/* roulang page: index */
:root{
  --bg:#0A0F0D;
  --panel:#121A17;
  --card:#151E1A;
  --elev:#1B2621;
  --input:#0E1513;
  --line:rgba(255,255,255,0.08);
  --line-accent:rgba(184,240,60,0.35);
  --primary:#B8F03C;
  --primary-dark:#8FC22A;
  --cyan:#3CE0C0;
  --orange:#FF7A45;
  --text:#F2F7F3;
  --text-2:#9FB0A8;
  --text-3:#6C7B74;
  --inverse:#0A0F0D;
  --grad:linear-gradient(90deg,#B8F03C,#3CE0C0);
  --radius:16px;
  --radius-lg:20px;
  --radius-btn:10px;
  --shadow:0 1px 0 rgba(255,255,255,0.04) inset;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:var(--sans);font-size:1rem;line-height:1.85;font-weight:400;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease}
button,input{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul{list-style:none;padding:0}
::selection{background:rgba(184,240,60,.28);color:#fff}
body::-webkit-scrollbar{width:10px}
body::-webkit-scrollbar-track{background:#0A0F0D}
body::-webkit-scrollbar-thumb{background:#1B2621;border-radius:999px}
body::-webkit-scrollbar-thumb:hover{background:#2A3833}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1280px){.container{padding:0 48px}}

.section{padding:clamp(64px,8vw,120px) 0}
.section-tight{padding:clamp(48px,6vw,80px) 0}
.eyebrow{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;
  color:var(--text-3);display:inline-flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--grad);display:inline-block}

h1,.h1{font-size:clamp(2.1rem,4.6vw,3.6rem);font-weight:800;line-height:1.12;letter-spacing:-.02em}
h2,.h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;line-height:1.28;letter-spacing:-.01em}
h3,.h3{font-size:clamp(1.05rem,1.6vw,1.25rem);font-weight:600;line-height:1.5}
.lead{color:var(--text-2);font-size:1.02rem;line-height:1.9}
.muted{color:var(--text-2)}
.faint{color:var(--text-3)}
.mono{font-family:var(--mono);font-size:.76rem;letter-spacing:.12em}
.neon-line{height:1px;background:var(--grad);opacity:.5;border:0}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,15,13,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--grad);opacity:.45}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;height:68px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:32px;height:32px;border-radius:9px;border:1px solid var(--line-accent);
  background:radial-gradient(circle at 30% 20%,rgba(184,240,60,.28),transparent 65%);
  display:grid;place-items:center;font-family:var(--mono);font-size:.66rem;color:var(--primary);letter-spacing:.06em;
}
.logo-text{font-weight:700;font-size:1.02rem;letter-spacing:-.01em;white-space:nowrap}
.logo-text em{font-style:normal;color:var(--primary)}
.main-nav{display:none;align-items:center;gap:6px}
.nav-link{
  position:relative;padding:8px 12px;border-radius:8px;font-size:.92rem;color:var(--text-2);
  transition:color .22s ease,background .22s ease;white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(184,240,60,.75);
}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-cta{display:none}
.burger{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.03);
  display:grid;place-items:center;cursor:pointer;gap:5px;padding:0;
}
.burger span{display:block;width:17px;height:1.6px;background:var(--text);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}
@media (min-width:1024px){
  .main-nav{display:flex}
  .nav-cta{display:inline-flex}
  .burger{display:none}
}
.drawer{
  position:fixed;inset:68px 0 0 0;z-index:70;background:rgba(10,15,13,.98);
  backdrop-filter:blur(16px);transform:translateY(-8px);opacity:0;pointer-events:none;
  transition:opacity .26s ease,transform .26s ease;overflow-y:auto;padding:26px 20px 40px;
}
.drawer.open{opacity:1;transform:none;pointer-events:auto}
.drawer a.drawer-link{
  display:flex;align-items:center;gap:12px;padding:16px 6px;border-bottom:1px solid var(--line);
  font-size:1.06rem;font-weight:600;color:var(--text);
}
.drawer a.drawer-link::before{content:"";width:2px;height:20px;background:var(--grad);border-radius:2px;flex-shrink:0}
.drawer a.drawer-link.active{color:var(--primary)}
@media (min-width:1024px){.drawer{display:none}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);font-size:.94rem;font-weight:600;
  cursor:pointer;border:1px solid transparent;transition:all .22s ease;line-height:1.2;
}
.btn-primary{background:var(--grad);color:var(--inverse);box-shadow:0 0 0 0 rgba(184,240,60,0)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 22px rgba(184,240,60,.28)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--line-accent);color:var(--primary);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:.86rem}
.link-arrow{position:relative;display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:.9rem;font-weight:600}
.link-arrow::after{content:"";position:absolute;left:0;bottom:-4px;height:1px;width:0;background:var(--primary);transition:width .28s ease}
.link-arrow:hover::after{width:100%}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;
  background:rgba(184,240,60,.10);color:var(--primary);
  font-family:var(--mono);font-size:.7rem;letter-spacing:.1em;
}
.badge-cyan{background:rgba(60,224,192,.12);color:var(--cyan)}
.badge-orange{background:rgba(255,122,69,.12);color:var(--orange)}
.badge-plain{background:rgba(255,255,255,.05);color:var(--text-2)}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.meta-sep{width:1px;height:12px;background:var(--line);display:inline-block}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:clamp(56px,7vw,96px) 0 clamp(48px,6vw,84px)}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.32}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,15,13,.72) 0%,rgba(10,15,13,.92) 62%,#0A0F0D 100%);
}
.hero-grid{
  position:absolute;inset:0;z-index:0;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse at 30% 20%,#000 10%,transparent 72%);
  mask-image:radial-gradient(ellipse at 30% 20%,#000 10%,transparent 72%);
}
.hero-glow{
  position:absolute;z-index:0;width:620px;height:620px;left:-160px;top:-220px;
  background:radial-gradient(circle,rgba(184,240,60,.18),rgba(60,224,192,.06) 45%,transparent 70%);
  filter:blur(6px);pointer-events:none;
}
.hero-inner{position:relative;z-index:2}
.hero-layout{display:grid;gap:40px}
@media (min-width:1024px){.hero-layout{grid-template-columns:1.35fr .95fr;align-items:center;gap:52px}}
.hero h1 .accent{color:var(--primary)}
.hero-sub{margin-top:20px;max-width:600px;color:var(--text-2);font-size:1.04rem;line-height:1.9}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-panel{
  border:1px solid var(--line);border-radius:var(--radius-lg);background:linear-gradient(180deg,rgba(21,30,26,.9),rgba(18,26,23,.72));
  padding:16px;box-shadow:var(--shadow);
}
.hero-panel img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px;filter:saturate(.92) contrast(1.03)}
.hero-panel-cap{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:14px;padding:0 4px}
.stat-bar{
  position:relative;z-index:2;margin-top:clamp(34px,4vw,54px);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
}
@media (min-width:768px){.stat-bar{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat-cell{padding:18px 4px;border-right:1px solid var(--line)}
.stat-cell:last-child{border-right:0}
@media (max-width:767px){
  .stat-cell:nth-child(2n){border-right:0}
  .stat-cell:nth-child(-n+2){border-bottom:1px solid var(--line)}
}
.stat-cell .num{font-family:var(--mono);font-size:1.3rem;font-weight:600;color:var(--primary);letter-spacing:.04em}
.stat-cell .lbl{font-size:.78rem;color:var(--text-3);margin-top:2px}

/* ---------- claim bar ---------- */
.claim-bar{
  border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--panel);
  padding:24px 26px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
}
.claim-bar p{font-size:1.06rem;font-weight:600}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- cards ---------- */
.card{
  border:1px solid var(--line);border-radius:var(--radius);background:var(--card);
  box-shadow:var(--shadow);transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-accent);box-shadow:0 0 0 1px rgba(184,240,60,.35)}
.card-body{padding:22px}
.card-title{font-weight:600;font-size:1.06rem;line-height:1.55}
.card-text{color:var(--text-2);font-size:.93rem;margin-top:10px;line-height:1.8}

.cat-grid{display:grid;gap:22px}
@media (min-width:768px){.cat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.cat-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.cat-card{display:flex;flex-direction:column;overflow:hidden}
.cat-card .thumb{position:relative;aspect-ratio:16/10;overflow:hidden}
.cat-card .thumb img{width:100%;height:100%;object-fit:cover;filter:saturate(.9) brightness(.86);transition:transform .5s ease}
.cat-card:hover .thumb img{transform:scale(1.04)}
.cat-card .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,15,13,.15),rgba(10,15,13,.72))}
.cat-index{position:absolute;top:12px;right:14px;z-index:2;font-family:var(--mono);font-size:.72rem;color:var(--primary);letter-spacing:.14em}

