/* roulang page: index */
:root{
  --ink:#2C2A4A;
  --ink-soft:rgba(44,42,74,.08);
  --gold:#D9A33C;
  --gold-deep:#C08F2C;
  --teal:#4F7C82;
  --deep:#14132A;
  --deep-2:#1D1B3A;
  --paper:#F7F5F1;
  --card:#FFFFFF;
  --line:#E6E2DA;
  --text:#211F2B;
  --muted:#6B6779;
  --error:#C4553B;
  --radius-card:14px;
  --radius-btn:12px;
  --radius-pill:999px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(20,19,42,.05);
  --shadow-2:0 12px 28px -18px rgba(20,19,42,.28);
  --space-section:96px;
  --font-serif:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --font-sans:'PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  letter-spacing:.01em;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{font-family:var(--font-serif);margin:0;line-height:1.3;font-weight:700;letter-spacing:.01em}
p{margin:0 0 1.2em}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1320px}}

/* ---------- 按钮 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease, background-color .18s ease, color .18s ease, border-color .18s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--ink);color:#fff}
.btn--primary:hover{background:#211F3B;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn--primary:active{transform:translateY(-1px)}
.btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn--ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn--gold{background:var(--gold);color:var(--deep);font-weight:700}
.btn--gold:hover{background:var(--gold-deep);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn--line{background:#fff;color:var(--ink);border-color:var(--line)}
.btn--line:hover{border-color:rgba(44,42,74,.35);background:var(--ink-soft);transform:translateY(-2px)}
.btn--block{width:100%}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--radius-pill);
  font-size:13px;line-height:1;border:1px solid transparent;
}
.tag--teal{background:rgba(79,124,130,.1);color:var(--teal);border-color:rgba(79,124,130,.3)}
.tag--gold{background:rgba(217,163,60,.12);color:var(--gold-deep);border-color:rgba(217,163,60,.35)}
.tag--deepline{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.35)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);box-shadow:var(--shadow-1);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  background:var(--deep);display:flex;align-items:center;justify-content:center;
}
.brand__mark svg{width:20px;height:20px}
.brand__text{font-family:var(--font-serif);font-size:20px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.brand__text em{font-style:normal;font-size:12px;font-family:var(--font-sans);color:var(--muted);margin-left:4px;letter-spacing:.06em}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-link{position:relative;font-size:15px;color:var(--text);padding:20px 0;transition:color .18s ease}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-tools{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-search{position:relative}
.nav-search input{
  height:38px;width:230px;padding:0 16px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:var(--paper);font-size:14px;
  transition:border-color .18s ease, box-shadow .18s ease, background-color .18s ease;
}
.nav-search input::placeholder{color:var(--muted)}
.nav-search input:focus{
  outline:none;border-color:var(--ink);background:#fff;box-shadow:0 0 0 3px rgba(44,42,74,.12);
}
.nav-cta{height:40px;padding:0 20px;border-radius:var(--radius-pill);font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.drawer{
  display:none;border-top:1px solid var(--line);background:#fff;padding:16px 24px 24px;
}
.drawer.is-open{display:block}
.drawer nav{display:flex;flex-direction:column;gap:2px;margin-bottom:14px}
.drawer nav a{padding:12px 4px;font-size:16px;border-bottom:1px solid var(--line)}
.drawer .nav-search input{width:100%}
.drawer .btn{margin-top:12px}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:min(88vh,760px);display:flex;align-items:center;
  background-color:var(--deep);overflow:hidden;
}
.hero__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero__mask{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(20,19,42,.86) 0%,rgba(20,19,42,.62) 48%,rgba(20,19,42,.4) 100%);
}
.hero__stars{
  position:absolute;inset:0;opacity:.14;
  background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:26px 26px;
}
.hero__inner{position:relative;z-index:2;padding:96px 0 72px;max-width:620px;color:#fff}
.hero__label{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:var(--radius-pill);border:1px solid rgba(255,255,255,.35);
  background:rgba(255,255,255,.08);font-size:13px;color:rgba(255,255,255,.92);margin-bottom:22px;
}
.hero__label i{color:var(--gold);font-size:11px}
.hero__title{
  font-size:44px;line-height:1.24;color:#fff;margin-bottom:20px;font-weight:700;
}
.hero__title span{color:var(--gold)}
.hero__sub{
  font-size:18px;line-height:1.8;color:rgba(255,255,255,.86);margin-bottom:32px;max-width:560px;
}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px}
.hero__facts{
  display:flex;flex-wrap:wrap;gap:28px;padding-top:26px;border-top:1px solid rgba(255,255,255,.18);
}
.fact{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.86)}
.fact i{color:var(--gold);font-size:14px}

/* ---------- 通用板块 ---------- */
.section{padding:var(--space-section) 0}
.section--paper{background:var(--paper)}
.section--white{background:#fff}
.section--deep{background:var(--deep);color:#fff}
.section-head{max-width:720px;margin-bottom:48px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;color:var(--teal);
  letter-spacing:.08em;margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--gold)}
.h2{font-size:30px;margin-bottom:16px;color:var(--ink)}
.section--deep .h2{color:#fff}
.lead{font-size:16px;color:var(--muted);line-height:1.85;margin:0}
.section--deep .lead{color:rgba(255,255,255,.74)}
.textlink{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--ink);
  border-bottom:2px solid transparent;transition:border-color .18s ease,color .18s ease;
}
.textlink:hover{border-color:var(--ink);color:var(--ink)}
.textlink i{font-size:12px;transition:transform .18s ease}
.textlink:hover i{transform:translateX(3px)}

/* ---------- 卖点区 ---------- */
.value-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.value-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
}
.value-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(44,42,74,.2)}
.value-card--lg{
  grid-column:span 2;flex-direction:row;gap:36px;align-items:center;padding:36px;
  background:linear-gradient(180deg,#fff 0%,#FBF9F5 100%);
}
.value-card--lg .value-card__body{flex:1 1 auto}
.value-card__media{
  flex:0 0 300px;aspect-ratio:16/10;border-radius:var(--radius-img);overflow:hidden;position:relative;
}
.value-card__media img{width:100%;height:100%;object-fit:cover}
.value-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:50%;border:1px solid rgba(217,163,60,.6);
  color:var(--gold-deep);font-family:var(--font-serif);font-size:16px;font-weight:700;
  margin-bottom:18px;background:rgba(217,163,60,.06);
}
.value-card h3{font-size:22px;margin-bottom:12px;color:var(--ink)}
.value-card p{font-size:15px;color:var(--muted);line-height:1.85;margin:0}
.value-row{
  display:flex;gap:18px;align-items:flex-start;padding:24px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.value-row:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(44,42,74,.2)}
.value-row .value-num{margin-bottom:0;flex:0 0 44px;width:44px;height:44px}
.value-row h3{font-size:19px;margin-bottom:8px}
.value-row p{font-size:15px;color:var(--muted);margin:0;line-height:1.8}

/* ---------- 演示区 ---------- */
.demo-row{
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
  padding:36px 0;border-bottom:1px solid var(--line);
}
.demo-row:last-child{border-bottom:none;padding-bottom:0}
.demo-row:first-child{padding-top:0}
.demo-row--rev .demo-media{order:2}
.demo-media{
  aspect-ratio:16/10;border-radius:var(--radius-img);overflow:hidden;background:#E9E5DD;
  box-shadow:var(--shadow-1);
}
.demo-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.demo-media:hover img{transform:scale(1.03)}
.demo-body h3{font-size:22px;margin:14px 0 12px;color:var(--ink)}
.demo-body p{font-size:16px;color:var(--muted);line-height:1.85;margin-bottom:18px}

