/* roulang page: index */
:root{
  --ink:#0E1116;
  --ink-2:#1A1F26;
  --paper:#F6F5F1;
  --paper-2:#ECEAE3;
  --lime:#C8F441;
  --green:#14453A;
  --text:#0E1116;
  --text-2:#3A3F46;
  --text-3:#6B6F76;
  --line:#DCD9D0;
  --line-dark:rgba(255,255,255,.12);
  --danger:#C6402F;
  --r-card:6px;
  --r-btn:4px;
  --r-img:4px;
  --r-pill:999px;
  --shadow:0 10px 30px rgba(14,17,22,.08);
  --maxw:1200px;
  --font-cn:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Space Grotesk","Oswald",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font-cn);font-size:16px;line-height:1.7;color:var(--text);background:var(--paper);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,h5,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:2px}
::selection{background:var(--lime);color:var(--ink)}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px}
@media (max-width:991px){.wrap{padding:0 24px}}
@media (max-width:575px){.wrap{padding:0 20px}}

/* ---------- 顶部细条 ---------- */
.topstrip{background:var(--ink);color:rgba(255,255,255,.66);font-size:12px;letter-spacing:.04em}
.topstrip .wrap{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topstrip span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topstrip a{color:var(--lime);font-weight:600;white-space:nowrap;border-bottom:1px solid transparent;transition:border-color .25s}
.topstrip a:hover{border-bottom-color:var(--lime)}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(246,245,241,.92);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:900;font-size:18px;letter-spacing:-.02em;white-space:nowrap;flex:0 0 auto}
.brand-mark{width:22px;height:22px;border-radius:3px;background:var(--ink);position:relative;overflow:hidden;flex:0 0 auto}
.brand-mark::after{content:"";position:absolute;inset:0;background:var(--lime);clip-path:polygon(0 0,100% 0,0 100%)}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.main-nav a{position:relative;display:inline-block;font-size:15px;font-weight:500;color:var(--text-2);padding:8px 12px;transition:color .2s}
.main-nav a::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--lime);transform:scaleX(0);transform-origin:left;transition:transform .3s cubic-bezier(.2,.7,.2,1)}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--ink);font-weight:700}
.main-nav a.active::after{transform:scaleX(1)}
.main-nav a.active::before{content:"";position:absolute;left:2px;top:50%;transform:translateY(-50%);width:8px;height:8px;background:var(--lime);border-radius:1px}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:12px}
.icon-btn{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);background:transparent;border-radius:var(--r-btn);color:var(--text-2);cursor:pointer;transition:border-color .2s,color .2s,background-color .2s}
.icon-btn:hover{border-color:var(--ink);color:var(--ink);background:#fff}
.icon-btn svg{width:16px;height:16px}
.burger{display:none;width:38px;height:38px;border:1px solid var(--line);background:transparent;border-radius:var(--r-btn);cursor:pointer;position:relative}
.burger span{position:absolute;left:10px;right:10px;height:2px;background:var(--ink);transition:transform .3s,opacity .3s}
.burger span:nth-child(1){top:13px}
.burger span:nth-child(2){top:18px}
.burger span:nth-child(3){top:23px}
.burger.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.search-panel{display:none;border-top:1px solid var(--line);background:#fff}
.search-panel.open{display:block}
.search-panel .wrap{padding-top:14px;padding-bottom:14px;display:flex;gap:10px}
.search-panel input{flex:1;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);padding:0 14px;background:var(--paper);transition:border-color .2s,box-shadow .2s}
.search-panel input:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 2px rgba(200,244,65,.5)}

/* ---------- 按钮 ---------- */
.rl-btn{position:relative;display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;overflow:hidden;transition:color .3s,border-color .3s,background-color .3s,transform .2s;white-space:nowrap}
.rl-btn>span{position:relative;z-index:1}
.rl-btn-solid{background:var(--ink);color:#fff}
.rl-btn-solid::before{content:"";position:absolute;inset:0;background:var(--lime);transform:scaleX(0);transform-origin:left;transition:transform .4s cubic-bezier(.2,.7,.2,1)}
.rl-btn-solid:hover{color:var(--ink)}
.rl-btn-solid:hover::before{transform:scaleX(1)}
.rl-btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.rl-btn-ghost:hover{background:var(--ink);color:#fff}
.rl-btn-lime{background:var(--lime);color:var(--ink)}
.rl-btn-lime:hover{background:var(--ink);color:var(--lime)}
.rl-btn-sm{height:38px;padding:0 16px;font-size:14px}
@media (max-width:575px){.rl-btn{height:48px}}

/* ---------- 倒计时条 ---------- */
.countbar{background:var(--ink-2);color:#fff;border-bottom:1px solid rgba(255,255,255,.06)}
.countbar .wrap{min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-top:10px;padding-bottom:10px}
.count-title{font-size:13px;color:rgba(255,255,255,.68);letter-spacing:.02em}
.count-clock{display:flex;align-items:baseline;gap:8px;font-family:var(--font-num);font-variant-numeric:tabular-nums}
.clock-unit{display:inline-flex;align-items:baseline;gap:4px}
.clock-unit b{font-size:26px;font-weight:700;color:var(--lime);line-height:1;min-width:2ch;text-align:center;display:inline-block;transition:transform .2s}
.clock-unit b.tick{transform:scale(1.08)}
.clock-unit i{font-style:normal;font-size:11px;color:rgba(255,255,255,.5);letter-spacing:.06em}
.clock-colon{color:rgba(255,255,255,.28);font-size:20px;line-height:1}
@media (max-width:575px){
  .clock-unit b{font-size:20px}
  .count-clock{gap:5px}
}

/* ---------- Hero ---------- */
.hero{padding:76px 0 92px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;left:50%;bottom:-160px;width:820px;height:320px;transform:translateX(-50%);background:radial-gradient(ellipse at center,rgba(200,244,65,.20),transparent 70%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center;position:relative;z-index:1}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:500;letter-spacing:.08em;color:var(--text-3)}
.eyebrow::before{content:"";width:8px;height:8px;background:var(--lime);display:inline-block}
.hero-title{font-size:clamp(34px,5vw,64px);line-height:1.08;letter-spacing:-.03em;font-weight:900;margin:20px 0 0}
.hero-sub{margin-top:22px;font-size:17px;line-height:1.75;color:var(--text-2);max-width:44ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{display:flex;flex-wrap:wrap;align-items:stretch;gap:0;margin-top:44px;border-top:1px solid var(--line);padding-top:22px}
.hero-stats .stat{padding-right:26px;margin-right:26px;border-right:1px solid var(--line)}
.hero-stats .stat:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-stats b{display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:26px;font-weight:700;line-height:1.1;letter-spacing:-.02em}
.hero-stats span{display:block;font-size:13px;color:var(--text-3);margin-top:4px}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line);background:var(--paper-2)}
.hero-float{position:absolute;right:16px;bottom:16px;background:var(--ink);color:#fff;padding:14px 18px;border-radius:var(--r-card);max-width:230px;box-shadow:var(--shadow)}
.hero-float p{font-size:12px;color:rgba(255,255,255,.66);margin-top:8px;line-height:1.5}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);font-size:12px;font-weight:600;letter-spacing:.06em}
.badge-lime{background:var(--lime);color:var(--ink)}
.badge-plain{background:var(--paper-2);color:var(--ink)}
.badge-line{border:1px solid var(--line);color:var(--text-2);background:transparent}
@media (max-width:991px){
  .hero{padding:52px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{order:-1}
  .hero-float{right:12px;bottom:12px;padding:12px 14px}
}
@media (max-width:575px){
  .hero-sub{font-size:16px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .rl-btn{width:100%}
  .hero-stats{gap:18px 0}
  .hero-stats .stat{padding-right:18px;margin-right:18px}
  .hero-stats b{font-size:22px}
}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0;border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:48px}
.section-head h2{font-size:clamp(26px,3.2vw,40px);line-height:1.2;letter-spacing:-.02em;font-weight:800;margin-top:14px}
.section-head p.lead{font-size:15px;color:var(--text-3);margin-top:12px;max-width:52ch}
.link-more{font-size:14px;font-weight:700;color:var(--ink);border-bottom:1px solid var(--ink);padding-bottom:3px;transition:color .2s,border-color .2s}
.link-more:hover{color:var(--text-3);border-color:var(--text-3)}
@media (max-width:768px){
  .section{padding:60px 0}
  .section-head{margin-bottom:32px}
}

/* ---------- 卖点 ---------- */
.sell-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.sell-item{border-top:1px solid var(--line);padding-top:22px}
.sell-num{font-family:var(--font-num);font-size:15px;font-weight:700;letter-spacing:.12em;color:var(--text-3);font-variant-numeric:tabular-nums}
.sell-item h3{font-size:20px;font-weight:700;letter-spacing:-.01em;margin-top:14px;line-height:1.35}
.sell-item p{font-size:14px;line-height:1.8;color:var(--text-3);margin-top:10px}
@media (max-width:991px){.sell-grid{grid-template-columns:repeat(2,1fr);gap:28px}}
@media (max-width:575px){
  .sell-grid{grid-template-columns:1fr;gap:0}
  .sell-item{position:relative;border-top:0;padding:0 0 28px 26px}
  .sell-item::before{content:"";position:absolute;left:0;top:8px;width:9px;height:9px;border-radius:50%;background:var(--lime)}
  .sell-item::after{content:"";position:absolute;left:4px;top:24px;bottom:0;width:1px;background:var(--line)}
  .sell-item:last-child{padding-bottom:0}
  .sell-item:last-child::after{display:none}
}

/* ---------- 图墙 ---------- */
.gallery-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.gtile{position:relative;display:block;overflow:hidden;border-radius:var(--r-img);border:1px solid var(--line);background:var(--paper-2);transition:border-color .3s,box-shadow .3s,transform .3s}
.gtile:hover{border-color:var(--ink);box-shadow:var(--shadow);transform:translateY(-2px)}
.gtile img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.gtile:hover img{transform:scale(1.03)}
.gtile .gtile-cap{position:absolute;left:0;right:0;bottom:0;padding:34px 16px 14px;background:linear-gradient(to top,rgba(14,17,22,.88),rgba(14,17,22,.35) 60%,transparent);display:flex;align-items:center;justify-content:space-between;gap:12px}
.gtile .gtile-cap b{font-size:14px;font-weight:700;color:#fff;letter-spacing:-.01em}
.gtile .gtile-cap em{font-style:normal;font-size:11px;font-family:var(--font-num);letter-spacing:.08em;color:var(--lime)}
.gtile-a,.gtile-b{grid-column:span 3}
.gtile-c,.gtile-d,.gtile-e{grid-column:span 2}
.gtile-a img{aspect-ratio:16/10}
.gtile-b img{aspect-ratio:16/10}
.gtile-c img,.gtile-d img,.gtile-e img{aspect-ratio:4/3}
@media (max-width:991px){
  .gtile-a,.gtile-b,.gtile-c,.gtile-d,.gtile-e{grid-column:span 3}
  .gtile-e{grid-column:span 6}
  .gtile-a img,.gtile-b img{aspect-ratio:16/10}
  .gtile-e img{aspect-ratio:16/9}
}
@media (max-width:575px){
  .gallery-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .gtile-a,.gtile-b,.gtile-c,.gtile-d{grid-column:span 1}
  .gtile-e{grid-column:span 2}
  .gtile-c img,.gtile-d img,.gtile-a img,.gtile-b img{aspect-ratio:1/1}
  .gtile .gtile-cap{padding:26px 12px 12px}
  .gtile .gtile-cap b{font-size:12px}
}

/* ---------- 报名 CTA ---------- */
.join{position:relative;background:var(--ink);color:#fff;padding:88px 0;overflow:hidden}
.join::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:48px 48px;pointer-events:none}
.join .wrap{position:relative;z-index:1}
.join-grid{display:grid;grid-template-columns:1fr 420px;gap:64px;align-items:start}
.join h2{font-size:clamp(26px,3.2vw,40px);line-height:1.2;letter-spacing:-.02em;font-weight:800;margin-top:16px}
.join .join-lead{font-size:15px;color:rgba(255,255,255,.62);margin-top:16px;max-width:44ch;line-height:1.8}
.join-list{margin-top:32px;display:grid;gap:14px}
.join-list li{position:relative;padding-left:30px;font-size:15px;color:rgba(255,255,255,.82);line-height:1.7}
.join-list li::before{content:"";position:absolute;left:0;top:6px;width:16px;height:16px;border:1px solid var(--lime);border-radius:3px}
.join-list li::after{content:"";position:absolute;left:5px;top:10px;width:6px;height:9px;border-right:2px solid var(--lime);border-bottom:2px solid var(--lime);transform:rotate(40deg)}
.join-form{background:rgba(255,255,255,.035);border:1px solid var(--line-dark);border-radius:var(--r-card);padding:28px}
.join-form h3{font-size:18px;font-weight:700;letter-spacing:-.01em}
.join-form .form-sub{font-size:13px;color:rgba(255,255,255,.5);margin-top:6px;margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:7px}
.field input,.field select{width:100%;height:46px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.05);color:#fff;padding:0 14px;transition:border-color .2s,box-shadow .2s,background-color .2s}
.field select option{color:#0E1116}
.field input::placeholder{color:rgba(255,255,255,.32)}
.field input:focus,.field select:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 2px rgba(200,244,65,.32);background:rgba(255,255,255,.08)}
.field.has-error input{border-color:var(--danger)}
.field .err{display:none;font-size:12px;color:#E8735F;margin-top:6px}
.field.has-error .err{display:block}
.join-form .rl-btn{width:100%;margin-top:6px}
.form-note{font-size:12px;color:rgba(255,255,255,.42);margin-top:14px;line-height:1.7}
.form-note a{color:rgba(255,255,255,.78);border-bottom:1px solid rgba(255,255,255,.3);transition:color .2s,border-color .2s}
.form-note a:hover{color:var(--lime);border-color:var(--lime)}
@media (max-width:991px){
  .join{padding:64px 0}
  .join-grid{grid-template-columns:1fr;gap:40px}
}
@media (max-width:575px){.join-form{padding:22px}}

