/* roulang page: index */
:root{
  --ink-900:#0B0D12;
  --ink-800:#14171F;
  --ink-700:#1D212B;
  --paper:#F7F6F2;
  --card:#FFFFFF;
  --primary:#2EE6A8;
  --secondary:#7B6BF2;
  --accent-warm:#FFC46B;
  --text-strong:#14161B;
  --text-muted:#5A6070;
  --text-on-dark:#F2F3F5;
  --text-on-dark-muted:#A7ADBB;
  --line-light:#E6E4DE;
  --line-dark:rgba(255,255,255,.12);
  --danger:#D4573F;
  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-card:0 12px 32px -18px rgba(20,22,27,.18);
  --shadow-dark:0 24px 60px -32px rgba(0,0,0,.6);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --bs-body-font-family:var(--font-sans);
  --bs-body-color:var(--text-strong);
  --bs-body-bg:var(--paper);
  --bs-primary:#2EE6A8;
  --bs-border-radius:14px;
  --bs-link-color:#0F8A63;
  --bs-link-hover-color:#0B6E50;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.8;
  color:var(--text-strong);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:#0F8A63;text-decoration:none;transition:color .2s ease}
a:hover{color:#0B6E50}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
::selection{background:rgba(46,230,168,.35);color:#0B0D12}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto}
.section{padding:clamp(64px,9vw,112px) 0}
.section--dark{background:var(--ink-900);color:var(--text-on-dark)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.14em;
  color:#0F8A63;background:rgba(46,230,168,.14);
  border:1px solid rgba(15,138,99,.18);
  border-radius:var(--radius-pill);padding:5px 13px;margin-bottom:16px;
}
.eyebrow--on-dark{color:var(--primary);background:rgba(46,230,168,.10);border-color:rgba(46,230,168,.28)}
h2.section-title{
  font-size:clamp(26px,3.2vw,38px);font-weight:700;line-height:1.2;letter-spacing:-.01em;color:var(--text-strong);
}
.section--dark h2.section-title{color:var(--text-on-dark)}
.section-lead{margin-top:14px;max-width:620px;color:var(--text-muted);font-size:16px;line-height:1.8}
.section--dark .section-lead{color:var(--text-on-dark-muted)}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:rgba(11,13,18,.35);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.10);
  transition:background .24s ease,box-shadow .24s ease;
}
.site-header.is-scrolled{background:rgba(11,13,18,.94);box-shadow:0 14px 34px -22px rgba(0,0,0,.85)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;height:72px}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--text-on-dark)}
.brand:hover{color:var(--text-on-dark)}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),#18B985);
  color:#0B0D12;font-size:17px;font-weight:800;
  box-shadow:0 8px 20px -12px rgba(46,230,168,.9);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-main{font-size:15px;font-weight:700;letter-spacing:.01em}
.brand-sub{font-size:11px;letter-spacing:.16em;color:var(--text-on-dark-muted)}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links .nav-link{
  position:relative;font-size:15px;color:var(--text-on-dark);padding:6px 0;
  transition:color .2s ease;
}
.nav-links .nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease;
}
.nav-links .nav-link:hover{color:var(--primary)}
.nav-links .nav-link:hover::after,.nav-links .nav-link.is-active::after{transform:scaleX(1)}
.nav-links .nav-link.is-active{color:var(--primary)}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-search{
  width:38px;height:38px;display:grid;place-items:center;border-radius:10px;
  color:var(--text-on-dark);border:1px solid rgba(255,255,255,.18);
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.nav-search:hover{color:var(--primary);border-color:rgba(46,230,168,.5);background:rgba(46,230,168,.08)}
.btn-aurora{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--primary);color:#0B0D12;border:none;border-radius:10px;
  padding:14px 26px;font-size:15px;font-weight:600;line-height:1.2;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
  box-shadow:0 12px 26px -16px rgba(46,230,168,.95);
  cursor:pointer;
}
.btn-aurora:hover{transform:translateY(-1px);filter:brightness(1.06);color:#0B0D12;box-shadow:0 16px 32px -16px rgba(46,230,168,1)}
.btn-aurora:active{transform:translateY(0)}
.btn-aurora:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--text-on-dark);
  border:1px solid rgba(255,255,255,.28);border-radius:10px;
  padding:13px 24px;font-size:15px;font-weight:600;line-height:1.2;
  transition:border-color .2s ease,color .2s ease,transform .2s ease,background .2s ease;
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);background:rgba(46,230,168,.08)}
.btn-ghost:active{transform:translateY(0)}
.btn-ghost:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn-nav{padding:10px 20px;font-size:14px;box-shadow:none}
.nav-toggle{
  width:44px;height:44px;display:grid;place-items:center;
  background:transparent;border:1px solid rgba(255,255,255,.22);border-radius:10px;
  color:var(--text-on-dark);font-size:18px;cursor:pointer;
  transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{color:var(--primary);border-color:rgba(46,230,168,.5)}
.nav-toggle:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.nav-collapse{
  background:rgba(11,13,18,.98);
  border-top:1px solid var(--line-dark);
  padding:8px 24px 22px;
}
.nav-collapse .nav-link{
  display:block;padding:14px 0;color:var(--text-on-dark);font-size:16px;
  border-bottom:1px solid rgba(255,255,255,.07);
}
.nav-collapse .nav-link.is-active{color:var(--primary)}
.nav-collapse .btn-aurora{width:100%;margin-top:18px}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:var(--ink-900);color:var(--text-on-dark);
  padding-top:140px;padding-bottom:clamp(64px,8vw,110px);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(180deg,rgba(11,13,18,.76) 0%,rgba(11,13,18,.88) 58%,var(--ink-900) 100%),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(1.6px 1.6px at 12% 22%,rgba(255,255,255,.32),transparent 60%),
    radial-gradient(1.4px 1.4px at 68% 14%,rgba(255,255,255,.26),transparent 60%),
    radial-gradient(1.8px 1.8px at 82% 46%,rgba(46,230,168,.34),transparent 60%),
    radial-gradient(1.4px 1.4px at 34% 68%,rgba(255,255,255,.22),transparent 60%),
    radial-gradient(1.6px 1.6px at 52% 88%,rgba(123,107,242,.30),transparent 60%);
  opacity:.35;
}
.hero .container{position:relative;z-index:2}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;font-weight:600;
  color:var(--primary);background:rgba(46,230,168,.10);
  border:1px solid rgba(46,230,168,.28);
  border-radius:var(--radius-pill);padding:7px 15px;margin-bottom:24px;
}
.hero h1{
  font-size:clamp(38px,5.6vw,64px);
  font-weight:800;line-height:1.06;letter-spacing:-.02em;
  color:var(--text-on-dark);
  max-width:14em;
}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.75;color:var(--text-on-dark-muted);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:0;margin-top:44px;
  border-top:1px solid var(--line-dark);padding-top:26px;
}
.hero-stat{padding-right:26px;margin-right:26px;border-right:1px solid var(--line-dark)}
.hero-stat:last-child{border-right:none;margin-right:0;padding-right:0}
.hero-stat .num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(28px,3.4vw,38px);font-weight:700;line-height:1.1;color:var(--text-on-dark);
}
.hero-stat .num span{font-size:14px;font-weight:600;color:var(--primary);margin-left:4px}
.hero-stat .label{display:block;margin-top:6px;font-size:13px;letter-spacing:.04em;color:var(--text-on-dark-muted)}
.hero-visual{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  box-shadow:var(--shadow-dark);
  aspect-ratio:4/3;
}
.hero-visual img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.hero-visual:hover img{transform:scale(1.03)}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,13,18,.10),rgba(11,13,18,.72));
}
.hero-visual figcaption{
  position:absolute;left:22px;right:22px;bottom:20px;z-index:2;
  font-size:14px;color:var(--text-on-dark);line-height:1.6;
}
.hero-visual figcaption strong{display:block;font-size:16px;font-weight:700;margin-bottom:4px}
.hero-visual figcaption span{color:var(--text-on-dark-muted);font-size:13px}

/* ---------- 功能入口 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.entry-card{
  background:var(--card);border:1px solid var(--line-light);border-radius:var(--radius-md);
  padding:0 0 24px;overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  display:flex;flex-direction:column;
}
.entry-card:hover{transform:translateY(-2px);border-color:rgba(46,230,168,.5);box-shadow:0 18px 42px -22px rgba(20,22,27,.28)}
.entry-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--ink-800)}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.entry-card:hover .entry-thumb img{transform:scale(1.03)}
.entry-body{padding:20px 22px 0}
.entry-body h3{font-size:18px;font-weight:600;line-height:1.4;color:var(--text-strong)}
.entry-body p{margin-top:10px;font-size:14.5px;line-height:1.75;color:var(--text-muted)}
.entry-foot{margin-top:auto;padding:18px 22px 0}
.tag{
  display:inline-flex;align-items:center;font-size:12px;letter-spacing:.04em;
  border-radius:var(--radius-pill);padding:4px 11px;line-height:1.6;
}
.tag--primary{background:rgba(46,230,168,.14);color:#0B7A57}
.tag--purple{background:rgba(123,107,242,.14);color:#4B3FC4}
.tag--warm{background:rgba(255,196,107,.22);color:#8A5B10}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;
  color:#0F8A63;
}
.text-link i{transition:transform .2s ease;font-size:12px}
.text-link:hover{color:#0B6E50}
.text-link:hover i{transform:translateX(3px)}
.text-link--on-dark{color:var(--primary)}
.text-link--on-dark:hover{color:#7CF3C9}

/* ---------- 玩法条带 ---------- */
.play-rows{border-top:1px solid var(--line-light)}
.play-row{
  display:grid;grid-template-columns:150px 1fr;gap:32px;
  padding:38px 0;border-bottom:1px solid var(--line-light);
  transition:background .25s ease;
}
.play-row:hover{background:rgba(255,255,255,.6)}
.play-num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(46px,6vw,76px);font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1.5px rgba(46,230,168,.85);
  letter-spacing:-.02em;
}
.play-body h3{font-size:21px;font-weight:600;line-height:1.4}
.play-body p{margin-top:12px;font-size:15.5px;line-height:1.8;color:var(--text-muted);max-width:62em}
.play-body .text-link{margin-top:16px}

