/* roulang page: index */
:root{
  --c-brand-950:#082E2A;
  --c-brand-800:#0F4A41;
  --c-brand-600:#16695B;
  --c-brand-400:#2E9182;
  --c-violet-600:#6D4AE0;
  --c-violet-400:#9A80F0;
  --c-coral-500:#F2704F;
  --c-coral-300:#FFA98F;
  --c-ink:#122220;
  --c-ink-2:#3C4F4B;
  --c-ink-3:#70817C;
  --c-bg:#F7F5F0;
  --c-bg-2:#EFEBE2;
  --c-surface:#FFFFFF;
  --c-line:rgba(18,34,32,.10);

  --grad-brand:linear-gradient(135deg,#0F4A41 0%,#16695B 38%,#6D4AE0 100%);
  --grad-warm:linear-gradient(135deg,#F2704F,#FFA98F);
  --grad-glow:radial-gradient(600px 320px at 78% 18%,rgba(109,74,224,.22),transparent 70%);

  --r-xs:8px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:28px;
  --r-pill:999px;

  --sh-1:0 2px 6px rgba(18,34,32,.06);
  --sh-2:0 10px 24px -8px rgba(18,34,32,.12);
  --sh-3:0 24px 48px -16px rgba(15,74,65,.22);
  --sh-focus:0 0 0 3px rgba(109,74,224,.28);

  --nav-h:72px;
  --sec-y:104px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-brand-600);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-violet-600)}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:none;box-shadow:var(--sh-focus);border-radius:var(--r-xs);
}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
::selection{background:rgba(109,74,224,.18)}

.container{max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-weight:800}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--c-brand-950);
  color:rgba(255,255,255,.82);
  font-size:13px;
  min-height:38px;
}
.topbar__inner{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:38px;
}
.topbar__site{color:rgba(255,255,255,.82);letter-spacing:.02em}
.topbar__site:hover{color:#fff}
.topbar__links{display:flex;align-items:center;gap:20px}
.topbar__links a{color:rgba(255,255,255,.72);font-size:13px}
.topbar__links a:hover{color:#fff}
.topbar__pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 14px;border-radius:var(--r-pill);
  border:1px solid transparent;
  background:linear-gradient(#082E2A,#082E2A) padding-box,var(--grad-warm) border-box;
  color:#FFD9CC !important;
  font-size:12.5px;
}
.topbar__pill:hover{color:#fff !important}

/* ---------- 主导航 ---------- */
.site-nav{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease,backdrop-filter .2s ease;
}
.site-nav.is-stuck{box-shadow:var(--sh-1);backdrop-filter:blur(8px)}
.site-nav__inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:var(--nav-h);
}
.logo{display:inline-flex;align-items:center;gap:10px}
.logo__mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--grad-brand);
  display:grid;place-items:center;
  color:#fff;font-weight:800;font-size:17px;
  box-shadow:var(--sh-2);
  flex:0 0 auto;
}
.logo__text{display:flex;flex-direction:column;line-height:1.16}
.logo__cn{font-size:16.5px;font-weight:800;color:var(--c-ink);letter-spacing:.02em}
.logo__sub{font-size:11.5px;color:var(--c-ink-3);letter-spacing:.14em}
.logo:hover .logo__cn{color:var(--c-brand-600)}

.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu a{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  font-size:15px;color:var(--c-ink-2);
  border-radius:10px;
}
.nav-menu a::after{
  content:"";position:absolute;left:50%;bottom:4px;
  width:0;height:3px;border-radius:3px;background:var(--grad-brand);
  transform:translateX(-50%);
  transition:width .16s ease;
}
.nav-menu a:hover{color:var(--c-brand-600)}
.nav-menu a:hover::after{width:22px}
.nav-menu a.is-active{color:var(--c-brand-600);font-weight:700}
.nav-menu a.is-active::after{width:22px}

.nav-actions{display:flex;align-items:center;gap:14px}
.nav-link-text{font-size:14.5px;color:var(--c-ink-2)}
.nav-link-text:hover{color:var(--c-brand-600)}

.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  align-items:center;justify-content:center;
}
.nav-toggle span{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink-2);
  position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--c-ink-2);
  transition:transform .2s ease;
}
.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:translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg)}

.nav-mask{
  position:fixed;inset:0;background:rgba(8,46,42,.55);
  opacity:0;visibility:hidden;transition:opacity .2s ease;z-index:70;
}
body.nav-open .nav-mask{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(360px,86vw);
  background:var(--c-surface);
  z-index:80;
  transform:translateX(102%);
  transition:transform .2s ease-out;
  padding:24px 22px 32px;
  overflow-y:auto;
  box-shadow:var(--sh-3);
}
body.nav-open .nav-drawer{transform:translateX(0)}
.nav-drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.nav-drawer__close{width:38px;height:38px;border-radius:10px;border:1px solid var(--c-line);font-size:18px;color:var(--c-ink-2);line-height:1}
.nav-drawer__list{display:flex;flex-direction:column;gap:2px;margin-bottom:22px}
.nav-drawer__list a{
  display:block;padding:13px 12px;border-radius:12px;
  color:var(--c-ink-2);font-size:15.5px;
}
.nav-drawer__list a:hover{background:var(--c-bg);color:var(--c-brand-600)}
.nav-drawer__list a.is-active{background:rgba(22,105,91,.08);color:var(--c-brand-600);font-weight:700}
.nav-drawer__foot{border-top:1px solid var(--c-line);padding-top:16px;font-size:13px;color:var(--c-ink-3)}
.nav-drawer__foot a{display:inline-block;margin-top:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);
  font-size:15.5px;font-weight:700;line-height:1;letter-spacing:.01em;
  transition:transform .18s ease,box-shadow .18s ease,background-position .3s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn:disabled,.btn.is-disabled{opacity:.5;cursor:not-allowed}
.btn-primary{
  color:#fff;background-image:var(--grad-brand);
  background-size:170% 170%;background-position:0% 0%;
  box-shadow:var(--sh-2);
}
.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);background-position:65% 45%}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-2)}
.btn-ghost{
  color:var(--c-brand-600);background:var(--c-surface);
  border:1.5px solid var(--c-brand-600);
}
.btn-ghost:hover{color:var(--c-brand-800);background:rgba(22,105,91,.08);border-color:var(--c-brand-800)}
.btn-light{
  color:var(--c-brand-800);background:#fff;box-shadow:var(--sh-2);
}
.btn-light:hover{color:var(--c-brand-950);transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn-sm{padding:10px 18px;font-size:14px}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-brand-600);font-size:14.5px;font-weight:600;
}
.link-arrow::after{content:"→";transition:transform .18s ease}
.link-arrow:hover::after{transform:translateX(3px)}

/* ---------- 标签 / 徽章 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:var(--r-pill);
  background:rgba(22,105,91,.09);
  color:var(--c-brand-800);
  font-size:13.5px;font-weight:600;
}
.eyebrow::before{
  content:"";width:7px;height:7px;border-radius:50%;
  background:var(--grad-warm);flex:0 0 auto;
}
.chip{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(22,105,91,.09);
  color:var(--c-brand-800);
  font-size:12.5px;font-weight:600;white-space:nowrap;
}
.chip--warm{background:rgba(242,112,79,.12);color:#B44126}

.stat{
  display:flex;flex-direction:column;gap:2px;
  min-width:104px;
}
.stat__num{
  font-size:clamp(22px,2.4vw,30px);font-weight:800;line-height:1.15;
  font-variant-numeric:tabular-nums;
  color:var(--c-brand-800);
}
.stat__num i{font-style:normal;font-size:14px;font-weight:700;margin-left:2px;color:var(--c-ink-3)}
.stat__label{font-size:13px;color:var(--c-ink-3)}
.stat--light .stat__num{color:#fff}
.stat--light .stat__label{color:rgba(255,255,255,.76)}
.stat--light .stat__num i{color:rgba(255,255,255,.72)}

.badge-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-2);
  padding:16px 18px;
  display:flex;gap:18px;
}

/* ---------- 板块 ---------- */
.section{padding:var(--sec-y) 0}
.section--tight{padding-top:0}
.section--alt{background:var(--c-bg-2)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-head__text{max-width:680px}
.section-head h2{font-size:clamp(24px,2.8vw,36px);line-height:1.28;font-weight:700}
.section-head .lead{font-size:15.5px;color:var(--c-ink-2);margin-top:12px}
.h-rule{display:block;width:32px;height:4px;border-radius:4px;background:var(--grad-brand);margin-bottom:16px}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background:var(--c-bg);
  padding:72px 0 88px;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;background:var(--grad-glow);pointer-events:none;
}
.hero__grid{
  position:relative;
  display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
}
.hero h1{
  font-size:clamp(30px,4.4vw,52px);
  font-weight:800;line-height:1.18;letter-spacing:.01em;
  margin:20px 0 18px;
}
.hero__lead{font-size:17px;color:var(--c-ink-2);max-width:560px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero__badges{
  display:flex;gap:34px;flex-wrap:wrap;
  margin-top:38px;padding-top:26px;border-top:1px solid var(--c-line);
}
.hero__visual{position:relative}
.hero__media{
  position:relative;margin:0;border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-3);
}
.hero__media img{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--c-bg-2)}
.hero__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(140deg,rgba(15,74,65,.86),rgba(109,74,224,.66));
}
.hero__caption{
  position:absolute;left:24px;bottom:24px;right:24px;
  display:flex;flex-direction:column;gap:6px;color:#fff;z-index:2;
}
.hero__caption span:first-child{font-size:12.5px;letter-spacing:.16em;color:rgba(255,255,255,.78)}
.hero__caption span:last-child{font-size:19px;font-weight:800;letter-spacing:.02em}
.hero__float{
  position:absolute;right:-14px;bottom:-26px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);box-shadow:var(--sh-3);
  padding:18px 22px;display:flex;gap:26px;
}
.hero__float .stat__num{font-size:24px}

/* ---------- 痛点 ---------- */
.pain{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.pain h2{font-size:clamp(24px,2.8vw,36px);line-height:1.28}
.pain__intro{font-size:15.5px;color:var(--c-ink-2);margin-top:16px;max-width:360px}
.pain__list{border-top:1px solid var(--c-line)}
.pain__item{
  display:grid;grid-template-columns:56px 1fr;gap:18px;
  padding:24px 0;border-bottom:1px solid var(--c-line);
}
.pain__idx{
  font-size:15px;font-weight:800;font-variant-numeric:tabular-nums;
  color:var(--c-brand-400);
  position:relative;padding-left:16px;
}
.pain__idx::before{
  content:"";position:absolute;left:0;top:7px;
  width:4px;height:16px;border-radius:4px;background:var(--grad-brand);
}
.pain__item h3{font-size:18px;font-weight:700;margin-bottom:6px}
.pain__item p{font-size:14.5px;color:var(--c-ink-2)}

/* ---------- 流程 / 解决方案 ---------- */
.flow{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.flow--reverse{grid-template-columns:5fr 7fr}
.flow--reverse .flow__media{order:-1}
.panel{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-xl);
  box-shadow:var(--sh-2);
  padding:38px 36px;
}
.panel h3{font-size:20px;font-weight:700;margin-bottom:8px}
.panel__sub{font-size:14.5px;color:var(--c-ink-3);margin-bottom:26px}
.steps{position:relative;padding-left:28px}
.steps::before{
  content:"";position:absolute;left:6px;top:8px;bottom:12px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,#0F4A41,#16695B 42%,#6D4AE0);
}
.step{position:relative;padding-bottom:26px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:-28px;top:6px;
  width:14px;height:14px;border-radius:50%;
  background:var(--c-surface);border:3px solid var(--c-brand-600);
}
.step h4{font-size:16.5px;font-weight:700;margin-bottom:6px}
.step p{font-size:14.5px;color:var(--c-ink-2)}
.flow__media{margin:0}
.flow__media img{
  width:100%;aspect-ratio:16/12;object-fit:cover;
  border-radius:var(--r-lg);box-shadow:var(--sh-3);background:var(--c-bg-2);
}

/* ---------- 数据带 ---------- */
.databand{
  position:relative;overflow:hidden;
  background-image:var(--grad-brand),var(--grad-glow);
  color:#fff;padding:78px 0;
}
.databand::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:
    repeating-linear-gradient(90deg,rgba(255,255,255,.9) 0 1px,transparent 1px 28px),
    repeating-linear-gradient(0deg,rgba(255,255,255,.9) 0 1px,transparent 1px 28px);
}
.databand__inner{position:relative;text-align:center}
.databand h2{color:#fff;font-size:clamp(24px,2.8vw,36px);line-height:1.28}
.databand__sub{color:rgba(255,255,255,.82);font-size:15.5px;margin-top:14px}
.databand__stats{
  display:flex;justify-content:center;gap:56px;flex-wrap:wrap;
  margin-top:44px;padding-top:38px;border-top:1px solid rgba(255,255,255,.2);
}
.databand__stats .stat{align-items:center;min-width:140px}
.databand__stats .stat__num{font-size:clamp(32px,4vw,48px);color:#fff}

