/* roulang page: index */
/* ==================== 设计变量 ==================== */
:root{
  --brand:#0F7A4A;
  --brand-deep:#0A4F31;
  --brand-mist:#E6F3EC;
  --lime:#C8F135;
  --warn:#FF7A2F;
  --ink:#10201A;
  --text:#3E4A44;
  --muted:#6E7A74;
  --line:#E3EAE4;
  --bg-soft:#F5F8F5;
  --dark:#0B1F17;
  --white:#ffffff;
  --radius-card:16px;
  --radius-pic:20px;
  --radius-input:12px;
  --shadow-1:0 2px 8px rgba(11,31,23,.06);
  --shadow-2:0 12px 32px rgba(11,31,23,.12);
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-mono:"Roboto Mono","SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
  --sp:8px;
}

/* ==================== 基础重置 ==================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,dl,dd,dt{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;height:auto;}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
time,.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px;}
::selection{background:var(--lime);color:var(--ink);}

/* ==================== 容器与通用排版 ==================== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.sec{padding:80px 0;}
.sec-soft{background:var(--bg-soft);}
.sec-head{margin-bottom:40px;max-width:760px;}
.sec-head h2{font-size:30px;line-height:1.33;font-weight:700;color:var(--ink);letter-spacing:.2px;}
.sec-head p{margin-top:12px;font-size:16px;line-height:1.75;color:var(--muted);}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.sec-head-row .sec-head{margin-bottom:0;}
.sec-more{
  flex:none;font-size:14px;font-weight:500;color:var(--brand-deep);
  padding-bottom:2px;border-bottom:2px solid transparent;transition:border-color .2s,color .2s;
}
.sec-more:hover{border-bottom-color:var(--lime);color:var(--brand);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:500;letter-spacing:2px;color:var(--brand);
  text-transform:none;margin-bottom:16px;
}
.eyebrow::before{content:"";width:24px;height:3px;border-radius:2px;background:var(--lime);}

/* ==================== 按钮 ==================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:700;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:filter .2s,box-shadow .2s,transform .12s,background-color .2s,color .2s,border-color .2s;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}
.btn-lime{background:var(--lime);color:var(--brand-deep);}
.btn-lime:hover{filter:brightness(1.06);box-shadow:0 8px 20px rgba(200,241,53,.4);}
.btn-outline{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-outline:hover{background:var(--brand-mist);}
.btn-ghost{background:var(--brand-mist);color:var(--brand-deep);}
.btn-ghost:hover{background:#D8EDE1;}
.btn-outline-light{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.5);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.16);}
.btn-lg{height:48px;padding:0 28px;font-size:16px;}
.btn-md{height:40px;padding:0 18px;font-size:14px;}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}

/* ==================== 徽章 ==================== */
.badge{
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-mist);color:var(--brand-deep);
  font-size:12.5px;font-weight:500;line-height:1;white-space:nowrap;
}
.badge-dark{background:rgba(200,241,53,.14);color:var(--lime);}
.badge-warm{background:rgba(255,122,47,.12);color:#B8480D;}

/* ==================== 导航 ==================== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(11,31,23,.08);}
.nav{display:flex;align-items:center;gap:20px;height:64px;}
.logo{display:flex;align-items:center;gap:10px;flex:none;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex:none;
  background:linear-gradient(140deg,var(--brand),var(--brand-deep));
  display:grid;place-items:center;color:var(--lime);
}
.logo-mark svg{width:19px;height:19px;display:block;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text strong{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:.2px;}
.logo-text em{font-style:normal;font-size:11px;font-weight:500;letter-spacing:3px;color:var(--brand);}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:12px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:64px;
  padding:0 14px;font-size:14.5px;font-weight:500;color:var(--text);
  transition:color .2s;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand-deep);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-deep);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;border-radius:999px;
  background:var(--bg-soft);border:1px solid var(--line);
  transition:border-color .2s,background-color .2s;
}
.nav-search:focus-within{border-color:var(--brand);background:#fff;}
.nav-search svg{width:16px;height:16px;flex:none;color:var(--muted);}
.nav-search input{
  border:0;background:transparent;outline:none;width:170px;
  font-size:14px;color:var(--text);
}
.nav-search input::placeholder{color:var(--muted);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);}

/* 移动端抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,31,23,.42);
  opacity:0;pointer-events:none;transition:opacity .28s ease;z-index:70;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:86vw;z-index:80;
  background:#fff;box-shadow:-16px 0 40px rgba(11,31,23,.16);
  transform:translateX(102%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-head span{font-size:15px;font-weight:700;color:var(--ink);}
.drawer-head button{width:34px;height:34px;border-radius:10px;background:var(--bg-soft);color:var(--ink);font-size:20px;line-height:1;}
.drawer-search{display:flex;align-items:center;gap:8px;margin:20px 0 8px;height:44px;padding:0 14px;border-radius:var(--radius-input);background:var(--bg-soft);border:1px solid var(--line);}
.drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;}
.drawer-nav{display:flex;flex-direction:column;margin-top:12px;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;border-bottom:1px solid var(--line);
  font-size:15px;font-weight:500;color:var(--text);
}
.drawer-nav a.is-active{color:var(--brand-deep);font-weight:700;}
.drawer-nav a.is-active::after{content:"";width:8px;height:8px;border-radius:50%;background:var(--lime);}
.drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:24px;}

/* ==================== 首屏 ==================== */
.hero{position:relative;overflow:hidden;background:var(--brand-deep);color:#fff;}
.hero::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  opacity:.5;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(10,79,49,.95) 0%,rgba(10,79,49,.86) 42%,rgba(11,31,23,.62) 100%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.05fr .95fr;
  gap:48px;align-items:center;padding:72px 0 88px;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:999px;
  background:rgba(200,241,53,.16);color:var(--lime);
  font-size:12.5px;font-weight:500;letter-spacing:.5px;margin-bottom:20px;
}
.hero h1{
  font-size:44px;line-height:1.27;font-weight:700;letter-spacing:.4px;color:#fff;
}
.hero-sub{margin-top:18px;font-size:16px;line-height:1.75;color:rgba(255,255,255,.82);max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-badges .badge{background:rgba(255,255,255,.12);color:rgba(255,255,255,.9);height:28px;}
.hero-device{position:relative;justify-self:center;}
.device-frame{
  width:300px;padding:10px;border-radius:28px;
  background:rgba(11,31,23,.72);
  border:1px solid rgba(255,255,255,.14);
  box-shadow:0 26px 60px rgba(0,0,0,.34);
}
.device-frame img{width:100%;border-radius:var(--radius-pic);}
.device-chip{
  position:absolute;left:-14px;bottom:34px;
  padding:6px 14px;border-radius:999px;
  background:var(--lime);color:var(--brand-deep);
  font-size:12.5px;font-weight:700;
}
.hero-strip{
  position:relative;z-index:2;
  border-top:1px solid rgba(255,255,255,.12);
}
.hero-strip .container{
  display:flex;flex-wrap:wrap;gap:32px;padding-top:22px;padding-bottom:22px;
}
.hero-stat{display:flex;flex-direction:column;gap:2px;}
.hero-stat b{font-family:var(--font-mono);font-size:22px;font-weight:700;color:var(--lime);line-height:1.2;}
.hero-stat span{font-size:13px;color:rgba(255,255,255,.68);}

