4px);border-color:var(--line-strong);color:var(--text);box-shadow:0 16px 38px rgba(0,0,0,.32)}
.channel-card.wide{grid-column:span 2}
.channel-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.channel-top h3{font-size:15.5px}
.channel-card p{color:var(--muted);font-size:13px;line-height:1.75}
.channel-meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:8px}
.channel-meta .arw{color:var(--primary);transition:transform .2s}
.channel-card:hover .arw{transform:translateX(4px)}

/* ---------- filter ---------- */
.filter-grid{display:grid;grid-template-columns:0.85fr 1.15fr;gap:32px;align-items:start}
.filter-left{position:sticky;top:96px}
.filter-left h2{margin-bottom:12px}
.filter-left p{color:var(--muted);font-size:14.5px;line-height:1.9}
.filter-panel{padding:22px}
.filter-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:14px}
.filter-panel label{display:block;font-size:12px;color:var(--dim);letter-spacing:.06em;margin-bottom:6px}
.filter-panel input,.filter-panel select{
  width:100%;height:42px;padding:0 12px;border-radius:9px;background:rgba(18,42,58,.6);
  border:1px solid var(--line);color:var(--text);font-family:inherit;font-size:13.5px;appearance:none;
  transition:all .2s;
}
.filter-panel input:focus,.filter-panel select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(53,214,196,.13)}
.sort-tabs{display:flex;gap:4px;padding:3px;background:rgba(18,42,58,.55);border:1px solid var(--line);border-radius:999px;width:fit-content;margin-bottom:14px}
.sort-tabs button{border:0;background:transparent;color:var(--muted);font-size:13px;padding:5px 14px;border-radius:999px;transition:all .2s}
.sort-tabs button.is-on{background:rgba(53,214,196,.16);color:var(--primary)}
.skeleton-list{margin-top:16px;border-top:1px solid var(--line);padding-top:14px;display:flex;flex-direction:column;gap:10px}
.sk-row{display:flex;align-items:center;gap:10px}
.sk-bar{height:9px;border-radius:99px;background:linear-gradient(90deg,rgba(53,214,196,.22),rgba(53,214,196,.06));flex:1 1 auto}
.sk-bar.short{flex:0 0 60px;background:rgba(147,169,182,.14)}

/* ---------- timeline ---------- */
.tl{display:flex;flex-direction:column;gap:0}
.tl-item{display:grid;grid-template-columns:78px 1fr;gap:22px;padding:22px 0;border-top:1px solid rgba(125,211,252,.1);transition:background .2s}
.tl-item:first-child{border-top:0}
.tl-no{
  font-family:var(--font-serif);font-size:2.1rem;font-variant-numeric:tabular-nums;line-height:1;
  color:rgba(125,211,252,.22);transition:color .25s;letter-spacing:.02em;
}
.tl-item:hover .tl-no{color:var(--primary)}
.tl-body h3{margin-bottom:6px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.tl-body p{color:var(--muted);font-size:14px;line-height:1.85;margin-bottom:8px}

/* ---------- publish split ---------- */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:start}
.step-cards{display:flex;flex-direction:column;gap:12px}
.step-card{display:flex;gap:14px;align-items:flex-start;padding:18px}
.step-card .sn{
  flex:0 0 auto;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  font-size:13px;font-weight:700;color:var(--primary);background:rgba(53,214,196,.12);
  border:1px solid rgba(53,214,196,.26);font-variant-numeric:tabular-nums;
}
.step-card h3{font-size:15px;margin-bottom:4px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.step-card p{color:var(--muted);font-size:13.2px;line-height:1.8}
.mini-list{display:flex;flex-direction:column;gap:10px;margin-bottom:14px}
.mini-list a{
  display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:var(--radius-sm);
  background:var(--surface-soft);border:1px solid var(--line);color:var(--text);font-size:13.5px;transition:all .2s;
}
.mini-list a:hover{border-color:var(--line-strong);transform:translateX(3px);color:var(--text)}
.mini-list a .dot{width:6px;height:6px;border-radius:50%;background:var(--primary);flex:0 0 auto}

/* ---------- demo ---------- */
.demo-tabs{display:flex;gap:6px;margin-bottom:20px;flex-wrap:wrap}
.demo-tabs button{
  height:34px;padding:0 15px;border-radius:999px;border:1px solid var(--line);background:var(--surface-soft);
  color:var(--muted);font-size:13px;transition:all .2s;
}
.demo-tabs button.is-on{color:var(--primary);border-color:rgba(53,214,196,.42);background:rgba(53,214,196,.13)}
.demo-stage{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:start}
.frame{
  border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--line);
  background:var(--surface-solid);transition:all .25s ease;
}
.frame:nth-child(2){margin-top:24px}
.frame.is-active{border-color:var(--line-strong);box-shadow:var(--glow);transform:translateY(-4px)}
.frame-bar{display:flex;align-items:center;gap:5px;padding:8px 12px;border-bottom:1px solid var(--line);background:rgba(18,42,58,.6)}
.frame-bar i{width:8px;height:8px;border-radius:50%;background:rgba(147,169,182,.35);display:block}
.frame-bar span{margin-left:8px;font-size:11.5px;color:var(--dim)}
.frame-shot{aspect-ratio:16/10;background:linear-gradient(150deg,rgba(11,32,48,.95),rgba(53,214,196,.1));position:relative}
.frame-shot img{width:100%;height:100%;object-fit:cover;opacity:.88}
.frame-cap{padding:12px 14px;font-size:13px;color:var(--muted);line-height:1.7;border-top:1px solid var(--line)}

/* ---------- cases ---------- */
.case-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:20px;align-items:start}
.case-main{padding:0;overflow:hidden}
.case-main .case-img{aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line)}
.case-main .case-img img{width:100%;height:100%;object-fit:cover}
.case-main .case-body{padding:22px}
.case-main h3{font-family:var(--font-serif);font-size:1.35rem;margin:10px 0 8px}
.case-main p{color:var(--muted);font-size:14px;line-height:1.9;margin-bottom:16px}
.result-fields{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:16px}
.result-fields div{background:rgba(18,42,58,.5);border:1px solid var(--line);border-radius:var(--radius-sm);padding:10px}
.result-fields dt{font-size:11.5px;color:var(--dim);letter-spacing:.05em;margin-bottom:3px}
.result-fields dd{margin:0;font-size:13.5px;color:var(--text);font-weight:600}
.case-list{display:flex;flex-direction:column;gap:10px}
.case-row{
  display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:var(--radius-sm);
  background:var(--surface);border:1px solid var(--line);color:var(--text);transition:all .2s;
}
.case-row:hover{border-color:var(--line-strong);transform:translateX(3px);color:var(--text)}
.case-row .cr-body{min-width:0;flex:1 1 auto}
.case-row .cr-body strong{display:block;font-size:14px;font-weight:600;margin-bottom:2px}
.case-row .cr-body small{color:var(--dim);font-size:12px}
.case-row .arw{color:var(--primary);flex:0 0 auto}

/* ---------- topics ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.topic-card{
  display:flex;flex-direction:column;border-radius:var(--radius-md);overflow:hidden;
  background:var(--surface);border:1px solid var(--line);color:var(--text);transition:all .22s;
}
.topic-card:hover{transform:translateY(-4px);border-color:var(--line-strong);color:var(--text)}
.topic-card.span2{grid-column:span 2;flex-direction:row;align-items:stretch}
.topic-thumb{aspect-ratio:16/9;overflow:hidden;background:rgba(11,32,48,.8)}
.topic-card.span2 .topic-thumb{flex:0 0 42%;aspect-ratio:auto}
.topic-thumb img{width:100%;height:100%;object-fit:cover;opacity:.9}
.topic-body{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1 1 auto}
.topic-body h3{font-size:15.5px;line-height:1.55}
.topic-body p{color:var(--muted);font-size:13px;line-height:1.8}
.topic-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:8px;font-size:12px;color:var(--dim)}