/* ---------- 证据区 ---------- */
.proof-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:32px 0 48px;border-bottom:1px solid var(--line);
}
.stat__num{
  font-family:var(--font-serif);font-size:38px;font-weight:700;color:var(--ink);
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.stat__num span{font-size:18px;color:var(--gold-deep);margin-left:2px}
.stat__label{font-size:14px;color:var(--muted);margin-top:8px}
.case-track{
  display:flex;gap:20px;overflow-x:auto;padding:40px 0 16px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.case-track::-webkit-scrollbar{height:6px}
.case-track::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px}
.case-card{
  flex:0 0 calc((100% - 60px)/3.5);scroll-snap-align:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease;
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.case-card__thumb{aspect-ratio:16/10;background:#E9E5DD;overflow:hidden}
.case-card__thumb img{width:100%;height:100%;object-fit:cover}
.case-card__body{padding:18px}
.case-card__body h4{font-family:var(--font-serif);font-size:17px;margin-bottom:8px;color:var(--ink)}
.case-card__body p{font-size:14px;color:var(--muted);margin:0;line-height:1.7}
.badge-wall{display:flex;flex-wrap:wrap;gap:12px;padding-top:32px}
.badge{
  display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 16px;
  border-radius:var(--radius-pill);background:#F1EEE8;border:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.badge i{color:var(--teal);font-size:12px}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:1.55fr .95fr;gap:32px}
.news-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(44,42,74,.2)}
.news-card__thumb{
  aspect-ratio:16/10;
  background:
    radial-gradient(rgba(255,255,255,.75) 1px,transparent 1px) 0 0/18px 18px,
    linear-gradient(140deg,#242244 0%,#3A3765 58%,#4F7C82 100%);
}
.news-card__body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.news-card__body .tag{align-self:flex-start;margin-bottom:12px}
.news-card__body h3{
  font-size:19px;line-height:1.45;color:var(--ink);margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__body p{
  font-size:14px;color:var(--muted);line-height:1.75;margin:0 0 16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);padding-top:12px;border-top:1px solid var(--line);
}
.news-card__meta i{color:var(--ink);font-size:12px;transition:transform .18s ease}
.news-card:hover .news-card__meta i{transform:translateX(4px)}
.news-side{display:flex;flex-direction:column;gap:14px}
.news-side__head{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:12px;border-bottom:1px solid var(--line);
}
.news-side__head span{font-family:var(--font-serif);font-size:17px;color:var(--ink);font-weight:700}
.news-row{
  display:flex;gap:14px;align-items:center;padding:12px;background:#fff;
  border:1px solid var(--line);border-radius:12px;transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.news-row:hover{border-color:rgba(44,42,74,.25);transform:translateX(3px);box-shadow:var(--shadow-1)}
.news-row__thumb{
  flex:0 0 96px;width:96px;height:72px;border-radius:10px;
  background:
    radial-gradient(rgba(255,255,255,.7) 1px,transparent 1px) 0 0/14px 14px,
    linear-gradient(140deg,#2C2A4A 0%,#4F7C82 100%);
}
.news-row__body{min-width:0;flex:1 1 auto}
.news-row__body h4{
  font-family:var(--font-sans);font-size:15px;font-weight:600;line-height:1.5;color:var(--ink);
  margin:0 0 6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-row__body span{font-size:13px;color:var(--muted)}
.empty-state{
  grid-column:1 / -1;background:#fff;border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:48px 24px;text-align:center;
}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 16px;border-radius:50%;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--teal);
}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:16px}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:34px 28px;display:flex;flex-direction:column;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.price-card--featured{border:1px solid var(--ink);box-shadow:0 16px 34px -24px rgba(20,19,42,.5)}
.price-card__flag{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  height:26px;padding:0 14px;border-radius:var(--radius-pill);background:var(--ink);color:#fff;
  font-size:12px;display:inline-flex;align-items:center;
}
.price-card h3{font-size:19px;color:var(--ink);margin-bottom:8px}
.price-card__desc{font-size:14px;color:var(--muted);margin-bottom:20px;line-height:1.7}
.price-card__amount{
  font-family:var(--font-serif);font-size:32px;font-weight:700;color:var(--ink);
  font-variant-numeric:tabular-nums;line-height:1.1;margin-bottom:4px;
}
.price-card__amount small{font-size:14px;font-family:var(--font-sans);font-weight:400;color:var(--muted);margin-left:6px}
.price-card__note{font-size:13px;color:var(--muted);margin-bottom:22px}
.price-list{display:flex;flex-direction:column;gap:12px;margin-bottom:28px}
.price-list li{display:flex;gap:10px;font-size:14px;color:var(--text);line-height:1.7}
.price-list li::before{
  content:"✓";flex:0 0 18px;width:18px;height:18px;border-radius:50%;
  background:rgba(79,124,130,.12);color:var(--teal);font-size:11px;
  display:inline-flex;align-items:center;justify-content:center;margin-top:4px;
}
.price-card .btn{margin-top:auto}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-side{position:sticky;top:96px}
.faq-side .h2{margin-bottom:14px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:transparent;border:none;text-align:left;padding:24px 8px;cursor:pointer;
  font-family:var(--font-serif);font-size:18px;color:var(--ink);transition:background-color .18s ease;
}
.faq-q:hover{background:rgba(44,42,74,.03)}
.faq-q i{
  flex:0 0 auto;color:var(--gold-deep);font-size:15px;transition:transform .2s ease;
}
.faq-item.is-open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq-a p{font-size:15px;line-height:1.8;color:var(--muted);padding:0 8px 26px;margin:0}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--deep);color:#fff;padding:64px 0}
.cta-band__inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{font-size:26px;color:#fff;margin-bottom:10px}
.cta-band p{font-size:15px;color:rgba(255,255,255,.72);margin:0}
.cta-band .btn--gold{background:var(--gold);color:var(--deep)}

/* ---------- 联系表单 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.contact-info{display:flex;flex-direction:column;gap:18px;margin-top:26px}
.contact-item{display:flex;gap:14px;align-items:flex-start}
.contact-item i{
  flex:0 0 38px;width:38px;height:38px;border-radius:12px;background:rgba(79,124,130,.1);
  color:var(--teal);display:flex;align-items:center;justify-content:center;font-size:14px;
}
.contact-item strong{display:block;font-size:15px;color:var(--ink);font-weight:600}
.contact-item span{font-size:14px;color:var(--muted)}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:32px;box-shadow:var(--shadow-1)}
.field{margin-bottom:20px}
.field label{display:block;font-size:14px;color:var(--ink);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 16px;border:1px solid var(--line);
  border-radius:var(--radius-btn);background:var(--paper);font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.field select{border-radius:var(--radius-btn);appearance:none}
.field textarea{height:120px;padding:12px 16px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--ink);background:#fff;box-shadow:0 0 0 3px rgba(44,42,74,.12);
}
.field .hint{font-size:13px;color:var(--muted);margin-top:8px}
.form-note{font-size:13px;color:var(--muted);margin:14px 0 0;line-height:1.7}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .brand__text{color:#fff}
.footer-brand .brand__text em{color:rgba(255,255,255,.5)}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);margin:18px 0 0;max-width:320px}
.footer-col h4{
  font-family:var(--font-sans);font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;
}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);transition:color .18s ease}
.footer-col a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 32px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:#fff}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:32px;z-index:70;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta__btn{
  display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 24px;
  border-radius:var(--radius-pill);border:none;cursor:pointer;
  background:var(--ink);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 14px 30px -16px rgba(20,19,42,.6);
  transition:transform .18s ease,background-color .18s ease;
}
.float-cta__btn:hover{background:#211F3B;transform:translateY(-2px)}
.float-cta__btn i{color:var(--gold)}
.float-panel{
  position:absolute;right:0;bottom:64px;width:280px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-2);padding:20px;
  display:none;
}
.float-panel.is-open{display:block}
.float-panel h4{font-size:16px;color:var(--ink);margin-bottom:6px}
.float-panel p{font-size:13px;color:var(--muted);margin-bottom:16px;line-height:1.7}
.float-panel a{
  display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:10px;
  font-size:14px;color:var(--text);transition:background-color .18s ease;
}
.float-panel a:hover{background:var(--ink-soft)}
.float-panel a i{color:var(--teal);width:16px}
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:80;height:56px;
  background:#fff;border-top:1px solid var(--line);
  padding:0 16px calc(env(safe-area-inset-bottom,0px));
  align-items:center;gap:12px;box-shadow:0 -6px 18px -14px rgba(20,19,42,.4);
}
.mobile-bar a{flex:1 1 auto;height:40px;display:inline-flex;align-items:center;justify-content:center;font-size:14px}
.mobile-bar .close-bar{
  flex:0 0 32px;width:32px;height:32px;border-radius:50%;border:1px solid var(--line);
  background:#fff;color:var(--muted);cursor:pointer;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-search input{width:180px}
  .value-card__media{flex:0 0 240px}
}
@media (max-width:1023px){
  :root{--space-section:64px}
  .nav-links,.nav-search,.nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .hero{min-height:auto}
  .hero__inner{padding:72px 0 56px}
  .hero__title{font-size:34px}
  .demo-row{grid-template-columns:1fr;gap:28px}
  .demo-row--rev .demo-media{order:0}
  .value-card--lg{flex-direction:column;align-items:flex-start;gap:24px}
  .value-card__media{flex:0 0 auto;width:100%}
  .proof-stats{grid-template-columns:repeat(2,1fr);gap:28px}
  .case-card{flex:0 0 calc((100% - 40px)/2.4)}
  .news-grid{grid-template-columns:1fr}
  .news-side{gap:12px}
  .faq-grid{grid-template-columns:1fr;gap:24px}
  .faq-side{position:static}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .price-grid{grid-template-columns:1fr;gap:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--space-section:48px}
  body{font-size:16px}
  .container{padding:0 16px}
  .hero__title{font-size:28px}
  .hero__sub{font-size:16px}
  .hero__actions .btn{flex:1 1 100%}
  .hero__facts{gap:16px}
  .fact{font-size:13px}
  .h2{font-size:24px}
  .value-grid{grid-template-columns:1fr;gap:16px}
  .value-card--lg{grid-column:span 1;padding:26px}
  .value-card{padding:26px}
  .value-card h3{font-size:19px}
  .value-row{flex-direction:column;gap:12px}
  .proof-stats{grid-template-columns:1fr 1fr;gap:20px;padding-bottom:36px}
  .stat__num{font-size:30px}
  .case-card{flex:0 0 82%}
  .news-cards{grid-template-columns:1fr}
  .price-card{padding:28px 22px}
  .faq-q{font-size:16px;padding:20px 4px}
  .cta-band__inner{flex-direction:column;align-items:flex-start}
  .cta-band .btn{width:100%}
  .form-card{padding:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .float-cta{display:none}
  .mobile-bar{display:flex}
  body.has-mobile-bar{padding-bottom:64px}
}
@media (max-width:519px){
  .hero__title{font-size:25px}
  .hero__facts{flex-direction:column;gap:12px;align-items:flex-start}
  .proof-stats{grid-template-columns:1fr;gap:18px}
  .brand__text{font-size:18px}
}