/* ---------- 证言 ---------- */
.voices{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.voice{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-xl);box-shadow:var(--sh-2);
  padding:30px 30px 28px;
  position:relative;overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease;
}
.voice::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background:var(--grad-brand);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.voice:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.voice:hover::before{transform:scaleX(1)}
.voice:nth-child(2){margin-top:38px}
.voice__quote{font-size:15.5px;color:var(--c-ink);line-height:1.85}
.voice__who{display:flex;align-items:center;gap:12px;margin-top:22px;padding-top:18px;border-top:1px solid var(--c-line)}
.avatar{
  width:44px;height:44px;border-radius:50%;flex:0 0 auto;
  background:var(--grad-warm);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:16px;
}
.voice__who span{font-size:13.5px;color:var(--c-ink-3)}
.voice__who strong{display:block;font-size:14.5px;color:var(--c-ink)}

/* ---------- 资讯列表 ---------- */
.news-list{border-top:1px solid var(--c-line)}
.news-card{
  display:grid;grid-template-columns:120px 1fr;gap:20px;
  padding:22px 18px;border-bottom:1px solid var(--c-line);
  border-radius:var(--r-md);
  transition:background-color .18s ease;
}
.news-card:hover{background:var(--c-bg)}
.news-card__thumb{
  width:120px;height:84px;border-radius:var(--r-sm);overflow:hidden;
  background:var(--c-bg-2);flex:0 0 auto;
}
.news-card__thumb img{width:100%;height:100%;object-fit:cover}
.news-card__title{font-size:18px;font-weight:700;line-height:1.5;margin:10px 0 8px}
.news-card__title a{color:var(--c-ink)}
.news-card__title a:hover{color:var(--c-brand-600)}
.news-card__desc{font-size:14px;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__meta{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin-top:12px;font-size:13px;color:var(--c-ink-3);
}
.empty-state{
  min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:var(--c-surface);border:1px dashed var(--c-line);border-radius:var(--r-xl);
  text-align:center;padding:40px 24px;
}
.empty-state__icon{
  width:56px;height:56px;border-radius:50%;
  background:var(--c-bg-2);display:grid;place-items:center;
  color:var(--c-ink-3);font-size:22px;font-weight:800;
}
.empty-state p{color:var(--c-ink-3);font-size:14.5px}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq details{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq details:hover{border-color:rgba(22,105,91,.3)}
.faq details[open]{box-shadow:var(--sh-2)}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;
  font-size:17px;font-weight:700;color:var(--c-ink);
}
.faq summary::-webkit-details-marker{display:none}
.faq .icon{
  position:relative;width:20px;height:20px;flex:0 0 auto;
  transition:transform .2s ease;
}
.faq .icon::before,.faq .icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-brand-600);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq .icon::before{width:14px;height:2px}
.faq .icon::after{width:2px;height:14px}
.faq details[open] .icon{transform:rotate(45deg)}
.faq__body{padding:0 24px 22px;font-size:15px;color:var(--c-ink-2);line-height:1.8}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background-image:var(--grad-brand);
  color:#fff;text-align:center;padding:88px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:
    repeating-linear-gradient(90deg,rgba(255,255,255,.9) 0 1px,transparent 1px 30px),
    repeating-linear-gradient(0deg,rgba(255,255,255,.9) 0 1px,transparent 1px 30px);
}
.cta-band__inner{position:relative;max-width:720px;margin:0 auto}
.cta-band h2{color:#fff;font-size:clamp(24px,2.8vw,36px);line-height:1.3}
.cta-band p{color:rgba(255,255,255,.84);font-size:15.5px;margin-top:14px}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;align-items:center;margin-top:32px}
.cta-band .link-arrow{color:#fff}
.cta-band .link-arrow:hover{color:#FFD9CC}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-brand-950);color:rgba(255,255,255,.72);padding:70px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:44px}
.footer-brand .logo__cn{color:#fff}
.footer-brand .logo__sub{color:rgba(255,255,255,.6)}
.footer-note{font-size:13.5px;color:rgba(255,255,255,.66);margin-top:18px;max-width:260px;line-height:1.8}
.site-footer h3{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;letter-spacing:.04em}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px}
.footer-links a:hover{
  color:#fff;
  text-decoration:underline;
  text-underline-offset:3px;
}
.footer-contact{font-size:14px;line-height:2;color:rgba(255,255,255,.72)}
.footer-contact strong{color:#fff;font-weight:700}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1080px}
  :root{--sec-y:88px}
  .hero__grid{gap:40px}
  .databand__stats{gap:40px}
}
@media (max-width:1023px){
  :root{--sec-y:72px;--nav-h:68px}
  .nav-menu,.nav-actions{display:none}
  .nav-toggle{display:flex}
  .hero{padding:56px 0 72px}
  .hero__grid{grid-template-columns:1fr;gap:44px}
  .hero__float{right:16px;bottom:-24px}
  .pain,.flow,.flow--reverse{grid-template-columns:1fr;gap:32px}
  .flow--reverse .flow__media{order:0}
  .voices{grid-template-columns:1fr;gap:18px}
  .voice:nth-child(2){margin-top:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .databand{padding:64px 0}
}
@media (max-width:767px){
  :root{--sec-y:56px}
  .container{padding:0 16px}
  .topbar__links a:nth-child(2),.topbar__links a:nth-child(3){display:none}
  .topbar__inner{gap:12px}
  .hero{padding:40px 0 64px}
  .hero h1{font-size:clamp(28px,7vw,36px)}
  .hero__badges{gap:26px;margin-top:28px;padding-top:20px}
  .hero__float{position:static;margin-top:-38px;width:calc(100% - 32px);margin-left:16px;padding:16px 18px;gap:18px}
  .hero__media img{aspect-ratio:16/11}
  .panel{padding:26px 20px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .news-card{grid-template-columns:1fr;gap:14px;padding:20px 0}
  .news-card__thumb{width:100%;height:170px}
  .news-card__meta{flex-direction:row}
  .databand__stats{display:grid;grid-template-columns:1fr 1fr;gap:26px;text-align:center}
  .databand__stats .stat{min-width:0;align-items:center}
  .cta-band{padding:64px 0}
  .cta-band__actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:479px){
  .topbar__links a:nth-child(1){display:none}
  .topbar__pill{padding:3px 11px;font-size:12px}
  .hero__actions .btn{width:100%}
  .hero__badges{display:grid;grid-template-columns:1fr 1fr;gap:20px}
  .voice{padding:24px 20px}
  .faq summary{padding:17px 18px;font-size:16px}
  .faq__body{padding:0 18px 20px}
  .stat__num{font-size:24px}
}

/* roulang page: category1 */
:root{
  --c-brand-950:#082E2A;
  --c-brand-800:#0F4A41;
  --c-brand-600:#16695B;
  --c-brand-400:#2E9182;
  --c-violet-600:#6D4AE0;
  --c-violet-400:#9A80F0;
  --c-coral-500:#F2704F;
  --c-coral-300:#FFA98F;
  --c-ink:#122220;
  --c-ink-2:#3C4F4B;
  --c-ink-3:#70817C;
  --c-bg:#F7F5F0;
  --c-bg-2:#EFEBE2;
  --c-surface:#FFFFFF;
  --c-line:rgba(18,34,32,.10);
  --grad-brand:linear-gradient(135deg,#0F4A41 0%,#16695B 38%,#6D4AE0 100%);
  --grad-warm:linear-gradient(135deg,#F2704F,#FFA98F);
  --grad-glow:radial-gradient(600px 320px at 78% 18%, rgba(109,74,224,.22), transparent 70%);
  --r-xs:8px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 2px 6px rgba(18,34,32,.06);
  --sh-2:0 10px 24px -8px rgba(18,34,32,.12);
  --sh-3:0 24px 48px -16px rgba(15,74,65,.22);
  --sh-focus:0 0 0 3px rgba(109,74,224,.28);
  --container:1200px;
  --nav-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,box-shadow .18s ease;}
a:hover{color:var(--c-brand-600);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.28;color:var(--c-ink);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:var(--sh-focus);border-radius:6px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.no-scroll{overflow:hidden;}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--c-brand-950);color:rgba(255,255,255,.82);font-size:13px;}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:39px;padding-top:5px;padding-bottom:5px;}
.topbar__domain{color:rgba(255,255,255,.82);letter-spacing:.02em;}
.topbar__domain:hover{color:#fff;}
.topbar__links{display:flex;align-items:center;gap:20px;}
.topbar__links a{color:rgba(255,255,255,.72);}
.topbar__links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.topbar__pill{
  display:inline-flex;align-items:center;
  padding:5px 14px;border-radius:var(--r-pill);
  border:1px solid var(--c-coral-300);
  color:var(--c-coral-300) !important;
  background:rgba(242,112,79,.10);
}
.topbar__pill:hover{background:rgba(242,112,79,.22);text-decoration:none;color:#FFD6C8 !important;}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-1);}
.header__inner{display:flex;align-items:center;gap:24px;min-height:var(--nav-h);}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo__mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--grad-brand);
  color:#fff;font-weight:800;font-size:19px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);
}
.logo__text{display:flex;flex-direction:column;line-height:1.15;}
.logo__cn{font-size:17px;font-weight:800;letter-spacing:.01em;color:var(--c-ink);}
.logo__sub{font-size:11px;color:var(--c-ink-3);letter-spacing:.16em;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.main-nav a{
  position:relative;
  padding:10px 12px;
  font-size:15px;color:var(--c-ink-2);
  border-radius:10px;
}
.main-nav a::after{
  content:"";position:absolute;left:50%;bottom:2px;
  width:0;height:3px;border-radius:3px;
  background:var(--grad-brand);
  transform:translateX(-50%);
  transition:width .16s ease;
}
.main-nav a:hover{color:var(--c-brand-600);background:rgba(22,105,91,.06);}
.main-nav a:hover::after{width:calc(100% - 24px);}
.main-nav a.is-active{color:var(--c-brand-800);font-weight:700;}
.main-nav a.is-active::after{width:calc(100% - 24px);}
.header__actions{display:flex;align-items:center;gap:16px;flex:0 0 auto;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--c-brand-600);}
.link-arrow::after{content:"→";transition:transform .18s ease;}
.link-arrow:hover::after{transform:translateX(3px);}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--c-line);align-items:center;justify-content:center;flex-direction:column;gap:4px;background:#fff;}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink-2);}

/* ============ 移动抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:80;
  background:rgba(8,46,42,.55);
  opacity:0;visibility:hidden;
  transition:opacity .2s ease,visibility .2s ease;
}
.drawer.is-open{opacity:1;visibility:visible;}
.drawer__panel{
  position:absolute;top:0;right:0;
  width:min(340px,86vw);height:100%;
  background:var(--c-surface);
  padding:22px 20px 28px;
  overflow-y:auto;
  transform:translateX(100%);
  transition:transform .2s ease-out;
  display:flex;flex-direction:column;gap:18px;
  box-shadow:var(--sh-3);
}
.drawer.is-open .drawer__panel{transform:translateX(0);}
.drawer__nav{display:flex;flex-direction:column;}
.drawer__nav a{
  padding:14px 12px;font-size:16px;color:var(--c-ink-2);
  border-bottom:1px solid var(--c-line);border-radius:10px;
}
.drawer__nav a.is-active{color:var(--c-brand-800);font-weight:700;background:rgba(22,105,91,.07);}
.drawer__nav a:hover{background:var(--c-bg-2);}
.drawer__domain{font-size:13px;color:var(--c-ink-3);text-align:center;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:15px;line-height:1.2;
  padding:14px 28px;border-radius:var(--r-pill);
  border:1.5px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,background-position .35s ease;
}
.btn--primary{
  background-image:var(--grad-brand);
  background-size:170% 170%;
  background-position:0 0;
  color:#fff;
  box-shadow:var(--sh-2);
}
.btn--primary:hover{transform:translateY(-1px);box-shadow:var(--sh-3);background-position:100% 100%;color:#fff;}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:#fff;color:var(--c-brand-600);border-color:var(--c-brand-600);}
.btn--ghost:hover{background:rgba(22,105,91,.08);border-color:var(--c-brand-800);color:var(--c-brand-800);}
.btn--sm{padding:10px 20px;font-size:14px;}
.btn--block{width:100%;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 通用标签/徽章 ============ */
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:var(--r-pill);
  background:rgba(22,105,91,.10);
  color:var(--c-brand-800);
  font-size:13px;font-weight:700;letter-spacing:.02em;
}
.chip--warm{background:var(--grad-warm);color:#fff;box-shadow:var(--sh-1);}
.badge-row{display:flex;flex-wrap:wrap;gap:14px;}
.stat{
  min-width:140px;flex:1 1 140px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:14px 18px;
  box-shadow:var(--sh-1);
}
.stat__label{display:block;font-size:12px;color:var(--c-ink-3);letter-spacing:.04em;}
.stat__num{
  display:block;
  font-size:clamp(22px,2.4vw,30px);
  font-weight:800;
  font-variant-numeric:tabular-nums;
  color:var(--c-brand-800);
  line-height:1.25;
}
.stat__num small{font-size:13px;font-weight:700;color:var(--c-ink-3);margin-left:4px;}

