/* roulang page: index */
/* ===== 设计变量 ===== */
:root{
  --c-ink-900:#14102B;
  --c-ink-800:#1E1840;
  --c-primary:#3A2F86;
  --c-primary-d:#2C2470;
  --c-primary-s:#EDEAF9;
  --c-teal:#1FA394;
  --c-teal-s:#E4F5F2;
  --c-gold:#E0A63C;
  --c-bg:#F8F7F4;
  --c-surface:#FFFFFF;
  --c-border:#E7E4DE;
  --c-border-d:#2E2750;
  --c-text:#1B1730;
  --c-text-2:#5B5670;
  --c-text-3:#8E8AA0;
  --c-on-dark:#ECEAF6;
  --c-on-dark-2:#A9A4C4;
  --c-danger:#C0392B;
  --c-success:#1FA394;

  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --r-pill:999px;
  --r-img:16px;

  --sh-1:0 1px 2px rgba(20,16,43,.04);
  --sh-2:0 10px 28px -12px rgba(58,47,134,.22);
  --sh-focus:0 0 0 3px rgba(58,47,134,.22);

  --s-1:8px;--s-2:12px;--s-3:16px;--s-4:24px;--s-5:32px;--s-6:48px;--s-7:64px;--s-8:88px;--s-9:96px;

  --font:'Inter','PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
}

/* ===== reset / base ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
a.link{color:var(--c-teal);text-decoration:underline;text-underline-offset:3px;}
a.link:hover{color:var(--c-primary);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
svg{display:block;}
:focus-visible{outline:none;box-shadow:var(--sh-focus);border-radius:8px;}
::selection{background:rgba(58,47,134,.16);}

/* ===== 布局容器 ===== */
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-sm{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:30px;line-height:1.47;font-weight:700;letter-spacing:.01em;}
.section-head p{margin-top:14px;font-size:16px;line-height:1.9;color:var(--c-text-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;line-height:1.6;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-s);border-radius:var(--r-pill);
  padding:5px 12px;margin-bottom:16px;
}
.dot{width:6px;height:6px;border-radius:50%;background:var(--c-teal);display:inline-block;}

/* ===== 顶部导航（卡片化面板） ===== */
.site-header{position:sticky;top:0;z-index:90;}
.nav-shell{padding:12px clamp(16px,3vw,24px) 0;}
.nav-card{
  max-width:1200px;margin:0 auto;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  min-height:72px;
  padding:0 20px;
  display:flex;align-items:center;gap:20px;
  position:relative;
  transition:box-shadow .18s ease,border-color .18s ease;
}
.nav-card.is-stuck{box-shadow:var(--sh-2);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  flex:0 0 auto;
}
.brand-mark svg{width:18px;height:18px;}
.brand-text{font-size:16px;font-weight:700;letter-spacing:.01em;color:var(--c-text);white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;flex:1 1 auto;min-width:0;}
.nav-item{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 12px;border-radius:var(--r-sm);
  font-size:14px;font-weight:500;color:var(--c-text-2);
  white-space:nowrap;
  border-bottom:2px solid transparent;
  transition:background .18s ease,color .18s ease;
}
.nav-item svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto;}
.nav-item:hover{background:var(--c-primary-s);color:var(--c-primary);}
.nav-item.is-active{background:var(--c-primary-s);color:var(--c-primary);border-bottom-color:var(--c-primary);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-ghost{font-size:14px;font-weight:500;color:var(--c-text-2);padding:8px 6px;transition:color .18s ease;}
.nav-ghost:hover{color:var(--c-primary);}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--c-border);
  background:var(--c-surface);border-radius:var(--r-sm);
  align-items:center;justify-content:center;cursor:pointer;flex:0 0 auto;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);position:relative;border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text);border-radius:2px;
  transition:transform .18s ease,top .18s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);}
.nav-cta-mobile{display:none;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,color .18s ease,transform .18s ease,border-color .18s ease;
}
.btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-d);transform:translateY(-1px);}
.btn-accent{background:var(--c-gold);color:var(--c-ink-900);}
.btn-accent:hover{background:#D2962E;transform:translateY(-1px);}
.btn-outline{background:transparent;border-color:var(--c-border);color:var(--c-text);}
.btn-outline:hover{background:var(--c-primary-s);border-color:var(--c-primary-s);color:var(--c-primary);}
.btn-ghost-light{background:transparent;border-color:var(--c-border-d);color:var(--c-on-dark);}
.btn-ghost-light:hover{background:rgba(236,234,246,.08);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn:disabled,.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}
.btn.is-loading{pointer-events:none;}
.btn.is-loading::before{
  content:"";width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.35);border-top-color:#fff;
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;padding:64px 0 40px;}
.hero-stars{position:absolute;right:-40px;top:-20px;width:520px;height:420px;opacity:.12;pointer-events:none;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;position:relative;}
.hero h1{font-size:40px;line-height:1.3;font-weight:700;letter-spacing:.01em;}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.9;color:var(--c-text-2);max-width:520px;}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-trust{
  margin-top:32px;display:flex;flex-wrap:wrap;gap:22px;
  padding-top:24px;border-top:1px solid var(--c-border);
}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-text-2);}
.hero-trust svg{width:17px;height:17px;stroke:var(--c-teal);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.hero-figure{position:relative;border-radius:20px;overflow:hidden;aspect-ratio:16/11;background:var(--c-primary-s);border:1px solid var(--c-border);}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-float{
  position:absolute;left:16px;bottom:16px;
  background:var(--c-surface);border-radius:var(--r-md);
  box-shadow:var(--sh-2);border:1px solid var(--c-border);
  padding:12px 16px;display:flex;align-items:center;gap:10px;
}
.hero-float strong{display:block;font-size:14px;font-weight:600;line-height:1.5;}
.hero-float span{display:block;font-size:13px;color:var(--c-text-3);line-height:1.6;}
.pulse{width:9px;height:9px;border-radius:50%;background:var(--c-teal);box-shadow:0 0 0 4px rgba(31,163,148,.16);flex:0 0 auto;}

/* ===== 入口卡片条 ===== */
.entry-strip{padding:8px 0 0;}
.entry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.entry-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);
  padding:20px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:10px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-s);}
.entry-icon{
  width:38px;height:38px;border-radius:11px;background:var(--c-primary-s);
  display:flex;align-items:center;justify-content:center;
}
.entry-icon svg{width:19px;height:19px;stroke:var(--c-primary);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.entry-card h3{font-size:16px;font-weight:600;line-height:1.5;}
.entry-card p{font-size:13.5px;line-height:1.75;color:var(--c-text-2);}
.entry-more{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--c-primary);margin-top:auto;}
.entry-more svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease;}
.entry-card:hover .entry-more svg{transform:translateX(3px);}

/* ===== 能力/服务区（左粘性标题 + 右双列） ===== */
.svc-wrap{display:grid;grid-template-columns:320px 1fr;gap:56px;align-items:start;}
.svc-head{position:sticky;top:104px;}
.svc-head h2{font-size:30px;line-height:1.47;font-weight:700;}
.svc-head p{margin-top:14px;font-size:15px;line-height:1.9;color:var(--c-text-2);}
.svc-head .btn{margin-top:24px;}
.svc-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.svc-col{display:flex;flex-direction:column;gap:24px;}
.svc-col.offset{padding-top:44px;}
.svc-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.svc-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-s);}
.svc-card h3{font-size:18px;font-weight:600;line-height:1.6;display:flex;align-items:center;gap:10px;}
.svc-card h3::before{content:"";width:3px;height:18px;border-radius:2px;background:var(--c-primary);flex:0 0 auto;}
.svc-card p{margin-top:10px;font-size:14.5px;line-height:1.85;color:var(--c-text-2);}
.svc-list{margin-top:14px;display:flex;flex-direction:column;gap:10px;}
.svc-list li{position:relative;padding-left:16px;font-size:14px;line-height:1.75;color:var(--c-text-2);}
.svc-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--c-teal);opacity:.75;}