/* ==================== 价值点（1 大 2 小） ==================== */
.value-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.value-main{
  grid-column:span 7;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);transition:transform .24s ease,box-shadow .24s ease;
}
.value-main:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.value-main img{width:100%;border-radius:var(--radius-pic);margin-bottom:22px;aspect-ratio:16/10;object-fit:cover;}
.value-main h3{font-size:20px;line-height:1.4;font-weight:700;color:var(--ink);}
.value-main p{margin-top:12px;font-size:15.5px;line-height:1.75;color:var(--text);}
.value-side{grid-column:span 5;display:grid;gap:24px;}
.value-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s;
}
.value-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D3E6DA;}
.value-ico{
  width:44px;height:44px;border-radius:14px;background:var(--brand-mist);
  display:grid;place-items:center;color:var(--brand-deep);margin-bottom:16px;
}
.value-ico svg{width:22px;height:22px;}
.value-card h3{font-size:18px;font-weight:700;color:var(--ink);line-height:1.4;}
.value-card p{margin-top:10px;font-size:15px;line-height:1.75;color:var(--text);}

/* ==================== 截图轮播 ==================== */
.shots-wrap{position:relative;}
.shots{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 2px 20px;scrollbar-width:none;-ms-overflow-style:none;
}
.shots::-webkit-scrollbar{display:none;}
.shot{
  flex:0 0 300px;scroll-snap-align:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:14px;box-shadow:var(--shadow-1);
  transition:transform .24s ease,box-shadow .24s ease;
}
.shot:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.shot img{width:100%;border-radius:14px;aspect-ratio:9/16;object-fit:cover;background:var(--bg-soft);}
.shot figcaption{margin-top:12px;font-size:13.5px;line-height:1.6;color:var(--muted);text-align:center;}
.shot-nav{
  position:absolute;top:calc(50% - 32px);width:44px;height:44px;border-radius:50%;
  background:#fff;border:1px solid var(--line);color:var(--brand-deep);
  display:grid;place-items:center;font-size:20px;line-height:1;
  box-shadow:var(--shadow-1);transition:background-color .2s,transform .2s;z-index:3;
}
.shot-nav:hover{background:var(--brand-mist);}
.shot-nav.prev{left:-14px;}
.shot-nav.next{right:-14px;}
.shot-dots{display:flex;justify-content:center;gap:8px;margin-top:4px;}
.shot-dots button{width:8px;height:8px;border-radius:50%;background:#CFDCD4;transition:background-color .2s,width .2s;}
.shot-dots button.is-active{background:var(--brand);width:22px;border-radius:999px;}

/* ==================== 系统要求 ==================== */
.req-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:8px 28px;box-shadow:var(--shadow-1);}
.req-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:20px;
  padding:20px 0;border-bottom:1px solid var(--line);
}
.req-row dt{font-size:15px;font-weight:500;color:var(--muted);flex:none;}
.req-row dd{font-family:var(--font-mono);font-size:15px;font-weight:700;color:var(--ink);text-align:right;}
.req-note{margin-top:16px;font-size:13.5px;color:var(--muted);}

/* ==================== 评价墙 ==================== */
.reviews{position:relative;background:var(--dark);color:#fff;overflow:hidden;}
.reviews::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(70% 60% at 50% 30%,#000 0%,transparent 78%);
}
.reviews .container{position:relative;z-index:2;}
.reviews .sec-head h2{color:#fff;}
.reviews .sec-head p{color:rgba(255,255,255,.66);}
.reviews .eyebrow{color:var(--lime);}
.review-cols{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.review-col{display:grid;gap:20px;align-content:start;}
.review-col.offset{margin-top:36px;}
.review-card{
  border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-card);
  padding:22px;background:rgba(255,255,255,.03);
  transition:border-color .22s,background-color .22s,transform .22s;
}
.review-card:hover{border-color:rgba(200,241,53,.4);background:rgba(255,255,255,.06);transform:translateY(-4px);}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:none;
  background:linear-gradient(140deg,var(--brand),var(--brand-deep));
  display:grid;place-items:center;color:var(--lime);font-size:14px;font-weight:700;
}
.review-name{font-size:14.5px;font-weight:700;color:#fff;line-height:1.3;}
.review-meta{font-size:12.5px;color:rgba(255,255,255,.55);font-family:var(--font-mono);}
.stars{margin-left:auto;color:var(--warn);font-size:13px;letter-spacing:2px;}
.review-card p{font-size:15px;line-height:1.75;color:rgba(255,255,255,.82);}

/* ==================== 下载区 ==================== */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.dl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;gap:14px;
  transition:transform .24s ease,box-shadow .24s ease;
}
.dl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.dl-card h3{font-size:18px;font-weight:700;color:var(--ink);}
.dl-card p{font-size:14.5px;line-height:1.7;color:var(--muted);}
.dl-spec{display:flex;flex-wrap:wrap;gap:8px;}
.dl-card .btn{width:100%;margin-top:auto;}
.qr-box{
  width:160px;height:160px;border-radius:var(--radius-pic);
  border:1px dashed #BFD3C7;background:var(--bg-soft);
  display:grid;place-items:center;color:var(--muted);font-size:13px;text-align:center;
  line-height:1.5;padding:12px;margin:0 auto;
}
.dl-note{margin-top:20px;font-size:13px;color:var(--muted);font-family:var(--font-mono);}

/* ==================== 最新信息（CMS 循环区） ==================== */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D3E6DA;}
.post-link{display:flex;flex-direction:column;height:100%;padding:24px;}
.post-title{
  font-size:17px;line-height:1.5;font-weight:700;color:var(--ink);margin:14px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-sum{
  font-size:14.5px;line-height:1.72;color:var(--text);margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--muted);white-space:nowrap;
}
.post-more{color:var(--brand-deep);font-weight:700;}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;
  border:1px dashed #CFDCD4;border-radius:var(--radius-card);background:var(--bg-soft);
}
.empty-ico{
  width:56px;height:56px;border-radius:18px;margin:0 auto 16px;
  background:var(--brand-mist);display:grid;place-items:center;color:var(--brand);
}
.empty-ico svg{width:26px;height:26px;}
.empty-state p{font-size:15px;color:var(--muted);}
.empty-state .btn{margin-top:20px;}

/* ==================== FAQ ==================== */
.faq-list{display:grid;gap:14px;max-width:920px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .2s,box-shadow .2s;
}
.faq-item:hover{border-color:#D3E6DA;box-shadow:var(--shadow-1);}
.faq-item.is-open{border-color:#D3E6DA;box-shadow:var(--shadow-1);border-left:3px solid var(--lime);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:20px 22px;text-align:left;font-size:16px;font-weight:700;color:var(--ink);
}
.q-mark{
  width:26px;height:26px;border-radius:50%;flex:none;
  background:var(--brand-mist);color:var(--brand-deep);
  display:grid;place-items:center;font-size:14px;font-weight:700;
}
.faq-icon{margin-left:auto;flex:none;color:var(--muted);transition:transform .25s ease;}
.faq-item.is-open .faq-icon{transform:rotate(180deg);color:var(--brand-deep);}
.faq-a{display:none;padding:0 22px 22px 62px;background:var(--bg-soft);}
.faq-a p{font-size:15px;line-height:1.8;color:var(--text);padding-top:16px;}
.faq-item.is-open .faq-a{display:block;}

