/* roulang page: index */
:root{
  --c-ink:#14121C;
  --c-ink-2:#1E1B2A;
  --c-ink-3:#262233;
  --c-primary:#14CE86;
  --c-primary-hover:#0FB775;
  --c-primary-soft:#E4FBF1;
  --c-accent:#F2FF5C;
  --c-alert:#FF6A3D;
  --c-bg:#F7F8F5;
  --c-surface:#FFFFFF;
  --c-border:#E6E8E2;
  --c-text:#14121C;
  --c-text-2:#5C6169;
  --c-text-3:#8A8F98;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --sh-1:0 1px 2px rgba(20,18,28,.06),0 8px 24px rgba(20,18,28,.06);
  --sh-2:0 2px 4px rgba(20,18,28,.08),0 16px 32px rgba(20,18,28,.10);
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"SF Mono","JetBrains Mono","Space Grotesk",Menlo,Consolas,monospace;
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.7;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
body.menu-open{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(20,206,134,.45);outline-offset:2px;border-radius:6px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:12px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:transform var(--ease),background var(--ease),border-color var(--ease),box-shadow var(--ease),color var(--ease);
  white-space:nowrap;line-height:1.2;
}
.btn:active{transform:translateY(1px)}
.btn--primary{background:linear-gradient(135deg,var(--c-primary),#0FAE6E);color:#fff;box-shadow:0 6px 18px rgba(20,206,134,.28)}
.btn--primary:hover{background:linear-gradient(135deg,#17DE92,#0FB775);box-shadow:0 10px 24px rgba(20,206,134,.34)}
.btn--ghost{border-color:var(--c-primary);color:var(--c-primary);background:transparent}
.btn--ghost:hover{background:var(--c-primary-soft)}
.btn--outline-light{border-color:rgba(255,255,255,.45);color:#fff;background:transparent}
.btn--outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn--accent{background:var(--c-accent);color:var(--c-ink)}
.btn--accent:hover{background:#E9F84C}
.btn--sm{padding:9px 16px;font-size:14px;border-radius:10px}

/* ---------- 标签 / 徽章 ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:13px;font-weight:500;line-height:1.4;
}
.pill--soft{background:var(--c-primary-soft);color:var(--c-primary-hover)}
.pill--rare{background:var(--c-accent);color:var(--c-ink);font-weight:600}
.pill--alert{border:1px solid var(--c-alert);color:var(--c-alert);background:rgba(255,106,61,.06)}
.pill--dark{background:rgba(255,255,255,.10);color:#fff}
.pill--outline{border:1px solid var(--c-border);color:var(--c-text-2);background:var(--c-surface)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-border);
}
.nav-inner{height:66px;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand__mark{
  width:34px;height:34px;flex-shrink:0;
  background:linear-gradient(135deg,var(--c-primary),#0FAE6E);
  clip-path:polygon(0 0,calc(100% - 9px) 0,100% 9px,100% 100%,0 100%);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:700;font-size:15px;letter-spacing:-.5px;
}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__name{font-size:17px;font-weight:700;letter-spacing:-.2px}
.brand__sub{font-size:11px;color:var(--c-text-3);letter-spacing:1px}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:14px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);
  padding:6px 0;transition:color var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;height:2px;width:0;
  background:var(--c-primary);transition:width var(--ease),left var(--ease);
}
.nav-link:hover{color:var(--c-text)}
.nav-link:hover::after{width:100%;left:0}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{width:100%;left:0}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{
  display:flex;align-items:center;gap:8px;height:38px;padding:0 8px 0 12px;
  background:#F1F3EE;border:1px solid transparent;border-radius:999px;
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.nav-search:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(20,206,134,.18)}
.nav-search svg{flex-shrink:0;color:var(--c-text-3)}
.nav-search input{
  border:0;background:transparent;width:132px;font-size:14px;outline:none;
}
.nav-search input::placeholder{color:var(--c-text-3)}
.kbd{
  font-family:var(--font-mono);font-size:11px;line-height:1;
  padding:4px 6px;border-radius:6px;background:#fff;border:1px solid var(--c-border);
  color:var(--c-text-3);
}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--c-border);border-radius:12px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;inset:66px 0 0 0;z-index:70;background:var(--c-bg);
  padding:24px;display:none;flex-direction:column;
  overflow-y:auto;
}
.mobile-drawer.is-open{display:flex}
.mobile-drawer a{
  font-size:18px;font-weight:500;padding:16px 0;border-bottom:1px solid var(--c-border);
  color:var(--c-text-2);
}
.mobile-drawer a.is-active{color:var(--c-primary);font-weight:600}
.mobile-drawer .btn{margin-top:24px;width:100%}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;padding:76px 0 84px;
  background:
    radial-gradient(560px 340px at 10% 4%,rgba(20,206,134,.10),transparent 70%),
    radial-gradient(460px 320px at 92% 78%,rgba(20,206,134,.08),transparent 70%),
    var(--c-bg);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(20,18,28,.075) 1px,transparent 1px);
  background-size:16px 16px;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 78%);
  mask-image:linear-gradient(180deg,#000,transparent 78%);
}
.hero__grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center;
}
.hero h1{
  font-size:40px;line-height:1.25;font-weight:700;letter-spacing:-.6px;
  margin:18px 0 16px;
}
.hero h1 em{font-style:normal;color:var(--c-primary)}
.hero__lead{
  font-size:17px;color:var(--c-text-2);max-width:520px;margin-bottom:30px;
}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px}
.hero__stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--c-border);padding-top:22px;gap:8px;
}
.stat{position:relative;padding-right:12px}
.stat + .stat{border-left:1px solid var(--c-border);padding-left:16px}
.stat__num{font-family:var(--font-mono);font-size:22px;font-weight:700;letter-spacing:-.5px}
.stat__num small{font-size:13px;font-weight:500;color:var(--c-text-3);margin-left:2px}
.stat__label{font-size:13px;color:var(--c-text-3);margin-top:2px}
.hero__visual{position:relative}
.hero__frame{
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);
  border:1px solid var(--c-border);background:var(--c-surface);
  transform:rotate(-1.2deg);
}
.hero__frame img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero__tag{
  position:absolute;right:-8px;bottom:-14px;
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:14px;
  padding:12px 16px;box-shadow:var(--sh-2);display:flex;align-items:center;gap:10px;
}
.hero__tag strong{font-family:var(--font-mono);font-size:18px}
.hero__tag span{font-size:12px;color:var(--c-text-3)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section--tight{padding:72px 0}
.section--dark{background:var(--c-ink);color:#fff}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-head h2{font-size:30px;font-weight:700;line-height:1.3;letter-spacing:-.4px}
.section-head p{color:var(--c-text-2);font-size:15px;margin-top:8px;max-width:560px}
.section--dark .section-head p{color:rgba(255,255,255,.62)}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary);transition:gap var(--ease)}
.link-more:hover{gap:12px}

/* ---------- 玩法步骤 ---------- */
.steps-wrap{display:grid;grid-template-columns:280px 1fr;gap:56px;align-items:start}
.steps-intro{position:sticky;top:98px}
.steps-intro h2{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.4px;margin-bottom:14px}
.steps-intro p{color:var(--c-text-2);font-size:15px;margin-bottom:24px}
.steps-list{display:flex;flex-direction:column}
.step{position:relative;display:grid;grid-template-columns:64px 1fr;gap:22px;padding-bottom:34px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:31px;top:68px;bottom:0;
  border-left:1px dashed var(--c-border);
}
.step:last-child::before{display:none}
.step__num{
  width:64px;height:64px;display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:22px;font-weight:700;
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-sm);
  box-shadow:var(--sh-1);position:relative;z-index:1;
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,0 100%);
  color:var(--c-primary-hover);
}
.step h3{font-size:20px;font-weight:600;margin-bottom:8px}
.step p{font-size:15px;color:var(--c-text-2);max-width:600px}

/* ---------- 奖励卡片 ---------- */
.reward-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.reward-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.reward-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(20,206,134,.35)}
.reward-card__media{position:relative}
.reward-card__media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.reward-card__media .pill{position:absolute;top:12px;left:12px}
.reward-card__body{padding:22px}
.reward-card h3{font-size:19px;font-weight:600;margin-bottom:8px}
.reward-card p{font-size:14px;color:var(--c-text-2);min-height:44px}
.reward-card__meta{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:18px;padding-top:16px;border-top:1px solid var(--c-border);
}
.reward-card__value{font-family:var(--font-mono);font-size:18px;font-weight:700;color:var(--c-primary-hover)}
.reward-card__value small{font-size:12px;color:var(--c-text-3);margin-left:4px;font-weight:500}
.bar{height:8px;border-radius:4px;background:#EDEFEA;overflow:hidden;margin-top:14px}
.bar > i{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent))}

