/* roulang page: index */
:root{
  --ink-950:#08090B;
  --ink-900:#0C0D10;
  --ink-850:#121417;
  --ink-800:#1A1D21;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#ECEDEF;
  --text-2:#A2A5AC;
  --text-3:#6E727A;
  --accent:#C7F14C;
  --accent-ink:#0C0D10;
  --accent-2:#6F5BFF;
  --ok:#4CD98A;
  --warn:#FFB020;
  --danger:#FF5F56;
  --r-sm:8px;
  --r-lg:18px;
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
h1,h2,h3,h4,p,dl,dd,figure{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:var(--accent);color:var(--accent-ink)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--ink-900)}
::-webkit-scrollbar-thumb{background:#1F2328;border-radius:999px}
::-webkit-scrollbar-thumb:hover{background:#2A2F35}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:40px;padding-right:40px}
@media (min-width:1536px){.container{max-width:1360px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(12,13,16,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{max-width:1360px;margin:0 auto;padding:0 40px;height:64px;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:28px;height:28px;border-radius:8px;background:var(--accent);display:grid;place-items:center;color:var(--accent-ink);flex:none}
.brand-text{font-size:15px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:22px;margin-left:10px}
.nav-link{position:relative;font-size:14px;font-weight:500;color:var(--text-2);padding:6px 0;transition:color .18s var(--ease);white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease)}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active::before{content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);width:4px;height:4px;border-radius:50%;background:var(--accent)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.cmd-search{display:flex;align-items:center;gap:8px;width:240px;height:36px;padding:0 10px;border-radius:var(--r-sm);background:rgba(255,255,255,.04);border:1px solid var(--line);transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}
.cmd-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px rgba(199,241,76,.18)}
.cmd-search svg{flex:none;color:var(--text-3)}
.cmd-search input{flex:1;min-width:0;background:transparent;border:0;outline:none;font-size:13px;color:var(--text)}
.cmd-search input::placeholder{color:var(--text-3)}
.kbd{font-size:11px;color:var(--text-3);border:1px solid var(--line);border-radius:4px;padding:1px 5px;line-height:1.4;flex:none}
.icon-btn{width:36px;height:36px;border-radius:var(--r-sm);border:1px solid var(--line);display:grid;place-items:center;color:var(--text-2);transition:all .18s var(--ease)}
.icon-btn:hover{color:var(--text);border-color:var(--line-strong);background:var(--ink-800)}
.menu-btn{display:none;width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--line);align-items:center;justify-content:center;color:var(--text)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-sm);font-size:14px;font-weight:700;border:1px solid transparent;transition:all .18s var(--ease);white-space:nowrap;cursor:pointer}
.btn-primary{background:var(--accent);color:var(--accent-ink)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 10px 24px -12px rgba(199,241,76,.5)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-secondary{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-secondary:hover{border-color:var(--accent);color:var(--accent)}
.btn-ghost{background:transparent;color:var(--text);padding:0 8px}
.btn-ghost svg{transition:transform .18s var(--ease)}
.btn-ghost:hover svg{transform:translateX(4px)}
.btn-lg{height:48px;padding:0 26px;font-size:15px}

/* ---------- 移动抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:120;background:var(--ink-900);transform:translateX(100%);transition:transform .24s var(--ease);display:flex;flex-direction:column}
.drawer.is-open{transform:translateX(0)}
.drawer-top{height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 20px;border-bottom:1px solid var(--line);flex:none}
.drawer-nav{flex:1;overflow-y:auto;padding:8px 0}
.drawer-nav a{display:flex;align-items:center;height:56px;padding:0 20px;font-size:16px;font-weight:500;color:var(--text-2);border-bottom:1px solid var(--line)}
.drawer-nav a.is-active{color:var(--accent)}
.drawer-foot{padding:16px 20px 28px;border-top:1px solid var(--line);flex:none}
.drawer-foot .btn{width:100%}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;min-height:78vh;display:flex;align-items:center;border-bottom:1px solid var(--line)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.55}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(8,9,11,.94) 0%,rgba(8,9,11,.78) 48%,rgba(8,9,11,.6) 100%)}
.hero-beams{position:absolute;inset:0;pointer-events:none;z-index:2}
.hero-beams span{position:absolute;top:-12%;height:124%;width:1px;background:linear-gradient(180deg,transparent,rgba(199,241,76,.9),transparent);opacity:.16;animation:beamDrift 18s linear infinite}
.hero-beams span:nth-child(1){left:14%}
.hero-beams span:nth-child(2){left:47%;animation-delay:-6s;opacity:.12}
.hero-beams span:nth-child(3){left:76%;animation-delay:-12s;opacity:.14}
@keyframes beamDrift{0%{transform:translateY(-6%)}50%{transform:translateY(6%)}100%{transform:translateY(-6%)}}
.hero-inner{position:relative;z-index:3;padding-top:96px;padding-bottom:96px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--text-2)}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
.hero-title{font-size:clamp(34px,5.2vw,64px);font-weight:900;line-height:1.08;letter-spacing:-.03em;margin-top:18px;max-width:15em}
.hero-sub{color:var(--text-2);font-size:17px;margin-top:20px;max-width:32em}
.hero-actions{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero-stats{display:flex;gap:56px;margin-top:56px;flex-wrap:wrap}
.hero-stats dt{font-size:28px;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.hero-stats dd{margin-top:4px;font-size:12px;letter-spacing:.08em;color:var(--text-3)}
.hero-stats > div{position:relative;padding-left:16px}
.hero-stats > div::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:2px;background:var(--line-strong)}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0;border-bottom:1px solid var(--line)}
.section-alt{background:var(--ink-950)}
.section-head{margin-bottom:48px;max-width:820px}
.section-head h2{font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:-.02em;line-height:1.2;position:relative;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:.24em;width:4px;height:.86em;border-radius:2px;background:var(--accent)}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15px}
.section-head.row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.link-more{font-size:14px;font-weight:600;color:var(--text-2);white-space:nowrap;transition:color .18s var(--ease)}
.link-more:hover{color:var(--accent)}

/* ---------- 编号条目 ---------- */
.modes-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:64px}
.mode-item{display:flex;gap:24px;padding:30px 0;border-bottom:1px solid var(--line)}
.mode-item:nth-last-child(-n+2){border-bottom:0}
.mode-num{font-size:56px;font-weight:800;line-height:1;letter-spacing:-.04em;color:transparent;-webkit-text-stroke:1px rgba(199,241,76,.45);flex:none;font-variant-numeric:tabular-nums}
.mode-item h3{font-size:19px;font-weight:700;margin-bottom:8px}
.mode-item p{color:var(--text-2);font-size:14px;line-height:1.7;max-width:46ch}

/* ---------- 卡片 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card-grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{position:relative;background:var(--ink-850);border:1px solid var(--line);border-radius:var(--r-lg);padding:20px;display:flex;flex-direction:column;gap:12px;box-shadow:inset 0 1px 0 rgba(255,255,255,.04);transition:border-color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease)}
.card:hover{border-color:rgba(199,241,76,.35);box-shadow:0 24px 48px -28px rgba(199,241,76,.18);transform:translateY(-2px)}
.card-cover{position:relative;aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:var(--ink-800);border:1px solid var(--line)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.card:hover .card-cover img{transform:scale(1.04)}
.card h3{font-size:17px;font-weight:700;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card h3 a{transition:color .18s var(--ease)}
.card h3 a:hover{color:var(--accent)}
.card-desc{font-size:14px;line-height:1.7;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}
.card-foot time{font-variant-numeric:tabular-nums}
.card-link{font-weight:600;color:var(--text-2);display:inline-flex;align-items:center;gap:6px;transition:color .18s var(--ease)}
.card-link:hover{color:var(--accent)}
.card-link svg{transition:transform .18s var(--ease)}
.card-link:hover svg{transform:translateX(4px)}
.reward-card .card-cover{aspect-ratio:4/3}
.card-value{font-size:24px;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:var(--accent)}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.04em}
.badge-soft{background:rgba(255,255,255,.05);color:var(--text-2);border:1px solid var(--line)}
.badge-pos{position:absolute;top:12px;right:12px;height:22px;border-radius:6px;background:rgba(199,241,76,.14);color:var(--accent);padding:0 8px;display:inline-flex;align-items:center;font-size:12px;font-weight:600;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.badge a{color:inherit}

/* ---------- 进度面板 ---------- */
.panel{background:var(--ink-850);border:1px solid var(--line);border-radius:var(--r-lg);padding:6px 24px;box-shadow:inset 0 1px 0 rgba(255,255,255,.04)}
.task-row{display:grid;grid-template-columns:minmax(0,240px) 1fr 64px;align-items:center;gap:28px;padding:22px 0;border-bottom:1px solid var(--line)}
.task-row:last-child{border-bottom:0}
.task-main{display:flex;flex-direction:column;gap:6px}
.task-name{font-size:15px;font-weight:600}
.chip{align-self:flex-start;font-size:12px;font-weight:600;padding:2px 8px;border-radius:6px;letter-spacing:.04em}
.chip-ok{background:rgba(76,217,138,.12);color:var(--ok)}
.chip-warn{background:rgba(255,176,32,.12);color:var(--warn)}
.chip-idle{background:rgba(255,255,255,.06);color:var(--text-3)}
.task-track{height:6px;border-radius:999px;background:#1C1F24;overflow:hidden}
.task-fill{height:100%;width:0;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width .9s var(--ease)}
.task-pct{font-size:13px;color:var(--text-2);text-align:right;font-variant-numeric:tabular-nums}

/* ---------- CTA 带 ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--ink-950);border-bottom:1px solid var(--line)}
.cta-band::before{content:"";position:absolute;inset:0;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:44px 44px;opacity:.55;pointer-events:none}
.cta-band::after{content:"";position:absolute;right:-120px;top:-140px;width:440px;height:440px;background:radial-gradient(circle,rgba(199,241,76,.14),transparent 65%);pointer-events:none}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;padding-top:72px;padding-bottom:72px}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;letter-spacing:-.02em;line-height:1.25}
.cta-inner p{color:var(--text-2);font-size:15px;margin-top:10px;max-width:34ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 空态 ---------- */
.empty-state{border:1px dashed var(--line-strong);border-radius:var(--r-lg);padding:56px 24px;text-align:center;color:var(--text-2);background:rgba(255,255,255,.015)}
.empty-state svg{margin:0 auto 16px;color:var(--text-3)}
.empty-state p{font-size:14px}
.empty-state .btn{margin-top:20px}

/* ---------- FAQ ---------- */
.faq-list{max-width:760px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:60px;padding:16px 0;cursor:pointer;font-size:16px;font-weight:600;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;flex:none;width:20px;height:20px;color:var(--accent)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-icon::before{left:2px;right:2px;top:50%;height:2px;margin-top:-1px}
.faq-icon::after{top:2px;bottom:2px;left:50%;width:2px;margin-left:-1px;transition:transform .24s var(--ease),opacity .24s var(--ease)}
details[open] .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-answer{font-size:14px;line-height:1.8;color:var(--text-2);padding-bottom:22px;max-width:66ch}

