/* roulang page: index */
:root{
  --c-primary:#14453C;
  --c-primary-deep:#0C2E28;
  --c-accent:#C9662F;
  --c-accent-soft:#F3E2D6;
  --c-ink:#10201D;
  --c-muted:#6E7A76;
  --c-bg:#FAF8F4;
  --c-surface:#FFFFFF;
  --c-surface-alt:#F1EEE7;
  --c-line:#E2DDD2;
  --c-dark:#0E1E1B;
  --c-teal-soft:#DDE9E4;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,32,29,.05);
  --sh-2:0 18px 40px rgba(16,32,29,.10);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --nav-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body.site{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;line-height:1.28;letter-spacing:-.02em;margin:0;color:var(--c-ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:112px 0;position:relative;scroll-margin-top:88px}
.section--tight{padding:88px 0}
.section--alt{background:var(--c-surface-alt)}
.section--dark{background:var(--c-dark);color:#EAF2EF}
.section--dark h2,.section--dark h3{color:#FFFFFF}

/* ---------- 抬头结构 ---------- */
.sec-head{max-width:760px;margin-bottom:52px}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--c-primary);font-weight:600;margin-bottom:16px;
}
.sec-tag::before{content:"";width:22px;height:2px;background:var(--c-accent);display:block}
.sec-head h2{font-size:clamp(26px,3.1vw,38px)}
.sec-head p{margin-top:16px;color:var(--c-muted);font-size:16.5px;line-height:1.9;max-width:680px}
.section--dark .sec-head p{color:#A8BAB4}
.section--dark .sec-tag{color:#8FD0BE}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
  white-space:nowrap;min-width:44px;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(20,69,60,.22)}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);background:var(--c-primary-deep)}
.btn-outline{border:1px solid var(--c-primary);color:var(--c-primary);background:transparent}
.btn-outline:hover{background:var(--c-teal-soft);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{border:1px solid rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sand{background:var(--c-accent);color:#fff}
.btn-sand:hover{background:#B05526;transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed}

/* ---------- 徽章/标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;
  border-radius:var(--r-pill);font-size:12px;letter-spacing:.08em;
  background:var(--c-teal-soft);color:var(--c-primary);font-weight:600;
}
.badge--sand{background:var(--c-accent-soft);color:#8A4318}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:var(--nav-h);
  background:transparent;
  transition:background-color .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{
  background:rgba(250,248,244,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--c-line);
  box-shadow:0 4px 20px rgba(16,32,29,.06);
}
.nav-inner{height:var(--nav-h);display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;height:44px}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--c-primary);color:#EAF3F0;display:grid;place-items:center;flex:0 0 auto}
.brand-mark svg{width:20px;height:20px}
.brand-text{font-family:var(--serif);font-size:17.5px;font-weight:700;letter-spacing:.01em;color:var(--c-ink);white-space:nowrap}
.site-header.is-transparent .brand-text{color:#fff}
.site-header.is-transparent .brand-mark{background:rgba(255,255,255,.16);color:#fff}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:12px;flex:1 1 auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  height:44px;padding:0 12px;font-size:15px;font-weight:500;color:var(--c-ink);
  border-radius:var(--r-sm);transition:color .18s ease-out;
}
.site-header.is-transparent .nav-link{color:rgba(255,255,255,.9)}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:8px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease-out;
}
.site-header.is-transparent .nav-link::after{background:#fff}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link:hover{color:var(--c-primary)}
.site-header.is-transparent .nav-link:hover{color:#fff}
.nav-pill{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:var(--r-sm);
  background:var(--c-accent-soft);color:var(--c-primary);font-size:14.5px;font-weight:600;
  transition:background-color .18s ease-out,transform .18s ease-out;
}
.nav-pill:hover{background:#EAD3C2;transform:translateY(-1px)}
.nav-pill.is-active{background:var(--c-primary);color:#fff}
.nav-drop svg{width:12px;height:12px;transition:transform .2s ease-out}
.nav-drop:hover svg{transform:translateY(2px)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.burger{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--c-line);align-items:center;justify-content:center;
}
.site-header.is-transparent .burger{border-color:rgba(255,255,255,.4)}
.burger span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.site-header.is-transparent .burger{color:#fff}

.drawer{
  position:fixed;inset:0;z-index:100;background:var(--c-bg);
  transform:translateX(100%);transition:transform .28s cubic-bezier(.22,.61,.36,1);
  display:flex;flex-direction:column;padding:20px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:52px}
.drawer-close{width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--c-line);display:grid;place-items:center;font-size:22px;line-height:1;color:var(--c-ink)}
.drawer-nav{margin-top:24px;display:flex;flex-direction:column;gap:4px}
.drawer-nav a{padding:14px 4px;font-size:17px;font-weight:600;border-bottom:1px solid var(--c-line)}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:24px}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:660px;display:flex;align-items:center;
  padding:calc(var(--nav-h) + 72px) 0 88px;overflow:hidden;
  background:var(--c-primary-deep);
}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  transform:scale(1.02);
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(12,46,40,.94) 0%,rgba(12,46,40,.82) 46%,rgba(12,46,40,.62) 100%);
}
.hero-grid-lines{
  position:absolute;inset:0;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.4) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.4) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse at 30% 40%,#000 20%,transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse at 30% 40%,#000 20%,transparent 72%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;width:100%}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;height:32px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  color:#CFE4DD;font-size:12px;letter-spacing:.14em;font-weight:600;margin-bottom:22px;
}
.hero h1{
  color:#fff;font-size:clamp(32px,4.6vw,56px);line-height:1.22;letter-spacing:-.02em;max-width:15em;
}
.hero h1 em{font-style:normal;color:#F0B78E}
.hero-sub{margin-top:22px;color:#C7DAD3;font-size:clamp(16px,1.5vw,18px);line-height:1.85;max-width:34em}
.hero-actions{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px}
.trust-bar{margin-top:38px;display:flex;flex-wrap:wrap;gap:0;align-items:center}
.trust-bar li{
  position:relative;padding:0 20px;font-size:14px;color:#B6CCC5;font-weight:500;
}
.trust-bar li:first-child{padding-left:0}
.trust-bar li+li::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:1px;height:14px;background:rgba(255,255,255,.26);
}
.hero-media{position:relative}
.window-card{
  background:var(--c-surface);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:0 30px 70px rgba(0,0,0,.34);border:1px solid rgba(255,255,255,.18);
}
.window-bar{height:34px;display:flex;align-items:center;gap:7px;padding:0 14px;background:var(--c-surface-alt);border-bottom:1px solid var(--c-line)}
.window-bar span{width:9px;height:9px;border-radius:50%;background:var(--c-line)}
.window-bar span:first-child{background:#D9A98C}
.window-card img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* ---------- 卖点 Bento ---------- */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.bento-wide{
  grid-column:span 2;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:34px;display:flex;flex-direction:column;justify-content:space-between;
  box-shadow:var(--sh-1);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.bento-wide:hover,.bento-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(20,69,60,.35)}
.bento-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:30px;display:flex;flex-direction:column;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.bento-wide h3{font-size:clamp(21px,2.2vw,27px);max-width:16em}
.bento-card h3{font-size:20px;margin-bottom:10px}
.bento-wide p,.bento-card p{color:var(--c-muted);font-size:15.5px;line-height:1.85}
.bento-figure{margin-top:28px;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--c-line)}
.bento-figure img{width:100%;aspect-ratio:16/7;object-fit:cover;transition:transform .35s ease-out}
.bento-wide:hover .bento-figure img{transform:scale(1.03)}
.bento-ico{width:42px;height:42px;border-radius:12px;background:var(--c-teal-soft);color:var(--c-primary);display:grid;place-items:center;margin-bottom:18px}
.bento-ico svg{width:20px;height:20px}
.bento-num{font-family:var(--serif);font-size:13px;letter-spacing:.16em;color:var(--c-accent);font-weight:700;margin-bottom:12px}