/* ===== 数据带（深色） ===== */
.stats-band{background:var(--c-ink-800);color:var(--c-on-dark);padding:80px 0;}
.stats-band h2{font-size:30px;font-weight:700;line-height:1.47;color:#fff;}
.stats-band .lead{margin-top:14px;font-size:15px;line-height:1.9;color:var(--c-on-dark-2);max-width:680px;}
.stats-grid{margin-top:44px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-card{border:1px solid var(--c-border-d);border-radius:var(--r-lg);padding:24px;background:rgba(255,255,255,.02);}
.stat-num{font-size:44px;line-height:1;font-weight:700;letter-spacing:.01em;color:var(--c-gold);}
.stat-card:nth-child(even) .stat-num{color:var(--c-teal);}
.stat-label{margin-top:14px;font-size:14px;line-height:1.7;color:var(--c-on-dark-2);}
.stats-note{margin-top:28px;font-size:13px;line-height:1.7;color:var(--c-on-dark-2);}
.stats-divider{height:1px;background:var(--c-border-d);margin-top:32px;}

/* ===== 案例区 ===== */
.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.case-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.case-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-s);}
.case-thumb{aspect-ratio:16/9;background:var(--c-primary-s);overflow:hidden;}
.case-thumb img{width:100%;height:100%;object-fit:cover;}
.case-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.case-body h3{font-size:19px;font-weight:600;line-height:1.6;}
.case-body p{font-size:14.5px;line-height:1.85;color:var(--c-text-2);}
.case-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-teal);margin-top:auto;}
.case-link svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease;}
.case-card:hover .case-link svg{transform:translateX(3px);}
.badge{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;line-height:1.6;
  padding:4px 10px;border-radius:var(--r-pill);
  background:var(--c-primary-s);color:var(--c-primary);
}
.badge-teal{background:var(--c-teal-s);color:var(--c-teal);}

/* ===== 流程区 ===== */
.flow-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative;}
.flow-grid::before{
  content:"";position:absolute;left:8%;right:8%;top:22px;height:1px;
  background:var(--c-border);
}
.flow-step{position:relative;padding-top:0;}
.flow-num{
  width:44px;height:44px;border-radius:50%;
  background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;position:relative;z-index:1;
  border:4px solid var(--c-bg);
}
.flow-step h3{margin-top:20px;font-size:18px;font-weight:600;line-height:1.6;}
.flow-step p{margin-top:10px;font-size:14.5px;line-height:1.85;color:var(--c-text-2);}
.flow-lines{margin-top:12px;display:flex;flex-direction:column;gap:8px;}
.flow-lines li{font-size:14px;line-height:1.75;color:var(--c-text-3);}

/* ===== 最新信息（CMS 列表） ===== */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.news-head h2{font-size:30px;font-weight:700;line-height:1.47;}
.news-head p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--c-text-2);max-width:620px;}
.news-all{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-teal);}
.news-all svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease;}
.news-all:hover svg{transform:translateX(3px);}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-s);}
.news-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-s);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.news-date{font-size:13px;color:var(--c-text-3);}
.news-title{font-size:16px;font-weight:600;line-height:1.65;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-title a:hover{color:var(--c-primary);}
.news-summary{font-size:14px;line-height:1.85;color:var(--c-text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-more{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--c-primary);margin-top:auto;}
.news-more svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease;}
.news-card:hover .news-more svg{transform:translateX(3px);}
.empty-state{
  border:1px dashed var(--c-border);border-radius:var(--r-lg);
  padding:48px;text-align:center;background:var(--c-surface);
  display:flex;flex-direction:column;align-items:center;gap:16px;
}
.empty-state svg{width:40px;height:40px;stroke:var(--c-text-3);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.empty-state p{font-size:14px;color:var(--c-text-2);}

/* ===== FAQ ===== */
.faq-list{max-width:840px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item[open]{border-color:var(--c-primary-s);box-shadow:var(--sh-1);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary);}
.faq-item[open] summary{color:var(--c-primary);}
.faq-toggle{
  width:24px;height:24px;border-radius:50%;background:var(--c-primary-s);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
  font-size:16px;line-height:1;font-weight:600;
  transition:transform .18s ease;
}
.faq-item[open] .faq-toggle{transform:rotate(135deg);}
.faq-answer{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--c-text-2);}

/* ===== 联系 / 转化 ===== */
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:24px;align-items:start;}
.info-card{
  background:var(--c-ink-800);color:var(--c-on-dark);border:1px solid var(--c-border-d);
  border-radius:var(--r-lg);padding:32px;
}
.info-card h2{font-size:22px;font-weight:700;line-height:1.5;color:#fff;}
.info-card>p{margin-top:12px;font-size:14.5px;line-height:1.85;color:var(--c-on-dark-2);}
.info-list{margin-top:26px;display:flex;flex-direction:column;gap:18px;}
.info-list li{display:flex;gap:12px;align-items:flex-start;}
.info-list svg{width:18px;height:18px;stroke:var(--c-on-dark-2);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto;margin-top:5px;}
.info-list strong{display:block;font-size:14px;font-weight:600;color:var(--c-on-dark);line-height:1.6;}
.info-list span{display:block;font-size:14px;color:var(--c-on-dark-2);line-height:1.75;}
.form-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-1);}
.form-card h3{font-size:20px;font-weight:600;line-height:1.5;}
.form-card>p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--c-text-2);}
.form-grid{margin-top:24px;display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1/-1;}
.field label{font-size:14px;font-weight:600;line-height:1.6;}
.field input,.field select,.field textarea{
  height:46px;border:1px solid var(--c-border);border-radius:var(--r-sm);
  padding:0 14px;background:var(--c-surface);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;min-height:110px;padding:12px 14px;resize:vertical;line-height:1.8;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--c-primary);box-shadow:var(--sh-focus);outline:none;
}
.field .hint{font-size:13px;color:var(--c-text-3);line-height:1.6;}
.field.has-error input,.field.has-error select{border-color:var(--c-danger);}
.field .error-text{font-size:13px;color:var(--c-danger);line-height:1.6;display:none;}
.field.has-error .error-text{display:block;}
.form-foot{margin-top:24px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.form-note{font-size:13px;color:var(--c-text-3);line-height:1.7;}
.form-success{
  display:none;margin-top:20px;padding:12px 16px;border-radius:var(--r-sm);
  background:var(--c-teal-s);color:var(--c-teal);font-size:14px;font-weight:600;
}
.form-success.show{display:block;}

/* ===== 页尾转化带 ===== */
.cta-band{background:var(--c-ink-800);border-top:1px solid var(--c-border-d);padding:64px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:26px;font-weight:700;line-height:1.5;color:#fff;}
.cta-inner p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--c-on-dark-2);max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ===== 页脚 ===== */
.site-footer{background:var(--c-ink-900);color:var(--c-on-dark);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--c-primary);}
.footer-brand span{font-size:16px;font-weight:700;color:#fff;}
.footer-about{font-size:14px;line-height:1.85;color:var(--c-on-dark-2);max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--c-on-dark);margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a,.footer-col li span{font-size:14px;color:var(--c-on-dark-2);transition:color .18s ease,transform .18s ease;display:inline-block;}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--c-border-d);
  padding:24px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--c-on-dark-2);line-height:1.7;}
.footer-bottom .icp{font-size:13px;color:var(--c-on-dark-2);}

