/* roulang page: index */
:root{
  --paper:#F7F5F0;
  --paper-2:#EFEBE3;
  --ink:#14161A;
  --ink-2:#4B4F54;
  --line:#DDD7CB;
  --brand:#14665C;
  --brand-deep:#0C4A43;
  --accent:#F0512B;
  --accent-deep:#D8431F;
  --mist:#DCE7E3;
  --white:#FFFFFF;
  --r-card:20px;
  --r-chip:8px;
  --r-img:16px;
  --r-btn:999px;
  --sh-1:0 1px 2px rgba(20,22,26,.05);
  --sh-2:0 18px 40px -24px rgba(20,22,26,.28);
  --nav-h:60px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Inter,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;background:none;border:0;color:inherit}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
::selection{background:var(--mist);color:var(--brand-deep)}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:640px){.container-x{padding:0 32px}}
@media (min-width:1024px){.container-x{padding:0 48px}}
@media (min-width:1280px){.container-x{padding:0 56px}}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,240,.72);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease;
}
.site-header.is-scrolled{background:rgba(247,245,240,.9);border-bottom-color:var(--line)}
.site-header.is-scrolled .nav-inner{height:52px}
.nav-inner{
  height:var(--nav-h);
  display:flex;align-items:center;gap:18px;
  transition:height .28s ease;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:32px;height:32px;border-radius:10px;background:var(--brand-deep);
  display:grid;place-items:center;color:#fff;font-size:14px;font-weight:800;letter-spacing:-.02em;
  flex-shrink:0;
}
.brand-text{font-size:16px;font-weight:800;letter-spacing:-.02em;color:var(--ink);white-space:nowrap}
.nav-links{display:none;align-items:center;gap:22px;margin-left:8px}
@media (min-width:1024px){.nav-links{display:flex}}
.nav-link{
  position:relative;font-size:15px;font-weight:600;color:var(--ink-2);
  padding:6px 0;transition:color .2s ease;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease;
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(.6)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-end{margin-left:auto;display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-search{
  display:none;align-items:center;gap:6px;
  height:38px;padding:0 8px 0 12px;border-radius:999px;
  border:1px solid var(--line);background:transparent;
  transition:border-color .22s ease,background .22s ease;
}
@media (min-width:1024px){.nav-search{display:flex}}
.nav-search input{
  width:0;opacity:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink);
  transition:width .26s ease,opacity .2s ease;
}
.nav-search input::placeholder{color:#9A958C}
.nav-search.is-open{border-color:var(--brand);background:#fff}
.nav-search.is-open input{width:148px;opacity:1}
.icon-btn{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;color:var(--ink-2);
  transition:background .2s ease,color .2s ease;flex-shrink:0;
}
.icon-btn:hover{background:var(--paper-2);color:var(--ink)}
.burger{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--ink);transition:background .2s ease;
}
.burger:hover{background:var(--paper-2)}
@media (min-width:1024px){.burger{display:none}}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,22,26,.5);opacity:0;visibility:hidden;
  transition:opacity .28s ease,visibility .28s ease;z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:290px;max-width:86vw;z-index:95;
  background:var(--paper);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .3s cubic-bezier(.22,.61,.36,1);
  padding:22px 22px 32px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-title{font-size:15px;font-weight:800;color:var(--ink)}
.drawer-nav{display:flex;flex-direction:column;gap:2px}
.drawer-link{
  padding:14px 4px;font-size:16px;font-weight:600;color:var(--ink-2);
  border-bottom:1px solid var(--line);transition:color .2s ease,padding-left .2s ease;
}
.drawer-link:hover,.drawer-link.is-active{color:var(--brand);padding-left:8px}
.drawer-search{display:flex;align-items:center;gap:8px;margin-top:22px;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:12px;background:#fff}
.drawer-search input{border:0;outline:none;background:transparent;width:100%;font-size:15px}
.drawer-cta{margin-top:20px;width:100%}

/* ============ 按钮 / 标签 ============ */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--accent);color:#fff;font-weight:700;font-size:15px;line-height:1;
  border-radius:var(--r-btn);padding:14px 28px;min-height:44px;
  transition:background .2s ease,box-shadow .2s ease,transform .12s ease;
}
.btn-primary:hover{background:var(--accent-deep);box-shadow:0 14px 26px -16px rgba(240,81,43,.9)}
.btn-primary:active{transform:translateY(1px)}
.btn-sm{padding:11px 20px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid var(--ink);background:transparent;color:var(--ink);
  font-weight:600;font-size:15px;border-radius:12px;padding:12px 22px;min-height:44px;
  transition:background .2s ease,transform .12s ease;
}
.btn-ghost:hover{background:var(--paper-2)}
.btn-ghost:active{transform:translateY(1px)}
.link-underline{position:relative;display:inline-block;font-weight:600;color:var(--brand)}
.link-underline::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:60%;
  background:currentColor;transition:width .24s ease;
}
.link-underline:hover::after{width:100%}
.btn-mini{
  display:inline-flex;align-items:center;justify-content:center;
  height:36px;padding:0 16px;border-radius:var(--r-btn);
  border:1px solid var(--line);font-size:13px;font-weight:600;color:var(--brand);
  background:#fff;transition:background .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-mini:hover{background:var(--mist);border-color:var(--brand)}
.chip{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-chip);background:var(--mist);color:var(--brand);
  font-size:13px;font-weight:600;white-space:nowrap;
}
.chip-plain{background:var(--paper-2);color:var(--ink-2)}

/* ============ 区块 ============ */
.section{padding:56px 0}
@media (min-width:640px){.section{padding:72px 0}}
@media (min-width:1024px){.section{padding:96px 0}}
.section-alt{background:var(--paper-2)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:32px}
.section-head h2{
  font-size:28px;font-weight:700;letter-spacing:-.02em;line-height:1.2;color:var(--ink);
  padding-left:14px;position:relative;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--brand);
}
@media (min-width:1024px){.section-head h2{font-size:34px}}
.section-head p{font-size:15px;color:var(--ink-2);margin-top:10px;max-width:520px}
.section-head .head-side{margin-left:auto;display:flex;align-items:center;gap:16px}

/* ============ 首屏 ============ */
.hero{padding-top:40px;padding-bottom:56px}
@media (min-width:1024px){.hero{padding-top:64px;padding-bottom:96px}}
.hero-grid{display:grid;gap:32px;align-items:center}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:55fr 45fr;gap:56px}
}
.hero-copy{order:2}
@media (max-width:1023px){.hero-media{order:1}}
.hero h1{
  font-size:32px;line-height:1.12;font-weight:800;letter-spacing:-.02em;color:var(--ink);
}
@media (min-width:640px){.hero h1{font-size:40px}}
@media (min-width:1024px){.hero h1{font-size:56px;line-height:1.08}}
.hero-sub{margin-top:20px;font-size:17px;color:var(--ink-2);max-width:480px}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;align-items:center;gap:20px}
.hero-stats{
  margin-top:40px;padding-top:28px;border-top:1px solid var(--line);
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
}
.stat-num{font-size:24px;font-weight:800;letter-spacing:-.02em;color:var(--brand-deep)}
@media (min-width:640px){.stat-num{font-size:28px}}
.stat-label{font-size:13px;color:var(--ink-2);margin-top:4px}

.hero-media{
  position:relative;width:100%;aspect-ratio:3/4;border-radius:var(--r-img);
  overflow:hidden;border:1px solid var(--line);background:var(--mist);
  box-shadow:var(--sh-1);
}
@media (max-width:639px){.hero-media{aspect-ratio:9/14}}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media-mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,22,26,0) 42%,rgba(20,22,26,.62) 100%);
}
.play-btn{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:64px;height:64px;border-radius:50%;background:rgba(255,255,255,.94);
  display:grid;place-items:center;color:var(--accent);transition:transform .22s ease;
}
.play-btn:hover{transform:translate(-50%,-50%) scale(1.06)}
.play-ring{
  position:absolute;inset:0;border-radius:50%;border:2px solid rgba(255,255,255,.8);
  animation:pulseRing 1.2s ease-out infinite;
}
@keyframes pulseRing{
  0%{transform:scale(1);opacity:.75}
  100%{transform:scale(1.65);opacity:0}
}
.hero-media-tag{
  position:absolute;right:14px;bottom:14px;
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-chip);background:rgba(20,22,26,.82);color:#fff;
  font-size:12px;font-weight:600;letter-spacing:.04em;
}

/* ============ 片段卡带 ============ */
.clip-track{
  display:flex;gap:20px;overflow-x:auto;padding:6px 0 18px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
  scrollbar-width:thin;scrollbar-color:var(--line) transparent;
}
.clip-track::-webkit-scrollbar{height:6px}
.clip-track::-webkit-scrollbar-thumb{background:var(--line);border-radius:6px}
.clip-card{
  flex:0 0 auto;width:200px;scroll-snap-align:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:12px;transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
@media (min-width:1024px){.clip-card{width:260px}}
.clip-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.clip-card.is-lead{border-color:var(--brand)}
.clip-thumb{
  position:relative;width:100%;aspect-ratio:3/4;border-radius:14px;overflow:hidden;background:var(--mist);
}
.clip-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .26s ease}
.clip-card:hover .clip-thumb img{transform:scale(1.03)}
.duration{
  position:absolute;right:8px;bottom:8px;background:rgba(20,22,26,.86);color:#fff;
  font-size:12px;font-weight:600;padding:2px 8px;border-radius:6px;letter-spacing:.02em;
}
.clip-title{
  margin-top:12px;font-size:17px;font-weight:700;line-height:1.4;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.clip-meta{margin-top:8px;font-size:13px;color:var(--ink-2)}

/* ============ 上手清单 ============ */
.check-list{border-top:1px solid var(--line)}
.check-item{
  display:grid;grid-template-columns:auto 1fr;align-items:center;gap:18px;
  padding:22px 0;border-bottom:1px solid var(--line);min-height:64px;
}
@media (min-width:768px){.check-item{grid-template-columns:auto 1fr auto;gap:32px;padding:26px 0}}
.check-num{
  font-size:36px;font-weight:800;line-height:1;letter-spacing:-.03em;color:#CFC7B8;
  font-variant-numeric:tabular-nums;
}
@media (min-width:1024px){.check-num{font-size:48px}}
.check-body h3{font-size:17px;font-weight:700;color:var(--ink)}
.check-body p{margin-top:6px;font-size:15px;color:var(--ink-2);max-width:640px}
.check-item .btn-mini{grid-column:2;justify-self:start}
@media (min-width:768px){.check-item .btn-mini{grid-column:auto;justify-self:end}}

/* ============ 口碑跑马灯 ============ */
.marquee{overflow:hidden;position:relative;padding:4px 0;mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);-webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.marquee-track{
  display:flex;gap:16px;width:max-content;
  animation:marqueeMove 40s linear infinite;
}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee + .marquee{margin-top:16px}
.marquee--rev .marquee-track{animation-direction:reverse;animation-duration:46s}
@keyframes marqueeMove{
  from{transform:translateX(0)}
  to{transform:translateX(-50%)}
}
.voice-pill{
  display:flex;align-items:center;gap:10px;
  padding:10px 18px 10px 10px;border-radius:999px;
  background:#fff;border:1px solid var(--line);white-space:nowrap;
}
.voice-avatar{
  width:32px;height:32px;border-radius:50%;background:var(--mist);color:var(--brand);
  display:grid;place-items:center;font-size:13px;font-weight:700;flex-shrink:0;
}
.voice-name{font-size:13px;font-weight:700;color:var(--ink)}
.voice-text{font-size:14px;color:var(--ink-2)}