/* roulang page: article */
:root{
  --ink:#2C2A4A;
  --gold:#D9A33C;
  --cyan:#4F7C82;
  --deep:#14132A;
  --paper:#F7F5F1;
  --card:#FFFFFF;
  --line:#E6E2DA;
  --text:#211F2B;
  --muted:#6B6779;
  --danger:#C4553B;
  --radius-card:14px;
  --radius-btn:12px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(20,19,42,.05);
  --shadow-2:0 12px 28px -18px rgba(20,19,42,.28);
  --sect:96px;
  --container:1200px;
  --font-serif:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --font-sans:'PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--card);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:700;line-height:1.32;color:var(--ink);}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1320px;}}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.header-inner{display:flex;align-items:center;gap:24px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand__mark{width:26px;height:26px;display:grid;place-items:center;}
.brand__mark svg{width:24px;height:24px;}
.brand__text{font-family:var(--font-serif);font-size:19px;font-weight:700;letter-spacing:.01em;color:var(--ink);}
.brand__text em{font-style:normal;font-family:var(--font-sans);font-size:12px;font-weight:500;letter-spacing:.14em;color:var(--muted);margin-left:5px;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:14px;}
.nav-link{font-size:15px;color:var(--text);padding:20px 0;position:relative;}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto;}
.site-search{position:relative;}
.site-search i{position:absolute;left:14px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--muted);}
.site-search input{
  height:38px;width:220px;border-radius:999px;border:1px solid var(--line);
  background:var(--paper);padding:0 16px 0 36px;font-size:14px;outline:none;
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.site-search input::placeholder{color:#9C97A8;}
.site-search input:focus{border-color:var(--ink);background:#fff;box-shadow:0 0 0 3px rgba(44,42,74,.12);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;border-radius:var(--radius-btn);
  padding:14px 22px;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:#22203B;color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(-1px);}
.btn-ghost{border-color:rgba(255,255,255,.6);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-2px);}
.btn-gold{background:var(--gold);color:#2A2005;border-radius:999px;padding:11px 20px;font-size:14px;}
.btn-gold:hover{background:#C9922F;color:#2A2005;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-outline{border-color:var(--line);color:var(--ink);background:#fff;}
.btn-outline:hover{border-color:rgba(44,42,74,.4);background:rgba(44,42,74,.06);transform:translateY(-2px);}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:12px;color:var(--ink);font-size:16px;}
.nav-toggle:hover{background:var(--paper);}

/* ============ mobile drawer ============ */
.drawer{
  display:none;border-top:1px solid var(--line);background:#fff;padding:16px 0 22px;
}
.drawer.is-open{display:block;}
.drawer .drawer-nav{display:flex;flex-direction:column;}
.drawer .drawer-nav a{padding:13px 0;font-size:16px;border-bottom:1px solid var(--line);color:var(--text);}
.drawer .drawer-nav a.is-active{color:var(--ink);font-weight:600;}
.drawer .drawer-search{margin:16px 0 12px;}
.drawer .drawer-search input{width:100%;height:44px;border-radius:999px;border:1px solid var(--line);background:var(--paper);padding:0 18px;outline:none;}
.drawer .btn{width:100%;}

/* ============ article banner ============ */
.article-banner{
  position:relative;color:#fff;overflow:hidden;
  background-image:
    radial-gradient(rgba(255,255,255,.14) 1px, transparent 1px),
    linear-gradient(rgba(20,19,42,.72), rgba(20,19,42,.82)),
    url('/assets/images/backpic/back-2.png');
  background-size:22px 22px, auto, cover;
  background-position:0 0, center, center;
  padding:44px 0 46px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72);}
.breadcrumb a{color:rgba(255,255,255,.78);border-bottom:1px solid transparent;}
.breadcrumb a:hover{color:#fff;border-bottom-color:var(--gold);}
.breadcrumb .current{color:var(--gold);}
.article-head{margin-top:22px;max-width:860px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;line-height:1;
  padding:7px 13px;border-radius:999px;background:rgba(79,124,130,.28);
  border:1px solid rgba(79,124,130,.6);color:#CFE6E4;
}
.article-head h1{
  color:#fff;font-size:40px;line-height:1.28;margin:16px 0 18px;letter-spacing:.01em;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;font-size:14px;color:rgba(255,255,255,.76);}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--gold);font-size:13px;}

/* ============ layout ============ */
.page-main{background:#fff;padding:var(--sect) 0 0;}
.article-layout{padding-bottom:24px;}
.article-panel{max-width:820px;}
.article-body{font-size:17px;line-height:1.9;color:var(--text);}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  font-size:26px;margin:2em 0 .85em;padding-left:14px;
  border-left:4px solid var(--gold);line-height:1.36;
}
.article-body h3{font-size:19px;margin:1.7em 0 .6em;}
.article-body h4{font-size:17px;margin:1.4em 0 .5em;}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.3em;list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.55em;}
.article-body blockquote{
  margin:1.5em 0;padding:18px 22px;background:var(--paper);
  border-left:3px solid var(--ink);border-radius:0 var(--radius-card) var(--radius-card) 0;
  color:#4A475C;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius-img);margin:1.4em 0;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px;}
.article-body a{color:var(--ink);border-bottom:1px solid var(--gold);}
.article-body a:hover{color:var(--gold);}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;}
.article-body th{background:var(--ink);color:#fff;font-weight:600;text-align:left;padding:12px 14px;}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);}
.article-body tbody tr:nth-child(even){background:var(--paper);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0;}

.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:56px 28px;text-align:center;background:var(--paper);
}
.empty-state .star{font-size:26px;color:var(--gold);}
.empty-state h3{margin:14px 0 8px;font-size:22px;}
.empty-state p{color:var(--muted);margin:0 0 20px;}

/* ============ sidebar ============ */
.sidebar{position:sticky;top:88px;}
.widget{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;margin-bottom:20px;box-shadow:var(--shadow-1);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.widget:hover{border-color:rgba(44,42,74,.2);box-shadow:var(--shadow-2);}
.widget-title{
  display:flex;align-items:center;gap:9px;font-size:15px;font-weight:700;
  font-family:var(--font-sans);color:var(--ink);margin-bottom:14px;
}
.widget-title::before{content:"";width:14px;height:2px;background:var(--gold);border-radius:2px;}
.toc-list li{border-bottom:1px dashed var(--line);}
.toc-list li:last-child{border-bottom:0;}
.toc-list a{display:block;padding:10px 0;font-size:14px;color:var(--muted);line-height:1.5;}
.toc-list a:hover{color:var(--ink);}
.mini-item{display:flex;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);}
.mini-item:last-child{border-bottom:0;padding-bottom:0;}
.mini-thumb{
  width:96px;height:72px;flex:none;border-radius:10px;overflow:hidden;background:var(--paper);
}
.mini-thumb img{width:100%;height:100%;object-fit:cover;}
.mini-body h4{font-size:15px;font-family:var(--font-sans);font-weight:600;line-height:1.5;margin-bottom:6px;}
.mini-body h4 a:hover{color:var(--gold);}
.mini-body time{font-size:13px;color:var(--muted);}
.side-cta{
  background:var(--deep);border-radius:var(--radius-card);padding:24px;color:#fff;
  background-image:radial-gradient(rgba(255,255,255,.12) 1px, transparent 1px);
  background-size:20px 20px;
}
.side-cta h4{color:#fff;font-size:19px;margin-bottom:8px;}
.side-cta p{font-size:14px;color:rgba(255,255,255,.72);margin:0 0 16px;}
.side-cta .btn{width:100%;}

/* ============ article tail ============ */
.article-tail{margin-top:44px;}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding-top:24px;border-top:1px solid var(--line);}
.tag-row .label{font-size:14px;color:var(--muted);}
.tag{
  display:inline-flex;align-items:center;font-size:13px;line-height:1;
  padding:8px 14px;border-radius:999px;background:rgba(79,124,130,.1);
  border:1px solid rgba(79,124,130,.32);color:#3B6167;transition:background .18s ease,color .18s ease;
}
.tag:hover{background:rgba(79,124,130,.2);color:#2C4B50;}
.nav-cards{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px;}
.nav-card{
  display:block;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;background:#fff;box-shadow:var(--shadow-1);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.nav-card:hover{transform:translateY(-4px);border-color:rgba(44,42,74,.28);box-shadow:var(--shadow-2);}
.nav-card small{font-size:13px;color:var(--muted);display:block;margin-bottom:8px;}
.nav-card h4{font-size:17px;line-height:1.5;color:var(--ink);}
.nav-card.next{text-align:right;}

/* ============ related ============ */
.section{padding:var(--sect) 0;}
.section--paper{background:var(--paper);}
.section-head{margin-bottom:36px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;
  color:var(--cyan);font-weight:600;margin-bottom:12px;
}
.section-head .eyebrow::before{content:"";width:18px;height:2px;background:var(--gold);}
.section-head h2{font-size:30px;}
.section-head p{color:var(--muted);margin:12px 0 0;max-width:640px;}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.article-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.article-card:hover{transform:translateY(-4px);border-color:rgba(44,42,74,.28);box-shadow:var(--shadow-2);}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--paper);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.article-card:hover .card-media img{transform:scale(1.04);}
.card-media .chip{position:absolute;left:12px;top:12px;background:rgba(20,19,42,.72);border-color:rgba(255,255,255,.28);color:#fff;}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:19px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-body p{font-size:15px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:14px;color:var(--muted);}
.card-foot i{color:var(--gold);}

/* ============ contact form ============ */
.contact-wrap{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:start;}
.contact-copy h2{font-size:30px;margin-bottom:14px;}
.contact-copy p{color:var(--muted);margin:0 0 22px;}
.contact-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text);margin-bottom:12px;}
.contact-points i{color:var(--gold);margin-top:5px;}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-1);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;height:46px;border-radius:12px;border:1px solid var(--line);
  background:#fff;padding:0 16px;font-size:15px;outline:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:118px;padding:12px 16px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{border-color:var(--ink);box-shadow:0 0 0 3px rgba(44,42,74,.12);}
.form-note{font-size:13px;color:var(--muted);margin-top:12px;}
.form-card .btn{width:100%;}