/* ---------- 页脚 ---------- */
.site-footer{background:#0A0B0D;border-top:1px solid rgba(199,241,76,.12)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding:72px 0 48px}
.footer-col h4{font-size:13px;font-weight:600;letter-spacing:.08em;margin-bottom:18px;color:var(--text)}
.footer-col a,.footer-col p{display:block;font-size:14px;color:var(--text-2);margin-bottom:10px;transition:color .18s var(--ease)}
.footer-col a:hover{color:var(--text)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-bottom{border-top:1px solid var(--line);padding:24px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-3)}
.footer-bottom .domain{font-variant-numeric:tabular-nums}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .nav-inner{padding:0 28px;gap:16px}
  .brand-text{font-size:14px}
  .nav-links{gap:18px}
  .cmd-search{width:190px}
  .container{padding-left:32px;padding-right:32px}
}
@media (max-width:1024px){
  .nav-links,.cmd-search{display:none}
  .menu-btn{display:flex}
  .card-grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .hero{min-height:auto}
  .hero-inner{padding-top:72px;padding-bottom:72px}
}
@media (max-width:900px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .modes-grid{grid-template-columns:1fr}
  .mode-item:nth-last-child(-n+2){border-bottom:1px solid var(--line)}
  .mode-item:last-child{border-bottom:0}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px}
  .cta-actions{width:100%}
}
@media (max-width:768px){
  .container{padding-left:20px;padding-right:20px}
  .nav-inner{padding:0 20px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .card-grid,.card-grid-4{grid-template-columns:1fr}
  .task-row{grid-template-columns:1fr 56px;gap:12px 16px}
  .task-main{grid-column:1 / -1}
  .task-pct{grid-column:2;grid-row:2}
  .panel{padding:6px 18px}
  .hero-stats{gap:32px;margin-top:40px}
  .hero-title{max-width:none}
  .footer-grid{grid-template-columns:1fr;padding:56px 0 32px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:640px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .mode-num{font-size:44px}
  .nav-right .icon-btn{display:none}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --ink-950:#08090B;
  --ink-900:#0C0D10;
  --ink-850:#121417;
  --ink-800:#1A1D21;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#ECEDEF;
  --text-2:#A2A5AC;
  --text-3:#6E727A;
  --accent:#C7F14C;
  --accent-ink:#0C0D10;
  --accent-2:#6F5BFF;
  --ok:#4CD98A;
  --warn:#FFB020;
  --danger:#FF5F56;
  --ease:cubic-bezier(.2,.8,.2,1);
  --r-sm:8px;
  --r-lg:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,figure{margin:0}
ul{padding:0;list-style:none}
::selection{background:var(--accent);color:var(--accent-ink)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--ink-950)}
::-webkit-scrollbar-thumb{background:#24272C;border-radius:999px;border:2px solid var(--ink-950)}
::-webkit-scrollbar-thumb:hover{background:#34383E}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.tabular{font-variant-numeric:tabular-nums}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(12,13,16,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:1360px;margin:0 auto;height:64px;
  padding:0 40px;display:flex;align-items:center;gap:18px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:30px;height:30px;border-radius:8px;background:var(--accent);color:var(--accent-ink);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-text{font-size:15px;font-weight:700;letter-spacing:-.01em;color:var(--text);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:2px;margin:0 auto}
.nav-link{
  position:relative;display:inline-block;
  padding:9px 12px 11px;font-size:14px;font-weight:500;color:var(--text-2);
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left center;
  transition:transform .18s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active::before{
  content:"";position:absolute;left:1px;top:50%;margin-top:-2px;
  width:4px;height:4px;border-radius:999px;background:var(--accent);
}
.nav-right{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.cmd-search{
  display:flex;align-items:center;gap:8px;width:236px;height:36px;
  padding:0 8px 0 10px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--text-3);transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.cmd-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px rgba(199,241,76,.18)}
.cmd-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:13px;color:var(--text);
}
.cmd-search input::placeholder{color:var(--text-3)}
.kbd{
  font-size:11px;line-height:1;padding:4px 5px;border-radius:5px;
  border:1px solid var(--line-strong);color:var(--text-3);letter-spacing:.02em;
}
.icon-btn{
  width:36px;height:36px;border-radius:var(--r-sm);border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--text-2);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.icon-btn:hover{color:var(--accent);border-color:rgba(199,241,76,.4)}
.menu-btn{
  display:none;width:36px;height:36px;border-radius:var(--r-sm);
  border:1px solid var(--line);align-items:center;justify-content:center;color:var(--text);
}
.menu-btn:hover{border-color:var(--line-strong)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:14px;font-weight:700;letter-spacing:.01em;
  transition:transform .18s var(--ease),filter .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-primary{background:var(--accent);color:var(--accent-ink)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 10px 24px -12px rgba(199,241,76,.5)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{background:transparent;border:1px solid var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-lg{height:48px;padding:0 26px}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--accent)}
.link-arrow svg{transition:transform .18s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ============ 抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:70;background:var(--ink-900);
  display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .24s var(--ease);
  visibility:hidden;
}
.drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-head{
  height:64px;display:flex;align-items:center;justify-content:space-between;
  padding:0 20px;border-bottom:1px solid var(--line);flex:0 0 auto;
}
.drawer-links{flex:1 1 auto;overflow-y:auto;padding:12px 20px}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:16px;font-weight:500;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.drawer-links a.is-active{color:var(--accent)}
.drawer-foot{padding:16px 20px 28px;flex:0 0 auto}
.drawer-foot .btn{width:100%}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;display:flex;align-items:center;
  min-height:38vh;padding:72px 0 64px;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(8,9,11,.94) 0%,rgba(8,9,11,.78) 46%,rgba(8,9,11,.56) 100%);
}
.hero-seam{
  position:absolute;top:-10%;height:120%;width:1px;
  background:linear-gradient(180deg,transparent,var(--accent) 45%,transparent);
  opacity:.16;pointer-events:none;
}
.hero-seam.s1{left:18%}
.hero-seam.s2{left:54%;opacity:.12}
.hero-seam.s3{left:82%;opacity:.18}
.hero-inner{position:relative;z-index:2;width:100%}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.crumb a{color:var(--text-3);transition:color .18s var(--ease)}
.crumb a:hover{color:var(--accent)}
.crumb span.sep{color:#3A3E45}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;
  background:rgba(199,241,76,.12);color:var(--accent);
  font-size:12px;font-weight:600;letter-spacing:.08em;
}
.hero h1{
  margin-top:20px;
  font-size:clamp(30px,4.6vw,54px);font-weight:900;line-height:1.12;letter-spacing:-.03em;
  max-width:20ch;
}
.hero-sub{margin-top:18px;font-size:16px;line-height:1.7;color:var(--text-2);max-width:36ch}
.hero-meta{display:flex;flex-wrap:wrap;gap:14px 32px;margin-top:30px}
.hero-meta div{display:flex;align-items:baseline;gap:8px}
.hero-meta .num{font-size:26px;font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.hero-meta .lab{font-size:12px;color:var(--text-3);letter-spacing:.06em}
.chip-row{display:flex;gap:10px;overflow-x:auto;padding:26px 0 4px;scrollbar-width:thin}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  height:36px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line-strong);color:var(--text-2);
  font-size:13px;font-weight:500;white-space:nowrap;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.chip:hover{color:var(--text);border-color:rgba(199,241,76,.45);background:rgba(199,241,76,.06)}
.chip .dot{width:5px;height:5px;border-radius:999px;background:var(--accent)}

/* ============ 板块 ============ */
.section{padding:96px 0}
.section + .section{border-top:1px solid var(--line)}
.section-tight{padding:72px 0}
.section-title{
  display:flex;align-items:center;gap:12px;
  font-size:clamp(22px,2.4vw,30px);font-weight:800;line-height:1.2;letter-spacing:-.02em;
}
.section-title::before{
  content:"";flex:0 0 auto;width:4px;height:22px;border-radius:2px;background:var(--accent);
}
.section-lead{margin-top:14px;font-size:15px;line-height:1.7;color:var(--text-2);max-width:56ch}
.eyebrow-row{margin-bottom:16px}
.num-badge{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:30px;height:30px;padding:0 8px;border-radius:6px;
  border:1px solid var(--line-strong);color:var(--text-2);
  font-size:12px;font-weight:600;letter-spacing:.08em;font-variant-numeric:tabular-nums;
}

/* 图文交错 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split + .split{margin-top:80px;padding-top:80px;border-top:1px solid var(--line)}
.split--flip .split-media{order:-1}
.split h2{
  font-size:clamp(20px,2.2vw,27px);font-weight:800;line-height:1.25;letter-spacing:-.02em;
  display:flex;align-items:center;gap:12px;
}
.split h2::before{content:"";flex:0 0 auto;width:4px;height:20px;border-radius:2px;background:var(--accent)}
.split p{margin-top:16px;font-size:16px;line-height:1.8;color:var(--text-2);max-width:52ch}
.media-frame{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);background:var(--ink-850);
  aspect-ratio:16/10;box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.media-frame:hover{border-color:rgba(199,241,76,.35);box-shadow:0 24px 48px -28px rgba(199,241,76,.18)}
.media-frame:hover img{transform:scale(1.04)}
.media-tag{
  position:absolute;left:16px;bottom:16px;
  padding:5px 11px;border-radius:999px;
  background:rgba(8,9,11,.72);border:1px solid var(--line-strong);
  font-size:12px;color:var(--text-2);letter-spacing:.04em;
}
.check-list{margin-top:22px;display:grid;gap:12px}
.check-list li{position:relative;padding-left:20px;font-size:15px;line-height:1.75;color:var(--text-2)}
.check-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:2px;background:var(--accent);
}
.check-list li b{color:var(--text);font-weight:600}

/* 提示面板 */
.note-panel{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  margin-top:44px;
}
.note-panel div{background:var(--ink-850);padding:24px}
.note-panel .k{font-size:12px;letter-spacing:.08em;color:var(--text-3)}
.note-panel .v{margin-top:8px;font-size:15px;line-height:1.7;color:var(--text-2)}

/* 相关分类 */
.related-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.related-row a{
  display:inline-flex;align-items:center;gap:10px;
  height:44px;padding:0 18px;border-radius:var(--r-sm);
  border:1px solid var(--line);color:var(--text-2);font-size:14px;font-weight:500;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.related-row a:hover{color:var(--text);border-color:rgba(199,241,76,.4);background:rgba(199,241,76,.05)}
.related-row svg{transition:transform .18s var(--ease)}
.related-row a:hover svg{transform:translateX(3px)}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  padding:48px 48px;border-radius:var(--r-lg);
  background:var(--ink-850);border:1px solid var(--line);
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.5;pointer-events:none;
  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:48px 48px;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;pointer-events:none;
  background:radial-gradient(circle,rgba(199,241,76,.14),transparent 68%);
}
.cta-text{position:relative;z-index:2}
.cta-text h2{font-size:clamp(20px,2.2vw,28px);font-weight:800;letter-spacing:-.02em;line-height:1.25}
.cta-text p{margin-top:12px;font-size:15px;color:var(--text-2);max-width:40ch}
.cta-actions{position:relative;z-index:2;display:flex;gap:12px;flex:0 0 auto}

