/* roulang page: index */
:root{
  --brand-900:#0A2E2C;
  --brand-700:#0F4A46;
  --brand-600:#14655E;
  --brand-500:#1B8A7A;
  --brand-300:#7CC8BA;
  --accent-600:#C97A15;
  --accent-500:#F2A33C;
  --accent-200:#FFE3BC;
  --accent-50:#FFF7EA;
  --ink-900:#17201F;
  --ink-600:#4A5654;
  --ink-400:#8A9492;
  --bg:#F6F4EF;
  --card:#FFFFFF;
  --line:#E4E0D8;
  --grad:linear-gradient(135deg,#0F4A46 0%,#1B8A7A 55%,#2FB39B 100%);
  --sh:0 1px 2px rgba(10,46,44,.06),0 8px 24px rgba(10,46,44,.07);
  --sh-h:0 2px 4px rgba(10,46,44,.08),0 18px 40px rgba(10,46,44,.14);
  --r-lg:28px;
  --r:20px;
  --r-img:16px;
  --r-in:12px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-900);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input{font-family:inherit;font-size:inherit}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:3px}

/* ---------- 左侧导航 Shell ---------- */
.shell{
  position:fixed;
  top:0;left:0;
  height:100vh;
  width:280px;
  background:var(--brand-900);
  color:#DCEBE8;
  display:flex;
  flex-direction:column;
  z-index:50;
  transform:translateX(-100%);
  transition:transform .3s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;
}
.shell.is-open{transform:translateX(0)}
@media (min-width:1024px){
  .shell{width:256px;transform:translateX(0)}
}
.shell__brand{
  display:flex;align-items:center;gap:12px;
  padding:24px 20px 20px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.shell__mark{
  width:38px;height:38px;flex:none;
  border-radius:12px;
  background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(0,0,0,.28);
}
.shell__mark span{
  width:14px;height:14px;border:2.5px solid #fff;border-radius:4px;display:block;
  transform:rotate(45deg);
}
.shell__title{font-size:17px;font-weight:700;color:#fff;letter-spacing:.01em;line-height:1.3}
.shell__sub{font-size:11.5px;color:#8FB6B0;letter-spacing:.06em;line-height:1.4}
.shell__nav{padding:16px 12px;display:flex;flex-direction:column;gap:6px;flex:1}
.navlink{
  position:relative;
  display:flex;align-items:center;gap:12px;
  padding:11px 14px 11px 20px;
  border-radius:12px;
  font-size:15px;color:#C6DDD9;
  transition:background .2s ease,color .2s ease;
}
.navlink::before{
  content:"";position:absolute;left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:0;border-radius:3px;
  background:var(--accent-500);
  transition:height .2s ease;
}
.navlink:hover{background:rgba(255,255,255,.07);color:#fff}
.navlink:hover::before{height:16px}
.navlink.is-active{background:rgba(255,255,255,.1);color:#fff;font-weight:600}
.navlink.is-active::before{height:22px}
.navlink svg{flex:none;opacity:.85}
.shell__foot{
  padding:18px 20px 26px;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:12.5px;color:#8FB6B0;line-height:1.7;
}
.shell__foot a{color:#BFE0DA}
.shell__foot a:hover{color:var(--brand-300);text-decoration:underline;text-underline-offset:4px}
.shell__accentbar{height:4px;background:var(--grad);flex:none}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;
  height:56px;z-index:30;
  background:var(--brand-900);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;
}
@media (min-width:1024px){.topbar{display:none}}
.topbar__logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px}
.topbar__burger{
  width:40px;height:40px;border:0;border-radius:10px;
  background:rgba(255,255,255,.1);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  cursor:pointer;transition:background .2s ease;
}
.topbar__burger:hover{background:rgba(255,255,255,.18)}
.topbar__burger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px}
.overlay{
  position:fixed;inset:0;z-index:40;
  background:rgba(10,46,44,.55);
  opacity:0;visibility:hidden;
  transition:opacity .3s ease,visibility .3s ease;
}
.overlay.is-open{opacity:1;visibility:visible}
@media (min-width:1024px){.overlay{display:none}}

/* ---------- 主内容区 ---------- */
.main{padding-top:56px}
@media (min-width:1024px){
  .main{padding-top:0;margin-left:256px}
}
.container{max-width:1120px;margin:0 auto;padding:0 24px}
@media (min-width:1024px){.container{padding:0 40px}}

.sec{margin-top:56px}
@media (min-width:1024px){.sec{margin-top:100px}}

/* ---------- 通用排版 ---------- */
.h2{
  position:relative;
  font-size:26px;font-weight:700;line-height:1.3;
  padding-left:16px;
  letter-spacing:-.01em;
}
@media (min-width:1024px){.h2{font-size:30px}}
.h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;
  width:4px;border-radius:3px;background:var(--brand-500);
}
.h3{font-size:20px;font-weight:600;line-height:1.4}
.sub{font-size:14.5px;color:var(--ink-600);margin-top:10px;max-width:640px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-600);
  letter-spacing:.04em;margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--brand-500);border-radius:2px}
.body-text{font-size:15.5px;color:var(--ink-600);line-height:1.85}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:999px;border:0;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,filter .22s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(27,138,122,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(27,138,122,.34);filter:brightness(1.06)}
.btn-primary:active{transform:scale(.98);background:var(--brand-600)}
.btn-ghost{background:transparent;color:var(--brand-500);border:1.5px solid var(--brand-500)}
.btn-ghost:hover{background:var(--brand-500);color:#fff;transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--brand-600);box-shadow:0 8px 20px rgba(0,0,0,.16)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(0,0,0,.22)}
.btn-outline-light{background:rgba(255,255,255,.12);color:#fff;border:1.5px solid rgba(255,255,255,.55)}
.btn-outline-light:hover{background:rgba(255,255,255,.22);transform:translateY(-2px)}
.link-more{
  font-size:14px;font-weight:600;color:var(--brand-600);
  white-space:nowrap;
}
.link-more:hover{color:var(--brand-500);text-decoration:underline;text-underline-offset:4px}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;
  background:var(--accent-200);color:var(--brand-600);
  font-size:12.5px;font-weight:600;
  padding:5px 12px;border-radius:999px;
  line-height:1.5;
}
.pill-light{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.3);
  color:#fff;font-size:13px;font-weight:600;
  padding:6px 14px;border-radius:999px;
  backdrop-filter:blur(2px);
}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  min-height:60vh;
  margin-top:24px;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  box-shadow:var(--sh);
}
@media (min-width:1024px){.hero{min-height:66vh;margin-top:36px}}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(15,74,70,.90) 0%,rgba(27,138,122,.84) 55%,rgba(47,179,155,.74) 100%);
}
.hero__inner{
  position:relative;z-index:2;
  height:100%;
  padding:34px 24px 30px;
  display:grid;
  gap:28px;
  align-items:end;
}
@media (min-width:768px){.hero__inner{padding:48px 44px 42px}}
@media (min-width:1024px){
  .hero__inner{grid-template-columns:1.55fr 1fr;padding:56px;gap:40px}
}
.hero h1{
  color:#fff;
  font-size:30px;font-weight:700;line-height:1.22;
  letter-spacing:-.01em;
  margin-top:18px;
}
@media (min-width:768px){.hero h1{font-size:38px}}
@media (min-width:1024px){.hero h1{font-size:46px}}
.hero__lead{
  color:rgba(255,255,255,.9);
  font-size:15.5px;line-height:1.85;
  margin-top:16px;max-width:560px;
}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero__float{
  background:rgba(255,255,255,.96);
  border-radius:var(--r);
  padding:16px;
  display:flex;align-items:center;gap:14px;
  box-shadow:0 18px 40px rgba(0,0,0,.22);
}
@media (max-width:1023px){.hero__float{display:none}}
.hero__float img{width:76px;height:64px;object-fit:cover;border-radius:14px;flex:none}
.hero__float b{display:block;font-size:14.5px;color:var(--ink-900);font-weight:700;line-height:1.45}
.hero__float small{display:block;font-size:12.5px;color:var(--ink-400);margin-top:4px}
.hero__badge{
  position:relative;z-index:2;
  margin:0 24px 28px;
  display:inline-flex;align-items:center;gap:12px;
  background:var(--accent-200);
  border-radius:999px;
  padding:10px 20px;
  max-width:calc(100% - 48px);
}
@media (min-width:768px){.hero__badge{margin:0 44px 34px}}
@media (min-width:1024px){.hero__badge{margin:0 56px 40px}}
.hero__badge b{font-size:20px;color:var(--accent-600);font-variant-numeric:tabular-nums;font-weight:800}
.hero__badge span{font-size:13.5px;color:var(--brand-700);font-weight:600}