/* ============ 资讯列表 ============ */
.post-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media (min-width:640px){.post-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.post-grid{grid-template-columns:repeat(3,1fr)}}
.post-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px;transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#CFC7B8}
.post-cover{
  position:relative;width:100%;aspect-ratio:4/3;border-radius:14px;overflow:hidden;background:var(--mist);
  margin-bottom:16px;
}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .26s ease}
.post-card:hover .post-cover img{transform:scale(1.03)}
.post-title{
  margin-top:10px;font-size:17px;font-weight:700;line-height:1.45;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-excerpt{
  margin-top:8px;font-size:15px;color:var(--ink-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--ink-2);
}
.list-more{display:flex;justify-content:center;margin-top:40px}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);background:#fff;
  padding:48px 24px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:16px;
}
.empty-icon{
  width:96px;height:96px;border-radius:24px;background:var(--mist);display:grid;place-items:center;color:var(--brand);
}
.empty-state p{font-size:15px;color:var(--ink-2)}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-inner{
  display:grid;gap:32px;align-items:center;
  padding:56px 0;
}
@media (min-width:1024px){
  .cta-inner{grid-template-columns:1fr auto;gap:56px;padding:80px 0}
}
.cta-inner h2{font-size:28px;font-weight:700;letter-spacing:-.02em;line-height:1.25;color:var(--ink)}
@media (min-width:1024px){.cta-inner h2{font-size:36px}}
.cta-inner p{margin-top:14px;font-size:16px;color:var(--ink-2);max-width:560px}
.cta-side{display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.qr-box{
  width:120px;height:120px;border-radius:var(--r-img);background:#fff;
  border:1px dashed var(--line);display:grid;place-items:center;gap:4px;
  color:var(--ink-2);font-size:12px;font-weight:600;flex-shrink:0;
}
.cta-note{margin-top:14px;font-size:13px;color:var(--ink-2)}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);padding:0 18px;transition:background .26s ease}
.faq-item.is-open{background:var(--mist);border-radius:14px;border-bottom-color:transparent}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:700;color:var(--ink);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand)}
.faq-item.is-open .faq-q{color:var(--brand-deep)}
.faq-plus{
  width:26px;height:26px;flex-shrink:0;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;background:#fff;color:var(--brand);
  transition:transform .26s ease,border-color .26s ease;
}
.faq-item.is-open .faq-plus{transform:rotate(45deg);border-color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a-inner{padding:0 0 24px;font-size:16px;color:var(--ink-2);max-width:780px}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-deep);color:#D8E4E0;padding:64px 0 28px}
.footer-grid{display:grid;gap:40px;grid-template-columns:1fr}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand .brand-mark{background:#fff;color:var(--brand-deep)}
.footer-brand .brand-text{color:#fff}
.footer-desc{margin-top:18px;font-size:14px;line-height:1.8;color:#A9C2BC;max-width:320px}
.footer-social{display:flex;gap:10px;margin-top:22px}
.footer-social span{
  width:36px;height:36px;border-radius:12px;border:1px solid rgba(255,255,255,.22);
  display:grid;place-items:center;font-size:12px;color:#CFE0DC;
}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.02em;margin-bottom:16px}
.footer-col a{
  display:block;font-size:14px;color:#A9C2BC;padding:7px 0;
  transition:color .2s ease,padding-left .2s ease;
}
.footer-col a:hover{color:#fff;padding-left:5px}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#8FAAA4;
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease,transform .42s ease}
.reveal.is-in{opacity:1;transform:translateY(0)}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
  .marquee-track{animation:none}
  html{scroll-behavior:auto}
}
@media (max-width:639px){
  .marquee-track{animation-duration:64s}
}

/* roulang page: article */
:root{
  --paper:#F7F5F0;
  --paper-2:#EFEBE3;
  --ink:#14161A;
  --ink-2:#4B4F54;
  --line:#DDD7CB;
  --brand:#14665C;
  --brand-deep:#0C4A43;
  --accent:#F0512B;
  --accent-deep:#D8431F;
  --mist:#DCE7E3;
  --radius-card:20px;
  --radius-chip:8px;
  --radius-btn:999px;
  --shadow-soft:0 1px 2px rgba(20,22,26,.05);
  --shadow-float:0 18px 40px -24px rgba(20,22,26,.28);
  --nav-h:60px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Inter','PingFang SC','HarmonyOS Sans','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer;}
input,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;color:var(--ink);}
p{margin:0;}
ul,ol{margin:0;padding:0;}

.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media(min-width:640px){.container-x{padding-left:32px;padding-right:32px;}}
@media(min-width:1024px){.container-x{padding-left:48px;padding-right:48px;}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,240,.94);
  border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.site-header.is-scrolled{
  background:rgba(247,245,240,.86);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom-color:var(--line);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:18px;
  height:var(--nav-h);
  transition:height .28s ease;
}
.site-header.is-scrolled .nav-inner{height:52px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:var(--brand);color:#fff;font-size:13px;font-weight:700;letter-spacing:.02em;
}
.brand-text{font-size:15px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:none;align-items:center;gap:4px;margin-left:6px;}
.nav-link{
  position:relative;padding:8px 10px;border-radius:10px;
  font-size:14px;font-weight:600;color:var(--ink-2);
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--ink);background:var(--paper-2);}
.nav-link.is-active{color:var(--brand);}
.nav-link.is-active::after{
  content:"";position:absolute;left:10px;right:10px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand);
}
.nav-end{display:flex;align-items:center;gap:10px;margin-left:auto;}
.nav-search{
  display:none;align-items:center;gap:6px;
  border:1px solid var(--line);border-radius:999px;background:#fff;
  padding:5px 6px 5px 14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search.is-open{display:flex;}
.nav-search:focus-within{border-color:var(--brand);}
.nav-search input{
  width:150px;border:none;outline:none;background:transparent;font-size:14px;
}
.nav-search input::placeholder{color:#9a9c9f;}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:999px;color:var(--ink-2);
  transition:background .2s ease,color .2s ease;
}
.icon-btn:hover{background:var(--mist);color:var(--brand);}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:14px 28px;border-radius:var(--radius-btn);
  background:var(--accent);color:#fff;font-weight:700;font-size:15px;
  transition:background .2s ease,box-shadow .2s ease,transform .12s ease;
}
.btn-primary:hover{background:var(--accent-deep);box-shadow:0 12px 26px -14px rgba(240,81,43,.75);}
.btn-primary:active{transform:translateY(1px);}
.btn-primary:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.btn-primary.btn-sm{min-height:40px;padding:11px 20px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:12px 24px;border-radius:12px;
  border:1px solid var(--ink);background:transparent;font-weight:600;font-size:15px;
  transition:background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-ghost:hover{background:var(--paper-2);}
.btn-ghost:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.burger{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  transition:background .2s ease;
}
.burger:hover{background:var(--paper-2);}
@media(min-width:1024px){
  .nav-links{display:flex;}
  .nav-search{display:flex;}
  .burger{display:none;}
}
/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,22,26,.45);
  opacity:0;pointer-events:none;transition:opacity .26s ease;z-index:80;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:290px;max-width:84vw;
  background:var(--paper);z-index:90;padding:22px 20px;
  transform:translateX(100%);transition:transform .28s ease;
  display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-title{font-size:13px;color:var(--ink-2);letter-spacing:.08em;}
.drawer a{
  padding:12px 10px;border-radius:12px;font-weight:600;font-size:15px;
  transition:background .2s ease,color .2s ease;
}
.drawer a:hover{background:var(--paper-2);color:var(--brand);}
.drawer .drawer-sep{height:1px;background:var(--line);margin:10px 0;}

/* ---------- 通用 ---------- */
.section{padding-top:56px;padding-bottom:56px;}
@media(min-width:768px){.section{padding-top:72px;padding-bottom:72px;}}
@media(min-width:1024px){.section{padding-top:96px;padding-bottom:96px;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.06em;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand);}
.h2{font-size:28px;line-height:1.25;}
@media(min-width:1024px){.h2{font-size:34px;}}
.lead{color:var(--ink-2);font-size:16px;line-height:1.8;}
.chip{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--radius-chip);background:var(--mist);color:var(--brand);
  font-size:13px;font-weight:600;white-space:nowrap;
}
.badge-dark{
  display:inline-flex;align-items:center;height:22px;padding:0 8px;border-radius:6px;
  background:rgba(20,22,26,.82);color:#fff;font-size:12px;font-weight:600;
}
.divider{height:1px;background:var(--line);width:100%;}
.link-text{
  position:relative;display:inline-block;font-weight:600;color:var(--brand);
}
.link-text::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:60%;
  background:var(--brand);transition:width .24s ease;
}
.link-text:hover::after{width:100%;}
.link-text:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:3px;}

.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease,transform .42s ease;}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-2);
  padding-top:24px;
}
.crumb .sep{color:#b7b1a4;}
.crumb a:hover{color:var(--brand);}
.crumb .now{color:var(--ink-2);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头部 ---------- */
.article-head{padding-top:26px;padding-bottom:32px;}
.article-head h1{
  font-size:30px;line-height:1.18;font-weight:800;letter-spacing:-.02em;
  margin-top:16px;
}
@media(min-width:768px){.article-head h1{font-size:38px;}}
@media(min-width:1024px){.article-head h1{font-size:44px;max-width:900px;}}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:18px;font-size:13px;color:var(--ink-2);
}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--line);}
.share-set{display:flex;align-items:center;gap:6px;margin-left:auto;}
.share-set button{
  width:34px;height:34px;border-radius:999px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.share-set button:hover{background:var(--mist);color:var(--brand);border-color:var(--brand);}

/* ---------- 正文 ---------- */
.article-shell{display:block;}
.article-body{
  max-width:760px;margin:0 auto;
  font-size:17px;line-height:1.9;color:var(--ink);
}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;padding-left:14px;
  font-size:24px;line-height:1.35;font-weight:700;margin:2.1em 0 .8em;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.36em;width:3px;height:18px;
  border-radius:2px;background:var(--brand);
}
.article-body h3{font-size:19px;font-weight:600;margin:1.6em 0 .6em;}
.article-body h4{font-size:17px;font-weight:600;margin:1.4em 0 .5em;}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.2em;}
.article-body li{margin-bottom:.6em;}
.article-body ul li{list-style:disc;}
.article-body ol li{list-style:decimal;}
.article-body blockquote{
  margin:1.5em 0;padding:16px 20px;
  background:var(--mist);border-left:3px solid var(--brand);border-radius:0 12px 12px 0;
  color:var(--ink);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:16px;margin:1.6em 0 .6em;width:100%;height:auto;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--ink-2);text-align:center;}
.article-body a{color:var(--brand);font-weight:600;border-bottom:1px solid rgba(20,102,92,.35);}
.article-body a:hover{border-bottom-color:var(--brand);}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15.5px;
}
.article-body th{
  background:var(--paper-2);text-align:left;font-weight:700;
  padding:12px 14px;border-bottom:1px solid var(--line);
}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);}
.article-body code{
  background:var(--paper-2);border-radius:6px;padding:2px 6px;font-size:14.5px;
}
.article-body hr{border:none;height:1px;background:var(--line);margin:2.4em 0;}

/* 空态 */
.empty-state{
  max-width:640px;margin:0 auto;padding:44px 24px;text-align:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
}
.empty-ic{
  width:96px;height:96px;border-radius:24px;background:var(--mist);
  display:flex;align-items:center;justify-content:center;margin:0 auto 18px;color:var(--brand);
}
.empty-state p{color:var(--ink-2);font-size:15px;margin-bottom:20px;}

/* ---------- 相关推荐卡片 ---------- */
.card-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media(min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr);}}
.post-card{
  display:flex;flex-direction:column;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  transition:transform .26s ease-out,box-shadow .26s ease-out,border-color .26s ease-out;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-float);border-color:#cdc6b8;}
.post-thumb{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--mist);}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .26s ease-out;}
.post-card:hover .post-thumb img{transform:scale(1.03);}
.post-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-title{
  font-size:17px;font-weight:700;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-excerpt{
  font-size:14px;color:var(--ink-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-2);
}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-inner{
  display:flex;flex-direction:column;gap:26px;
  padding-top:48px;padding-bottom:48px;
}
@media(min-width:1024px){
  .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;padding-top:64px;padding-bottom:64px;}
}
.qr-box{
  width:120px;height:120px;border-radius:16px;background:var(--mist);
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  color:var(--brand);font-size:12px;text-align:center;line-height:1.4;
}

