/* roulang page: index */
:root{
  --primary:#1F4E79;
  --primary-dark:#16395A;
  --primary-light:#E8F0F8;
  --accent:#B4445F;
  --accent-hover:#C55470;
  --accent-light:#FBEEF1;
  --sand:#F6F2EC;
  --success:#2E7D5B;
  --danger:#C0392B;
  --notice:#B7791F;
  --text:#1B2333;
  --text-2:#4A5568;
  --text-3:#7A8699;
  --line:#E3E8EF;
  --divider:#EDF1F6;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --bg-alt:#F1F5FA;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:6px;
  --sh1:0 1px 2px rgba(16,32,58,.04);
  --sh2:0 8px 24px -12px rgba(16,32,58,.14);
  --sh3:0 14px 32px -14px rgba(16,32,58,.22);
  --container:1200px;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC","SimSun",serif;
  --ease:cubic-bezier(.2,.7,.35,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
time{font-variant-numeric:tabular-nums}
::selection{background:var(--primary-light);color:var(--primary-dark)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.serif{font-family:var(--font-serif)}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--primary-dark);color:#EAF1F8;font-size:12.5px;line-height:36px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0}
.topbar-domain{letter-spacing:.02em;opacity:.82;font-variant-numeric:tabular-nums}
.topbar-note{color:#C9D9E8;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:16px;white-space:nowrap}
.topbar-link{color:#D6E3EF;transition:color .18s var(--ease)}
.topbar-link:hover{color:#fff}
.topbar-btn{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border:1px solid rgba(255,255,255,.42);border-radius:6px;color:#fff;
  font-size:12.5px;transition:background .18s var(--ease),border-color .18s var(--ease);
}
.topbar-btn:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.7)}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh2)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(160deg,var(--primary) 0%,var(--primary-dark) 100%);
  display:flex;align-items:center;justify-content:center;box-shadow:var(--sh1);
}
.brand-mark svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-family:var(--font-serif);font-weight:600;font-size:19px;color:var(--primary-dark);letter-spacing:.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  padding:24px 0;transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:18px;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:center;
  transition:transform .2s var(--ease);border-radius:2px;
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{transform:scaleX(1);opacity:.5}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:10px;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--primary-dark);position:relative;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--primary-dark);border-radius:2px;
  transition:transform .2s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-drawer{
  display:none;position:fixed;inset:0 0 0 auto;width:min(320px,88vw);background:#fff;z-index:90;
  box-shadow:-10px 0 40px -20px rgba(16,32,58,.35);padding:24px;overflow-y:auto;
  transform:translateX(100%);transition:transform .24s var(--ease);
}
.nav-drawer.is-open{transform:translateX(0)}
.nav-drawer .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.nav-drawer .drawer-close{
  width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:10px;cursor:pointer;font-size:18px;color:var(--text-2);
}
.drawer-links{display:flex;flex-direction:column;border-top:1px solid var(--divider)}
.drawer-link{padding:16px 4px;border-bottom:1px solid var(--divider);font-size:15.5px;color:var(--text-2);display:flex;align-items:center;justify-content:space-between}
.drawer-link.active{color:var(--primary);font-weight:600}
.drawer-contact{margin-top:24px;font-size:13.5px;color:var(--text-3);line-height:2}
.drawer-cta{margin-top:20px;width:100%;justify-content:center}
.nav-overlay{
  position:fixed;inset:0;background:rgba(27,35,51,.6);z-index:80;opacity:0;pointer-events:none;
  transition:opacity .24s var(--ease);
}
.nav-overlay.is-open{opacity:1;pointer-events:auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease);
}
.btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--sh1)}
.btn-accent:hover{background:var(--accent-hover);box-shadow:var(--sh3);transform:translateY(-1px)}
.btn-accent:active{filter:brightness(.96);transform:translateY(0)}
.btn-outline{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary-light);box-shadow:var(--sh2)}
.btn-outline:active{filter:brightness(.97)}
.btn-ghost{height:auto;padding:0;background:none;color:var(--primary);font-weight:600;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.btn-ghost:hover{color:var(--primary-dark)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-lg{height:48px;padding:0 28px}
.btn-block{width:100%}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-sand{background:var(--sand)}
.section-head{max-width:720px;margin-bottom:32px}
.section-head.between{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.section-head h2{
  font-family:var(--font-serif);font-weight:600;font-size:30px;line-height:1.25;
  color:var(--primary-dark);letter-spacing:.01em;
}
.section-desc{margin-top:12px;font-size:15.5px;color:var(--text-2);line-height:1.8}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  letter-spacing:.06em;color:var(--primary);margin-bottom:12px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--primary);opacity:.5}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--r-badge);
  font-size:12.5px;font-weight:500;background:var(--primary-light);color:var(--primary);
}
.badge-accent{background:var(--accent-light);color:var(--accent)}
.badge-sand{background:#EFE8DD;color:#8A6A45}

/* ---------- Hero ---------- */
.hero{position:relative;background:#fff;overflow:hidden;padding:64px 0 80px}
.hero::before{
  content:"";position:absolute;right:-160px;top:-120px;width:640px;height:640px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,78,121,.07) 0%,rgba(31,78,121,0) 68%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;position:relative}
.hero-copy{min-width:0}
.hero-title{
  font-family:var(--font-serif);font-weight:600;font-size:44px;line-height:1.25;
  color:var(--primary-dark);margin-top:16px;letter-spacing:.005em;
}
.hero-sub{margin-top:18px;font-size:18px;line-height:1.75;color:var(--text-2);max-width:560px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:26px}
.hero-point{display:flex;align-items:center;gap:8px;font-size:15px;color:var(--text-2)}
.hero-point svg{width:18px;height:18px;stroke:var(--primary);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-visual{position:relative}
.hero-img{
  position:relative;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh2);
  aspect-ratio:4/3;background:var(--bg-alt);
}
.hero-img img{width:100%;height:100%;object-fit:cover}
.hero-img::after{
  content:"";position:absolute;inset:0;background:linear-gradient(200deg,rgba(22,57,90,.10) 0%,rgba(22,57,90,.02) 60%);pointer-events:none;
}
.glance-card{
  position:absolute;left:-28px;bottom:-28px;width:260px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh2);padding:18px 20px;
}
.glance-title{font-size:13px;font-weight:600;color:var(--primary);letter-spacing:.05em;margin-bottom:12px}
.glance-row{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:9px 0;border-top:1px solid var(--divider)}
.glance-row:first-of-type{border-top:0}
.glance-key{font-size:13.5px;color:var(--text-3)}
.glance-val{font-size:15px;font-weight:600;color:var(--primary-dark);font-variant-numeric:tabular-nums}

/* ---------- 权益阶梯 ---------- */
.tier-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:40px;align-items:start}
.tier-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh1);padding:24px 22px 26px;transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.tier-card:hover{transform:translateY(-2px);box-shadow:var(--sh3)}
.tier-card:nth-child(1){margin-top:0}
.tier-card:nth-child(2){margin-top:8px}
.tier-card:nth-child(3){margin-top:16px}
.tier-card:nth-child(4){margin-top:24px}
.tier-card.recommend{border-top:2px solid var(--accent)}
.tier-flag{
  position:absolute;top:-11px;right:18px;height:22px;padding:0 10px;border-radius:var(--r-badge);
  background:var(--accent);color:#fff;font-size:12px;line-height:22px;font-weight:500;
}
.tier-num{
  font-family:var(--font-sans);font-size:13px;font-weight:700;color:var(--primary);
  letter-spacing:.14em;font-variant-numeric:tabular-nums;
}
.tier-name{margin-top:10px;font-size:18px;font-weight:600;color:var(--primary-dark)}
.tier-cond{margin-top:6px;font-size:13px;color:var(--text-3)}
.tier-desc{margin-top:14px;font-size:14.5px;line-height:1.8;color:var(--text-2);min-height:78px}
.tier-badge{margin-top:16px;display:inline-flex}