/* ---------- 任务进度 ---------- */
.task-head{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  margin-bottom:36px;flex-wrap:wrap;
}
.task-head h2{font-size:30px;font-weight:700;letter-spacing:-.4px;color:#fff}
.task-head p{color:rgba(255,255,255,.62);font-size:15px;margin-top:8px}
.task-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.task-item{
  background:var(--c-ink-2);border:1px solid rgba(255,255,255,.08);border-radius:var(--r-md);
  padding:20px;transition:border-color var(--ease),transform var(--ease);
}
.task-item:hover{border-color:rgba(20,206,134,.4);transform:translateY(-3px)}
.task-item__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.task-item h3{font-size:16px;font-weight:600;color:#fff}
.task-item__pct{font-family:var(--font-mono);font-size:16px;font-weight:700;color:var(--c-accent)}
.task-item__desc{font-size:13px;color:rgba(255,255,255,.55);margin-top:12px}
.task-track{height:8px;border-radius:4px;background:rgba(255,255,255,.12);overflow:hidden;margin-top:16px}
.task-track > i{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent))}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(20,206,134,.35)}
.news-card__media{position:relative}
.news-card__media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.news-card__media .pill{position:absolute;top:12px;left:12px}
.news-card__body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-card h3{
  font-size:17px;font-weight:600;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__desc{
  font-size:14px;color:var(--c-text-2);flex:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:18px;padding-top:14px;border-top:1px solid var(--c-border);
}
.news-card__date{font-family:var(--font-mono);font-size:13px;color:var(--c-text-3)}
.news-card__more{font-size:14px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:4px;transition:gap var(--ease)}
.news-card:hover .news-card__more{gap:10px}
.news-empty{
  grid-column:1/-1;text-align:center;padding:64px 24px;
  border:1px dashed var(--c-border);border-radius:var(--r-lg);background:var(--c-surface);
}
.news-empty svg{margin:0 auto 16px;color:var(--c-text-3)}
.news-empty p{color:var(--c-text-2);font-size:15px;margin-bottom:20px}

/* ---------- 数据条 ---------- */
.proof{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);
}
.proof__item{display:flex;flex-direction:column;gap:4px}
.proof__num{font-family:var(--font-mono);font-size:26px;font-weight:700;color:var(--c-primary-hover)}
.proof__label{font-size:14px;color:var(--c-text-2)}
.proof__item + .proof__item{border-left:1px solid var(--c-border);padding-left:20px}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;margin:0 auto;background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);overflow:hidden}
.faq-item{border-bottom:1px solid var(--c-border)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;cursor:pointer;padding:22px 26px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  font-size:17px;font-weight:600;line-height:1.5;transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--c-primary-hover)}
.faq-item summary::after{
  content:"+";flex-shrink:0;font-family:var(--font-mono);font-size:22px;font-weight:400;
  color:var(--c-text-3);transition:transform var(--ease),color var(--ease);line-height:1;
}
.faq-item[open] summary{color:var(--c-primary-hover)}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--c-primary)}
.faq-body{padding:0 26px 24px;font-size:15px;line-height:1.8;color:var(--c-text-2)}

/* ---------- 分类入口 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:8px}
.cat-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:12px;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(20,206,134,.35)}
.cat-card h3{font-size:19px;font-weight:600}
.cat-card p{font-size:14px;color:var(--c-text-2);flex:1}
.cat-card__link{font-size:14px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;transition:gap var(--ease)}
.cat-card:hover .cat-card__link{gap:12px}

/* ---------- CTA ---------- */
.cta-band{padding:0 0 88px}
.cta-card{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(135deg,var(--c-ink),var(--c-ink-2) 65%,#241F33);
  color:#fff;padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-card::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:16px 16px;
  -webkit-mask-image:linear-gradient(120deg,#000,transparent 72%);
  mask-image:linear-gradient(120deg,#000,transparent 72%);
}
.cta-card__text{position:relative;z-index:1;max-width:620px}
.cta-card h2{font-size:28px;font-weight:700;letter-spacing:-.4px;margin-bottom:10px}
.cta-card p{color:rgba(255,255,255,.68);font-size:15px}
.cta-card__actions{position:relative;z-index:1;display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand__name{color:#fff;font-size:17px;font-weight:700}
.footer-brand .brand__sub{color:rgba(255,255,255,.42)}
.footer-intro{font-size:14px;line-height:1.8;color:rgba(255,255,255,.58);max-width:320px}
.site-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.62);transition:color var(--ease)}
.footer-links a:hover{color:var(--c-primary)}
.footer-note{font-size:14px;line-height:1.9;color:rgba(255,255,255,.58)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.42);
}
.footer-bottom a{color:rgba(255,255,255,.56)}
.footer-bottom a:hover{color:var(--c-primary)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:960px}
  .hero h1{font-size:36px}
  .nav-links{gap:22px}
}
@media (max-width:1023px){
  .nav-links,.nav-search{display:none}
  .nav-toggle{display:flex}
  .nav-actions .btn--primary{display:none}
  .hero{padding:56px 0 64px}
  .hero__grid{grid-template-columns:1fr;gap:40px}
  .hero__visual{max-width:560px}
  .steps-wrap{grid-template-columns:1fr;gap:32px}
  .steps-intro{position:static}
  .reward-grid,.news-grid,.cat-grid{grid-template-columns:repeat(2,1fr)}
  .task-grid{grid-template-columns:repeat(2,1fr)}
  .proof{grid-template-columns:repeat(2,1fr);gap:24px}
  .proof__item:nth-child(3){border-left:0;padding-left:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .section-head h2,.steps-intro h2,.task-head h2{font-size:24px}
  .hero h1{font-size:28px}
  .hero__lead{font-size:15.5px}
  .hero__cta .btn{width:100%}
  .hero__stats{grid-template-columns:repeat(2,1fr);gap:16px}
  .stat + .stat{border-left:0;padding-left:0}
  .stat:nth-child(2n){border-left:1px solid var(--c-border);padding-left:16px}
  .reward-grid,.news-grid,.cat-grid,.task-grid{grid-template-columns:1fr}
  .cta-card{padding:32px 24px}
  .cta-card h2{font-size:22px}
  .cta-card__actions{width:100%}
  .cta-card__actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .faq-item summary{font-size:16px;padding:18px 20px}
  .faq-body{padding:0 20px 20px}
  .proof{padding:22px}
  .step{grid-template-columns:52px 1fr;gap:16px}
  .step__num{width:52px;height:52px;font-size:18px}
  .step::before{left:25px;top:56px}
}
@media (max-width:479px){
  .hero h1{font-size:26px}
  .brand__sub{display:none}
  .hero__tag{display:none}
}

/* roulang page: article */
:root{
  --c-ink:#14121C;
  --c-ink-2:#1E1B2A;
  --c-primary:#14CE86;
  --c-primary-hover:#0FB775;
  --c-primary-soft:#E4FBF1;
  --c-accent:#F2FF5C;
  --c-alert:#FF6A3D;
  --c-bg:#F7F8F5;
  --c-surface:#FFFFFF;
  --c-border:#E6E8E2;
  --c-text:#14121C;
  --c-text-2:#5C6169;
  --c-text-3:#8A8F98;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --sh-1:0 1px 2px rgba(20,18,28,.06), 0 8px 24px rgba(20,18,28,.06);
  --sh-2:0 2px 4px rgba(20,18,28,.08), 0 16px 32px rgba(20,18,28,.10);
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --nav-h:66px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:650;line-height:1.3;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0}
:focus-visible{outline:3px solid rgba(20,206,134,.45);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:12px;border:1.5px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;min-height:44px;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.btn--primary{background:linear-gradient(135deg,var(--c-primary),#0FAE6E);color:#fff;box-shadow:0 6px 18px rgba(20,206,134,.28)}
.btn--primary:hover{background:linear-gradient(135deg,var(--c-primary-hover),#0C9A61);transform:translateY(-2px);box-shadow:0 10px 26px rgba(20,206,134,.34)}
.btn--primary:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(20,206,134,.24)}
.btn--ghost{background:transparent;border-color:rgba(20,18,28,.18);color:var(--c-ink)}
.btn--ghost:hover{border-color:var(--c-primary);color:var(--c-primary-hover);transform:translateY(-2px)}
.btn--outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary-hover)}
.btn--outline:hover{background:var(--c-primary-soft);transform:translateY(-2px)}
.btn--sm{padding:9px 18px;font-size:14px;min-height:38px;border-radius:10px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--c-border);
}
.nav-inner{display:flex;align-items:center;gap:28px;height:var(--nav-h)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand__mark{
  width:34px;height:34px;border-radius:9px;
  background:linear-gradient(135deg,var(--c-primary),#0FAE6E);
  color:#fff;font-size:17px;font-weight:700;display:flex;align-items:center;justify-content:center;
  clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%);
}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__name{font-size:17px;font-weight:700;letter-spacing:.01em}
.brand__sub{font-size:11px;color:var(--c-text-3);letter-spacing:.16em}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);
  padding:8px 0;transition:color .18s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;border-radius:2px;
  background:var(--c-primary);transition:left .18s ease-out,right .18s ease-out;
}
.nav-link:hover{color:var(--c-ink)}
.nav-link:hover::after{left:0;right:0}
.nav-link.is-active{color:var(--c-primary-hover);font-weight:600}
.nav-link.is-active::after{left:0;right:0}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:38px;padding:0 12px;border-radius:999px;
  background:#F1F3EE;border:1px solid transparent;color:var(--c-text-3);
  transition:border-color .18s ease-out,background-color .18s ease-out,box-shadow .18s ease-out;
}
.nav-search input{
  border:0;background:transparent;outline:none;width:132px;font-size:14px;color:var(--c-text);
}
.nav-search input::placeholder{color:var(--c-text-3)}
.nav-search:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(20,206,134,.18)}
.nav-search .kbd{
  font-family:var(--mono);font-size:11px;line-height:1;padding:4px 6px;border-radius:6px;
  background:#fff;border:1px solid var(--c-border);color:var(--c-text-3);
}
.nav-toggle{
  display:none;width:44px;height:44px;border:0;background:transparent;border-radius:10px;position:relative;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:20px;height:2px;border-radius:2px;background:var(--c-ink);content:"";
  transition:transform .18s ease-out,opacity .18s ease-out;
}
.nav-toggle span{top:21px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:translateX(-50%) rotate(45deg);top:0}
body.nav-open .nav-toggle span::after{transform:translateX(-50%) rotate(-45deg);top:0}