/* ---------- 卡片 ---------- */
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:var(--sh);
  transition:transform .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}

/* ---------- 图文交替 ---------- */
.story{
  display:grid;
  gap:28px;
  align-items:center;
}
@media (min-width:900px){
  .story{grid-template-columns:1fr 1fr;gap:56px}
  .story--flip .story__media{order:2}
}
.story__media{position:relative}
.story__media img{
  border-radius:var(--r);
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  position:relative;z-index:2;
  box-shadow:var(--sh);
}
.story__media::after{
  content:"";position:absolute;
  left:16px;top:16px;right:-16px;bottom:-16px;
  border:2px solid var(--brand-300);
  border-radius:var(--r);
  z-index:1;
}
.story__body h3{font-size:22px;font-weight:700;line-height:1.4;margin-bottom:14px}
.story__body p + p{margin-top:12px}
.story__link{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:18px;font-size:14.5px;font-weight:600;color:var(--brand-600);
}
.story__link:hover{color:var(--brand-500);text-decoration:underline;text-underline-offset:4px}

/* ---------- 精选卡 ---------- */
.feature-grid{display:grid;gap:20px}
@media (min-width:900px){.feature-grid{grid-template-columns:repeat(12,1fr)}}
.feature-main{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  min-height:300px;
  display:flex;align-items:flex-end;
  box-shadow:var(--sh);
  transition:transform .25s ease,box-shadow .25s ease;
}
@media (min-width:900px){.feature-main{grid-column:span 7;min-height:420px}}
.feature-main:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.feature-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.feature-main::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,46,44,.15) 0%,rgba(10,46,44,.86) 100%);
}
.feature-main__body{position:relative;z-index:2;padding:26px}
@media (min-width:900px){.feature-main__body{padding:34px}}
.feature-main__body h3{color:#fff;font-size:23px;font-weight:700;line-height:1.35;margin-top:12px}
.feature-main__body p{color:rgba(255,255,255,.86);font-size:14.5px;margin-top:10px}
.feature-side{display:grid;gap:20px;align-content:start}
@media (min-width:900px){.feature-side{grid-column:span 5}}
.feature-small{
  display:flex;gap:16px;align-items:center;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r);padding:16px;
  box-shadow:var(--sh);
  transition:transform .25s ease,box-shadow .25s ease;
}
.feature-small:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.feature-small img{width:112px;height:96px;object-fit:cover;border-radius:var(--r-img);flex:none}
.feature-small h3{font-size:16.5px;font-weight:600;line-height:1.45;margin-top:8px}
.feature-small:hover h3{color:var(--brand-600)}
.feature-small p{font-size:13px;color:var(--ink-400);margin-top:6px}

/* ---------- 最新信息列表 ---------- */
.news-list{display:flex;flex-direction:column;gap:16px}
.news-lead{
  display:grid;gap:20px;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:18px;
  box-shadow:var(--sh);
  transition:transform .25s ease,box-shadow .25s ease;
}
@media (min-width:768px){.news-lead{grid-template-columns:340px 1fr;padding:20px;gap:26px}}
.news-lead:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.news-lead img{width:100%;height:100%;min-height:190px;object-fit:cover;border-radius:var(--r-img)}
.news-lead h3{font-size:21px;font-weight:700;line-height:1.4;margin-top:12px}
@media (min-width:768px){.news-lead h3{font-size:24px}}
.news-lead:hover h3{color:var(--brand-600)}
.news-lead p{font-size:14.5px;color:var(--ink-600);margin-top:12px;line-height:1.8}
.news-lead time{display:block;font-size:13px;color:var(--ink-400);margin-top:14px;font-variant-numeric:tabular-nums}
.news-row{
  display:flex;gap:18px;align-items:center;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r);padding:16px;
  box-shadow:var(--sh);
  transition:transform .25s ease,box-shadow .25s ease;
}
.news-row:hover{transform:translateY(-3px);box-shadow:var(--sh-h)}
.news-row img{width:160px;height:104px;object-fit:cover;border-radius:var(--r-img);flex:none}
.news-row h3{font-size:17px;font-weight:600;line-height:1.5;margin-top:8px}
.news-row:hover h3{color:var(--brand-600)}
.news-row p{
  font-size:13.5px;color:var(--ink-600);margin-top:6px;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-row time{display:block;font-size:12.5px;color:var(--ink-400);margin-top:8px;font-variant-numeric:tabular-nums}
@media (max-width:640px){
  .news-row{flex-direction:column;align-items:stretch;padding:20px}
  .news-row img{width:100%;height:180px}
}
.news-empty{
  background:var(--card);border:1px dashed var(--line);
  border-radius:var(--r);padding:48px 24px;text-align:center;
}
.news-empty b{display:block;font-size:16px;font-weight:600;color:var(--ink-900)}
.news-empty p{font-size:14px;color:var(--ink-400);margin-top:8px}
.news-empty .btn{margin-top:20px}

/* ---------- 数据徽章 ---------- */
.stats{display:grid;gap:16px;grid-template-columns:repeat(2,1fr)}
@media (min-width:900px){.stats{grid-template-columns:repeat(4,1fr)}}
.stat{
  background:var(--accent-50);
  border:1px solid #F3E1C4;
  border-radius:var(--r);
  padding:22px 20px;
  transition:transform .25s ease,box-shadow .25s ease;
}
.stat:hover{transform:translateY(-3px);box-shadow:var(--sh)}
.stat b{
  display:block;font-size:28px;font-weight:800;
  color:var(--accent-600);line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.stat b i{font-size:14px;font-style:normal;font-weight:600;margin-left:3px}
.stat span{display:block;font-size:13.5px;color:var(--ink-600);margin-top:8px}
.stats-note{font-size:13.5px;color:var(--ink-400);margin-top:16px}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:var(--sh);
  overflow:hidden;
}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;
  font-size:16px;font-weight:600;color:var(--ink-900);
  transition:background .2s ease;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{background:#FBF9F5}
.faq summary::after{
  content:"+";
  font-size:22px;font-weight:400;color:var(--brand-500);
  line-height:1;flex:none;
}
.faq[open] summary::after{content:"−"}
.faq[open] summary{color:var(--brand-600)}
.faq__body{padding:0 22px 20px;font-size:14.5px;color:var(--ink-600);line-height:1.85}

/* ---------- CTA ---------- */
.cta{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  background:var(--grad);
  padding:36px 24px;
  box-shadow:0 20px 44px rgba(19,102,94,.24);
}
@media (min-width:768px){.cta{padding:48px 46px}}
.cta__grid{display:grid;gap:28px;align-items:center}
@media (min-width:900px){.cta__grid{grid-template-columns:1.1fr 1fr;gap:48px}}
.cta h2{color:#fff;font-size:24px;font-weight:700;line-height:1.35}
@media (min-width:768px){.cta h2{font-size:30px}}
.cta p{color:rgba(255,255,255,.88);font-size:14.5px;line-height:1.85;margin-top:14px}
.cta__form{display:flex;flex-direction:column;gap:12px}
.cta__row{display:flex;gap:12px;flex-wrap:wrap}
.cta input{
  flex:1;min-width:200px;
  background:#fff;border:1.5px solid transparent;
  border-radius:var(--r-in);
  padding:13px 16px;font-size:14.5px;color:var(--ink-900);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.cta input::placeholder{color:var(--ink-400)}
.cta input:focus{outline:none;border-color:var(--brand-300);box-shadow:0 0 0 4px rgba(124,200,186,.35)}
.cta__hint{font-size:12.5px;color:rgba(255,255,255,.75)}

