/* roulang page: index */
:root{
  --brand-900:#14212E;
  --brand-800:#1E4166;
  --brand-700:#2B5C8A;
  --brand-200:#DCE8F3;
  --accent:#E4763A;
  --accent-dark:#D2662C;
  --accent-soft:#FBE7DB;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --surface-alt:#EEF3F9;
  --line:#E3E9F1;
  --line-strong:#DCE5EF;
  --text:#16202B;
  --text-2:#3D4C5C;
  --meta:#6B7A8C;
  --placeholder:#9AA9B8;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:24px;
  --pill:999px;
  --sh-1:0 2px 6px rgba(22,32,43,.05), 0 12px 28px -12px rgba(22,32,43,.10);
  --sh-2:0 6px 16px rgba(22,32,43,.08), 0 24px 48px -16px rgba(22,32,43,.16);
  --font:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Inter","Helvetica Neue",Arial,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:var(--brand-700);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--brand-800)}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:3px solid rgba(43,92,138,.25);
  outline-offset:2px;
  border-radius:8px;
}
::selection{background:var(--brand-200);color:var(--brand-800)}

/* ---------- 容器与板块 ---------- */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-alt{background:var(--surface-alt)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:36px;flex-wrap:wrap;
}
.section-head .head-text{max-width:640px}
.section-head h2{
  font-size:clamp(24px,2.7vw,32px);
  font-weight:700;line-height:1.28;letter-spacing:-.01em;color:var(--text);
}
.section-head h2 .dot{
  display:inline-block;width:8px;height:8px;border-radius:50%;
  background:var(--accent);vertical-align:middle;margin-right:10px;
}
.section-head p{
  margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--meta);max-width:560px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand-700);margin-bottom:14px;
}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--brand-700);border-radius:2px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn svg{width:14px;height:14px;flex:none;transition:transform .18s var(--ease)}
.btn-primary{background:var(--brand-800);color:#fff;box-shadow:0 2px 6px rgba(30,65,102,.18)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px -10px rgba(30,65,102,.55)}
.btn-primary:active{transform:translateY(0);background:var(--brand-900)}
.btn-ghost{background:var(--surface);color:var(--brand-800);border-color:var(--line-strong)}
.btn-ghost:hover{background:var(--surface-alt);border-color:var(--brand-700);color:var(--brand-800);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 18px -8px rgba(228,118,58,.7)}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px)}
.btn-accent:active{transform:translateY(0)}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;min-height:44px;
  font-size:15px;font-weight:600;color:var(--brand-700);background:none;padding:0;
}
.btn-link svg{width:14px;height:14px;transition:transform .2s var(--ease)}
.btn-link:hover{color:var(--brand-800)}
.btn-link:hover svg{transform:translateX(4px)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 10px 26px -20px rgba(22,32,43,.6)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;height:76px}
.brand{
  display:inline-flex;align-items:center;gap:9px;
  font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--text);
}
.brand:hover{color:var(--text)}
.brand .brand-dot{
  width:7px;height:7px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px rgba(228,118,58,.12);flex:none;
}
.brand em{font-style:normal;color:var(--brand-700)}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links li{list-style:none}
.nav-links a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:500;color:var(--text-2);
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:-6px;height:2px;width:0;
  background:var(--brand-800);border-radius:2px;transition:width .22s var(--ease);
}
.nav-links a:hover{color:var(--brand-800)}
.nav-links a:hover::after{width:100%}
.nav-links a.is-active{color:var(--brand-800);font-weight:600}
.nav-links a.is-active::after{width:100%}
.nav-links a.is-active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--accent);
}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-cta{min-height:40px;padding:0 18px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  align-items:center;justify-content:center;border:1px solid var(--line-strong);
  background:var(--surface);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-800);border-radius:2px;position:relative}
.nav-toggle span::before{
  content:"";position:absolute;left:0;top:6px;width:18px;height:2px;background:var(--brand-800);border-radius:2px;
}
.nav-toggle span::after{
  content:"";position:absolute;left:0;top:-6px;width:18px;height:2px;background:var(--brand-800);border-radius:2px;
}
.drawer{
  position:fixed;inset:0;z-index:120;background:var(--surface);
  display:flex;flex-direction:column;padding:20px;
  transform:translateY(-100%);opacity:0;pointer-events:none;
  transition:transform .3s var(--ease),opacity .25s var(--ease);
}
.drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:56px;margin-bottom:8px}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;background:var(--surface);
}
.drawer-close svg{width:16px;height:16px;stroke:var(--brand-800)}
.drawer nav{flex:1;overflow-y:auto}
.drawer nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:18px;font-weight:500;color:var(--brand-800);
  border-bottom:1px solid var(--line);
}
.drawer nav a svg{width:13px;height:13px;stroke:var(--meta)}
.drawer-foot{
  border-top:1px solid var(--line);padding-top:16px;
  font-size:13.5px;color:var(--meta);line-height:1.9;
}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:72px 0 56px;
  background:
    radial-gradient(1000px 520px at 82% -12%,rgba(220,232,243,.9),rgba(247,249,252,0) 62%),
    var(--bg);
}
.hero::after{
  content:"";position:absolute;left:-8%;top:20%;width:70%;height:280px;
  background:linear-gradient(100deg,rgba(220,232,243,.55),rgba(220,232,243,0));
  transform:rotate(-7deg);border-radius:40px;pointer-events:none;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.86fr);
  gap:56px;align-items:center;
}
.hero-copy h1{
  font-size:clamp(32px,4.4vw,54px);
  font-weight:700;line-height:1.15;letter-spacing:-.01em;color:var(--text);
  margin-bottom:20px;
}
.hero-copy h1 .hl{color:var(--brand-700)}
.hero-sub{
  font-size:16.5px;line-height:1.95;color:var(--text-2);max-width:520px;
}
.hero-actions{display:flex;align-items:center;gap:18px;margin-top:30px;flex-wrap:wrap}
.hero-metrics{
  display:flex;align-items:center;gap:26px;margin-top:40px;flex-wrap:wrap;
}
.hero-metrics .metric{display:flex;flex-direction:column;gap:2px;position:relative;padding-right:26px}
.hero-metrics .metric + .metric{border-left:1px solid var(--line);padding-left:26px}
.hero-metrics .metric + .metric:last-child{padding-right:0}
.hero-metrics b{font-size:20px;font-weight:700;color:var(--brand-800);line-height:1.3;letter-spacing:-.01em}
.hero-metrics span{font-size:13px;color:var(--meta);line-height:1.6}
.hero-visual{position:relative;height:480px}
.hero-poster{
  position:absolute;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-1);border:1px solid rgba(255,255,255,.9);
}
.hero-poster img{width:100%;height:100%;object-fit:cover;border-radius:var(--r-lg)}
.hero-poster.poster-main{
  right:0;top:0;width:78%;height:86%;
  box-shadow:0 18px 44px -22px rgba(22,32,43,.45);
}
.hero-poster.poster-sub{
  left:0;bottom:0;width:47%;height:52%;
  box-shadow:0 16px 36px -18px rgba(22,32,43,.4);
  border:4px solid var(--surface);
}
.hero-badge{
  position:absolute;left:8%;top:12%;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--pill);padding:8px 14px;
  font-size:12.5px;font-weight:600;color:var(--brand-800);
  box-shadow:var(--sh-1);
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block}

/* ---------- 横滑片库轨道 ---------- */
.rail-section{padding:8px 0 96px}
.rail-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:26px;flex-wrap:wrap;
}
.rail-head h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;letter-spacing:-.01em;line-height:1.3}
.rail-head p{font-size:14px;color:var(--meta);margin-top:8px;max-width:520px;line-height:1.75}
.rail-nav{display:flex;gap:10px;flex:none}
.rail-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line-strong);
  background:var(--surface);display:flex;align-items:center;justify-content:center;
  transition:background .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.rail-btn svg{width:14px;height:14px;stroke:var(--brand-800);transition:stroke .18s var(--ease)}
.rail-btn:hover{background:var(--brand-800);border-color:var(--brand-800);transform:translateY(-1px)}
.rail-btn:hover svg{stroke:#fff}
.rail-btn[disabled]{opacity:.4;pointer-events:none}
.rail-outer{overflow:hidden}
.rail-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 32px 20px;margin:0 -32px;
  scrollbar-width:thin;scrollbar-color:var(--line-strong) transparent;
}
.rail-track::-webkit-scrollbar{height:6px}
.rail-track::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:99px}
.rail-track::-webkit-scrollbar-track{background:transparent}
.rail-card{
  flex:0 0 260px;scroll-snap-align:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.rail-cover{position:relative;aspect-ratio:3/4;overflow:hidden;background:var(--surface-alt)}
.rail-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.rail-card:hover .rail-cover img{transform:scale(1.04)}
.rail-cover .tag{
  position:absolute;right:10px;top:10px;
  background:rgba(30,65,102,.92);color:#fff;
  font-size:12px;font-weight:500;padding:0 10px;height:24px;line-height:24px;
  border-radius:var(--pill);
}
.rail-body{padding:16px 18px 20px}
.rail-body h3{
  font-size:17px;font-weight:600;line-height:1.4;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  min-height:48px;
}
.rail-card:hover .rail-body h3{color:var(--brand-700)}
.rail-meta{margin-top:10px;font-size:12.5px;color:var(--meta);display:flex;align-items:center;gap:8px}
.rail-meta i{width:3px;height:3px;border-radius:50%;background:var(--meta);display:block}

/* ---------- 推荐非对称栅格 ---------- */
.pick-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
.pick-main{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.pick-main:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.pick-main .pick-cover{aspect-ratio:16/9;overflow:hidden;background:var(--surface-alt)}
.pick-main .pick-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.pick-main:hover .pick-cover img{transform:scale(1.03)}
.pick-main .pick-body{padding:26px 28px 28px}
.pick-main h3{font-size:23px;font-weight:700;line-height:1.35;color:var(--text);letter-spacing:-.01em}
.pick-main p{margin-top:12px;font-size:14.5px;line-height:1.85;color:var(--text-2)}
.pick-main .btn-link{margin-top:18px}
.pick-side{display:flex;flex-direction:column;gap:24px}
.pick-strip{
  display:flex;gap:18px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:16px;box-shadow:var(--sh-1);flex:1;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.pick-strip:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.pick-strip .strip-img{
  flex:0 0 120px;aspect-ratio:1/1;border-radius:12px;overflow:hidden;background:var(--surface-alt);
}
.pick-strip .strip-img img{width:100%;height:100%;object-fit:cover}
.pick-strip .strip-body{min-width:0;display:flex;flex-direction:column;justify-content:center}
.pill{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--pill);
  font-size:12px;font-weight:500;background:var(--brand-200);color:var(--brand-800);
  width:max-content;
}
.pill-accent{background:var(--accent-soft);color:var(--accent-dark)}
.pick-strip h3{
  margin-top:10px;font-size:17px;font-weight:600;line-height:1.4;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.pick-strip:hover h3{color:var(--brand-700)}
.pick-strip p{
  margin-top:8px;font-size:13.5px;line-height:1.75;color:var(--meta);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}

/* ---------- 片单分类网格 ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.chip{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:var(--pill);
  font-size:14px;font-weight:500;color:var(--text-2);background:var(--surface);
  border:1px solid var(--line-strong);
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.chip:hover{background:var(--brand-200);border-color:var(--brand-200);color:var(--brand-800)}
.chip.is-on{background:var(--brand-800);border-color:var(--brand-800);color:#fff}
.chip.is-on:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff}
.shelf-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.shelf-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.shelf-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.shelf-cover{position:relative;aspect-ratio:3/4;overflow:hidden;background:var(--surface-alt)}
.shelf-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.shelf-card:hover .shelf-cover img{transform:scale(1.04)}
.shelf-cover .tag{
  position:absolute;left:10px;top:10px;height:24px;line-height:24px;padding:0 10px;
  border-radius:var(--pill);background:rgba(30,65,102,.92);color:#fff;font-size:12px;font-weight:500;
}
.shelf-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}
.shelf-body h3{font-size:18px;font-weight:600;line-height:1.4;color:var(--text)}
.shelf-card:hover .shelf-body h3{color:var(--brand-700)}
.shelf-body p{
  margin-top:8px;font-size:13.5px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.shelf-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--meta);
}
.shelf-foot .go{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand-700);font-size:13.5px}
.shelf-foot .go svg{width:12px;height:12px;transition:transform .18s var(--ease)}
.shelf-card:hover .shelf-foot .go svg{transform:translateX(3px)}

/* ---------- 最新信息（CMS 区域） ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.news-head h2{font-size:clamp(24px,2.7vw,32px);font-weight:700;letter-spacing:-.01em;line-height:1.28}
.news-head p{margin-top:10px;font-size:14.5px;color:var(--meta);max-width:560px;line-height:1.8}
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.news-cover{aspect-ratio:16/9;overflow:hidden;background:var(--surface-alt)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-body h3{
  margin-top:12px;font-size:18px;font-weight:600;line-height:1.45;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover .news-body h3{color:var(--brand-700)}
.news-body .sum{
  margin-top:10px;font-size:14px;line-height:1.8;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;gap:8px;
  font-size:12.5px;color:var(--meta);border-top:1px solid var(--line);
}
.news-meta i{width:3px;height:3px;border-radius:50%;background:var(--meta);display:block}
.empty-state{
  grid-column:1/-1;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:16px;text-align:center;padding:64px 24px;
  background:var(--surface);border:1px dashed var(--line-strong);
  border-radius:var(--r-lg);
}
.empty-state svg{width:48px;height:48px;stroke:var(--brand-700);opacity:.55}
.empty-state p{font-size:16px;color:var(--text-2)}