/* ---------- 演示区 ---------- */
.demo-wrap{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:center}
.steps{display:flex;flex-direction:column;gap:26px;margin-top:34px}
.step{display:grid;grid-template-columns:52px 1fr;gap:18px;align-items:start}
.step-num{
  font-family:var(--serif);font-size:19px;font-weight:700;color:var(--c-primary);
  width:52px;height:52px;border-radius:14px;border:1px solid var(--c-line);
  display:grid;place-items:center;background:var(--c-surface);
}
.step h3{font-size:19px;margin-bottom:6px}
.step p{color:var(--c-muted);font-size:15.5px;line-height:1.8}
.demo-visual{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);background:var(--c-surface);box-shadow:var(--sh-2)}
.demo-visual img{width:100%;aspect-ratio:16/11;object-fit:cover}

/* ---------- 证据区 ---------- */
.metric-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;background:var(--c-surface);
}
.metric{padding:32px 26px;border-right:1px solid var(--c-line)}
.metric:last-child{border-right:0}
.metric b{display:block;font-family:var(--serif);font-size:clamp(28px,3vw,38px);color:var(--c-primary);line-height:1.1}
.metric span{display:block;margin-top:10px;font-size:14px;color:var(--c-muted)}
.qual-line{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px}
.quotes{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:56px}
.quote{
  background:var(--c-surface);border:1px solid var(--c-line);border-left:3px solid var(--c-primary);
  border-radius:var(--r-md);padding:28px;
}
.quote p{font-family:var(--serif);font-size:18px;line-height:1.75;color:var(--c-ink)}
.quote footer{margin-top:16px;font-size:13.5px;color:var(--c-muted);letter-spacing:.02em}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.price-card{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:32px 28px;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(20,69,60,.32)}
.price-card.is-featured{border:1.5px solid var(--c-primary);transform:translateY(-12px);box-shadow:var(--sh-2)}
.price-card.is-featured:hover{transform:translateY(-16px)}
.price-flag{position:absolute;top:-13px;right:24px}
.price-card h3{font-size:20px}
.price-amount{margin-top:18px;font-family:var(--serif);font-size:34px;color:var(--c-primary);line-height:1.1}
.price-amount small{font-size:14px;font-family:var(--sans);color:var(--c-muted);font-weight:400;margin-left:6px}
.price-desc{margin-top:12px;color:var(--c-muted);font-size:15px;line-height:1.8}
.price-list{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.price-list li{position:relative;padding-left:20px;font-size:15px;color:var(--c-ink)}
.price-list li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;
  background:var(--c-accent);border-radius:2px;
}
.price-card .btn{margin-top:28px;width:100%}
.compare{margin-top:64px;border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;background:var(--c-surface)}
.compare table{width:100%;border-collapse:collapse;font-size:15px}
.compare th,.compare td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--c-line)}
.compare thead th{background:var(--c-surface-alt);font-size:13px;letter-spacing:.08em;color:var(--c-primary);font-weight:700;font-family:var(--sans)}
.compare tbody tr:last-child td{border-bottom:0}
.compare tbody tr:nth-child(even){background:#FBF9F5}
.compare td:first-child{color:var(--c-muted)}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(20,69,60,.35)}
.news-card--lead{grid-column:span 3;flex-direction:row}
.news-thumb{display:block;overflow:hidden;background:var(--c-surface-alt)}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease-out}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-card--lead .news-thumb{flex:0 0 46%;max-width:46%}
.news-card--lead .news-thumb img{height:100%;aspect-ratio:auto;min-height:300px}
.news-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.news-card--lead .news-body{padding:36px;justify-content:center}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--c-muted)}
.news-body h3{font-size:19px;line-height:1.5;letter-spacing:-.01em}
.news-card--lead .news-body h3{font-size:clamp(22px,2.5vw,30px)}
.news-body h3 a:hover{color:var(--c-primary)}
.news-body p{
  color:var(--c-muted);font-size:15px;line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card--lead .news-body p{-webkit-line-clamp:3;max-width:44em}
.news-more{margin-top:auto;font-size:14px;font-weight:600;color:var(--c-primary);letter-spacing:.02em}
.news-more:hover{color:var(--c-accent)}
.empty-state{
  border:1px dashed var(--c-line);border-radius:var(--r-lg);background:var(--c-surface);
  padding:64px 24px;text-align:center;color:var(--c-muted);
}
.empty-state p{font-size:16px;margin-bottom:20px}

/* ---------- FAQ ---------- */
.faq-list{max-width:840px;border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:20px;
  padding:26px 0;font-size:19px;font-weight:600;font-family:var(--serif);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-idx{font-family:var(--serif);font-size:13px;color:var(--c-accent);font-weight:700;letter-spacing:.1em;padding-top:6px;flex:0 0 auto}
.faq-q{flex:1 1 auto}
.faq-plus{
  flex:0 0 auto;width:26px;height:26px;position:relative;margin-top:4px;
  transition:transform .22s ease-out;
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;background:var(--c-muted);transition:background-color .22s ease-out;
}
.faq-plus::before{left:0;top:12px;width:26px;height:1.5px}
.faq-plus::after{top:0;left:12px;width:1.5px;height:26px}
.faq-item[open] .faq-plus{transform:rotate(45deg)}
.faq-item[open] .faq-plus::before,.faq-item[open] .faq-plus::after{background:var(--c-primary)}
.faq-item[open] summary{color:var(--c-primary)}
.faq-answer{padding:0 0 28px 42px;color:var(--c-muted);font-size:16px;line-height:1.85;max-width:720px}