/* ==================== 收尾 CTA ==================== */
.cta-band{background:var(--brand-mist);position:relative;padding:56px 0;}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--lime) 0%,var(--brand) 60%,transparent 100%);
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:26px;line-height:1.4;font-weight:700;color:var(--ink);}
.cta-inner p{margin-top:8px;font-size:15px;color:var(--text);max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ==================== 页脚 ==================== */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .logo-mark{background:linear-gradient(140deg,var(--brand),#0E6B42);}
.footer-brand span{font-size:16px;font-weight:700;color:#fff;}
.footer-brand em{font-style:normal;font-size:11px;letter-spacing:3px;color:var(--lime);display:block;font-weight:500;}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.5px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s;}
.footer-col a:hover{color:#fff;}
.footer-col li span{font-size:14px;color:rgba(255,255,255,.62);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px 24px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ==================== 响应式断点 ==================== */
@media (max-width:1024px){
  .nav-menu{display:none;}
  .nav-toggle{display:flex;}
  .nav-search{display:none;}
  .nav-right .btn{display:none;}
  .hero-inner{grid-template-columns:1fr;gap:40px;padding:56px 0 64px;}
  .hero-device{justify-self:start;}
  .hero h1{font-size:36px;}
  .value-main{grid-column:span 12;}
  .value-side{grid-column:span 12;grid-template-columns:repeat(2,1fr);}
  .dl-grid{grid-template-columns:1fr 1fr;}
  .post-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .req-grid{grid-template-columns:1fr;padding:8px 24px;}
  .shot-nav.prev{left:-6px;}
  .shot-nav.next{right:-6px;}
}
@media (max-width:640px){
  .sec{padding:48px 0;}
  .sec-head h2{font-size:23px;}
  .sec-head-row{flex-direction:column;align-items:flex-start;gap:14px;}
  .hero h1{font-size:30px;line-height:1.33;}
  .hero-sub{font-size:15px;}
  .hero-inner{padding:40px 0 48px;}
  .device-frame{width:100%;max-width:300px;}
  .device-chip{left:0;bottom:20px;}
  .hero-strip .container{gap:24px;}
  .value-side{grid-template-columns:1fr;}
  .shot{flex:0 0 78%;}
  .dl-grid{grid-template-columns:1fr;}
  .post-grid{grid-template-columns:1fr;}
  .review-cols{grid-template-columns:1fr;}
  .review-col.offset{margin-top:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .faq-a{padding-left:22px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
/* ============ 设计变量 ============ */
:root{
  --brand:#0F7A4A;
  --brand-dark:#0A4F31;
  --brand-mist:#E6F3EC;
  --lime:#C8F135;
  --warm:#FF7A2F;
  --ink:#10201A;
  --text:#3E4A44;
  --muted:#6E7A74;
  --line:#E3EAE4;
  --bg-soft:#F5F8F5;
  --dark:#0B1F17;
  --radius-card:16px;
  --radius-img:20px;
  --radius-input:12px;
  --shadow-rest:0 2px 8px rgba(11,31,23,.06);
  --shadow-hover:0 12px 32px rgba(11,31,23,.12);
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",sans-serif;
  --font-mono:"Roboto Mono",SFMono-Regular,ui-monospace,Menlo,Consolas,monospace;
}
/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:#fff;
  font-weight:400;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35}
p{margin:0}
ul,ol{margin:0}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,border-color .2s ease}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.mono{font-family:var(--font-mono)}

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

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 2px 14px rgba(11,31,23,.08)}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  display:grid;place-items:center;color:var(--lime);
}
.logo-mark svg{width:19px;height:19px}
.logo-text{font-size:16px;font-weight:700;color:var(--ink);line-height:1.15}
.logo-text em{display:block;font-style:normal;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.12em;margin-top:2px}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-link{
  position:relative;display:block;padding:8px 12px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--text);white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{color:var(--brand-dark);background:var(--brand-mist)}
.nav-link.is-active{color:var(--brand-dark);font-weight:700}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;background:var(--lime);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search svg{position:absolute;left:12px;width:16px;height:16px;color:var(--muted);pointer-events:none}
.nav-search input{
  height:38px;width:196px;padding:0 14px 0 34px;
  border:1px solid var(--line);border-radius:var(--radius-input);
  background:var(--bg-soft);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search input::placeholder{color:var(--muted)}
.nav-search input:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(15,122,74,.12)}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);
  border-radius:var(--radius-input);background:#fff;place-items:center;color:var(--ink);
}
.nav-toggle svg{width:20px;height:20px}

/* 移动端抽屉 */
.drawer-mask{
  position:fixed;inset:0;z-index:80;background:rgba(11,31,23,.45);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:90;width:84%;max-width:330px;
  background:#fff;padding:22px 20px;overflow-y:auto;
  transform:translateX(100%);transition:transform .3s ease;
  box-shadow:-12px 0 32px rgba(11,31,23,.16);
}
.drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:36px;height:36px;border:1px solid var(--line);border-radius:12px;background:#fff;display:grid;place-items:center}
.drawer-close svg{width:18px;height:18px}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin:18px 0}
.drawer-nav a{padding:12px 14px;border-radius:12px;font-size:15px;font-weight:500;color:var(--text);background:var(--bg-soft)}
.drawer-nav a:hover{background:var(--brand-mist);color:var(--brand-dark)}
.drawer-actions{display:flex;flex-direction:column;gap:10px}
.drawer-search input{width:100%;height:42px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-input);background:var(--bg-soft)}
.drawer-search input:focus{outline:none;border-color:var(--brand);background:#fff}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;white-space:nowrap;cursor:pointer;
  transition:transform .18s ease,filter .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn svg{width:16px;height:16px}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--lime);color:#10201A}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 10px 24px rgba(200,241,53,.4)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{border-color:var(--brand);color:var(--brand);background:#fff}
.btn-outline:hover{background:var(--brand-mist)}
.btn-ghost{background:var(--brand-mist);color:var(--brand-dark)}
.btn-ghost:hover{filter:brightness(1.04)}
.btn-block{width:100%}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;pointer-events:none}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--brand-mist);color:var(--brand-dark);
  font-size:13px;font-weight:500;line-height:1.6;
}
.badge-mono{font-family:var(--font-mono);font-size:12px;letter-spacing:.02em}
.badge-warm{background:rgba(255,122,47,.12);color:#B44E13}