/* ============ 面包屑 ============ */
.breadcrumb{padding:18px 0 4px;font-size:13px;color:var(--c-ink-3);line-height:1.8;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li::after{content:"/";margin-left:8px;color:var(--c-ink-3);opacity:.6;}
.breadcrumb li:last-child::after{content:"";margin:0;}
.breadcrumb a{color:var(--c-ink-3);}
.breadcrumb a:hover{color:var(--c-brand-600);}
.breadcrumb .current{color:var(--c-ink-2);font-weight:700;}

/* ============ 分类 Hero ============ */
.page-hero{
  position:relative;
  padding:34px 0 60px;
  background:
    var(--grad-glow),
    linear-gradient(180deg,var(--c-bg) 0%,var(--c-bg-2) 100%);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(90deg,rgba(22,105,91,.06) 1px,transparent 1px),linear-gradient(0deg,rgba(22,105,91,.06) 1px,transparent 1px);
  background-size:46px 46px;
  opacity:.35;pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;grid-template-columns:1.15fr .85fr;
  gap:44px;align-items:center;
}
.hero-copy .chip{margin-bottom:18px;}
.hero-copy h1{
  font-size:clamp(30px,4vw,46px);
  font-weight:800;line-height:1.18;letter-spacing:.01em;
  margin-bottom:16px;
}
.hero-sub{font-size:17px;color:var(--c-ink-2);max-width:520px;margin-bottom:26px;}
.hero-media{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  box-shadow:var(--sh-3);
  background:var(--c-bg-2);
  aspect-ratio:16/11;
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media__tag{
  position:absolute;left:16px;bottom:16px;
  background:rgba(8,46,42,.82);
  color:#fff;font-size:13px;font-weight:700;
  padding:8px 14px;border-radius:var(--r-pill);
  backdrop-filter:blur(4px);
}

/* ============ 板块通用 ============ */
.section{padding:88px 0;}
.section--tight{padding:72px 0;}
.section--alt{background:var(--c-bg-2);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:clamp(24px,2.8vw,36px);margin-bottom:14px;position:relative;padding-top:16px;}
.section-head h2::before{
  content:"";position:absolute;top:0;left:0;
  width:32px;height:4px;border-radius:3px;background:var(--grad-brand);
}
.section-head p{font-size:16px;color:var(--c-ink-2);}

/* ============ 交替图文块 ============ */
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;
  gap:52px;align-items:center;
  padding:56px 0;
  border-top:1px solid var(--c-line);
}
.feature-row:first-of-type{border-top:0;padding-top:0;}
.feature-row--reverse .feature-media{order:2;}
.feature-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-2);
  background:var(--c-bg-2);
  aspect-ratio:16/10;
}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.feature-media:hover img{transform:scale(1.03);}
.feature-body{max-width:680px;}
.feature-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;
  background:var(--grad-brand);color:#fff;
  font-weight:800;font-variant-numeric:tabular-nums;
  margin-bottom:16px;box-shadow:var(--sh-2);
}
.feature-body h3{font-size:clamp(20px,2.2vw,24px);font-weight:700;margin-bottom:12px;}
.feature-body p{color:var(--c-ink-2);margin-bottom:16px;}
.check-list li{
  position:relative;padding-left:26px;margin-bottom:10px;
  font-size:15px;color:var(--c-ink-2);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:12px;height:12px;border-radius:4px;
  background:var(--grad-warm);
}

/* ============ 深色速查带 ============ */
.speed-band{
  position:relative;
  background-image:var(--grad-brand);
  color:#fff;
  padding:76px 0;
  overflow:hidden;
}
.speed-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 12% 30%, rgba(255,255,255,.10) 0 2px, transparent 2px),radial-gradient(circle at 62% 76%, rgba(255,255,255,.08) 0 2px, transparent 2px);
  background-size:64px 64px,88px 88px;
  opacity:.5;pointer-events:none;
}
.speed-band .container{position:relative;}
.speed-band h2{color:#fff;font-size:clamp(24px,2.6vw,34px);margin-bottom:12px;}
.speed-band .lead{color:rgba(255,255,255,.76);max-width:640px;margin-bottom:34px;}
.speed-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.speed-card{
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-lg);
  padding:22px 22px 24px;
  transition:transform .2s ease,background-color .2s ease;
}
.speed-card:hover{transform:translateY(-4px);background:rgba(255,255,255,.16);}
.speed-card .tip-label{
  display:inline-block;font-size:12px;letter-spacing:.08em;
  color:var(--c-coral-300);font-weight:700;margin-bottom:10px;
}
.speed-card h3{color:#fff;font-size:18px;margin-bottom:10px;}
.speed-card p{font-size:14px;color:rgba(255,255,255,.78);line-height:1.8;}

/* ============ FAQ ============ */
.faq-wrap{max-width:840px;margin:0 auto;}
.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  margin-bottom:14px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:rgba(22,105,91,.32);box-shadow:var(--sh-1);}
.faq-item[open]{border-color:rgba(22,105,91,.4);box-shadow:var(--sh-2);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;
  font-size:17px;font-weight:700;color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(22,105,91,.10);color:var(--c-brand-600);
  font-size:20px;font-weight:700;line-height:1;
  transition:transform .2s ease,background-color .2s ease,color .2s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--grad-brand);color:#fff;}
.faq-body{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--c-ink-2);}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;
  background-image:var(--grad-brand);
  color:#fff;
  padding:78px 0;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.5) 0 2px,transparent 2px 26px),repeating-linear-gradient(0deg,rgba(255,255,255,.5) 0 2px,transparent 2px 26px);
  opacity:.06;pointer-events:none;
}
.cta-inner{position:relative;max-width:720px;margin:0 auto;text-align:center;}
.cta-inner h2{color:#fff;font-size:clamp(24px,3vw,36px);margin-bottom:14px;}
.cta-inner p{color:rgba(255,255,255,.8);margin-bottom:28px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;align-items:center;}
.btn--onjade{background:#fff;color:var(--c-brand-800);box-shadow:var(--sh-2);}
.btn--onjade:hover{color:var(--c-brand-950);transform:translateY(-1px);box-shadow:var(--sh-3);}
.link-light{color:#fff;font-weight:700;display:inline-flex;align-items:center;gap:6px;}
.link-light::after{content:"→";transition:transform .18s ease;}
.link-light:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.link-light:hover::after{transform:translateX(3px);}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-brand-950);color:rgba(255,255,255,.72);padding:64px 0 26px;font-size:14px;}
.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,.12);}
.footer-brand .logo__cn{color:#fff;}
.footer-brand .logo__sub{color:rgba(255,255,255,.55);}
.footer-note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.62);max-width:240px;}
.footer-grid h3{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-contact{color:rgba(255,255,255,.72);font-size:14px;line-height:1.95;}
.footer-contact strong{color:#fff;font-weight:700;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding-top:22px;font-size:13px;color:rgba(255,255,255,.58);
}
.footer-bottom a{color:rgba(255,255,255,.72);}
.footer-bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--container:1080px;}
  .hero-grid{gap:34px;}
}
@media (max-width:1023px){
  .main-nav,.header__actions .link-arrow{display:none;}
  .header__actions{margin-left:auto;}
  .nav-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-media{aspect-ratio:16/9;}
  .feature-row{grid-template-columns:1fr;gap:30px;padding:44px 0;}
  .feature-row--reverse .feature-media{order:0;}
  .speed-grid{grid-template-columns:1fr;gap:16px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .section{padding:72px 0;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .topbar__links a:not(.topbar__pill):not(:first-child){display:none;}
  .topbar__links{gap:12px;}
  .header__inner{min-height:64px;gap:12px;}
  .header__actions .btn{display:none;}
  .logo__cn{font-size:15px;}
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
  .page-hero{padding:24px 0 44px;}
  .feature-row{gap:22px;padding:36px 0;}
  .cta-band,.speed-band{padding:56px 0;}
  .cta-actions .btn{width:100%;}
  .cta-actions{flex-direction:column;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:479px){
  .badge-row{display:grid;grid-template-columns:1fr 1fr;}
  .stat{min-width:0;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-item summary{padding:17px 16px;font-size:16px;}
  .faq-body{padding:0 16px 18px;}
  .logo__sub{letter-spacing:.1em;}
}

/* roulang page: article */
:root{
  --c-brand-950:#082E2A;
  --c-brand-800:#0F4A41;
  --c-brand-600:#16695B;
  --c-brand-400:#2E9182;
  --c-violet-600:#6D4AE0;
  --c-violet-400:#9A80F0;
  --c-coral-500:#F2704F;
  --c-coral-300:#FFA98F;
  --c-ink:#122220;
  --c-ink-2:#3C4F4B;
  --c-ink-3:#70817C;
  --c-bg:#F7F5F0;
  --c-bg-2:#EFEBE2;
  --c-surface:#FFFFFF;
  --c-line:rgba(18,34,32,.10);
  --grad-brand:linear-gradient(135deg,#0F4A41 0%,#16695B 38%,#6D4AE0 100%);
  --grad-warm:linear-gradient(135deg,#F2704F,#FFA98F);
  --grad-glow:radial-gradient(600px 320px at 78% 18%,rgba(109,74,224,.22),transparent 70%);
  --r-xs:8px;--r-sm:12px;--r-md:16px;--r-lg:22px;--r-xl:28px;--r-pill:999px;
  --sh-1:0 2px 6px rgba(18,34,32,.06);
  --sh-2:0 10px 24px -8px rgba(18,34,32,.12);
  --sh-3:0 24px 48px -16px rgba(15,74,65,.22);
  --sh-focus:0 0 0 3px rgba(109,74,224,.28);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .16s ease,opacity .16s ease}
a:hover{color:var(--c-brand-600)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:0;list-style:none}
:focus-visible{outline:none;box-shadow:var(--sh-focus);border-radius:var(--r-xs)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-weight:800}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--c-brand-950);color:rgba(255,255,255,.82);font-size:13px}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:40px}
.topbar__domain{color:rgba(255,255,255,.82);letter-spacing:.02em;white-space:nowrap}
.topbar__domain:hover{color:#fff}
.topbar__links{display:flex;align-items:center;gap:20px;flex-wrap:nowrap}
.topbar__links a{color:rgba(255,255,255,.82)}
.topbar__links a:hover{color:#fff}
.topbar__pill{
  border:1px solid rgba(255,169,143,.7);
  border-radius:var(--r-pill);
  padding:4px 14px;
  background:rgba(242,112,79,.14);
  color:#FFD9CC !important;
}
.topbar__pill:hover{background:rgba(242,112,79,.28);border-color:#FFA98F}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
}
.site-header.is-stuck{box-shadow:var(--sh-1);backdrop-filter:blur(6px)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.logo{display:inline-flex;align-items:center;gap:10px}
.logo__mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--grad-brand);
  color:#fff;font-weight:800;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);
}
.logo__text{display:flex;flex-direction:column;line-height:1.15}
.logo__cn{font-weight:800;font-size:16px;letter-spacing:.02em;color:var(--c-ink)}
.logo__sub{font-size:11px;color:var(--c-ink-3);letter-spacing:.14em}
.nav__menu{display:flex;align-items:center;gap:28px}
.nav__link{
  position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;
}
.nav__link::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:3px;
  border-radius:2px;background:var(--grad-brand);
  transform:translateX(-50%);
  transition:width .16s ease;
}
.nav__link:hover{color:var(--c-brand-600)}
.nav__link:hover::after{width:100%}
.nav__link.is-active{color:var(--c-brand-600);font-weight:700}
.nav__link.is-active::after{width:100%}
.nav__actions{display:flex;align-items:center;gap:18px}
.nav__text{font-size:14px;color:var(--c-ink-2)}
.nav__text:hover{color:var(--c-brand-600)}
.burger{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--c-line);background:var(--c-surface);
  align-items:center;justify-content:center;cursor:pointer;
}
.burger span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;position:relative}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px;
}
.burger span::before{top:-6px}
.burger span::after{top:6px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;border:1.5px solid transparent;
  cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease;
}
.btn--primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-2)}
.btn--primary:hover{transform:translateY(-1px);box-shadow:var(--sh-3);color:#fff}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{
  background:var(--c-surface);color:var(--c-brand-600);
  border-color:var(--c-brand-600);box-shadow:var(--sh-1);
}
.btn--ghost:hover{background:rgba(22,105,91,.08);border-color:var(--c-brand-800);color:var(--c-brand-800);transform:translateY(-1px)}
.btn--sm{padding:10px 20px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-brand-600);font-weight:700;font-size:14px;
}
.link-arrow::after{content:"→";transition:transform .16s ease}
.link-arrow:hover::after{transform:translateX(3px)}