/* ---------- FAQ ---------- */
.faq-item{border:1px solid var(--line);border-radius:16px;background:#fff;margin-bottom:12px;overflow:hidden;transition:background .26s ease,border-color .26s ease;}
.faq-item.is-open{background:var(--mist);border-color:#c8dbd5;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:16px;font-weight:600;
}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:-2px;}
.faq-plus{
  flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .26s ease;
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
}
.faq-plus::before{left:0;top:10px;width:22px;height:2px;}
.faq-plus::after{left:10px;top:0;width:2px;height:22px;}
.faq-item.is-open .faq-plus{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .26s ease;
}
.faq-a-inner{padding:0 20px 20px;color:var(--ink-2);font-size:15px;line-height:1.8;}

/* ---------- Footer ---------- */
.site-footer{background:var(--brand-deep);color:#e7efec;padding-top:56px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;padding-bottom:40px;}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.site-footer .brand-mark{background:rgba(255,255,255,.14);color:#fff;}
.site-footer .brand-text{color:#fff;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(231,239,236,.78);max-width:320px;}
.footer-social{display:flex;gap:8px;margin-top:18px;}
.footer-social span{
  width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.1);
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;color:#fff;
}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:14px;letter-spacing:.02em;}
.footer-col a{
  display:block;font-size:14px;color:rgba(231,239,236,.76);padding:6px 0;
  transition:color .2s ease,transform .2s ease;
}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:20px 0 26px;
  display:flex;flex-direction:column;gap:8px;font-size:13px;color:rgba(231,239,236,.66);
}
@media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}}

@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
    --paper:#F7F5F0;
    --paper-2:#EFEBE3;
    --ink:#14161A;
    --ink-2:#4B4F54;
    --line:#DDD7CB;
    --brand:#14665C;
    --brand-deep:#0C4A43;
    --accent:#F0512B;
    --accent-press:#D8431F;
    --mist:#DCE7E3;
    --r-card:20px;
    --r-chip:8px;
    --r-img:16px;
    --sh-soft:0 1px 2px rgba(20,22,26,.05);
    --sh-float:0 18px 40px -24px rgba(20,22,26,.28);
    --nav-h:60px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:'PingFang SC','HarmonyOS Sans','Microsoft YaHei',system-ui,Inter,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
  h1,h2,h3,h4,p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

  .container-x{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }
  @media (min-width:768px){ .container-x{padding-left:32px;padding-right:32px;} }
  @media (min-width:1280px){ .container-x{padding-left:48px;padding-right:48px;} }

  /* ------- 导航 ------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(247,245,240,.94);
    border-bottom:1px solid transparent;
    transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
  }
  .site-header.is-scrolled{
    background:rgba(247,245,240,.86);
    backdrop-filter:blur(8px);
    -webkit-backdrop-filter:blur(8px);
    border-bottom-color:var(--line);
    box-shadow:var(--sh-soft);
  }
  .nav-inner{
    display:flex;
    align-items:center;
    gap:18px;
    height:var(--nav-h);
    transition:height .3s ease;
  }
  .site-header.is-scrolled .nav-inner{ height:52px; }
  .brand{
    display:flex;
    align-items:center;
    gap:10px;
    flex-shrink:0;
  }
  .brand-mark{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:38px;
    height:38px;
    border-radius:12px;
    background:var(--brand-deep);
    color:#F7F5F0;
    font-size:14px;
    font-weight:800;
    letter-spacing:.08em;
  }
  .brand-text{
    font-size:16px;
    font-weight:800;
    letter-spacing:-.01em;
    white-space:nowrap;
  }
  .nav-links{
    display:none;
    align-items:center;
    gap:4px;
    margin-left:14px;
  }
  .nav-link{
    position:relative;
    padding:8px 10px;
    font-size:15px;
    font-weight:600;
    color:var(--ink-2);
    border-radius:10px;
    transition:color .2s ease,background .2s ease;
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:10px;
    right:10px;
    bottom:2px;
    height:2px;
    background:var(--brand);
    transform:scaleX(0);
    transform-origin:left;
    transition:transform .26s ease;
  }
  .nav-link:hover{color:var(--ink);background:var(--paper-2);}
  .nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
  .nav-link.is-active{color:var(--brand);}
  .nav-end{
    display:flex;
    align-items:center;
    gap:10px;
    margin-left:auto;
  }
  .nav-search{
    display:none;
    align-items:center;
    border:1px solid var(--line);
    border-radius:999px;
    background:#fff;
    padding:0 6px 0 12px;
    height:40px;
    transition:border-color .2s ease,width .3s ease;
  }
  .nav-search input{
    width:0;
    opacity:0;
    border:0;
    background:transparent;
    font-size:14px;
    color:var(--ink);
    padding:0;
    transition:width .3s ease,opacity .2s ease;
  }
  .nav-search.is-open{border-color:var(--brand);}
  .nav-search.is-open input{width:140px;opacity:1;padding-right:6px;}
  .nav-search input:focus{outline:none;}
  .nav-search input::placeholder{color:#9A958C;}
  .icon-btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:32px;
    height:32px;
    border-radius:999px;
    color:var(--ink-2);
    transition:background .2s ease,color .2s ease;
  }
  .icon-btn:hover{background:var(--paper-2);color:var(--brand);}
  .btn-primary{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    background:var(--accent);
    color:#fff;
    font-weight:700;
    font-size:15px;
    padding:14px 28px;
    border-radius:999px;
    min-height:48px;
    box-shadow:0 1px 2px rgba(240,81,43,.24);
    transition:background .2s ease,transform .16s ease,box-shadow .2s ease;
  }
  .btn-primary:hover{background:var(--accent-press);box-shadow:0 14px 28px -16px rgba(240,81,43,.7);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-sm{padding:10px 20px;font-size:14px;min-height:42px;}
  .btn-ghost{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    border:1px solid var(--ink);
    color:var(--ink);
    font-weight:600;
    font-size:15px;
    padding:13px 26px;
    border-radius:12px;
    min-height:48px;
    background:transparent;
    transition:background .22s ease,border-color .22s ease,color .22s ease;
  }
  .btn-ghost:hover{background:var(--paper-2);border-color:var(--brand);color:var(--brand);}
  .btn-ghost:active{transform:translateY(1px);}
  .link-underline{
    position:relative;
    font-weight:600;
    color:var(--brand);
    padding-bottom:3px;
  }
  .link-underline::after{
    content:"";
    position:absolute;
    left:0;bottom:0;
    height:2px;width:60%;
    background:var(--brand);
    transition:width .28s ease;
  }
  .link-underline:hover::after{width:100%;}
  .burger{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:42px;height:42px;
    border:1px solid var(--line);
    border-radius:12px;
    color:var(--ink);
    background:#fff;
    transition:background .2s ease,border-color .2s ease;
  }
  .burger:hover{background:var(--paper-2);border-color:var(--brand);}
  @media (min-width:1024px){
    .nav-links{display:flex;}
    .nav-search{display:flex;}
    .burger{display:none;}
  }

  /* ------- 移动抽屉 ------- */
  .drawer-mask{
    position:fixed;
    inset:0;
    background:rgba(20,22,26,.45);
    opacity:0;
    pointer-events:none;
    transition:opacity .3s ease;
    z-index:70;
  }
  .drawer-mask.is-open{opacity:1;pointer-events:auto;}
  .drawer{
    position:fixed;
    top:0;right:0;
    width:82%;
    max-width:340px;
    height:100%;
    background:var(--paper);
    border-left:1px solid var(--line);
    transform:translateX(100%);
    transition:transform .32s ease;
    z-index:80;
    padding:22px 22px 40px;
    display:flex;
    flex-direction:column;
    gap:8px;
    overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-title{font-size:13px;font-weight:700;color:var(--ink-2);letter-spacing:.08em;margin:16px 0 6px;}
  .drawer a{
    display:block;
    padding:13px 14px;
    border-radius:12px;
    font-weight:600;
    font-size:16px;
    color:var(--ink);
    transition:background .2s ease,color .2s ease;
  }
  .drawer a:hover,.drawer a.is-active{background:var(--mist);color:var(--brand);}
  .drawer-search{
    display:flex;
    align-items:center;
    gap:8px;
    border:1px solid var(--line);
    border-radius:999px;
    background:#fff;
    padding:0 14px;
    height:44px;
    margin-top:8px;
  }
  .drawer-search input{border:0;background:transparent;width:100%;font-size:15px;color:var(--ink);}
  .drawer-search input:focus{outline:none;}
  .drawer-close{align-self:flex-end;font-size:14px;font-weight:700;color:var(--ink-2);padding:6px 10px;}

  /* ------- 页面通用 ------- */
  .page-hero{
    padding-top:40px;
    padding-bottom:44px;
    background:
      linear-gradient(180deg,rgba(247,245,240,.96) 0%,rgba(247,245,240,.88) 100%),
      url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    border-bottom:1px solid var(--line);
  }
  @media (min-width:768px){ .page-hero{padding-top:56px;padding-bottom:60px;} }
  @media (min-width:1024px){ .page-hero{padding-top:72px;padding-bottom:76px;} }
  .breadcrumb{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--ink-2);
    margin-bottom:22px;
    flex-wrap:wrap;
  }
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .sep{color:#B4AEA3;}
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    background:var(--mist);
    color:var(--brand);
    font-size:13px;
    font-weight:700;
    padding:6px 12px;
    border-radius:var(--r-chip);
    margin-bottom:18px;
  }
  .page-title{
    font-size:32px;
    line-height:1.12;
    font-weight:800;
    letter-spacing:-.02em;
    max-width:800px;
  }
  @media (min-width:768px){ .page-title{font-size:44px;} }
  @media (min-width:1024px){ .page-title{font-size:52px;} }
  .page-lead{
    margin-top:20px;
    font-size:17px;
    line-height:1.8;
    color:var(--ink-2);
    max-width:680px;
  }
  .hero-actions{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:14px;
    margin-top:30px;
  }
  .hero-stats{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:14px;
    margin-top:38px;
  }
  @media (min-width:768px){ .hero-stats{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;} }
  .stat-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:18px 18px 16px;
    box-shadow:var(--sh-soft);
  }
  .stat-num{
    font-size:26px;
    font-weight:800;
    letter-spacing:-.02em;
    color:var(--brand);
    font-variant-numeric:tabular-nums;
  }
  .stat-label{
    font-size:13px;
    color:var(--ink-2);
    margin-top:4px;
  }

  .section{padding-top:56px;padding-bottom:56px;}
  @media (min-width:768px){ .section{padding-top:72px;padding-bottom:72px;} }
  @media (min-width:1024px){ .section{padding-top:96px;padding-bottom:96px;} }
  .section-alt{background:var(--paper-2);}
  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:20px;
    flex-wrap:wrap;
    margin-bottom:36px;
  }
  .section-title{
    font-size:28px;
    font-weight:700;
    letter-spacing:-.015em;
    line-height:1.25;
  }
  @media (min-width:768px){ .section-title{font-size:34px;} }
  .section-sub{
    margin-top:10px;
    font-size:16px;
    color:var(--ink-2);
    max-width:640px;
  }
  .title-bar{
    display:inline-block;
    width:3px;height:18px;
    background:var(--brand);
    border-radius:2px;
    margin-right:10px;
    vertical-align:-2px;
  }

  /* ------- 长清单 ------- */
  .guide-list{
    border-top:1px solid var(--line);
  }
  .guide-row{
    display:grid;
    grid-template-columns:1fr;
    gap:18px;
    padding:26px 0;
    border-bottom:1px solid var(--line);
    transition:background .24s ease;
  }
  .guide-row:hover{background:rgba(239,235,227,.5);}
  @media (min-width:768px){
    .guide-row{
      grid-template-columns:280px minmax(0,1fr);
      gap:32px;
      align-items:flex-start;
      padding:30px 0;
    }
  }
  .guide-thumb{
    display:block;
    border-radius:var(--r-img);
    overflow:hidden;
    border:1px solid var(--line);
    aspect-ratio:4/3;
    background:var(--mist);
  }
  .guide-thumb img{
    width:100%;height:100%;
    object-fit:cover;
    transition:transform .26s ease-out;
  }
  .guide-row:hover .guide-thumb img{transform:scale(1.03);}
  .guide-head{
    display:flex;
    align-items:baseline;
    gap:14px;
  }
  .guide-no{
    font-size:22px;
    font-weight:800;
    color:var(--brand);
    font-variant-numeric:tabular-nums;
    letter-spacing:-.02em;
    flex-shrink:0;
  }
  .guide-title{
    font-size:19px;
    font-weight:700;
    line-height:1.4;
  }
  .guide-desc{
    margin-top:10px;
    font-size:16px;
    line-height:1.78;
    color:var(--ink-2);
    max-width:720px;
  }
  .tag-row{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    margin-top:16px;
  }
  .chip{
    display:inline-flex;
    align-items:center;
    height:24px;
    padding:0 10px;
    border-radius:var(--r-chip);
    background:var(--mist);
    color:var(--brand);
    font-size:13px;
    font-weight:600;
    white-space:nowrap;
  }
  .chip-plain{
    background:transparent;
    border:1px solid var(--line);
    color:var(--ink-2);
  }

