/* roulang page: index */
:root{
  --ink:#0E3B43;
  --ink-2:#125A63;
  --mint:#17B890;
  --sand:#F2A65A;
  --text:#10201F;
  --muted:#5B6B69;
  --bg:#F6F8F7;
  --card:#FFFFFF;
  --line:#E3E9E7;
  --brand-grad:linear-gradient(135deg,#0E3B43 0%,#12707A 55%,#17B890 100%);
  --radius-card:20px;
  --radius-lg:28px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(14,59,67,.06);
  --shadow-2:0 8px 24px -12px rgba(14,59,67,.18);
  --shadow-3:0 24px 60px -24px rgba(14,59,67,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --gap:24px;
  --section:88px;
}
*,*::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:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--ink-2);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--mint)}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:15px;color:var(--text)}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:var(--section) 0}
.section--tight{padding:64px 0}
.section-head{max-width:720px;margin-bottom:28px}
.section-head h2{font-size:clamp(24px,2.6vw,36px);line-height:1.25}
.section-head .lead{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.9}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--ink-2);background:#E8F6F1;
  padding:6px 14px;border-radius:var(--radius-pill);margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--mint)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand-grad);color:#fff;box-shadow:var(--shadow-2)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-3)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(14,59,67,.28)}
.btn-ghost:hover{border-color:var(--ink);background:#fff;color:var(--ink);transform:translateY(-2px)}
.btn-white{background:#fff;color:var(--ink);box-shadow:var(--shadow-2)}
.btn-white:hover{color:var(--ink-2);transform:translateY(-2px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);box-shadow:var(--shadow-1);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-2)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:32px;height:32px;border-radius:9px;background:var(--brand-grad);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px -8px rgba(14,59,67,.6);
}
.logo-mark svg{width:18px;height:18px;display:block}
.logo-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.logo:hover .logo-text{color:var(--ink-2)}
.nav{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;
  font-size:15px;color:rgba(16,32,31,.72);border-radius:10px;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  border-radius:2px;background:var(--brand-grad);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--ink);background:#F3F8F6}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search{
  display:flex;align-items:center;gap:8px;height:40px;width:220px;
  padding:0 14px;border-radius:var(--radius-pill);
  background:var(--bg);border:1px solid transparent;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.search:focus-within{background:#fff;border-color:var(--mint);box-shadow:0 0 0 4px rgba(23,184,144,.16)}
.search svg{width:16px;height:16px;flex-shrink:0;color:var(--muted)}
.search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;line-height:1}
.search input::placeholder{color:#93A3A0}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .24s var(--ease)
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;min-height:620px;
  display:flex;flex-direction:column;justify-content:center;
  background:var(--ink) url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(14,59,67,.92) 0%,rgba(18,112,122,.66) 58%,rgba(23,184,144,.42) 100%);
}
.hero-inner{
  position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;
  gap:56px;align-items:center;padding:72px 0 56px;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  padding:6px 14px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  color:#EAFBF5;letter-spacing:.04em;margin-bottom:20px;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--mint);display:inline-block}
.hero h1{
  font-size:clamp(32px,4.2vw,56px);line-height:1.15;letter-spacing:-.02em;font-weight:700;
  color:#fff;max-width:15em;
}
.hero-sub{
  margin-top:20px;font-size:18px;line-height:1.75;color:rgba(255,255,255,.86);max-width:26em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-visual{position:relative}
.hero-card{
  border-radius:24px;overflow:hidden;box-shadow:var(--shadow-3);
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.1);
}
.hero-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#EEF2F1}
.hero-float{
  position:absolute;display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.95);border-radius:16px;padding:10px 16px;
  box-shadow:var(--shadow-2);color:var(--ink);
}
.hero-float strong{font-size:20px;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.hero-float span{font-size:12px;color:var(--muted);line-height:1.4}
.hero-float--a{left:-18px;bottom:34px}
.hero-float--b{right:-10px;top:28px}
.hero-stats{
  position:relative;z-index:2;padding:0 0 56px;
}
.hero-stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
}
.stat-pill{
  display:flex;flex-direction:column;gap:2px;
  padding:18px 22px;border-radius:18px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.stat-pill strong{font-size:30px;line-height:1.1;font-weight:700;font-variant-numeric:tabular-nums;color:#fff}
.stat-pill span{font-size:12px;color:rgba(255,255,255,.78);letter-spacing:.04em}

/* ---------- value strip ---------- */
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.value-item{
  display:flex;gap:16px;align-items:flex-start;padding:26px 24px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.value-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#CFE7DF}
.value-num{
  flex-shrink:0;width:40px;height:40px;border-radius:12px;background:#E8F6F1;color:var(--ink);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
  font-variant-numeric:tabular-nums;
}
.value-item h3{font-size:17px;margin-bottom:6px}
.value-item p{font-size:14px;line-height:1.8;color:var(--muted)}

/* ---------- features ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--gap)}
.feature-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#CFE7DF}
.feature-card--wide{grid-column:1 / -1;display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center}
.feature-icon{
  width:44px;height:44px;border-radius:14px;background:#E8F6F1;color:var(--ink);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.feature-icon svg{width:22px;height:22px}
.feature-card h3{font-size:20px;margin-bottom:10px}
.feature-card p{color:var(--muted);font-size:15px;line-height:1.9}
.link-more{
  display:inline-flex;align-items:center;gap:6px;margin-top:18px;
  font-size:14px;font-weight:600;color:var(--ink-2);
}
.link-more::after{content:"→";transition:transform .2s var(--ease)}
.link-more:hover{color:var(--mint)}
.link-more:hover::after{transform:translateX(4px)}
.feature-wide-visual{border-radius:16px;overflow:hidden;box-shadow:var(--shadow-2)}
.feature-wide-visual img{width:100%;aspect-ratio:16/9;object-fit:cover;background:#EEF2F1}

