/* roulang page: index */
:root{
  --accent:#C6F24E;
  --accent-deep:#A6D22F;
  --ink:#101310;
  --ink-soft:#2B312A;
  --muted:#6C736A;
  --paper:#F4F4EF;
  --surface:#FFFFFF;
  --line:#E3E3DA;
  --line-strong:#C9CABF;
  --alert:#FF6A3D;
  --r-lg:24px;
  --r:20px;
  --r-sm:16px;
  --r-xs:12px;
  --ease:cubic-bezier(.22,1,.36,1);
  --sh-card:0 1px 2px rgba(16,19,16,.05);
  --sh-lift:0 18px 40px -24px rgba(16,19,16,.22);
  --font-sans:'PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --font-mono:'JetBrains Mono','DIN Alternate',ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
input,textarea{font:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:88px 0}}
.grid-tex{
  background-color:var(--ink);
  background-image:
    repeating-linear-gradient(0deg, rgba(255,255,255,.04) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.04) 0 1px, transparent 1px 28px);
}
.grid-tex-paper{
  background-image:
    repeating-linear-gradient(0deg, rgba(16,19,16,.035) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(90deg, rgba(16,19,16,.035) 0 1px, transparent 1px 28px);
}

/* ---------- 悬浮胶囊导航 ---------- */
.nav-wrap{
  position:fixed;
  top:16px;left:50%;
  transform:translateX(-50%);
  width:min(1200px,calc(100% - 32px));
  z-index:80;
}
.nav-capsule{
  display:flex;align-items:center;gap:18px;
  height:60px;padding:0 10px 0 18px;
  border-radius:9999px;
  background:rgba(244,244,239,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid rgba(16,19,16,.08);
  transition:height .3s var(--ease),background .3s var(--ease),box-shadow .3s var(--ease);
}
.nav-wrap.is-scrolled .nav-capsule{
  height:52px;
  background:rgba(244,244,239,.9);
  box-shadow:0 14px 34px -22px rgba(16,19,16,.45);
}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;min-height:44px}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--accent);
  display:flex;align-items:center;justify-content:center;
  flex:0 0 auto;
}
.logo-text{font-weight:800;letter-spacing:-.02em;font-size:1.0625rem;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:40px;padding:0 16px;border-radius:9999px;
  font-size:.9375rem;color:var(--ink-soft);
  transition:color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.nav-link::after{
  content:'';position:absolute;left:50%;bottom:2px;
  width:3px;height:3px;border-radius:50%;background:var(--accent-deep);
  transform:translateX(-50%) scale(0);
  transition:transform .2s var(--ease);
}
.nav-link:hover{transform:translateY(-1px);color:var(--ink)}
.nav-link:hover::after{transform:translateX(-50%) scale(1)}
.nav-link.is-active{background:rgba(198,242,78,.42);color:var(--ink);font-weight:600}
.nav-link.is-active::after{transform:translateX(-50%) scale(0)}
.nav-cta{flex:0 0 auto;margin-left:8px}
.nav-btn{height:44px;padding:0 20px;font-size:.9375rem}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:9999px;
  border:1px solid rgba(16,19,16,.12);
  align-items:center;justify-content:center;
  margin-left:auto;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease)}
.nav-toggle span+span{margin-top:4px}
.nav-wrap.is-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-wrap.is-open .nav-toggle span:nth-child(2){opacity:0}
.nav-wrap.is-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-panel{
  margin-top:8px;
  border-radius:24px;
  background:rgba(244,244,239,.97);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid rgba(16,19,16,.08);
  box-shadow:0 24px 48px -30px rgba(16,19,16,.5);
  overflow:hidden;
  max-height:0;
  transition:max-height .24s var(--ease),padding .24s var(--ease);
  padding:0 12px;
}
.nav-wrap.is-open .nav-panel{max-height:420px;padding:12px}
.nav-panel a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 16px;border-radius:16px;
  font-size:.9375rem;color:var(--ink-soft);
}
.nav-panel a+a{margin-top:4px}
.nav-panel a:hover,.nav-panel a.is-active{background:rgba(198,242,78,.35);color:var(--ink)}
.nav-panel .panel-btn{margin-top:10px;justify-content:center;background:var(--ink);color:var(--accent);font-weight:600}
@media(max-width:1023px){
  .nav-menu,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .logo-text{font-size:1rem}
}
@media(max-width:400px){
  .logo-text{font-size:.9375rem}
}

/* ---------- 通用组件 ---------- */
.ui-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:24px;
  box-shadow:var(--sh-card);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.ui-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lift);border-color:var(--line-strong)}
.ui-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:50px;padding:0 26px;
  border-radius:9999px;
  font-weight:600;font-size:1rem;
  border:1px solid transparent;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .18s var(--ease);
  cursor:pointer;
}
.ui-btn .arw{transition:transform .24s var(--ease)}
.ui-btn-primary{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.ui-btn-primary:hover{background:var(--ink);color:var(--accent);border-color:var(--ink)}
.ui-btn-primary:hover .arw{transform:translateX(4px)}
.ui-btn-primary:active{transform:scale(.98)}
.ui-btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.ui-btn-ghost:hover{border-color:var(--accent-deep);color:var(--accent-deep)}
.ui-btn-ghost:hover .arw{transform:translateX(4px)}
.ui-btn-ghost:active{transform:scale(.98)}
.ui-btn-onDark{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.ui-btn-onDark:hover{background:#fff;color:var(--ink);border-color:#fff}
.ui-btn-darkGhost{background:transparent;border-color:rgba(255,255,255,.22);color:#fff}
.ui-btn-darkGhost:hover{border-color:var(--accent);color:var(--accent)}
.ui-hairline{border-top:1px solid var(--line)}
.ui-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:9999px;
  font-size:.75rem;letter-spacing:.08em;line-height:1.7;
  white-space:nowrap;
}
.ui-badge-dark{background:var(--ink);color:#fff}
.ui-badge-line{background:#fff;border:1px solid var(--line);color:var(--ink)}
.ui-badge-alert{background:#fff;border:1px solid var(--alert);color:var(--alert)}
.ui-link{position:relative;display:inline-block;font-weight:600;padding-bottom:3px}
.ui-link::after{
  content:'';position:absolute;left:0;bottom:0;height:2px;width:52%;
  background:var(--accent);
  transition:width .28s var(--ease);
}
.ui-link:hover::after{width:100%}
.ui-row{
  border-top:1px solid var(--line);
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.ui-row:hover{border-top-color:var(--accent-deep);background:rgba(198,242,78,.08)}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:132px 0 0;
  overflow:hidden;
}
@media(min-width:1024px){.hero{padding:168px 0 0}}
.hero-inner{
  display:grid;gap:40px;
  grid-template-columns:1fr;
  align-items:center;
  padding-bottom:56px;
}
@media(min-width:1024px){
  .hero-inner{grid-template-columns:1.15fr .85fr;gap:56px;padding-bottom:72px}
}
.hero h1{
  font-size:clamp(2.375rem,5.4vw,4.5rem);
  line-height:1.04;
  font-weight:800;
  letter-spacing:-.02em;
  color:#fff;
  margin-top:20px;
}
.hero h1 em{
  font-style:normal;
  color:var(--accent);
}
.hero-sub{
  margin-top:20px;
  color:rgba(255,255,255,.8);
  font-size:1.0625rem;
  max-width:34ch;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--accent);
}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;animation:slowZoom 20s ease-in-out infinite alternate}
.hero-media::after{
  content:'';position:absolute;inset:auto 0 0 0;height:42%;
  background:linear-gradient(180deg,rgba(16,19,16,0) 0%,rgba(16,19,16,.78) 100%);
  pointer-events:none;
}
.hero-media figcaption{
  position:absolute;left:20px;bottom:16px;z-index:2;
  color:rgba(255,255,255,.86);font-size:.8125rem;letter-spacing:.02em;
}
.hero-status{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  padding:18px 0 26px;
  border-top:1px solid rgba(255,255,255,.12);
}
.status-track{
  position:relative;flex:1 1 180px;min-width:120px;height:4px;border-radius:9999px;
  background:rgba(255,255,255,.16);overflow:hidden;
}
.status-track i{
  display:block;height:100%;border-radius:9999px;background:var(--accent);
  width:0;animation:growLine 1.2s var(--ease) .3s forwards;
}
.status-num{color:rgba(255,255,255,.72);font-size:.8125rem;letter-spacing:.06em}