/* ---------- 页脚 ---------- */
.footer{
  margin-top:72px;
  background:var(--brand-900);
  color:#B9D4CF;
}
@media (min-width:1024px){.footer{margin-top:110px}}
.footer__bar{height:4px;background:var(--grad)}
.footer__grid{
  display:grid;gap:32px;
  padding:44px 0 32px;
}
@media (min-width:768px){.footer__grid{grid-template-columns:1.4fr 1fr 1fr}}
.footer__brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.footer__brand span{
  width:34px;height:34px;border-radius:10px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;flex:none;
}
.footer__brand span i{width:12px;height:12px;border:2.5px solid #fff;border-radius:4px;display:block;transform:rotate(45deg)}
.footer__brand b{color:#fff;font-size:17px}
.footer p{font-size:13.5px;line-height:1.8;color:#9DBDB8}
.footer h4{color:#fff;font-size:14.5px;font-weight:600;margin-bottom:14px}
.footer__links{display:flex;flex-direction:column;gap:10px}
.footer__links a{font-size:13.5px;color:#B9D4CF}
.footer__links a:hover{color:var(--brand-300)}
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:#8FB6B0;
}
.footer__bottom a{color:#8FB6B0}
.footer__bottom a:hover{color:var(--brand-300)}

@media (max-width:640px){
  .btn{width:100%}
  .hero__actions .btn{width:100%}
  .cta__row .btn{width:100%}
}

/* roulang page: article */
:root{
  --brand-900:#0A2E2C;
  --brand-600:#14655E;
  --brand-500:#1B8A7A;
  --brand-300:#7CC8BA;
  --accent-500:#F2A33C;
  --accent-200:#FFE3BC;
  --ink-900:#17201F;
  --ink-600:#4A5654;
  --ink-400:#8A9492;
  --bg:#F6F4EF;
  --card:#FFFFFF;
  --line:#E4E0D8;
  --r-lg:28px;
  --r-md:20px;
  --r-sm:16px;
  --shadow-soft:0 1px 2px rgba(10,46,44,.06),0 8px 24px rgba(10,46,44,.07);
  --shadow-lift:0 2px 4px rgba(10,46,44,.08),0 18px 40px rgba(10,46,44,.14);
  --grad:linear-gradient(135deg,#0F4A46 0%,#1B8A7A 55%,#2FB39B 100%);
  --shell-w:256px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-900);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
a:hover{color:var(--brand-600)}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1120px;margin:0 auto;padding:0 24px}
@media (min-width:1024px){.container{padding:0 40px}}
.num{font-variant-numeric:tabular-nums;font-weight:600}

/* ============ 左侧导航外壳 ============ */
.shell{
  position:fixed;top:0;left:0;bottom:0;width:var(--shell-w);
  background:var(--brand-900);color:#E9F2F0;
  display:flex;flex-direction:column;z-index:60;
  transition:transform .28s ease;
}
.shell::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:4px;background:var(--grad);
}
.shell__inner{display:flex;flex-direction:column;height:100%;padding:26px 18px 22px;overflow-y:auto}
.shell__logo{display:flex;align-items:center;gap:10px;padding:6px 8px 20px;color:#fff;font-size:18px;font-weight:700;letter-spacing:.01em}
.shell__logo:hover{color:#fff}
.shell__mark{
  width:34px;height:34px;border-radius:11px;background:var(--grad);
  display:grid;place-items:center;flex:none;box-shadow:0 6px 16px rgba(0,0,0,.28);
}
.shell__mark i{width:12px;height:12px;border:2px solid #FFE3BC;border-radius:4px;transform:rotate(45deg);display:block}
.shell__nav{display:flex;flex-direction:column;gap:4px;margin-top:6px}
.navlink{
  position:relative;display:flex;align-items:center;gap:11px;
  padding:11px 12px 11px 16px;border-radius:12px;
  color:#BFD6D2;font-size:15px;font-weight:500;
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.navlink::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);
  width:3px;height:20px;border-radius:3px;background:var(--accent-500);
  transition:transform .18s ease;
}
.navlink:hover{background:rgba(255,255,255,.07);color:#fff}
.navlink:hover::before{transform:translateY(-50%) scaleY(1)}
.navlink.is-active{background:rgba(255,255,255,.1);color:#fff}
.navlink.is-active::before{transform:translateY(-50%) scaleY(1)}
.shell__extra{margin-top:auto;padding-top:22px;border-top:1px solid rgba(255,255,255,.12)}
.shell__extra a{display:block;font-size:13.5px;color:#9FBAB6;padding:7px 16px;border-radius:10px;transition:color .18s ease,background .18s ease}
.shell__extra a:hover{color:#fff;background:rgba(255,255,255,.06)}
.shell__extra p{margin:14px 16px 0;font-size:12.5px;line-height:1.7;color:#7E9995}

/* 移动端顶栏与抽屉 */
.topbar{
  position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;background:var(--brand-900);color:#fff;
  box-shadow:0 4px 16px rgba(10,46,44,.22);
}
.topbar__brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:16px;color:#fff}
.topbar__brand .shell__mark{width:28px;height:28px;border-radius:9px}
.topbar__brand .shell__mark i{width:10px;height:10px;border-width:2px}
.topbar__btn{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;color:#fff;transition:background .18s ease}
.topbar__btn:hover{background:rgba(255,255,255,.12)}
.overlay{
  position:fixed;inset:0;z-index:55;background:rgba(10,46,44,.55);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
}
.overlay.is-open{opacity:1;visibility:visible}

.main{padding-top:56px;min-height:100vh}
@media (min-width:1024px){
  .topbar{display:none}
  .overlay{display:none}
  .main{padding-top:0;margin-left:var(--shell-w)}
}
@media (max-width:1023px){
  .shell{width:280px;transform:translateX(-100%);box-shadow:0 0 40px rgba(0,0,0,.35)}
  .shell.is-open{transform:translateX(0)}
}

/* ============ 区块与卡片 ============ */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:72px 0}}
.card{
  background:var(--card);border-radius:var(--r-md);
  box-shadow:var(--shadow-soft);border:1px solid var(--line);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;padding:12px 26px;font-size:15px;font-weight:600;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(27,138,122,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(27,138,122,.34);color:#fff}
.btn-primary:active{transform:scale(.98);background:var(--brand-600)}
.btn-ghost{background:transparent;color:var(--brand-500);box-shadow:inset 0 0 0 1px var(--brand-500)}
.btn-ghost:hover{background:var(--brand-500);color:#fff}
.btn-text{color:var(--brand-600);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.btn-text:hover{color:var(--brand-500);text-decoration:underline;text-underline-offset:4px}

.chip{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--accent-200);color:var(--brand-600);
  border-radius:999px;padding:4px 12px;font-size:12.5px;font-weight:600;line-height:1.6;
}
.chip--line{background:transparent;color:var(--brand-600);box-shadow:inset 0 0 0 1px var(--brand-300)}
.meta{font-size:13px;color:var(--ink-400)}
.meta .num{color:var(--ink-600)}

/* 面包屑 */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400)}
.crumb a{color:var(--ink-600);transition:color .18s ease}
.crumb a:hover{color:var(--brand-500);text-decoration:underline;text-underline-offset:4px}
.crumb span.sep{color:var(--line)}
.crumb .current{color:var(--ink-400)}

/* 文章头部 */
.article-head{position:relative;overflow:hidden;border-radius:var(--r-lg);background:var(--card);box-shadow:var(--shadow-soft);border:1px solid var(--line);padding:28px 24px}
.article-head::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad)}
@media (min-width:768px){.article-head{padding:40px 44px}}
.article-title{
  margin:18px 0 16px;font-size:28px;line-height:1.28;font-weight:700;letter-spacing:-.01em;color:var(--brand-900);
}
@media (min-width:768px){.article-title{font-size:42px;line-height:1.2}}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;font-size:13px;color:var(--ink-400);padding-top:14px;border-top:1px dashed var(--line)}
.article-meta b{color:var(--ink-600);font-weight:600}