/* ---------- scenes ---------- */
.scene{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:36px 0;
}
.scene + .scene{border-top:1px solid var(--line)}
.scene:nth-child(even) .scene-media{order:2}
.scene-media{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-2)}
.scene-media img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#EEF2F1}
.scene-tag{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  color:var(--ink-2);background:#E8F6F1;border-radius:var(--radius-pill);
  padding:5px 12px;margin-bottom:14px;letter-spacing:.04em;
}
.scene h3{font-size:clamp(20px,2.2vw,26px);margin-bottom:14px}
.scene p{color:var(--muted);font-size:15px;line-height:1.9}
.scene-list{margin-top:18px;display:grid;gap:10px}
.scene-list li{position:relative;padding-left:20px;font-size:15px;color:var(--text);line-height:1.8}
.scene-list li::before{
  content:"";position:absolute;left:0;top:.68em;width:7px;height:7px;border-radius:50%;background:var(--mint);
}

/* ---------- news / cms ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;flex-wrap:wrap}
.news-head h2{font-size:clamp(24px,2.6vw,36px)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.news-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);color:inherit;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#CFE7DF;color:inherit}
.news-thumb{background:#EEF2F1;overflow:hidden}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px}
.chip{
  display:inline-flex;align-items:center;font-size:12px;font-weight:600;
  color:var(--ink-2);background:#E8F6F1;border-radius:var(--radius-pill);padding:4px 10px;
  letter-spacing:.03em;
}
.news-date{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.news-title{
  font-size:18px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-desc{
  font-size:14px;line-height:1.8;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-empty{
  background:var(--bg);border:1px dashed #D6E3DF;border-radius:var(--radius-card);
  padding:48px 32px;text-align:center;
}
.news-empty p{color:var(--muted);font-size:15px;margin-bottom:18px}

/* ---------- cases ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.case-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px 28px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;gap:16px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.case-metric{
  align-self:flex-start;font-size:22px;font-weight:700;font-variant-numeric:tabular-nums;
  color:var(--ink);padding:4px 16px;border-radius:var(--radius-pill);
  background:linear-gradient(#fff,#fff) padding-box,var(--brand-grad) border-box;
  border:1.5px solid transparent;
}
.case-quote{font-size:17px;line-height:1.8;color:var(--text)}
.case-foot{margin-top:auto;padding-top:8px;border-top:1px solid var(--line)}
.case-name{font-size:14px;font-weight:600;color:var(--ink)}
.case-trade{font-size:12px;color:var(--muted)}

/* ---------- pricing ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);align-items:stretch}
.price-card{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:34px 28px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.price-card--best{
  border:1.5px solid transparent;
  background:linear-gradient(#fff,#fff) padding-box,var(--brand-grad) border-box;
  box-shadow:var(--shadow-3);
}
.price-flag{
  position:absolute;top:-13px;left:28px;font-size:12px;font-weight:600;color:#fff;
  background:var(--brand-grad);border-radius:var(--radius-pill);padding:4px 14px;letter-spacing:.05em;
}
.price-name{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:6px}
.price-desc{font-size:13px;color:var(--muted);line-height:1.7;min-height:44px}
.price-amount{
  display:flex;align-items:baseline;gap:6px;margin:14px 0 20px;
  font-variant-numeric:tabular-nums;
}
.price-amount strong{font-size:36px;font-weight:700;letter-spacing:-.02em;color:var(--ink)}
.price-amount span{font-size:13px;color:var(--muted)}
.price-list{display:grid;gap:10px;margin-bottom:26px}
.price-list li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:var(--text)}
.price-list li svg{flex-shrink:0;width:16px;height:16px;margin-top:5px;color:var(--mint)}
.price-card .btn{margin-top:auto}
.price-note{margin-top:24px;font-size:13px;color:var(--muted);line-height:1.8}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:16px;
  margin-bottom:12px;box-shadow:var(--shadow-1);overflow:hidden;
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.faq-item[open]{box-shadow:var(--shadow-2);border-color:#CFE7DF}
.faq-item summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex-shrink:0;width:26px;height:26px;line-height:24px;text-align:center;
  font-size:20px;font-weight:400;color:var(--ink-2);border-radius:50%;background:#E8F6F1;
  transition:transform .24s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-answer{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--muted)}

/* ---------- form ---------- */
.form-panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:40px;box-shadow:var(--shadow-2);
  display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start;
}
.form-copy h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:14px}
.form-copy p{color:var(--muted);font-size:15px;line-height:1.9}
.form-copy ul{margin-top:20px;display:grid;gap:10px}
.form-copy ul li{position:relative;padding-left:20px;font-size:14px;color:var(--text);line-height:1.8}
.form-copy ul li::before{content:"";position:absolute;left:0;top:.7em;width:7px;height:7px;border-radius:50%;background:var(--mint)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px}
.field--full{grid-column:1 / -1}
.field label{font-size:13px;font-weight:600;color:var(--ink)}
.field input,.field textarea{
  height:46px;padding:0 14px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:#fff;outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#9BAAA7}
.field input:focus,.field textarea:focus{border-color:var(--mint);box-shadow:0 0 0 4px rgba(23,184,144,.16)}
.field .hint{font-size:12px;color:var(--muted)}
.form-note{margin-top:14px;font-size:13px;color:var(--mint);font-weight:600}

/* ---------- cta ---------- */
.cta-band{
  margin:64px 0 0;border-radius:var(--radius-lg);background:var(--brand-grad);
  padding:56px 48px;color:#fff;display:flex;align-items:center;justify-content:space-between;
  gap:36px;box-shadow:var(--shadow-3);flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(24px,2.6vw,34px);color:#fff;max-width:20em}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.86);font-size:15px;line-height:1.8}