/* ---------- 数据带 ---------- */
.stat-band{
  display:grid;grid-template-columns:repeat(2,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
@media(min-width:768px){.stat-band{grid-template-columns:repeat(4,1fr)}}
.stat-cell{padding:28px 20px 28px 0;border-left:1px solid var(--line)}
.stat-cell:first-child{border-left:none}
@media(max-width:767px){
  .stat-cell{padding:22px 16px}
  .stat-cell:nth-child(odd){border-left:none}
  .stat-cell:nth-child(n+3){border-top:1px solid var(--line)}
}
.stat-cell .stat-label{font-size:.75rem;letter-spacing:.08em;color:var(--muted)}
.stat-cell .stat-num{
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(1.75rem,3.4vw,2.5rem);line-height:1.2;
  letter-spacing:-.02em;margin-top:8px;
}
.stat-cell p{font-size:.8125rem;color:var(--muted);margin-top:6px}

/* ---------- 编号流 ---------- */
.flow-list{border-bottom:1px solid var(--line)}
.flow-row{
  display:grid;grid-template-columns:56px 1fr 44px;
  align-items:center;gap:8px;
  padding:24px 4px;min-height:88px;
}
@media(min-width:768px){.flow-row{grid-template-columns:84px 1fr 56px;padding:28px 12px}}
.flow-num{
  font-family:var(--font-mono);font-size:1.25rem;font-weight:700;
  color:var(--line-strong);transition:color .24s var(--ease);
}
@media(min-width:768px){.flow-num{font-size:1.75rem}}
.flow-row:hover .flow-num{color:var(--accent-deep)}
.flow-body strong{display:block;font-size:1.0625rem;font-weight:600}
.flow-body em{font-style:normal;display:block;color:var(--muted);font-size:.9375rem;margin-top:4px;max-width:64ch}
.flow-arw{justify-self:end;color:var(--muted);transition:transform .24s var(--ease),color .24s var(--ease)}
.flow-row:hover .flow-arw{transform:translateX(6px);color:var(--accent-deep)}

/* ---------- 配图卡 ---------- */
.media-card img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-sm);
  background:#2B312A;
}
.card-meta{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:.8125rem;color:var(--muted);
  margin-top:16px;
}
.card-title{font-size:1.25rem;line-height:1.4;font-weight:600;margin-top:14px}
.card-desc{color:var(--muted);font-size:.9375rem;margin-top:10px}
.clamp2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- 步骤 ---------- */
.steps{
  display:grid;grid-template-columns:1fr;gap:28px;position:relative;
  padding-top:8px;
}
@media(min-width:768px){
  .steps{grid-template-columns:repeat(4,1fr);gap:24px}
  .steps::before{
    content:'';position:absolute;top:17px;left:12.5%;right:12.5%;height:1px;background:var(--line);
  }
}
.step{position:relative;text-align:left}
@media(min-width:768px){.step{text-align:center}}
.step-dot{
  width:18px;height:18px;border-radius:50%;
  background:var(--surface);border:2px solid var(--accent-deep);
  position:relative;z-index:1;
}
@media(min-width:768px){.step-dot{margin:0 auto}}
.step-dot.is-pulse{animation:pulseDot 2s ease-in-out infinite}
.step-title{display:block;font-size:1rem;font-weight:600;margin-top:16px}
.step p{color:var(--muted);font-size:.9375rem;margin-top:6px;max-width:30ch}
@media(min-width:768px){.step p{margin-left:auto;margin-right:auto}}
@media(max-width:767px){
  .steps::before{content:'';position:absolute;left:8px;top:8px;bottom:8px;width:1px;background:var(--line)}
  .step{padding-left:34px}
  .step-dot{position:absolute;left:0;top:4px}
}

/* ---------- 反馈 ---------- */
.quote{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:26px}
.quote p{font-size:1rem;color:var(--ink-soft)}
.quote .who{display:flex;align-items:center;gap:10px;margin-top:18px;font-size:.8125rem;color:var(--muted);font-family:var(--font-mono)}
.quote .who i{width:8px;height:8px;border-radius:50%;background:var(--accent-deep);display:block}

/* ---------- 最新信息 ---------- */
.feature-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-card);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
  display:flex;flex-direction:column;height:100%;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lift);border-color:var(--line-strong)}
.feature-card .thumb{position:relative}
.feature-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#2B312A}
.feature-card .thumb .ui-badge{position:absolute;left:16px;top:16px}
.feature-card .body{padding:24px;display:flex;flex-direction:column;flex:1}
.news-row{display:block;padding:20px 4px;min-height:64px}
.news-row .t{font-size:1rem;font-weight:600;line-height:1.6;transition:color .2s var(--ease)}
.news-row:hover .t{color:var(--accent-deep)}
.news-row .m{display:flex;gap:12px;font-family:var(--font-mono);font-size:.8125rem;color:var(--muted);margin-top:8px}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:56px 20px;border:1px dashed var(--line-strong);border-radius:var(--r);background:var(--surface);
  text-align:center;
}
.empty-state p{color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:18px 4px;text-align:left;
  font-size:1.0625rem;font-weight:600;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--accent-deep)}
.faq-icon{
  position:relative;flex:0 0 auto;width:22px;height:22px;
  transition:transform .2s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:'';position:absolute;left:50%;top:50%;background:var(--ink);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px;transition:opacity .2s var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a-inner{max-width:720px;padding:0 4px 24px;color:var(--muted);line-height:1.85}