/* ============ 页脚 ============ */
.site-footer{background:#0A0B0D;border-top:1px solid rgba(199,241,76,.12);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-col h4{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--text);margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:var(--text-2);padding:5px 0;transition:color .18s var(--ease)}
.footer-col a:hover{color:var(--text)}
.footer-col p{font-size:14px;line-height:1.7;color:var(--text-2);margin-bottom:8px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;
}
.footer-bottom .domain{color:var(--text-3)}

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

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .brand-text{font-size:14px}
  .cmd-search{width:200px}
}
@media (max-width:1023px){
  .nav-links,.cmd-search,.icon-btn,.nav-right > .btn{display:none}
  .menu-btn{display:inline-flex}
  .nav-inner{padding:0 20px;justify-content:space-between}
  .section{padding:64px 0}
  .section-tight{padding:52px 0}
  .split{gap:36px}
  .split + .split{margin-top:56px;padding-top:56px}
  .cta-band{padding:36px 28px;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .note-panel{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .split{grid-template-columns:1fr;gap:26px}
  .split--flip .split-media{order:0}
  .media-frame{aspect-ratio:16/9}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .hero{padding:56px 0 44px;min-height:auto}
  .hero h1{max-width:none}
  .hero-sub{max-width:none}
  .section{padding:56px 0}
  .section-lead{font-size:14px}
  .note-panel{grid-template-columns:1fr;margin-top:32px}
  .related-row a{width:100%;justify-content:space-between}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:520px){
  .brand-text{font-size:13px;letter-spacing:0}
  .hero-meta{gap:12px 22px}
  .hero-meta .num{font-size:22px}
  .cta-band{padding:28px 20px}
}

/* roulang page: article */
:root{
  --ink-950:#08090B; --ink-900:#0C0D10; --ink-850:#121417; --ink-800:#1A1D21;
  --line:rgba(255,255,255,.08); --line-strong:rgba(255,255,255,.16);
  --text:#ECEDEF; --text-2:#A2A5AC; --text-3:#6E727A;
  --accent:#C7F14C; --accent-ink:#0C0D10; --accent-2:#6F5BFF;
  --ok:#4CD98A; --warn:#FFB020; --danger:#FF5F56;
  --r-btn:8px; --r-card:18px; --r-pill:999px;
  --ease:cubic-bezier(.2,.8,.2,1);
  --container:1200px;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;}
::selection{background:var(--accent);color:var(--accent-ink);}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--ink-950);}
::-webkit-scrollbar-thumb{background:#24282E;border-radius:999px;border:2px solid var(--ink-950);}
::-webkit-scrollbar-thumb:hover{background:#33383F;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;
}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:14px;font-weight:700;letter-spacing:.01em;white-space:nowrap;cursor:pointer;
  transition:background-color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease);
}
.btn-primary{background:var(--accent);color:var(--accent-ink);}
.btn-primary:hover{background:#D4F96A;transform:translateY(-1px);box-shadow:0 10px 24px -12px rgba(199,241,76,.5);}
.btn-primary:active{transform:translateY(0);background:#B9E33C;box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text);}
.btn-ghost:hover{border-color:rgba(199,241,76,.55);color:var(--text);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-lg{height:48px;padding:0 26px;font-size:15px;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;height:auto;padding:0;border:0;background:none;
  color:var(--accent);font-size:14px;font-weight:600;
}
.btn-link svg{transition:transform .18s var(--ease);}
.btn-link:hover svg{transform:translateX(4px);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(12,13,16,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:var(--container);margin:0 auto;height:64px;padding:0 40px;
  display:flex;align-items:center;gap:18px;
}
.brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.brand-mark{
  width:28px;height:28px;border-radius:8px;flex:none;
  background:var(--accent);color:var(--accent-ink);
  display:grid;place-items:center;
}
.brand-text{display:inline-block;}

.nav-links{display:flex;align-items:center;gap:2px;margin-left:10px;}
.nav-link{
  position:relative;display:inline-block;padding:8px 11px;border-radius:6px;
  font-size:14px;font-weight:500;color:var(--text-2);transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:11px;right:11px;bottom:3px;height:2px;border-radius:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--text);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active::before{
  content:"";position:absolute;left:0;top:50%;width:4px;height:4px;margin-top:-2px;border-radius:50%;background:var(--accent);
}

.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.cmd-search{
  display:flex;align-items:center;gap:8px;width:236px;height:36px;padding:0 10px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:8px;color:var(--text-3);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.cmd-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px rgba(199,241,76,.18);}
.cmd-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:13px;color:var(--text);}
.cmd-search input::placeholder{color:var(--text-3);}
.kbd{
  width:20px;height:20px;flex:none;display:grid;place-items:center;
  font-size:11px;line-height:1;color:var(--text-3);
  border:1px solid var(--line);border-radius:5px;background:rgba(255,255,255,.03);
}
.icon-btn{
  width:36px;height:36px;flex:none;display:grid;place-items:center;
  border:1px solid var(--line);border-radius:8px;color:var(--text-2);
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.icon-btn:hover{color:var(--text);border-color:var(--line-strong);background:var(--ink-800);}
.menu-btn{
  display:none;width:38px;height:38px;flex:none;place-items:center;
  border:1px solid var(--line);border-radius:8px;background:transparent;color:var(--text);cursor:pointer;
}
.menu-btn:hover{border-color:var(--line-strong);}

/* ============ 移动抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--ink-900);
  display:flex;flex-direction:column;
  transform:translateX(100%);visibility:hidden;
  transition:transform .24s var(--ease),visibility .24s var(--ease);
}
.drawer.is-open{transform:translateX(0);visibility:visible;}
.drawer-top{
  height:64px;flex:none;display:flex;align-items:center;justify-content:space-between;
  padding:0 20px;border-bottom:1px solid var(--line);
}
.drawer-links{flex:1;overflow-y:auto;padding:8px 20px 0;}
.drawer-link{
  display:flex;align-items:center;height:56px;font-size:15px;font-weight:500;
  color:var(--text-2);border-bottom:1px solid var(--line);
}
.drawer-link.is-active{color:var(--accent);}
.drawer-cta{flex:none;padding:16px 20px 28px;}
.drawer-cta .btn{width:100%;}

/* ============ 文章头部 ============ */
.article-head{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(8,9,11,.62),rgba(12,13,16,.95)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.beams{position:absolute;inset:0;pointer-events:none;overflow:hidden;}
.beam{
  position:absolute;top:-20%;width:1px;height:140%;display:block;
  background:linear-gradient(180deg,transparent,rgba(199,241,76,.6),transparent);
  opacity:.16;animation:beamDrift 18s linear infinite;
}
.beam:nth-child(1){left:12%;}
.beam:nth-child(2){left:47%;opacity:.1;animation-delay:-6s;}
.beam:nth-child(3){left:79%;opacity:.13;animation-delay:-12s;}
@keyframes beamDrift{
  0%{transform:translateX(0);}
  50%{transform:translateX(26px);}
  100%{transform:translateX(0);}
}
.article-head-inner{position:relative;padding:44px 40px 52px;max-width:1200px;}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;}
.breadcrumb a{color:var(--text-2);transition:color .18s var(--ease);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:var(--text-3);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;margin-bottom:18px;
  border-radius:var(--r-pill);background:rgba(199,241,76,.12);color:var(--accent);
  font-size:12px;font-weight:600;letter-spacing:.08em;
}
.article-title{
  max-width:840px;
  font-size:clamp(28px,4.4vw,48px);font-weight:900;line-height:1.18;letter-spacing:-.03em;
  margin-bottom:22px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:12px;
  font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;
}
.meta-dot{width:1px;height:12px;background:var(--line-strong);display:inline-block;}

/* ============ 正文布局 ============ */
.article-wrap{padding:56px 40px 72px;max-width:1200px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 296px;gap:56px;align-items:start;}
.article-main{min-width:0;max-width:760px;}
.article-side{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px;}

.side-card{
  background:var(--ink-850);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.side-card:hover{border-color:rgba(199,241,76,.3);}
.side-card h3{font-size:14px;font-weight:700;letter-spacing:.06em;margin-bottom:14px;}
.side-list{list-style:none;display:flex;flex-direction:column;gap:10px;}
.side-list li{position:relative;padding-left:16px;font-size:14px;line-height:1.7;color:var(--text-2);}
.side-list li::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:2px;background:var(--accent);}
.side-links{display:flex;flex-direction:column;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 0;font-size:14px;color:var(--text-2);border-bottom:1px solid var(--line);
  transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.side-links a:last-child{border-bottom:0;}
.side-links a:hover{color:var(--accent);padding-left:4px;}
.side-note{font-size:13px;line-height:1.75;color:var(--text-3);}
.side-badge{
  display:inline-flex;align-items:center;gap:6px;height:22px;padding:0 10px;margin-bottom:12px;
  border-radius:6px;background:rgba(111,91,255,.16);color:#B7ACFF;font-size:12px;font-weight:600;
}

/* ============ 文章正文排版 ============ */
.prose{font-size:17px;line-height:1.9;color:#DCDEE2;}
.prose > * + *{margin-top:24px;}
.prose h2{
  position:relative;padding-left:16px;margin-top:48px;margin-bottom:16px;
  font-size:24px;font-weight:800;line-height:1.35;letter-spacing:-.02em;color:var(--text);
}
.prose h2::before{content:"";position:absolute;left:0;top:.42em;width:3px;height:18px;border-radius:2px;background:var(--accent);}
.prose h3{margin-top:32px;font-size:19px;font-weight:700;line-height:1.4;color:var(--text);}
.prose h4{margin-top:24px;font-size:16px;font-weight:700;color:var(--text);}
.prose a{color:var(--accent);border-bottom:1px solid rgba(199,241,76,.35);}
.prose a:hover{border-bottom-color:var(--accent);}
.prose ul,.prose ol{padding-left:22px;}
.prose ul{list-style:square;}
.prose ol{list-style:decimal;}
.prose ul li::marker{color:var(--accent);}
.prose ol li::marker{color:var(--accent);font-weight:700;}
.prose li{margin:8px 0;line-height:1.85;}
.prose blockquote{
  margin-left:0;margin-right:0;padding:20px 24px;
  border-left:3px solid var(--accent);border-radius:0 12px 12px 0;
  background:rgba(255,255,255,.03);color:var(--text-2);font-size:16px;
}
.prose img{border-radius:12px;margin-left:auto;margin-right:auto;}
.prose figcaption,.prose .wp-caption-text{font-size:13px;line-height:1.7;color:var(--text-3);text-align:center;}
.prose table{width:100%;border-collapse:collapse;font-size:14px;line-height:1.7;}
.prose th,.prose td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.prose th{background:rgba(199,241,76,.1);font-weight:600;color:var(--text);}
.prose pre{
  background:#101216;border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;overflow-x:auto;font-size:13px;line-height:1.7;
}
.prose code{font-family:var(--font-mono);font-size:.92em;color:#D9E6B4;}
.prose hr{border:0;border-top:1px solid var(--line);margin:40px 0;}