/* ============ 文章布局 ============ */
.post-head{padding:34px 0 0}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--c-text-3)}
.breadcrumb a{color:var(--c-text-2);transition:color .18s ease-out}
.breadcrumb a:hover{color:var(--c-primary-hover)}
.bc-sep{color:var(--c-text-3)}
.bc-current{color:var(--c-text-3);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.post-title{
  margin-top:18px;font-size:36px;line-height:1.32;letter-spacing:.005em;max-width:22ch;
}
.post-meta{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  margin-top:18px;padding-bottom:26px;border-bottom:1px solid var(--c-border);
  font-size:13px;color:var(--c-text-3);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:13px;font-weight:600;line-height:1.4;
}
.badge--cat{background:var(--c-primary-soft);color:var(--c-primary-hover)}
.badge--rare{background:var(--c-accent);color:var(--c-ink)}
.dot-sep{width:4px;height:4px;border-radius:50%;background:var(--c-border)}

.post-layout{
  display:grid;grid-template-columns:220px minmax(0,760px);
  gap:56px;justify-content:center;align-items:start;
  padding:40px 0 20px;
}
.toc{position:sticky;top:calc(var(--nav-h) + 28px)}
.toc__title{
  font-size:12px;letter-spacing:.16em;color:var(--c-text-3);
  text-transform:uppercase;font-weight:600;margin-bottom:14px;
}
.toc__list{list-style:none;padding:0;border-left:1px solid var(--c-border)}
.toc__list li{margin:0}
.toc__list a{
  display:block;padding:7px 0 7px 14px;margin-left:-1px;
  font-size:14px;line-height:1.5;color:var(--c-text-2);
  border-left:2px solid transparent;transition:color .18s ease-out,border-color .18s ease-out;
}
.toc__list a:hover{color:var(--c-primary-hover);border-left-color:var(--c-primary)}
.toc__tip{
  margin-top:22px;padding:14px 16px;border-radius:var(--r-md);
  background:var(--c-surface);border:1px solid var(--c-border);
  font-size:13px;color:var(--c-text-2);line-height:1.7;
}
.toc__tip strong{color:var(--c-ink);font-weight:600}

.post-body{min-width:0}
.article-content{font-size:16px;line-height:1.9;color:#22202B}
.article-content p{margin:0 0 1.2em}
.article-content h2{
  position:relative;font-size:24px;line-height:1.45;color:var(--c-ink);
  margin:40px 0 16px;padding-left:14px;scroll-margin-top:calc(var(--nav-h) + 24px);
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:2px;background:var(--c-primary);
}
.article-content h3{font-size:19px;color:var(--c-ink);margin:30px 0 12px;scroll-margin-top:calc(var(--nav-h) + 24px)}
.article-content ul,.article-content ol{margin:0 0 1.2em;padding-left:1.4em}
.article-content li{margin:.35em 0}
.article-content blockquote{
  margin:1.5em 0;padding:16px 20px;border-left:3px solid var(--c-primary);
  background:var(--c-primary-soft);border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:#26443A;font-size:15.5px;
}
.article-content img{width:100%;height:auto;border-radius:14px;margin:1.6em 0 .7em}
.article-content figcaption{font-size:13px;color:var(--c-text-3);text-align:center;margin-bottom:1.6em}
.article-content a{color:var(--c-primary-hover);text-decoration:underline;text-underline-offset:3px}
.article-content a:hover{color:#0C9A61}
.article-content table{
  width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px;
  border:1px solid var(--c-border);border-radius:12px;overflow:hidden;background:var(--c-surface);
}
.article-content th,.article-content td{padding:11px 14px;border-bottom:1px solid var(--c-border);text-align:left}
.article-content thead th{background:#F1F3EE;font-weight:600;color:var(--c-ink)}
.article-content tbody tr:nth-child(even){background:#FAFBF8}
.article-content code{
  font-family:var(--mono);font-size:14px;background:#F1F3EE;padding:2px 6px;border-radius:6px;color:#1F3A31;
}
.article-content pre{
  background:var(--c-ink);color:#E9EBE6;padding:16px 18px;border-radius:12px;overflow:auto;margin:1.5em 0;
}
.article-content pre code{background:transparent;color:inherit;padding:0;font-size:13.5px;line-height:1.7}
.article-content hr{border:0;border-top:1px solid var(--c-border);margin:2.2em 0}

.empty-state{
  padding:44px 28px;border-radius:var(--r-lg);background:var(--c-surface);
  border:1px solid var(--c-border);text-align:center;box-shadow:var(--sh-1);
}
.empty-state__icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:16px;
  background:var(--c-primary-soft);color:var(--c-primary-hover);
  display:flex;align-items:center;justify-content:center;
}
.empty-state h2{font-size:22px;margin-bottom:8px}
.empty-state p{color:var(--c-text-2);font-size:15px;margin-bottom:20px}

/* ============ 文末模块 ============ */
.post-foot{margin-top:44px;padding-top:28px;border-top:1px solid var(--c-border)}
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.tag-row__label{font-size:13px;color:var(--c-text-3);letter-spacing:.08em}
.tag{
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:500;
  background:var(--c-surface);border:1px solid var(--c-border);color:var(--c-text-2);
  transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.tag:hover{border-color:rgba(20,206,134,.45);color:var(--c-primary-hover);transform:translateY(-2px)}

.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.post-nav__card{
  display:flex;flex-direction:column;gap:6px;
  padding:18px 20px;border-radius:var(--r-md);background:var(--c-surface);
  border:1px solid var(--c-border);box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.post-nav__card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(20,206,134,.35)}
.post-nav__card--next{text-align:right;align-items:flex-end}
.post-nav__label{font-size:12px;letter-spacing:.14em;color:var(--c-text-3)}
.post-nav__title{font-size:15px;font-weight:600;color:var(--c-ink);line-height:1.55}

.related{margin-top:52px}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;
}
.section-head h2{font-size:26px;letter-spacing:.005em}
.section-head p{margin-top:8px;font-size:14px;color:var(--c-text-2)}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary-hover);
  white-space:nowrap;
}
.link-more span{transition:transform .18s ease-out}
.link-more:hover span{transform:translateX(4px)}

.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-md);box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(20,206,134,.35)}
.card__media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-soft)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.card:hover .card__media img{transform:scale(1.04)}
.card__body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card__title{
  font-size:17px;font-weight:650;line-height:1.5;color:var(--c-ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card__desc{
  font-size:14px;line-height:1.7;color:var(--c-text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card__foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:12px;border-top:1px solid var(--c-border);
  font-size:12.5px;color:var(--c-text-3);
}
.card__link{display:inline-flex;align-items:center;gap:5px;font-size:13px;font-weight:600;color:var(--c-primary-hover)}
.card__link span{transition:transform .18s ease-out}
.card:hover .card__link span{transform:translateX(4px)}

.back-cat{
  margin-top:32px;display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  padding:18px 22px;border-radius:var(--r-md);
  background:linear-gradient(180deg,#FFFFFF,#FBFCF9);
  border:1px dashed rgba(20,206,134,.5);
}
.back-cat__text{font-size:14px;color:var(--c-text-2)}
.back-cat a{font-size:14px;font-weight:600;color:var(--c-primary-hover)}
.back-cat a:hover{color:#0C9A61}

/* ============ 窄 CTA ============ */
.cta-strip{padding:64px 0 0}
.cta-strip__inner{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:30px 34px;border-radius:var(--r-lg);
  background:var(--c-ink);color:#fff;
}
.cta-strip__inner::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:16px 16px;opacity:.5;pointer-events:none;
}
.cta-strip__title{position:relative;font-size:22px;color:#fff}
.cta-strip__desc{position:relative;margin-top:8px;font-size:14.5px;color:rgba(255,255,255,.72);max-width:52ch}
.cta-strip .btn{position:relative}

/* ============ 页脚 ============ */
.site-footer{margin-top:88px;background:var(--c-ink);color:#fff;padding:60px 0 0}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.site-footer .brand__name{color:#fff}
.site-footer .brand__sub{color:rgba(255,255,255,.5)}
.footer-intro{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);max-width:38ch}
.site-footer h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.06em}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.68);transition:color .18s ease-out}
.footer-links a:hover{color:var(--c-primary)}
.footer-note{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.58)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0 30px;font-size:12.5px;color:rgba(255,255,255,.48);
}