/* ===== 图片占位 ===== */
.img-ph{background-color:var(--c-primary-s);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40' viewBox='0 0 40 40'%3E%3Ccircle cx='20' cy='20' r='3' fill='%233A2F86' fill-opacity='0.35'/%3E%3Ccircle cx='8' cy='11' r='1.5' fill='%233A2F86' fill-opacity='0.25'/%3E%3Ccircle cx='32' cy='29' r='1.5' fill='%233A2F86' fill-opacity='0.25'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:center;background-size:56px 56px;}

/* ===== 分隔线 ===== */
.rule{height:1px;background:var(--c-border);border:0;margin:0;}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .hero h1{font-size:36px;}
  .hero-grid{gap:40px;}
  .svc-wrap{grid-template-columns:280px 1fr;gap:40px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}
@media (max-width:991px){
  .nav-toggle{display:flex;}
  .nav-actions{display:none;}
  .nav-links{
    display:none;position:absolute;left:0;right:0;top:calc(100% + 10px);
    background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
    box-shadow:var(--sh-2);padding:16px;
    grid-template-columns:1fr 1fr;gap:10px;
  }
  .nav-links.is-open{display:grid;}
  .nav-item{
    border:1px solid var(--c-border);border-radius:var(--r-sm);
    padding:12px;font-size:14px;justify-content:flex-start;
  }
  .nav-item.is-active{border-color:var(--c-primary-s);border-bottom-width:1px;}
  .nav-cta-mobile{display:flex;grid-column:1/-1;margin-top:4px;}
  .nav-cta-mobile .btn{width:100%;}
  .section{padding:64px 0;}
  .hero{padding:44px 0 32px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-figure{aspect-ratio:16/10;}
  .entry-grid{grid-template-columns:1fr 1fr;}
  .svc-wrap{grid-template-columns:1fr;gap:32px;}
  .svc-head{position:static;}
  .svc-col.offset{padding-top:0;}
  .stats-grid{grid-template-columns:1fr 1fr;}
  .case-grid{grid-template-columns:1fr;}
  .flow-grid{grid-template-columns:1fr;gap:32px;}
  .flow-grid::before{display:none;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .hero h1{font-size:28px;}
  .section-head h2,.svc-head h2,.news-head h2,.stats-band h2{font-size:23px;}
  .svc-grid{grid-template-columns:1fr;}
  .stats-grid{grid-template-columns:1fr;}
  .stat-num{font-size:36px;}
  .news-grid{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;}
  .form-card,.info-card{padding:24px;}
  .brand-text{font-size:15px;}
}
@media (max-width:479px){
  .container{padding:0 16px;}
  .nav-shell{padding:10px 16px 0;}
  .nav-card{padding:0 14px;min-height:64px;}
  .entry-grid{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .hero-trust{gap:14px;}
  .nav-links{grid-template-columns:1fr;}
}

/* roulang page: article */
:root{
  --c-ink-900:#14102B;
  --c-ink-800:#1E1840;
  --c-primary:#3A2F86;
  --c-primary-d:#2C2470;
  --c-primary-s:#EDEAF9;
  --c-teal:#1FA394;
  --c-teal-s:#E4F5F2;
  --c-gold:#E0A63C;
  --c-bg:#F8F7F4;
  --c-surface:#FFFFFF;
  --c-border:#E7E4DE;
  --c-border-d:#2E2750;
  --c-text:#1B1730;
  --c-text-2:#5B5670;
  --c-text-3:#8E8AA0;
  --c-on-dark:#ECEAF6;
  --c-on-dark-2:#A9A4C4;
  --c-danger:#C0392B;
  --sh-1:0 1px 2px rgba(20,16,43,.04);
  --sh-2:0 10px 28px -12px rgba(58,47,134,.22);
  --sh-focus:0 0 0 3px rgba(58,47,134,.22);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --s-1:8px;--s-2:12px;--s-3:16px;--s-4:24px;--s-5:32px;--s-6:48px;--s-7:64px;--s-8:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:'Inter','PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-teal);text-decoration:none}
a:hover{color:var(--c-primary)}
button{font:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:700;line-height:1.35}
p{margin:0 0 1em}
::selection{background:var(--c-primary-s);color:var(--c-primary-d)}

.container{max-width:1200px;margin:0 auto;padding:0 var(--s-4)}
.section{padding:var(--s-8) 0}
.section-tight{padding:var(--s-7) 0}

/* ============ 顶部导航（全站统一） ============ */
.site-header{position:sticky;top:0;z-index:60;padding:12px 0;background:var(--c-bg)}
.nav-shell{max-width:1200px;margin:0 auto;padding:0 var(--s-4)}
.nav-card{
  position:relative;display:flex;align-items:center;gap:var(--s-3);
  height:72px;padding:0 20px;background:var(--c-surface);
  border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--sh-1);
  transition:box-shadow .18s ease,border-color .18s ease;
}
.site-header.is-scrolled .nav-card{box-shadow:var(--sh-2);border-color:#DEDAE9}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--c-primary);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px}
.brand-text{font-size:17px;font-weight:700;color:var(--c-text);letter-spacing:.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav-item{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  padding:8px 12px;border-radius:var(--r-sm);font-size:14px;color:var(--c-text-2);
  text-decoration:none;white-space:nowrap;transition:background-color .18s ease,color .18s ease;
}
.nav-item svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.nav-item:hover{background:var(--c-primary-s);color:var(--c-primary)}
.nav-item.is-active{background:var(--c-primary-s);color:var(--c-primary);font-weight:600}
.nav-item.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--c-primary)}
.nav-actions{display:flex;align-items:center;gap:var(--s-2);flex:0 0 auto;margin-left:var(--s-3)}
.nav-ghost{font-size:14px;color:var(--c-text-2);text-decoration:none;padding:6px 4px}
.nav-ghost:hover{color:var(--c-primary)}
.nav-cta-mobile{display:none}
.nav-toggle{
  display:none;width:44px;height:40px;margin-left:auto;border:1px solid var(--c-border);
  border-radius:var(--r-sm);background:var(--c-surface);cursor:pointer;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;margin-left:-9px;
  background:var(--c-primary);border-radius:2px;transition:transform .18s ease,opacity .18s ease;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px;margin-left:0;left:0}
.nav-toggle span{left:0;margin-left:0}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-sm);font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px)}
.btn-accent{background:var(--c-gold);color:var(--c-ink-900)}
.btn-accent:hover{background:#D3982F;color:var(--c-ink-900);transform:translateY(-1px)}
.btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-s);color:var(--c-primary-d)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn:focus-visible{outline:none;box-shadow:var(--sh-focus)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn.is-loading{pointer-events:none;position:relative;color:transparent}
.btn.is-loading::before{
  content:"";width:16px;height:16px;border-radius:50%;border:2px solid rgba(255,255,255,.4);
  border-top-color:#fff;animation:spin .7s linear infinite;position:absolute;left:50%;top:50%;margin:-8px 0 0 -8px;
}
@keyframes spin{to{transform:rotate(360deg)}}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-teal)}
.link-arrow svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease}
.link-arrow:hover{color:var(--c-primary)}
.link-arrow:hover svg{transform:translateX(3px)}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  padding:4px 10px;border-radius:999px;background:var(--c-primary-s);color:var(--c-primary);
}
.badge-teal{background:var(--c-teal-s);color:var(--c-teal)}