/* ---------- 末尾 CTA ---------- */
.cta-band{
  position:relative;background:var(--c-dark);color:#fff;overflow:hidden;
  padding:96px 0;scroll-margin-top:88px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;background-size:cover;background-position:center;opacity:.14;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr auto;gap:48px;align-items:center}
.cta-band h2{color:#fff;font-size:clamp(26px,3.2vw,40px);max-width:16em}
.cta-band p{margin-top:18px;color:#A8BAB4;max-width:34em;font-size:16.5px}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:stretch;min-width:230px}
.cta-contact{font-size:13.5px;color:#8FA7A1;text-align:center;letter-spacing:.02em}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-dark);color:#9DAFA9;padding:80px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);color:#fff}
.footer-brand p{margin-top:18px;font-size:14.5px;line-height:1.85;max-width:26em;color:#9DAFA9}
.footer-contact{margin-top:20px;font-size:14px;color:#C3D3CE}
.footer-contact span{display:block;margin-bottom:6px}
.footer-col h4{font-family:var(--sans);font-size:13px;letter-spacing:.14em;color:#DCE8E4;font-weight:700;margin-bottom:18px;text-transform:uppercase}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14.5px;color:#9DAFA9;transition:color .18s ease-out,transform .18s ease-out;display:inline-block}
.footer-col a:hover{color:var(--c-accent);transform:translateX(2px)}
.footer-bottom{
  margin-top:64px;border-top:1px solid rgba(255,255,255,.1);
  padding:26px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#7F938D;
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:32px;bottom:32px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 24px;
  border-radius:var(--r-pill);background:var(--c-primary);color:#fff;
  font-size:15px;font-weight:600;box-shadow:0 14px 32px rgba(12,46,40,.28);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .26s ease-out,transform .26s ease-out,background-color .18s ease-out;
}
.float-cta.is-on{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta:hover{background:var(--c-primary-deep)}
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:75;height:64px;
  background:rgba(250,248,244,.98);border-top:1px solid var(--c-line);
  padding:8px 16px;gap:10px;align-items:center;
  box-shadow:0 -6px 20px rgba(16,32,29,.06);
}
.mobile-bar .btn{flex:1 1 auto;height:46px}
.mobile-bar .bar-icon{
  flex:0 0 46px;height:46px;border-radius:var(--r-sm);border:1px solid var(--c-line);
  display:grid;place-items:center;color:var(--c-primary);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s cubic-bezier(.22,.61,.36,1),transform .5s cubic-bezier(.22,.61,.36,1)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none!important}
}

/* ---------- 断点 ---------- */
@media (max-width:1180px){
  .nav-links{gap:2px}
  .nav-link{padding:0 9px;font-size:14.5px}
  .nav-pill{padding:0 13px;font-size:14px}
}
@media (max-width:1023px){
  .nav-links,.nav-actions .btn-outline{display:none}
  .burger{display:inline-flex}
  .site-header{background:rgba(250,248,244,.96);border-bottom:1px solid var(--c-line)}
  .site-header .brand-text{color:var(--c-ink)}
  .site-header .brand-mark{background:var(--c-primary);color:#EAF3F0}
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .hero{min-height:auto;padding:calc(var(--nav-h) + 56px) 0 72px}
  .bento{grid-template-columns:1fr 1fr}
  .bento-wide{grid-column:span 2}
  .demo-wrap{grid-template-columns:1fr;gap:40px}
  .metric-band{grid-template-columns:1fr 1fr}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--c-line)}
  .price-grid{grid-template-columns:1fr}
  .price-card.is-featured{transform:none}
  .price-card.is-featured:hover{transform:translateY(-4px)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .cta-actions{flex-direction:row;min-width:0}
}
@media (max-width:767px){
  body.site{font-size:16px;padding-bottom:64px}
  .container{padding:0 20px}
  .section{padding:72px 0}
  .section--tight{padding:60px 0}
  .sec-head{margin-bottom:36px}
  .hero h1{font-size:clamp(28px,7.6vw,36px)}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 auto}
  .trust-bar{margin-top:28px}
  .trust-bar li{padding:0 14px;font-size:13.5px}
  .bento{grid-template-columns:1fr}
  .bento-wide{grid-column:span 1}
  .news-grid{grid-template-columns:1fr}
  .news-card--lead{grid-column:span 1;flex-direction:column}
  .news-card--lead .news-thumb{flex:none;max-width:100%}
  .news-card--lead .news-thumb img{min-height:0;aspect-ratio:16/9}
  .news-card--lead .news-body{padding:24px}
  .quotes{grid-template-columns:1fr}
  .metric-band{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid var(--c-line);padding:24px 20px}
  .metric:last-child{border-bottom:0}
  .faq-item summary{font-size:17px;gap:14px;padding:22px 0}
  .faq-answer{padding-left:0}
  .compare{overflow-x:auto}
  .compare table{min-width:560px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:span 2}
  .footer-bottom{flex-direction:column;gap:8px}
  .float-cta{display:none}
  .mobile-bar{display:flex}
  .cta-band{padding:68px 0}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
}
@media (max-width:420px){
  .footer-grid{grid-template-columns:1fr}
  .footer-brand{grid-column:span 1}
}

/* roulang page: article */
:root{
  --c-primary:#14453C;
  --c-primary-deep:#0C2E28;
  --c-accent:#C9662F;
  --c-accent-soft:#F3E2D6;
  --c-ink:#10201D;
  --c-muted:#6E7A76;
  --c-bg:#FAF8F4;
  --c-surface:#FFFFFF;
  --c-surface-alt:#F1EEE7;
  --c-line:#E2DDD2;
  --c-dark:#0E1E1B;
  --c-teal-soft:#DDE9E4;
  --radius-card:16px;
  --radius-card-lg:20px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(16,32,29,.05);
  --shadow-hover:0 18px 40px rgba(16,32,29,.10);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:700;line-height:1.28;letter-spacing:-.02em;margin:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
[data-anchor]{scroll-margin-top:88px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(250,248,244,.88);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-line);
  box-shadow:0 6px 18px rgba(16,32,29,.06);
}
.header-inner{height:72px;display:flex;align-items:center;gap:20px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-size:17px;font-weight:700;
  box-shadow:0 6px 14px rgba(20,69,60,.24);
}
.brand-text{font-size:18px;font-weight:600;letter-spacing:.01em;color:var(--c-ink);}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:4px;
  padding:9px 12px;font-size:15px;color:#2C3A36;border-radius:8px;
  transition:color .18s ease,background .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary);}
.nav-link svg{width:14px;height:14px;}
.nav-pill{
  display:inline-flex;align-items:center;
  padding:9px 16px;border-radius:999px;
  background:var(--c-accent-soft);color:var(--c-primary);
  font-size:15px;font-weight:600;
  transition:background .18s ease,transform .18s ease;
}
.nav-pill:hover{background:#EBD5C5;transform:translateY(-1px);}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;
  border:1px solid transparent;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 20px rgba(20,69,60,.20);}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{background:#fff;color:var(--c-primary);border-color:rgba(20,69,60,.35);}
.btn-outline:hover{background:var(--c-teal-soft);}
.btn-ghost-dark{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.35);}
.btn-ghost-dark:hover{background:rgba(255,255,255,.20);}
.btn:focus-visible,.nav-toggle:focus-visible,a:focus-visible,button:focus-visible{
  outline:2px solid var(--c-accent);outline-offset:2px;
}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--c-line);background:#fff;color:var(--c-ink);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle svg{width:20px;height:20px;}
.mobile-drawer{
  position:fixed;inset:0;z-index:80;background:var(--c-bg);
  transform:translateX(100%);transition:transform .28s cubic-bezier(.22,.61,.36,1);
  padding:24px;display:flex;flex-direction:column;gap:8px;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;
}
.mobile-drawer a.d-link{
  padding:14px 12px;border-radius:12px;font-size:17px;font-weight:600;
  border-bottom:1px solid var(--c-line);
}
.mobile-drawer a.d-link:hover{background:var(--c-surface-alt);}
.drawer-cta{margin-top:auto;display:flex;flex-direction:column;gap:10px;}