/* ---------- 奖励阶梯 ---------- */
.reward-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:8px}
.reward-card{
  position:relative;background:var(--card);border:1px solid var(--line-light);
  border-radius:var(--radius-md);padding:26px 24px;
  display:flex;flex-direction:column;gap:12px;
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.reward-card:hover{transform:translateY(-2px);border-color:rgba(46,230,168,.45)}
.reward-card h3{font-size:19px;font-weight:600}
.reward-card p{font-size:14.5px;line-height:1.75;color:var(--text-muted)}
.reward-meta{display:flex;align-items:baseline;gap:6px;margin-top:auto;padding-top:8px}
.reward-value{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(24px,2.6vw,30px);font-weight:700;color:#8A5B10;line-height:1.1;
}
.reward-unit{font-size:12.5px;color:var(--text-muted)}
.reward-card.is-current{
  border-color:var(--primary);border-width:1px;
  box-shadow:0 18px 40px -24px rgba(46,230,168,.85);
}
.status-tag{
  position:absolute;top:18px;right:18px;font-size:12px;font-weight:600;
  color:#0B0D12;background:var(--primary);border-radius:var(--radius-pill);
  padding:3px 10px;letter-spacing:.04em;
}
.reward-note{margin-top:26px;font-size:13.5px;color:var(--text-muted)}

/* ---------- 进度组件 ---------- */
.progress-panel{
  background:var(--ink-800);border:1px solid var(--line-dark);
  border-radius:var(--radius-lg);padding:clamp(26px,3.4vw,42px);
  box-shadow:var(--shadow-dark);
}
.progress-top{display:flex;align-items:baseline;justify-content:space-between;gap:16px}
.progress-top .label{font-size:15px;color:var(--text-on-dark)}
.progress-pct{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--primary);line-height:1;
}
.progress-track{
  height:6px;border-radius:var(--radius-pill);background:rgba(255,255,255,.12);
  margin-top:18px;overflow:hidden;
}
.progress-fill{
  height:100%;border-radius:var(--radius-pill);
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  width:0;transition:width .9s cubic-bezier(.22,.8,.28,1);
}
.progress-steps{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px;
}
.progress-step{display:flex;gap:12px;align-items:flex-start}
.step-dot{
  width:22px;height:22px;flex:0 0 22px;border-radius:50%;
  display:grid;place-items:center;font-size:11px;margin-top:2px;
}
.step-dot.done{background:var(--primary);color:#0B0D12}
.step-dot.now{border:2px solid var(--primary);color:var(--primary);animation:pulse 2s ease-in-out infinite}
.step-dot.wait{border:2px solid #5A6070;color:transparent}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(46,230,168,.35)}50%{box-shadow:0 0 0 6px rgba(46,230,168,0)}}
.step-text strong{display:block;font-size:15px;font-weight:600;color:var(--text-on-dark)}
.step-text span{display:block;margin-top:4px;font-size:13px;color:var(--text-on-dark-muted);line-height:1.7}

/* ---------- CTA 条带 ---------- */
.cta-band{background:var(--ink-900);color:var(--text-on-dark);padding:clamp(56px,7vw,96px) 0}
.cta-inner{max-width:720px;margin:0 auto;text-align:center}
.cta-inner h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;color:var(--text-on-dark)}
.cta-inner p{margin-top:14px;font-size:15.5px;color:var(--text-on-dark-muted);line-height:1.8}
.cta-inner .btn-aurora{margin-top:28px}

/* ---------- 最新信息 ---------- */
.lead-post{
  display:grid;grid-template-columns:1.05fr 1fr;gap:0;
  background:var(--card);border:1px solid var(--line-light);border-radius:var(--radius-md);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
  margin-bottom:22px;
}
.lead-post:hover{border-color:rgba(46,230,168,.5);transform:translateY(-2px);box-shadow:0 20px 46px -26px rgba(20,22,27,.3)}
.lead-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--ink-800)}
.lead-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.lead-post:hover .lead-thumb img{transform:scale(1.03)}
.lead-body{padding:clamp(22px,3vw,34px);display:flex;flex-direction:column;gap:14px}
.lead-body h3{font-size:clamp(19px,2.2vw,23px);font-weight:600;line-height:1.45;color:var(--text-strong)}
.lead-body p{font-size:15px;line-height:1.8;color:var(--text-muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.meta-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--text-muted)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--line-light)}
.meta-row time{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.post-list{display:flex;flex-direction:column;gap:14px}
.post-item{
  display:grid;grid-template-columns:200px 1fr 32px;gap:22px;align-items:center;
  background:var(--card);border:1px solid var(--line-light);border-radius:var(--radius-md);
  padding:16px;transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.post-item:hover{border-color:rgba(46,230,168,.55);transform:translateY(-2px);box-shadow:0 16px 36px -24px rgba(20,22,27,.28)}
.post-thumb{aspect-ratio:16/10;border-radius:12px;overflow:hidden;background:var(--ink-800)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-item:hover .post-thumb img{transform:scale(1.03)}
.post-main h3{font-size:17.5px;font-weight:600;line-height:1.45;color:var(--text-strong);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-main p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-main .meta-row{margin-top:10px}
.post-arrow{
  width:32px;height:32px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line-light);color:var(--text-muted);
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.post-item:hover .post-arrow{color:#0F8A63;border-color:rgba(46,230,168,.6);transform:translateX(3px)}
.empty-state{
  min-height:160px;border:1px dashed var(--line-light);border-radius:var(--radius-md);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  background:rgba(255,255,255,.6);text-align:center;padding:28px;
}
.empty-state i{font-size:22px;color:#B6BCC8}
.empty-state strong{font-size:15.5px;font-weight:600;color:var(--text-strong)}
.empty-state span{font-size:13px;color:var(--text-muted)}

/* ---------- FAQ ---------- */
.faq-accordion .accordion-item{
  background:transparent;border:none;border-bottom:1px solid var(--line-light);
}
.faq-accordion .accordion-item:first-child{border-top:1px solid var(--line-light)}
.faq-accordion .accordion-header{margin:0}
.faq-accordion .accordion-button{
  background:transparent;box-shadow:none;border-radius:0;
  padding:22px 0;font-size:17.5px;font-weight:600;color:var(--text-strong);line-height:1.5;
  letter-spacing:0;
}
.faq-accordion .accordion-button:not(.collapsed){color:#0F8A63;box-shadow:none;background:transparent}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--primary);outline-offset:2px}
.faq-accordion .accordion-button::after{
  background-image:none;content:"+";font-family:var(--font-mono);font-size:22px;font-weight:400;
  width:26px;height:26px;display:grid;place-items:center;line-height:1;
  color:var(--text-muted);transition:transform .26s ease,color .26s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:#0F8A63}
.faq-accordion .accordion-button:hover::after{color:#0F8A63}
.faq-accordion .accordion-body{
  padding:0 0 22px 16px;font-size:15.5px;line-height:1.85;color:var(--text-muted);
  border-left:3px solid var(--primary);
}
.faq-accordion .accordion-collapse{transition:height .26s ease}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:var(--text-on-dark);padding:clamp(56px,7vw,88px) 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--text-on-dark-muted);max-width:22em}
.footer-col h4{font-size:14px;font-weight:600;letter-spacing:.08em;color:var(--text-on-dark);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:var(--primary)}
.footer-col p{font-size:14px;line-height:1.85;color:var(--text-on-dark-muted)}
.footer-bottom{
  margin-top:clamp(40px,5vw,60px);border-top:1px solid var(--line-dark);
  padding:24px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom small{font-size:12.5px;color:rgba(255,255,255,.5);line-height:1.8}
.footer-bottom .footer-legal{max-width:640px}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .entry-grid{grid-template-columns:repeat(2,1fr)}
  .reward-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:991.98px){
  .nav-wrap{height:62px}
  .hero{padding-top:112px}
  .hero-stats{margin-top:34px}
  .hero-stat{padding-right:18px;margin-right:18px}
  .hero-visual{margin-top:36px}
  .play-row{grid-template-columns:96px 1fr;gap:20px;padding:30px 0}
  .lead-post{grid-template-columns:1fr}
  .post-item{grid-template-columns:140px 1fr;gap:16px}
  .post-arrow{display:none}
  .progress-steps{grid-template-columns:1fr;gap:16px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .container{padding-left:18px;padding-right:18px}
  .hero h1{font-size:clamp(30px,8.4vw,42px)}
  .hero-sub{font-size:16px}
  .hero-actions .btn-aurora,.hero-actions .btn-ghost{flex:1 1 auto;padding-left:18px;padding-right:18px}
  .hero-stats{display:grid;grid-template-columns:1fr 1fr;gap:18px 0;border-top:none;padding-top:0}
  .hero-stat{border-right:none;padding-right:0;margin-right:0}
  .hero-stat:nth-child(odd){border-right:1px solid var(--line-dark);padding-right:14px}
  .entry-grid{grid-template-columns:1fr}
  .reward-grid{grid-template-columns:1fr}
  .play-row{grid-template-columns:1fr;gap:10px}
  .play-num{font-size:44px}
  .post-item{grid-template-columns:1fr}
  .post-thumb{aspect-ratio:16/9}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .section-head{margin-bottom:30px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
}

/* roulang page: article */
:root{
  --bs-primary:#2EE6A8;
  --bs-body-color:#14161B;
  --bs-body-bg:#F7F6F2;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;