/* ---------- 套餐对比 ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px;align-items:start}
.plan-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh1);padding:30px 26px;transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.plan-card:hover{transform:translateY(-2px);box-shadow:var(--sh3)}
.plan-card.featured{border:1px solid var(--primary);transform:translateY(-8px);box-shadow:var(--sh2)}
.plan-card.featured:hover{transform:translateY(-10px)}
.plan-flag{
  position:absolute;top:-12px;left:26px;height:24px;padding:0 12px;border-radius:var(--r-badge);
  background:var(--primary);color:#fff;font-size:12px;line-height:24px;letter-spacing:.04em;
}
.plan-name{font-size:17px;font-weight:600;color:var(--primary-dark)}
.plan-price{display:flex;align-items:baseline;gap:6px;margin-top:14px}
.plan-price strong{
  font-size:34px;font-weight:700;color:var(--primary);line-height:1;
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.plan-price span{font-size:13px;color:var(--text-3)}
.plan-note{margin-top:8px;font-size:13px;color:var(--text-3)}
.plan-list{margin-top:22px;border-top:1px solid var(--divider);padding-top:6px}
.plan-list li{display:flex;align-items:flex-start;gap:10px;padding:9px 0;font-size:14.5px;color:var(--text-2);border-bottom:1px solid var(--divider)}
.plan-list li:last-child{border-bottom:0}
.plan-list svg{width:18px;height:18px;flex-shrink:0;margin-top:3px;stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round}
.plan-list .yes svg{stroke:var(--primary)}
.plan-list .no{color:var(--text-3)}
.plan-list .no svg{stroke:#B7C0CD}
.plan-card .btn{margin-top:24px}

/* ---------- 限时带 ---------- */
.limited{background:var(--primary-dark);color:#fff;padding:32px 0}
.limited-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.countdown{display:flex;align-items:center;gap:10px}
.cd-unit{text-align:center;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.16);border-radius:8px;padding:8px 12px;min-width:64px}
.cd-num{display:block;font-size:24px;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums}
.cd-label{display:block;font-size:12px;color:#B9CBDD;margin-top:4px}
.cd-sep{font-size:20px;color:#8FA9C2;font-weight:700}
.limited-text{flex:1;min-width:220px}
.limited-text strong{display:block;font-size:18px;font-weight:600;font-family:var(--font-serif)}
.limited-text span{display:block;margin-top:6px;font-size:13.5px;color:#B9CBDD}
.limited-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.limited-actions .btn-ghost{color:#D6E3EF}
.limited-actions .btn-ghost:hover{color:#fff}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:8px}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh1);transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh3)}
.news-card:hover .news-title{color:var(--primary)}
.news-cover{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.02)}
.news-body{padding:20px 22px 22px}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.news-title{font-size:17px;font-weight:600;line-height:1.55;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .18s var(--ease)}
.news-excerpt{margin-top:10px;font-size:14px;line-height:1.8;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px;padding-top:14px;border-top:1px solid var(--divider)}
.news-date{font-size:12.5px;color:var(--text-3)}
.news-more{font-size:13.5px;font-weight:600;color:var(--primary)}
.news-empty{
  grid-column:1/-1;text-align:center;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);
  padding:56px 24px;
}
.news-empty svg{width:48px;height:48px;stroke:var(--text-3);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;margin:0 auto 16px}
.news-empty p{font-size:15px;color:var(--text-3);margin-bottom:18px}

/* ---------- 服务流程 ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:40px;position:relative}
.flow-item{position:relative;padding-top:28px}
.flow-item::before{
  content:"";position:absolute;top:15px;left:0;right:0;height:1px;background:var(--line);
}
.flow-item:first-child::before{left:15px}
.flow-item:last-child::before{right:calc(100% - 16px)}
.flow-dot{
  position:absolute;top:8px;left:0;width:16px;height:16px;border-radius:50%;background:var(--primary);
  border:3px solid #fff;box-shadow:0 0 0 1px var(--primary);z-index:1;
}
.flow-step{font-size:12.5px;font-weight:700;letter-spacing:.12em;color:var(--primary);font-variant-numeric:tabular-nums}
.flow-name{margin-top:8px;font-size:17px;font-weight:600;color:var(--primary-dark)}
.flow-desc{margin-top:8px;font-size:14px;line-height:1.75;color:var(--text-2)}

/* ---------- 咨询表单 ---------- */
.consult-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.consult-list{margin-top:24px;border-top:1px solid var(--divider)}
.consult-list li{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--divider);font-size:15px;color:var(--text-2)}
.consult-list svg{width:20px;height:20px;flex-shrink:0;margin-top:4px;stroke:var(--primary);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.consult-contact{margin-top:26px;font-size:14px;color:var(--text-3);line-height:2}
.consult-contact b{color:var(--primary-dark);font-weight:600;font-variant-numeric:tabular-nums}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh2);padding:30px 28px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px}
.field .req{color:var(--accent)}
.field input[type="text"],
.field input[type="tel"],
.field select,
.field textarea{
  width:100%;height:46px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-input);
  background:#fff;font-size:15px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{height:auto;min-height:110px;padding:12px 14px;line-height:1.7;resize:vertical}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,78,121,.10);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--danger);box-shadow:0 0 0 3px rgba(192,57,43,.08)}
.field-error{display:none;margin-top:6px;font-size:12.5px;color:var(--danger)}
.field.has-error .field-error{display:block}
.checkbox-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--text-2);line-height:1.7}
.checkbox-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--primary);flex-shrink:0}
.form-note{margin-top:14px;font-size:12.5px;color:var(--text-3);line-height:1.7}
.form-msg{display:none;margin-top:16px;padding:12px 14px;border-radius:var(--r-input);font-size:14px}
.form-msg.ok{display:block;background:#EAF5F0;color:var(--success);border:1px solid #CBE6DA}
.form-msg.err{display:block;background:#FBEDEC;color:var(--danger);border:1px solid #F2D3CF}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);margin-top:8px}
.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:20px;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--text);transition:color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary)}
.faq-icon{position:relative;width:16px;height:16px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .18s var(--ease),opacity .18s var(--ease);
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-body{padding:0 0 24px;max-width:860px}
.faq-body p{font-size:14.5px;line-height:1.85;color:var(--text-2)}

/* ---------- 收尾 CTA ---------- */
.cta-band{background:var(--primary);color:#fff;padding:40px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-inner strong{font-family:var(--font-serif);font-size:22px;font-weight:600;line-height:1.4}
.cta-inner span{display:block;margin-top:8px;font-size:14px;color:#C6D8E8}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--primary-dark);color:#C9D9E8;padding:64px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{gap:10px}
.footer-brand .brand-text{color:#fff;font-size:20px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);box-shadow:none}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:#A9BED1;max-width:340px}
.footer-contact{margin-top:20px;font-size:13.5px;line-height:2.1;color:#A9BED1}
.footer-contact b{color:#fff;font-weight:600;font-variant-numeric:tabular-nums}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:13.5px;color:#A9BED1;transition:color .18s var(--ease)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;align-items:center;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:#8FA9C2;
}
.footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom-links a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .section{padding:72px 0}
  .hero{padding:48px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-title{font-size:36px}
  .glance-card{position:static;width:100%;margin-top:20px}
  .tier-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .tier-card:nth-child(n){margin-top:0}
  .plan-grid{grid-template-columns:1fr;gap:20px}
  .plan-card.featured{transform:none}
  .plan-card.featured:hover{transform:translateY(-2px)}
  .news-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .flow-grid{grid-template-columns:repeat(2,1fr);gap:28px 20px}
  .flow-item:nth-child(3)::before{left:15px}
  .consult-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .nav-drawer{display:block}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .hero-title{font-size:30px}
  .hero-sub{font-size:16px}
  .section-head h2{font-size:23px}
  .section-head.between{flex-direction:column;align-items:flex-start;gap:12px}
  .news-grid{grid-template-columns:1fr}
  .flow-grid{grid-template-columns:1fr;gap:24px}
  .flow-item::before{display:none}
  .flow-dot{position:static;display:inline-block;margin-bottom:8px}
  .flow-item{padding-top:0;padding-left:0}
  .faq-item summary{font-size:16px;padding:18px 0}
  .limited-inner{flex-direction:column;align-items:flex-start;gap:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .hero-actions .btn{flex:1 1 auto}
}
@media (max-width:479px){
  .topbar-note{display:none}
  .topbar-right .topbar-link{display:none}
  .brand-text{font-size:16px}
  .hero-title{font-size:26px}
  .tier-grid{grid-template-columns:1fr}
  .plan-price strong{font-size:30px}
  .cta-inner strong{font-size:19px}
  .cd-unit{min-width:56px;padding:6px 8px}
  .cd-num{font-size:20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .news-card:hover,.plan-card:hover,.tier-card:hover,.btn:hover{transform:none}
  .news-card:hover .news-cover img{transform:none}
}