/* ============ 页面头部 / 面包屑 ============ */
.page-head{
  position:relative;
  padding:40px 0 48px;
  background:
    var(--grad-glow),
    linear-gradient(180deg,var(--c-bg-2) 0%,var(--c-bg) 100%);
  border-bottom:1px solid var(--c-line);
  overflow:hidden;
}
.page-head::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(18,34,32,.06) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;pointer-events:none;
}
.page-head .container{position:relative;z-index:1}
.crumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;line-height:1.8;color:var(--c-ink-3);margin-bottom:20px;
}
.crumb a{color:var(--c-ink-3)}
.crumb a:hover{color:var(--c-brand-600)}
.crumb__sep{color:rgba(112,129,124,.6)}
.crumb__current{
  color:var(--c-ink-2);display:inline-block;max-width:320px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:bottom;
}
.page-head__title{
  font-size:clamp(26px,3.2vw,40px);
  font-weight:800;line-height:1.22;letter-spacing:.01em;
  color:var(--c-ink);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
  max-width:900px;
}
.post-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  margin-top:20px;font-size:13px;color:var(--c-ink-3);
}
.post-meta__dot{color:rgba(112,129,124,.55)}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:var(--r-pill);
  background:rgba(22,105,91,.10);color:var(--c-brand-600);
  font-size:13px;font-weight:700;
}
.chip--warm{background:rgba(242,112,79,.12);color:#C5492A}

/* ============ 文章布局 ============ */
.article-wrap{padding:56px 0 88px}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:40px;align-items:start;
}
.article-main{min-width:0}
.article-cover{
  margin-bottom:32px;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-2);border:1px solid var(--c-line);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--c-bg-2)}
.article-panel{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-xl);box-shadow:var(--sh-2);
  padding:40px;
}
.article-body{
  max-width:760px;font-size:17px;line-height:1.9;color:var(--c-ink);
  word-break:break-word;
}
.article-body > * + *{margin-top:1.2em}
.article-body p{margin:0 0 1.2em}
.article-body > p:first-of-type{font-size:18px;font-weight:600;color:var(--c-ink)}
.article-body h2{
  position:relative;margin:2.2em 0 .8em;padding-top:18px;
  font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.35;color:var(--c-ink);
}
.article-body h2::before{
  content:"";position:absolute;top:0;left:0;width:32px;height:4px;
  border-radius:2px;background:var(--grad-brand);
}
.article-body h3{
  margin:1.8em 0 .6em;padding-left:12px;
  border-left:3px solid var(--c-brand-600);
  font-size:20px;font-weight:700;line-height:1.4;
}
.article-body h4{font-size:17px;font-weight:700;margin:1.4em 0 .5em}
.article-body blockquote{
  margin:1.6em 0;padding:22px;
  background:var(--c-bg);border-left:4px solid var(--c-brand-600);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--c-ink-2);font-style:normal;
}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.2em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:8px 0}
.article-body li::marker{color:var(--c-brand-600)}
.article-body img{border-radius:16px;margin:1.6em auto;box-shadow:var(--sh-1)}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--c-ink-3);text-align:center;margin-top:10px}
.article-body a{color:var(--c-brand-600);border-bottom:1px solid rgba(22,105,91,.35)}
.article-body a:hover{color:var(--c-violet-600);border-color:rgba(109,74,224,.45)}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;border-radius:16px;overflow:hidden}
.article-body thead th{
  background:rgba(22,105,91,.10);color:var(--c-brand-800);
  font-weight:700;text-align:left;padding:12px 14px;white-space:nowrap;
}
.article-body tbody td{padding:12px 14px;border-top:1px solid var(--c-line);color:var(--c-ink-2)}
.article-body tbody tr:nth-child(even){background:rgba(239,235,226,.5)}
.article-body code{
  background:var(--c-bg-2);padding:2px 6px;border-radius:6px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;
}
.article-body pre{
  background:var(--c-bg-2);border-radius:var(--r-md);padding:18px;
  overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body pre code{background:none;padding:0}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:2em 0}

/* ============ 空态 ============ */
.empty-state{
  min-height:280px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:16px;text-align:center;
  background:var(--c-bg-2);border-radius:var(--r-lg);padding:40px 24px;
}
.empty-state__icon{
  width:52px;height:52px;border-radius:50%;
  background:var(--c-surface);color:var(--c-coral-500);
  display:flex;align-items:center;justify-content:center;
  font-size:24px;font-weight:800;box-shadow:var(--sh-1);
}
.empty-state__text{font-size:15px;color:var(--c-ink-2)}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:22px}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);box-shadow:var(--sh-2);padding:24px;
}
.side-card__title{
  display:flex;align-items:center;gap:10px;
  font-size:16px;font-weight:700;color:var(--c-ink);margin-bottom:16px;
}
.side-card__title::before{
  content:"";width:24px;height:4px;border-radius:2px;background:var(--grad-brand);
}
.side-posts li + li{border-top:1px solid var(--c-line)}
.side-posts a{display:block;padding:12px 0;font-size:14px;line-height:1.65;color:var(--c-ink-2)}
.side-posts a:hover{color:var(--c-brand-600)}
.side-posts__date{display:block;font-size:12px;color:var(--c-ink-3);margin-top:6px}
.side-tags{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-block;padding:6px 14px;border-radius:var(--r-pill);
  background:var(--c-bg-2);color:var(--c-ink-2);font-size:13px;font-weight:600;
  transition:background .16s ease,color .16s ease;
}
.tag:hover{background:rgba(109,74,224,.12);color:var(--c-violet-600)}
.side-cta{
  background:var(--grad-brand);color:#fff;border:0;
  border-radius:var(--r-lg);padding:26px;box-shadow:var(--sh-3);
}
.side-cta h3{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:8px}
.side-cta p{font-size:13px;color:rgba(255,255,255,.82);line-height:1.7;margin-bottom:18px}
.side-cta .btn{
  background:#fff;color:var(--c-brand-800);padding:11px 22px;font-size:14px;
}
.side-cta .btn:hover{transform:translateY(-1px);box-shadow:var(--sh-2);color:var(--c-brand-800)}

/* ============ 上下篇 ============ */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:40px}
.post-nav__item{
  display:flex;flex-direction:column;gap:8px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:20px;
  box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease;
  min-width:0;
}
.post-nav__item:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.post-nav__item.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.post-nav__label{font-size:13px;color:var(--c-ink-3)}
.post-nav__title{
  font-size:15px;font-weight:700;color:var(--c-ink);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-nav__item--next{text-align:right}

/* ============ 相关推荐 ============ */
.related{margin-top:64px}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;margin-bottom:26px;
}
.section-head h2{
  position:relative;padding-left:18px;
  font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;
  width:5px;border-radius:3px;background:var(--grad-brand);
}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  position:relative;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-xl);
  box-shadow:var(--sh-2);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease;
  display:flex;flex-direction:column;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background:var(--grad-brand);opacity:0;transition:opacity .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.card:hover::before{opacity:1}
.card__media{aspect-ratio:16/10;overflow:hidden;background:var(--c-bg-2)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.card:hover .card__media img{transform:scale(1.03)}
.card__body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card__title{
  font-size:18px;font-weight:700;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;color:var(--c-ink-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-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-line);
}
.card__date{font-size:13px;color:var(--c-ink-3)}
.back-row{margin-top:40px;display:flex;justify-content:center}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:88px;background:var(--c-brand-950);
  color:rgba(255,255,255,.72);padding:64px 0 28px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
}
.footer-brand .logo__cn{color:#fff}
.footer-brand .logo__sub{color:rgba(255,255,255,.55)}
.footer-note{font-size:13px;margin-top:16px;line-height:1.8;color:rgba(255,255,255,.6)}
.site-footer h3{font-size:15px;font-weight:700;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,.72)}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-contact{font-size:13px;line-height:2;color:rgba(255,255,255,.7)}
.footer-contact strong{color:#fff;font-weight:700}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:rgba(255,255,255,.6);flex-wrap:wrap;
}
.footer-bottom a{color:rgba(255,255,255,.8)}
.footer-bottom a:hover{color:#fff}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{max-width:1080px}
  .article-layout{gap:32px}
}
@media (max-width:1023px){
  .topbar__links a:nth-child(2),.topbar__links a:nth-child(3){display:none}
  .burger{display:inline-flex}
  .nav__menu{
    position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);
    background:var(--c-surface);flex-direction:column;align-items:flex-start;
    gap:6px;padding:88px 26px 32px;box-shadow:var(--sh-3);
    transform:translateX(102%);transition:transform .2s ease-out;z-index:80;
    overflow-y:auto;
  }
  .nav__menu.is-open{transform:translateX(0)}
  .nav__menu .nav__link{width:100%;padding:14px 0;font-size:16px;border-bottom:1px solid var(--c-line)}
  .nav__menu .nav__link::after{display:none}
  .nav__actions .nav__text{display:none}
  .nav-overlay{
    position:fixed;inset:0;background:rgba(8,46,42,.55);
    opacity:0;visibility:hidden;transition:opacity .2s ease;z-index:70;
  }
  .nav-overlay.is-open{opacity:1;visibility:visible}
  .article-layout{grid-template-columns:1fr}
  .article-side{position:static;top:auto}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .article-panel{padding:30px}
  .article-wrap{padding:44px 0 64px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .nav__inner{min-height:64px}
  .page-head{padding:28px 0 34px}
  .crumb__current{max-width:180px}
  .article-panel{padding:22px;border-radius:var(--r-lg)}
  .article-body{font-size:16.5px;line-height:1.88}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .post-nav{grid-template-columns:1fr}
  .post-nav__item--next{text-align:left}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .site-footer{margin-top:64px;padding:48px 0 24px}
}
@media (max-width:479px){
  .topbar__links{gap:10px}
  .topbar__links a:nth-child(3){display:none}
  .logo__sub{display:none}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .btn{width:100%}
  .post-nav__item .btn{width:auto}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
}

/* roulang page: category2 */
:root{
  --c-brand-950:#082E2A;
  --c-brand-800:#0F4A41;
  --c-brand-600:#16695B;
  --c-brand-400:#2E9182;
  --c-violet-600:#6D4AE0;
  --c-violet-400:#9A80F0;
  --c-coral-500:#F2704F;
  --c-coral-300:#FFA98F;
  --c-ink:#122220;
  --c-ink-2:#3C4F4B;
  --c-ink-3:#70817C;
  --c-bg:#F7F5F0;
  --c-bg-2:#EFEBE2;
  --c-surface:#FFFFFF;
  --c-line:rgba(18,34,32,.10);
  --grad-brand:linear-gradient(135deg,#0F4A41 0%,#16695B 38%,#6D4AE0 100%);
  --grad-warm:linear-gradient(135deg,#F2704F,#FFA98F);
  --grad-glow:radial-gradient(600px 320px at 78% 18%, rgba(109,74,224,.22), transparent 70%);
  --r-xs:8px; --r-sm:12px; --r-md:16px; --r-lg:22px; --r-xl:28px; --r-pill:999px;
  --sh-1:0 2px 6px rgba(18,34,32,.06);
  --sh-2:0 10px 24px -8px rgba(18,34,32,.12);
  --sh-3:0 24px 48px -16px rgba(15,74,65,.22);
  --sh-focus:0 0 0 3px rgba(109,74,224,.28);
  --font:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.85;
  color:var(--c-ink);background:var(--c-bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
a:focus-visible,button:focus-visible{outline:none;box-shadow:var(--sh-focus);border-radius:var(--r-xs);}
h1,h2,h3,h4,p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--c-brand-950);color:rgba(255,255,255,.82);font-size:13px;}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:40px;}
.topbar__domain{font-weight:700;letter-spacing:.02em;color:rgba(255,255,255,.9);}
.topbar__domain:hover{color:#fff;}
.topbar__links{display:flex;align-items:center;gap:18px;}
.topbar__links a{color:rgba(255,255,255,.78);}
.topbar__links a:hover{color:#fff;}
.topbar__pill{
  border:1px solid rgba(255,169,143,.7);border-radius:var(--r-pill);
  padding:3px 14px;color:#FFD9CC;
}
.topbar__pill:hover{background:rgba(242,112,79,.18);color:#fff;}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--c-line);backdrop-filter:blur(8px);
  transition:box-shadow .2s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-1);}
.header__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.logo__mark{
  width:40px;height:40px;border-radius:13px;background:var(--grad-brand);
  color:#fff;font-weight:800;font-size:19px;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);
}
.logo__text{display:flex;flex-direction:column;line-height:1.2;}
.logo__cn{font-size:16px;font-weight:800;letter-spacing:.02em;color:var(--c-ink);}
.logo__sub{font-size:11px;color:var(--c-ink-3);letter-spacing:.16em;}
.main-nav{display:flex;align-items:center;gap:28px;}
.main-nav a{
  position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:3px;border-radius:3px;
  background:var(--grad-brand);transition:left .16s ease,right .16s ease;
}
.main-nav a:hover{color:var(--c-brand-600);}
.main-nav a:hover::after{left:0;right:0;}
.main-nav a.is-active{color:var(--c-brand-600);font-weight:700;}
.main-nav a.is-active::after{left:0;right:0;}
.header__actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--c-line);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);position:relative;border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:700;line-height:1;border-radius:var(--r-pill);
  padding:14px 28px;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease;
}
.btn--primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-2);}
.btn--primary:hover{transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:#fff;border:1.5px solid var(--c-brand-600);color:var(--c-brand-600);}
.btn--ghost:hover{background:rgba(22,105,91,.08);border-color:var(--c-brand-800);}
.btn--sm{padding:11px 20px;font-size:14px;}
.btn--light{background:#fff;color:var(--c-brand-800);box-shadow:var(--sh-2);}
.btn--light:hover{transform:translateY(-1px);box-shadow:var(--sh-3);}
.link-arrow{color:var(--c-brand-600);font-weight:700;font-size:14px;display:inline-flex;align-items:center;gap:6px;}
.link-arrow svg{transition:transform .18s ease;}
.link-arrow:hover svg{transform:translateX(3px);}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(8,46,42,.55);opacity:0;pointer-events:none;
  transition:opacity .2s ease-out;z-index:80;
}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,360px);background:#fff;z-index:90;
  transform:translateX(102%);transition:transform .2s ease-out;padding:24px 22px;overflow-y:auto;
  box-shadow:var(--sh-3);
}
body.drawer-open .drawer{transform:translateX(0);}
body.drawer-open .drawer-mask{opacity:1;pointer-events:auto;}
.drawer__close{
  width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--c-line);
  font-size:18px;color:var(--c-ink-2);margin-left:auto;
}
.drawer__head{display:flex;align-items:center;gap:12px;margin-bottom:20px;}
.drawer__nav{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.drawer__nav a{
  padding:12px 14px;border-radius:var(--r-sm);font-size:15px;color:var(--c-ink-2);
}
.drawer__nav a:hover{background:var(--c-bg);color:var(--c-brand-600);}
.drawer__nav a.is-active{background:rgba(22,105,91,.08);color:var(--c-brand-600);font-weight:700;}
.drawer__foot{border-top:1px solid var(--c-line);padding-top:16px;font-size:13px;color:var(--c-ink-3);}
.drawer__foot strong{color:var(--c-ink-2);}