/* ============ CTA band ============ */
.cta-band{
  background-color:var(--deep);color:#fff;padding:72px 0;
  background-image:
    radial-gradient(rgba(255,255,255,.12) 1px, transparent 1px),
    linear-gradient(rgba(20,19,42,.86), rgba(20,19,42,.86)),
    url('/assets/images/backpic/back-3.png');
  background-size:22px 22px, auto, cover;
  background-position:0 0, center, center;
}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;}
.cta-inner h2{color:#fff;font-size:30px;margin-bottom:10px;}
.cta-inner p{color:rgba(255,255,255,.74);margin:0;max-width:620px;}

/* ============ footer ============ */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:72px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);margin:0;max-width:340px;}
.footer-col h4{color:#fff;font-family:var(--font-sans);font-size:15px;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);}
.footer-col a:hover{color:#fff;border-bottom:1px solid var(--gold);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:rgba(255,255,255,.56);
}

/* ============ float cta ============ */
.float-cta{position:fixed;right:24px;bottom:28px;z-index:90;display:flex;flex-direction:column;align-items:flex-end;gap:12px;}
.float-cta__btn{
  display:inline-flex;align-items:center;gap:9px;height:50px;padding:0 22px;border-radius:999px;
  background:var(--ink);color:#fff;font-size:15px;font-weight:600;box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .28s ease,transform .28s ease,visibility .28s ease,background .18s ease;
}
.float-cta__btn.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta__btn:hover{background:#22203B;color:#fff;transform:translateY(-2px);}
.float-cta__panel{
  display:none;width:268px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-2);
}
.float-cta__panel.is-open{display:block;}
.float-cta__panel h4{font-size:17px;margin-bottom:8px;}
.float-cta__panel p{font-size:14px;color:var(--muted);margin:0 0 14px;}
.float-cta__panel .panel-links a{
  display:flex;align-items:center;gap:10px;font-size:15px;padding:11px 0;
  border-bottom:1px solid var(--line);color:var(--text);
}
.float-cta__panel .panel-links a:last-child{border-bottom:0;}
.float-cta__panel .panel-links a:hover{color:var(--gold);}
.float-bar{display:none;}

/* ============ responsive ============ */
@media (max-width:1023px){
  .nav-links,.site-search,.header-actions .btn-gold{display:none;}
  .nav-toggle{display:grid;place-items:center;margin-left:auto;}
  .article-head h1{font-size:32px;}
  .sidebar{position:static;margin-top:40px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .contact-wrap{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section,.page-main{padding-top:64px;}
}
@media (max-width:639px){
  body{padding-bottom:64px;}
  .container{padding:0 16px;}
  .article-banner{padding:32px 0 34px;}
  .article-head h1{font-size:28px;margin:14px 0 16px;}
  .article-meta{gap:12px;font-size:13px;}
  .article-body{font-size:16px;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .section,.page-main{padding-top:48px;}
  .section-head h2,.contact-copy h2,.cta-inner h2{font-size:24px;}
  .card-grid{grid-template-columns:1fr;}
  .nav-cards{grid-template-columns:1fr;}
  .nav-card.next{text-align:left;}
  .footer-grid{grid-template-columns:1fr;}
  .float-cta{display:none;}
  .float-bar{
    display:flex;align-items:center;gap:10px;position:fixed;left:0;right:0;bottom:0;z-index:95;
    min-height:56px;padding:8px 16px calc(8px + env(safe-area-inset-bottom));
    background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px -14px rgba(20,19,42,.4);
  }
  .float-bar .btn{flex:1;padding:13px 10px;}
  .float-bar .close-bar{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);color:var(--muted);}
  .float-bar.is-hidden{display:none;}
}

/* roulang page: category1 */
:root{
  --ink:#2C2A4A;
  --gold:#D9A33C;
  --gold-deep:#C9922F;
  --teal:#4F7C82;
  --deep:#14132A;
  --paper:#F7F5F1;
  --paper-2:#FBF9F6;
  --white:#FFFFFF;
  --line:#E6E2DA;
  --text:#211F2B;
  --muted:#6B6779;
  --danger:#C4553B;
  --radius-card:14px;
  --radius-btn:12px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(20,19,42,.05);
  --shadow-2:0 12px 28px -18px rgba(20,19,42,.28);
  --container:1200px;
  --serif:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --sans:'PingFang SC','Microsoft YaHei',system-ui,-apple-system,'Segoe UI',sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background:var(--white);
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--gold-deep)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;line-height:1.3;color:var(--ink);margin:0;letter-spacing:0}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:200}
.skip:focus{left:0;color:#fff}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1320px}}

/* ---------- Header / Nav ---------- */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:28px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{display:inline-flex;width:28px;height:28px;align-items:center;justify-content:center;border-radius:50%;background:var(--deep)}
.brand__mark svg{width:16px;height:16px;display:block}
.brand__text{font-family:var(--serif);font-size:20px;font-weight:700;color:var(--ink);white-space:nowrap}
.brand__text em{font-style:normal;font-family:var(--sans);font-size:11px;font-weight:600;letter-spacing:.14em;color:var(--teal);margin-left:3px;text-transform:lowercase}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-link{position:relative;font-size:15px;color:var(--text);padding:8px 0;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search i{position:absolute;left:14px;font-size:13px;color:var(--muted);pointer-events:none}
.nav-search input{height:38px;width:196px;border:1px solid var(--line);border-radius:999px;background:#fff;padding:0 16px 0 36px;font-size:14px;color:var(--text);transition:width .2s ease,border-color .2s ease,box-shadow .2s ease}
.nav-search input::placeholder{color:#9C98A6}
.nav-search input:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(44,42,74,.1);width:224px}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;transition:border-color .2s ease,background .2s ease}
.nav-toggle span{display:block;width:17px;height:2px;background:var(--ink);border-radius:2px;transition:transform .22s ease,opacity .22s ease}
.nav-toggle:hover{border-color:var(--ink)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-drawer{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-2);padding:8px 24px 24px}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{display:block;padding:13px 0;font-size:15px;color:var(--text);border-bottom:1px solid var(--line)}
.mobile-drawer a.is-active{color:var(--ink);font-weight:600}
.drawer-search{position:relative;margin:18px 0 6px}
.drawer-search i{position:absolute;left:15px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--muted)}
.drawer-search input{width:100%;height:44px;border:1px solid var(--line);border-radius:999px;padding:0 18px 0 38px;font-size:14px}
.drawer-search input:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(44,42,74,.1)}
.drawer-cta{margin-top:16px;display:flex}
.drawer-cta .btn{width:100%}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;font-size:15px;font-weight:600;line-height:1.2;border-radius:var(--radius-btn);border:1px solid transparent;cursor:pointer;text-align:center;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease}
.btn--gold{background:var(--gold);color:#241F36}
.btn--gold:hover{background:var(--gold-deep);color:#241F36;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn--gold:active{transform:translateY(0)}
.btn--primary{background:var(--ink);color:#fff}
.btn--primary:hover{background:#3A3760;color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn--primary:active{transform:translateY(0)}
.btn--outline{border-color:rgba(44,42,74,.35);color:var(--ink);background:transparent}
.btn--outline:hover{background:rgba(44,42,74,.08);color:var(--ink)}
.btn--ghost{border-color:rgba(255,255,255,.5);color:#fff;background:transparent}
.btn--ghost:hover{background:rgba(255,255,255,.14);color:#fff}
.btn--sm{padding:9px 18px;font-size:14px;border-radius:999px}
.btn--block{width:100%}

/* ---------- Hero ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--deep);color:#fff;min-height:320px;display:flex;align-items:center}
.page-hero__bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;z-index:0}
.page-hero::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(100deg,rgba(20,19,42,.94) 0%,rgba(20,19,42,.78) 52%,rgba(20,19,42,.6) 100%)}
.page-hero::before{content:"";position:absolute;inset:0;z-index:2;pointer-events:none;opacity:.14;background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);background-size:26px 26px}
.page-hero__inner{position:relative;z-index:3;padding-top:62px;padding-bottom:62px;max-width:840px}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(255,255,255,.7);margin-bottom:20px}
.crumb a{color:rgba(255,255,255,.78)}
.crumb a:hover{color:#fff}
.crumb em{font-style:normal;color:var(--gold)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.1em;color:var(--teal);text-transform:uppercase}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--gold)}
.eyebrow--light{color:rgba(255,255,255,.75)}
.eyebrow--light::before{background:var(--gold)}
.page-hero h1{color:#fff;font-size:40px;margin:16px 0 18px;max-width:800px}
.page-hero__lead{font-size:17px;line-height:1.85;color:rgba(255,255,255,.82);max-width:700px;margin-bottom:26px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 26px;font-size:14px;color:rgba(255,255,255,.8)}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta i{color:var(--gold);font-size:13px}

/* ---------- Sections ---------- */
.section{padding:96px 0}
.section--tint{background:var(--paper)}
.section--paper{background:var(--paper-2)}
.section--deep{background:var(--deep);color:#fff}
.section-head{max-width:720px;margin-bottom:52px}
.section-head h2{font-size:30px;margin:14px 0 14px}
.section-head p{font-size:16px;color:var(--muted);line-height:1.85}
.section--deep .section-head h2,.section--deep h2{color:#fff}
.section--deep .section-head p{color:rgba(255,255,255,.76)}

/* ---------- Split rows ---------- */
.split-row{align-items:center;row-gap:40px}
.split-row + .split-row{margin-top:72px}
.split-row > .cell:first-child{padding-right:34px}
.split-row > .cell:last-child{padding-left:34px}
.split__media{position:relative;margin:0;aspect-ratio:16/10;border-radius:var(--radius-img);overflow:hidden;box-shadow:var(--shadow-2);background:var(--paper)}
.split__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.split-row:hover .split__media img{transform:scale(1.03)}
.split__index{font-family:var(--serif);font-size:15px;font-weight:700;color:var(--gold);letter-spacing:.08em}
.split__body h3{font-size:22px;margin:12px 0 14px}
.split__body p{font-size:16px;line-height:1.9;color:var(--muted)}
.split__tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.link-arrow{display:inline-flex;align-items:center;gap:8px;margin-top:22px;font-size:15px;font-weight:600;color:var(--ink);position:relative}
.link-arrow i{font-size:12px;transition:transform .2s ease;color:var(--gold)}
.link-arrow::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;background:var(--gold);transform:scaleX(0);transform-origin:left;transition:transform .24s ease}
.link-arrow:hover::after{transform:scaleX(1)}
.link-arrow:hover i{transform:translateX(4px)}