/* ============ 面包屑 ============ */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-text-3);padding:var(--s-5) 0 0}
.breadcrumb a{color:var(--c-text-3);text-decoration:none}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:#C9C5D6}
.breadcrumb .current{color:var(--c-text);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头 ============ */
.article-head{padding:var(--s-2) 0 var(--s-4)}
.article-head h1{font-size:40px;line-height:1.32;letter-spacing:.01em;margin:var(--s-3) 0 var(--s-4);max-width:22ch}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  font-size:14px;color:var(--c-text-3);padding-bottom:var(--s-4);border-bottom:1px solid var(--c-border);
}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* ============ 布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,800px) 320px;justify-content:center;
  gap:var(--s-6);align-items:start;padding-bottom:var(--s-8);
}
.article-body{padding-top:var(--s-5)}

/* ============ 正文排版 ============ */
.prose{font-size:16px;line-height:1.9;color:var(--c-text)}
.prose p{margin:0 0 1em}
.prose h2{
  position:relative;font-size:23px;font-weight:700;line-height:1.45;
  margin:36px 0 14px;padding-left:14px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;border-radius:2px;background:var(--c-primary);
}
.prose h3{font-size:18px;font-weight:600;line-height:1.5;margin:24px 0 10px}
.prose h4{font-size:16px;font-weight:600;margin:20px 0 8px}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:0;list-style:none}
.prose li{position:relative;padding-left:18px;margin-bottom:8px}
.prose li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--c-teal);opacity:.85;
}
.prose ol{counter-reset:li}
.prose ol li{counter-increment:li;padding-left:26px}
.prose ol li::before{
  content:counter(li);width:18px;height:18px;border-radius:6px;background:var(--c-primary-s);
  color:var(--c-primary);font-size:12px;font-weight:700;line-height:18px;text-align:center;top:.5em;
}
.prose blockquote{
  margin:var(--s-4) 0;padding:16px 20px;background:var(--c-teal-s);
  border-left:3px solid var(--c-teal);border-radius:0 var(--r-md) var(--r-md) 0;color:#1B4C48;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:var(--r-md);margin:var(--s-4) 0 var(--s-1);width:100%}
.prose figcaption,.prose .caption{text-align:center;font-size:13px;color:var(--c-text-3);margin-bottom:var(--s-4)}
.prose code{
  background:var(--c-primary-s);color:var(--c-primary-d);padding:2px 6px;border-radius:6px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;
}
.prose pre{
  background:var(--c-ink-900);color:var(--c-on-dark);padding:16px 20px;border-radius:var(--r-md);
  overflow-x:auto;margin:var(--s-4) 0;line-height:1.7;
}
.prose pre code{background:none;color:inherit;padding:0}
.prose table{
  display:block;width:max-content;min-width:100%;overflow-x:auto;border-collapse:collapse;
  margin:var(--s-4) 0;font-size:15px;
}
.prose th,.prose td{padding:11px 16px;border:1px solid var(--c-border);text-align:left;white-space:nowrap}
.prose th{background:var(--c-primary-s);color:var(--c-primary-d);font-weight:600}
.prose a{text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:var(--c-primary)}

/* ============ 侧栏 ============ */
.article-aside{padding-top:var(--s-5);position:sticky;top:108px}
.aside-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:var(--s-4);box-shadow:var(--sh-1);margin-bottom:var(--s-3);
}
.aside-card h3{font-size:16px;font-weight:600;margin-bottom:var(--s-3);display:flex;align-items:center;gap:8px}
.aside-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--c-primary)}
.aside-list{list-style:none}
.aside-list li{margin-bottom:12px;padding-bottom:12px;border-bottom:1px dashed var(--c-border)}
.aside-list li:last-child{margin-bottom:0;padding-bottom:0;border-bottom:0}
.aside-list a{font-size:15px;color:var(--c-text);font-weight:600;line-height:1.6;text-decoration:none;display:block}
.aside-list a:hover{color:var(--c-primary)}
.aside-list .t{display:block;font-size:13px;color:var(--c-text-3);margin-top:4px;font-weight:400}
.aside-contact{background:var(--c-primary-s);border-color:#DCD6F3}
.aside-contact p{font-size:14px;color:var(--c-text-2);margin-bottom:var(--s-3);line-height:1.75}

/* ============ 文末模块 ============ */
.article-foot{border-top:1px solid var(--c-border);padding-top:var(--s-5);margin-top:var(--s-6)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:var(--s-5)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--s-3);margin-bottom:var(--s-5)}
.rel-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);
  padding:20px;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  display:flex;flex-direction:column;gap:10px;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#DCD6F3}
.rel-card .meta{font-size:13px;color:var(--c-text-3)}
.rel-card h4{font-size:16px;font-weight:600;line-height:1.6}
.rel-card h4 a{color:var(--c-text);text-decoration:none}
.rel-card h4 a:hover{color:var(--c-primary)}
.foot-actions{display:flex;justify-content:center;padding:var(--s-2) 0 0}

/* ============ 空态 ============ */
.empty-state{
  border:1px dashed var(--c-border);border-radius:var(--r-lg);background:var(--c-surface);
  padding:var(--s-6) var(--s-4);text-align:center;max-width:560px;margin:var(--s-6) auto;
}
.empty-state svg{width:40px;height:40px;margin:0 auto var(--s-3);display:block;fill:none;stroke:var(--c-text-3);stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
.empty-state p{font-size:15px;color:var(--c-text-2);margin-bottom:var(--s-4)}

/* ============ CTA 深色带 ============ */
.cta-band{background:var(--c-ink-800);border-top:1px solid var(--c-border-d);padding:var(--s-8) 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--s-5);flex-wrap:wrap}
.cta-band h2{color:var(--c-on-dark);font-size:30px;margin-bottom:12px}
.cta-band p{color:var(--c-on-dark-2);font-size:15px;margin:0;max-width:56ch}
.cta-band .btn-outline{border-color:var(--c-on-dark-2);color:var(--c-on-dark)}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.08);color:#fff}
.cta-actions{display:flex;gap:var(--s-2);flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink-900);color:var(--c-on-dark-2);padding:var(--s-7) 0 var(--s-4)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:var(--s-5)}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;margin-bottom:var(--s-3)}
.footer-brand .brand-mark{width:32px;height:32px}
.footer-about{font-size:14px;line-height:1.85;color:var(--c-on-dark-2);margin:0;max-width:42ch}
.footer-col h4{font-size:14px;font-weight:600;color:var(--c-on-dark);margin-bottom:var(--s-3)}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--c-on-dark-2);text-decoration:none;transition:color .18s ease,transform .18s ease;display:inline-block}
.footer-col a:hover{color:#fff;transform:translateX(-2px)}
.footer-bottom{
  margin-top:var(--s-6);padding-top:var(--s-4);border-top:1px solid var(--c-border-d);
  display:flex;justify-content:space-between;gap:var(--s-3);flex-wrap:wrap;font-size:13px;color:#7F7A9C;
}
.footer-bottom p{margin:0}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,800px);gap:0}
  .article-aside{display:none}
  .related-wrap{display:block}
  .article-head h1{font-size:34px}
}
@media (max-width:991px){
  .section{padding:var(--s-7) 0}
  .cta-band{padding:var(--s-7) 0}
  .nav-toggle{display:block}
  .nav-links{
    position:absolute;left:0;right:0;top:calc(100% + 10px);
    display:none;grid-template-columns:1fr 1fr;gap:8px;
    background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
    padding:var(--s-3);box-shadow:var(--sh-2);margin-left:0;
  }
  .nav-links.is-open{display:grid}
  .nav-item{width:100%;padding:10px 12px;background:var(--c-bg)}
  .nav-cta-mobile{display:block;grid-column:1 / -1}
  .nav-cta-mobile .btn{width:100%}
  .nav-actions{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--s-4)}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .nav-shell{padding:0 20px}
  .nav-card{height:64px;padding:0 var(--s-3)}
  .article-head h1{font-size:28px;line-height:1.4}
  .prose h2{font-size:21px;margin-top:32px}
  .prose h3{font-size:17px}
  .article-layout{padding-bottom:var(--s-7)}
  .related-grid{grid-template-columns:1fr}
  .cta-band h2{font-size:23px}
  .footer-grid{grid-template-columns:1fr;gap:var(--s-4)}
  .footer-bottom{flex-direction:column;gap:8px}
  .article-meta{gap:12px}
}
@media (max-width:479px){
  .container{padding:0 16px}
  .nav-shell{padding:0 16px}
  .brand-text{font-size:15px}
  .article-head h1{font-size:25px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
}

