/* roulang page: index */
:root{
  --c-primary:#FF5A2B;
  --c-primary-deep:#E23E12;
  --c-secondary:#12BFA0;
  --c-accent:#FFC53D;
  --c-ink:#14161B;
  --c-ink-2:#3A4150;
  --c-muted:#6B7280;
  --c-line:rgba(20,22,27,.08);
  --c-bg:#F7F5F2;
  --c-surface:#FFFFFF;
  --c-surface-2:#FFF3EC;
  --grad-brand:linear-gradient(118deg,#FF7A3D 0%,#FF4A6B 48%,#A93BFF 100%);
  --grad-deep:linear-gradient(160deg,#1B1D24 0%,#2A1E2B 100%);
  --grad-cool:linear-gradient(120deg,#12BFA0,#0E9BE0);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 6px 18px rgba(20,22,27,.06);
  --sh-2:0 14px 36px rgba(20,22,27,.10);
  --sh-brand:0 12px 28px rgba(255,90,43,.28);
  --container:1200px;
  --sec-pad:88px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .22s ease}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;color:var(--c-ink)}
p{margin:0}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit}
input{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--sec-pad) 0}
.section-tight{padding:64px 0}
.section-alt{background:var(--c-surface)}
.main{display:block}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
}
.btn-primary{background:var(--grad-brand);background-size:180% 180%;color:#fff;box-shadow:var(--sh-brand)}
.btn-primary:hover{transform:translateY(-2px);background-position:100% 50%;box-shadow:0 18px 36px rgba(255,90,43,.36)}
.btn-primary:active{transform:translateY(0);background:var(--c-primary-deep);box-shadow:0 8px 18px rgba(226,62,18,.32)}
.btn-outline{background:#fff;border:1.5px solid var(--c-primary);color:var(--c-primary-deep)}
.btn-outline:hover{background:var(--c-surface-2);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--c-ink);box-shadow:0 12px 26px rgba(0,0,0,.26)}
.btn-light:hover{transform:translateY(-2px);color:var(--c-primary)}
.btn-line{background:transparent;border:1.5px solid rgba(255,255,255,.5);color:#fff}
.btn-line:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;gap:6px;height:48px;padding:0 4px;
  font-size:15px;font-weight:600;color:var(--c-ink-2);
}
.btn-ghost::after{content:"→";transition:transform .25s ease}
.btn-ghost:hover{color:var(--c-primary)}
.btn-ghost:hover::after{transform:translateX(5px)}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;left:0;right:0;z-index:120;
  background:rgba(247,245,242,.9);
  backdrop-filter:blur(12px) saturate(160%);
  -webkit-backdrop-filter:blur(12px) saturate(160%);
  border-bottom:1px solid transparent;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(255,255,255,.96);box-shadow:var(--sh-1);border-bottom-color:var(--c-line)}
.nav-wrap{position:relative;display:flex;align-items:center;justify-content:space-between;gap:18px;height:76px;transition:height .25s ease}
.site-header.is-scrolled .nav-wrap{height:64px}
.nav-side{display:flex;align-items:center;gap:26px;flex:1 1 0;min-width:0}
.nav-side.nav-right{justify-content:flex-end}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--c-ink-2);padding:8px 2px;white-space:nowrap}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;border-radius:2px;
  background:var(--grad-brand);transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-link:hover,.nav-link:focus-visible{color:var(--c-primary)}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-primary)}
.nav-link.is-active::after{transform:scaleX(1)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;padding:4px 6px;border-radius:12px}
.brand-mark{
  position:relative;width:34px;height:34px;border-radius:11px;background:var(--grad-brand);
  box-shadow:0 8px 18px rgba(255,90,43,.3);flex:0 0 auto;
}
.brand-mark::before{
  content:"";position:absolute;left:10px;top:9px;width:15px;height:16px;background:#fff;
  clip-path:polygon(0 0,100% 50%,0 100%);opacity:.96;
}
.brand-text{font-size:18px;font-weight:800;letter-spacing:-.02em;color:var(--c-ink);white-space:nowrap}
.nav-toggle{
  display:none;position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);
  background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:background .2s}
.nav-toggle:hover span{background:var(--c-primary)}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:200;background:rgba(20,22,27,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer.is-open{opacity:1;visibility:visible}
.drawer-inner{
  position:absolute;inset:0;background:#fff;padding:18px 20px 28px;
  display:flex;flex-direction:column;transform:translateY(-16px);
  transition:transform .3s ease;overflow-y:auto;
}
.drawer.is-open .drawer-inner{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--c-line)}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);background:#fff;font-size:22px;line-height:1;color:var(--c-ink-2)}
.drawer-nav{display:flex;flex-direction:column;margin:16px 0 0}
.drawer-nav a{
  display:flex;align-items:center;min-height:48px;font-size:16px;font-weight:500;
  color:var(--c-ink-2);border-bottom:1px solid var(--c-line);
}
.drawer-nav a:hover,.drawer-nav a:focus-visible{color:var(--c-primary)}
.drawer-cta{margin-top:auto;width:100%}

/* ============ Hero ============ */
.hero{position:relative;padding:72px 0 88px;overflow:hidden}
.hero-bg{
  position:absolute;top:-150px;right:-200px;width:760px;height:620px;border-radius:90px;
  background:var(--grad-brand);opacity:.15;transform:rotate(-14deg);pointer-events:none;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(118deg,rgba(255,255,255,.6) 0 2px,transparent 2px 16px);
  opacity:.55;
}
.hero::before{
  content:"";position:absolute;left:-160px;bottom:-170px;width:440px;height:440px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,191,160,.18),transparent 68%);pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.04fr .96fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-line);font-size:13px;font-weight:600;
  color:var(--c-ink-2);margin-bottom:22px;
}
.eyebrow::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--c-secondary);
  box-shadow:0 0 0 4px rgba(18,191,160,.16);
}
.hero-title{
  font-size:clamp(30px,5vw,46px);line-height:1.2;letter-spacing:-.02em;font-weight:700;
  margin-bottom:18px;
}
.hero-sub{font-size:17px;line-height:1.75;color:var(--c-ink-2);max-width:540px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-bottom:32px}
.badge-row{display:flex;flex-wrap:wrap;gap:12px}
.chip{
  display:inline-flex;align-items:center;gap:9px;padding:8px 15px;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--r-pill);font-size:13px;
  color:var(--c-muted);box-shadow:var(--sh-1);
}
.chip-ico{
  width:24px;height:24px;border-radius:8px;background:var(--grad-cool);color:#fff;
  font-size:12px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.chip strong{color:var(--c-ink);font-size:14px;font-weight:700;font-variant-numeric:tabular-nums}
.hero-visual{position:relative;padding:14px 0 34px}
.hero-shot{
  border-radius:var(--r-xl);overflow:hidden;border:1px solid var(--c-line);
  box-shadow:var(--sh-2);background:var(--c-surface-2);aspect-ratio:16/11;
}
.hero-shot img{width:100%;height:100%;object-fit:cover}
.hero-float{
  position:absolute;right:-6px;bottom:0;width:196px;border-radius:var(--r-lg);
  overflow:hidden;border:5px solid #fff;box-shadow:var(--sh-2);background:#fff;
}
.hero-float img{width:100%;aspect-ratio:4/5;object-fit:cover}

/* ============ 数据带 ============ */
.stat-band{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);padding:38px 0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat-num{
  font-size:clamp(26px,3.4vw,36px);font-weight:800;line-height:1.2;
  font-variant-numeric:tabular-nums;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-label{font-size:13px;color:var(--c-muted);margin-top:6px}

/* ============ 板块标题 ============ */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:32px}
.section-head h2{font-size:clamp(24px,3.4vw,32px);line-height:1.3}
.section-head .lead{color:var(--c-muted);font-size:15px;margin-top:10px;max-width:640px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary)}
.link-more::after{content:"→";transition:transform .25s ease}
.link-more:hover::after{transform:translateX(5px)}

/* ============ 截图轮播 ============ */
.shots-viewport{
  display:grid;grid-auto-flow:column;gap:24px;
  grid-auto-columns:calc((100% - 48px)/3);
  overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 0 20px;scrollbar-width:none;-ms-overflow-style:none;
}
.shots-viewport::-webkit-scrollbar{display:none}
.shot-card{
  scroll-snap-align:start;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:16px;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease;margin:0;
}
.shot-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.shot-frame{border-radius:var(--r-md);overflow:hidden;background:var(--c-surface-2);aspect-ratio:3/4}
.shot-frame img{width:100%;height:100%;object-fit:cover}
.shot-card figcaption{margin-top:14px;font-size:14px;color:var(--c-muted);line-height:1.7}
.shot-card figcaption strong{display:block;font-size:16px;color:var(--c-ink);margin-bottom:4px;font-weight:700}
.shots-nav{display:flex;align-items:center;justify-content:center;gap:18px;margin-top:10px}
.circle-btn{
  width:44px;height:44px;border-radius:50%;border:1.5px solid var(--c-line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;
  color:var(--c-ink-2);line-height:1;transition:all .22s ease;
}
.circle-btn:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px)}
.dots{display:flex;align-items:center;gap:8px}
.dot{width:9px;height:9px;border-radius:50%;background:rgba(20,22,27,.16);transition:all .25s ease;padding:0}
.dot.is-active{width:26px;border-radius:var(--r-pill);background:var(--grad-brand)}

/* ============ 核心功能 ============ */
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.feature-card{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease;
}
.feature-card::after{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad-brand);
  opacity:0;transition:opacity .25s ease;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.feature-card:hover::after{opacity:1}
.feature-lg{grid-column:span 6;display:flex;flex-direction:column;padding:24px}
.feature-sm{grid-column:span 3;display:flex;flex-direction:column}
.feature-media{border-radius:var(--r-md);overflow:hidden;background:var(--c-surface-2);aspect-ratio:16/9;margin-bottom:22px}
.feature-media img{width:100%;height:100%;object-fit:cover}
.feature-body h3{font-size:20px;line-height:1.4;margin-bottom:12px}
.feature-sm h3{font-size:18px;line-height:1.45;margin-bottom:10px}
.feature-body p,.feature-sm p{font-size:15px;color:var(--c-ink-2);line-height:1.75}
.icon-block{
  width:46px;height:46px;border-radius:14px;background:var(--grad-cool);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;margin-bottom:18px;font-variant-numeric:tabular-nums;
}
.tag{
  display:inline-block;padding:4px 12px;border-radius:var(--r-pill);
  border:1px solid rgba(18,191,160,.35);background:rgba(18,191,160,.08);
  color:#0E9B80;font-size:12px;font-weight:600;letter-spacing:.02em;margin-bottom:14px;
}
.mini-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.mini-badges span{
  padding:5px 12px;border-radius:var(--r-pill);background:var(--c-surface-2);
  font-size:12px;font-weight:600;color:var(--c-primary-deep);
}