/* ---------- 数据信任条 ---------- */
.stats-band{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
}
.stat-item{padding:34px 28px;border-right:1px solid var(--line)}
.stat-item:last-child{border-right:0}
.stat-item b{
  display:block;font-size:32px;font-weight:700;line-height:1.2;letter-spacing:-.02em;
  color:var(--brand-800);font-variant-numeric:tabular-nums;
}
.stat-item span{display:block;margin-top:8px;font-size:13.5px;color:var(--meta);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-side h2{font-size:clamp(24px,2.7vw,32px);font-weight:700;line-height:1.28;letter-spacing:-.01em}
.faq-side p{margin-top:14px;font-size:14.5px;line-height:1.85;color:var(--meta);max-width:340px}
.faq-side .btn-link{margin-top:20px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  transition:background .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.faq-item:hover{background:var(--bg);border-color:var(--line-strong)}
.faq-item.is-open{background:var(--surface);border-color:var(--line-strong);box-shadow:var(--sh-1)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  width:100%;text-align:left;padding:20px;font-size:16px;font-weight:600;color:var(--text);
  line-height:1.6;
}
.faq-q .ico{
  flex:none;width:22px;height:22px;position:relative;border-radius:50%;
  border:1px solid var(--line-strong);
}
.faq-q .ico::before,.faq-q .ico::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-700);
  transform:translate(-50%,-50%);border-radius:2px;transition:transform .22s var(--ease),background .22s var(--ease);
}
.faq-q .ico::before{width:10px;height:1.6px}
.faq-q .ico::after{width:1.6px;height:10px}
.faq-item.is-open .faq-q .ico{border-color:var(--brand-700)}
.faq-item.is-open .faq-q .ico::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .24s var(--ease);
}
.faq-a p{
  padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:760px;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--brand-800);border-radius:var(--r-xl);
  padding:64px;color:#fff;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.72fr);
  gap:48px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;right:-90px;top:-120px;width:360px;height:360px;
  border-radius:50%;border:1px solid rgba(255,255,255,.14);
}
.cta-band::after{
  content:"";position:absolute;right:-30px;bottom:-160px;width:300px;height:300px;
  border-radius:50%;border:1px solid rgba(255,255,255,.1);
}
.cta-copy{position:relative;z-index:1}
.cta-copy h2{font-size:clamp(22px,2.5vw,28px);font-weight:700;line-height:1.35;letter-spacing:-.01em}
.cta-copy p{margin-top:14px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.78);max-width:460px}
.cta-form{position:relative;z-index:1}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:500;color:rgba(255,255,255,.82);margin-bottom:8px}
.field input{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.96);
  font-size:14.5px;color:var(--text);transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field input::placeholder{color:var(--placeholder)}
.field input:focus{
  outline:none;border-color:var(--brand-200);
  box-shadow:0 0 0 3px rgba(220,232,243,.35);
}
.cta-form .btn-accent{width:100%}
.form-note{margin-top:12px;font-size:12.5px;color:rgba(255,255,255,.6);line-height:1.7}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:#B9C6D4;padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr 1.4fr;gap:40px}
.footer-brand .brand{color:#fff;font-size:18px;margin-bottom:16px}
.footer-brand .brand em{color:#fff}
.footer-brand p{font-size:13.5px;line-height:1.85;color:#8FA1B4;max-width:250px}
.socials{display:flex;gap:12px;margin-top:20px}
.socials a{
  width:36px;height:36px;border-radius:50%;border:1px solid rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:center;
  transition:background .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.socials a svg{width:15px;height:15px;stroke:#B9C6D4;transition:stroke .18s var(--ease)}
.socials a:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.3);transform:translateY(-2px)}
.socials a:hover svg{stroke:#fff}
.footer-col h4{
  font-size:13px;font-weight:600;letter-spacing:.1em;color:#fff;
  text-transform:uppercase;margin-bottom:18px;
}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a,.footer-col p{
  font-size:14px;line-height:1.8;color:#B9C6D4;display:inline-block;
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-col ul a:hover{color:#fff;transform:translateX(2px)}
.footer-col p{color:#8FA1B4;font-size:13.5px;margin-bottom:8px}
.footer-sub input{
  width:100%;height:44px;padding:0 14px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);
  color:#fff;font-size:14px;
}
.footer-sub input::placeholder{color:#7E90A3}
.footer-sub input:focus{outline:none;border-color:rgba(255,255,255,.45);box-shadow:0 0 0 3px rgba(255,255,255,.1)}
.footer-sub button{
  margin-top:12px;width:100%;min-height:44px;border-radius:var(--r-sm);
  background:var(--accent);color:#fff;font-size:14px;font-weight:600;
  transition:background .18s var(--ease);
}
.footer-sub button:hover{background:var(--accent-dark)}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.08);
  padding:24px 0 28px;display:flex;align-items:center;justify-content:space-between;
  gap:20px;flex-wrap:wrap;font-size:13px;color:#7E90A3;
}
.footer-bottom a{color:#B9C6D4}
.footer-bottom a:hover{color:#fff}
.footer-bottom .links{display:flex;gap:20px;flex-wrap:wrap}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero-visual{height:440px}
}
@media (max-width:991px){
  .wrap{padding:0 24px}
  .section{padding:72px 0}
  .rail-section{padding:8px 0 72px}
  .nav-links{gap:22px}
  .hero{padding:56px 0 40px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{height:400px;max-width:560px}
  .hero-copy h1{max-width:640px}
  .pick-grid{grid-template-columns:1fr}
  .shelf-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats-band{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-item:nth-child(2){border-right:0}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line)}
  .faq-grid{grid-template-columns:1fr;gap:32px}
  .faq-side p{max-width:100%}
  .cta-band{grid-template-columns:1fr;padding:48px 36px;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .rail-track{padding:6px 24px 20px;margin:0 -24px}
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
}
@media (max-width:767px){
  .shelf-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .news-grid{grid-template-columns:1fr}
  .rail-card{flex-basis:220px}
  .pick-strip .strip-img{flex-basis:104px}
}
@media (max-width:575px){
  .wrap{padding:0 20px}
  .section{padding:56px 0}
  .rail-section{padding:8px 0 56px}
  .nav-inner{height:68px}
  .hero{padding:44px 0 32px}
  .hero-visual{height:330px}
  .hero-copy h1{font-size:clamp(28px,8vw,34px)}
  .hero-sub{font-size:15.5px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .hero-metrics{gap:18px;margin-top:30px}
  .hero-metrics .metric{padding-right:18px}
  .hero-metrics .metric + .metric{padding-left:18px}
  .shelf-grid{grid-template-columns:1fr}
  .stats-band{grid-template-columns:1fr}
  .stat-item{border-right:0;border-bottom:1px solid var(--line)}
  .stat-item:last-child{border-bottom:0}
  .cta-band{padding:36px 22px;border-radius:18px}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding:56px 0 0;margin-top:56px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .rail-track{padding:6px 20px 20px;margin:0 -20px}
  .rail-card{flex-basis:200px}
  .pick-main .pick-body{padding:20px}
  .pick-strip{flex-direction:column}
  .pick-strip .strip-img{flex-basis:auto;width:100%;aspect-ratio:16/9}
  .section-head{margin-bottom:26px}
}