/* roulang page: category1 */
:root{
  --c-ink-900:#14102B;
  --c-ink-800:#1E1840;
  --c-primary:#3A2F86;
  --c-primary-d:#2C2470;
  --c-primary-s:#EDEAF9;
  --c-teal:#1FA394;
  --c-teal-s:#E4F5F2;
  --c-gold:#E0A63C;
  --c-bg:#F8F7F4;
  --c-surface:#FFFFFF;
  --c-border:#E7E4DE;
  --c-border-d:#2E2750;
  --c-text:#1B1730;
  --c-text-2:#5B5670;
  --c-text-3:#8E8AA0;
  --c-on-dark:#ECEAF6;
  --c-on-dark-2:#A9A4C4;
  --c-danger:#C0392B;
  --c-success:#1FA394;
  --sh-1:0 1px 2px rgba(20,16,43,.04);
  --sh-2:0 10px 28px -12px rgba(58,47,134,.22);
  --sh-focus:0 0 0 3px rgba(58,47,134,.22);
  --r-xl:20px;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --sp-1:8px;
  --sp-2:12px;
  --sp-3:16px;
  --sp-4:24px;
  --sp-5:32px;
  --sp-6:48px;
  --sp-7:64px;
  --sp-8:88px;
  --font-base:'Inter','PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:110px;}
body{
  margin:0;
  font-family:var(--font-base);
  font-size:16px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  font-feature-settings:"tnum" 1;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-teal);text-decoration:none;text-underline-offset:3px;transition:color .18s ease;}
a:hover{color:var(--c-primary);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em;color:var(--c-text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:var(--sh-focus);border-radius:8px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sp-8) 0;}
.section-tint{background:var(--c-surface);}
.section-head{max-width:760px;margin-bottom:var(--sp-6);}
.section-head h2{font-size:30px;line-height:1.45;margin-bottom:12px;}
.section-head p{color:var(--c-text-2);font-size:16px;line-height:1.9;}
.stars{position:absolute;pointer-events:none;opacity:.12;fill:var(--c-primary);stroke:var(--c-primary);}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:90;padding:12px 0;}
.nav-shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.nav-card{
  position:relative;
  display:flex;
  align-items:center;
  gap:18px;
  height:72px;
  padding:0 20px;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  transition:box-shadow .18s ease,border-color .18s ease;
}
.site-header.is-stuck .nav-card{box-shadow:var(--sh-2);border-color:#DEDAD2;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;color:var(--c-text);}
.brand:hover{color:var(--c-text);}
.brand-mark{width:34px;height:34px;border-radius:var(--r-sm);background:var(--c-primary);display:grid;place-items:center;flex:0 0 auto;}
.brand-mark svg{width:20px;height:20px;display:block;}
.brand-text{font-size:16px;font-weight:700;white-space:nowrap;letter-spacing:.01em;}
.nav-links{display:flex;align-items:center;justify-content:center;gap:4px;flex:1 1 auto;}
.nav-item{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 12px;
  border-radius:var(--r-sm);
  font-size:14px;
  font-weight:500;
  color:var(--c-text-2);
  text-decoration:none;
  white-space:nowrap;
  transition:background .18s ease,color .18s ease;
}
.nav-item svg{width:20px;height:20px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.nav-item:hover{background:var(--c-primary-s);color:var(--c-primary);}
.nav-item.is-active{background:var(--c-primary-s);color:var(--c-primary);}
.nav-item.is-active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  transform:translateX(-50%);
  width:18px;
  height:2px;
  border-radius:999px;
  background:var(--c-primary);
}
.nav-cta-mobile{display:none;}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-ghost{font-size:14px;font-weight:500;color:var(--c-text-2);text-decoration:none;padding:8px 10px;border-radius:var(--r-sm);transition:color .18s ease,background .18s ease;}
.nav-ghost:hover{color:var(--c-primary);background:var(--c-primary-s);}
.nav-toggle{
  display:none;
  position:relative;
  width:40px;height:40px;
  flex:0 0 auto;
  border:1px solid var(--c-border);
  border-radius:var(--r-sm);
  background:var(--c-surface);
  cursor:pointer;
  transition:border-color .18s ease,background .18s ease;
}
.nav-toggle:hover{border-color:var(--c-primary-s);background:var(--c-primary-s);}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;
  left:50%;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--c-text);
  transition:transform .18s ease,opacity .18s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;transform:translateX(-50%);}
.nav-toggle span::before,.nav-toggle span::after{content:"";left:0;}
.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;
  padding:13px 26px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  text-decoration:none;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn:active{transform:translateY(0);}
.btn:focus-visible{outline:none;box-shadow:var(--sh-focus);}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);}
.btn-accent{background:var(--c-gold);color:var(--c-ink-900);}
.btn-accent:hover{background:#D69A2F;color:var(--c-ink-900);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-outline{background:transparent;border-color:var(--c-border);color:var(--c-text);}
.btn-outline:hover{background:var(--c-primary-s);border-color:var(--c-primary-s);color:var(--c-primary);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}

/* ---------- 徽章 / 链接 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:999px;
  font-size:12px;
  font-weight:500;
  background:var(--c-primary-s);
  color:var(--c-primary);
  white-space:nowrap;
}
.badge-teal{background:var(--c-teal-s);color:var(--c-teal);}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:var(--sp-4);}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--c-teal);
  text-decoration:none;
  transition:color .18s ease;
}
.link-more::after{
  content:"";
  width:6px;height:6px;
  border-right:1.6px solid currentColor;
  border-bottom:1.6px solid currentColor;
  transform:rotate(-45deg);
  transition:transform .18s ease;
}
.link-more:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.link-more:hover::after{transform:rotate(-45deg) translate(2px,2px);}

/* ---------- 页头 ---------- */
.page-head{position:relative;overflow:hidden;padding:36px 0 64px;}
.page-head .stars-a{top:-20px;right:-30px;width:300px;height:200px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:14px;color:var(--c-text-3);margin-bottom:14px;}
.breadcrumb a{color:var(--c-text-3);text-decoration:none;}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#C6C2BB;}
.breadcrumb .current{color:var(--c-text);}
.page-head-grid{display:grid;grid-template-columns:minmax(0,1fr) 400px;gap:var(--sp-6);align-items:center;}
.page-head h1{font-size:40px;line-height:1.3;margin:16px 0 0;letter-spacing:.01em;}
.page-head .lede{margin-top:16px;font-size:17px;line-height:1.85;color:var(--c-text-2);max-width:620px;}
.page-head-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-xl);border:1px solid var(--c-border);box-shadow:var(--sh-1);}