@media (max-width:1024px){
  .post-layout{grid-template-columns:minmax(0,760px);gap:0}
  .toc{display:none}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:960px){
  .nav-links{
    position:fixed;left:0;right:0;top:var(--nav-h);bottom:0;
    flex-direction:column;align-items:flex-start;gap:6px;
    padding:22px 24px 40px;margin:0;
    background:#fff;border-top:1px solid var(--c-border);
    transform:translateY(-10px);opacity:0;pointer-events:none;overflow-y:auto;
    transition:transform .2s ease-out,opacity .2s ease-out;
  }
  body.nav-open .nav-links{transform:none;opacity:1;pointer-events:auto}
  .nav-link{font-size:18px;padding:14px 0;width:100%;border-bottom:1px solid var(--c-border)}
  .nav-link::after{display:none}
  .nav-search{display:none}
  .nav-toggle{display:block}
  body.nav-open{overflow:hidden}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .post-head{padding-top:24px}
  .post-title{font-size:28px;max-width:none}
  .post-layout{padding:28px 0 0}
  .article-content h2{font-size:21px;margin-top:34px}
  .article-content h3{font-size:18px}
  .post-nav{grid-template-columns:1fr}
  .post-nav__card--next{text-align:left;align-items:flex-start}
  .card-grid{grid-template-columns:1fr}
  .cta-strip{padding:48px 0 0}
  .cta-strip__inner{padding:24px 22px;flex-direction:column;align-items:flex-start}
  .site-footer{margin-top:56px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:480px){
  .brand__sub{display:none}
  .btn{width:100%}
  .nav-actions .btn{width:auto}
  .post-title{font-size:26px}
}

/* roulang page: category1 */
:root{
  --c-ink:#14121C;
  --c-ink-2:#1E1B2A;
  --c-primary:#14CE86;
  --c-primary-hover:#0FB775;
  --c-primary-soft:#E4FBF1;
  --c-accent:#F2FF5C;
  --c-alert:#FF6A3D;
  --c-bg:#F7F8F5;
  --c-surface:#FFFFFF;
  --c-border:#E6E8E2;
  --c-text:#14121C;
  --c-text-2:#5C6169;
  --c-text-3:#8A8F98;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --sh-1:0 1px 2px rgba(20,18,28,.06),0 8px 24px rgba(20,18,28,.06);
  --sh-2:0 2px 4px rgba(20,18,28,.08),0 16px 32px rgba(20,18,28,.10);
  --mono:"JetBrains Mono","Space Grotesk",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --gutter:24px;
  --section:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  overflow-x:hidden;
}
body.is-locked{overflow:hidden;}
img{max-width:100%;display:block;width:100%;object-fit:cover;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
input,button{font-size:15px;}
:focus-visible{outline:3px solid rgba(20,206,134,.45);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--gutter);}
.section{padding:var(--section) 0;}
.section--tight{padding:56px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap;}
.section-head h2{font-size:30px;}
.section-head p{color:var(--c-text-2);font-size:15px;margin-top:8px;max-width:640px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-primary-hover);
  background:var(--c-primary-soft);border-radius:999px;padding:6px 14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--c-border);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:66px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand__mark{
  width:34px;height:34px;border-radius:9px;
  background:linear-gradient(135deg,var(--c-primary),#0FAE6E);
  color:#fff;font-weight:700;font-size:17px;
  display:flex;align-items:center;justify-content:center;
  clip-path:polygon(0 0,100% 0,100% 76%,76% 100%,0 100%);
}
.brand__text{display:flex;flex-direction:column;line-height:1.15;}
.brand__name{font-size:18px;font-weight:700;letter-spacing:-.02em;}
.brand__sub{font-size:11px;color:var(--c-text-3);letter-spacing:.16em;}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:14px;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);
  padding:20px 0;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:14px;height:2px;
  background:var(--c-primary);border-radius:2px;
  transition:left .2s ease-out,right .2s ease-out;
}
.nav-link:hover{color:var(--c-text);}
.nav-link:hover::after{left:0;right:0;}
.nav-link.is-active{color:var(--c-primary-hover);font-weight:600;}
.nav-link.is-active::after{left:0;right:0;}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:38px;padding:0 12px;min-width:236px;
  background:#F1F3EE;border:1px solid transparent;border-radius:999px;
  color:var(--c-text-3);
  transition:border-color .18s ease-out,box-shadow .18s ease-out,background .18s ease-out;
}
.nav-search:focus-within{
  background:#fff;border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(20,206,134,.22);
}
.nav-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--c-text);
}
.nav-search input::placeholder{color:var(--c-text-3);}
.kbd{
  font-family:var(--mono);font-size:11px;color:var(--c-text-3);
  background:#fff;border:1px solid var(--c-border);border-radius:6px;
  padding:2px 6px;white-space:nowrap;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;cursor:pointer;border-radius:12px;
  padding:12px 22px;font-size:15px;font-weight:600;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.btn:active{transform:translateY(1px);}
.btn--primary{background:linear-gradient(135deg,var(--c-primary),#0FAE6E);color:#fff;box-shadow:0 6px 18px rgba(20,206,134,.28);}
.btn--primary:hover{background:linear-gradient(135deg,var(--c-primary-hover),#0C9C62);box-shadow:0 10px 24px rgba(20,206,134,.34);}
.btn--ghost{background:transparent;color:var(--c-text);border:1.5px solid var(--c-border);}
.btn--ghost:hover{border-color:var(--c-primary);color:var(--c-primary-hover);}
.btn--outline{background:#fff;color:var(--c-primary-hover);border:1.5px solid var(--c-primary);}
.btn--outline:hover{background:var(--c-primary-soft);}
.btn--sm{padding:9px 18px;font-size:14px;border-radius:11px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--c-border);
  background:#fff;cursor:pointer;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:2px;background:var(--c-ink);border-radius:2px;
  transition:transform .2s ease-out,opacity .2s ease-out;
}
.nav-toggle span{top:21px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateX(-50%) rotate(45deg);top:0;}
.nav-toggle[aria-expanded="true"] span::after{transform:translateX(-50%) rotate(-45deg);top:0;}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  padding:56px 0 52px;
  background:
    radial-gradient(560px 280px at 12% 0%,rgba(20,206,134,.10),transparent 70%),
    radial-gradient(420px 240px at 88% 110%,rgba(242,255,92,.20),transparent 72%),
    var(--c-bg);
  border-bottom:1px solid var(--c-border);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(20,18,28,.10) 1px,transparent 1px);
  background-size:16px 16px;opacity:.5;pointer-events:none;
}
.cat-hero__inner{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.breadcrumb{font-size:13px;color:var(--c-text-3);display:flex;align-items:center;gap:8px;margin-bottom:16px;}
.breadcrumb a:hover{color:var(--c-primary-hover);}
.cat-hero h1{font-size:40px;margin:12px 0 14px;}
.cat-hero__lead{color:var(--c-text-2);font-size:16px;max-width:560px;}
.cat-hero__meta{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:500;color:var(--c-text-2);
  background:#fff;border:1px solid var(--c-border);border-radius:999px;padding:6px 14px;
}
.chip--strong{background:var(--c-accent);color:var(--c-ink);border-color:transparent;font-weight:600;}
.cat-hero__visual{
  position:relative;height:230px;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-2);
  clip-path:polygon(0 0,100% 0,100% 100%,34px 100%,0 calc(100% - 34px));
}
.cat-hero__visual img{height:100%;}
.cat-hero__visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,18,28,0) 30%,rgba(20,18,28,.62) 100%);
}
.cat-hero__tag{
  position:absolute;left:18px;bottom:16px;z-index:2;color:#fff;
  font-size:13px;font-weight:600;letter-spacing:.02em;
}

/* ---------- 子导航 tab ---------- */
.tabs{
  display:flex;gap:10px;flex-wrap:wrap;
  padding:10px;background:#fff;border:1px solid var(--c-border);
  border-radius:999px;box-shadow:var(--sh-1);
  margin:-26px auto 0;position:relative;z-index:3;max-width:fit-content;
}
.tab{
  font-size:14px;font-weight:600;color:var(--c-text-2);
  padding:9px 20px;border-radius:999px;
  transition:background .18s ease-out,color .18s ease-out;
}
.tab:hover{background:var(--c-primary-soft);color:var(--c-primary-hover);}
.tab.is-active{background:var(--c-primary);color:#fff;}

/* ---------- 速览数据 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:var(--c-border);
  border:1px solid var(--c-border);border-radius:var(--r-md);
  overflow:hidden;margin-top:34px;
}
.stat{background:#fff;padding:20px 22px;}
.stat__num{font-family:var(--mono);font-size:24px;font-weight:700;color:var(--c-ink);letter-spacing:-.02em;}
.stat__label{font-size:13px;color:var(--c-text-3);margin-top:4px;}

/* ---------- 卡片网格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(20,206,134,.30);}
.card__media{position:relative;aspect-ratio:16/9;background:var(--c-primary-soft);overflow:hidden;}
.card__media img{height:100%;transition:transform .35s ease-out;}
.card:hover .card__media img{transform:scale(1.04);}
.badge{
  position:absolute;top:12px;left:12px;z-index:2;
  font-size:12px;font-weight:600;border-radius:999px;padding:4px 12px;
  background:var(--c-accent);color:var(--c-ink);
}
.badge--alert{background:var(--c-alert);color:#fff;}
.card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card__tag{font-size:12px;font-weight:600;color:var(--c-primary-hover);}
.card__title{font-size:18px;line-height:1.45;font-weight:700;}
.card__desc{font-size:14px;color:var(--c-text-2);line-height:1.7;}
.card__foot{
  margin-top:auto;padding-top:14px;border-top:1px dashed var(--c-border);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.card__date{font-family:var(--mono);font-size:12px;color:var(--c-text-3);}
.card__link{font-size:14px;font-weight:600;color:var(--c-primary-hover);display:inline-flex;align-items:center;gap:6px;}
.card__link .arrow{transition:transform .18s ease-out;}
.card:hover .card__link .arrow{transform:translateX(4px);}