/* roulang page: category1 */
:root{
  --brand:#2B5C8A;
  --brand-dark:#1E4166;
  --brand-light:#DCE8F3;
  --accent:#E4763A;
  --accent-dark:#D2662C;
  --accent-soft:#FBE7DB;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --surface-2:#EEF3F9;
  --line:#E3E9F1;
  --line-soft:#DCE5EF;
  --ink:#16202B;
  --ink-2:#3D4C5C;
  --muted:#6B7A8C;
  --placeholder:#9AA9B8;
  --danger:#C0392B;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-1:0 2px 6px rgba(22,32,43,.05),0 12px 28px -12px rgba(22,32,43,.10);
  --shadow-2:0 6px 16px rgba(22,32,43,.08),0 24px 48px -16px rgba(22,32,43,.16);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Inter",Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
input{font:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:3px solid rgba(43,92,138,.25);
  outline-offset:2px;
  border-radius:6px;
}
.wrap{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(10px);
  -webkit-backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .24s ease,box-shadow .24s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 8px 24px -18px rgba(22,32,43,.35);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:36px;
  height:76px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--ink);
  white-space:nowrap;
}
.brand em{font-style:normal;color:var(--brand);}
.brand-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  flex:0 0 auto;
}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  transition:color .2s ease;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;bottom:-1px;
  width:0;height:2px;
  background:var(--brand);
  transition:width .2s ease;
}
.nav-links a::before{
  content:"";
  position:absolute;
  left:-12px;top:50%;
  width:5px;height:5px;
  margin-top:-2.5px;
  border-radius:50%;
  background:var(--accent);
  opacity:0;
  transition:opacity .2s ease;
}
.nav-links a:hover{color:var(--brand-dark);}
.nav-links a:hover::after{width:100%;}
.nav-links a.is-active{color:var(--brand-dark);}
.nav-links a.is-active::after{width:100%;}
.nav-links a.is-active::before{opacity:1;}
.header-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:14px;
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line-soft);
  border-radius:var(--r-sm);
  background:#fff;
  cursor:pointer;
  padding:0;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--brand-dark);
  border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle:hover{border-color:var(--brand);background:var(--surface-2);}
/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--brand-dark);color:#fff;}
.btn-primary:hover{background:var(--brand);transform:translateY(-1px);box-shadow:0 10px 22px -12px rgba(30,65,102,.75);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;border-color:var(--line-soft);color:var(--brand-dark);}
.btn-ghost:hover{border-color:var(--brand);background:var(--surface-2);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 12px 24px -14px rgba(212,102,44,.9);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-dark);
  transition:color .2s ease,gap .2s ease;
}
.btn-link .arrow{transition:transform .2s ease;}
.btn-link:hover{color:var(--brand);}
.btn-link:hover .arrow{transform:translateX(4px);}
/* ---------- drawer ---------- */
.drawer{
  display:none;
  position:fixed;
  inset:0;
  z-index:120;
  background:#fff;
  flex-direction:column;
  padding:20px 24px 32px;
  overflow-y:auto;
}
.drawer.is-open{display:flex;}
.drawer-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:20px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  width:44px;height:44px;
  border:1px solid var(--line-soft);
  background:#fff;
  border-radius:var(--r-sm);
  font-size:22px;
  line-height:1;
  cursor:pointer;
  color:var(--brand-dark);
}
.drawer-links{margin-top:12px;}
.drawer-links li{border-bottom:1px solid var(--line);}
.drawer-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:56px;
  font-size:18px;
  font-weight:500;
  color:var(--brand-dark);
}
.drawer-links a.is-active{color:var(--accent-dark);}
.drawer-links a span{font-size:13px;color:var(--muted);}
.drawer-foot{
  margin-top:28px;
  font-size:14px;
  color:var(--muted);
  line-height:1.9;
}
/* ---------- page head ---------- */
.page-head{
  padding:40px 0 72px;
  position:relative;
  overflow:hidden;
}
.page-head::before{
  content:"";
  position:absolute;
  right:-140px;top:-160px;
  width:520px;height:520px;
  border-radius:50%;
  background:var(--brand-light);
  opacity:.55;
  z-index:0;
}
.page-head .wrap{position:relative;z-index:1;}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--muted);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#B7C4D2;}
.breadcrumb .current{color:var(--ink);font-weight:600;}
.page-head-grid{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:56px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:26px;
  padding:0 14px;
  border-radius:var(--r-pill);
  background:var(--brand-light);
  color:var(--brand-dark);
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
  margin-bottom:20px;
}
.page-head h1{
  font-size:clamp(30px,3.6vw,42px);
  line-height:1.18;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
}
.page-head .lead{
  margin-top:20px;
  max-width:560px;
  font-size:16px;
  line-height:1.9;
  color:var(--ink-2);
}
.head-stats{
  margin-top:32px;
  display:flex;
  flex-wrap:wrap;
  gap:28px;
}
.head-stats div{
  padding-left:18px;
  border-left:1px solid var(--line-soft);
}
.head-stats strong{
  display:block;
  font-size:20px;
  font-weight:700;
  color:var(--brand-dark);
  line-height:1.4;
}
.head-stats span{font-size:13px;color:var(--muted);}
.page-head-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  border:1px solid var(--line);
  aspect-ratio:4/3;
  background:var(--surface-2);
}
.page-head-media img{
  width:100%;height:100%;
  object-fit:cover;
}
/* ---------- generic section ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:40px;
}
.section-head h2{
  font-size:clamp(24px,2.4vw,32px);
  font-weight:700;
  line-height:1.28;
  letter-spacing:-.01em;
  color:var(--ink);
}
.section-head p{
  margin-top:10px;
  max-width:540px;
  font-size:14px;
  line-height:1.8;
  color:var(--muted);
}
.tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:var(--r-pill);
  background:var(--brand-dark);
  color:#fff;
  font-size:12px;
  font-weight:500;
  letter-spacing:.02em;
}
.tag-soft{background:var(--accent-soft);color:#A8501C;}
.tag-line{background:#fff;border:1px solid var(--line-soft);color:var(--ink-2);}
/* ---------- featured notice ---------- */
.feature{
  display:grid;
  grid-template-columns:1.15fr 1fr;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  margin-bottom:64px;
}
.feature-media{
  position:relative;
  aspect-ratio:16/9;
  background:var(--surface-2);
  overflow:hidden;
}
.feature-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.feature:hover .feature-media img{transform:scale(1.03);}
.feature-media .tag{
  position:absolute;
  top:18px;left:18px;
  height:26px;
  background:var(--accent);
}
.feature-body{
  padding:44px;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.feature-body .meta{
  font-size:13px;
  color:var(--muted);
  letter-spacing:.02em;
  margin-bottom:14px;
}
.feature-body h2{
  font-size:clamp(22px,2.2vw,28px);
  line-height:1.3;
  font-weight:700;
  color:var(--ink);
  letter-spacing:-.01em;
}
.feature-body p{
  margin-top:16px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
}
.feature-body .actions{
  margin-top:28px;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
/* ---------- notice list ---------- */
.notice-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0 56px;
}
.notice-item{
  display:flex;
  gap:22px;
  padding:26px 0;
  border-bottom:1px solid var(--line);
  transition:transform .18s ease;
}
.notice-item:hover{transform:translateX(4px);}
.date-badge{
  flex:0 0 68px;
  text-align:center;
  padding:10px 0;
  border-radius:var(--r-sm);
  background:var(--surface-2);
  border:1px solid var(--line);
  align-self:flex-start;
  transition:background .2s ease,border-color .2s ease;
}
.notice-item:hover .date-badge{
  background:var(--brand-dark);
  border-color:var(--brand-dark);
}
.date-badge strong{
  display:block;
  font-size:22px;
  font-weight:700;
  line-height:1.1;
  color:var(--brand-dark);
  transition:color .2s ease;
}
.date-badge span{
  display:block;
  font-size:12px;
  color:var(--muted);
  margin-top:4px;
  transition:color .2s ease;
}
.notice-item:hover .date-badge strong,
.notice-item:hover .date-badge span{color:#fff;}
.notice-main h3{
  font-size:18px;
  font-weight:600;
  line-height:1.4;
  color:var(--ink);
  transition:color .2s ease;
}
.notice-item:hover .notice-main h3{color:var(--brand-dark);}
.notice-main p{
  margin-top:8px;
  font-size:14px;
  line-height:1.8;
  color:var(--muted);
}
.notice-main .link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:12px;
  font-size:13px;
  font-weight:600;
  color:var(--brand);
}
.notice-main .link .arrow{transition:transform .2s ease;}
.notice-item:hover .link .arrow{transform:translateX(4px);}
/* ---------- type rows ---------- */
.type-band{
  background:var(--surface-2);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.type-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:48px;
}
.type-col h3{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:600;
  color:var(--ink);
  padding-bottom:16px;
  border-bottom:2px solid var(--brand-dark);
}
.type-col h3 i{
  width:8px;height:8px;
  border-radius:50%;
  background:var(--accent);
  font-style:normal;
  flex:0 0 auto;
}
.type-col p{
  margin-top:16px;
  font-size:14px;
  line-height:1.85;
  color:var(--ink-2);
}
.type-col ul{margin-top:14px;}
.type-col li{
  position:relative;
  padding-left:16px;
  font-size:14px;
  line-height:1.9;
  color:var(--muted);
}
.type-col li::before{
  content:"";
  position:absolute;
  left:0;top:13px;
  width:5px;height:5px;
  border-radius:50%;
  background:var(--line-soft);
}
/* ---------- steps ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.step{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:30px 26px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.step:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-2);
  border-color:var(--brand-light);
}
.step-num{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.18em;
  color:var(--brand);
  margin-bottom:14px;
}
.step h3{
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  line-height:1.4;
}
.step p{
  margin-top:10px;
  font-size:14px;
  line-height:1.8;
  color:var(--muted);
}
/* ---------- split subscribe ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:56px;
  box-shadow:var(--shadow-1);
}
.split h2{
  font-size:clamp(22px,2.2vw,28px);
  font-weight:700;
  line-height:1.32;
  color:var(--ink);
  letter-spacing:-.01em;
}
.split p{
  margin-top:16px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
}
.sub-form{margin-top:26px;}
.field{margin-bottom:16px;}
.field label{
  display:block;
  font-size:13px;
  font-weight:500;
  color:var(--ink-2);
  margin-bottom:8px;
}
.field input{
  width:100%;
  height:48px;
  padding:0 16px;
  border-radius:var(--r-sm);
  border:1px solid var(--line-soft);
  background:#fff;
  color:var(--ink);
  font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:var(--placeholder);}
.field input:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(43,92,138,.15);
}
.sub-form .btn{width:100%;}
.form-note{
  margin-top:12px;
  font-size:13px;
  color:var(--muted);
  line-height:1.7;
}
.split-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  aspect-ratio:4/3;
  background:var(--surface-2);
  box-shadow:var(--shadow-1);
}
.split-media img{width:100%;height:100%;object-fit:cover;}
/* ---------- faq ---------- */
.faq{max-width:920px;margin:0 auto;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:12px;
  margin-bottom:12px;
  overflow:hidden;
  transition:background .2s ease,border-color .2s ease;
}
.faq-item:hover{background:#F9FBFD;border-color:var(--line-soft);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  font-size:20px;
  font-weight:400;
  line-height:1;
  color:var(--brand);
  flex:0 0 auto;
  transition:color .2s ease;
}
.faq-item[open] summary{color:var(--brand-dark);}
.faq-item[open] summary::after{content:"−";color:var(--brand-dark);}
.faq-body{
  padding:0 22px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
}
/* ---------- cta band ---------- */
.cta-section{padding:0 0 96px;}
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--brand-dark);
  border-radius:var(--r-lg);
  padding:64px;
  display:grid;
  grid-template-columns:1.3fr .7fr;
  gap:40px;
  align-items:center;
  color:#fff;
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-90px;top:-110px;
  width:400px;height:400px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.12);
  opacity:.7;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-30px;bottom:-160px;
  width:320px;height:320px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.09);
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{
  font-size:clamp(22px,2.4vw,28px);
  font-weight:700;
  line-height:1.34;
  letter-spacing:-.01em;
}
.cta-band p{
  margin-top:14px;
  font-size:15px;
  line-height:1.85;
  color:rgba(255,255,255,.78);
  max-width:560px;
}
.cta-actions{
  display:flex;
  flex-direction:column;
  gap:14px;
  align-items:stretch;
}
.cta-actions .btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.28);
  color:#fff;
}
.cta-actions .btn-ghost:hover{
  background:rgba(255,255,255,.10);
  border-color:rgba(255,255,255,.6);
}
/* ---------- footer ---------- */
.site-footer{
  background:#14212E;
  color:#B9C6D4;
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr 1.4fr;
  gap:32px;
  padding-bottom:48px;
}
.site-footer .brand{color:#fff;}
.site-footer .brand em{color:#E8EEF6;}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  line-height:1.85;
  color:#93A4B5;
  max-width:280px;
}
.socials{
  display:flex;
  gap:12px;
  margin-top:20px;
}
.socials a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.14);
  transition:background .2s ease,border-color .2s ease;
}
.socials a:hover{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.32);}
.socials svg{
  width:17px;height:17px;
  stroke:#B9C6D4;
  fill:none;
  stroke-width:1.8;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.footer-col h4{
  font-size:13px;
  font-weight:600;
  letter-spacing:.12em;
  color:#fff;
  margin-bottom:16px;
}
.footer-col ul li{margin-bottom:6px;}
.footer-col a,.footer-col p{
  font-size:14px;
  line-height:1.9;
  color:#B9C6D4;
  transition:color .2s ease,padding-left .2s ease;
}
.footer-col a:hover{color:#fff;padding-left:2px;}
.footer-sub form{display:flex;flex-direction:column;gap:10px;}
.footer-sub input{
  width:100%;
  height:44px;
  padding:0 14px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);
  color:#fff;
  font-size:14px;
  transition:border-color .2s ease,background .2s ease;
}
.footer-sub input::placeholder{color:#8496A8;}
.footer-sub input:focus{
  outline:none;
  border-color:var(--brand);
  background:rgba(255,255,255,.10);
  box-shadow:0 0 0 3px rgba(43,92,138,.35);
}
.footer-sub button{
  height:44px;
  border:none;
  border-radius:var(--r-sm);
  background:var(--accent);
  color:#fff;
  font-size:14px;
  font-weight:600;
  cursor:pointer;
  transition:background .2s ease;
}
.footer-sub button:hover{background:var(--accent-dark);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:24px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#8A99AA;
}
.footer-bottom .links{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom .links a{transition:color .2s ease;}
.footer-bottom .links a:hover{color:#fff;}
/* ---------- responsive ---------- */
@media (max-width:1199px){
  .wrap{padding:0 24px;}
  .nav-links{gap:24px;}
  .header-inner{gap:24px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}
@media (max-width:991px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn{display:none;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .page-head{padding:32px 0 56px;}
  .page-head-grid{grid-template-columns:1fr;gap:36px;}
  .page-head-media{aspect-ratio:16/9;}
  .feature{grid-template-columns:1fr;}
  .feature-body{padding:32px;}
  .notice-grid{grid-template-columns:1fr;gap:0;}
  .type-grid{grid-template-columns:1fr;gap:32px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;padding:36px;gap:32px;}
  .cta-band{grid-template-columns:1fr;padding:44px;gap:28px;}
  .cta-actions{flex-direction:row;flex-wrap:wrap;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .wrap{padding:0 20px;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:28px;}
  .page-head h1{font-size:clamp(26px,6vw,32px);}
  .head-stats{gap:20px;}
  .steps{grid-template-columns:1fr;}
  .split{padding:26px;}
  .cta-band{padding:32px 26px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .footer-brand p{max-width:none;}
  .feature-body{padding:26px;}
  .faq-item summary{font-size:15px;padding:18px;}
  .faq-body{padding:0 18px 18px;}
}
@media (max-width:519px){
  .header-inner{height:66px;}
  .brand{font-size:16px;}
  .notice-item{gap:16px;}
  .date-badge{flex:0 0 58px;}
  .date-badge strong{font-size:19px;}
}

/* roulang page: article */
:root{
  --c-primary:#2B5C8A;
  --c-primary-deep:#1E4166;
  --c-primary-soft:#DCE8F3;
  --c-accent:#E4763A;
  --c-accent-deep:#D2662C;
  --c-accent-soft:#FBE7DB;
  --c-bg:#F7F9FC;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF3F9;
  --c-line:#E3E9F1;
  --c-line-2:#DCE5EF;
  --c-text:#16202B;
  --c-text-2:#3D4C5C;
  --c-muted:#6B7A8C;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --sh-1:0 2px 6px rgba(22,32,43,.05),0 12px 28px -12px rgba(22,32,43,.10);
  --sh-2:0 6px 16px rgba(22,32,43,.08),0 24px 48px -16px rgba(22,32,43,.16);
  --dur:.18s;
}
*,*::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-text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",Helvetica,Arial,sans-serif;
  font-size:16px;line-height:1.9;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color var(--dur) ease}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--c-text)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:var(--c-primary-soft);color:var(--c-primary-deep)}

/* 布局容器 */
.grid-container{max-width:1200px;padding-left:32px;padding-right:32px;margin-left:auto;margin-right:auto}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media screen and (max-width:991px){
  .grid-container,.wrap{padding-left:24px;padding-right:24px}
}
@media screen and (max-width:575px){
  .grid-container,.wrap{padding-left:20px;padding-right:20px}
}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:90;background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-stuck{border-bottom-color:var(--c-line);box-shadow:0 8px 24px -18px rgba(22,32,43,.4)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;height:76px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--c-text);white-space:nowrap}
.brand em{font-style:normal;color:var(--c-primary)}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:0 0 auto;display:inline-block}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links li{list-style:none}
.nav-links a{
  position:relative;display:inline-block;padding:8px 0;font-size:15px;font-weight:500;color:var(--c-text-2);
  transition:color var(--dur) ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:2px;height:2px;width:0;background:var(--c-primary);border-radius:2px;
  transition:width .2s ease;
}
.nav-links a:hover{color:var(--c-primary-deep)}
.nav-links a:hover::after{width:100%}
.nav-links a.is-active{color:var(--c-primary-deep)}
.nav-links a.is-active::after{width:100%}
.nav-links a.is-active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--c-accent);
}
.header-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;align-items:center;justify-content:center;flex-direction:column;gap:6px;
  width:44px;height:44px;border:1px solid var(--c-line-2);border-radius:10px;background:#fff;cursor:pointer;
  transition:border-color var(--dur) ease,background var(--dur) ease;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-primary-deep);transition:transform .2s ease}
.nav-toggle:hover{border-color:var(--c-primary);background:var(--c-surface-2)}
.nav-toggle:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(43,92,138,.25)}

/* 移动端抽屉 */
.mobile-drawer{position:fixed;inset:0;z-index:200;background:#fff;padding:20px;display:flex;flex-direction:column;overflow-y:auto}
.mobile-drawer[hidden]{display:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--c-line)}
.drawer-close{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--c-line-2);background:#fff;
  font-size:20px;line-height:1;color:var(--c-primary-deep);cursor:pointer;
}
.drawer-close:hover{background:var(--c-surface-2);border-color:var(--c-primary)}
.drawer-links{margin-top:8px}
.drawer-links li{border-bottom:1px solid var(--c-line)}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:56px;padding:0 4px;font-size:18px;font-weight:500;color:var(--c-primary-deep);
}
.drawer-links a:hover{color:var(--c-accent-deep)}
.drawer-links svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.drawer-foot{margin-top:auto;padding-top:24px;font-size:13px;color:var(--c-muted);line-height:1.8}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn-primary{background:var(--c-primary-deep);color:#fff}
.btn-primary:hover{background:var(--c-primary);transform:translateY(-1px);box-shadow:0 12px 24px -14px rgba(30,65,102,.8)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:var(--c-accent-deep);transform:translateY(-1px);box-shadow:0 12px 24px -14px rgba(210,102,44,.9)}
.btn-ghost{background:#fff;color:var(--c-primary-deep);border-color:var(--c-line-2)}
.btn-ghost:hover{border-color:var(--c-primary);background:var(--c-surface-2)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(43,92,138,.25)}
.btn:active{transform:translateY(0)}

/* 通用文本链接 */
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--c-primary)}
.text-link span{transition:transform var(--dur) ease}
.text-link:hover{color:var(--c-primary-deep)}
.text-link:hover span{transform:translateX(4px)}
.text-link:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(43,92,138,.25);border-radius:6px}