/* ---------- breadcrumb & hero ---------- */
.crumb{padding:28px 0 0;font-size:14px;color:var(--c-muted);display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumb a:hover{color:var(--c-primary);}
.crumb span.sep{color:#BFC6C2;}
.crumb .current{color:var(--c-ink);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-hero{padding:20px 0 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--c-primary);font-weight:700;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-accent);display:inline-block;}
.article-title{
  font-size:clamp(28px,4vw,40px);
  margin:14px 0 0;max-width:22ch;color:var(--c-ink);
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:18px;font-size:14px;color:var(--c-muted);
}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;font-size:12px;letter-spacing:.08em;font-weight:600;
}
.badge-teal{background:var(--c-teal-soft);color:var(--c-primary);}
.badge-sand{background:var(--c-accent-soft);color:#8A3F16;}
.article-cover{
  margin-top:32px;border-radius:var(--radius-card-lg);overflow:hidden;
  border:1px solid var(--c-line);box-shadow:var(--shadow-card);background:var(--c-surface-alt);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}

/* ---------- article layout ---------- */
.article-main{padding:56px 0 96px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;}
.article-body{
  max-width:760px;font-size:17.5px;line-height:1.95;color:#22312D;
}
.article-body p{margin:0 0 1.35em;}
.article-body h2{
  font-size:24px;margin:2em 0 .7em;padding-left:14px;position:relative;color:var(--c-ink);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;
  background:var(--c-primary);border-radius:2px;
}
.article-body h3{font-size:19px;margin:1.6em 0 .6em;color:var(--c-ink);}
.article-body a{color:var(--c-primary);border-bottom:2px solid rgba(20,69,60,.28);}
.article-body a:hover{border-bottom-color:var(--c-primary);}
.article-body ul,.article-body ol{margin:0 0 1.4em;}
.article-body li{position:relative;padding-left:20px;margin-bottom:10px;}
.article-body li::before{
  content:"";position:absolute;left:2px;top:.62em;width:7px;height:7px;
  background:var(--c-accent);border-radius:1px;
}
.article-body blockquote{
  margin:1.6em 0;padding:20px 22px;background:var(--c-accent-soft);
  border-left:3px solid var(--c-primary);border-radius:0 12px 12px 0;color:#2A3A35;
}
.article-body img{border-radius:12px;margin:1.6em auto;}
.article-body figure{margin:1.8em 0;}
.article-body figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:10px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15.5px;
  border:1px solid var(--c-line);border-radius:12px;overflow:hidden;
}
.article-body th{background:var(--c-surface-alt);text-align:left;font-weight:600;}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--c-line);}
.article-body tbody tr:nth-child(even){background:#FCFAF6;}
.article-body pre{
  background:var(--c-dark);color:#E6EFEC;padding:18px 20px;border-radius:12px;
  overflow-x:auto;font-size:14.5px;line-height:1.75;margin:1.6em 0;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;}
.article-body :not(pre) > code{
  background:var(--c-surface-alt);padding:2px 6px;border-radius:6px;font-size:15px;
}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:2.4em 0;}

/* sidebar */
.article-aside{display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
}
.side-card h3{font-size:16px;margin-bottom:14px;}
.side-card ul li{font-size:14.5px;color:var(--c-muted);padding:9px 0;border-bottom:1px dashed var(--c-line);}
.side-card ul li:last-child{border-bottom:0;}
.side-card ul li a:hover{color:var(--c-primary);}
.side-cta{
  background:var(--c-dark);color:#fff;border-radius:var(--radius-card);padding:24px;
  border:1px solid rgba(255,255,255,.08);
}
.side-cta h3{color:#fff;font-size:17px;margin-bottom:10px;}
.side-cta p{font-size:14px;color:rgba(255,255,255,.72);margin-bottom:16px;}

/* footer actions of article */
.article-foot{border-top:1px solid var(--c-line);margin-top:48px;padding-top:28px;display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  background:var(--c-surface-alt);border:1px solid var(--c-line);font-size:13px;color:#39473F;
}
.tag:hover{border-color:rgba(20,69,60,.35);color:var(--c-primary);}
.share-row{display:flex;gap:10px;}
.back-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--c-primary);margin-top:28px;}
.back-link:hover{color:var(--c-accent);}

/* empty state */
.empty-state{
  border:1px dashed var(--c-line);border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;background:var(--c-surface);
}
.empty-state p{color:var(--c-muted);margin-bottom:18px;}

/* ---------- related ---------- */
.section{padding:80px 0;}
.section-alt{background:var(--c-surface-alt);}
.section-head{max-width:680px;margin-bottom:36px;}
.section-head h2{font-size:clamp(24px,3vw,34px);margin-top:14px;}
.section-head p{color:var(--c-muted);margin-top:12px;font-size:16px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.rel-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  display:flex;flex-direction:column;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(20,69,60,.35);}
.rel-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease;}
.rel-card:hover img{transform:scale(1.03);}
.rel-thumb{overflow:hidden;background:var(--c-surface-alt);}
.rel-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.rel-body h3{font-size:18px;line-height:1.5;}
.rel-body p{font-size:14.5px;color:var(--c-muted);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-meta{margin-top:auto;font-size:13px;color:var(--c-muted);display:flex;justify-content:space-between;align-items:center;}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--c-dark);color:#fff;padding:88px 0;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;opacity:.30;
  background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  mix-blend-mode:luminosity;
}
.cta-inner{position:relative;z-index:2;max-width:720px;}
.cta-band h2{font-size:clamp(26px,3.4vw,38px);color:#fff;}
.cta-band p{color:rgba(255,255,255,.76);margin-top:14px;font-size:17px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.cta-points{display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;font-size:14px;color:rgba(255,255,255,.70);}
.cta-points span{display:inline-flex;align-items:center;gap:8px;}
.cta-points i{width:6px;height:6px;border-radius:2px;background:var(--c-accent);display:inline-block;}

/* ---------- footer ---------- */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.72);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{font-size:14.5px;line-height:1.9;margin-top:16px;max-width:34ch;}
.footer-quote{margin-top:18px;font-size:14px;color:rgba(255,255,255,.62);border-left:3px solid var(--c-accent);padding-left:12px;}
.footer-col h4{
  font-family:var(--font-sans);font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:rgba(255,255,255,.55);font-weight:600;margin-bottom:16px;
}
.footer-col li{margin-bottom:11px;font-size:14.5px;}
.footer-col a{transition:color .18s ease,transform .18s ease;display:inline-block;}
.footer-col a:hover{color:var(--c-accent);transform:translateX(2px);}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 30px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.55);
}