/* ============ 页面主体 ============ */
.page-main{padding:28px 0 0}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);padding-bottom:20px;
}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:var(--line)}
.crumbs .current{color:#9AA6A0;max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头 ============ */
.article-head{padding-bottom:22px;border-bottom:1px solid var(--line)}
.article-head .badge{margin-bottom:14px}
.article-title{
  font-size:44px;line-height:1.28;letter-spacing:-.6px;
  font-weight:700;color:var(--ink);margin-bottom:18px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;font-size:13px;color:var(--muted)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}
.article-meta b{font-weight:500;color:var(--text)}
.article-meta .mono{color:var(--brand-dark)}

/* ============ 文章布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:48px;align-items:start;padding:40px 0 0;
}
.article-body{max-width:760px;font-size:16px;line-height:1.9}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 20px}
.article-body h2{
  position:relative;font-size:27px;line-height:1.45;
  margin:44px 0 16px;padding-left:16px;color:var(--ink);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:3px;background:var(--lime);
}
.article-body h3{font-size:20px;line-height:1.5;margin:28px 0 12px;color:var(--ink)}
.article-body h4{font-size:17px;margin:22px 0 10px;color:var(--ink)}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px}
.article-body li{margin-bottom:8px}
.article-body li::marker{color:var(--brand)}
.article-body strong{color:var(--ink);font-weight:700}
.article-body a{color:var(--brand);border-bottom:2px solid rgba(200,241,53,.85)}
.article-body a:hover{color:var(--brand-dark);border-bottom-color:var(--brand)}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:4px solid var(--brand);
  background:var(--brand-mist);border-radius:0 12px 12px 0;color:var(--brand-dark);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body figure{margin:26px 0}
.article-body img{border-radius:var(--radius-img);border:1px solid var(--line)}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article-body pre{
  margin:22px 0;padding:18px 20px;background:var(--dark);color:#E6F3EC;
  border-radius:12px;overflow-x:auto;font-family:var(--font-mono);
  font-size:13.5px;line-height:1.75;
}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body code{font-family:var(--font-mono);font-size:.94em}
.article-body p code,.article-body li code,.article-body td code{
  background:var(--brand-mist);color:var(--brand-dark);padding:2px 6px;border-radius:6px;
}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:14.5px}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body th{background:var(--bg-soft);color:var(--ink);font-weight:700}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}

/* ============ 空态 ============ */
.empty-state{
  max-width:760px;padding:48px 32px;border:1px dashed var(--line);
  border-radius:var(--radius-card);background:var(--bg-soft);text-align:center;
}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:18px;
  background:var(--brand-mist);color:var(--brand);display:grid;place-items:center;
}
.empty-state .empty-icon svg{width:28px;height:28px}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:22px}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:88px;display:flex;flex-direction:column;gap:18px}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-rest);transition:box-shadow .25s ease,transform .25s ease;
}
.side-card:hover{box-shadow:var(--shadow-hover)}
.side-card--brand{background:var(--brand-mist);border-color:transparent}
.side-title{font-size:17px;margin:12px 0 10px;color:var(--ink)}
.side-card--brand .side-title{margin-top:14px}
.side-text{font-size:14px;color:var(--text);line-height:1.85;margin-bottom:16px}
.side-list{list-style:none;padding:0;margin:0}
.side-list li{
  position:relative;padding-left:18px;font-size:14px;line-height:1.8;
  color:var(--text);margin-bottom:10px;
}
.side-list li:last-child{margin-bottom:0}
.side-list li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;
  border-radius:2px;background:var(--lime);
}
.side-card .btn + .btn{margin-top:10px}
.qr-box{
  width:130px;height:130px;border-radius:14px;border:1px solid var(--line);
  background:
    linear-gradient(90deg,rgba(16,32,26,.9) 8px,transparent 8px) 0 0/26px 26px,
    linear-gradient(rgba(16,32,26,.9) 8px,transparent 8px) 0 0/26px 26px,
    #fff;
  background-blend-mode:normal;
  margin:0 auto 14px;
}

/* ============ 板块 ============ */
.sec{padding:72px 0}
.sec-head{margin-bottom:32px;max-width:720px}
.sec-head h2{font-size:30px;line-height:1.4}
.sec-head p{margin-top:10px;font-size:15px;color:var(--muted)}
.sec-related{padding:56px 0 40px;background:var(--bg-soft);border-top:1px solid var(--line)}

/* ============ 相关推荐卡 ============ */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-bottom:28px}
.related-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-rest);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(15,122,74,.25)}
.related-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-mist)}
.related-thumb img{width:100%;height:100%;object-fit:cover}
.related-card h3{font-size:17px;line-height:1.55;padding:18px 20px 6px;color:var(--ink)}
.related-card .related-time{
  display:block;padding:0 20px 20px;font-size:13px;color:var(--muted);
  font-family:var(--font-mono);
}

/* ============ FAQ ============ */
.faq-list{max-width:820px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(15,122,74,.3)}
.faq-item.is-open{box-shadow:var(--shadow-rest)}
.faq-q{
  position:relative;width:100%;display:flex;align-items:center;gap:12px;
  padding:18px 20px;background:none;border:0;text-align:left;
  font-size:16px;font-weight:700;color:var(--ink);line-height:1.6;
}
.faq-q .qmark{
  width:24px;height:24px;border-radius:50%;background:var(--brand-mist);
  color:var(--brand-dark);display:grid;place-items:center;
  font-size:13px;font-weight:700;flex-shrink:0;font-family:var(--font-mono);
}
.faq-q .arrow{margin-left:auto;flex-shrink:0;color:var(--muted);transition:transform .25s ease}
.faq-q .arrow svg{width:16px;height:16px;display:block}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--lime);
}
.faq-item.is-open .faq-q .arrow{transform:rotate(180deg)}
.faq-a{
  display:none;padding:0 22px 20px 56px;background:var(--bg-soft);
  font-size:15px;color:var(--text);line-height:1.85;
}
.faq-item.is-open .faq-a{display:block}