/* 板块 */
.section{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3}
.section-head p{margin-top:8px;font-size:14px;color:var(--c-muted);max-width:52ch}
@media screen and (max-width:991px){.section{padding:56px 0}}
@media screen and (max-width:575px){.section{padding:44px 0}.section-head{flex-direction:column;align-items:flex-start;gap:12px}}

/* 文章页头 */
.article-hero{background:var(--c-surface-2);border-bottom:1px solid var(--c-line);padding:32px 0 56px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted)}
.breadcrumb a{color:var(--c-muted)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:#A9B6C4}
.breadcrumb .current{color:var(--c-text);font-weight:600}
.hero-kicker{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:26px}
.pill{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--c-primary-deep);color:#fff;font-size:12px;font-weight:500;letter-spacing:.02em}
.pill-accent{background:var(--c-accent-soft);color:var(--c-accent-deep)}
.article-title{font-size:clamp(28px,3.4vw,42px);line-height:1.18;margin-top:16px;max-width:24ch}
.article-lede{margin-top:18px;font-size:17px;line-height:1.85;color:var(--c-text-2);max-width:800px}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:24px;font-size:13px;color:var(--c-muted)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C6D2DE}
.meta-row strong{color:var(--c-text-2);font-weight:600}

/* 主图 */
.article-figure{margin:0}
.article-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-md);box-shadow:var(--sh-1)}
.article-figure figcaption{margin-top:12px;font-size:13px;color:var(--c-muted);text-align:center}

/* 两栏 */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:48px;align-items:start;margin-top:48px}
.article-main{min-width:0}

/* 正文排版 */
.article-body{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:44px 48px;box-shadow:var(--sh-1);font-size:16px;line-height:1.9;color:var(--c-text-2)}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 22px}
.article-body h2{
  position:relative;font-size:clamp(20px,2vw,25px);line-height:1.4;color:var(--c-text);
  margin:40px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:2px;background:var(--c-primary);
}
.article-body h3{font-size:19px;font-weight:600;color:var(--c-text);margin:32px 0 12px;line-height:1.45}
.article-body h4{font-size:17px;font-weight:600;color:var(--c-text);margin:24px 0 10px}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:24px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:8px;line-height:1.8}
.article-body blockquote{
  margin:28px 0;padding:18px 24px;border-left:3px solid var(--c-primary);
  background:var(--c-primary-soft);border-radius:0 12px 12px 0;color:var(--c-text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:24px 0;box-shadow:var(--sh-1)}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--c-primary-deep)}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:10px}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:36px 0}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:12px 14px;text-align:left}
.article-body th{background:var(--c-surface-2);color:var(--c-text);font-weight:600}
.article-body strong{color:var(--c-text);font-weight:600}
@media screen and (max-width:767px){
  .article-body{padding:28px 22px;border-radius:var(--r-sm)}
}

/* 空态 */
.empty-state{
  background:#fff;border:1px dashed var(--c-line-2);border-radius:var(--r-md);
  padding:72px 24px;text-align:center;
}
.empty-state svg{width:48px;height:48px;stroke:var(--c-muted);fill:none;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;margin:0 auto 16px}
.empty-state p{font-size:16px;color:var(--c-text-2);margin-bottom:20px}

/* 侧栏 */
.side-col{position:sticky;top:100px}
.side-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:22px;box-shadow:var(--sh-1);margin-bottom:20px}
.side-card h3{font-size:15px;font-weight:600;color:var(--c-text);padding-bottom:14px;margin-bottom:14px;border-bottom:1px solid var(--c-line)}
.side-card p{font-size:14px;line-height:1.85;color:var(--c-text-2)}
.side-chips{display:flex;flex-wrap:wrap;gap:8px}
.side-list li + li{margin-top:14px}
.side-list a{display:block}
.side-list-title{display:block;font-size:14px;line-height:1.6;color:var(--c-text-2);transition:color var(--dur) ease}
.side-list a:hover .side-list-title{color:var(--c-primary)}
.side-list-meta{display:block;margin-top:4px;font-size:12px;color:var(--c-muted)}
.side-card .btn{width:100%;margin-top:18px}
@media screen and (max-width:991px){
  .article-layout{grid-template-columns:1fr;gap:36px}
  .side-col{position:static}
}

/* 标签 chips */
.chip{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  border:1px solid var(--c-line-2);background:#fff;font-size:13px;font-weight:500;color:var(--c-text-2);
  transition:border-color var(--dur) ease,color var(--dur) ease,background var(--dur) ease;
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary-deep);background:var(--c-surface-2)}
.chip:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(43,92,138,.22)}
.tag-block{margin-top:36px;display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tag-block .tag-label{font-size:13px;font-weight:600;color:var(--c-muted);margin-right:4px}

/* 相关推荐卡片 */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);height:100%;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-line-2)}
.post-card figure{margin:0;position:relative;overflow:hidden}
.post-card img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease}
.post-card:hover img{transform:scale(1.04)}
.post-card .card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-card h3{font-size:18px;font-weight:600;line-height:1.4;color:var(--c-text);transition:color var(--dur) ease}
.post-card:hover h3{color:var(--c-primary-deep)}
.post-card p{font-size:14px;line-height:1.8;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card .card-foot{margin-top:auto;font-size:12px;color:var(--c-muted);display:flex;align-items:center;gap:8px}
@media screen and (max-width:991px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media screen and (max-width:575px){.related-grid{grid-template-columns:1fr}}

/* 返回入口 */
.back-row{margin-top:40px;display:flex;align-items:center;gap:10px;font-size:14px;color:var(--c-muted)}
.back-row a{font-weight:600;color:var(--c-primary)}
.back-row a:hover{color:var(--c-primary-deep)}

/* CTA 带 */
.cta-band{
  position:relative;overflow:hidden;background:var(--c-primary-deep);border-radius:var(--r-lg);
  padding:64px;display:flex;align-items:center;justify-content:space-between;gap:40px;color:#fff;
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;border-radius:50%;
  border:1px solid rgba(255,255,255,.08);
  box-shadow:0 0 0 40px rgba(255,255,255,.035),0 0 0 80px rgba(255,255,255,.02);
  pointer-events:none;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,28px);line-height:1.35;max-width:24ch;position:relative;z-index:1}
.cta-band p{margin-top:12px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.72);max-width:46ch;position:relative;z-index:1}
.cta-band .cta-action{position:relative;z-index:1;flex:0 0 auto}
@media screen and (max-width:767px){
  .cta-band{flex-direction:column;align-items:center;text-align:center;padding:44px 26px;gap:24px}
  .cta-band h2,.cta-band p{max-width:100%}
}

/* 页脚 */
.site-footer{background:#14212E;color:#B9C6D4;margin-top:96px;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr 1.4fr;gap:40px}
.footer-brand .brand{color:#fff}
.footer-brand .brand em{color:#8FB7DC}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:#8FA0B3;max-width:32ch}
.socials{display:flex;align-items:center;gap:12px;margin-top:20px}
.socials a{
  display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;
  border:1px solid rgba(255,255,255,.14);color:#B9C6D4;
  transition:border-color var(--dur) ease,color var(--dur) ease,background var(--dur) ease;
}
.socials a svg{width:17px;height:17px;stroke:currentColor;fill:none}
.socials a:hover{border-color:var(--c-accent);color:#fff;background:rgba(228,118,58,.16)}
.footer-col h4{font-size:13px;font-weight:600;color:#fff;letter-spacing:.08em;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;line-height:1.8;color:#B9C6D4;display:inline-block;transition:color var(--dur) ease,transform var(--dur) ease}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-col p{font-size:14px;line-height:1.85;color:#8FA0B3;margin-bottom:8px}
.footer-sub form{display:flex;flex-direction:column;gap:10px;margin-top:4px}
.footer-sub input{
  width:100%;height:46px;padding:0 14px;border-radius:10px;font-size:14px;
  border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.06);color:#fff;
  transition:border-color var(--dur) ease,box-shadow var(--dur) ease;
}
.footer-sub input::placeholder{color:#7E8C9B}
.footer-sub input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(228,118,58,.2)}
.footer-sub button{
  width:100%;height:46px;border:0;border-radius:10px;background:var(--c-accent);color:#fff;
  font-size:14px;font-weight:600;cursor:pointer;transition:background var(--dur) ease;
}
.footer-sub button:hover{background:var(--c-accent-deep)}
.footer-sub button:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(228,118,58,.35)}
.footer-bottom{
  margin-top:56px;padding:22px 0 28px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:#7E8C9B;
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:20px}
.footer-bottom a:hover{color:#fff}
@media screen and (max-width:1199px){
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr;gap:36px}
  .footer-sub{grid-column:span 2}
}
@media screen and (max-width:767px){
  .site-footer{margin-top:64px;padding-top:52px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:span 2}
  .footer-sub{grid-column:span 2}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media screen and (max-width:575px){
  .footer-grid{grid-template-columns:1fr}
  .footer-brand,.footer-sub{grid-column:span 1}
  .header-inner{height:68px}
  .nav-links{display:none}
  .header-actions .btn{display:none}
  .nav-toggle{display:inline-flex}
}
@media screen and (min-width:576px) and (max-width:1023px){
  .nav-links{display:none}
  .header-actions .btn{display:none}
  .nav-toggle{display:inline-flex}
}

/* roulang page: category2 */
:root{
  --brand:#2B5C8A;
  --brand-deep:#1E4166;
  --brand-soft:#DCE8F3;
  --accent:#E4763A;
  --accent-deep:#D2662C;
  --accent-soft:#FBE7DB;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --surface-2:#EEF3F9;
  --line:#E3E9F1;
  --line-soft:#DCE5EF;
  --ink:#16202B;
  --text:#3D4C5C;
  --muted:#6B7A8C;
  --placeholder:#9AA9B8;
  --dark:#14212E;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-1:0 2px 6px rgba(22,32,43,.05), 0 12px 28px -12px rgba(22,32,43,.10);
  --shadow-2:0 6px 16px rgba(22,32,43,.08), 0 24px 48px -16px rgba(22,32,43,.16);
  --ease:180ms ease-out;
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Inter","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure{margin:0;padding:0}
h1,h2,h3,h4,h5,h6{
  font-family:inherit;
  color:var(--ink);
  font-weight:700;
  line-height:1.2;
  letter-spacing:-0.01em;
}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand)}
img{display:block;max-width:100%;border:0}
button,input,textarea,select{font-family:inherit;font-size:inherit}
button{cursor:pointer}
:focus-visible{outline:3px solid rgba(43,92,138,.25);outline-offset:2px;border-radius:6px}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow 220ms ease, border-color 220ms ease;
}
.site-header.is-scrolled{border-bottom:1px solid var(--line);box-shadow:0 10px 26px -22px rgba(22,32,43,.65)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px}
.brand{display:inline-flex;align-items:center;gap:8px;font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--ink);white-space:nowrap}
.brand em{font-style:normal;color:var(--brand)}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
.nav-links{display:flex;align-items:center;gap:32px;margin:0;padding:0}
.nav-links li{list-style:none}
.nav-links a{
  position:relative;display:inline-block;
  font-size:15px;font-weight:500;line-height:1;
  padding:10px 0;color:var(--text);
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:2px;height:2px;width:0;
  background:var(--brand);transition:width 200ms ease;
}
.nav-links a:hover{color:var(--brand-deep)}
.nav-links a:hover::after{width:100%}
.nav-links a.is-active{color:var(--brand-deep);font-weight:600}
.nav-links a.is-active::after{width:100%}
.nav-links a.is-active::before{
  content:"";position:absolute;left:-13px;top:50%;width:5px;height:5px;border-radius:50%;
  background:var(--accent);transform:translateY(-50%);
}
.header-actions{display:flex;align-items:center;gap:14px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border:1px solid transparent;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.btn-primary{background:var(--brand-deep);color:#fff}
.btn-primary:hover{background:var(--brand);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:var(--line-soft);color:var(--brand-deep)}
.btn-ghost:hover{background:var(--surface-2);border-color:var(--brand);color:var(--brand-deep)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);box-shadow:0 14px 30px -14px rgba(226,118,58,.6)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.burger{
  display:none;width:44px;height:44px;border:1px solid var(--line-soft);border-radius:var(--r-sm);
  background:#fff;position:relative;
}
.burger span{
  position:absolute;left:50%;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transform:translateX(-50%);transition:transform 200ms ease,opacity 200ms ease;
}
.burger span:nth-child(1){top:17px}
.burger span:nth-child(2){top:24px}
.drawer{
  position:fixed;inset:0;z-index:80;background:#fff;
  display:flex;flex-direction:column;padding:18px 20px 24px;
  opacity:0;pointer-events:none;transform:translateY(-10px);
  transition:opacity 200ms ease,transform 200ms ease;
}
.drawer.is-open{opacity:1;pointer-events:auto;transform:none}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:56px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;border:1px solid var(--line-soft);border-radius:var(--r-sm);background:#fff;color:var(--brand-deep);font-size:20px;line-height:1}
.drawer nav ul{margin-top:6px}
.drawer nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:18px;font-weight:500;color:var(--brand-deep);
  border-bottom:1px solid var(--line);
}
.drawer nav a.is-active{color:var(--accent-deep)}
.drawer-foot{margin-top:auto;padding-top:20px;font-size:13px;color:var(--muted);line-height:1.9}