/* ---------- footer ---------- */
.site-footer{background:#0B2B31;color:rgba(255,255,255,.72);margin-top:64px;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-mark{box-shadow:none}
.footer-desc{font-size:14px;line-height:1.9;max-width:26em}
.footer-contact{margin-top:18px;display:grid;gap:6px;font-size:14px;font-variant-numeric:tabular-nums}
.footer-contact span{color:rgba(255,255,255,.56);font-size:12px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.56);
}
.footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom-links a{color:rgba(255,255,255,.68);font-size:13px}
.footer-bottom-links a:hover{color:#fff}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .hero-inner{gap:40px}
}
@media (max-width:1023px){
  :root{--section:64px}
  .container{padding:0 24px}
  .nav-toggle{display:flex}
  .nav{
    position:absolute;top:72px;left:0;right:0;margin:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-2);
    padding:12px 20px 20px;display:none;
  }
  .site-header.nav-open .nav{display:flex}
  .nav-link{height:44px;padding:0 12px;border-radius:10px}
  .nav-link::after{display:none}
  .nav-link.is-active{background:#F0F8F5}
  .header-actions .search{display:none}
  .hero-inner{grid-template-columns:1fr;gap:40px;padding:56px 0 40px}
  .hero{min-height:auto}
  .hero-visual{order:2}
  .hero-float--a{left:8px;bottom:16px}
  .hero-float--b{right:8px;top:12px}
  .hero-stats-grid{grid-template-columns:repeat(2,1fr)}
  .value-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .feature-card--wide{grid-template-columns:1fr}
  .scene{grid-template-columns:1fr;gap:28px}
  .scene:nth-child(even) .scene-media{order:0}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:1fr}
  .price-grid{grid-template-columns:1fr}
  .form-panel{grid-template-columns:1fr;gap:28px;padding:32px}
  .cta-band{padding:40px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--section:48px}
  .container{padding:0 20px}
  .header-inner{height:64px;gap:12px}
  .nav{top:64px}
  .logo-text{font-size:15px}
  .logo-mark{width:28px;height:28px;border-radius:8px}
  .header-actions .btn{display:none}
  .hero h1{font-size:clamp(28px,7vw,36px)}
  .hero-sub{font-size:16px}
  .hero-actions .btn{flex:1 1 auto;min-width:140px}
  .hero-stats-grid{gap:10px}
  .stat-pill{padding:14px 16px}
  .stat-pill strong{font-size:24px}
  .news-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .form-panel{padding:26px 22px}
  .cta-band{padding:32px 24px;border-radius:22px}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .faq-item summary{font-size:16px;padding:18px 18px}
  .faq-answer{padding:0 18px 18px}
}
@media (max-width:479px){
  .hero-float--b{display:none}
  .value-item{padding:22px 18px}
  .feature-card{padding:24px 20px}
  .case-card{padding:24px 20px}
  .price-card{padding:28px 22px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --ink:#0E3B43;
  --ink-soft:#125A63;
  --mint:#17B890;
  --sand:#F2A65A;
  --text:#10201F;
  --muted:#5B6B69;
  --bg:#F6F8F7;
  --card:#FFFFFF;
  --line:#E3E9E7;
  --brand-gradient:linear-gradient(135deg,#0E3B43 0%,#12707A 55%,#17B890 100%);
  --r-sm:12px;
  --r-md:16px;
  --r-lg:20px;
  --r-xl:28px;
  --shadow-1:0 1px 2px rgba(14,59,67,.06);
  --shadow-2:0 8px 24px -12px rgba(14,59,67,.18);
  --shadow-3:0 24px 60px -24px rgba(14,59,67,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --gap:24px;
  --section:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
button{font:inherit;color:inherit}
input{font:inherit}
::selection{background:rgba(23,184,144,.22)}
.container{max-width:1200px;margin:0 auto;padding:0 32px}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--brand-gradient);color:#fff;box-shadow:0 8px 24px -12px rgba(14,59,67,.5)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-3)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink-soft);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-invert{background:#fff;color:var(--ink)}
.btn-invert:hover{transform:translateY(-2px);box-shadow:0 18px 40px -20px rgba(0,0,0,.45)}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none}

/* ---------- 页头导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:70;background:#fff;
  border-bottom:1px solid var(--line);box-shadow:var(--shadow-1);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-2)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;position:relative}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap;letter-spacing:-.01em}
.logo-mark{width:32px;height:32px;border-radius:10px;background:var(--brand-gradient);display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;box-shadow:0 6px 16px -8px rgba(14,59,67,.55)}
.logo-mark svg{width:20px;height:20px}
.nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{position:relative;padding:8px 12px;font-size:15px;color:rgba(16,32,31,.7);border-radius:8px;transition:color .2s var(--ease),background .2s var(--ease)}
.nav-link::after{content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--ink),var(--mint));transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease)}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search{position:relative;display:flex;align-items:center}
.search svg{position:absolute;left:13px;width:16px;height:16px;color:var(--muted);pointer-events:none}
.search input{
  width:220px;height:40px;border-radius:999px;border:1px solid transparent;
  background:var(--bg);padding:0 16px 0 36px;font-size:14px;color:var(--text);outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.search input::placeholder{color:#8A9997}
.search input:focus{background:#fff;border-color:var(--ink-soft);box-shadow:0 0 0 4px rgba(23,184,144,.16)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;
  align-items:center;justify-content:center;cursor:pointer;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform .24s var(--ease),opacity .2s var(--ease);
}
.nav-toggle span{position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--muted);padding-top:28px;padding-bottom:6px;
}
.crumb a{color:var(--muted);transition:color .2s var(--ease)}
.crumb a:hover{color:var(--ink)}
.crumb .sep{color:#C3CECB}
.crumb-current{color:var(--ink);font-weight:600;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.article-head{padding:18px 0 32px;border-bottom:1px solid var(--line)}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 14px;border-radius:999px;
  font-size:13px;font-weight:600;color:var(--ink-soft);background:rgba(23,184,144,.12);
  border:1px solid rgba(23,184,144,.28);letter-spacing:.01em;
}
.badge-sand{color:#8A4E12;background:rgba(242,166,90,.16);border-color:rgba(242,166,90,.4)}
.article-head h1{
  font-size:clamp(30px,3.8vw,46px);line-height:1.22;letter-spacing:-.02em;
  font-weight:700;color:var(--ink);margin:18px 0 20px;max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C3CECB}