/* ---------- 面包屑 ---------- */
.crumb{padding:22px 0 0;font-size:13px;color:var(--c-ink-3);line-height:1.8;}
.crumb a{color:var(--c-ink-3);}
.crumb a:hover{color:var(--c-brand-600);}
.crumb span.sep{margin:0 8px;color:rgba(112,129,124,.6);}
.crumb .current{color:var(--c-ink-2);}

/* ---------- Hero ---------- */
.hero{position:relative;padding:40px 0 64px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;background:var(--grad-glow);pointer-events:none;
}
.hero__grid{
  position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;
}
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:var(--r-pill);
  background:rgba(22,105,91,.10);color:var(--c-brand-800);font-size:13px;font-weight:700;
}
.chip i{width:7px;height:7px;border-radius:50%;background:var(--c-brand-600);display:block;}
.hero h1{
  margin:20px 0 16px;font-size:clamp(30px,4.2vw,50px);font-weight:800;line-height:1.18;letter-spacing:.01em;
}
.hero h1 em{font-style:normal;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero__lead{font-size:17px;color:var(--c-ink-2);max-width:560px;}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.badges{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.badge{
  flex:1 1 150px;min-width:140px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:14px 16px;box-shadow:var(--sh-1);
}
.badge__label{font-size:12px;color:var(--c-ink-3);display:flex;align-items:center;gap:6px;}
.badge__label::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-coral-500);}
.badge__num{font-size:24px;font-weight:800;color:var(--c-brand-800);line-height:1.3;}
.hero__media{position:relative;border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-3);}
.hero__media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.hero__media::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,74,65,.25),rgba(15,74,65,.72));
}
.hero__float{
  position:absolute;left:18px;right:18px;bottom:18px;z-index:2;background:rgba(255,255,255,.96);
  border-radius:var(--r-lg);padding:16px 18px;display:flex;gap:18px;box-shadow:var(--sh-2);
}
.hero__float div{flex:1;}
.hero__float span{display:block;font-size:12px;color:var(--c-ink-3);}
.hero__float strong{font-size:20px;font-weight:800;color:var(--c-brand-800);}

/* ---------- 通用板块 ---------- */
.section{padding:92px 0;}
.section--tint{background:var(--c-bg-2);}
.section--tight{padding:76px 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{
  font-size:clamp(24px,2.8vw,36px);font-weight:700;line-height:1.28;position:relative;padding-top:18px;
}
.section-head h2::before{
  content:"";position:absolute;top:0;left:0;width:32px;height:4px;border-radius:3px;background:var(--grad-brand);
}
.section-head p{margin-top:14px;font-size:16px;color:var(--c-ink-2);}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}

/* ---------- 准备清单 ---------- */
.prep{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.prep__media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);}
.prep__media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.prep h2{font-size:clamp(24px,2.8vw,34px);font-weight:700;line-height:1.3;position:relative;padding-top:18px;}
.prep h2::before{content:"";position:absolute;top:0;left:0;width:32px;height:4px;border-radius:3px;background:var(--grad-brand);}
.prep__list{margin-top:22px;display:flex;flex-direction:column;gap:14px;}
.prep__list li{
  display:flex;gap:12px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:16px 18px;box-shadow:var(--sh-1);
}
.prep__list b{
  flex:0 0 30px;height:30px;border-radius:10px;background:var(--grad-warm);color:#fff;
  font-size:13px;display:flex;align-items:center;justify-content:center;font-weight:800;
}
.prep__list p{font-size:15px;color:var(--c-ink-2);}

/* ---------- 时间轴 + 锚点目录 ---------- */
.flow{display:grid;grid-template-columns:8fr 4fr;gap:40px;align-items:start;}
.timeline{position:relative;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:11px;top:8px;bottom:8px;width:2px;background:var(--grad-brand);border-radius:2px;
}
.timeline__item{position:relative;margin-bottom:26px;}
.timeline__item:last-child{margin-bottom:0;}
.timeline__dot{
  position:absolute;left:-34px;top:22px;width:24px;height:24px;border-radius:50%;
  background:#fff;border:2px solid var(--c-brand-600);display:flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:800;color:var(--c-brand-800);
}
.timeline__card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:24px 26px;
  box-shadow:var(--sh-1);position:relative;overflow:hidden;transition:transform .2s ease,box-shadow .2s ease;
}
.timeline__card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand);
  transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
}
.timeline__card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);}
.timeline__card:hover::before{transform:scaleX(1);}
.timeline__card h3{font-size:20px;font-weight:700;line-height:1.4;margin-bottom:10px;}
.timeline__card p{font-size:15px;color:var(--c-ink-2);}
.timeline__card ul{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
.timeline__card ul li{
  position:relative;padding-left:20px;font-size:14px;color:var(--c-ink-2);
}
.timeline__card ul li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:3px;background:rgba(22,105,91,.35);
}
.timeline__tip{
  margin-top:16px;background:var(--c-bg);border-left:3px solid var(--c-coral-500);
  border-radius:0 var(--r-sm) var(--r-sm) 0;padding:12px 16px;font-size:14px;color:var(--c-ink-2);
}
.anchor-card{
  position:sticky;top:96px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-2);overflow:hidden;
}
.anchor-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand);}
.anchor-card h2{font-size:17px;font-weight:700;margin-bottom:14px;}
.anchor-card nav{display:flex;flex-direction:column;}
.anchor-card nav a{
  font-size:14px;color:var(--c-ink-2);padding:9px 0 9px 16px;position:relative;border-bottom:1px dashed var(--c-line);
}
.anchor-card nav a:last-of-type{border-bottom:0;}
.anchor-card nav a::before{
  content:"";position:absolute;left:0;top:17px;width:6px;height:6px;border-radius:50%;background:var(--c-brand-400);
}
.anchor-card nav a:hover{color:var(--c-brand-600);}
.anchor-cta{
  margin-top:18px;background:var(--grad-brand);border-radius:var(--r-md);padding:18px;color:#fff;
}
.anchor-cta p{font-size:13px;color:rgba(255,255,255,.86);line-height:1.7;}
.anchor-cta a{
  margin-top:12px;display:inline-flex;align-items:center;gap:6px;background:#fff;color:var(--c-brand-800);
  font-size:13px;font-weight:700;border-radius:var(--r-pill);padding:9px 16px;
}
.anchor-cta a:hover{transform:translateY(-1px);}

/* ---------- 卡点对照 ---------- */
.catch-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.catch-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:24px;
  box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;
}
.catch-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);}
.catch-card__tag{
  display:inline-block;font-size:12px;font-weight:700;color:var(--c-brand-800);
  background:rgba(46,145,130,.14);border-radius:var(--r-pill);padding:4px 12px;
}
.catch-card h3{font-size:18px;font-weight:700;margin:14px 0 8px;}
.catch-card p{font-size:15px;color:var(--c-ink-2);}
.catch-card .fix{
  margin-top:14px;padding-top:14px;border-top:1px dashed var(--c-line);font-size:14px;color:var(--c-ink-2);
}
.catch-card .fix strong{color:var(--c-brand-600);}

/* ---------- 数据带 ---------- */
.stat-band{
  background:var(--grad-brand);color:#fff;padding:76px 0;position:relative;overflow:hidden;
}
.stat-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(600px 320px at 78% 18%, rgba(109,74,224,.22), transparent 70%);
  opacity:.9;
}
.stat-band::after{
  content:"";position:absolute;inset:0;opacity:.06;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.9) 0 2px,transparent 2px 22px),
                   repeating-linear-gradient(0deg,rgba(255,255,255,.9) 0 2px,transparent 2px 22px);
}
.stat-band .container{position:relative;z-index:2;text-align:center;}
.stat-band h2{font-size:clamp(24px,2.8vw,34px);font-weight:700;line-height:1.3;}
.stat-band > .container > p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.84);}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:38px;}
.stat{
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.24);border-radius:var(--r-md);
  padding:20px 16px;
}
.stat span{display:block;font-size:12px;color:rgba(255,255,255,.78);}
.stat strong{display:block;font-size:clamp(32px,4vw,46px);font-weight:800;line-height:1.2;letter-spacing:.01em;}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.faq__item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);box-shadow:var(--sh-1);transition:border-color .2s ease;}
.faq__item:hover{border-color:rgba(22,105,91,.35);}
.faq__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:17px;font-weight:700;text-align:left;color:var(--c-ink);
}
.faq__icon{
  flex:0 0 24px;width:24px;height:24px;border-radius:50%;background:rgba(22,105,91,.10);color:var(--c-brand-600);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;
  transition:transform .2s ease;
}
.faq__item.is-open .faq__icon{transform:rotate(45deg);}
.faq__a{padding:0 22px;max-height:0;overflow:hidden;transition:max-height .26s ease,padding .26s ease;}
.faq__item.is-open .faq__a{max-height:420px;padding:0 22px 20px;}
.faq__a p{font-size:15px;line-height:1.8;color:var(--c-ink-2);padding-top:12px;border-top:1px dashed var(--c-line);}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--grad-brand);color:#fff;
  border-radius:0;padding:80px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.06;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.9) 0 2px,transparent 2px 24px),
                   repeating-linear-gradient(0deg,rgba(255,255,255,.9) 0 2px,transparent 2px 24px);
}
.cta-band__inner{position:relative;z-index:2;text-align:center;max-width:760px;margin:0 auto;}
.cta-band h2{font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.3;}
.cta-band p{margin-top:14px;font-size:16px;color:rgba(255,255,255,.86);}
.cta-band__btns{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;margin-top:30px;}
.cta-band .link-light{color:rgba(255,255,255,.9);font-size:15px;font-weight:700;border-bottom:1px solid rgba(255,255,255,.5);padding-bottom:2px;}
.cta-band .link-light:hover{color:#fff;border-color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-brand-950);color:rgba(255,255,255,.72);padding:66px 0 26px;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .logo__mark{box-shadow:none;}
.footer-brand .logo__cn{color:#fff;}
.footer-brand .logo__sub{color:rgba(255,255,255,.5);}
.footer-note{margin-top:16px;font-size:13px;line-height:1.8;color:rgba(255,255,255,.66);max-width:240px;}
.site-footer h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-contact{font-size:13px;line-height:2;color:rgba(255,255,255,.72);}
.footer-contact strong{color:#fff;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.78);}
.footer-bottom a:hover{color:#fff;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1080px;}
  .flow{grid-template-columns:7fr 5fr;gap:32px;}
}
@media (max-width:1023px){
  .topbar__links a:not(.topbar__pill):nth-child(3){display:none;}
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .header__actions .btn--primary{display:none;}
  .hero__grid{grid-template-columns:1fr;gap:32px;}
  .hero__media img{aspect-ratio:16/10;}
  .prep{grid-template-columns:1fr;gap:28px;}
  .flow{grid-template-columns:1fr;gap:32px;}
  .anchor-card{position:static;}
  .section{padding:72px 0;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .topbar__links a:not(.topbar__pill){display:none;}
  .section{padding:56px 0;}
  .section--tight{padding:56px 0;}
  .hero{padding:28px 0 48px;}
  .hero h1{font-size:clamp(28px,7vw,36px);}
  .badges{gap:12px;}
  .badge{flex:1 1 calc(50% - 6px);min-width:0;}
  .hero__cta .btn{flex:1 1 100%;}
  .timeline{padding-left:28px;}
  .timeline::before{left:8px;}
  .timeline__dot{left:-28px;top:20px;width:20px;height:20px;font-size:10px;}
  .timeline__card{padding:20px;}
  .catch-grid{grid-template-columns:1fr;}
  .stat-band{padding:56px 0;}
  .cta-band{padding:60px 0;}
  .cta-band__btns .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-note{max-width:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:479px){
  .topbar__inner{font-size:12px;}
  .badge__num{font-size:22px;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:12px;}
  .faq__q{font-size:16px;padding:16px 18px;}
  .faq__a{padding:0 18px;}
  .faq__item.is-open .faq__a{padding:0 18px 18px;}
}