/* ---------- 最新信息 CMS ---------- */
.latest-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:start}
.latest-feature{display:block;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;overflow:hidden;transition:border-color .3s,box-shadow .3s,transform .3s}
.latest-feature:hover{border-color:var(--ink);box-shadow:var(--shadow);transform:translateY(-2px)}
.latest-thumb{overflow:hidden;background:var(--paper-2)}
.latest-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.latest-feature:hover .latest-thumb img{transform:scale(1.03)}
.latest-feature-body{padding:24px}
.latest-feature-body h3{font-size:22px;line-height:1.4;font-weight:700;letter-spacing:-.01em;margin-top:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.latest-feature-body p{font-size:14px;line-height:1.8;color:var(--text-3);margin-top:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.latest-meta{display:flex;align-items:center;gap:10px;margin-top:16px;font-family:var(--font-num);font-size:12px;color:var(--text-3);letter-spacing:.05em;font-variant-numeric:tabular-nums}
.latest-list{display:grid}
.latest-list li{border-bottom:1px solid var(--line)}
.latest-list li:first-child{border-top:1px solid var(--line)}
.latest-list a{display:flex;align-items:center;gap:14px;padding:18px 0 18px 0;transition:padding-left .25s,background-color .25s;position:relative}
.latest-list a::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;background:var(--lime);transform:scaleY(0);transform-origin:top;transition:transform .25s}
.latest-list a:hover{padding-left:14px}
.latest-list a:hover::before{transform:scaleY(1)}
.latest-index{font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--text-3);flex:0 0 auto;font-variant-numeric:tabular-nums}
.latest-item-title{font-size:15px;font-weight:500;line-height:1.5;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.latest-item-date{font-family:var(--font-num);font-size:12px;color:var(--text-3);flex:0 0 auto;letter-spacing:.04em}
.empty-state{border:1px dashed var(--line);border-radius:var(--r-card);padding:56px 24px;text-align:center;background:rgba(236,234,227,.4)}
.empty-state p{font-size:15px;color:var(--text-3)}
.empty-state .rl-btn{margin-top:20px}
@media (max-width:991px){
  .latest-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:575px){
  .latest-feature-body{padding:18px}
  .latest-feature-body h3{font-size:18px}
}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:56px;align-items:start}
.faq-aside h2{font-size:clamp(26px,3.2vw,40px);line-height:1.2;letter-spacing:-.02em;font-weight:800;margin-top:14px}
.faq-aside p{font-size:15px;color:var(--text-3);line-height:1.85;margin-top:16px}
.faq-aside .rl-btn{margin-top:26px}
.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:20px;padding:22px 0;position:relative;transition:padding-left .25s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary h3{font-size:17px;font-weight:700;line-height:1.5;letter-spacing:-.01em;margin:0}
.faq-item summary:hover h3{color:var(--ink-2)}
.faq-icon{position:relative;width:14px;height:14px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink);transition:transform .3s ease}
.faq-icon::before{left:0;top:6px;width:14px;height:2px}
.faq-icon::after{left:6px;top:0;width:2px;height:14px}
.faq-item[open] .faq-icon::after{transform:rotate(90deg) scaleX(0)}
.faq-item[open] summary{padding-left:18px}
.faq-item[open] summary::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:24px;background:var(--lime)}
.faq-answer{padding:0 0 24px 0;font-size:15px;line-height:1.9;color:var(--text-2);max-width:64ch}
@media (max-width:991px){
  .faq-layout{grid-template-columns:1fr;gap:36px}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.6);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:56px}
.footer-brand .brand{color:#fff;font-size:19px}
.footer-brand .brand-mark{background:#fff}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.52);margin-top:18px;max-width:34ch}
.footer-col h4{font-size:13px;font-weight:700;letter-spacing:.1em;color:rgba(255,255,255,.44);margin-bottom:18px}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s,padding-left .2s;display:inline-block}
.footer-col a:hover{color:var(--lime);padding-left:4px}
.footer-bottom{border-top:1px solid var(--line-dark);padding:22px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer-bottom p{font-size:12.5px;color:rgba(255,255,255,.4);letter-spacing:.02em}
.footer-bottom .footer-domain{font-family:var(--font-num);letter-spacing:.08em}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding-bottom:40px}
  .footer-brand{grid-column:span 2}
}
@media (max-width:575px){
  .site-footer{padding-top:52px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-brand{grid-column:span 1}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* ---------- 移动抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:1200;background:var(--ink);color:#fff;padding:22px 24px 32px;display:flex;flex-direction:column;transform:translateX(100%);transition:transform .35s cubic-bezier(.2,.7,.2,1);visibility:hidden}
.drawer.open{transform:translateX(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid var(--line-dark)}
.drawer-head .brand{color:#fff;font-size:17px}
.drawer-head .brand-mark{background:#fff}
.drawer-close{width:38px;height:38px;border:1px solid var(--line-dark);background:transparent;color:#fff;border-radius:var(--r-btn);cursor:pointer;font-size:18px;line-height:1;display:inline-flex;align-items:center;justify-content:center}
.drawer-nav{display:grid;gap:4px;padding:26px 0;flex:1;overflow-y:auto}
.drawer-nav a{font-size:22px;font-weight:700;letter-spacing:-.01em;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.08);color:#fff;opacity:0;transform:translateY(8px);transition:opacity .35s,transform .35s,color .2s}
.drawer.open .drawer-nav a{opacity:1;transform:translateY(0)}
.drawer-nav a:hover{color:var(--lime)}
.drawer-nav a.active{color:var(--lime)}
.drawer .rl-btn{width:100%}
@media (min-width:992px){.drawer{display:none}}

/* 导航断点 */
@media (max-width:991px){
  .main-nav{display:none}
  .nav-cta{display:none}
  .burger{display:inline-block}
  .nav-inner{height:56px}
}
@media (max-width:575px){
  .brand{font-size:16px}
  .brand-mark{width:20px;height:20px}
}

/* roulang page: article */
:root{
  --ink:#0E1116;
  --ink-2:#1A1F26;
  --paper:#F6F5F1;
  --paper-2:#ECEAE3;
  --lime:#C8F441;
  --green:#14453A;
  --text:#0E1116;
  --text-2:#3A3F46;
  --text-3:#6B6F76;
  --line:#DCD9D0;
  --line-dark:rgba(255,255,255,.12);
  --danger:#C6402F;
  --r-card:6px;
  --r-btn:4px;
  --r-img:4px;
  --shadow-hover:0 10px 30px rgba(14,17,22,.08);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"Space Grotesk","DIN Alternate","SF Mono",ui-monospace,"Cascadia Mono","Roboto Mono",monospace;
  --nav-h:64px;
  --space-block:104px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
svg{display:block}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:2px}
::selection{background:var(--lime);color:var(--ink)}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.01em}

/* ============ 顶部细条 ============ */
.topbar{background:var(--ink);color:rgba(255,255,255,.82);height:36px;display:flex;align-items:center;font-size:12.5px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px}
.topbar-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;letter-spacing:.02em}
.topbar-link{color:var(--lime);font-weight:600;letter-spacing:.02em;position:relative;padding-bottom:1px}
.topbar-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--lime);transform:scaleX(0);transform-origin:left;transition:transform .3s ease}
.topbar-link:hover::after{transform:scaleX(1)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:900;
  background:rgba(246,245,241,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--nav-h)}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:-.02em;color:var(--ink)}
.brand-mark{
  width:16px;height:16px;flex:0 0 16px;background:var(--ink);
  clip-path:polygon(0 0,100% 0,100% 62%,62% 100%,0 100%);
  position:relative;
}
.brand-mark::after{content:"";position:absolute;inset:5px 5px auto auto;width:6px;height:6px;background:var(--lime)}
.brand:hover .brand-mark{background:var(--ink-2)}
.main-nav{display:flex;align-items:center;gap:28px}
.main-nav a{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);padding:6px 0;
  display:inline-flex;align-items:center;gap:7px;transition:color .2s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--ink);
  transform:scaleX(0);transform-origin:left;transition:transform .3s cubic-bezier(.2,.7,.2,1);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--ink);font-weight:700}
.main-nav a.active::before{content:"";width:8px;height:8px;background:var(--lime);display:inline-block}
.nav-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-btn);color:var(--text-2);background:#fff;
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.icon-btn svg{width:18px;height:18px}
.icon-btn:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-1px)}
.rl-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  position:relative;overflow:hidden;white-space:nowrap;
  transition:color .35s ease,border-color .2s ease,background-color .2s ease;
}
.rl-btn span{position:relative;z-index:1}
.rl-btn-sm{height:38px;padding:0 18px;font-size:14px}
.rl-btn-solid{background:var(--ink);color:#fff;border:1px solid var(--ink)}
.rl-btn-solid::before{
  content:"";position:absolute;inset:0;background:var(--lime);
  transform:scaleX(0);transform-origin:left;
  transition:transform .4s cubic-bezier(.2,.7,.2,1);
}
.rl-btn-solid:hover{color:var(--ink)}
.rl-btn-solid:hover::before{transform:scaleX(1)}
.rl-btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.rl-btn-ghost:hover{background:var(--ink);color:#fff}
.rl-btn-accent{background:var(--lime);color:var(--ink);border:1px solid var(--lime)}
.rl-btn-accent:hover{background:var(--ink);color:var(--lime);border-color:var(--ink)}
.rl-btn-block{width:100%}
.burger{display:none;width:40px;height:38px;flex-direction:column;justify-content:center;gap:5px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;padding:0 10px}
.burger span{display:block;height:2px;background:var(--ink);transition:transform .3s ease,opacity .3s ease}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.search-panel{
  overflow:hidden;max-height:0;border-top:1px solid transparent;
  transition:max-height .35s cubic-bezier(.2,.7,.2,1),border-color .3s ease;
}
.search-panel.open{max-height:110px;border-top-color:var(--line)}
.search-panel .wrap{display:flex;gap:12px;padding-top:16px;padding-bottom:16px}
.search-panel input{
  flex:1;height:46px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;padding:0 16px;font-size:15px;color:var(--text);transition:border-color .2s ease,box-shadow .2s ease;
}
.search-panel input::placeholder{color:var(--text-3)}
.search-panel input:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 2px var(--lime)}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:1200;background:var(--ink);color:#fff;
  display:flex;flex-direction:column;padding:24px;
  transform:translateX(100%);transition:transform .38s cubic-bezier(.2,.7,.2,1);
  visibility:hidden;
}
.mobile-drawer.open{transform:translateX(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}
.drawer-head .brand{color:#fff}
.drawer-head .brand-mark{background:#fff}
.drawer-close{width:40px;height:40px;border:1px solid var(--line-dark);border-radius:var(--r-btn);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px}
.drawer-nav{display:flex;flex-direction:column;gap:4px;flex:1}
.drawer-nav a{
  font-size:22px;font-weight:700;letter-spacing:-.01em;padding:16px 0;
  border-bottom:1px solid var(--line-dark);color:rgba(255,255,255,.9);
  opacity:0;transform:translateY(8px);transition:opacity .3s ease,transform .3s ease,color .2s ease;
}
.mobile-drawer.open .drawer-nav a{opacity:1;transform:translateY(0)}
.drawer-nav a:nth-child(1){transition-delay:.05s}
.drawer-nav a:nth-child(2){transition-delay:.11s}
.drawer-nav a:nth-child(3){transition-delay:.17s}
.drawer-nav a:nth-child(4){transition-delay:.23s}
.drawer-nav a:nth-child(5){transition-delay:.29s}
.drawer-nav a:nth-child(6){transition-delay:.35s}
.drawer-nav a:hover{color:var(--lime)}
.drawer-foot{margin-top:24px}

/* ============ 面包屑 ============ */
.page-main{padding-top:36px}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:12px;color:var(--text-3);letter-spacing:.02em}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.crumb .sep{color:var(--line);font-size:11px}
.crumb .current{color:var(--text);max-width:min(60ch,100%);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:bottom}

/* ============ 文章头 ============ */
.article-hero{padding:32px 0 36px;border-bottom:1px solid var(--line)}
.cat-badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  border:1px solid var(--ink);font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--ink);
  background:transparent;
}
.article-title{
  margin-top:18px;
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.22;
  font-weight:800;
  letter-spacing:-.02em;
  max-width:22ch;
  color:var(--ink);
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:12px;
  margin-top:20px;font-size:13.5px;color:var(--text-3);
}
.article-meta .mono{color:var(--text-2)}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line);display:inline-block}
.share-row{display:flex;align-items:center;gap:10px;margin-top:22px}
.share-btn{
  width:36px;height:36px;border:1px solid var(--line);border-radius:var(--r-btn);
  display:inline-flex;align-items:center;justify-content:center;color:var(--text-2);background:#fff;
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.share-btn svg{width:16px;height:16px}
.share-btn:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-2px)}

/* ============ 文章布局 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 260px;
  gap:64px;
  padding:56px 0 var(--space-block);
  align-items:start;
}
.article-body{
  max-width:760px;
  font-size:17px;
  line-height:2;
  color:var(--text-2);
  letter-spacing:.005em;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.1em}
.article-body > p:first-of-type::first-letter{
  float:left;font-size:54px;line-height:.92;font-weight:800;
  padding:6px 12px 0 0;color:var(--ink);
}
.article-body h2{
  position:relative;
  margin:2em 0 .6em;
  padding-left:16px;
  font-size:clamp(22px,2.4vw,27px);
  line-height:1.35;
  font-weight:800;
  letter-spacing:-.015em;
  color:var(--ink);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;background:var(--lime);
}
.article-body h3{
  margin:1.6em 0 .5em;
  font-size:20px;line-height:1.45;font-weight:700;color:var(--ink);letter-spacing:-.01em;
}
.article-body h4{margin:1.4em 0 .4em;font-size:17px;font-weight:700;color:var(--ink)}
.article-body a{color:var(--ink);font-weight:600;text-decoration:underline;text-decoration-color:var(--lime);text-decoration-thickness:2px;text-underline-offset:3px}
.article-body a:hover{background:var(--lime)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:0}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:.55em}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;background:var(--ink);border-radius:1px}
.article-body ol{counter-reset:olc}
.article-body ol li{position:relative;padding-left:32px;margin-bottom:.55em;counter-increment:olc}
.article-body ol li::before{
  content:counter(olc,decimal-leading-zero);
  position:absolute;left:0;top:0;font-family:var(--font-mono);font-size:13px;font-weight:700;color:var(--ink);
  background:var(--paper-2);padding:1px 5px;border-radius:3px;line-height:1.6;
}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;
  border-left:3px solid var(--lime);
  background:var(--paper-2);
  color:var(--text-2);
  font-size:16px;line-height:1.9;
  border-radius:0 var(--r-card) var(--r-card) 0;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:8px;margin:1.6em auto;width:100%;object-fit:cover;background:var(--paper-2)}
.article-body figure{margin:1.8em 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--text-3);margin-top:10px;line-height:1.7}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top}
.article-body th{background:rgba(14,17,22,.05);font-weight:700;color:var(--ink)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
.article-body strong{color:var(--ink);font-weight:700}
.article-body code{font-family:var(--font-mono);font-size:.92em;background:var(--paper-2);padding:2px 6px;border-radius:3px}