/* ---------- page head ---------- */
.page-head{
  position:relative;
  padding:44px 0 56px;
  background:
    linear-gradient(115deg, rgba(220,232,243,0) 58%, rgba(220,232,243,.65) 58%) no-repeat,
    var(--bg);
  background-size:100% 100%;
  overflow:hidden;
}
.crumbs{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-bottom:24px;flex-wrap:wrap}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:var(--line-soft)}
.crumbs .current{color:var(--ink);font-weight:600}
.head-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:56px;align-items:start}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border-radius:var(--r-pill);padding:6px 14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.page-head h1{
  font-size:clamp(30px,3.4vw,42px);
  line-height:1.16;
  margin:20px 0 18px;
  letter-spacing:-0.01em;
}
.lead{font-size:17px;line-height:1.85;color:var(--text);max-width:640px}
.head-actions{display:flex;align-items:center;gap:22px;margin-top:28px;flex-wrap:wrap}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:15px;font-weight:600;transition:gap var(--ease),color var(--ease)}
.text-link:hover{gap:12px;color:var(--brand-deep)}
.head-aside{
  border-left:1px solid var(--line-soft);
  padding-left:32px;
  min-height:220px;
}
.head-aside .aside-title{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px}
.head-list li{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:13px 0;border-bottom:1px solid var(--line);
  font-size:14px;color:var(--text);
}
.head-list li:first-child{padding-top:0}
.head-list .v{font-size:20px;font-weight:700;color:var(--brand-deep);font-feature-settings:"tnum"}
.aside-note{margin-top:18px;font-size:13px;color:var(--muted);line-height:1.85}

/* ---------- sections ---------- */
.section{padding:84px 0}
.section.alt{background:var(--surface-2)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:32px}
.section-head h2{font-size:clamp(24px,2.6vw,32px)}
.section-head .sub{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.8;max-width:560px}
.rail-nav{display:flex;gap:10px;flex:none}
.rail-btn{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line-soft);background:#fff;color:var(--brand-deep);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background var(--ease),color var(--ease),border-color var(--ease),opacity var(--ease);
}
.rail-btn svg{width:16px;height:16px;stroke:currentColor;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}
.rail-btn:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff}
.rail-btn[disabled]{opacity:.4;cursor:not-allowed}
.rail-btn[disabled]:hover{background:#fff;color:var(--brand-deep);border-color:var(--line-soft)}

.rail-bleed{
  margin-inline:calc(-1 * (50vw - 50%));
  padding-inline:calc(50vw - 50%);
}
.rail{
  display:flex;gap:20px;
  overflow-x:auto;overflow-y:hidden;
  scroll-snap-type:x mandatory;
  padding:4px 0 14px;
  scrollbar-width:thin;
  -webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:var(--line-soft);border-radius:99px}
.rail > li{flex:0 0 260px;scroll-snap-align:start;list-style:none}
.rail-card a{display:block}
.poster{
  position:relative;border-radius:var(--r-md);overflow:hidden;
  aspect-ratio:3/4;background:var(--surface-2);
  box-shadow:var(--shadow-1);
  transition:box-shadow var(--ease),transform var(--ease);
}
.poster img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease}
.poster::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-md);
  box-shadow:inset 0 0 0 1px rgba(22,32,43,.06);
  pointer-events:none;
}
.rail-card:hover .poster{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.rail-card:hover .poster img{transform:scale(1.04)}
.rail-card:hover h3{color:var(--brand)}
.pill{
  position:absolute;top:12px;right:12px;
  height:24px;line-height:24px;padding:0 12px;
  background:var(--brand-deep);color:#fff;
  font-size:12px;font-weight:500;border-radius:var(--r-pill);
  white-space:nowrap;
}
.pill.accent{background:var(--accent-soft);color:var(--accent-deep)}
.rail-card h3{
  margin:14px 0 6px;
  font-size:18px;font-weight:600;line-height:1.35;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color var(--ease);
}
.meta-line{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:8px}
.meta-line .dot{width:3px;height:3px;border-radius:50%;background:var(--line-soft)}

/* wide rail */
.rail-wide > li{flex:0 0 340px}
.rail-wide .poster{aspect-ratio:16/10}
.rail-wide h3{font-size:17px}
.rail-wide p{margin-top:6px;font-size:13px;line-height:1.8;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- poster picks ---------- */
.pick-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.pick{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.pick:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--line-soft);color:inherit}
.pick .thumb{position:relative;aspect-ratio:3/4;overflow:hidden;background:var(--surface-2)}
.pick .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease}
.pick:hover .thumb img{transform:scale(1.04)}
.pick .thumb .rank{
  position:absolute;left:12px;top:12px;
  width:32px;height:32px;border-radius:50%;
  background:rgba(20,33,46,.72);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;
}
.pick .body{padding:18px 20px 20px}
.pick h3{font-size:18px;line-height:1.4;margin-bottom:8px}
.pick p{font-size:13px;line-height:1.8;color:var(--text);margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pick .more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);transition:gap var(--ease)}
.pick:hover .more{gap:12px}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:56px;align-items:start}
.faq-layout h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:14px}
.faq-layout .sub{font-size:14px;line-height:1.85;color:var(--muted);margin-bottom:20px;max-width:300px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:12px;transition:background var(--ease),border-color var(--ease)}
.faq-item:hover{background:#FBFCFE;border-color:var(--line-soft)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px;border:0;background:transparent;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;
}
.faq-icon{position:relative;width:16px;height:16px;flex:none}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);
  transform:translate(-50%,-50%);transition:transform 220ms ease,background var(--ease);
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-item.is-open .faq-q{color:var(--brand-deep)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms ease}
.faq-a p{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--text)}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--brand-deep);
  border-radius:24px;
  padding:56px 64px;
  display:flex;align-items:center;justify-content:space-between;gap:48px;
  color:#fff;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-90px;width:340px;height:340px;border-radius:50%;
  border:1px solid rgba(255,255,255,.16);box-shadow:0 0 0 40px rgba(255,255,255,.05);
  pointer-events:none;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;opacity:.10;pointer-events:none;
}
.cta-copy{position:relative;z-index:1;max-width:620px}
.cta-copy h2{color:#fff;font-size:clamp(20px,2.3vw,28px);line-height:1.35}
.cta-copy p{margin-top:12px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.78)}
.cta-actions{position:relative;z-index:1;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.cta-band .btn-ghost{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:#B9C6D4;padding:72px 0 28px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr 1.3fr;gap:40px}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand .brand em{color:#8FB6DA}
.footer-brand p{font-size:14px;line-height:1.85;color:#9FB0C2;max-width:280px}
.socials{display:flex;gap:10px;margin-top:20px}
.socials a{
  width:36px;height:36px;border-radius:50%;
  border:1px solid rgba(255,255,255,.16);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background var(--ease),border-color var(--ease);
}
.socials a:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.4)}
.socials svg{width:16px;height:16px;stroke:#B9C6D4;fill:none}
.footer-col h4{font-size:13px;font-weight:600;color:#fff;letter-spacing:.08em;margin-bottom:18px;text-transform:uppercase}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;line-height:1.8;color:#B9C6D4;display:inline-block;transition:color var(--ease),transform var(--ease)}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-col p{font-size:14px;line-height:1.85;color:#9FB0C2;margin-bottom:6px}
.footer-sub form{display:flex;gap:8px;margin-top:4px}
.footer-sub input{
  flex:1;min-width:0;height:44px;padding:0 14px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-sm);color:#fff;font-size:14px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.footer-sub input::placeholder{color:#8496A8}
.footer-sub input:focus{outline:none;border-color:#8FB6DA;box-shadow:0 0 0 3px rgba(143,182,218,.18)}
.footer-sub button{
  height:44px;padding:0 18px;border:0;border-radius:var(--r-sm);
  background:var(--accent);color:#fff;font-size:14px;font-weight:600;
  transition:background var(--ease);
}
.footer-sub button:hover{background:var(--accent-deep)}
.footer-bottom{
  margin-top:52px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8496A8;
}
.footer-bottom .links{display:flex;gap:22px;flex-wrap:wrap}
.footer-bottom a{color:#9FB0C2}
.footer-bottom a:hover{color:#fff}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .head-grid{gap:40px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px}
}
@media (max-width:991px){
  .section{padding:72px 0}
  .nav-links{gap:22px}
  .nav-links a{font-size:14px}
  .head-grid{grid-template-columns:1fr;gap:32px}
  .head-aside{border-left:0;padding-left:0;border-top:1px solid var(--line-soft);padding-top:24px;min-height:0}
  .head-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
  .head-list li{display:block;padding:10px 0;border-bottom:0}
  .head-list .v{display:block;margin-top:4px}
  .piece-grid,.pick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .faq-layout .sub{max-width:none}
  .cta-band{padding:44px 36px;flex-direction:column;align-items:flex-start;gap:28px}
  .rail-wide > li{flex-basis:300px}
}
@media (max-width:860px){
  .nav-links{display:none}
  .burger{display:inline-flex;align-items:center;justify-content:center}
  .header-actions .btn{display:none}
  .header-inner{height:68px}
}
@media (max-width:767px){
  .wrap{padding:0 24px}
  .section{padding:56px 0}
  .page-head{padding:32px 0 40px}
  .lead{font-size:16px}
  .pick-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:36px 26px;border-radius:20px}
  .section-head{flex-direction:column;align-items:flex-start;gap:18px}
}
@media (max-width:520px){
  .wrap{padding:0 20px}
  .rail > li{flex:0 0 200px}
  .rail-wide > li{flex:0 0 240px}
  .head-list{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .faq-q{padding:18px;font-size:15px}
  .faq-a p{padding:0 18px 18px}
  .rail-bleed{margin-inline:calc(-1 * (50vw - 50%));padding-inline:calc(50vw - 50%)}
}

/* roulang page: category3 */
:root{
  --brand:#2B5C8A;
  --brand-deep:#1E4166;
  --brand-light:#DCE8F3;
  --accent:#E4763A;
  --accent-deep:#D2662C;
  --accent-soft:#FBE7DB;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --sub:#EEF3F9;
  --line:#E3E9F1;
  --line-soft:#DCE5EF;
  --text:#16202B;
  --text-2:#3D4C5C;
  --meta:#6B7A8C;
  --radius-s:10px;
  --radius:16px;
  --radius-l:24px;
  --shadow:0 2px 6px rgba(22,32,43,.05),0 12px 28px -12px rgba(22,32,43,.10);
  --shadow-hover:0 6px 16px rgba(22,32,43,.08),0 24px 48px -16px rgba(22,32,43,.16);
  --ease:180ms cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Inter","Helvetica Neue",Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand-deep);}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;}
:focus-visible{outline:3px solid rgba(43,92,138,.25);outline-offset:2px;border-radius:6px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-alt{background:var(--sub);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(24px,2.4vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.01em;color:var(--text);}
.section-head p{color:var(--meta);font-size:15px;max-width:520px;margin-top:8px;line-height:1.8;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);transition:color var(--ease),gap var(--ease);}
.link-arrow span{transition:transform var(--ease);display:inline-block;}
.link-arrow:hover{color:var(--brand-deep);}
.link-arrow:hover span{transform:translateX(4px);}

/* ======= 按钮 ======= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-s);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;text-align:center;
  transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.btn-primary{background:var(--brand-deep);color:#fff;box-shadow:0 2px 6px rgba(30,65,102,.18);}
.btn-primary:hover{background:var(--brand);color:#fff;transform:translateY(-1px);box-shadow:0 6px 16px rgba(30,65,102,.24);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 2px 6px rgba(228,118,58,.22);}
.btn-accent:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:#fff;color:var(--brand-deep);border-color:var(--line-soft);}
.btn-ghost:hover{background:var(--sub);border-color:var(--brand);color:var(--brand-deep);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}

/* ======= 头部导航 ======= */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid transparent;
  transition:box-shadow var(--ease),border-color var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 8px 22px -16px rgba(22,32,43,.35);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;height:76px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--text);}
.brand:hover{color:var(--text);}
.brand em{font-style:normal;color:var(--brand);}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;flex:none;}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:500;color:var(--text-2);
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--brand);transition:width var(--ease);
}
.nav-links a:hover{color:var(--brand-deep);}
.nav-links a:hover::after{width:100%;}
.nav-links a.is-active{color:var(--brand-deep);font-weight:600;}
.nav-links a.is-active::after{width:100%;}
.nav-links a.is-active::before{
  content:"";position:absolute;left:-13px;top:50%;transform:translateY(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--accent);
}
.header-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line-soft);border-radius:var(--radius-s);
  background:#fff;position:relative;
}
.nav-toggle span{
  position:absolute;left:13px;width:18px;height:2px;background:var(--brand-deep);
  border-radius:2px;transition:transform var(--ease),opacity var(--ease);
}
.nav-toggle span:nth-child(1){top:18px;}
.nav-toggle span:nth-child(2){top:25px;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(3.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){transform:translateY(-3.5px) rotate(-45deg);}
.mobile-drawer{
  display:none;position:fixed;inset:0;z-index:80;background:#fff;
  padding:20px;overflow-y:auto;
}
.mobile-drawer.is-open{display:block;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:56px;margin-bottom:12px;}
.drawer-close{width:44px;height:44px;border:1px solid var(--line-soft);border-radius:var(--radius-s);background:#fff;font-size:20px;color:var(--brand-deep);line-height:1;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:56px;font-size:18px;font-weight:500;color:var(--brand-deep);
  border-bottom:1px solid var(--line);
}
.drawer-nav a::after{content:"›";font-size:20px;color:var(--meta);}
.drawer-foot{margin-top:24px;font-size:14px;color:var(--meta);line-height:1.9;}

/* ======= 面包屑 ======= */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--meta);}
.crumbs a{color:var(--meta);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:#B6C2CF;}
.crumbs .current{color:var(--text);font-weight:600;}

/* ======= 页头 ======= */
.page-head{position:relative;overflow:hidden;background:var(--bg);}
.page-head::after{
  content:"";position:absolute;right:-140px;top:-120px;width:620px;height:620px;
  background:linear-gradient(135deg,rgba(220,232,243,.85),rgba(220,232,243,0));
  border-radius:50%;pointer-events:none;
}
.page-head-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center;
  padding:28px 0 72px;
}
.page-head h1{
  font-size:clamp(30px,3.4vw,42px);font-weight:700;line-height:1.18;letter-spacing:-.01em;
  margin:18px 0 16px;color:var(--text);
}
.page-head .lead{font-size:16px;line-height:1.9;color:var(--text-2);max-width:560px;}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:500;background:var(--brand-light);color:var(--brand-deep);
}
.tag-accent{background:var(--accent-soft);color:#9A4A1D;}
.head-figure{position:relative;}
.head-figure img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:20px;
  box-shadow:var(--shadow);
}
.head-figure .float-card{
  position:absolute;left:-24px;bottom:-24px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:16px 20px;box-shadow:var(--shadow);min-width:190px;
}
.float-card strong{display:block;font-size:20px;font-weight:700;color:var(--brand-deep);line-height:1.2;}
.float-card span{font-size:12px;color:var(--meta);}