/* roulang page: category3 */
:root{
  --c-brand-950:#082E2A;
  --c-brand-800:#0F4A41;
  --c-brand-600:#16695B;
  --c-brand-400:#2E9182;
  --c-violet-600:#6D4AE0;
  --c-violet-400:#9A80F0;
  --c-coral-500:#F2704F;
  --c-coral-300:#FFA98F;
  --c-ink:#122220;
  --c-ink-2:#3C4F4B;
  --c-ink-3:#70817C;
  --c-bg:#F7F5F0;
  --c-bg-2:#EFEBE2;
  --c-surface:#FFFFFF;
  --c-line:rgba(18,34,32,.10);
  --grad-brand:linear-gradient(135deg,#0F4A41 0%,#16695B 38%,#6D4AE0 100%);
  --grad-warm:linear-gradient(135deg,#F2704F,#FFA98F);
  --grad-glow:radial-gradient(600px 320px at 78% 18%, rgba(109,74,224,.22), transparent 70%);
  --r-xs:8px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 2px 6px rgba(18,34,32,.06);
  --sh-2:0 10px 24px -8px rgba(18,34,32,.12);
  --sh-3:0 24px 48px -16px rgba(15,74,65,.22);
  --sh-focus:0 0 0 3px rgba(109,74,224,.28);
  --nav-h:72px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-brand-600);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-brand-800);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:none;box-shadow:var(--sh-focus);border-radius:var(--r-xs);}

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

/* ============ 顶部信息条 ============ */
.topbar{
  background:var(--c-brand-950);
  color:rgba(255,255,255,.82);
  font-size:13px;
  min-height:40px;
  display:flex;
  align-items:center;
}
.topbar__inner{
  display:flex;
  align-items:center;
  gap:20px;
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:6px 24px;
  flex-wrap:nowrap;
}
.topbar__domain{
  color:rgba(255,255,255,.82);
  letter-spacing:.02em;
  white-space:nowrap;
  font-weight:600;
}
.topbar__domain:hover{color:#fff;}
.topbar__links{
  display:flex;
  align-items:center;
  gap:18px;
  margin-left:auto;
  white-space:nowrap;
}
.topbar__links a{color:rgba(255,255,255,.82);}
.topbar__links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.topbar__pill{
  border:1px solid rgba(255,169,143,.65);
  border-radius:var(--r-pill);
  padding:3px 14px;
  color:#FFD9CC !important;
  transition:background .18s ease,border-color .18s ease;
}
.topbar__pill:hover{
  background:rgba(242,112,79,.22);
  border-color:var(--c-coral-300);
  text-decoration:none !important;
}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease,background .2s ease;
}
.site-header.is-stuck{
  box-shadow:var(--sh-1);
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(6px);
}
.nav{
  display:flex;
  align-items:center;
  gap:24px;
  height:var(--nav-h);
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:11px;
  flex:none;
}
.logo__mark{
  width:38px;height:38px;flex:none;
  border-radius:var(--r-sm);
  background:var(--grad-brand);
  color:#fff;
  font-weight:800;
  font-size:18px;
  display:flex;
  align-items:center;
  justify-content:center;
  letter-spacing:0;
  box-shadow:var(--sh-2);
}
.logo__text{display:flex;flex-direction:column;line-height:1.15;}
.logo__cn{
  font-size:17px;
  font-weight:800;
  color:var(--c-ink);
  letter-spacing:.02em;
}
.logo__sub{
  font-size:11.5px;
  color:var(--c-ink-3);
  letter-spacing:.16em;
}
.nav__menu{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav__link{
  position:relative;
  display:inline-block;
  padding:10px 13px;
  font-size:15px;
  color:var(--c-ink-2);
  border-radius:var(--r-xs);
  transition:color .18s ease;
}
.nav__link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:4px;
  width:0;
  height:3px;
  border-radius:2px;
  background:var(--grad-brand);
  transform:translateX(-50%);
  transition:width .16s ease;
}
.nav__link:hover{color:var(--c-brand-600);}
.nav__link:hover::after{width:22px;}
.nav__link.is-active{color:var(--c-brand-600);font-weight:700;}
.nav__link.is-active::after{width:26px;}
.nav__actions{
  display:flex;
  align-items:center;
  gap:14px;
  flex:none;
}
.nav__txt{
  font-size:15px;
  color:var(--c-ink-2);
}
.nav__txt:hover{color:var(--c-brand-600);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:0;
  cursor:pointer;
  font-size:15px;
  font-weight:700;
  padding:13px 26px;
  border-radius:var(--r-pill);
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn--primary{
  background:var(--grad-brand);
  background-size:150% 150%;
  color:#fff;
  box-shadow:var(--sh-2);
}
.btn--primary:hover{
  transform:translateY(-1px);
  box-shadow:var(--sh-3);
  color:#fff;
  background-position:100% 50%;
}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{
  background:var(--c-surface);
  color:var(--c-brand-600);
  box-shadow:inset 0 0 0 1.5px var(--c-brand-600);
}
.btn--ghost:hover{
  background:rgba(22,105,91,.08);
  box-shadow:inset 0 0 0 1.5px var(--c-brand-800);
  color:var(--c-brand-800);
}
.btn--sm{padding:10px 20px;font-size:14px;}
.btn--link{
  padding:0;
  background:none;
  color:var(--c-brand-600);
  font-weight:700;
  border-radius:var(--r-xs);
}
.btn--link .btn__arrow{transition:transform .18s ease;}
.btn--link:hover .btn__arrow{transform:translateX(3px);}
.btn--disabled{opacity:.5;cursor:not-allowed;}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  border-radius:var(--r-sm);
  cursor:pointer;
  padding:0;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--c-ink-2);
  border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
body.drawer-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg);}
body.drawer-open .nav-toggle span:nth-child(2){opacity:0;}
body.drawer-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.drawer{
  position:fixed;
  top:0;right:0;
  width:min(360px,88vw);
  height:100%;
  background:var(--c-surface);
  z-index:90;
  transform:translateX(102%);
  transition:transform .2s ease-out;
  padding:22px 22px 40px;
  overflow-y:auto;
  box-shadow:var(--sh-3);
}
body.drawer-open .drawer{transform:translateX(0);}
.drawer__title{
  font-size:13px;
  letter-spacing:.14em;
  color:var(--c-ink-3);
  margin:20px 0 10px;
}
.drawer__link{
  display:block;
  padding:12px 4px;
  font-size:16px;
  color:var(--c-ink-2);
  border-bottom:1px solid var(--c-line);
}
.drawer__link.is-active{color:var(--c-brand-600);font-weight:700;}
.drawer__foot{
  margin-top:26px;
  font-size:13px;
  color:var(--c-ink-3);
  line-height:1.9;
}
.drawer__foot strong{color:var(--c-ink-2);}
.drawer__cta{margin-top:18px;width:100%;}
.overlay{
  position:fixed;inset:0;
  background:rgba(8,46,42,.55);
  opacity:0;
  visibility:hidden;
  transition:opacity .2s ease,visibility .2s ease;
  z-index:80;
}
body.drawer-open .overlay{opacity:1;visibility:visible;}

/* ============ 面包屑 ============ */
.crumbs{
  font-size:13px;
  color:var(--c-ink-3);
  line-height:1.8;
  padding:22px 0 0;
  display:flex;
  flex-wrap:wrap;
  gap:6px;
}
.crumbs a{color:var(--c-ink-3);}
.crumbs a:hover{color:var(--c-brand-600);}
.crumbs span.sep{color:rgba(112,129,124,.6);}
.crumbs .current{color:var(--c-ink-2);font-weight:600;}

/* ============ 分类 Hero ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  background:
    var(--grad-glow),
    linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 100%);
  padding-bottom:56px;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:1px;
  background:var(--c-line);
}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:40px;
  align-items:center;
  padding-top:34px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:rgba(22,105,91,.10);
  color:var(--c-brand-800);
  font-size:13px;
  font-weight:700;
  letter-spacing:.03em;
}
.chip::before{
  content:"";
  width:7px;height:7px;border-radius:50%;
  background:var(--grad-warm);
}
.hero-title{
  font-size:clamp(30px,4.4vw,52px);
  font-weight:800;
  line-height:1.18;
  letter-spacing:.01em;
  margin:18px 0 14px;
  color:var(--c-ink);
}
.hero-title .hl{
  background:var(--grad-brand);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  font-size:17px;
  line-height:1.85;
  color:var(--c-ink-2);
  max-width:56ch;
}
.hero-badges{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}
.mini-badge{
  display:flex;
  align-items:center;
  gap:9px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:14px;
  padding:9px 15px;
  box-shadow:var(--sh-1);
}
.mini-badge .dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--grad-warm);
  flex:none;
}
.mini-badge .num{
  font-variant-numeric:tabular-nums;
  font-weight:800;
  font-size:19px;
  color:var(--c-brand-800);
  line-height:1;
}
.mini-badge .lbl{
  font-size:12.5px;
  color:var(--c-ink-3);
  line-height:1.4;
}
.hero-visual{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  box-shadow:var(--sh-3);
  min-height:260px;
  background:var(--c-bg-2);
}
.hero-visual img{
  width:100%;
  height:100%;
  min-height:260px;
  max-height:320px;
  object-fit:cover;
}
.hero-visual__tag{
  position:absolute;
  left:18px;bottom:18px;
  background:rgba(255,255,255,.94);
  border-radius:14px;
  padding:10px 16px;
  box-shadow:var(--sh-2);
  font-size:13px;
  color:var(--c-ink-2);
  font-weight:600;
  line-height:1.5;
}
.hero-visual__tag strong{
  display:block;
  font-size:15px;
  color:var(--c-brand-800);
  font-variant-numeric:tabular-nums;
}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--alt{background:var(--c-bg-2);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{
  font-size:clamp(24px,2.8vw,36px);
  font-weight:700;
  line-height:1.28;
  color:var(--c-ink);
  position:relative;
  padding-left:18px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:.55em;
  width:8px;height:32px;
  background:var(--grad-brand);
  border-radius:2px;
}
.section-head p{
  margin-top:16px;
  color:var(--c-ink-2);
  max-width:70ch;
}

/* ============ 对比表 ============ */
.table-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-xl);
  box-shadow:var(--sh-2);
  overflow:hidden;
}
.table-scroll{
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}
.cmp-table{
  min-width:820px;
  font-size:15px;
}
.cmp-table caption{
  text-align:left;
  padding:22px 26px 4px;
  font-size:14px;
  color:var(--c-ink-3);
}
.cmp-table thead th{
  background:rgba(22,105,91,.09);
  color:var(--c-brand-800);
  font-weight:700;
  font-size:14.5px;
  text-align:left;
  padding:16px 22px;
  border-bottom:1px solid var(--c-line);
  white-space:nowrap;
}
.cmp-table thead th:first-child{
  position:sticky;
  left:0;
  z-index:3;
  background:#E7F0ED;
}
.cmp-table tbody td{
  padding:16px 22px;
  border-bottom:1px solid var(--c-line);
  color:var(--c-ink-2);
  line-height:1.75;
  vertical-align:top;
}
.cmp-table tbody tr:nth-child(even) td{background:#FAF8F4;}
.cmp-table tbody td:first-child{
  position:sticky;
  left:0;
  z-index:2;
  background:var(--c-surface);
  font-weight:700;
  color:var(--c-ink);
  white-space:nowrap;
  box-shadow:1px 0 0 var(--c-line);
}
.cmp-table tbody tr:nth-child(even) td:first-child{background:#F4F1EA;}
.cmp-table tbody tr:last-child td{border-bottom:0;}
.cmp-table .cell-tag{
  display:inline-block;
  font-size:12px;
  font-weight:700;
  padding:2px 10px;
  border-radius:var(--r-pill);
  background:rgba(242,112,79,.14);
  color:#B8492C;
  margin-right:6px;
}
.table-note{
  padding:16px 26px 22px;
  font-size:13px;
  color:var(--c-ink-3);
  line-height:1.8;
}