  /* ------- 深色指标带 ------- */
  .band-ink{
    background:var(--ink);
    color:#F7F5F0;
    padding-top:52px;
    padding-bottom:52px;
  }
  @media (min-width:768px){ .band-ink{padding-top:64px;padding-bottom:64px;} }
  .band-ink .section-title{color:#fff;}
  .band-ink .section-sub{color:rgba(247,245,240,.68);}
  .metric-grid{
    display:grid;
    grid-template-columns:repeat(1,minmax(0,1fr));
    gap:18px;
  }
  @media (min-width:640px){ .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
  @media (min-width:1024px){ .metric-grid{grid-template-columns:repeat(4,minmax(0,1fr));} }
  .metric{
    border:1px solid rgba(247,245,240,.18);
    border-radius:var(--r-card);
    padding:22px 20px;
    background:rgba(247,245,240,.04);
    transition:transform .26s ease-out,border-color .26s ease-out;
  }
  .metric:hover{transform:translateY(-4px);border-color:rgba(220,231,227,.5);}
  .metric-num{
    font-size:30px;
    font-weight:800;
    letter-spacing:-.02em;
    color:#fff;
    font-variant-numeric:tabular-nums;
  }
  .metric-num span{font-size:15px;font-weight:600;color:var(--mist);margin-left:4px;}
  .metric-label{margin-top:8px;font-size:14px;color:rgba(247,245,240,.72);line-height:1.6;}

  /* ------- 准备清单 ------- */
  .prep-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:20px;
  }
  @media (min-width:768px){ .prep-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;} }
  .prep-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:24px 22px;
    box-shadow:var(--sh-soft);
    transition:transform .26s ease-out,box-shadow .26s ease-out,border-color .26s ease-out;
  }
  .prep-card:hover{transform:translateY(-4px);box-shadow:var(--sh-float);border-color:var(--brand);}
  .prep-icon{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:40px;height:40px;
    border-radius:12px;
    background:var(--mist);
    color:var(--brand);
    font-weight:800;
    font-size:15px;
    margin-bottom:16px;
  }
  .prep-card h3{font-size:18px;font-weight:700;line-height:1.4;}
  .prep-card p{margin-top:10px;font-size:15px;line-height:1.75;color:var(--ink-2);}
  .prep-list{margin-top:14px;border-top:1px solid var(--line);padding-top:12px;}
  .prep-list li{
    display:flex;
    gap:10px;
    font-size:14px;
    color:var(--ink-2);
    padding:7px 0;
    line-height:1.65;
  }
  .prep-list li::before{
    content:"";
    flex-shrink:0;
    width:6px;height:6px;
    margin-top:9px;
    border-radius:999px;
    background:var(--brand);
  }

  /* ------- FAQ ------- */
  .faq-wrap{max-width:860px;}
  .faq-item{
    border:1px solid var(--line);
    border-radius:var(--r-card);
    background:#fff;
    margin-bottom:14px;
    overflow:hidden;
    transition:background .26s ease,border-color .26s ease;
  }
  .faq-item.is-open{background:var(--mist);border-color:rgba(20,102,92,.35);}
  .faq-btn{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    text-align:left;
    padding:20px 22px;
    font-size:17px;
    font-weight:700;
    line-height:1.5;
    color:var(--ink);
  }
  .faq-plus{
    position:relative;
    flex-shrink:0;
    width:22px;height:22px;
    transition:transform .26s ease;
  }
  .faq-plus::before,.faq-plus::after{
    content:"";
    position:absolute;
    background:var(--brand);
    border-radius:2px;
  }
  .faq-plus::before{left:0;top:10px;width:22px;height:2px;}
  .faq-plus::after{left:10px;top:0;width:2px;height:22px;}
  .faq-item.is-open .faq-plus{transform:rotate(45deg);}
  .faq-panel{
    max-height:0;
    overflow:hidden;
    transition:max-height .26s ease;
  }
  .faq-panel p{
    padding:0 22px 22px;
    font-size:16px;
    line-height:1.8;
    color:var(--ink-2);
  }

  /* ------- CTA ------- */
  .cta-band{
    background:var(--paper-2);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    padding-top:52px;
    padding-bottom:52px;
  }
  @media (min-width:768px){ .cta-band{padding-top:72px;padding-bottom:72px;} }
  .cta-inner{
    display:grid;
    grid-template-columns:1fr;
    gap:28px;
    align-items:center;
  }
  @media (min-width:1024px){ .cta-inner{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:48px;} }
  .cta-title{
    font-size:28px;
    font-weight:800;
    letter-spacing:-.02em;
    line-height:1.2;
  }
  @media (min-width:768px){ .cta-title{font-size:36px;} }
  .cta-text{margin-top:14px;font-size:16px;color:var(--ink-2);max-width:560px;}
  .cta-side{
    display:flex;
    align-items:center;
    gap:18px;
    flex-wrap:wrap;
  }
  .qr-box{
    width:120px;height:120px;
    border-radius:16px;
    border:1px solid var(--line);
    background:#fff;
    display:flex;
    align-items:center;
    justify-content:center;
    color:var(--ink-2);
    font-size:13px;
    text-align:center;
    line-height:1.4;
    flex-shrink:0;
  }
  .cta-note{margin-top:12px;font-size:13px;color:var(--ink-2);}

  /* ------- 跨页推荐 ------- */
  .cross-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:24px;
  }
  @media (min-width:768px){ .cross-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
  .cross-card{
    display:grid;
    grid-template-columns:120px minmax(0,1fr);
    gap:18px;
    align-items:center;
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:18px;
    transition:transform .26s ease-out,box-shadow .26s ease-out,border-color .26s ease-out;
  }
  @media (min-width:768px){ .cross-card{grid-template-columns:150px minmax(0,1fr);padding:20px;} }
  .cross-card:hover{transform:translateY(-4px);box-shadow:var(--sh-float);border-color:var(--brand);}
  .cross-thumb{
    border-radius:var(--r-img);
    overflow:hidden;
    aspect-ratio:4/3;
    background:var(--mist);
    border:1px solid var(--line);
  }
  .cross-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .26s ease-out;}
  .cross-card:hover .cross-thumb img{transform:scale(1.03);}
  .cross-card h3{font-size:18px;font-weight:700;line-height:1.4;}
  .cross-card p{margin-top:8px;font-size:14px;color:var(--ink-2);line-height:1.7;}

  /* ------- 页脚 ------- */
  .site-footer{
    background:var(--brand-deep);
    color:rgba(247,245,240,.86);
    padding-top:56px;
    padding-bottom:28px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:34px;
    padding-bottom:38px;
    border-bottom:1px solid rgba(247,245,240,.16);
  }
  @media (min-width:768px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px;} }
  .footer-brand{
    display:flex;
    align-items:center;
    gap:10px;
    margin-bottom:14px;
  }
  .footer-brand .brand-mark{background:rgba(247,245,240,.14);color:#F7F5F0;}
  .footer-brand .brand-text{color:#fff;font-weight:800;}
  .footer-desc{font-size:14px;line-height:1.8;color:rgba(247,245,240,.7);max-width:340px;}
  .footer-social{display:flex;gap:10px;margin-top:18px;}
  .footer-social span{
    display:inline-flex;align-items:center;justify-content:center;
    width:34px;height:34px;
    border-radius:10px;
    border:1px solid rgba(247,245,240,.22);
    font-size:13px;
    color:rgba(247,245,240,.8);
    transition:background .2s ease,border-color .2s ease;
  }
  .footer-social span:hover{background:rgba(247,245,240,.12);border-color:rgba(247,245,240,.4);}
  .footer-col h4{
    font-size:14px;
    font-weight:700;
    color:#fff;
    margin-bottom:14px;
    letter-spacing:.02em;
  }
  .footer-col a{
    display:block;
    font-size:14px;
    color:rgba(247,245,240,.72);
    padding:6px 0;
    transition:color .2s ease,transform .2s ease;
  }
  .footer-col a:hover{color:#fff;transform:translateX(2px);}
  .footer-bottom{
    display:flex;
    flex-wrap:wrap;
    gap:10px 24px;
    justify-content:space-between;
    padding-top:22px;
    font-size:13px;
    color:rgba(247,245,240,.62);
  }

  /* ------- 动效 ------- */
  .reveal{
    opacity:0;
    transform:translateY(12px);
    transition:opacity .42s ease,transform .42s ease;
  }
  .reveal.is-in{opacity:1;transform:none;}
  .reveal-delay-1{transition-delay:.06s;}
  .reveal-delay-2{transition-delay:.12s;}
  .reveal-delay-3{transition-delay:.18s;}

  @media (prefers-reduced-motion: reduce){
    .reveal{opacity:1;transform:none;transition:none;}
    .guide-thumb img,.cross-thumb img{transition:none;}
    .guide-row:hover .guide-thumb img,.cross-card:hover .cross-thumb img{transform:none;}
    .prep-card:hover,.cross-card:hover,.metric:hover{transform:none;}
  }

/* roulang page: category2 */
:root{
    --paper:#F7F5F0;
    --paper-2:#EFEBE3;
    --ink:#14161A;
    --ink-2:#4B4F54;
    --line:#DDD7CB;
    --brand:#14665C;
    --brand-deep:#0C4A43;
    --accent:#F0512B;
    --accent-deep:#D8431F;
    --mist:#DCE7E3;
    --r-card:20px;
    --r-chip:8px;
    --r-img:16px;
    --shadow-soft:0 1px 2px rgba(20,22,26,.05);
    --shadow-float:0 18px 40px -24px rgba(20,22,26,.28);
    --nav-h:64px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
  input{font:inherit;color:inherit;}
  h1,h2,h3,h4{margin:0;letter-spacing:-.02em;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}

  .container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  @media(min-width:768px){.container-x{padding:0 32px;}}
  @media(min-width:1280px){.container-x{padding:0 48px;}}

  /* ============ header / nav ============ */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(247,245,240,.92);
    -webkit-backdrop-filter:blur(8px);
    backdrop-filter:blur(8px);
    border-bottom:1px solid transparent;
    transition:background .28s ease,border-color .28s ease;
  }
  .site-header.is-scrolled{
    background:rgba(247,245,240,.86);
    border-bottom-color:var(--line);
  }
  .nav-inner{display:flex;align-items:center;gap:14px;height:var(--nav-h);transition:height .28s ease;}
  .site-header.is-scrolled .nav-inner{height:56px;}

  .brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand-mark{
    display:inline-flex;align-items:center;justify-content:center;
    width:34px;height:34px;border-radius:10px;
    background:var(--brand);color:#fff;font-size:13.5px;font-weight:800;letter-spacing:0;
  }
  .brand-text{font-size:16px;font-weight:800;color:var(--ink);white-space:nowrap;}

  .nav-links{display:flex;align-items:center;gap:2px;margin-left:10px;}
  .nav-link{
    position:relative;padding:9px 12px;font-size:14.5px;font-weight:600;
    color:var(--ink-2);border-radius:8px;
    transition:color .2s ease;
    white-space:nowrap;
  }
  .nav-link::after{
    content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
    background:var(--brand);border-radius:2px;
    transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
  }
  .nav-link:hover{color:var(--ink);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.is-active{color:var(--brand-deep);}
  .nav-link.is-active::after{transform:scaleX(1);}