/* 空态 */
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;background:rgba(236,234,227,.45);
}
.empty-state p{color:var(--text-3);font-size:15px;margin-bottom:18px}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:calc(var(--nav-h) + 24px);display:flex;flex-direction:column;gap:20px}
.side-card{border:1px solid var(--line);border-radius:var(--r-card);background:#fff;padding:20px}
.side-title{
  font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--text-3);
  text-transform:uppercase;margin-bottom:14px;display:flex;align-items:center;gap:8px;
}
.side-title::before{content:"";width:8px;height:8px;background:var(--lime);display:inline-block}
.toc-list{display:flex;flex-direction:column}
.toc-list a{
  display:block;font-size:14px;line-height:1.6;color:var(--text-2);padding:9px 0;
  border-bottom:1px solid var(--line);transition:color .2s ease,padding-left .2s ease;
}
.toc-list li:last-child a{border-bottom:0}
.toc-list a:hover{color:var(--ink);padding-left:6px}
.toc-list a.is-current{color:var(--ink);font-weight:700;padding-left:6px}
.toc-empty{font-size:13.5px;color:var(--text-3);line-height:1.7}
.side-links{display:flex;flex-direction:column}
.side-links a{
  display:flex;gap:10px;font-size:14px;line-height:1.6;color:var(--text-2);
  padding:10px 0;border-bottom:1px solid var(--line);transition:color .2s ease,padding-left .2s ease;
}
.side-links li:last-child a{border-bottom:0}
.side-links a:hover{color:var(--ink);padding-left:6px}
.side-links .num{font-family:var(--font-mono);font-size:12px;color:var(--text-3);padding-top:2px}
.side-cta{background:var(--ink);border-radius:var(--r-card);padding:22px;color:#fff}
.side-cta-label{font-size:12px;letter-spacing:.1em;color:var(--lime);font-weight:700;margin-bottom:10px}
.side-cta-text{font-size:13.5px;line-height:1.75;color:rgba(255,255,255,.72);margin-bottom:18px}

/* ============ 文章尾部 ============ */
.article-foot{border-top:1px solid var(--line);padding-top:28px;margin-top:12px}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:32px}
.tag-label{font-size:12px;letter-spacing:.08em;color:var(--text-3);font-weight:700;margin-right:4px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;
  background:var(--paper-2);color:var(--text-2);font-size:13px;
  transition:background-color .2s ease,color .2s ease;
}
.tag:hover{background:var(--ink);color:var(--lime)}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.post-nav a{
  display:block;border:1px solid var(--line);border-radius:var(--r-card);padding:18px 20px;background:#fff;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.post-nav a:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.post-nav .pn-label{font-size:12px;letter-spacing:.08em;color:var(--text-3);margin-bottom:8px;display:flex;align-items:center;gap:8px}
.post-nav .pn-title{font-size:15.5px;font-weight:700;color:var(--ink);line-height:1.5}
.post-nav .arrow{transition:transform .25s ease;display:inline-block}
.post-nav a:hover .arrow{transform:translateX(4px)}
.post-nav .prev:hover .arrow{transform:translateX(-4px)}

/* ============ 继续阅读 ============ */
.section{padding:var(--space-block) 0;border-top:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--text-3);margin-bottom:12px}
.eyebrow::before{content:"";width:8px;height:8px;background:var(--lime)}
.section-title{font-size:clamp(26px,3.2vw,40px);line-height:1.2;font-weight:800;letter-spacing:-.025em;color:var(--ink)}
.section-sub{font-size:15px;color:var(--text-3);margin-top:10px;max-width:56ch}
.link-more{font-size:14px;font-weight:700;color:var(--ink);display:inline-flex;align-items:center;gap:8px;border-bottom:2px solid var(--lime);padding-bottom:3px;transition:gap .25s ease}
.link-more:hover{gap:14px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.related-card:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.related-thumb{position:relative;aspect-ratio:16/9;background:var(--paper-2);overflow:hidden}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.related-card:hover .related-thumb img{transform:scale(1.04)}
.related-body{padding:20px}
.related-body h3{font-size:17px;line-height:1.5;font-weight:700;color:var(--ink);margin-bottom:10px}
.related-body p{font-size:14px;line-height:1.75;color:var(--text-3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-meta{margin-top:16px;font-size:12px;color:var(--text-3);letter-spacing:.04em;display:flex;align-items:center;gap:8px}
.related-meta::before{content:"";width:16px;height:1px;background:var(--line)}

/* ============ CTA 条 ============ */
.cta-strip{
  background:var(--ink);color:#fff;position:relative;overflow:hidden;
  padding:72px 0;
}
.cta-strip::before{
  content:"";position:absolute;inset:0;
  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;pointer-events:none;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.cta-eyebrow{font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--lime);margin-bottom:16px}
.cta-title{font-size:clamp(26px,3.2vw,38px);line-height:1.2;font-weight:800;letter-spacing:-.025em;margin-bottom:22px}
.cta-points{display:flex;flex-direction:column;gap:12px}
.cta-points li{display:flex;gap:12px;font-size:15px;color:rgba(255,255,255,.76);line-height:1.7}
.cta-points li::before{
  content:"";flex:0 0 16px;width:16px;height:16px;margin-top:5px;border-radius:50%;
  background:var(--lime);
  clip-path:polygon(14% 46%,0 60%,40% 100%,100% 26%,86% 12%,38% 70%);
}
.cta-box{border:1px solid var(--line-dark);border-radius:var(--r-card);padding:30px;background:rgba(255,255,255,.03)}
.cta-box h3{font-size:19px;font-weight:700;margin-bottom:12px;color:#fff}
.cta-box p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);margin-bottom:22px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);padding:72px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;padding-bottom:56px}
.footer-brand .brand{color:#fff;font-size:18px;margin-bottom:18px}
.footer-brand .brand-mark{background:#fff}
.footer-brand p{line-height:1.9;color:rgba(255,255,255,.6);max-width:34ch;font-size:13.5px}
.footer-col h4{font-size:12px;letter-spacing:.1em;color:rgba(255,255,255,.45);font-weight:700;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{color:rgba(255,255,255,.78);font-size:14px;transition:color .2s ease,padding-left .2s ease}
.footer-col a:hover{color:var(--lime);padding-left:4px}
.footer-bottom{
  border-top:1px solid var(--line-dark);padding:24px 0 32px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.45);
}
.footer-domain{font-family:var(--font-mono);letter-spacing:.06em;color:rgba(255,255,255,.35)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .25s ease-out,transform .25s ease-out}
.reveal.in-view{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1399px){
  .wrap{max-width:1200px}
}
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 240px;gap:40px}
  .main-nav{gap:20px}
  .main-nav a{font-size:14px}
}
@media (max-width:991px){
  :root{--space-block:72px}
  .main-nav{display:none}
  .nav-cta{display:none}
  .burger{display:flex}
  .article-layout{grid-template-columns:1fr;gap:40px;padding-top:40px}
  .article-side{position:static;order:2}
  .related-grid{grid-template-columns:1fr 1fr}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .article-title{max-width:none}
  .article-body{max-width:100%}
}
@media (max-width:767px){
  .wrap{padding:0 20px}
  :root{--space-block:60px}
  .page-main{padding-top:24px}
  .article-hero{padding:24px 0 28px}
  .article-meta{gap:10px;font-size:12.5px}
  .article-body{font-size:16px;line-height:1.95}
  .article-body > p:first-of-type::first-letter{font-size:44px;padding-right:10px}
  .post-nav{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .section-head{margin-bottom:28px}
  .topbar-text{font-size:11.5px}
  .search-panel .wrap{padding-top:12px;padding-bottom:12px}
  .cta-strip{padding:52px 0}
  .cta-box{padding:24px}
  .site-footer{padding-top:52px}
  .footer-grid{padding-bottom:40px}
}
@media (max-width:575px){
  .brand{font-size:16px}
  .brand-mark{width:14px;height:14px;flex:0 0 14px}
  .article-title{font-size:27px}
  .article-meta{flex-direction:row}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .crumb .current{max-width:100%}
  .cta-points li{font-size:14px}
  .rl-btn{height:46px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink:#0E1116;
  --ink-2:#1A1F26;
  --paper:#F6F5F1;
  --block:#ECEAE3;
  --lime:#C8F441;
  --green:#14453A;
  --line:#DCD9D0;
  --line-dark:rgba(255,255,255,.12);
  --muted:#6B6F76;
  --sub:#3A3F46;
  --red:#C6402F;
  --radius-card:6px;
  --radius-btn:4px;
  --radius-img:4px;
  --shadow-hover:0 10px 30px rgba(14,17,22,.08);
  --font-cn:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Space Grotesk","Noto Sans SC",ui-monospace,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
a:hover{color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
input,textarea,select{font-family:inherit}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media (min-width:1400px){.wrap{max-width:1280px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(246,245,241,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:900;font-size:17px;letter-spacing:-.02em;color:var(--ink);white-space:nowrap}
.brand-mark{width:14px;height:14px;background:var(--ink);clip-path:polygon(0 0,100% 0,100% 62%,62% 100%,0 100%);flex:0 0 auto;position:relative}
.brand-mark::after{content:"";position:absolute;inset:auto 0 0 auto;width:6px;height:6px;background:var(--lime)}
.main-nav{display:flex;align-items:center;gap:28px}
.main-nav a{
  position:relative;font-size:15px;color:var(--sub);padding:6px 0;transition:color .2s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;background:var(--ink);
  transform:scaleX(0);transform-origin:left;transition:transform .3s cubic-bezier(.2,.7,.2,1);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--ink);font-weight:700}
.main-nav a.active::before{
  content:"";position:absolute;left:-14px;top:50%;width:8px;height:8px;background:var(--lime);
  transform:translateY(-50%);
}
.nav-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);border-radius:var(--radius-btn);
  color:var(--ink);cursor:pointer;transition:border-color .2s ease,background .2s ease;
}
.icon-btn svg{width:17px;height:17px}
.icon-btn:hover{border-color:var(--ink);background:var(--block)}
.burger{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:transparent;cursor:pointer;padding:0;position:relative;
}
.burger span{
  position:absolute;left:11px;width:16px;height:2px;background:var(--ink);
  transition:transform .28s ease,opacity .2s ease;
}
.burger span:nth-child(1){top:13px}
.burger span:nth-child(2){top:19px}
.burger span:nth-child(3){top:25px}
.site-header.menu-open .burger span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header.menu-open .burger span:nth-child(2){opacity:0}
.site-header.menu-open .burger span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.search-panel{
  max-height:0;overflow:hidden;border-top:1px solid transparent;
  transition:max-height .3s ease,border-color .3s ease;
}
.search-panel.open{max-height:96px;border-top-color:var(--line)}
.search-panel .wrap{display:flex;gap:12px;padding-top:14px;padding-bottom:14px}
.search-panel input{
  flex:1;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#fff;padding:0 14px;font-size:14px;color:var(--ink);
}
.search-panel input:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 2px var(--lime)}

/* ---------- buttons ---------- */
.rl-btn{
  position:relative;overflow:hidden;display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 22px;font-size:15px;font-weight:600;border-radius:var(--radius-btn);
  border:1px solid transparent;cursor:pointer;transition:color .3s ease,border-color .3s ease;
  white-space:nowrap;
}
.rl-btn span{position:relative;z-index:2}
.rl-btn::before{
  content:"";position:absolute;inset:0;z-index:1;transform:scaleX(0);transform-origin:left;
  transition:transform .4s cubic-bezier(.2,.7,.2,1);
}
.rl-btn-solid{background:var(--ink);color:var(--paper)}
.rl-btn-solid::before{background:var(--lime)}
.rl-btn-solid:hover{color:var(--ink)}
.rl-btn-solid:hover::before{transform:scaleX(1)}
.rl-btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.rl-btn-ghost::before{background:var(--ink)}
.rl-btn-ghost:hover{color:var(--paper)}
.rl-btn-ghost:hover::before{transform:scaleX(1)}
.rl-btn-lime{background:var(--lime);color:var(--ink)}
.rl-btn-lime::before{background:var(--ink)}
.rl-btn-lime:hover{color:var(--lime)}
.rl-btn-lime:hover::before{transform:scaleX(1)}
.rl-btn-sm{height:38px;padding:0 18px;font-size:14px}

/* ---------- breadcrumb ---------- */
.crumb{padding:22px 0 0;font-size:12px;color:var(--muted);letter-spacing:.02em}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li{display:inline-flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:var(--line)}
.crumb a:hover{color:var(--ink);text-decoration:underline}
.crumb .current{color:var(--ink);font-weight:500}

/* ---------- hero ---------- */
.page-hero{
  margin-top:20px;
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  background-color:var(--ink);
  background-image:linear-gradient(90deg,rgba(14,17,22,.86) 0%,rgba(14,17,22,.62) 55%,rgba(14,17,22,.44) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  color:var(--paper);
  min-height:260px;
  display:flex;
  align-items:center;
}
.page-hero .wrap{padding-top:38px;padding-bottom:38px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--muted);font-weight:500;
}
.eyebrow::before{content:"";width:8px;height:8px;background:var(--lime);flex:0 0 auto}
.eyebrow-light{color:rgba(246,245,241,.72)}
.page-hero h1{
  margin:14px 0 12px;
  font-size:clamp(30px,4.4vw,46px);
  line-height:1.12;letter-spacing:-.03em;font-weight:900;max-width:20ch;
}
.page-hero .hero-sub{color:rgba(246,245,241,.78);font-size:16px;max-width:46ch}
.hero-meta{display:flex;flex-wrap:wrap;gap:28px;margin-top:26px;padding-top:20px;border-top:1px solid var(--line-dark)}
.hero-meta div{display:flex;flex-direction:column;gap:2px}
.hero-meta .num{font-family:var(--font-num);font-size:22px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--lime)}
.hero-meta .label{font-size:12px;color:rgba(246,245,241,.66)}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section-tight{padding:64px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head .eyebrow{margin-bottom:10px}
.sec-title{font-size:clamp(26px,3.2vw,36px);line-height:1.2;letter-spacing:-.02em;font-weight:800}
.sec-desc{color:var(--sub);font-size:15px;margin-top:10px;max-width:56ch}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:26px}
.timeline::before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;background:var(--line)}
.tl-item{position:relative;padding:0 0 34px 0}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:-26px;top:8px;width:11px;height:11px;border-radius:50%;
  background:var(--paper);border:1px solid var(--ink);
}
.tl-item.is-live .tl-dot{background:var(--lime);border-color:var(--ink)}
.tl-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:6px}
.tl-date{font-family:var(--font-num);font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--muted);font-variant-numeric:tabular-nums}
.tl-title{font-size:20px;font-weight:700;line-height:1.4;letter-spacing:-.01em}
.tl-desc{color:var(--sub);font-size:15px;margin-top:6px;max-width:58ch}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  font-size:12px;letter-spacing:.06em;font-weight:500;line-height:1;
}
.badge-live{background:var(--lime);color:var(--ink)}
.badge-soft{background:var(--block);color:var(--ink)}
.badge-line{border:1px solid var(--line);color:var(--sub);background:transparent}
.badge-dark{background:var(--ink);color:var(--paper)}