/* ============ 系统要求 ============ */
.req-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.req-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease;
}
.req-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.req-head{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.req-logo{
  width:46px;height:46px;border-radius:14px;background:var(--grad-deep);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
}
.req-head h3{font-size:19px}
.req-head p{font-size:13px;color:var(--c-muted);margin-top:2px}
.req-list li{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px solid var(--c-line)}
.req-list li:last-child{border-bottom:0;padding-bottom:0}
.req-k{font-size:14px;color:var(--c-muted)}
.req-v{font-size:14px;font-weight:700;color:var(--c-ink);font-variant-numeric:tabular-nums}
.ver-badge{
  display:inline-block;padding:4px 11px;border-radius:var(--r-pill);
  background:rgba(18,191,160,.1);color:#0E9B80;font-size:13px;font-weight:700;
  font-style:normal;font-variant-numeric:tabular-nums;
}

/* ============ 评价墙 ============ */
.wall{columns:3;column-gap:24px}
.wall-card{
  break-inside:avoid;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:24px;margin:0 0 24px;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.wall-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.wall-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--grad-cool);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;flex:0 0 auto;
}
.wall-name{font-size:15px;font-weight:700;color:var(--c-ink)}
.wall-device{font-size:12px;color:var(--c-muted)}
.stars{color:var(--c-accent);font-size:14px;letter-spacing:2px;margin-bottom:10px}
.wall-text{font-size:15px;color:var(--c-ink-2);line-height:1.75}
.wall-time{display:block;margin-top:14px;font-size:12px;color:var(--c-muted)}

/* ============ 下载 CTA ============ */
.cta-band{position:relative;background:var(--grad-deep);color:#fff;overflow:hidden}
.cta-band::before,.cta-band::after{content:"";position:absolute;left:0;right:0;height:2px;background:var(--grad-brand)}
.cta-band::before{top:0}
.cta-band::after{bottom:0}
.cta-glow{
  position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,90,43,.28),transparent 66%);pointer-events:none;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.45fr .55fr;gap:48px;align-items:center;padding:72px 0}
.cta-title{font-size:clamp(24px,3.6vw,34px);line-height:1.3;color:#fff;margin-bottom:14px}
.cta-desc{font-size:16px;color:rgba(255,255,255,.72);max-width:560px;margin-bottom:28px;line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.qr-card{
  background:#fff;border-radius:var(--r-lg);padding:20px;text-align:center;
  color:var(--c-ink);box-shadow:0 22px 44px rgba(0,0,0,.3);
}
.qr-box{
  width:100%;aspect-ratio:1/1;border-radius:var(--r-md);border:1px solid var(--c-line);
  margin-bottom:12px;
  background-image:repeating-conic-gradient(var(--c-ink) 0% 25%,#fff 0% 50%);
  background-size:16px 16px;background-position:50% 50%;
}
.qr-card strong{display:block;font-size:14px;font-weight:700;margin-bottom:4px}
.qr-card span{font-size:12px;color:var(--c-muted);line-height:1.6}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.news-thumb{display:block;aspect-ratio:16/10;background:var(--c-surface-2);overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.news-card:hover .news-thumb img{transform:scale(1.05)}
.news-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-title{font-size:17px;line-height:1.5;font-weight:700;color:var(--c-ink)}
.news-title a:hover{color:var(--c-primary)}
.news-excerpt{
  font-size:14px;color:var(--c-muted);line-height:1.72;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:6px;font-size:13px;color:var(--c-muted);
}
.news-meta .cat{
  padding:3px 10px;border-radius:var(--r-pill);border:1px solid rgba(18,191,160,.32);
  color:#0E9B80;font-size:12px;font-weight:600;
}
.empty-state{
  grid-column:1/-1;min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;background:#fff;border:1px dashed var(--c-line);border-radius:var(--r-lg);
  color:var(--c-muted);font-size:15px;text-align:center;padding:32px;
}
.empty-state .empty-ico{
  width:44px;height:44px;border-radius:50%;border:1px dashed var(--c-line);
  display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--c-primary);
}

/* ============ FAQ ============ */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;transition:box-shadow .25s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad-brand);
  opacity:0;transition:opacity .25s ease;
}
.faq-item[open]{box-shadow:var(--sh-1)}
.faq-item[open]::before{opacity:1}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--c-ink);
  cursor:pointer;list-style:none;
}
.faq-q::-webkit-details-marker{display:none}
.faq-q::after{
  content:"+";font-size:22px;font-weight:400;line-height:1;color:var(--c-primary);
  transition:transform .25s ease;flex:0 0 auto;
}
.faq-item[open] .faq-q::after{transform:rotate(45deg)}
.faq-a{padding:0 24px 22px;font-size:15px;color:var(--c-ink-2);line-height:1.8}
.faq-a p+p{margin-top:10px}

/* ============ 页脚 ============ */
.site-footer{position:relative;background:var(--grad-deep);color:rgba(255,255,255,.72);padding-top:72px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-brand)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.35fr;gap:40px;padding-bottom:52px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.85;margin-top:18px;max-width:300px}
.footer-note{font-size:13px;color:rgba(255,255,255,.5)}
.footer-col h3{font-size:16px;color:#fff;margin-bottom:18px;font-weight:700}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.68)}
.footer-col ul a:hover{color:#fff}
.footer-col>p{font-size:13.5px;line-height:1.75;color:rgba(255,255,255,.6)}
.sub-form{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}
.sub-form input{
  flex:1 1 150px;height:48px;border-radius:var(--r-sm);border:1px solid transparent;
  background:#fff;color:var(--c-ink);padding:0 14px;font-size:14px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.sub-form input::placeholder{color:var(--c-muted)}
.sub-form input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(255,90,43,.18)}
.form-note{display:block;margin-top:10px;font-size:13px;color:var(--c-secondary)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--sec-pad:72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-sub{max-width:100%}
  .hero-bg{width:520px;height:440px;right:-180px}
  .shots-viewport{grid-auto-columns:calc((100% - 24px)/2)}
  .feature-lg{grid-column:span 12}
  .feature-sm{grid-column:span 6}
  .wall{columns:2}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{grid-template-columns:1fr;gap:36px;padding:60px 0}
  .qr-card{max-width:280px}
}
@media (max-width:900px){
  .nav-side{display:none}
  .nav-wrap{justify-content:center;height:64px}
  .nav-toggle{display:flex;right:-6px}
  .site-header.is-scrolled .nav-wrap{height:60px}
}
@media (max-width:768px){
  :root{--sec-pad:56px}
  .container{padding:0 16px}
  body{font-size:15.5px;line-height:1.8}
  .hero{padding:48px 0 60px}
  .hero-title{margin-bottom:14px}
  .hero-sub{font-size:16px;margin-bottom:24px}
  .hero-actions{gap:12px;margin-bottom:26px}
  .hero-actions .btn{flex:1 1 auto;min-width:150px}
  .hero-actions .btn-ghost{flex:1 1 100%;justify-content:flex-start}
  .req-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:22px}
  .footer-grid{padding-bottom:40px}
}
@media (max-width:640px){
  .shots-viewport{grid-auto-columns:80%}
  .feature-sm{grid-column:span 12}
  .wall{columns:1}
  .news-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:520px){
  .hero-float{width:132px;right:0}
  .brand-text{font-size:16px}
  .chip{padding:7px 12px;font-size:12px}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#FF5A2B;
  --c-primary-deep:#E23E12;
  --c-secondary:#12BFA0;
  --c-accent:#FFC53D;
  --c-ink:#14161B;
  --c-ink-2:#3A4150;
  --c-muted:#6B7280;
  --c-line:rgba(20,22,27,.08);
  --c-bg:#F7F5F2;
  --c-surface:#FFFFFF;
  --c-surface-2:#FFF3EC;
  --grad-brand:linear-gradient(118deg,#FF7A3D 0%,#FF4A6B 48%,#A93BFF 100%);
  --grad-deep:linear-gradient(160deg,#1B1D24 0%,#2A1E2B 100%);
  --grad-cool:linear-gradient(120deg,#12BFA0,#0E9BE0);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 6px 18px rgba(20,22,27,.06);
  --sh-2:0 14px 36px rgba(20,22,27,.10);
  --sh-brand:0 12px 28px rgba(255,90,43,.28);
  --container:1200px;
  --pad-block:88px;
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-ink-2);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary)}
button{font-family:inherit}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul,ol{margin:0 0 16px;padding-left:20px}
h1,h2,h3,h4{margin:0 0 16px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(30px,5vw,46px);line-height:1.2;letter-spacing:-.02em}
h2{font-size:clamp(24px,3.4vw,32px)}
h3{font-size:20px;line-height:1.4;font-weight:600}
input,select,textarea{font-family:inherit;font-size:15px}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ============ 容器 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
main{display:block}
.section{padding:var(--pad-block) 0}
.section-tight{padding:56px 0}
.section-head{margin-bottom:32px;max-width:760px}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--c-ink-2);font-size:16px;margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--c-primary);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad-brand)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,242,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:background .25s ease,box-shadow .25s ease,height .25s ease;
}
.site-header.is-stuck{background:#fff;box-shadow:var(--sh-1)}
.nav-wrap{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;
  height:76px;gap:18px;
  transition:height .25s ease;
}
.site-header.is-stuck .nav-wrap{height:64px}
.nav-side{display:flex;align-items:center;gap:26px;flex:1 1 0}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end}
.nav-link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--c-ink-2);
  padding:8px 2px;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:2px;height:2px;width:0;
  background:var(--grad-brand);border-radius:2px;transition:width .25s ease;
}
.nav-link:hover,.nav-link:focus-visible{color:var(--c-primary)}
.nav-link:hover::after,.nav-link:focus-visible::after{width:100%}
.nav-link.is-active{color:var(--c-primary);font-weight:700}
.nav-link.is-active::after{width:100%}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  flex:0 0 auto;color:var(--c-ink);font-weight:700;
}
.brand:hover{color:var(--c-ink)}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  background:var(--grad-brand);
  position:relative;flex:0 0 auto;
  box-shadow:0 6px 16px rgba(255,90,43,.30);
}
.brand-mark::before{
  content:"";position:absolute;inset:9px;
  border:2.5px solid #fff;border-radius:50%;
  border-right-color:transparent;border-bottom-color:transparent;
  transform:rotate(-45deg);
}
.brand-mark::after{
  content:"";position:absolute;left:50%;top:50%;width:7px;height:7px;
  border-radius:50%;background:#fff;transform:translate(-50%,-50%);
}
.brand-text{font-size:19px;letter-spacing:-.01em;white-space:nowrap}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;
  padding:12px 24px;
  border-radius:var(--r-pill);
  border:1.5px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;
  cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  text-align:center;
}
.btn-sm{padding:9px 18px;min-height:40px;font-size:14px}
.btn-primary{
  background:var(--grad-brand);color:#fff;
  box-shadow:var(--sh-brand);
}
.btn-primary:hover,.btn-primary:focus-visible{
  color:#fff;transform:translateY(-2px);
  box-shadow:0 16px 32px rgba(255,90,43,.38);
  background:linear-gradient(150deg,#FF7A3D 0%,#FF4A6B 55%,#A93BFF 100%);
}
.btn-primary:active{transform:translateY(0);background:var(--c-primary-deep);box-shadow:none}
.btn-outline{
  background:#fff;color:var(--c-primary);border-color:var(--c-primary);
}
.btn-outline:hover,.btn-outline:focus-visible{background:var(--c-surface-2);color:var(--c-primary-deep);transform:translateY(-2px)}
.btn-ghost{
  background:transparent;color:var(--c-ink-2);border-color:transparent;padding-left:8px;padding-right:8px;
}
.btn-ghost:hover{color:var(--c-primary);transform:translateX(3px)}
.btn-light{background:#fff;color:var(--c-ink)}
.btn-light:hover{background:var(--c-surface-2);color:var(--c-primary-deep);transform:translateY(-2px)}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn-block{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* 移动导航 */
.nav-toggle{
  display:none;
  width:46px;height:46px;border-radius:12px;
  border:1px solid var(--c-line);background:#fff;
  padding:0;cursor:pointer;
  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(--c-ink);transition:transform .25s ease,opacity .25s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-drawer{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:#fff;
  padding:88px 20px 24px;
  transform:translateY(-102%);
  transition:transform .32s cubic-bezier(.4,.1,.2,1);
  box-shadow:var(--sh-2);
  max-height:100vh;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateY(0)}
.nav-drawer ul{list-style:none;margin:0 0 20px;padding:0}
.nav-drawer li+li{border-top:1px solid var(--c-line)}
.nav-drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;font-size:16px;color:var(--c-ink-2);font-weight:500;
}
.nav-drawer a.drawer-link.is-active{color:var(--c-primary);font-weight:700}
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,22,27,.42);
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
body.no-scroll{overflow:hidden}