/* ---------- CTA ---------- */
.cta-band{
  padding:64px 0;text-align:center;
}
@media(min-width:1024px){.cta-band{padding:88px 0}}
.cta-band h2{
  color:#fff;font-size:clamp(1.625rem,3.2vw,2.5rem);line-height:1.18;font-weight:800;letter-spacing:-.02em;
}
.cta-band p{color:rgba(255,255,255,.78);margin-top:16px}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:#fff;position:relative}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:32px;
  padding:56px 0 32px;
}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr);padding:72px 0 40px}}
.footer h4{font-size:.75rem;letter-spacing:.08em;color:rgba(255,255,255,.55);margin-bottom:16px}
.footer-links a{
  display:flex;align-items:center;min-height:44px;
  color:rgba(255,255,255,.78);font-size:.9375rem;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-links a:hover{color:var(--accent);transform:translateX(3px)}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand .logo-mark{background:var(--accent)}
.footer-brand span{font-weight:800;font-size:1.0625rem;letter-spacing:-.02em}
.footer p.desc{color:rgba(255,255,255,.72);font-size:.9375rem;margin-top:16px;max-width:38ch}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 32px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-family:var(--font-mono);font-size:.75rem;color:rgba(255,255,255,.55);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(14px)}
.reveal.is-in{animation:riseIn .6s var(--ease) var(--d,0s) forwards}
@keyframes riseIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
@keyframes slowZoom{from{transform:scale(1)}to{transform:scale(1.06)}}
@keyframes pulseDot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(1.4)}}
@keyframes growLine{from{width:0}to{width:75%}}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  .status-track i{width:75%}
}
.section-head{margin-bottom:32px}
.section-head .kicker{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.08em;color:var(--muted)}
.section-head h2{
  font-size:clamp(1.625rem,3.2vw,2.5rem);line-height:1.18;font-weight:800;letter-spacing:-.02em;margin-top:12px;
}
.section-head p{color:var(--muted);margin-top:12px;max-width:62ch}
.head-flex{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px}

/* roulang page: category1 */
:root{
  --accent:#C6F24E;
  --accent-deep:#A6D22F;
  --ink:#101310;
  --ink-soft:#2B312A;
  --muted:#6C736A;
  --paper:#F4F4EF;
  --surface:#FFFFFF;
  --line:#E3E3DA;
  --line-strong:#C9CABF;
  --alert:#FF6A3D;
  --r-lg:24px;
  --r-md:20px;
  --r-sm:14px;
  --shadow-1:0 1px 2px rgba(16,19,16,.05);
  --shadow-2:0 18px 40px -24px rgba(16,19,16,.22);
  --ease:cubic-bezier(.22,1,.36,1);
  --font-sans:'PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --font-mono:'JetBrains Mono','DIN Alternate',ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;background:none;border:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-0.02em}
p{margin:0}
h1{font-size:clamp(2.125rem,4.4vw,3.5rem);line-height:1.08}
h2{font-size:clamp(1.625rem,3.2vw,2.5rem);line-height:1.18}
h3{font-size:1.25rem;line-height:1.4;font-weight:600}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.mono{font-family:var(--font-mono);letter-spacing:.02em}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}

/* ---------- 纹理与通用 ---------- */
.grid-tex{
  background-color:var(--ink);
  background-image:
    repeating-linear-gradient(0deg,rgba(255,255,255,.04) 0 1px,transparent 1px 28px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.04) 0 1px,transparent 1px 28px);
}
.ui-hairline{height:1px;background:var(--line);transition:background .24s var(--ease)}
.ui-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.ui-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--line-strong)}
.ui-badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:9999px;font-size:.75rem;font-weight:600;letter-spacing:.08em;
}
.badge-ink{background:var(--ink);color:#fff}
.badge-line{background:var(--surface);border:1px solid var(--line);color:var(--ink)}
.badge-alert{background:var(--surface);border:1px solid var(--alert);color:var(--alert)}

/* ---------- 按钮 ---------- */
.ui-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:48px;padding:0 24px;border-radius:9999px;
  font-size:.9375rem;font-weight:600;border:1px solid transparent;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .18s var(--ease);
}
.ui-btn .arw{transition:transform .24s var(--ease)}
.ui-btn:active{transform:scale(.98)}
.ui-btn-primary{background:var(--accent);color:var(--ink)}
.ui-btn-primary:hover{background:var(--ink);color:var(--accent)}
.ui-btn-primary:hover .arw{transform:translateX(4px)}
.ui-btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.ui-btn-ghost:hover{border-color:var(--accent-deep);color:var(--accent-deep)}
.ui-btn-block{width:100%}
.ui-textlink{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:.9375rem;
  border-bottom:2px solid var(--accent);padding-bottom:2px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.ui-textlink:hover{color:var(--accent-deep);border-color:var(--accent-deep)}

/* ---------- 导航 ---------- */
.nav-wrap{position:fixed;top:16px;left:0;right:0;z-index:60;display:flex;justify-content:center;pointer-events:none}
.nav-capsule{
  pointer-events:auto;position:relative;display:flex;align-items:center;gap:16px;
  width:min(1200px,calc(100% - 32px));height:60px;padding:0 10px 0 18px;
  border-radius:9999px;
  background:rgba(244,244,239,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid rgba(16,19,16,.08);
  transition:height .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
}
.nav-capsule.is-scrolled{height:52px;background:rgba(244,244,239,.9);box-shadow:0 12px 30px -20px rgba(16,19,16,.38)}
.logo{display:flex;align-items:center;gap:10px;margin-right:auto;min-height:44px}
.logo-mark{
  width:30px;height:30px;flex:0 0 auto;border-radius:9px;background:var(--accent);
  display:inline-flex;align-items:center;justify-content:center;
}
.logo-text{font-weight:800;font-size:.9375rem;letter-spacing:-0.01em;white-space:nowrap}
.nav-menu{display:none;align-items:center;gap:4px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;min-height:44px;
  padding:0 14px;border-radius:9999px;font-size:.9375rem;color:var(--ink-soft);
  transition:color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:8px;width:3px;height:3px;border-radius:50%;
  background:var(--accent-deep);transform:translateX(-50%) scale(0);transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--ink);transform:translateY(-1px)}
.nav-link:hover::after{transform:translateX(-50%) scale(1)}
.nav-link.is-active{background:rgba(198,242,78,.45);color:var(--ink);font-weight:600}
.nav-cta{display:none}
.nav-btn{min-height:42px;height:42px;padding:0 18px;font-size:.875rem}
.nav-toggle{
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  width:44px;height:44px;border-radius:9999px;border:1px solid rgba(16,19,16,.14);
}
.nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-panel{
  position:fixed;top:88px;left:50%;transform:translateX(-50%);
  width:min(1200px,calc(100% - 32px));z-index:59;
  display:none;flex-direction:column;gap:4px;
  background:var(--paper);border:1px solid rgba(16,19,16,.08);
  border-radius:24px;padding:12px;box-shadow:0 24px 50px -26px rgba(16,19,16,.4);
}
.nav-panel.is-open{display:flex}
.nav-panel a{
  display:flex;align-items:center;min-height:48px;padding:0 16px;border-radius:16px;
  font-size:.9375rem;color:var(--ink-soft);transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-panel a:hover{background:rgba(198,242,78,.28);color:var(--ink)}
.nav-panel a.is-active{background:rgba(198,242,78,.45);color:var(--ink);font-weight:600}
.nav-panel .panel-btn{
  margin-top:6px;justify-content:center;background:var(--accent);color:var(--ink);font-weight:600;
}
.nav-panel .panel-btn:hover{background:var(--ink);color:var(--accent)}
@media (min-width:1024px){
  .nav-menu{display:flex}
  .nav-cta{display:block}
  .nav-toggle{display:none}
  .nav-panel{display:none !important}
}

/* ---------- 面包屑与页头 ---------- */
.page-hero{padding-top:126px;padding-bottom:8px}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:.8125rem;color:var(--muted);margin-bottom:26px;
}
.breadcrumb a{color:var(--ink-soft);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--accent-deep)}
.breadcrumb .sep{color:var(--line-strong);font-size:12px}
.breadcrumb .cur{color:var(--muted)}
.page-hero h1{margin:18px 0 16px;max-width:22ch}
.page-hero h1 em{font-style:normal;box-shadow:inset 0 -0.3em 0 rgba(198,242,78,.7)}
.page-hero .lead{max-width:62ch;color:var(--muted);font-size:1.0625rem}
.page-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:22px;font-size:.8125rem;color:var(--muted)}
.page-meta b{font-weight:600;color:var(--ink)}