/* ============ CTA ============ */
.cta-band{padding:0 0 64px}
.cta-inner{
  position:relative;background:var(--brand-mist);border-radius:24px;
  padding:40px;display:flex;flex-wrap:wrap;align-items:center;gap:24px;
  justify-content:space-between;overflow:hidden;
}
.cta-inner::before{
  content:"";position:absolute;left:0;right:0;top:0;height:4px;
  background:linear-gradient(90deg,var(--lime),rgba(200,241,53,.15));
}
.cta-inner h2{font-size:26px;margin-bottom:8px}
.cta-inner p{font-size:15px;color:var(--text);max-width:52ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;overflow:hidden;background:var(--dark);
  color:rgba(255,255,255,.72);padding:60px 0 26px;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:72px 72px;
}
.footer-grid{
  position:relative;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:16px}
.footer-brand em{display:block;font-style:normal;font-size:11px;font-weight:500;color:var(--lime);letter-spacing:.12em;margin-top:2px}
.footer-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);max-width:360px}
.footer-col h4{font-size:14px;color:#fff;font-weight:700;margin-bottom:14px}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:10px;font-size:14px;color:rgba(255,255,255,.6)}
.footer-col a{color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  position:relative;margin-top:44px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 断点：平板 ============ */
@media (max-width:1024px){
  .nav-menu{display:none}
  .nav-toggle{display:grid}
  .article-layout{grid-template-columns:1fr;gap:40px}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 280px}
  .article-title{font-size:36px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:880px){
  .nav-search{display:none}
  .cta-inner{padding:32px 24px}
}
@media (max-width:768px){
  .sec{padding:56px 0}
  .sec-head h2{font-size:25px}
  .article-title{font-size:31px}
  .article-body h2{font-size:23px}
  .article-body h3{font-size:19px}
}
/* ============ 断点：手机 ============ */
@media (max-width:640px){
  .container{padding:0 20px}
  .nav-inner{height:56px;gap:12px}
  .nav-login{display:none}
  .logo-text{font-size:15px}
  .page-main{padding-top:20px}
  .article-title{font-size:27px;line-height:1.35}
  .article-body{font-size:15px;line-height:1.85}
  .article-side{flex-direction:column}
  .side-card{flex:1 1 auto}
  .related-grid{grid-template-columns:1fr}
  .faq-a{padding-left:22px}
  .cta-inner h2{font-size:22px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:420px){
  .nav-actions .btn-primary{padding:0 14px;font-size:13px}
  .article-title{font-size:24px}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --brand:#0F7A4A;
  --brand-deep:#0A4F31;
  --brand-mist:#E6F3EC;
  --lime:#C8F135;
  --warn:#FF7A2F;
  --ink:#10201A;
  --text:#3E4A44;
  --muted:#6E7A74;
  --line:#E3EAE4;
  --soft:#F5F8F5;
  --dark:#0B1F17;
  --white:#ffffff;
  --r-pill:999px;
  --r-btn:12px;
  --r-card:16px;
  --r-img:20px;
  --r-input:12px;
  --sh-1:0 2px 8px rgba(11,31,23,.06);
  --sh-2:0 12px 32px rgba(11,31,23,.12);
  --c-max:1200px;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --font-mono:"Roboto Mono","SFMono-Regular","Menlo","Consolas",monospace;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--white);
  font-weight:400;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35;}
p{margin:0;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;border-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
input{font-family:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;}

/* ============ 容器与通用 ============ */
.container{max-width:var(--c-max);margin:0 auto;padding:0 24px;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.sec{padding:80px 0;}
.sec-soft{background:var(--soft);}
.sec-dark{background:var(--dark);color:rgba(255,255,255,.78);}
.sec-dark h2,.sec-dark h3{color:#fff;}

.sec-head{margin-bottom:40px;}
.sec-head h2{font-size:30px;line-height:1.33;}
.sec-head p{margin-top:12px;color:var(--muted);font-size:16px;max-width:720px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:500;color:var(--brand-deep);
  background:var(--brand-mist);border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:16px;
}

/* ============ 徽章与标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-mist);color:var(--brand-deep);
  border-radius:var(--r-pill);
  padding:4px 12px;font-size:13px;font-weight:500;line-height:1.6;
  white-space:nowrap;
}
.badge-line{background:transparent;border:1px solid var(--line);color:var(--muted);}
.badge-mono{font-family:var(--font-mono);}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 18px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:14px;font-weight:500;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .15s ease,filter .2s ease;
  white-space:nowrap;
}
.btn svg{width:16px;height:16px;flex:0 0 16px;}
.btn-lg{height:48px;padding:0 24px;font-size:15px;font-weight:700;}
.btn-sm{height:36px;padding:0 14px;font-size:13px;}
.btn-lime{background:var(--lime);color:#0A2A15;}
.btn-lime:hover{filter:brightness(1.06);box-shadow:0 8px 20px rgba(200,241,53,.35);}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 8px 20px rgba(15,122,74,.25);}
.btn-outline{border-color:var(--brand);color:var(--brand);background:transparent;}
.btn-outline:hover{background:var(--brand-mist);}
.btn-ghost{background:var(--brand-mist);color:var(--brand-deep);}
.btn-ghost:hover{background:#d6ecdf;}
.btn:active{transform:translateY(1px);}
.btn[disabled]{opacity:.45;pointer-events:none;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
  backdrop-filter:saturate(160%) blur(6px);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--brand),var(--brand-deep));
  color:var(--lime);
  display:inline-flex;align-items:center;justify-content:center;
  flex:0 0 34px;
}
.logo-mark svg{width:18px;height:18px;}
.brand-text{
  font-size:16px;font-weight:700;color:var(--ink);
  line-height:1.15;display:flex;flex-direction:column;
}
.brand-text em{font-style:normal;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.14em;}

.nav-menu{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:36px;padding:0 12px;border-radius:var(--r-pill);
  font-size:14px;color:var(--muted);font-weight:400;
  transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--lime);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-deep);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:36px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  background:var(--soft);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.search-box:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(15,122,74,.12);}
.search-box svg{width:15px;height:15px;color:var(--muted);flex:0 0 15px;}
.search-box input{
  border:0;outline:none;background:transparent;width:132px;
  font-size:13px;color:var(--text);
}
.search-box input::placeholder{color:#9AA6A0;}

.menu-toggle{
  display:none;
  width:38px;height:38px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  align-items:center;justify-content:center;
}
.menu-toggle svg{width:18px;height:18px;}

/* 移动端抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,31,23,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;
  background:#fff;z-index:80;
  transform:translateX(102%);
  transition:transform .3s cubic-bezier(.32,.72,0,1);
  padding:20px;
  display:flex;flex-direction:column;gap:18px;
  box-shadow:-12px 0 40px rgba(11,31,23,.16);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:34px;height:34px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink);display:inline-flex;align-items:center;justify-content:center;
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  padding:12px 14px;border-radius:12px;font-size:15px;color:var(--text);
  transition:background .2s ease,color .2s ease;
}
.drawer-nav a:hover{background:var(--soft);color:var(--brand-deep);}
.drawer-nav a.is-active{background:var(--brand-mist);color:var(--brand-deep);font-weight:700;}
.drawer .search-box{width:100%;}
.drawer .search-box input{width:100%;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;}
.drawer-actions .btn{width:100%;}

/* ============ 面包屑 ============ */
.breadcrumb{
  font-size:13px;color:var(--muted);
  padding:22px 0 0;
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
}
.breadcrumb a{color:var(--brand);border-bottom:1px solid transparent;transition:border-color .2s ease;}
.breadcrumb a:hover{border-bottom-color:var(--lime);}
.breadcrumb .sep{color:#B9C3BD;}
.breadcrumb .current{color:var(--muted);}

/* ============ 页面头部 ============ */
.page-hero{
  position:relative;
  padding:48px 0 56px;
  background:
    linear-gradient(105deg,rgba(255,255,255,.97) 0%,rgba(230,243,236,.92) 62%,rgba(255,255,255,.86) 100%),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.page-hero h1{
  font-size:44px;line-height:1.27;
  margin:18px 0 0;max-width:820px;
}
.page-hero .lead{
  margin-top:18px;font-size:17px;color:var(--text);max-width:760px;
}
.hero-meta{
  margin-top:26px;display:flex;flex-wrap:wrap;gap:10px;align-items:center;
}