.tag{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;font-size:13px;border-radius:999px;background:rgba(79,124,130,.1);border:1px solid rgba(79,124,130,.22);color:#3C6367;line-height:1.4}
.tag--gold{background:rgba(217,163,60,.12);border-color:rgba(217,163,60,.32);color:#8A6415}

/* ---------- Spec table ---------- */
.table-wrap{border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:#fff;box-shadow:var(--shadow-1)}
.spec-table{width:100%;border-collapse:collapse;margin:0}
.spec-table th,.spec-table td{padding:16px 22px;text-align:left;font-size:15px;line-height:1.7;border-bottom:1px solid var(--line);vertical-align:top}
.spec-table thead th{background:var(--paper-2);font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--muted);text-transform:none}
.spec-table tbody td:first-child{width:190px;font-weight:600;color:var(--ink);white-space:nowrap}
.spec-table tbody td{color:var(--muted)}
.spec-table tbody tr:last-child td{border-bottom:none}
.spec-table tbody tr:hover{background:var(--paper-2)}
.table-note{margin-top:16px;font-size:13px;color:var(--muted)}

/* ---------- Metrics ---------- */
.metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.metric{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 22px;box-shadow:var(--shadow-1);transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}
.metric:hover{border-color:rgba(44,42,74,.2);transform:translateY(-4px);box-shadow:var(--shadow-2)}
.metric__num{display:block;font-family:var(--serif);font-size:38px;font-weight:700;line-height:1.1;color:var(--ink);font-variant-numeric:tabular-nums}
.metric__num em{font-style:normal;font-size:19px;color:var(--gold);margin-left:3px}
.metric__label{display:block;margin-top:10px;font-size:14px;color:var(--muted);line-height:1.7}
.scene-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr;gap:36px}
.faq-side h2{font-size:30px;margin:14px 0 14px}
.faq-side p{font-size:15px;color:var(--muted);line-height:1.85}
.faq-side .btn{margin-top:22px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);transition:background-color .2s ease}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:22px 6px;font-family:var(--serif);font-size:17px;font-weight:700;color:var(--ink);cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-family:var(--sans);font-size:22px;font-weight:400;color:var(--gold);line-height:1;flex:0 0 auto}
.faq-item[open] summary::after{content:"−"}
.faq-item summary:hover{background:var(--paper-2)}
.faq-item[open]{background:#fff}
.faq-answer{padding:0 6px 24px;font-size:15px;line-height:1.9;color:var(--muted)}

/* ---------- Contact form ---------- */
.contact-grid{display:grid;grid-template-columns:1fr;gap:48px}
.contact-intro h2{font-size:30px;margin:14px 0 14px}
.contact-intro p{font-size:16px;color:var(--muted);line-height:1.9}
.contact-points{margin-top:26px;display:grid;gap:14px}
.contact-points li{display:flex;gap:12px;font-size:15px;color:var(--text)}
.contact-points i{color:var(--gold);margin-top:5px;font-size:14px}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:30px;box-shadow:var(--shadow-1)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;background:#fff;border:1px solid var(--line);border-radius:var(--radius-btn);color:var(--text);font-size:15px;height:46px;padding:0 16px;transition:border-color .2s ease,box-shadow .2s ease}
.field textarea{height:auto;min-height:116px;padding:13px 16px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(44,42,74,.12)}
.field input::placeholder,.field textarea::placeholder{color:#9C98A6}
.form-row{display:grid;grid-template-columns:1fr;gap:0}
.form-note{margin-top:14px;font-size:13px;color:var(--muted);line-height:1.7}
.form-success{display:none;margin-top:16px;padding:14px 16px;border-radius:var(--radius-btn);background:rgba(79,124,130,.1);border:1px solid rgba(79,124,130,.24);color:#3C6367;font-size:14px}
.form-success.is-visible{display:block}

/* ---------- CTA band ---------- */
.cta-band__inner{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
.cta-band h2{font-size:30px;color:#fff;max-width:640px}
.cta-band p{color:rgba(255,255,255,.76);font-size:16px;margin-top:14px;max-width:620px}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- Float CTA ---------- */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:90;display:inline-flex;align-items:center;gap:9px;padding:13px 22px;border-radius:999px;background:var(--ink);color:#fff;font-size:15px;font-weight:600;box-shadow:0 12px 28px -14px rgba(20,19,42,.6);opacity:0;transform:translateY(14px);pointer-events:none;transition:opacity .28s ease,transform .28s ease,background-color .2s ease,color .2s ease}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta:hover{background:var(--gold);color:#241F36}
.float-cta i{font-size:14px}

/* ---------- Footer ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:72px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.64);max-width:360px}
.footer-col h4{font-family:var(--serif);font-size:15px;color:#fff;margin-bottom:16px;font-weight:700}
.footer-col ul li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.68);font-size:14px}
.footer-col a:hover{color:#fff}
.footer-bottom{margin-top:56px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55)}

/* ---------- Responsive ---------- */
@media (min-width:768px){
  .metrics{grid-template-columns:repeat(4,minmax(0,1fr))}
  .form-row{grid-template-columns:1fr 1fr;gap:0 18px}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr}
  .cta-band__inner{grid-template-columns:1.4fr auto}
}
@media (min-width:1024px){
  .faq-grid{grid-template-columns:4fr 8fr;gap:64px}
  .contact-grid{grid-template-columns:5fr 7fr;gap:64px}
  .faq-side{position:sticky;top:96px;align-self:start}
  .split-row--reverse > .cell:first-child{order:2}
  .split-row--reverse > .cell:last-child{order:1}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-search{display:none}
  .header-actions .btn{display:none}
  .nav-toggle{display:flex}
  .section{padding:64px 0}
  .section-head{margin-bottom:36px}
  .split-row > .cell:first-child,.split-row > .cell:last-child{padding:0}
  .split-row + .split-row{margin-top:52px}
  .page-hero h1{font-size:32px}
  .section-head h2,.faq-side h2,.contact-intro h2,.cta-band h2{font-size:26px}
}
@media (max-width:767px){
  body{font-size:16px}
  .header-inner{height:56px;gap:16px}
  .brand__text{font-size:18px}
  .page-hero__inner{padding-top:46px;padding-bottom:46px}
  .page-hero h1{font-size:28px;margin:12px 0 14px}
  .page-hero__lead{font-size:15px}
  .hero-meta{font-size:13px;gap:8px 18px}
  .section{padding:48px 0}
  .section-head h2,.faq-side h2,.contact-intro h2,.cta-band h2{font-size:24px}
  .split__body h3{font-size:19px}
  .spec-table th,.spec-table td{padding:13px 15px;font-size:14px}
  .spec-table tbody td:first-child{width:auto;white-space:normal;display:block;border-bottom:none;padding-bottom:4px}
  .spec-table tbody td{border-bottom:1px solid var(--line)}
  .spec-table tbody td:last-child{display:block;padding-top:0}
  .spec-table tbody tr:last-child td:last-child{border-bottom:none}
  .metric__num{font-size:30px}
  .form-card{padding:22px 18px}
  .float-cta{right:16px;bottom:16px;padding:11px 18px;font-size:14px}
  .site-footer{padding-top:52px}
  .footer-bottom{margin-top:36px}
}

/* roulang page: category2 */
:root{
  --ink:#2C2A4A;
  --ink-soft:#3B3862;
  --gold:#D9A33C;
  --gold-soft:rgba(217,163,60,.12);
  --teal:#4F7C82;
  --teal-soft:rgba(79,124,130,.12);
  --deep:#14132A;
  --bg:#F7F5F1;
  --card:#FFFFFF;
  --border:#E6E2DA;
  --text:#211F2B;
  --muted:#6B6779;
  --error:#C4553B;
  --radius-card:14px;
  --radius-btn:12px;
  --radius-pill:999px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(20,19,42,.05);
  --shadow-2:0 12px 28px -18px rgba(20,19,42,.28);
  --section-y:96px;
  --container:1200px;
  --font-title:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --font-body:'PingFang SC','Microsoft YaHei',system-ui,-apple-system,'Helvetica Neue',sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease}
h1,h2,h3,h4{font-family:var(--font-title);color:var(--ink);line-height:1.3;margin:0 0 .6em;font-weight:700}
p{margin:0 0 1.15em}
ul,ol{margin:0 0 1.15em;padding-left:1.15em}
li{margin-bottom:.5em}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--section-y) 0}
.section--tight{padding:64px 0}
.section--alt{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.num{font-variant-numeric:tabular-nums}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid var(--border);
  box-shadow:0 1px 2px rgba(20,19,42,.04);
}
.header-inner{
  position:relative;
  display:flex;align-items:center;gap:28px;
  min-height:64px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{display:inline-flex;width:24px;height:24px}
.brand__mark svg{width:100%;height:100%}
.brand__text{font-family:var(--font-title);font-size:20px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.brand__text em{font-style:normal;font-family:var(--font-body);font-size:12px;font-weight:600;color:var(--gold);letter-spacing:.12em;margin-left:3px;vertical-align:2px}
.site-footer .brand__text{color:#fff}