/* ---------- 主布局 ---------- */
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:88px 0}}
.section-head{margin-bottom:36px}
.section-head h2{max-width:24ch}
.section-head p{margin-top:14px;color:var(--muted);max-width:60ch}
.layout{display:grid;gap:36px}
@media (min-width:1024px){
  .layout{grid-template-columns:288px minmax(0,1fr);gap:56px;align-items:start}
}
.side{display:grid;gap:20px}
@media (min-width:1024px){.side{position:sticky;top:96px}}
.side-card{padding:22px}
.side-card h3{font-size:1rem;margin-bottom:6px}
.side-card .side-note{font-size:.8125rem;color:var(--muted);margin-bottom:14px}
.anchor-nav{margin-bottom:18px}
.anchor-nav a{
  display:flex;align-items:center;gap:10px;padding:11px 0;
  font-size:.9375rem;color:var(--ink-soft);border-bottom:1px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.anchor-nav a:last-child{border-bottom:0}
.anchor-nav a:hover{color:var(--accent-deep);border-color:var(--accent-deep)}
.anchor-nav a .idx{font-family:var(--font-mono);font-size:.75rem;color:var(--muted)}

/* ---------- 图文交替流 ---------- */
.flow{display:grid}
.feature-row{
  display:grid;gap:22px;padding-bottom:38px;margin-bottom:38px;
  border-bottom:1px solid var(--line);transition:border-color .24s var(--ease);
}
.feature-row:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.feature-row:hover{border-color:var(--accent-deep)}
@media (min-width:768px){
  .feature-row{grid-template-columns:1fr 1fr;gap:38px;align-items:center}
  .feature-row.is-reverse .f-media{order:2}
  .feature-row.is-reverse .f-body{order:1}
}
.f-media{
  aspect-ratio:16/10;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(140deg,#2B312A,#101310);
}
.f-media img{width:100%;height:100%;object-fit:cover}
.f-body .f-num{
  display:inline-block;font-family:var(--font-mono);font-size:.8125rem;
  letter-spacing:.08em;color:var(--accent-deep);margin-bottom:10px;
}
.f-body h3{margin-bottom:12px}
.f-body p{color:var(--muted);font-size:.9688rem}

/* ---------- 要点清单 ---------- */
.check-list li{
  display:flex;gap:16px;padding:22px 0;border-bottom:1px solid var(--line);
  transition:border-color .24s var(--ease);
}
.check-list li:first-child{border-top:1px solid var(--line)}
.check-list li:hover{border-color:var(--accent-deep)}
.check-list li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;border-radius:2px;
  background:var(--accent);margin-top:13px;
}
.check-list h3{font-size:1.0625rem;font-weight:600;margin-bottom:6px}
.check-list p{color:var(--muted);font-size:.9375rem}

/* ---------- FAQ ---------- */
.faq{max-width:860px}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;text-align:left;font-size:1.0625rem;font-weight:600;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--accent-deep)}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:9999px;
  border:1px solid var(--line-strong);display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:.9375rem;line-height:1;
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);border-color:var(--accent-deep)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a p{max-width:720px;color:var(--muted);line-height:1.85;padding-bottom:24px;font-size:.9375rem}

/* ---------- 底部 CTA ---------- */
.cta-band{padding:72px 0;text-align:center}
@media (min-width:1024px){.cta-band{padding:88px 0}}
.cta-band h2{color:#fff;margin:0 auto 18px;max-width:22ch}
.cta-band p{color:rgba(255,255,255,.78);max-width:56ch;margin:0 auto 30px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.cta-band .ui-btn-ghost{border-color:rgba(255,255,255,.35);color:#fff}
.cta-band .ui-btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.cta-foot{margin-top:22px;font-size:.8125rem;color:rgba(255,255,255,.6)}

/* ---------- 页脚 ---------- */
.footer{padding:72px 0 28px;color:rgba(255,255,255,.78)}
.footer-grid{display:grid;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;margin-bottom:14px}
.footer .desc{font-size:.9375rem;line-height:1.85;max-width:360px;color:rgba(255,255,255,.72)}
.footer-links h4{color:#fff;font-size:.9375rem;font-weight:600;margin-bottom:14px}
.footer-links a{
  display:block;padding:6px 0;font-size:.9375rem;color:rgba(255,255,255,.72);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-links a:hover{color:var(--accent);transform:translateX(2px)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  font-family:var(--font-mono);font-size:.75rem;color:rgba(255,255,255,.55);letter-spacing:.02em;
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --accent:#C6F24E; --accent-deep:#A6D22F;
  --ink:#101310; --ink-soft:#2B312A; --muted:#6C736A;
  --paper:#F4F4EF; --surface:#FFFFFF;
  --line:#E3E3DA; --line-strong:#C9CABF; --alert:#FF6A3D;
  --r-lg:24px; --r-md:20px; --r-sm:14px;
  --shadow-1:0 1px 2px rgba(16,19,16,.05);
  --shadow-2:0 18px 40px -24px rgba(16,19,16,.22);
  --ease:cubic-bezier(.22,1,.36,1);
  --mono:'JetBrains Mono','DIN Alternate',ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:110px}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.18}
p{margin:0}
ul,ol{margin:0;padding:0}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
.grid-tex{
  background-image:
    repeating-linear-gradient(0deg,rgba(255,255,255,.04) 0 1px,transparent 1px 28px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.04) 0 1px,transparent 1px 28px);
}
.ui-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.ui-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--line-strong)}
.ui-hairline{height:1px;width:100%;background:var(--line);border:0;margin:0}
.ui-badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:9999px;
  font-size:.75rem;font-weight:600;letter-spacing:.08em;line-height:1.4}
.badge-dark{background:var(--ink);color:#fff}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--ink)}
.badge-accent{background:rgba(198,242,78,.55);color:var(--ink)}
.badge-alert{background:#fff;border:1px solid var(--alert);color:var(--alert)}

.ui-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:0 24px;
  border-radius:9999px;border:1px solid transparent;font-size:.95rem;font-weight:600;letter-spacing:.01em;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .18s var(--ease)}
.ui-btn:active{transform:scale(.98)}
.ui-btn-primary{background:var(--accent);color:var(--ink)}
.ui-btn-primary:hover{background:var(--ink);color:var(--accent)}
.ui-btn-primary:hover .arw{transform:translateX(4px)}
.ui-btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.ui-btn-ghost:hover{border-color:var(--accent-deep);color:var(--accent-deep)}
.ui-btn-sm{min-height:44px;padding:0 20px;font-size:.875rem}
.arw{transition:transform .24s var(--ease);flex:0 0 auto}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:8px}
.text-link{position:relative;display:inline-block;font-weight:600;color:var(--ink)}
.text-link::after{content:'';position:absolute;left:0;right:0;bottom:-3px;height:2px;background:var(--accent);
  transform-origin:left;transform:scaleX(.35);transition:transform .24s var(--ease)}
.text-link:hover::after{transform:scaleX(1)}
.text-link:hover{color:var(--accent-deep)}