/* ---------- story ---------- */
.story-row{display:grid;gap:26px;align-items:center}
@media (min-width:1024px){
  .story-row{grid-template-columns:1fr 1fr;gap:56px}
  .story-row.reverse .story-media{order:2}
}
.story-num{font-family:var(--mono);font-size:.78rem;letter-spacing:.2em;color:var(--orange)}
.story-media{
  position:relative;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:16/10;background:var(--panel);
}
.story-media img{width:100%;height:100%;object-fit:cover;opacity:.9}
.story-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,15,13,.1),rgba(10,15,13,.6))}
.story-body p{color:var(--text-2);font-size:.98rem;margin-top:14px;max-width:560px}

/* ---------- featured ---------- */
.feature-grid{display:grid;gap:22px}
@media (min-width:1024px){.feature-grid{grid-template-columns:7fr 5fr}}
.feature-main{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);min-height:320px;display:flex;align-items:flex-end}
.feature-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:saturate(.92)}
.feature-main::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,15,13,.18) 0%,rgba(10,15,13,.55) 45%,rgba(10,15,13,.94) 100%)}
.feature-main-body{position:relative;z-index:2;padding:26px}
.feature-main-body h3{font-size:clamp(1.25rem,2vw,1.6rem);font-weight:700;line-height:1.4}
.feature-side{display:grid;gap:22px;align-content:start}
.mini-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);padding:22px;transition:transform .26s ease,border-color .26s ease}
.mini-card:hover{transform:translateY(-4px);border-color:var(--line-accent)}
.mini-card .idx{font-family:var(--mono);font-size:.7rem;letter-spacing:.16em;color:var(--text-3)}

/* ---------- cms list ---------- */
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px}
.post-list{border-top:1px solid var(--line)}
.post-row{
  display:grid;grid-template-columns:1fr;gap:14px;
  padding:20px 0;border-bottom:1px solid var(--line);
  transition:transform .24s ease,background .24s ease;position:relative;
}
.post-row::before{content:"";position:absolute;left:-14px;top:14px;bottom:14px;width:2px;border-radius:2px;background:transparent;transition:background .24s ease}
.post-row:hover{transform:translateX(4px)}
.post-row:hover::before{background:var(--grad)}
@media (min-width:768px){
  .post-row{grid-template-columns:92px 1fr 32px;align-items:start;gap:20px}
}
.post-time{display:flex;flex-direction:column;gap:2px;font-family:var(--mono);font-size:.74rem;letter-spacing:.1em;color:var(--orange)}
.post-time .d{font-size:1.02rem;font-weight:600;color:var(--text)}
.post-title{font-weight:600;font-size:1.04rem;line-height:1.6;transition:color .22s ease}
.post-row:hover .post-title{color:var(--primary)}
.post-sum{color:var(--text-2);font-size:.9rem;margin-top:8px;line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-arrow{display:none;color:var(--text-3);transition:color .22s ease,transform .22s ease}
@media (min-width:768px){.post-arrow{display:flex;justify-content:flex-end;padding-top:6px}}
.post-row:hover .post-arrow{color:var(--primary);transform:translateX(3px)}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius);padding:34px 26px;text-align:center;background:rgba(21,30,26,.5);
}
.empty-state .glyph{font-family:var(--mono);font-size:1.6rem;color:var(--primary);letter-spacing:.1em}

/* ---------- proof ---------- */
.proof-grid{display:grid;gap:36px}
@media (min-width:1024px){.proof-grid{grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}}
.proof-nums{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.proof-cell{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);padding:20px}
.proof-cell .n{font-family:var(--mono);font-size:1.5rem;font-weight:600;color:var(--primary);letter-spacing:.02em}
.proof-cell .t{font-size:.82rem;color:var(--text-3);margin-top:6px}
.proof-list li{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);color:var(--text-2);font-size:.94rem}
.proof-list li::before{content:"";width:6px;height:6px;background:var(--cyan);border-radius:2px;margin-top:11px;flex-shrink:0}

/* ---------- cta form ---------- */
.cta-panel{
  position:relative;border:1px solid var(--line-accent);border-radius:var(--radius-lg);overflow:hidden;
  background:linear-gradient(135deg,#121A17 0%,#0E1513 55%,#121A17 100%);
  padding:clamp(28px,4vw,46px);display:grid;gap:28px;
}
@media (min-width:1024px){.cta-panel{grid-template-columns:1fr 1fr;align-items:center;gap:44px}}
.cta-panel::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad)}
.cta-form{display:grid;gap:12px}
@media (min-width:768px){.cta-form{grid-template-columns:1fr auto;gap:12px;align-items:center}}
.field{
  width:100%;background:var(--input);border:1px solid var(--line);border-radius:var(--radius-btn);
  padding:13px 16px;color:var(--text);transition:border-color .22s ease,box-shadow .22s ease;
}
.field::placeholder{color:var(--text-3)}
.field:focus{outline:none;border-color:var(--line-accent);box-shadow:0 0 0 3px rgba(184,240,60,.12)}
.form-note{font-size:.78rem;color:var(--text-3);margin-top:10px}

/* ---------- faq ---------- */
.faq-list{margin-top:8px}
.faq-item{border-top:1px solid var(--line);position:relative}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-item summary{
  cursor:pointer;list-style:none;padding:20px 46px 20px 18px;font-weight:600;
  font-size:1rem;line-height:1.7;position:relative;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:16px;top:50%;transform:translateY(-50%);
  font-family:var(--mono);font-size:1.15rem;color:var(--primary);transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-item[open]::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--grad)}
.faq-answer{padding:0 46px 22px 18px;color:var(--text-2);font-size:.94rem;line-height:1.85}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--panel);padding-top:1px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad);opacity:.5}
.footer-grid{display:grid;gap:34px;padding:clamp(44px,6vw,72px) 0 32px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}}
.footer-title{font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;color:var(--text-3);margin-bottom:14px}
.footer-link{display:block;color:var(--text-2);font-size:.92rem;padding:6px 0;transition:color .22s ease,transform .22s ease}
.footer-link:hover{color:var(--primary);transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 28px;display:flex;flex-wrap:wrap;
  align-items:center;justify-content:space-between;gap:12px;font-size:.82rem;color:var(--text-3);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bg:#0A0F0D;
  --panel:#121A17;
  --card:#151E1A;
  --raise:#1B2621;
  --line:rgba(255,255,255,.08);
  --line-neon:rgba(184,240,60,.35);
  --primary:#B8F03C;
  --primary-dim:#8FC22A;
  --cyan:#3CE0C0;
  --orange:#FF7A45;
  --text:#F2F7F3;
  --text-2:#9FB0A8;
  --text-3:#6C7B74;
  --ink:#0A0F0D;
  --grad:linear-gradient(90deg,#B8F03C,#3CE0C0);
  --r-card:16px;
  --r-big:20px;
  --r-btn:10px;
  --shadow-in:0 1px 0 rgba(255,255,255,.04);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:1rem;
  line-height:1.85;
  font-weight:400;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,opacity .2s ease}
button,input{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0}
::selection{background:rgba(184,240,60,.28);color:#fff}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container{padding-left:32px;padding-right:32px}}
@media(min-width:1280px){.container{padding-left:48px;padding-right:48px}}

.mono{font-family:var(--font-mono);letter-spacing:.12em}
.muted{color:var(--text-2)}
.weak{color:var(--text-3)}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,15,13,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.site-header::after{
  content:"";display:block;height:1px;width:100%;
  background:var(--grad);opacity:.55;
}
.header-inner{display:flex;align-items:center;gap:22px;height:68px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:9px;
  display:grid;place-items:center;
  background:rgba(184,240,60,.10);
  border:1px solid var(--line-neon);
  color:var(--primary);
  font-family:var(--font-mono);font-size:.75rem;letter-spacing:.06em;font-weight:700;
}
.logo-text{font-size:1.02rem;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.logo-text em{color:var(--primary);font-style:normal;margin:0 2px}
.main-nav{display:none;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;
  padding:8px 12px;border-radius:8px;
  font-size:.92rem;color:var(--text-2);
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--grad);
  box-shadow:0 0 10px rgba(184,240,60,.55);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.main-nav + .header-actions{margin-left:12px}
.nav-toggle{
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);
  display:grid;place-items:center;gap:4px;padding:10px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-2);transition:.2s}
.nav-toggle:hover span{background:var(--primary)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
@media(min-width:1024px){
  .main-nav{display:flex}
  .nav-toggle{display:none}
}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(10,15,13,.98);
}
.mobile-drawer.open{display:block}
.mobile-drawer .inner{padding:18px 20px 26px;display:flex;flex-direction:column;gap:4px}
.drawer-link{
  padding:12px 14px;border-left:2px solid transparent;border-radius:0 8px 8px 0;
  color:var(--text-2);font-size:.98rem;
}
.drawer-link:hover,.drawer-link.active{
  border-left-color:var(--primary);
  background:rgba(184,240,60,.07);
  color:var(--primary);
}
.drawer-cta{margin-top:14px}