/* ============ 文档布局：目录 + 分块 ============ */
.doc-sec{padding:64px 0 80px;}
.doc-layout{display:grid;grid-template-columns:236px minmax(0,1fr);gap:48px;align-items:start;}

.toc{
  position:sticky;top:88px;
  border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;background:#fff;box-shadow:var(--sh-1);
}
.toc h2{
  font-size:13px;letter-spacing:.12em;color:var(--muted);font-weight:500;
  text-transform:uppercase;margin-bottom:14px;
}
.toc ol{display:flex;flex-direction:column;gap:2px;counter-reset:toc;}
.toc li{counter-increment:toc;}
.toc a{
  display:flex;gap:10px;align-items:baseline;
  padding:9px 10px;border-radius:10px;
  font-size:14px;color:var(--text);
  transition:background .2s ease,color .2s ease;
}
.toc a::before{
  content:counter(toc,decimal-leading-zero);
  font-family:var(--font-mono);font-size:12px;color:var(--brand);
  flex:0 0 auto;
}
.toc a:hover{background:var(--soft);color:var(--brand-deep);}
.toc-foot{
  margin-top:16px;padding-top:16px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--muted);
}

.block{
  padding-bottom:44px;margin-bottom:44px;
  border-bottom:1px solid var(--line);
}
.block:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0;}
.block h2{
  position:relative;
  font-size:30px;line-height:1.35;
  padding-left:16px;
}
.block h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  background:var(--lime);border-radius:4px;
}
.block > p{margin-top:18px;max-width:760px;}
.block h3{
  font-size:20px;line-height:1.4;margin-top:32px;
}
.block h3 + p{margin-top:12px;}

.point-card{
  margin-top:24px;
  background:var(--brand-mist);
  border-radius:var(--r-card);
  padding:22px 24px;
}
.point-card h4{
  font-size:15px;color:var(--brand-deep);margin-bottom:12px;
  display:flex;align-items:center;gap:8px;
}
.point-card h4 span.dot{
  width:8px;height:8px;border-radius:50%;background:var(--brand);flex:0 0 8px;
}
.point-list{display:flex;flex-direction:column;gap:10px;}
.point-list li{
  position:relative;padding-left:20px;font-size:15px;color:#2F3B35;
}
.point-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:9px;height:2px;background:var(--brand);border-radius:2px;
}

.spec-grid{
  margin-top:24px;
  display:grid;grid-template-columns:1fr 1fr;gap:0;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
}
.spec-row{
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:14px 20px;border-bottom:1px solid var(--line);font-size:14px;
  background:#fff;
}
.spec-row:nth-child(odd){background:#FBFDFB;}
.spec-row dt{color:var(--muted);}
.spec-row dd{margin:0;font-family:var(--font-mono);color:var(--ink);font-weight:500;}

.note-quote{
  margin-top:24px;
  background:var(--soft);
  border-left:3px solid var(--lime);
  border-radius:0 var(--r-btn) var(--r-btn) 0;
  padding:18px 22px;
  font-size:15px;color:#2F3B35;
}

.step-inline{
  margin-top:24px;display:flex;flex-direction:column;gap:0;
  counter-reset:step;
}
.step-inline li{
  counter-increment:step;
  position:relative;
  padding:16px 0 16px 54px;
  border-top:1px solid var(--line);
  font-size:15px;
}
.step-inline li:first-child{border-top:0;}
.step-inline li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:16px;
  width:36px;height:36px;border-radius:50%;
  background:var(--brand-mist);color:var(--brand-deep);
  font-family:var(--font-mono);font-size:13px;
  display:flex;align-items:center;justify-content:center;
}

/* ============ 交叉链接卡 ============ */
.cross-sec{padding:0 0 80px;}
.cross-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.cross-card{
  display:flex;gap:18px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.cross-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#CFE4D8;}
.cross-card img{
  width:112px;height:84px;object-fit:cover;border-radius:14px;flex:0 0 112px;
}
.cross-card h3{font-size:18px;line-height:1.4;}
.cross-card p{margin-top:8px;font-size:14px;color:var(--muted);}
.cross-card .go{
  margin-top:12px;display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--brand);font-weight:500;
}
.cross-card:hover .go{border-bottom:2px solid var(--lime);}

/* ============ FAQ 手风琴（深色底） ============ */
.faq-sec{position:relative;overflow:hidden;}
.faq-sec::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.7;pointer-events:none;
}
.faq-sec > .container{position:relative;z-index:1;}
.faq-sec .sec-head p{color:rgba(255,255,255,.62);}
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:860px;}
.faq-item{
  position:relative;
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--r-card);
  background:rgba(255,255,255,.04);
  overflow:hidden;
  transition:border-color .25s ease,background .25s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  background:var(--lime);border-radius:0 3px 3px 0;
  transform:scaleY(0);transform-origin:top;
  transition:transform .28s ease;
}
.faq-item.is-open::before{transform:scaleY(1);}
.faq-item.is-open{border-color:rgba(200,241,53,.45);background:rgba(255,255,255,.06);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:18px 22px;background:transparent;border:0;text-align:left;
  color:#fff;font-size:16px;font-weight:500;
}
.q-mark{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  background:rgba(200,241,53,.16);color:var(--lime);
  font-family:var(--font-mono);font-size:13px;
  display:inline-flex;align-items:center;justify-content:center;
}
.q-text{flex:1 1 auto;line-height:1.6;}
.chev{
  flex:0 0 18px;width:18px;height:18px;color:rgba(255,255,255,.6);
  transition:transform .28s ease;
}
.faq-item.is-open .chev{transform:rotate(180deg);color:var(--lime);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .32s ease;
}
.faq-a p{
  padding:0 22px 20px 62px;
  font-size:15px;color:rgba(255,255,255,.72);
}

/* ============ 收尾 CTA ============ */
.cta-sec{padding:64px 0;background:var(--brand-mist);}
.cta-inner{
  background:#fff;border-radius:24px;padding:40px 44px;
  box-shadow:var(--sh-1);
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-inner::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--lime),rgba(200,241,53,0));
}
.cta-inner h2{font-size:26px;line-height:1.35;}
.cta-inner p{margin-top:10px;font-size:15px;color:var(--muted);max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 28px;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  color:#fff;font-size:16px;font-weight:700;margin-bottom:16px;
}
.footer-brand em{font-style:normal;font-size:11px;font-weight:500;color:rgba(255,255,255,.55);letter-spacing:.14em;margin-left:6px;}
.footer-brand .logo-mark{background:rgba(255,255,255,.08);color:var(--lime);}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:420px;}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:500;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s ease;}
.footer-col a:hover{color:#fff;border-bottom:2px solid var(--lime);}
.footer-bottom{
  padding-top:22px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 响应式：平板 ============ */
@media (max-width:1024px){
  .nav-menu,.header-actions .search-box{display:none;}
  .menu-toggle{display:inline-flex;}
  .doc-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .toc{position:static;}
  .page-hero h1{font-size:36px;}
  .spec-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .cross-grid{grid-template-columns:1fr;}
}