  .nav-end{display:flex;align-items:center;gap:10px;margin-left:auto;}

  .nav-search{position:relative;display:flex;align-items:center;min-width:36px;}
  .nav-search input{
    width:0;opacity:0;padding:0;height:38px;
    border:1px solid var(--line);border-radius:999px;background:#fff;
    transition:width .28s ease,opacity .2s ease,padding .28s ease,border-color .2s ease;
  }
  .nav-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(20,102,92,.12);}
  .nav-search.is-open input{width:196px;opacity:1;padding:0 44px 0 16px;}
  .nav-search .icon-btn{
    position:absolute;right:0;top:50%;transform:translateY(-50%);
    display:inline-flex;align-items:center;justify-content:center;
    width:36px;height:36px;border-radius:999px;
    border:1px solid var(--line);background:#fff;color:var(--ink-2);
    transition:border-color .2s ease,color .2s ease;
  }
  .nav-search .icon-btn:hover{border-color:var(--brand);color:var(--brand);}
  .nav-search .icon-btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

  .btn-primary{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    background:var(--accent);color:#fff;font-weight:700;font-size:15px;
    padding:14px 28px;border-radius:999px;min-height:44px;
    transition:background .2s ease,box-shadow .2s ease,transform .12s ease;
  }
  .btn-primary:hover{background:var(--accent-deep);box-shadow:0 14px 26px -14px rgba(240,81,43,.72);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-primary:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
  .btn-sm{padding:10px 20px;font-size:14px;min-height:40px;}

  .btn-ghost{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:13px 26px;border-radius:12px;border:1px solid var(--ink);
    color:var(--ink);font-weight:600;font-size:15px;min-height:44px;
    transition:background .2s ease,border-color .2s ease,transform .12s ease;
  }
  .btn-ghost:hover{background:var(--paper-2);}
  .btn-ghost:active{transform:translateY(1px);}
  .btn-ghost:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

  .burger{
    display:none;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:12px;
    border:1px solid var(--line);background:#fff;color:var(--ink);
    transition:border-color .2s ease,color .2s ease;
  }
  .burger:hover{border-color:var(--brand);color:var(--brand);}
  .burger:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

  @media(max-width:1023px){
    .nav-links{display:none;}
    .nav-search{display:none;}
    .burger{display:inline-flex;}
  }
  @media(max-width:420px){
    .brand-mark{width:30px;height:30px;font-size:12px;}
    .brand-text{font-size:13.5px;}
    .btn-primary.btn-sm{padding:9px 14px;font-size:13px;min-height:38px;}
  }

  /* ============ drawer ============ */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(20,22,26,.45);
    opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;z-index:70;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);
    background:var(--paper);z-index:80;
    transform:translateX(100%);transition:transform .3s ease;
    padding:22px 20px 32px;overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
  .drawer-title{font-size:15px;font-weight:800;color:var(--ink);}
  .drawer-close{
    display:inline-flex;align-items:center;justify-content:center;
    width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:#fff;
  }
  .drawer-link{
    display:block;padding:13px 14px;border-radius:12px;
    font-size:15px;font-weight:600;color:var(--ink-2);
    border:1px solid transparent;transition:background .2s ease,color .2s ease,border-color .2s ease;
  }
  .drawer-link:hover{background:var(--paper-2);color:var(--ink);}
  .drawer-link.is-active{background:var(--mist);color:var(--brand-deep);border-color:var(--brand);}
  .drawer-search{margin:14px 0 8px;}
  .drawer-search input{
    width:100%;height:44px;padding:0 16px;border-radius:999px;
    border:1px solid var(--line);background:#fff;
  }
  .drawer-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(20,102,92,.12);}

  /* ============ sections ============ */
  .section{padding:56px 0;}
  @media(min-width:768px){.section{padding:72px 0;}}
  @media(min-width:1024px){.section{padding:88px 0;}}
  .section--paper2{background:var(--paper-2);}

  .page-hero{padding:48px 0 40px;border-bottom:1px solid var(--line);}
  @media(min-width:768px){.page-hero{padding:60px 0 48px;}}

  .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);margin-bottom:22px;flex-wrap:wrap;}
  .crumb a{transition:color .2s ease;}
  .crumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
  .crumb .sep{color:var(--line);}
  .crumb .current{color:var(--ink);font-weight:600;}

  .tag{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;
    border-radius:var(--r-chip);font-size:13px;font-weight:600;
    background:var(--mist);color:var(--brand);
  }

  .page-hero h1{
    font-size:clamp(30px,4.4vw,50px);
    font-weight:800;line-height:1.1;letter-spacing:-.02em;
    max-width:840px;margin-top:16px;
  }
  .page-hero .lead{
    max-width:720px;margin-top:20px;font-size:17px;line-height:1.8;color:var(--ink-2);
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}

  .sec-title{font-size:clamp(23px,3vw,32px);font-weight:700;line-height:1.25;}
  .sec-sub{margin-top:12px;font-size:16px;line-height:1.8;color:var(--ink-2);max-width:660px;}

  /* ============ alternating rows ============ */
  .alt-list{margin-top:44px;}
  .alt-row{
    display:grid;grid-template-columns:1fr;gap:22px;
    padding:36px 0;border-top:1px solid var(--line);
  }
  .alt-row:first-child{border-top:0;padding-top:0;}
  .alt-row:last-child{padding-bottom:0;}

  .alt-media{
    position:relative;border-radius:var(--r-card);overflow:hidden;
    border:1px solid var(--line);background:var(--mist);aspect-ratio:4/3;
  }
  .alt-media img{width:100%;height:100%;object-fit:cover;transition:transform .26s ease-out;}
  .alt-row:hover .alt-media img{transform:scale(1.03);}

  .alt-index{
    display:inline-flex;align-items:center;justify-content:center;
    min-width:46px;height:32px;padding:0 10px;margin-bottom:14px;
    border-radius:var(--r-chip);background:var(--mist);color:var(--brand);
    font-size:14px;font-weight:800;letter-spacing:.08em;
  }
  .alt-body h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;line-height:1.3;color:var(--ink);}
  .alt-body p{margin-top:14px;font-size:16.5px;line-height:1.8;color:var(--ink-2);}

  .dot-list{display:flex;flex-direction:column;gap:10px;margin-top:18px;}
  .dot-list li{position:relative;padding-left:18px;font-size:15px;line-height:1.7;color:var(--ink-2);}
  .dot-list li::before{
    content:"";position:absolute;left:0;top:9px;
    width:6px;height:6px;border-radius:50%;background:var(--brand);
  }

  @media(min-width:1024px){
    .alt-row{grid-template-columns:5fr 7fr;gap:56px;align-items:center;}
    .alt-row.rev .alt-media{order:2;}
    .alt-row.rev .alt-body{order:1;}
  }

  /* ============ metric band ============ */
  .metric-band{
    background:var(--brand-deep);color:#fff;border-radius:24px;
    padding:28px 24px;
    display:grid;grid-template-columns:1fr 1fr;gap:22px 18px;
  }
  .metric-item{display:flex;flex-direction:column;gap:4px;}
  .metric-num{font-size:26px;font-weight:800;line-height:1.1;letter-spacing:-.02em;}
  .metric-label{font-size:13.5px;color:rgba(255,255,255,.72);line-height:1.6;}
  @media(min-width:768px){
    .metric-band{grid-template-columns:repeat(4,1fr);gap:24px;padding:34px 36px;}
    .metric-num{font-size:30px;}
  }

  /* ============ FAQ ============ */
  .faq-list{display:flex;flex-direction:column;gap:12px;margin-top:32px;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:16px;
    transition:background .26s ease,border-color .26s ease;
  }
  .faq-item.is-open{background:var(--mist);border-color:var(--brand);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 20px;text-align:left;font-size:16.5px;font-weight:700;color:var(--ink);
  }
  .faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:16px;}
  .faq-icon{
    flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
    width:26px;height:26px;border-radius:50%;
    background:rgba(20,102,92,.12);color:var(--brand);
    font-size:16px;font-weight:700;line-height:1;
    transition:transform .26s ease;
  }
  .faq-item.is-open .faq-icon{transform:rotate(45deg);}
  .faq-panel{max-height:0;overflow:hidden;transition:max-height .26s ease;}
  .faq-a{padding:0 20px 20px;font-size:15.5px;line-height:1.8;color:var(--ink-2);}

  /* ============ CTA band ============ */
  .cta-band{
    background:var(--paper-2);border:1px solid var(--line);border-radius:24px;
    padding:32px 24px;
    display:flex;flex-direction:column;gap:22px;
  }
  .cta-band h2{font-size:clamp(22px,2.8vw,30px);font-weight:800;line-height:1.3;}
  .cta-band p{margin-top:10px;font-size:16px;line-height:1.8;color:var(--ink-2);max-width:560px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
  @media(min-width:900px){
    .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:40px 44px;gap:40px;}
    .cta-actions{flex:0 0 auto;}
  }

  /* ============ rec cards ============ */
  .rec-grid{display:grid;grid-template-columns:1fr;gap:24px;margin-top:32px;}
  @media(min-width:768px){.rec-grid{grid-template-columns:1fr 1fr;}}
  .rec-card{
    display:flex;gap:18px;padding:18px;background:#fff;
    border:1px solid var(--line);border-radius:var(--r-card);
    transition:transform .26s ease-out,box-shadow .26s ease-out,border-color .26s ease-out;
  }
  .rec-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-float);border-color:var(--brand);}
  .rec-card:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
  .rec-thumb{
    flex:0 0 112px;aspect-ratio:4/3;border-radius:12px;overflow:hidden;background:var(--mist);
  }
  .rec-thumb img{width:100%;height:100%;object-fit:cover;}
  .rec-body h3{font-size:17px;font-weight:700;line-height:1.4;}
  .rec-body p{margin-top:6px;font-size:14px;line-height:1.7;color:var(--ink-2);}
  @media(max-width:520px){
    .rec-card{flex-direction:column;gap:14px;}
    .rec-thumb{flex:none;width:100%;}
  }

  /* ============ footer ============ */
  .site-footer{background:var(--brand-deep);color:rgba(255,255,255,.78);padding:60px 0 26px;}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:34px;}
  @media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
  .footer-brand .brand-mark{background:rgba(255,255,255,.14);color:#fff;}
  .footer-brand .brand-text{color:#fff;font-size:17px;font-weight:800;}
  .footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:380px;}
  .footer-social{display:flex;gap:10px;margin-top:18px;}
  .footer-social span{
    display:inline-flex;align-items:center;justify-content:center;
    width:34px;height:34px;border-radius:50%;
    border:1px solid rgba(255,255,255,.22);font-size:13px;color:rgba(255,255,255,.8);
  }
  .footer-col h4{font-size:14px;font-weight:700;color:#fff;margin:0 0 14px;}
  .footer-col a{
    display:block;font-size:14px;color:rgba(255,255,255,.72);padding:5px 0;
    transition:color .2s ease;
  }
  .footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
  .footer-bottom{
    display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
    margin-top:42px;padding-top:20px;
    border-top:1px solid rgba(255,255,255,.14);
    font-size:13px;color:rgba(255,255,255,.55);
  }

  /* ============ reveal ============ */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease,transform .42s ease;}
  .reveal.is-in{opacity:1;transform:none;}

  @media(prefers-reduced-motion:reduce){
    *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
    html{scroll-behavior:auto;}
    .reveal{opacity:1;transform:none;}
  }

/* roulang page: category3 */
:root{
    --paper:#F7F5F0;
    --paper-2:#EFEBE3;
    --ink:#14161A;
    --ink-2:#4B4F54;
    --line:#DDD7CB;
    --brand:#14665C;
    --brand-deep:#0C4A43;
    --accent:#F0512B;
    --accent-deep:#D8431F;
    --mist:#DCE7E3;
    --radius-card:20px;
    --radius-chip:8px;
    --radius-img:16px;
    --shadow-soft:0 1px 2px rgba(20,22,26,.05);
    --shadow-float:0 18px 40px -24px rgba(20,22,26,.28);
    --gutter:20px;
    --nav-h:60px;
  }
  @media (min-width:768px){ :root{ --gutter:32px; } }
  @media (min-width:1280px){ :root{ --gutter:48px; } }