/* ======= 服务主体：锚点 + 步骤 ======= */
.service-layout{display:grid;grid-template-columns:280px 1fr;gap:56px;align-items:start;}
.anchor-card{
  position:sticky;top:100px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow);
}
.anchor-title{
  font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--meta);
  text-transform:uppercase;margin-bottom:12px;
}
.anchor-list li + li{margin-top:4px;}
.anchor-list a{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;border-radius:var(--radius-s);
  font-size:14px;color:var(--text-2);line-height:1.5;
  transition:background var(--ease),color var(--ease);
}
.anchor-list .num{
  font-size:12px;font-weight:700;color:var(--meta);
  font-variant-numeric:tabular-nums;flex:none;
}
.anchor-list a:hover{background:var(--sub);color:var(--brand-deep);}
.anchor-list a.is-active{background:var(--brand-light);color:var(--brand-deep);font-weight:600;}
.anchor-list a.is-active .num{color:var(--brand);}
.anchor-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);}
.anchor-foot p{font-size:13px;line-height:1.8;color:var(--meta);margin-bottom:12px;}
.anchor-foot .btn{width:100%;}

.steps{position:relative;}
.step{
  position:relative;display:grid;grid-template-columns:76px 1fr;gap:24px;
  padding-bottom:32px;
}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:37px;top:56px;bottom:0;width:1px;background:var(--line);
}
.step:last-child::before{display:none;}
.step-no{
  display:flex;align-items:center;justify-content:center;
  width:76px;height:56px;border:1px solid var(--brand-light);border-radius:14px;
  background:#fff;color:var(--brand);font-size:19px;font-weight:700;
  font-variant-numeric:tabular-nums;letter-spacing:.02em;position:relative;z-index:1;
  transition:border-color var(--ease),color var(--ease),box-shadow var(--ease);
}
.step-body{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 28px;box-shadow:var(--shadow);
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.step:hover .step-body{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:var(--brand-light);}
.step:hover .step-no{border-color:var(--brand);color:var(--brand-deep);}
.step-body h3{font-size:19px;font-weight:600;line-height:1.4;color:var(--text);margin-bottom:10px;}
.step-body p{font-size:15px;line-height:1.9;color:var(--text-2);}
.step-body p + p{margin-top:10px;}
.step-meta{
  display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:16px;padding-top:16px;
  border-top:1px dashed var(--line);font-size:13px;color:var(--meta);
}
.step-meta span{display:inline-flex;align-items:center;gap:6px;}
.step-meta b{color:var(--brand-deep);font-weight:600;}

/* ======= 服务方式图文行 ======= */
.feature-rows{display:grid;gap:28px;}
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-l);
  overflow:hidden;box-shadow:var(--shadow);
  transition:box-shadow var(--ease),transform var(--ease);
}
.feature-row:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.feature-row.reverse .feature-media{order:2;}
.feature-media{position:relative;min-height:280px;}
.feature-media img{width:100%;height:100%;object-fit:cover;}
.feature-text{padding:40px 44px;display:flex;flex-direction:column;justify-content:center;}
.feature-text h3{font-size:21px;font-weight:600;line-height:1.4;margin-bottom:12px;color:var(--text);}
.feature-text p{font-size:15px;line-height:1.9;color:var(--text-2);}
.feature-list{margin:18px 0 22px;display:grid;gap:8px;}
.feature-list li{
  position:relative;padding-left:18px;font-size:14px;line-height:1.8;color:var(--text-2);
}
.feature-list li::before{
  content:"";position:absolute;left:2px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--accent);
}

/* ======= 数据条 ======= */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--radius-l);background:var(--surface);
  overflow:hidden;box-shadow:var(--shadow);
}
.metric{padding:32px 28px;border-left:1px solid var(--line);}
.metric:first-child{border-left:none;}
.metric strong{display:block;font-size:28px;font-weight:700;color:var(--brand-deep);line-height:1.2;font-variant-numeric:tabular-nums;}
.metric span{display:block;margin-top:8px;font-size:13px;line-height:1.7;color:var(--meta);}

/* ======= FAQ ======= */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
.faq-side h2{font-size:clamp(24px,2.4vw,30px);font-weight:700;line-height:1.3;margin-bottom:14px;}
.faq-side p{font-size:15px;line-height:1.9;color:var(--text-2);margin-bottom:18px;}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  padding:0 20px;transition:background var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{background:#FBFCFE;border-color:var(--brand-light);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:16px;font-weight:600;color:var(--text);cursor:pointer;
  list-style:none;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:none;font-size:20px;font-weight:400;color:var(--meta);
  line-height:1;transition:color var(--ease),transform var(--ease);
}
.faq-item[open] summary::after{content:"−";color:var(--brand);}
.faq-item[open] summary{color:var(--brand-deep);}
.faq-answer{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--text-2);}

/* ======= CTA 带 ======= */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--brand-deep);border-radius:var(--radius-l);
  padding:64px;display:flex;align-items:center;justify-content:space-between;gap:48px;
  color:#fff;
}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  border:1px solid rgba(255,255,255,.14);border-radius:50%;
  box-shadow:0 0 0 60px rgba(255,255,255,.05),0 0 0 130px rgba(255,255,255,.035);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(22px,2.2vw,28px);font-weight:700;line-height:1.35;margin-bottom:12px;color:#fff;position:relative;z-index:1;}
.cta-band p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.72);max-width:560px;position:relative;z-index:1;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1;flex:none;}

/* ======= 页脚 ======= */
.site-footer{background:#14212E;color:#B9C6D4;padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr 1.3fr;gap:40px;}
.footer-brand .brand{color:#fff;margin-bottom:16px;}
.footer-brand .brand em{color:#8FB6DA;}
.footer-brand p{font-size:14px;line-height:1.9;color:#93A5B7;max-width:280px;}
.socials{display:flex;gap:10px;margin-top:20px;}
.socials a{
  width:38px;height:38px;border-radius:10px;border:1px solid rgba(255,255,255,.12);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background var(--ease),border-color var(--ease),transform var(--ease);
}
.socials a:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.28);transform:translateY(-2px);}
.socials svg{width:18px;height:18px;stroke:#B9C6D4;fill:none;}
.footer-col h4{
  font-size:13px;font-weight:600;letter-spacing:.08em;color:#fff;
  margin-bottom:16px;text-transform:uppercase;
}
.footer-col ul li + li{margin-top:8px;}
.footer-col a{font-size:14px;line-height:1.8;color:#B9C6D4;display:inline-block;transition:color var(--ease),transform var(--ease);}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-col p{font-size:14px;line-height:1.85;color:#93A5B7;}
.footer-col p + p{margin-top:8px;}
.footer-sub form{display:flex;gap:8px;margin-top:4px;}
.footer-sub input{
  flex:1;min-width:0;height:44px;padding:0 14px;border-radius:var(--radius-s);
  border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.05);
  color:#fff;font-size:14px;transition:border-color var(--ease),background var(--ease);
}
.footer-sub input::placeholder{color:#7E8FA1;}
.footer-sub input:focus{outline:none;border-color:#8FB6DA;background:rgba(255,255,255,.08);box-shadow:0 0 0 3px rgba(143,182,218,.16);}
.footer-sub button{
  height:44px;padding:0 18px;border:none;border-radius:var(--radius-s);
  background:var(--accent);color:#fff;font-size:14px;font-weight:600;
  transition:background var(--ease),transform var(--ease);
}
.footer-sub button:hover{background:var(--accent-deep);transform:translateY(-1px);}
.footer-bottom{
  margin-top:56px;padding:22px 0 26px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13px;color:#7E8FA1;
}
.footer-bottom .links{display:flex;gap:22px;flex-wrap:wrap;}
.footer-bottom a{font-size:13px;color:#93A5B7;}
.footer-bottom a:hover{color:#fff;}

/* ======= 响应式 ======= */
@media (max-width:1199px){
  .wrap{max-width:1140px;}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;row-gap:36px;}
}
@media (max-width:991px){
  .wrap{padding:0 24px;}
  .section{padding:72px 0;}
  .nav-links,.header-actions .btn{display:none;}
  .nav-toggle{display:block;}
  .page-head-inner{grid-template-columns:1fr;gap:36px;padding:20px 0 56px;}
  .head-figure{max-width:560px;}
  .head-figure .float-card{left:16px;bottom:-18px;}
  .service-layout{grid-template-columns:1fr;gap:32px;}
  .anchor-card{position:static;}
  .anchor-list{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none;}
  .anchor-list::-webkit-scrollbar{display:none;}
  .anchor-list li{flex:none;}
  .anchor-list li + li{margin-top:0;}
  .anchor-list a{white-space:nowrap;border:1px solid var(--line-soft);background:#fff;padding:8px 14px;}
  .anchor-foot{display:none;}
  .feature-row{grid-template-columns:1fr;}
  .feature-row.reverse .feature-media{order:0;}
  .feature-media{min-height:220px;aspect-ratio:16/9;}
  .feature-text{padding:32px;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .metric{border-left:1px solid var(--line);}
  .metric:nth-child(odd){border-left:none;}
  .metric:nth-child(n+3){border-top:1px solid var(--line);}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:44px 36px;gap:28px;}
  .cta-band p,.cta-actions{text-align:left;}
  .site-footer{padding-top:56px;}
  .footer-grid{grid-template-columns:1fr 1fr;row-gap:32px;}
}
@media (max-width:575px){
  .wrap{padding:0 20px;}
  .section{padding:56px 0;}
  .header-inner{height:68px;gap:16px;}
  .brand{font-size:17px;}
  .page-head h1{font-size:28px;}
  .page-head .lead{font-size:15px;}
  .step{grid-template-columns:1fr;gap:14px;padding-bottom:24px;}
  .step::before{display:none;}
  .step-no{width:60px;height:44px;font-size:16px;border-radius:12px;}
  .step-body{padding:22px 20px;}
  .step-body h3{font-size:17px;}
  .feature-text{padding:26px 22px;}
  .metrics{grid-template-columns:1fr;}
  .metric{border-left:none;}
  .metric + .metric{border-top:1px solid var(--line);}
  .cta-band{padding:36px 24px;border-radius:18px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-brand p{max-width:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
}

/* roulang page: category4 */
:root{
  --brand:#2B5C8A;
  --brand-deep:#1E4166;
  --brand-soft:#DCE8F3;
  --accent:#E4763A;
  --accent-deep:#D2662C;
  --accent-soft:#FBE7DB;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --surface-2:#EEF3F9;
  --line:#E3E9F1;
  --line-soft:#DCE5EF;
  --ink:#16202B;
  --ink-2:#3D4C5C;
  --meta:#6B7A8C;
  --footer-bg:#14212E;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --shadow-1:0 2px 6px rgba(22,32,43,.05),0 12px 28px -12px rgba(22,32,43,.10);
  --shadow-2:0 6px 16px rgba(22,32,43,.08),0 24px 48px -16px rgba(22,32,43,.16);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:96px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Inter","Helvetica Neue",Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--brand);}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;}
input,button,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:3px solid rgba(43,92,138,.25);outline-offset:2px;border-radius:6px;}
.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--brand-deep);color:#fff;
  padding:10px 18px;border-radius:0 0 var(--r-sm) 0;z-index:200;
}
.skip-link:focus{left:0;color:#fff;}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(247,249,252,.92);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{
  background:#fff;
  border-bottom-color:var(--line);
  box-shadow:0 8px 24px -18px rgba(22,32,43,.45);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:var(--sp-6);
  min-height:76px;
}
.brand{
  display:inline-flex;align-items:center;gap:9px;
  font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--ink);
  white-space:nowrap;
}
.brand:hover{color:var(--ink);}
.brand em{font-style:normal;color:var(--brand);}
.brand-dot{
  width:6px;height:6px;border-radius:50%;background:var(--accent);
  display:inline-block;flex:0 0 auto;margin-top:-6px;
}
.nav-links{
  display:flex;align-items:center;gap:32px;
  margin:0;
}
.nav-links li{margin:0;}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;font-weight:500;color:var(--ink-2);
  line-height:1.4;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:-4px;height:2px;width:0;
  background:var(--brand);transition:width .22s ease;border-radius:2px;
}
.nav-links a:hover{color:var(--brand-deep);}
.nav-links a:hover::after{width:100%;}
.nav-links a.is-active{color:var(--brand-deep);font-weight:600;}
.nav-links a.is-active::after{width:100%;}
.nav-links a.is-active::before{
  content:"";position:absolute;left:-10px;top:50%;transform:translateY(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--accent);
}
.header-actions{display:flex;align-items:center;gap:var(--sp-3);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
  cursor:pointer;text-align:center;
}
.btn-primary{background:var(--brand-deep);color:#fff;box-shadow:0 8px 20px -14px rgba(30,65,102,.9);}
.btn-primary:hover{background:var(--brand);color:#fff;transform:translateY(-1px);box-shadow:0 14px 28px -16px rgba(30,65,102,.95);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand-deep);border-color:var(--line-soft);}
.btn-ghost:hover{background:var(--surface-2);color:var(--brand-deep);border-color:var(--brand);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand);
}
.text-link .arrow{transition:transform .2s ease;display:inline-block;}
.text-link:hover{color:var(--brand-deep);}
.text-link:hover .arrow{transform:translateX(3px);}
.menu-toggle{
  display:none;
  width:44px;height:44px;border:1px solid var(--line-soft);background:#fff;
  border-radius:var(--r-sm);align-items:center;justify-content:center;
  flex-direction:column;gap:5px;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .22s ease,opacity .22s ease;}
.menu-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg);}
.menu-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg);}