/* ---------- 分栏主体 ---------- */
.split{display:grid;grid-template-columns:280px minmax(0,1fr);gap:var(--sp-6);align-items:start;}
.aside-sticky{position:sticky;top:108px;}
.aside-title{font-size:18px;font-weight:600;margin-bottom:16px;}
.toc{display:grid;gap:2px;margin-bottom:var(--sp-4);}
.toc a{
  display:flex;
  gap:10px;
  align-items:flex-start;
  padding:8px 10px;
  border-radius:8px;
  font-size:14px;
  line-height:1.7;
  color:var(--c-text-2);
  text-decoration:none;
  transition:background .18s ease,color .18s ease;
}
.toc a::before{
  content:"";
  width:6px;height:6px;
  margin-top:9px;
  flex:0 0 auto;
  border-radius:50%;
  background:var(--c-teal);
}
.toc a:hover{background:var(--c-primary-s);color:var(--c-primary);}
.aside-card{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  padding:20px;
  box-shadow:var(--sh-1);
}
.aside-card h3{font-size:15px;font-weight:600;margin-bottom:10px;}
.aside-card p{font-size:14px;line-height:1.8;color:var(--c-text-2);margin-bottom:14px;}
.mini-list{display:grid;gap:10px;}
.mini-list li{display:flex;gap:8px;font-size:14px;color:var(--c-text-2);}
.mini-list li span{color:var(--c-text-3);flex:0 0 auto;}
.mini-list a{color:var(--c-teal);text-decoration:none;word-break:break-all;}
.mini-list a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}

.list-head{margin-bottom:var(--sp-4);}
.list-head h2{font-size:30px;line-height:1.45;margin-bottom:12px;}
.list-head p{color:var(--c-text-2);font-size:16px;line-height:1.9;}
.entry-list{display:grid;gap:16px;}
.entry{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-left:3px solid var(--c-primary);
  border-radius:var(--r-md);
  padding:22px 24px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.entry:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.entry-title{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:10px;}
.entry-title a{color:var(--c-text);text-decoration:none;}
.entry-title a:hover{color:var(--c-primary);}
.entry-desc{font-size:15px;line-height:1.85;color:var(--c-text-2);margin-bottom:14px;}
.entry-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;}
.entry-meta{font-size:13px;color:var(--c-text-3);}

/* ---------- FAQ ---------- */
.faq{max-width:840px;display:grid;gap:12px;}
.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item[open]{border-color:var(--c-primary-s);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--c-text);
  cursor:pointer;
  list-style:none;
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  font-size:20px;
  line-height:1;
  color:var(--c-text-3);
  transition:color .18s ease,transform .18s ease;
  flex:0 0 auto;
}
.faq-item[open] summary{color:var(--c-primary);}
.faq-item[open] summary::after{content:"−";color:var(--c-primary);transform:rotate(180deg);}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--c-text-2);}

/* ---------- 相关分类 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--sp-4);}
.rel-card{
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:var(--sp-4);
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  text-decoration:none;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-s);}
.rel-icon{width:44px;height:44px;border-radius:var(--r-md);background:var(--c-primary-s);display:grid;place-items:center;}
.rel-icon svg{width:22px;height:22px;fill:none;stroke:var(--c-primary);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.rel-card h3{font-size:18px;font-weight:600;color:var(--c-text);line-height:1.5;}
.rel-card p{font-size:14px;line-height:1.8;color:var(--c-text-2);}

/* ---------- 联系与表单 ---------- */
.contact-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:var(--sp-5);align-items:start;}
.contact-info,.form-card{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--sh-1);
}
.contact-info h3,.form-card h3{font-size:20px;font-weight:600;margin-bottom:14px;}
.contact-info > p{font-size:15px;line-height:1.9;color:var(--c-text-2);margin-bottom:20px;}
.info-list{display:grid;gap:16px;}
.info-list li{display:flex;gap:12px;font-size:15px;line-height:1.8;color:var(--c-text-2);}
.info-list .dot{width:8px;height:8px;margin-top:10px;flex:0 0 auto;border-radius:50%;background:var(--c-teal);}
.info-list strong{display:block;font-size:15px;font-weight:600;color:var(--c-text);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--c-text);}
.field input,.field select,.field textarea{
  width:100%;
  height:46px;
  padding:0 14px;
  border:1px solid var(--c-border);
  border-radius:var(--r-sm);
  background:var(--c-surface);
  color:var(--c-text);
  font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:var(--sh-focus);}
.field input::placeholder,.field textarea::placeholder{color:var(--c-text-3);}
.field.has-error input,.field.has-error textarea,.field.has-error select{border-color:var(--c-danger);}
.field .field-error{display:none;margin-top:6px;font-size:13px;color:var(--c-danger);}
.field.has-error .field-error{display:block;}
.form-tip{
  display:none;
  margin-bottom:18px;
  padding:12px 16px;
  border-radius:var(--r-sm);
  background:var(--c-teal-s);
  color:#14695F;
  font-size:14px;
  line-height:1.7;
}
.form-tip.is-show{display:block;}

/* ---------- 转化带 ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--c-ink-800);color:var(--c-on-dark);padding:var(--sp-7) 0;}
.cta-band .stars-b{right:-20px;bottom:-40px;width:260px;height:180px;opacity:.1;fill:#8E86D8;stroke:#8E86D8;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-5);position:relative;}
.cta-inner h2{color:#fff;font-size:28px;line-height:1.45;margin-bottom:10px;}
.cta-inner p{color:var(--c-on-dark-2);font-size:16px;line-height:1.85;max-width:620px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink-900);color:var(--c-on-dark);padding:var(--sp-7) 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:var(--sp-6);}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-about{font-size:14px;line-height:1.85;color:var(--c-on-dark-2);max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--c-on-dark);margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a,.footer-col span{display:inline-block;font-size:14px;color:var(--c-on-dark-2);text-decoration:none;transition:color .18s ease,transform .18s ease;}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  border-top:1px solid var(--c-border-d);
  padding:20px 0;
  font-size:13px;
  color:var(--c-on-dark-2);
}
.footer-bottom .icp{color:#7D78A0;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .split{grid-template-columns:240px minmax(0,1fr);gap:var(--sp-5);}
  .page-head h1{font-size:36px;}
}
@media (max-width:991px){
  .nav-toggle{display:block;margin-left:auto;}
  .nav-links{
    display:none;
    position:absolute;
    top:calc(100% + 10px);
    left:0;
    right:0;
    padding:14px;
    background:var(--c-surface);
    border:1px solid var(--c-border);
    border-radius:var(--r-lg);
    box-shadow:var(--sh-2);
  }
  .nav-links.is-open{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
  .nav-item{
    justify-content:flex-start;
    padding:12px;
    border:1px solid var(--c-border);
    border-radius:var(--r-sm);
    background:var(--c-surface);
  }
  .nav-item.is-active::after{display:none;}
  .nav-cta-mobile{display:block;grid-column:1 / -1;}
  .nav-cta-mobile .btn{width:100%;}
  .nav-actions .nav-ghost{display:none;}
  .page-head{padding:24px 0 48px;}
  .page-head-grid{grid-template-columns:1fr;gap:var(--sp-5);}
  .page-head h1{font-size:30px;}
  .page-head .lede{font-size:16px;}
  .split{grid-template-columns:1fr;gap:var(--sp-5);}
  .aside-sticky{position:static;}
  .section{padding:64px 0;}
  .section-head h2,.list-head h2{font-size:24px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .contact-grid{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-about{max-width:none;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .nav-shell{padding:0 20px;}
  .nav-links.is-open{grid-template-columns:1fr;}
  .nav-cta-mobile{grid-column:auto;}
  .brand-text{font-size:15px;}
  .page-head h1{font-size:28px;}
  .page-head .lede{font-size:15px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:var(--sp-5);}
  .related-grid{grid-template-columns:1fr;}
  .entry{padding:20px;}
  .entry-title{font-size:17px;}
  .contact-info,.form-card{padding:22px;}
  .cta-band{padding:var(--sp-6) 0;}
  .cta-inner h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{flex-wrap:wrap;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media (max-width:479px){
  .container{padding:0 16px;}
  .nav-shell{padding:0 16px;}
  .nav-card{padding:0 14px;gap:10px;}
  .brand-text{font-size:14px;}
  .page-head h1{font-size:24px;line-height:1.4;}
  .entry-title{font-size:16px;}
  .btn{padding:12px 20px;font-size:14px;}
  .footer-grid{grid-template-columns:1fr;}
}