/* ---------- buttons / badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--r-btn);
  font-size:.94rem;font-weight:600;line-height:1.2;
  border:1px solid transparent;transition:all .22s ease;white-space:nowrap;
}
.btn-sm{padding:8px 15px;font-size:.86rem}
.btn-primary{
  background:var(--grad);color:var(--ink);
  box-shadow:0 0 0 rgba(184,240,60,0);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 8px 26px -12px rgba(184,240,60,.75)}
.btn-ghost{
  border-color:var(--line);color:var(--text-2);background:transparent;
}
.btn-ghost:hover{border-color:var(--line-neon);color:var(--primary);transform:translateY(-1px)}
.btn-link{
  padding:0;color:var(--primary);font-weight:600;
  border-bottom:1px solid transparent;
}
.btn-link:hover{border-bottom-color:var(--primary)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  background:rgba(184,240,60,.10);color:var(--primary);
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.12em;
  border:1px solid rgba(184,240,60,.18);white-space:nowrap;
}
.badge-cyan{background:rgba(60,224,192,.10);color:var(--cyan);border-color:rgba(60,224,192,.2)}
.badge-orange{background:rgba(255,122,69,.10);color:var(--orange);border-color:rgba(255,122,69,.2)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.divider-v{width:1px;height:12px;background:var(--line);display:inline-block;margin:0 10px;vertical-align:middle}

/* ---------- page head ---------- */
.page-head{
  position:relative;
  border-bottom:1px solid var(--line);
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  overflow:hidden;
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,15,13,.92) 0%,rgba(10,15,13,.97) 62%,var(--bg) 100%);
}
.page-head::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;opacity:.5;pointer-events:none;
}
.page-head .container{position:relative;z-index:2;padding-top:38px;padding-bottom:44px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.82rem;color:var(--text-3);margin-bottom:20px}
.crumbs a{color:var(--text-2)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:var(--text-3);opacity:.6}
.crumbs .now{color:var(--text-2);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.article-title{
  font-size:clamp(1.72rem,3.4vw,2.75rem);
  font-weight:800;letter-spacing:-.02em;line-height:1.18;
  margin:16px 0 0;
  max-width:900px;
  overflow-wrap:anywhere;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:20px;font-family:var(--font-mono);font-size:.76rem;
  letter-spacing:.1em;color:var(--text-3);
}
.article-meta .item{color:var(--text-2)}

/* ---------- article layout ---------- */
.article-main{padding:clamp(48px,6vw,84px) 0 clamp(64px,8vw,110px)}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:44px;justify-content:center}
@media(min-width:1024px){
  .article-grid{grid-template-columns:minmax(0,760px) 210px;gap:56px}
}
.cover-wrap{
  border-radius:var(--r-big);overflow:hidden;border:1px solid var(--line);
  position:relative;aspect-ratio:16/9;background:var(--card);
}
.cover-wrap img{width:100%;height:100%;object-fit:cover;opacity:.9}
.cover-wrap::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,15,13,0) 40%,rgba(10,15,13,.55) 100%);
}
.cover-cap{
  position:absolute;left:16px;bottom:14px;z-index:2;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.12em;color:var(--text-2);
}

/* toc */
.toc-panel{display:none}
@media(min-width:1024px){
  .toc-panel{display:block;position:sticky;top:96px;align-self:start}
}
.toc-title{
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;
  color:var(--text-3);margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line);
}
.toc-list{list-style:none;display:flex;flex-direction:column;gap:2px;max-height:60vh;overflow:auto}
.toc-list a{
  display:block;padding:6px 10px;font-size:.85rem;color:var(--text-2);
  border-left:2px solid transparent;border-radius:0 6px 6px 0;line-height:1.5;
}
.toc-list a:hover{color:var(--text);background:rgba(255,255,255,.04)}
.toc-list a.is-active{color:var(--primary);border-left-color:var(--primary);background:rgba(184,240,60,.07)}
.toc-list a.lv3{padding-left:22px;font-size:.8rem;color:var(--text-3)}
.toc-empty{font-size:.82rem;color:var(--text-3)}

.toc-mobile{border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);margin-bottom:26px;overflow:hidden}
@media(min-width:1024px){.toc-mobile{display:none}}
.toc-mobile summary{
  list-style:none;cursor:pointer;padding:14px 18px;
  font-family:var(--font-mono);font-size:.76rem;letter-spacing:.12em;color:var(--text-2);
  display:flex;justify-content:space-between;align-items:center;
}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile summary::after{content:"+";color:var(--primary);font-size:1rem}
.toc-mobile[open] summary::after{content:"×"}
.toc-mobile .toc-list{padding:0 12px 14px}

/* ---------- article body ---------- */
.article-body{font-size:1.02rem;line-height:1.9;color:var(--text-2);overflow-wrap:anywhere}
.article-body > * + *{margin-top:1.4em}
.article-body p{color:var(--text-2)}
.article-body strong{color:var(--text);font-weight:700}
.article-body em{color:var(--primary);font-style:normal}
.article-body h2{
  position:relative;
  margin-top:2.2em;margin-bottom:.9em;
  padding-left:16px;
  font-size:clamp(1.25rem,2.2vw,1.55rem);
  font-weight:700;color:var(--text);line-height:1.4;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:3px;
  background:var(--grad);box-shadow:0 0 12px rgba(184,240,60,.5);
}
.article-body h3{
  margin-top:1.7em;margin-bottom:.6em;
  font-size:1.12rem;font-weight:600;color:var(--text);
}
.article-body h4{font-size:1rem;font-weight:600;color:var(--text);margin-top:1.4em}
.article-body ul,.article-body ol{padding-left:1.2em;display:flex;flex-direction:column;gap:.55em}
.article-body ul{list-style:none;padding-left:0}
.article-body ul > li{position:relative;padding-left:20px}
.article-body ul > li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;
  background:var(--primary);border-radius:2px;opacity:.85;
  box-shadow:0 0 8px rgba(184,240,60,.5);
}
.article-body ol{list-style:decimal}
.article-body ol > li::marker{color:var(--primary);font-family:var(--font-mono);font-size:.85em}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;
  border-left:2px solid var(--primary);
  background:rgba(255,255,255,.025);
  border-radius:0 12px 12px 0;
  color:var(--text-2);
}
.article-body blockquote p{margin:0}
.article-body a{color:var(--cyan);border-bottom:1px dashed rgba(60,224,192,.45)}
.article-body a:hover{color:var(--primary);border-bottom-color:var(--primary)}
.article-body img{border-radius:var(--r-card);border:1px solid var(--line);margin:1.6em auto}
.article-body figure{margin:1.8em 0}
.article-body figcaption{
  text-align:center;font-size:.8rem;color:var(--text-3);
  font-family:var(--font-mono);letter-spacing:.06em;margin-top:10px;
}
.article-body table{
  width:100%;border-collapse:collapse;font-size:.9rem;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.article-body th,.article-body td{
  padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;
}
.article-body thead th{background:var(--raise);color:var(--text);font-weight:600;font-size:.85rem}
.article-body tbody tr:nth-child(odd){background:rgba(255,255,255,.02)}
.article-body code{
  font-family:var(--font-mono);font-size:.85em;
  background:rgba(184,240,60,.09);color:var(--primary);
  padding:2px 6px;border-radius:6px;
}
.article-body hr{border:0;height:1px;background:var(--line);margin:2.2em 0}

.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-big);
  background:var(--panel);padding:44px 26px;text-align:center;
}
.empty-state .glyph{
  font-family:var(--font-mono);font-size:1.5rem;color:var(--primary);
  letter-spacing:.1em;margin-bottom:14px;
}
.empty-state h2{font-size:1.15rem;color:var(--text);margin-bottom:10px}
.empty-state p{color:var(--text-3);font-size:.92rem;margin-bottom:20px}

/* ---------- article foot ---------- */
.article-foot{margin-top:48px;padding-top:30px;border-top:1px solid var(--line)}
.foot-block + .foot-block{margin-top:30px}
.foot-label{
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;
  color:var(--text-3);margin-bottom:12px;
}
.source-note{
  font-size:.84rem;color:var(--text-3);line-height:1.8;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px 18px;
}
.pager{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:640px){.pager{grid-template-columns:1fr 1fr}}
.pager a{
  display:flex;flex-direction:column;gap:6px;
  padding:16px 18px;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--card);transition:all .22s ease;
}
.pager a:hover{border-color:var(--line-neon);transform:translateY(-3px)}
.pager .p-label{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.14em;color:var(--text-3)}
.pager .p-title{font-size:.95rem;color:var(--text);font-weight:600;line-height:1.5}
.pager .p-next{align-items:flex-end;text-align:right}