/* ============ 面包屑 ============ */
.breadcrumb-bar{padding:18px 0 0;background:var(--c-surface-2)}
.breadcrumb{
  list-style:none;margin:0;padding:0;
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--c-muted);
}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:rgba(20,22,27,.25)}
.breadcrumb a{color:var(--c-muted)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .current{color:var(--c-ink-2);font-weight:600}

/* ============ 矮 Hero ============ */
.cat-hero{
  position:relative;
  min-height:260px;
  display:flex;align-items:center;
  background:var(--c-surface-2);
  overflow:hidden;
  padding:28px 0 34px;
}
.cat-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--grad-brand);
}
.cat-hero::before{
  content:"";position:absolute;top:-120px;right:-80px;width:420px;height:420px;
  background:var(--grad-brand);opacity:.10;border-radius:50%;
  filter:blur(6px);
}
.cat-hero .container{position:relative;z-index:2}
.cat-hero h1{margin:8px 0 14px;max-width:900px}
.cat-hero p{color:var(--c-ink-2);max-width:720px;font-size:16.5px;margin:0}
.cat-hero .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}

/* ============ 标签 / 徽章 ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;color:var(--c-secondary);
  border:1px solid rgba(18,191,160,.42);background:#fff;
}
.tag-accent{color:#B7791F;border-color:rgba(255,197,61,.62);background:#FFFBEE}
.badge-row{
  display:flex;flex-wrap:wrap;gap:16px;
}
.badge{
  display:inline-flex;align-items:center;gap:12px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-pill);
  padding:10px 20px 10px 12px;box-shadow:var(--sh-1);
}
.badge i,
.badge .badge-ico{
  width:34px;height:34px;border-radius:50%;
  background:var(--grad-cool);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;flex:0 0 auto;
}
.badge .badge-txt{display:flex;flex-direction:column;line-height:1.25}
.badge .badge-txt b{font-size:14px;font-weight:700}
.badge .badge-txt span{font-size:12.5px;color:var(--c-muted)}

/* ============ 数据带 ============ */
.stat-strip{
  background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
  padding:32px 0;
}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{text-align:left;padding-left:18px;border-left:3px solid var(--c-surface-2);position:relative}
.stat-item::before{content:"";position:absolute;left:-3px;top:0;height:28px;width:3px;background:var(--grad-brand);border-radius:2px}
.stat-num{font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.1;letter-spacing:-.02em}
.stat-num em{font-style:normal;font-size:15px;font-weight:600;color:var(--c-muted);margin-left:2px}
.stat-label{font-size:13px;color:var(--c-muted);margin-top:4px}

/* ============ 图文交错 ============ */
.zigzag{padding-top:8px}
.zz-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  margin-bottom:72px;
}
.zz-row:last-child{margin-bottom:0}
.zz-row.reverse .zz-media{order:2}
.zz-row.reverse .zz-body{order:1}
.zz-media{position:relative}
.zz-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--r-xl);
  box-shadow:var(--sh-2);
  background:var(--c-surface-2);
}
.zz-media::after{
  content:"";position:absolute;left:18px;top:18px;right:-18px;bottom:-18px;
  border:1px solid rgba(255,90,43,.28);border-radius:var(--r-xl);z-index:-1;
}
.zz-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:50%;
  border:1.5px solid rgba(255,90,43,.45);
  color:var(--c-primary);font-weight:700;font-size:15px;
  margin-bottom:14px;background:#fff;
}
.zz-body h2{font-size:clamp(22px,2.8vw,28px);margin-bottom:14px}
.zz-body p{color:var(--c-ink-2);margin-bottom:18px}
.zz-list{list-style:none;margin:0;padding:0}
.zz-list li{
  position:relative;padding-left:26px;margin-bottom:12px;
  color:var(--c-ink-2);font-size:15.5px;
}
.zz-list li::before{
  content:"";position:absolute;left:0;top:.62em;
  width:9px;height:9px;border-radius:3px;
  background:var(--grad-cool);
}
.zz-list li:last-child{margin-bottom:0}

/* ============ 场景卡 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  position:relative;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease;
}
.card::after{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:var(--grad-brand);opacity:0;transition:opacity .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.card:hover::after{opacity:1}
.card h3{margin-bottom:10px}
.card p{color:var(--c-ink-2);font-size:15px;margin-bottom:16px}
.card-icon{
  width:46px;height:46px;border-radius:14px;
  background:var(--grad-cool);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:18px;margin-bottom:16px;
}
.card-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}

/* ============ FAQ ============ */
.faq-list{max-width:900px}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  margin-bottom:14px;overflow:hidden;position:relative;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--grad-brand);opacity:0;transition:opacity .25s ease;
}
.faq-item[open]{box-shadow:var(--sh-1);border-color:rgba(255,90,43,.22)}
.faq-item[open]::before{opacity:1}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--c-ink);
  min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .faq-plus{
  flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .25s ease;
}
.faq-item summary .faq-plus::before,
.faq-item summary .faq-plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-item summary .faq-plus::before{width:13px;height:2px}
.faq-item summary .faq-plus::after{width:2px;height:13px}
.faq-item[open] summary .faq-plus{transform:rotate(135deg)}
.faq-answer{padding:0 24px 22px;color:var(--c-ink-2);font-size:15px;line-height:1.8}

/* ============ CTA ============ */
.cta-band{
  background:var(--grad-deep);
  color:#fff;
  position:relative;
  padding:72px 0;
}
.cta-band::before,.cta-band::after{
  content:"";position:absolute;left:0;right:0;height:2px;background:var(--grad-brand);
}
.cta-band::before{top:0}
.cta-band::after{bottom:0}
.cta-inner{display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:center}
.cta-band h2{color:#fff;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.76);margin-bottom:24px;max-width:560px}
.cta-buttons{display:flex;flex-wrap:wrap;gap:14px}
.qr-card{
  background:#fff;color:var(--c-ink);
  border-radius:var(--r-lg);padding:22px;text-align:center;
  box-shadow:var(--sh-2);max-width:280px;margin-left:auto;
}
.qr-box{
  width:100%;aspect-ratio:1/1;border-radius:var(--r-sm);
  background:var(--c-surface-2);
  display:flex;align-items:center;justify-content:center;
  color:var(--c-muted);font-size:13px;margin-bottom:12px;
  border:1px dashed rgba(20,22,27,.16);
}
.qr-card strong{display:block;font-size:15px;margin-bottom:4px}
.qr-card span{font-size:12.5px;color:var(--c-muted)}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--grad-deep);
  color:rgba(255,255,255,.78);
  padding:64px 0 0;
  position:relative;
}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad-brand)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:36px;padding-bottom:44px}
.site-footer .brand{color:#fff;margin-bottom:16px}
.site-footer .brand:hover{color:#fff}
.footer-brand p{font-size:14.5px;color:rgba(255,255,255,.72);margin-bottom:10px;max-width:320px}
.footer-note{font-size:13px;color:rgba(255,255,255,.5)}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.72);font-size:14.5px}
.footer-col a:hover{color:#fff}
.footer-col p{font-size:14px;color:rgba(255,255,255,.7);margin-bottom:14px}
.sub-form{display:flex;gap:10px;flex-wrap:wrap}
.sub-form input{
  flex:1 1 160px;min-height:48px;height:48px;
  border-radius:var(--r-sm);border:1.5px solid transparent;
  background:#fff;color:var(--c-ink);padding:0 14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.sub-form input::placeholder{color:var(--c-muted)}
.sub-form input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(255,90,43,.18)}
.form-note{display:block;font-size:12.5px;color:var(--c-accent);margin-top:8px;min-height:16px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom p{margin:0}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--pad-block:72px}
  .nav-side{gap:16px}
  .nav-link{font-size:14px}
  .brand-text{font-size:17px}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .qr-card{margin-left:0}
}
@media (max-width:900px){
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:flex}
  .nav-wrap{justify-content:space-between}
  .brand{position:absolute;left:50%;transform:translateX(-50%)}
  .zz-row{grid-template-columns:1fr;gap:32px;margin-bottom:56px}
  .zz-row.reverse .zz-media{order:1}
  .zz-row.reverse .zz-body{order:2}
  .zz-media::after{display:none}
}
@media (max-width:640px){
  :root{--pad-block:56px}
  body{font-size:15.5px;line-height:1.8}
  .container{padding-left:16px;padding-right:16px}
  .cat-hero{min-height:200px;padding:20px 0 26px}
  .cat-hero p{font-size:15.5px}
  .badge-row{gap:10px}
  .badge{padding:8px 16px 8px 10px}
  .badge i,.badge .badge-ico{width:30px;height:30px;font-size:13px}
  .stat-grid{grid-template-columns:1fr 1fr;gap:16px}
  .scene-grid{grid-template-columns:1fr}
  .card{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .btn-row .btn{flex:1 1 100%}
  .zz-media img{aspect-ratio:16/12}
  .cta-band{padding:56px 0}
  .faq-item summary{padding:16px 18px;font-size:15.5px}
  .faq-answer{padding:0 18px 18px}
}