/* ============ 空态 ============ */
.empty-state{
  background:var(--ink-850);border:1px solid var(--line);border-radius:var(--r-card);
  padding:56px 32px;text-align:center;
}
.empty-state svg{margin:0 auto 18px;color:var(--accent);}
.empty-state h2{font-size:22px;font-weight:800;margin-bottom:10px;}
.empty-state p{font-size:14px;color:var(--text-2);max-width:420px;margin:0 auto 22px;}

/* ============ 区块标题 ============ */
.section{padding:72px 0;border-top:1px solid var(--line);max-width:1200px;margin:0 auto;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.section-head h2{font-size:28px;font-weight:800;letter-spacing:-.02em;line-height:1.25;}
.section-head p{margin-top:8px;font-size:14px;color:var(--text-2);}
.section-head .all-link{margin-bottom:4px;}

/* ============ 卡片网格 ============ */
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rec-card{
  display:flex;flex-direction:column;gap:12px;padding:20px;
  background:var(--ink-850);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease);
}
.rec-card:hover{border-color:rgba(199,241,76,.35);box-shadow:0 24px 48px -28px rgba(199,241,76,.18);transform:translateY(-2px);}
.card-media{
  display:block;position:relative;aspect-ratio:16/9;border-radius:14px;overflow:hidden;
  border:1px solid var(--line);background:#101216;
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease);}
.rec-card:hover .card-media img{transform:scale(1.04);}
.badge{
  display:inline-flex;align-items:center;align-self:flex-start;height:24px;padding:0 10px;
  border-radius:var(--r-pill);background:rgba(199,241,76,.12);color:var(--accent);
  font-size:12px;font-weight:600;letter-spacing:.06em;
}
.card-title{font-size:17px;font-weight:700;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-text{font-size:14px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;
  padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.card-foot .arrow{color:var(--accent);transition:transform .18s var(--ease);}
.rec-card:hover .card-foot .arrow{transform:translateX(4px);}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-850);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:repeating-linear-gradient(0deg,rgba(255,255,255,.035) 0 1px,transparent 1px 56px),
                   repeating-linear-gradient(90deg,rgba(255,255,255,.035) 0 1px,transparent 1px 56px);
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-120px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(199,241,76,.14),transparent 68%);
}
.cta-inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:56px 40px;max-width:1200px;margin:0 auto;
}
.cta-inner h2{font-size:27px;font-weight:800;letter-spacing:-.02em;line-height:1.3;}
.cta-inner p{margin-top:10px;font-size:14px;color:var(--text-2);}
.cta-actions{display:flex;align-items:center;gap:12px;flex:none;}

/* ============ FAQ ============ */
.faq-list{max-width:760px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:62px;padding:14px 0;font-size:16px;font-weight:600;cursor:pointer;
  list-style:none;transition:color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--accent);}
.faq-icon{
  width:16px;height:16px;flex:none;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;
  color:var(--text-3);transition:transform .24s var(--ease),color .24s var(--ease);
}
.faq-icon .v{transition:opacity .18s var(--ease);}
.faq-item[open] .faq-icon{transform:rotate(180deg);color:var(--accent);}
.faq-item[open] .faq-icon .v{opacity:0;}
.faq-answer{padding:0 0 22px;font-size:14px;line-height:1.8;color:var(--text-2);max-width:680px;}

/* ============ 返回入口 ============ */
.back-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding-bottom:72px;}

/* ============ 页脚 ============ */
.site-footer{background:#0A0B0D;border-top:1px solid rgba(199,241,76,.12);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding:64px 0 40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;font-size:15px;font-weight:800;}
.footer-col h4{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--text);margin-bottom:16px;}
.footer-col a{display:block;padding:6px 0;font-size:14px;color:var(--text-2);transition:color .18s var(--ease);}
.footer-col a:hover{color:var(--text);}
.footer-col p{font-size:14px;line-height:1.7;color:var(--text-2);margin-bottom:8px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 32px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;
}
.domain{color:var(--text-3);}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-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;}
}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .brand-text{font-size:14px;}
  .nav-link{font-size:13px;padding:8px 9px;}
  .cmd-search{width:210px;}
}
@media (max-width:1180px){
  .cmd-search{display:none;}
}
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px;}
  .article-side{position:static;top:auto;order:2;}
  .article-main{max-width:100%;}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .cta-actions{width:100%;}
}
@media (max-width:980px){
  .nav-links{display:none;}
  .menu-btn{display:grid;}
  .nav-inner{padding:0 20px;}
  .nav-right .btn-primary{display:none;}
  .container{padding:0 20px;}
  .article-head-inner{padding:36px 20px 44px;}
  .article-wrap{padding:40px 20px 56px;}
  .cta-inner{padding:48px 20px;}
  .section{padding:56px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px;}
}
@media (max-width:768px){
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .rec-grid{grid-template-columns:minmax(0,1fr);}
  .article-title{font-size:clamp(24px,7vw,34px);}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .back-actions .btn{width:100%;}
  .prose{font-size:16.5px;}
  .prose h2{font-size:21px;}
  .prose h3{font-size:18px;}
}
@media (max-width:520px){
  .brand-text{font-size:13px;letter-spacing:-.02em;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .article-meta{gap:8px;font-size:12px;}
  .meta-dot{display:none;}
  .side-card{padding:16px;}
}

/* roulang page: category2 */
:root{
    --ink-950:#08090B;
    --ink-900:#0C0D10;
    --ink-850:#121417;
    --ink-800:#1A1D21;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.16);
    --text:#ECEDEF;
    --text-2:#A2A5AC;
    --text-3:#6E727A;
    --accent:#C7F14C;
    --accent-ink:#0C0D10;
    --accent-2:#6F5BFF;
    --ok:#4CD98A;
    --warn:#FFB020;
    --danger:#FF5F56;
    --r-btn:8px;
    --r-card:18px;
    --ease:cubic-bezier(.2,.8,.2,1);
    --nav-h:64px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--ink-900);
    color:var(--text);
    font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.75;
    font-variant-numeric:tabular-nums;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button,input{font:inherit;color:inherit}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  ::selection{background:var(--accent);color:var(--accent-ink)}
  ::-webkit-scrollbar{width:10px;height:10px}
  ::-webkit-scrollbar-track{background:var(--ink-900)}
  ::-webkit-scrollbar-thumb{background:#23262b;border-radius:999px;border:2px solid var(--ink-900)}
  ::-webkit-scrollbar-thumb:hover{background:#31353b}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media(min-width:768px){.container{padding:0 40px}}
  @media(min-width:1536px){.container{max-width:1360px}}

  .anchor-alias{display:block;position:relative;top:calc(-1 * var(--nav-h) - 12px);height:0;visibility:hidden}

  /* ============ Header / Nav ============ */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(12,13,16,.72);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .nav-inner{
    max-width:1360px;margin:0 auto;padding:0 20px;
    height:var(--nav-h);display:flex;align-items:center;gap:24px;
  }
  @media(min-width:768px){.nav-inner{padding:0 40px}}
  .brand{display:inline-flex;align-items:center;gap:10px;flex:none}
  .brand-mark{
    width:28px;height:28px;border-radius:8px;flex:none;
    background:var(--accent);color:var(--accent-ink);
    display:inline-flex;align-items:center;justify-content:center;
  }
  .brand-text{font-size:15px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
  @media(max-width:1279px){.brand-text{font-size:13.5px}}
  @media(max-width:359px){.brand-text{font-size:12.5px}}
  .nav-links{display:none;align-items:center;gap:6px;flex:1 1 auto;min-width:0}
  @media(min-width:1024px){.nav-links{display:flex}}
  .nav-link{
    position:relative;padding:8px 10px;border-radius:6px;
    font-size:14px;font-weight:500;color:var(--text-2);
    transition:color 180ms var(--ease);white-space:nowrap;
  }
  .nav-link::after{
    content:"";position:absolute;left:10px;right:10px;bottom:2px;height:2px;
    background:var(--accent);transform:scaleX(0);transform-origin:left center;
    transition:transform 200ms var(--ease);border-radius:2px;
  }
  .nav-link:hover{color:var(--text)}
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.is-active{color:var(--text);font-weight:700}
  .nav-link.is-active::before{
    content:"";position:absolute;left:-2px;top:50%;transform:translateY(-50%);
    width:4px;height:4px;border-radius:999px;background:var(--accent);
  }
  .nav-right{display:flex;align-items:center;gap:10px;margin-left:auto;flex:none}
  .cmd-search{
    display:none;align-items:center;gap:8px;height:36px;padding:0 10px;
    width:230px;border-radius:8px;background:rgba(255,255,255,.04);
    border:1px solid var(--line);color:var(--text-3);
    transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
  }
  @media(min-width:1280px){.cmd-search{display:flex}}
  .cmd-search input{
    flex:1;min-width:0;background:transparent;border:0;outline:none;
    font-size:13.5px;color:var(--text);
  }
  .cmd-search input::placeholder{color:var(--text-3)}
  .cmd-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px rgba(199,241,76,.22)}
  .kbd{
    font-size:11px;line-height:1;padding:4px 5px;border-radius:5px;
    background:var(--ink-800);border:1px solid var(--line);color:var(--text-3);
  }
  .icon-btn{
    display:none;width:36px;height:36px;border-radius:8px;
    align-items:center;justify-content:center;
    border:1px solid var(--line);color:var(--text-2);background:transparent;
    transition:color 180ms var(--ease),border-color 180ms var(--ease),background 180ms var(--ease);
  }
  @media(min-width:1024px){.icon-btn{display:inline-flex}}
  .icon-btn:hover{color:var(--text);border-color:var(--line-strong);background:var(--ink-800)}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;border-radius:var(--r-btn);
    font-size:14.5px;font-weight:700;border:1px solid transparent;
    cursor:pointer;transition:transform 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease),box-shadow 180ms var(--ease);
    white-space:nowrap;
  }
  .btn-primary{background:var(--accent);color:var(--accent-ink)}
  .btn-primary:hover{background:#d3f86c;transform:translateY(-1px);box-shadow:0 10px 24px -12px rgba(199,241,76,.5)}
  .btn-primary:active{transform:translateY(0);background:#b9e341}
  .btn-ghost{background:transparent;color:var(--text);border-color:var(--line-strong)}
  .btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
  .btn-lg{height:48px;padding:0 26px}
  .btn-block{width:100%}