/* ---------- related ---------- */
.related{padding:clamp(48px,6vw,84px) 0;border-top:1px solid var(--line);background:var(--panel)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-head h2{font-size:clamp(1.35rem,2.4vw,1.9rem);color:var(--text)}
.section-head .desc{margin-top:10px;color:var(--text-2);font-size:.94rem;max-width:620px}
.related-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media(min-width:768px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.entry-card{
  display:flex;flex-direction:column;gap:12px;
  padding:22px;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--card);transition:all .22s ease;height:100%;
}
.entry-card:hover{border-color:var(--line-neon);transform:translateY(-4px);box-shadow:0 0 0 1px var(--line-neon)}
.entry-card .idx{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;color:var(--orange)}
.entry-card h3{font-size:1.02rem;color:var(--text);line-height:1.5}
.entry-card p{font-size:.88rem;color:var(--text-2);line-height:1.75}
.entry-card .more{margin-top:auto;font-size:.85rem;color:var(--primary);font-weight:600}

/* ---------- CTA ---------- */
.cta-band{padding:clamp(40px,5vw,70px) 0}
.cta-panel{
  position:relative;overflow:hidden;
  border:1px solid var(--line-neon);border-radius:var(--r-big);
  background:linear-gradient(140deg,rgba(18,26,23,.96),rgba(10,15,13,.98));
  padding:clamp(28px,4vw,46px);
  display:grid;grid-template-columns:1fr;gap:26px;align-items:center;
}
@media(min-width:900px){.cta-panel{grid-template-columns:1fr 1fr;gap:40px}}
.cta-panel::before{
  content:"";position:absolute;width:320px;height:320px;right:-90px;top:-140px;border-radius:50%;
  background:radial-gradient(circle,rgba(184,240,60,.20),transparent 68%);
  pointer-events:none;
}
.cta-panel h2{font-size:clamp(1.3rem,2.4vw,1.85rem);color:var(--text);position:relative;z-index:2}
.cta-panel p{margin-top:12px;color:var(--text-2);font-size:.95rem;position:relative;z-index:2}
.sub-form{display:flex;flex-direction:column;gap:12px;position:relative;z-index:2}
@media(min-width:640px){.sub-form{flex-direction:row}}
.sub-form input{
  flex:1;min-width:0;padding:13px 16px;border-radius:var(--r-btn);
  background:#0E1513;border:1px solid var(--line);color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(184,240,60,.14)}
.form-note{font-size:.78rem;color:var(--text-3);margin-top:12px;position:relative;z-index:2}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid transparent;background:var(--bg);position:relative}
.site-footer::before{content:"";display:block;height:1px;width:100%;background:var(--grad);opacity:.6}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:34px;
  padding:clamp(44px,6vw,72px) 0 34px;
}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}}
.footer-title{
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;
  color:var(--text-3);margin-bottom:14px;
}
.footer-link{display:block;font-size:.9rem;color:var(--text-2);padding:5px 0;transition:all .2s ease}
.footer-link:hover{color:var(--primary);transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  font-size:.8rem;color:var(--text-3);
}
.footer-bottom .mono{color:var(--text-3)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none!important;transition:none!important}
}
@media(max-width:520px){
  .logo-text{font-size:.94rem}
  .article-meta{font-size:.7rem}
  .btn{padding:10px 16px}
}

/* roulang page: category1 */
:root{
    --bg:#0A0F0D;
    --panel:#121A17;
    --card:#151E1A;
    --raise:#1B2621;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(184,240,60,.35);
    --neon:#B8F03C;
    --neon-dark:#8FC22A;
    --cyan:#3CE0C0;
    --orange:#FF7A45;
    --text:#F2F7F3;
    --muted:#9FB0A8;
    --faint:#6C7B74;
    --ink:#0A0F0D;
    --radius:16px;
    --radius-lg:20px;
    --radius-sm:10px;
    --shadow:0 1px 0 rgba(255,255,255,.04);
    --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
    --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:var(--sans);
    font-size:1rem;
    line-height:1.85;
    font-weight:400;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    background-image:
      linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),
      linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
    background-size:64px 64px;
  }
  body::after{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:1;
    opacity:.35;
    background:radial-gradient(circle at 78% -6%,rgba(60,224,192,.14),transparent 46%),
               radial-gradient(circle at 8% 12%,rgba(184,240,60,.10),transparent 42%);
  }
  header,main,footer{position:relative;z-index:2}

  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background .2s ease,transform .2s ease}
  button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
  ul{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4{margin:0;line-height:1.2;letter-spacing:-.01em}
  p{margin:0}
  :focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:6px}
  [id]{scroll-margin-top:96px}

  .container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
  @media (min-width:768px){.container{padding-left:32px;padding-right:32px}}
  @media (min-width:1280px){.container{padding-left:48px;padding-right:48px}}

  .mono{font-family:var(--mono);letter-spacing:.1em;font-size:.76rem}
  .muted{color:var(--muted)}
  .section{padding:clamp(56px,7vw,104px) 0}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:clamp(24px,3vw,40px)}
  .section-title{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:.74rem;letter-spacing:.14em;color:var(--cyan);text-transform:uppercase;margin-bottom:12px}
  .eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--neon),var(--cyan))}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(10,15,13,.86);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
  }
  .site-header::after{
    content:"";display:block;height:1px;
    background:linear-gradient(90deg,rgba(184,240,60,.55),rgba(60,224,192,.4),rgba(255,255,255,.04));
  }
  .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;height:68px}
  .logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
  .logo-mark{
    display:inline-flex;align-items:center;justify-content:center;
    width:32px;height:32px;border-radius:9px;
    background:linear-gradient(135deg,rgba(184,240,60,.18),rgba(60,224,192,.14));
    border:1px solid var(--line-strong);
    font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;color:var(--neon);
  }
  .logo-text{font-size:1.02rem;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
  .logo-text em{font-style:normal;color:var(--neon);margin:0 3px}
  .main-nav{display:none}
  @media (min-width:1024px){.main-nav{display:flex;align-items:center;gap:4px}}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;
    padding:10px 14px;border-radius:8px;
    font-size:.94rem;color:var(--muted);white-space:nowrap;
  }
  .nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
  .nav-link.active{color:var(--neon)}
  .nav-link.active::after{
    content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
    width:18px;height:2px;border-radius:2px;
    background:linear-gradient(90deg,var(--neon),var(--cyan));
    box-shadow:0 0 10px rgba(184,240,60,.7);
  }
  .nav-actions{display:flex;align-items:center;gap:10px}
  .nav-actions .btn{display:none}
  @media (min-width:768px){.nav-actions .btn{display:inline-flex}}
  .nav-toggle{
    display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
    width:42px;height:42px;padding:0 10px;border-radius:10px;
    border:1px solid var(--line);background:rgba(255,255,255,.02);
  }
  .nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--text);transition:transform .22s ease,opacity .22s ease}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  @media (min-width:1024px){.nav-toggle{display:none}}

  .mobile-drawer{
    position:fixed;left:0;right:0;top:69px;bottom:0;z-index:55;
    padding:22px 20px 32px;
    background:rgba(10,15,13,.985);
    display:flex;flex-direction:column;gap:6px;
    opacity:0;pointer-events:none;transform:translateY(-10px);
    transition:opacity .24s ease,transform .24s ease;
    overflow-y:auto;
  }
  .mobile-drawer.open{opacity:1;pointer-events:auto;transform:none}
  .mobile-drawer .nav-link{
    display:block;padding:14px 16px;border-left:2px solid transparent;
    font-size:1.02rem;color:var(--text);border-radius:0 10px 10px 0;
  }
  .mobile-drawer .nav-link:hover{background:rgba(184,240,60,.06);border-left-color:var(--neon)}
  .mobile-drawer .nav-link.active{color:var(--neon);border-left-color:var(--neon);background:rgba(184,240,60,.07)}
  .mobile-drawer .btn{margin-top:18px;width:100%}
  .drawer-note{padding:16px 4px;color:var(--faint);font-size:.86rem;border-top:1px solid var(--line);margin-top:14px}

  /* ---------- buttons & badges ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 22px;border-radius:var(--radius-sm);
    font-size:.95rem;font-weight:600;border:1px solid transparent;
    white-space:nowrap;transition:transform .2s ease,filter .2s ease,color .2s ease,border-color .2s ease,background .2s ease;
  }
  .btn-primary{background:linear-gradient(90deg,var(--neon),var(--cyan));color:var(--ink)}
  .btn-primary:hover{transform:translateY(-1px);filter:brightness(1.07)}
  .btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
  .btn-ghost:hover{border-color:var(--line-strong);color:var(--neon)}
  .btn-sm{padding:9px 16px;font-size:.86rem}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;font-size:.9rem;color:var(--muted);
    padding-bottom:2px;background-image:linear-gradient(90deg,var(--neon),var(--cyan));
    background-size:0% 1px;background-repeat:no-repeat;background-position:0 100%;
    transition:background-size .28s ease,color .2s ease;
  }
  .link-arrow:hover{color:var(--neon);background-size:100% 1px}