/* roulang page: article */
:root{
  --c-primary:#FF5A2B;
  --c-primary-deep:#E23E12;
  --c-secondary:#12BFA0;
  --c-accent:#FFC53D;
  --c-ink:#14161B;
  --c-ink-2:#3A4150;
  --c-muted:#6B7280;
  --c-line:rgba(20,22,27,.08);
  --c-bg:#F7F5F2;
  --c-surface:#FFFFFF;
  --c-surface-2:#FFF3EC;
  --grad-brand:linear-gradient(118deg,#FF7A3D 0%,#FF4A6B 48%,#A93BFF 100%);
  --grad-deep:linear-gradient(160deg,#1B1D24 0%,#2A1E2B 100%);
  --grad-cool:linear-gradient(120deg,#12BFA0,#0E9BE0);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 6px 18px rgba(20,22,27,.06);
  --sh-2:0 14px 36px rgba(20,22,27,.10);
  --sh-brand:0 12px 28px rgba(255,90,43,.28);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img,svg{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== Header / Nav ===== */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(247,245,242,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s,box-shadow .25s,border-color .25s;
}
.site-header.is-stuck{background:#fff;box-shadow:var(--sh-1);border-bottom-color:var(--c-line)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:76px;gap:16px;transition:height .25s}
.site-header.is-stuck .nav-wrap{height:64px}
.nav-side{display:flex;align-items:center;gap:24px}
.nav-left{flex:1;justify-content:flex-start}
.nav-right{flex:1;justify-content:flex-end;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{
  width:32px;height:32px;border-radius:10px;background:var(--grad-brand);
  position:relative;box-shadow:var(--sh-brand);flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;left:9px;top:9px;width:14px;height:14px;
  border:2px solid rgba(255,255,255,.92);border-radius:4px;transform:rotate(45deg);
}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.02em;color:var(--c-ink);white-space:nowrap}
.nav-link{position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;transition:color .2s;white-space:nowrap}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--grad-brand);transform:scaleX(0);transform-origin:left;transition:transform .25s;
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--c-primary);font-weight:600}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:none;cursor:pointer;
  transition:transform .25s,box-shadow .25s,background .25s,color .25s;white-space:nowrap;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-brand)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(255,90,43,.34);color:#fff}
.btn-primary:active{transform:translateY(0);background:var(--c-primary-deep)}
.btn-outline{background:#fff;color:var(--c-primary);border:1.5px solid var(--c-primary)}
.btn-outline:hover{background:var(--c-surface-2);color:var(--c-primary-deep)}
.btn-ghost{background:transparent;color:var(--c-ink-2);padding:0 8px;height:auto;font-weight:500}
.btn-ghost:hover{color:var(--c-primary)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:.25s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== Drawer ===== */
.drawer{
  position:fixed;left:0;right:0;top:76px;bottom:0;z-index:110;background:#fff;
  padding:8px 0 110px;overflow-y:auto;
  opacity:0;visibility:hidden;transform:translateY(-14px);transition:.25s;
}
.drawer.open{opacity:1;visibility:visible;transform:none}
.drawer a{
  display:flex;align-items:center;height:52px;padding:0 20px;font-size:16px;
  color:var(--c-ink-2);border-bottom:1px solid var(--c-line);
}
.drawer a:active{background:var(--c-surface-2);color:var(--c-primary)}
.drawer-cta{margin:18px 20px 0;justify-content:center;height:50px;border-radius:var(--r-pill);border-bottom:none}
.drawer-cta:active{background:var(--c-primary-deep)}

/* ===== Breadcrumb ===== */
.article-top{padding:26px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-muted)}
.breadcrumb a{color:var(--c-ink-2);transition:color .2s}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:rgba(20,22,27,.25)}
.breadcrumb .cur{color:var(--c-muted)}

/* ===== Article head ===== */
.article-head{padding:22px 0 30px}
.head-inner{max-width:860px;margin:0 auto}
.article-title{
  font-size:clamp(26px,4.2vw,40px);line-height:1.24;font-weight:700;
  letter-spacing:-.02em;color:var(--c-ink);
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:20px}
.badge-cat{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--c-surface-2);color:var(--c-primary-deep);font-size:13px;font-weight:600;
  border:1px solid rgba(255,90,43,.22);
}
.meta-item{font-size:13.5px;color:var(--c-muted);font-variant-numeric:tabular-nums}
.meta-item b{color:var(--c-ink-2);font-weight:600}

/* ===== Article body ===== */
.article-main{padding-bottom:48px}
.article-shell{
  max-width:860px;margin:0 auto;background:var(--c-surface);
  border-radius:var(--r-xl);box-shadow:var(--sh-1);
  padding:46px 48px 52px;position:relative;overflow:hidden;
}
.article-shell::before{
  content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--grad-brand);
}
.article-content{
  max-width:760px;margin:0 auto;font-size:17px;line-height:1.9;color:var(--c-ink-2);
  word-break:break-word;overflow-wrap:break-word;
}
.article-content p{margin:0 0 1.5em}
.article-content h2{
  position:relative;font-size:clamp(21px,2.6vw,26px);line-height:1.4;font-weight:700;
  color:var(--c-ink);margin:44px 0 18px;padding-left:16px;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:4px;background:var(--grad-brand);
}
.article-content h3{font-size:19px;font-weight:600;color:var(--c-ink);margin:30px 0 12px}
.article-content h4{font-size:17px;font-weight:600;color:var(--c-ink);margin:22px 0 10px}
.article-content blockquote{
  margin:26px 0;padding:18px 22px;background:var(--c-surface-2);
  border-left:3px solid var(--c-primary);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--c-ink-2);
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content img{border-radius:var(--r-lg);margin:26px 0;width:100%;height:auto;background:var(--c-surface-2)}
.article-content figure{margin:26px 0}
.article-content figure img{margin:0}
.article-content figcaption{font-size:13.5px;color:var(--c-muted);text-align:center;margin-top:10px}
.article-content ul,.article-content ol{margin:0 0 1.5em;list-style:none}
.article-content ul li{position:relative;padding-left:20px;margin-bottom:10px}
.article-content ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--c-secondary);
}
.article-content ol{counter-reset:cmsli}
.article-content ol li{position:relative;padding-left:30px;margin-bottom:10px;counter-increment:cmsli}
.article-content ol li::before{
  content:counter(cmsli);position:absolute;left:0;top:.3em;width:20px;height:20px;border-radius:50%;
  background:var(--c-surface-2);color:var(--c-primary-deep);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;
}
.article-content a{color:var(--c-primary-deep);text-decoration:underline;text-underline-offset:3px}
.article-content a:hover{color:var(--c-primary)}
.article-content strong{color:var(--c-ink);font-weight:700}
.article-content table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15.5px;background:#fff}
.article-content th,.article-content td{border:1px solid var(--c-line);padding:12px 14px;text-align:left}
.article-content th{background:var(--c-surface-2);color:var(--c-ink);font-weight:600}
.article-content hr{border:none;height:0;margin:36px auto;width:120px;border-top:2px dashed rgba(20,22,27,.14)}
.article-content code{
  background:var(--c-surface-2);color:var(--c-primary-deep);padding:2px 6px;border-radius:6px;font-size:15px;
}

/* ===== Empty ===== */
.empty-state{
  max-width:760px;margin:0 auto;min-height:200px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:16px;text-align:center;color:var(--c-muted);
}
.empty-icon{
  width:56px;height:56px;border-radius:50%;background:var(--c-surface-2);
  border:1px dashed rgba(255,90,43,.4);position:relative;
}
.empty-icon::after{
  content:"";position:absolute;left:50%;top:50%;width:16px;height:16px;margin:-8px 0 0 -8px;
  border:2px solid var(--c-primary);border-radius:4px;
}
.empty-state p{font-size:16px;color:var(--c-ink-2)}

/* ===== Article foot ===== */
.article-foot{padding:0 0 56px}
.foot-inner{
  max-width:860px;margin:0 auto;background:var(--c-surface);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:24px 28px;display:flex;flex-wrap:wrap;gap:16px;
  align-items:center;justify-content:space-between;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:var(--r-pill);
  border:1px solid rgba(18,191,160,.35);background:rgba(18,191,160,.07);
  color:#0E9B84;font-size:13px;font-weight:500;transition:.2s;
}
.tag:hover{background:rgba(18,191,160,.14)}
.foot-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ===== Related ===== */
.related{padding:0 0 88px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,3vw,30px);line-height:1.3;font-weight:700;letter-spacing:-.01em}
.section-head .sub{font-size:14.5px;color:var(--c-muted);margin-top:8px}
.link-more{font-size:14.5px;font-weight:600;color:var(--c-primary);position:relative}
.link-more::after{content:"›";margin-left:4px}
.link-more:hover{color:var(--c-primary-deep)}
.related-grid{margin-left:-12px;margin-right:-12px;display:flex;flex-wrap:wrap}
.related-grid > .column{padding-left:12px;padding-right:12px;margin-bottom:24px}
.post-card{
  background:var(--c-surface);border-radius:var(--r-lg);box-shadow:var(--sh-1);
  overflow:hidden;height:100%;display:flex;flex-direction:column;position:relative;
  transition:transform .25s,box-shadow .25s;
}
.post-card::after{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--grad-brand);
  transform:scaleX(0);transform-origin:left;transition:transform .25s;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.post-card:hover::after{transform:scaleX(1)}
.post-thumb{display:block;position:relative;background:var(--c-surface-2);overflow:hidden}
.post-thumb img{width:100%;height:190px;object-fit:cover;transition:transform .4s}
.post-card:hover .post-thumb img{transform:scale(1.05)}
.play-badge{
  position:absolute;right:14px;bottom:14px;width:38px;height:38px;border-radius:50%;
  background:rgba(20,22,27,.62);backdrop-filter:blur(4px);
}
.play-badge::after{
  content:"";position:absolute;left:14px;top:11px;border-style:solid;
  border-width:8px 0 8px 13px;border-color:transparent transparent transparent #fff;
}
.post-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-body h3{font-size:18px;line-height:1.5;font-weight:600;color:var(--c-ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-body h3 a:hover{color:var(--c-primary)}
.post-body p{
  font-size:14.5px;line-height:1.75;color:var(--c-muted);flex:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-link{font-size:14px;font-weight:600;color:var(--c-primary)}
.post-link::after{content:"›";margin-left:4px}