/* ==== 导航 ==== */
.nav-wrap{position:fixed;top:16px;left:0;right:0;z-index:60;display:flex;flex-direction:column;align-items:center;pointer-events:none}
.nav-capsule{pointer-events:auto;display:flex;align-items:center;gap:16px;width:min(1200px,calc(100% - 32px));height:60px;
  padding:0 10px 0 16px;border-radius:9999px;background:rgba(244,244,239,.72);
  border:1px solid rgba(16,19,16,.08);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:height .28s var(--ease),background .28s var(--ease),box-shadow .28s var(--ease)}
.nav-wrap.is-scrolled .nav-capsule{height:52px;background:rgba(244,244,239,.92);box-shadow:0 14px 32px -22px rgba(16,19,16,.4)}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;min-height:44px}
.logo-mark{width:30px;height:30px;border-radius:9px;background:var(--accent);display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.logo-text{font-size:.98rem}
.nav-menu{display:none;align-items:center;gap:4px;margin-left:auto}
.nav-link{position:relative;display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border-radius:9999px;
  font-size:.9rem;color:var(--ink-soft);transition:color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease)}
.nav-link::after{content:'';position:absolute;left:50%;bottom:6px;width:0;height:3px;border-radius:3px;
  background:var(--accent-deep);transform:translateX(-50%);transition:width .22s var(--ease)}
.nav-link:hover{color:var(--ink);transform:translateY(-1px)}
.nav-link:hover::after{width:6px}
.nav-link.is-active{background:rgba(198,242,78,.55);color:var(--ink);font-weight:600}
.nav-link.is-active::after{display:none}
.nav-cta{display:none}
.nav-btn{min-height:42px;padding:0 20px;font-size:.875rem}
.nav-toggle{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  width:44px;height:44px;margin-left:auto;background:transparent;border:1px solid rgba(16,19,16,.12);border-radius:9999px}
.nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform .22s var(--ease),opacity .22s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-panel{pointer-events:auto;width:min(1200px,calc(100% - 32px));margin-top:10px;padding:0 12px;max-height:0;opacity:0;
  overflow:hidden;background:var(--paper);border:1px solid rgba(16,19,16,.08);border-radius:24px;
  box-shadow:0 26px 54px -32px rgba(16,19,16,.45);
  transition:max-height .25s var(--ease),opacity .22s var(--ease),padding .25s var(--ease)}
.nav-panel.is-open{max-height:460px;opacity:1;padding:12px}
.nav-panel a{display:block;padding:12px 14px;border-radius:14px;font-size:.95rem;color:var(--ink-soft)}
.nav-panel a:hover{background:#fff;color:var(--ink)}
.nav-panel a.is-active{background:rgba(198,242,78,.5);color:var(--ink);font-weight:600}
.nav-panel .panel-btn{margin-top:8px;background:var(--ink);color:var(--accent);text-align:center;font-weight:600}
@media(min-width:1024px){
  .nav-menu{display:flex}
  .nav-cta{display:block}
  .nav-toggle{display:none}
  .nav-panel{display:none}
}

/* ==== 阅读进度 ==== */
.read-bar{position:fixed;top:0;left:0;height:3px;width:0;z-index:70;background:var(--accent);transition:width .1s linear}

/* ==== 页面顶距 ==== */
.page-top{padding-top:104px}
@media(min-width:768px){.page-top{padding-top:118px}}

/* ==== 面包屑 ==== */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.8125rem;color:var(--muted);margin-bottom:26px}
.breadcrumb a{color:var(--muted);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--accent-deep)}
.breadcrumb .sep{color:var(--line-strong)}
.breadcrumb .current{max-width:26ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted)}

/* ==== 文章头 ==== */
.post-head{margin-bottom:32px}
.post-head h1{font-size:clamp(2.125rem,4.6vw,3.5rem);line-height:1.06;margin:16px 0 14px;max-width:22ch}
.post-sub{font-size:1rem;color:var(--muted);max-width:52ch}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:22px;font-size:.8125rem;color:var(--muted)}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong)}
.post-rule{margin-top:28px}

.post-cover{margin:0 0 40px;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--ink-soft)}
.post-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ==== 布局 ==== */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:44px}
@media(min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,760px) 300px;gap:56px;justify-content:center}
}
.article-main{min-width:0}

/* ==== 正文排版 ==== */
.article-body{font-size:1.0625rem;line-height:1.9;color:var(--ink-soft)}
.article-body > * + *{margin-top:20px}
.article-body h2{position:relative;padding-left:14px;margin:40px 0 16px;font-size:clamp(1.375rem,2.4vw,1.75rem);color:var(--ink)}
.article-body h2::before{content:'';position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:3px;background:var(--accent)}
.article-body h3{margin:32px 0 12px;font-size:1.25rem;font-weight:600;color:var(--ink);letter-spacing:-.01em}
.article-body p{margin:0}
.article-body strong{color:var(--ink)}
.article-body a{color:var(--ink);border-bottom:2px solid var(--accent);transition:color .2s var(--ease)}
.article-body a:hover{color:var(--accent-deep)}
.article-body ul,.article-body ol{list-style:none;padding-left:0}
.article-body li{position:relative;padding-left:22px;margin-top:10px}
.article-body ul li::before{content:'';position:absolute;left:0;top:.75em;width:8px;height:8px;border-radius:2px;
  background:var(--accent);border:1px solid var(--accent-deep)}
.article-body ol{counter-reset:item}
.article-body ol li::before{counter-increment:item;content:counter(item,decimal-leading-zero);
  position:absolute;left:0;top:.32em;width:auto;height:auto;background:none;border:0;color:var(--accent-deep);
  font-family:var(--mono);font-size:.75rem;font-weight:700}
.article-body blockquote{margin:28px 0;padding:20px 24px;background:var(--paper);border-left:3px solid var(--accent);
  border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--ink-soft)}
.article-body img{border-radius:16px;margin:28px auto}
.article-body figure{margin:28px 0}
.article-body figure img{margin-bottom:10px}
.article-body figcaption{font-size:.8125rem;color:var(--muted);text-align:center}
.article-body table{width:100%;border-collapse:collapse;font-size:.9rem;margin:24px 0;overflow:hidden;border-radius:12px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--paper);font-weight:600;color:var(--ink)}
.article-body code{padding:2px 7px;border-radius:8px;background:var(--paper);font-family:var(--mono);font-size:.875em}
.article-body hr{border:0;height:1px;background:var(--line);margin:36px 0}

.empty-state{padding:44px 32px;text-align:center;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface)}
.empty-state h2{font-size:1.375rem;margin-bottom:12px}
.empty-state p{color:var(--muted);margin-bottom:24px}

/* ==== 侧栏 ==== */
.aside-col{display:none}
@media(min-width:1024px){.aside-col{display:block}}
.aside-card{position:sticky;top:96px;padding:24px}
.aside-card h3{font-size:.75rem;letter-spacing:.08em;color:var(--muted);font-weight:600;margin-bottom:14px}
.toc-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 0;font-size:.9rem;
  color:var(--ink-soft);border-bottom:1px solid var(--line);transition:color .2s var(--ease),padding .2s var(--ease)}
.toc-list a:last-child{border-bottom:0}
.toc-list a:hover{color:var(--accent-deep);padding-left:4px}
.aside-meta{margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
.aside-meta dl{margin:0;display:grid;gap:12px}
.aside-meta dt{font-size:.75rem;letter-spacing:.08em;color:var(--muted)}
.aside-meta dd{margin:2px 0 0;font-size:.9rem;color:var(--ink)}
.toc-mobile{display:block;margin-bottom:32px}
@media(min-width:1024px){.toc-mobile{display:none}}
.toc-mobile details{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);padding:6px 18px}
.toc-mobile summary{list-style:none;cursor:pointer;font-weight:600;font-size:.95rem;padding:12px 0;display:flex;justify-content:space-between;align-items:center}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile summary::after{content:'+';font-family:var(--mono);color:var(--accent-deep);font-size:1.1rem}
.toc-mobile details[open] summary::after{content:'−'}
.toc-mobile .toc-list a{border-bottom:1px solid var(--line);padding:11px 0}