/* roulang page: article */
:root{
  --primary:#1F4E79;
  --primary-dark:#16395A;
  --primary-light:#E8F0F8;
  --accent:#B4445F;
  --accent-light:#FBEEF1;
  --sand:#F6F2EC;
  --success:#2E7D5B;
  --warn:#C0392B;
  --text:#1B2333;
  --text-2:#4A5568;
  --text-3:#7A8699;
  --border:#E3E8EF;
  --divider:#EDF1F6;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --surface:#F1F5FA;
  --radius-xl:16px;
  --radius-lg:14px;
  --radius-md:12px;
  --radius-sm:10px;
  --radius-xs:6px;
  --sh-1:0 1px 2px rgba(16,32,58,.04);
  --sh-2:0 8px 24px -12px rgba(16,32,58,.14);
  --sh-3:0 14px 32px -14px rgba(16,32,58,.22);
  --serif:"Noto Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","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(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--accent)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.25;margin:0;color:var(--text)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
svg{display:block}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* 顶部信息条 */
.topbar{background:var(--primary-dark);color:#fff;font-size:12.5px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px}
.topbar-left{display:flex;align-items:center;gap:14px;margin:0;color:rgba(255,255,255,.82)}
.topbar-left b{font-weight:600;color:#fff;letter-spacing:.3px;font-family:var(--sans)}
.topbar-left span{position:relative;padding-left:15px}
.topbar-left span::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:1px;height:12px;background:rgba(255,255,255,.32)}
.topbar-right{display:flex;align-items:center;gap:16px}
.topbar-right a{color:rgba(255,255,255,.82)}
.topbar-right a:hover{color:#fff}

/* 主导航 */
.site-header{
  position:sticky;top:0;z-index:50;
  background:#fff;border-bottom:1px solid var(--border);
  transition:box-shadow .2s ease-out;
}
.site-header.scrolled{box-shadow:var(--sh-2)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:34px;height:34px;border-radius:var(--radius-sm);background:var(--primary);display:grid;place-items:center;flex:none}
.brand-mark svg{width:20px;height:20px;fill:none;stroke:#fff;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-family:var(--serif);font-size:19px;font-weight:600;color:var(--primary);letter-spacing:.4px;white-space:nowrap}
.brand:hover .brand-text{color:var(--primary-dark)}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-link{position:relative;font-size:15px;color:var(--text-2);padding:6px 0;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--primary);opacity:0;transition:opacity .18s ease-out}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{opacity:.45}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-link.active::after{opacity:1}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--border);border-radius:var(--radius-sm);
  background:#fff;cursor:pointer;align-items:center;justify-content:center;flex:none;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";display:block;width:20px;height:2px;border-radius:2px;background:var(--primary);position:relative;
}
.nav-toggle span::before{position:absolute;top:-6px;left:0}
.nav-toggle span::after{position:absolute;top:6px;left:0}
.nav-mask{position:fixed;inset:0;background:rgba(27,35,51,.6);opacity:0;pointer-events:none;transition:opacity .22s ease-out;z-index:60}
.nav-mask.open{opacity:1;pointer-events:auto}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-sm);
  border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;
  transition:background-color .18s ease-out,color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
  white-space:nowrap;
}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#C2506A;color:#fff;box-shadow:var(--sh-3);transform:translateY(-1px)}
.btn-accent:active{background:#A03B54;transform:translateY(0)}
.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-dark)}
.btn-sm{height:36px;padding:0 16px;font-size:14px;border-radius:var(--radius-xs)}
.btn-xs{height:28px;padding:0 12px;font-size:12.5px;border-radius:var(--radius-xs);border-color:rgba(255,255,255,.5);color:#fff;background:transparent}
.btn-xs:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-lg{height:48px;padding:0 28px;font-size:16px}
.btn-block{width:100%}

/* 页头与面包屑 */
.page-hero{
  padding:28px 0 44px;
  background:
    linear-gradient(rgba(246,248,251,.94),rgba(232,240,248,.96)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-bottom:1px solid var(--border);
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);flex-wrap:wrap}
.breadcrumb a{color:var(--primary)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:var(--text-3);opacity:.7}
.crumb-mid{color:var(--text-2)}
.crumb-current{color:var(--text-3);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{margin-top:22px;max-width:860px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--radius-xs);
  font-size:12.5px;font-weight:500;line-height:1.6;
  background:var(--primary-light);color:var(--primary);
}
.badge-primary{background:var(--primary-light);color:var(--primary)}
.article-head h1{font-size:40px;line-height:1.3;margin:16px 0 0;letter-spacing:.3px}
.lede{
  margin-top:18px;padding-left:16px;border-left:3px solid var(--primary);
  font-size:16px;line-height:1.85;color:var(--text-2);
}
.meta{display:flex;align-items:center;flex-wrap:wrap;gap:20px;margin-top:22px;font-size:12.5px;color:var(--text-3)}
.meta-item{display:inline-flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums}
.meta-item svg{width:15px;height:15px;fill:none;stroke:var(--text-3);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}

/* 文章主体 */
.article-section{padding:48px 0 0}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:40px;align-items:start}
.article-body{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:44px 44px 40px;box-shadow:var(--sh-1);min-width:0;
}
.article-body p{font-size:16px;line-height:1.9;color:var(--text-2);margin:0 0 1.2em}
.article-body h2{
  font-size:30px;line-height:1.35;margin:48px 0 18px;padding-left:15px;position:relative;scroll-margin-top:96px;
}
.article-body h2:first-child{margin-top:0}
.article-body h2::before{content:"";position:absolute;left:0;top:.26em;bottom:.26em;width:4px;border-radius:2px;background:var(--primary)}
.article-body h3{font-size:21px;margin:34px 0 12px;color:var(--text)}
.article-body h4{font-size:17px;margin:26px 0 10px;color:var(--text)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em;color:var(--text-2)}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:6px 0;line-height:1.85;font-size:16px}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--sand);
  border-left:3px solid var(--accent);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text-2);font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-md);margin:26px 0;width:100%;object-fit:cover}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:12.5px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;font-variant-numeric:tabular-nums}
.article-body th{background:var(--surface);text-align:left;padding:12px 14px;border:1px solid var(--border);font-weight:600;color:var(--text)}
.article-body td{padding:12px 14px;border:1px solid var(--border);color:var(--text-2)}
.article-body tr:nth-child(even) td{background:#F9FBFD}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(31,78,121,.3);padding-bottom:1px}
.article-body a:hover{color:var(--accent);border-bottom-color:rgba(180,68,95,.35)}
.article-body code{background:var(--surface);border-radius:var(--radius-xs);padding:2px 6px;font-size:14px;color:var(--primary-dark)}
.article-body strong{color:var(--text);font-weight:600}
.article-body hr{border:none;border-top:1px solid var(--divider);margin:34px 0}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:64px 20px;text-align:center;
}
.empty-state svg{width:48px;height:48px;fill:none;stroke:var(--text-3);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.empty-state p{font-size:16px;color:var(--text-2);margin:0}
.empty-state .btn{margin-top:6px}

/* 侧栏 */
.sidebar{position:sticky;top:96px}
.side-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:22px;box-shadow:var(--sh-1);margin-bottom:20px;
}
.side-card h2{
  font-family:var(--sans);font-size:15px;font-weight:600;color:var(--text);
  margin:0 0 14px;padding-bottom:12px;border-bottom:1px solid var(--divider);
}
.toc a{
  display:block;padding:8px 12px;border-left:2px solid transparent;border-radius:0 var(--radius-xs) var(--radius-xs) 0;
  font-size:14.5px;color:var(--text-2);line-height:1.6;transition:background-color .16s ease-out,color .16s ease-out,border-color .16s ease-out;
}
.toc a:hover{background:var(--surface);color:var(--primary)}
.toc a.is-active{border-left-color:var(--primary);color:var(--primary);font-weight:600;background:var(--primary-light)}
.rec-list li + li{margin-top:14px;padding-top:14px;border-top:1px solid var(--divider)}
.rec-list a{display:flex;gap:12px;align-items:flex-start}
.rec-list img{width:72px;height:50px;object-fit:cover;border-radius:8px;flex:none}
.rec-list b{display:block;font-size:14.5px;font-weight:600;color:var(--text);line-height:1.55}
.rec-list a:hover b{color:var(--primary)}
.rec-list span{font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums}
.side-card-consult p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0 0 14px}
.side-note{margin:12px 0 0;font-size:12.5px;color:var(--text-3);text-align:center}