/* ---------- 主体双栏 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;
  gap:44px;align-items:start;padding:40px 0 var(--section);
}
.article-main{min-width:0}
.article-cover{
  border-radius:var(--r-lg);overflow:hidden;background:#EEF2F1;
  box-shadow:var(--shadow-2);aspect-ratio:16/9;
}
.article-cover img{width:100%;height:100%;object-fit:cover}
.article-body{margin-top:36px;font-size:16px;line-height:1.95;color:#1B2A29;max-width:760px;word-break:break-word}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.5em}
.article-body h2{
  font-size:24px;line-height:1.35;font-weight:700;color:var(--ink);
  margin:2em 0 .75em;padding-left:14px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:4px;
  background:var(--brand-gradient);
}
.article-body h3{font-size:20px;line-height:1.45;font-weight:700;color:var(--ink);margin:1.7em 0 .6em}
.article-body h4{font-size:17px;font-weight:700;color:var(--ink);margin:1.4em 0 .5em}
.article-body ul,.article-body ol{margin:0 0 1.5em;padding-left:0}
.article-body ul li{position:relative;padding-left:20px;margin:.5em 0}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.82em;width:7px;height:7px;border-radius:50%;
  background:var(--mint);box-shadow:0 0 0 3px rgba(23,184,144,.14);
}
.article-body ol{counter-reset:li;padding-left:0}
.article-body ol li{position:relative;padding-left:30px;margin:.6em 0;counter-increment:li}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.18em;width:20px;height:20px;border-radius:6px;
  background:rgba(23,184,144,.14);color:var(--ink-soft);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;line-height:1;
}
.article-body a{color:var(--ink-soft);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;transition:color .2s var(--ease)}
.article-body a:hover{color:var(--mint)}
.article-body strong{color:var(--ink);font-weight:700}
.article-body blockquote{
  margin:1.8em 0;padding:18px 24px;background:var(--bg);color:var(--muted);
  border-left:4px solid var(--mint);border-radius:0 var(--r-md) var(--r-md) 0;
  font-size:15px;line-height:1.9;
}
.article-body img{border-radius:var(--r-md);margin:1.6em 0;height:auto}
.article-body figure{margin:1.8em 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;font-size:15px;
  margin:1.8em 0;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
}
.article-body th{background:var(--bg);color:var(--ink);font-weight:700;text-align:left}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line)}
.article-body tbody tr:nth-child(even) td{background:#FAFCFB}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
.article-body pre{background:#0B2B31;color:#DDEAE8;padding:18px 20px;border-radius:var(--r-md);overflow:auto;font-size:14px;line-height:1.7}

/* 空态 */
.empty-state{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:48px;text-align:center;max-width:760px;
}
.empty-state h2{font-size:22px;color:var(--ink);margin:0 0 10px}
.empty-state p{color:var(--muted);font-size:15px;margin:0 0 22px}

/* ---------- 标签 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:36px 0 0;max-width:760px;padding-top:24px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:13px;color:var(--muted);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.tag:hover{color:var(--ink);border-color:var(--ink-soft);transform:translateY(-2px)}

/* ---------- 侧栏 ---------- */
.sidebar{position:sticky;top:96px;display:grid;gap:20px}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--shadow-1);
}
.side-card h3{font-size:15px;font-weight:700;color:var(--ink);margin:0 0 14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:4px;height:14px;border-radius:4px;background:var(--brand-gradient)}
.toc-list{display:grid;gap:2px}
.toc-list a,.toc-list .toc-link{
  display:block;font-size:14px;color:var(--muted);line-height:1.6;padding:8px 10px;border-radius:10px;
  border-left:2px solid transparent;transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.toc-list a:hover{color:var(--ink);background:var(--bg);border-left-color:var(--mint)}
.toc-empty{font-size:13px;color:#8A9997;margin:0;line-height:1.8}
.side-links{display:grid;gap:8px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:14px;color:var(--text);padding:10px 12px;border-radius:var(--r-sm);
  background:var(--bg);transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.side-links a::after{content:"›";color:var(--mint);font-size:16px;line-height:1}
.side-links a:hover{background:rgba(23,184,144,.1);color:var(--ink);transform:translateX(2px)}
.side-cta{background:var(--brand-gradient);border:0;color:#fff;box-shadow:var(--shadow-2)}
.side-cta h3{color:#fff}
.side-cta h3::before{background:#fff}
.side-cta p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.84);margin:0 0 18px}
.side-cta .btn{width:100%}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 var(--section)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3;color:var(--ink);font-weight:700;letter-spacing:-.01em}
.section-head p{font-size:14px;color:var(--muted);margin-top:8px}
.link-more{font-size:14px;font-weight:600;color:var(--ink-soft);display:inline-flex;align-items:center;gap:6px}
.link-more span{transition:transform .22s var(--ease)}
.link-more:hover{color:var(--mint)}
.link-more:hover span{transform:translateX(4px)}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.news-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D3DEDB}
.news-thumb{aspect-ratio:16/9;background:#EEF2F1;overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{font-size:18px;line-height:1.45;color:var(--ink);font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:14px;line-height:1.75;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-time{font-size:13px;color:#8A9997;font-variant-numeric:tabular-nums;margin-top:auto}

/* ---------- 翻页 ---------- */
.pager{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;padding:0 0 var(--section)}
.pager-group{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 尾部 CTA ---------- */
.cta-band{
  background:var(--brand-gradient);border-radius:var(--r-xl);
  padding:56px;color:#fff;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;margin-bottom:64px;box-shadow:var(--shadow-3);
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.18),transparent 68%);
}
.cta-band h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;margin:0 0 10px;font-weight:700;letter-spacing:-.01em}
.cta-band p{font-size:15px;color:rgba(255,255,255,.84);margin:0;max-width:520px;line-height:1.8}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1}

/* ---------- 页脚 ---------- */
.site-footer{background:#0B2B31;color:rgba(255,255,255,.72);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:14px}
.footer-desc{font-size:14px;line-height:1.9;margin:0 0 20px;max-width:340px;color:rgba(255,255,255,.7)}
.footer-contact{display:grid;grid-template-columns:auto 1fr;gap:2px 12px;font-size:13px;line-height:2;color:rgba(255,255,255,.7)}
.footer-contact span{color:rgba(255,255,255,.42);font-size:12px;letter-spacing:.04em}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin:0 0 16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s var(--ease)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom-links a{color:rgba(255,255,255,.72)}
.footer-bottom-links a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 28px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  :root{--section:64px}
  .nav{
    position:absolute;top:72px;left:0;right:0;display:none;flex-direction:column;align-items:stretch;
    gap:2px;background:#fff;padding:12px 24px 24px;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-2);
  }
  .nav.is-open{display:flex}
  .nav-link{padding:0 8px;height:44px;display:flex;align-items:center;font-size:16px;border-radius:10px}
  .nav-link::after{display:none}
  .nav-link:hover,.nav-link.is-active{background:var(--bg)}
  .nav-toggle{display:inline-flex}
  .search{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px}
  .sidebar{position:static;top:auto;order:2;grid-template-columns:repeat(2,minmax(0,1fr))}
  .sidebar .side-cta{grid-column:1/-1}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .article-body{max-width:none}
  .tag-row{max-width:none}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .header-inner{height:64px;gap:12px}
  .nav{top:64px}
  .logo-text{font-size:15px}
  .header-actions .btn{display:none}
  .cta-band{padding:36px 26px;border-radius:var(--r-lg)}
  .sidebar{grid-template-columns:minmax(0,1fr)}
  .article-cover{border-radius:var(--r-md)}
  .empty-state{padding:32px 22px}
  .pager{flex-direction:column;align-items:stretch}
  .pager-group .btn{flex:1}
}
@media (max-width:599px){
  .container{padding:0 20px}
  :root{--section:48px}
  .card-grid{grid-template-columns:1fr}
  .article-head h1{margin:14px 0 16px}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:18px}
  .article-body table{font-size:14px}
  .article-body th,.article-body td{padding:10px 12px}
  .cta-band .cta-actions{width:100%}
  .cta-band .cta-actions .btn{flex:1}
}