/* ---------- 分页 ---------- */
.pager{display:flex;align-items:center;justify-content:center;gap:10px;margin-top:44px;}
.pager a,.pager span{
  width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:14px;font-weight:600;
  background:#fff;border:1px solid var(--c-border);color:var(--c-text-2);
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
}
.pager a:hover{border-color:var(--c-primary);color:var(--c-primary-hover);transform:translateY(-2px);}
.pager .is-current{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.pager .pager__next{width:auto;padding:0 20px;border-radius:999px;}

/* ---------- 编号步骤 ---------- */
.steps-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.steps-side{position:sticky;top:100px;}
.steps-side h2{font-size:30px;margin-bottom:14px;}
.steps-side p{color:var(--c-text-2);font-size:15px;}
.steps{border-left:1px dashed var(--c-border);padding-left:32px;display:flex;flex-direction:column;gap:28px;}
.step{position:relative;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-md);padding:22px;box-shadow:var(--sh-1);}
.step::before{
  content:"";position:absolute;left:-37px;top:28px;width:10px;height:10px;
  background:var(--c-primary);border-radius:2px;transform:rotate(45deg);
}
.step__num{font-family:var(--mono);font-size:22px;font-weight:700;color:var(--c-primary-hover);}
.step h3{font-size:19px;margin:8px 0 8px;}
.step p{font-size:15px;color:var(--c-text-2);}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);}
.faq details{border-bottom:1px solid var(--c-border);}
.faq details:last-child{border-bottom:0;}
.faq summary{
  list-style:none;cursor:pointer;position:relative;
  padding:22px 62px 22px 24px;font-size:17px;font-weight:600;
  transition:color .18s ease-out;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{
  content:"";position:absolute;right:26px;top:50%;
  width:14px;height:14px;margin-top:-7px;
  background:
    linear-gradient(var(--c-text-2),var(--c-text-2)) center/14px 2px no-repeat,
    linear-gradient(var(--c-text-2),var(--c-text-2)) center/2px 14px no-repeat;
  transition:transform .2s ease-out,background .2s ease-out;
}
.faq details[open] summary{color:var(--c-primary-hover);}
.faq details[open] summary::after{
  transform:rotate(45deg);
  background:
    linear-gradient(var(--c-primary),var(--c-primary)) center/14px 2px no-repeat,
    linear-gradient(var(--c-primary),var(--c-primary)) center/2px 14px no-repeat;
}
.faq .answer{padding:0 24px 24px;font-size:15px;line-height:1.8;color:var(--c-text-2);}

/* ---------- 相关分类 + CTA ---------- */
.related{display:flex;gap:12px;flex-wrap:wrap;align-items:center;justify-content:center;}
.related__label{font-size:14px;color:var(--c-text-3);}
.pill{
  font-size:14px;font-weight:600;color:var(--c-text-2);
  background:#fff;border:1px solid var(--c-border);border-radius:999px;padding:10px 20px;
  transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.pill:hover{border-color:var(--c-primary);color:var(--c-primary-hover);transform:translateY(-2px);box-shadow:var(--sh-1);}
.cta-bar{
  position:relative;overflow:hidden;
  background:var(--c-ink);border-radius:var(--r-lg);
  padding:34px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:var(--sh-2);
}
.cta-bar::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:16px 16px;pointer-events:none;
}
.cta-bar__text{position:relative;}
.cta-bar h2{font-size:24px;color:#fff;margin-bottom:8px;}
.cta-bar p{font-size:15px;color:rgba(255,255,255,.72);}
.cta-bar .btn{position:relative;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.72);margin-top:var(--section);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand__name{color:#fff;font-size:18px;font-weight:700;}
.footer-brand .brand__sub{color:rgba(255,255,255,.45);}
.footer-intro{font-size:14px;line-height:1.8;max-width:340px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-links a:hover{color:var(--c-primary);}
.footer-note{font-size:14px;line-height:1.9;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 26px;display:flex;gap:18px;flex-wrap:wrap;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.45);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .nav-search{min-width:180px;}
  .nav-links{gap:20px;}
}
@media (max-width:1023px){
  :root{--section:64px;}
  .nav-links{
    position:fixed;inset:66px 0 0;z-index:55;
    flex-direction:column;align-items:flex-start;gap:0;
    background:#fff;padding:20px var(--gutter) 120px;margin:0;
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity .2s ease-out,transform .2s ease-out;
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateY(0);opacity:1;pointer-events:auto;}
  .nav-link{font-size:18px;width:100%;padding:18px 0;border-bottom:1px solid var(--c-border);}
  .nav-link::after{display:none;}
  .nav-toggle{display:block;}
  .nav-search{display:none;}
  .cat-hero__inner{grid-template-columns:1fr;gap:32px;}
  .cat-hero__visual{height:200px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .steps-wrap{grid-template-columns:1fr;gap:32px;}
  .steps-side{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--gutter:18px;--section:56px;}
  .cat-hero{padding:40px 0 44px;}
  .cat-hero h1{font-size:30px;}
  .cat-hero__visual{height:170px;}
  .section-head h2{font-size:24px;}
  .grid-3{grid-template-columns:1fr;}
  .tabs{border-radius:var(--r-md);max-width:none;justify-content:flex-start;}
  .stat-strip{grid-template-columns:1fr 1fr;}
  .cta-bar{padding:26px 22px;}
  .cta-bar h2{font-size:20px;}
  .cta-bar .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:519px){
  .cat-hero h1{font-size:26px;}
  .stat-strip{grid-template-columns:1fr;}
  .pager .pager__next{padding:0 14px;}
  .btn{width:100%;}
  .nav-actions .btn{width:auto;}
}

/* roulang page: category2 */
:root{
  --c-ink:#14121C;
  --c-ink-2:#1E1B2A;
  --c-primary:#14CE86;
  --c-primary-hover:#0FB775;
  --c-primary-soft:#E4FBF1;
  --c-accent:#F2FF5C;
  --c-alert:#FF6A3D;
  --c-bg:#F7F8F5;
  --c-surface:#FFFFFF;
  --c-border:#E6E8E2;
  --c-text:#14121C;
  --c-text-2:#5C6169;
  --c-text-3:#8A8F98;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --sh-1:0 1px 2px rgba(20,18,28,.06),0 8px 24px rgba(20,18,28,.06);
  --sh-2:0 2px 4px rgba(20,18,28,.08),0 16px 32px rgba(20,18,28,.10);
  --mono:"JetBrains Mono","Space Grotesk",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --section-gap:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
h1,h2,h3,h4,p,figure,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;width:100%;object-fit:cover;}
button{font-family:inherit;}
input,button{font-size:inherit;}
:focus-visible{outline:3px solid rgba(20,206,134,.45);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.mono{font-family:var(--mono);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:12px;
  padding:12px 22px;font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
  white-space:nowrap;
}
.btn--primary{background:linear-gradient(135deg,var(--c-primary),#0FAE6E);color:#fff;box-shadow:0 6px 18px rgba(20,206,134,.28);}
.btn--primary:hover{background:linear-gradient(135deg,var(--c-primary-hover),#0C9E62);transform:translateY(-2px);box-shadow:0 12px 26px rgba(20,206,134,.32);}
.btn--primary:active{transform:translateY(1px);}
.btn--ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn--ghost:hover{background:var(--c-primary-soft);transform:translateY(-2px);}
.btn--ink{background:var(--c-ink);color:#fff;}
.btn--ink:hover{background:#222033;transform:translateY(-2px);}
.btn--ghostlight{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;}
.btn--ghostlight:hover{background:rgba(255,255,255,.12);transform:translateY(-2px);}
.btn--sm{padding:9px 16px;font-size:14px;border-radius:10px;}
.btn--xs{padding:8px 14px;font-size:13px;border-radius:10px;}
.btn--block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- badges & tags ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:13px;font-weight:600;line-height:1.6;}
.badge--soft{background:var(--c-primary-soft);color:#0B9A63;}
.badge--accent{background:var(--c-accent);color:var(--c-ink);}
.badge--alert{background:transparent;border:1px solid var(--c-alert);color:var(--c-alert);}
.badge--dark{background:rgba(255,255,255,.10);color:#fff;}
.badge .dot{width:7px;height:7px;border-radius:50%;background:currentColor;display:inline-block;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-border);
}
.nav-inner{display:flex;align-items:center;gap:28px;height:66px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand__mark{
  width:34px;height:34px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--c-primary),#0FAE6E);
  color:#fff;font-size:16px;font-weight:700;border-radius:10px;
  clip-path:polygon(0 0,100% 0,100% 74%,74% 100%,0 100%);
}
.brand__text{display:flex;flex-direction:column;line-height:1.15;}
.brand__name{font-size:18px;font-weight:700;letter-spacing:.2px;}
.brand__sub{font-size:11px;color:var(--c-text-3);letter-spacing:1px;}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:8px;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);
  padding:6px 0;transition:color .18s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:center;transition:transform .18s ease-out;
}
.nav-link:hover{color:var(--c-text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:38px;padding:0 12px;border-radius:999px;
  background:#F1F3EE;border:1px solid transparent;color:var(--c-text-3);
  transition:border-color .18s ease-out,box-shadow .18s ease-out,background .18s ease-out;
}
.nav-search:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(20,206,134,.16);}
.nav-search input{
  border:0;background:transparent;outline:none;width:150px;color:var(--c-text);font-size:14px;
}
.nav-search input::placeholder{color:var(--c-text-3);}
.kbd{
  font-family:var(--mono);font-size:11px;color:var(--c-text-2);
  background:#fff;border:1px solid var(--c-border);border-radius:6px;padding:2px 6px;
}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-border);border-radius:12px;
  background:#fff;cursor:pointer;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;background:var(--c-ink);border-radius:2px;
  transform:translateX(-50%);transition:transform .18s ease-out,opacity .18s ease-out;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
body.nav-open .nav-toggle span{background:transparent;}
body.nav-open .nav-toggle span::before{transform:translateX(-50%) translateY(6px) rotate(45deg);}
body.nav-open .nav-toggle span::after{transform:translateX(-50%) translateY(-6px) rotate(-45deg);}