  --ink-900:#0B0D12;
  --ink-800:#14171F;
  --ink-700:#1D212B;
  --paper:#F7F6F2;
  --card:#FFFFFF;
  --primary:#2EE6A8;
  --primary-deep:#149E72;
  --secondary:#7B6BF2;
  --accent-warm:#FFC46B;
  --text-strong:#14161B;
  --text-muted:#5A6070;
  --text-on-dark:#F2F3F5;
  --text-on-dark-muted:#A7ADBB;
  --line-light:#E6E4DE;
  --line-dark:rgba(255,255,255,.12);
  --danger:#D4573F;
  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-card:0 12px 32px -18px rgba(20,22,27,.18);
  --shadow-dark:0 24px 60px -32px rgba(0,0,0,.6);
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.8;
  color:var(--text-strong);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .24s ease,opacity .24s ease}
a:hover{color:var(--primary-deep)}
ul,ol{margin:0}
h1,h2,h3,h4,h5,p{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ============ 导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1030;
  background:rgba(11,13,18,.35);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.10);
  box-shadow:0 12px 30px -26px rgba(0,0,0,.9);
  transition:background .24s ease,box-shadow .24s ease;
}
.site-header.is-scrolled{
  background:rgba(11,13,18,.94);
  box-shadow:0 20px 44px -26px rgba(0,0,0,.95);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text-on-dark);
}
.brand:hover{color:var(--text-on-dark)}
.brand-mark{
  width:34px;height:34px;
  flex:0 0 34px;
  display:grid;place-items:center;
  border-radius:10px;
  background:var(--primary);
  color:#0B0D12;
  font-size:17px;font-weight:800;
  line-height:1;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-main{font-size:15px;font-weight:700;letter-spacing:.02em;color:var(--text-on-dark)}
.brand-sub{font-size:11px;letter-spacing:.14em;color:var(--text-on-dark-muted)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:var(--text-on-dark);
  opacity:.9;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s ease;
}
.nav-link:hover{color:var(--primary);opacity:1}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary);opacity:1}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-search{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.18);
  color:var(--text-on-dark);
  font-size:14px;
  transition:border-color .24s ease,color .24s ease,background .24s ease;
}
.nav-search:hover{color:var(--primary);border-color:rgba(46,230,168,.55);background:rgba(46,230,168,.08)}
.btn-aurora{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  border:1px solid transparent;
  border-radius:10px;
  background:var(--primary);
  color:#0B0D12;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease,background .2s ease;
}
.btn-aurora:hover{
  color:#0B0D12;
  transform:translateY(-1px);
  filter:brightness(1.06);
  box-shadow:0 16px 30px -16px rgba(46,230,168,.75);
}
.btn-aurora:active{transform:translateY(0);box-shadow:none}
.btn-aurora.is-disabled,
.btn-aurora:disabled{
  background:#2A2F3A;
  color:rgba(255,255,255,.42);
  cursor:not-allowed;
  transform:none;
  box-shadow:none;
}
.btn-nav{height:38px;padding:0 20px;font-size:14px}
.nav-toggle{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);
  color:var(--text-on-dark);
  font-size:17px;
}
.nav-toggle:hover{background:rgba(255,255,255,.12)}
.nav-collapse{
  background:rgba(11,13,18,.97);
  border-top:1px solid rgba(255,255,255,.10);
  padding:10px 20px 22px;
}
.nav-collapse.show{display:flex;flex-direction:column;gap:2px}
.nav-collapse .nav-link{
  padding:13px 0;
  font-size:16px;
  line-height:1.5;
  border-bottom:1px solid rgba(255,255,255,.07);
}
.nav-collapse .nav-link::after{display:none}
.nav-collapse .btn-aurora{margin-top:14px;height:46px;width:100%}

/* ============ 文章头 ============ */
.article-hero{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  color:var(--text-on-dark);
  padding-top:calc(72px + 52px);
  padding-bottom:56px;
}
.article-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(180deg,rgba(11,13,18,.82) 0%,rgba(11,13,18,.95) 68%,rgba(11,13,18,.99) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  z-index:0;
}
.article-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(circle at 18% 26%,rgba(46,230,168,.14) 0%,rgba(46,230,168,0) 42%),
                   radial-gradient(circle at 82% 72%,rgba(123,107,242,.12) 0%,rgba(123,107,242,0) 46%);
  z-index:0;
  pointer-events:none;
}
.article-hero .hero-inner{position:relative;z-index:1}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--text-on-dark-muted);
  margin-bottom:26px;
}
.crumbs a{color:var(--text-on-dark-muted)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{opacity:.5}
.crumbs .current{
  color:var(--text-on-dark);
  max-width:min(48ch,70vw);
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.cat-pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(46,230,168,.35);
  background:rgba(46,230,168,.12);
  color:var(--primary);
  font-size:12px;
  letter-spacing:.04em;
}
.article-hero h1{
  margin:20px 0 0;
  font-size:clamp(26px,3.6vw,44px);
  font-weight:800;
  line-height:1.22;
  letter-spacing:-.015em;
  color:var(--text-on-dark);
  max-width:22ch;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  margin-top:24px;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--text-on-dark-muted);
}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:7px}
.meta-row .meta-item i{color:var(--primary);font-size:12px}
.meta-row time{font-variant-numeric:tabular-nums;font-family:var(--font-mono)}
.meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.32)}

/* ============ 正文区 ============ */
.article-main{
  background:var(--paper);
  padding:clamp(40px,6vw,76px) 0 clamp(56px,8vw,100px);
}
.article-panel{
  max-width:820px;
  margin:0 auto;
  background:var(--card);
  border:1px solid var(--line-light);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  padding:clamp(22px,4vw,52px);
}
.prose{
  font-size:17px;
  line-height:1.85;
  color:#2A2E38;
  word-break:break-word;
}
.prose > *:first-child{margin-top:0}
.prose p{margin:0 0 1.2em}
.prose h2{
  margin:2em 0 .7em;
  padding-left:14px;
  border-left:3px solid var(--primary);
  font-size:clamp(21px,2.4vw,27px);
  font-weight:700;
  line-height:1.32;
  color:var(--text-strong);
}
.prose h3{
  margin:1.7em 0 .6em;
  font-size:19px;
  font-weight:600;
  line-height:1.42;
  color:var(--text-strong);
}
.prose h4{
  margin:1.5em 0 .5em;
  font-size:17px;
  font-weight:600;
  color:var(--text-strong);
}
.prose strong{color:var(--text-strong);font-weight:700}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.4em}
.prose li{margin-bottom:.5em}
.prose li::marker{color:var(--primary-deep)}
.prose blockquote{
  margin:1.6em 0;
  padding:16px 22px;
  border-left:3px solid var(--secondary);
  background:#F7F6F2;
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text-muted);
  font-size:16px;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{
  border-radius:var(--radius-md);
  border:1px solid var(--line-light);
  margin:1.6em auto;
}
.prose figure{margin:1.6em 0}
.prose figcaption{
  margin-top:10px;
  text-align:center;
  font-size:13px;
  color:var(--text-muted);
}
.prose table{
  width:100%;
  border-collapse:collapse;
  margin:1.6em 0;
  font-size:15px;
  line-height:1.7;
}
.prose th,.prose td{
  border:1px solid var(--line-light);
  padding:11px 14px;
  text-align:left;
  vertical-align:top;
}
.prose th{
  background:#F2F1EC;
  font-weight:600;
  color:var(--text-strong);
  white-space:nowrap;
}
.prose tr:nth-child(even) td{background:#FBFAF7}
.prose hr{
  border:0;
  border-top:1px solid var(--line-light);
  margin:2.4em 0;
}
.prose a{
  color:var(--primary-deep);
  text-decoration:underline;
  text-underline-offset:3px;
}
.prose a:hover{color:var(--primary)}
.prose code{
  font-family:var(--font-mono);
  font-size:.9em;
  background:#F2F1EC;
  border:1px solid var(--line-light);
  border-radius:6px;
  padding:1px 6px;
}
.prose pre{
  background:var(--ink-800);
  color:var(--text-on-dark);
  border-radius:var(--radius-md);
  padding:18px 20px;
  overflow-x:auto;
  margin:1.6em 0;
  font-size:14px;
  line-height:1.7;
}
.prose pre code{background:none;border:0;padding:0;color:inherit}

.empty-state{
  border:1px dashed #D8D5CC;
  border-radius:var(--radius-md);
  padding:56px 24px;
  text-align:center;
  background:#FBFAF7;
}
.empty-state i{
  font-size:28px;
  color:var(--secondary);
  margin-bottom:14px;
  display:block;
}
.empty-title{
  font-size:19px;
  font-weight:600;
  color:var(--text-strong);
  margin-bottom:8px;
}
.empty-desc{
  font-size:14px;
  line-height:1.8;
  color:var(--text-muted);
  max-width:44ch;
  margin:0 auto 22px;
}
.empty-state .btn-aurora{padding:12px 24px;font-size:14px}

/* ============ 文末推荐 ============ */
.related-block{
  max-width:820px;
  margin:clamp(36px,5vw,52px) auto 0;
}
.related-head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  margin-bottom:20px;
}
.related-head h2{
  font-size:20px;
  font-weight:700;
  color:var(--text-strong);
}
.related-head span{font-size:13px;color:var(--text-muted)}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.related-card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:22px 22px 20px;
  background:var(--card);
  border:1px solid var(--line-light);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-card);
  transition:border-color .3s ease,transform .3s ease,box-shadow .3s ease;
}
.related-card:hover{
  border-color:rgba(46,230,168,.5);
  transform:translateY(-2px);
  color:inherit;
}
.badge-soft{
  align-self:flex-start;
  display:inline-block;
  padding:4px 11px;
  border-radius:var(--radius-pill);
  background:rgba(46,230,168,.12);
  color:var(--primary-deep);
  font-size:12px;
  letter-spacing:.04em;
  line-height:1.6;
}
.related-card h3{
  font-size:16px;
  font-weight:600;
  line-height:1.45;
  color:var(--text-strong);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-card p{
  font-size:13px;
  line-height:1.75;
  color:var(--text-muted);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-arrow{
  margin-top:auto;
  font-size:13px;
  color:var(--primary-deep);
  transition:transform .3s ease;
}
.related-card:hover .related-arrow{transform:translateX(4px)}

.back-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:36px;
  font-size:15px;
  font-weight:600;
  color:var(--text-strong);
}
.back-link i{transition:transform .24s ease;font-size:13px;color:var(--primary-deep)}
.back-link:hover{color:var(--primary-deep)}
.back-link:hover i{transform:translateX(-4px)}