/* ---------- plans ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;align-items:center}
.plan-card{padding:24px;display:flex;flex-direction:column;gap:12px}
.plan-card.featured{
  transform:scale(1.04);background:rgba(10,26,40,.6);border:1px solid var(--line-strong);
  backdrop-filter:blur(16px);box-shadow:var(--glow),var(--shadow);z-index:1;
}
.plan-card h3{font-size:16px;display:flex;align-items:center;justify-content:space-between;gap:8px}
.plan-price{display:flex;align-items:baseline;gap:6px;font-variant-numeric:tabular-nums}
.plan-price .num{font-family:var(--font-serif);font-size:2rem;color:var(--primary);line-height:1}
.plan-price .unit{font-size:12.5px;color:var(--dim)}
.plan-list{display:flex;flex-direction:column;gap:8px;font-size:13.2px;color:var(--muted);margin:4px 0 8px}
.plan-list li{display:flex;gap:8px;align-items:flex-start;line-height:1.7}
.plan-list li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--primary);margin-top:9px;flex:0 0 auto}
.plan-note{font-size:12px;color:var(--dim);line-height:1.7}

/* ---------- reviews ---------- */
.review-wall{columns:3;column-gap:16px}
.review-card{
  break-inside:avoid;margin-bottom:16px;padding:18px;border-radius:var(--radius-md);
  background:var(--surface);border:1px solid var(--line);transition:all .22s;
}
.review-card:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.review-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.avatar{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;flex:0 0 auto;
  background:linear-gradient(145deg,rgba(53,214,196,.22),rgba(25,184,168,.06));
  border:1px solid rgba(53,214,196,.24);color:var(--primary);font-size:14px;font-weight:700;
}
.review-head .who{font-size:13.5px;font-weight:600;color:var(--text);line-height:1.4}
.review-head .where{font-size:11.5px;color:var(--dim)}
.review-card p{font-size:13.2px;color:var(--muted);line-height:1.85}
.review-foot{display:flex;align-items:center;gap:8px;margin-top:10px;font-size:11.5px;color:var(--dim)}

/* ---------- stats ---------- */
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:var(--surface)}
.stat-cell{padding:24px 20px;border-left:1px solid var(--line);text-align:left}
.stat-cell:first-child{border-left:0}
.stat-cell .v{font-family:var(--font-serif);font-size:2rem;color:var(--text);line-height:1.1;font-variant-numeric:tabular-nums}
.stat-cell .l{font-size:12.5px;color:var(--muted);margin-top:6px}
.quote-bar{
  margin-top:16px;display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  padding:16px 20px;border-radius:var(--radius-md);background:var(--surface-soft);border:1px solid var(--line);
}
.quote-bar p{font-size:13.5px;color:var(--muted);flex:1 1 320px;line-height:1.8}

/* ---------- news (CMS) ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:24px}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.news-card{
  display:flex;gap:14px;padding:14px;border-radius:var(--radius-md);color:var(--text);
  background:var(--surface);border:1px solid var(--line);transition:all .22s ease;
}
.news-card:hover{transform:translateY(-3px);border-color:var(--line-strong);color:var(--text);box-shadow:0 16px 38px rgba(0,0,0,.3)}
.news-thumb{flex:0 0 140px;width:140px;aspect-ratio:16/11;border-radius:10px;overflow:hidden;background:rgba(11,32,48,.85);border:1px solid var(--line)}
.news-thumb img{width:100%;height:100%;object-fit:cover;opacity:.9}
.news-body{min-width:0;display:flex;flex-direction:column;gap:6px;flex:1 1 auto}
.news-title{font-size:14.5px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-desc{
  font-size:12.8px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:8px;margin-top:auto;font-size:11.5px;color:var(--dim);flex-wrap:wrap}
.news-meta .cat{color:var(--primary);background:rgba(53,214,196,.1);border:1px solid rgba(53,214,196,.22);border-radius:999px;padding:1px 8px}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:12px;
  padding:44px 20px;border:1px dashed var(--line);border-radius:var(--radius-md);background:var(--surface-soft);
  color:var(--muted);font-size:14px;text-align:center;
}
.empty-state svg{width:30px;height:30px;color:var(--dim)}
.news-more{display:flex;justify-content:center;margin-top:22px}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:32px;align-items:start}
.faq-left{position:sticky;top:96px}
.faq-left h2{margin-bottom:12px}
.faq-left p{color:var(--muted);font-size:14.5px;line-height:1.9}
.faq-list{display:flex;flex-direction:column;gap:10px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-md);background:var(--surface);overflow:hidden;transition:border-color .2s}
.faq-item.is-open{border-color:var(--line-strong)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:14px;width:100%;text-align:left;
  padding:16px 18px;background:none;border:0;color:var(--text);font-size:14.5px;font-weight:600;font-family:inherit;
  transition:color .2s;
}
.faq-q:hover{color:var(--primary)}
.faq-sign{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--primary);font-size:15px;line-height:1;transition:transform .22s ease;
}
.faq-item.is-open .faq-sign{transform:rotate(45deg);color:var(--accent);border-color:rgba(246,179,107,.5)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a .inner{padding:0 18px 16px;color:var(--muted);font-size:13.5px;line-height:1.9}

/* ---------- guide ---------- */
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:22px}
.rule-box{display:grid;grid-template-columns:1fr 1fr;gap:12px 24px;padding:22px}
.rule-box li{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);line-height:1.8}
.rule-box li .mk{flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-top:9px}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;padding:44px 36px;text-align:center;
  background:
    radial-gradient(560px 240px at 18% 0%,rgba(53,214,196,.22),transparent 65%),
    radial-gradient(460px 240px at 88% 100%,rgba(246,179,107,.16),transparent 62%),
    rgba(10,26,40,.72);
  border:1px solid rgba(126,230,220,.22);backdrop-filter:blur(16px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.08);
}
.cta-band h2{margin-bottom:12px}
.cta-band p{color:var(--muted);font-size:14.5px;line-height:1.9;max-width:640px;margin:0 auto 22px}
.cta-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.cta-small{margin-top:16px;font-size:12.5px;color:var(--dim)}

/* ---------- footer ---------- */
.site-foot{
  position:relative;z-index:1;margin-top:40px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(8,23,36,.7),rgba(5,12,20,.95));
}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding:52px 0 32px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.foot-desc{color:var(--muted);font-size:13px;line-height:1.85;max-width:320px}
.foot-col h4{font-size:13.5px;color:var(--text);margin-bottom:14px;letter-spacing:.04em}
.foot-col ul{display:flex;flex-direction:column;gap:9px}
.foot-col a{color:var(--muted);font-size:13px}
.foot-col a:hover{color:var(--primary)}
.foot-col button{
  background:none;border:0;padding:0;color:var(--muted);font-size:13px;font-family:inherit;text-align:left;transition:color .2s;
}
.foot-col button:hover{color:var(--primary)}
.foot-bottom{
  border-top:1px solid var(--line);padding:16px 0 26px;display:flex;justify-content:space-between;gap:12px;
  flex-wrap:wrap;font-size:12.5px;color:var(--dim);
}