/* roulang page: category1 */
:root{
  --ink:#0E3B43;
  --ink-2:#125A63;
  --mint:#17B890;
  --mint-soft:#E6F7F2;
  --sand:#F2A65A;
  --text:#10201F;
  --muted:#5B6B69;
  --bg:#F6F8F7;
  --card:#FFFFFF;
  --line:#E3E9E7;
  --skeleton:#EEF2F1;
  --grad:linear-gradient(135deg,#0E3B43 0%,#12707A 55%,#17B890 100%);
  --r-lg:28px;
  --r-card:20px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,59,67,.06);
  --sh-2:0 8px 24px -12px rgba(14,59,67,.18);
  --sh-3:0 24px 60px -24px rgba(14,59,67,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --gap:24px;
  --sec:88px;
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.9;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;font-feature-settings:"tnum";}
img{max-width:100%;display:block}
a{color:var(--ink-2);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--mint)}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);transition:box-shadow .24s var(--ease)}
.site-header.is-scrolled{box-shadow:var(--sh-2)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none}
.logo-mark{width:32px;height:32px;border-radius:9px;background:var(--grad);display:grid;place-items:center;
  box-shadow:0 8px 18px -10px rgba(14,59,67,.65);flex:0 0 auto}
.logo-mark svg{width:20px;height:20px;display:block}
.logo-text{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--ink);white-space:nowrap}
.nav{display:flex;align-items:center;gap:4px;flex:1 1 auto;justify-content:center}
.nav-link{position:relative;padding:9px 12px;font-size:15px;color:rgba(16,32,31,.72);border-radius:8px;
  transition:color .2s var(--ease),background .2s var(--ease)}
.nav-link::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease)}
.nav-link:hover{color:var(--ink);background:rgba(23,184,144,.05)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.search{display:flex;align-items:center;gap:8px;width:220px;height:40px;padding:0 14px;background:var(--bg);
  border:1px solid transparent;border-radius:var(--r-pill);transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease)}
.search svg{width:16px;height:16px;color:var(--muted);flex:0 0 auto}
.search input{width:100%;border:0;background:none;font-size:14px;outline:none;color:var(--text)}
.search input::placeholder{color:#93A19E}
.search:focus-within{background:#fff;border-color:var(--ink-2);box-shadow:0 0 0 4px rgba(23,184,144,.16)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;background:var(--bg);align-items:center;justify-content:center}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:background .2s var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .24s var(--ease)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1.2;border:1px solid transparent;text-decoration:none;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 26px -14px rgba(14,59,67,.6)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);opacity:.94}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink-2);color:var(--ink-2);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;pointer-events:none}

/* ---------- 页头横幅 ---------- */
.pagehead{position:relative;overflow:hidden;background:
  radial-gradient(900px 420px at 88% -10%,rgba(23,184,144,.16),transparent 60%),
  linear-gradient(135deg,#EAF5F2 0%,#F4FAF8 55%,#FFFFFF 100%);
  border-bottom:1px solid var(--line);padding:36px 0 56px}
.pagehead::after{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(14,59,67,.10) 1px,transparent 1px);background-size:22px 22px;
  opacity:.45;mask-image:linear-gradient(120deg,transparent 30%,#000 100%)}
.pagehead .container{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--ink-2)}
.breadcrumb span.sep{color:#A9B6B3}
.pagehead-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:48px;align-items:center;margin-top:26px}
.pagehead h1{font-size:clamp(30px,3.6vw,44px);line-height:1.2;letter-spacing:-.02em;font-weight:700;color:var(--ink);max-width:20em}
.pagehead .lead{margin-top:16px;font-size:17px;line-height:1.9;color:var(--muted);max-width:34em}
.stat-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.stat-pill{display:inline-flex;align-items:baseline;gap:8px;padding:10px 18px;background:rgba(255,255,255,.85);
  border:1px solid var(--line);border-radius:var(--r-pill);box-shadow:var(--sh-1);backdrop-filter:blur(6px)}
.stat-pill b{font-size:24px;font-weight:700;color:var(--ink);line-height:1;font-variant-numeric:tabular-nums}
.stat-pill small{font-size:12px;color:var(--muted);letter-spacing:.02em}
.pagehead-visual{position:relative}
.pagehead-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);
  box-shadow:var(--sh-3);background:var(--skeleton)}
.pagehead-visual .tag-float{position:absolute;left:-6px;bottom:18px;padding:8px 16px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);font-size:13px;color:var(--ink);box-shadow:var(--sh-2)}
.pagehead-visual .tag-float::before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;
  background:var(--mint);margin-right:8px;vertical-align:1px}

/* ---------- 主体两栏 ---------- */
.section{padding:var(--sec) 0}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;letter-spacing:-.015em;color:var(--ink);font-weight:700}
.section-head p{margin-top:12px;color:var(--muted);font-size:16px;line-height:1.9}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--ink-2);text-transform:none;margin-bottom:12px}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad)}