/* ============ 结尾 CTA ============ */
.cta-band{
  background:var(--ink-900);
  color:var(--text-on-dark);
  padding:clamp(52px,7vw,84px) 0;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(circle at 50% 0%,rgba(46,230,168,.13) 0%,rgba(46,230,168,0) 55%);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  z-index:1;
  max-width:660px;
  margin:0 auto;
  text-align:center;
}
.cta-inner h2{
  font-size:clamp(24px,3vw,34px);
  font-weight:700;
  line-height:1.3;
  color:var(--text-on-dark);
}
.cta-inner p{
  margin:14px 0 28px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-on-dark-muted);
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-900);
  color:rgba(255,255,255,.72);
  padding:clamp(48px,7vw,80px) 0 0;
  border-top:1px solid var(--line-dark);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.25fr;
  gap:36px;
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.62);
  max-width:34ch;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--text-on-dark);
  margin-bottom:16px;
}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:var(--primary)}
.footer-col p{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.62);
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  margin-top:44px;
  padding:20px 0 26px;
  border-top:1px solid var(--line-dark);
}
.footer-bottom small{
  font-size:12px;
  letter-spacing:.02em;
  color:rgba(255,255,255,.5);
}
.footer-legal{max-width:52ch;line-height:1.7}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .nav-links{gap:22px}
}
@media (max-width:991.98px){
  .nav-wrap{height:60px}
  .article-hero{padding-top:calc(60px + 40px);padding-bottom:44px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .related-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767.98px){
  .container{padding-left:18px;padding-right:18px}
  .article-hero h1{max-width:none}
  .article-panel{border-radius:var(--radius-md);padding:22px 18px}
  .prose{font-size:16px;line-height:1.85}
  .prose h2{font-size:21px;margin-top:1.8em}
  .prose h3{font-size:18px}
  .prose table{font-size:14px}
  .prose th,.prose td{padding:9px 10px}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .crumbs .current{max-width:62vw}
}
@media (max-width:479.98px){
  .meta-row{gap:10px;font-size:12px}
  .cta-inner .btn-aurora{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --ink-900:#0B0D12;
  --ink-800:#14171F;
  --ink-700:#1D212B;
  --paper:#F7F6F2;
  --card:#FFFFFF;
  --primary:#2EE6A8;
  --primary-soft:rgba(46,230,168,.12);
  --secondary:#7B6BF2;
  --accent-warm:#FFC46B;
  --text-strong:#14161B;
  --text-muted:#5A6070;
  --text-on-dark:#F2F3F5;
  --text-on-dark-muted:#A7ADBB;
  --line-light:#E6E4DE;
  --line-dark:rgba(255,255,255,.12);
  --danger:#D4573F;

  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:24px;
  --radius-pill:999px;

  --shadow-card:0 12px 32px -18px rgba(20,22,27,.18);
  --shadow-dark:0 24px 60px -32px rgba(0,0,0,.6);

  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;

  --bs-body-font-family:var(--font-sans);
  --bs-body-color:var(--text-strong);
  --bs-body-bg:var(--paper);
  --bs-border-radius:var(--radius-md);
  --bs-primary:#2EE6A8;
  --bs-link-color:#14161B;
  --bs-link-hover-color:#0B0D12;
}

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

html{scroll-behavior:smooth;}

body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.8;
  color:var(--text-strong);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{max-width:100%;height:auto;display:block;}
a{color:var(--text-strong);text-decoration:none;transition:color .24s ease;}
a:hover{color:#0B0D12;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}

::selection{background:rgba(46,230,168,.32);color:var(--text-strong);}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ============ 导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1030;
  background:rgba(11,13,18,.35);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.10);
  box-shadow:0 10px 30px -24px rgba(0,0,0,.9);
  transition:background .24s ease, box-shadow .24s ease, border-color .24s ease;
}
.site-header.is-scrolled{
  background:rgba(11,13,18,.94);
  box-shadow:0 18px 40px -28px rgba(0,0,0,1);
  border-bottom-color:rgba(255,255,255,.08);
}
.nav-wrap{
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-on-dark);}
.brand:hover{color:var(--text-on-dark);}
.brand-mark{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:linear-gradient(140deg,var(--primary),var(--secondary));
  color:#0B0D12;
  font-weight:800;
  font-size:16px;
  letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:15px;font-weight:700;letter-spacing:.01em;}
.brand-sub{font-size:11px;letter-spacing:.12em;color:var(--text-on-dark-muted);}

.nav-links{align-items:center;gap:6px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  color:var(--text-on-dark);
  border-radius:var(--radius-sm);
  transition:color .24s ease, background .24s ease;
}
.nav-link:hover{color:var(--primary);background:rgba(255,255,255,.05);}
.nav-link:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.nav-link.is-active{color:var(--text-on-dark);}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:0;
  height:2px;
  background:var(--primary);
  border-radius:2px;
}
.nav-right{align-items:center;gap:12px;}
.nav-search{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  color:var(--text-on-dark);
  border:1px solid rgba(255,255,255,.16);
  transition:color .24s ease,border-color .24s ease,background .24s ease;
}
.nav-search:hover{color:var(--primary);border-color:rgba(46,230,168,.5);background:rgba(46,230,168,.08);}
.nav-search:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

.btn-aurora{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;
  font-size:15px;font-weight:600;
  color:#0B0D12;
  background:var(--primary);
  border:1px solid var(--primary);
  border-radius:10px;
  cursor:pointer;
  transition:transform .2s ease, box-shadow .2s ease, filter .2s ease, background .2s ease;
  box-shadow:0 14px 30px -20px rgba(46,230,168,.9);
}
.btn-aurora:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 18px 34px -18px rgba(46,230,168,.85);color:#0B0D12;}
.btn-aurora:active{transform:translateY(0);filter:brightness(.98);}
.btn-aurora:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.btn-nav{padding:9px 18px;font-size:14px;height:38px;border-radius:10px;}

.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;
  font-size:15px;font-weight:600;
  color:var(--text-on-dark);
  background:transparent;
  border:1px solid rgba(255,255,255,.28);
  border-radius:10px;
  cursor:pointer;
  transition:transform .2s ease,border-color .2s ease,background .2s ease,color .2s ease;
}
.btn-ghost:hover{transform:translateY(-1px);border-color:rgba(46,230,168,.6);color:var(--primary);background:rgba(46,230,168,.06);}
.btn-ghost:active{transform:translateY(0);}
.btn-ghost:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

.nav-toggle{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
  border-radius:10px;
  color:var(--text-on-dark);
  font-size:17px;
}
.nav-toggle:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.nav-collapse{
  border-top:1px solid rgba(255,255,255,.1);
  background:rgba(11,13,18,.96);
  padding:14px 24px 20px;
}
.nav-collapse .nav-link{display:block;padding:12px 4px;font-size:16px;}
.nav-collapse .nav-link.is-active::after{left:4px;right:auto;width:26px;bottom:4px;}
.nav-collapse .btn-aurora{margin-top:14px;width:100%;}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  color:var(--text-on-dark);
  padding:calc(72px + clamp(48px,6vw,84px)) 0 clamp(44px,5.6vw,72px);
}
.hero-bg{
  position:absolute;inset:0;
  background-size:cover;
  background-position:center;
  opacity:.62;
}
.hero-bg::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,13,18,.52) 0%,rgba(11,13,18,.86) 62%,rgba(11,13,18,.96) 100%);
}
.hero-lines{
  position:absolute;
  top:0;right:0;bottom:0;
  width:min(46%,560px);
  pointer-events:none;
  background:
    repeating-linear-gradient(90deg,rgba(255,255,255,.12) 0 1px,transparent 1px 46px),
    linear-gradient(180deg,rgba(46,230,168,.08),transparent 70%);
  mask-image:linear-gradient(90deg,transparent,#000 40%,#000);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 40%,#000);
  opacity:.7;
}
.hero-inner{position:relative;z-index:2;max-width:820px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  font-size:12.5px;letter-spacing:.06em;
  color:var(--primary);
  background:rgba(46,230,168,.1);
  border:1px solid rgba(46,230,168,.32);
  border-radius:var(--radius-pill);
}
.page-hero h1{
  margin-top:20px;
  font-size:clamp(34px,4.6vw,58px);
  font-weight:800;
  line-height:1.1;
  letter-spacing:-.02em;
  color:var(--text-on-dark);
}
.hero-sub{
  margin-top:18px;
  max-width:660px;
  font-size:clamp(15px,1.5vw,17px);
  line-height:1.8;
  color:var(--text-on-dark-muted);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-facts{
  display:flex;flex-wrap:wrap;
  margin-top:36px;
  border-top:1px solid rgba(255,255,255,.12);
  padding-top:22px;
  row-gap:14px;
}
.hero-facts li{
  display:flex;flex-direction:column;gap:4px;
  padding-right:clamp(18px,3vw,40px);
  margin-right:clamp(18px,3vw,40px);
  border-right:1px solid rgba(255,255,255,.12);
}
.hero-facts li:last-child{border-right:0;margin-right:0;padding-right:0;}
.fact-k{font-size:12.5px;letter-spacing:.08em;color:var(--text-on-dark-muted);}
.fact-v{font-size:15px;font-weight:600;color:var(--text-on-dark);font-variant-numeric:tabular-nums;}

/* ============ 主体布局 ============ */
.page-main{padding:clamp(40px,6vw,72px) 0 clamp(56px,7vw,96px);}
.doc-layout{row-gap:0;}

.doc-aside{position:relative;}
.doc-toc{
  position:sticky;
  top:96px;
  padding:24px 22px;
  background:var(--card);
  border:1px solid var(--line-light);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-card);
}
.toc-title{
  font-size:12.5px;font-weight:600;letter-spacing:.1em;
  color:var(--text-muted);
  padding-bottom:12px;
  margin-bottom:8px;
  border-bottom:1px solid var(--line-light);
}
.toc-link{
  display:block;
  position:relative;
  padding:9px 10px 9px 14px;
  font-size:14.5px;
  color:var(--text-muted);
  border-radius:var(--radius-sm);
  border-left:2px solid transparent;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.toc-link:hover{color:var(--text-strong);background:#F3F2ED;}
.toc-link:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.toc-link.is-current{
  color:var(--text-strong);
  font-weight:600;
  background:var(--primary-soft);
  border-left-color:var(--primary);
}
.toc-note{
  position:sticky;
  top:calc(96px + 380px);
  margin-top:18px;
  padding:18px 20px;
  border-radius:var(--radius-md);
  border:1px dashed var(--line-light);
  background:#FBFBF8;
  font-size:13.5px;
  line-height:1.75;
  color:var(--text-muted);
}
.toc-note strong{display:block;color:var(--text-strong);font-size:14px;margin-bottom:6px;}