/* reveal */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.is-in{opacity:1;transform:none;transition:opacity .5s cubic-bezier(.22,.61,.36,1),transform .5s cubic-bezier(.22,.61,.36,1);}

@media (max-width:1024px){
  .nav-links{display:none;}
  .header-actions .btn-outline{display:none;}
  .nav-toggle{display:flex;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  body{font-size:16.5px;}
  .container{padding:0 20px;}
  .header-actions .btn-primary{display:none;}
  .section{padding:56px 0;}
  .article-main{padding:40px 0 64px;}
  .article-body{font-size:17px;}
  .cta-band{padding:64px 0;}
  .rel-grid{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:520px){
  .article-title{font-size:26px;}
  .footer-grid{grid-template-columns:1fr;}
  .article-foot{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --c-primary:#14453C;
  --c-primary-deep:#0C2E28;
  --c-accent:#C9662F;
  --c-accent-soft:#F3E2D6;
  --c-ink:#10201D;
  --c-muted:#6E7A76;
  --c-bg:#FAF8F4;
  --c-surface:#FFFFFF;
  --c-surface-alt:#F1EEE7;
  --c-line:#E2DDD2;
  --c-dark:#0E1E1B;
  --c-teal-soft:#DDE9E4;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(16,32,29,.05);
  --shadow-hover:0 18px 40px rgba(16,32,29,.10);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--c-bg);color:var(--c-ink);
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;line-height:1.9;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:600;letter-spacing:-.02em;line-height:1.28;margin:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:var(--c-accent-soft)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:104px 0;scroll-margin-top:88px}
.section-alt{background:var(--c-surface-alt)}
.section-tight{padding:72px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--c-primary);
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--c-accent)}
.section-title{font-size:clamp(26px,3.4vw,38px);margin-top:16px}
.section-lead{color:var(--c-muted);max-width:660px;margin-top:16px;font-size:16.5px;line-height:1.9}
.prose{max-width:760px}
.prose p + p{margin-top:20px}
.prose p{color:#2B3A36}

/* 按钮系统 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color .18s ease-out,transform .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.btn:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;color:var(--c-primary);border-color:rgba(20,69,60,.28)}
.btn-outline:hover{background:var(--c-teal-soft);border-color:rgba(20,69,60,.45)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost-dark{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.btn-ghost-dark:hover{background:rgba(255,255,255,.14)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;pointer-events:none}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:80;height:72px;display:flex;align-items:center;
  background:rgba(250,248,244,.9);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;transition:background-color .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--c-line);box-shadow:0 6px 20px rgba(16,32,29,.05)}
.header-inner{display:flex;align-items:center;gap:24px;width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:17.5px;color:var(--c-ink);flex:none}
.brand-mark{
  width:34px;height:34px;border-radius:9px;background:var(--c-primary);color:#fff;
  display:grid;place-items:center;font-family:var(--font-serif);font-size:16px;letter-spacing:0;
}
.brand-mark::after{content:"";position:absolute}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;padding:9px 10px;font-size:15px;color:#33403C;border-radius:8px;
  transition:color .18s ease;display:inline-flex;align-items:center;gap:6px;
}
.nav-link::after{
  content:"";position:absolute;left:10px;right:10px;bottom:3px;height:2px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease-out;
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-drop svg{width:14px;height:14px}
.nav-pill{
  padding:9px 15px;border-radius:999px;background:var(--c-accent-soft);color:var(--c-primary);
  font-size:14.5px;font-weight:600;transition:background-color .18s ease,color .18s ease,transform .18s ease;
}
.nav-pill:hover{background:#EAD3C2}
.nav-pill.is-active{background:var(--c-primary);color:#fff}
.header-actions{display:flex;align-items:center;gap:10px;flex:none}
.menu-btn{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;margin-left:auto;
}
.menu-btn span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;position:relative}
.menu-btn span::before,.menu-btn span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px;
}
.menu-btn span::before{top:-6px}
.menu-btn span::after{top:6px}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,30,27,.45);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);background:#fff;z-index:100;
  transform:translateX(105%);transition:transform .3s cubic-bezier(.22,.61,.36,1);
  display:flex;flex-direction:column;padding:22px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-close{
  align-self:flex-end;width:44px;height:44px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;cursor:pointer;font-size:20px;line-height:1;color:var(--c-muted);
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-top:18px}
.drawer-nav a{padding:13px 12px;border-radius:10px;font-size:16px;color:var(--c-ink)}
.drawer-nav a:hover{background:var(--c-surface-alt)}
.drawer-nav a.is-active{background:var(--c-teal-soft);color:var(--c-primary);font-weight:600}
.drawer-cta{margin-top:22px;display:flex;flex-direction:column;gap:10px}

/* 窄幅 banner */
.page-banner{
  position:relative;min-height:300px;display:flex;align-items:flex-end;
  background:var(--c-primary-deep);color:#fff;overflow:hidden;
}
.banner-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;opacity:.5;
}
.banner-overlay{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(12,46,40,.94) 0%,rgba(12,46,40,.7) 55%,rgba(12,46,40,.5) 100%);
}
.banner-inner{position:relative;padding:72px 0 52px;width:100%}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:rgba(255,255,255,.72);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{color:rgba(255,255,255,.82);transition:color .18s ease}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.banner-title{font-size:clamp(28px,4.2vw,44px);color:#fff;max-width:820px}
.banner-sub{max-width:660px;margin-top:16px;color:rgba(255,255,255,.82);font-size:16.5px}

/* 左图右要点 */
.split{display:grid;grid-template-columns:5fr 6fr;gap:60px;align-items:start}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-lg);box-shadow:0 24px 60px rgba(16,32,29,.14)}
.split-media figcaption{margin-top:14px;font-size:13.5px;color:var(--c-muted)}
.num-list{display:grid;gap:6px;margin-top:26px}
.num-list li{display:flex;gap:18px;padding:18px 0;border-bottom:1px solid var(--c-line)}
.num-list li:last-child{border-bottom:0;padding-bottom:0}
.num{
  font-family:var(--font-serif);font-size:19px;color:var(--c-accent);
  line-height:1.6;min-width:34px;flex:none;
}
.num-list h3{font-size:19px;margin-bottom:6px}
.num-list p{color:var(--c-muted);font-size:15.5px;line-height:1.85}

/* 数据带 */
.stat-band{
  display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
  padding:30px 0;margin-top:52px;
}
.stat-band dt{font-family:var(--font-serif);font-size:26px;color:var(--c-primary);letter-spacing:-.01em}
.stat-band dd{margin:6px 0 0;font-size:14.5px;color:var(--c-muted);line-height:1.7}