/* ===== Footer ===== */
.site-footer{background:var(--grad-deep);color:rgba(255,255,255,.72);position:relative;padding:60px 0 0}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad-brand)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:14.5px;line-height:1.8;margin-top:16px;color:rgba(255,255,255,.68)}
.footer-note{font-size:13px;color:rgba(255,255,255,.5);margin-top:10px}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.68);transition:color .2s}
.footer-col a:hover{color:#FF9A6B}
.footer-col > p{font-size:14px;color:rgba(255,255,255,.62);margin-bottom:8px}
.sub-form{display:flex;gap:8px;margin-top:12px}
.sub-form input{
  flex:1;min-width:0;height:48px;border-radius:var(--r-sm);padding:0 14px;font-size:14px;
  border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);color:#fff;transition:.2s;
}
.sub-form input::placeholder{color:rgba(255,255,255,.45)}
.sub-form input:focus{outline:none;border-color:var(--c-primary);background:rgba(255,255,255,.12)}
.form-note{display:block;margin-top:10px;font-size:13px;min-height:18px}
.form-note.is-ok{color:#5BE3C6}
.form-note.is-error{color:#FF8A6B}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.5);
}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .nav-side{gap:16px}
  .nav-link{font-size:14.5px}
}
@media (max-width:900px){
  .nav-side{display:none}
  .nav-wrap{justify-content:center;position:relative;height:70px}
  .site-header.is-stuck .nav-wrap{height:64px}
  .nav-toggle{display:flex;position:absolute;right:0;top:50%;transform:translateY(-50%)}
  .drawer{top:70px}
  .article-shell{padding:34px 26px 38px;border-radius:var(--r-lg)}
  .article-content{font-size:16px}
  .article-content h2{margin-top:36px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .article-top{padding-top:18px}
  .article-title{font-size:24px;line-height:1.32}
  .article-meta{gap:10px;margin-top:16px}
  .article-shell{padding:24px 18px 30px}
  .article-content{font-size:15.5px;line-height:1.8}
  .article-content img{border-radius:var(--r-md)}
  .article-content table{font-size:14px}
  .article-content th,.article-content td{padding:9px 10px}
  .foot-inner{padding:20px;flex-direction:column;align-items:flex-start}
  .related{padding-bottom:60px}
  .post-thumb img{height:180px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;text-align:left}
  .sub-form{flex-wrap:wrap}
  .sub-form input{flex:1 1 100%}
  .sub-form .btn{width:100%}
}

/* roulang page: category3 */
:root{
  --c-primary:#FF5A2B;
  --c-primary-deep:#E23E12;
  --c-secondary:#12BFA0;
  --c-accent:#FFC53D;
  --c-ink:#14161B;
  --c-ink-2:#3A4150;
  --c-muted:#6B7280;
  --c-line:rgba(20,22,27,.08);
  --c-bg:#F7F5F2;
  --c-surface:#FFFFFF;
  --c-surface-2:#FFF3EC;
  --grad-brand:linear-gradient(118deg,#FF7A3D 0%,#FF4A6B 48%,#A93BFF 100%);
  --grad-deep:linear-gradient(160deg,#1B1D24 0%,#2A1E2B 100%);
  --grad-cool:linear-gradient(120deg,#12BFA0,#0E9BE0);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 6px 18px rgba(20,22,27,.06);
  --sh-2:0 14px 36px rgba(20,22,27,.10);
  --sh-brand:0 12px 28px rgba(255,90,43,.28);
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",Helvetica,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-ink-2);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--c-primary);}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--c-ink);}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.row{max-width:none;margin-left:-12px;margin-right:-12px;}
.row::before,.row::after{display:none;}
.column,.columns{padding-left:12px;padding-right:12px;float:none;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.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;}
::selection{background:rgba(255,90,43,.18);}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:2px;
  border-radius:6px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border:1.5px solid transparent;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
}
.btn-primary{
  background:var(--grad-brand);
  background-size:160% 160%;
  color:#fff;
  box-shadow:var(--sh-brand);
}
.btn-primary:hover{
  color:#fff;
  transform:translateY(-2px);
  background-position:100% 50%;
  box-shadow:0 18px 36px rgba(255,90,43,.34);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 18px rgba(255,90,43,.3);}
.btn-outline{
  background:var(--c-surface);
  border-color:var(--c-primary);
  color:var(--c-primary);
}
.btn-outline:hover{background:var(--c-surface-2);color:var(--c-primary-deep);transform:translateY(-2px);}
.btn-ghost{
  background:transparent;
  border-color:transparent;
  color:var(--c-ink-2);
  padding:0 12px;
  height:44px;
}
.btn-ghost:hover{color:var(--c-primary);}
.btn-ghost i{font-size:13px;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,242,.92);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-stuck{
  background:#fff;
  box-shadow:var(--sh-1);
  border-bottom-color:transparent;
}
.nav-wrap{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:76px;
  transition:height .25s ease;
}
.site-header.is-stuck .nav-wrap{height:64px;}
.nav-side{display:flex;align-items:center;gap:26px;flex:1 1 0;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--c-ink-2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  border-radius:2px;
  background:var(--grad-brand);
  transition:width .25s ease;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{width:100%;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  padding:0 10px;
}
.brand-mark{
  width:30px;
  height:30px;
  border-radius:9px;
  background:var(--grad-brand);
  position:relative;
  flex:0 0 auto;
  box-shadow:0 6px 14px rgba(255,90,43,.3);
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:0;
  margin:auto;
  width:12px;
  height:12px;
  border:2.5px solid #fff;
  border-radius:50%;
  border-top-color:transparent;
  transform:rotate(-35deg);
}
.brand-text{
  font-size:18px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--c-ink);
}
.brand:hover .brand-text{color:var(--c-primary);}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--c-line);
  border-radius:12px;
  background:var(--c-surface);
  padding:0;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--c-ink);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-drawer{
  display:none;
  position:fixed;
  top:76px;
  left:0;
  right:0;
  bottom:0;
  z-index:55;
  background:#fff;
  padding:12px 24px 30px;
  overflow-y:auto;
  border-top:1px solid var(--c-line);
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
  display:flex;
  align-items:center;
  height:52px;
  font-size:16px;
  font-weight:500;
  color:var(--c-ink-2);
  border-bottom:1px solid var(--c-line);
}
.mobile-drawer a.is-active{color:var(--c-primary);}
.mobile-drawer .btn{margin-top:20px;height:50px;}

/* ---------- 分类页首屏 ---------- */
.cat-hero{
  position:relative;
  overflow:hidden;
  background:var(--c-surface-2);
  padding:38px 0 34px;
  min-height:200px;
}
.cat-hero::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--grad-brand);
}
.cat-hero::before{
  content:"";
  position:absolute;
  right:-70px;
  top:-90px;
  width:300px;
  height:300px;
  border-radius:44px;
  background:var(--grad-brand);
  opacity:.10;
  transform:rotate(20deg);
}
.cat-hero-inner{position:relative;z-index:2;}
.breadcrumb{margin-bottom:14px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;}
.breadcrumb li{display:flex;align-items:center;gap:8px;color:var(--c-muted);}
.breadcrumb li+li::before{content:"/";color:rgba(20,22,27,.22);}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .current{color:var(--c-ink-2);font-weight:600;}
.cat-hero h1{
  font-size:clamp(30px,5vw,46px);
  line-height:1.2;
  letter-spacing:-.02em;
  max-width:820px;
  margin-bottom:14px;
}
.cat-hero .hero-sub{
  max-width:720px;
  font-size:16px;
  color:var(--c-ink-2);
  margin-bottom:22px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--c-secondary);
  margin-bottom:12px;
}
.eyebrow i{font-size:12px;}
.section-title{
  font-size:clamp(24px,3.4vw,32px);
  line-height:1.3;
  margin-bottom:12px;
}
.section-sub{color:var(--c-ink-2);font-size:15.5px;}
.section-alt{background:var(--c-surface);}
.section-warm{background:var(--c-surface-2);}

/* ---------- 卡片 ---------- */
.grid-row{margin-bottom:0;}
.card{
  position:relative;
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease;
}
.card::after{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:3px;
  background:var(--grad-brand);
  opacity:0;
  transition:opacity .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.card:hover::after{opacity:1;}
.card-media{
  position:relative;
  background:var(--c-surface-2);
  overflow:hidden;
}
.card-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.card:hover .card-media img{transform:scale(1.03);}
.card-media.tall{aspect-ratio:16/9;}
.card-media.mid{aspect-ratio:16/10;}
.card-body{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1 1 auto;}
.card-title{font-size:20px;line-height:1.4;font-weight:600;margin-bottom:10px;}
.card-title.lg{font-size:23px;}
.card-text{color:var(--c-ink-2);font-size:15px;margin-bottom:16px;}
.card-foot{margin-top:auto;}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:30px;
  padding:0 12px;
  border-radius:var(--r-pill);
  border:1px solid rgba(18,191,160,.4);
  background:rgba(18,191,160,.08);
  color:#0B8A74;
  font-size:13px;
  font-weight:600;
  font-variant-numeric:tabular-nums;
  white-space:nowrap;
}
.badge i{font-size:11px;}
.badge.solid{
  border-color:transparent;
  background:var(--grad-cool);
  color:#fff;
}
.badge.warm{
  border-color:rgba(255,90,43,.35);
  background:rgba(255,90,43,.08);
  color:var(--c-primary-deep);
}
.badge.gold{
  border-color:rgba(255,197,61,.55);
  background:rgba(255,197,61,.14);
  color:#9A6A00;
}
.tag-pill{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 12px;
  border-radius:var(--r-pill);
  border:1px solid rgba(18,191,160,.4);
  color:#0B8A74;
  font-size:12.5px;
  font-weight:600;
}

/* ---------- 数据徽章带 ---------- */
.stat-strip{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-xl);
  box-shadow:var(--sh-1);
  padding:10px 8px;
}
.stat-item{
  display:flex;
  align-items:center;
  gap:14px;
  padding:22px 20px;
  border-radius:var(--r-md);
  height:100%;
  transition:background .25s ease;
}
.stat-item:hover{background:var(--c-surface-2);}
.stat-icon{
  width:46px;
  height:46px;
  border-radius:14px;
  background:var(--grad-cool);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:18px;
  flex:0 0 auto;
}
.stat-num{
  font-size:22px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  line-height:1.2;
  letter-spacing:-.01em;
}
.stat-label{font-size:13px;color:var(--c-muted);}

/* ---------- 系统要求 def-list ---------- */
.spec-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:26px 26px 20px;
  height:100%;
}
.spec-head{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.spec-head .spec-icon{
  width:42px;height:42px;border-radius:13px;
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:18px;
  background:var(--grad-cool);
}
.spec-head h3{font-size:19px;}
.def-list{margin:0;}
.def-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:14px 0;
  border-top:1px solid var(--c-line);
}
.def-row:first-child{border-top:0;}
.def-key{display:inline-flex;align-items:center;gap:8px;color:var(--c-ink-2);font-size:14.5px;}
.def-key i{color:var(--c-secondary);font-size:13px;}
.def-val{
  font-weight:600;
  font-size:14.5px;
  font-variant-numeric:tabular-nums;
  text-align:right;
}
.def-val em{
  font-style:normal;
  display:inline-block;
  padding:2px 10px;
  border-radius:var(--r-pill);
  background:rgba(18,191,160,.1);
  color:#0B8A74;
  font-size:13px;
}

/* ---------- 更新记录 ---------- */
.upd-list{display:flex;flex-direction:column;gap:14px;}
.upd-item{
  display:flex;
  gap:22px;
  align-items:flex-start;
  padding:22px 24px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.upd-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(255,90,43,.28);}
.upd-ver{
  flex:0 0 auto;
  min-width:96px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  color:var(--c-primary);
  font-size:15px;
}
.upd-ver small{display:block;font-weight:500;color:var(--c-muted);font-size:12.5px;}
.upd-main{flex:1 1 auto;}
.upd-main h3{font-size:16px;font-weight:600;margin-bottom:6px;}
.upd-main p{font-size:14.5px;color:var(--c-ink-2);margin:0;}
.update-note{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--c-muted);
  margin-top:14px;
}