/* ===== Notice bar ===== */
.notice-bar{
  background:var(--brand-soft);
  border-bottom:1px solid #cbdcf0;
}
.notice-inner{
  display:flex;align-items:center;gap:10px;
  padding:11px 0;
  font-size:14px;color:#20415f;line-height:1.6;
}
.notice-inner svg{flex:0 0 auto;width:17px;height:17px;stroke:var(--brand-deep);}
.notice-inner a{color:var(--brand-deep);font-weight:600;text-decoration:underline;text-underline-offset:3px;}

/* ===== Breadcrumb ===== */
.crumbs{
  padding:26px 0 0;
  font-size:13px;color:var(--meta);line-height:1.6;
}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li + li::before{content:"/";color:#b3c0ce;}
.crumbs a{color:var(--meta);}
.crumbs a:hover{color:var(--brand);}
.crumbs .current{color:var(--ink);font-weight:600;}

/* ===== Page head ===== */
.page-head{padding:var(--sp-4) 0 var(--sp-7);}
.page-head-inner{
  display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);
  gap:var(--sp-7);align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.12em;
  color:var(--brand);text-transform:uppercase;
  background:var(--brand-soft);
  padding:5px 12px;border-radius:999px;margin-bottom:var(--sp-4);
}
h1{
  font-size:clamp(30px,4vw,42px);
  font-weight:700;line-height:1.15;letter-spacing:-.01em;
  color:var(--ink);
}
h1 .hl{color:var(--brand);}
.lead{
  margin-top:var(--sp-4);
  font-size:16px;color:var(--ink-2);line-height:1.9;max-width:56ch;
}
.head-metrics{
  display:flex;flex-wrap:wrap;align-items:center;gap:var(--sp-5);
  margin-top:var(--sp-5);padding-top:var(--sp-5);
  border-top:1px solid var(--line);
}
.head-metrics div{display:flex;flex-direction:column;gap:2px;}
.head-metrics strong{font-size:20px;font-weight:700;color:var(--brand-deep);line-height:1.2;}
.head-metrics span{font-size:13px;color:var(--meta);}
.head-figure{
  position:relative;border-radius:20px;overflow:hidden;
  box-shadow:var(--shadow-1);border:1px solid var(--line);
  aspect-ratio:4/3;background:var(--surface-2);
}
.head-figure img{width:100%;height:100%;object-fit:cover;}
.head-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 18px;font-size:13px;color:#eaf1f8;line-height:1.6;
  background:linear-gradient(to top,rgba(20,33,46,.82),rgba(20,33,46,0));
}

/* ===== Main grid ===== */
.section{padding:var(--sp-8) 0;}
.section-alt{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{margin-bottom:var(--sp-6);}
.section-head h2{
  font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.2;color:var(--ink);
}
.section-head p{margin-top:10px;font-size:15px;color:var(--meta);max-width:62ch;}
.help-layout{
  display:grid;grid-template-columns:minmax(0,2.05fr) minmax(0,1fr);
  gap:var(--sp-6);align-items:start;
}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{background:#F7F9FC;}
.faq-item[open]{
  border-color:#c9dcf0;box-shadow:var(--shadow-1);background:#fff;
}
.faq-item summary{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:20px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.55;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;width:24px;height:24px;line-height:22px;text-align:center;
  border-radius:50%;border:1px solid var(--line-soft);
  color:var(--brand);font-size:16px;font-weight:500;
  transition:color .2s ease,border-color .2s ease,transform .2s ease,background .2s ease;
}
.faq-item[open] summary::after{
  content:"−";color:#fff;background:var(--brand);border-color:var(--brand);
}
.faq-item[open] summary{color:var(--brand-deep);}
.faq-body{
  padding:0 20px 20px;
  font-size:15px;line-height:1.85;color:var(--ink-2);
}
.faq-body p + p{margin-top:10px;}
.faq-body ul{margin-top:10px;display:flex;flex-direction:column;gap:6px;}
.faq-body li{position:relative;padding-left:16px;font-size:14px;line-height:1.8;}
.faq-body li::before{
  content:"";position:absolute;left:0;top:11px;width:5px;height:5px;
  border-radius:50%;background:var(--accent);
}

/* Sidebar */
.side{display:flex;flex-direction:column;gap:var(--sp-4);position:sticky;top:100px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:22px;box-shadow:var(--shadow-1);
}
.side-card h3{
  font-size:16px;font-weight:700;color:var(--ink);margin-bottom:14px;line-height:1.4;
}
.side-card p{font-size:14px;color:var(--meta);line-height:1.8;}
.search-form{display:flex;flex-direction:column;gap:10px;}
.search-form label{font-size:13px;font-weight:500;color:var(--ink-2);}
.search-form input[type="search"],
.search-form input[type="text"]{
  width:100%;height:48px;padding:0 16px;
  border:1px solid var(--line-soft);border-radius:var(--r-sm);
  background:#fff;color:var(--ink);font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
  appearance:none;
}
.search-form input::placeholder{color:#9AA9B8;}
.search-form input:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(43,92,138,.15);
}
.hot-list{display:flex;flex-direction:column;gap:2px;margin-top:2px;}
.hot-list a{
  display:flex;align-items:center;gap:10px;
  padding:9px 0;font-size:14px;color:var(--ink-2);line-height:1.6;
  border-bottom:1px dashed var(--line);
  transition:color .2s ease,transform .2s ease;
}
.hot-list li:last-child a{border-bottom:none;}
.hot-list a:hover{color:var(--brand);transform:translateX(2px);}
.hot-list .idx{
  flex:0 0 auto;width:20px;height:20px;border-radius:6px;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:11px;font-weight:700;line-height:20px;text-align:center;
}
.side-contact{
  background:var(--brand-deep);border-color:var(--brand-deep);color:#dbe7f3;
}
.side-contact h3{color:#fff;}
.side-contact p{color:#c3d5e6;}
.side-contact .btn{margin-top:16px;}
.side-contact .btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.35);color:#fff;}
.side-contact .btn-ghost:hover{background:rgba(255,255,255,.18);border-color:#fff;color:#fff;}

/* Steps */
.steps-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--sp-5);margin-top:var(--sp-6);
}
.step-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:26px 24px;
  box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#c9dcf0;}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:14px;
}
.step-card h3{font-size:18px;font-weight:600;color:var(--ink);line-height:1.35;margin-bottom:8px;}
.step-card p{font-size:14px;color:var(--ink-2);line-height:1.8;}

/* CTA band */
.cta-band{
  background:var(--brand-deep);
  border-radius:var(--r-lg);
  padding:64px;
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-6);
  color:#fff;
}
.cta-band::before{
  content:"";position:absolute;right:-120px;top:-120px;
  width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(255,255,255,.10);
  box-shadow:0 0 0 60px rgba(255,255,255,.04),0 0 0 130px rgba(255,255,255,.03);
  pointer-events:none;
}
.cta-copy{position:relative;z-index:1;max-width:620px;}
.cta-copy h2{
  font-size:clamp(20px,2.6vw,28px);font-weight:700;line-height:1.3;color:#fff;
}
.cta-copy p{margin-top:12px;font-size:15px;color:#c3d5e6;line-height:1.85;}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:12px;}

/* Footer */
.site-footer{background:var(--footer-bg);color:#B9C6D4;margin-top:var(--sp-9);padding:var(--sp-8) 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.25fr 1.25fr;
  gap:var(--sp-6);
  padding-bottom:var(--sp-7);
}
.footer-brand .brand{color:#fff;font-size:18px;margin-bottom:14px;display:inline-flex;}
.footer-brand .brand em{color:#8fb6da;}
.footer-brand p{font-size:14px;line-height:1.85;color:#93A4B5;max-width:30ch;}
.socials{display:flex;gap:10px;margin-top:18px;}
.socials a{
  width:38px;height:38px;border-radius:10px;
  border:1px solid rgba(255,255,255,.14);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.socials a:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.34);transform:translateY(-2px);}
.socials svg{width:17px;height:17px;stroke:#B9C6D4;fill:none;}
.socials a:hover svg{stroke:#fff;}
.footer-col h4{
  font-size:13px;font-weight:600;letter-spacing:.12em;
  color:#fff;margin-bottom:16px;line-height:1.5;
}
.footer-col ul{display:flex;flex-direction:column;gap:9px;}
.footer-col a{font-size:14px;color:#B9C6D4;line-height:1.8;display:inline-block;transition:color .2s ease,transform .2s ease;}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-col p{font-size:14px;color:#93A4B5;line-height:1.85;margin-bottom:6px;}
.footer-sub form{display:flex;flex-direction:column;gap:10px;}
.footer-sub input[type="email"]{
  width:100%;height:46px;padding:0 14px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  color:#fff;font-size:14px;transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-sub input::placeholder{color:#8395a7;}
.footer-sub input:focus{
  outline:none;border-color:#8fb6da;box-shadow:0 0 0 3px rgba(143,182,218,.18);
}
.footer-sub button{
  height:44px;border-radius:var(--r-sm);border:none;
  background:var(--accent);color:#fff;font-size:15px;font-weight:600;
  transition:background .2s ease,transform .2s ease;
}
.footer-sub button:hover{background:var(--accent-deep);transform:translateY(-1px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0 28px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:#8294a6;
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:20px;}
.footer-bottom a{color:#8294a6;font-size:13px;}
.footer-bottom a:hover{color:#fff;}

/* ===== Responsive ===== */
@media screen and (max-width:1199px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;row-gap:36px;}
}
@media screen and (max-width:991px){
  .wrap{padding:0 24px;}
  .header-inner{min-height:68px;gap:16px;}
  .nav-links{gap:22px;}
  .nav-links a{font-size:14px;}
  .page-head-inner{grid-template-columns:1fr;gap:var(--sp-6);}
  .head-figure{aspect-ratio:16/9;}
  .help-layout{grid-template-columns:1fr;}
  .side{position:static;}
  .steps-grid{grid-template-columns:1fr;gap:var(--sp-4);}
  .cta-band{padding:44px;flex-direction:column;align-items:flex-start;}
  .section{padding:72px 0;}
}
@media screen and (max-width:767px){
  .menu-toggle{display:inline-flex;}
  .header-actions .btn{display:none;}
  .nav-wrap{
    position:fixed;inset:0;z-index:150;
    background:#fff;
    padding:0;
    display:none;
    overflow-y:auto;
  }
  body.menu-open .nav-wrap{display:block;}
  body.menu-open{overflow:hidden;}
  .nav-wrap .nav-top{
    display:flex;align-items:center;justify-content:space-between;
    padding:20px 20px;border-bottom:1px solid var(--line);
  }
  .nav-wrap .nav-close{
    width:44px;height:44px;border:1px solid var(--line-soft);background:#fff;
    border-radius:var(--r-sm);font-size:20px;color:var(--ink);line-height:1;
  }
  .nav-links{
    flex-direction:column;align-items:stretch;gap:0;
    padding:8px 20px 28px;
  }
  .nav-links li{border-bottom:1px solid var(--line);}
  .nav-links a{
    display:flex;align-items:center;justify-content:space-between;
    padding:17px 0;font-size:18px;font-weight:500;color:var(--brand-deep);
    min-height:56px;
  }
  .nav-links a::after{display:none;}
  .nav-links a::before{display:none;}
  .nav-links a::marker{content:none;}
  .nav-links a.is-active{color:var(--brand-deep);font-weight:700;}
  .nav-links a::after{display:none;}
  .nav-links li a::before{display:none;}
  .nav-links a .chev{font-size:13px;color:#9AA9B8;}
  .nav-foot{
    padding:20px;border-top:1px solid var(--line);
    font-size:13px;color:var(--meta);line-height:1.8;
  }
  .nav-foot strong{color:var(--ink);font-weight:600;}
  .notice-inner{font-size:13px;padding:10px 0;align-items:flex-start;}
  .page-head{padding:var(--sp-4) 0 var(--sp-6);}
  .head-metrics{gap:20px;}
  .cta-band{padding:32px 24px;border-radius:18px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .section{padding:56px 0;}
  .faq-item summary{font-size:15px;padding:17px;}
  .faq-body{padding:0 17px 17px;}
}
@media screen and (max-width:575px){
  .wrap{padding:0 20px;}
  .footer-grid{grid-template-columns:1fr;}
  .brand{font-size:17px;}
  .head-metrics strong{font-size:18px;}
  .side-card{padding:18px;}
  .crumbs{font-size:12px;padding-top:18px;}
}

/* roulang page: category5 */
:root{
  --ink:#16202B;
  --ink-2:#3D4C5C;
  --meta:#6B7A8C;
  --brand:#2B5C8A;
  --brand-deep:#1E4166;
  --brand-soft:#DCE8F3;
  --accent:#E4763A;
  --accent-deep:#D2662C;
  --accent-soft:#FBE7DB;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --surface-2:#EEF3F9;
  --line:#E3E9F1;
  --line-2:#DCE5EF;
  --footer:#14212E;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-pill:999px;
  --sh-1:0 2px 6px rgba(22,32,43,.05), 0 12px 28px -12px rgba(22,32,43,.10);
  --sh-2:0 6px 16px rgba(22,32,43,.08), 0 24px 48px -16px rgba(22,32,43,.16);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Inter", Helvetica, Arial, sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-deep);}
p{margin:0 0 18px;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--ink);}
button{font-family:inherit;}
input{font-family:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:3px solid rgba(43,92,138,.25);
  outline-offset:2px;
  border-radius:6px;
}