/* ---------- drawer / mobile ---------- */
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface-soft);color:var(--text);place-items:center;
}
.nav-toggle svg{width:19px;height:19px}
.drawer-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.55);opacity:0;visibility:hidden;
  transition:all .25s ease;z-index:80;
}
.drawer-overlay.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:84vw;max-width:320px;z-index:90;
  background:rgba(8,20,32,.98);border-right:1px solid var(--line);
  transform:translateX(-100%);transition:transform .28s ease;padding:18px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:var(--surface-soft);
  color:var(--text);display:grid;place-items:center;
}
.drawer-search{position:relative;margin-bottom:16px}
.drawer-search input{
  width:100%;height:42px;padding:0 12px;border-radius:10px;background:var(--surface-soft);
  border:1px solid var(--line);color:var(--text);font-family:inherit;font-size:13.5px;
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:18px}
.drawer-nav a{
  display:block;padding:11px 12px;border-radius:10px;color:var(--muted);font-size:14.5px;
  border:1px solid transparent;transition:all .2s;
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--primary);background:rgba(53,214,196,.09);border-color:rgba(53,214,196,.22)}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .head-search{width:260px}
  .layout{grid-template-columns:220px minmax(0,1fr);gap:24px}
  .hero-inner{padding:0 30px}
  .plan-card.featured{transform:scale(1.02)}
}
@media (max-width:1023px){
  .layout{grid-template-columns:minmax(0,1fr);gap:0}
  .sidebar{display:none}
  .nav-toggle{display:grid}
  .main-nav,.head-search,.switch-group{display:none}
  .hero-grid{grid-template-columns:1fr;gap:26px}
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento-big{grid-column:span 2;grid-row:auto;min-height:auto}
  .channel-grid{grid-template-columns:repeat(2,1fr)}
  .channel-card.wide{grid-column:span 2}
  .filter-grid,.split,.faq-grid,.case-grid{grid-template-columns:1fr;gap:22px}
  .filter-left,.faq-left{position:static}
  .demo-stage{grid-template-columns:repeat(2,1fr)}
  .frame:nth-child(2){margin-top:0}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat-cell:nth-child(3){border-left:0}
  .stat-cell{border-top:1px solid var(--line)}
  .stat-cell:nth-child(-n+2){border-top:0}
  .review-wall{columns:2}
  .plan-grid{grid-template-columns:repeat(2,1fr)}
  .plan-card.featured{transform:none;order:-1;grid-column:span 2}
  .guide-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:767px){
  .wrap{padding:0 16px}
  .head-inner{height:64px;gap:12px}
  .brand-text{font-size:17px}
  .brand-badge{display:none}
  .hero{padding:32px 0 34px;border-radius:20px}
  .hero-inner{padding:0 18px}
  .search-form{grid-template-columns:1fr;padding:12px}
  .hero h1{font-size:clamp(2rem,7vw,2.5rem)}
  .sec{padding:44px 0}
  .sec--alt{padding:34px 16px}
  .bento,.channel-grid,.topic-grid,.news-grid,.demo-stage,.plan-grid,.guide-grid,.foot-grid{grid-template-columns:1fr}
  .topic-card.span2{flex-direction:column}
  .topic-card.span2 .topic-thumb{flex:0 0 auto;aspect-ratio:16/9}
  .topic-card.span2,.channel-card.wide,.bento-big{grid-column:span 1}
  .review-wall{columns:1}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .result-fields{grid-template-columns:1fr}
  .rule-box{grid-template-columns:1fr}
  .news-thumb{flex:0 0 104px;width:104px}
  .cta-band{padding:32px 18px;border-radius:20px}
  .demo-stage{grid-auto-flow:column;grid-auto-columns:82%;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px}
  .frame{scroll-snap-align:start}
  .tl-item{grid-template-columns:44px 1fr;gap:14px}
  .tl-no{font-size:1.5rem}
  .foot-grid{padding:36px 0 24px}
  .foot-bottom{flex-direction:column;gap:6px}
}
@media (max-width:479px){
  h1{font-size:clamp(2rem,8vw,2.2rem)}
  .hero-cta .btn,.cta-actions .btn{width:100%}
  .search-form input,.search-form select{height:42px}
  .news-card{flex-direction:row}
  .news-thumb{flex:0 0 88px;width:88px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
  .panel:hover,.channel-card:hover,.news-card:hover,.review-card:hover,.topic-card:hover{transform:none}
}

/* roulang page: article */
:root{
  --bg-0:#050C14;--bg-1:#081724;--bg-2:#0B2030;
  --surface:rgba(12,31,46,.62);--surface-solid:#0E2233;--surface-soft:rgba(18,42,58,.45);
  --line:rgba(125,211,252,.14);--line-strong:rgba(53,214,196,.34);
  --text:#E8F2F5;--muted:#93A9B6;--dim:#6F8794;
  --primary:#35D6C4;--primary-strong:#19B8A8;
  --accent:#F6B36B;--accent-strong:#E9964A;
  --danger:#F87171;--success:#5EEAD4;
  --glow:0 0 0 1px rgba(53,214,196,.32),0 8px 30px rgba(53,214,196,.16);
  --shadow:0 22px 60px rgba(0,0,0,.38);
  --radius-lg:20px;--radius-md:14px;--radius-sm:10px;
  --font-sans:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-serif:"Songti SC",STSong,"Noto Serif CJK SC",serif;
}
*,*::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:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(920px 520px at 8% -12%,rgba(53,214,196,.15),transparent 62%),
    radial-gradient(760px 500px at 99% 105%,rgba(246,179,107,.10),transparent 60%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(rgba(125,211,252,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(125,211,252,.9) 1px,transparent 1px);
  background-size:64px 64px;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;text-underline-offset:3px;transition:color .2s ease}
a:hover{color:var(--accent)}
button{font-family:inherit;cursor:pointer}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;
}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  background:rgba(5,12,20,.82);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);transition:box-shadow .25s ease,background .25s ease;
}
.site-head.is-scrolled{box-shadow:0 14px 40px rgba(0,0,0,.45);background:rgba(4,10,17,.92)}
.head-inner{display:flex;align-items:center;gap:14px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-seal{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(145deg,rgba(53,214,196,.24),rgba(25,184,168,.08));
  border:1px solid var(--line-strong);color:var(--primary);
  font-family:var(--font-serif);font-size:19px;font-weight:700;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14);
}
.brand-text{display:flex;align-items:center;gap:8px;font-family:var(--font-serif);font-size:19px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.brand-badge{
  font-family:var(--font-sans);font-size:11px;font-weight:600;letter-spacing:.06em;
  color:var(--accent);background:rgba(246,179,107,.12);
  border:1px solid rgba(246,179,107,.28);border-radius:999px;padding:2px 9px;line-height:1.6;
}
.main-nav{display:flex;align-items:center;gap:4px;flex:0 0 auto;margin-left:6px}
.main-nav>a,.nav-drop>a{
  display:inline-flex;align-items:center;gap:5px;padding:8px 12px;border-radius:var(--radius-sm);
  color:var(--muted);font-size:14.5px;font-weight:500;position:relative;transition:color .2s,background .2s;
}
.main-nav>a:hover,.nav-drop>a:hover{color:var(--text);background:var(--surface-soft)}
.main-nav>a.is-active,.nav-drop>a.is-active{color:var(--primary)}
.main-nav>a.is-active::after,.nav-drop>a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),rgba(53,214,196,0));
  box-shadow:0 0 12px rgba(53,214,196,.6);
}
.nav-drop{position:relative}
.nav-drop .caret{width:9px;height:9px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.75}
.drop-panel{
  position:absolute;top:calc(100% + 10px);left:0;min-width:236px;padding:10px;
  background:rgba(9,23,35,.96);border:1px solid var(--line);border-radius:var(--radius-md);
  box-shadow:var(--shadow);display:flex;flex-direction:column;gap:2px;
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:all .2s ease;backdrop-filter:blur(16px);
}
.nav-drop:hover .drop-panel,.nav-drop:focus-within .drop-panel{opacity:1;visibility:visible;transform:translateY(0)}
.dp-label{margin:6px 10px 4px;font-size:11.5px;letter-spacing:.08em;color:var(--dim)}
.drop-panel a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 11px;border-radius:var(--radius-sm);
  color:var(--muted);font-size:14px;
}
.drop-panel a:hover{background:var(--surface-soft);color:var(--text)}
.badge{display:inline-flex;align-items:center;gap:4px;font-size:11.5px;font-weight:600;padding:2px 9px;border-radius:999px;line-height:1.7;white-space:nowrap}
.badge-teal{color:var(--primary);background:rgba(53,214,196,.12);border:1px solid rgba(53,214,196,.3)}
.badge-amber{color:var(--accent);background:rgba(246,179,107,.12);border:1px solid rgba(246,179,107,.3)}
.badge-dim{color:var(--muted);background:var(--surface-soft);border:1px solid var(--line)}
.head-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
.head-search{position:relative;width:320px}
.head-search input{
  width:100%;height:38px;padding:0 38px 0 36px;border-radius:999px;
  background:var(--surface-soft);border:1px solid var(--line);color:var(--text);
  font-size:13.5px;font-family:inherit;transition:border-color .2s,box-shadow .2s,background .2s;
}
.head-search input::placeholder{color:var(--dim)}
.head-search input:focus{outline:none;border-color:var(--primary);background:rgba(18,42,58,.72);box-shadow:0 0 0 3px rgba(53,214,196,.12)}
.head-search .s-ico{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--dim)}
.head-search button{
  position:absolute;right:4px;top:50%;transform:translateY(-50%);width:30px;height:30px;border:0;border-radius:999px;
  background:transparent;color:var(--dim);display:grid;place-items:center;transition:color .2s,background .2s;
}
.head-search button:hover{color:var(--primary);background:rgba(53,214,196,.1)}
.pill-group{display:flex;align-items:center;padding:2px;border-radius:999px;background:var(--surface-soft);border:1px solid var(--line)}
.pill-group button{border:0;background:transparent;color:var(--dim);font-size:12px;padding:4px 9px;border-radius:999px;transition:all .2s;line-height:1.6}
.pill-group button.is-on{background:rgba(53,214,196,.16);color:var(--primary);box-shadow:inset 0 0 0 1px rgba(53,214,196,.28)}
.pill-group button:hover{color:var(--text)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-sm);border:1px solid transparent;
  font-size:14.5px;font-weight:600;font-family:inherit;line-height:1;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  color:#04211F;background:linear-gradient(135deg,#5FE7D8,#19B8A8);
  border-color:rgba(163,255,244,.45);box-shadow:var(--glow);
}
.btn-primary:hover{color:#04211F;background:linear-gradient(135deg,#7BF0E2,#25C9B8);box-shadow:0 0 0 1px rgba(53,214,196,.5),0 12px 36px rgba(53,214,196,.28)}
.btn-ghost{color:var(--text);background:rgba(18,42,58,.5);border-color:var(--line);backdrop-filter:blur(10px)}
.btn-ghost:hover{color:var(--text);border-color:var(--line-strong);background:var(--surface-soft)}
.btn-sm{height:38px;padding:0 15px;font-size:13.5px}
.btn-block{width:100%}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--radius-sm);border:1px solid var(--line);
  background:var(--surface-soft);color:var(--text);place-items:center;
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--primary)}