/* ---------- 安装步骤条 ---------- */
.step-line{
  display:flex;
  flex-wrap:wrap;
  gap:16px;
}
.step-chip{
  flex:1 1 200px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:20px 22px;
  box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.step-chip:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.step-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:30px;height:30px;
  border-radius:50%;
  border:2px solid var(--c-primary);
  color:var(--c-primary);
  font-size:14px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  margin-bottom:12px;
}
.step-chip h3{font-size:16px;font-weight:600;margin-bottom:6px;}
.step-chip p{font-size:14.5px;color:var(--c-ink-2);margin:0;}

/* ---------- 列表要点 ---------- */
.dot-list li{
  position:relative;
  padding-left:20px;
  margin-bottom:10px;
  color:var(--c-ink-2);
  font-size:15px;
}
.dot-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:8px;
  height:8px;
  border-radius:3px;
  background:var(--c-secondary);
}
.dot-list li:last-child{margin-bottom:0;}

/* ---------- 下载 CTA ---------- */
.cta-band{
  position:relative;
  background:var(--grad-deep);
  color:#fff;
  padding:70px 0;
}
.cta-band::before,.cta-band::after{
  content:"";
  position:absolute;
  left:0;right:0;
  height:2px;
  background:var(--grad-brand);
}
.cta-band::before{top:0;}
.cta-band::after{bottom:0;}
.cta-band h2{
  color:#fff;
  font-size:clamp(24px,3.4vw,32px);
  line-height:1.3;
  margin-bottom:12px;
}
.cta-band p{color:rgba(255,255,255,.76);font-size:15.5px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.btn-light{
  background:#fff;
  color:var(--c-ink);
  border-color:transparent;
}
.btn-light:hover{background:var(--c-surface-2);color:var(--c-primary-deep);transform:translateY(-2px);}
.btn-ghost-light{
  background:transparent;
  border-color:rgba(255,255,255,.5);
  color:#fff;
}
.btn-ghost-light:hover{border-color:#fff;background:rgba(255,255,255,.08);color:#fff;transform:translateY(-2px);}
.qr-card{
  background:#fff;
  border-radius:var(--r-lg);
  padding:22px;
  box-shadow:var(--sh-2);
  text-align:center;
  max-width:280px;
  margin-left:auto;
}
.qr-box{
  width:160px;
  height:160px;
  margin:0 auto 14px;
  border-radius:var(--r-md);
  background:
    linear-gradient(0deg,rgba(20,22,27,.06),rgba(20,22,27,.06)),
    repeating-linear-gradient(45deg,#14161B 0 8px,#fff 8px 16px);
  border:8px solid #fff;
  outline:1px solid var(--c-line);
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-size:34px;
  text-shadow:0 2px 12px rgba(0,0,0,.5);
}
.qr-card strong{display:block;color:var(--c-ink);font-size:15px;margin-bottom:6px;}
.qr-card span{font-size:12.5px;color:var(--c-muted);line-height:1.6;display:block;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--grad-deep);
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
  font-size:14.5px;
}
.site-footer .brand-text{color:#fff;}
.site-footer .brand:hover .brand-text{color:var(--c-primary);}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.4fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand p{margin:16px 0 8px;line-height:1.8;}
.footer-brand .footer-note{font-size:13px;color:rgba(255,255,255,.5);}
.footer-col h3{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:16px;
}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{color:rgba(255,255,255,.72);}
.footer-col ul a:hover{color:var(--c-primary);}
.footer-col p{color:rgba(255,255,255,.62);font-size:13.5px;margin-bottom:14px;}
.sub-form{display:flex;gap:10px;}
.sub-form input{
  flex:1 1 auto;
  min-width:0;
  height:48px;
  padding:0 14px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.18);
  background:#fff;
  color:var(--c-ink);
  font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.sub-form input::placeholder{color:var(--c-muted);}
.sub-form input:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(255,90,43,.18);
}
.form-note{display:block;margin-top:10px;font-size:12.5px;color:var(--c-secondary);min-height:18px;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  padding:22px 0 28px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:rgba(255,255,255,.52);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .qr-card{margin:28px 0 0;}
}
@media (max-width:900px){
  .nav-side{display:none;}
  .nav-toggle{display:flex;position:absolute;right:16px;top:50%;transform:translateY(-50%);}
  .nav-wrap{justify-content:center;height:68px;}
  .site-header.is-stuck .nav-wrap{height:62px;}
  .mobile-drawer{top:68px;}
  .brand{padding:0;}
  .section{padding:56px 0;}
  .section.tight{padding:48px 0;}
  .container{padding:0 16px;}
}
@media (max-width:640px){
  body{font-size:15.5px;line-height:1.8;}
  .cat-hero{padding:28px 0 26px;}
  .cat-hero h1{margin-bottom:12px;}
  .hero-actions .btn{flex:1 1 100%;}
  .stat-item{padding:16px 14px;}
  .upd-item{flex-direction:column;gap:10px;padding:20px;}
  .upd-ver{min-width:0;}
  .card-body{padding:20px;}
  .spec-card{padding:22px 20px 16px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .sub-form{flex-wrap:wrap;}
  .sub-form .btn{width:100%;}
  .cta-band{padding:52px 0;}
  .def-row{flex-direction:column;align-items:flex-start;gap:4px;}
  .def-val{text-align:left;}
}
@media (max-width:380px){
  .brand-text{font-size:16px;}
  .stat-num{font-size:19px;}
}

/* roulang page: category2 */
/* ================= 设计变量 ================= */
:root{
  --c-primary:#FF5A2B;
  --c-primary-deep:#E23E12;
  --c-secondary:#12BFA0;
  --c-accent:#FFC53D;
  --c-ink:#14161B;
  --c-ink-2:#3A4150;
  --c-muted:#6B7280;
  --c-line:rgba(20,22,27,.08);
  --c-bg:#F7F5F2;
  --c-surface:#FFFFFF;
  --c-surface-2:#FFF3EC;
  --grad-brand:linear-gradient(118deg,#FF7A3D 0%,#FF4A6B 48%,#A93BFF 100%);
  --grad-deep:linear-gradient(160deg,#1B1D24 0%,#2A1E2B 100%);
  --grad-cool:linear-gradient(120deg,#12BFA0,#0E9BE0);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 6px 18px rgba(20,22,27,.06);
  --sh-2:0 14px 36px rgba(20,22,27,.10);
  --sh-brand:0 12px 28px rgba(255,90,43,.28);
  --container:1200px;
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}

/* ================= 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-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;line-height:1.3;color:var(--c-ink);letter-spacing:-.01em}
h1{font-size:clamp(30px,5vw,46px);line-height:1.2;letter-spacing:-.02em}
h2{font-size:clamp(24px,3.4vw,32px)}
h3{font-size:20px;font-weight:600;line-height:1.4}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:var(--c-primary-deep);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary)}
button{font-family:inherit;font-size:inherit}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(255,90,43,.18)}

/* ================= 容器与栅格 ================= */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.container > .row{margin-left:-15px;margin-right:-15px}
.row{max-width:var(--container)}
.column,.columns{padding-left:15px;padding-right:15px}

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border:1.5px solid transparent;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .25s ease,box-shadow .25s ease,background-color .25s ease,color .25s ease,border-color .25s ease;
}
.btn-primary{background-image:var(--grad-brand);color:#fff;box-shadow:var(--sh-brand)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 36px rgba(255,90,43,.34)}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 18px rgba(255,90,43,.28)}
.btn-outline{background:#fff;color:var(--c-primary-deep);border-color:var(--c-primary)}
.btn-outline:hover{background:var(--c-surface-2);color:var(--c-primary-deep)}
.btn-outline:active{background:#FFE6DA}
.btn-ghost{background:transparent;color:var(--c-ink-2);padding:0 6px;min-height:44px;border-color:transparent}
.btn-ghost:hover{color:var(--c-primary)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}

/* ================= 顶部导航 ================= */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,242,.94);
  border-bottom:1px solid var(--c-line);
  transition:background-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:#fff;box-shadow:var(--sh-1)}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  height:76px;
  transition:height .25s ease;
}
.site-header.is-scrolled .nav-wrap{height:64px}
.nav-side{display:flex;align-items:center;gap:22px;flex:1 1 0;min-width:0}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 2px;
  font-size:15px;
  color:var(--c-ink-2);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:9px;
  height:2px;
  width:0;
  border-radius:2px;
  background-image:var(--grad-brand);
  transition:width .25s ease;
}
.nav-link:hover,.nav-link.active{color:var(--c-primary-deep)}
.nav-link:hover::after,.nav-link.active::after{width:100%}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  position:relative;
  width:36px;
  height:36px;
  border-radius:12px;
  background-image:var(--grad-brand);
  box-shadow:var(--sh-brand);
  flex:0 0 auto;
}
.brand-mark::before{
  content:"";
  position:absolute;
  inset:9px;
  border:2px solid #fff;
  border-radius:50%;
  border-right-color:transparent;
  border-bottom-color:transparent;
  transform:rotate(-38deg);
}
.brand-mark::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:7px;
  height:7px;
  margin:-3.5px 0 0 -3.5px;
  border-radius:50%;
  background:#fff;
}
.brand-text{font-size:18px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;white-space:nowrap}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:5px;
  width:46px;
  height:46px;
  padding:0;
  border:1px solid var(--c-line);
  border-radius:12px;
  background:#fff;
  cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink-2);transition:transform .25s ease,opacity .25s ease}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 移动抽屉 */
.nav-drawer{
  position:fixed;
  top:64px;
  left:0;
  right:0;
  bottom:0;
  z-index:55;
  display:flex;
  flex-direction:column;
  padding:12px 16px 28px;
  background:#fff;
  overflow-y:auto;
  opacity:0;
  visibility:hidden;
  transform:translateY(-10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
  box-shadow:var(--sh-2);
}
body.nav-open .nav-drawer{opacity:1;visibility:visible;transform:translateY(0)}
body.nav-open{overflow:hidden}
.nav-drawer nav{display:flex;flex-direction:column}
.nav-drawer nav a{
  display:flex;
  align-items:center;
  min-height:48px;
  padding:0 8px;
  border-bottom:1px solid var(--c-line);
  color:var(--c-ink-2);
  font-size:15px;
}
.nav-drawer nav a.is-current{color:var(--c-primary-deep);font-weight:600}
.drawer-cta{margin-top:24px;width:100%}

/* ================= 内页矮 Hero ================= */
.hero-sub{
  position:relative;
  min-height:260px;
  display:flex;
  align-items:center;
  background-color:var(--c-surface-2);
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero-sub::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(96deg,rgba(255,243,236,.96) 0%,rgba(255,243,236,.84) 52%,rgba(255,243,236,.42) 100%);
}
.hero-sub::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background-image:var(--grad-brand);
}
.hero-sub-inner{position:relative;z-index:1;padding:44px 0;max-width:800px}
.hero-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  margin-bottom:16px;
  border-radius:var(--r-pill);
  background:#fff;
  border:1px solid rgba(255,90,43,.28);
  color:var(--c-primary-deep);
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
}
.hero-kicker::before{
  content:"";
  width:8px;
  height:8px;
  border-radius:50%;
  background-image:var(--grad-cool);
}
.hero-sub h1{font-size:clamp(27px,4vw,40px);margin-bottom:14px}
.hero-sub p{max-width:660px;color:var(--c-ink-2);font-size:16px;margin-bottom:24px}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px}