/* 文末区 */
.article-foot{padding:56px 0 0}
.tags{display:flex;flex-wrap:wrap;gap:10px}
.tags .badge{background:var(--surface);color:var(--text-2);transition:background-color .16s ease-out,color .16s ease-out}
.tags .badge:hover{background:var(--primary-light);color:var(--primary)}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px}
.post-nav-card{
  display:block;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:20px 22px;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.post-nav-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:#D6DEE9}
.post-nav-dir{display:block;font-size:12.5px;color:var(--text-3);margin-bottom:8px}
.post-nav-title{display:block;font-size:16px;font-weight:600;color:var(--text);font-family:var(--serif);line-height:1.5}
.post-nav-card:hover .post-nav-title{color:var(--primary)}
.post-nav-card.next{text-align:right}
.related-block{margin-top:56px}
.block-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:22px}
.block-head h2{font-size:24px}
.text-link{font-size:14px;color:var(--primary);border-bottom:1px solid rgba(31,78,121,.4);padding-bottom:2px}
.text-link:hover{color:var(--accent);border-bottom-color:rgba(180,68,95,.4)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--sh-1);display:block;
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3)}
.related-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.related-card-body{padding:18px 20px 22px}
.related-card-body h3{font-size:17px;line-height:1.5;margin-bottom:8px;transition:color .18s ease-out}
.related-card:hover h3{color:var(--primary)}
.related-card-body p{font-size:14px;color:var(--text-3);line-height:1.7}
.related-meta{display:block;margin-top:12px;font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums}
.back-links{display:flex;justify-content:center;gap:28px;margin-top:40px}
.back-links a{font-size:14.5px;color:var(--primary);border-bottom:1px solid rgba(31,78,121,.35);padding-bottom:2px}
.back-links a:hover{color:var(--accent)}

/* 底部 CTA */
.cta-section{padding:72px 0 0}
.cta-band{
  background:var(--primary);color:#fff;border-radius:var(--radius-lg);
  padding:38px 42px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:var(--sh-2);
}
.cta-band h2{color:#fff;font-size:26px}
.cta-band p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.78)}

/* 页脚 */
.site-footer{background:var(--primary-dark);color:#fff;margin-top:84px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding:64px 0 40px}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.12)}
.footer-desc{color:rgba(255,255,255,.7);font-size:14px;margin:16px 0 0;line-height:1.8;max-width:280px}
.footer-contact{color:rgba(255,255,255,.78);font-size:13.5px;line-height:2;margin-top:18px}
.footer-contact b{color:#fff;font-weight:600}
.footer-col h3{font-family:var(--sans);font-size:15px;color:#fff;margin:0 0 16px}
.footer-col li{margin:0}
.footer-col a{display:block;padding:6px 0;font-size:14.5px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0 32px;display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom-links a{color:rgba(255,255,255,.6)}
.footer-bottom-links a:hover{color:#fff}

/* 响应式 */
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:min(320px,84vw);
    background:#fff;flex-direction:column;align-items:flex-start;gap:0;
    padding:96px 24px 32px;transform:translateX(101%);
    transition:transform .22s ease-out;z-index:70;box-shadow:var(--sh-3);overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0)}
  .nav-link{width:100%;padding:14px 0;font-size:16px;border-bottom:1px solid var(--divider)}
  .nav-link::after{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .sidebar{position:static;margin-top:8px}
  .article-head h1{font-size:32px}
  .article-body{padding:34px 30px 30px}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-desc{max-width:none}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .page-hero{padding:20px 0 34px}
  .article-head h1{font-size:26px}
  .lede{font-size:15.5px;padding-left:14px}
  .meta{gap:14px}
  .article-section{padding:34px 0 0}
  .article-body{padding:26px 20px 24px}
  .article-body h2{font-size:23px;margin:36px 0 14px}
  .article-body h3{font-size:18px}
  .article-body p,.article-body li{font-size:15.5px}
  .related-grid{grid-template-columns:1fr}
  .side-card{padding:18px}
  .cta-section{padding:52px 0 0}
  .cta-band{padding:28px 24px}
  .cta-band h2{font-size:22px}
  .site-footer{margin-top:60px}
  .footer-grid{padding:44px 0 28px}
}
@media (max-width:640px){
  .post-nav{grid-template-columns:1fr}
  .post-nav-card.next{text-align:left}
  .back-links{gap:20px}
}
@media (max-width:479px){
  .topbar-left span{display:none}
  .topbar-right a:not(.btn){display:none}
  .brand-text{font-size:17px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .related-card:hover,.post-nav-card:hover,.btn-accent:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --brand:#1F4E79;
  --brand-dark:#16395A;
  --brand-light:#E8F0F8;
  --accent:#B4445F;
  --accent-hover:#C05370;
  --accent-light:#FBEEF1;
  --sand:#F6F2EC;
  --ink:#1B2333;
  --ink-2:#4A5568;
  --ink-3:#7A8699;
  --line:#E3E8EF;
  --divider:#EDF1F6;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --alt:#F1F5FA;
  --ok:#2E7D5B;
  --warn:#C0392B;
  --r-card:14px;
  --r-lg:12px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:6px;
  --sh1:0 1px 2px rgba(16,32,58,.04);
  --sh2:0 8px 24px -12px rgba(16,32,58,.14);
  --sh3:0 14px 32px -14px rgba(16,32,58,.22);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC","SimSun",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--brand-dark)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:600;line-height:1.25;margin:0;color:var(--ink)}
h1{font-size:clamp(32px,4.4vw,44px)}
h2{font-size:clamp(23px,3vw,30px)}
h3{font-size:clamp(18px,2.2vw,21px)}
h4{font-size:17px;font-family:var(--font-sans);font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-white{background:#fff}
.section-light{background:var(--bg)}
.section-alt{background:var(--alt)}
.section-sand{background:var(--sand)}
.section-dark{background:var(--brand-dark);color:#fff}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;letter-spacing:1px;color:var(--ink-3);text-transform:uppercase}
.section-head{max-width:720px;margin-bottom:32px}
.section-head h2{margin-bottom:12px}
.section-desc{font-size:15.5px;color:var(--ink-2);line-height:1.8}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:32px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);border-bottom:1px solid rgba(31,78,121,.3);padding-bottom:2px}
.link-arrow:hover{border-bottom-color:var(--brand)}
.link-arrow svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.5}

/* 顶部信息条 */
.topbar{background:var(--brand-dark);color:#fff;font-size:12.5px;line-height:36px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px}
.topbar-left{display:flex;align-items:center;gap:16px;color:#c9d6e4}
.topbar-domain{font-variant-numeric:tabular-nums;letter-spacing:.4px;color:#fff;font-weight:600}
.topbar-tip{color:#9fb2c8}
.topbar-right{display:flex;align-items:center;gap:18px}
.topbar-right a{color:#c9d6e4;font-size:12.5px}
.topbar-right a:hover{color:#fff}
.btn-xs{height:24px;padding:0 12px;font-size:12.5px;border-radius:6px}
.btn-outline-light{border:1px solid rgba(255,255,255,.5);background:transparent;color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:600;transition:all .18s ease-out}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out}
.site-header.scrolled{box-shadow:var(--sh2)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:inherit}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--brand-light);display:inline-flex;align-items:center;justify-content:center;flex:none}
.brand-mark svg{width:20px;height:20px;stroke:var(--brand);fill:none;stroke-width:1.5}
.brand-text{font-family:var(--font-serif);font-size:19px;font-weight:600;color:var(--brand-dark);letter-spacing:.6px;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{position:relative;padding:25px 0;font-size:15.5px;font-weight:500;color:var(--ink-2)}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:18px;height:2px;border-radius:2px;background:transparent;transition:background .18s ease-out}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{background:rgba(31,78,121,.35)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{background:var(--brand)}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;align-items:center;justify-content:center;cursor:pointer;padding:0}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--brand-dark);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--brand-dark)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-mask{position:fixed;inset:0;background:rgba(27,35,51,.6);z-index:60;border:0}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,color .18s ease-out,filter .18s ease-out}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn:active{filter:brightness(.96)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-hover);color:#fff;box-shadow:var(--sh3);transform:translateY(-2px)}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);color:#fff;box-shadow:var(--sh3);transform:translateY(-2px)}
.btn-outline{border-color:var(--brand);color:var(--brand);background:#fff}
.btn-outline:hover{background:var(--brand-light);color:var(--brand-dark)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-lg{height:48px;padding:0 28px}

/* 徽章与标签 */
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border-radius:var(--r-badge);font-size:12.5px;font-weight:600;background:var(--brand-light);color:var(--brand)}
.badge-accent{background:var(--accent-light);color:var(--accent)}
.badge-muted{background:var(--divider);color:var(--ink-2)}

/* 面包屑 */
.breadcrumb{background:#fff;border-bottom:1px solid var(--divider)}
.breadcrumb-inner{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--ink-3);padding:14px 24px;max-width:1200px;margin:0 auto}
.breadcrumb-inner a{color:var(--ink-3)}
.breadcrumb-inner a:hover{color:var(--brand)}
.breadcrumb-sep{color:#c3ccd8}
.breadcrumb-current{color:var(--ink-2);font-weight:600}