  *,*::before,*::after{ box-sizing:border-box; }
  html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{ display:block; max-width:100%; height:auto; }
  a{ color:inherit; text-decoration:none; }
  button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
  input{ font:inherit; }
  h1,h2,h3,h4{ margin:0; letter-spacing:-0.02em; line-height:1.15; font-weight:700; }
  p{ margin:0; }
  ul,ol{ margin:0; padding:0; list-style:none; }

  :focus-visible{ outline:2px solid var(--brand); outline-offset:2px; border-radius:4px; }

  .container-x{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:var(--gutter);
    padding-right:var(--gutter);
  }

  /* ---------- header / nav ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(247,245,240,.94);
    border-bottom:1px solid transparent;
    transition:height .24s ease, background .24s ease, border-color .24s ease, backdrop-filter .24s ease;
  }
  .site-header.is-scrolled{
    background:rgba(247,245,240,.86);
    backdrop-filter:blur(8px);
    -webkit-backdrop-filter:blur(8px);
    border-bottom-color:var(--line);
  }
  .nav-inner{
    height:var(--nav-h);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    transition:height .24s ease;
  }
  .site-header.is-scrolled .nav-inner{ height:52px; }

  .brand{ display:inline-flex; align-items:center; gap:10px; min-width:0; }
  .brand-mark{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:34px; height:34px;
    border-radius:10px;
    background:var(--brand);
    color:#fff;
    font-size:14px;
    font-weight:800;
    letter-spacing:0;
    flex:0 0 auto;
  }
  .brand-text{
    font-size:16px;
    font-weight:800;
    color:var(--ink);
    white-space:nowrap;
    overflow:hidden;
    text-overflow:ellipsis;
  }

  .nav-links{ display:none; align-items:center; gap:4px; }
  .nav-link{
    position:relative;
    padding:10px 12px;
    font-size:15px;
    font-weight:600;
    color:var(--ink-2);
    border-radius:10px;
    transition:color .18s ease, background .18s ease;
  }
  .nav-link:hover{ color:var(--brand); background:var(--paper-2); }
  .nav-link.is-active{ color:var(--brand); }
  .nav-link.is-active::after{
    content:"";
    position:absolute;
    left:12px; right:12px; bottom:4px;
    height:2px;
    background:var(--brand);
    border-radius:2px;
  }

  .nav-end{ display:flex; align-items:center; gap:10px; }
  .nav-search{
    display:none;
    align-items:center;
    gap:6px;
    border:1px solid var(--line);
    border-radius:999px;
    padding:4px 6px 4px 12px;
    background:var(--paper-2);
    transition:border-color .2s ease, background .2s ease, width .24s ease;
  }
  .nav-search input[type="search"]{
    width:0;
    opacity:0;
    padding:0;
    border:0;
    background:transparent;
    outline:none;
    font-size:14px;
    color:var(--ink);
    transition:width .24s ease, opacity .2s ease;
  }
  .nav-search input[type="search"]::placeholder{ color:#8B8F93; }
  .nav-search.is-open{ border-color:var(--brand); background:var(--paper); }
  .nav-search.is-open input[type="search"]{ width:170px; opacity:1; }
  .icon-btn{
    width:32px; height:32px;
    display:inline-flex; align-items:center; justify-content:center;
    border-radius:999px;
    color:var(--brand);
    transition:background .18s ease;
  }
  .icon-btn:hover{ background:var(--mist); }

  .btn-primary{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:44px;
    padding:14px 28px;
    border-radius:999px;
    background:var(--accent);
    color:#fff;
    font-weight:700;
    font-size:15px;
    line-height:1;
    transition:background .2s ease, box-shadow .2s ease, transform .16s ease;
  }
  .btn-primary:hover{ background:var(--accent-deep); box-shadow:0 12px 24px -14px rgba(240,81,43,.75); }
  .btn-primary:active{ transform:translateY(1px); }
  .btn-sm{ min-height:40px; padding:10px 20px; font-size:14px; }

  .btn-ghost{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    min-height:44px;
    padding:13px 26px;
    border-radius:12px;
    border:1px solid var(--ink);
    background:transparent;
    color:var(--ink);
    font-weight:700;
    font-size:15px;
    transition:background .2s ease, color .2s ease;
  }
  .btn-ghost:hover{ background:var(--paper-2); }

  .link-underline{
    position:relative;
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-weight:700;
    color:var(--brand);
    padding-bottom:2px;
  }
  .link-underline::after{
    content:"";
    position:absolute;
    left:0; bottom:0;
    height:2px; width:60%;
    background:var(--brand);
    border-radius:2px;
    transition:width .24s ease;
  }
  .link-underline:hover::after{ width:100%; }

  .burger{
    width:40px; height:40px;
    display:inline-flex; align-items:center; justify-content:center;
    border:1px solid var(--line);
    border-radius:12px;
    background:var(--paper-2);
    color:var(--ink);
    transition:background .2s ease;
  }
  .burger:hover{ background:var(--mist); }

  @media (min-width:1024px){
    .nav-links{ display:flex; }
    .nav-search{ display:flex; }
    .burger{ display:none; }
  }

  /* ---------- mobile drawer ---------- */
  .drawer-mask{
    position:fixed; inset:0;
    background:rgba(20,22,26,.5);
    opacity:0; visibility:hidden;
    transition:opacity .26s ease, visibility .26s ease;
    z-index:80;
  }
  .drawer-mask.is-open{ opacity:1; visibility:visible; }
  .drawer{
    position:fixed; top:0; right:0; bottom:0;
    width:min(84vw,340px);
    background:var(--paper);
    border-left:1px solid var(--line);
    transform:translateX(100%);
    transition:transform .28s ease;
    z-index:90;
    padding:20px var(--gutter) 32px;
    overflow-y:auto;
  }
  .drawer.is-open{ transform:translateX(0); }
  .drawer-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:20px; }
  .drawer-title{ font-size:15px; font-weight:800; color:var(--ink); }
  .drawer-close{
    width:36px; height:36px;
    display:inline-flex; align-items:center; justify-content:center;
    border:1px solid var(--line); border-radius:12px;
    background:var(--paper-2);
  }
  .drawer-nav{ display:flex; flex-direction:column; gap:4px; }
  .drawer-nav a{
    padding:13px 12px;
    border-radius:12px;
    font-weight:600;
    font-size:16px;
    color:var(--ink-2);
    transition:background .18s ease, color .18s ease;
  }
  .drawer-nav a:hover{ background:var(--paper-2); color:var(--brand); }
  .drawer-nav a.is-active{ background:var(--mist); color:var(--brand-deep); }
  .drawer-search{
    margin:18px 0 12px;
    display:flex; align-items:center; gap:8px;
    border:1px solid var(--line);
    border-radius:999px;
    padding:10px 14px;
    background:var(--paper-2);
  }
  .drawer-search input{ flex:1; border:0; background:transparent; outline:none; font-size:15px; }

  /* ---------- hero ---------- */
  .page-hero{
    padding:40px 0 12px;
    border-bottom:1px solid var(--line);
  }
  @media (min-width:768px){ .page-hero{ padding:56px 0 20px; } }
  @media (min-width:1024px){ .page-hero{ padding:72px 0 28px; } }

  .breadcrumb{
    display:flex; flex-wrap:wrap; align-items:center; gap:8px;
    font-size:13px;
    color:var(--ink-2);
    margin-bottom:20px;
  }
  .breadcrumb a:hover{ color:var(--brand); text-decoration:underline; }
  .breadcrumb .sep{ color:#B4AFA5; }

  .hero-split{
    display:grid;
    gap:28px;
    align-items:center;
  }
  @media (min-width:1024px){
    .hero-split{ grid-template-columns:minmax(0,1fr) 360px; gap:48px; }
  }
  .eyebrow{
    display:inline-flex; align-items:center; gap:8px;
    font-size:13px; font-weight:700;
    color:var(--brand);
    letter-spacing:.02em;
    margin-bottom:16px;
  }
  .eyebrow::before{ content:""; width:22px; height:2px; background:var(--brand); border-radius:2px; }

  .page-hero h1{
    font-size:30px;
    font-weight:800;
    line-height:1.12;
    color:var(--ink);
  }
  @media (min-width:768px){ .page-hero h1{ font-size:40px; } }
  @media (min-width:1024px){ .page-hero h1{ font-size:50px; } }

  .hero-lead{
    margin-top:18px;
    font-size:16px;
    line-height:1.8;
    color:var(--ink-2);
    max-width:640px;
  }
  @media (min-width:768px){ .hero-lead{ font-size:17px; } }

  .hero-actions{
    display:flex; flex-wrap:wrap; align-items:center; gap:16px;
    margin-top:26px;
  }

  .hero-media{
    position:relative;
    border-radius:var(--radius-img);
    overflow:hidden;
    border:1px solid var(--line);
    background:var(--mist);
    aspect-ratio:4/3;
  }
  .hero-media img{ width:100%; height:100%; object-fit:cover; }
  .hero-media::after{
    content:"";
    position:absolute; inset:0;
    background:linear-gradient(180deg, rgba(20,22,26,0) 40%, rgba(20,22,26,.72) 100%);
  }
  .hero-media-tag{
    position:absolute; left:16px; right:16px; bottom:14px;
    z-index:2;
    color:#fff;
    font-size:13px;
    font-weight:600;
    display:flex; align-items:center; justify-content:space-between; gap:12px;
  }

  /* ---------- stats strip ---------- */
  .stat-strip{
    margin-top:34px;
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .stat-cell{
    padding:18px 12px 20px;
    border-right:1px solid var(--line);
  }
  .stat-cell:last-child{ border-right:0; }
  .stat-num{
    font-size:26px;
    font-weight:800;
    color:var(--ink);
    letter-spacing:-0.02em;
    font-variant-numeric:tabular-nums;
  }
  @media (min-width:768px){ .stat-num{ font-size:32px; } }
  .stat-label{ margin-top:4px; font-size:13px; color:var(--ink-2); }

  /* ---------- general section ---------- */
  .section{ padding:56px 0; }
  @media (min-width:768px){ .section{ padding:72px 0; } }
  @media (min-width:1024px){ .section{ padding:96px 0; } }
  .section-alt{ background:var(--paper-2); }
  .section-deep{ background:var(--brand-deep); color:#EAEFEC; }

  .section-head{ margin-bottom:32px; }
  @media (min-width:768px){ .section-head{ margin-bottom:44px; } }
  .section-title{
    font-size:26px;
    font-weight:700;
    color:var(--ink);
  }
  @media (min-width:768px){ .section-title{ font-size:32px; } }
  @media (min-width:1024px){ .section-title{ font-size:34px; } }
  .section-desc{
    margin-top:12px;
    font-size:16px;
    line-height:1.8;
    color:var(--ink-2);
    max-width:680px;
  }
  .section-deep .section-title{ color:#fff; }
  .section-deep .section-desc{ color:#C6D6D1; }

  .chip{
    display:inline-flex; align-items:center;
    height:24px;
    padding:0 10px;
    border-radius:var(--radius-chip);
    background:var(--mist);
    color:var(--brand-deep);
    font-size:13px;
    font-weight:600;
  }

  /* ---------- timeline ---------- */
  .timeline{
    position:relative;
    padding-left:26px;
  }
  .timeline::before{
    content:"";
    position:absolute;
    left:6px; top:8px; bottom:8px;
    width:2px;
    background:linear-gradient(180deg, var(--brand) 0%, rgba(20,102,92,.28) 100%);
    border-radius:2px;
  }
  @media (min-width:768px){
    .timeline{ padding-left:44px; }
    .timeline::before{ left:9px; }
  }
  .tl-item{
    position:relative;
    padding-bottom:34px;
  }
  .tl-item:last-child{ padding-bottom:0; }
  .tl-item::before{
    content:"";
    position:absolute;
    left:-26px; top:6px;
    width:14px; height:14px;
    border-radius:50%;
    background:var(--paper);
    border:3px solid var(--brand);
    box-sizing:content-box;
  }
  @media (min-width:768px){
    .tl-item::before{ left:-44px; }
  }
  .tl-card{
    background:var(--paper);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:20px;
    box-shadow:var(--shadow-soft);
    transition:transform .26s ease, box-shadow .26s ease, border-color .26s ease;
  }
  .tl-card:hover{
    transform:translateY(-4px);
    box-shadow:var(--shadow-float);
    border-color:#C8C1B3;
  }
  @media (min-width:768px){ .tl-card{ padding:26px; } }