/* ---------- side sticky ---------- */
.side{display:flex;flex-direction:column;gap:20px}
.sticky-card{
  position:sticky;top:88px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;
}
.side-title{font-size:18px;font-weight:800;letter-spacing:-.01em;margin:14px 0 18px}
.countdown{display:flex;align-items:flex-start;gap:6px;margin-bottom:20px}
.cd-cell{display:flex;flex-direction:column;align-items:center;min-width:52px}
.cd-num{
  font-family:var(--font-num);font-size:30px;font-weight:700;line-height:1.1;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
  transition:transform .25s ease;
}
.cd-num.tick{transform:scale(1.08)}
.cd-unit{font-size:11px;color:var(--muted);letter-spacing:.06em;margin-top:4px}
.cd-sep{font-family:var(--font-num);font-size:24px;line-height:1.35;color:var(--line)}
.sticky-card .rl-btn{width:100%}
.side-list{margin-top:22px;border-top:1px solid var(--line)}
.side-list li{
  display:flex;gap:10px;padding:12px 0;border-bottom:1px solid var(--line);
  font-size:14px;color:var(--sub);line-height:1.6;
}
.side-list li:last-child{border-bottom:0}
.side-list li::before{content:"";width:6px;height:6px;background:var(--lime);flex:0 0 auto;margin-top:8px}
.side-note{
  border:1px dashed var(--line);border-radius:var(--radius-card);padding:18px 20px;
  font-size:13px;color:var(--muted);line-height:1.8;background:rgba(255,255,255,.5);
}
.side-note strong{display:block;color:var(--ink);font-size:14px;margin-bottom:6px}

/* ---------- overview cards ---------- */
.card-grid{display:grid;gap:24px;grid-template-columns:repeat(3,1fr)}
.ov-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
  display:flex;flex-direction:column;
}
.ov-card:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.ov-thumb{position:relative;aspect-ratio:16/9;background:var(--block);overflow:hidden}
.ov-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s cubic-bezier(.2,.7,.2,1)}
.ov-card:hover .ov-thumb img{transform:scale(1.03)}
.ov-thumb::after{
  content:"";position:absolute;inset:auto 0 0 0;height:60px;
  background:linear-gradient(180deg,rgba(14,17,22,0) 0%,rgba(14,17,22,.62) 100%);
}
.ov-tag{
  position:absolute;left:14px;bottom:12px;z-index:2;font-size:12px;letter-spacing:.06em;
  color:var(--paper);display:inline-flex;align-items:center;gap:6px;
}
.ov-tag::before{content:"";width:6px;height:6px;background:var(--lime)}
.ov-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.ov-body h3{font-size:18px;font-weight:700;line-height:1.45;letter-spacing:-.01em}
.ov-body p{font-size:14px;color:var(--sub);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ov-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted)}
.ov-foot .arrow{transition:transform .25s ease;font-family:var(--font-num)}
.ov-card:hover .ov-foot .arrow{transform:translateX(4px);color:var(--ink)}

/* ---------- flow ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.flow-item{padding:28px 24px 0 0;border-right:1px solid var(--line)}
.flow-item:last-child{border-right:0;padding-right:0}
.flow-item:not(:first-child){padding-left:24px}
.flow-num{
  font-family:var(--font-num);font-size:34px;font-weight:700;line-height:1;
  color:var(--ink);letter-spacing:-.03em;font-variant-numeric:tabular-nums;
}
.flow-num::after{content:"";display:block;width:22px;height:3px;background:var(--lime);margin-top:12px}
.flow-item h3{font-size:17px;font-weight:700;margin:14px 0 8px;letter-spacing:-.01em}
.flow-item p{font-size:14px;color:var(--sub);line-height:1.8}

/* ---------- split content ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.split-media{position:relative;border-radius:var(--radius-img);overflow:hidden;background:var(--block);aspect-ratio:4/3}
.split-media img{width:100%;height:100%;object-fit:cover}
.split-media .cap{
  position:absolute;left:14px;bottom:12px;background:rgba(14,17,22,.72);color:var(--paper);
  font-size:12px;padding:4px 10px;border-radius:999px;letter-spacing:.04em;
}
.check-list{margin-top:22px}
.check-list li{
  display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--sub);line-height:1.75;
}
.check-list li:first-child{border-top:1px solid var(--line)}
.check-list li::before{
  content:"";width:14px;height:14px;flex:0 0 auto;margin-top:5px;
  border:1px solid var(--ink);border-radius:2px;background:
    linear-gradient(var(--lime),var(--lime)) 2px 6px/7px 2px no-repeat,
    linear-gradient(var(--lime),var(--lime)) 6px 2px/2px 7px no-repeat;
}
.check-list li strong{color:var(--ink);font-weight:700}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  display:block;position:relative;cursor:pointer;list-style:none;
  padding:22px 46px 22px 18px;border-left:3px solid transparent;
  font-size:17px;font-weight:700;line-height:1.5;letter-spacing:-.01em;
  transition:border-color .25s ease,background .25s ease;
}
.faq-q::-webkit-details-marker{display:none}
.faq-item:hover .faq-q{background:rgba(236,234,227,.55)}
.faq-item[open] .faq-q{border-left-color:var(--lime)}
.faq-q::after{
  content:"";position:absolute;right:10px;top:50%;width:14px;height:1.5px;
  background:var(--ink);transform:translateY(-50%);
}
.faq-q::before{
  content:"";position:absolute;right:16px;top:50%;width:1.5px;height:14px;
  background:var(--ink);transform:translateY(-50%);transition:transform .25s ease,opacity .25s ease;
}
.faq-item[open] .faq-q::before{transform:translateY(-50%) rotate(90deg);opacity:0}
.faq-a{padding:0 46px 24px 18px;font-size:15px;color:var(--sub);line-height:1.9;max-width:70ch}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--ink);color:var(--paper);position:relative;overflow:hidden;
  border-radius:var(--radius-card);
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:56px 56px;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:center;padding:56px 56px}
.cta-band h2{font-size:clamp(24px,3vw,34px);line-height:1.25;letter-spacing:-.02em;font-weight:800;margin-bottom:12px}
.cta-band p{color:rgba(246,245,241,.72);font-size:15px;max-width:52ch}
.cta-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:22px}
.cta-points span{font-size:13px;color:rgba(246,245,241,.82);display:inline-flex;align-items:center;gap:8px}
.cta-points span::before{content:"";width:6px;height:6px;background:var(--lime)}
.cta-actions{display:flex;flex-direction:column;gap:12px;justify-self:end;width:100%;max-width:280px}
.cta-actions .rl-btn{width:100%}
.cta-actions .rl-btn-ghost{border-color:rgba(255,255,255,.4);color:var(--paper)}
.cta-actions .rl-btn-ghost::before{background:var(--paper)}
.cta-actions .rl-btn-ghost:hover{color:var(--ink)}
.cta-note{font-size:12px;color:rgba(246,245,241,.5);text-align:center}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--paper);margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:64px 0 44px}
.footer-brand .brand{color:var(--paper);font-size:18px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--paper)}
.footer-brand .brand-mark::after{background:var(--lime)}
.footer-brand p{font-size:14px;color:rgba(246,245,241,.62);line-height:1.9;max-width:34ch}
.footer-col h4{font-size:13px;letter-spacing:.08em;color:rgba(246,245,241,.55);font-weight:500;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(246,245,241,.86);transition:color .2s ease}
.footer-col a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  border-top:1px solid var(--line-dark);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:rgba(246,245,241,.5);
}
.footer-domain{font-family:var(--font-num);letter-spacing:.06em}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .25s ease-out,transform .25s ease-out}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .flow-item{padding:28px 24px 28px 0;border-bottom:1px solid var(--line)}
  .flow-item:nth-child(2){border-right:0}
  .flow-item:nth-child(3){padding-left:0;border-bottom:0}
  .flow-item:nth-child(4){padding-left:24px;border-bottom:0;border-right:0}
}
@media (max-width:991px){
  .wrap{padding:0 20px}
  .nav-inner{height:56px}
  .burger{display:inline-flex;align-items:center;justify-content:center}
  .nav-cta{display:none}
  .main-nav{
    position:fixed;left:0;right:0;top:56px;bottom:0;
    background:var(--ink);flex-direction:column;align-items:flex-start;gap:0;
    padding:28px 24px 32px;overflow-y:auto;
    opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-8px);
    transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
  }
  .site-header.menu-open .main-nav{opacity:1;visibility:visible;pointer-events:auto;transform:none}
  .main-nav a{
    display:block;width:100%;padding:16px 0;font-size:22px;font-weight:700;
    color:var(--paper);border-bottom:1px solid var(--line-dark);opacity:0;
    transform:translateY(8px);transition:opacity .3s ease,transform .3s ease,color .2s ease;
  }
  .site-header.menu-open .main-nav a{opacity:1;transform:none}
  .main-nav a:nth-child(1){transition-delay:.03s}
  .main-nav a:nth-child(2){transition-delay:.09s}
  .main-nav a:nth-child(3){transition-delay:.15s}
  .main-nav a:nth-child(4){transition-delay:.21s}
  .main-nav a:nth-child(5){transition-delay:.27s}
  .main-nav a:nth-child(6){transition-delay:.33s}
  .main-nav a::after{display:none}
  .main-nav a.active::before{display:none}
  .main-nav a.active{color:var(--lime)}
  .main-nav a:hover{color:var(--lime)}
  .section{padding:64px 0}
  .page-hero{min-height:220px}
  .sticky-card{position:static}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:32px}
  .cta-inner{grid-template-columns:1fr;padding:40px 28px;gap:28px}
  .cta-actions{justify-self:start;max-width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px}
  .footer-brand{grid-column:1 / -1}
  .site-footer{margin-top:64px}
}
@media (max-width:575px){
  .brand{font-size:15px}
  .page-hero h1{max-width:100%}
  .hero-meta{gap:18px}
  .hero-meta .num{font-size:19px}
  .card-grid{grid-template-columns:1fr}
  .flow-grid{grid-template-columns:1fr}
  .flow-item,.flow-item:not(:first-child){padding:24px 0;border-right:0;border-bottom:1px solid var(--line)}
  .flow-item:last-child{border-bottom:0}
  .timeline{padding-left:22px}
  .tl-dot{left:-22px}
  .cd-num{font-size:26px}
  .cd-cell{min-width:46px}
  .rl-btn{height:48px}
  .footer-grid{grid-template-columns:1fr}
  .faq-q{font-size:16px;padding:18px 42px 18px 14px}
  .faq-a{padding:0 42px 20px 14px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: category2 */
:root{
  --ink:#0E1116;
  --ink-2:#1A1F26;
  --paper:#F6F5F1;
  --block:#ECEAE3;
  --lime:#C8F441;
  --green:#14453A;
  --t2:#3A3F46;
  --t3:#6B6F76;
  --line:#DCD9D0;
  --line-dark:rgba(255,255,255,.12);
  --err:#C6402F;
  --r-card:6px;
  --r-btn:4px;
  --r-img:4px;
  --wrap:1200px;
  --font:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --mono:"Space Grotesk","Oswald",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sh:0 10px 30px rgba(14,17,22,.08);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.75;color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.2;font-weight:800;letter-spacing:-.02em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:2px}
::selection{background:var(--lime);color:var(--ink)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 32px}
@media (min-width:1400px){.wrap{max-width:1280px}}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(246,245,241,.92);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;gap:32px;height:64px;position:relative;z-index:6}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:900;font-size:17px;letter-spacing:-.02em;color:var(--ink);flex-shrink:0}
.brand-mark{width:20px;height:20px;background:var(--ink);position:relative;transform:skewX(-12deg);border-radius:2px;flex-shrink:0}
.brand-mark::after{content:"";position:absolute;left:4px;top:4px;width:8px;height:12px;background:var(--lime)}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:auto}
.main-nav a{position:relative;font-size:15px;font-weight:500;color:var(--t2);padding:6px 0;transition:color .2s ease}
.main-nav a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--ink);transition:width .3s cubic-bezier(.2,.7,.2,1)}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{width:100%}
.main-nav a.active{color:var(--ink);font-weight:800}
.main-nav a.active::before{content:"";position:absolute;left:-14px;top:50%;transform:translateY(-50%);width:8px;height:8px;background:var(--lime);border-radius:1px}
.main-nav a.active::after{width:100%}
.drawer-cta{display:none}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.icon-btn{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:var(--r-btn);background:transparent;color:var(--t2);cursor:pointer;transition:border-color .2s ease,color .2s ease}
.icon-btn svg{width:17px;height:17px}
.icon-btn:hover{border-color:var(--ink);color:var(--ink)}
.burger{display:none;width:40px;height:38px;border:1px solid var(--line);border-radius:var(--r-btn);background:transparent;cursor:pointer;padding:0;position:relative}
.burger span{display:block;width:18px;height:2px;background:var(--ink);margin:3px auto;transition:transform .3s ease,opacity .3s ease,background .3s ease}
.site-header.menu-open .burger span{background:var(--paper)}
.site-header.menu-open .burger span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.site-header.menu-open .burger span:nth-child(2){opacity:0}
.site-header.menu-open .burger span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.site-header.menu-open .brand > span:not(.brand-mark){color:var(--paper)}
.site-header.menu-open .brand-mark{background:var(--paper)}
.search-panel{max-height:0;overflow:hidden;border-top:1px solid transparent;transition:max-height .3s ease,border-color .3s ease}
.search-panel.is-open{max-height:120px;border-top-color:var(--line)}
.search-panel .wrap{display:flex;gap:12px;padding-top:14px;padding-bottom:14px}
.search-panel input{flex:1;height:46px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;padding:0 14px;font-size:15px;color:var(--ink);transition:border-color .2s ease,box-shadow .2s ease}
.search-panel input:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 2px var(--lime)}