/* 正文排版 */
.reading{max-width:760px;margin:0 auto}
.prose-article{font-size:16.5px;line-height:1.9;color:var(--ink-900)}
.prose-article > *:first-child{margin-top:0}
.prose-article p{margin:16px 0;color:var(--ink-900)}
.prose-article h2{
  margin:44px 0 16px;font-size:27px;line-height:1.35;font-weight:700;color:var(--brand-900);
  padding-left:14px;border-left:4px solid var(--brand-500);letter-spacing:-.01em;
}
.prose-article h3{margin:32px 0 12px;font-size:21px;font-weight:600;color:var(--brand-900)}
.prose-article h4{margin:24px 0 10px;font-size:17px;font-weight:600;color:var(--brand-600)}
.prose-article ul,.prose-article ol{margin:16px 0;padding-left:22px}
.prose-article li{margin:8px 0;color:var(--ink-600)}
.prose-article li::marker{color:var(--brand-500)}
.prose-article strong{color:var(--brand-900);font-weight:700}
.prose-article blockquote{
  margin:26px 0;padding:18px 22px;background:#fff;border-left:3px solid var(--brand-300);
  border-radius:14px;color:var(--ink-600);box-shadow:var(--shadow-soft);
}
.prose-article blockquote p{margin:6px 0;color:var(--ink-600)}
.prose-article img{border-radius:var(--r-sm);margin:24px 0;box-shadow:var(--shadow-soft);width:100%;height:auto}
.prose-article figure{margin:26px 0}
.prose-article figcaption{margin-top:10px;font-size:13px;color:var(--ink-400);text-align:center}
.prose-article hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.prose-article a{color:var(--brand-600);text-decoration:underline;text-underline-offset:4px}
.prose-article a:hover{color:var(--brand-500)}
.prose-article code{background:#EFEDE6;border-radius:6px;padding:2px 6px;font-size:14px}
.prose-article table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.prose-article th,.prose-article td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.prose-article th{background:#F1EFE8;color:var(--brand-900)}

/* 空态 */
.empty-state{
  text-align:center;padding:56px 24px;background:var(--card);border:1px dashed var(--line);
  border-radius:var(--r-lg);box-shadow:var(--shadow-soft);
}
.empty-state .glyph{
  width:60px;height:60px;margin:0 auto 18px;border-radius:18px;background:var(--accent-200);
  display:grid;place-items:center;color:var(--brand-600);
}
.empty-state h2{margin:0 0 8px;font-size:22px;color:var(--brand-900)}
.empty-state p{margin:0 0 22px;color:var(--ink-600);font-size:15px}

/* 标签与分享 */
.tagrow{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.tag{
  display:inline-flex;align-items:center;background:var(--accent-200);color:var(--brand-600);
  border-radius:999px;padding:5px 14px;font-size:13px;font-weight:600;
  transition:transform .18s ease,background .18s ease;
}
.tag:hover{background:#FFD79A;transform:translateY(-1px)}
.iconbtns{display:flex;gap:10px}
.iconbtn{
  width:42px;height:42px;border-radius:14px;display:grid;place-items:center;
  background:#fff;box-shadow:inset 0 0 0 1px var(--line);color:var(--brand-600);
  transition:transform .18s ease,box-shadow .18s ease,color .18s ease,background .18s ease;
}
.iconbtn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lift);color:var(--brand-500)}
.iconbtn.is-on{background:var(--brand-500);color:#fff;box-shadow:none}

/* CTA 渐变条 */
.cta-band{
  border-radius:var(--r-lg);background:var(--grad);color:#fff;overflow:hidden;position:relative;
  padding:34px 26px;box-shadow:var(--shadow-soft);
}
@media (min-width:768px){.cta-band{padding:46px 48px}}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:rgba(255,255,255,.08);
}
.cta-band h2{margin:0 0 10px;font-size:26px;font-weight:700;color:#fff}
.cta-band p{margin:0 0 22px;color:rgba(255,255,255,.88);font-size:15px;max-width:560px}
.cta-form{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:2}
.cta-form input{
  flex:1 1 260px;min-width:0;border-radius:12px;border:1px solid transparent;background:#fff;
  padding:13px 18px;font-size:15px;color:var(--ink-900);transition:box-shadow .18s ease;
}
.cta-form input::placeholder{color:var(--ink-400)}
.cta-form input:focus{outline:none;box-shadow:0 0 0 2px var(--accent-500),0 0 0 6px rgba(242,163,60,.25)}
.cta-form .btn{background:#fff;color:var(--brand-600);box-shadow:0 10px 24px rgba(0,0,0,.16)}
.cta-form .btn:hover{background:#F3FBF9;color:var(--brand-600)}
.form-note{margin-top:14px;font-size:13.5px;color:var(--accent-200);min-height:20px}

/* 相关推荐 */
.rel-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media (min-width:768px){.rel-grid{grid-template-columns:repeat(3,1fr)}}
.rel-card{
  display:flex;flex-direction:column;background:var(--card);border-radius:var(--r-md);
  overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-soft);
  transition:transform .22s ease,box-shadow .22s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift)}
.rel-card img{height:150px;width:100%;object-fit:cover}
.rel-card__body{padding:20px 22px 22px}
.rel-card__body h3{margin:12px 0 8px;font-size:17px;line-height:1.5;color:var(--brand-900);font-weight:600}
.rel-card:hover h3{color:var(--brand-600)}

/* 页脚 */
.footer{background:var(--brand-900);color:#BFD6D2;margin-top:24px}
.footer__bar{height:4px;background:var(--grad)}
.footer__grid{display:grid;gap:34px;grid-template-columns:1fr;padding:52px 0 34px}
@media (min-width:768px){.footer__grid{grid-template-columns:1.4fr 1fr 1fr}}
.footer__brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:14px}
.footer__brand span{width:30px;height:30px;border-radius:10px;background:var(--grad);display:grid;place-items:center}
.footer__brand i{width:11px;height:11px;border:2px solid #FFE3BC;border-radius:4px;transform:rotate(45deg);display:block}
.footer p{margin:0;font-size:14px;line-height:1.8;color:#9FBAB6;max-width:380px}
.footer h4{margin:0 0 14px;font-size:14px;color:#fff;font-weight:600;letter-spacing:.02em}
.footer__links{display:flex;flex-direction:column;gap:9px}
.footer__links a{font-size:14px;color:#BFD6D2;transition:color .18s ease}
.footer__links a:hover{color:var(--brand-300)}
.footer__bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  padding:18px 0 26px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:#7E9995;
}
.footer__bottom a{color:#9FBAB6}
.footer__bottom a:hover{color:var(--brand-300)}

/* roulang page: category1 */
:root{
    --brand-900:#0A2E2C;
    --brand-600:#14655E;
    --brand-500:#1B8A7A;
    --brand-300:#7CC8BA;
    --accent-500:#F2A33C;
    --accent-200:#FFE3BC;
    --ink-900:#17201F;
    --ink-600:#4A5654;
    --ink-400:#8A9492;
    --bg:#F6F4EF;
    --card:#FFFFFF;
    --line:#E4E0D8;
    --grad:linear-gradient(135deg,#0F4A46 0%,#1B8A7A 55%,#2FB39B 100%);
    --shadow-sm:0 1px 2px rgba(10,46,44,.06),0 8px 24px rgba(10,46,44,.07);
    --shadow-lg:0 2px 4px rgba(10,46,44,.08),0 18px 40px rgba(10,46,44,.14);
    --r-lg:28px;
    --r-md:20px;
    --r-sm:16px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink-900);
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border-radius:var(--r-sm)}
  a{color:var(--brand-600);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease}
  a:hover{color:var(--brand-500)}
  button{font:inherit;cursor:pointer}
  input{font:inherit}
  h1,h2,h3,h4,p,ul,ol{margin:0}
  ul,ol{padding-left:0;list-style:none}

  .container{width:100%;max-width:1120px;margin:0 auto;padding:0 24px}

  /* ---------- 移动端顶栏 ---------- */
  .topbar{
    position:fixed;top:0;left:0;right:0;height:56px;z-index:40;
    display:flex;align-items:center;justify-content:space-between;
    padding:0 16px;background:#fff;border-bottom:1px solid var(--line);
  }
  .topbar__brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--brand-900);letter-spacing:.01em}
  .topbar__mark{
    width:26px;height:26px;border-radius:8px;background:var(--grad);
    display:flex;align-items:center;justify-content:center;position:relative;flex:none;
  }
  .topbar__mark i{display:block;width:11px;height:11px;border:2px solid #fff;border-radius:3px}
  .topbar__btn{
    width:40px;height:40px;border:1px solid var(--line);border-radius:12px;background:#fff;
    display:flex;align-items:center;justify-content:center;color:var(--brand-900);
  }
  .topbar__btn:hover{background:#F2F7F6;color:var(--brand-600)}