  .tl-layout{ display:grid; gap:20px; }
  @media (min-width:768px){
    .tl-layout{ grid-template-columns:minmax(0,1fr) 200px; gap:26px; align-items:start; }
  }
  .tl-thumb{
    border-radius:var(--radius-img);
    overflow:hidden;
    border:1px solid var(--line);
    background:var(--mist);
    aspect-ratio:4/3;
  }
  .tl-thumb img{ width:100%; height:100%; object-fit:cover; transition:transform .26s ease-out; }
  .tl-card:hover .tl-thumb img{ transform:scale(1.03); }

  .tl-step{
    display:inline-flex; align-items:center; gap:10px;
    font-size:13px;
    font-weight:700;
    color:var(--brand);
    letter-spacing:.06em;
    margin-bottom:10px;
  }
  .tl-step::before{
    content:"";
    width:18px; height:2px; background:var(--brand); border-radius:2px;
  }
  .tl-title{
    font-size:18px;
    font-weight:700;
    color:var(--ink);
  }
  @media (min-width:768px){ .tl-title{ font-size:19px; } }
  .tl-text{
    margin-top:10px;
    font-size:16px;
    line-height:1.8;
    color:var(--ink-2);
  }
  .tl-points{
    margin-top:14px;
    display:flex;
    flex-wrap:wrap;
    gap:8px;
  }
  .tl-point{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:13px;
    font-weight:600;
    color:var(--ink-2);
    background:var(--paper-2);
    border:1px solid var(--line);
    border-radius:var(--radius-chip);
    height:26px;
    padding:0 10px;
  }
  .tl-point::before{
    content:"";
    width:5px; height:5px;
    border-radius:50%;
    background:var(--brand);
  }

  /* ---------- key cards ---------- */
  .key-grid{
    display:grid;
    gap:24px;
  }
  @media (min-width:900px){
    .key-grid{ grid-template-columns:1.4fr 1fr; grid-auto-rows:minmax(0,auto); }
    .key-lead{ grid-row:span 2; }
  }
  .key-card{
    background:var(--paper);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:24px;
    box-shadow:var(--shadow-soft);
    transition:transform .26s ease, box-shadow .26s ease;
  }
  .key-card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-float); }
  .key-card h3{ font-size:18px; font-weight:700; color:var(--ink); }
  .key-card p{ margin-top:12px; font-size:16px; line-height:1.8; color:var(--ink-2); }
  .key-num{
    font-size:34px;
    font-weight:800;
    color:rgba(20,102,92,.22);
    line-height:1;
    margin-bottom:14px;
    font-variant-numeric:tabular-nums;
  }
  .key-lead{
    background:var(--paper-2);
  }
  .key-media{
    margin-top:20px;
    border-radius:var(--radius-img);
    overflow:hidden;
    border:1px solid var(--line);
    background:var(--mist);
    aspect-ratio:16/9;
  }
  .key-media img{ width:100%; height:100%; object-fit:cover; }

  /* ---------- divider list ---------- */
  .dlist{ border-top:1px solid var(--line); }
  .drow{
    display:grid;
    gap:8px;
    padding:20px 0;
    border-bottom:1px solid var(--line);
    align-items:start;
  }
  @media (min-width:768px){
    .drow{ grid-template-columns:200px minmax(0,1fr); gap:24px; padding:24px 0; align-items:center; }
  }
  .drow-label{
    display:inline-flex; align-items:center; gap:10px;
    font-size:16px; font-weight:700; color:var(--ink);
  }
  .drow-label::before{
    content:"";
    width:8px; height:8px;
    border-radius:2px;
    background:var(--accent);
    flex:0 0 auto;
  }
  .drow-text{ font-size:16px; line-height:1.8; color:var(--ink-2); }

  /* ---------- faq ---------- */
  .faq-list{ border-top:1px solid var(--line); }
  .faq-item{ border-bottom:1px solid var(--line); transition:background .26s ease; }
  .faq-item.is-open{ background:var(--mist); }
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    text-align:left;
    padding:20px 16px;
    font-size:16px;
    font-weight:700;
    color:var(--ink);
    transition:color .2s ease;
  }
  @media (min-width:768px){ .faq-q{ font-size:17px; padding:22px 20px; } }
  .faq-q:hover{ color:var(--brand); }
  .faq-icon{
    position:relative;
    width:22px; height:22px;
    flex:0 0 auto;
    border-radius:50%;
    border:1px solid var(--line);
    background:var(--paper);
    transition:transform .26s ease, border-color .26s ease;
  }
  .faq-icon::before,.faq-icon::after{
    content:"";
    position:absolute;
    background:var(--brand);
    border-radius:2px;
  }
  .faq-icon::before{ left:5px; right:5px; top:10px; height:2px; }
  .faq-icon::after{ top:5px; bottom:5px; left:10px; width:2px; }
  .faq-item.is-open .faq-icon{ transform:rotate(45deg); border-color:var(--brand); }
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height .26s ease;
  }
  .faq-a-inner{
    padding:0 16px 22px;
    font-size:16px;
    line-height:1.8;
    color:var(--ink-2);
  }
  @media (min-width:768px){ .faq-a-inner{ padding:0 20px 26px; } }

  /* ---------- cta band ---------- */
  .cta-band{
    background:var(--paper-2);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .cta-inner{
    display:grid;
    gap:28px;
    padding:56px 0;
    align-items:center;
  }
  @media (min-width:768px){ .cta-inner{ padding:72px 0; } }
  @media (min-width:1024px){
    .cta-inner{ grid-template-columns:minmax(0,1fr) auto auto; gap:40px; padding:80px 0; }
  }
  .cta-title{ font-size:26px; font-weight:800; color:var(--ink); }
  @media (min-width:768px){ .cta-title{ font-size:32px; } }
  .cta-desc{ margin-top:12px; font-size:16px; color:var(--ink-2); line-height:1.8; max-width:560px; }
  .qr-box{
    width:120px; height:120px;
    border-radius:16px;
    border:1px solid var(--line);
    background:
      linear-gradient(135deg, rgba(20,102,92,.12), rgba(20,102,92,.04)),
      repeating-linear-gradient(45deg, rgba(20,22,26,.06) 0 6px, transparent 6px 12px);
    display:flex; align-items:center; justify-content:center;
    color:var(--brand);
    font-size:12px;
    font-weight:700;
    text-align:center;
    line-height:1.4;
  }
  .qr-note{ margin-top:10px; font-size:13px; color:var(--ink-2); max-width:160px; }

  /* ---------- cross links ---------- */
  .cross-grid{ display:grid; gap:24px; }
  @media (min-width:768px){ .cross-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); } }
  .cross-card{
    display:block;
    background:var(--paper);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    overflow:hidden;
    box-shadow:var(--shadow-soft);
    transition:transform .26s ease, box-shadow .26s ease, border-color .26s ease;
  }
  .cross-card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-float); border-color:#C8C1B3; }
  .cross-media{
    aspect-ratio:16/9;
    overflow:hidden;
    background:var(--mist);
    border-bottom:1px solid var(--line);
  }
  .cross-media img{ width:100%; height:100%; object-fit:cover; transition:transform .26s ease-out; }
  .cross-card:hover .cross-media img{ transform:scale(1.03); }
  .cross-body{ padding:20px; }
  .cross-body h3{ margin-top:10px; font-size:18px; font-weight:700; color:var(--ink); }
  .cross-body p{ margin-top:8px; font-size:15px; color:var(--ink-2); line-height:1.7; }

  /* ---------- footer ---------- */
  .site-footer{
    background:var(--brand-deep);
    color:#C6D6D1;
    padding-top:56px;
  }
  @media (min-width:768px){ .site-footer{ padding-top:72px; } }
  .footer-grid{
    display:grid;
    gap:32px;
    padding-bottom:40px;
    border-bottom:1px solid rgba(255,255,255,.14);
  }
  @media (min-width:768px){ .footer-grid{ grid-template-columns:1.4fr 1fr 1fr 1fr; gap:32px; } }
  .footer-brand{ display:flex; align-items:center; gap:10px; }
  .footer-brand .brand-mark{ background:#fff; color:var(--brand-deep); }
  .footer-brand .brand-text{ color:#fff; font-size:17px; font-weight:800; }
  .footer-desc{
    margin-top:16px;
    font-size:15px;
    line-height:1.8;
    color:#A9C0BA;
    max-width:320px;
  }
  .footer-social{ display:flex; gap:10px; margin-top:18px; }
  .footer-social span{
    width:34px; height:34px;
    border-radius:10px;
    border:1px solid rgba(255,255,255,.2);
    display:inline-flex; align-items:center; justify-content:center;
    font-size:13px;
    color:#DCE7E3;
    transition:background .2s ease;
  }
  .footer-social span:hover{ background:rgba(255,255,255,.12); }
  .footer-col h4{
    font-size:15px;
    font-weight:700;
    color:#fff;
    margin-bottom:14px;
  }
  .footer-col a{
    display:block;
    padding:7px 0;
    font-size:15px;
    color:#A9C0BA;
    transition:color .18s ease, transform .18s ease;
  }
  .footer-col a:hover{ color:#fff; transform:translateX(3px); }
  .footer-bottom{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    justify-content:space-between;
    padding:22px 0 30px;
    font-size:13px;
    color:#8FA8A2;
  }

  /* ---------- reveal ---------- */
  .reveal{
    opacity:0;
    transform:translateY(12px);
    transition:opacity .42s ease, transform .42s ease;
  }
  .reveal.is-visible{ opacity:1; transform:translateY(0); }

  @media (prefers-reduced-motion: reduce){
    html{ scroll-behavior:auto; }
    .reveal{ opacity:1; transform:none; transition:none; }
    .tl-card,.key-card,.cross-card{ transition:none; }
    .tl-card:hover,.key-card:hover,.cross-card:hover{ transform:none; }
    .tl-card:hover .tl-thumb img,.cross-card:hover .cross-media img{ transform:none; }
  }

/* roulang page: category4 */
:root{
  --paper:#F7F5F0;
  --paper-2:#EFEBE3;
  --ink:#14161A;
  --ink-2:#4B4F54;
  --line:#DDD7CB;
  --brand:#14665C;
  --brand-deep:#0C4A43;
  --accent:#F0512B;
  --accent-deep:#D8431F;
  --mist:#DCE7E3;
  --radius-card:20px;
  --radius-chip:8px;
  --radius-btn:999px;
  --radius-img:16px;
  --shadow-soft:0 1px 2px rgba(20,22,26,.05);
  --shadow-float:0 18px 40px -24px rgba(20,22,26,.28);
  --header-h:60px;
}
*,*::before,*::after{box-sizing:border-box;}
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
html body{
  margin:0;
  padding:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,"Inter",-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* ---------- 容器 ---------- */
.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){ .container-x{padding-left:32px;padding-right:32px;} }
@media (min-width:1024px){ .container-x{padding-left:48px;padding-right:48px;} }