/* ---------- page shell ---------- */
.page-shell{
  position:relative;z-index:1;
  width:100%;max-width:1240px;margin:0 auto;padding:28px 24px 72px;
  display:grid;grid-template-columns:248px minmax(0,1fr);gap:32px;align-items:start;
}
.doc-side{
  position:sticky;top:88px;max-height:calc(100vh - 104px);overflow:auto;
  padding:18px 16px 16px;border-radius:var(--radius-lg);
  background:var(--surface-solid);border:1px solid var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.28);
  scrollbar-width:thin;scrollbar-color:rgba(125,211,252,.24) transparent;
}
.doc-side::-webkit-scrollbar{width:6px}
.doc-side::-webkit-scrollbar-thumb{background:rgba(125,211,252,.22);border-radius:999px}
.side-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:12px}
.side-title{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--muted)}
.side-close{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface-soft);color:var(--muted);place-items:center;
}
.toc-list{list-style:none;margin:0 0 18px;padding:0;display:flex;flex-direction:column;gap:2px}
.toc-list li a{
  display:block;padding:7px 10px 7px 12px;border-left:2px solid transparent;border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--muted);font-size:13.5px;line-height:1.6;transition:all .2s;
}
.toc-list li a:hover{color:var(--text);background:var(--surface-soft);border-left-color:rgba(53,214,196,.4)}
.toc-list li a.is-current{color:var(--primary);background:rgba(53,214,196,.08);border-left-color:var(--primary);box-shadow:-2px 0 12px rgba(53,214,196,.35)}
.toc-empty{font-size:13px;color:var(--dim);padding:6px 10px}
.side-block{border-top:1px solid var(--line);padding-top:14px;margin-top:6px}
.side-note{font-size:12.5px;line-height:1.75;color:var(--dim);margin:8px 0 0}
.side-search{position:relative;margin-top:12px}
.side-search input{
  width:100%;height:36px;padding:0 12px 0 32px;border-radius:var(--radius-sm);
  background:var(--surface-soft);border:1px solid var(--line);color:var(--text);font-size:13px;font-family:inherit;
  transition:border-color .2s,box-shadow .2s;
}
.side-search input::placeholder{color:var(--dim)}
.side-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(53,214,196,.12)}
.side-search svg{position:absolute;left:10px;top:50%;transform:translateY(-50%);width:14px;height:14px;color:var(--dim)}
.backtop{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;border:0;background:transparent;
  color:var(--primary);font-size:13px;padding:6px 0;transition:color .2s,gap .2s;
}
.backtop:hover{color:var(--accent);gap:10px}
.side-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:80;opacity:0;visibility:hidden;transition:opacity .2s;
}
.side-mask.is-open{opacity:1;visibility:visible}

/* ---------- article hero ---------- */
.art-hero{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  border:1px solid var(--line);background:
    linear-gradient(135deg,rgba(11,32,48,.94),rgba(8,23,36,.86)),
    url('/assets/images/a5b2db92c9a9dcc0.jpg') center/cover no-repeat;
  padding:30px 28px 28px;box-shadow:var(--shadow);
}
.art-hero::after{
  content:"";position:absolute;right:-60px;top:-70px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(246,179,107,.16),transparent 68%);pointer-events:none;
}
.crumbs{display:flex;align-items:center;gap:8px;flex-wrap:nowrap;overflow-x:auto;font-size:12.5px;color:var(--dim);padding-bottom:2px}
.crumbs a{color:var(--muted);white-space:nowrap}
.crumbs a:hover{color:var(--primary)}
.crumbs span.sep{color:rgba(111,135,148,.6)}
.crumbs .cur{color:var(--muted);white-space:nowrap;max-width:52ch;overflow:hidden;text-overflow:ellipsis}
.art-kicker{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:16px 0 12px}
.art-h1{
  font-family:var(--font-serif);font-size:clamp(1.6rem,3.2vw,2.35rem);line-height:1.34;
  font-weight:700;letter-spacing:-.01em;margin:0 0 14px;color:var(--text);max-width:22em;
}
.art-abstract{max-width:60ch;color:var(--muted);font-size:15px;line-height:1.85;margin:0 0 18px}
.art-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px 18px;font-size:13px;color:var(--dim)}
.art-meta em{font-style:normal;color:var(--muted);font-variant-numeric:tabular-nums}
.meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(111,135,148,.6)}
.art-cover{
  margin-top:22px;border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--line);
}
.art-cover img{width:100%;height:auto;aspect-ratio:16/7;object-fit:cover}

/* ---------- sections ---------- */
.art-flow{display:flex;flex-direction:column;gap:22px;margin-top:22px}
.panel{
  border-radius:var(--radius-lg);border:1px solid var(--line);
  background:var(--surface);padding:26px 26px 24px;
}
.panel-solid{background:var(--surface-solid)}
.panel-title{
  display:flex;align-items:center;gap:10px;margin:0 0 16px;
  font-family:var(--font-serif);font-size:1.18rem;font-weight:700;letter-spacing:.01em;color:var(--text);
}
.panel-title::before{
  content:"";width:3px;height:18px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),rgba(53,214,196,.15));box-shadow:0 0 12px rgba(53,214,196,.5);
}
.panel-title .num{
  margin-left:auto;font-family:var(--font-sans);font-size:12px;font-weight:500;color:var(--dim);
  font-variant-numeric:tabular-nums;letter-spacing:.1em;
}
.key-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.key-list li{position:relative;padding-left:20px;font-size:14.5px;line-height:1.75;color:var(--muted)}
.key-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px rgba(53,214,196,.55);
}
.key-list li b{color:var(--text);font-weight:600}

/* ---------- prose ---------- */
.article-body{max-width:760px;font-size:16px;line-height:1.95;color:#D5E4EA}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.1em}
.article-body h2{
  font-family:var(--font-serif);font-size:clamp(1.3rem,2.2vw,1.62rem);line-height:1.45;font-weight:700;
  margin:2.4em 0 1em;padding-left:14px;border-left:3px solid var(--primary);scroll-margin-top:96px;color:var(--text);
}
.article-body h3{font-size:1.1rem;font-weight:600;margin:1.8em 0 .6em;color:var(--text);scroll-margin-top:96px}
.article-body h4{font-size:1rem;font-weight:600;margin:1.4em 0 .5em;color:var(--text)}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.1em}
.article-body li{margin:.35em 0}
.article-body blockquote{
  margin:1.4em 0;padding:14px 18px;border-left:3px solid var(--primary);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  background:rgba(53,214,196,.06);color:var(--muted);font-size:15px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:1.4em 0;border:1px solid var(--line)}
.article-body figure{margin:1.4em 0}
.article-body figcaption{font-size:12.5px;color:var(--dim);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;font-size:14px;margin:1.4em 0;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;white-space:nowrap}
.article-body th{background:rgba(53,214,196,.07);color:var(--text);font-weight:600}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--accent)}
.article-body code{background:rgba(53,214,196,.1);border-radius:6px;padding:2px 6px;font-size:.92em;color:#9BE9DF}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}