  .mask{
    position:fixed;inset:0;background:rgba(10,46,44,.55);
    opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:55;
  }
  .mask.is-show{opacity:1;pointer-events:auto}

  /* ---------- 左侧 App Shell ---------- */
  .shell{
    position:fixed;top:0;left:0;bottom:0;width:256px;z-index:60;
    background:var(--brand-900);color:#E9F2F0;
    display:flex;flex-direction:column;
    padding:26px 18px 20px;
    transform:translateX(-100%);transition:transform .28s ease;
    overflow-y:auto;
  }
  .shell.is-open{transform:translateX(0)}
  .shell__logo{display:flex;align-items:center;gap:12px;padding:0 8px 22px;border-bottom:1px solid rgba(255,255,255,.12)}
  .shell__mark{
    width:36px;height:36px;border-radius:12px;background:var(--grad);flex:none;
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 6px 16px rgba(0,0,0,.28);
  }
  .shell__mark i{display:block;width:15px;height:15px;border:2px solid #fff;border-radius:4px}
  .shell__logo b{color:#fff;font-size:17px;letter-spacing:.02em;font-weight:700}
  .shell__logo span{display:block;font-size:11px;color:var(--brand-300);letter-spacing:.08em;margin-top:2px}

  .shell__nav{display:flex;flex-direction:column;gap:6px;margin-top:22px}
  .navlink{
    position:relative;display:flex;align-items:center;gap:12px;
    padding:12px 14px;border-radius:12px;
    color:#CFE3DF;font-size:15px;line-height:1;
    transition:background-color .2s ease,color .2s ease;
  }
  .navlink svg{flex:none;color:var(--brand-300);transition:color .2s ease}
  .navlink::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:3px;height:0;border-radius:0 3px 3px 0;background:var(--accent-500);
    transition:height .22s ease;
  }
  .navlink:hover{background:rgba(255,255,255,.08);color:#fff}
  .navlink:hover svg{color:var(--accent-500)}
  .navlink:hover::before{height:22px}
  .navlink.is-active{background:rgba(255,255,255,.12);color:#fff;font-weight:600}
  .navlink.is-active svg{color:var(--accent-500)}
  .navlink.is-active::before{height:26px}
  .navlink:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px}

  .shell__foot{margin-top:auto;padding-top:22px}
  .shell__rule{height:1px;background:rgba(255,255,255,.14)}
  .shell__foot p{font-size:12.5px;line-height:1.7;color:#9FBAB6;margin-top:16px;padding:0 8px}
  .shell__short{display:flex;flex-direction:column;gap:8px;margin-top:14px}
  .shell__short a{font-size:13px;color:#CFE3DF;padding:6px 8px;border-radius:8px}
  .shell__short a:hover{background:rgba(255,255,255,.08);color:#fff}

  /* ---------- 主内容 ---------- */
  .page{padding-top:56px;overflow-x:hidden}
  .page__inner{width:100%;max-width:1120px;margin:0 auto;padding:0 24px}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;overflow:hidden;border-radius:var(--r-md);
    margin-top:24px;padding:48px 32px 96px;
    background-image:linear-gradient(135deg,rgba(15,74,70,.88) 0%,rgba(27,138,122,.82) 55%,rgba(47,179,155,.78) 100%),url("/assets/images/backpic/back-1.webp");
    background-size:cover;background-position:center;
    color:#fff;box-shadow:var(--shadow-sm);
  }
  .hero__eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
    color:#EAF6F3;font-size:13px;padding:6px 14px;border-radius:999px;
  }
  .hero h1{
    font-size:32px;line-height:1.22;font-weight:700;letter-spacing:-.01em;
    margin-top:20px;max-width:18em;
  }
  .hero__lead{
    margin-top:18px;max-width:34em;font-size:15.5px;line-height:1.85;color:#DFF1ED;
  }
  .hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:13px 28px;border-radius:999px;border:1px solid transparent;
    font-size:15px;font-weight:600;line-height:1;
    transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease;
  }
  .btn--primary{background:var(--grad);color:#fff;box-shadow:0 10px 26px rgba(10,46,44,.28)}
  .btn--primary:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(10,46,44,.36);color:#fff}
  .btn--primary:active{transform:scale(.98)}
  .btn--ghost{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
  .btn--ghost:hover{background:rgba(255,255,255,.16);color:#fff}
  .btn--outline{background:transparent;border-color:var(--brand-500);color:var(--brand-600)}
  .btn--outline:hover{background:var(--brand-500);color:#fff}
  .btn:focus-visible{outline:2px solid var(--accent-500);outline-offset:3px}

  .hero__float{
    position:absolute;right:32px;bottom:32px;width:min(300px,74%);
    background:rgba(255,255,255,.96);color:var(--ink-900);
    border-radius:var(--r-sm);padding:14px;
    display:flex;gap:12px;align-items:center;
    box-shadow:var(--shadow-lg);
  }
  .hero__float img{width:76px;height:60px;object-fit:cover;flex:none}
  .hero__float p{font-size:13px;line-height:1.6;color:var(--ink-600)}
  .hero__float b{display:block;font-size:13.5px;color:var(--brand-900);margin-bottom:3px}
  .hero__badge{
    position:absolute;left:32px;bottom:36px;
    display:inline-flex;align-items:center;gap:8px;
    background:var(--accent-200);color:#7A4A0A;
    font-size:13px;font-weight:600;padding:8px 16px;border-radius:999px;
  }
  .hero__badge b{color:#B4690E;font-variant-numeric:tabular-nums;font-weight:800}

  /* ---------- 通用板块 ---------- */
  .section{margin-top:64px}
  .section__head{max-width:52em}
  .section__kicker{
    font-size:13px;letter-spacing:.14em;color:var(--brand-500);font-weight:600;
  }
  .section h2{
    position:relative;font-size:26px;line-height:1.35;font-weight:700;
    padding-left:16px;margin-top:10px;color:var(--brand-900);
  }
  .section h2::before{
    content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:4px;
    background:var(--brand-500);
  }
  .section__desc{margin-top:14px;color:var(--ink-600);font-size:15.5px}

  /* ---------- 图文交替块 ---------- */
  .split{display:grid;gap:32px;align-items:center;margin-top:36px}
  .split__media{position:relative}
  .split__media img{
    border-radius:var(--r-md);width:100%;height:280px;object-fit:cover;
    box-shadow:var(--shadow-sm);
  }
  .split__media::after{
    content:"";position:absolute;inset:auto -10px -10px auto;
    width:88px;height:88px;border:2px solid var(--brand-300);border-radius:var(--r-sm);
    z-index:-1;
  }
  .split h3{font-size:20px;font-weight:600;color:var(--brand-900)}
  .split p{margin-top:14px;color:var(--ink-600);font-size:15.5px}
  .arrow-link{
    display:inline-flex;align-items:center;gap:8px;margin-top:20px;
    font-weight:600;color:var(--brand-600);font-size:15px;
  }
  .arrow-link:hover{color:var(--brand-500)}
  .arrow-link:hover span{transform:translateX(4px)}
  .arrow-link span{transition:transform .2s ease}

  /* ---------- 时间轴 ---------- */
  .timeline{
    margin-top:36px;display:grid;gap:18px;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
    padding:32px 28px;box-shadow:var(--shadow-sm);
  }
  .tstep{position:relative;padding-left:56px}
  .tstep::before{
    content:attr(data-step);
    position:absolute;left:0;top:0;width:36px;height:36px;border-radius:12px;
    background:var(--accent-200);color:#8A5210;font-weight:800;font-size:14px;
    display:flex;align-items:center;justify-content:center;
    font-variant-numeric:tabular-nums;
  }
  .tstep::after{
    content:"";position:absolute;left:17px;top:44px;bottom:-18px;width:2px;
    background:linear-gradient(180deg,var(--brand-300),rgba(124,200,186,.15));
  }
  .tstep:last-child::after{display:none}
  .tstep h3{font-size:17px;font-weight:600;color:var(--brand-900)}
  .tstep p{margin-top:6px;color:var(--ink-600);font-size:14.5px;line-height:1.7}