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 11px;border-radius:999px;
    background:rgba(184,240,60,.10);color:var(--neon);
    border:1px solid rgba(184,240,60,.18);
    font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;line-height:1.7;
  }
  .badge-cyan{background:rgba(60,224,192,.10);color:var(--cyan);border-color:rgba(60,224,192,.22)}
  .badge-orange{background:rgba(255,122,69,.12);color:var(--orange);border-color:rgba(255,122,69,.26)}
  .badge-plain{background:rgba(255,255,255,.05);color:var(--muted);border-color:var(--line)}
  .tag-row{display:flex;flex-wrap:wrap;gap:8px}
  .divider-dot{width:1px;height:12px;background:var(--line);display:inline-block;margin:0 10px;vertical-align:middle}

  /* ---------- page hero ---------- */
  .page-hero{position:relative;overflow:hidden;padding:clamp(44px,6vw,84px) 0 clamp(40px,5vw,68px);border-bottom:1px solid var(--line)}
  .hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.26;filter:grayscale(.25) contrast(1.05)}
  .page-hero::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(10,15,13,.70) 0%,rgba(10,15,13,.90) 55%,var(--bg) 100%);
  }
  .hero-inner{position:relative;z-index:2;max-width:880px}
  .breadcrumb{display:flex;align-items:center;gap:10px;font-size:.85rem;color:var(--faint);margin-bottom:20px;flex-wrap:wrap}
  .breadcrumb a:hover{color:var(--neon)}
  .breadcrumb .current{color:var(--muted)}
  .page-hero h1{
    font-size:clamp(2rem,4.2vw,3.2rem);
    font-weight:800;line-height:1.14;letter-spacing:-.02em;
    margin:16px 0 18px;
  }
  .hero-sub{font-size:clamp(1rem,1.3vw,1.08rem);color:var(--muted);max-width:660px}

  /* ---------- stat strip ---------- */
  .stat-strip{border-bottom:1px solid var(--line);background:var(--panel)}
  .stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line)}
  @media (min-width:768px){.stat-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
  .stat-cell{background:var(--panel);padding:22px 20px}
  .stat-num{font-family:var(--mono);font-size:1.45rem;color:var(--neon);letter-spacing:.02em;line-height:1.2}
  .stat-label{font-size:.85rem;color:var(--muted);margin-top:6px}

  /* ---------- split layout ---------- */
  .split{display:grid;gap:28px}
  @media (min-width:1024px){.split{grid-template-columns:260px minmax(0,1fr);gap:48px;align-items:start}}

  .toc-side{display:flex;flex-direction:column;gap:18px}
  @media (min-width:1024px){.toc-side{position:sticky;top:96px}}
  .toc-card{
    border:1px solid var(--line);border-radius:var(--radius);
    background:var(--card);padding:18px;
  }
  .toc-title{font-family:var(--mono);font-size:.74rem;letter-spacing:.14em;color:var(--faint);text-transform:uppercase;margin-bottom:12px}
  .toc-link{
    display:block;padding:9px 10px;border-left:2px solid transparent;border-radius:0 8px 8px 0;
    color:var(--muted);font-size:.92rem;
  }
  .toc-link:hover{color:var(--neon);border-left-color:var(--line-strong);background:rgba(184,240,60,.05)}
  .toc-note{font-size:.86rem;color:var(--faint);line-height:1.7}
  .toc-note strong{color:var(--cyan);font-weight:600}

  /* ---------- timeline ---------- */
  .tl-group{margin-bottom:46px}
  .tl-group:last-child{margin-bottom:0}
  .tl-group-head{display:flex;align-items:baseline;gap:14px;padding-bottom:14px;border-bottom:1px solid var(--line)}
  .tl-group-idx{font-family:var(--mono);font-size:.76rem;letter-spacing:.14em;color:var(--orange)}
  .tl-group-title{font-size:clamp(1.12rem,1.6vw,1.3rem);font-weight:700}
  .tl-item{
    position:relative;display:grid;grid-template-columns:88px 24px minmax(0,1fr);
    gap:0 16px;padding:22px 0;border-bottom:1px solid var(--line);
    transition:transform .22s ease,background .22s ease;
  }
  .tl-item:first-of-type{border-top:1px solid var(--line)}
  .tl-item:hover{transform:translateX(4px)}
  .tl-when{display:flex;flex-direction:column;gap:8px;padding-top:2px}
  .tl-date{font-family:var(--mono);font-size:.86rem;letter-spacing:.08em;color:var(--neon)}
  .tl-status{font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;color:var(--faint)}
  .tl-rail{position:relative}
  .tl-rail::before{content:"";position:absolute;left:50%;top:0;bottom:0;width:1px;background:var(--line);transform:translateX(-50%)}
  .tl-rail::after{
    content:"";position:absolute;left:50%;top:6px;width:9px;height:9px;border-radius:50%;
    background:var(--bg);border:2px solid var(--neon);transform:translateX(-50%);
    box-shadow:0 0 10px rgba(184,240,60,.45);transition:box-shadow .22s ease,background .22s ease;
  }
  .tl-item:hover .tl-rail::after{background:var(--neon);box-shadow:0 0 16px rgba(184,240,60,.8)}
  .tl-body h3{font-size:1.05rem;font-weight:600;margin-bottom:8px}
  .tl-body p{color:var(--muted);font-size:.95rem;max-width:660px}
  .tl-body .tag-row{margin-top:12px}

  /* ---------- notice ---------- */
  .notice-band{
    border:1px solid rgba(255,122,69,.28);
    background:linear-gradient(180deg,rgba(255,122,69,.07),rgba(255,122,69,.02));
    border-radius:var(--radius-lg);padding:clamp(22px,3vw,34px);
  }
  .notice-grid{display:grid;gap:24px}
  @media (min-width:900px){.notice-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px}}
  .notice-band h2{font-size:clamp(1.3rem,2.1vw,1.7rem);font-weight:700;margin:12px 0 12px}
  .notice-list li{
    display:flex;gap:12px;padding:12px 0;border-top:1px solid rgba(255,255,255,.07);
    color:var(--muted);font-size:.94rem;
  }
  .notice-list li:first-child{border-top:0;padding-top:0}
  .notice-list li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:11px;border-radius:2px;background:var(--orange)}
  .notice-figure{
    border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
    position:relative;aspect-ratio:16/10;background:var(--panel);
  }
  .notice-figure img{width:100%;height:100%;object-fit:cover}
  .notice-figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,15,13,.05),rgba(10,15,13,.72))}
  .notice-figure figcaption{
    position:absolute;left:16px;right:16px;bottom:14px;z-index:2;
    font-size:.82rem;color:var(--muted);
  }

  /* ---------- faq ---------- */
  .faq-list{border-top:1px solid var(--line)}
  .faq-item{position:relative;border-bottom:1px solid var(--line);padding-left:16px;transition:padding .2s ease}
  .faq-item::before{
    content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;border-radius:2px;
    background:linear-gradient(180deg,var(--neon),var(--cyan));
    opacity:0;transition:opacity .22s ease;
  }
  .faq-item[open]::before{opacity:1}
  .faq-q{
    display:flex;align-items:flex-start;gap:14px;
    padding:20px 0;font-size:1.02rem;font-weight:600;cursor:pointer;list-style:none;
  }
  .faq-q::-webkit-details-marker{display:none}
  .faq-plus{
    flex:0 0 auto;position:relative;width:18px;height:18px;margin-top:6px;
    transition:transform .25s ease;
  }
  .faq-plus::before,.faq-plus::after{
    content:"";position:absolute;left:50%;top:50%;background:var(--neon);border-radius:2px;
    transform:translate(-50%,-50%);
  }
  .faq-plus::before{width:14px;height:2px}
  .faq-plus::after{width:2px;height:14px}
  .faq-item[open] .faq-plus{transform:rotate(45deg)}
  .faq-a{padding:0 0 22px 32px;color:var(--muted);font-size:.95rem;max-width:720px}

  /* ---------- cta ---------- */
  .cta-panel{
    border:1px solid var(--line-strong);
    border-radius:var(--radius-lg);
    background:linear-gradient(120deg,rgba(184,240,60,.08),rgba(60,224,192,.05) 55%,rgba(21,30,26,.9));
    padding:clamp(26px,3.6vw,44px);
    display:grid;gap:24px;
  }
  @media (min-width:900px){.cta-panel{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:40px}}
  .cta-panel h2{font-size:clamp(1.4rem,2.3vw,1.9rem);font-weight:700;margin-bottom:12px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}
  .cta-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