/* ============ 双列对比卡 ============ */
.duo-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.panel{
  position:relative;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-xl);
  box-shadow:var(--sh-2);
  padding:30px 30px 28px;
  overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease;
}
.panel::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:4px;
  background:var(--grad-brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s ease;
}
.panel:hover{transform:translateY(-4px);box-shadow:var(--sh-3);}
.panel:hover::before{transform:scaleX(1);}
.panel__icon{
  width:46px;height:46px;
  border-radius:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(109,74,224,.12);
  color:var(--c-violet-600);
  font-weight:800;
  font-size:15px;
  margin-bottom:16px;
}
.panel h3{
  font-size:21px;
  font-weight:700;
  line-height:1.4;
  margin-bottom:12px;
}
.panel p{color:var(--c-ink-2);font-size:15.5px;}
.panel ul{margin-top:18px;display:grid;gap:10px;}
.panel li{
  position:relative;
  padding-left:24px;
  font-size:15px;
  color:var(--c-ink-2);
  line-height:1.8;
}
.panel li::before{
  content:"";
  position:absolute;
  left:2px;top:.72em;
  width:10px;height:10px;
  border-radius:3px;
  background:var(--grad-brand);
}

/* ============ 要点清单 + 数据徽章 ============ */
.check-grid{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:40px;
  align-items:start;
}
.check-list{display:grid;gap:0;}
.check-item{
  display:grid;
  grid-template-columns:44px minmax(0,1fr);
  gap:18px;
  padding:22px 0;
  border-bottom:1px solid var(--c-line);
}
.check-item:first-child{padding-top:0;}
.check-item:last-child{border-bottom:0;}
.check-item .idx{
  width:44px;height:44px;
  border-radius:50%;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  font-size:14px;
  color:var(--c-brand-600);
  font-variant-numeric:tabular-nums;
  box-shadow:var(--sh-1);
}
.check-item h3{
  font-size:18px;
  font-weight:700;
  line-height:1.45;
  margin-bottom:6px;
}
.check-item p{
  color:var(--c-ink-2);
  font-size:15.5px;
}

.stat-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-xl);
  box-shadow:var(--sh-2);
  padding:28px 26px;
  position:sticky;
  top:calc(var(--nav-h) + 24px);
}
.stat-card h3{
  font-size:16px;
  font-weight:700;
  margin-bottom:18px;
  padding-bottom:14px;
  border-bottom:1px solid var(--c-line);
}
.stat-row{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:14px;
  padding:12px 0;
  border-bottom:1px dashed var(--c-line);
}
.stat-row:last-of-type{border-bottom:0;}
.stat-row .k{
  font-size:14px;
  color:var(--c-ink-3);
}
.stat-row .v{
  font-variant-numeric:tabular-nums;
  font-weight:800;
  font-size:22px;
  color:var(--c-brand-800);
  line-height:1;
}
.stat-card .btn{margin-top:20px;width:100%;}

/* ============ 深色数据带 ============ */
.band{
  position:relative;
  background:var(--grad-brand);
  color:#fff;
  padding:80px 0;
  overflow:hidden;
}
.band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 2px,transparent 2px 12px);
  opacity:.5;
  pointer-events:none;
}
.band__inner{position:relative;text-align:center;}
.band h2{
  font-size:clamp(24px,2.8vw,34px);
  font-weight:700;
  line-height:1.3;
}
.band__sub{
  margin-top:12px;
  color:rgba(255,255,255,.86);
  font-size:15.5px;
}
.badge-grid{
  margin-top:38px;
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;
}
.badge-box{
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);
  border-radius:var(--r-lg);
  padding:22px 16px;
  text-align:center;
}
.badge-box .num{
  font-variant-numeric:tabular-nums;
  font-weight:800;
  font-size:clamp(32px,4vw,44px);
  line-height:1.05;
  display:block;
}
.badge-box .lbl{
  display:block;
  margin-top:8px;
  font-size:13.5px;
  color:rgba(255,255,255,.85);
  line-height:1.6;
}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:16px;
  margin-bottom:14px;
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(22,105,91,.35);box-shadow:var(--sh-2);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  text-align:left;
  background:none;
  border:0;
  cursor:pointer;
  padding:20px 24px;
  font-size:17px;
  font-weight:700;
  color:var(--c-ink);
  line-height:1.55;
}
.faq-icon{
  flex:none;
  width:26px;height:26px;
  border-radius:50%;
  background:rgba(22,105,91,.10);
  color:var(--c-brand-600);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:17px;
  font-weight:700;
  transition:transform .2s ease,background .2s ease;
  line-height:1;
}
.faq-item.is-open .faq-icon{
  transform:rotate(45deg);
  background:rgba(109,74,224,.14);
  color:var(--c-violet-600);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .25s ease;
}
.faq-a__inner{
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-ink-2);
  border-top:1px solid var(--c-line);
  padding-top:14px;
  margin-top:2px;
}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;
  background:var(--grad-brand);
  color:#fff;
  border-radius:var(--r-xl);
  padding:56px 48px;
  overflow:hidden;
  box-shadow:var(--sh-3);
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.06) 0 1px,transparent 1px 16px);
  opacity:.6;
  pointer-events:none;
}
.cta-band__inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{
  font-size:clamp(22px,2.6vw,32px);
  font-weight:700;
  line-height:1.3;
}
.cta-band p{
  margin-top:10px;
  color:rgba(255,255,255,.88);
  font-size:15.5px;
}
.cta-band__actions{
  display:flex;
  align-items:center;
  gap:18px;
  flex-wrap:wrap;
}
.cta-band .btn--primary{
  background:#fff;
  color:var(--c-brand-800);
  box-shadow:var(--sh-2);
}
.cta-band .btn--primary:hover{background:#fff;color:var(--c-brand-950);}
.cta-band .btn--link{color:#fff;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-brand-950);
  color:rgba(255,255,255,.72);
  padding:66px 0 0;
  margin-top:96px;
  font-size:14.5px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand .logo__cn{color:#fff;}
.footer-brand .logo__sub{color:rgba(255,255,255,.6);}
.footer-note{
  margin-top:16px;
  color:rgba(255,255,255,.7);
  line-height:1.85;
  max-width:26ch;
}
.site-footer h3{
  color:#fff;
  font-size:15.5px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-links{display:grid;gap:11px;}
.footer-links a{
  color:rgba(255,255,255,.72);
  font-size:14.5px;
}
.footer-links a:hover{
  color:#fff;
  text-decoration:underline;
  text-underline-offset:3px;
}
.footer-contact{line-height:2;}
.footer-contact strong{color:#fff;font-weight:700;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0 26px;
  font-size:13.5px;
  color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.72);}
.footer-bottom a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{max-width:1080px;}
  .section{padding:80px 0;}
}
@media (max-width:1023px){
  .nav__menu,.nav__actions{display:none;}
  .nav-toggle{display:flex;}
  .nav{justify-content:space-between;gap:16px;}
  .hero-grid{grid-template-columns:1fr;gap:28px;}
  .hero-visual img{min-height:220px;max-height:260px;}
  .check-grid{grid-template-columns:1fr;gap:28px;}
  .stat-card{position:static;}
  .badge-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;}
  .section{padding:72px 0;}
  .duo-grid{grid-template-columns:1fr;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .topbar__links a:not(.topbar__pill){display:none;}
  .topbar__links{gap:0;}
  .topbar__inner{padding:6px 16px;gap:12px;}
  .section,.section--tight{padding:56px 0;}
  .page-hero{padding-bottom:40px;}
  .hero-title{margin-top:14px;}
  .hero-badges{gap:10px;}
  .mini-badge{flex:1 1 calc(50% - 5px);}
  .cta-band{padding:38px 24px;border-radius:var(--r-lg);}
  .cta-band__inner{flex-direction:column;align-items:flex-start;gap:22px;}
  .cta-band__actions{width:100%;}
  .cta-band__actions .btn{width:100%;}
  .band{padding:60px 0;}
  .badge-box{padding:18px 12px;}
  .cmp-table{min-width:720px;}
  .cmp-table thead th,.cmp-table tbody td{padding:14px 16px;}
  .site-footer{margin-top:56px;padding-top:50px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:479px){
  .mini-badge{flex:1 1 100%;}
  .badge-grid{gap:12px;}
  .hero-visual__tag{left:12px;bottom:12px;padding:8px 12px;font-size:12.5px;}
  .check-item{grid-template-columns:38px minmax(0,1fr);gap:14px;}
  .check-item .idx{width:38px;height:38px;font-size:13px;}
  .footer-grid{grid-template-columns:1fr;}
  .btn{width:100%;}
  .nav__actions .btn{width:auto;}
  .faq-q{padding:16px 18px;font-size:16px;}
  .faq-a__inner{padding-left:18px;padding-right:18px;}
}

/* roulang page: category4 */
:root{
  --c-brand-950:#082E2A;
  --c-brand-800:#0F4A41;
  --c-brand-600:#16695B;
  --c-brand-400:#2E9182;
  --c-violet-600:#6D4AE0;
  --c-violet-400:#9A80F0;
  --c-coral-500:#F2704F;
  --c-coral-300:#FFA98F;
  --c-ink:#122220;
  --c-ink-2:#3C4F4B;
  --c-ink-3:#70817C;
  --c-bg:#F7F5F0;
  --c-bg-2:#EFEBE2;
  --c-surface:#FFFFFF;
  --c-line:rgba(18,34,32,.10);
  --grad-brand:linear-gradient(135deg,#0F4A41 0%,#16695B 38%,#6D4AE0 100%);
  --grad-warm:linear-gradient(135deg,#F2704F,#FFA98F);
  --grad-glow:radial-gradient(600px 320px at 78% 18%, rgba(109,74,224,.22), transparent 70%);
  --r-xs:8px; --r-sm:12px; --r-md:16px; --r-lg:22px; --r-xl:28px; --r-pill:999px;
  --sh-1:0 2px 6px rgba(18,34,32,.06);
  --sh-2:0 10px 24px -8px rgba(18,34,32,.12);
  --sh-3:0 24px 48px -16px rgba(15,74,65,.22);
  --sh-focus:0 0 0 3px rgba(109,74,224,.28);
  --font:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);background:var(--c-bg);color:var(--c-ink);
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,opacity .18s ease}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:none;box-shadow:var(--sh-focus);border-radius:var(--r-xs)}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-weight:800}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--c-brand-950);color:rgba(255,255,255,.82);font-size:13px}
.topbar__inner{display:flex;align-items:center;gap:20px;min-height:40px;padding:6px 0;flex-wrap:nowrap}
.topbar__domain{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.82);font-weight:600;letter-spacing:.02em;white-space:nowrap}
.topbar__domain:hover{color:#fff}
.topbar__dot{width:6px;height:6px;border-radius:50%;background:var(--c-coral-300);box-shadow:0 0 0 4px rgba(255,169,143,.18)}
.topbar__links{display:flex;align-items:center;gap:18px;margin-left:auto;flex-wrap:nowrap}
.topbar__links a{color:rgba(255,255,255,.72);white-space:nowrap}
.topbar__links a:hover{color:#fff}
.topbar__pill{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:var(--r-pill);
  border:1px solid rgba(255,169,143,.7);color:#FFD9CC !important;background:rgba(242,112,79,.12);
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.topbar__pill:hover{background:rgba(242,112,79,.28);color:#fff !important;border-color:var(--c-coral-300)}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--c-line);backdrop-filter:blur(8px);
  transition:box-shadow .2s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-1)}
.nav{display:flex;align-items:center;gap:24px;min-height:72px}
.logo{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.logo__mark{
  width:38px;height:38px;border-radius:var(--r-sm);background:var(--grad-brand);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:18px;box-shadow:var(--sh-2);
}
.logo__text{display:flex;flex-direction:column;line-height:1.15}
.logo__cn{font-weight:800;font-size:17px;letter-spacing:.01em;color:var(--c-ink)}
.logo__sub{font-size:11px;color:var(--c-ink-3);letter-spacing:.14em}
.nav__menu{display:flex;align-items:center;gap:6px;margin-left:12px}
.nav__item{position:relative;padding:10px 12px;font-size:15px;color:var(--c-ink-2);border-radius:var(--r-xs)}
.nav__item::after{
  content:"";position:absolute;left:50%;right:50%;bottom:2px;height:3px;border-radius:2px;
  background:var(--grad-brand);transition:left .16s ease,right .16s ease;
}
.nav__item:hover{color:var(--c-brand-600)}
.nav__item:hover::after{left:12px;right:12px}
.nav__item.is-active{color:var(--c-brand-600);font-weight:700}
.nav__item.is-active::after{left:12px;right:12px}
.nav__actions{display:flex;align-items:center;gap:18px;margin-left:auto}
.nav__textlink{font-size:15px;color:var(--c-ink-2)}
.nav__textlink:hover{color:var(--c-brand-600)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:700;padding:14px 28px;border-radius:var(--r-pill);
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-2)}
.btn--primary:hover{transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:var(--c-surface);color:var(--c-brand-600);border:1.5px solid var(--c-brand-600)}
.btn--ghost:hover{background:rgba(22,105,91,.08);border-color:var(--c-brand-800);color:var(--c-brand-800)}
.btn--sm{padding:11px 22px;font-size:14px}
.btn--block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-brand-600);font-weight:700;font-size:14px}
.link-arrow span{transition:transform .18s ease}
.link-arrow:hover span{transform:translateX(3px)}