/* ============ 响应式：手机 ============ */
@media (max-width:640px){
  .container{padding:0 20px;}
  .sec{padding:48px 0;}
  .header-inner{height:56px;gap:12px;}
  .brand-text{font-size:15px;}
  .header-actions .btn{display:none;}
  .page-hero{padding:32px 0 40px;}
  .page-hero h1{font-size:30px;line-height:1.33;margin-top:14px;}
  .page-hero .lead{font-size:15px;}
  .block h2{font-size:23px;padding-left:14px;}
  .block > p{font-size:15px;}
  .sec-head h2{font-size:23px;}
  .doc-sec{padding:40px 0 56px;}
  .point-card{padding:18px;}
  .cross-card{flex-direction:column;align-items:flex-start;}
  .cross-card img{width:100%;height:150px;flex:0 0 auto;}
  .faq-q{font-size:15px;padding:16px;}
  .faq-a p{padding:0 16px 18px 52px;font-size:14px;}
  .cta-inner{padding:28px 22px;border-radius:20px;}
  .cta-inner h2{font-size:21px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-about{max-width:none;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .step-inline li{padding-left:48px;}
  .step-inline li::before{width:32px;height:32px;font-size:12px;}
}

/* roulang page: category2 */
/* ============ 1. 设计变量 ============ */
:root{
  --brand:#0F7A4A;
  --brand-dark:#0A4F31;
  --brand-mist:#E6F3EC;
  --lime:#C8F135;
  --warm:#FF7A2F;
  --ink:#10201A;
  --text:#3E4A44;
  --muted:#6E7A74;
  --line:#E3EAE4;
  --bg-soft:#F5F8F5;
  --dark:#0B1F17;
  --white:#FFFFFF;

  --radius-pill:999px;
  --radius-btn:12px;
  --radius-card:16px;
  --radius-img:20px;
  --radius-input:12px;

  --shadow-1:0 2px 8px rgba(11,31,23,.06);
  --shadow-2:0 12px 32px rgba(11,31,23,.12);

  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-5:48px;
  --space-6:80px;

  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --font-mono:"Roboto Mono","SFMono-Regular",Menlo,Consolas,monospace;
}

/* ============ 2. 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  color:var(--text);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;height:auto;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
svg{display:block;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}

/* ============ 3. 容器与通用 ============ */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.sec{padding:var(--space-6) 0;}
.sec--soft{background:var(--bg-soft);}
.sec-head{max-width:760px;margin-bottom:var(--space-5);}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:500;letter-spacing:.06em;
  color:var(--brand);text-transform:uppercase;
  font-family:var(--font-mono);
  margin-bottom:12px;
}
.sec-eyebrow::before{
  content:"";width:24px;height:2px;background:var(--lime);border-radius:2px;
}
.sec-title{font-size:30px;line-height:1.35;}
.sec-desc{margin-top:16px;font-size:16px;color:var(--muted);}
.mono{font-family:var(--font-mono);font-weight:500;}

/* ============ 4. 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;height:64px;
}
.logo{
  display:flex;align-items:center;gap:10px;flex-shrink:0;
}
.logo-mark{
  width:34px;height:34px;flex-shrink:0;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
  color:var(--lime);
  display:flex;align-items:center;justify-content:center;
}
.logo-mark svg{width:18px;height:18px;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text b{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.01em;}
.logo-text em{
  font-style:normal;font-size:11px;font-weight:500;
  color:var(--brand);letter-spacing:.18em;
}
.nav-menu{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:15px;
  font-weight:500;
  color:var(--text);
  border-radius:8px;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--brand-dark);background:var(--brand-mist);}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;
  height:2px;border-radius:2px;background:var(--lime);
  transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-dark);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--radius-input);
  background:var(--bg-soft);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search:focus-within{
  border-color:var(--brand);
  background:var(--white);
  box-shadow:0 0 0 3px rgba(15,122,74,.10);
}
.nav-search svg{width:16px;height:16px;color:var(--muted);flex-shrink:0;}
.nav-search input{
  width:132px;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink);
}
.nav-search input::placeholder{color:var(--muted);}
.nav-toggle{
  display:none;
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);
  align-items:center;justify-content:center;
  color:var(--ink);
}
.nav-toggle svg{width:20px;height:20px;}

/* 按钮体系 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  font-size:15px;font-weight:700;
  border-radius:var(--radius-pill);
  transition:filter .2s ease,transform .12s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn svg{width:16px;height:16px;flex-shrink:0;}
.btn--primary{background:var(--lime);color:var(--brand-dark);}
.btn--primary:hover{filter:brightness(1.06);box-shadow:0 8px 20px rgba(200,241,53,.35);}
.btn--primary:active{transform:translateY(1px);}
.btn--outline{
  border:1.5px solid var(--brand);color:var(--brand);background:transparent;
  border-radius:var(--radius-btn);
}
.btn--outline:hover{background:var(--brand-mist);}
.btn--outline:active{transform:translateY(1px);}
.btn--ghost{background:var(--brand-mist);color:var(--brand-dark);border-radius:var(--radius-btn);}
.btn--ghost:hover{background:#D8EBE0;}
.btn--ghost:active{transform:translateY(1px);}
.btn--sm{height:36px;padding:0 16px;font-size:14px;}
.btn--md{height:40px;padding:0 18px;font-size:14px;}
.btn[disabled]{opacity:.45;pointer-events:none;}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;
  border-radius:var(--radius-pill);
  background:var(--brand-mist);
  color:var(--brand-dark);
  font-size:13px;font-weight:500;
  font-family:var(--font-mono);
  white-space:nowrap;
}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,31,23,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
  z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;
  background:var(--white);z-index:80;
  transform:translateX(100%);
  transition:transform .28s cubic-bezier(.4,0,.2,1);
  padding:20px;
  display:flex;flex-direction:column;gap:20px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  padding:12px 14px;border-radius:10px;font-size:15px;font-weight:500;
  color:var(--text);
}
.drawer-nav a:hover{background:var(--bg-soft);}
.drawer-nav a.is-active{background:var(--brand-mist);color:var(--brand-dark);font-weight:700;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:auto;}
.drawer-actions .btn{width:100%;}

/* ============ 5. 首屏大标题区 ============ */
.page-hero{
  position:relative;
  padding:56px 0 72px;
  background-color:var(--brand-dark);
  background-image:
    linear-gradient(115deg,rgba(10,79,49,.95) 0%,rgba(10,79,49,.78) 48%,rgba(11,31,23,.90) 100%),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  color:#fff;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.page-hero .container{position:relative;z-index:2;}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.72);
  margin-bottom:28px;
}
.crumb a{color:rgba(255,255,255,.86);transition:color .2s ease;}
.crumb a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--lime);text-decoration-thickness:2px;text-underline-offset:4px;}
.crumb .sep{color:rgba(255,255,255,.45);}
.crumb .current{color:rgba(255,255,255,.62);}
.hero-cat{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:var(--radius-pill);
  background:rgba(200,241,53,.16);
  border:1px solid rgba(200,241,53,.42);
  color:var(--lime);
  font-size:13px;font-weight:500;font-family:var(--font-mono);
  margin-bottom:20px;
}
.page-hero h1{
  color:#fff;
  font-size:44px;line-height:1.25;
  max-width:820px;
  letter-spacing:-.01em;
}
.page-hero h1 span{color:var(--lime);}
.hero-lead{
  margin-top:20px;
  max-width:640px;
  font-size:17px;
  color:rgba(255,255,255,.84);
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:12px;
  margin-top:32px;
}
.hero-meta .badge{
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.16);
  color:rgba(255,255,255,.90);
}