.notice{
  border-radius:var(--radius-md);border:1px solid rgba(246,179,107,.3);border-left:3px solid var(--accent);
  background:rgba(246,179,107,.07);padding:16px 18px;font-size:14.5px;line-height:1.85;color:#EBD7C0;
}
.notice strong{color:var(--accent);font-weight:600}
.notice p{margin:0}

.empty-state{
  display:flex;flex-direction:column;align-items:flex-start;gap:12px;
  padding:34px 24px;border-radius:var(--radius-md);border:1px dashed var(--line);
  background:var(--surface-soft);color:var(--muted);
}
.empty-state .es-title{font-family:var(--font-serif);font-size:1.15rem;color:var(--text);font-weight:700}
.empty-state p{margin:0;font-size:14px}

/* ---------- related ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.rel-card{
  display:flex;flex-direction:column;gap:8px;padding:18px;border-radius:var(--radius-md);
  background:var(--surface-soft);border:1px solid var(--line);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.rel-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 16px 40px rgba(0,0,0,.35);background:rgba(18,42,58,.66)}
.rel-card .rc-tag{font-size:11.5px;color:var(--primary);letter-spacing:.04em}
.rel-card h3{margin:0;font-size:15px;line-height:1.6;font-weight:600;color:var(--text)}
.rel-card p{margin:0;font-size:13px;line-height:1.7;color:var(--dim);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card .rc-time{font-size:12px;color:var(--dim);margin-top:auto;font-variant-numeric:tabular-nums}
.rel-card:hover h3{color:var(--primary)}

/* ---------- prev/next ---------- */
.dir-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.dir-card{
  padding:18px;border-radius:var(--radius-md);border:1px solid var(--line);background:var(--surface-soft);
  transition:border-color .2s,background .2s,transform .2s;
}
.dir-card:hover{border-color:var(--line-strong);background:rgba(18,42,58,.7);transform:translateY(-3px)}
.dir-card .dc-label{display:block;font-size:12px;color:var(--dim);letter-spacing:.08em;margin-bottom:6px}
.dir-card .dc-text{font-size:14.5px;color:var(--text);line-height:1.7}
.dir-card .dc-arrow{display:inline-block;color:var(--primary);transition:transform .2s}
.dir-card:hover .dc-arrow{transform:translateX(3px);color:var(--accent)}
.back-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px}
.text-link:hover{color:var(--accent)}
.text-link svg{transition:transform .2s}
.text-link:hover svg{transform:translateX(2px)}

/* ---------- source & disclaimer ---------- */
.src-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:20px;align-items:start}
.author-card{display:flex;align-items:flex-start;gap:14px}
.author-avatar{
  width:52px;height:52px;flex:0 0 auto;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(145deg,rgba(53,214,196,.22),rgba(25,184,168,.06));
  border:1px solid var(--line-strong);color:var(--primary);
  font-family:var(--font-serif);font-size:22px;font-weight:700;
}
.author-name{font-size:15px;font-weight:600;color:var(--text);margin:0 0 4px}
.author-role{font-size:13px;color:var(--muted);margin:0 0 6px}
.author-time{font-size:12.5px;color:var(--dim);font-variant-numeric:tabular-nums}
.legal-block{font-size:13px;line-height:1.9;color:var(--dim)}
.legal-block p{margin:0 0 .7em}
.legal-block p:last-child{margin-bottom:0}

/* ---------- form ---------- */
.form-grid{display:grid;gap:12px;max-width:520px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.field input,.field textarea{
  width:100%;padding:11px 13px;border-radius:var(--radius-sm);
  background:rgba(8,23,36,.7);border:1px solid var(--line);color:var(--text);
  font-size:14px;font-family:inherit;line-height:1.6;transition:border-color .2s,box-shadow .2s,background .2s;
}
.field input::placeholder,.field textarea::placeholder{color:var(--dim)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);background:rgba(8,23,36,.95);box-shadow:0 0 0 3px rgba(53,214,196,.12);
}
.field textarea{min-height:104px;resize:vertical}
.form-hint{font-size:12.5px;color:var(--dim);margin:0}
.discuss-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:24px;align-items:start}
.discuss-note{font-size:14px;line-height:1.85;color:var(--muted);margin:0 0 12px}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  padding:32px 28px;border:1px solid var(--line-strong);
  background:
    radial-gradient(520px 220px at 12% 0%,rgba(53,214,196,.2),transparent 66%),
    radial-gradient(400px 200px at 96% 110%,rgba(246,179,107,.14),transparent 68%),
    rgba(10,26,40,.78);
  backdrop-filter:blur(16px);box-shadow:var(--glow);
  display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;
}
.cta-band h2{margin:0 0 8px;font-family:var(--font-serif);font-size:clamp(1.25rem,2.2vw,1.6rem);font-weight:700;color:var(--text)}
.cta-band p{margin:0;font-size:14px;line-height:1.8;color:var(--muted);max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:10px}
.cta-foot{width:100%;font-size:12.5px;color:var(--dim);margin-top:2px}