  /* ---------- 数据徽章 ---------- */
  .stats{
    margin-top:36px;padding:34px 28px;border-radius:var(--r-lg);
    background:var(--grad);color:#fff;box-shadow:var(--shadow-md,var(--shadow-sm));
  }
  .stats__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
  .stat{
    background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);
    border-radius:var(--r-sm);padding:18px 20px;
  }
  .stat b{
    display:block;font-size:26px;font-weight:800;color:var(--accent-200);
    font-variant-numeric:tabular-nums;line-height:1.2;
  }
  .stat b em{font-style:normal;font-size:13px;font-weight:600;margin-left:4px;color:#E9F6F3}
  .stat span{display:block;margin-top:6px;font-size:13.5px;color:#DCF0EC}
  .stats__note{margin-top:20px;font-size:13px;color:#CFE7E3}

  /* ---------- 交叉入口 ---------- */
  .cross{display:grid;gap:20px;margin-top:36px}
  .cross__card{
    display:flex;gap:18px;align-items:center;background:#fff;
    border:1px solid var(--line);border-radius:var(--r-md);padding:20px;
    box-shadow:var(--shadow-sm);transition:transform .22s ease,box-shadow .22s ease;
  }
  .cross__card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
  .cross__card img{width:96px;height:80px;object-fit:cover;flex:none}
  .cross__card h3{font-size:16.5px;font-weight:600;color:var(--brand-900)}
  .cross__card:hover h3{color:var(--brand-600)}
  .cross__card p{margin-top:6px;font-size:13.5px;color:var(--ink-600);line-height:1.7}
  .tag{
    display:inline-block;background:var(--accent-200);color:var(--brand-600);
    font-size:12.5px;font-weight:600;padding:4px 12px;border-radius:999px;
  }

  /* ---------- FAQ ---------- */
  .faq{margin-top:32px}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
    margin-bottom:12px;overflow:hidden;
  }
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
    gap:16px;padding:18px 22px;font-size:16px;font-weight:600;color:var(--brand-900);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{
    content:"+";flex:none;font-size:22px;line-height:1;font-weight:600;color:var(--brand-500);
  }
  .faq-item[open] summary::after{content:"−"}
  .faq-item summary:hover{color:var(--brand-600)}
  .faq-item summary:focus-visible{outline:2px solid var(--accent-500);outline-offset:-2px}
  .faq-item .faq-body{padding:0 22px 20px;color:var(--ink-600);font-size:15px;line-height:1.85}

  /* ---------- CTA ---------- */
  .cta{
    margin-top:72px;border-radius:var(--r-lg);padding:40px 30px;
    background:var(--grad);color:#fff;box-shadow:var(--shadow-sm);
    display:grid;gap:26px;
  }
  .cta h2{font-size:24px;font-weight:700;line-height:1.35}
  .cta p{margin-top:12px;font-size:15px;color:#DDF0EC;max-width:34em}
  .cta__form{display:flex;flex-wrap:wrap;gap:12px}
  .cta__form input{
    flex:1 1 240px;min-width:0;padding:13px 18px;border-radius:12px;
    border:1px solid rgba(255,255,255,.5);background:rgba(255,255,255,.14);
    color:#fff;outline:none;transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
  }
  .cta__form input::placeholder{color:#C9E5E0}
  .cta__form input:focus{
    border-color:var(--accent-500);background:rgba(255,255,255,.2);
    box-shadow:0 0 0 4px rgba(242,163,60,.24);
  }
  .cta__note{margin-top:16px;font-size:13px;color:#C6E2DD}

  /* ---------- 页脚 ---------- */
  .footer{margin-top:80px;background:var(--brand-900);color:#CFE3DF}
  .footer__bar{height:4px;background:var(--grad)}
  .footer .container{padding-top:52px;padding-bottom:28px}
  .footer__grid{display:grid;gap:34px}
  .footer__brand{display:flex;align-items:center;gap:12px}
  .footer__brand span{
    width:34px;height:34px;border-radius:11px;background:var(--grad);flex:none;
    display:flex;align-items:center;justify-content:center;
  }
  .footer__brand span i{display:block;width:14px;height:14px;border:2px solid #fff;border-radius:4px}
  .footer__brand b{color:#fff;font-size:16.5px;font-weight:700}
  .footer__grid p{margin-top:16px;font-size:13.5px;line-height:1.85;color:#9FBAB6;max-width:32em}
  .footer h4{font-size:14px;color:#fff;font-weight:600;letter-spacing:.04em}
  .footer__links{display:flex;flex-direction:column;gap:10px;margin-top:16px}
  .footer__links a{font-size:13.5px;color:#CFE3DF}
  .footer__links a:hover{color:var(--brand-300)}
  .footer__bottom{
    margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
    display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
    font-size:12.5px;color:#8FAEAA;font-variant-numeric:tabular-nums;
  }
  .footer__bottom a{color:#8FAEAA}
  .footer__bottom a:hover{color:var(--brand-300)}

  /* ---------- 响应式 ---------- */
  @media (min-width:640px){
    .stats__grid{grid-template-columns:repeat(4,1fr)}
  }
  @media (min-width:768px){
    .container,.page__inner{padding:0 32px}
    .hero{padding:64px 48px 112px}
    .hero h1{font-size:40px}
    .hero__float{right:48px;bottom:44px}
    .hero__badge{left:48px;bottom:48px}
    .section h2{font-size:30px}
    .split{grid-template-columns:1fr 1fr;gap:44px}
    .split--rev .split__media{order:2}
    .cross{grid-template-columns:1fr 1fr}
    .cta{padding:52px 48px;grid-template-columns:1.15fr .85fr;align-items:center}
    .footer__grid{grid-template-columns:1.4fr .9fr .9fr}
    .cta h2{font-size:28px}
  }
  @media (min-width:1024px){
    .topbar{display:none}
    .mask{display:none}
    .shell{transform:translateX(0)}
    .page{padding-top:0;margin-left:256px}
    .hero{margin-top:32px;padding:72px 64px 108px}
    .hero h1{font-size:46px}
    .section{margin-top:96px}
    .hero__float{right:64px}
    .hero__badge{left:64px}
  }
  @media (max-width:519px){
    .hero{padding:36px 22px 120px;border-radius:22px}
    .hero h1{font-size:28px}
    .hero__float{position:static;width:100%;margin-top:28px}
    .hero__badge{left:22px;bottom:30px}
    .btn{width:100%}
    .hero__actions{gap:10px}
    .cross__card{flex-direction:column;align-items:flex-start}
    .cross__card img{width:100%;height:140px}
    .cta__form .btn{width:100%}
  }

/* roulang page: category2 */
:root{
    --brand-900:#0A2E2C;
    --brand-600:#14655E;
    --brand-500:#1B8A7A;
    --brand-300:#7CC8BA;
    --accent-500:#F2A33C;
    --accent-200:#FFE3BC;
    --ink-900:#17201F;
    --ink-600:#4A5654;
    --ink-400:#8A9492;
    --bg:#F6F4EF;
    --card:#FFFFFF;
    --line:#E4E0D8;
    --grad:linear-gradient(135deg,#0F4A46 0%,#1B8A7A 55%,#2FB39B 100%);
    --r-lg:28px;
    --r-md:20px;
    --r-sm:16px;
    --r-xs:12px;
    --sh:0 1px 2px rgba(10,46,44,.06),0 8px 24px rgba(10,46,44,.07);
    --sh-hover:0 2px 4px rgba(10,46,44,.08),0 18px 40px rgba(10,46,44,.14);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
    background:var(--bg);
    color:var(--ink-900);
    font-size:16px;
    line-height:1.75;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button,input{font:inherit}
  a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
    outline:2px solid var(--accent-500);outline-offset:2px;border-radius:10px;
  }
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
  .container{width:100%;max-width:1120px;margin-inline:auto;padding-inline:20px}
  @media(min-width:640px){.container{padding-inline:24px}}
  @media(min-width:1024px){.container{padding-inline:40px}}