  .menu-btn{
    display:inline-flex;width:36px;height:36px;border-radius:8px;
    align-items:center;justify-content:center;
    background:transparent;border:1px solid var(--line);color:var(--text-2);
    transition:color 180ms var(--ease),border-color 180ms var(--ease);
  }
  .menu-btn:hover{color:var(--text);border-color:var(--line-strong)}
  @media(min-width:1024px){.menu-btn{display:none}}
  @media(max-width:1023px){.nav-right .btn-primary{display:none}}

  /* drawer */
  .drawer{
    position:fixed;inset:0;z-index:90;background:var(--ink-900);
    display:flex;flex-direction:column;
    transform:translateX(100%);transition:transform 240ms var(--ease);
    visibility:hidden;
  }
  .drawer.is-open{transform:translateX(0);visibility:visible}
  .drawer-head{
    height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;
    padding:0 20px;border-bottom:1px solid var(--line);
  }
  .drawer-close{
    width:36px;height:36px;border-radius:8px;background:transparent;
    border:1px solid var(--line);color:var(--text-2);
    display:inline-flex;align-items:center;justify-content:center;
  }
  .drawer-nav{padding:8px 20px;flex:1;overflow-y:auto}
  .drawer-nav a{
    display:flex;align-items:center;height:56px;font-size:16px;font-weight:600;
    color:var(--text-2);border-bottom:1px solid var(--line);
  }
  .drawer-nav a.is-active{color:var(--text)}
  .drawer-foot{padding:16px 20px calc(16px + env(safe-area-inset-bottom));border-top:1px solid var(--line)}

  /* ============ Hero ============ */
  .page-hero{
    position:relative;overflow:hidden;
    min-height:38vh;
    display:flex;align-items:center;
    background-image:linear-gradient(180deg,rgba(8,9,11,.62),rgba(8,9,11,.62)),url("/assets/images/backpic/back-2.webp");
    background-size:cover;background-position:center;
    border-bottom:1px solid var(--line);
  }
  .page-hero::before,.page-hero::after{
    content:"";position:absolute;top:-10%;bottom:-10%;width:1px;background:var(--accent);
    opacity:.14;pointer-events:none;
  }
  .page-hero::before{left:22%}
  .page-hero::after{left:64%;opacity:.1}
  @media(prefers-reduced-motion:no-preference){
    .page-hero::before{animation:doorDrift 18s linear infinite}
    .page-hero::after{animation:doorDrift 18s linear infinite reverse}
  }
  @keyframes doorDrift{0%{transform:translateY(0)}50%{transform:translateY(-26px)}100%{transform:translateY(0)}}
  .hero-inner{position:relative;z-index:2;padding:64px 0;width:100%}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 12px;border-radius:999px;
    background:rgba(199,241,76,.12);color:var(--accent);
    font-size:12px;font-weight:600;letter-spacing:.08em;
    border:1px solid rgba(199,241,76,.24);
  }
  .hero-title{
    margin-top:20px;
    font-size:clamp(30px,5vw,52px);font-weight:900;line-height:1.12;
    letter-spacing:-.03em;max-width:16em;
  }
  .hero-title em{font-style:normal;color:var(--accent)}
  .hero-sub{margin-top:16px;font-size:16px;color:var(--text-2);max-width:34em}
  .chips{margin-top:28px;display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch}
  .chips::-webkit-scrollbar{height:0}
  .chip{
    flex:none;display:inline-flex;align-items:center;gap:6px;
    height:34px;padding:0 14px;border-radius:999px;
    border:1px solid var(--line-strong);background:rgba(12,13,16,.5);
    font-size:13px;color:var(--text-2);transition:color 180ms var(--ease),border-color 180ms var(--ease);
  }
  .chip:hover{color:var(--text);border-color:var(--accent)}

  /* ============ Section base ============ */
  .section{padding:56px 0;border-bottom:1px solid var(--line)}
  @media(min-width:768px){.section{padding:96px 0}}
  .sec-head{max-width:760px}
  .sec-head h2{
    font-size:clamp(24px,3vw,32px);font-weight:800;line-height:1.2;letter-spacing:-.02em;
    padding-left:14px;position:relative;
  }
  .sec-head h2::before{
    content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:2px;background:var(--accent);
  }
  .sec-sub{margin-top:10px;color:var(--text-2);font-size:15px;max-width:40em}

  /* ============ Timeline ============ */
  .timeline{margin-top:44px;position:relative}
  .timeline::before{
    content:"";position:absolute;left:19px;top:12px;bottom:12px;width:1px;
    background:linear-gradient(180deg,rgba(199,241,76,.5),rgba(111,91,255,.35),rgba(255,255,255,.06));
  }
  .tl-item{
    position:relative;display:grid;grid-template-columns:40px 1fr;gap:20px;
    padding:22px 0;border-bottom:1px solid var(--line);
  }
  .tl-item:first-child{padding-top:6px}
  .tl-item:last-child{border-bottom:0}
  .tl-idx{
    position:relative;z-index:1;width:40px;height:40px;border-radius:999px;
    display:flex;align-items:center;justify-content:center;
    background:var(--ink-900);border:1px solid var(--line-strong);
    color:var(--accent);font-size:13px;font-weight:800;letter-spacing:.06em;
    transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
  }
  .tl-item:hover .tl-idx{border-color:rgba(199,241,76,.5);box-shadow:0 0 0 4px rgba(199,241,76,.06)}
  .tl-body h3{font-size:18px;font-weight:700;line-height:1.35}
  .tl-body p{margin-top:8px;color:var(--text-2);font-size:15px;max-width:46em}
  @media(min-width:1024px){
    .tl-item{grid-template-columns:40px minmax(0,1fr);padding:26px 0}
    .tl-body h3{font-size:19px}
  }

  /* ============ Prepare ============ */
  .prepare-grid{margin-top:36px;display:grid;gap:24px;grid-template-columns:1fr}
  @media(min-width:1024px){.prepare-grid{grid-template-columns:minmax(0,1fr) 400px;align-items:start;gap:40px}}
  .checklist{display:grid;gap:12px;grid-template-columns:1fr}
  @media(min-width:640px){.checklist{grid-template-columns:1fr 1fr}}
  .check-item{
    display:flex;gap:12px;padding:16px 18px;border-radius:14px;
    background:var(--ink-850);border:1px solid var(--line);
    transition:border-color 180ms var(--ease),transform 180ms var(--ease);
  }
  .check-item:hover{border-color:rgba(199,241,76,.35);transform:translateY(-2px)}
  .check-item span mark{
    display:block;width:8px;height:8px;margin-top:9px;border-radius:2px;background:var(--accent);
  }
  .check-item b{display:block;font-size:15px;font-weight:700}
  .check-item small{display:block;margin-top:4px;color:var(--text-3);font-size:13px;line-height:1.6}
  .figure-card{
    border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
    background:var(--ink-850);box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
  }
  .figure-card .ratio{aspect-ratio:4/3;overflow:hidden;background:var(--ink-800)}
  .figure-card img{width:100%;height:100%;object-fit:cover;transition:transform 600ms var(--ease)}
  .figure-card:hover img{transform:scale(1.04)}
  .figure-card figcaption{padding:14px 18px;font-size:13px;color:var(--text-3);border-top:1px solid var(--line)}

  /* ============ Panel / missions ============ */
  .panel{
    margin-top:36px;background:var(--ink-850);border:1px solid var(--line);
    border-radius:var(--r-card);padding:8px 20px;box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
  }
  .panel-row{
    display:grid;grid-template-columns:1fr auto;gap:10px 16px;align-items:center;
    padding:18px 0;border-bottom:1px solid var(--line);
  }
  .panel-row:last-child{border-bottom:0}
  .panel-name{font-size:15px;font-weight:600}
  .badge{
    display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:6px;
    font-size:12px;font-weight:600;letter-spacing:.04em;
  }
  .badge-ok{background:rgba(76,217,138,.14);color:var(--ok)}
  .badge-warn{background:rgba(255,176,32,.14);color:var(--warn)}
  .badge-idle{background:rgba(110,114,122,.16);color:var(--text-3)}
  .panel-track{grid-column:1 / -1;display:flex;align-items:center;gap:14px}
  .track{flex:1;height:6px;border-radius:999px;background:#1C1F24;overflow:hidden}
  .track i{
    display:block;height:100%;width:0;border-radius:999px;
    background:linear-gradient(90deg,var(--accent),var(--accent-2));
    transition:width 900ms var(--ease);
  }
  .pct{font-size:13px;color:var(--text-2);min-width:42px;text-align:right}

  /* ============ Failure cards ============ */
  .fail-grid{margin-top:36px;display:grid;gap:16px;grid-template-columns:1fr}
  @media(min-width:768px){.fail-grid{grid-template-columns:1fr 1fr}}
  .fail-card{
    padding:22px;border-radius:var(--r-card);background:var(--ink-850);
    border:1px solid var(--line);box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
    transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),transform 180ms var(--ease);
  }
  .fail-card:hover{border-color:rgba(199,241,76,.35);box-shadow:0 24px 48px -28px rgba(199,241,76,.18);transform:translateY(-2px)}
  .fail-card h3{font-size:17px;font-weight:700}
  .fail-card p{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.7}
  .tag{display:inline-block;margin-bottom:12px;font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--accent)}

  /* ============ FAQ ============ */
  .faq-wrap{max-width:760px;margin:36px auto 0}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item:first-child{border-top:1px solid var(--line)}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
    gap:16px;min-height:60px;padding:14px 0;font-size:16px;font-weight:600;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary .plus{
    flex:none;width:24px;height:24px;border-radius:6px;border:1px solid var(--line-strong);
    display:inline-flex;align-items:center;justify-content:center;color:var(--accent);
    transition:transform 240ms var(--ease);
  }
  .faq-item[open] summary .plus{transform:rotate(180deg)}
  .faq-item p{padding:0 0 20px;font-size:14px;color:var(--text-2);line-height:1.8;max-width:62ch}

  /* ============ Related + CTA ============ */
  .related-row{
    display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;
  }
  .related-row a{
    display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;
    border-radius:999px;border:1px solid var(--line);background:var(--ink-850);
    font-size:13.5px;color:var(--text-2);
    transition:color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease);
  }
  .related-row a:hover{color:var(--text);border-color:rgba(199,241,76,.4);transform:translateY(-1px)}
  .related-row a svg{color:var(--accent)}