/* ---------- footer ---------- */
.site-foot{
  position:relative;z-index:1;margin-top:24px;padding:52px 0 26px;
  border-top:1px solid transparent;
  background:linear-gradient(180deg,rgba(5,12,20,0),rgba(6,16,26,.9) 18%,rgba(5,12,20,1));
}
.site-foot::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,214,196,.42),rgba(246,179,107,.3),transparent);
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.foot-desc{font-size:13.5px;line-height:1.9;color:var(--dim);margin:0;max-width:36ch}
.foot-col h4{margin:0 0 12px;font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--text)}
.foot-col ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.foot-col a,.foot-col button{
  color:var(--muted);font-size:13.5px;background:none;border:0;padding:0;text-align:left;transition:color .2s;
}
.foot-col a:hover,.foot-col button:hover{color:var(--primary)}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  margin-top:34px;padding-top:18px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--dim);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .head-search{width:250px}
  .main-nav>a,.nav-drop>a{padding:8px 10px;font-size:14px}
}
@media (max-width:1023px){
  .main-nav,.head-search,.head-tools .pill-group{display:none}
  .nav-toggle{display:grid}
  .head-inner{height:64px;gap:10px}
  .brand-text{font-size:17px}
  .page-shell{grid-template-columns:minmax(0,1fr);padding:20px 20px 60px;gap:0}
  .doc-side{
    position:fixed;left:0;top:0;bottom:0;width:84vw;max-width:320px;z-index:90;
    max-height:none;border-radius:0 var(--radius-lg) var(--radius-lg) 0;
    transform:translateX(-102%);transition:transform .22s ease;padding:20px 18px;
  }
  .doc-side.is-open{transform:translateX(0)}
  .side-close{display:grid}
  .cta-band{padding:26px 22px}
  .discuss-grid,.src-grid{grid-template-columns:minmax(0,1fr);gap:20px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .art-hero{padding:22px 18px 20px}
  .panel{padding:20px 18px}
  .rel-grid,.dir-grid{grid-template-columns:minmax(0,1fr)}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
  .art-cover img{aspect-ratio:16/9}
  .art-meta{font-size:12.5px;gap:8px 14px}
  .article-body{font-size:15.5px;line-height:1.9}
  .cta-actions .btn{flex:1 1 100%}
}
@media (max-width:520px){
  .wrap{padding:0 16px}
  .page-shell{padding:14px 16px 48px}
  .brand-text{font-size:16px}
  .brand-badge{display:none}
  .foot-grid{grid-template-columns:minmax(0,1fr)}
  .art-h1{font-size:1.5rem;line-height:1.4}
  .art-abstract{font-size:14px}
  .btn{height:44px;font-size:14px}
  .head-tools .btn-primary{padding:0 14px;font-size:13.5px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .rel-card:hover,.dir-card:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --bg-0:#050C14;--bg-1:#081724;--bg-2:#0B2030;
  --surface:rgba(12,31,46,.62);--surface-solid:#0E2233;--surface-soft:rgba(18,42,58,.45);
  --line:rgba(125,211,252,.14);--line-strong:rgba(53,214,196,.34);
  --text:#E8F2F5;--muted:#93A9B6;--dim:#6F8794;
  --primary:#35D6C4;--primary-strong:#19B8A8;
  --accent:#F6B36B;--accent-strong:#E9964A;
  --danger:#F87171;--success:#5EEAD4;
  --glow:0 0 0 1px rgba(53,214,196,.32),0 8px 30px rgba(53,214,196,.16);
  --shadow:0 22px 60px rgba(0,0,0,.38);
  --radius-lg:20px;--radius-md:14px;--radius-sm:10px;
  --font-sans:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-serif:"Songti SC",STSong,"Noto Serif CJK SC",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;background:var(--bg-0);color:var(--text);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(920px 520px at 10% -10%,rgba(53,214,196,.15),transparent 62%),
    radial-gradient(780px 520px at 98% 106%,rgba(246,179,107,.10),transparent 60%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.055;
  background-image:linear-gradient(rgba(125,211,252,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(125,211,252,.9) 1px,transparent 1px);
  background-size:64px 64px;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;text-underline-offset:3px;transition:color .2s ease}
a:hover{color:var(--accent)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;
}
button{font-family:inherit;cursor:pointer}
main{min-width:0}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  background:rgba(5,12,20,.82);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);transition:box-shadow .25s ease,background .25s ease;
}
.site-head.is-scrolled{box-shadow:0 14px 36px rgba(0,0,0,.42);background:rgba(4,10,17,.92)}
.head-inner{max-width:1240px;margin:0 auto;padding:0 24px;height:72px;display:flex;align-items:center;gap:16px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-seal{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(145deg,rgba(53,214,196,.24),rgba(25,184,168,.08));
  border:1px solid var(--line-strong);color:var(--primary);
  font-family:var(--font-serif);font-size:19px;font-weight:700;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14);
}
.brand-text{display:flex;align-items:center;gap:8px;font-family:var(--font-serif);font-size:19px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.brand-badge{
  font-family:var(--font-sans);font-size:11px;font-weight:600;letter-spacing:.06em;
  color:var(--accent);background:rgba(246,179,107,.12);
  border:1px solid rgba(246,179,107,.28);border-radius:999px;padding:2px 9px;line-height:1.6;
}
.main-nav{display:flex;align-items:center;gap:4px;flex:0 0 auto}
.main-nav>a,.nav-drop>a{
  display:inline-flex;align-items:center;gap:5px;padding:8px 12px;border-radius:var(--radius-sm);
  color:var(--muted);font-size:14.5px;font-weight:500;position:relative;transition:color .2s,background .2s;
}
.main-nav>a:hover,.nav-drop>a:hover{color:var(--text);background:var(--surface-soft)}
.main-nav>a.is-active,.nav-drop>a.is-active{color:var(--primary)}
.main-nav>a.is-active::after,.nav-drop>a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),rgba(53,214,196,0));
  box-shadow:0 0 12px rgba(53,214,196,.6);
}
.nav-drop{position:relative}
.nav-drop .caret{width:9px;height:9px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.75}
.nav-drop:hover .drop-panel,.nav-drop:focus-within .drop-panel{opacity:1;visibility:visible;transform:translateY(0)}
.drop-panel{
  position:absolute;top:calc(100% + 10px);left:0;min-width:240px;padding:10px;border-radius:var(--radius-md);
  background:rgba(8,23,36,.97);border:1px solid var(--line-strong);box-shadow:var(--shadow);
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:opacity .2s ease,transform .2s ease,visibility .2s;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.dp-label{font-size:11px;letter-spacing:.08em;color:var(--dim);margin:6px 8px 4px}
.drop-panel a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 11px;border-radius:var(--radius-sm);color:var(--muted);font-size:14px}
.drop-panel a:hover{background:var(--surface-soft);color:var(--text)}
.badge{display:inline-flex;align-items:center;gap:5px;border-radius:999px;padding:2px 9px;font-size:11.5px;line-height:1.7;border:1px solid var(--line);color:var(--muted);background:var(--surface-soft)}
.badge-teal{color:var(--primary);background:rgba(53,214,196,.12);border-color:rgba(53,214,196,.28)}
.badge-amber{color:var(--accent);background:rgba(246,179,107,.12);border-color:rgba(246,179,107,.3)}
.head-tools{display:flex;align-items:center;gap:10px;margin-left:auto}
.head-search{position:relative;width:300px}
.head-search input{
  width:100%;height:38px;padding:0 38px 0 36px;border-radius:999px;
  background:var(--surface-soft);border:1px solid var(--line);color:var(--text);
  font-size:13.5px;font-family:inherit;transition:border-color .2s,box-shadow .2s,background .2s;
}
.head-search input::placeholder{color:var(--dim)}
.head-search input:focus{outline:none;border-color:var(--primary);background:rgba(18,42,58,.72);box-shadow:0 0 0 3px rgba(53,214,196,.12)}
.head-search .s-ico{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--dim)}
.head-search button{
  position:absolute;right:4px;top:50%;transform:translateY(-50%);width:30px;height:30px;border:0;border-radius:999px;
  background:transparent;color:var(--dim);display:grid;place-items:center;transition:color .2s,background .2s;font-size:15px;
}
.head-search button:hover{color:var(--primary);background:rgba(53,214,196,.1)}
.pill-group{display:flex;align-items:center;padding:2px;border-radius:999px;background:var(--surface-soft);border:1px solid var(--line)}
.pill-group button{border:0;background:transparent;color:var(--dim);font-size:12px;padding:4px 9px;border-radius:999px;transition:all .2s;line-height:1.6}
.pill-group button.is-on{background:rgba(53,214,196,.16);color:var(--primary);box-shadow:inset 0 0 0 1px rgba(53,214,196,.28)}
.pill-group button:hover{color:var(--text)}
.menu-btn{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--surface-soft);color:var(--text);place-items:center}
.menu-btn:hover{border-color:var(--line-strong);color:var(--primary)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-sm);border:1px solid transparent;
  font-size:14.5px;font-weight:600;font-family:inherit;line-height:1;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-strong));color:#03171A;
  border-color:rgba(255,255,255,.2);box-shadow:var(--glow);
}
.btn-primary:hover{color:#03171A;filter:brightness(1.08);box-shadow:0 0 0 1px rgba(53,214,196,.5),0 12px 34px rgba(53,214,196,.28)}
.btn-ghost{background:var(--surface-soft);border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--line-strong);background:rgba(18,42,58,.7);color:var(--text)}
.btn-soft{background:rgba(246,179,107,.12);border-color:rgba(246,179,107,.32);color:var(--accent)}
.btn-soft:hover{color:var(--accent-strong);background:rgba(246,179,107,.18)}
.btn-sm{height:38px;padding:0 15px;font-size:13.5px;border-radius:9px}
.btn-block{width:100%}

/* ---------- shell & sidebar ---------- */
.shell{max-width:1240px;margin:0 auto;padding:26px 24px 72px;display:grid;grid-template-columns:248px minmax(0,1fr);gap:32px;position:relative;z-index:1}
.doc-side{align-self:start;position:sticky;top:88px;max-height:calc(100vh - 104px);overflow-y:auto;display:grid;gap:14px;padding-right:2px}
.doc-side::-webkit-scrollbar{width:6px}
.doc-side::-webkit-scrollbar-thumb{background:rgba(125,211,252,.16);border-radius:99px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);padding:16px}
.side-label{font-size:11.5px;letter-spacing:.1em;color:var(--dim);margin:0 0 10px;font-weight:600}
.side-nav{display:grid;gap:2px}
.side-nav a{
  display:flex;align-items:center;gap:10px;padding:7px 10px;border-radius:8px;font-size:13.5px;color:var(--muted);
  border-left:2px solid transparent;transition:all .2s;
}
.side-nav a span{font-size:11px;color:var(--dim);font-variant-numeric:tabular-nums}
.side-nav a:hover{color:var(--text);background:var(--surface-soft)}
.side-nav a.is-on{color:var(--primary);background:rgba(53,214,196,.09);border-left-color:var(--primary);box-shadow:-2px 0 12px rgba(53,214,196,.28)}
.side-nav a.is-on span{color:var(--primary)}
.side-search{display:flex;gap:8px}
.side-search input{
  flex:1 1 auto;min-width:0;height:38px;padding:0 12px;border-radius:9px;background:rgba(5,12,20,.6);
  border:1px solid var(--line);color:var(--text);font-size:13px;font-family:inherit;transition:border-color .2s,box-shadow .2s;
}
.side-search input::placeholder{color:var(--dim)}
.side-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(53,214,196,.12)}
.side-tip{font-size:12.5px;color:var(--dim);line-height:1.8;margin:10px 0 0}
.backtop{
  width:100%;height:40px;border-radius:9px;border:1px solid var(--line);background:var(--surface-soft);
  color:var(--muted);font-size:13px;transition:all .2s;
}
.backtop:hover{color:var(--primary);border-color:var(--line-strong);background:rgba(53,214,196,.08)}