  /* ============ 左侧导航外壳 ============ */
  .topbar{
    position:sticky;top:0;z-index:70;height:56px;display:flex;align-items:center;
    justify-content:space-between;padding:0 16px;background:var(--brand-900);color:#fff;
    box-shadow:0 4px 16px rgba(10,46,44,.2);
  }
  @media(min-width:1024px){.topbar{display:none}}
  .topbar__brand{display:flex;align-items:center;gap:10px;font-size:16px;color:#fff;font-weight:600}
  .topbar__btn{
    width:40px;height:40px;border-radius:12px;background:rgba(255,255,255,.12);
    border:0;color:#fff;display:grid;place-items:center;cursor:pointer;transition:background .2s;
  }
  .topbar__btn:hover{background:rgba(255,255,255,.2)}
  .logo-mark{
    width:34px;height:34px;border-radius:11px;background-image:var(--grad);
    display:grid;place-items:center;flex:0 0 auto;
  }
  .logo-mark i{width:12px;height:12px;background:#fff;border-radius:3px;transform:rotate(45deg);display:block}
  .shell{
    position:fixed;top:0;left:0;bottom:0;width:256px;z-index:60;
    background:var(--brand-900);color:#fff;display:flex;flex-direction:column;
    padding:22px 16px;overflow-y:auto;transform:translateX(-100%);
    transition:transform .3s ease;
  }
  @media(min-width:1024px){.shell{transform:none}}
  .shell.is-open{transform:none}
  .shell__logo{display:flex;align-items:center;gap:10px;padding:6px 8px 20px;font-size:18px;font-weight:700;letter-spacing:.2px}
  .shell__nav{display:flex;flex-direction:column;gap:6px;margin-top:4px}
  .navlink{
    position:relative;display:flex;align-items:center;gap:12px;
    padding:11px 16px;border-radius:12px;font-size:15px;color:rgba(255,255,255,.78);
    transition:background .2s,color .2s;
  }
  .navlink::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:3px;height:0;border-radius:0 3px 3px 0;background:var(--accent-500);
    transition:height .22s ease;
  }
  .navlink:hover{background:rgba(255,255,255,.08);color:#fff}
  .navlink:hover::before{height:20px}
  .navlink.is-active{background:rgba(255,255,255,.11);color:#fff;font-weight:600}
  .navlink.is-active::before{height:24px}
  .shell__foot{margin-top:auto;padding-top:24px}
  .shell__divider{height:1px;background:rgba(255,255,255,.14);margin-bottom:16px}
  .shell__note{font-size:12.8px;line-height:1.7;color:rgba(255,255,255,.6);margin:0 8px 12px}
  .shell__mini{display:inline-flex;margin:0 8px;font-size:13px;color:var(--brand-300)}
  .shell__mini:hover{text-decoration:underline;text-underline-offset:4px}
  .shell-overlay{
    position:fixed;inset:0;background:rgba(10,46,44,.55);z-index:55;
    opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
  }
  .shell-overlay.is-open{opacity:1;visibility:visible}
  @media(min-width:1024px){.shell-overlay{display:none}}
  .main-shift{margin-left:0}
  @media(min-width:1024px){.main-shift{margin-left:256px}}

  /* ============ 板块与标题 ============ */
  .block{padding:56px 0}
  @media(min-width:1024px){.block{padding:88px 0}}
  .block--alt{background:#fff}
  .block--first{padding-top:26px}
  @media(min-width:1024px){.block--first{padding-top:38px}}
  .sec-head{max-width:780px;margin-bottom:32px}
  .sec-head h2{
    position:relative;margin:0 0 12px;padding-left:16px;font-size:26px;font-weight:700;
    line-height:1.32;letter-spacing:-.01em;color:var(--brand-900);
  }
  .sec-head h2::before{
    content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;
    border-radius:4px;background-image:var(--grad);
  }
  @media(min-width:1024px){.sec-head h2{font-size:30px}}
  .sec-head p{margin:0;font-size:15px;line-height:1.85;color:var(--ink-600)}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:13px 28px;border-radius:999px;border:1px solid transparent;
    font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
    transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,color .22s ease,filter .22s ease;
  }
  .btn--primary{background-image:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(20,101,94,.28)}
  .btn--primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(20,101,94,.34);filter:brightness(1.05)}
  .btn--primary:active{transform:scale(.98);background-image:linear-gradient(135deg,#0F4A46,#14655E)}
  .btn--ghost{background:transparent;color:var(--brand-500);border-color:var(--brand-500)}
  .btn--ghost:hover{background:var(--brand-500);color:#fff;transform:translateY(-2px)}
  .btn--ondark{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.55)}
  .btn--ondark:hover{background:#fff;color:var(--brand-900);transform:translateY(-2px)}
  .btn--light{background:#fff;color:var(--brand-600);box-shadow:0 10px 24px rgba(10,46,44,.22)}
  .btn--light:hover{transform:translateY(-2px);background:#F6F4EF;box-shadow:0 16px 32px rgba(10,46,44,.28)}
  .btn--light:active{transform:scale(.98)}

  /* ============ Hero ============ */
  .hero{
    position:relative;overflow:hidden;border-radius:var(--r-lg);
    min-height:min(68vh,620px);display:flex;align-items:flex-end;
    padding:32px 24px;box-shadow:0 24px 60px rgba(10,46,44,.18);
  }
  @media(min-width:640px){.hero{padding:40px 32px}}
  @media(min-width:1024px){.hero{padding:52px 48px}}
  .hero__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
  .hero__veil{
    position:absolute;inset:0;z-index:1;
    background:linear-gradient(135deg,rgba(15,74,70,.9) 0%,rgba(27,138,122,.82) 55%,rgba(47,179,155,.74) 100%);
  }
  .hero__inner{position:relative;z-index:2;width:100%;display:grid;gap:28px;align-items:end}
  @media(min-width:1024px){.hero__inner{grid-template-columns:minmax(0,1.5fr) minmax(0,.85fr);gap:44px}}
  .hero__eyebrow{
    display:inline-flex;align-items:center;gap:8px;margin:0 0 14px;
    font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--accent-200);
  }
  .hero__title{margin:0 0 14px;font-size:29px;font-weight:700;line-height:1.22;letter-spacing:-.01em;color:#fff}
  @media(min-width:640px){.hero__title{font-size:38px}}
  @media(min-width:1024px){.hero__title{font-size:46px}}
  .hero__sub{margin:0 0 26px;max-width:560px;font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.9)}
  .hero__actions{display:flex;flex-wrap:wrap;gap:12px}
  .hero__card{
    display:flex;gap:14px;align-items:center;padding:16px;border-radius:var(--r-md);
    background:rgba(255,255,255,.96);box-shadow:0 18px 40px rgba(10,46,44,.22);
  }
  .hero__card img{width:92px;height:70px;object-fit:cover;border-radius:14px;flex:0 0 auto}
  .hero__card p{margin:8px 0 0;font-size:13.5px;line-height:1.7;color:var(--ink-600)}
  .hero__badge{
    position:absolute;z-index:3;right:20px;top:20px;display:flex;align-items:baseline;gap:6px;
    padding:8px 16px;border-radius:999px;background:var(--accent-200);
    box-shadow:0 10px 24px rgba(10,46,44,.22);
  }
  @media(min-width:1024px){.hero__badge{right:48px;top:44px}}
  .hero__badge-num{font-size:20px;font-weight:700;color:#B4670B;font-variant-numeric:tabular-nums}
  .hero__badge-txt{font-size:12.5px;font-weight:600;color:var(--brand-600)}