  /* ---------- footer ---------- */
  .site-footer{border-top:1px solid transparent;background:var(--panel);margin-top:clamp(56px,7vw,96px);position:relative}
  .site-footer::before{
    content:"";position:absolute;top:0;left:0;right:0;height:1px;
    background:linear-gradient(90deg,rgba(184,240,60,.6),rgba(60,224,192,.45),transparent);
  }
  .footer-grid{display:grid;gap:32px;padding:clamp(40px,5vw,64px) 0 clamp(28px,3vw,40px)}
  @media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}}
  .footer-title{font-family:var(--mono);font-size:.74rem;letter-spacing:.14em;color:var(--faint);text-transform:uppercase;margin-bottom:14px}
  .footer-link{display:block;padding:7px 0;color:var(--muted);font-size:.93rem}
  .footer-link:hover{color:var(--neon);transform:translateX(2px)}
  .footer-bottom{
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
    padding:18px 0 26px;border-top:1px solid var(--line);color:var(--faint);font-size:.84rem;
  }

  /* ---------- reveal ---------- */
  .js .reveal{opacity:0;transform:translateY(12px)}
  .js .reveal.in{opacity:1;transform:none;transition:opacity .6s ease,transform .6s ease}
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    *,*::before,*::after{animation:none!important;transition:none!important}
    .js .reveal{opacity:1;transform:none}
  }

  @media (max-width:640px){
    .tl-item{grid-template-columns:minmax(0,1fr);gap:10px}
    .tl-rail{display:none}
    .tl-when{flex-direction:row;align-items:center;gap:12px}
    .faq-a{padding-left:0}
    .faq-item{padding-left:14px}
    .cta-actions .btn{width:100%}
  }

/* roulang page: category2 */
:root{
  --bg:#0A0F0D;
  --panel:#121A17;
  --card:#151E1A;
  --float:#1B2621;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(184,240,60,.35);
  --lime:#B8F03C;
  --lime-dark:#8FC22A;
  --cyan:#3CE0C0;
  --orange:#FF7A45;
  --text:#F2F7F3;
  --text-2:#9FB0A8;
  --text-3:#6C7B74;
  --ink:#0A0F0D;
  --grad:linear-gradient(90deg,#B8F03C,#3CE0C0);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --r-pill:999px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04) inset;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --sec:clamp(64px,8vw,120px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:1rem;
  line-height:1.85;
  font-weight:400;
  overflow-x:hidden;
  background-image:
    radial-gradient(680px 380px at 82% -6%,rgba(184,240,60,.10),transparent 70%),
    radial-gradient(520px 320px at 6% 12%,rgba(60,224,192,.07),transparent 72%);
  background-repeat:no-repeat;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s ease,background-color .22s ease,border-color .22s ease,transform .22s ease}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:6px}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container{padding-left:32px;padding-right:32px}}
@media(min-width:1280px){.container{padding-left:48px;padding-right:48px}}
.mono{font-family:var(--font-mono);letter-spacing:.12em}
.muted{color:var(--text-2)}
.weak{color:var(--text-3)}
.grad-line{height:2px;background:var(--grad);border:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,15,13,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:var(--grad);opacity:.7;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:68px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.06em;
  color:var(--ink);background:var(--grad);font-weight:700;
}
.logo-text{font-size:1.02rem;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.logo-text em{font-style:normal;color:var(--lime);margin:0 3px}
.main-nav{display:none;align-items:center;gap:4px}
@media(min-width:1024px){.main-nav{display:flex}}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;border-radius:var(--r-sm);
  font-size:.94rem;color:var(--text-2);white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link.active{color:var(--lime)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--grad);box-shadow:0 0 12px rgba(184,240,60,.6);
}
.header-actions{display:flex;align-items:center;gap:12px}
.header-actions .btn{display:none}
@media(min-width:1024px){.header-actions .btn{display:inline-flex}}
.nav-toggle{
  width:42px;height:42px;border-radius:12px;background:rgba(255,255,255,.04);
  border:1px solid var(--line);display:grid;place-content:center;gap:4px;cursor:pointer;
}
@media(min-width:1024px){.nav-toggle{display:none}}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.nav-toggle.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.drawer{
  position:fixed;inset:68px 0 0 0;z-index:55;background:rgba(10,15,13,.98);
  padding:24px 20px 40px;transform:translateY(-8px);opacity:0;pointer-events:none;
  transition:opacity .24s ease,transform .24s ease;overflow-y:auto;
}
.drawer.open{opacity:1;transform:translateY(0);pointer-events:auto}
@media(min-width:1024px){.drawer{display:none}}
.drawer-link{
  display:block;padding:16px 14px;border-left:2px solid transparent;border-radius:var(--r-sm);
  font-size:1.05rem;color:var(--text-2);border-bottom:1px solid var(--line);
}
.drawer-link.active{color:var(--lime);border-left-color:var(--lime);background:rgba(184,240,60,.06)}
.drawer-link:hover{color:var(--text);border-left-color:var(--cyan)}
.drawer .btn{margin-top:22px;width:100%;justify-content:center}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:.95rem;font-weight:600;cursor:pointer;line-height:1.2;
}
.btn-sm{padding:9px 16px;font-size:.88rem}
.btn-primary{background:var(--grad);color:var(--ink)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--lime);transform:translateY(-1px)}
.text-link{color:var(--lime);font-size:.92rem;font-weight:600;position:relative}
.text-link::after{content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--grad);transition:width .28s ease}
.text-link:hover::after{width:100%}

/* ---------- badges ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(184,240,60,.10);color:var(--lime);
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.12em;
  border:1px solid rgba(184,240,60,.18);white-space:nowrap;
}
.badge-cyan{background:rgba(60,224,192,.10);color:var(--cyan);border-color:rgba(60,224,192,.20)}
.badge-orange{background:rgba(255,122,69,.10);color:var(--orange);border-color:rgba(255,122,69,.22)}
.divider-v{width:1px;height:12px;background:var(--line);display:inline-block}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(10,15,13,.70) 0%,rgba(10,15,13,.90) 58%,rgba(10,15,13,.98) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.page-hero-bg::after{
  content:"";position:absolute;inset:0;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:52px 52px;
}
.page-hero-inner{position:relative;padding:clamp(56px,8vw,104px) 0 clamp(44px,6vw,72px)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:.82rem;color:var(--text-3);font-family:var(--font-mono);letter-spacing:.06em}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb .sep{color:var(--text-3);opacity:.6}
.hero-title{
  margin:22px 0 0;font-size:clamp(2.1rem,4.6vw,3.6rem);font-weight:800;line-height:1.14;letter-spacing:-.02em;
  max-width:20ch;
}
.hero-title .hl{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin-top:20px;max-width:660px;color:var(--text-2);font-size:1.02rem;line-height:1.85}
.hero-meta{display:flex;flex-wrap:wrap;gap:14px 26px;margin-top:30px;font-family:var(--font-mono);font-size:.76rem;letter-spacing:.1em;color:var(--text-3)}
.hero-meta b{color:var(--lime);font-weight:600}

/* ---------- sections ---------- */
.section{padding-top:var(--sec)}
.section-tight{padding-top:clamp(48px,6vw,80px)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:38px}
.eyebrow{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.2em;color:var(--cyan);text-transform:uppercase}
.section-title{margin-top:12px;font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;line-height:1.25}
.section-desc{margin-top:12px;max-width:640px;color:var(--text-2);font-size:.96rem}

/* ---------- intro split ---------- */
.intro-grid{display:grid;gap:32px;align-items:center}
@media(min-width:1024px){.intro-grid{grid-template-columns:1.02fr .98fr;gap:56px}}
.intro-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--card)}
.intro-media img{width:100%;aspect-ratio:16/11;object-fit:cover;opacity:.86}
.intro-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,15,13,.10),rgba(10,15,13,.78));
}
.intro-media .media-cap{
  position:absolute;left:20px;right:20px;bottom:18px;z-index:2;
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.12em;color:var(--text-2);
}
.point-list{margin-top:26px;display:grid;gap:14px}
.point{display:grid;grid-template-columns:26px 1fr;gap:14px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.point:last-child{border-bottom:0;padding-bottom:0}
.point .idx{font-family:var(--font-mono);font-size:.76rem;color:var(--orange);letter-spacing:.1em;padding-top:5px}
.point h3{font-size:1.02rem;font-weight:600}
.point p{margin-top:6px;color:var(--text-2);font-size:.93rem}

/* ---------- entry cards ---------- */
.entry-list{display:grid;gap:18px}
.entry-card{
  display:grid;grid-template-columns:auto 1fr;gap:20px;
  padding:24px;border-radius:var(--r-lg);border:1px solid var(--line);
  background:var(--card);box-shadow:var(--shadow-card);
  transition:transform .24s ease,border-color .24s ease,background-color .24s ease;
}
.entry-card:hover{transform:translateY(-4px);border-color:var(--line-strong);background:var(--float)}
.entry-index{
  font-family:var(--font-mono);font-size:clamp(1.6rem,3.4vw,2.3rem);line-height:1;font-weight:700;
  color:transparent;-webkit-text-stroke:1px rgba(184,240,60,.55);
  letter-spacing:.02em;padding-top:4px;min-width:58px;
}
.entry-card:hover .entry-index{-webkit-text-stroke:1px var(--lime)}
.entry-title{font-size:1.14rem;font-weight:700;line-height:1.4}
.entry-text{margin-top:10px;color:var(--text-2);font-size:.95rem;max-width:760px}
.entry-foot{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px}
.entry-foot .mono{font-size:.72rem;color:var(--text-3)}
@media(max-width:520px){
  .entry-card{grid-template-columns:1fr;gap:12px;padding:20px}
  .entry-index{font-size:1.5rem;min-width:0}
}