/* Hero */
.hero{background:#fff;padding:56px 0 72px}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-copy h1{margin:16px 0 16px}
.hero-lead{font-size:18px;line-height:1.8;color:var(--ink-2);max-width:34em}
.hero-points{list-style:none;display:flex;flex-wrap:wrap;gap:12px 24px;margin-top:24px}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14.5px;color:var(--ink-2)}
.hero-points svg{width:18px;height:18px;stroke:var(--brand);fill:none;stroke-width:1.5;flex:none}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-media{position:relative;margin:0}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh2)}
.media-badge{position:absolute;left:16px;bottom:16px;background:rgba(255,255,255,.94);color:var(--brand-dark);border-radius:var(--r-badge);padding:8px 12px;font-size:12.5px;font-weight:600;box-shadow:var(--sh1)}
.media-flag{position:absolute;right:-10px;top:-10px;background:var(--accent);color:#fff;border-radius:var(--r-badge);padding:8px 12px;font-size:12.5px;font-weight:600;box-shadow:var(--sh2)}

/* 双栏图文 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-copy h2{margin:16px 0 16px}
.split-copy p{color:var(--ink-2);font-size:15.5px;margin-bottom:16px}
.split-media{margin:0;position:relative}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh2)}
.dot-list{list-style:none;display:grid;gap:12px;margin-top:24px}
.dot-list li{display:flex;gap:10px;font-size:15px;color:var(--ink-2);align-items:flex-start}
.dot-list li::before{content:"";width:8px;height:8px;border-radius:99px;background:var(--accent);flex:none;margin-top:11px}

/* 时间轴 */
.timeline{list-style:none;margin-top:8px}
.tl-item{display:grid;grid-template-columns:72px 20px 1fr;gap:0 20px;position:relative;padding-bottom:36px}
.tl-item:last-child{padding-bottom:0}
.tl-item:not(:last-child)::after{content:"";position:absolute;left:98px;top:26px;bottom:0;width:2px;background:var(--line)}
.tl-num{font-size:22px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;letter-spacing:1px;line-height:1.4}
.tl-dot{width:14px;height:14px;border-radius:99px;background:var(--brand);margin-top:8px;position:relative;z-index:2;box-shadow:0 0 0 4px var(--brand-light)}
.tl-body h3{margin-bottom:8px}
.tl-body p{color:var(--ink-2);font-size:15px;max-width:56em}

/* 卡片 */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh2);overflow:hidden;display:flex;flex-direction:column;transition:transform .2s ease-out,box-shadow .2s ease-out}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh3)}
.card-media{position:relative}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.card-media .badge{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94)}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:19px}
.card-body h3 a{color:var(--ink)}
.card-body h3 a:hover{color:var(--brand)}
.card-text{font-size:14.5px;color:var(--ink-2);line-height:1.8}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--divider);font-size:12.5px;color:var(--ink-3)}
.card-meta time{font-variant-numeric:tabular-nums}

/* 数据带 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh1)}
.stat-num{font-size:30px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.3}
.stat-label{font-size:14px;color:var(--ink-2);margin-top:6px}
.stat-note{font-size:12.5px;color:var(--ink-3);margin-top:10px}

/* FAQ */
.faq-list{max-width:880px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);margin-bottom:12px;overflow:hidden;transition:box-shadow .18s ease-out}
.faq-item[open]{box-shadow:var(--sh2)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"";flex:none;width:16px;height:16px;background:linear-gradient(var(--brand),var(--brand)) center/16px 2px no-repeat,linear-gradient(var(--brand),var(--brand)) center/2px 16px no-repeat;transition:transform .18s ease-out}
.faq-item[open] summary::after{background:linear-gradient(var(--brand),var(--brand)) center/16px 2px no-repeat}
.faq-item summary:focus-visible{outline:2px solid var(--brand);outline-offset:-2px}
.faq-answer{padding:0 22px 20px;font-size:14.5px;line-height:1.85;color:var(--ink-2)}

/* CTA 带 */
.cta-band{background:var(--brand);color:#fff;padding:56px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-kicker{font-size:12.5px;letter-spacing:1px;color:#a9c4dd;font-weight:600;margin-bottom:8px}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,28px)}
.cta-side{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.cta-contact{display:grid;gap:4px;font-size:13.5px;color:#c9d6e4;line-height:1.9}
.cta-contact b{color:#fff}

/* 页脚 */
.site-footer{background:var(--brand-dark);color:#c9d6e4;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 .brand-text{color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.12)}
.footer-desc{font-size:14.5px;color:#c9d6e4;margin:16px 0 16px;max-width:30em}
.footer-contact{font-size:14px;line-height:2;color:#9fb2c8}
.footer-contact b{color:#fff;font-weight:600}
.footer-col h3{font-family:var(--font-sans);font-size:14px;font-weight:600;color:#fff;letter-spacing:.5px;margin-bottom:16px}
.footer-col ul{list-style:none;display:grid;gap:10px}
.footer-col a{color:#c9d6e4;font-size:14.5px}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:20px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:#9fb2c8}
.footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a{color:#9fb2c8}
.footer-bottom a:hover{color:#fff}

/* 响应式 */
@media (max-width:1279px){
  .hero-grid{gap:40px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:288px;max-width:84vw;
    background:#fff;flex-direction:column;align-items:stretch;gap:2px;
    padding:88px 24px 24px;transform:translateX(100%);
    transition:transform .22s ease-out;box-shadow:-10px 0 32px -18px rgba(16,32,58,.45);
    z-index:70;overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0)}
  .nav-link{padding:14px 0;font-size:16px;border-bottom:1px solid var(--divider)}
  .nav-link::after{bottom:8px;left:0;right:auto;width:0;transition:width .18s ease-out}
  .nav-link:hover::after{width:26px}
  .nav-link.active::after{width:26px;background:var(--brand)}
  .hero{padding:40px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .split{grid-template-columns:1fr;gap:32px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .breadcrumb-inner{padding:12px 16px}
  .section{padding:56px 0}
  .grid-3{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .tl-item{grid-template-columns:52px 18px 1fr;gap:0 14px}
  .tl-item:not(:last-child)::after{left:73px}
  .tl-num{font-size:18px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .btn{height:46px}
  .btn-lg{height:46px;width:100%}
  .cta-side{width:100%}
  .cta-side .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:479px){
  .topbar{font-size:12px}
  .topbar-tip{display:none}
  .topbar-right{gap:12px}
  .brand-text{font-size:17px}
  .hero-actions .btn{width:100%}
  .hero-points{gap:10px 16px}
  .card-body{padding:18px}
  .faq-item summary{padding:16px 18px;font-size:16px}
  .faq-answer{padding:0 18px 18px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .card:hover,.btn:hover{transform:none !important}
}

/* roulang page: category2 */
:root{
  --c-primary:#1F4E79;
  --c-primary-dark:#16395A;
  --c-primary-soft:#E8F0F8;
  --c-accent:#B4445F;
  --c-accent-soft:#FBEEF1;
  --c-sand:#F6F2EC;
  --c-success:#2E7D5B;
  --c-warn:#C0392B;
  --c-tip:#B7791F;
  --t-strong:#1B2333;
  --t-body:#4A5568;
  --t-mute:#7A8699;
  --line:#E3E8EF;
  --line-soft:#EDF1F6;
  --bg-page:#F6F8FB;
  --bg-card:#FFFFFF;
  --bg-tint:#F1F5FA;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:6px;
  --sh-1:0 1px 2px rgba(16,32,58,.04);
  --sh-2:0 8px 24px -12px rgba(16,32,58,.14);
  --sh-3:0 14px 32px -14px rgba(16,32,58,.22);
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--t-body);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--t-strong);line-height:1.25;font-weight:600}
h1,h2{font-family:var(--font-serif)}
h1{font-size:44px}
h2{font-size:30px}
h3{font-size:21px}
h4{font-size:17px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease,opacity .18s ease}
a:hover{color:#16395A}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* 顶部信息条 */
.topbar{background:var(--c-primary-dark);color:#fff;font-size:12.5px;line-height:1}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px}
.topbar-left{display:flex;align-items:center;gap:12px;min-width:0}
.topbar-domain{opacity:.78;letter-spacing:.02em}
.topbar-note{color:rgba(255,255,255,.62)}
.topbar-note::before{content:"";display:inline-block;width:1px;height:11px;background:rgba(255,255,255,.28);margin-right:12px;vertical-align:-1px}
.topbar-right{display:flex;align-items:center;gap:18px}
.topbar-right a{color:rgba(255,255,255,.86)}
.topbar-right a:hover{color:#fff}
.btn-outline-light{border:1px solid rgba(255,255,255,.5);color:#fff;border-radius:var(--r-btn);padding:5px 12px;font-size:12.5px;transition:background .18s ease,border-color .18s ease}
.btn-outline-light:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.site-header.scrolled{box-shadow:var(--sh-2)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand:hover{opacity:.9}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--c-primary-soft);display:grid;place-items:center}
.brand-mark svg{width:20px;height:20px;fill:none;stroke:var(--c-primary);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-family:var(--font-serif);font-size:19px;font-weight:600;color:var(--t-strong);letter-spacing:.01em}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;padding:10px 14px;border-radius:var(--r-btn);font-size:15px;color:var(--t-body)}
.nav-link:hover{background:var(--bg-page);color:var(--c-primary)}
.nav-link.active{color:var(--c-primary);font-weight:600}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--c-primary);border-radius:2px}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--r-btn);align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t-strong);position:relative;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t-strong);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;font-size:15px;font-weight:500;white-space:nowrap;transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease}
.btn:active{filter:brightness(.96)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:#c14e69;color:#fff;box-shadow:var(--sh-3)}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary);background:#fff}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.btn-solid{background:var(--c-primary);color:#fff}
.btn-solid:hover{background:#2a618f;color:#fff;box-shadow:var(--sh-3)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-xs{height:26px;padding:0 12px;font-size:12.5px;border-radius:var(--r-badge)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed}