/* ---------- breadcrumb / category hero ---------- */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);margin-bottom:18px;flex-wrap:wrap;}
.crumb a{color:var(--c-text-2);transition:color .18s ease-out;}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#C7CBC3;}

.cat-hero{
  position:relative;overflow:hidden;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-border);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 12% 18%,rgba(20,206,134,.09),transparent 42%),
                   radial-gradient(circle at 82% 82%,rgba(242,255,92,.16),transparent 46%);
  pointer-events:none;
}
.cat-hero__inner{
  position:relative;display:grid;grid-template-columns:1.35fr .65fr;
  gap:40px;align-items:center;padding:54px 0 48px;
}
.cat-hero h1{font-size:40px;line-height:1.24;font-weight:700;letter-spacing:-.4px;}
.cat-hero h1 em{font-style:normal;color:var(--c-primary);}
.cat-hero__lead{margin-top:16px;font-size:16px;color:var(--c-text-2);max-width:620px;}
.cat-hero__meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.cat-hero__art{
  height:230px;border-radius:var(--r-lg);
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  clip-path:polygon(0 0,100% 0,100% 78%,78% 100%,0 100%);
  box-shadow:var(--sh-1);
  border:1px solid var(--c-border);
}

/* ---------- tabs ---------- */
.tabs{
  display:flex;gap:10px;overflow-x:auto;padding:14px 0;
  border-bottom:1px solid var(--c-border);background:var(--c-surface);
  scrollbar-width:thin;
}
.tabs::-webkit-scrollbar{height:4px;}
.tabs::-webkit-scrollbar-thumb{background:#D8DCD4;border-radius:4px;}
.tab{
  flex:0 0 auto;padding:9px 18px;border-radius:999px;font-size:14px;font-weight:600;
  color:var(--c-text-2);background:#F2F4EF;border:1px solid transparent;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.tab:hover{color:var(--c-text);border-color:#D8DCD4;}
.tab.is-current{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(20,206,134,.26);}

/* ---------- section ---------- */
.section{padding:var(--section-gap) 0;}
.section--tight{padding:56px 0;}
.section-head{margin-bottom:36px;}
.section-head h2{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.3px;}
.section-head p{margin-top:10px;color:var(--c-text-2);font-size:16px;max-width:720px;}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);
  font-size:12px;letter-spacing:1.6px;color:var(--c-primary);margin-bottom:12px;text-transform:uppercase;
}

/* ---------- stats ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stat{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);
  padding:22px 24px;box-shadow:var(--sh-1);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.stat:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(20,206,134,.3);}
.stat__num{font-family:var(--mono);font-size:30px;font-weight:700;letter-spacing:-.5px;}
.stat__num span{font-size:14px;color:var(--c-text-3);margin-left:6px;font-weight:500;}
.stat__label{margin-top:6px;font-size:14px;color:var(--c-text-2);}
.stat--accent .stat__num{color:var(--c-primary);}

/* ---------- reward rows ---------- */
.reward-list{display:flex;flex-direction:column;gap:20px;}
.reward-row{
  display:grid;grid-template-columns:260px 1fr;gap:24px;align-items:center;
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);
  padding:20px;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.reward-row:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(20,206,134,.3);}
.reward-row__media{
  position:relative;border-radius:var(--r-sm);overflow:hidden;aspect-ratio:16/10;background:var(--c-primary-soft);
}
.reward-row__media img{height:100%;}
.reward-row__tag{position:absolute;top:10px;left:10px;}
.reward-row__body{display:flex;flex-direction:column;gap:10px;min-width:0;}
.reward-row__title{font-size:20px;font-weight:700;line-height:1.4;}
.reward-row__desc{font-size:15px;color:var(--c-text-2);}
.reward-row__facts{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:13px;color:var(--c-text-3);}
.reward-row__facts b{font-family:var(--mono);color:var(--c-text);font-weight:600;font-size:14px;}
.reward-row__foot{display:flex;align-items:center;gap:18px;justify-content:space-between;flex-wrap:wrap;padding-top:4px;}
.reward-row:nth-child(even){grid-template-columns:1fr 260px;}
.reward-row:nth-child(even) .reward-row__media{order:2;}
.reward-row:nth-child(even) .reward-row__body{order:1;}

/* ---------- progress bar ---------- */
.bar{flex:1 1 200px;min-width:160px;}
.bar__track{height:8px;border-radius:4px;background:#EDEFE9;overflow:hidden;}
.bar__fill{height:100%;border-radius:4px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent));}
.bar__meta{display:flex;justify-content:space-between;margin-top:6px;font-size:12px;color:var(--c-text-3);}
.bar__meta b{font-family:var(--mono);color:var(--c-text);font-size:13px;}
.bar--dark .bar__track{background:rgba(255,255,255,.12);}
.bar--dark .bar__meta{color:rgba(255,255,255,.62);}
.bar--dark .bar__meta b{color:#fff;}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative;}
.step{
  position:relative;background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-md);padding:24px;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(20,206,134,.3);}
.step__num{
  font-family:var(--mono);font-size:24px;font-weight:700;color:var(--c-primary);
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);border-radius:12px;
  clip-path:polygon(0 0,100% 0,100% 76%,76% 100%,0 100%);
  margin-bottom:16px;
}
.step h3{font-size:18px;font-weight:700;margin-bottom:8px;}
.step p{font-size:14px;color:var(--c-text-2);}
.steps::after{
  content:"";position:absolute;left:6%;right:6%;top:46px;height:1px;
  border-top:1px dashed #D6DAD2;z-index:-1;
}

/* ---------- notice / two column ---------- */
.split{display:grid;grid-template-columns:1.45fr .85fr;gap:28px;align-items:start;}
.panel{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);
  padding:28px;box-shadow:var(--sh-1);
}
.panel h3{font-size:20px;font-weight:700;margin-bottom:16px;}
.check-list{display:flex;flex-direction:column;gap:14px;}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--c-text-2);line-height:1.8;}
.check-list li::before{
  content:"";flex:0 0 18px;height:18px;margin-top:5px;border-radius:6px;
  background:var(--c-primary-soft);
  background-image:linear-gradient(135deg,var(--c-primary),#0FAE6E);
  clip-path:polygon(0 0,100% 0,100% 74%,74% 100%,0 100%);
}
.panel--dark{
  background:var(--c-ink);color:#fff;border-color:var(--c-ink);
  position:relative;overflow:hidden;
}
.panel--dark::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:16px 16px;opacity:.5;
}
.panel--dark > *{position:relative;}
.panel--dark h3{color:#fff;}
.panel--dark p{color:rgba(255,255,255,.72);font-size:15px;}
.panel--dark .mini-quote{margin-top:18px;font-family:var(--mono);font-size:26px;font-weight:700;color:var(--c-accent);}
.panel--dark .btn{margin-top:20px;}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--c-border);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 2px;font-size:17px;font-weight:600;transition:color .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary);}
.faq-item summary::after{
  content:"+";font-family:var(--mono);font-size:22px;line-height:1;color:var(--c-text-3);
  transition:transform .2s ease-out,color .2s ease-out;flex:0 0 auto;
}
.faq-item[open] summary{color:var(--c-primary);}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--c-primary);}
.faq-item p{padding:0 2px 22px;font-size:15px;line-height:1.8;color:var(--c-text-2);}

/* ---------- related pills + pager ---------- */
.related{display:flex;flex-wrap:wrap;gap:12px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:999px;
  background:var(--c-surface);border:1px solid var(--c-border);font-size:14px;font-weight:600;color:var(--c-text-2);
  transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.pill:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--sh-1);}
.pager{display:flex;align-items:center;gap:10px;margin-top:26px;}
.pager a,.pager span.pg{
  width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:14px;font-weight:600;
  background:var(--c-surface);border:1px solid var(--c-border);color:var(--c-text-2);
  transition:border-color .18s ease-out,color .18s ease-out,background .18s ease-out,transform .18s ease-out;
}
.pager a:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px);}
.pager .is-current{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}