/* ==== 文末 ==== */
.post-foot{margin-top:56px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.tag-row .ui-badge{transition:background .2s var(--ease),color .2s var(--ease)}
.tag-row a.ui-badge:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.pn-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:640px){.pn-grid{grid-template-columns:1fr 1fr}}
.pn-card{display:block;padding:22px;border-radius:var(--r-sm)}
.pn-card .pn-label{display:inline-flex;align-items:center;gap:8px;font-size:.75rem;letter-spacing:.08em;color:var(--muted);margin-bottom:10px}
.pn-card .pn-title{font-size:1rem;font-weight:600;color:var(--ink);line-height:1.5}
.pn-card:hover .pn-title{color:var(--accent-deep)}
.pn-card.right{text-align:right}
.pn-card.right .pn-label{flex-direction:row-reverse}
.back-wrap{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px}

/* ==== 相关推荐 ==== */
.related{padding:80px 0 88px;border-top:1px solid var(--line);margin-top:72px}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-head h2{font-size:clamp(1.5rem,3vw,2.125rem)}
.section-head p{color:var(--muted);font-size:.9rem;margin-top:10px;max-width:52ch}
.related-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.related-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.rcard{display:flex;flex-direction:column;overflow:hidden;padding:0}
.rcard .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--ink-soft);border-bottom:1px solid var(--line)}
.rcard .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.rcard:hover .thumb img{transform:scale(1.04)}
.rcard .body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.rcard .body h3{font-size:1.0625rem;font-weight:600;line-height:1.5;color:var(--ink)}
.rcard:hover .body h3{color:var(--accent-deep)}
.rcard .body p{font-size:.875rem;color:var(--muted);line-height:1.8}
.rcard .meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:.75rem;color:var(--muted)}

/* ==== 底部 CTA ==== */
.cta-dark{background:var(--ink);color:#fff;padding:88px 0;text-align:center}
.cta-dark h2{font-size:clamp(1.75rem,3.6vw,2.5rem);color:#fff;margin-bottom:16px}
.cta-dark p{color:rgba(255,255,255,.78);max-width:60ch;margin:0 auto 30px;font-size:1rem}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.ui-btn-onDark{border-color:rgba(255,255,255,.35);color:#fff;background:transparent}
.ui-btn-onDark:hover{border-color:var(--accent);color:var(--accent)}

/* ==== 页脚 ==== */
.footer{background:var(--ink);color:rgba(255,255,255,.78);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:1.02rem;margin-bottom:14px}
.footer .desc{font-size:.875rem;line-height:1.8;color:rgba(255,255,255,.66);max-width:36ch}
.footer-links h4{margin:0 0 14px;font-size:.75rem;font-weight:600;letter-spacing:.08em;color:rgba(255,255,255,.5)}
.footer-links a{display:block;padding:6px 0;font-size:.9rem;color:rgba(255,255,255,.78);transition:color .2s var(--ease)}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-family:var(--mono);font-size:.75rem;color:rgba(255,255,255,.55)}

/* ==== 入场动效 ==== */
.reveal{opacity:0;transform:translateY(14px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .6s var(--ease),transform .6s var(--ease)}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1!important;transform:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
    --accent:#C6F24E;
    --accent-deep:#A6D22F;
    --ink:#101310;
    --ink-soft:#2B312A;
    --muted:#6C736A;
    --paper:#F4F4EF;
    --surface:#FFFFFF;
    --line:#E3E3DA;
    --line-strong:#C9CABF;
    --alert:#FF6A3D;
    --r-big:24px;
    --r-card:20px;
    --r-sm:16px;
    --r-xs:12px;
    --sh-soft:0 1px 2px rgba(16,19,16,.05);
    --sh-lift:0 18px 40px -24px rgba(16,19,16,.22);
    --ease:cubic-bezier(.22,1,.36,1);
    --font-cn:'PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
    --font-mono:'JetBrains Mono','DIN Alternate',ui-monospace,monospace;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:var(--font-cn);
    font-size:1rem;
    line-height:1.9;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}
  a{color:inherit;text-decoration:none;transition:color .24s var(--ease),border-color .24s var(--ease);}
  img{max-width:100%;display:block;}
  button{font-family:inherit;}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

  .container{max-width:1240px;margin:0 auto;padding:0 20px;width:100%;}
  @media (min-width:768px){ .container{padding:0 32px;} }

  .mono{font-family:var(--font-mono);letter-spacing:.04em;}
  .grid-tex{position:relative;}
  .grid-tex::before{
    content:'';position:absolute;inset:0;pointer-events:none;
    background-image:
      repeating-linear-gradient(0deg, rgba(255,255,255,.04) 0 1px, transparent 1px 28px),
      repeating-linear-gradient(90deg, rgba(255,255,255,.04) 0 1px, transparent 1px 28px);
  }
  .ui-hairline{height:1px;background:var(--line);border:0;transition:background .24s var(--ease);}

  /* ---------- 顶部悬浮胶囊导航 ---------- */
  .nav-wrap{
    position:fixed;top:16px;left:0;right:0;z-index:80;
    display:flex;flex-direction:column;align-items:center;
    padding:0 16px;pointer-events:none;
  }
  .nav-capsule{
    pointer-events:auto;
    width:min(1200px,100%);height:60px;
    display:flex;align-items:center;gap:14px;
    padding:0 10px 0 14px;
    border-radius:9999px;
    background:rgba(244,244,239,.72);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    border:1px solid rgba(16,19,16,.08);
    box-shadow:0 1px 2px rgba(16,19,16,.04);
    transition:height .26s var(--ease),background .26s var(--ease),box-shadow .26s var(--ease);
  }
  .nav-wrap.is-scrolled .nav-capsule{
    height:52px;background:rgba(244,244,239,.92);
    box-shadow:0 12px 30px -20px rgba(16,19,16,.4);
  }
  .logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.02em;color:var(--ink);}
  .logo-mark{
    width:32px;height:32px;flex:none;border-radius:10px;background:var(--accent);
    display:grid;place-items:center;
  }
  .logo-text{font-size:1rem;white-space:nowrap;}
  @media (max-width:520px){ .logo-text{font-size:.875rem;} .logo-mark{width:28px;height:28px;} }

  .nav-menu{display:none;}
  @media (min-width:1024px){
    .nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto;}
  }
  .nav-link{
    position:relative;display:inline-flex;align-items:center;height:44px;padding:0 15px;
    border-radius:9999px;font-size:.9375rem;color:var(--ink-soft);
    transition:transform .24s var(--ease),background .24s var(--ease),color .24s var(--ease);
  }
  .nav-link::after{
    content:'';position:absolute;left:50%;bottom:7px;width:0;height:3px;border-radius:3px;
    background:var(--accent-deep);transform:translateX(-50%);
    transition:width .24s var(--ease);
  }
  .nav-link:hover{transform:translateY(-1px);color:var(--ink);}
  .nav-link:hover::after{width:3px;}
  .nav-link.is-active{background:rgba(198,242,78,.55);color:var(--ink);font-weight:600;}
  .nav-link.is-active::after{display:none;}