/* ---------- flow ---------- */
.flow{display:grid;gap:16px}
@media(min-width:768px){.flow{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1200px){.flow{grid-template-columns:repeat(4,1fr)}}
.flow-step{
  position:relative;padding:22px 20px 22px;border-radius:var(--r-md);
  background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .24s ease,border-color .24s ease;
}
.flow-step:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.flow-step::before{content:"";position:absolute;left:20px;top:0;width:36px;height:2px;background:var(--grad)}
.step-num{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.16em;color:var(--orange)}
.step-title{margin-top:10px;font-size:1.02rem;font-weight:600}
.step-text{margin-top:8px;color:var(--text-2);font-size:.9rem}

/* ---------- stats strip ---------- */
.stats{
  display:grid;gap:1px;background:var(--line);border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);margin-top:8px;
}
@media(min-width:768px){.stats{grid-template-columns:repeat(4,1fr)}}
.stat{background:var(--panel);padding:24px 20px}
.stat-num{font-family:var(--font-mono);font-size:1.7rem;font-weight:700;color:var(--lime);letter-spacing:.02em}
.stat-label{margin-top:6px;font-size:.84rem;color:var(--text-2)}

/* ---------- notes list ---------- */
.note-list{margin-top:20px;display:grid;gap:12px}
.note{
  position:relative;padding:16px 18px 16px 22px;border-radius:var(--r-sm);
  background:var(--panel);border:1px solid var(--line);
  transition:transform .2s ease,border-color .2s ease;
}
.note::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;background:rgba(255,255,255,.10);border-radius:2px;transition:background-color .2s ease}
.note:hover{transform:translateX(4px);border-color:var(--line-strong)}
.note:hover::before{background:var(--grad)}
.note h4{font-size:.98rem;font-weight:600}
.note p{margin-top:6px;color:var(--text-2);font-size:.9rem}

/* ---------- faq ---------- */
.faq{margin-top:16px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:14px;
  padding:20px 4px 20px 0;font-size:1.02rem;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .plus{
  flex-shrink:0;width:22px;height:22px;border-radius:6px;border:1px solid var(--line);
  display:grid;place-items:center;font-family:var(--font-mono);font-size:.9rem;color:var(--lime);
  transition:transform .24s ease,border-color .24s ease;margin-top:3px;
}
.faq-item[open] summary .plus{transform:rotate(45deg);border-color:var(--line-strong)}
.faq-item[open]{box-shadow:inset 2px 0 0 0 var(--lime)}
.faq-a{padding:0 0 22px 36px;color:var(--text-2);font-size:.94rem;max-width:820px}

/* ---------- cta panel ---------- */
.cta-panel{
  position:relative;margin-top:var(--sec);padding:clamp(28px,4vw,44px);
  border-radius:var(--r-lg);border:1px solid var(--line-strong);
  background:
    radial-gradient(560px 260px at 88% 10%,rgba(60,224,192,.10),transparent 70%),
    linear-gradient(180deg,var(--panel),#101815);
  display:grid;gap:28px;
}
@media(min-width:1024px){.cta-panel{grid-template-columns:1.05fr .95fr;align-items:center;gap:48px}}
.cta-title{font-size:clamp(1.4rem,2.4vw,1.9rem);font-weight:700;line-height:1.3}
.cta-text{margin-top:12px;color:var(--text-2);font-size:.95rem;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.form-row{display:flex;flex-direction:column;gap:12px}
@media(min-width:768px){.form-row{flex-direction:row}}
.input{
  flex:1;min-width:0;padding:13px 16px;border-radius:var(--r-sm);
  background:#0E1513;border:1px solid var(--line);color:var(--text);font-size:.95rem;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.input::placeholder{color:var(--text-3)}
.input:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(184,240,60,.16)}
.form-note{margin-top:12px;font-size:.78rem;color:var(--text-3);line-height:1.7}
.form-msg{margin-top:10px;font-size:.82rem;color:var(--lime);display:none}
.form-msg.show{display:block}

/* ---------- footer ---------- */
.site-footer{
  margin-top:var(--sec);border-top:1px solid var(--line);position:relative;background:#0B110F;
}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:-1px;height:1px;background:var(--grad);opacity:.75}
.footer-grid{
  display:grid;gap:34px;padding:clamp(40px,5vw,64px) 0 30px;
}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-title{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.16em;color:var(--text-3);margin-bottom:16px;text-transform:uppercase}
.footer-link{display:block;padding:6px 0;color:var(--text-2);font-size:.92rem}
.footer-link:hover{color:var(--lime);transform:translateX(2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;align-items:center;
  padding:20px 0 34px;border-top:1px solid var(--line);color:var(--text-3);font-size:.82rem;
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .entry-card:hover,.flow-step:hover,.note:hover,.btn:hover{transform:none}
  *{scroll-behavior:auto !important}
}
::selection{background:rgba(184,240,60,.28);color:#fff}

/* roulang page: category3 */
:root{
  --bg:#0A0F0D;
  --panel:#121A17;
  --card:#151E1A;
  --raise:#1B2621;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(184,240,60,.35);
  --primary:#B8F03C;
  --primary-dark:#8FC22A;
  --cyan:#3CE0C0;
  --orange:#FF7A45;
  --text:#F2F7F3;
  --text-2:#9FB0A8;
  --text-3:#6C7B74;
  --ink:#0A0F0D;
  --grad:linear-gradient(90deg,#B8F03C,#3CE0C0);
  --r-sm:10px;
  --r:16px;
  --r-lg:20px;
  --pill:999px;
  --shadow:0 1px 0 rgba(255,255,255,.04);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;overflow-x:hidden}
body h1,body h2,body h3,body h4,body p,body ul,body ol,body li,body figure,body figcaption{margin:0;padding:0}
body ul,body ol{list-style:none}
body a{color:inherit;text-decoration:none}
body img{display:block;max-width:100%;height:auto}
body button,body input,body textarea{font:inherit;color:inherit}
body ::selection{background:rgba(184,240,60,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0A0F0D}
::-webkit-scrollbar-thumb{background:#22302A;border-radius:var(--pill)}
::-webkit-scrollbar-thumb:hover{background:#2E4038}

body .container{width:100%;max-width:1200px;margin-left:auto;margin-right:auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){body .container{padding-left:32px;padding-right:32px}}
@media(min-width:1280px){body .container{padding-left:48px;padding-right:48px}}

.mono-label{font-family:var(--mono);font-size:.75rem;letter-spacing:.12em;color:var(--primary)}
.muted{color:var(--text-2)}
.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}

/* 顶栏 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(10,15,13,.86);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:var(--grad);opacity:.55}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{width:32px;height:32px;border-radius:9px;display:grid;place-items:center;font-family:var(--mono);font-size:.76rem;font-weight:700;color:var(--ink);background:var(--grad);letter-spacing:.04em}
.logo-text{font-size:1rem;font-weight:700;color:var(--text);white-space:nowrap}
.logo-text em{font-style:normal;color:var(--primary);margin:0 2px}
.site-header .main-nav{display:none}
@media(min-width:1024px){.site-header .main-nav{display:flex;align-items:center;gap:4px}}
.site-header .nav-link{position:relative;padding:9px 13px;border-radius:var(--pill);font-size:.92rem;color:var(--text-2);white-space:nowrap;transition:color .2s ease,background .2s ease}
.site-header .nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.site-header .nav-link.active{color:var(--primary)}
.site-header .nav-link.active::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:2px;width:18px;height:2px;border-radius:2px;background:var(--grad);box-shadow:0 0 10px rgba(184,240,60,.75)}
.header-actions{display:flex;align-items:center;gap:10px}
@media(max-width:560px){.header-cta{display:none}}
.nav-toggle{width:42px;height:42px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;border:1px solid var(--line);border-radius:var(--r-sm);background:transparent;cursor:pointer;transition:border-color .2s ease}
.nav-toggle:hover{border-color:var(--line-strong)}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-2);transition:background .2s ease}
@media(min-width:1024px){.nav-toggle{display:none}}
.mobile-drawer{display:none;position:fixed;left:0;right:0;top:68px;bottom:0;z-index:55;padding:24px 20px 44px;background:rgba(10,15,13,.98);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);overflow-y:auto}
.mobile-drawer.open{display:block}
.mobile-drawer .d-link{display:block;margin-bottom:10px;padding:15px 16px;border-left:2px solid var(--primary);border-radius:0 var(--r-sm) var(--r-sm) 0;background:rgba(255,255,255,.03);font-size:1.05rem;color:var(--text)}
.mobile-drawer .d-link.active{color:var(--primary)}
.mobile-drawer .d-cta{margin-top:16px;width:100%}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;border:1px solid transparent;border-radius:var(--r-sm);font-size:.95rem;font-weight:600;text-align:center;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .2s ease,color .2s ease,border-color .2s ease,filter .18s ease}
.btn-primary{background:var(--grad);color:var(--ink)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 10px 26px rgba(184,240,60,.18)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-2)}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--primary);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:.85rem}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:3px}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--pill);border:1px solid rgba(184,240,60,.18);background:rgba(184,240,60,.10);color:var(--primary);font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;white-space:nowrap}
.badge-cyan{border-color:rgba(60,224,192,.2);background:rgba(60,224,192,.10);color:var(--cyan)}
.badge-orange{border-color:rgba(255,122,69,.22);background:rgba(255,122,69,.10);color:var(--orange)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}