/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:80;opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:84vw;max-width:320px;z-index:90;
  background:linear-gradient(180deg,#081724,#050C14);border-right:1px solid var(--line-strong);
  transform:translateX(-102%);transition:transform .24s ease;display:flex;flex-direction:column;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px;border-bottom:1px solid var(--line);font-family:var(--font-serif);font-size:15px;color:var(--text)}
.drawer-close{width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:var(--surface-soft);color:var(--text);font-size:18px}
.drawer-close:hover{color:var(--primary);border-color:var(--line-strong)}
.drawer-body{padding:16px;overflow-y:auto;display:grid;gap:16px}
.drawer-body .side-nav a{padding:10px 10px;font-size:14px}

/* ---------- main sections ---------- */
main{display:block}
main section{margin-bottom:26px}
main section:last-child{margin-bottom:0}
.panel{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px;box-shadow:0 12px 34px rgba(0,0,0,.22);
}
.panel-alt{background:rgba(18,42,58,.34)}
.sec-head{margin-bottom:18px}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:18px}
.sec-title{
  font-family:var(--font-serif);font-size:clamp(1.25rem,2.2vw,1.6rem);font-weight:700;line-height:1.35;
  margin:0 0 8px;letter-spacing:-.01em;color:var(--text);
}
.sec-desc{color:var(--muted);font-size:14px;line-height:1.85;margin:0;max-width:640px}
.sec-meta{font-size:12.5px;color:var(--dim);font-variant-numeric:tabular-nums;white-space:nowrap}

/* ---------- category head ---------- */
.cat-head{
  overflow:hidden;padding:26px 28px 24px;
  background:
    linear-gradient(120deg,rgba(5,12,20,.9),rgba(11,32,48,.86)),
    url("/assets/images/a5b2db92c9a9dcc0.jpg") center/cover no-repeat;
}
.cat-head::after{
  content:"";position:absolute;right:-60px;top:-70px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,214,196,.22),transparent 68%);pointer-events:none;
}
.crumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:12.5px;color:var(--dim);margin-bottom:14px;position:relative;z-index:1}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--primary)}
.crumbs [aria-current]{color:var(--text)}
.page-title{
  font-family:var(--font-serif);font-size:clamp(1.6rem,3vw,2.3rem);line-height:1.28;letter-spacing:-.02em;
  margin:0 0 10px;font-weight:700;color:var(--text);position:relative;z-index:1;
}
.page-sub{color:var(--muted);font-size:14px;line-height:1.9;max-width:820px;margin:0 0 14px;position:relative;z-index:1}
.head-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;position:relative;z-index:1}
.filter-bar{
  display:grid;grid-template-columns:1.3fr 1fr 1fr auto auto;gap:10px;align-items:end;
  padding:14px;border-radius:var(--radius-md);background:rgba(5,12,20,.62);border:1px solid var(--line);
  position:relative;z-index:1;
}
.fb-field{display:grid;gap:5px;min-width:0}
.fb-field label{font-size:11.5px;color:var(--dim);letter-spacing:.04em}
.fb-field input,.fb-field select{
  height:38px;padding:0 12px;border-radius:9px;background:rgba(18,42,58,.6);border:1px solid var(--line);
  color:var(--text);font-size:13.5px;font-family:inherit;width:100%;min-width:0;transition:border-color .2s,box-shadow .2s;
}
.fb-field input::placeholder{color:var(--dim)}
.fb-field input:focus,.fb-field select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(53,214,196,.12)}
.fb-field select option{background:#0B2030;color:var(--text)}
.fb-tabs{display:inline-flex;padding:2px;border-radius:9px;background:rgba(18,42,58,.6);border:1px solid var(--line);height:38px}
.fb-tabs button{border:0;background:transparent;color:var(--dim);font-size:12.5px;padding:0 11px;border-radius:7px;transition:all .2s}
.fb-tabs button.is-on{background:rgba(53,214,196,.16);color:var(--primary);box-shadow:inset 0 0 0 1px rgba(53,214,196,.28)}
.fb-tabs button:hover{color:var(--text)}

/* ---------- chips ---------- */
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:7px;height:40px;padding:0 16px;border-radius:999px;
  background:rgba(18,42,58,.5);border:1px solid var(--line);color:var(--muted);font-size:13.5px;
  transition:all .2s ease;
}
.chip:hover{color:var(--text);border-color:var(--line-strong);background:rgba(53,214,196,.08)}
.chip.is-on{color:var(--primary);border-color:var(--line-strong);background:rgba(53,214,196,.14);box-shadow:var(--glow)}
.chip .dot{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.7}

/* ---------- info list ---------- */
.list-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.list-card{
  display:flex;gap:14px;padding:14px;border-radius:var(--radius-md);
  background:rgba(18,42,58,.42);border:1px solid var(--line);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.list-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 18px 40px rgba(0,0,0,.34);background:rgba(18,42,58,.6)}
.lc-thumb{
  flex:0 0 148px;width:148px;height:108px;border-radius:10px;overflow:hidden;
  border:1px solid var(--line);background:linear-gradient(150deg,rgba(53,214,196,.16),rgba(11,32,48,.9));
  display:grid;place-items:center;position:relative;
}
.lc-thumb img{width:100%;height:100%;object-fit:cover;opacity:.92}
.lc-thumb.seal span{font-family:var(--font-serif);font-size:34px;color:rgba(53,214,196,.82);text-shadow:0 0 22px rgba(53,214,196,.35)}
.lc-body{min-width:0;display:flex;flex-direction:column;gap:6px}
.lc-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:11.5px;color:var(--dim)}
.tag{
  display:inline-flex;align-items:center;border-radius:999px;padding:1px 9px;font-size:11.5px;line-height:1.8;
  color:var(--primary);background:rgba(53,214,196,.1);border:1px solid rgba(53,214,196,.24);
}
.tag-amber{color:var(--accent);background:rgba(246,179,107,.1);border-color:rgba(246,179,107,.26)}
.lc-title{font-size:15px;font-weight:600;line-height:1.55;margin:0;color:var(--text)}
.lc-title a{color:var(--text)}
.lc-title a:hover{color:var(--primary)}
.lc-desc{font-size:12.8px;color:var(--muted);line-height:1.75;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.lc-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:11.5px;color:var(--dim)}
.lc-foot .arrow{color:var(--primary);transition:transform .2s ease,color .2s ease}
.list-card:hover .lc-foot .arrow{transform:translateX(3px);color:var(--accent)}
.list-more{display:flex;justify-content:center;margin-top:20px}
.list-more .btn{min-width:180px}
.list-more .btn[disabled]{opacity:.5;cursor:not-allowed;transform:none}

/* ---------- picks ---------- */
.pick-list{display:grid;gap:12px}
.pick-row{
  display:grid;grid-template-columns:44px minmax(0,1fr) auto;gap:14px;align-items:center;
  padding:14px 16px;border-radius:var(--radius-md);background:rgba(18,42,58,.4);border:1px solid var(--line);
  transition:border-color .2s,background .2s,transform .2s;
}
.pick-row:hover{border-color:var(--line-strong);background:rgba(18,42,58,.58);transform:translateY(-2px)}
.pick-num{font-family:var(--font-serif);font-size:20px;color:rgba(53,214,196,.55);font-variant-numeric:tabular-nums;text-align:center}
.pick-main{min-width:0}
.pick-title{font-size:15px;font-weight:600;margin:0 0 4px;color:var(--text);line-height:1.5}
.pick-title a{color:var(--text)}
.pick-title a:hover{color:var(--primary)}
.pick-desc{font-size:12.8px;color:var(--muted);margin:0;line-height:1.72}
.pick-side{display:flex;align-items:center;gap:10px;font-size:11.5px;color:var(--dim);white-space:nowrap}