/* ---------- cta strip ---------- */
.cta-strip{
  background:var(--c-ink);border-radius:var(--r-lg);padding:32px 36px;
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  position:relative;overflow:hidden;color:#fff;
}
.cta-strip::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:16px 16px;opacity:.5;
}
.cta-strip > *{position:relative;}
.cta-strip h2{font-size:24px;font-weight:700;}
.cta-strip p{margin-top:8px;font-size:15px;color:rgba(255,255,255,.72);}
.cta-strip__actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:var(--section-gap);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand__name{color:#fff;}
.footer-brand .brand__sub{color:rgba(255,255,255,.5);}
.footer-intro{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:340px;}
.site-footer h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.68);transition:color .18s ease-out;}
.footer-links a:hover{color:var(--c-primary);}
.footer-note{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.45);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{max-width:960px;}
  .nav-search input{width:110px;}
}
@media (max-width:1023px){
  .container{max-width:720px;}
  .nav-links{display:none;}
  .nav-toggle{display:block;}
  .nav-search{display:none;}
  .cat-hero__inner{grid-template-columns:1fr;padding:40px 0 36px;}
  .cat-hero__art{height:180px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .steps::after{display:none;}
  .split{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  :root{--section-gap:64px;}
}
@media (max-width:767px){
  body{font-size:15px;}
  :root{--section-gap:56px;}
  .container{padding:0 18px;}
  .cat-hero h1{font-size:28px;}
  .section-head h2{font-size:24px;}
  .reward-row,
  .reward-row:nth-child(even){grid-template-columns:1fr;}
  .reward-row__media,
  .reward-row:nth-child(even) .reward-row__media{order:0;}
  .reward-row__body,
  .reward-row:nth-child(even) .reward-row__body{order:1;}
  .reward-row__foot{flex-direction:column;align-items:stretch;}
  .reward-row__foot .btn{width:100%;}
  .cta-strip{padding:26px 22px;}
  .cta-strip__actions{width:100%;}
  .cta-strip__actions .btn{flex:1 1 auto;}
  .stat__num{font-size:24px;}
}
@media (max-width:520px){
  .stat-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cat-hero__meta{gap:8px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:480px){
  .cat-hero h1{font-size:26px;}
  .cta-strip__actions{flex-direction:column;}
  .cta-strip__actions .btn{width:100%;}
}

/* ---------- mobile drawer ---------- */
@media (max-width:1023px){
  .nav-links{
    position:fixed;top:66px;left:0;right:0;bottom:0;
    display:flex;flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;padding:24px 24px 120px;z-index:55;
    transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:opacity .18s ease-out,transform .18s ease-out;
    overflow-y:auto;
  }
  body.nav-open .nav-links{opacity:1;transform:translateY(0);pointer-events:auto;}
  .nav-link{font-size:18px;padding:14px 4px;border-bottom:1px solid var(--c-border);}
  .nav-link::after{display:none;}
  .nav-link.is-active{color:var(--c-primary);}
}

/* roulang page: category3 */
:root{
  --c-ink:#14121C;
  --c-ink-2:#1E1B2A;
  --c-primary:#14CE86;
  --c-primary-hover:#0FB775;
  --c-primary-soft:#E4FBF1;
  --c-accent:#F2FF5C;
  --c-alert:#FF6A3D;
  --c-bg:#F7F8F5;
  --c-surface:#FFFFFF;
  --c-border:#E6E8E2;
  --c-text:#14121C;
  --c-text-2:#5C6169;
  --c-text-3:#8A8F98;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,18,28,.06), 0 8px 24px rgba(20,18,28,.06);
  --sh-2:0 2px 4px rgba(20,18,28,.08), 0 16px 32px rgba(20,18,28,.10);
  --t:180ms ease-out;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","JetBrains Mono","Roboto Mono",Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.7;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;width:100%;object-fit:cover;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
input{font-family:inherit;}
:focus-visible{outline:3px solid rgba(20,206,134,.45);outline-offset:2px;border-radius:6px;}

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

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-border);
}
.nav-inner{
  height:66px;
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand__mark{
  width:34px;
  height:34px;
  display:grid;
  place-items:center;
  border-radius:10px;
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,0 100%);
  background:linear-gradient(135deg,#14CE86,#0FAE6E);
  color:#fff;
  font-size:16px;
  font-weight:700;
  line-height:1;
}
.brand__text{display:flex;flex-direction:column;line-height:1.15;}
.brand__name{font-size:18px;font-weight:700;letter-spacing:.2px;}
.brand__sub{font-size:11px;color:var(--c-text-3);letter-spacing:1.5px;}
.nav-links{
  flex:1 1 auto;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:28px;
}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--c-text-2);
  padding:6px 0;
  transition:color var(--t);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:0;
  width:0;
  height:2px;
  background:var(--c-primary);
  border-radius:2px;
  transform:translateX(-50%);
  transition:width var(--t);
}
.nav-link:hover{color:var(--c-text);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{width:100%;}
.nav-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
}
.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  height:38px;
  padding:0 12px;
  border-radius:var(--r-pill);
  background:#F1F3EE;
  border:1px solid transparent;
  color:var(--c-text-3);
  transition:border-color var(--t),background var(--t),box-shadow var(--t);
}
.nav-search:focus-within{
  background:#fff;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(20,206,134,.18);
}
.nav-search input{
  border:none;
  background:transparent;
  outline:none;
  font-size:14px;
  color:var(--c-text);
  width:132px;
}
.nav-search input::placeholder{color:var(--c-text-3);}
.kbd{
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1;
  padding:4px 6px;
  border-radius:6px;
  background:#fff;
  border:1px solid var(--c-border);
  color:var(--c-text-3);
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--c-border);
  background:#fff;
  border-radius:12px;
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;
  width:18px;
  height:2px;
  background:var(--c-text);
  border-radius:2px;
  transform:translateX(-50%);
  transition:var(--t);
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
body.nav-open .nav-toggle span{background:transparent;}
body.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg);}
body.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg);}
.drawer-cta{display:none;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:12px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1.5px solid transparent;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
  white-space:nowrap;
}
.btn--primary{
  background:linear-gradient(135deg,#14CE86,#0FAE6E);
  color:#fff;
  box-shadow:0 8px 18px rgba(20,206,134,.28);
}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(20,206,134,.34);}
.btn--primary:active{transform:translateY(0);}
.btn--outline{
  border-color:var(--c-primary);
  color:var(--c-primary-hover);
  background:transparent;
}
.btn--outline:hover{background:var(--c-primary-soft);}
.btn--ghost{
  border-color:rgba(255,255,255,.42);
  color:#fff;
  background:transparent;
}
.btn--ghost:hover{background:rgba(255,255,255,.12);}
.btn--sm{
  padding:10px 16px;
  font-size:14px;
  border-radius:11px;
}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section--tight{padding:56px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{
  font-size:30px;
  line-height:1.35;
  font-weight:700;
  letter-spacing:.2px;
}
.section-head p{
  margin-top:12px;
  font-size:15px;
  color:var(--c-text-2);
  line-height:1.8;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--c-primary-hover);
  background:var(--c-primary-soft);
  padding:6px 14px;
  border-radius:var(--r-pill);
  margin-bottom:16px;
}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;
  overflow:hidden;
  padding:52px 0 56px;
  background:var(--c-bg);
  border-bottom:1px solid var(--c-border);
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(20,18,28,.07) 1px,transparent 1px);
  background-size:16px 16px;
  pointer-events:none;
}
.cat-hero::after{
  content:"";
  position:absolute;
  top:-120px;
  left:-80px;
  width:420px;
  height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(20,206,134,.13),transparent 68%);
  pointer-events:none;
}
.cat-hero__inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1.35fr 1fr;
  gap:48px;
  align-items:center;
  min-height:264px;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--c-text-3);
  margin-bottom:18px;
}
.breadcrumb a{transition:color var(--t);}
.breadcrumb a:hover{color:var(--c-primary-hover);}
.breadcrumb .current{color:var(--c-text-2);}
.cat-hero h1{
  font-size:40px;
  line-height:1.24;
  font-weight:700;
  letter-spacing:-.4px;
}
.cat-hero__desc{
  margin-top:16px;
  max-width:560px;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text-2);
}
.cat-hero__actions{
  margin-top:28px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.cat-hero__media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  aspect-ratio:16/11;
  border:1px solid var(--c-border);
  box-shadow:var(--sh-1);
  clip-path:polygon(0 0,calc(100% - 30px) 0,100% 30px,100% 100%,0 100%);
}
.cat-hero__media img{height:100%;}
.cat-hero__media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(20,18,28,0) 45%,rgba(20,18,28,.42));
}

/* ============ 子导航 tab ============ */
.subtabs-wrap{
  background:#fff;
  border-bottom:1px solid var(--c-border);
  position:relative;
  z-index:2;
}
.subtabs{
  display:flex;
  align-items:center;
  gap:10px;
  padding:16px 0;
  overflow-x:auto;
  scrollbar-width:none;
}
.subtabs::-webkit-scrollbar{display:none;}
.subtab{
  flex:0 0 auto;
  padding:9px 20px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-border);
  background:#fff;
  font-size:14px;
  font-weight:500;
  color:var(--c-text-2);
  transition:var(--t);
}
.subtab:hover{border-color:rgba(20,206,134,.5);color:var(--c-primary-hover);}
.subtab.is-current{
  background:var(--c-primary);
  border-color:var(--c-primary);
  color:#fff;
  font-weight:600;
  box-shadow:0 8px 18px rgba(20,206,134,.24);
}

/* ============ 两列不等宽布局 ============ */
.split{
  display:grid;
  grid-template-columns:1.42fr 1fr;
  gap:32px;
  align-items:start;
}
.guide-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.guide-card{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.guide-card:hover{
  transform:translateY(-4px);
  border-color:rgba(20,206,134,.3);
  box-shadow:var(--sh-2);
}
.guide-card__media{
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--c-primary-soft);
}
.guide-card__media img{height:100%;transition:transform 400ms ease-out;}
.guide-card:hover .guide-card__media img{transform:scale(1.04);}
.guide-card__body{padding:22px;}
.guide-card__body h3{
  font-size:19px;
  font-weight:600;
  line-height:1.45;
}
.guide-card__body p{
  margin-top:10px;
  font-size:14.5px;
  line-height:1.8;
  color:var(--c-text-2);
}
.card-tag{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  color:var(--c-primary-hover);
  background:var(--c-primary-soft);
  padding:4px 10px;
  border-radius:var(--r-pill);
  margin-bottom:12px;
}