.nav-links{display:flex;align-items:center;gap:26px;margin:0}
.nav-link{
  position:relative;
  font-size:15px;color:var(--muted);
  padding:22px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;
  background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}

.header-tools{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search input{
  width:196px;height:38px;padding:0 38px 0 16px;
  border:1px solid var(--border);border-radius:var(--radius-pill);
  background:#FBFAF8;font-size:14px;color:var(--text);
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.nav-search input::placeholder{color:#9A96A6}
.nav-search input:focus{
  outline:none;background:#fff;border-color:var(--ink);
  box-shadow:0 0 0 3px rgba(44,42,74,.10);
}
.nav-search button{
  position:absolute;right:6px;width:30px;height:30px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;color:var(--muted);
}
.nav-search button:hover{color:var(--ink);background:#F1EEE8}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--border);border-radius:12px;
  align-items:center;justify-content:center;color:var(--ink);background:#fff;
}
.nav-toggle:hover{background:#F7F5F1}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn i{font-size:14px}
.btn-gold{background:var(--gold);color:#241E0C;box-shadow:var(--shadow-1)}
.btn-gold:hover{background:#C8932E;transform:translateY(-2px);box-shadow:var(--shadow-2);color:#1B1608}
.btn-gold:active{transform:translateY(1px)}
.btn-primary{background:var(--ink);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:#22203C;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-2px)}
.btn-outline{background:transparent;border-color:var(--border);color:var(--ink)}
.btn-outline:hover{background:rgba(44,42,74,.06);border-color:rgba(44,42,74,.35)}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:var(--radius-pill)}
.btn-block{width:100%}

/* ---------- 页头横幅 ---------- */
.page-banner{
  position:relative;overflow:hidden;
  background-image:linear-gradient(180deg,rgba(20,19,42,.62),rgba(20,19,42,.78)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  color:#fff;
  padding:56px 0 64px;
  min-height:320px;
  display:flex;align-items:center;
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle,rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:64px 64px;opacity:.13;pointer-events:none;
}
.page-banner .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:22px}
.breadcrumb a:hover{color:#fff;border-bottom:2px solid var(--gold)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:var(--gold)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;text-transform:none;
  color:var(--gold);background:rgba(217,163,60,.14);
  border:1px solid rgba(217,163,60,.42);
  padding:6px 14px;border-radius:var(--radius-pill);margin-bottom:18px;
}
.page-banner h1{
  color:#fff;font-size:40px;line-height:1.28;max-width:820px;margin:0 0 18px;font-weight:700;
}
.page-banner p{max-width:660px;font-size:17px;color:rgba(255,255,255,.86);margin-bottom:26px}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 通用标题区 ---------- */
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head .kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--teal);
  background:var(--teal-soft);border:1px solid rgba(79,124,130,.28);
  padding:5px 13px;border-radius:var(--radius-pill);margin-bottom:14px;letter-spacing:.08em;
}
.sec-head h2{font-size:30px;margin-bottom:14px}
.sec-head p{color:var(--muted);margin:0}

/* ---------- 两栏正文 ---------- */
.content-grid{margin-top:8px}
.toc{
  position:sticky;top:88px;
  border-left:2px solid var(--border);
  padding-left:0;
}
.toc h3{
  font-family:var(--font-body);font-size:13px;letter-spacing:.14em;
  color:var(--muted);font-weight:600;margin:0 0 14px;
}
.toc ul{list-style:none;margin:0;padding:0}
.toc li{margin-bottom:2px}
.toc a{
  display:block;padding:10px 0 10px 18px;font-size:15px;color:var(--muted);
  border-left:2px solid transparent;margin-left:-2px;line-height:1.5;
}
.toc a:hover{color:var(--ink);border-left-color:var(--gold);background:rgba(217,163,60,.06)}
.toc .toc-note{
  margin-top:22px;padding:16px;border:1px solid var(--border);border-radius:var(--radius-card);
  background:#fff;box-shadow:var(--shadow-1);font-size:14px;color:var(--muted);line-height:1.7;
}
.toc .toc-note strong{color:var(--ink);display:block;margin-bottom:6px;font-size:15px}

.longform{max-width:820px}
.longform h2{
  position:relative;font-size:30px;padding-left:18px;margin-top:0;margin-bottom:18px;
}
.longform h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.2em;width:4px;border-radius:2px;background:var(--gold);
}
.longform h2 + p{font-size:17.5px;color:var(--ink-soft)}
.longform h3{font-size:22px;margin:34px 0 14px}
.longform p{color:#3A373F}
.longform .block{margin-bottom:56px}
.longform .block:last-child{margin-bottom:0}
.longform ul{list-style:none;padding-left:0}
.longform ul li{
  position:relative;padding-left:26px;color:#3A373F;margin-bottom:10px;
}
.longform ul li::before{
  content:"";position:absolute;left:6px;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--teal);transform:rotate(45deg);
}
.longform ul li strong{color:var(--ink)}
.figure{margin:28px 0 8px}
.figure img{border-radius:var(--radius-img);width:100%;aspect-ratio:16/10;object-fit:cover;box-shadow:var(--shadow-1)}
.figure figcaption{font-size:13px;color:var(--muted);margin-top:10px}

.callout-line{
  border-left:3px solid var(--ink);background:#fff;border-radius:0 var(--radius-card) var(--radius-card) 0;
  padding:20px 24px;color:#3A373F;font-size:16px;box-shadow:var(--shadow-1);
}
.callout-line strong{color:var(--ink)}

/* ---------- 卡片墙 ---------- */
.wall{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.wall-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.wall-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(44,42,74,.2)}
.wall-card img{width:100%;object-fit:cover;aspect-ratio:16/10;background:#EFECE6}
.wall-card--tall img{aspect-ratio:4/5}
.wall-card--wide{grid-column:span 2}
.wall-card--wide img{aspect-ratio:16/7}
.wall-card body{display:block}
.wall-card__body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.wall-card__index{
  font-family:var(--font-title);font-size:13px;color:var(--gold);
  letter-spacing:.16em;margin-bottom:8px;font-variant-numeric:tabular-nums;
}
.wall-card h3{font-size:19px;margin:0 0 8px}
.wall-card p{font-size:15px;color:var(--muted);margin:0;line-height:1.75}
.wall-card__tag{
  margin-top:16px;align-self:flex-start;
  font-size:13px;color:var(--teal);background:var(--teal-soft);
  border:1px solid rgba(79,124,130,.25);border-radius:var(--radius-pill);padding:4px 12px;
}

/* ---------- 对比表 ---------- */
.table-wrap{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow-x:auto;
}
table.compare{width:100%;border-collapse:collapse;min-width:760px}
table.compare thead th{
  background:var(--deep);color:#fff;font-family:var(--font-title);
  font-size:16px;font-weight:700;text-align:left;padding:18px 22px;letter-spacing:.02em;
}
table.compare thead th:first-child{
  background:#0F0E20;color:rgba(255,255,255,.72);font-family:var(--font-body);
  font-size:14px;letter-spacing:.1em;
}
table.compare tbody td{
  padding:16px 22px;font-size:15px;color:#3A373F;border-bottom:1px solid var(--border);vertical-align:top;
}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare tbody tr:nth-child(even) td{background:#FBFAF7}
table.compare tbody td:first-child{color:var(--muted);font-size:14px;white-space:nowrap}
table.compare tbody tr:hover td{background:#F4F2ED}

/* ---------- 数据条与徽章 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:44px}
.stat{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px 22px;box-shadow:var(--shadow-1);
}
.stat .stat-num{
  font-family:var(--font-title);font-size:34px;color:var(--ink);font-weight:700;
  line-height:1.1;font-variant-numeric:tabular-nums;
}
.stat .stat-num span{font-size:16px;color:var(--gold);margin-left:2px}
.stat .stat-label{font-size:13px;color:var(--muted);margin-top:8px;letter-spacing:.02em}
.badges{display:flex;flex-wrap:wrap;gap:10px}
.badge{
  font-size:13px;color:var(--muted);background:#F1EEE8;
  border:1px solid var(--border);border-radius:var(--radius-pill);padding:7px 15px;
}
.badge--gold{color:#8A6416;background:var(--gold-soft);border-color:rgba(217,163,60,.32)}
.badge--teal{color:#31606A;background:var(--teal-soft);border-color:rgba(79,124,130,.28)}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto}
.faq-list details{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);margin-bottom:14px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-list details[open]{border-color:rgba(44,42,74,.22);box-shadow:var(--shadow-2)}
.faq-list summary{
  list-style:none;cursor:pointer;padding:20px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-family:var(--font-title);font-size:19px;font-weight:700;color:var(--ink);
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:hover{background:#FBFAF7}
.faq-list summary .faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--border);display:inline-flex;align-items:center;justify-content:center;
  color:var(--muted);font-size:14px;transition:transform .2s ease,background-color .2s ease,color .2s ease;
}
.faq-list details[open] summary .faq-icon{background:var(--gold);border-color:var(--gold);color:#241E0C;transform:rotate(45deg)}
.faq-list .faq-body{padding:0 24px 22px;font-size:15px;color:#4A4753;line-height:1.8;max-width:760px}

/* ---------- 相关链接 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.related-card{
  display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);padding:16px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(44,42,74,.2)}
.related-card img{width:96px;height:72px;object-fit:cover;border-radius:10px;flex:0 0 auto}
.related-card h3{font-size:17px;margin:0 0 4px}
.related-card span{font-size:13px;color:var(--muted)}