/* ============ 按钮 ============ */
.rl-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;position:relative;isolation:isolate;overflow:hidden;transition:color .3s ease,border-color .3s ease}
.rl-btn-sm{height:40px;padding:0 18px;font-size:14px}
.rl-btn-solid{color:var(--paper);border-color:var(--ink)}
.rl-btn-solid::before{content:"";position:absolute;inset:0;background:var(--ink);z-index:-2}
.rl-btn-solid::after{content:"";position:absolute;inset:0;background:var(--lime);transform:translateX(-101%);transition:transform .4s cubic-bezier(.2,.7,.2,1);z-index:-1}
.rl-btn-solid:hover{color:var(--ink);border-color:var(--lime)}
.rl-btn-solid:hover::after{transform:translateX(0)}
.rl-btn-ghost{color:var(--ink);border-color:var(--ink);background:transparent}
.rl-btn-ghost::after{content:"";position:absolute;inset:0;background:var(--ink);transform:translateX(-101%);transition:transform .4s cubic-bezier(.2,.7,.2,1);z-index:-1}
.rl-btn-ghost:hover{color:var(--paper)}
.rl-btn-ghost:hover::after{transform:translateX(0)}
.rl-btn-lime{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.rl-btn-lime::after{content:"";position:absolute;inset:0;background:var(--paper);transform:translateX(-101%);transition:transform .4s cubic-bezier(.2,.7,.2,1);z-index:-1}
.rl-btn-lime:hover::after{transform:translateX(0)}
.rl-btn-outline-light{color:var(--paper);border-color:rgba(255,255,255,.4);background:transparent}
.rl-btn-outline-light::after{content:"";position:absolute;inset:0;background:var(--paper);transform:translateX(-101%);transition:transform .4s cubic-bezier(.2,.7,.2,1);z-index:-1}
.rl-btn-outline-light:hover{color:var(--ink);border-color:var(--paper)}
.rl-btn-outline-light:hover::after{transform:translateX(0)}

/* ============ 通用板块 ============ */
.sec{padding:88px 0;border-top:1px solid var(--line)}
.sec-first{border-top:0}
.eyebrow{display:flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--t3);text-transform:uppercase;margin-bottom:16px;font-family:var(--mono)}
.eyebrow .sq{width:8px;height:8px;background:var(--lime);display:inline-block}
.eyebrow.light{color:rgba(246,245,241,.6)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px}
.sec-head h2{font-size:clamp(26px,3.2vw,40px)}
.sec-head p{color:var(--t3);font-size:15px;margin-top:10px;max-width:520px}

/* ============ 面包屑 ============ */
.crumb-bar{padding:20px 0;border-bottom:1px solid var(--line);background:var(--paper)}
.crumb{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--t3);flex-wrap:wrap}
.crumb a{color:var(--t3);transition:color .2s ease}
.crumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.crumb span{color:var(--line)}
.crumb em{font-style:normal;color:var(--ink);font-weight:600}

/* ============ 页头 ============ */
.page-head{padding:64px 0 56px;background:var(--paper);position:relative;overflow:hidden}
.page-head::after{content:"";position:absolute;right:-120px;top:-120px;width:340px;height:340px;border:1px solid var(--line);border-radius:50%;pointer-events:none}
.head-grid{display:grid;grid-template-columns:1fr 300px;gap:56px;align-items:end;position:relative;z-index:1}
.page-head h1{font-size:clamp(34px,5vw,62px);line-height:1.08;letter-spacing:-.03em;font-weight:900}
.page-head h1 .accent{position:relative;display:inline-block}
.page-head h1 .accent::after{content:"";position:absolute;left:0;right:0;bottom:.06em;height:.14em;background:var(--lime);z-index:-1}
.lede{margin-top:20px;font-size:17px;color:var(--t2);max-width:560px;line-height:1.8}
.head-stat{border-top:2px solid var(--ink)}
.head-stat div{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}
.head-stat .k{font-size:13px;color:var(--t3)}
.head-stat .v{font-family:var(--mono);font-size:20px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.01em}

/* ============ 索引胶囊 ============ */
.idx-sec{padding:36px 0 48px;border-top:1px solid var(--line)}
.pill-scroll{display:flex;gap:10px;overflow-x:auto;padding-bottom:10px;scrollbar-width:thin;scrollbar-color:var(--line) transparent}
.pill-scroll::-webkit-scrollbar{height:6px}
.pill-scroll::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px}
.pill{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;padding:10px 20px;border:1px solid var(--line);border-radius:999px;background:#fff;font-size:14px;font-weight:500;color:var(--t2);transition:background .25s ease,color .25s ease,border-color .25s ease,transform .25s ease}
.pill .num{font-family:var(--mono);font-size:12px;color:var(--t3);letter-spacing:.04em;transition:color .25s ease}
.pill:hover,.pill.is-active{background:var(--ink);border-color:var(--ink);color:var(--paper);transform:translateY(-1px)}
.pill:hover .num,.pill.is-active .num{color:var(--lime)}

/* ============ 编号列表 ============ */
.num-list{display:grid;grid-template-columns:1fr 1fr;column-gap:64px}
.num-item{display:grid;grid-template-columns:72px 1fr 26px;gap:20px;align-items:start;padding:28px 0;border-bottom:1px solid var(--line);position:relative;transition:transform .25s ease}
.num-item::before{content:"";position:absolute;left:-16px;top:28px;bottom:28px;width:3px;background:var(--lime);transform:scaleY(0);transform-origin:top;transition:transform .25s ease}
.num-item:hover{transform:translateX(2px)}
.num-item:hover::before{transform:scaleY(1)}
.num-item .num{font-family:var(--mono);font-size:34px;font-weight:700;line-height:1;color:#C8C4B6;font-variant-numeric:tabular-nums;transition:color .25s ease;letter-spacing:-.02em}
.num-item:hover .num{color:var(--ink)}
.num-item strong{display:block;font-size:21px;font-weight:800;letter-spacing:-.02em;color:var(--ink);margin-bottom:6px}
.num-item em{display:block;font-style:normal;font-size:15px;color:var(--t3);line-height:1.75;max-width:420px}
.num-item .arrow{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;color:var(--t3);transition:transform .25s ease,color .25s ease;margin-top:4px}
.num-item .arrow svg{width:16px;height:16px}
.num-item:hover .arrow{transform:translateX(4px);color:var(--ink)}

/* ============ 流程 ============ */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.flow li{border-top:1px solid var(--ink);padding:24px 24px 0 0;position:relative}
.flow .fnum{display:block;font-family:var(--mono);font-size:13px;font-weight:700;color:var(--t3);letter-spacing:.08em;margin-bottom:14px}
.flow .fnum b{color:var(--ink)}
.flow h3{font-size:20px;margin-bottom:10px}
.flow p{font-size:15px;color:var(--t3);line-height:1.8}

/* ============ 表格 ============ */
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);background:#fff}
.spec-table{min-width:680px;font-size:15px}
.spec-table th,.spec-table td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.spec-table th{background:rgba(14,17,22,.05);font-size:13px;font-weight:700;color:var(--t2);letter-spacing:.04em;white-space:nowrap}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody tr{transition:background .2s ease}
.spec-table tbody tr:hover{background:var(--block)}
.spec-table td:first-child{font-weight:700;color:var(--ink);white-space:nowrap}
.spec-table td{color:var(--t2)}
.tag-mini{display:inline-block;font-family:var(--mono);font-size:12px;padding:2px 10px;border:1px solid var(--line);border-radius:999px;color:var(--t3)}

/* ============ FAQ ============ */
.faq-wrap{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:26px 0 26px 0;position:relative;transition:padding-left .3s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"";position:absolute;left:0;top:20px;bottom:20px;width:4px;background:var(--lime);transform:scaleY(0);transform-origin:top;transition:transform .3s ease}
.faq-item[open] summary::before{transform:scaleY(1)}
.faq-item[open] summary{padding-left:20px}
.faq-item summary h3{font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--ink);transition:padding-left .3s ease}
.faq-item[open] summary h3{padding-left:0}
.faq-mark{position:relative;width:16px;height:16px;flex-shrink:0}
.faq-mark::before,.faq-mark::after{content:"";position:absolute;background:var(--ink);transition:transform .3s ease,opacity .3s ease}
.faq-mark::before{left:0;top:7px;width:16px;height:1.5px}
.faq-mark::after{left:7px;top:0;width:1.5px;height:16px}
.faq-item[open] .faq-mark::after{transform:rotate(90deg);opacity:0}
.faq-item .faq-answer{padding:0 0 28px 20px;font-size:15px;line-height:1.9;color:var(--t3);max-width:820px}
.faq-item summary:hover h3{color:var(--green)}

/* ============ CTA ============ */
.cta-band{position:relative;background:var(--ink);color:var(--paper);overflow:hidden;isolation:isolate}
.cta-band::before{content:"";position:absolute;inset:0;background-image:linear-gradient(100deg,rgba(14,17,22,.96) 0%,rgba(14,17,22,.88) 55%,rgba(14,17,22,.72) 100%),url("/assets/images/coverpic/cover-3.png");background-size:cover;background-position:center;z-index:-2;opacity:.9}
.cta-band::after{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;z-index:-1;pointer-events:none}
.cta-inner{padding:80px 0}
.cta-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:center}
.cta-grid h2{font-size:clamp(26px,3.2vw,40px);color:var(--paper)}
.check-list{margin-top:26px;display:grid;gap:14px}
.check-list li{display:flex;gap:12px;font-size:15px;color:rgba(246,245,241,.78);line-height:1.7}
.check-list li::before{content:"";width:14px;height:14px;border:1.5px solid var(--lime);flex-shrink:0;margin-top:6px;position:relative}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.cta-actions .rl-btn{width:100%}
.cta-note{font-size:13px;color:rgba(246,245,241,.55);line-height:1.7}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(246,245,241,.7);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;padding-bottom:56px}
.footer-brand .brand{color:var(--paper);margin-bottom:18px}
.footer-brand .brand-mark{background:var(--paper)}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(246,245,241,.6);max-width:340px}
.footer-col h4{font-size:13px;letter-spacing:.08em;color:rgba(246,245,241,.5);font-weight:600;margin-bottom:18px;font-family:var(--mono);text-transform:uppercase}
.footer-col ul{display:grid;gap:12px}
.footer-col a{font-size:14px;color:rgba(246,245,241,.78);transition:color .2s ease,padding-left .2s ease}
.footer-col a:hover{color:var(--lime);padding-left:4px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0;border-top:1px solid var(--line-dark);font-size:13px;color:rgba(246,245,241,.45);flex-wrap:wrap}
.footer-domain{font-family:var(--mono);letter-spacing:.04em}

/* ============ 动效 ============ */
.js-anim .reveal{opacity:0;transform:translateY(12px);transition:opacity .25s ease-out,transform .25s ease-out}
.js-anim .reveal.in{opacity:1;transform:none}
.js-anim .num-list .num-item:nth-child(2){transition-delay:.06s}
.js-anim .num-list .num-item:nth-child(3){transition-delay:.12s}
.js-anim .num-list .num-item:nth-child(4){transition-delay:.18s}
.js-anim .num-list .num-item:nth-child(5){transition-delay:.24s}
.js-anim .num-list .num-item:nth-child(6){transition-delay:.3s}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .head-grid{grid-template-columns:1fr 260px;gap:40px}
  .num-list{column-gap:44px}
}
@media (max-width:991px){
  .wrap{padding:0 24px}
  .nav-inner{height:56px;gap:16px}
  .burger{display:block}
  .nav-actions .nav-cta,.nav-actions .icon-btn{display:none}
  .main-nav{position:fixed;inset:0;margin:0;background:var(--ink-2);flex-direction:column;align-items:flex-start;justify-content:flex-start;gap:0;padding:96px 28px 40px;z-index:5;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .28s ease,transform .28s ease,visibility .28s ease;overflow-y:auto}
  .main-nav.is-open{opacity:1;visibility:visible;transform:none}
  .main-nav a{width:100%;font-size:22px;font-weight:700;color:var(--paper);padding:18px 0;border-bottom:1px solid var(--line-dark)}
  .main-nav a::after{display:none}
  .main-nav a.active::before{display:none}
  .main-nav a.active{color:var(--lime)}
  .main-nav a:hover{color:var(--lime)}
  .drawer-cta{display:flex;width:100%;margin-top:28px}
  .head-grid{grid-template-columns:1fr;gap:32px;align-items:start}
  .head-stat{max-width:100%}
  .num-list{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr 1fr}
  .flow li{padding:24px 24px 24px 0;margin-bottom:8px}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .sec{padding:64px 0}
  .search-panel .wrap{flex-wrap:wrap}
}
@media (max-width:767px){
  .wrap{padding:0 20px}
  .page-head{padding:40px 0 40px}
  .page-head::after{display:none}
  .page-head h1{font-size:clamp(28px,8vw,40px)}
  .lede{font-size:15px;margin-top:16px}
  .sec{padding:56px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .num-item{grid-template-columns:52px 1fr 22px;gap:14px;padding:22px 0}
  .num-item .num{font-size:26px}
  .num-item strong{font-size:18px}
  .num-item em{font-size:14px}
  .num-item::before{left:-10px}
  .flow{grid-template-columns:1fr;gap:0}
  .flow li{border-top:0;padding:0 0 28px 24px;position:relative}
  .flow::before{content:"";position:absolute;left:0;top:8px;bottom:34px;width:1px;background:var(--line)}
  .flow{position:relative}
  .flow li::before{content:"";position:absolute;left:-4px;top:8px;width:9px;height:9px;border-radius:50%;background:var(--lime);border:2px solid var(--paper);box-shadow:0 0 0 1px var(--line)}
  .flow .fnum{margin-bottom:8px}
  .faq-item summary{padding:20px 0;gap:16px}
  .faq-item[open] summary{padding-left:14px}
  .faq-item .faq-answer{padding-left:14px;font-size:14px}
  .faq-item summary h3{font-size:16px}
  .cta-inner{padding:56px 0}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:40px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
  .site-footer{padding-top:48px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .js-anim .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink:#0E1116;
  --ink-2:#1A1F26;
  --paper:#F6F5F1;
  --paper-2:#ECEAE3;
  --lime:#C8F441;
  --green:#14453A;
  --text-2:#3A3F46;
  --text-3:#6B6F76;
  --line:#DCD9D0;
  --line-dark:rgba(255,255,255,.12);
  --danger:#C6402F;
  --r-s:4px;
  --r-m:6px;
  --r-pill:999px;
  --maxw:1200px;
  --mono:"Space Grotesk","Noto Sans SC",ui-monospace,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{
  outline:2px solid var(--lime);outline-offset:2px;
}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:var(--text-3);font-weight:500;
}
.eyebrow::before{content:"";width:8px;height:8px;background:var(--lime);display:inline-block}
.lead{font-size:16.5px;color:var(--text-2);line-height:1.85}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em}