/* 页头 */
.page-hero{position:relative;overflow:hidden;padding:clamp(44px,6vw,84px) 0 clamp(36px,4.6vw,60px);background-color:var(--panel);background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(165deg,rgba(10,15,13,.88),rgba(10,15,13,.95) 58%,#0A0F0D)}
.page-hero::after{content:"";position:absolute;right:-12%;top:-38%;width:520px;height:520px;background:radial-gradient(circle,rgba(184,240,60,.16),transparent 65%);pointer-events:none}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:18px;font-family:var(--mono);font-size:.74rem;letter-spacing:.08em;color:var(--text-3)}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .current{color:var(--primary)}
.page-title{font-size:clamp(1.85rem,4vw,2.9rem);font-weight:800;line-height:1.2;letter-spacing:-.02em;max-width:900px}
.page-lead{margin-top:18px;max-width:760px;color:var(--text-2);font-size:1rem;line-height:1.85}
.page-hero .tag-row{margin-top:22px}

.stat-strip{display:grid;grid-template-columns:1fr;gap:16px;margin-top:30px;padding-top:20px;border-top:1px solid var(--line)}
@media(min-width:640px){.stat-strip{grid-template-columns:repeat(3,1fr)}}
.stat-num{font-family:var(--mono);font-size:1.4rem;color:var(--primary);line-height:1.3}
.stat-label{font-size:.82rem;color:var(--text-3)}

/* 板块 */
.section{padding:clamp(48px,6vw,88px) 0}
.section-tight{padding:clamp(34px,4vw,60px) 0}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:clamp(24px,3vw,38px)}
.sec-title{font-size:clamp(1.4rem,2.4vw,2rem);font-weight:700;line-height:1.3;letter-spacing:-.01em}
.sec-sub{margin-top:10px;max-width:760px;color:var(--text-2);font-size:.95rem}

/* 答疑分组 */
.q-group{padding:clamp(26px,3vw,40px) 0;border-top:1px solid var(--line)}
.q-group:first-of-type{border-top:none;padding-top:0}
.q-group-head{display:flex;gap:16px;align-items:flex-start;margin-bottom:20px}
.q-index{flex:0 0 auto;font-family:var(--mono);font-size:.82rem;letter-spacing:.12em;color:var(--orange);padding-top:5px}
.q-group-title{font-size:clamp(1.12rem,1.7vw,1.4rem);font-weight:700;line-height:1.4}
.q-group-desc{margin-top:6px;color:var(--text-3);font-size:.88rem}
.q-list{display:grid;grid-template-columns:1fr;gap:14px}
@media(min-width:820px){.q-list{grid-template-columns:repeat(2,1fr)}}
.q-item{position:relative;padding:16px 18px 16px 20px;border:1px solid var(--line);border-radius:14px;background:var(--card);box-shadow:var(--shadow);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.q-item::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;border-radius:2px;background:rgba(255,255,255,.08);transition:background .2s ease}
.q-item:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:0 0 0 1px rgba(184,240,60,.18)}
.q-item:hover::before{background:var(--grad)}
.q-item-title{display:flex;gap:10px;align-items:baseline;font-size:1.02rem;font-weight:600;line-height:1.5}
.q-dot{flex:0 0 auto;width:7px;height:7px;margin-top:8px;border-radius:2px;background:var(--primary);transform:rotate(45deg)}
.q-item-text{margin-top:8px;color:var(--text-2);font-size:.93rem;line-height:1.72}
.q-item .tag-row{margin-top:12px}

/* 问答面板 */
.qa-panel-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media(min-width:900px){.qa-panel-grid{grid-template-columns:repeat(2,1fr)}}
.qa-panel{position:relative;overflow:hidden;padding:22px 24px 24px;border:1px solid var(--line);border-radius:var(--r);background:var(--panel)}
.qa-panel::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--grad)}
.qa-panel .qa-tag{font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;color:var(--cyan)}
.qa-panel h3{margin-top:10px;font-size:1.05rem;font-weight:600;line-height:1.55}
.qa-panel p{margin-top:10px;color:var(--text-2);font-size:.94rem;line-height:1.78}

/* 图文块 */
.figure-grid{display:grid;grid-template-columns:1fr;gap:28px}
@media(min-width:1024px){.figure-grid{grid-template-columns:1.02fr .98fr;align-items:center;gap:40px}}
.figure-card{overflow:hidden;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--card)}
.figure-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#0E1513}
.figure-media img{width:100%;height:100%;object-fit:cover}
.figure-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,15,13,.18),rgba(10,15,13,.72))}
.figure-cap{padding:14px 18px;color:var(--text-3);font-size:.82rem}
.check-list li{position:relative;padding-left:22px;color:var(--text-2);font-size:.95rem;line-height:1.8}
.check-list li+li{margin-top:10px}
.check-list li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--primary);transform:rotate(45deg)}

/* CTA */
.cta-panel{display:grid;grid-template-columns:1fr;gap:24px;padding:clamp(26px,3.4vw,44px);border:1px solid var(--line-strong);border-radius:var(--r-lg);background:linear-gradient(180deg,#121A17,#0E1513)}
@media(min-width:1024px){.cta-panel{grid-template-columns:1.05fr .95fr;align-items:center;gap:32px}}
.cta-title{margin-top:10px;font-size:clamp(1.24rem,2.1vw,1.7rem);font-weight:700;line-height:1.35}
.cta-desc{margin-top:12px;color:var(--text-2);font-size:.95rem}
.sub-form{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:640px){.sub-form{grid-template-columns:1fr auto}}
.sub-input{min-height:48px;padding:13px 16px;border:1px solid var(--line);border-radius:var(--r-sm);background:#0E1513;color:var(--text);transition:border-color .2s ease,box-shadow .2s ease}
.sub-input::placeholder{color:var(--text-3)}
.sub-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(184,240,60,.18)}
.form-note{margin-top:12px;color:var(--text-3);font-size:.8rem;line-height:1.7}

/* FAQ */
.qa{border-top:1px solid var(--line)}
.qa:last-of-type{border-bottom:1px solid var(--line)}
.qa[open]{position:relative}
.qa[open]::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--grad)}
.qa summary{display:flex;gap:14px;align-items:flex-start;padding:20px 6px 20px 14px;cursor:pointer;font-size:1.02rem;font-weight:600;line-height:1.6;list-style:none}
.qa summary::-webkit-details-marker{display:none}
.qa summary:focus-visible{outline:2px solid var(--primary);outline-offset:-2px}
.qa-mark{position:relative;flex:0 0 16px;width:16px;height:16px;margin-top:7px}
.qa-mark::before,.qa-mark::after{content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;transform:translate(-50%,-50%)}
.qa-mark::before{width:14px;height:2px}
.qa-mark::after{width:2px;height:14px;transition:transform .22s ease,opacity .22s ease}
.qa[open] .qa-mark::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.qa-a{padding:0 6px 22px 44px;color:var(--text-2);font-size:.95rem;line-height:1.85}

/* 页脚 */
.site-footer{position:relative;margin-top:clamp(44px,5vw,72px);padding:clamp(40px,5vw,64px) 0 24px;border-top:1px solid var(--line);background:var(--panel)}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:var(--grad)}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:28px}}
.footer-title{margin-bottom:14px;font-family:var(--mono);font-size:.75rem;letter-spacing:.12em;color:var(--primary)}
.footer-link{display:block;padding:5px 0;color:var(--text-2);font-size:.9rem;transition:color .2s ease,transform .2s ease}
.footer-link:hover{color:var(--primary);transform:translateX(2px)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:36px;padding-top:18px;border-top:1px solid var(--line);color:var(--text-3);font-size:.82rem}
.mono{font-family:var(--mono);letter-spacing:.08em}

/* 滚动进入 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .q-item,.btn,.nav-link,.footer-link{transition:none}
  .q-item:hover,.btn-primary:hover,.btn-ghost:hover,.footer-link:hover{transform:none}
}