/* ---------- 咨询表单与 CTA ---------- */
.cta-band{
  background:var(--deep);color:#fff;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:70px 70px;opacity:.1;pointer-events:none;
}
.cta-band .container{position:relative;z-index:2}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.cta-copy h2{color:#fff;font-size:30px;margin-bottom:16px}
.cta-copy p{color:rgba(255,255,255,.78);font-size:16px}
.cta-points{list-style:none;padding:0;margin:24px 0 0}
.cta-points li{
  position:relative;padding-left:26px;color:rgba(255,255,255,.82);font-size:15px;margin-bottom:10px;
}
.cta-points li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;
  position:absolute;left:0;top:.35em;color:var(--gold);
}
.form-card{
  background:#fff;border-radius:var(--radius-card);padding:28px;box-shadow:0 20px 40px -28px rgba(0,0,0,.5);
  color:var(--text);
}
.form-card h3{font-size:20px;margin:0 0 6px}
.form-card > p{font-size:14px;color:var(--muted);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:var(--ink);font-weight:600;margin-bottom:6px}
.field input,.field textarea,.field select{
  width:100%;height:46px;padding:0 18px;border:1px solid var(--border);border-radius:var(--radius-pill);
  background:#FBFAF8;font-size:15px;transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.field textarea{
  height:auto;min-height:96px;padding:13px 18px;border-radius:16px;resize:vertical;line-height:1.7;
}
.field input:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:var(--ink);box-shadow:0 0 0 3px rgba(44,42,74,.12);
}
.field .hint{font-size:13px;color:var(--muted);margin-top:6px}
.form-note{font-size:13px;color:var(--muted);margin-top:14px;line-height:1.7}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:72px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{color:rgba(255,255,255,.62);line-height:1.8;max-width:340px;margin:0}
.footer-col h4{
  font-family:var(--font-body);font-size:14px;font-weight:600;letter-spacing:.08em;
  color:#fff;margin:0 0 16px;
}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.68);font-size:14px;border-bottom:1px solid transparent}
.footer-col a:hover{color:#fff;border-bottom-color:var(--gold)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 浮动咨询 ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:90;
  display:inline-flex;align-items:center;gap:10px;
  height:50px;padding:0 22px;border-radius:var(--radius-pill);
  background:var(--gold);color:#241E0C;font-weight:700;font-size:15px;
  box-shadow:0 14px 30px -14px rgba(20,19,42,.5);
  opacity:0;pointer-events:none;transform:translateY(12px);
  transition:opacity .25s ease,transform .25s ease,background-color .2s ease;
}
.float-cta.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.float-cta:hover{background:#C8932E}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  :root{--container:1200px}
}
@media (min-width:1440px){
  :root{--container:1320px}
}
@media (max-width:1023px){
  :root{--section-y:64px}
  body{font-size:16px}
  .nav-toggle{display:inline-flex;order:3}
  .nav-links{
    position:absolute;top:100%;left:-24px;right:-24px;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;padding:6px 24px 18px;border-bottom:1px solid var(--border);
    box-shadow:var(--shadow-2);display:none;
  }
  .nav-links.is-open{display:flex}
  .nav-link{padding:14px 0;border-bottom:1px solid var(--border);font-size:16px}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--ink)}
  .header-tools{margin-left:auto}
  .nav-search{display:none}
  .header-tools .btn{height:38px;padding:0 16px;font-size:14px}
  .page-banner h1{font-size:30px}
  .page-banner p{font-size:16px}
  .longform h2{font-size:24px}
  .sec-head h2{font-size:24px}
  .longform h3{font-size:19px}
  .wall{grid-template-columns:repeat(2,1fr)}
  .wall-card--wide{grid-column:span 2}
  .stats{grid-template-columns:repeat(2,1fr)}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .toc{position:static;margin-bottom:36px;border-left:0;border-top:1px solid var(--border);padding-top:20px}
  .toc ul{display:flex;flex-wrap:wrap;gap:10px}
  .toc a{border:1px solid var(--border);border-radius:var(--radius-pill);padding:8px 16px;margin-left:0;background:#fff}
  .toc a:hover{border-color:var(--gold)}
  .toc .toc-note{display:none}
}
@media (max-width:639px){
  :root{--section-y:48px}
  .container{padding:0 16px}
  .header-inner{min-height:56px;gap:12px}
  body{font-size:16px}
  .page-banner{padding:40px 0 48px;min-height:280px}
  .page-banner h1{font-size:28px}
  .banner-actions .btn{width:100%}
  .wall{grid-template-columns:1fr}
  .wall-card--wide{grid-column:span 1}
  .wall-card--wide img{aspect-ratio:16/10}
  .stats{grid-template-columns:1fr;gap:16px}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding-bottom:96px}
  .float-cta{
    left:16px;right:16px;bottom:calc(12px + env(safe-area-inset-bottom));
    height:56px;justify-content:center;border-radius:16px;
  }
  .form-card{padding:22px 18px}
  .longform h2{font-size:22px}
  .sec-head h2{font-size:22px}
  .faq-list summary{font-size:17px;padding:18px 18px}
  .faq-list .faq-body{padding:0 18px 18px}
}

/* roulang page: category3 */
:root{
  --ink:#2C2A4A;
  --ink-soft:#3B3960;
  --gold:#D9A33C;
  --gold-deep:#BF8B27;
  --nebula:#4F7C82;
  --deep:#14132A;
  --paper:#F7F5F1;
  --card:#FFFFFF;
  --line:#E6E2DA;
  --text:#211F2B;
  --muted:#6B6779;
  --err:#C4553B;
  --r-card:14px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,19,42,.05);
  --sh-2:0 12px 28px -18px rgba(20,19,42,.28);
  --font-title:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --font-body:'PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
  letter-spacing:.01em;
}
img{max-width:100%;display:block;border-radius:12px}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,box-shadow .18s ease}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{font-family:var(--font-title);color:var(--ink);line-height:1.3;margin:0;font-style:normal}
h1{font-size:40px;font-weight:700}
h2{font-size:30px;font-weight:700}
h3{font-size:22px;font-weight:700}
h4{font-size:19px;font-weight:700}
p{margin:0}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:6px}

/* ---------- 容器与板块 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1320px}}
@media (max-width:640px){.container{padding:0 16px}}
.section{padding:96px 0}
.section--tight{padding:72px 0}
@media (max-width:1023px){
  .section{padding:64px 0}
  .section--tight{padding:52px 0}
}
@media (max-width:640px){
  .section{padding:48px 0}
  .section--tight{padding:40px 0}
}
@media (max-width:1023px){
  h1{font-size:32px}
  h2{font-size:26px}
  h3{font-size:20px}
}
@media (max-width:640px){
  h1{font-size:28px}
  h2{font-size:24px}
  h3{font-size:19px}
  h4{font-size:17px}
  body{font-size:16px}
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.header-inner{display:flex;align-items:center;gap:28px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{width:26px;height:26px;display:inline-flex;align-items:center;justify-content:center}
.brand__mark svg{width:26px;height:26px}
.brand__text{font-family:var(--font-title);font-weight:700;font-size:20px;color:var(--ink);letter-spacing:.02em;line-height:1}
.brand__text em{font-style:normal;font-family:var(--font-body);font-weight:500;font-size:12px;color:var(--muted);letter-spacing:.14em;margin-left:6px;text-transform:lowercase}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-link{
  position:relative;font-size:15px;color:var(--muted);padding:20px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  background:var(--ink);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-tools{display:flex;align-items:center;gap:12px;margin-left:auto}
.search{position:relative;display:block}
.search input{
  width:210px;height:38px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--paper);
  padding:0 16px 0 36px;font-size:14px;color:var(--text);
  transition:border-color .18s ease,box-shadow .18s ease,width .2s ease;
}
.search input::placeholder{color:#9A97A8}
.search input:focus{outline:none;border-color:var(--ink);background:#fff;box-shadow:0 0 0 3px rgba(44,42,74,.1)}
.search i{position:absolute;left:14px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--muted);pointer-events:none}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn--sm{height:38px;padding:0 18px;font-size:14px;border-radius:var(--r-pill)}
.btn--primary{background:var(--gold);color:#1D1B2E}
.btn--primary:hover{background:var(--gold-deep);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn--primary:active{transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn--ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{background:rgba(44,42,74,.08);border-color:rgba(44,42,74,.24)}
.btn--dark{background:var(--ink);color:#fff}
.btn--dark:hover{background:var(--ink-soft);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn--onDark{background:#fff;color:var(--ink)}
.btn--onDark:hover{background:#F1EEE7;transform:translateY(-2px)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;
  align-items:center;justify-content:center;cursor:pointer;color:var(--ink);
}
@media (max-width:1023px){
  .header-inner{height:56px;gap:12px}
  .nav-toggle{display:inline-flex;order:3}
  .nav-tools{margin-left:auto;order:2}
  .search{display:none}
  .nav-tools .btn--sm{height:34px;padding:0 14px;font-size:13px}
  .nav-links{
    position:fixed;top:56px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    margin:0;padding:8px 16px 20px;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--sh-2);display:none;
  }
  .site-header.nav-open .nav-links{display:flex}
  .nav-link{padding:14px 4px;border-bottom:1px solid var(--line);font-size:16px}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--gold-deep)}
}
@media (max-width:640px){
  .brand__text{font-size:18px}
  .brand__text em{font-size:11px;margin-left:4px}
}