.layout{display:grid;grid-template-columns:236px minmax(0,1fr);gap:32px;align-items:start}
.side{position:sticky;top:96px;display:grid;gap:20px}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1)}
.side-title{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--muted);margin-bottom:12px}
.side-link{position:relative;display:block;padding:11px 14px;border-radius:var(--r-sm);font-size:15px;
  color:rgba(16,32,31,.78);transition:background .2s var(--ease),color .2s var(--ease),padding-left .2s var(--ease)}
.side-link+.side-link{margin-top:6px}
.side-link:hover{background:var(--bg);color:var(--ink)}
.side-link.is-active{background:var(--mint-soft);color:var(--ink);font-weight:600}
.side-link.is-active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;background:var(--grad)}
.side-text{font-size:14px;line-height:1.8;color:var(--muted);margin-bottom:14px}
.side-card .btn{font-size:14px;padding:11px 18px}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D3DFDB}
.card-media{position:relative;background:var(--skeleton)}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.chip{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);font-size:12px;
  font-weight:600;letter-spacing:.02em;background:var(--mint-soft);color:#0B6B57}
.card-media .chip{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.92);color:var(--ink);
  box-shadow:var(--sh-1);backdrop-filter:blur(4px)}
.chip--sand{background:rgba(242,166,90,.18);color:#9A5A17}
.chip--ink{background:rgba(14,59,67,.08);color:var(--ink)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.card-body h3{font-size:18px;line-height:1.45;font-weight:700;color:var(--ink)}
.card-body p{margin-top:10px;font-size:14px;line-height:1.85;color:var(--muted)}
.card-meta{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:16px;font-size:13px;color:var(--muted);
  font-variant-numeric:tabular-nums}
.card-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink-2)}
.card-link i{font-style:normal;transition:transform .2s var(--ease)}
.card-link:hover i{transform:translateX(4px)}
.card-meta .card-link{margin-left:auto}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:step}
.step{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 22px;
  box-shadow:var(--sh-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease)}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.step .idx{font-size:28px;font-weight:700;line-height:1;letter-spacing:-.02em;color:rgba(23,184,144,.35);
  font-variant-numeric:tabular-nums}
.step h3{margin-top:12px;font-size:18px;font-weight:700;color:var(--ink)}
.step p{margin-top:8px;font-size:14px;line-height:1.85;color:var(--muted)}

/* ---------- 现象对照列表 ---------- */
.band{background:linear-gradient(180deg,#FFFFFF 0%,#F2F8F6 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.compare{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1)}
.compare-row{display:grid;grid-template-columns:minmax(0,240px) minmax(0,1fr);gap:24px;padding:22px 28px;border-top:1px solid var(--line);align-items:start}
.compare-row:first-child{border-top:0}
.compare-row .label{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:600;color:var(--ink)}
.compare-row .label::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--mint);flex:0 0 auto}
.compare-row p{font-size:15px;line-height:1.85;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;display:grid;gap:14px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-1);
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease)}
.faq-item[open]{border-color:#CFDEDA;box-shadow:var(--sh-2)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;
  font-size:17px;font-weight:600;color:var(--ink);list-style:none;cursor:pointer}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item .plus{position:relative;flex:0 0 auto;width:22px;height:22px;border-radius:50%;background:var(--mint-soft);
  transition:transform .24s var(--ease),background .24s var(--ease)}
.faq-item .plus::before,.faq-item .plus::after{content:"";position:absolute;left:50%;top:50%;background:var(--ink-2);
  border-radius:2px;transform:translate(-50%,-50%)}
.faq-item .plus::before{width:10px;height:2px}
.faq-item .plus::after{width:2px;height:10px}
.faq-item[open] .plus{transform:rotate(45deg);background:rgba(23,184,144,.22)}
.faq-item .answer{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--muted)}

/* ---------- 尾部 CTA ---------- */
.cta{padding:0 0 var(--sec)}
.cta-card{position:relative;overflow:hidden;border-radius:var(--r-lg);background:var(--grad);padding:48px;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,420px);gap:40px;align-items:center;
  box-shadow:var(--sh-3)}
.cta-card::after{content:"";position:absolute;width:420px;height:420px;right:-140px;top:-180px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),transparent 65%);pointer-events:none}
.cta-copy h2{font-size:clamp(24px,2.5vw,32px);line-height:1.3;color:#fff;font-weight:700;letter-spacing:-.015em}
.cta-copy p{margin-top:14px;font-size:15px;line-height:1.9;color:rgba(255,255,255,.85);max-width:32em}
.cta-list{margin-top:20px;display:grid;gap:10px}
.cta-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:rgba(255,255,255,.9)}
.cta-list li::before{content:"";flex:0 0 auto;width:16px;height:16px;margin-top:4px;border-radius:50%;
  background:rgba(255,255,255,.2);
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.55)}
.form-card{position:relative;z-index:1;background:#fff;border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-2)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:600;color:var(--ink)}
.field input,.field textarea{width:100%;height:46px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;font-size:14px;color:var(--text);transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.field textarea{height:88px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#9AA8A5}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--ink-2);box-shadow:0 0 0 4px rgba(23,184,144,.16)}
.field.is-error input,.field.is-error textarea{border-color:#C0492F}
.field .err{display:none;font-size:13px;color:#C0492F}
.field.is-error .err{display:block}
.form-note{margin-top:12px;font-size:12px;line-height:1.7;color:var(--muted)}
.form-ok{display:none;margin-top:12px;padding:10px 14px;border-radius:var(--r-sm);background:var(--mint-soft);
  font-size:13px;color:#0B6B57}
.form-ok.is-show{display:block}