.doc-body{padding-left:clamp(0px,3vw,56px);}

.doc-section{
  scroll-margin-top:96px;
  padding-top:clamp(30px,3.6vw,46px);
  margin-top:clamp(30px,3.6vw,46px);
  border-top:1px solid var(--line-light);
}
.doc-section:first-child{padding-top:0;margin-top:0;border-top:0;}
.eyebrow{
  display:inline-block;
  font-size:12.5px;font-weight:600;letter-spacing:.12em;
  color:var(--secondary);
  margin-bottom:12px;
}
.doc-h2{
  font-size:clamp(24px,2.8vw,34px);
  font-weight:700;
  line-height:1.28;
  letter-spacing:-.01em;
  color:var(--text-strong);
}
.doc-p{
  margin-top:16px;
  font-size:16.5px;
  line-height:1.85;
  color:var(--text-muted);
}
.doc-p strong{color:var(--text-strong);font-weight:600;}

.doc-list{margin-top:24px;display:grid;gap:14px;}
.doc-list li{
  position:relative;
  padding:16px 20px 16px 46px;
  background:var(--card);
  border:1px solid var(--line-light);
  border-radius:var(--radius-md);
  line-height:1.75;
  color:var(--text-muted);
  transition:border-color .24s ease,transform .24s ease;
}
.doc-list li:hover{border-color:rgba(46,230,168,.5);transform:translateY(-2px);}
.doc-list li::before{
  content:"";
  position:absolute;
  left:20px;top:22px;
  width:10px;height:10px;
  border-radius:3px;
  background:var(--primary);
  box-shadow:0 0 0 4px rgba(46,230,168,.14);
}
.doc-list b{display:block;color:var(--text-strong);font-weight:600;font-size:16px;margin-bottom:2px;}

.figure{
  margin-top:26px;
  border:1px solid var(--line-light);
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:var(--card);
  box-shadow:var(--shadow-card);
}
.figure-media{overflow:hidden;}
.figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease;}
.figure:hover img{transform:scale(1.03);}
.figcap{
  padding:14px 20px;
  font-size:13px;
  color:var(--text-muted);
  border-top:1px solid var(--line-light);
  background:#FBFBF8;
}

/* 步骤 */
.step-list{margin-top:26px;display:grid;gap:0;}
.step-item{
  display:grid;
  grid-template-columns:64px 1fr;
  gap:18px;
  padding:22px 0;
  border-bottom:1px solid var(--line-light);
}
.step-item:last-child{border-bottom:0;padding-bottom:0;}
.step-num{
  font-family:var(--font-mono);
  font-size:26px;
  font-weight:700;
  line-height:1.1;
  color:transparent;
  -webkit-text-stroke:1.4px rgba(20,22,27,.32);
  letter-spacing:.02em;
}
.step-title{font-size:18px;font-weight:600;color:var(--text-strong);}
.step-text{margin-top:6px;font-size:15.5px;line-height:1.8;color:var(--text-muted);}

/* 小卡网格 */
.mini-grid{margin-top:26px;display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.mini-card{
  padding:22px;
  background:var(--card);
  border:1px solid var(--line-light);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-card);
  transition:border-color .24s ease,transform .24s ease;
}
.mini-card:hover{border-color:rgba(46,230,168,.5);transform:translateY(-2px);}
.mini-icon{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:var(--primary-soft);
  color:#12996C;
  font-size:16px;
  margin-bottom:14px;
}
.mini-card h3{font-size:17px;font-weight:600;color:var(--text-strong);}
.mini-card p{margin-top:8px;font-size:14.5px;line-height:1.75;color:var(--text-muted);}

/* 自查清单 */
.check-list{margin-top:24px;display:grid;gap:12px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 18px;
  background:var(--card);
  border:1px solid var(--line-light);
  border-radius:var(--radius-md);
  font-size:15.5px;
  line-height:1.75;
  color:var(--text-muted);
}
.check-list i{color:#12996C;font-size:14px;margin-top:6px;flex:none;}

/* FAQ */
.faq-accordion{margin-top:22px;}
.faq-accordion .accordion-item{
  background:transparent;
  border:0;
  border-top:1px solid var(--line-light);
  border-radius:0;
}
.faq-accordion .accordion-item:last-child{border-bottom:1px solid var(--line-light);}
.faq-accordion .accordion-button{
  background:transparent;
  box-shadow:none;
  padding:20px 0;
  font-size:17.5px;
  font-weight:600;
  line-height:1.5;
  color:var(--text-strong);
  border-radius:0;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--text-strong);background:transparent;box-shadow:none;}
.faq-accordion .accordion-button:focus{box-shadow:none;}
.faq-accordion .accordion-button:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.faq-accordion .accordion-button::after{
  width:1.1rem;height:1.1rem;background-size:1.1rem;
  transition:transform .26s ease;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 2.5v11M2.5 8h11' stroke='%2314161B' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 2.5v11M2.5 8h11' stroke='%2312996C' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
}
.faq-accordion .accordion-body{
  padding:0 0 22px 18px;
  border-left:3px solid var(--primary);
  margin-left:2px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--text-muted);
}
.accordion-collapse{transition:height .26s ease;}

/* CTA 条带 */
.cta-band{
  background:var(--ink-900);
  color:var(--text-on-dark);
  padding:clamp(48px,6vw,84px) 0;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background:radial-gradient(circle at 78% 20%,rgba(46,230,168,.16),transparent 55%);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  max-width:720px;
  margin:0 auto;
  text-align:center;
}
.cta-inner .eyebrow{color:var(--primary);}
.cta-inner h2{
  font-size:clamp(24px,3vw,36px);
  font-weight:700;
  line-height:1.25;
  color:var(--text-on-dark);
}
.cta-inner p{
  margin-top:14px;
  font-size:15.5px;
  line-height:1.8;
  color:var(--text-on-dark-muted);
}
.cta-actions{
  display:flex;flex-wrap:wrap;justify-content:center;gap:14px;
  margin-top:28px;
}

/* 页脚 */
.site-footer{
  background:var(--ink-900);
  color:var(--text-on-dark);
  padding:clamp(48px,6vw,76px) 0 0;
  border-top:1px solid rgba(255,255,255,.08);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:clamp(24px,3.4vw,48px);
  padding-bottom:clamp(32px,4vw,52px);
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:340px;}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--text-on-dark);
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:var(--primary);}
.footer-col a:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.footer-col p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.66);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  padding:20px 0 26px;
  border-top:1px solid rgba(255,255,255,.12);
}
.footer-bottom small{font-size:12px;color:rgba(255,255,255,.5);font-variant-numeric:tabular-nums;}
.footer-legal{max-width:640px;}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .48s cubic-bezier(.22,.8,.28,1),transform .48s cubic-bezier(.22,.8,.28,1);}
.reveal.is-in{opacity:1;transform:none;}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  .btn-aurora:hover,.btn-ghost:hover,.doc-list li:hover,.mini-card:hover,.figure:hover img{transform:none;}
  *{animation:none !important;transition-duration:.01ms !important;}
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .doc-body{padding-left:24px;}
}

@media (max-width:991.98px){
  .nav-wrap{height:60px;}
  .page-hero{padding-top:calc(60px + 48px);}
  .hero-lines{width:60%;opacity:.4;}
  .doc-body{padding-left:0;margin-top:26px;}
  .doc-aside{position:static;}
  .doc-toc{
    position:static;
    padding:14px;
    border-radius:var(--radius-md);
  }
  .toc-title{display:none;}
  .doc-toc ul{
    display:flex;
    gap:8px;
    overflow-x:auto;
    padding-bottom:4px;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:none;
  }
  .doc-toc ul::-webkit-scrollbar{display:none;}
  .doc-toc li{flex:0 0 auto;}
  .toc-link{
    white-space:nowrap;
    padding:8px 14px;
    border:1px solid var(--line-light);
    border-radius:var(--radius-pill);
    font-size:13.5px;
    background:#FBFBF8;
  }
  .toc-link.is-current{
    border-color:rgba(46,230,168,.7);
    border-left-color:rgba(46,230,168,.7);
    background:var(--primary-soft);
  }
  .toc-note{position:static;margin-top:14px;top:auto;}
  .mini-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}

@media (max-width:767.98px){
  .container{padding-left:18px;padding-right:18px;}
  body{font-size:16px;}
  .hero-facts li{
    width:50%;
    border-right:0;
    margin-right:0;
    padding-right:12px;
  }
  .hero-facts li:nth-child(odd){border-right:1px solid rgba(255,255,255,.12);}
  .mini-grid{grid-template-columns:1fr;}
  .step-item{grid-template-columns:48px 1fr;gap:14px;}
  .step-num{font-size:22px;}
  .hero-actions .btn-aurora,.hero-actions .btn-ghost{flex:1 1 auto;padding:13px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-actions .btn-aurora,.cta-actions .btn-ghost{flex:1 1 100%;}
}

@media (max-width:519.98px){
  .page-hero h1{font-size:30px;}
  .doc-h2{font-size:23px;}
  .faq-accordion .accordion-button{font-size:16px;}
  .doc-list li{padding:14px 16px 14px 40px;}
  .doc-list li::before{left:16px;top:20px;}
}