/* ============ 6. 步骤时间线 ============ */
.timeline{
  position:relative;
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:20px;
  margin-top:8px;
}
.timeline::before{
  content:"";position:absolute;left:26px;right:26px;top:22px;height:2px;
  background:linear-gradient(90deg,var(--lime),rgba(200,241,53,.25));
  z-index:0;
}
.tl-item{position:relative;z-index:1;}
.tl-num{
  width:44px;height:44px;border-radius:50%;
  background:var(--white);
  border:2px solid var(--brand);
  color:var(--brand-dark);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-weight:700;font-size:15px;
  box-shadow:0 0 0 6px var(--bg-soft);
  margin-bottom:18px;
}
.tl-item:first-child .tl-num{background:var(--lime);border-color:var(--lime);color:var(--brand-dark);}
.tl-item h3{font-size:17px;margin-bottom:8px;}
.tl-item p{font-size:14px;color:var(--muted);line-height:1.7;}

/* ============ 7. 分步图文块 ============ */
.step-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  padding:40px 0;
  border-bottom:1px dashed var(--line);
}
.step-row:last-child{border-bottom:0;padding-bottom:0;}
.step-row:first-child{padding-top:0;}
.step-row.is-reverse .step-media{order:2;}
.step-media{
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  background:var(--bg-soft);
}
.step-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .5s ease;
}
.step-row:hover .step-media img{transform:scale(1.03);}
.step-index{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:13px;font-weight:700;
  color:var(--brand);
  margin-bottom:14px;
}
.step-index i{
  font-style:normal;width:26px;height:26px;border-radius:8px;
  background:var(--brand-mist);color:var(--brand-dark);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;
}
.step-body h2{font-size:23px;margin-bottom:14px;}
.step-body p{color:var(--text);}
.step-list{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
.step-list li{
  position:relative;padding-left:22px;
  font-size:15px;color:var(--text);
}
.step-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:8px;height:8px;border-radius:2px;
  background:var(--lime);
}

/* ============ 8. 提示卡（错位排布） ============ */
.tips-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
  align-items:start;
}
.tip-card{
  grid-column:span 4;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.tip-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#CFE2D6;}
.tip-card:nth-child(2){margin-top:36px;}
.tip-card:nth-child(3){margin-top:72px;}
.tip-icon{
  width:44px;height:44px;border-radius:12px;
  background:var(--brand-mist);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:18px;
}
.tip-icon svg{width:22px;height:22px;}
.tip-card h3{font-size:18px;margin-bottom:10px;}
.tip-card p{font-size:15px;color:var(--muted);}
.tip-card .tip-tag{
  display:inline-block;margin-top:16px;
  font-family:var(--font-mono);font-size:12px;font-weight:500;
  color:var(--brand);background:var(--brand-mist);
  padding:4px 10px;border-radius:var(--radius-pill);
}

/* ============ 9. 下载信息条 ============ */
.dl-bar{
  background:var(--dark);
  color:#fff;
  border-radius:var(--radius-card);
  padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
  position:relative;
  overflow:hidden;
}
.dl-bar::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--lime),transparent);
}
.dl-bar h2{color:#fff;font-size:22px;margin-bottom:8px;}
.dl-bar p{color:rgba(255,255,255,.72);font-size:15px;}
.dl-facts{display:flex;gap:32px;flex-wrap:wrap;margin-top:18px;}
.dl-fact span{display:block;font-size:12px;color:rgba(255,255,255,.55);letter-spacing:.04em;}
.dl-fact b{font-family:var(--font-mono);font-size:16px;color:var(--lime);font-weight:700;}
.dl-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 10. 双按钮入口 ============ */
.dual-entry{
  display:grid;grid-template-columns:1fr 1fr;gap:24px;
}
.entry-card{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  background:var(--bg-soft);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:32px;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease;
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);background:var(--white);}
.entry-card h3{font-size:19px;margin-bottom:8px;}
.entry-card p{font-size:14px;color:var(--muted);}
.entry-arrow{
  width:44px;height:44px;border-radius:50%;flex-shrink:0;
  background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
}
.entry-arrow svg{width:18px;height:18px;}

/* ============ 11. 页脚 ============ */
.site-footer{
  background:var(--dark);
  color:rgba(255,255,255,.72);
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:48px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  color:#fff;font-size:16px;font-weight:700;
  margin-bottom:16px;
}
.footer-brand .logo-mark{width:32px;height:32px;border-radius:9px;}
.footer-brand em{font-style:normal;font-size:11px;letter-spacing:.18em;color:var(--lime);margin-left:4px;}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:360px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s ease;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--lime);text-decoration-thickness:2px;text-underline-offset:4px;}
.footer-bottom{
  margin-top:48px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ 12. 状态与工具类 ============ */
.skeleton{
  background:linear-gradient(90deg,#EDF4EF 25%,#F7FBF8 37%,#EDF4EF 63%);
  background-size:400% 100%;
  animation:sk 1.4s ease infinite;
  border-radius:12px;
}
@keyframes sk{0%{background-position:100% 50%}100%{background-position:0 50%}}
.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;
}

/* ============ 13. 响应式断点 ============ */
@media (max-width:1024px){
  .nav-menu{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:flex;}
  .nav-right .btn--outline{display:none;}
  .page-hero h1{font-size:36px;}
  .timeline{grid-template-columns:repeat(2,1fr);row-gap:32px;}
  .timeline::before{display:none;}
  .step-row{gap:32px;}
  .tip-card{grid-column:span 6;}
  .tip-card:nth-child(3){grid-column:span 12;margin-top:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
}
@media (max-width:768px){
  .sec{padding:48px 0;}
  .container{padding:0 20px;}
  .page-hero{padding:40px 0 48px;}
  .page-hero h1{font-size:30px;}
  .hero-lead{font-size:15px;}
  .sec-title{font-size:23px;}
  .step-row{grid-template-columns:1fr;gap:24px;padding:32px 0;}
  .step-row.is-reverse .step-media{order:0;}
  .step-body h2{font-size:20px;}
  .tips-grid{grid-template-columns:1fr;gap:20px;}
  .tip-card{grid-column:span 1;margin-top:0 !important;}
  .dl-bar{padding:28px 24px;}
  .dual-entry{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:520px){
  .timeline{grid-template-columns:1fr;gap:24px;}
  .tl-num{width:38px;height:38px;font-size:14px;margin-bottom:12px;}
  .page-hero h1{font-size:26px;}
  .hero-meta{gap:8px;}
  .hero-meta .badge{font-size:12px;padding:0 10px;}
  .dl-facts{gap:20px;}
  .dl-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .logo-text b{font-size:15px;}
}