  .cta-band{
    position:relative;overflow:hidden;border-bottom:1px solid var(--line);
    background:
      radial-gradient(520px 220px at 12% 0%,rgba(199,241,76,.14),transparent 70%),
      linear-gradient(180deg,var(--ink-850),var(--ink-900));
  }
  .cta-band::before{
    content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
    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:56px 56px;
  }
  .cta-inner{
    position:relative;z-index:1;padding:56px 0;display:grid;gap:24px;grid-template-columns:1fr;
  }
  @media(min-width:1024px){.cta-inner{grid-template-columns:minmax(0,1fr) auto;align-items:center;padding:72px 0}}
  .cta-inner h2{font-size:clamp(22px,3vw,30px);font-weight:800;letter-spacing:-.02em}
  .cta-inner p{margin-top:8px;color:var(--text-2);font-size:15px}
  .cta-actions{display:flex;flex-direction:column;gap:12px}
  @media(min-width:640px){.cta-actions{flex-direction:row}}

  /* ============ Footer ============ */
  .site-footer{background:#0A0B0D;border-top:1px solid rgba(199,241,76,.12);padding:56px 0 28px}
  .footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
  @media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
  @media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
  .footer-brand{display:flex;align-items:center;gap:10px}
  .footer-brand .brand-mark{width:26px;height:26px;border-radius:8px;background:var(--accent);color:var(--accent-ink);display:inline-flex;align-items:center;justify-content:center}
  .footer-brand .brand-text{font-size:15px;font-weight:800}
  .footer-col h4{
    font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--text);
    margin:0 0 14px;
  }
  .footer-col p{color:var(--text-2);font-size:14px;line-height:1.75;max-width:26em}
  .footer-col a{display:block;font-size:14px;color:var(--text-2);padding:5px 0;transition:color 180ms var(--ease)}
  .footer-col a:hover{color:var(--text)}
  .footer-bottom{
    margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:13px;color:var(--text-3);
  }
  .footer-bottom .domain{color:var(--text-3);letter-spacing:.04em}

  /* ============ Reveal ============ */
  .reveal{opacity:0;transform:translateY(12px)}
  .reveal.is-in{opacity:1;transform:none;transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
  @media(prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important}
    .reveal{opacity:1;transform:none}
    .page-hero::before,.page-hero::after{animation:none}
  }
  body.no-scroll{overflow:hidden}

/* roulang page: category4 */
:root{
    --ink-950:#08090B; --ink-900:#0C0D10; --ink-850:#121417; --ink-800:#1A1D21;
    --line:rgba(255,255,255,.08); --line-strong:rgba(255,255,255,.16);
    --text:#ECEDEF; --text-2:#A2A5AC; --text-3:#6E727A;
    --accent:#C7F14C; --accent-ink:#0C0D10; --accent-2:#6F5BFF;
    --ok:#4CD98A; --warn:#FFB020; --danger:#FF5F56;
    --ease:cubic-bezier(.2,.8,.2,1);
    --radius:8px; --radius-card:18px;
    --container:1200px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  html body{
    margin:0;padding:0;
    background:var(--ink-900);
    color:var(--text);
    font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    font-size:16px;line-height:1.75;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
    overflow-x:hidden;
  }
  img{display:block;max-width:100%}
  a{color:inherit;text-decoration:none}
  button,input{font:inherit;color:inherit}
  ul,ol,dl,dd{margin:0;padding:0}
  li{list-style:none}
  ::selection{background:var(--accent);color:var(--accent-ink)}
  ::-webkit-scrollbar{width:10px;height:10px}
  ::-webkit-scrollbar-track{background:#0A0B0D}
  ::-webkit-scrollbar-thumb{background:#22262B;border-radius:999px;border:2px solid #0A0B0D}
  ::-webkit-scrollbar-thumb:hover{background:#33383F}

  a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
    outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;
  }

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
  @media(min-width:1024px){.container{padding:0 40px}}
  @media(min-width:1536px){.container{max-width:1360px}}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;height:64px;
    background:rgba(12,13,16,.72);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .nav-inner{
    max-width:1360px;margin:0 auto;height:64px;padding:0 20px;
    display:flex;align-items:center;gap:18px;
  }
  @media(min-width:1024px){.nav-inner{padding:0 40px}}

  .brand{display:inline-flex;align-items:center;gap:9px;flex:0 0 auto}
  .brand-mark{
    width:28px;height:28px;border-radius:8px;background:var(--accent);color:var(--accent-ink);
    display:grid;place-items:center;flex:0 0 auto;
  }
  .brand-text{font-size:15px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
  @media(max-width:1279px){.brand-text{font-size:13.5px}}

  .nav-links{display:none;align-items:center;gap:2px;margin-left:6px}
  @media(min-width:1024px){.nav-links{display:flex}}
  .nav-link{
    position:relative;padding:8px 9px;font-size:13.5px;font-weight:500;
    color:var(--text-2);border-radius:6px;transition:color .18s var(--ease);white-space:nowrap;
  }
  .nav-link::after{
    content:"";position:absolute;left:9px;right:9px;bottom:2px;height:2px;background:var(--accent);
    transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease);
  }
  .nav-link:hover{color:var(--text)}
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.is-active{color:var(--text)}
  .nav-link.is-active::after{transform:scaleX(1)}
  .nav-link.is-active::before{
    content:"";position:absolute;left:-2px;top:50%;transform:translateY(-50%);
    width:4px;height:4px;border-radius:50%;background:var(--accent);
  }

  .nav-right{display:flex;align-items:center;gap:10px;margin-left:auto}
  .cmd-search{
    display:none;align-items:center;gap:8px;width:224px;height:36px;padding:0 8px 0 11px;
    border:1px solid var(--line);border-radius:8px;background:rgba(255,255,255,.03);
    color:var(--text-3);transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
  }
  @media(min-width:1280px){.cmd-search{display:flex}}
  .cmd-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px rgba(199,241,76,.18)}
  .cmd-search input{flex:1;min-width:0;background:transparent;border:0;outline:0;font-size:13px;color:var(--text)}
  .cmd-search input::placeholder{color:var(--text-3)}
  .kbd{
    width:20px;height:20px;display:inline-grid;place-items:center;font-size:11px;
    border-radius:5px;border:1px solid var(--line-strong);color:var(--text-3);
    font-variant-numeric:tabular-nums;flex:0 0 auto;
  }
  .icon-btn{
    display:inline-grid;place-items:center;width:36px;height:36px;border-radius:8px;
    border:1px solid var(--line);color:var(--text-2);background:transparent;
    transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
  }
  .icon-btn:hover{color:var(--text);border-color:var(--line-strong);background:var(--ink-800)}
  @media(max-width:767px){.icon-btn{display:none}}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;border-radius:8px;border:1px solid transparent;
    font-size:14px;font-weight:700;cursor:pointer;white-space:nowrap;
    transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease);
  }
  .btn-primary{background:var(--accent);color:var(--accent-ink)}
  .btn-primary:hover{
    transform:translateY(-1px);filter:brightness(1.08);
    box-shadow:0 10px 24px -12px rgba(199,241,76,.5);
  }
  .btn-primary:active{transform:translateY(0);filter:brightness(.95)}
  .btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
  .btn-ghost:hover{border-color:var(--accent);color:var(--text)}
  .btn-lg{height:48px;padding:0 26px;font-size:15px}
  @media(max-width:767px){.nav-right > .btn{display:none}}

  .menu-btn{
    display:inline-grid;place-items:center;width:38px;height:38px;border-radius:8px;
    border:1px solid var(--line-strong);background:transparent;color:var(--text);cursor:pointer;
    transition:border-color .18s var(--ease),background .18s var(--ease);
  }
  .menu-btn:hover{border-color:var(--accent);background:var(--ink-800)}
  @media(min-width:1024px){.menu-btn{display:none}}

  /* ---------- mobile drawer ---------- */
  .mobile-drawer{
    position:fixed;inset:0;z-index:80;background:var(--ink-900);
    display:flex;flex-direction:column;padding:0 20px 24px;
    transform:translateY(-100%);visibility:hidden;
    transition:transform .24s var(--ease),visibility .24s var(--ease);
  }
  .mobile-drawer.open{transform:translateY(0);visibility:visible}
  @media(min-width:1024px){.mobile-drawer{display:none}}
  .drawer-top{
    height:64px;display:flex;align-items:center;justify-content:space-between;
    border-bottom:1px solid var(--line);flex:0 0 auto;
  }
  .drawer-links{display:flex;flex-direction:column;padding-top:8px}
  .drawer-links a{
    display:flex;align-items:center;height:56px;font-size:16px;font-weight:500;
    color:var(--text-2);border-bottom:1px solid var(--line);transition:color .18s var(--ease);
  }
  .drawer-links a:hover{color:var(--text)}
  .drawer-links a.is-active{color:var(--text)}
  .drawer-links a.is-active::before{
    content:"";width:4px;height:4px;border-radius:50%;background:var(--accent);margin-right:10px;
  }
  .drawer-foot{margin-top:auto;padding-top:24px}
  .drawer-foot .btn{width:100%}

  /* ---------- hero ---------- */
  .cat-hero{
    position:relative;overflow:hidden;
    display:flex;align-items:center;
    min-height:38vh;padding:64px 0;
    border-bottom:1px solid var(--line);
  }
  .cat-hero-bg{
    position:absolute;inset:0;
    background-image:linear-gradient(180deg,rgba(8,9,11,.62),rgba(12,13,16,.93)),url('/assets/images/backpic/back-2.webp');
    background-size:cover;background-position:center;background-repeat:no-repeat;
  }
  .seam{
    position:absolute;top:-10%;bottom:-10%;width:1px;
    background:linear-gradient(180deg,transparent,rgba(199,241,76,.9),transparent);
    opacity:.18;animation:seamDrift 18s linear infinite;pointer-events:none;
  }
  @keyframes seamDrift{
    0%{transform:translateY(-8%)}
    50%{transform:translateY(8%)}
    100%{transform:translateY(-8%)}
  }
  .hero-inner{position:relative;z-index:2;width:100%}
  .eyebrow{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
    background:rgba(199,241,76,.12);color:var(--accent);
    font-size:12px;font-weight:600;letter-spacing:.08em;
  }
  .hero-inner h1{
    margin:18px 0 0;font-size:clamp(28px,5vw,54px);font-weight:900;
    line-height:1.1;letter-spacing:-.03em;max-width:18ch;
  }
  .hero-sub{margin:18px 0 0;font-size:clamp(15px,1.6vw,18px);color:var(--text-2);max-width:34ch;line-height:1.7}
  .chips{
    display:flex;gap:10px;margin-top:30px;padding-bottom:6px;
    overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  }
  .chips::-webkit-scrollbar{display:none}
  .chip{
    flex:0 0 auto;display:inline-flex;align-items:center;height:34px;padding:0 15px;
    border:1px solid var(--line-strong);border-radius:999px;
    font-size:13px;color:var(--text-2);white-space:nowrap;
    transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
  }
  .chip:hover{border-color:rgba(199,241,76,.5);color:var(--text);background:rgba(199,241,76,.05)}