/* roulang page: category2 */
:root{
  --ink-900:#0B0D12;
  --ink-800:#14171F;
  --ink-700:#1D212B;
  --paper:#F7F6F2;
  --card:#FFFFFF;
  --primary:#2EE6A8;
  --secondary:#7B6BF2;
  --accent-warm:#FFC46B;
  --text-strong:#14161B;
  --text-muted:#5A6070;
  --text-on-dark:#F2F3F5;
  --text-on-dark-muted:#A7ADBB;
  --line-light:#E6E4DE;
  --line-dark:rgba(255,255,255,.12);
  --danger:#D4573F;
  --link:#0E8C68;
  --radius-s:8px;
  --radius-m:14px;
  --radius-l:24px;
  --shadow-card:0 12px 32px -18px rgba(20,22,27,.18);
  --shadow-dark:0 24px 60px -32px rgba(0,0,0,.6);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"DIN Alternate","Roboto Mono",Menlo,monospace;
  --gutter:24px;
  --bs-primary:#2EE6A8;
  --bs-body-color:#14161B;
  --bs-body-bg:#F7F6F2;
  --bs-border-radius:14px;
  --bs-font-sans-serif:var(--font-sans);
  --bs-body-font-family:var(--font-sans);
  --bs-link-color:#0E8C68;
  --bs-link-hover-color:#0B7557;
}
*,*::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:16.5px;
  line-height:1.8;
  color:var(--text-strong);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--link);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--primary);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.2;color:var(--text-strong);}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter);}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1030;
  background:rgba(11,13,18,.35);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.10);
  box-shadow:0 10px 30px -22px rgba(0,0,0,.7);
  transition:background .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.is-scrolled{
  background:rgba(11,13,18,.94);
  border-bottom-color:rgba(255,255,255,.14);
  box-shadow:0 14px 34px -18px rgba(0,0,0,.85);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:18px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-on-dark);}
.brand:hover{color:var(--text-on-dark);}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(150deg,var(--primary),#18b98a 60%,var(--secondary));
  color:#0B0D12;font-weight:800;font-size:16px;
  box-shadow:0 8px 20px -12px rgba(46,230,168,.9);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-main{font-size:15px;font-weight:700;letter-spacing:.01em;}
.brand-sub{font-size:11px;letter-spacing:.12em;color:var(--text-on-dark-muted);margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--text-on-dark);
  padding:6px 0;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease;
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:#fff;}
.nav-right{display:flex;align-items:center;gap:14px;}
.nav-search{
  width:38px;height:38px;display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.18);border-radius:10px;
  color:var(--text-on-dark);font-size:14px;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.nav-search:hover{color:var(--primary);border-color:rgba(46,230,168,.6);background:rgba(46,230,168,.08);}
.btn-aurora{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--primary);color:#0B0D12;
  border:1px solid var(--primary);
  border-radius:10px;
  padding:13px 26px;
  font-size:15px;font-weight:600;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease,background .2s ease;
  box-shadow:0 10px 24px -16px rgba(46,230,168,.9);
  cursor:pointer;
}
.btn-aurora:hover{color:#0B0D12;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 16px 30px -16px rgba(46,230,168,1);}
.btn-aurora:active{transform:translateY(0);box-shadow:0 6px 16px -14px rgba(46,230,168,.9);}
.btn-aurora:disabled{opacity:.45;cursor:not-allowed;transform:none;filter:none;}
.btn-nav{padding:9px 18px;font-size:14px;border-radius:10px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--text-on-dark);
  border:1px solid rgba(255,255,255,.28);
  border-radius:10px;padding:13px 26px;font-size:15px;font-weight:600;
  transition:border-color .2s ease,background .2s ease,transform .2s ease,color .2s ease;
  cursor:pointer;
}
.btn-ghost:hover{border-color:rgba(46,230,168,.7);background:rgba(46,230,168,.10);color:#fff;transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-dark-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--text-strong);
  border:1px solid var(--line-light);border-radius:10px;
  padding:12px 24px;font-size:15px;font-weight:600;
  transition:border-color .2s ease,color .2s ease,background .2s ease,transform .2s ease;
}
.btn-dark-ghost:hover{border-color:var(--primary);color:#0B7557;background:rgba(46,230,168,.08);transform:translateY(-1px);}
.nav-toggle{
  width:44px;height:44px;display:grid;place-items:center;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);border-radius:10px;
  color:var(--text-on-dark);font-size:17px;
}
.nav-collapse{background:rgba(11,13,18,.98);border-top:1px solid var(--line-dark);padding:8px 24px 20px;}
.nav-collapse .nav-link{display:block;padding:14px 0;font-size:16px;border-bottom:1px solid rgba(255,255,255,.07);}
.nav-collapse .nav-link::after{display:none;}
.nav-collapse .btn-aurora{margin-top:18px;width:100%;}

/* ---------- 通用组件 ---------- */
.tag-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  font-size:12.5px;letter-spacing:.04em;font-weight:600;
  background:rgba(46,230,168,.14);color:var(--primary);
  border:1px solid rgba(46,230,168,.28);
}
.tag-plain{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;font-size:12px;letter-spacing:.04em;
  background:rgba(123,107,242,.10);color:#4B3FC7;border:1px solid rgba(123,107,242,.22);
}
.badge-level{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:rgba(255,196,107,.20);color:#7A4E05;
  border:1px solid rgba(255,196,107,.55);
  font-size:12px;font-weight:700;letter-spacing:.04em;
}
.badge-state{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  background:rgba(46,230,168,.16);color:#0B7557;
  border:1px solid rgba(46,230,168,.42);
  font-size:12px;font-weight:600;letter-spacing:.04em;
}
.section{padding:clamp(64px,9vw,120px) 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:clamp(26px,3.2vw,40px);margin-bottom:16px;}
.section-head p{color:var(--text-muted);font-size:16.5px;}
.eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.14em;
  color:var(--link);font-weight:700;margin-bottom:14px;
}
.divider{height:1px;background:var(--line-light);border:0;margin:0;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  padding:calc(72px + 56px) 0 64px;
  min-height:clamp(280px,36vw,420px);
  display:flex;align-items:center;
}
.page-hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.55;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(11,13,18,.97) 12%,rgba(11,13,18,.82) 52%,rgba(11,13,18,.55) 100%);
}
.page-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-on-dark-muted);margin-bottom:20px;}
.crumbs a{color:var(--text-on-dark-muted);}
.crumbs a:hover{color:var(--primary);}
.crumbs span.sep{color:rgba(255,255,255,.3);}
.crumbs .current{color:var(--text-on-dark);}
.page-hero h1{
  color:#fff;
  font-size:clamp(32px,4.4vw,54px);
  font-weight:800;line-height:1.1;letter-spacing:-.02em;
  margin:18px 0 18px;
}
.page-hero .lead{color:var(--text-on-dark-muted);font-size:17px;max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-metrics{
  display:flex;flex-wrap:wrap;gap:0;margin-top:36px;
  border-top:1px solid rgba(255,255,255,.12);padding-top:22px;
}
.hero-metrics .metric{padding-right:28px;margin-right:28px;border-right:1px solid rgba(255,255,255,.12);}
.hero-metrics .metric:last-child{border-right:0;margin-right:0;padding-right:0;}
.hero-metrics .metric strong{
  display:block;font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:26px;font-weight:700;color:#fff;line-height:1.2;
}
.hero-metrics .metric span{font-size:13px;color:var(--text-on-dark-muted);letter-spacing:.04em;}
.hero-figure{
  border-radius:var(--radius-l);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  box-shadow:var(--shadow-dark);
  margin:0;
  background:var(--ink-800);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}

/* ---------- 引导段 ---------- */
.intro-band{padding:clamp(56px,7vw,88px) 0 0;}
.intro-grid{
  display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(24px,4vw,56px);align-items:start;
}
.intro-grid h2{font-size:clamp(24px,2.9vw,36px);margin-bottom:18px;}
.intro-grid p{color:var(--text-muted);}
.intro-note{
  background:var(--card);border:1px solid var(--line-light);border-radius:var(--radius-m);
  padding:24px 26px;box-shadow:var(--shadow-card);
}
.intro-note h3{font-size:16px;margin-bottom:12px;}
.intro-note ul li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--text-muted);padding:9px 0;
  border-bottom:1px dashed var(--line-light);
}
.intro-note ul li:last-child{border-bottom:0;padding-bottom:0;}
.intro-note ul li i{color:var(--primary);margin-top:6px;font-size:12px;}

/* ---------- 阶梯时间轴 ---------- */
.ladder-wrap{background:var(--paper);}
.ladder{position:relative;margin-top:8px;}
.ladder::before{
  content:"";position:absolute;left:23px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,var(--primary) 0%,rgba(46,230,168,.55) 45%,rgba(46,230,168,.14) 100%);
  border-radius:2px;
}
.step{position:relative;padding-left:76px;margin-bottom:26px;}
.step:last-child{margin-bottom:0;}
.step-dot{
  position:absolute;left:0;top:4px;
  width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--ink-900);color:var(--primary);
  font-family:var(--font-mono);font-size:14px;font-weight:700;
  border:2px solid rgba(46,230,168,.42);
  box-shadow:0 0 0 6px rgba(247,246,242,1),0 10px 24px -16px rgba(11,13,18,.7);
}
.step-card{
  background:var(--card);
  border:1px solid var(--line-light);
  border-radius:var(--radius-m);
  padding:24px 28px;
  box-shadow:var(--shadow-card);
  transition:border-color .3s ease,transform .3s ease,box-shadow .3s ease;
}
.step-card:hover{border-color:rgba(46,230,168,.5);transform:translateY(-2px);box-shadow:0 18px 40px -24px rgba(20,22,27,.32);}
.step-top{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:12px;}
.step-top h3{font-size:19px;font-weight:600;}
.step-card p{color:var(--text-muted);font-size:15.5px;}
.step-metrics{
  display:grid;grid-template-columns:repeat(3,1fr);gap:12px;
  margin-top:20px;padding-top:18px;border-top:1px solid var(--line-light);
}
.step-metrics .m{min-width:0;}
.step-metrics .m strong{
  display:block;font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:20px;font-weight:700;color:var(--text-strong);line-height:1.3;
}
.step-metrics .m span{font-size:12.5px;color:var(--text-muted);letter-spacing:.03em;}
.step-metrics .m.accent strong{color:#8A5806;}

/* ---------- 要点说明 ---------- */
.points{background:#fff;border-top:1px solid var(--line-light);border-bottom:1px solid var(--line-light);}
.points-grid{
  display:grid;grid-template-columns:1fr 1fr;
  gap:clamp(28px,4.4vw,64px);align-items:center;
}
.points-figure{margin:0;border-radius:var(--radius-l);overflow:hidden;border:1px solid var(--line-light);box-shadow:var(--shadow-card);}
.points-figure img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.data-list{display:grid;gap:14px;margin-top:26px;}
.data-item{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--paper);border:1px solid var(--line-light);
  border-radius:var(--radius-m);padding:18px 20px;
  transition:border-color .26s ease,transform .26s ease;
}
.data-item:hover{border-color:rgba(46,230,168,.5);transform:translateY(-2px);}
.data-item .icon{
  flex:0 0 38px;width:38px;height:38px;border-radius:10px;
  display:grid;place-items:center;
  background:rgba(123,107,242,.10);color:#4B3FC7;font-size:15px;
}
.data-item h3{font-size:16px;margin-bottom:6px;}
.data-item p{font-size:14.5px;color:var(--text-muted);}