/* 徽章与标签 */
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:var(--r-badge);font-size:12.5px;font-weight:500;background:var(--c-primary-soft);color:var(--c-primary)}
.badge-accent{background:var(--c-accent-soft);color:var(--c-accent)}
.badge-tip{background:#FBF3E4;color:var(--c-tip)}
.badge-success{background:#E7F2ED;color:var(--c-success)}

/* 面包屑 */
.crumb{padding:20px 0 0}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t-mute)}
.crumb li::after{content:"/";margin-left:8px;color:#C6CED9}
.crumb li:last-child::after{display:none}
.crumb a{color:var(--t-mute)}
.crumb a:hover{color:var(--c-primary)}
.crumb .current{color:var(--t-mute)}

/* 分类首屏 */
.cat-hero{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--line-soft)}
.cat-hero::before{content:"";position:absolute;inset:0;background-image:url("/assets/images/backpic/back-2.png");background-size:cover;background-position:center right;opacity:.1}
.cat-hero-inner{position:relative;display:grid;grid-template-columns:1.35fr 1fr;gap:48px;align-items:center;padding:56px 0 64px}
.cat-hero h1{font-size:44px;margin:16px 0 14px;letter-spacing:.01em}
.cat-hero-sub{font-size:18px;line-height:1.75;color:var(--t-body);max-width:34em}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin:22px 0 28px}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14.5px;color:var(--t-body)}
.hero-points svg{width:18px;height:18px;fill:none;stroke:var(--c-primary);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.compare-panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-2);padding:24px}
.compare-panel h2{font-size:17px;font-family:var(--font-sans);font-weight:600;margin-bottom:6px}
.compare-panel .panel-note{font-size:13px;color:var(--t-mute);margin-bottom:16px}
.plan-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 0;border-top:1px solid var(--line-soft)}
.plan-row:first-of-type{border-top:0}
.plan-name{font-size:15px;font-weight:600;color:var(--t-strong)}
.plan-name small{display:block;font-size:12.5px;font-weight:400;color:var(--t-mute);margin-top:2px}
.plan-price{font-size:19px;font-weight:600;color:var(--c-primary);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.plan-price span{font-size:12.5px;color:var(--t-mute);font-weight:400;margin-left:2px}

/* 通用板块 */
.section{padding:96px 0}
.section-tint{background:var(--bg-tint)}
.section-sand{background:var(--c-sand)}
.section-head{max-width:720px;margin-bottom:32px}
.section-head h2{margin-bottom:12px}
.section-head p{font-size:16px;color:var(--t-body)}
.eyebrow{display:inline-block;font-size:12.5px;font-weight:600;letter-spacing:.14em;color:var(--c-primary);margin-bottom:10px}

/* 胶囊筛选 */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.chip{display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:14px;color:var(--t-body);transition:all .18s ease}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary)}
.chip.is-current{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:500}

/* 图文矩阵 */
.mix-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:24px;align-items:start}
.mix-col{display:flex;flex-direction:column;gap:24px}
.card{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-3)}
.card-media{position:relative;overflow:hidden;background:var(--bg-tint)}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-media.tall{aspect-ratio:16/10}
.card-media.short{aspect-ratio:16/9}
.card-media .floating{position:absolute;left:16px;bottom:16px}
.card-body{padding:24px}
.card-body h3{font-size:19px;margin-bottom:10px}
.card-body p{font-size:15px;color:var(--t-body)}
.card-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14.5px;font-weight:500}
.card-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease}
.card-link:hover svg{transform:translateX(2px)}
.plain-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:24px;transition:transform .2s ease,box-shadow .2s ease}
.plain-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3)}
.plain-card .ico{width:42px;height:42px;border-radius:12px;background:var(--c-primary-soft);display:grid;place-items:center;margin-bottom:16px}
.plain-card .ico svg{width:22px;height:22px;fill:none;stroke:var(--c-primary);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.plain-card h3{font-size:18px;margin-bottom:10px}
.plain-card p{font-size:14.5px}
.mini-list{margin-top:14px}
.mini-list li{position:relative;padding-left:18px;font-size:14px;color:var(--t-body);line-height:1.9}
.mini-list li::before{content:"";position:absolute;left:0;top:13px;width:6px;height:6px;border-radius:50%;background:var(--c-primary);opacity:.55}

/* 对比表 */
.table-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-2);overflow:hidden}
.cmp-table{width:100%;border-collapse:collapse;font-size:15px}
.cmp-table caption{text-align:left;padding:20px 24px 0;font-size:14px;color:var(--t-mute)}
.cmp-table th,.cmp-table td{padding:16px 24px;text-align:left;border-bottom:1px solid var(--line-soft)}
.cmp-table thead th{background:var(--bg-tint);font-size:14px;font-weight:600;color:var(--t-strong);position:sticky;top:0}
.cmp-table tbody tr:nth-child(even){background:#F9FBFD}
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table td:first-child{background:var(--c-primary-soft);color:var(--c-primary-dark);font-weight:600;width:26%}
.cmp-table .val{font-variant-numeric:tabular-nums;color:var(--t-strong);font-weight:500}
.table-note{padding:16px 24px 20px;font-size:12.5px;color:var(--t-mute);border-top:1px solid var(--line-soft)}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;margin-top:8px}
.step{position:relative;padding-top:28px}
.step::before{content:"";position:absolute;top:9px;left:0;right:-24px;height:1px;background:var(--line)}
.step:last-child::before{right:0;background:linear-gradient(to right,var(--line),transparent)}
.step .dot{position:absolute;top:0;left:0;width:18px;height:18px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 0 4px var(--c-primary-soft)}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14.5px}
.step .step-no{font-size:12.5px;color:var(--t-mute);font-variant-numeric:tabular-nums;letter-spacing:.08em}

/* 选择建议 / FAQ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 0;font-size:17px;font-weight:600;color:var(--t-strong);cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"＋";font-size:18px;font-weight:400;color:var(--c-primary);flex-shrink:0;transition:transform .18s ease}
.faq-item[open] summary::after{content:"－"}
.faq-item summary:hover{color:var(--c-primary)}
.faq-body{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--t-body);max-width:70em}

/* 更多条目占位 */
.more-strip{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding:22px 24px;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);margin-top:24px}
.more-strip p{font-size:14.5px;color:var(--t-body)}
.more-strip p b{color:var(--t-strong)}

/* 咨询 CTA 带 */
.cta-band{background:var(--c-primary);color:#fff;border-radius:var(--r-card);padding:36px 40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:8px}
.cta-band p{color:rgba(255,255,255,.8);font-size:15px}
.cta-band .cta-meta{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:12px;font-size:13.5px;color:rgba(255,255,255,.78)}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px}
.cta-actions .text-link{color:#fff;text-decoration:underline;text-underline-offset:3px;font-size:14.5px}
.cta-actions .text-link:hover{color:#fff;opacity:.85}

/* 页脚 */
.site-footer{background:var(--c-primary-dark);color:rgba(255,255,255,.78);margin-top:96px;padding:64px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr .9fr;gap:40px}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.12)}
.footer-desc{margin:18px 0 20px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:30em}
.footer-contact{font-size:13.5px;line-height:2;color:rgba(255,255,255,.72)}
.footer-contact b{color:#fff;font-weight:500}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:18px;font-family:var(--font-sans);font-weight:600}
.footer-col li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.76);font-size:14px}
.footer-col a:hover{color:#fff}
.footer-bottom{margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.14);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;font-size:12.5px;color:rgba(255,255,255,.6)}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom-links a{color:rgba(255,255,255,.66)}
.footer-bottom-links a:hover{color:#fff}