/* roulang page: category2 */
:root{
  --c-ink-900:#14102B;
  --c-ink-800:#1E1840;
  --c-primary:#3A2F86;
  --c-primary-d:#2C2470;
  --c-primary-s:#EDEAF9;
  --c-teal:#1FA394;
  --c-teal-s:#E4F5F2;
  --c-gold:#E0A63C;
  --c-bg:#F8F7F4;
  --c-surface:#FFFFFF;
  --c-border:#E7E4DE;
  --c-border-d:#2E2750;
  --c-text:#1B1730;
  --c-text-2:#5B5670;
  --c-text-3:#8E8AA0;
  --c-on-dark:#ECEAF6;
  --c-on-dark-2:#A9A4C4;
  --c-danger:#C0392B;
  --c-success:#1FA394;
  --sh-1:0 1px 2px rgba(20,16,43,.04);
  --sh-2:0 10px 28px -12px rgba(58,47,134,.22);
  --sh-focus:0 0 0 3px rgba(58,47,134,.22);
  --r-lg:16px;
  --r-md:12px;
  --r-btn:10px;
  --r-pill:999px;
  --maxw:1200px;
  --ease:.18s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Inter','PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em;line-height:1.45}
p{margin:0}
:focus-visible{outline:none;box-shadow:var(--sh-focus);border-radius:8px}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background-color var(--ease),color var(--ease),transform var(--ease),border-color var(--ease),box-shadow var(--ease);
  text-align:center;
}
.btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--ease)}
.btn:hover svg{transform:translateX(3px)}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-d);transform:translateY(-1px)}
.btn-accent{background:var(--c-gold);color:var(--c-ink-900)}
.btn-accent:hover{background:#D2952C;transform:translateY(-1px)}
.btn-outline{background:transparent;border-color:var(--c-border);color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-s);border-color:var(--c-primary-s)}
.btn-dark-outline{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.btn-dark-outline:hover{background:rgba(255,255,255,.08)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none}
.btn.is-loading{pointer-events:none;opacity:.7}
.btn.is-loading::before{
  content:"";width:16px;height:16px;border-radius:50%;
  border:2px solid currentColor;border-top-color:transparent;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--c-teal);text-decoration:underline;text-underline-offset:3px;
  transition:color var(--ease);
}
.link-arrow svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--ease)}
.link-arrow:hover{color:var(--c-primary)}
.link-arrow:hover svg{transform:translateX(3px)}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:80;padding:12px 0 0}
.nav-shell{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.nav-card{
  position:relative;display:flex;align-items:center;gap:16px;
  height:72px;padding:0 20px;
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);transition:box-shadow var(--ease),border-color var(--ease);
}
.nav-card.is-stuck{box-shadow:var(--sh-2);border-color:#DFDBD3}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--c-primary);display:grid;place-items:center;flex:0 0 auto}
.brand-mark svg{width:18px;height:18px}
.brand-text{font-size:16px;font-weight:700;color:var(--c-text);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;flex:1 1 auto;justify-content:center}
.nav-item{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  padding:8px 12px;border-radius:var(--r-btn);
  font-size:14px;color:var(--c-text-2);white-space:nowrap;
  transition:background-color var(--ease),color var(--ease);
}
.nav-item svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.nav-item:hover{background:var(--c-primary-s);color:var(--c-primary)}
.nav-item.is-active{background:var(--c-primary-s);color:var(--c-primary);font-weight:600}
.nav-item.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--c-primary)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-ghost{font-size:14px;color:var(--c-text-2);transition:color var(--ease)}
.nav-ghost:hover{color:var(--c-primary)}
.nav-cta-mobile{display:none}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-btn);
  border:1px solid var(--c-border);background:var(--c-surface);cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;margin:0 auto;background:var(--c-text);position:relative;transition:background var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text);
  transition:transform var(--ease),top var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:800px;margin-bottom:40px}
.kicker{display:inline-block;font-size:13px;font-weight:600;color:var(--c-teal);letter-spacing:.06em;margin-bottom:12px}
.section-title{font-size:30px;line-height:44px}
.section-desc{margin-top:12px;color:var(--c-text-2);font-size:16px;max-width:760px}
.panel{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-1)}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.badge{display:inline-flex;align-items:center;font-size:12px;font-weight:600;padding:4px 10px;border-radius:var(--r-pill);background:var(--c-primary-s);color:var(--c-primary)}
.badge-teal{background:var(--c-teal-s);color:var(--c-teal)}

/* ============ 页头区 ============ */
.hero-cat{position:relative;padding:36px 0 0;overflow:hidden}
.star-deco{position:absolute;top:10px;right:-20px;width:280px;height:auto;opacity:.12;pointer-events:none}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--c-text-3);margin-bottom:12px}
.breadcrumb a{color:var(--c-text-3);transition:color var(--ease)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:#CFCAC2}
.breadcrumb .current{color:var(--c-text)}
.hero-title{font-size:40px;line-height:52px;max-width:880px}
.hero-lead{margin-top:14px;font-size:16px;line-height:1.9;color:var(--c-text-2);max-width:760px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-figure{
  margin-top:36px;border:1px solid var(--c-border);border-radius:20px;overflow:hidden;
  aspect-ratio:16/7;background:var(--c-primary-s);box-shadow:var(--sh-1);
}
.hero-figure img{width:100%;height:100%;object-fit:cover}

/* ============ 图文卡 ============ */
.card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--sh-1);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-s)}
.card-media{overflow:hidden;display:flex;flex-direction:column}
.thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-s);position:relative}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.card-media:hover .thumb img{transform:scale(1.03)}
.thumb.is-empty{display:grid;place-items:center}
.thumb.is-empty::after{content:"✦";font-size:28px;color:var(--c-primary);opacity:.45}
.card-body{padding:24px}
.card-body h3{font-size:21px;line-height:32px;margin-top:12px}
.card-body p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--c-text-2)}
.card-foot{margin-top:18px}

/* ============ 列表 ============ */
.list-col{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 40px}
.list-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--c-border)}
.list-item:last-child{border-bottom:0}
.list-item .bar{flex:0 0 3px;align-self:stretch;border-radius:3px;background:var(--c-primary)}
.list-item h4{font-size:15px;font-weight:600}
.list-item p{margin-top:4px;font-size:14px;line-height:1.8;color:var(--c-text-2)}