  .nav-cta{display:none;}
  @media (min-width:1024px){ .nav-cta{display:block;margin-left:8px;} }
  .nav-btn{height:44px;padding:0 20px;font-size:.875rem;}

  .nav-toggle{
    display:grid;place-items:center;gap:5px;width:44px;height:44px;
    margin-left:auto;background:transparent;border:0;cursor:pointer;padding:0;
  }
  .nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink);transition:transform .24s var(--ease),opacity .2s var(--ease);}
  @media (min-width:1024px){ .nav-toggle{display:none;} }
  .nav-wrap.is-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .nav-wrap.is-open .nav-toggle span:nth-child(2){opacity:0;}
  .nav-wrap.is-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

  .nav-panel{
    pointer-events:auto;display:none;flex-direction:column;gap:4px;
    width:min(1200px,100%);margin-top:8px;padding:12px;
    background:var(--paper);border:1px solid var(--line);border-radius:24px;
    box-shadow:0 24px 50px -30px rgba(16,19,16,.45);
  }
  .nav-wrap.is-open .nav-panel{display:flex;}
  .nav-panel a{
    display:flex;align-items:center;min-height:48px;padding:0 16px;border-radius:16px;
    color:var(--ink-soft);font-size:.9375rem;
  }
  .nav-panel a:hover{background:rgba(16,19,16,.04);color:var(--ink);}
  .nav-panel a.is-active{background:rgba(198,242,78,.5);color:var(--ink);font-weight:600;}
  .nav-panel a.panel-btn{
    justify-content:center;margin-top:8px;background:var(--accent);color:var(--ink);font-weight:600;
  }
  @media (min-width:1024px){ .nav-panel{display:none !important;} }

  /* ---------- 按钮 ---------- */
  .ui-btn{
    display:inline-flex;align-items:center;justify-content:center;gap:10px;
    height:50px;padding:0 26px;border-radius:9999px;
    font-size:.9375rem;font-weight:600;letter-spacing:0;
    border:1px solid transparent;cursor:pointer;
    transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .18s var(--ease),box-shadow .24s var(--ease);
  }
  .ui-btn:active{transform:scale(.98);}
  .ui-btn .arw{transition:transform .24s var(--ease);}
  .ui-btn-primary{background:var(--accent);color:var(--ink);}
  .ui-btn-primary:hover{background:var(--ink);color:var(--accent);box-shadow:var(--sh-lift);}
  .ui-btn-primary:hover .arw{transform:translateX(4px);}
  .ui-btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
  .ui-btn-ghost:hover{border-color:var(--accent-deep);color:var(--accent-deep);}
  .ui-btn-ghost:hover .arw{transform:translateX(4px);}
  .ui-btn-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.3);}
  .ui-btn-light:hover{border-color:rgba(255,255,255,.7);background:rgba(255,255,255,.08);}
  .ui-btn-light:hover .arw{transform:translateX(4px);}
  .link-underline{
    display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--ink);
    border-bottom:2px solid var(--accent);padding-bottom:2px;
    transition:border-color .24s var(--ease),color .24s var(--ease);
  }
  .link-underline:hover{border-color:var(--accent-deep);color:var(--accent-deep);}

  /* ---------- 徽章 / 卡片 ---------- */
  .ui-badge{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:9999px;
    font-size:.75rem;letter-spacing:.08em;font-weight:600;white-space:nowrap;
  }
  .ui-badge-ink{background:var(--ink);color:#fff;}
  .ui-badge-line{background:var(--surface);color:var(--ink);border:1px solid var(--line);}
  .ui-badge-accent{background:var(--accent);color:var(--ink);}
  .ui-badge-alert{background:var(--surface);color:var(--alert);border:1px solid var(--alert);}

  .ui-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    padding:22px;box-shadow:var(--sh-soft);
    transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
  }
  .ui-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lift);border-color:var(--line-strong);}

  /* ---------- 面包屑 ---------- */
  .page-top{padding-top:150px;}
  .crumb{display:flex;align-items:center;gap:10px;font-size:.8125rem;color:var(--muted);flex-wrap:wrap;}
  .crumb a{color:var(--muted);}
  .crumb a:hover{color:var(--accent-deep);}
  .crumb .sep{color:var(--line-strong);}
  .crumb .now{color:var(--muted);}

  /* ---------- Hero 通栏大图 ---------- */
  .hero-banner{
    position:relative;overflow:hidden;border-radius:var(--r-big);
    height:560px;background:var(--ink);isolation:isolate;
  }
  .hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1;}
  .hero-mask{
    position:absolute;inset:0;z-index:2;
    background-image:
      repeating-linear-gradient(0deg, rgba(255,255,255,.045) 0 1px, transparent 1px 28px),
      repeating-linear-gradient(90deg, rgba(255,255,255,.045) 0 1px, transparent 1px 28px),
      linear-gradient(180deg, rgba(16,19,16,.32) 0%, rgba(16,19,16,.55) 45%, rgba(16,19,16,.88) 100%);
  }
  .hero-inner{
    position:relative;z-index:3;height:100%;
    display:flex;flex-direction:column;justify-content:flex-end;gap:18px;
    padding:48px;
  }
  .hero-inner h1{
    color:#fff;font-weight:800;letter-spacing:-.02em;
    font-size:clamp(2.125rem,5vw,3.5rem);line-height:1.06;max-width:20ch;
  }
  .hero-inner p{color:rgba(255,255,255,.8);font-size:1rem;max-width:44ch;}
  @media (max-width:767px){
    .hero-banner{height:auto;min-height:440px;}
    .hero-inner{padding:28px 22px 32px;gap:14px;}
  }

  /* ---------- 板块通用 ---------- */
  .section{padding:88px 0;}
  @media (max-width:767px){ .section{padding:56px 0;} }
  .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:32px;}
  .sec-head h2{
    font-size:clamp(1.625rem,3.2vw,2.5rem);line-height:1.18;
    font-weight:800;letter-spacing:-.02em;max-width:24ch;
  }
  .sec-head .sec-desc{color:var(--muted);font-size:.9375rem;max-width:52ch;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-family:var(--font-mono);font-size:.75rem;letter-spacing:.08em;
    color:var(--muted);text-transform:uppercase;margin-bottom:12px;
  }
  .eyebrow::before{content:'';width:22px;height:2px;border-radius:2px;background:var(--accent);}

  .lead-text{font-size:1.0625rem;color:var(--ink-soft);max-width:70ch;line-height:1.9;}
  .hl{background:linear-gradient(transparent 62%, rgba(198,242,78,.75) 62%);padding:0 2px;font-weight:600;}

  /* ---------- 数据带 ---------- */
  .stats{
    margin-top:40px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  }
  @media (min-width:900px){ .stats{grid-template-columns:repeat(4,minmax(0,1fr));} }
  .stat{padding:26px 4px 26px 0;}
  .stat + .stat{padding-left:26px;border-left:1px solid var(--line);}
  @media (max-width:899px){
    .stat:nth-child(2n){padding-left:24px;border-left:1px solid var(--line);}
    .stat:nth-child(2n+1){padding-left:0;border-left:0;}
    .stat:nth-child(n+3){border-top:1px solid var(--line);}
  }
  .stat b{
    display:block;font-family:var(--font-mono);font-weight:700;
    font-size:clamp(1.75rem,4vw,2.5rem);line-height:1.1;letter-spacing:-.01em;
  }
  .stat span{display:block;margin-top:8px;font-size:.75rem;letter-spacing:.08em;color:var(--muted);}