.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.97);
  -webkit-backdrop-filter:saturate(150%) blur(8px);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.site-header.is-stuck{
  border-bottom-color:var(--line);
  box-shadow:0 10px 24px -18px rgba(22,32,43,.45);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:76px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:18px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--ink);
  text-decoration:none;
  white-space:nowrap;
}
.brand em{font-style:normal;color:var(--brand);}
.brand-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  display:inline-block;
  flex:0 0 auto;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:32px;
  list-style:none;
  margin:0;
  padding:0;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  text-decoration:none;
  transition:color .18s ease;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;
  border-radius:2px;
  background:var(--brand);
  transition:width .2s ease;
}
.nav-links a:hover{color:var(--brand-deep);}
.nav-links a:hover::after{width:100%;}
.nav-links a.is-active{color:var(--brand-deep);font-weight:600;}
.nav-links a.is-active::after{width:100%;}
.nav-links a.is-active::before{
  content:"";
  position:absolute;
  left:-11px;
  top:50%;
  transform:translateY(-50%);
  width:5px;height:5px;
  border-radius:50%;
  background:var(--accent);
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line-2);
  border-radius:var(--r-sm);
  background:#fff;
  position:relative;
  cursor:pointer;
  padding:0;
}
.nav-toggle span{
  position:absolute;
  left:13px;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--ink);
  transition:transform .22s ease, opacity .22s ease;
}
.nav-toggle span:nth-child(1){top:18px;}
.nav-toggle span:nth-child(2){top:24px;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(3px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){transform:translateY(-3px) rotate(-45deg);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  text-decoration:none;
  cursor:pointer;
  transition:transform .18s ease, background-color .18s ease, box-shadow .18s ease, border-color .18s ease, color .18s ease;
}
.btn-primary{background:var(--brand-deep);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--sh-1);}
.btn-accent:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost{background:#fff;border-color:var(--line-2);color:var(--brand-deep);}
.btn-ghost:hover{background:var(--surface-2);border-color:var(--brand);color:var(--brand-deep);}
.btn-text{
  background:none;
  border:0;
  padding:0;
  min-height:44px;
  color:var(--brand);
  font-weight:600;
}
.btn-text .arrow{display:inline-block;transition:transform .18s ease;}
.btn-text:hover{color:var(--brand-deep);}
.btn-text:hover .arrow{transform:translateX(4px);}

/* ---------- page head ---------- */
.page-head{
  position:relative;
  overflow:hidden;
  padding:40px 0 56px;
  background:var(--bg);
}
.page-head::before{
  content:"";
  position:absolute;
  right:-12%;
  top:-30%;
  width:72%;
  height:180%;
  background:linear-gradient(115deg, rgba(220,232,243,0) 38%, rgba(220,232,243,.85) 100%);
  transform:skewY(-7deg);
  pointer-events:none;
}
.page-head .wrap{position:relative;z-index:1;}
.crumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--meta);
  margin-bottom:20px;
}
.crumb a{color:var(--meta);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#C3CEDA;}
.crumb .current{color:var(--ink);font-weight:600;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin:0 0 16px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:var(--brand-soft);
  color:var(--brand-deep);
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
}
.page-head h1{
  font-size:clamp(30px,4vw,42px);
  line-height:1.16;
  max-width:860px;
  margin-bottom:20px;
}
.page-head .lede{
  max-width:700px;
  font-size:17px;
  line-height:1.85;
  color:var(--ink-2);
  margin:0;
}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-alt{background:var(--surface-2);}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{
  font-size:clamp(24px,3vw,32px);
  margin-bottom:14px;
}
.section-head p{color:var(--ink-2);font-size:16px;margin:0;}

/* ---------- split ---------- */
.split{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:56px;
  align-items:start;
}
.split-body h2{
  font-size:clamp(24px,3vw,32px);
  margin-bottom:20px;
}
.split-body h3{
  font-size:19px;
  margin:28px 0 12px;
  padding-left:12px;
  position:relative;
}
.split-body h3::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:3px;border-radius:3px;
  background:var(--brand);
}
.split-body p{color:var(--ink-2);margin:0 0 16px;}
.split-figure{
  margin:0;
  border-radius:var(--r-lg);
  overflow:hidden;
  background:var(--surface);
  box-shadow:var(--sh-1);
  border:1px solid var(--line);
}
.split-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.split-figure figcaption{
  font-size:13px;
  color:var(--meta);
  padding:12px 16px;
  border-top:1px solid var(--line);
  background:#fff;
}
.check-list{margin:24px 0 0;}
.check-list li{
  position:relative;
  padding:14px 0 14px 30px;
  border-top:1px solid var(--line);
  font-size:15px;
  color:var(--ink-2);
}
.check-list li:last-child{border-bottom:1px solid var(--line);}
.check-list li::before{
  content:"";
  position:absolute;
  left:6px;top:22px;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--accent);
}
.check-list strong{color:var(--ink);font-weight:600;}

/* ---------- timeline ---------- */
.timeline{
  position:relative;
  display:grid;
  grid-template-columns:repeat(5,minmax(0,1fr));
  gap:0;
  margin-top:8px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:0;right:0;top:9px;
  height:1px;
  background:var(--line-2);
}
.tl-item{
  position:relative;
  padding:0 20px 0 0;
}
.tl-item::before{
  content:"";
  position:absolute;
  top:4px;left:0;
  width:11px;height:11px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 0 4px var(--surface-2);
}
.tl-step{
  display:block;
  margin-top:24px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--brand);
}
.tl-item h3{
  font-size:17px;
  margin:6px 0 8px;
}
.tl-item p{
  font-size:14px;
  line-height:1.8;
  color:var(--meta);
  margin:0;
}

/* ---------- metrics ---------- */
.metrics{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:40px 8px;
  box-shadow:var(--sh-1);
}
.metric{
  text-align:center;
  padding:0 24px;
  border-left:1px solid var(--line);
}
.metric:first-child{border-left:0;}
.metric b{
  display:block;
  font-size:clamp(26px,3vw,34px);
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--brand-deep);
  line-height:1.1;
}
.metric span{
  display:block;
  margin-top:8px;
  font-size:13px;
  color:var(--meta);
}

/* ---------- work grid ---------- */
.grid-x.g-gap{gap:24px;margin:0;}
.grid-x.g-gap > .cell{
  flex:1 1 240px;
  width:auto;
  min-width:0;
}
.work-item{
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px 24px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease, box-shadow .18s ease;
}
.work-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.work-no{
  display:block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--brand);
  margin-bottom:12px;
}
.work-item h3{
  font-size:18px;
  margin-bottom:10px;
}
.work-item p{
  font-size:15px;
  line-height:1.8;
  color:var(--ink-2);
  margin:0;
}

/* ---------- faq ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:48px;
  align-items:start;
}
.faq-side h2{font-size:clamp(24px,3vw,32px);margin-bottom:14px;}
.faq-side p{color:var(--ink-2);font-size:15px;margin:0 0 20px;max-width:320px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:12px;
  padding:0 20px;
  margin-bottom:12px;
  transition:background-color .18s ease, border-color .18s ease;
}
.faq-item:hover{background:var(--bg);border-color:var(--line-2);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:64px;
  padding:18px 0;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::marker{content:"";}
.faq-icon{
  flex:0 0 auto;
  width:22px;height:22px;
  border-radius:50%;
  border:1px solid var(--line-2);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--brand);
  font-size:15px;
  line-height:1;
  transition:background-color .18s ease, color .18s ease, border-color .18s ease;
}
.faq-icon::before{content:"+";}
.faq-item[open] .faq-icon{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;}
.faq-item[open] .faq-icon::before{content:"−";}
.faq-body{
  padding:0 0 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
}
.faq-body p:last-child{margin-bottom:0;}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--brand-deep);
  border-radius:24px;
  padding:64px;
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:40px;
  align-items:center;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-120px;top:-140px;
  width:420px;height:420px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.10);
  box-shadow:0 0 0 44px rgba(255,255,255,.05), 0 0 0 88px rgba(255,255,255,.035);
  pointer-events:none;
}
.cta-band h2{
  color:#fff;
  font-size:clamp(22px,2.6vw,28px);
  margin-bottom:14px;
  position:relative;
  z-index:1;
}
.cta-band p{
  color:rgba(255,255,255,.78);
  font-size:15px;
  margin:0;
  max-width:520px;
  position:relative;
  z-index:1;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:flex-end;
  position:relative;
  z-index:1;
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--footer);
  color:#B9C6D4;
  padding:72px 0 0;
  margin-top:96px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1.3fr 1.4fr;
  gap:40px;
  padding-bottom:56px;
}
.footer-brand .brand{color:#fff;margin-bottom:16px;}
.footer-brand .brand em{color:#9FC3E4;}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  color:#9AAABB;
  margin:0 0 20px;
  max-width:280px;
}
.socials{display:flex;gap:10px;}
.socials a{
  width:38px;height:38px;
  border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.14);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:#B9C6D4;
  transition:background-color .18s ease, color .18s ease, border-color .18s ease;
}
.socials a:hover{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.3);}
.socials svg{width:18px;height:18px;stroke:currentColor;fill:none;}
.footer-col h4{
  font-size:13px;
  font-weight:600;
  letter-spacing:.12em;
  color:#fff;
  margin-bottom:18px;
  text-transform:uppercase;
}
.footer-col ul li{margin-bottom:2px;}
.footer-col a{
  display:inline-block;
  font-size:14px;
  line-height:1.8;
  color:#B9C6D4;
  padding:3px 0;
  transition:color .18s ease, transform .18s ease;
}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-col p{
  font-size:14px;
  line-height:1.8;
  color:#9AAABB;
  margin:0 0 8px;
}
.footer-sub form{display:flex;gap:8px;margin-top:4px;}
.footer-sub input{
  flex:1 1 auto;
  min-width:0;
  height:44px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);
  color:#fff;
  padding:0 14px;
  font-size:14px;
}
.footer-sub input::placeholder{color:#8395A8;}
.footer-sub input:focus{
  outline:none;
  border-color:var(--brand-soft);
  box-shadow:0 0 0 3px rgba(220,232,243,.18);
}
.footer-sub button{
  height:44px;
  padding:0 18px;
  border:0;
  border-radius:var(--r-sm);
  background:var(--accent);
  color:#fff;
  font-size:14px;
  font-weight:600;
  cursor:pointer;
  transition:background-color .18s ease, transform .18s ease;
}
.footer-sub button:hover{background:var(--accent-deep);transform:translateY(-1px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:#8395A8;
  flex-wrap:wrap;
}
.footer-bottom .links{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom .links a{color:#8395A8;}
.footer-bottom .links a:hover{color:#fff;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .wrap{padding:0 28px;}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr;gap:36px;}
}
@media (max-width:991px){
  .wrap{padding:0 24px;}
  .site-header{background:#fff;-webkit-backdrop-filter:none;backdrop-filter:none;}
  .nav-toggle{display:inline-block;position:relative;z-index:90;}
  .site-header nav[aria-label="主导航"]{
    position:fixed;
    inset:0;
    z-index:80;
    display:none;
    flex-direction:column;
    background:#fff;
    padding:92px 24px 32px;
    overflow-y:auto;
  }
  .site-header nav[aria-label="主导航"].is-open{display:flex;}
  .site-header nav[aria-label="主导航"].is-open::before{
    content:"hth官方网";
    position:absolute;
    top:26px;left:24px;
    font-size:18px;
    font-weight:700;
    letter-spacing:.02em;
    color:var(--ink);
  }
  .site-header nav[aria-label="主导航"].is-open::after{
    content:"service@pangmenzd.com";
    margin-top:28px;
    padding-top:20px;
    border-top:1px solid var(--line);
    font-size:14px;
    color:var(--meta);
  }
  .nav-links{flex-direction:column;align-items:stretch;gap:0;width:100%;}
  .nav-links li{border-bottom:1px solid var(--line);}
  .nav-links a{
    display:flex;
    align-items:center;
    justify-content:space-between;
    min-height:56px;
    font-size:18px;
    font-weight:500;
    color:var(--brand-deep);
    padding:0;
  }
  .nav-links a::after{display:none;}
  .nav-links a::before{display:none;}
  .nav-links a:hover,.nav-links a.is-active{color:var(--brand-deep);}
  .nav-links a.is-active{font-weight:600;}
  .nav-links a::marker{content:"";}
  .nav-links li a::after{display:none;}
  .nav-links a[data-slug]::after{
    content:"›";
    position:static;
    width:auto;height:auto;
    background:none;
    font-size:20px;
    color:#B7C4D2;
    line-height:1;
  }
  body.nav-open{overflow:hidden;}

  .section{padding:72px 0;}
  .split{grid-template-columns:1fr;gap:36px;}
  .split-figure{order:-1;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .faq-side p{max-width:none;}
  .cta-band{
    grid-template-columns:1fr;
    padding:48px 36px;
    text-align:center;
  }
  .cta-actions{justify-content:center;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-sub{grid-column:1 / -1;}
}
@media (max-width:767px){
  .page-head{padding:28px 0 40px;}
  .section{padding:56px 0;}
  .timeline{grid-template-columns:1fr;gap:26px;}
  .timeline::before{left:5px;right:auto;top:6px;bottom:6px;width:1px;height:auto;}
  .tl-item{padding:0 0 0 28px;}
  .tl-item::before{top:6px;left:0;}
  .tl-step{margin-top:0;}
  .metrics{grid-template-columns:1fr;padding:8px;gap:0;}
  .metric{
    border-left:0;
    border-top:1px solid var(--line);
    padding:24px 16px;
  }
  .metric:first-child{border-top:0;}
  .cta-band{padding:40px 24px;border-radius:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575px){
  .wrap{padding:0 20px;}
  .grid-x.g-gap > .cell{flex:1 1 100%;}
  .split-figure img{aspect-ratio:16/10;}
  .footer-sub form{flex-wrap:wrap;}
  .footer-sub input{flex:1 1 100%;}
  .footer-sub button{flex:1 1 100%;}
  .cta-actions .btn{width:100%;}
}