/* 能力卡 */
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:52px}
.cap-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.cap-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(20,69,60,.35)}
.cap-media{aspect-ratio:16/9;overflow:hidden;background:var(--c-surface-alt)}
.cap-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease-out}
.cap-card:hover .cap-media img{transform:scale(1.03)}
.cap-body{padding:26px 26px 24px}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:999px;
  font-size:12px;letter-spacing:.08em;background:var(--c-teal-soft);color:var(--c-primary);font-weight:600;
}
.badge-sand{background:var(--c-accent-soft);color:#8E4520}
.cap-body h3{font-size:21px;margin:14px 0 10px}
.cap-body p{color:var(--c-muted);font-size:15.5px;line-height:1.85}

/* 流程条 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:52px;position:relative}
.step{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);padding:26px 24px;box-shadow:var(--shadow-card);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(20,69,60,.3)}
.step-idx{
  display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;
  background:var(--c-primary);color:#fff;font-family:var(--font-serif);font-size:15px;
}
.step h3{font-size:18px;margin:16px 0 8px}
.step p{font-size:14.5px;color:var(--c-muted);line-height:1.8}

/* FAQ */
.faq-list{margin-top:36px;border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item summary{
  display:flex;align-items:center;gap:18px;padding:24px 0;cursor:pointer;
  list-style:none;font-family:var(--font-serif);font-size:19px;font-weight:600;color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--c-primary)}
.faq-item summary:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:6px}
.faq-idx{font-family:var(--font-serif);font-size:15px;color:var(--c-accent);flex:none;min-width:26px}
.faq-sign{position:relative;width:26px;height:26px;margin-left:auto;flex:none;transition:transform .25s ease-out}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;left:50%;top:50%;background:var(--c-muted);transform:translate(-50%,-50%);transition:background-color .2s ease}
.faq-sign::before{width:14px;height:2px}
.faq-sign::after{width:2px;height:14px}
.faq-item[open] .faq-sign{transform:rotate(45deg)}
.faq-item[open] .faq-sign::before,.faq-item[open] .faq-sign::after{background:var(--c-primary)}
.faq-answer{padding:0 0 26px 44px;max-width:760px;color:#33403C;font-size:16px;line-height:1.85}

/* CTA 深区 */
.cta-band{position:relative;background:var(--c-dark);color:#fff;overflow:hidden;padding:104px 0;scroll-margin-top:88px}
.cta-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.webp');background-size:cover;background-position:center;opacity:.16}
.cta-inner{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.cta-inner h2{font-size:clamp(26px,3.4vw,38px);color:#fff}
.cta-inner p.lead{color:rgba(255,255,255,.78);margin-top:18px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.cta-meta{margin-top:32px;display:grid;gap:10px;font-size:14.5px;color:rgba(255,255,255,.7)}
.cta-meta span{display:inline-flex;align-items:center;gap:10px}
.cta-meta i{width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:none}
.lead-form{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius-lg);padding:30px}
.lead-form h3{font-size:20px;color:#fff;margin-bottom:6px}
.lead-form .hint{font-size:13.5px;color:rgba(255,255,255,.62);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.66);margin-bottom:8px}
.field input,.field textarea{
  width:100%;min-height:48px;padding:12px 14px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.22);color:#fff;font-size:15px;
  transition:border-color .18s ease,background-color .18s ease;
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.45)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--c-accent);background:rgba(255,255,255,.12)}
.req{color:var(--c-accent)}
.form-note{font-size:13px;color:rgba(255,255,255,.62);margin-top:12px}
.form-msg{font-size:13.5px;color:#F0B98E;margin-top:12px;display:none}
.form-msg.is-visible{display:block}

/* 页脚 */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.74);padding:76px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px}
.footer-brand .brand{color:#fff;margin-bottom:18px}
.footer-brand .brand-mark{background:var(--c-accent)}
.footer-brand p{font-size:15px;line-height:1.85;max-width:320px;color:rgba(255,255,255,.7)}
.footer-quote{
  margin-top:18px;padding-left:14px;border-left:3px solid var(--c-accent);
  font-size:14px;color:rgba(255,255,255,.72);
}
.footer-contact{margin-top:18px;display:grid;gap:8px;font-size:14.5px}
.footer-contact a:hover{color:var(--c-accent)}
.footer-col h4{
  font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.55);
  font-weight:600;margin-bottom:18px;
}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14.8px;transition:color .18s ease,transform .18s ease;display:inline-block}
.footer-col a:hover{color:var(--c-accent);transform:translateX(2px)}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13.5px;color:rgba(255,255,255,.55);
}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s cubic-bezier(.22,.61,.36,1),transform .5s cubic-bezier(.22,.61,.36,1)}
.reveal.is-visible{opacity:1;transform:none}

@media (max-width:1180px){
  .nav-links{gap:2px}
  .nav-link{font-size:14.5px;padding:9px 8px}
  .nav-pill{font-size:14px;padding:9px 12px}
  .header-actions .btn-outline{display:none}
}
@media (max-width:1024px){
  .nav-links,.header-actions{display:none}
  .menu-btn{display:flex}
  .split{grid-template-columns:1fr;gap:36px}
  .card-grid{grid-template-columns:1fr;gap:20px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .cta-inner{grid-template-columns:1fr;gap:44px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:768px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section-tight{padding:52px 0}
  .page-banner{min-height:260px}
  .banner-inner{padding:56px 0 38px}
  .stat-band{grid-template-columns:1fr;gap:20px;padding:24px 0}
  .cta-band{padding:68px 0}
  .faq-answer{padding-left:0}
  .faq-item summary{font-size:17.5px;gap:12px;padding:20px 0}
  .step{padding:22px 20px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .brand{font-size:16px}
  .brand-mark{width:30px;height:30px;font-size:14px}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta-actions .btn{width:100%}
  .lead-form{padding:24px 20px}
  .num-list li{gap:12px}
  .num{min-width:28px;font-size:17px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* roulang page: category2 */
:root{
  --c-primary:#14453C;
  --c-primary-deep:#0C2E28;
  --c-accent:#C9662F;
  --c-accent-soft:#F3E2D6;
  --c-ink:#10201D;
  --c-muted:#6E7A76;
  --c-bg:#FAF8F4;
  --c-surface:#FFFFFF;
  --c-surface-alt:#F1EEE7;
  --c-line:#E2DDD2;
  --c-dark:#0E1E1B;
  --c-teal-soft:#DDE9E4;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:10px;
  --shadow-sm:0 1px 2px rgba(16,32,29,.05);
  --shadow-md:0 18px 40px rgba(16,32,29,.10);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
html body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
ul{margin:0;padding:0;list-style:none;}
section{scroll-margin-top:88px;}

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

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(250,248,244,.86);
  backdrop-filter:saturate(1.4) blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.96);
  border-bottom-color:var(--c-line);
  box-shadow:0 6px 22px rgba(16,32,29,.06);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(150deg,var(--c-primary) 0%,var(--c-primary-deep) 100%);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-family:var(--font-serif);font-size:17px;font-weight:700;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.14);
}
.brand-text{font-size:17px;font-weight:600;letter-spacing:-.01em;color:var(--c-ink);white-space:nowrap;}
.brand-text em{font-style:normal;color:var(--c-primary);}