  /* ============ 卡片 / 标签 / 数据 ============ */
  .card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
    box-shadow:var(--sh);transition:box-shadow .25s ease,transform .25s ease;
  }
  .card:hover{box-shadow:var(--sh-hover)}
  .card--pad{padding:24px}
  @media(min-width:1024px){.card--pad{padding:28px}}
  .card--pad p{margin:0 0 14px;font-size:15px;line-height:1.85;color:var(--ink-600)}
  .card--pad p:last-child{margin-bottom:0}
  .lead{font-size:16.5px !important;line-height:1.9 !important;color:var(--ink-900) !important}
  .tag{
    display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
    font-size:12.5px;font-weight:600;background:var(--accent-200);color:var(--brand-600);
  }
  .dot-list{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:10px}
  .dot-list li{position:relative;padding-left:18px;font-size:14.5px;line-height:1.75;color:var(--ink-600)}
  .dot-list li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--brand-500)}
  .dot-list b{color:var(--ink-900);font-weight:600}
  .stat{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
    padding:18px;box-shadow:var(--sh);transition:transform .22s ease,box-shadow .22s ease;
  }
  .stat:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
  .stat__num{display:block;font-size:28px;font-weight:700;line-height:1.1;color:var(--accent-500);font-variant-numeric:tabular-nums}
  .stat__label{display:block;margin-top:6px;font-size:13.5px;color:var(--ink-600)}
  .stat-note{margin:14px 0 0;font-size:13px;color:var(--ink-400)}

  /* ============ 步骤时间轴 ============ */
  .steps{list-style:none;margin:0;padding:0;display:grid;gap:18px}
  @media(min-width:768px){.steps{grid-template-columns:repeat(2,1fr)}}
  @media(min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}
  .step{
    position:relative;overflow:hidden;padding:24px;border-radius:var(--r-md);
    background:#fff;border:1px solid var(--line);box-shadow:var(--sh);
    transition:transform .24s ease,box-shadow .24s ease;
  }
  .step::after{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background-image:var(--grad)}
  .step:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
  .step__no{
    display:inline-grid;place-items:center;width:40px;height:40px;border-radius:13px;
    background:var(--accent-200);color:var(--brand-600);font-weight:700;
    font-variant-numeric:tabular-nums;
  }
  .step h3{margin:14px 0 8px;font-size:18px;font-weight:600;color:var(--brand-900)}
  .step p{margin:0;font-size:14.3px;line-height:1.78;color:var(--ink-600)}

  /* ============ 双栏对照 ============ */
  .compare{border-radius:var(--r-lg);padding:26px;border:1px solid var(--line)}
  @media(min-width:1024px){.compare{padding:32px}}
  .compare--dark{background-image:var(--grad);border-color:transparent;color:#fff;box-shadow:0 18px 44px rgba(10,46,44,.2)}
  .compare--light{background:#fff;box-shadow:var(--sh)}
  .compare h3{margin:0 0 6px;font-size:20px;font-weight:700}
  .compare__lead{margin:0 0 20px;font-size:13.5px;line-height:1.7;opacity:.85}
  .compare ul{list-style:none;margin:0;padding:0;display:grid;gap:12px}
  .compare li{position:relative;padding-left:20px;font-size:14.5px;line-height:1.75}
  .compare li::before{
    content:"";position:absolute;left:0;top:8px;width:9px;height:9px;border-radius:3px;
    background:currentColor;opacity:.55;
  }
  .compare--dark li::before{opacity:.85;background:var(--accent-200)}

  /* ============ 图文块 ============ */
  .figure-wrap{position:relative;padding:0 14px 14px 0}
  .figure-wrap::after{
    content:"";position:absolute;left:14px;top:14px;right:0;bottom:0;
    border:2px solid var(--brand-300);border-radius:24px;
  }
  .figure{position:relative;margin:0;border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh)}
  .figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
  .figure figcaption{
    position:absolute;left:0;right:0;bottom:0;padding:16px;
    font-size:12.5px;color:#fff;background:linear-gradient(to top,rgba(10,46,44,.8),rgba(10,46,44,0));
  }
  .prose p{margin:0 0 16px;font-size:15.5px;line-height:1.9;color:var(--ink-600)}
  .prose p:last-child{margin-bottom:0}
  .link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand-600);margin-top:18px}
  .link-arrow:hover{color:var(--brand-500);text-decoration:underline;text-underline-offset:4px}

  /* ============ 入口小卡 ============ */
  .entry{
    display:flex;gap:14px;padding:22px;border-radius:var(--r-md);
    background:#fff;border:1px solid var(--line);box-shadow:var(--sh);
    transition:transform .24s ease,box-shadow .24s ease;
  }
  .entry:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
  .entry__icon{
    flex:0 0 auto;width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
    background:linear-gradient(135deg,#E6F4F1,#C9E9E1);color:var(--brand-600);
  }
  .entry h3{margin:0 0 6px;font-size:16.5px;font-weight:600;color:var(--brand-900)}
  .entry p{margin:0;font-size:14px;line-height:1.75;color:var(--ink-600)}

  /* ============ 交叉入口 ============ */
  .cross{
    display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:space-between;
    padding:24px;border-radius:var(--r-md);background:#fff;border:1px solid var(--line);box-shadow:var(--sh);
  }
  .cross p{margin:0;font-size:14.6px;line-height:1.75;color:var(--ink-600);max-width:620px}
  .cross__links{display:flex;flex-wrap:wrap;gap:12px}

  /* ============ FAQ ============ */
  .faq{display:grid;gap:12px}
  .faq details{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
    padding:0 22px;transition:border-color .22s ease,box-shadow .22s ease;
  }
  .faq details[open]{border-color:var(--brand-300);box-shadow:var(--sh)}
  .faq summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
    gap:16px;padding:18px 0;font-size:16.5px;font-weight:600;color:var(--brand-900);
  }
  .faq summary::-webkit-details-marker{display:none}
  .faq summary::after{content:"+";font-size:22px;font-weight:400;line-height:1;color:var(--brand-500);transition:transform .2s ease}
  .faq details[open] summary::after{content:"−"}
  .faq p{margin:0 0 20px;max-width:840px;font-size:14.8px;line-height:1.85;color:var(--ink-600)}

  /* ============ CTA ============ */
  .cta{
    position:relative;overflow:hidden;border-radius:var(--r-lg);
    padding:38px 24px;background-image:var(--grad);color:#fff;
    box-shadow:0 22px 52px rgba(10,46,44,.2);
  }
  @media(min-width:1024px){.cta{padding:52px 48px}}
  .cta__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.16;z-index:0}
  .cta__inner{position:relative;z-index:2;display:grid;gap:26px;align-items:center}
  @media(min-width:1024px){.cta__inner{grid-template-columns:1.05fr 1fr;gap:44px}}
  .cta h2{margin:0 0 10px;font-size:23px;font-weight:700;line-height:1.35;color:#fff}
  @media(min-width:1024px){.cta h2{font-size:28px}}
  .cta p{margin:0;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.86)}
  .form{display:flex;flex-wrap:wrap;gap:10px}
  .field{
    flex:1 1 240px;min-width:0;padding:13px 16px;border-radius:var(--r-xs);
    border:1px solid var(--line);background:#fff;color:var(--ink-900);font-size:15px;
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .field::placeholder{color:var(--ink-400)}
  .field:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(27,138,122,.18)}
  .form__msg{width:100%;min-height:18px;margin:2px 0 0;font-size:13px;line-height:1.6;color:#DFF3EC}

  /* ============ 页脚 ============ */
  .footer{position:relative;background:var(--brand-900);color:rgba(255,255,255,.78);padding:56px 0 28px}
  .footer__bar{position:absolute;left:0;right:0;top:0;height:4px;background-image:var(--grad)}
  .footer__grid{display:grid;gap:32px}
  @media(min-width:768px){.footer__grid{grid-template-columns:1.4fr 1fr 1fr}}
  .footer__brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;font-size:18px;font-weight:700;color:#fff}
  .footer__brand span{width:32px;height:32px;border-radius:10px;background-image:var(--grad);display:grid;place-items:center}
  .footer__brand i{width:11px;height:11px;background:#fff;border-radius:3px;transform:rotate(45deg);display:block}
  .footer p{margin:0;font-size:14px;line-height:1.8}
  .footer h4{margin:0 0 14px;font-size:15px;font-weight:600;color:#fff}
  .footer__links{display:grid;gap:10px}
  .footer__links a{font-size:14.5px;color:rgba(255,255,255,.78);transition:color .2s ease}
  .footer__links a:hover{color:var(--brand-300)}
  .footer__bottom{
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
    font-size:13px;color:rgba(255,255,255,.6);
  }
  .footer__bottom a{color:var(--brand-300)}
  .footer__bottom a:hover{text-decoration:underline;text-underline-offset:3px}