/* ---------- 页脚 ---------- */
.site-footer{background:#0B2B31;color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .logo-text{color:#fff;font-size:17px;font-weight:700}
.footer-desc{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);max-width:30em}
.footer-contact{margin-top:20px;font-size:14px;line-height:1.95;color:rgba(255,255,255,.72)}
.footer-contact span{display:block;font-size:12px;letter-spacing:.08em;color:rgba(255,255,255,.45);margin-top:10px}
.footer-contact span:first-child{margin-top:0}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col li+li{margin-top:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#7FE7CE}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;flex-wrap:wrap;gap:14px;
  align-items:center;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55)}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom-links a{font-size:13px;color:rgba(255,255,255,.6)}
.footer-bottom-links a:hover{color:#7FE7CE}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  :root{--sec:64px}
  .nav-toggle{display:inline-flex}
  .nav{position:absolute;top:72px;left:16px;right:16px;display:none;flex-direction:column;align-items:stretch;
    gap:4px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--sh-3);justify-content:flex-start}
  .nav.is-open{display:flex}
  .nav-link{padding:12px 14px;font-size:16px;border-radius:12px}
  .nav-link::after{display:none}
  .nav-link.is-active{background:var(--mint-soft)}
  .pagehead-grid{grid-template-columns:1fr;gap:32px}
  .pagehead h1{max-width:none}
  .layout{grid-template-columns:1fr}
  .side{position:static;grid-template-columns:1fr 1fr;display:grid}
  .cta-card{grid-template-columns:1fr;padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  :root{--sec:48px;--gap:16px}
  .search{display:none}
  .header-inner{height:64px;gap:12px}
  .site-header .nav{top:64px}
  .logo-text{font-size:16px}
  .pagehead{padding:28px 0 40px}
  .pagehead .lead{font-size:16px}
  .stat-pill{padding:8px 14px}
  .stat-pill b{font-size:20px}
  .card-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .compare-row{grid-template-columns:1fr;gap:8px;padding:18px 20px}
  .side{grid-template-columns:1fr}
  .faq-item summary{padding:18px 18px;font-size:16px}
  .faq-item .answer{padding:0 18px 18px}
  .cta-card{padding:26px;gap:26px}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:479px){
  .btn{padding:11px 18px;font-size:14px}
  .stat-row{gap:8px}
  .card-body{padding:18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

/* roulang page: category2 */
:root{
  --brand:#0E3B43;
  --brand-2:#125A63;
  --accent:#17B890;
  --sand:#F2A65A;
  --ink:#10201F;
  --muted:#5B6B69;
  --bg:#F6F8F7;
  --card:#FFFFFF;
  --line:#E3E9E7;
  --footer-bg:#0B2B31;
  --grad:linear-gradient(135deg,#0E3B43 0%,#12707A 55%,#17B890 100%);
  --r-sm:12px;
  --r-md:20px;
  --r-lg:28px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,59,67,.06);
  --sh-2:0 8px 24px -12px rgba(14,59,67,.18);
  --sh-3:0 24px 60px -24px rgba(14,59,67,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --space:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.9;color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:var(--space) 0;}
.section--tight{padding:64px 0;}
.section-head{max-width:720px;margin-bottom:28px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--brand-2);
  background:rgba(23,184,144,.1);border:1px solid rgba(23,184,144,.28);
  padding:5px 14px;border-radius:var(--r-pill);margin-bottom:14px;font-weight:600;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}
h2{font-size:clamp(24px,2.6vw,36px);line-height:1.25;font-weight:700;letter-spacing:-.01em;}
.lead{font-size:16px;color:var(--muted);margin-top:12px;max-width:38em;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--sh-2);background-size:160% 160%;background-position:0% 50%;}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-3);background-position:100% 50%;}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line);box-shadow:var(--sh-1);}
.btn-ghost:hover{border-color:var(--brand-2);color:var(--brand-2);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-light{background:#fff;color:var(--brand);}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 18px 40px -18px rgba(0,0,0,.5);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);transform:translateY(-2px);}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);box-shadow:var(--sh-1);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:32px;height:32px;border-radius:10px;background:var(--grad);
  display:inline-flex;align-items:center;justify-content:center;box-shadow:var(--sh-1);
}
.logo-mark svg{width:20px;height:20px;}
.logo-text{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--brand);white-space:nowrap;}
.nav{display:flex;align-items:center;gap:4px;margin-right:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  font-size:15px;color:rgba(16,32,31,.7);border-radius:var(--r-sm);
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.search{
  display:flex;align-items:center;gap:8px;width:220px;height:40px;padding:0 14px;
  background:var(--bg);border:1px solid transparent;border-radius:var(--r-pill);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.search svg{width:16px;height:16px;color:var(--muted);flex-shrink:0;}
.search input{
  border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--ink);
}
.search input::placeholder{color:#8A9997;}
.search:focus-within{border-color:var(--brand-2);background:#fff;box-shadow:0 0 0 4px rgba(23,184,144,.18);}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;
  background:#fff;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;transition:transform .24s var(--ease);}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand);border-radius:2px;transition:transform .24s var(--ease),top .24s var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(-90deg);}
.nav-toggle[aria-expanded="true"] span::after{top:0;opacity:0;}

/* ---------- 居中页头 ---------- */
.page-head{
  position:relative;overflow:hidden;text-align:center;
  padding:84px 0 72px;
  background:
    radial-gradient(circle at 18% 20%, rgba(23,184,144,.14), transparent 42%),
    radial-gradient(circle at 84% 76%, rgba(14,59,67,.12), transparent 46%),
    linear-gradient(180deg,#F2F7F6 0%, #F6F8F7 100%);
  border-bottom:1px solid var(--line);
}
.page-head::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(14,59,67,.16) 1px, transparent 1px);
  background-size:22px 22px;
  mask-image:radial-gradient(ellipse 70% 80% at 50% 45%, #000 25%, transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 70% 80% at 50% 45%, #000 25%, transparent 78%);
  opacity:.85;
}
.page-head .container{position:relative;z-index:1;}
.crumb{
  display:flex;justify-content:center;align-items:center;gap:8px;
  font-size:14px;color:var(--muted);margin-bottom:22px;
}
.crumb a{transition:color .2s var(--ease);}
.crumb a:hover{color:var(--brand-2);}
.crumb span.sep{color:#A9B7B5;}
.page-head h1{
  font-size:clamp(32px,4.2vw,52px);line-height:1.15;font-weight:700;letter-spacing:-.02em;
  max-width:20em;margin:0 auto;color:var(--brand);
}
.page-head .lead{margin:18px auto 0;max-width:44em;font-size:17px;color:var(--muted);}
.head-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;margin-top:34px;}
.head-stats{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:36px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:var(--r-pill);font-size:14px;color:var(--brand);
  background:rgba(255,255,255,.86);border:1px solid var(--line);box-shadow:var(--sh-1);
}
.chip b{font-size:16px;font-weight:700;}
.chip i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;}