/* ================= 面包屑 ================= */
.crumb-bar{padding:18px 0;background:var(--c-bg);border-bottom:1px solid var(--c-line)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted)}
.breadcrumb a{color:var(--c-ink-2)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:rgba(20,22,27,.25)}
.breadcrumb .current{color:var(--c-muted)}

/* ================= 板块 ================= */
.section{padding:88px 0}
.section-white{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-warm{background:var(--c-surface-2)}
.section-head{max-width:720px;margin-bottom:32px}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--c-ink-2);font-size:15.5px;margin:0}
.section-head-tight{margin-bottom:24px}

/* ================= 纵向时间线 ================= */
.timeline{position:relative;max-width:880px;margin:0 auto;padding:6px 0}
.timeline::before{
  content:"";
  position:absolute;
  left:23px;
  top:18px;
  bottom:18px;
  width:2px;
  border-radius:2px;
  background-image:linear-gradient(180deg,#FF7A3D 0%,#FF4A6B 55%,#A93BFF 100%);
}
.tl-item{position:relative;padding-left:78px;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-num{
  position:absolute;
  left:0;
  top:0;
  width:48px;
  height:48px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  border:4px solid var(--c-bg);
  background-image:var(--grad-brand);
  color:#fff;
  font-size:16px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  box-shadow:var(--sh-brand);
}
.section-white .tl-num{border-color:#fff}
.tl-body{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:24px 26px;
  box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.section-white .tl-body{background:var(--c-bg)}
.tl-body:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.tl-body h3{margin-bottom:10px}
.tl-body p{color:var(--c-ink-2);font-size:15.5px;margin-bottom:14px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 12px;
  border-radius:var(--r-pill);
  border:1px solid rgba(18,191,160,.45);
  background:rgba(18,191,160,.08);
  color:#0E9E86;
  font-size:13px;
  font-weight:600;
}

/* ================= 数据指标卡 ================= */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric-card{
  position:relative;
  overflow:hidden;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:26px 24px;
  box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.metric-card::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:0;
  height:3px;
  background-image:var(--grad-brand);
  opacity:0;
  transition:opacity .25s ease;
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.metric-card:hover::after{opacity:1}
.metric-value{
  display:flex;
  align-items:baseline;
  gap:6px;
  font-size:clamp(26px,3vw,34px);
  font-weight:700;
  color:var(--c-ink);
  font-variant-numeric:tabular-nums;
  line-height:1.1;
}
.metric-value .unit{font-size:15px;font-weight:600;color:var(--c-muted)}
.metric-label{margin-top:10px;font-size:14px;color:var(--c-muted);line-height:1.6}
.metric-badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 10px;
  margin-top:14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(18,191,160,.4);
  color:#0E9E86;
  font-size:13px;
  font-weight:600;
  font-variant-numeric:tabular-nums;
}

/* ================= 图文错落块 ================= */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.split-media{position:relative}
.split-media img{
  width:100%;
  height:340px;
  object-fit:cover;
  border-radius:var(--r-lg);
  box-shadow:var(--sh-2);
  background:var(--c-surface-2);
}
.split-media .float-badge{
  position:absolute;
  right:-14px;
  bottom:-18px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 18px;
  border-radius:var(--r-md);
  background:#fff;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-2);
  font-size:13px;
  color:var(--c-ink-2);
  font-weight:600;
}
.split-media .float-badge b{color:var(--c-primary-deep);font-variant-numeric:tabular-nums}
.split-copy h2{margin-bottom:16px}
.split-copy > p{color:var(--c-ink-2);font-size:15.5px}
.check-list{margin-top:20px}
.check-list li{
  position:relative;
  padding-left:26px;
  margin-bottom:12px;
  color:var(--c-ink-2);
  font-size:15.5px;
}
.check-list li:last-child{margin-bottom:0}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:10px;
  width:10px;
  height:10px;
  border-radius:3px;
  background-image:var(--grad-cool);
}

/* ================= 双卡对照 ================= */
.compare-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.compare-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.compare-head{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.icon-block{
  width:44px;
  height:44px;
  border-radius:14px;
  background-image:var(--grad-cool);
  flex:0 0 auto;
  position:relative;
}
.icon-block::after{
  content:"";
  position:absolute;
  inset:13px;
  border:2px solid #fff;
  border-radius:4px;
}
.compare-head h3{font-size:18px;margin:0}
.compare-head span{display:block;font-size:13px;color:var(--c-muted);font-weight:400}
.def-list{margin:0}
.def-row{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:18px;
  padding:13px 0;
  border-bottom:1px solid var(--c-line);
}
.def-row:last-child{border-bottom:none;padding-bottom:0}
.def-row dt{font-size:14px;color:var(--c-muted);flex:0 0 auto}
.def-row dd{
  margin:0;
  text-align:right;
  font-size:14px;
  font-weight:600;
  color:var(--c-ink);
  font-variant-numeric:tabular-nums;
}
.def-row dd .sys-badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  margin-left:6px;
  border-radius:var(--r-pill);
  border:1px solid rgba(18,191,160,.4);
  color:#0E9E86;
  font-size:12.5px;
  font-weight:600;
  vertical-align:middle;
}

/* ================= 浅底 CTA 条 ================= */
.cta-soft{
  position:relative;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
  padding:44px 46px;
  border-radius:var(--r-xl);
  background:var(--c-surface-2);
  border:1px solid rgba(255,90,43,.16);
  box-shadow:var(--sh-1);
}
.cta-soft::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:5px;
  background-image:var(--grad-brand);
}
.cta-soft h2{font-size:clamp(22px,2.6vw,28px);margin-bottom:10px}
.cta-soft p{margin:0;color:var(--c-ink-2);font-size:15.5px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ================= 页脚 ================= */
.site-footer{
  position:relative;
  margin-top:0;
  padding:64px 0 0;
  background-image:var(--grad-deep);
  color:rgba(255,255,255,.78);
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:0;
  height:2px;
  background-image:var(--grad-brand);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;color:rgba(255,255,255,.72);line-height:1.75}
.footer-brand .footer-note{font-size:13px;color:rgba(255,255,255,.5)}
.footer-col h3{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px}
.footer-col a:hover{color:#fff}
.footer-col > p{font-size:13.5px;color:rgba(255,255,255,.62);margin-bottom:12px}
.sub-form{display:flex;gap:10px;flex-wrap:wrap}
.sub-form input{
  flex:1 1 150px;
  min-width:0;
  height:48px;
  padding:0 14px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.22);
  background:#fff;
  color:var(--c-ink);
  font-size:14px;
  font-family:inherit;
}
.sub-form input::placeholder{color:var(--c-muted)}
.sub-form input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(255,90,43,.2)}
.form-note{display:block;margin-top:10px;font-size:13px;min-height:18px}
.form-note.is-ok{color:#7BE0C8}
.form-note.is-error{color:#FFB4A0}
.footer-bottom{
  margin-top:48px;
  padding:20px 0;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.55);
}
.footer-bottom p{margin:0}

/* ================= 响应式：1024 ================= */
@media screen and (max-width:1024px){
  .section{padding:72px 0}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:32px}
  .split-media img{height:300px}
  .split-media .float-badge{right:12px;bottom:-16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}

/* ================= 响应式：900（导航折叠） ================= */
@media screen and (max-width:900px){
  .nav-side{display:none}
  .nav-wrap{justify-content:space-between;height:64px}
  .nav-toggle{display:flex}
  .brand{position:absolute;left:50%;transform:translateX(-50%)}
  .site-header .nav-wrap{position:relative}
  .site-header.is-scrolled .nav-wrap{height:64px}
  .brand-text{font-size:16px}
  .hero-sub{min-height:220px}
}

@media screen and (min-width:901px){
  .nav-drawer{display:none}
}

/* ================= 响应式：768 ================= */
@media screen and (max-width:768px){
  .container{padding:0 16px}
  .container > .row{margin-left:-10px;margin-right:-10px}
  .column,.columns{padding-left:10px;padding-right:10px}
  .section{padding:56px 0}
  .section-head{margin-bottom:26px}
  .metric-grid{grid-template-columns:1fr;gap:18px}
  .compare-grid{grid-template-columns:1fr}
  .timeline::before{left:17px}
  .tl-item{padding-left:60px;padding-bottom:26px}
  .tl-num{width:36px;height:36px;font-size:14px;border-width:3px}
  .tl-body{padding:20px}
  .tl-body h3{font-size:17.5px}
  .cta-soft{padding:32px 24px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 150px}
  .def-row{flex-direction:column;gap:4px}
  .def-row dd{text-align:left}
}

/* ================= 响应式：520 ================= */
@media screen and (max-width:520px){
  body{font-size:15.5px;line-height:1.8}
  .hero-sub{min-height:200px}
  .hero-sub-inner{padding:32px 0}
  .hero-sub p{font-size:15px}
  .hero-actions .btn{flex:1 1 100%}
  .brand-text{font-size:15px}
  .brand-mark{width:30px;height:30px;border-radius:10px}
  .brand-mark::before{inset:8px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .sub-form{width:100%}
  .sub-form .btn{flex:1 1 100%}
  .split-media img{height:220px}
  .split-media .float-badge{position:static;margin-top:14px;display:inline-flex}
}