/* 汉堡与抽屉 */
.nav__toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--c-line);
  background:var(--c-surface);align-items:center;justify-content:center;
}
.nav__toggle i{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;position:relative}
.nav__toggle i::before,.nav__toggle i::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px;
}
.nav__toggle i::before{top:-6px}.nav__toggle i::after{top:6px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(8,46,42,.55);opacity:0;visibility:hidden;
  transition:opacity .2s ease-out,visibility .2s ease-out;z-index:80;
}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,360px);background:var(--c-surface);z-index:90;
  transform:translateX(102%);transition:transform .2s ease-out;padding:22px 20px 32px;overflow-y:auto;
  display:flex;flex-direction:column;gap:6px;box-shadow:var(--sh-3);
}
.drawer.is-open{transform:translateX(0)}
.drawer-mask.is-open{opacity:1;visibility:visible}
body.is-locked{overflow:hidden}
.drawer__head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--c-line);margin-bottom:10px}
.drawer__title{font-weight:800;font-size:16px}
.drawer__close{width:38px;height:38px;border-radius:var(--r-sm);border:1px solid var(--c-line);font-size:18px;line-height:1;display:grid;place-items:center}
.drawer a.drawer__link{padding:13px 12px;border-radius:var(--r-sm);font-size:15px;color:var(--c-ink-2);font-weight:600}
.drawer a.drawer__link:hover{background:var(--c-bg-2);color:var(--c-brand-600)}
.drawer a.drawer__link.is-active{background:rgba(22,105,91,.08);color:var(--c-brand-600)}
.drawer__meta{margin-top:18px;padding-top:16px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-ink-3);line-height:1.9}
.drawer__meta strong{color:var(--c-ink-2)}

/* ============ 面包屑 ============ */
.crumb{padding:20px 0 0;font-size:13px;color:var(--c-ink-3);line-height:1.8}
.crumb ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.crumb li{display:inline-flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:var(--c-ink-3);opacity:.6}
.crumb a{color:var(--c-ink-3)}
.crumb a:hover{color:var(--c-brand-600)}
.crumb li[aria-current] span{color:var(--c-ink-2);max-width:20ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:bottom}

/* ============ 通用板块 ============ */
section{padding:96px 0}
.section--tight{padding:72px 0}
.section__head{max-width:780px}
.section__head--split{max-width:100%;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-size:13px;font-weight:700;color:var(--c-brand-600);
  background:rgba(22,105,91,.09);border-radius:var(--r-pill);padding:6px 14px;margin-bottom:16px;
}
.eyebrow--warm{background:rgba(242,112,79,.12);color:#C64A2C}
h1{font-size:clamp(30px,4.4vw,52px);font-weight:800;line-height:1.18;letter-spacing:.01em}
h2{font-size:clamp(24px,2.8vw,36px);font-weight:700;line-height:1.28}
h3{font-size:20px;font-weight:700;line-height:1.4}
.lead{font-size:17px;color:var(--c-ink-2);line-height:1.85;margin-top:14px}
.h2-line{position:relative;padding-top:18px}
.h2-line::before{content:"";position:absolute;top:0;left:0;width:32px;height:4px;border-radius:2px;background:var(--grad-brand)}
.muted{color:var(--c-ink-3);font-size:14px}

/* ============ 分类 Hero ============ */
.cat-hero{position:relative;padding:40px 0 0}
.cat-hero__panel{
  position:relative;overflow:hidden;border-radius:var(--r-xl);background:var(--c-surface);
  border:1px solid var(--c-line);box-shadow:var(--sh-2);
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
}
.cat-hero__body{padding:52px 48px;position:relative;z-index:2}
.cat-hero__body h1{max-width:15ch}
.cat-hero__body .lead{max-width:52ch}
.cat-hero__figure{position:relative;min-height:300px}
.cat-hero__figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}
.cat-hero__figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(15,74,65,.72) 0%,rgba(22,105,91,.42) 45%,rgba(109,74,224,.38) 100%);
}
.cat-hero__glow{
  position:absolute;inset:0;background:var(--grad-glow);pointer-events:none;
}
.cat-hero__meta{
  position:absolute;left:24px;right:24px;bottom:24px;z-index:3;display:flex;gap:12px;flex-wrap:wrap;
}
.badges{display:flex;gap:14px;flex-wrap:wrap;margin-top:26px}
.badge{
  display:inline-flex;flex-direction:column;gap:2px;padding:12px 18px;border-radius:var(--r-md);
  background:var(--c-bg-2);min-width:132px;
}
.badge--light{background:rgba(255,255,255,.92);box-shadow:var(--sh-2)}
.badge__label{font-size:11px;letter-spacing:.08em;color:var(--c-ink-3)}
.badge__value{font-size:clamp(22px,2.2vw,30px);font-weight:800;font-variant-numeric:tabular-nums;line-height:1.2;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.badge__value--warm{background:var(--grad-warm);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ============ 索引卡片网格 ============ */
.index-section{background:var(--c-bg-2)}
.index-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:40px}
.icard{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-xl);
  overflow:hidden;box-shadow:var(--sh-2);display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease;
}
.icard::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand);
  transform:scaleX(0);transform-origin:left;transition:transform .24s ease;z-index:3;
}
.icard:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.icard:hover::before{transform:scaleX(1)}
.icard__media{position:relative;aspect-ratio:16/10;background:var(--c-bg-2);overflow:hidden}
.icard__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.icard:hover .icard__media img{transform:scale(1.03)}
.icard__chip{
  position:absolute;top:14px;left:14px;z-index:2;font-size:12px;font-weight:700;padding:5px 12px;
  border-radius:var(--r-pill);background:rgba(255,255,255,.94);color:var(--c-brand-600);box-shadow:var(--sh-1);
}
.icard__body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.icard__title{font-size:18px;font-weight:700;line-height:1.45}
.icard__desc{font-size:14px;color:var(--c-ink-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.icard__foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:12px;border-top:1px solid var(--c-line)}
.tagchip{
  font-size:12px;padding:4px 10px;border-radius:var(--r-pill);background:rgba(109,74,224,.10);color:var(--c-violet-600);font-weight:700;
}
.tagchip--warm{background:rgba(242,112,79,.14);color:#C64A2C}
.tagchip--green{background:rgba(22,105,91,.10);color:var(--c-brand-600)}

/* ============ 主题 chips ============ */
.topic-section{background:var(--c-surface)}
.topic-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,7fr);gap:48px;align-items:start;margin-top:36px}
.chip-group{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:var(--c-bg);font-size:14px;color:var(--c-ink-2);font-weight:600;
  transition:border-color .18s ease,background-color .18s ease,color .18s ease;
}
.chip:hover{border-color:var(--c-brand-400);background:rgba(22,105,91,.08);color:var(--c-brand-600)}
.chip__dot{width:6px;height:6px;border-radius:50%;background:var(--c-brand-400)}
.topic-list{border-top:1px solid var(--c-line)}
.topic-list li{
  display:flex;align-items:flex-start;gap:16px;padding:18px 0;border-bottom:1px solid var(--c-line);
  transition:background-color .18s ease;
}
.topic-list li:hover{background:var(--c-bg)}
.topic-list .idx{font-size:13px;font-weight:800;color:var(--c-brand-600);letter-spacing:.06em;min-width:30px;padding-top:2px}
.topic-list .txt strong{display:block;font-size:16px;font-weight:700}
.topic-list .txt span{font-size:14px;color:var(--c-ink-3)}

/* ============ 更新节奏 ============ */
.rhythm{background:var(--grad-brand);color:#fff;position:relative;overflow:hidden}
.rhythm::after{
  content:"";position:absolute;inset:0;opacity:.06;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.9) 0 1px,transparent 1px 22px),
                   repeating-linear-gradient(0deg,rgba(255,255,255,.9) 0 1px,transparent 1px 22px);
}
.rhythm .container{position:relative;z-index:2}
.rhythm__head{max-width:720px;margin:0 auto;text-align:center}
.rhythm__head h2{color:#fff}
.rhythm__head p{color:rgba(255,255,255,.82);margin-top:12px;font-size:16px}
.rhythm__badges{display:flex;justify-content:center;gap:20px;flex-wrap:wrap;margin-top:36px}
.rhythm__badge{
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.20);border-radius:var(--r-md);
  padding:16px 26px;min-width:170px;text-align:center;
}
.rhythm__badge b{display:block;font-size:clamp(28px,3.4vw,40px);font-weight:800;font-variant-numeric:tabular-nums;line-height:1.15;color:#fff}
.rhythm__badge span{font-size:13px;color:rgba(255,255,255,.78)}
.rhythm__steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:48px}
.rstep{
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);border-radius:var(--r-lg);padding:24px;
}
.rstep b{display:block;font-size:16px;font-weight:700;margin-bottom:8px;color:#fff}
.rstep p{font-size:14px;color:rgba(255,255,255,.80);line-height:1.8}

/* ============ FAQ ============ */
.faq-wrap{max-width:840px;margin:40px auto 0;display:grid;gap:14px}
.faq{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq:hover{border-color:rgba(22,105,91,.30);box-shadow:var(--sh-1)}
.faq summary{
  list-style:none;cursor:pointer;padding:20px 24px;font-size:17px;font-weight:700;color:var(--c-ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";font-size:22px;font-weight:400;color:var(--c-brand-600);line-height:1;
  transition:transform .2s ease;flex:0 0 auto;
}
.faq[open] summary::after{transform:rotate(45deg)}
.faq__body{padding:0 24px 22px;font-size:15px;color:var(--c-ink-2);line-height:1.8}

/* ============ CTA ============ */
.cta-band{background:var(--grad-brand);color:#fff;position:relative;overflow:hidden;border-radius:var(--r-xl)}
.cta-band::after{
  content:"";position:absolute;inset:0;opacity:.06;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.9) 0 1px,transparent 1px 20px),
                   repeating-linear-gradient(0deg,rgba(255,255,255,.9) 0 1px,transparent 1px 20px);
}
.cta-band__inner{position:relative;z-index:2;padding:56px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#fff;max-width:18ch}
.cta-band p{color:rgba(255,255,255,.84);margin-top:10px;font-size:16px}
.cta-band__actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.cta-band .btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.72)}
.cta-band .btn--ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff}
.cta-band .btn--primary{background:#fff;color:var(--c-brand-800);box-shadow:var(--sh-3)}
.cta-band .link-arrow{color:rgba(255,255,255,.9)}
.cta-band .link-arrow:hover{color:#fff}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-brand-950);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo__cn{color:#fff}
.footer-brand .logo__sub{color:rgba(255,255,255,.55)}
.footer-note{font-size:13px;color:rgba(255,255,255,.66);margin-top:16px;max-width:24ch}
.site-footer h3{font-size:15px;color:#fff;font-weight:700;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-contact{font-size:14px;line-height:1.95;color:rgba(255,255,255,.72)}
.footer-contact strong{color:#fff}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.14);padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.8)}
.footer-bottom a:hover{color:#fff}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{max-width:1080px}
  .index-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cat-hero__body{padding:44px 38px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav__menu,.nav__actions{display:none}
  .nav__toggle{display:inline-flex;margin-left:auto}
  .index-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .topic-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .rhythm__steps{grid-template-columns:minmax(0,1fr)}
  .cat-hero__panel{grid-template-columns:minmax(0,1fr)}
  .cat-hero__figure{order:-1;min-height:220px}
  .cat-hero__figure img{aspect-ratio:16/9}
  .cat-hero__meta{position:static;padding:16px 20px 0;background:var(--c-surface)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-band__inner{padding:44px 32px}
}
@media (max-width:767px){
  section{padding:56px 0}
  .section--tight{padding:48px 0}
  .container{padding:0 16px}
  .topbar__links a:not(.topbar__pill){display:none}
  .topbar__inner{gap:12px}
  .index-grid{grid-template-columns:minmax(0,1fr)}
  .hero-badges,.badges{gap:10px}
  .badge{flex:1 1 calc(50% - 6px);min-width:0}
  .rhythm__badges{gap:12px}
  .rhythm__badge{flex:1 1 calc(50% - 6px);min-width:0;padding:14px 16px}
  h1{font-size:clamp(28px,7vw,36px)}
  .cat-hero__body{padding:32px 22px}
  .crumb{padding-top:16px}
  .cta-band__inner{padding:36px 22px;flex-direction:column;align-items:flex-start}
  .cta-band__actions{width:100%;flex-direction:column;align-items:stretch}
  .cta-band__actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:479px){
  .container{padding:0 16px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .btn{width:100%}
  .btn--inline{width:auto}
}