/* ============ 按钮 ============ */
.rl-btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 22px;border-radius:var(--r-s);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;overflow:hidden;cursor:pointer;
  transition:color .3s ease,border-color .3s ease,background-color .3s ease,transform .25s ease;
}
.rl-btn span{position:relative;z-index:2}
.rl-btn-solid{background:var(--ink);color:var(--paper)}
.rl-btn-solid::before{
  content:"";position:absolute;inset:0;background:var(--lime);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .4s cubic-bezier(.2,.7,.2,1);
}
.rl-btn-solid:hover::before{transform:scaleX(1)}
.rl-btn-solid:hover{color:var(--ink)}
.rl-btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.rl-btn-ghost:hover{background:var(--ink);color:var(--paper)}
.rl-btn-lime{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.rl-btn-lime::before{
  content:"";position:absolute;inset:0;background:var(--ink);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .4s cubic-bezier(.2,.7,.2,1);
}
.rl-btn-lime:hover::before{transform:scaleX(1)}
.rl-btn-lime:hover{color:var(--paper)}
.rl-btn-sm{height:38px;padding:0 16px;font-size:14px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,245,241,.92);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:18px;font-weight:900;letter-spacing:-.02em;color:var(--ink);
  white-space:nowrap;
}
.brand-mark{
  width:14px;height:14px;background:var(--ink);
  transform:skewX(-14deg);flex:0 0 auto;
}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.main-nav a{
  position:relative;padding:8px 11px;font-size:14.5px;font-weight:500;color:var(--text-2);
  transition:color .2s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:11px;right:11px;bottom:2px;height:2px;background:var(--ink);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .28s cubic-bezier(.2,.7,.2,1);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--ink);font-weight:700}
.main-nav a.active::before{
  content:"";display:inline-block;width:8px;height:8px;background:var(--lime);
  margin-right:6px;vertical-align:2px;
}
.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:38px;height:38px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:transparent;color:var(--ink);display:grid;place-items:center;cursor:pointer;
  transition:border-color .2s ease,background-color .2s ease,transform .2s ease;
}
.icon-btn svg{width:17px;height:17px}
.icon-btn:hover{border-color:var(--ink);background:var(--paper-2)}
.burger{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-s);
  background:transparent;cursor:pointer;padding:0;place-items:center;
}
.burger span{display:block;width:18px;height:1.5px;background:var(--ink);margin:4px auto;transition:transform .25s ease,opacity .25s ease}
.search-panel{display:none;border-top:1px solid var(--line);background:var(--paper)}
.search-panel.open{display:block}
.search-panel .wrap{display:flex;gap:12px;padding-top:14px;padding-bottom:14px}
.search-panel input{
  flex:1;height:46px;padding:0 14px;font-size:15px;font-family:inherit;
  border:1px solid var(--line);border-radius:var(--r-s);background:#fff;color:var(--ink);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-panel input:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 2px var(--lime)}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:1060;background:var(--ink);color:var(--paper);
  padding:24px;display:flex;flex-direction:column;
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform .35s cubic-bezier(.2,.7,.2,1),opacity .3s ease,visibility .3s;
}
.mobile-drawer.open{transform:translateY(0);opacity:1;visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid var(--line-dark)}
.mobile-drawer .brand{color:var(--paper)}
.mobile-drawer .brand-mark{background:var(--lime)}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--line-dark);background:transparent;color:var(--paper);
  border-radius:var(--r-s);font-size:22px;line-height:1;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;margin:28px 0 auto}
.drawer-nav a{
  font-size:22px;font-weight:700;color:var(--paper);padding:14px 0;
  border-bottom:1px solid var(--line-dark);
  opacity:0;transform:translateY(8px);
  transition:opacity .3s ease,transform .3s ease,color .2s ease;
}
.mobile-drawer.open .drawer-nav a{opacity:1;transform:none}
.drawer-nav a:nth-child(1){transition-delay:.05s}
.drawer-nav a:nth-child(2){transition-delay:.11s}
.drawer-nav a:nth-child(3){transition-delay:.17s}
.drawer-nav a:nth-child(4){transition-delay:.23s}
.drawer-nav a:nth-child(5){transition-delay:.29s}
.drawer-nav a:nth-child(6){transition-delay:.35s}
.drawer-nav a:hover{color:var(--lime)}
.mobile-drawer .rl-btn{margin-top:24px;width:100%}

/* ============ 面包屑 ============ */
.crumb{padding-top:22px}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--text-3);letter-spacing:.04em}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:var(--line)}
.crumb a{color:var(--text-3);transition:color .2s ease}
.crumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.crumb .current{color:var(--ink);font-weight:600}

/* ============ 页头 ============ */
.page-head{padding:26px 0 60px;border-bottom:1px solid var(--line)}
.head-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center;padding-top:26px}
.page-head h1{
  font-size:clamp(34px,5vw,58px);line-height:1.06;letter-spacing:-.03em;font-weight:900;
  margin:14px 0 18px;
}
.page-head h1 em{font-style:normal;position:relative;white-space:nowrap}
.page-head h1 em::after{
  content:"";position:absolute;left:0;right:0;bottom:4px;height:10px;background:var(--lime);z-index:-1;
}
.page-head .lead{max-width:34em}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.head-visual{position:relative;border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;aspect-ratio:16/11;background:var(--paper-2)}
.head-visual img{width:100%;height:100%;object-fit:cover}
.head-badge{
  position:absolute;left:14px;bottom:14px;right:14px;
  background:rgba(246,245,241,.96);border:1px solid var(--line);border-radius:var(--r-s);
  padding:12px 14px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;
}
.head-badge .stat{display:flex;flex-direction:column;gap:2px}
.head-badge .stat b{font-family:var(--mono);font-size:20px;line-height:1;letter-spacing:-.02em}
.head-badge .stat span{font-size:11px;color:var(--text-3);letter-spacing:.06em}
.head-badge .divider{width:1px;height:24px;background:var(--line)}
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.06em;font-weight:600;
  background:var(--lime);color:var(--ink);
}
.badge-outline{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.06em;font-weight:600;
  border:1px solid var(--line);color:var(--text-2);background:transparent;
}

/* ============ 板块 ============ */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px}
.section-head h2{
  font-size:clamp(26px,3.2vw,40px);line-height:1.2;letter-spacing:-.025em;font-weight:800;margin-top:12px;
}
.section-head p{font-size:15.5px;color:var(--text-2);max-width:30em;margin-top:12px}
.text-link{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;
  border-bottom:1px solid var(--ink);padding-bottom:3px;white-space:nowrap;
  transition:gap .2s ease,color .2s ease;
}
.text-link:hover{gap:14px;color:var(--green)}

/* 三支柱 */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.pillar{border-top:1px solid var(--ink);padding-top:22px}
.pillar .num{font-family:var(--mono);font-size:42px;font-weight:700;line-height:1;letter-spacing:-.04em;color:var(--ink)}
.pillar h3{font-size:20px;font-weight:700;letter-spacing:-.01em;margin:18px 0 10px}
.pillar p{font-size:15px;color:var(--text-2);line-height:1.85}

/* 图文交错 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split+.split{margin-top:92px}
.split-media{
  position:relative;border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;
  aspect-ratio:4/3;background:var(--paper-2);
}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.split-media:hover img{transform:scale(1.03)}
.split-media .corner-tag{
  position:absolute;left:14px;top:14px;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-s);padding:5px 10px;font-size:11px;letter-spacing:.08em;color:var(--text-2);
}
.split-text h2{font-size:clamp(24px,2.8vw,34px);line-height:1.24;letter-spacing:-.02em;font-weight:800;margin:14px 0 14px}
.split-text .lead{font-size:16px}
.check-list{margin-top:26px;display:grid;gap:14px}
.check-list li{
  position:relative;padding-left:34px;font-size:15.5px;line-height:1.8;color:var(--text-2);
  transition:transform .2s ease;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:5px;width:18px;height:18px;
  border:1px solid var(--ink);border-radius:2px;background:transparent;
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:10px;width:8px;height:4px;
  border-left:1.6px solid var(--ink);border-bottom:1.6px solid var(--ink);
  transform:rotate(-45deg);
}
.check-list li:hover{transform:translateX(3px)}
.split-text .rl-btn{margin-top:30px}

/* 流程 */
.flow-section{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:8px}
.flow-item{border-top:1px solid var(--ink);padding-top:18px}
.flow-item .n{font-family:var(--mono);font-size:13px;letter-spacing:.08em;color:var(--text-3)}
.flow-item h3{font-size:18px;font-weight:700;margin:12px 0 8px}
.flow-item p{font-size:14.5px;color:var(--text-2);line-height:1.8}

/* FAQ */
.faq{max-width:900px}
.faq .accordion-item{background:transparent;border:0;border-top:1px solid var(--line);border-radius:0}
.faq .accordion-item:last-child{border-bottom:1px solid var(--line)}
.faq h3.accordion-header{margin:0;font-size:inherit;line-height:inherit}
.faq .accordion-button{
  position:relative;display:block;width:100%;text-align:left;
  background:transparent;box-shadow:none;border:0;border-radius:0;
  padding:22px 56px 22px 0;font-size:19px;font-weight:700;color:var(--ink);
  letter-spacing:-.01em;transition:padding-left .28s ease,box-shadow .28s ease,color .2s ease;
}
.faq .accordion-button:not(.collapsed){
  background:transparent;color:var(--ink);box-shadow:inset 4px 0 0 0 var(--lime);padding-left:18px;
}
.faq .accordion-button:focus{box-shadow:inset 4px 0 0 0 var(--lime);outline:none}
.faq .accordion-button::before{
  content:"";position:absolute;right:15px;top:50%;margin-top:-8px;width:1.5px;height:16px;
  background:var(--ink);transition:transform .3s ease,opacity .3s ease;
}
.faq .accordion-button::after{
  content:"";position:absolute;right:8px;top:50%;margin-top:-.75px;width:16px;height:1.5px;
  background:var(--ink);background-image:none;border:0;width:16px;height:1.5px;transform:none;
}
.faq .accordion-button:not(.collapsed)::before{transform:rotate(90deg);opacity:0}
.faq .accordion-body{
  padding:0 0 24px 18px;font-size:15px;color:var(--text-3);line-height:1.95;max-width:62em;
}

/* CTA 深色通栏 */
.cta-band{position:relative;background:var(--ink);color:var(--paper);overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  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:48px 48px;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1fr .9fr;gap:64px;align-items:start;padding:84px 0}
.cta-inner h2{font-size:clamp(26px,3.2vw,38px);line-height:1.22;letter-spacing:-.025em;font-weight:800;margin:14px 0 16px;color:var(--paper)}
.cta-inner .eyebrow{color:rgba(255,255,255,.6)}
.cta-inner p{font-size:15.5px;color:rgba(255,255,255,.72);line-height:1.9;max-width:32em}
.cta-points{margin-top:26px;display:grid;gap:12px}
.cta-points li{position:relative;padding-left:30px;font-size:15px;color:rgba(255,255,255,.8)}
.cta-points li::before{
  content:"";position:absolute;left:0;top:6px;width:14px;height:14px;border:1px solid rgba(255,255,255,.4);border-radius:2px;
}
.cta-points li::after{
  content:"";position:absolute;left:4px;top:10px;width:7px;height:3.5px;
  border-left:1.5px solid var(--lime);border-bottom:1.5px solid var(--lime);transform:rotate(-45deg);
}
.cta-card{background:var(--paper);color:var(--ink);border-radius:var(--r-m);padding:28px;border:1px solid rgba(255,255,255,.1)}
.cta-card h3{font-size:18px;font-weight:800;letter-spacing:-.01em;margin:0 0 4px}
.cta-card .form-sub{font-size:13px;color:var(--text-3);margin-bottom:20px}
.form-field{margin-bottom:16px}
.form-field label{display:block;font-size:13px;color:var(--text-3);margin-bottom:6px}
.form-field input,.form-field select{
  width:100%;height:46px;padding:0 14px;font-size:15px;font-family:inherit;color:var(--ink);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-s);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-field input:focus,.form-field select:focus{
  outline:none;border-color:var(--ink);box-shadow:0 0 0 2px var(--lime);
}
.form-field .hint{font-size:12px;color:var(--text-3);margin-top:6px}
.form-field.error input,.form-field.error select{border-color:var(--danger)}
.form-field.error .hint{color:var(--danger)}
.form-field .err{display:none;font-size:12px;color:var(--danger);margin-top:6px}
.form-field.error .err{display:block}
.cta-card .rl-btn{width:100%;margin-top:6px}
.form-foot{font-size:12px;color:var(--text-3);margin-top:14px;line-height:1.7}
.form-note{display:none;margin-top:14px;padding:10px 12px;border:1px solid var(--green);border-radius:var(--r-s);font-size:13px;color:var(--green);background:rgba(20,69,58,.06)}
.form-note.show{display:block}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid var(--line-dark)}
.footer-brand .brand{color:var(--paper);font-size:18px}
.footer-brand .brand-mark{background:var(--lime)}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin-top:16px;max-width:34ch}
.footer-col h4{font-size:13px;letter-spacing:.08em;color:var(--paper);font-weight:700;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{display:inline-block;font-size:14px;color:rgba(255,255,255,.64);transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:var(--paper);transform:translateX(3px);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:24px 0 28px;font-size:13px;color:rgba(255,255,255,.46)}
.footer-domain{font-family:var(--mono);letter-spacing:.04em}

/* 进入动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .25s ease-out,transform .25s ease-out}
.reveal.in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .head-grid{gap:40px}
  .split{gap:48px}
}
@media (max-width:991.98px){
  .main-nav,.nav-cta{display:none}
  .burger{display:grid}
  .nav-inner{height:56px}
  .head-grid{grid-template-columns:1fr;gap:32px}
  .head-visual{aspect-ratio:16/9}
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .pillars{grid-template-columns:1fr;gap:24px}
  .split{grid-template-columns:1fr;gap:28px}
  .split+.split{margin-top:64px}
  .split.reverse .split-text{order:1}
  .split.reverse .split-media{order:2}
  .flow{grid-template-columns:repeat(2,1fr);gap:22px}
  .cta-inner{grid-template-columns:1fr;gap:36px;padding:64px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767.98px){
  .wrap{padding:0 20px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .page-head{padding-bottom:44px}
  .head-actions{gap:10px}
  .rl-btn{height:48px}
  .rl-btn-sm{height:40px}
  .faq .accordion-button{font-size:17px;padding:18px 48px 18px 0}
  .cta-card{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:575.98px){
  .head-badge{gap:12px;padding:10px 12px}
  .head-badge .stat b{font-size:17px}
  .pillar .num{font-size:34px}
  .split-text .rl-btn{width:100%}
  .flow{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#0E1116;
  --ink-2:#1A1F26;
  --paper:#F6F5F1;
  --paper-2:#ECEAE3;
  --lime:#C8F441;
  --deep-green:#14453A;
  --text:#0E1116;
  --text-2:#3A3F46;
  --text-3:#6B6F76;
  --line:#DCD9D0;
  --line-dark:rgba(255,255,255,.12);
  --err:#C6402F;
  --r-card:6px;
  --r-btn:4px;
  --wrap:1200px;
  --pad:32px;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"Space Grotesk","SFMono-Regular",ui-monospace,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.7;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 var(--pad);}
.section{padding:96px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:var(--text-3);
  font-weight:600;text-transform:uppercase;margin-bottom:14px;
}
.eyebrow-dot{width:8px;height:8px;background:var(--lime);display:inline-block;flex:none;}
h2{font-size:clamp(26px,3.2vw,40px);line-height:1.2;letter-spacing:-.025em;font-weight:800;}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(246,245,241,.92);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:900;letter-spacing:-.02em;color:var(--ink);flex:none;}
.brand-mark{width:14px;height:14px;background:var(--lime);clip-path:polygon(0 0,100% 0,0 100%);display:inline-block;flex:none;}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto;}
.main-nav a{
  position:relative;display:inline-block;
  padding:8px 12px;font-size:15px;font-weight:500;color:var(--text-2);
  border-radius:4px;
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--ink);transform:scaleX(0);transform-origin:left;
  transition:transform .3s cubic-bezier(.2,.7,.2,1);
}
.main-nav a:hover{color:var(--ink);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{color:var(--ink);font-weight:700;padding-left:20px;}
.main-nav a.active::before{
  content:"";position:absolute;left:2px;top:50%;margin-top:-4px;
  width:8px;height:8px;background:var(--lime);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none;}
.icon-btn{
  width:38px;height:38px;display:grid;place-items:center;
  border:1px solid var(--line);border-radius:4px;background:transparent;
  color:var(--ink);cursor:pointer;transition:border-color .2s ease,background .2s ease;
}
.icon-btn svg{width:18px;height:18px;}
.icon-btn:hover{border-color:var(--ink);background:#fff;}