/* ---------- 序号大卡列表 ---------- */
.num-list{display:grid;gap:24px;margin-top:8px;}
.num-card{
  display:grid;grid-template-columns:104px minmax(0,1fr) 300px;gap:28px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.num-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(23,184,144,.45);}
.num-index{
  font-size:48px;line-height:1;font-weight:800;letter-spacing:-.03em;
  color:rgba(23,184,144,.3);align-self:flex-start;padding-top:4px;
}
.num-body h3{font-size:21px;line-height:1.4;font-weight:700;margin-bottom:10px;}
.num-body p{font-size:15px;color:var(--muted);line-height:1.85;}
.num-points{display:grid;gap:8px;margin:16px 0 14px;}
.num-points li{
  position:relative;padding-left:18px;font-size:15px;color:#2C3B3A;line-height:1.8;
}
.num-points li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--accent);
}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-2);
  transition:color .2s var(--ease);
}
.link-more .arrow{transition:transform .24s var(--ease);}
.link-more:hover{color:var(--accent);}
.link-more:hover .arrow{transform:translateX(4px);}
.num-media{
  border-radius:var(--r-md);overflow:hidden;background:#EEF2F1;aspect-ratio:16/9;
  box-shadow:var(--sh-1);
}
.num-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.num-card:hover .num-media img{transform:scale(1.04);}

/* ---------- 数据徽章横带 ---------- */
.stat-band{
  background:var(--grad);border-radius:var(--r-lg);padding:36px 32px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  box-shadow:var(--sh-3);position:relative;overflow:hidden;
}
.stat-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px);
  background-size:48px 48px;opacity:.5;
}
.stat-item{position:relative;z-index:1;color:#fff;text-align:center;padding:0 8px;}
.stat-item .num{font-size:clamp(28px,3.4vw,36px);font-weight:800;line-height:1.1;letter-spacing:-.02em;}
.stat-item .num small{font-size:15px;font-weight:600;margin-left:2px;}
.stat-item .label{font-size:13px;color:rgba(255,255,255,.82);margin-top:8px;line-height:1.6;}
.stat-item + .stat-item{border-left:1px solid rgba(255,255,255,.16);}

/* ---------- 场景对照列表 ---------- */
.compare{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
}
.compare-row{
  display:grid;grid-template-columns:260px minmax(0,1fr);gap:28px;
  padding:24px 32px;align-items:start;
  transition:background .2s var(--ease);
}
.compare-row + .compare-row{border-top:1px solid var(--line);}
.compare-row:hover{background:#FBFDFC;}
.compare-label{display:flex;align-items:flex-start;gap:12px;}
.compare-label .tag{
  flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;
  min-width:64px;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(23,184,144,.12);color:var(--brand-2);border:1px solid rgba(23,184,144,.3);
  margin-top:2px;
}
.compare-label strong{font-size:16px;font-weight:600;line-height:1.6;color:var(--ink);}
.compare-desc{font-size:15px;color:var(--muted);line-height:1.85;}
.compare-desc b{color:var(--brand);font-weight:600;}

/* ---------- 问答双列 ---------- */
.qa-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.qa-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px 26px;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.qa-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(23,184,144,.4);}
.qa-card h3{font-size:17px;font-weight:600;line-height:1.6;display:flex;gap:10px;align-items:flex-start;}
.qa-card h3 .q{
  flex-shrink:0;width:24px;height:24px;border-radius:8px;background:rgba(14,59,67,.08);
  color:var(--brand);font-size:13px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;margin-top:3px;
}
.qa-card p{font-size:15px;color:var(--muted);line-height:1.85;margin-top:10px;padding-left:34px;}

/* ---------- 尾部 CTA ---------- */
.cta-band{
  background:var(--grad);border-radius:var(--r-lg);padding:56px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--sh-3);position:relative;overflow:hidden;margin-bottom:64px;
}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),transparent 68%);
}
.cta-band h2{color:#fff;font-size:clamp(24px,2.6vw,32px);position:relative;}
.cta-band p{color:rgba(255,255,255,.86);font-size:15px;margin-top:10px;position:relative;max-width:34em;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;flex-shrink:0;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .logo-text{color:#fff;font-size:17px;}
.footer-desc{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);max-width:32em;}
.footer-contact{margin-top:18px;font-size:14px;line-height:2;color:rgba(255,255,255,.72);}
.footer-contact span{
  display:inline-block;min-width:64px;color:rgba(255,255,255,.5);font-size:13px;margin-right:8px;
}
.footer-col h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s var(--ease),padding-left .2s var(--ease);}
.footer-col a:hover{color:#fff;padding-left:4px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom-links{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom-links a{color:rgba(255,255,255,.55);transition:color .2s var(--ease);}
.footer-bottom-links a:hover{color:#fff;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .num-card{grid-template-columns:88px minmax(0,1fr) 260px;gap:22px;padding:26px;}
}
@media (max-width:1023px){
  :root{--space:64px;}
  .container{padding:0 24px;}
  .header-inner{height:64px;gap:16px;}
  .search{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav{
    position:fixed;left:16px;right:16px;top:72px;z-index:70;
    flex-direction:column;align-items:stretch;gap:6px;margin:0;padding:16px;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
    box-shadow:var(--sh-3);display:none;
  }
  .nav.is-open{display:flex;}
  .nav-link{height:44px;padding:0 14px;border-radius:var(--r-sm);justify-content:flex-start;}
  .nav-link::after{display:none;}
  .nav-link.is-active{background:rgba(23,184,144,.1);}
  .num-card{grid-template-columns:72px minmax(0,1fr);gap:20px;}
  .num-media{grid-column:1 / -1;order:3;}
  .stat-band{grid-template-columns:repeat(2,1fr);gap:24px 12px;}
  .stat-item:nth-child(3){border-left:0;}
  .stat-item:nth-child(odd){border-left:0;}
  .compare-row{grid-template-columns:1fr;gap:8px;padding:22px 24px;}
  .qa-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--space:48px;}
  .container{padding:0 20px;}
  .page-head{padding:56px 0 48px;}
  .head-stats{gap:8px;}
  .chip{font-size:13px;padding:8px 14px;}
  .num-card{padding:22px;border-radius:var(--r-md);}
  .num-index{font-size:38px;}
  .stat-band{padding:28px 20px;border-radius:var(--r-md);}
  .stat-item + .stat-item{border-left:0;}
  .stat-band{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:32px 24px;border-radius:var(--r-md);margin-bottom:48px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:479px){
  .page-head h1{font-size:30px;}
  .head-actions{flex-direction:column;}
  .head-actions .btn{width:100%;}
  .stat-band{grid-template-columns:1fr;}
  .num-card{grid-template-columns:1fr;}
  .num-index{font-size:32px;padding-top:0;}
  .qa-card h3{font-size:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}