/* roulang page: category4 */
:root{
  --c-primary:#FF5A2B;
  --c-primary-deep:#E23E12;
  --c-secondary:#12BFA0;
  --c-accent:#FFC53D;
  --c-ink:#14161B;
  --c-ink-2:#3A4150;
  --c-muted:#6B7280;
  --c-line:rgba(20,22,27,.08);
  --c-bg:#F7F5F2;
  --c-surface:#FFFFFF;
  --c-surface-2:#FFF3EC;
  --grad-brand:linear-gradient(118deg,#FF7A3D 0%,#FF4A6B 48%,#A93BFF 100%);
  --grad-deep:linear-gradient(160deg,#1B1D24 0%,#2A1E2B 100%);
  --grad-cool:linear-gradient(120deg,#12BFA0,#0E9BE0);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 6px 18px rgba(20,22,27,.06);
  --sh-2:0 14px 36px rgba(20,22,27,.10);
  --sh-brand:0 12px 28px rgba(255,90,43,.28);
  --sp-section:88px;
  --sp-gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","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-lg);object-fit:cover;background:var(--c-surface-2);}
a{color:var(--c-ink-2);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary);}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:-.01em;}
h1{font-size:clamp(30px,5vw,46px);line-height:1.2;letter-spacing:-.02em;}
h2{font-size:clamp(24px,3.4vw,32px);line-height:1.3;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.row{display:flex;flex-wrap:wrap;margin-left:-12px;margin-right:-12px;max-width:none;}
.row .column,.row .columns{padding-left:12px;padding-right:12px;}
.section{padding:var(--sp-section) 0;}
.section-tint{background:var(--c-surface-2);}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head h2{margin-bottom:12px;}
.section-head p{color:var(--c-ink-2);margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--c-primary);
  text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--grad-brand);border-radius:2px;}
.sr-only{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{background-image:var(--grad-brand);background-size:180% 180%;background-position:0% 50%;color:#fff;box-shadow:var(--sh-brand);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);background-position:100% 50%;box-shadow:0 18px 34px rgba(255,90,43,.34);}
.btn-ghost{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-surface-2);color:var(--c-primary-deep);transform:translateY(-2px);}
.btn-light{background:#fff;color:var(--c-ink);box-shadow:var(--sh-1);}
.btn-light:hover{color:var(--c-primary);transform:translateY(-2px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-2px);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn-link{background:none;border:0;padding:0;color:var(--c-primary);font-weight:600;min-height:auto;}
.btn-link:hover{color:var(--c-primary-deep);}
.btn:active{transform:translateY(0);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(247,245,242,.92);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:height .25s ease,background .25s ease,box-shadow .25s ease;
}
.site-header .nav-wrap{
  height:76px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  transition:height .25s ease;
}
.site-header.is-scrolled{background:#fff;box-shadow:var(--sh-1);}
.site-header.is-scrolled .nav-wrap{height:64px;}
.nav-side{display:flex;align-items:center;gap:22px;flex:1 1 0;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-link{
  position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 2px;line-height:1.4;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;width:0;
  background:var(--grad-brand);border-radius:2px;transition:width .25s ease;
}
.nav-link:hover::after,.nav-link.active::after{width:100%;}
.nav-link:hover,.nav-link.active{color:var(--c-primary);}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:32px;height:32px;border-radius:10px;background:var(--grad-brand);
  position:relative;flex:0 0 auto;box-shadow:0 6px 14px rgba(255,90,43,.28);
}
.brand-mark::after{
  content:"";position:absolute;inset:8px 7px;border-radius:3px;
  background:rgba(255,255,255,.92);
  clip-path:polygon(0 0,100% 0,60% 50%,100% 100%,0 100%,40% 50%);
}
.brand-text{font-size:19px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;white-space:nowrap;}
.site-header .brand-text{font-size:20px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--c-line);background:var(--c-surface);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .25s ease,opacity .25s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.drawer{
  position:fixed;left:0;right:0;top:0;z-index:999;
  background:#fff;padding:88px 0 22px;
  box-shadow:var(--sh-2);
  transform:translateY(-110%);
  transition:transform .3s ease;
  max-height:100vh;overflow:auto;
}
.drawer.is-open{transform:translateY(0);}
.drawer a{
  display:flex;align-items:center;min-height:48px;padding:0 24px;
  border-bottom:1px solid var(--c-line);font-size:16px;color:var(--c-ink-2);
}
.drawer a.active{color:var(--c-primary);font-weight:600;}
.drawer .drawer-cta{margin:18px 24px 0;}
body.no-scroll{overflow:hidden;}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:16px;}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:rgba(20,22,27,.25);}
.breadcrumb .current{color:var(--c-ink-2);}

/* ---------- 内页矮 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  min-height:260px;
  display:flex;align-items:center;
  background:var(--c-surface-2);
  border-bottom:2px solid transparent;
  border-image:var(--grad-brand) 1;
}
.page-hero::after{
  content:"";position:absolute;right:0;top:0;bottom:0;width:44%;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.16;pointer-events:none;
  border-radius:0;
}
.page-hero .container{position:relative;z-index:2;padding-top:36px;padding-bottom:36px;}
.page-hero h1{max-width:860px;margin-bottom:14px;}
.page-hero .hero-sub{max-width:720px;color:var(--c-ink-2);font-size:17px;margin:0;}
.page-hero .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-line);
  font-size:13px;font-weight:600;color:var(--c-ink-2);
  font-variant-numeric:tabular-nums;
}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--grad-cool);}
.badge-accent{background:var(--c-surface-2);border-color:rgba(255,90,43,.24);color:var(--c-primary-deep);}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  border:1px solid rgba(18,191,160,.4);
  color:#0E9E84;font-size:12.5px;font-weight:600;
  background:rgba(18,191,160,.06);
}
.stat-num{font-variant-numeric:tabular-nums;font-weight:700;}

/* ---------- 特点卡 ---------- */
.feature-card{
  position:relative;overflow:hidden;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:24px;
  height:100%;
  display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease;
}
.feature-card::after{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:var(--grad-brand);opacity:0;transition:opacity .25s ease;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.feature-card:hover::after{opacity:1;}
.feature-card img{width:100%;height:172px;margin-bottom:20px;}
.feature-card h3{margin-bottom:10px;}
.feature-card p{color:var(--c-ink-2);font-size:15px;margin:0 0 16px;}
.feature-card .card-foot{margin-top:auto;display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 权益明细 ---------- */
.split{display:flex;flex-wrap:wrap;align-items:center;margin-left:-12px;margin-right:-12px;}
.split-media,.split-body{padding-left:12px;padding-right:12px;}
.split-media img{width:100%;height:420px;}
.split-body h2{margin-bottom:14px;}
.split-body > p{color:var(--c-ink-2);margin-bottom:22px;}
.spec-list{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);}
.spec-row{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 20px;border-bottom:1px solid var(--c-line);
}
.spec-row:last-child{border-bottom:0;}
.spec-label{display:flex;align-items:center;gap:10px;color:var(--c-ink-2);font-size:15px;}
.spec-icon{
  width:26px;height:26px;border-radius:8px;background:var(--grad-cool);
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;font-size:12px;font-weight:700;flex:0 0 auto;
}
.spec-value{font-size:15px;font-weight:700;color:var(--c-ink);font-variant-numeric:tabular-nums;text-align:right;}
.spec-value em{font-style:normal;color:#0E9E84;}

/* ---------- 数据徽章带 ---------- */
.stat-band{
  display:flex;flex-wrap:wrap;gap:16px;margin-top:28px;
}
.stat-item{
  flex:1 1 150px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:18px 20px;box-shadow:var(--sh-1);
}
.stat-item .stat-num{display:block;font-size:26px;line-height:1.2;color:var(--c-ink);}
.stat-item .stat-cap{font-size:13px;color:var(--c-muted);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px;}
.faq-item{
  position:relative;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--grad-brand);opacity:0;transition:opacity .25s ease;
}
.faq-item[open]::before{opacity:1;}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:18px 56px 18px 22px;
  font-size:16px;font-weight:600;color:var(--c-ink);
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";position:absolute;right:22px;top:50%;
  width:14px;height:14px;margin-top:-7px;
  background:
    linear-gradient(var(--c-primary),var(--c-primary)) center/14px 2px no-repeat,
    linear-gradient(var(--c-primary),var(--c-primary)) center/2px 14px no-repeat;
  transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(135deg);}
.faq-item .faq-answer{padding:0 22px 20px;color:var(--c-ink-2);font-size:15px;}
.faq-item .faq-answer p:last-child{margin-bottom:0;}

/* ---------- CTA 带 ---------- */
.cta-band{position:relative;background-image:var(--grad-deep);padding:0;}
.cta-band::before,.cta-band::after{
  content:"";position:absolute;left:0;right:0;height:2px;background:var(--grad-brand);
}
.cta-band::before{top:0;}
.cta-band::after{bottom:0;}
.cta-inner{padding:64px 0;display:flex;flex-wrap:wrap;align-items:center;gap:32px;}
.cta-copy{flex:1 1 420px;color:#fff;}
.cta-copy h2{color:#fff;margin-bottom:12px;}
.cta-copy p{color:rgba(255,255,255,.72);font-size:15px;margin-bottom:22px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.qr-card{
  flex:0 0 auto;background:#fff;border-radius:var(--r-md);
  padding:16px;text-align:center;box-shadow:var(--sh-2);
}
.qr-code{
  width:132px;height:132px;border-radius:10px;margin:0 auto 10px;
  background-color:#fff;
  background-image:
    linear-gradient(90deg,rgba(20,22,27,.9) 50%,transparent 50%),
    linear-gradient(rgba(20,22,27,.9) 50%,transparent 50%);
  background-size:16px 16px;
  border:6px solid #fff;
  outline:1px solid var(--c-line);
}
.qr-card span{display:block;font-size:12.5px;color:var(--c-muted);}
.qr-card strong{display:block;font-size:14px;color:var(--c-ink);margin-bottom:2px;}

/* ---------- 页脚 ---------- */
.site-footer{background-image:var(--grad-deep);color:rgba(255,255,255,.72);padding-top:64px;position:relative;}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-brand);}
.footer-grid{display:flex;flex-wrap:wrap;gap:32px;padding-bottom:44px;}
.footer-brand{flex:1 1 280px;}
.footer-brand .brand-text{color:#fff;font-size:18px;}
.footer-brand p{font-size:14px;margin:16px 0 8px;max-width:320px;}
.footer-brand .footer-note{color:rgba(255,255,255,.5);font-size:13px;}
.footer-col{flex:1 1 180px;}
.footer-col h3{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:14px;margin-bottom:14px;}
.sub-form{display:flex;gap:10px;flex-wrap:wrap;}
.sub-form input{
  flex:1 1 150px;min-height:48px;padding:0 14px;
  border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.18);
  background:#fff;color:var(--c-ink);font-size:14px;
}
.sub-form input::placeholder{color:var(--c-muted);}
.sub-form input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(255,90,43,.18);}
.form-note{display:block;margin-top:10px;font-size:13px;color:var(--c-accent);min-height:18px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
}
.footer-bottom p{margin:0;font-size:13px;color:rgba(255,255,255,.55);}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  :root{--sp-section:72px;}
  .page-hero{min-height:230px;}
  .page-hero::after{width:34%;opacity:.12;}
  .split-media img{height:360px;}
  .split-media{margin-bottom:28px;}
  .split{flex-direction:column;}
  .split-media,.split-body{width:100%;}
}
@media screen and (max-width:900px){
  .nav-side{display:none;}
  .nav-toggle{display:flex;}
  .site-header .nav-wrap{justify-content:space-between;}
}
@media screen and (max-width:640px){
  :root{--sp-section:56px;--sp-gap:18px;}
  .container{padding:0 16px;}
  body{font-size:15.5px;line-height:1.8;}
  .page-hero{min-height:200px;}
  .page-hero::after{display:none;}
  .page-hero .container{padding-top:28px;padding-bottom:28px;}
  .page-hero .hero-sub{font-size:15.5px;}
  .site-header .brand-text{font-size:17px;}
  .site-header .nav-wrap{height:64px;}
  .site-header.is-scrolled .nav-wrap{height:58px;}
  .feature-card img{height:150px;}
  .split-media img{height:260px;}
  .spec-row{flex-direction:column;align-items:flex-start;gap:6px;}
  .spec-value{text-align:left;}
  .cta-inner{padding:48px 0;}
  .qr-card{margin:0 auto;}
  .footer-grid{gap:26px;}
}