/* ---------- 标题带 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:44px 0 56px;
  background-color:#fff;
  background-image:
    linear-gradient(180deg, rgba(255,255,255,.94) 0%, rgba(247,245,241,.96) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(44,42,74,.16) 1px, transparent 1px);
  background-size:22px 22px;
  -webkit-mask-image:linear-gradient(100deg, transparent 0%, #000 55%);
  mask-image:linear-gradient(100deg, transparent 0%, #000 55%);
}
.page-hero .container{position:relative;z-index:1}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:20px}
.crumbs a:hover{color:var(--ink);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px}
.crumbs span.sep{color:#BDB9C6}
.crumbs .current{color:var(--gold-deep);font-weight:600}
.hero-grid{display:grid;grid-template-columns:1.45fr .85fr;gap:48px;align-items:center}
@media (max-width:1023px){.hero-grid{grid-template-columns:1fr;gap:28px}}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 14px;
  border-radius:var(--r-pill);font-size:13px;
  background:rgba(79,124,130,.1);border:1px solid rgba(79,124,130,.34);color:#3C6267;
}
.tag--gold{background:rgba(217,163,60,.12);border-color:rgba(217,163,60,.42);color:#8B6418}
.lede{font-size:18px;color:#4A4757;line-height:1.9;margin-top:18px;max-width:660px}
@media (max-width:640px){.lede{font-size:16px}}
.hero-figure{margin:0}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);
  box-shadow:var(--sh-2);border:1px solid var(--line);
}
.hero-figure figcaption{font-size:13px;color:var(--muted);margin-top:10px}
@media (max-width:1023px){.hero-figure{display:none}}

/* ---------- 通用板块标题 ---------- */
.section-head{max-width:720px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.16em;
  color:var(--gold-deep);font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--gold);border-radius:2px}
.section-head p{margin-top:14px;font-size:16px;color:#55525F}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center}
.section-head--center .eyebrow{justify-content:center}

/* ---------- 瀑布卡片墙 ---------- */
.masonry{column-count:2;column-gap:24px}
@media (max-width:768px){.masonry{column-count:1}}
.m-card{
  break-inside:avoid;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
  margin:0 0 24px;display:block;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.m-card:hover{transform:translateY(-4px);border-color:rgba(44,42,74,.2);box-shadow:var(--sh-2)}
.m-card__media{display:block;overflow:hidden;background:#EDEAE3;aspect-ratio:16/10}
.m-card__media--43{aspect-ratio:4/3}
.m-card__media--32{aspect-ratio:3/2}
.m-card__media--11{aspect-ratio:1/1}
.m-card__media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s ease}
.m-card:hover .m-card__media img{transform:scale(1.03)}
.m-card__body{padding:22px 22px 24px}
.m-card__body h3{font-size:19px;margin-bottom:10px}
.m-card__body p{font-size:15px;color:#514E5E;line-height:1.8}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:13px;background:rgba(79,124,130,.1);border:1px solid rgba(79,124,130,.32);color:#3C6267;
  margin-bottom:12px;
}
.badge--gold{background:rgba(217,163,60,.12);border-color:rgba(217,163,60,.42);color:#8B6418}
.meta-list{
  list-style:none;margin-top:16px;padding-top:16px;border-top:1px dashed var(--line);
  display:flex;flex-wrap:wrap;gap:8px 20px;font-size:13px;color:var(--muted);
}
.meta-list li{display:inline-flex;align-items:center;gap:6px}
.meta-list i{color:var(--gold-deep);font-size:12px}
.card-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:600;color:var(--ink);
}
.card-link:hover{color:var(--gold-deep)}
.card-link:hover::after{transform:translateX(3px)}
.card-link::after{content:"→";transition:transform .2s ease}

/* ---------- 流程条 ---------- */
.flow-wrap{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.steps{list-style:none;display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin-top:8px;counter-reset:step}
.step{position:relative;padding:58px 26px 0 0}
.step__num{
  position:absolute;top:0;left:0;width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:#fff;border:2px solid var(--gold);color:var(--ink);
  font-size:14px;font-weight:700;letter-spacing:.05em;z-index:2;
}
.step::before{
  content:"";position:absolute;top:22px;left:44px;right:0;height:2px;
  background:linear-gradient(90deg,rgba(217,163,60,.65),rgba(217,163,60,.12));
}
.step:last-child::before{display:none}
.step h3{font-size:19px;margin-bottom:10px}
.step p{font-size:14px;color:#55525F;line-height:1.8}
@media (max-width:1023px){
  .steps{grid-template-columns:1fr 1fr;gap:26px 20px}
  .step{padding:52px 0 0}
  .step::before{display:none}
}
@media (max-width:640px){
  .steps{grid-template-columns:1fr;gap:26px}
}

/* ---------- 证言 ---------- */
.quotes{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media (max-width:768px){.quotes{grid-template-columns:1fr}}
.quote{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px 28px 28px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.quote:hover{transform:translateY(-4px);border-color:rgba(44,42,74,.18);box-shadow:var(--sh-2)}
.quote::before{
  content:"”";position:absolute;top:6px;left:22px;font-family:var(--font-title);
  font-size:64px;line-height:1;color:rgba(217,163,60,.32);
}
.quote blockquote{margin:0;padding-top:26px;font-size:16px;line-height:1.9;color:#3B3948}
.quote figcaption{margin-top:20px;padding-top:16px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
.quote figcaption strong{color:var(--ink);font-weight:600;font-family:var(--font-title)}
.quote--small{padding:24px 24px 22px}
.quote--small blockquote{font-size:15px;padding-top:18px}
.quotes--stack{display:grid;grid-template-columns:1fr;gap:20px;align-content:start}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
@media (max-width:1023px){.faq-layout{grid-template-columns:1fr;gap:28px}}
.faq-aside{position:sticky;top:88px}
@media (max-width:1023px){.faq-aside{position:static}}
.faq-aside p{margin-top:14px;font-size:15px;color:#55525F}
.faq{border-top:1px solid var(--line)}
.faq__item{border-bottom:1px solid var(--line)}
.faq__item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px;font-family:var(--font-title);font-size:17px;font-weight:700;color:var(--ink);
  transition:background-color .18s ease;
}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary:hover{background:rgba(44,42,74,.035)}
.faq__item summary::after{
  content:"+";flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--gold-deep);font-size:16px;font-weight:400;
  transition:transform .2s ease,background-color .2s ease;
}
.faq__item[open] summary::after{content:"−";background:rgba(217,163,60,.12);border-color:rgba(217,163,60,.42)}
.faq__answer{padding:0 4px 24px;font-size:15px;line-height:1.85;color:#4E4B5A;max-width:760px}

/* ---------- 表单 ---------- */
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
@media (max-width:1023px){.contact-grid{grid-template-columns:1fr;gap:32px}}
.contact-panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-1)}
.contact-points{list-style:none;margin-top:24px;display:grid;gap:14px}
.contact-points li{display:flex;gap:12px;font-size:15px;color:#4E4B5A}
.contact-points i{color:var(--gold-deep);margin-top:6px;font-size:13px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:640px){.form-row{grid-template-columns:1fr}}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field input,.field select{
  width:100%;height:46px;padding:0 18px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{
  width:100%;min-height:112px;padding:14px 18px;border-radius:18px;
  border:1px solid var(--line);background:#fff;font-size:15px;line-height:1.7;resize:vertical;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(44,42,74,.12);
}
.field .hint{font-size:13px;color:var(--muted);margin-top:8px}
.form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:6px}
@media (max-width:640px){.form-actions .btn{width:100%}}

/* ---------- 深色 CTA ---------- */
.cta-band{
  background:var(--deep);color:#D7D5E2;padding:64px 0;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px, transparent 1px);
  background-size:26px 26px;
}
.cta-band .container{position:relative;z-index:1}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{color:#fff;font-size:28px;max-width:640px}
.cta-inner p{margin-top:12px;font-size:15px;color:#B7B4C6;max-width:620px}
@media (max-width:640px){
  .cta-band{padding:48px 0}
  .cta-inner h2{font-size:24px}
  .cta-inner .btn{width:100%}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:#C9C7D6;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:34px}}
@media (max-width:640px){.footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px}}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.9;color:#B7B4C6;max-width:360px}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer-col ul{list-style:none;display:grid;gap:10px}
.footer-col a{font-size:14px;color:#B7B4C6}
.footer-col a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:14px;color:#9B98AC;
}

/* ---------- 浮动咨询 ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:80;
  display:flex;flex-direction:column;align-items:flex-end;gap:10px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s ease,transform .24s ease,visibility .24s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none}
.float-cta__btn{
  display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 22px;
  border:none;border-radius:var(--r-pill);background:var(--gold);color:#1D1B2E;
  font-size:15px;font-weight:600;cursor:pointer;box-shadow:0 12px 28px -14px rgba(20,19,42,.5);
  transition:background-color .18s ease,transform .18s ease;
}
.float-cta__btn:hover{background:var(--gold-deep);transform:translateY(-2px)}
.float-cta__panel{
  display:none;flex-direction:column;min-width:200px;padding:8px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-2);
}
.float-cta.is-open .float-cta__panel{display:flex}
.float-cta__panel a{padding:10px 14px;border-radius:10px;font-size:14px;color:var(--ink)}
.float-cta__panel a:hover{background:rgba(44,42,74,.06)}
@media (max-width:640px){
  body{padding-bottom:64px}
  .float-cta{
    left:0;right:0;bottom:0;height:56px;padding:0 16px env(safe-area-inset-bottom);
    flex-direction:row;align-items:center;justify-content:space-between;
    background:#fff;border-top:1px solid var(--line);
    box-shadow:0 -8px 22px -14px rgba(20,19,42,.45);
    transform:translateY(100%);
  }
  .float-cta.is-visible{transform:none}
  .float-cta__btn{flex:1;height:40px;justify-content:center;box-shadow:none}
  .float-cta__panel{position:absolute;left:16px;right:16px;bottom:66px;min-width:0}
}

/* ---------- 辅助 ---------- */
.divider{height:1px;background:var(--line);border:none;margin:0}
.text-link{font-size:14px;font-weight:600;color:var(--ink);border-bottom:2px solid transparent;transition:border-color .18s ease,color .18s ease}
.text-link:hover{color:var(--gold-deep);border-color:var(--gold)}
.back-home{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
.back-home:hover{color:var(--ink)}