/* ---------- 核对清单 ---------- */
.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:8px;}
.check-card{
  background:var(--card);border:1px solid var(--line-light);
  border-radius:var(--radius-m);padding:26px 28px;box-shadow:var(--shadow-card);
}
.check-card h3{font-size:17px;display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.check-card h3 i{color:var(--primary);}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--text-muted);
  padding:10px 0;border-bottom:1px solid var(--line-light);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.check-list li .dot{
  flex:0 0 18px;width:18px;height:18px;border-radius:6px;
  border:1.5px solid rgba(46,230,168,.7);margin-top:5px;
  display:grid;place-items:center;color:#0B7557;font-size:10px;
}

/* ---------- FAQ ---------- */
.faq-wrap{background:var(--paper);}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line-light);}
.accordion-item:first-child{border-top:1px solid var(--line-light);}
.accordion-button{
  background:transparent;color:var(--text-strong);
  font-size:18px;font-weight:600;
  padding:20px 0;box-shadow:none;line-height:1.5;
}
.accordion-button:not(.collapsed){background:transparent;color:var(--text-strong);box-shadow:none;}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--primary);outline-offset:2px;}
.accordion-button::after{
  content:"+";background-image:none;font-size:22px;font-weight:400;line-height:1;
  width:auto;height:auto;display:grid;place-items:center;
  transform:none;transition:transform .26s ease;color:var(--link);
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:#0B7557;}
.accordion-body{
  padding:0 0 22px 18px;
  border-left:3px solid var(--primary);
  color:var(--text-muted);font-size:15.5px;
}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--ink-900);padding:clamp(56px,7vw,88px) 0;position:relative;overflow:hidden;}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(ellipse at 18% 10%,rgba(46,230,168,.16),transparent 55%),
             radial-gradient(ellipse at 85% 90%,rgba(123,107,242,.16),transparent 55%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;max-width:680px;margin:0 auto;text-align:center;}
.cta-inner h2{color:#fff;font-size:clamp(24px,3vw,36px);margin-bottom:14px;}
.cta-inner p{color:var(--text-on-dark-muted);margin-bottom:28px;font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:var(--text-on-dark-muted);padding:clamp(48px,7vw,80px) 0 28px;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px;
  padding-bottom:38px;border-bottom:1px solid var(--line-dark);
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-on-dark-muted);line-height:1.85;max-width:330px;}
.footer-col h4{font-size:14px;letter-spacing:.08em;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col ul li a:hover{color:var(--primary);}
.footer-col p{font-size:14px;color:var(--text-on-dark-muted);line-height:1.85;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  padding-top:22px;
}
.footer-bottom small{font-size:12.5px;color:rgba(255,255,255,.5);}
.footer-legal{max-width:620px;}

/* ---------- 动效 ---------- */
.js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .48s cubic-bezier(.22,.8,.28,1),transform .48s cubic-bezier(.22,.8,.28,1);}
.js [data-reveal].is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .js [data-reveal]{opacity:1;transform:none;transition:none;}
  *{animation:none!important;transition:none!important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-links{gap:20px;}
}
@media (max-width:991px){
  .nav-wrap{height:64px;}
  .page-hero{padding-top:calc(64px + 44px);}
  .intro-grid{grid-template-columns:1fr;}
  .points-grid{grid-template-columns:1fr;}
  .points-figure{order:-1;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .hero-metrics .metric{padding-right:22px;margin-right:22px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  :root{--gutter:18px;}
  .page-hero{padding-top:calc(60px + 34px);padding-bottom:44px;min-height:0;}
  .page-hero h1{font-size:clamp(27px,7.6vw,36px);}
  .page-hero .lead{font-size:15.5px;}
  .hero-actions .btn-aurora,.hero-actions .btn-ghost{flex:1 1 100%;}
  .hero-metrics{gap:16px 0;}
  .hero-metrics .metric{padding-right:18px;margin-right:18px;}
  .hero-metrics .metric strong{font-size:21px;}
  .step{padding-left:56px;}
  .step-dot{width:38px;height:38px;font-size:12px;top:6px;}
  .ladder::before{left:18px;}
  .step-card{padding:20px 18px;}
  .step-metrics{grid-template-columns:1fr 1fr;gap:14px;}
  .check-grid{grid-template-columns:1fr;}
  .check-card{padding:22px 18px;}
  .accordion-button{font-size:16px;padding:18px 0;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .cta-actions .btn-aurora,.cta-actions .btn-ghost{width:100%;}
}
@media (max-width:519px){
  .brand-main{font-size:14px;}
  .step-metrics{grid-template-columns:1fr;}
  .data-item{flex-direction:column;gap:10px;}
}

/* roulang page: category3 */
:root{
  --ink-900:#0B0D12;
  --ink-800:#14171F;
  --ink-700:#1D212B;
  --paper:#F7F6F2;
  --card:#FFFFFF;
  --primary:#2EE6A8;
  --secondary:#7B6BF2;
  --accent-warm:#FFC46B;
  --text-strong:#14161B;
  --text-muted:#5A6070;
  --text-on-dark:#F2F3F5;
  --text-on-dark-muted:#A7ADBB;
  --line-light:#E6E4DE;
  --line-dark:rgba(255,255,255,.12);
  --danger:#D4573F;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-card:0 12px 32px -18px rgba(20,22,27,.18);
  --shadow-dark:0 24px 60px -32px rgba(0,0,0,.6);
  --ease:cubic-bezier(.22,.8,.28,1);
  --bs-primary:#2EE6A8;
  --bs-body-color:#14161B;
  --bs-body-bg:#F7F6F2;
  --bs-border-radius:14px;
  --bs-link-color:#14161B;
  --bs-link-hover-color:#1BA97A;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  background:var(--paper);
  color:var(--text-strong);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .24s var(--ease);}
a:hover{color:#1BA97A;}
img{max-width:100%;display:block;}
button{font-family:inherit;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (max-width:767px){
  .container{padding-left:18px;padding-right:18px;}
}
::selection{background:rgba(46,230,168,.28);color:var(--text-strong);}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1030;
  background:rgba(11,13,18,.35);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.10);
  box-shadow:0 10px 30px -24px rgba(0,0,0,.85);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(11,13,18,.94);
  box-shadow:0 16px 44px -28px rgba(0,0,0,.95);
}
.nav-wrap{
  height:72px;
  display:flex;
  align-items:center;
  gap:20px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:rgba(46,230,168,.14);
  border:1px solid rgba(46,230,168,.45);
  color:var(--primary);
  font-weight:800;
  font-size:16px;
  line-height:1;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:15px;font-weight:700;color:var(--text-on-dark);letter-spacing:.01em;}
.brand-sub{font-size:11px;letter-spacing:.12em;color:var(--text-on-dark-muted);margin-top:2px;}
.nav-links{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  color:var(--text-on-dark);
  font-size:15px;
  padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:100%;
  bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transition:right .26s var(--ease);
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{right:0;}
.nav-link.is-active{color:#fff;}
.nav-link.is-active::after{right:0;}
.nav-right{
  display:flex;
  align-items:center;
  gap:14px;
  margin-left:32px;
}
.nav-search{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.18);
  color:var(--text-on-dark);
  font-size:14px;
  transition:border-color .24s var(--ease),color .24s var(--ease),background .24s var(--ease);
}
.nav-search:hover,.nav-search:focus-visible{
  border-color:var(--primary);
  color:var(--primary);
  background:rgba(46,230,168,.10);
}
.btn-aurora{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:var(--primary);
  color:#0B0D12;
  border:1px solid var(--primary);
  border-radius:10px;
  padding:14px 26px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease),background .2s var(--ease);
}
.btn-aurora:hover{
  color:#0B0D12;
  transform:translateY(-1px);
  filter:brightness(1.06);
  box-shadow:0 14px 28px -18px rgba(46,230,168,.85);
}
.btn-aurora:active{transform:translateY(0);box-shadow:none;}
.btn-aurora:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-nav{height:38px;padding:0 18px;font-size:14px;}
.nav-toggle{
  margin-left:auto;
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;
  border:1px solid rgba(255,255,255,.18);
  border-radius:10px;
  color:var(--text-on-dark);
  font-size:16px;
  cursor:pointer;
  transition:border-color .24s var(--ease),color .24s var(--ease);
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary);}
.nav-collapse{
  background:rgba(11,13,18,.97);
  border-top:1px solid var(--line-dark);
  padding:8px 18px 22px;
}
.nav-collapse .nav-link{
  display:block;
  padding:14px 0;
  border-bottom:1px solid var(--line-dark);
  font-size:16px;
}
.nav-collapse .nav-link::after{display:none;}
.nav-collapse .btn-aurora{display:inline-flex;margin-top:18px;width:100%;}
@media (max-width:991px){
  .nav-wrap{height:60px;}
  .brand-mark{width:30px;height:30px;font-size:14px;}
  .brand-main{font-size:14px;}
}

/* ---------- 通用区块 ---------- */
.section{padding:clamp(64px,9vw,120px) 0;}
.section-tight{padding:clamp(48px,6vw,80px) 0;}
.section-head{margin-bottom:clamp(28px,4vw,44px);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.08em;
  color:#1BA97A;
  font-weight:600;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:18px;height:2px;border-radius:2px;
  background:var(--primary);
}
.h2{
  font-size:clamp(26px,3.2vw,40px);
  font-weight:700;
  line-height:1.2;
  letter-spacing:-.01em;
  color:var(--text-strong);
}
.section-sub{
  margin-top:16px;
  font-size:16px;
  line-height:1.8;
  color:var(--text-muted);
  max-width:660px;
}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--text-strong);
}
.link-arrow i{font-size:12px;transition:transform .24s var(--ease);}
.link-arrow:hover{color:#1BA97A;}
.link-arrow:hover i{transform:translateX(3px);}
.divider{height:1px;background:var(--line-light);border:0;margin:0;}