/* ============ 步骤条 ============ */
.steps-card{
  position:sticky;
  top:92px;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--sh-1);
}
.steps-card__head h3{
  font-size:20px;
  font-weight:600;
}
.steps-card__head p{
  margin-top:8px;
  font-size:14px;
  color:var(--c-text-2);
  line-height:1.75;
}
.steps{
  margin-top:24px;
  position:relative;
}
.steps li{
  position:relative;
  padding:0 0 26px 52px;
}
.steps li:last-child{padding-bottom:0;}
.steps li::before{
  content:"";
  position:absolute;
  left:17px;
  top:38px;
  bottom:2px;
  border-left:1px dashed var(--c-border);
}
.steps li:last-child::before{display:none;}
.step-num{
  position:absolute;
  left:0;
  top:0;
  width:36px;
  height:36px;
  display:grid;
  place-items:center;
  border-radius:12px;
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,0 100%);
  background:var(--c-primary-soft);
  color:var(--c-primary-hover);
  font-family:var(--font-mono);
  font-size:14px;
  font-weight:700;
}
.steps li h4{
  font-size:16px;
  font-weight:600;
  line-height:1.5;
}
.steps li p{
  margin-top:6px;
  font-size:14px;
  line-height:1.75;
  color:var(--c-text-2);
}

/* ============ 深色要点板块 ============ */
.ink-band{
  position:relative;
  background:var(--c-ink);
  color:#fff;
  overflow:hidden;
}
.ink-band__bg{
  position:absolute;
  inset:0;
  background-image:url(/assets/images/backpic/back-3.webp);
  background-size:cover;
  background-position:center;
  opacity:.24;
}
.ink-band::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:16px 16px;
  pointer-events:none;
}
.ink-band .container{position:relative;z-index:1;}
.ink-band .section-head h2{color:#fff;}
.ink-band .section-head p{color:rgba(255,255,255,.72);}
.ink-band .eyebrow{
  background:rgba(20,206,134,.16);
  color:#7CF0BF;
}
.tips-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.tip{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-md);
  padding:24px;
  transition:border-color var(--t),transform var(--t),background var(--t);
}
.tip:hover{
  border-color:rgba(20,206,134,.55);
  background:rgba(255,255,255,.08);
  transform:translateY(-3px);
}
.tip__num{
  font-family:var(--font-mono);
  font-size:26px;
  font-weight:700;
  color:var(--c-accent);
  line-height:1;
  letter-spacing:1px;
}
.tip h3{
  margin-top:16px;
  font-size:18px;
  font-weight:600;
  color:#fff;
}
.tip p{
  margin-top:10px;
  font-size:14.5px;
  line-height:1.8;
  color:rgba(255,255,255,.72);
}

/* ============ 分页 ============ */
.pager-block{
  margin-top:36px;
  display:flex;
  align-items:center;
  gap:20px;
  flex-wrap:wrap;
}
.pager-label{
  font-size:14px;
  color:var(--c-text-2);
}
.pager{
  display:flex;
  gap:10px;
}
.pager__btn{
  width:44px;
  height:44px;
  border-radius:50%;
  border:1px solid var(--c-border);
  background:#fff;
  color:var(--c-text-2);
  font-family:var(--font-mono);
  font-size:15px;
  font-weight:600;
  display:grid;
  place-items:center;
  transition:var(--t);
}
.pager__btn:hover{
  border-color:rgba(20,206,134,.5);
  color:var(--c-primary-hover);
  transform:translateY(-2px);
}
.pager__btn.is-current{
  background:var(--c-primary);
  border-color:var(--c-primary);
  color:#fff;
  box-shadow:0 8px 18px rgba(20,206,134,.26);
}

/* ============ FAQ ============ */
.faq{
  max-width:820px;
  margin:0 auto;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:6px 28px;
}
.faq__item{border-bottom:1px solid var(--c-border);}
.faq__item:last-child{border-bottom:none;}
.faq__item summary{
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:22px 0;
  cursor:pointer;
}
.faq__item summary::-webkit-details-marker{display:none;}
.faq__q{
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  transition:color var(--t);
}
.faq__item:hover .faq__q{color:var(--c-primary-hover);}
.faq__icon{
  position:relative;
  flex:0 0 18px;
  width:18px;
  height:18px;
  transition:transform 200ms ease-out;
}
.faq__icon::before,
.faq__icon::after{
  content:"";
  position:absolute;
  background:var(--c-text-2);
  border-radius:2px;
  transition:background var(--t);
}
.faq__icon::before{left:0;top:8px;width:18px;height:2px;}
.faq__icon::after{left:8px;top:0;width:2px;height:18px;}
.faq__item[open] .faq__icon{transform:rotate(45deg);}
.faq__item[open] .faq__icon::before,
.faq__item[open] .faq__icon::after{background:var(--c-primary);}
.faq__item[open] .faq__q{color:var(--c-primary-hover);}
.faq__a{
  padding:0 0 22px;
  max-width:680px;
}
.faq__a p{
  font-size:15px;
  line-height:1.85;
  color:var(--c-text-2);
}
.faq__a p + p{margin-top:10px;}

/* ============ 相关分类胶囊 ============ */
.rel-cats{
  display:flex;
  align-items:center;
  gap:14px;
  flex-wrap:wrap;
  margin-top:40px;
  padding-top:32px;
  border-top:1px solid var(--c-border);
}
.rel-cats__label{
  font-size:14px;
  color:var(--c-text-3);
}
.rel-cat{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 18px;
  border-radius:var(--r-pill);
  background:#fff;
  border:1px solid var(--c-border);
  font-size:14px;
  font-weight:500;
  color:var(--c-text-2);
  transition:var(--t);
}
.rel-cat:hover{
  border-color:rgba(20,206,134,.5);
  color:var(--c-primary-hover);
  transform:translateY(-2px);
  box-shadow:var(--sh-1);
}
.rel-cat svg{transition:transform var(--t);}
.rel-cat:hover svg{transform:translateX(3px);}

/* ============ 窄版 CTA ============ */
.cta-bar{
  padding:0 0 88px;
}
.cta-bar__inner{
  position:relative;
  overflow:hidden;
  background:var(--c-ink);
  border-radius:var(--r-lg);
  padding:38px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  box-shadow:var(--sh-2);
}
.cta-bar__inner::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:16px 16px;
  pointer-events:none;
}
.cta-bar__text{position:relative;z-index:1;}
.cta-bar h2{
  font-size:24px;
  font-weight:700;
  color:#fff;
  line-height:1.4;
}
.cta-bar p{
  margin-top:8px;
  font-size:14.5px;
  color:rgba(255,255,255,.72);
}
.cta-bar__actions{
  position:relative;
  z-index:1;
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-ink);
  color:rgba(255,255,255,.78);
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.9fr 1fr 1fr 1.5fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
}
.site-footer .brand__name{color:#fff;}
.site-footer .brand__sub{color:rgba(255,255,255,.5);}
.footer-intro{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.62);
  max-width:340px;
}
.site-footer h4{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:11px;
}
.footer-links a{
  font-size:14px;
  color:rgba(255,255,255,.66);
  transition:color var(--t);
  width:fit-content;
}
.footer-links a:hover{color:var(--c-primary);}
.footer-note{
  font-size:13.5px;
  line-height:1.9;
  color:rgba(255,255,255,.6);
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:rgba(255,255,255,.5);
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .container{padding:0 20px;}
  .nav-links{
    position:fixed;
    inset:66px 0 0;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
    padding:20px 20px 40px;
    transform:translateX(100%);
    transition:transform 220ms ease-out;
    display:flex;
    overflow-y:auto;
    z-index:70;
  }
  body.nav-open .nav-links{transform:translateX(0);}
  .nav-link{
    font-size:18px;
    padding:16px 4px;
    border-bottom:1px solid var(--c-border);
    color:var(--c-text);
  }
  .nav-link::after{display:none;}
  .nav-link.is-active{color:var(--c-primary);}
  .drawer-cta{display:inline-flex;margin-top:26px;width:100%;}
  .nav-search{display:none;}
  .nav-actions .btn--sm{display:none;}
  .nav-toggle{display:block;}
  .split{grid-template-columns:1fr;gap:36px;}
  .steps-card{position:static;}
  .tips-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}

@media (max-width:768px){
  .section{padding:56px 0;}
  .section--tight{padding:40px 0;}
  .cat-hero{padding:32px 0 40px;}
  .cat-hero__inner{grid-template-columns:1fr;gap:28px;min-height:0;}
  .cat-hero h1{font-size:30px;}
  .cat-hero__desc{font-size:15px;}
  .cat-hero__media{aspect-ratio:16/10;}
  .section-head h2{font-size:24px;}
  .guide-grid{grid-template-columns:1fr;}
  .tips-grid{grid-template-columns:1fr;}
  .cta-bar{padding:0 0 56px;}
  .cta-bar__inner{
    flex-direction:column;
    align-items:flex-start;
    padding:28px 24px;
  }
  .cta-bar h2{font-size:20px;}
  .faq{padding:4px 20px;}
  .faq__q{font-size:16px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding-top:48px;}
}

@media (max-width:520px){
  .container{padding:0 18px;}
  .cat-hero h1{font-size:28px;}
  .btn{width:100%;}
  .cat-hero__actions .btn,
  .cta-bar__actions .btn{width:100%;}
  .cta-bar__actions{width:100%;}
  .pager-block{gap:14px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}