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  height:var(--header-h);
  background:rgba(247,245,240,.94);
  border-bottom:1px solid transparent;
  transition:height .24s ease, background .24s ease, border-color .24s ease, box-shadow .24s ease;
}
.site-header.is-scrolled{
  height:52px;
  background:rgba(247,245,240,.86);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-soft);
}
.nav-inner{
  height:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:10px;
  background:var(--brand);color:#fff;
  font-size:14px;font-weight:700;letter-spacing:.02em;
}
.brand-text{font-size:15.5px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;flex:1 1 auto;justify-content:center;}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:14.5px;
  font-weight:600;
  color:var(--ink-2);
  border-radius:8px;
  transition:color .2s ease, background .2s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s ease;
  border-radius:2px;
}
.nav-link:hover{color:var(--ink);background:var(--paper-2);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-end{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-search{display:flex;align-items:center;gap:6px;position:relative;}
.nav-search input[type=search]{
  width:0;opacity:0;padding:0;border:1px solid transparent;background:#fff;
  border-radius:var(--radius-btn);height:36px;font-size:14px;
  transition:width .26s ease, opacity .26s ease, padding .26s ease, border-color .2s ease;
}
.nav-search.is-open input[type=search]{width:190px;opacity:1;padding:0 14px;border-color:var(--line);}
.nav-search input[type=search]:focus{outline:none;border-color:var(--brand);}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--ink-2);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);background:var(--mist);}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;
  padding:14px 28px;
  min-height:44px;
  background:var(--accent);
  color:#fff;
  font-weight:700;
  font-size:15.5px;
  border-radius:var(--radius-btn);
  box-shadow:var(--shadow-soft);
  transition:background .22s ease, box-shadow .22s ease, transform .16s ease;
  white-space:nowrap;
}
.btn-primary:hover{background:var(--accent-deep);box-shadow:var(--shadow-float);}
.btn-primary:active{transform:translateY(1px);}
.btn-sm{padding:10px 20px;min-height:40px;font-size:14.5px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  padding:13px 26px;min-height:44px;
  border:1px solid var(--ink);
  border-radius:12px;
  font-weight:600;font-size:15.5px;
  background:transparent;
  transition:background .22s ease,border-color .22s ease,color .22s ease;
}
.btn-ghost:hover{background:var(--paper-2);border-color:var(--brand);color:var(--brand);}
.link-more{
  position:relative;font-weight:600;font-size:14.5px;color:var(--brand);
  display:inline-flex;align-items:center;gap:6px;
}
.link-more::after{
  content:"";position:absolute;left:0;bottom:-4px;height:1px;width:60%;
  background:var(--brand);transition:width .26s ease;
}
.link-more:hover::after{width:100%;}
.burger{
  display:none;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;
}
.burger:hover{border-color:var(--brand);color:var(--brand);}
@media (max-width:1000px){
  .nav-links{display:none;}
  .burger{display:inline-flex;}
}
@media (max-width:520px){
  .brand-text{font-size:14px;}
  .nav-search{display:none;}
}

/* ---------- 移动抽屉 ---------- */
.scrim{
  position:fixed;inset:0;background:rgba(20,22,26,.5);
  opacity:0;visibility:hidden;transition:opacity .26s ease,visibility .26s ease;z-index:70;
}
.scrim.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:82%;max-width:340px;
  background:var(--paper);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .3s ease;z-index:80;
  display:flex;flex-direction:column;padding:22px 22px 32px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-nav{display:flex;flex-direction:column;gap:2px;}
.drawer-nav a{
  padding:13px 12px;border-radius:12px;font-weight:600;font-size:15.5px;
  border-bottom:1px solid var(--line);
}
.drawer-nav a:last-child{border-bottom:0;}
.drawer-nav a:hover{background:var(--paper-2);color:var(--brand);}
.drawer-nav a.is-active{color:var(--brand);background:var(--mist);}
.drawer-foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px;}

/* ---------- 通用块 ---------- */
.section{padding-top:56px;padding-bottom:56px;}
@media (min-width:768px){ .section{padding-top:72px;padding-bottom:72px;} }
@media (min-width:1024px){ .section{padding-top:96px;padding-bottom:96px;} }
.section-alt{background:var(--paper-2);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand);
  text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px;}
h2.section-title{font-size:28px;font-weight:700;letter-spacing:-.02em;line-height:1.2;}
@media (min-width:1024px){ h2.section-title{font-size:34px;} }
.section-sub{color:var(--ink-2);font-size:16px;margin-top:12px;max-width:680px;}
.tag{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;border-radius:var(--radius-chip);
  background:var(--mist);color:var(--brand);
  font-size:13px;font-weight:600;line-height:1;
}
.tag-dark{background:var(--ink);color:#fff;}
.card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-soft);
}
.divider{border-top:1px solid var(--line);}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding-top:22px;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);flex-wrap:wrap;}
.crumb a:hover{color:var(--brand);}
.crumb span.sep{color:#B9B2A4;}

/* ---------- Hero ---------- */
.hero{padding-top:26px;padding-bottom:56px;}
@media (min-width:1024px){ .hero{padding-bottom:80px;} }
.hero-grid{display:grid;gap:32px;align-items:start;}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:minmax(0,1.25fr) minmax(0,.85fr);gap:56px;align-items:center;}
}
.hero h1{
  font-size:30px;line-height:1.12;font-weight:800;letter-spacing:-.02em;margin-top:16px;
}
@media (min-width:768px){ .hero h1{font-size:40px;} }
@media (min-width:1024px){ .hero h1{font-size:52px;} }
.hero-lead{margin-top:18px;font-size:16.5px;color:var(--ink-2);max-width:620px;}
.hero-lead strong{color:var(--ink);font-weight:700;}
.hero-actions{display:flex;align-items:center;gap:22px;margin-top:30px;flex-wrap:wrap;}
.hero-figure{
  position:relative;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);background:var(--mist);
  aspect-ratio:4/3;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure figcaption{
  position:absolute;right:12px;bottom:12px;
  background:rgba(20,22,26,.82);color:#fff;
  font-size:12.5px;font-weight:600;padding:6px 10px;border-radius:var(--radius-chip);
}
.stat-row{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  margin-top:40px;
}
@media (min-width:768px){ .stat-row{grid-template-columns:repeat(4,minmax(0,1fr));} }
.stat{background:var(--paper);padding:20px 18px;}
.stat-num{font-size:22px;font-weight:800;letter-spacing:-.02em;color:var(--ink);}
.stat-num small{font-size:13px;font-weight:600;color:var(--ink-2);margin-left:4px;}
.stat-label{margin-top:6px;font-size:13px;color:var(--ink-2);}

/* ---------- 对照区 ---------- */
.compare{border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;overflow:hidden;}
.compare-head{
  display:grid;grid-template-columns:1fr;gap:0;
  background:var(--paper-2);border-bottom:1px solid var(--line);
}
@media (min-width:768px){ .compare-head{grid-template-columns:1fr 1fr;} }
.compare-head > div{padding:24px 22px;}
@media (min-width:768px){
  .compare-head > div + div{border-left:1px solid var(--line);}
}
.compare-head h3{font-size:19px;font-weight:700;margin-top:12px;}
.compare-head p{margin-top:8px;font-size:14.5px;color:var(--ink-2);}
.compare-item{
  display:grid;grid-template-columns:1fr;gap:0;
  border-bottom:1px solid var(--line);
}
.compare-item:last-child{border-bottom:0;}
@media (min-width:768px){
  .compare-item{grid-template-columns:1fr 1fr;}
  .compare-item .compare-cell + .compare-cell{border-left:1px solid var(--line);}
}
.compare-dim{
  grid-column:1 / -1;
  padding:18px 22px 0;
  font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--ink-2);
}
.compare-cell{padding:10px 22px 20px;font-size:16px;}
@media (max-width:767px){
  .compare-item .compare-cell + .compare-cell{border-top:1px dashed var(--line);padding-top:16px;margin-top:6px;}
}
.compare-cell .cell-title{font-weight:700;font-size:16.5px;}
.compare-cell .cell-note{margin-top:4px;font-size:14.5px;color:var(--ink-2);}

/* ---------- 核对清单 ---------- */
.check-grid{display:grid;gap:20px;}
@media (min-width:768px){ .check-grid{grid-template-columns:1fr 1fr;} }
.check-item{
  display:flex;gap:16px;align-items:flex-start;
  padding:22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  transition:transform .26s ease, box-shadow .26s ease, border-color .26s ease;
}
.check-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-float);border-color:var(--brand);}
.check-idx{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:var(--mist);color:var(--brand);font-weight:800;font-size:14px;
}
.check-item h3{font-size:17px;font-weight:700;}
.check-item p{margin-top:6px;font-size:14.5px;color:var(--ink-2);}

/* ---------- 版本要点列表 ---------- */
.version-list{border-top:1px solid var(--line);}
.version-row{
  display:grid;grid-template-columns:1fr;gap:8px;
  padding:20px 0;border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
@media (min-width:768px){
  .version-row{grid-template-columns:150px minmax(0,1fr) 130px;align-items:center;gap:24px;}
}
.version-row:hover{background:var(--paper-2);}
.version-no{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--brand);}
.version-text{font-size:16px;}
.version-date{font-size:13.5px;color:var(--ink-2);}
@media (min-width:768px){ .version-date{text-align:right;} }

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;font-size:17px;font-weight:700;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand);}
.faq-item.is-open{background:var(--mist);border-radius:12px;padding:0 18px;}
.faq-icon{
  position:relative;flex:0 0 auto;width:22px;height:22px;border-radius:999px;
  border:1px solid var(--line);background:#fff;
  transition:transform .26s ease, border-color .26s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:10px;height:1.8px;}
.faq-icon::after{width:1.8px;height:10px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);border-color:var(--brand);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease;}
.faq-a-inner{padding:0 4px 22px;font-size:16px;color:var(--ink-2);line-height:1.8;}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.cta-inner{
  display:grid;gap:28px;align-items:center;
  padding-top:56px;padding-bottom:56px;
}
@media (min-width:1024px){
  .cta-inner{grid-template-columns:minmax(0,1.6fr) auto auto;gap:44px;padding-top:72px;padding-bottom:72px;}
}
.cta-inner h2{font-size:26px;font-weight:800;letter-spacing:-.02em;line-height:1.2;}
@media (min-width:1024px){ .cta-inner h2{font-size:34px;} }
.cta-inner p{margin-top:12px;color:var(--ink-2);font-size:16px;max-width:560px;}
.qr-box{
  width:120px;height:120px;border-radius:var(--radius-img);
  background:#fff;border:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  text-align:center;font-size:12px;color:var(--ink-2);padding:10px;
}
.qr-grid{
  width:44px;height:44px;border-radius:8px;
  background:
    linear-gradient(90deg,var(--ink) 25%,transparent 25% 50%,var(--ink) 50% 75%,transparent 75%),
    linear-gradient(180deg,var(--ink) 25%,transparent 25% 50%,var(--ink) 50% 75%,transparent 75%);
  background-size:16px 16px;
  opacity:.82;
}

/* ---------- 推荐卡 ---------- */
.rec-grid{display:grid;gap:24px;}
@media (min-width:768px){ .rec-grid{grid-template-columns:1fr 1fr;} }
.rec-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  transition:transform .26s ease, box-shadow .26s ease, border-color .26s ease;
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-float);border-color:var(--brand);}
.rec-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--mist);}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .26s ease;}
.rec-card:hover .rec-thumb img{transform:scale(1.03);}
.rec-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.rec-body h3{font-size:18px;font-weight:700;line-height:1.45;}
.rec-body p{font-size:14.5px;color:var(--ink-2);}
.rec-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13.5px;color:var(--ink-2);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-deep);color:#E8EFEC;margin-top:0;}
.footer-grid{
  display:grid;gap:36px;padding:56px 0 40px;
}
@media (min-width:768px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;} }
.footer-brand{display:flex;align-items:center;gap:10px;}
.footer-brand .brand-mark{background:#fff;color:var(--brand-deep);}
.footer-brand .brand-text{font-size:15.5px;font-weight:700;color:#fff;}
.footer-desc{margin-top:14px;font-size:14px;color:rgba(232,239,236,.78);max-width:320px;line-height:1.8;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social span{
  width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.1);font-size:13px;color:#fff;
  transition:background .2s ease;
}
.footer-social span:hover{background:rgba(255,255,255,.22);}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-col a{display:block;font-size:14px;color:rgba(232,239,236,.78);padding:6px 0;transition:color .2s ease;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.16);
  padding:20px 0 28px;display:flex;gap:12px;flex-wrap:wrap;
  justify-content:space-between;font-size:13px;color:rgba(232,239,236,.7);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease, transform .42s ease;}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  .check-item:hover,.rec-card:hover{transform:none;}
  .rec-card:hover .rec-thumb img{transform:none;}
  .site-header{transition:none;}
  .faq-a{transition:none;}
}