/* ---------- 首屏 ---------- */
.cat-hero{
  position:relative;
  padding-top:72px;
  background:var(--ink-900);
  color:var(--text-on-dark);
  overflow:hidden;
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(180deg,rgba(11,13,18,.56) 0%,rgba(11,13,18,.90) 68%,rgba(11,13,18,.97) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  z-index:0;
}
.cat-hero > .container{position:relative;z-index:1;}
.hero-inner{
  min-height:clamp(340px,40vw,460px);
  display:flex;
  align-items:center;
  padding:clamp(40px,6vw,72px) 0;
}
.breadcrumb-bar{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-on-dark-muted);
  margin-bottom:20px;
}
.breadcrumb-bar a{color:var(--text-on-dark-muted);}
.breadcrumb-bar a:hover{color:var(--primary);}
.breadcrumb-bar .sep{opacity:.55;}
.breadcrumb-bar .current{color:var(--text-on-dark);}
.pill-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 16px;
  border-radius:var(--r-pill);
  background:rgba(46,230,168,.12);
  border:1px solid rgba(46,230,168,.34);
  color:var(--primary);
  font-size:13px;
  letter-spacing:.04em;
  margin-bottom:20px;
}
.hero-title{
  font-size:clamp(30px,4.2vw,54px);
  font-weight:800;
  line-height:1.14;
  letter-spacing:-.02em;
  color:#fff;
  max-width:680px;
}
.hero-title .hl{color:var(--primary);}
.hero-desc{
  margin-top:20px;
  font-size:clamp(15px,1.6vw,17px);
  line-height:1.8;
  color:var(--text-on-dark-muted);
  max-width:600px;
}
.btn-row{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:32px;
}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:transparent;
  color:var(--text-on-dark);
  border:1px solid rgba(255,255,255,.28);
  border-radius:10px;
  padding:14px 26px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:border-color .24s var(--ease),color .24s var(--ease),background .24s var(--ease),transform .2s var(--ease);
}
.btn-ghost:hover{
  color:var(--primary);
  border-color:var(--primary);
  background:rgba(46,230,168,.08);
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(0);}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  margin-top:40px;
}
.hero-stat{
  padding:0 28px;
  border-left:1px solid var(--line-dark);
}
.hero-stat:first-child{padding-left:0;border-left:0;}
.hero-stat .num{
  font-size:clamp(26px,3.2vw,38px);
  font-weight:700;
  line-height:1.1;
  color:#fff;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.hero-stat .num small{font-size:.5em;font-weight:600;color:var(--text-on-dark-muted);margin-left:2px;}
.hero-stat .lab{
  font-size:13px;
  color:var(--text-on-dark-muted);
  letter-spacing:.04em;
  margin-top:6px;
}
.hero-jump{
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  border-radius:var(--r-lg);
  padding:26px;
  box-shadow:var(--shadow-dark);
}
.hero-jump h2{
  font-size:15px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--text-on-dark-muted);
  margin-bottom:16px;
}
.hero-jump ul li + li{margin-top:2px;}
.hero-jump a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:13px 0;
  border-bottom:1px solid var(--line-dark);
  color:var(--text-on-dark);
  font-size:15px;
}
.hero-jump ul li:last-child a{border-bottom:0;}
.hero-jump a i{font-size:12px;color:var(--text-on-dark-muted);transition:transform .24s var(--ease),color .24s var(--ease);}
.hero-jump a:hover{color:var(--primary);}
.hero-jump a:hover i{transform:translateX(3px);color:var(--primary);}
@media (max-width:991px){
  .cat-hero{padding-top:60px;}
  .hero-inner{padding:44px 0 52px;}
  .hero-jump{margin-top:36px;}
}
@media (max-width:575px){
  .hero-stat{padding:0 18px;}
  .hero-stat .lab{font-size:12px;}
}

/* ---------- 图文对照 ---------- */
.compare-card{
  height:100%;
  background:var(--card);
  border:1px solid var(--line-light);
  border-radius:var(--r-md);
  padding:24px;
  box-shadow:var(--shadow-card);
  transition:border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
  display:flex;
  flex-direction:column;
}
.compare-card:hover{
  border-color:rgba(46,230,168,.5);
  transform:translateY(-2px);
  box-shadow:0 20px 40px -24px rgba(20,22,27,.28);
}
.compare-media{
  border-radius:12px;
  overflow:hidden;
  aspect-ratio:16/9;
  background:var(--ink-800);
  margin-bottom:22px;
}
.compare-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s var(--ease);
}
.compare-card:hover .compare-media img{transform:scale(1.03);}
.compare-card h3{
  font-size:20px;
  font-weight:600;
  line-height:1.4;
  color:var(--text-strong);
  margin-bottom:12px;
}
.compare-card p{
  font-size:15px;
  line-height:1.8;
  color:var(--text-muted);
}
.check-list{margin-top:18px;}
.check-list li{
  position:relative;
  padding-left:22px;
  font-size:14px;
  line-height:1.8;
  color:var(--text-muted);
}
.check-list li + li{margin-top:6px;}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:.76em;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--primary);
}
.compare-card .link-arrow{margin-top:22px;padding-top:18px;border-top:1px solid var(--line-light);}

/* ---------- 自查清单 ---------- */
.check-card{
  height:100%;
  background:var(--card);
  border:1px solid var(--line-light);
  border-radius:var(--r-md);
  padding:26px;
  transition:border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
}
.check-card:hover{
  border-color:rgba(46,230,168,.5);
  transform:translateY(-2px);
  box-shadow:0 18px 36px -26px rgba(20,22,27,.3);
}
.check-icon{
  width:42px;height:42px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:rgba(46,230,168,.12);
  border:1px solid rgba(46,230,168,.3);
  color:#1BA97A;
  font-size:16px;
  margin-bottom:18px;
}
.check-card h3{
  font-size:17px;
  font-weight:600;
  color:var(--text-strong);
  margin-bottom:10px;
  line-height:1.4;
}
.check-card p{
  font-size:14px;
  line-height:1.8;
  color:var(--text-muted);
}
.check-card .meta{
  display:inline-block;
  margin-top:16px;
  font-size:12px;
  letter-spacing:.04em;
  color:#6C4BD6;
  background:rgba(123,107,242,.10);
  border-radius:var(--r-pill);
  padding:4px 12px;
}

/* ---------- FAQ ---------- */
.faq-group + .faq-group{margin-top:44px;}
.faq-group-title{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:18px;
  font-weight:600;
  color:var(--text-strong);
  margin-bottom:8px;
  line-height:1.4;
}
.faq-idx{
  font-size:13px;
  font-weight:700;
  color:#1BA97A;
  background:rgba(46,230,168,.12);
  border-radius:8px;
  padding:3px 9px;
  font-variant-numeric:tabular-nums;
  letter-spacing:.04em;
}
.sec-accordion .accordion-item{
  background:transparent;
  border:0;
  border-top:1px solid var(--line-light);
}
.sec-accordion .accordion-item:last-child{border-bottom:1px solid var(--line-light);}
.sec-accordion .accordion-header{margin:0;}
.sec-accordion .accordion-button{
  background:transparent;
  border:0;
  box-shadow:none;
  padding:20px 40px 20px 0;
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  color:var(--text-strong);
  text-align:left;
  transition:color .24s var(--ease);
}
.sec-accordion .accordion-button:hover{color:#1BA97A;}
.sec-accordion .accordion-button:focus,
.sec-accordion .accordion-button:focus-visible{
  box-shadow:none;
  outline:2px solid var(--primary);
  outline-offset:2px;
  border-radius:6px;
}
.sec-accordion .accordion-button::after{
  background-image:none;
  content:"";
  width:11px;height:11px;
  border-right:2px solid var(--text-muted);
  border-bottom:2px solid var(--text-muted);
  transform:rotate(45deg) translateY(-3px);
  transition:transform .26s var(--ease),border-color .24s var(--ease);
  flex-shrink:0;
}
.sec-accordion .accordion-button:not(.collapsed){
  color:var(--text-strong);
  background:transparent;
  box-shadow:none;
}
.sec-accordion .accordion-button:not(.collapsed)::after{
  transform:rotate(-135deg) translateY(-3px);
  border-color:#1BA97A;
}
.sec-accordion .accordion-collapse{border:0;}
.sec-accordion .accordion-body{
  padding:2px 0 24px 18px;
  border-left:3px solid var(--primary);
  font-size:15px;
  line-height:1.85;
  color:var(--text-muted);
  max-width:820px;
}
.sec-accordion .accordion-body strong{color:var(--text-strong);font-weight:600;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink-900);
  border-radius:var(--r-lg);
  padding:clamp(36px,6vw,64px) clamp(24px,5vw,56px);
  text-align:center;
  border:1px solid var(--ink-700);
  box-shadow:var(--shadow-dark);
}
.cta-band .cta-title{
  font-size:clamp(24px,3vw,34px);
  font-weight:700;
  line-height:1.25;
  color:#fff;
  letter-spacing:-.01em;
}
.cta-band .cta-sub{
  margin:16px auto 0;
  max-width:560px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-on-dark-muted);
}
.cta-band .btn-row{justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);
  color:var(--text-on-dark);
  padding:clamp(56px,7vw,88px) 0 32px;
  margin-top:clamp(48px,7vw,96px);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  line-height:1.8;
  color:var(--text-on-dark-muted);
  max-width:330px;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  letter-spacing:.08em;
  color:#fff;
  margin-bottom:16px;
}
.footer-col ul li a{
  display:inline-block;
  padding:5px 0;
  font-size:14px;
  color:rgba(255,255,255,.72);
}
.footer-col ul li a:hover{color:var(--primary);}
.footer-col p{
  font-size:14px;
  line-height:1.8;
  color:var(--text-on-dark-muted);
}
.footer-bottom{
  margin-top:48px;
  padding-top:20px;
  border-top:1px solid var(--line-dark);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
}
.footer-bottom small{
  font-size:12px;
  color:rgba(255,255,255,.5);
  line-height:1.7;
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{margin-top:32px;}
}

/* ---------- 动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .48s var(--ease),transform .48s var(--ease);
}
.reveal.is-in{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}