  /* ---------- sections ---------- */
  .section{padding:56px 0;border-bottom:1px solid var(--line)}
  @media(min-width:1024px){.section{padding:96px 0}}
  main > section:last-of-type{border-bottom:none}

  .sec-head{max-width:720px;margin-bottom:36px}
  .sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
  .sec-eyebrow{
    display:inline-flex;align-items:center;gap:10px;
    font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--accent);
  }
  .sec-eyebrow::before{content:"";width:3px;height:14px;background:var(--accent);border-radius:2px}
  .sec-head h2{
    margin:14px 0 0;font-size:clamp(24px,3.2vw,34px);font-weight:800;
    line-height:1.2;letter-spacing:-.02em;
  }
  .sec-lead{margin:14px 0 0;font-size:15px;color:var(--text-2);line-height:1.75;max-width:36ch}

  /* ---------- split ---------- */
  .split{display:grid;gap:32px;grid-template-columns:1fr;align-items:center}
  @media(min-width:1024px){.split{grid-template-columns:1fr 1fr;gap:56px}}
  .split-media{
    position:relative;border-radius:var(--radius-card);overflow:hidden;
    border:1px solid var(--line);background:var(--ink-850);aspect-ratio:4/3;
  }
  .split-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
  .split-media:hover img{transform:scale(1.03)}

  /* ---------- checklist ---------- */
  .checklist{margin:28px 0 0;border-top:1px solid var(--line)}
  .checklist li{
    display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:start;
    padding:18px 0;border-bottom:1px solid var(--line);
  }
  .cnum{
    font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--accent);
    padding-top:5px;font-variant-numeric:tabular-nums;
  }
  .checklist h3{margin:0 0 4px;font-size:16px;font-weight:700;line-height:1.4}
  .checklist p{margin:0;font-size:14px;line-height:1.7;color:var(--text-2)}
  .badge{
    display:inline-flex;align-items:center;height:22px;padding:0 9px;border-radius:6px;
    font-size:12px;font-weight:600;white-space:nowrap;
  }
  .badge-accent{background:rgba(199,241,76,.12);color:var(--accent)}
  .badge-warn{background:rgba(255,176,32,.14);color:var(--warn)}
  .badge-ok{background:rgba(76,217,138,.14);color:var(--ok)}
  @media(max-width:560px){
    .checklist li{grid-template-columns:auto 1fr}
    .checklist .badge{grid-column:2;justify-self:start;margin-top:6px}
  }

  /* ---------- definition list ---------- */
  .deflist{margin-top:8px;border-top:1px solid var(--line)}
  .def-item{
    display:grid;gap:10px;padding:24px 0;border-bottom:1px solid var(--line);
  }
  @media(min-width:1024px){
    .def-item{grid-template-columns:300px 1fr;gap:40px;padding:30px 0}
  }
  .def-term{
    display:flex;align-items:baseline;gap:12px;
    font-size:20px;font-weight:700;line-height:1.35;letter-spacing:-.01em;
    transition:color .18s var(--ease);
  }
  .def-item:hover .def-term{color:var(--accent)}
  .idx{
    font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--text-3);
    font-variant-numeric:tabular-nums;flex:0 0 auto;
  }
  .def-desc{margin:0;font-size:15px;line-height:1.85;color:var(--text-2);max-width:72ch}

  /* ---------- steps panel ---------- */
  .steps-panel{
    background:var(--ink-850);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:8px;box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
  }
  .steps{display:grid;gap:1px;background:var(--line);border-radius:12px;overflow:hidden}
  @media(min-width:768px){.steps{grid-template-columns:repeat(3,1fr)}}
  .step{background:var(--ink-850);padding:28px 24px}
  .big-num{
    display:block;font-size:56px;font-weight:800;line-height:1;
    color:rgba(199,241,76,.18);font-variant-numeric:tabular-nums;letter-spacing:-.02em;
  }
  @supports(-webkit-text-stroke:1px #000){
    .big-num{color:transparent;-webkit-text-stroke:1px rgba(199,241,76,.55)}
  }
  .step h3{margin:16px 0 8px;font-size:17px;font-weight:700}
  .step p{margin:0;font-size:14px;line-height:1.75;color:var(--text-2)}

  /* ---------- faq ---------- */
  .faq{max-width:760px;margin:0 auto;border-top:1px solid var(--line)}
  .faq details{border-bottom:1px solid var(--line)}
  .faq summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
    gap:16px;min-height:60px;padding:16px 0;font-size:16px;font-weight:600;line-height:1.5;
  }
  .faq summary::-webkit-details-marker{display:none}
  .plus{position:relative;width:22px;height:22px;flex:0 0 auto;transition:transform .24s var(--ease)}
  .plus::before,.plus::after{content:"";position:absolute;background:var(--accent);border-radius:2px}
  .plus::before{left:2px;right:2px;top:50%;height:1.5px;transform:translateY(-50%)}
  .plus::after{top:2px;bottom:2px;left:50%;width:1.5px;transform:translateX(-50%)}
  .faq details[open] .plus{transform:rotate(180deg)}
  .ans{
    padding:0 0 22px;font-size:14px;line-height:1.85;color:var(--text-2);max-width:66ch;
    animation:ansIn .24s var(--ease);
  }
  @keyframes ansIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

  /* ---------- related ---------- */
  .related{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
  .rel-link{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding:18px 20px;background:var(--ink-850);border:1px solid var(--line);border-radius:14px;
    font-size:15px;font-weight:600;color:var(--text);
    transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
  }
  .rel-link svg{flex:0 0 auto;color:var(--text-3);transition:transform .18s var(--ease),color .18s var(--ease)}
  .rel-link:hover{border-color:rgba(199,241,76,.35);transform:translateY(-2px);box-shadow:0 24px 48px -28px rgba(199,241,76,.18)}
  .rel-link:hover svg{transform:translateX(4px);color:var(--accent)}

  /* ---------- cta band ---------- */
  .cta-band{
    position:relative;overflow:hidden;display:grid;gap:28px;
    padding:40px 24px;border:1px solid var(--line);border-radius:var(--radius-card);
    background:linear-gradient(135deg,rgba(199,241,76,.06),rgba(111,91,255,.06) 62%,transparent);
  }
  @media(min-width:1024px){.cta-band{grid-template-columns:1.3fr 1fr;align-items:center;padding:52px 48px;gap:40px}}
  .cta-band::before{
    content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
    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:32px 32px;
  }
  .cta-band::after{
    content:"";position:absolute;width:420px;height:420px;right:-90px;top:-170px;pointer-events:none;
    background:radial-gradient(circle,rgba(199,241,76,.14),transparent 65%);
  }
  .cta-copy,.cta-actions{position:relative;z-index:1}
  .cta-copy h2{margin:0;font-size:clamp(22px,3vw,30px);font-weight:800;letter-spacing:-.02em;line-height:1.25}
  .cta-copy p{margin:12px 0 0;font-size:15px;line-height:1.75;color:var(--text-2);max-width:36ch}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}
  @media(max-width:640px){.cta-actions .btn{width:100%}}

  /* ---------- footer ---------- */
  .site-footer{
    position:relative;background:var(--ink-950);
    border-top:1px solid var(--line);padding:56px 0 28px;
  }
  .site-footer::before{
    content:"";position:absolute;top:0;left:0;right:0;height:1px;
    background:rgba(199,241,76,.12);
  }
  .footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
  @media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
  @media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}}
  .footer-brand{display:flex;align-items:center;gap:9px;margin-bottom:16px}
  .footer-brand .brand-mark{width:26px;height:26px;border-radius:8px}
  .footer-col h4{
    margin:0 0 14px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--text);
  }
  .footer-col a{
    display:block;padding:5px 0;font-size:14px;color:var(--text-2);
    transition:color .18s var(--ease);
  }
  .footer-col a:hover{color:var(--text)}
  .footer-col p{margin:0 0 8px;font-size:14px;line-height:1.7;color:var(--text-2);max-width:26ch}
  .footer-bottom{
    margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:13px;color:var(--text-3);
  }
  .domain{font-variant-numeric:tabular-nums}

  /* ---------- reveal ---------- */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
  .reveal.is-in{opacity:1;transform:none}

  @media(prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important}
    .reveal{opacity:1;transform:none}
    html{scroll-behavior:auto}
  }

.reveal{opacity:1;transform:none}

/* roulang page: category3 */
:root{
  --ink-950:#08090B; --ink-900:#0C0D10; --ink-850:#121417; --ink-800:#1A1D21;
  --line:rgba(255,255,255,.08); --line-strong:rgba(255,255,255,.16);
  --text:#ECEDEF; --text-2:#A2A5AC; --text-3:#6E727A;
  --accent:#C7F14C; --accent-ink:#0C0D10; --accent-2:#6F5BFF;
  --ok:#4CD98A; --warn:#FFB020; --danger:#FF5F56;
  --r-btn:8px; --r-card:18px;
  --ease:cubic-bezier(.2,.8,.2,1);
}

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

html{scroll-behavior:smooth}

body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:system-ui,-apple-system,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

img{max-width:100%;display:block}
a{color:inherit}
button{font-family:inherit}

::selection{background:var(--accent);color:var(--accent-ink)}

::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--ink-900)}
::-webkit-scrollbar-thumb{background:#1E2227;border-radius:8px;border:2px solid var(--ink-900)}
::-webkit-scrollbar-thumb:hover{background:#2A2F36}

a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  border-radius:4px;
}

.container{max-width:1200px;margin:0 auto;padding:0 40px}
@media (max-width:768px){.container{padding:0 20px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(12,13,16,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:1360px;margin:0 auto;height:64px;
  display:flex;align-items:center;gap:24px;
  padding:0 40px;
}
@media (max-width:768px){.nav-inner{padding:0 20px;gap:12px}}

.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);flex:0 0 auto}
.brand-mark{
  width:30px;height:30px;border-radius:8px;
  background:var(--accent);color:var(--accent-ink);
  display:grid;place-items:center;flex:0 0 auto;
}
.brand-text{font-weight:800;font-size:16px;letter-spacing:-.01em;white-space:nowrap}
@media (max-width:1280px){.brand-text{font-size:14px}}
@media (max-width:520px){.brand-text{font-size:13px}}

.nav-links{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-link{
  position:relative;padding:8px 12px;border-radius:6px;
  font-size:14px;font-weight:500;color:var(--text-2);
  text-decoration:none;white-space:nowrap;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.03)}
.nav-link::after{
  content:'';position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .18s var(--ease);
}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::before{
  content:'';position:absolute;left:-2px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--accent);
}

.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
@media (max-width:520px){.nav-right{gap:8px}}

.cmd-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:240px;height:36px;padding:0 10px;
  border:1px solid var(--line);border-radius:8px;
  background:rgba(255,255,255,.04);color:var(--text-3);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.cmd-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px rgba(199,241,76,.18)}
.cmd-search input{
  flex:1;min-width:0;height:100%;border:0;background:transparent;
  color:var(--text);font-size:13px;outline:none;
}
.cmd-search input::placeholder{color:var(--text-3)}
.kbd{
  font-size:11px;font-weight:600;line-height:1;padding:4px 5px;
  border:1px solid var(--line-strong);border-radius:5px;color:var(--text-3);
}
@media (max-width:1180px){.cmd-search{display:none}}