.nav-links{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;padding:9px 12px;font-size:14.5px;color:var(--c-ink);
  border-radius:8px;transition:color .18s ease,background .18s ease;
  display:inline-flex;align-items:center;gap:5px;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform .22s cubic-bezier(.22,.61,.36,1);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-drop svg{width:14px;height:14px;transition:transform .2s ease;}
.nav-drop:hover svg{transform:translateY(2px);}
.nav-pill{
  padding:8px 16px;border-radius:999px;font-size:14px;background:var(--c-accent-soft);
  color:var(--c-primary);font-weight:600;transition:background .18s ease,color .18s ease,transform .18s ease;
  display:inline-flex;align-items:center;
}
.nav-pill:hover{background:#EBD3C2;color:var(--c-primary-deep);}
.nav-pill:active{transform:translateY(1px);}
.nav-pill.is-active{background:var(--c-primary);color:#fff;}
.nav-pill.is-active:hover{background:var(--c-primary-deep);color:#fff;}
.nav-pill:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}

.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-size:15px;font-weight:600;line-height:1;
  padding:0 22px;height:44px;border:1px solid transparent;white-space:nowrap;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 18px rgba(20,69,60,.18);}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:0 12px 24px rgba(20,69,60,.24);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 10px rgba(20,69,60,.2);}
.btn-outline{background:transparent;color:var(--c-primary);border-color:rgba(20,69,60,.35);}
.btn-outline:hover{background:var(--c-teal-soft);border-color:var(--c-primary);}
.btn-outline:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;}
.btn-lg{height:50px;padding:0 26px;font-size:15.5px;}

.hamburger{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;align-items:center;justify-content:center;color:var(--c-ink);
}
.hamburger:hover{border-color:rgba(20,69,60,.35);color:var(--c-primary);}
.hamburger svg{width:20px;height:20px;}

.drawer{
  position:fixed;inset:0;z-index:90;background:rgba(14,30,27,.4);
  opacity:0;pointer-events:none;transition:opacity .25s ease;
}
.drawer.is-open{opacity:1;pointer-events:auto;}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:min(360px,88vw);
  background:var(--c-surface);padding:24px 22px 32px;
  display:flex;flex-direction:column;gap:6px;
  transform:translateX(100%);transition:transform .32s cubic-bezier(.22,.61,.36,1);
  box-shadow:-16px 0 40px rgba(16,32,29,.16);
}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--c-line);background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--c-ink);
}
.drawer-close:hover{color:var(--c-primary);border-color:rgba(20,69,60,.35);}
.drawer-link{
  display:block;padding:14px 12px;border-radius:10px;font-size:16px;font-weight:500;
  border-bottom:1px solid var(--c-line);
}
.drawer-link:hover{background:var(--c-surface-alt);color:var(--c-primary);}
.drawer-link.is-active{color:var(--c-primary);font-weight:700;}
.drawer-cta{margin-top:22px;display:flex;flex-direction:column;gap:10px;}

/* ============ 页面头部（大图 + 叠加白卡） ============ */
.page-head{position:relative;padding-bottom:0;}
.head-media{position:relative;height:440px;overflow:hidden;}
.head-media img{width:100%;height:100%;object-fit:cover;}
.head-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,46,40,.62) 0%,rgba(12,46,40,.42) 55%,rgba(12,46,40,.72) 100%);
}
.head-grain{
  position:absolute;inset:0;z-index:2;pointer-events:none;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.24) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.24) 1px,transparent 1px);
  background-size:64px 64px;
}
.head-card-wrap{position:relative;z-index:3;margin-top:-132px;}
.head-card{
  background:var(--c-surface);border-radius:var(--radius-lg);
  padding:38px 42px 34px;box-shadow:var(--shadow-md);
  border:1px solid var(--c-line);max-width:900px;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);letter-spacing:.02em;}
.breadcrumb a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb span{color:var(--c-line);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-top:18px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--c-primary);
  font-weight:700;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-accent);display:inline-block;border-radius:2px;}
.page-title{
  font-family:var(--font-serif);font-weight:700;color:var(--c-ink);
  font-size:clamp(30px,3.6vw,44px);line-height:1.24;letter-spacing:-.02em;
  margin:14px 0 0;
}
.page-lead{font-size:17px;color:var(--c-muted);max-width:660px;margin:16px 0 0;line-height:1.85;}
.head-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.head-facts{
  display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;padding-top:22px;
  border-top:1px solid var(--c-line);font-size:13.5px;color:var(--c-muted);
}
.head-facts strong{font-family:var(--font-serif);font-size:20px;color:var(--c-primary);display:block;line-height:1.4;}

/* ============ 通用板块 ============ */
.section{padding:104px 0;}
.section-tight{padding:72px 0;}
.section-alt{background:var(--c-surface-alt);}
.sec-head{max-width:720px;margin-bottom:52px;}
.sec-title{
  font-family:var(--font-serif);font-weight:700;color:var(--c-ink);
  font-size:clamp(26px,2.8vw,36px);line-height:1.28;letter-spacing:-.02em;margin:14px 0 0;
}
.sec-desc{margin:16px 0 0;font-size:16.5px;color:var(--c-muted);line-height:1.9;}
.sec-title-sm{font-family:var(--font-serif);font-size:22px;font-weight:700;color:var(--c-ink);margin:0 0 10px;line-height:1.4;}

/* ============ 双列对比卡 ============ */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-card{
  border-radius:var(--radius-card);padding:28px 28px 26px;border:1px solid var(--c-line);
  box-shadow:var(--shadow-sm);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(20,69,60,.35);}
.compare-card.is-plain{background:var(--c-surface-alt);}
.compare-card.is-strong{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.compare-card.is-strong .card-tag{background:rgba(255,255,255,.14);color:#fff;}
.compare-card.is-strong .card-title{color:#fff;}
.compare-card.is-strong li{color:rgba(255,255,255,.86);}
.compare-card.is-strong li::before{background:var(--c-accent);}
.card-tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--c-teal-soft);color:var(--c-primary);font-size:12px;letter-spacing:.08em;font-weight:700;
}
.card-title{font-family:var(--font-serif);font-size:23px;font-weight:700;margin:16px 0 6px;line-height:1.38;}
.check-list{margin-top:14px;}
.check-list li{
  position:relative;padding-left:20px;margin-bottom:11px;font-size:15.5px;color:#3D4B47;line-height:1.8;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;
  background:var(--c-accent);transform:rotate(45deg);
}

/* ============ 能力对比表 ============ */
.table-wrap{
  border:1px solid var(--c-line);border-radius:var(--radius-card);overflow:hidden;background:var(--c-surface);
  box-shadow:var(--shadow-sm);
}
.table-scroll{overflow-x:auto;}
table.cap-table{width:100%;border-collapse:collapse;min-width:720px;}
table.cap-table thead th{
  background:var(--c-surface-alt);text-align:left;font-size:13px;letter-spacing:.08em;
  color:var(--c-muted);font-weight:700;padding:16px 22px;border-bottom:1px solid var(--c-line);
}
table.cap-table tbody td{
  padding:18px 22px;font-size:15px;color:#3D4B47;border-bottom:1px solid var(--c-line);line-height:1.75;
}
table.cap-table tbody tr:last-child td{border-bottom:none;}
table.cap-table tbody tr:nth-child(even){background:#FCFAF6;}
table.cap-table td:first-child{font-weight:600;color:var(--c-ink);}
td .mark{color:var(--c-primary);font-weight:600;}