/* 响应式 */
@media (max-width:1023px){
  h1{font-size:34px}
  h2{font-size:24px}
  .section{padding:72px 0}
  .nav-toggle{display:inline-flex}
  .nav-links{position:absolute;top:calc(100% + 8px);left:16px;right:16px;flex-direction:column;align-items:stretch;gap:2px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-3);padding:12px;display:none}
  .nav-links.open{display:flex}
  .nav-link{padding:12px 14px}
  .nav-link.active::after{display:none}
  .nav-link.active{background:var(--c-primary-soft)}
  .cat-hero-inner{grid-template-columns:1fr;gap:32px;padding:40px 0 56px}
  .cat-hero h1{font-size:34px}
  .mix-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr);gap:32px 24px}
  .step:nth-child(2)::before{right:0;background:linear-gradient(to right,var(--line),transparent)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .site-footer{margin-top:72px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  body{font-size:15.5px}
  h1,.cat-hero h1{font-size:30px}
  h2{font-size:23px}
  h3{font-size:18px}
  .nav-inner{height:60px}
  .brand-text{font-size:17px}
  .section{padding:56px 0}
  .section-head{margin-bottom:24px}
  .cat-hero-sub{font-size:16px}
  .cat-hero-inner{padding:32px 0 48px}
  .compare-panel{padding:20px}
  .steps{grid-template-columns:1fr}
  .step::before{display:none}
  .cmp-table thead{display:none}
  .cmp-table,.cmp-table tbody,.cmp-table tr,.cmp-table td{display:block;width:100%}
  .cmp-table tr{border-bottom:1px solid var(--line-soft);padding:8px 0 4px}
  .cmp-table tr:last-child{border-bottom:0}
  .cmp-table td{border-bottom:0;padding:8px 16px}
  .cmp-table td:first-child{width:auto;background:transparent;color:var(--c-primary);padding-top:12px;font-size:13px;letter-spacing:.02em}
  .cmp-table tbody tr:nth-child(even){background:transparent}
  .cta-band{padding:28px 22px;border-radius:var(--r-card)}
  .cta-band h2{font-size:21px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .btn{height:46px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:479px){
  .topbar-note{display:none}
  .topbar-left .topbar-note::before{display:none}
  .topbar-right a:not(.btn){display:none}
  .plan-row{flex-direction:column;align-items:flex-start;gap:6px}
  .hero-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .card:hover,.plain-card:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --primary:#1F4E79;
  --primary-dark:#16395A;
  --primary-light:#E8F0F8;
  --accent:#B4445F;
  --accent-light:#FBEEF1;
  --sand:#F6F2EC;
  --ok:#2E7D5B;
  --warn:#C0392B;
  --tip:#B7791F;
  --text:#1B2333;
  --text-2:#4A5568;
  --text-3:#7A8699;
  --line:#E3E8EF;
  --divider:#EDF1F6;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --invert:#F1F5FA;
  --r-card:14px;
  --r-lg:12px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:6px;
  --sh-1:0 1px 2px rgba(16,32,58,.04);
  --sh-2:0 8px 24px -12px rgba(16,32,58,.14);
  --sh-3:0 14px 32px -14px rgba(16,32,58,.22);
  --w:1200px;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-num:"Inter","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:600;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
::selection{background:var(--primary-light);color:var(--primary-dark);}

.container{width:100%;max-width:var(--w);margin:0 auto;padding:0 24px;}
.narrow{max-width:900px;margin:0 auto;}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--primary-dark);
  color:#fff;
  font-size:12.5px;
  line-height:1;
  letter-spacing:.01em;
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:36px;
  gap:16px;
}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0;}
.topbar-domain{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  color:rgba(255,255,255,.78);
}
.topbar-tip{
  color:rgba(255,255,255,.92);
  border-left:1px solid rgba(255,255,255,.22);
  padding-left:14px;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.topbar-right{display:flex;align-items:center;gap:16px;flex:none;}
.topbar-right a{color:rgba(255,255,255,.88);}
.topbar-right a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.topbar-btn{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border:1px solid rgba(255,255,255,.5);
  border-radius:var(--r-badge);
  color:#fff;
  transition:background .18s ease,border-color .18s ease;
}
.topbar-btn:hover{background:rgba(255,255,255,.14);border-color:#fff;text-decoration:none;}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.nav-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:34px;height:34px;
  border-radius:10px;
  background:var(--primary-light);
  display:grid;place-items:center;
  flex:none;
}
.brand-mark svg{width:20px;height:20px;fill:none;stroke:var(--primary);stroke-width:1.5;}
.brand-text{
  font-family:var(--font-serif);
  font-size:19px;
  font-weight:600;
  letter-spacing:.02em;
  color:var(--primary-dark);
  white-space:nowrap;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 14px;
  border-radius:8px;
  font-size:15px;
  color:var(--text-2);
  transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--primary);background:var(--primary-light);}
.nav-link.active{color:var(--primary);font-weight:600;}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--primary);
}
.nav-right{display:flex;align-items:center;gap:12px;flex:none;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:#fff;
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:12px;
  width:20px;height:2px;
  border-radius:2px;
  background:var(--primary-dark);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:21px;}
.nav-toggle span::before{content:"";left:0;top:-6px;}
.nav-toggle span::after{content:"";left:0;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;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:500;
  white-space:nowrap;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-lg{height:48px;padding:0 28px;font-size:16px;}
.btn-accent{
  background:var(--accent);
  color:#fff;
  box-shadow:var(--sh-1);
}
.btn-accent:hover{background:#C1546E;box-shadow:var(--sh-3);transform:translateY(-2px);}
.btn-accent:active{background:#A03A54;transform:translateY(0);}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:#245B8C;box-shadow:var(--sh-3);transform:translateY(-2px);}
.btn-primary:active{background:#1A4468;}
.btn-outline{
  border:1px solid var(--primary);
  color:var(--primary);
  background:#fff;
}
.btn-outline:hover{background:var(--primary-light);box-shadow:var(--sh-2);}
.btn-ghost-light{
  border:1px solid rgba(255,255,255,.55);
  color:#fff;
  background:transparent;
}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);border-color:#fff;}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  padding:20px 0 0;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:#C4CDDA;}
.breadcrumb .current{color:var(--text-2);}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:linear-gradient(180deg,#F1F5FA 0%,#F6F8FB 100%);
  border-bottom:1px solid var(--line);
  padding-bottom:72px;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center right;
  opacity:.09;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}
.hero-core{
  max-width:780px;
  margin:40px auto 0;
  text-align:center;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:28px;
  padding:0 12px;
  border-radius:var(--r-badge);
  background:var(--primary-light);
  color:var(--primary);
  font-size:12.5px;
  font-weight:500;
}
.hero-badge svg{width:16px;height:16px;fill:none;stroke:var(--primary);stroke-width:1.5;}
.hero-core h1{
  font-family:var(--font-serif);
  font-size:clamp(30px,4vw,44px);
  font-weight:600;
  letter-spacing:.01em;
  color:var(--primary-dark);
  margin-top:20px;
}
.hero-lead{
  margin:18px auto 0;
  max-width:620px;
  font-size:17px;
  line-height:1.8;
  color:var(--text-2);
}
.hero-search{
  display:flex;
  gap:8px;
  align-items:center;
  max-width:660px;
  margin:32px auto 0;
  padding:8px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-2);
}
.hero-search .search-icon{
  flex:none;
  width:20px;height:20px;
  margin-left:12px;
  stroke:var(--text-3);
  fill:none;
  stroke-width:1.5;
}
.hero-search input{
  flex:1;
  min-width:0;
  height:46px;
  border:none;
  background:transparent;
  padding:0 8px;
  font-size:15px;
  outline:none;
}
.hero-search input::placeholder{color:var(--text-3);}
.hero-search .btn{flex:none;}
.chips{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:10px;
  margin-top:24px;
}
.chip{
  display:inline-flex;
  align-items:center;
  height:32px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--text-2);
  font-size:13px;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.chip:hover{border-color:var(--primary);color:var(--primary);}
.chip.active{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:500;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-alt{background:#fff;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-block;
  font-family:var(--font-num);
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--accent);
  margin-bottom:12px;
}
.section-title{
  font-family:var(--font-serif);
  font-size:clamp(23px,2.6vw,30px);
  font-weight:600;
  color:var(--text);
}
.section-desc{
  margin-top:14px;
  font-size:15.5px;
  color:var(--text-2);
}