/* ---------- tags ---------- */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag-btn{
  border-radius:999px;padding:7px 15px;font-size:13px;border:1px solid var(--line);
  background:rgba(18,42,58,.45);color:var(--muted);transition:all .2s ease;
}
.tag-btn:hover{color:var(--accent);border-color:rgba(246,179,107,.4);background:rgba(246,179,107,.08)}
.tag-btn.is-on{color:var(--primary);border-color:var(--line-strong);background:rgba(53,214,196,.12);box-shadow:var(--glow)}

/* ---------- topics ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.topic-card{
  display:flex;flex-direction:column;border-radius:var(--radius-md);overflow:hidden;
  background:rgba(18,42,58,.42);border:1px solid var(--line);transition:transform .2s,border-color .2s,box-shadow .2s;
}
.topic-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 18px 42px rgba(0,0,0,.34)}
.topic-card.wide{grid-column:span 2;flex-direction:row}
.topic-media{height:140px;background:linear-gradient(150deg,rgba(53,214,196,.18),rgba(11,32,48,.9));overflow:hidden;flex:0 0 auto}
.topic-card.wide .topic-media{width:46%;height:auto;min-height:170px}
.topic-media img{width:100%;height:100%;object-fit:cover;opacity:.9}
.topic-body{padding:16px;display:flex;flex-direction:column;gap:8px;min-width:0}
.topic-title{font-size:15.5px;font-weight:600;margin:0;line-height:1.55;color:var(--text)}
.topic-title a{color:var(--text)}
.topic-title a:hover{color:var(--primary)}
.topic-desc{font-size:12.8px;color:var(--muted);line-height:1.75;margin:0}
.topic-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:11.5px;color:var(--dim)}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:260px minmax(0,1fr);gap:24px}
.faq-left .sec-title{margin-bottom:8px}
.faq-list{display:grid;gap:10px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-md);background:rgba(18,42,58,.4);overflow:hidden;transition:border-color .2s,background .2s}
.faq-item.is-open{border-color:var(--line-strong);background:rgba(18,42,58,.58)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;text-align:left;
  padding:15px 16px;background:transparent;border:0;color:var(--text);font-size:14.5px;font-weight:600;line-height:1.6;
}
.faq-q:hover{color:var(--primary)}
.faq-ico{flex:0 0 auto;width:22px;height:22px;border-radius:50%;border:1px solid var(--line-strong);color:var(--primary);display:grid;place-items:center;font-size:14px;line-height:1;transition:transform .2s,background .2s}
.faq-item.is-open .faq-ico{transform:rotate(45deg);background:rgba(53,214,196,.14)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;padding:0 16px}
.faq-a p{font-size:13.5px;color:var(--muted);line-height:1.9;margin:0;padding-bottom:16px}

/* ---------- guide + cta ---------- */
.guide-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:20px}
.steps{display:grid;gap:12px}
.step{display:flex;gap:14px;padding:15px;border-radius:var(--radius-md);background:rgba(18,42,58,.42);border:1px solid var(--line);transition:border-color .2s,transform .2s}
.step:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.step-num{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  font-family:var(--font-serif);font-size:15px;color:var(--primary);
  background:rgba(53,214,196,.12);border:1px solid rgba(53,214,196,.28);font-variant-numeric:tabular-nums;
}
.step-body h3{font-size:14.5px;margin:0 0 4px;font-weight:600;color:var(--text)}
.step-body p{font-size:13px;color:var(--muted);line-height:1.8;margin:0}
.cta-card{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);padding:24px;
  background:
    radial-gradient(420px 240px at 90% -20%,rgba(246,179,107,.18),transparent 70%),
    radial-gradient(520px 300px at 0% 110%,rgba(53,214,196,.2),transparent 70%),
    rgba(10,26,40,.72);
  border:1px solid rgba(126,230,220,.22);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
  display:flex;flex-direction:column;gap:12px;
}
.cta-card h3{font-family:var(--font-serif);font-size:19px;margin:0;line-height:1.4;color:var(--text)}
.cta-card p{font-size:13px;color:var(--muted);line-height:1.85;margin:0}
.cta-actions{display:grid;gap:10px;margin-top:4px}
.cta-note{font-size:11.5px;color:var(--dim);line-height:1.7;margin:0}

/* ---------- footer ---------- */
.site-foot{position:relative;z-index:1;margin-top:26px;padding:52px 0 26px;background:linear-gradient(180deg,rgba(8,23,36,.86),rgba(4,10,17,.98));border-top:1px solid var(--line)}
.site-foot::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(53,214,196,.5),transparent)}
.wrap{max-width:1240px;margin:0 auto;padding:0 24px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.foot-brand .brand-seal{width:34px;height:34px;font-size:17px;border-radius:10px}
.foot-brand .brand-text{font-size:16.5px}
.foot-desc{font-size:13px;color:var(--muted);line-height:1.9;max-width:360px;margin:0}
.foot-col h4{font-size:13.5px;color:var(--text);margin:0 0 12px;font-weight:600;letter-spacing:.02em}
.foot-col ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.foot-col a,.foot-col button{color:var(--muted);font-size:13px;background:none;border:0;padding:0;text-align:left;transition:color .2s}
.foot-col a:hover,.foot-col button:hover{color:var(--primary)}
.foot-bottom{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-top:34px;padding-top:18px;border-top:1px solid var(--line);font-size:12px;color:var(--dim);line-height:1.8}

/* ---------- responsive ---------- */
@media (max-width:1439px){
  .head-search{width:240px}
}
@media (max-width:1279px){
  .shell{grid-template-columns:220px minmax(0,1fr);gap:24px}
  .pill-group{display:none}
  .head-search{width:215px}
  .filter-bar{grid-template-columns:1.2fr 1fr 1fr;grid-auto-rows:auto}
  .fb-tabs{grid-column:span 1}
}
@media (max-width:1150px){
  .head-search{display:none}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .menu-btn{display:grid}
  .shell{grid-template-columns:minmax(0,1fr);padding:18px 24px 60px}
  .doc-side{display:none}
  .faq-grid{grid-template-columns:minmax(0,1fr);gap:16px}
  .guide-grid{grid-template-columns:minmax(0,1fr)}
  .topic-card.wide{grid-column:span 2;flex-direction:column}
  .topic-card.wide .topic-media{width:100%;height:140px;min-height:0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:860px){
  .list-grid{grid-template-columns:minmax(0,1fr)}
  .topic-grid{grid-template-columns:minmax(0,1fr)}
  .topic-card.wide{grid-column:span 1}
  .filter-bar{grid-template-columns:1fr 1fr}
  .filter-bar .btn{grid-column:span 2}
}
@media (max-width:768px){
  .head-inner{height:64px;padding:0 16px;gap:10px}
  .brand-text{font-size:16px}
  .brand-badge{display:none}
  .shell{padding:14px 16px 52px}
  .panel{padding:18px;border-radius:16px}
  .cat-head{padding:18px}
  .page-title{font-size:clamp(1.5rem,6vw,1.95rem)}
  .wrap{padding:0 16px}
  .site-foot{padding:38px 0 22px}
  .foot-grid{grid-template-columns:1fr;gap:22px}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .sec-head-row{align-items:flex-start}
  .pick-row{grid-template-columns:34px minmax(0,1fr);gap:10px}
  .pick-side{grid-column:2;justify-content:flex-start}
}
@media (max-width:560px){
  .filter-bar{grid-template-columns:minmax(0,1fr)}
  .filter-bar .btn{grid-column:span 1}
  .fb-tabs{justify-content:space-between;width:100%}
  .fb-tabs button{flex:1 1 auto}
  .list-card{flex-direction:column}
  .lc-thumb{width:100%;height:150px;flex:0 0 auto}
  .lc-thumb.seal span{font-size:30px}
  .sec-meta{white-space:normal}
  .chip{height:38px;padding:0 13px;font-size:12.5px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .list-card:hover,.topic-card:hover,.pick-row:hover,.step:hover{transform:none}
}