/* ============ 流程条 ============ */
.flow-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  overflow-x:auto;padding-bottom:6px;
}
.flow-item{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:26px 24px 24px;min-width:230px;box-shadow:var(--shadow-sm);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.flow-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(20,69,60,.35);}
.flow-node{
  width:34px;height:34px;border-radius:50%;background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
  font-family:var(--font-serif);
}
.flow-item h3{font-family:var(--font-serif);font-size:19px;font-weight:700;margin:16px 0 8px;}
.flow-item p{font-size:15px;color:var(--c-muted);margin:0;line-height:1.85;}
.flow-item::after{
  content:"";position:absolute;top:43px;right:-14px;width:14px;height:1px;background:var(--c-line);
}
.flow-item:last-child::after{display:none;}

/* ============ 场景图文 ============ */
.scene-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;}
.scene-media{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--shadow-md);}
.scene-media img{width:100%;height:380px;object-fit:cover;}
.num-list li{
  display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--c-line);
}
.num-list li:last-child{border-bottom:none;}
.num-list .num{
  font-family:var(--font-serif);font-size:17px;font-weight:700;color:var(--c-primary);
  min-width:34px;letter-spacing:.02em;
}
.num-list h3{font-size:17px;font-weight:700;margin:0 0 4px;color:var(--c-ink);}
.num-list p{margin:0;font-size:15px;color:var(--c-muted);line-height:1.8;}

/* ============ 证言 ============ */
.quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.quote-card{
  background:var(--c-surface-alt);border-left:3px solid var(--c-primary);
  border-radius:0 var(--radius-card) var(--radius-card) 0;padding:28px 28px 24px;
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.quote-card p{
  font-family:var(--font-serif);font-size:19px;line-height:1.72;color:var(--c-ink);margin:0;
}
.quote-card footer{
  margin-top:16px;font-size:13.5px;color:var(--c-muted);letter-spacing:.02em;
}

/* ============ FAQ ============ */
.faq-list{max-width:820px;border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item summary{
  display:flex;align-items:flex-start;gap:18px;padding:24px 4px;cursor:pointer;list-style:none;
  font-size:18px;font-weight:600;color:var(--c-ink);line-height:1.6;
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .idx{
  font-family:var(--font-serif);font-size:15px;color:var(--c-primary);min-width:32px;padding-top:3px;
}
.faq-item summary .plus{
  margin-left:auto;width:22px;height:22px;flex-shrink:0;position:relative;transition:transform .25s ease;
  color:var(--c-muted);
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-item summary .plus::before{left:0;top:10px;width:22px;height:1.5px;}
.faq-item summary .plus::after{left:10px;top:0;width:1.5px;height:22px;}
.faq-item summary:hover{color:var(--c-primary);}
.faq-item summary:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.faq-item[open] summary{color:var(--c-primary);}
.faq-item[open] summary .plus{transform:rotate(45deg);color:var(--c-accent);}
.faq-answer{padding:0 4px 26px 50px;max-width:720px;font-size:16px;line-height:1.85;color:#3D4B47;}

/* ============ 末尾 CTA ============ */
.cta-band{
  position:relative;background:var(--c-dark);color:#fff;padding:92px 0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;background:rgba(14,30,27,.9);
}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:760px;margin:0 auto;}
.cta-inner .eyebrow{color:#E9D6C8;justify-content:center;}
.cta-title{
  font-family:var(--font-serif);font-size:clamp(26px,3vw,38px);font-weight:700;line-height:1.3;
  margin:16px 0 0;letter-spacing:-.02em;color:#fff;
}
.cta-text{margin:18px auto 0;font-size:16.5px;color:rgba(255,255,255,.78);max-width:620px;line-height:1.9;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px;}
.cta-actions .btn-outline{color:#fff;border-color:rgba(255,255,255,.45);}
.cta-actions .btn-outline:hover{background:rgba(255,255,255,.12);border-color:#fff;}
.cta-meta{
  margin-top:26px;font-size:14px;color:rgba(255,255,255,.62);
  display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:center;
}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.72);padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);}
.footer-brand span{font-size:17px;font-weight:600;color:#fff;}
.footer-desc{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:300px;}
.footer-contact{margin-top:18px;font-size:14px;color:rgba(255,255,255,.62);line-height:2;}
.footer-title{
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.48);
  font-weight:700;margin-bottom:18px;
}
.footer-links li{margin-bottom:11px;}
.footer-links a{
  font-size:14.5px;color:rgba(255,255,255,.72);
  transition:color .18s ease,transform .18s ease;display:inline-block;
}
.footer-links a:hover{color:var(--c-accent);transform:translateX(2px);}
.footer-links a:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.5);
}

/* ============ 移动端底部行动条 ============ */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  background:rgba(255,255,255,.97);border-top:1px solid var(--c-line);
  padding:8px 16px;gap:10px;align-items:center;
  box-shadow:0 -6px 20px rgba(16,32,29,.08);
}
.mobile-bar .btn{flex:1;height:46px;}
.mobile-bar .icon-btn{
  width:46px;height:46px;flex:0 0 46px;border-radius:10px;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);background:#fff;
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s cubic-bezier(.22,.61,.36,1),transform .5s cubic-bezier(.22,.61,.36,1);}
.reveal.is-visible{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .nav-links{display:none;}
  .header-actions .btn-outline{display:none;}
  .hamburger{display:flex;}
  .section{padding:76px 0;}
  .head-media{height:360px;}
  .head-card-wrap{margin-top:-104px;}
  .head-card{padding:30px 28px 28px;}
  .compare-grid{grid-template-columns:1fr;}
  .scene-grid{grid-template-columns:1fr;gap:32px;}
  .scene-media img{height:300px;}
  .flow-strip{grid-template-columns:repeat(4,minmax(230px,1fr));}
  .quote-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:639px){
  .container{padding:0 20px;}
  .mobile-bar{display:flex;}
  body{padding-bottom:64px;}
  .section{padding:60px 0;}
  .section-tight{padding:52px 0;}
  .head-media{height:300px;}
  .head-card-wrap{margin-top:-84px;}
  .head-card{padding:24px 20px 22px;border-radius:var(--radius-card);}
  .page-title{font-size:27px;}
  .page-lead{font-size:15.5px;}
  .head-cta .btn{width:100%;}
  .head-facts{gap:16px;}
  .sec-head{margin-bottom:34px;}
  .flow-strip{grid-template-columns:repeat(4,minmax(210px,1fr));gap:14px;}
  .flow-item{padding:22px 18px;}
  .faq-item summary{font-size:16.5px;padding:20px 2px;gap:12px;}
  .faq-answer{padding-left:44px;font-size:15.5px;}
  .cta-band{padding:66px 0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
}