/* ---------- Buttons ---------- */
.rl-btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;overflow:hidden;cursor:pointer;
  transition:color .3s ease,border-color .3s ease,background .3s ease;
}
.rl-btn span{position:relative;z-index:1;}
.rl-btn::before{
  content:"";position:absolute;inset:0;background:var(--lime);
  transform:scaleX(0);transform-origin:left;
  transition:transform .4s cubic-bezier(.2,.7,.2,1);z-index:0;
}
.rl-btn:hover::before{transform:scaleX(1);}
.rl-btn-sm{height:38px;padding:0 18px;font-size:14px;}
.rl-btn-solid{background:var(--ink);color:var(--paper);}
.rl-btn-solid:hover{color:var(--ink);}
.rl-btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.rl-btn-ghost::before{background:var(--ink);}
.rl-btn-ghost:hover{color:var(--paper);}
.rl-btn-lime{background:var(--lime);border-color:var(--lime);color:var(--ink);}
.rl-btn-lime::before{background:var(--ink);}
.rl-btn-lime:hover{color:var(--paper);}
.rl-btn-outline-light{background:transparent;border-color:rgba(255,255,255,.32);color:#F6F5F1;}
.rl-btn-outline-light::before{background:var(--lime);}
.rl-btn-outline-light:hover{color:var(--ink);border-color:var(--lime);}

.burger{
  display:none;width:38px;height:38px;border:1px solid var(--line);border-radius:4px;
  background:transparent;padding:0;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.burger span{display:block;width:16px;height:2px;background:var(--ink);transition:transform .25s ease,opacity .25s ease;}
.burger.close span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.burger.close span:nth-child(2){opacity:0;}
.burger.close span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.search-panel{display:none;border-top:1px solid var(--line);background:#fff;}
.search-panel.open{display:block;}
.search-panel .wrap{display:flex;gap:12px;padding-top:14px;padding-bottom:14px;}
.search-panel input{
  flex:1;height:46px;padding:0 16px;font-size:15px;
  border:1px solid var(--line);border-radius:4px;background:var(--paper);
  color:var(--text);transition:border-color .2s ease,box-shadow .2s ease;
}
.search-panel input::placeholder{color:var(--text-3);}
.search-panel input:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 2px var(--lime);}

/* ---------- Breadcrumb & page head ---------- */
.page-hero{padding:44px 0 8px;border-bottom:1px solid var(--line);}
.breadcrumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--text-3);margin-bottom:36px;}
.breadcrumb-nav a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb-nav .current{color:var(--text);}
.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;padding-bottom:48px;}
.page-head h1{
  font-size:clamp(34px,5vw,60px);line-height:1.08;letter-spacing:-.03em;font-weight:900;
  margin-bottom:18px;
}
.page-sub{font-size:17px;color:var(--text-2);max-width:620px;line-height:1.75;}
.page-side{display:flex;flex-direction:column;align-items:flex-end;gap:4px;flex:none;padding-bottom:6px;}
.side-num{font-family:var(--font-mono);font-size:56px;line-height:1;font-weight:700;color:var(--paper-2);letter-spacing:-.03em;}
.side-label{font-size:12px;letter-spacing:.1em;color:var(--text-3);}

/* ---------- Help layout ---------- */
.help-section{padding-top:64px;}
.help-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:56px;align-items:start;}
.help-filters{position:sticky;top:88px;align-self:start;}
.filters-title{font-size:12px;letter-spacing:.1em;color:var(--text-3);font-weight:700;margin-bottom:16px;}
.filters-list{display:flex;flex-direction:column;gap:10px;}
.chip{
  display:block;width:100%;text-align:left;
  padding:11px 18px;font-size:14px;font-weight:500;
  border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--text-2);
  cursor:pointer;transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.chip:hover{border-color:var(--ink);color:var(--ink);}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:var(--paper);font-weight:600;}
.filters-note{font-size:13px;line-height:1.8;color:var(--text-3);margin-top:20px;padding-top:20px;border-top:1px solid var(--line);}

.faq-group + .faq-group{margin-top:64px;}
.group-head{display:flex;align-items:center;gap:14px;margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid var(--ink);}
.group-idx{font-family:var(--font-mono);font-size:14px;font-weight:700;color:var(--ink);background:var(--lime);padding:3px 9px;border-radius:3px;}
.group-head h2{font-size:clamp(22px,2.4vw,28px);}

.faq .accordion{--bs-accordion-border-width:0;--bs-accordion-bg:transparent;}
.faq .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;}
.faq .accordion-header{margin:0;}
.faq .accordion-button{
  position:relative;display:flex;align-items:center;gap:16px;
  background:transparent;border:0;border-radius:0;box-shadow:none;
  padding:18px 8px 18px 20px;font-size:17px;font-weight:600;color:var(--ink);
  line-height:1.5;transition:color .2s ease;
}
.faq .accordion-button:not(.collapsed){color:var(--ink);background:transparent;box-shadow:none;}
.faq .accordion-button::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:4px;
  background:var(--lime);opacity:0;transition:opacity .2s ease;
}
.faq .accordion-button:not(.collapsed)::before{opacity:1;}
.faq .accordion-button:hover{color:var(--ink-2);}
.faq .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq .accordion-button:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
.faq .accordion-button::after{
  content:"";width:10px;height:10px;margin-left:auto;flex:none;
  background-image:none;
  border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);
  transform:rotate(45deg) translateY(-2px);
  transition:transform .3s cubic-bezier(.2,.7,.2,1);
}
.faq .accordion-button:not(.collapsed)::after{transform:rotate(-135deg) translateY(-2px);}
.faq .accordion-body{
  padding:0 8px 24px 20px;font-size:15px;line-height:1.9;color:var(--text-2);max-width:760px;
}

/* ---------- Process ---------- */
.process-section{border-top:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:48px;}
.process-grid{display:grid;grid-template-columns:minmax(0,0.9fr) minmax(0,1.1fr);gap:56px;align-items:center;}
.process-media{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:var(--paper-2);aspect-ratio:4/3;
}
.process-media img{width:100%;height:100%;object-fit:cover;}
.process-steps{counter-reset:step;}
.process-steps li{
  position:relative;padding:22px 0 22px 64px;border-bottom:1px solid var(--line);
}
.process-steps li:first-child{padding-top:0;}
.process-steps li:last-child{border-bottom:0;padding-bottom:0;}
.process-steps li::before{
  counter-increment:step;content:"0" counter(step);
  position:absolute;left:0;top:20px;
  font-family:var(--font-mono);font-size:14px;font-weight:700;color:var(--ink);
  background:var(--paper-2);border:1px solid var(--line);
  padding:6px 9px;border-radius:3px;line-height:1;
}
.process-steps li:first-child::before{top:0;}
.process-steps h3{font-size:19px;font-weight:700;letter-spacing:-.01em;margin-bottom:6px;}
.process-steps p{font-size:15px;line-height:1.85;color:var(--text-2);}

/* ---------- Fallback card ---------- */
.fallback-card{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:40px 44px;border:1px solid var(--ink);border-radius:var(--r-card);
  background:transparent;
}
.fallback-card h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:10px;}
.fallback-card p{font-size:15px;line-height:1.85;color:var(--text-2);max-width:620px;}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--ink);color:var(--paper);
  padding:76px 0;border-top:1px solid var(--ink-2);
  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:56px 56px;
}
.cta-band-inner{display:flex;align-items:center;justify-content:space-between;gap:48px;}
.cta-band h2{color:var(--paper);margin-bottom:14px;}
.cta-band p{font-size:15px;line-height:1.85;color:#A9AFA9;max-width:560px;}
.cta-band-actions{display:flex;gap:12px;flex:none;flex-wrap:wrap;}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#C9C7C0;padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .brand{color:var(--paper);margin-bottom:18px;}
.footer-brand p{font-size:14px;line-height:1.85;color:#8E938F;max-width:330px;}
.footer-col h4{font-size:13px;letter-spacing:.08em;color:var(--paper);font-weight:700;margin-bottom:18px;}
.footer-col li + li{margin-top:12px;}
.footer-col a{font-size:14px;color:#9AA09C;}
.footer-col a:hover{color:var(--lime);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin-top:56px;padding:22px 0;border-top:1px solid var(--line-dark);
  font-size:13px;color:#7A807C;
}
.footer-domain{font-family:var(--font-mono);letter-spacing:.04em;}

/* ---------- Reveal ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .25s ease-out,transform .25s ease-out;}
.js .reveal.in{opacity:1;transform:none;}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  :root{--pad:28px;}
  .help-layout{grid-template-columns:220px minmax(0,1fr);gap:40px;}
}
@media (max-width:991px){
  :root{--pad:24px;}
  .section{padding:64px 0;}
  .main-nav{
    position:fixed;left:0;right:0;top:64px;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--ink-2);padding:20px 24px 32px;
    display:none;z-index:999;overflow-y:auto;margin-left:0;
  }
  .main-nav.open{display:flex;}
  .main-nav a{
    color:#E7E8E3;font-size:22px;font-weight:600;padding:18px 0;
    border-bottom:1px solid var(--line-dark);
  }
  .main-nav a::after{display:none;}
  .main-nav a.active{color:var(--lime);padding-left:0;}
  .main-nav a.active::before{display:none;}
  .burger{display:flex;}
  .nav-cta{padding:0 14px;font-size:13px;}
  .page-head{flex-direction:column;align-items:flex-start;gap:24px;padding-bottom:36px;}
  .page-side{flex-direction:row;align-items:baseline;gap:10px;}
  .side-num{font-size:40px;}
  .help-layout{grid-template-columns:1fr;gap:32px;}
  .help-filters{position:static;}
  .filters-list{flex-direction:row;overflow-x:auto;padding-bottom:8px;gap:10px;scrollbar-width:thin;}
  .chip{width:auto;white-space:nowrap;flex:none;}
  .filters-note{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);}
  .process-grid{grid-template-columns:1fr;gap:32px;}
  .fallback-card{flex-direction:column;align-items:flex-start;padding:32px;}
  .cta-band{padding:56px 0;}
  .cta-band-inner{flex-direction:column;align-items:flex-start;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:575px){
  :root{--pad:20px;}
  .nav-inner{height:56px;gap:12px;}
  .brand{font-size:15px;}
  .main-nav{top:56px;}
  .nav-cta{display:none;}
  .page-hero{padding-top:28px;}
  .page-head h1{font-size:clamp(30px,8vw,38px);}
  .page-sub{font-size:15px;}
  .section{padding:56px 0;}
  .help-section{padding-top:44px;}
  .faq .accordion-button{font-size:16px;padding:16px 4px 16px 16px;}
  .faq .accordion-body{padding:0 4px 20px 16px;font-size:14.5px;}
  .process-steps li{padding-left:56px;}
  .fallback-card{padding:26px 22px;}
  .rl-btn{height:46px;padding:0 18px;}
  .cta-band-actions{width:100%;}
  .cta-band-actions .rl-btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .js .reveal{opacity:1;transform:none;}
}

/* roulang page: category5 */
:root{
  --ink:#0E1116;
  --ink-2:#1A1F26;
  --paper:#F6F5F1;
  --paper-2:#ECEAE3;
  --paper-3:#E7E4DA;
  --lime:#C8F441;
  --green:#14453A;
  --text:#0E1116;
  --text-2:#3A3F46;
  --muted:#6B6F76;
  --line:#DCD9D0;
  --line-dark:rgba(255,255,255,.12);
  --red:#C6402F;
  --r-card:6px;
  --r-btn:4px;
  --r-img:4px;
  --shadow-hover:0 10px 30px rgba(14,17,22,.08);
  --wrap:1200px;
  --font:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"Space Grotesk",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:2px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 32px}
::selection{background:var(--lime);color:var(--ink)}

/* ---------- topbar ---------- */
.topbar{background:var(--ink);color:rgba(255,255,255,.72)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:36px;font-size:12px;letter-spacing:.04em}
.topbar-note{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-link{color:var(--lime);font-weight:600;white-space:nowrap}
.topbar-link:hover{text-decoration:underline}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(246,245,241,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:28px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:-.02em;color:var(--ink);white-space:nowrap}
.brand-mark{
  width:16px;height:18px;background:var(--ink);
  clip-path:polygon(0 0,100% 0,64% 100%,0 100%);
  transition:background .25s ease;
}
.brand:hover .brand-mark{background:var(--green)}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:auto}
.main-nav a{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  padding:8px 0;transition:color .2s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:2px;height:2px;width:100%;
  background:var(--ink);transform:scaleX(0);transform-origin:left;
  transition:transform .28s cubic-bezier(.2,.7,.2,1);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--ink);font-weight:700}
.main-nav a.active::before{
  content:"";position:absolute;left:-13px;top:50%;transform:translateY(-50%);
  width:8px;height:8px;background:var(--lime);
}
.main-nav a.active::after{transform:scaleX(1);background:var(--lime)}
.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border:1px solid transparent;border-radius:var(--r-btn);
  background:transparent;color:var(--ink);transition:background .2s ease,border-color .2s ease;
}
.icon-btn svg{width:18px;height:18px}
.icon-btn:hover{background:var(--paper-2);border-color:var(--line)}
.burger{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:38px;height:38px;padding:0 8px;border:1px solid var(--line);
  border-radius:var(--r-btn);background:transparent;
}
.burger span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.search-panel{display:none;border-top:1px solid var(--line);background:var(--paper)}
.search-panel.open{display:block}
.search-panel .wrap{display:flex;gap:12px;padding-top:14px;padding-bottom:14px}
.search-panel input[type="search"]{
  flex:1;height:46px;padding:0 16px;border:1px solid var(--line);
  border-radius:var(--r-btn);background:#fff;font-size:15px;color:var(--text);
}
.search-panel input[type="search"]:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 2px var(--lime)}