  /* ---------- 三列卡片网格 ---------- */
  .cards-3{display:grid;grid-template-columns:1fr;gap:24px;}
  @media (min-width:640px){ .cards-3{grid-template-columns:repeat(2,minmax(0,1fr));} }
  @media (min-width:1024px){ .cards-3{grid-template-columns:repeat(3,minmax(0,1fr));} }
  .card-media{
    position:relative;aspect-ratio:16/10;border-radius:var(--r-sm);overflow:hidden;
    background:#20261F;border:1px solid rgba(198,242,78,.35);
  }
  .card-media img{width:100%;height:100%;object-fit:cover;}
  .card-media .badge-slot{position:absolute;top:12px;left:12px;}
  .ui-card h3{font-size:1.25rem;line-height:1.4;font-weight:600;margin-top:16px;letter-spacing:-.01em;}
  .ui-card p{margin-top:10px;color:var(--muted);font-size:.9375rem;line-height:1.85;}
  .card-meta{
    margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
    display:flex;align-items:center;justify-content:space-between;
    font-family:var(--font-mono);font-size:.75rem;letter-spacing:.06em;color:var(--muted);
  }
  .card-meta .go{display:inline-flex;align-items:center;gap:6px;color:var(--ink);font-weight:600;}
  .ui-card:hover .card-meta .go{color:var(--accent-deep);}

  /* ---------- 单列清单 ---------- */
  .compact-list{display:flex;flex-direction:column;gap:10px;margin-top:8px;}
  .compact-list li{
    display:flex;align-items:flex-start;gap:14px;
    padding:16px 20px;border-radius:8px;background:rgba(16,19,16,.03);
    border:1px solid transparent;font-size:.9375rem;color:var(--ink-soft);
    transition:background .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
  }
  .compact-list li:hover{background:var(--surface);border-color:var(--line);transform:translateX(4px);}
  .compact-list li::before{
    content:'';flex:none;width:10px;height:10px;margin-top:10px;border-radius:3px;background:var(--accent-deep);
  }
  .compact-list .tag{font-family:var(--font-mono);font-size:.75rem;color:var(--muted);margin-left:auto;letter-spacing:.06em;white-space:nowrap;}
  @media (max-width:639px){ .compact-list .tag{display:none;} }

  /* ---------- 流程进度 ---------- */
  .flow{display:grid;gap:0;margin-top:38px;}
  @media (min-width:1000px){ .flow{grid-template-columns:repeat(4,minmax(0,1fr));} }
  .flow-step{position:relative;padding:0 24px 0 0;}
  .flow-step + .flow-step{border-left:1px solid var(--line);padding-left:24px;}
  @media (max-width:999px){
    .flow-step{padding:0 0 24px 26px;border-left:1px solid var(--line);}
    .flow-step + .flow-step{padding-left:26px;}
  }
  .flow-step .dot{
    position:absolute;left:-5px;top:6px;width:10px;height:10px;border-radius:9999px;
    background:var(--accent-deep);box-shadow:0 0 0 4px rgba(198,242,78,.25);
  }
  .flow-step:first-child .dot{animation:pulse 2s var(--ease) infinite;}
  @media (max-width:999px){ .flow-step .dot{left:-5px;top:8px;} }
  .flow-step .idx{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.08em;color:var(--muted);}
  .flow-step h3{font-size:1rem;font-weight:600;margin-top:8px;}
  .flow-step p{font-size:.875rem;color:var(--muted);margin-top:6px;line-height:1.8;}
  @keyframes pulse{
    0%,100%{box-shadow:0 0 0 4px rgba(198,242,78,.25);}
    50%{box-shadow:0 0 0 9px rgba(198,242,78,.08);}
  }
  .progress-track{height:2px;background:var(--line);border-radius:2px;overflow:hidden;margin-top:34px;}
  .progress-fill{height:100%;width:0;background:var(--accent-deep);transition:width 1200ms var(--ease);}

  /* ---------- FAQ ---------- */
  .faq-list{margin-top:12px;border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px;
    background:transparent;border:0;cursor:pointer;text-align:left;padding:20px 0;
    font-size:1.0625rem;font-weight:600;color:var(--ink);
  }
  .faq-q:hover{color:var(--accent-deep);}
  .faq-q .icon{
    flex:none;width:26px;height:26px;border-radius:9999px;border:1px solid var(--line-strong);
    display:grid;place-items:center;font-family:var(--font-mono);font-size:1rem;line-height:1;
    transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
  }
  .faq-item.is-open .faq-q .icon{transform:rotate(180deg);border-color:var(--accent-deep);background:var(--accent);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease);}
  .faq-a p{max-width:720px;color:var(--muted);line-height:1.85;font-size:.9375rem;padding-bottom:22px;}
  .faq-item.is-open .faq-a{max-height:340px;}

  /* ---------- 底部 CTA ---------- */
  .cta-block{
    position:relative;background:var(--ink);border-radius:var(--r-big);overflow:hidden;
    padding:88px 32px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:18px;
  }
  @media (max-width:767px){ .cta-block{padding:56px 22px;} }
  .cta-block h2{color:#fff;font-size:clamp(1.625rem,3.2vw,2.5rem);font-weight:800;letter-spacing:-.02em;line-height:1.2;max-width:22ch;}
  .cta-block p{color:rgba(255,255,255,.78);max-width:48ch;font-size:.9375rem;}
  .cta-block .row{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:6px;}
  .cta-block .note a{color:rgba(255,255,255,.78);border-bottom:1px solid rgba(255,255,255,.35);}
  .cta-block .note a:hover{color:var(--accent);border-color:var(--accent);}

  /* ---------- 页脚 ---------- */
  .footer{position:relative;background:var(--ink);color:#fff;margin-top:88px;overflow:hidden;}
  @media (max-width:767px){ .footer{margin-top:56px;} }
  .footer .container{position:relative;z-index:2;}
  .footer-grid{
    display:grid;grid-template-columns:1fr;gap:32px;padding:64px 0 40px;
  }
  @media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;} }
  .footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.02em;font-size:1.0625rem;}
  .footer .desc{color:rgba(255,255,255,.65);font-size:.875rem;line-height:1.85;margin-top:16px;max-width:40ch;}
  .footer-links h4{font-size:.75rem;letter-spacing:.08em;color:rgba(255,255,255,.5);font-weight:600;margin-bottom:14px;}
  .footer-links a{display:block;color:rgba(255,255,255,.82);font-size:.9375rem;padding:7px 0;}
  .footer-links a:hover{color:var(--accent);}
  .footer-bottom{
    position:relative;z-index:2;border-top:1px solid rgba(255,255,255,.1);
    padding:22px 0 34px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-family:var(--font-mono);font-size:.75rem;letter-spacing:.06em;color:rgba(255,255,255,.55);
  }

  /* ---------- 入场动效 ---------- */
  .reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
  .reveal.in{opacity:1;transform:none;}
  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important;}
    .reveal{opacity:1;transform:none;}
    html{scroll-behavior:auto;}
  }