/* ---------- 快捷入口卡 ---------- */
.quick-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.quick-card{
  display:flex;
  align-items:flex-start;
  gap:16px;
  padding:26px 24px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.quick-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-3);
  border-color:#D3DFEC;
}
.quick-icon{
  flex:none;
  width:44px;height:44px;
  border-radius:var(--r-lg);
  background:var(--primary-light);
  display:grid;place-items:center;
}
.quick-icon svg{width:22px;height:22px;fill:none;stroke:var(--primary);stroke-width:1.5;}
.quick-text{min-width:0;}
.quick-text h3{font-size:17px;font-weight:600;color:var(--text);}
.quick-text p{margin-top:6px;font-size:13.5px;line-height:1.7;color:var(--text-3);}
.quick-arrow{
  margin-left:auto;
  flex:none;
  width:20px;height:20px;
  stroke:var(--text-3);
  fill:none;
  stroke-width:1.5;
  transition:transform .2s ease,stroke .2s ease;
}
.quick-card:hover .quick-arrow{transform:translateX(2px);stroke:var(--primary);}

/* ---------- FAQ 手风琴 ---------- */
.faq-group{margin-bottom:44px;}
.faq-group:last-child{margin-bottom:0;}
.faq-group-title{
  display:flex;
  align-items:center;
  gap:12px;
  font-family:var(--font-serif);
  font-size:21px;
  font-weight:600;
  color:var(--text);
  margin-bottom:16px;
}
.faq-index{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:12.5px;
  font-weight:600;
  color:var(--accent);
  background:var(--accent-light);
  padding:3px 10px;
  border-radius:var(--r-badge);
}
.acc{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.acc-item + .acc-item{border-top:1px solid var(--divider);}
.acc-item summary{
  list-style:none;
  display:flex;
  align-items:center;
  gap:16px;
  padding:20px 24px;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
  transition:background .18s ease,color .18s ease;
}
.acc-item summary::-webkit-details-marker{display:none;}
.acc-item summary:hover{background:#F9FBFD;color:var(--primary);}
.acc-item summary:focus-visible{outline:2px solid var(--primary);outline-offset:-2px;}
.acc-icon{
  position:relative;
  flex:none;
  width:22px;height:22px;
  margin-left:auto;
}
.acc-icon::before,
.acc-icon::after{
  content:"";
  position:absolute;
  background:var(--primary);
  border-radius:2px;
  transition:transform .18s ease,opacity .18s ease;
}
.acc-icon::before{left:3px;right:3px;top:10px;height:2px;}
.acc-icon::after{top:3px;bottom:3px;left:10px;width:2px;}
.acc-item[open] .acc-icon::after{transform:scaleY(0);opacity:0;}
.acc-item[open] summary{color:var(--primary);}
.acc-body{
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}
.acc-body p + p{margin-top:12px;}
.acc-body a{color:var(--primary);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;text-decoration-color:rgba(31,78,121,.3);}
.acc-body a:hover{text-decoration-color:var(--primary);}

/* ---------- 资料准备 双栏 ---------- */
.split{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}
.split-text p.lead{
  margin-top:16px;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
}
.checklist{margin-top:26px;}
.checklist li{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:13px 0;
  border-bottom:1px solid var(--divider);
  font-size:15px;
  color:var(--text-2);
}
.checklist li:last-child{border-bottom:none;}
.check-icon{
  flex:none;
  width:20px;height:20px;
  margin-top:5px;
  stroke:var(--ok);
  fill:none;
  stroke-width:1.8;
}
.split-figure{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-2);
  background:var(--invert);
}
.split-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.float-tag{
  position:absolute;
  left:20px;
  bottom:20px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:34px;
  padding:0 14px;
  border-radius:var(--r-badge);
  background:rgba(255,255,255,.94);
  color:var(--primary-dark);
  font-size:13px;
  font-weight:500;
  box-shadow:var(--sh-2);
}
.float-tag svg{width:16px;height:16px;fill:none;stroke:var(--accent);stroke-width:1.5;}

/* ---------- 底部联系 CTA ---------- */
.cta-wrap{padding:0 0 96px;}
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--primary-dark);
  border-radius:18px;
  padding:48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  flex-wrap:wrap;
  box-shadow:var(--sh-3);
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-80px;
  top:-80px;
  width:280px;height:280px;
  border-radius:50%;
  background:rgba(255,255,255,.05);
  pointer-events:none;
}
.cta-left{position:relative;z-index:1;max-width:560px;}
.cta-left h2{
  font-family:var(--font-serif);
  font-size:clamp(22px,2.4vw,28px);
  color:#fff;
}
.cta-left p{
  margin-top:12px;
  font-size:15px;
  color:rgba(255,255,255,.82);
}
.cta-actions{
  position:relative;
  z-index:1;
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}
.cta-note{
  width:100%;
  margin-top:26px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.16);
  font-size:12.5px;
  color:rgba(255,255,255,.7);
  display:flex;
  flex-wrap:wrap;
  gap:8px 28px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--primary-dark);
  color:rgba(255,255,255,.82);
  padding:72px 0 28px;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.site-footer .brand-mark{background:rgba(255,255,255,.12);}
.site-footer .brand-mark svg{stroke:#fff;}
.site-footer .brand-text{color:#fff;}
.footer-desc{
  margin-top:16px;
  font-size:13.5px;
  line-height:1.8;
  color:rgba(255,255,255,.72);
  max-width:320px;
}
.footer-contact{
  margin-top:18px;
  font-size:13px;
  line-height:2;
  color:rgba(255,255,255,.72);
}
.footer-contact b{
  color:#fff;
  font-weight:500;
  font-family:var(--font-num);
}
.footer-col h3{
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{
  color:rgba(255,255,255,.74);
  font-size:13.5px;
  transition:color .18s ease;
}
.footer-col ul a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:24px;
  font-size:12.5px;
  color:rgba(255,255,255,.62);
}
.footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom-links a{color:rgba(255,255,255,.7);}
.footer-bottom-links a:hover{color:#fff;}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  position:fixed;
  top:0;right:0;
  z-index:90;
  width:300px;
  max-width:86vw;
  height:100%;
  background:#fff;
  box-shadow:-12px 0 32px rgba(16,32,58,.18);
  transform:translateX(100%);
  transition:transform .24s ease;
  padding:24px;
  overflow-y:auto;
  display:flex;
  flex-direction:column;
  gap:8px;
}
.drawer.open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  margin-bottom:12px;
  border-bottom:1px solid var(--divider);
}
.drawer-head .brand-text{font-size:17px;}
.drawer-close{
  width:36px;height:36px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  display:grid;place-items:center;
}
.drawer-close svg{width:18px;height:18px;stroke:var(--text-2);fill:none;stroke-width:1.5;}
.drawer a.drawer-link{
  display:block;
  padding:13px 14px;
  border-radius:var(--r-btn);
  font-size:15px;
  color:var(--text-2);
  transition:background .18s ease,color .18s ease;
}
.drawer a.drawer-link:hover{background:var(--primary-light);color:var(--primary);}
.drawer a.drawer-link.active{background:var(--primary-light);color:var(--primary);font-weight:600;}
.drawer .btn{width:100%;margin-top:16px;}
.drawer-meta{
  margin-top:auto;
  padding-top:20px;
  font-size:12.5px;
  line-height:1.9;
  color:var(--text-3);
  border-top:1px solid var(--divider);
}
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(27,35,51,.6);
  opacity:0;
  visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease;
  z-index:80;
}
.drawer-mask.open{opacity:1;visibility:visible;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:block;}
  .nav-right .btn{display:none;}
  .section{padding:72px 0;}
  .quick-grid{grid-template-columns:1fr 1fr;}
  .split{grid-template-columns:1fr;gap:36px;}
  .split-figure{order:-1;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:36px;}
  .cta-wrap{padding-bottom:72px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  body{font-size:15.5px;}
  .topbar-tip{display:none;}
  .nav-inner{height:60px;gap:12px;}
  .brand-text{font-size:17px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:28px;}
  .hero-core{margin-top:28px;}
  .hero-search{flex-wrap:wrap;padding:10px;}
  .hero-search .search-icon{display:none;}
  .hero-search input{width:100%;flex:1 1 100%;padding:0 6px;}
  .hero-search .btn{width:100%;height:44px;}
  .quick-grid{grid-template-columns:1fr;}
  .acc-item summary{padding:18px 18px;font-size:16px;gap:12px;}
  .acc-body{padding:0 18px 20px;font-size:14.5px;}
  .cta-band{padding:28px 22px;border-radius:14px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .site-footer{padding:56px 0 24px;}
}
@media (max-width:479px){
  .topbar-right a{display:none;}
  .topbar-right .topbar-btn{display:inline-flex;}
  .breadcrumb{font-size:12.5px;gap:6px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  html{scroll-behavior:auto;}
  .btn:hover,.quick-card:hover{transform:none;}
}