.icon-btn{
  width:36px;height:36px;display:grid;place-items:center;
  border:1px solid var(--line);border-radius:8px;color:var(--text-2);
  text-decoration:none;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.icon-btn:hover{color:var(--text);border-color:var(--line-strong);background:rgba(255,255,255,.04)}
@media (max-width:900px){.icon-btn{display:none}}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:14px;font-weight:700;text-decoration:none;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),filter .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.btn-primary{background:var(--accent);color:var(--accent-ink)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 10px 24px -12px rgba(199,241,76,.5)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-lg{height:48px;padding:0 26px;font-size:15px}
@media (max-width:1080px){.nav-right .btn{display:none}}

.menu-btn{
  display:none;width:38px;height:38px;place-items:center;
  border:1px solid var(--line);border-radius:8px;
  background:transparent;color:var(--text);cursor:pointer;
}
.menu-btn:hover{border-color:var(--line-strong);background:rgba(255,255,255,.04)}
@media (max-width:1023px){
  .nav-links{display:none}
  .menu-btn{display:grid}
}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:60;background:var(--ink-900);
  display:flex;flex-direction:column;
  transform:translateX(100%);
  transition:transform .24s var(--ease);
  visibility:hidden;
}
.drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-top{
  display:flex;align-items:center;justify-content:space-between;
  height:64px;padding:0 20px;border-bottom:1px solid var(--line);
}
.drawer-nav{padding:12px 20px;flex:1;overflow-y:auto}
.drawer-nav a{
  display:flex;align-items:center;height:56px;
  font-size:16px;font-weight:500;color:var(--text-2);
  text-decoration:none;border-bottom:1px solid var(--line-);
}
.drawer-nav a{border-bottom:1px solid var(--line)}
.drawer-nav a.is-active{color:var(--accent)}
.drawer-nav a:hover{color:var(--text)}
.drawer-foot{padding:16px 20px 28px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}
body.no-scroll{overflow:hidden}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,13,16,.62),rgba(8,9,11,.92));
}
.beams{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.beam{
  position:absolute;top:-25%;width:1px;height:150%;
  background:linear-gradient(180deg,transparent,rgba(199,241,76,.6),transparent);
  opacity:.16;
  animation:beamDrift 18s linear infinite;
}
@keyframes beamDrift{
  0%{transform:translateY(-6%)}
  50%{transform:translateY(6%)}
  100%{transform:translateY(-6%)}
}
.cat-hero-inner{
  position:relative;z-index:1;
  max-width:1200px;margin:0 auto;
  padding:84px 40px 68px;
  min-height:38vh;
  display:flex;flex-direction:column;justify-content:center;
}
@media (max-width:640px){.cat-hero-inner{padding:60px 20px 48px}}

.eyebrow{
  display:inline-block;align-self:flex-start;
  padding:6px 14px;border-radius:999px;
  border:1px solid rgba(199,241,76,.3);
  background:rgba(199,241,76,.1);
  color:var(--accent);
  font-size:12px;font-weight:600;letter-spacing:.08em;
  margin-bottom:20px;
}
.cat-hero h1{
  margin:0;max-width:18em;
  font-size:clamp(30px,4.6vw,52px);
  font-weight:900;line-height:1.12;letter-spacing:-.03em;
}
.lede{
  margin:18px 0 0;max-width:34em;
  font-size:16px;color:var(--text-2);line-height:1.7;
}
.chips{
  display:flex;gap:10px;margin-top:30px;
  overflow-x:auto;scrollbar-width:none;
  padding-bottom:4px;
}
.chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;
  padding:7px 15px;border-radius:999px;
  border:1px solid var(--line-strong);
  font-size:13px;font-weight:500;color:var(--text-2);
  text-decoration:none;white-space:nowrap;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.chip:hover{color:var(--accent);border-color:rgba(199,241,76,.45);background:rgba(199,241,76,.06)}

/* ---------- 板块 ---------- */
.section{padding:96px 0;border-bottom:1px solid var(--line)}
@media (max-width:768px){.section{padding:56px 0}}

.section-head{max-width:720px;margin-bottom:44px}
.section-title{
  position:relative;margin:0;padding-left:16px;
  font-size:clamp(24px,2.6vw,32px);
  font-weight:800;line-height:1.25;letter-spacing:-.02em;
}
.section-title::before{
  content:'';position:absolute;left:0;top:.26em;
  width:4px;height:1em;border-radius:2px;background:var(--accent);
}
.section-sub{margin:10px 0 0;color:var(--text-2);font-size:15px;line-height:1.7}

/* 对比矩阵 */
.matrix{border-top:1px solid var(--line)}
.dl-row{
  display:grid;grid-template-columns:minmax(210px,1fr) 2fr;gap:28px;
  padding:24px 8px;border-bottom:1px solid var(--line);
  transition:background .18s var(--ease);
}
.dl-row:hover{background:rgba(255,255,255,.02)}
.dl-key{
  display:flex;flex-direction:column;align-items:flex-start;gap:10px;
  font-size:16px;font-weight:700;line-height:1.5;
}
.dl-val{margin:0;font-size:15px;color:var(--text-2);line-height:1.85}
@media (max-width:768px){
  .dl-row{grid-template-columns:1fr;gap:12px;padding:20px 4px}
}

.badge{
  display:inline-block;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  padding:3px 9px;border-radius:6px;border:1px solid transparent;
}
.badge-ok{color:var(--ok);background:rgba(76,217,138,.1);border-color:rgba(76,217,138,.28)}
.badge-warn{color:var(--warn);background:rgba(255,176,32,.1);border-color:rgba(255,176,32,.28)}
.badge-danger{color:var(--danger);background:rgba(255,95,86,.12);border-color:rgba(255,95,86,.3)}
.badge-accent{color:var(--accent);background:rgba(199,241,76,.1);border-color:rgba(199,241,76,.28)}

/* 自查维度卡片 */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:1023px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:639px){.card-grid{grid-template-columns:1fr}}

.check-card{
  background:var(--ink-850);
  border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease);
}
.check-card:hover{
  border-color:rgba(199,241,76,.35);
  box-shadow:0 24px 48px -28px rgba(199,241,76,.18);
  transform:translateY(-2px);
}
.cover{position:relative;aspect-ratio:4/3;overflow:hidden;background:#101216;border-bottom:1px solid var(--line)}
.cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.check-card:hover .cover img{transform:scale(1.04)}
.card-body{padding:20px}
.card-body h3{margin:0 0 8px;font-size:17px;font-weight:700;line-height:1.4}
.card-body p{margin:0;font-size:14px;color:var(--text-2);line-height:1.75}

/* 编号清单 */
.num-list{border-top:1px solid var(--line)}
.num-item{
  display:grid;grid-template-columns:96px 1fr;gap:24px;align-items:start;
  padding:30px 4px;border-bottom:1px solid var(--line);
}
.num{
  font-size:56px;font-weight:800;line-height:1;letter-spacing:-.04em;
  color:transparent;-webkit-text-stroke:1.5px rgba(199,241,76,.55);
  font-variant-numeric:tabular-nums;
}
@supports not (-webkit-text-stroke:1px #000){
  .num{color:rgba(199,241,76,.45)}
}
.num-item h3{margin:0 0 8px;font-size:18px;font-weight:700;line-height:1.4}
.num-item p{margin:0;max-width:62ch;font-size:15px;color:var(--text-2);line-height:1.85}
@media (max-width:640px){
  .num-item{grid-template-columns:1fr;gap:12px;padding:24px 4px}
  .num{font-size:42px}
}

/* FAQ */
.faq{max-width:760px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;font-size:16px;font-weight:600;line-height:1.5;
  color:var(--text);cursor:pointer;list-style:none;
  transition:color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent)}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;display:grid;place-items:center;
  color:var(--text-3);transition:transform .24s var(--ease),color .18s var(--ease);
}
.faq-item[open] .faq-icon{transform:rotate(180deg);color:var(--accent)}
.faq-ans{
  margin:0;padding:0 0 22px;
  font-size:14px;color:var(--text-2);line-height:1.85;max-width:66ch;
}

/* 相关分类 */
.rel-head{margin:0 0 20px;font-size:15px;font-weight:600;letter-spacing:.06em;color:var(--text-3)}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media (max-width:900px){.rel-grid{grid-template-columns:1fr}}
.rel-link{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px;border:1px solid var(--line);border-radius:14px;
  background:var(--ink-850);text-decoration:none;color:var(--text);
  transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.rel-link:hover{border-color:rgba(199,241,76,.4);color:var(--accent);transform:translateY(-2px)}
.rel-title{display:block;font-size:16px;font-weight:700}
.rel-desc{display:block;margin-top:6px;font-size:13px;color:var(--text-3)}
.rel-arrow{flex:0 0 auto;color:var(--text-3);transition:transform .18s var(--ease),color .18s var(--ease)}
.rel-link:hover .rel-arrow{transform:translateX(4px);color:var(--accent)}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;
  padding:80px 0;
  background:linear-gradient(180deg,rgba(18,20,23,.92),rgba(12,13,16,.96));
  border-bottom:1px solid var(--line);
}
.cta-band::before{
  content:'';position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:44px 44px;opacity:.55;
}
.cta-band::after{
  content:'';position:absolute;width:520px;height:520px;right:-140px;top:-220px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(199,241,76,.14),transparent 65%);
  pointer-events:none;
}
.cta-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
}
.cta-inner h2{
  margin:0;font-size:clamp(24px,2.6vw,32px);
  font-weight:800;letter-spacing:-.02em;line-height:1.25;
}
.cta-inner p{margin:10px 0 0;font-size:15px;color:var(--text-2)}
.cta-actions{display:flex;gap:12px;flex:0 0 auto}
@media (max-width:840px){
  .cta-inner{flex-direction:column;align-items:stretch;gap:26px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#0A0B0D;
  border-top:1px solid rgba(199,241,76,.12);
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr;gap:32px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-text{font-size:15px;font-weight:800}
.footer-col h4{
  margin:0 0 14px;font-size:13px;font-weight:600;
  letter-spacing:.08em;color:var(--text);
}
.footer-col a{
  display:block;padding:5px 0;font-size:14px;
  color:var(--text-2);text-decoration:none;
  transition:color .18s var(--ease);
}
.footer-col a:hover{color:var(--accent)}
.footer-col p{margin:0 0 8px;font-size:14px;color:var(--text-2);line-height:1.7}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .domain{font-variant-numeric:tabular-nums}
@media (max-width:560px){.footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}}

/* 入场动效 */
[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  [data-reveal]{opacity:1;transform:none}
}