/* ---------- buttons ---------- */
.rl-btn{
  position:relative;overflow:hidden;
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 22px;font-size:15px;font-weight:600;letter-spacing:.02em;
  border-radius:var(--r-btn);border:1px solid transparent;
  transition:color .3s ease,border-color .3s ease,background .3s ease;
}
.rl-btn > span{position:relative;z-index:1}
.rl-btn::before{
  content:"";position:absolute;inset:0;background:var(--lime);
  transform:scaleX(0);transform-origin:left;
  transition:transform .4s cubic-bezier(.2,.7,.2,1);
}
.rl-btn:hover::before{transform:scaleX(1)}
.rl-btn-solid{background:var(--ink);color:#fff;border-color:var(--ink)}
.rl-btn-solid:hover{color:var(--ink)}
.rl-btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.rl-btn-ghost::before{background:var(--ink)}
.rl-btn-ghost:hover{color:var(--paper)}
.rl-btn-lime{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.rl-btn-lime::before{background:var(--ink)}
.rl-btn-lime:hover{color:var(--lime)}
.rl-btn-sm{height:38px;padding:0 16px;font-size:14px}

/* ---------- breadcrumb ---------- */
.crumb{background:var(--paper);border-bottom:1px solid var(--line)}
.crumb .wrap{display:flex;align-items:center;gap:8px;height:52px;font-size:12px;color:var(--muted);letter-spacing:.02em}
.crumb a{color:var(--muted);transition:color .2s ease}
.crumb a:hover{color:var(--ink);text-decoration:underline}
.crumb .current{color:var(--text)}
.crumb .sep{color:var(--line)}

/* ---------- page head ---------- */
.page-head{
  position:relative;color:#fff;overflow:hidden;
  background:var(--ink) url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,17,22,.92) 0%,rgba(14,17,22,.72) 55%,rgba(14,17,22,.55) 100%);
}
.page-head-inner{
  position:relative;z-index:1;
  display:flex;align-items:flex-end;justify-content:space-between;gap:40px;
  padding-top:64px;padding-bottom:56px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:var(--muted);font-weight:600;
}
.eyebrow::before{content:"";width:8px;height:8px;background:var(--lime);display:block}
.eyebrow-dark{color:rgba(255,255,255,.68)}
.page-head h1{
  font-size:clamp(34px,4.6vw,56px);line-height:1.08;letter-spacing:-.03em;
  font-weight:900;margin-top:16px;
}
.page-head-sub{margin-top:16px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.76);max-width:520px}
.page-head-stats{display:flex;gap:32px;padding-bottom:6px}
.stat{display:flex;flex-direction:column;gap:4px}
.stat-num{font-family:var(--mono);font-size:30px;font-weight:700;line-height:1;letter-spacing:-.02em;color:var(--lime);font-variant-numeric:tabular-nums}
.stat-label{font-size:11px;letter-spacing:.08em;color:rgba(255,255,255,.6)}

/* ---------- section base ---------- */
.section{padding:88px 0}
.section + .section{border-top:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px}
.section-title{
  font-size:clamp(26px,3.2vw,40px);line-height:1.2;letter-spacing:-.025em;
  font-weight:800;margin-top:12px;
}
.section-sub{margin-top:12px;font-size:15px;color:var(--muted);max-width:560px}
.section-link{font-size:14px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--ink);padding-bottom:2px;white-space:nowrap}
.section-link:hover{color:var(--green);border-color:var(--green)}

/* ---------- archive ---------- */
.archive-layout{display:grid;grid-template-columns:190px minmax(0,1fr);gap:56px;align-items:start}
.year-rail{position:sticky;top:104px}
.year-num{
  display:block;font-family:var(--mono);font-size:clamp(54px,6vw,84px);
  font-weight:700;line-height:.9;letter-spacing:-.05em;color:#DFDBD0;
  font-variant-numeric:tabular-nums;
}
.year-label{display:block;margin-top:14px;font-size:12px;letter-spacing:.14em;color:var(--muted)}
.year-note{margin-top:18px;font-size:13px;line-height:1.9;color:var(--muted);max-width:160px}
.archive-group + .archive-group{margin-top:44px}
.archive-group-title{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--ink);
  padding-bottom:12px;border-bottom:1px solid var(--ink);
}
.archive-group-title span{font-family:var(--mono);font-size:12px;color:var(--muted);letter-spacing:.04em}
.entry-list{margin-top:0}
.entry{
  position:relative;
  display:grid;grid-template-columns:82px minmax(0,1fr) auto 34px;
  gap:20px;align-items:center;
  padding:20px 14px 20px 18px;border-bottom:1px solid var(--line);
  transition:background .25s ease,transform .25s ease;
}
.entry::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  background:var(--lime);transform:scaleY(0);transform-origin:top;
  transition:transform .25s ease;
}
.entry:hover{background:var(--paper-3);transform:translateX(2px)}
.entry:hover::before{transform:scaleY(1)}
.entry-date{font-family:var(--mono);font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.entry-title{font-size:17px;font-weight:700;letter-spacing:-.01em;line-height:1.5}
.entry-desc{margin-top:6px;font-size:14px;line-height:1.8;color:var(--muted)}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:12px;letter-spacing:.06em;color:var(--text-2);white-space:nowrap;
}
.tag-lime{background:var(--lime);border-color:var(--lime);color:var(--ink);font-weight:600}
.tag-line{background:transparent}
.entry-arrow{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border:1px solid var(--line);border-radius:50%;
  color:var(--ink);transition:border-color .25s ease,transform .25s ease,background .25s ease;
}
.entry-arrow svg{width:14px;height:14px}
.entry:hover .entry-arrow{border-color:var(--ink);background:var(--lime);transform:translateX(3px)}

/* ---------- flow ---------- */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line)}
.flow-item{padding:26px 28px 0 0;border-right:1px solid var(--line);transition:background .25s ease}
.flow-item:last-child{border-right:0;padding-right:0}
.flow-item:not(:first-child){padding-left:28px}
.flow-num{display:block;font-family:var(--mono);font-size:38px;font-weight:700;line-height:1;letter-spacing:-.04em;color:var(--paper-3);font-variant-numeric:tabular-nums}
.flow-title{margin-top:14px;font-size:18px;font-weight:700;letter-spacing:-.01em}
.flow-text{margin-top:10px;font-size:14px;line-height:1.85;color:var(--muted)}
.flow-item:hover .flow-num{color:var(--lime)}

/* ---------- check layout ---------- */
.check-layout{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center}
.point-list li{
  position:relative;padding:16px 0 16px 26px;border-bottom:1px solid var(--line);
  font-size:16px;line-height:1.8;color:var(--text-2);
  transition:padding-left .25s ease,color .25s ease;
}
.point-list li:last-child{border-bottom:0}
.point-list li::before{
  content:"";position:absolute;left:0;top:26px;width:8px;height:8px;background:var(--ink);
  transition:background .25s ease;
}
.point-list li:hover{padding-left:32px;color:var(--ink)}
.point-list li:hover::before{background:var(--green)}
.media-figure{position:relative;border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;background:var(--paper-2)}
.media-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.media-caption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 16px;
  font-size:12px;letter-spacing:.06em;color:#fff;
  background:linear-gradient(to top,rgba(14,17,22,.82),rgba(14,17,22,0));
}

/* ---------- faq ---------- */
.faq-wrap{max-width:920px}
.accordion-item{border:0;border-top:1px solid var(--line);background:transparent;border-radius:0}
.accordion-item:last-child{border-bottom:1px solid var(--line)}
.accordion-header{margin:0}
.accordion-button{
  position:relative;display:block;width:100%;text-align:left;
  padding:22px 52px 22px 20px;background:transparent;border:0;border-radius:0;
  font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--ink);
  box-shadow:none;transition:color .2s ease,background .2s ease;
}
.accordion-button::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:4px;background:var(--lime);
  transform:scaleY(0);transform-origin:top;transition:transform .25s ease;
}
.accordion-button:not(.collapsed)::before{transform:scaleY(1)}
.accordion-button:not(.collapsed){background:transparent;color:var(--ink)}
.accordion-button:hover{color:var(--green)}
.accordion-button:focus{box-shadow:none;outline:none}
.accordion-button:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.accordion-button::after{display:none}
.acc-plus{position:absolute;right:20px;top:50%;width:14px;height:14px;transform:translateY(-50%)}
.acc-plus::before{content:"";position:absolute;left:0;right:0;top:50%;height:1.5px;margin-top:-.75px;background:var(--ink)}
.acc-plus::after{content:"";position:absolute;top:0;bottom:0;left:50%;width:1.5px;margin-left:-.75px;background:var(--ink);transition:transform .25s ease}
.accordion-button:not(.collapsed) .acc-plus::after{transform:scaleY(0)}
.accordion-body{padding:0 52px 24px 20px;font-size:15px;line-height:1.9;color:var(--muted)}

/* ---------- cta band ---------- */
.cta-band{position:relative;background:var(--ink);color:#fff;padding:76px 0;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  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:48px 48px;
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:56px;align-items:center}
.cta-title{font-size:clamp(26px,3vw,38px);line-height:1.2;letter-spacing:-.025em;font-weight:800;margin-top:14px}
.cta-text{margin-top:16px;font-size:15px;line-height:1.9;color:rgba(255,255,255,.72);max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-band .rl-btn-ghost{color:#fff;border-color:rgba(255,255,255,.4)}
.cta-band .rl-btn-ghost::before{background:var(--lime)}
.cta-band .rl-btn-ghost:hover{color:var(--ink);border-color:var(--lime)}
.cta-note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.5);text-align:right}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px}
.footer-brand .brand{color:#fff}
.footer-brand .brand-mark{background:var(--lime)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);max-width:320px}
.footer-col h4{font-size:12px;letter-spacing:.14em;color:#fff;font-weight:700;margin-bottom:16px}
.footer-col li{margin-bottom:2px}
.footer-col a{display:inline-block;font-size:14px;line-height:2.1;color:rgba(255,255,255,.68);transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:var(--lime);transform:translateX(3px)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0 28px;border-top:1px solid var(--line-dark);
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-domain{font-family:var(--mono);color:rgba(255,255,255,.4);letter-spacing:.04em}

/* ---------- mobile drawer ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:2000;
  display:flex;flex-direction:column;
  padding:20px 22px 34px;background:var(--ink);
  transform:translateX(100%);visibility:hidden;
  transition:transform .35s cubic-bezier(.2,.7,.2,1),visibility .35s;
  overflow-y:auto;
}
body.drawer-open .mobile-drawer{transform:translateX(0);visibility:visible}
body.drawer-open{overflow:hidden}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:24px;border-bottom:1px solid var(--line-dark)}
.brand-light{color:#fff}
.brand-light .brand-mark{background:var(--lime)}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--line-dark);border-radius:var(--r-btn);
  background:transparent;color:#fff;font-size:22px;line-height:1;
}
.drawer-close:hover{border-color:var(--lime);color:var(--lime)}
.drawer-nav{display:flex;flex-direction:column;padding:24px 0;gap:4px}
.drawer-nav a{
  font-size:22px;font-weight:700;letter-spacing:-.02em;color:#fff;
  padding:12px 0;border-bottom:1px solid var(--line-dark);
  opacity:0;transform:translateY(10px);
  transition:opacity .3s ease,transform .3s ease,color .2s ease;
}
.drawer-nav a:hover{color:var(--lime)}
body.drawer-open .drawer-nav a{opacity:1;transform:none}
body.drawer-open .drawer-nav a:nth-child(1){transition-delay:.06s}
body.drawer-open .drawer-nav a:nth-child(2){transition-delay:.12s}
body.drawer-open .drawer-nav a:nth-child(3){transition-delay:.18s}
body.drawer-open .drawer-nav a:nth-child(4){transition-delay:.24s}
body.drawer-open .drawer-nav a:nth-child(5){transition-delay:.30s}
body.drawer-open .drawer-nav a:nth-child(6){transition-delay:.36s}
.drawer-cta{margin-top:auto;width:100%}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .25s ease-out,transform .25s ease-out}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .archive-layout{grid-template-columns:150px minmax(0,1fr);gap:40px}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow-item{border-right:0;border-bottom:1px solid var(--line);padding:26px 0 24px}
  .flow-item:not(:first-child){padding-left:0}
  .flow-item:nth-child(odd){padding-right:32px;border-right:1px solid var(--line)}
  .flow-item:nth-child(even){padding-left:32px}
}
@media (max-width:991px){
  .main-nav{display:none}
  .burger{display:flex}
  .nav-inner{gap:16px;height:60px}
  .nav-cta{display:none}
  .page-head-inner{flex-direction:column;align-items:flex-start;gap:28px;padding-top:48px;padding-bottom:44px}
  .page-head-stats{gap:40px}
  .section{padding:64px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px}
  .archive-layout{grid-template-columns:minmax(0,1fr);gap:24px}
  .year-rail{position:static;display:flex;align-items:baseline;gap:16px;flex-wrap:wrap}
  .year-num{font-size:56px}
  .year-label{margin-top:0}
  .year-note{max-width:none;margin-top:0;flex-basis:100%}
  .check-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .cta-inner{grid-template-columns:minmax(0,1fr);gap:32px}
  .cta-actions{justify-content:flex-start}
  .cta-note{text-align:left}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .wrap{padding:0 20px}
  .entry{grid-template-columns:minmax(0,1fr);gap:8px;padding:18px 12px 18px 16px}
  .entry-date{order:-1;font-size:13px}
  .entry-arrow{display:none}
  .tag{align-self:flex-start;margin-top:2px}
  .flow{grid-template-columns:minmax(0,1fr)}
  .flow-item{padding:24px 0 22px !important;border-right:0 !important}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
  .search-panel .wrap{flex-wrap:wrap}
}
@media (max-width:520px){
  .brand{font-size:16px}
  .topbar-inner{height:34px;font-size:11px}
  .page-head h1{font-size:32px}
  .stat-num{font-size:24px}
  .section-title{font-size:26px}
  .cta-actions{flex-direction:column;align-items:stretch}
  .cta-actions .rl-btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}