/* ============ 步骤卡 ============ */
.step-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.step{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-1);transition:transform var(--ease),box-shadow var(--ease)}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.step .num{width:34px;height:34px;border-radius:50%;background:var(--c-primary);color:#fff;display:grid;place-items:center;font-size:15px;font-weight:700;margin-bottom:16px}
.step h3{font-size:18px;line-height:28px}
.step p{margin-top:10px;font-size:14px;line-height:1.85;color:var(--c-text-2)}

/* ============ FAQ ============ */
.faq-list{max-width:840px}
.faq-item{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);box-shadow:var(--sh-1);margin-bottom:12px;overflow:hidden}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--c-text);transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:20px;line-height:1;color:var(--c-text-3);transition:color var(--ease),transform var(--ease)}
.faq-item summary:hover{color:var(--c-primary)}
.faq-item[open] summary{color:var(--c-primary)}
.faq-item[open] summary::after{content:"−";color:var(--c-primary);transform:rotate(180deg)}
.faq-body{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--c-text-2)}

/* ============ 相关分类 ============ */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.related-card{display:flex;flex-direction:column;padding:28px}
.related-card h3{font-size:18px;line-height:28px;margin-top:14px}
.related-card p{margin-top:10px;font-size:14px;line-height:1.85;color:var(--c-text-2);flex:1 1 auto}
.related-card .card-foot{margin-top:20px}

/* ============ 深色转化带 ============ */
.cta-wrap{padding:0 0 88px}
.band-dark{
  background:var(--c-ink-800);border:1px solid var(--c-border-d);border-radius:20px;
  padding:48px;color:var(--c-on-dark);
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.band-dark h2{font-size:30px;line-height:44px;color:#fff}
.band-dark .band-desc{margin-top:12px;font-size:15px;line-height:1.85;color:var(--c-on-dark-2);max-width:560px}
.band-points{display:flex;flex-wrap:wrap;gap:20px;margin-top:20px}
.band-points span{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--c-on-dark-2)}
.band-points span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-gold)}
.band-actions{display:flex;flex-direction:column;gap:12px}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink-900);color:var(--c-on-dark-2);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);border:1px solid var(--c-border-d)}
.footer-about{font-size:14px;line-height:1.8;color:var(--c-on-dark-2);max-width:340px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--c-on-dark);margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--c-on-dark-2);display:inline-block;transition:color var(--ease),transform var(--ease)}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero-title{font-size:34px;line-height:46px}
  .grid-3,.step-grid,.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .nav-item{padding:8px 10px;font-size:13px}
  .brand-text{font-size:15px}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .section-tight{padding:48px 0}
  .cta-wrap{padding-bottom:64px}
  .nav-toggle{display:block;margin-left:auto}
  .nav-links{
    display:none;position:absolute;top:calc(100% + 10px);left:0;right:0;
    background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
    box-shadow:var(--sh-2);padding:16px;gap:10px;
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .nav-links.is-open{display:grid}
  .nav-item{width:100%;padding:10px 12px;font-size:14px;border:1px solid var(--c-border);border-radius:var(--r-btn);justify-content:flex-start}
  .nav-item.is-active::after{display:none}
  .nav-cta-mobile{display:block;grid-column:1 / -1}
  .nav-cta-mobile .btn{width:100%}
  .nav-actions{display:none}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .band-dark{padding:36px;flex-direction:column;align-items:flex-start}
  .band-actions{width:100%;flex-direction:row;flex-wrap:wrap}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .nav-shell{padding:0 20px}
  .section{padding:56px 0}
  .section-tight{padding:40px 0}
  .section-title{font-size:23px;line-height:34px}
  .hero-title{font-size:28px;line-height:40px}
  .hero-figure{aspect-ratio:16/10;margin-top:28px}
  .grid-2,.grid-3,.step-grid,.related-grid,.list-col{grid-template-columns:1fr}
  .panel{padding:24px}
  .card-body h3{font-size:18px;line-height:28px}
  .band-dark{padding:28px}
  .band-dark h2{font-size:23px;line-height:34px}
  .brand-text{white-space:normal;line-height:1.3}
  .nav-card{height:auto;min-height:68px;padding:12px 16px}
}
@media (max-width:479px){
  .container{padding:0 16px}
  .nav-shell{padding:0 16px}
  .section{padding:48px 0}
  .hero-title{font-size:26px;line-height:36px}
  .btn{padding:12px 20px;font-size:14px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .band-actions .btn{width:100%}
}

/* roulang page: category3 */
:root{
  --c-ink-900:#14102B;
  --c-ink-800:#1E1840;
  --c-primary:#3A2F86;
  --c-primary-d:#2C2470;
  --c-primary-s:#EDEAF9;
  --c-teal:#1FA394;
  --c-teal-s:#E4F5F2;
  --c-gold:#E0A63C;
  --c-bg:#F8F7F4;
  --c-surface:#FFFFFF;
  --c-border:#E7E4DE;
  --c-border-d:#2E2750;
  --c-text:#1B1730;
  --c-text-2:#5B5670;
  --c-text-3:#8E8AA0;
  --c-on-dark:#ECEAF6;
  --c-on-dark-2:#A9A4C4;
  --c-danger:#C0392B;
  --c-success:#1FA394;

  --sh-1:0 1px 2px rgba(20,16,43,.04);
  --sh-2:0 10px 28px -12px rgba(58,47,134,.22);
  --sh-focus:0 0 0 3px rgba(58,47,134,.22);

  --r-xl:20px;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --r-pill:999px;

  --sp-1:8px;
  --sp-2:12px;
  --sp-3:16px;
  --sp-4:24px;
  --sp-5:32px;
  --sp-6:48px;
  --sp-7:64px;
  --sp-8:88px;

  --font-sans:'Inter','PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
  --ease:.18s ease;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--c-teal);text-decoration:none;text-underline-offset:3px;transition:color var(--ease);}
a:hover{color:var(--c-primary);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
p{max-width:800px;}
svg{display:block;}
:focus-visible{outline:none;box-shadow:var(--sh-focus);border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--dark{background:var(--c-ink-800);color:var(--c-on-dark);}

.h1{font-size:40px;line-height:1.3;font-weight:700;letter-spacing:.01em;}
.h2{font-size:30px;line-height:1.45;font-weight:700;letter-spacing:.01em;margin-top:56px;}
.h3{font-size:21px;line-height:1.5;font-weight:600;}
.lead{font-size:16px;color:var(--c-text-2);line-height:1.9;max-width:760px;}
.muted{color:var(--c-text-3);font-size:14px;line-height:1.7;}
.section-head{margin-bottom:40px;}
.section-head .h2{margin-top:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--c-primary);text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:14px;height:2px;background:var(--c-teal);display:block;}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  padding:12px 0;
}
.nav-shell{
  max-width:1200px;margin:0 auto;padding:0 12px;
}
.nav-card{
  position:relative;
  display:flex;align-items:center;gap:20px;
  min-height:72px;padding:0 20px;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  transition:box-shadow var(--ease),border-color var(--ease);
}
.site-header.is-stuck .nav-card{box-shadow:var(--sh-2);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--c-text);}
.brand:hover{color:var(--c-text);}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:var(--c-primary);
  display:grid;place-items:center;flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{font-size:16px;font-weight:600;letter-spacing:.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-item{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 12px;border-radius:var(--r-sm);
  font-size:14px;font-weight:500;color:var(--c-text-2);
  position:relative;white-space:nowrap;
  transition:background var(--ease),color var(--ease);
}
.nav-item svg{
  width:18px;height:18px;flex:0 0 auto;
  fill:none;stroke:currentColor;stroke-width:1.7;
  stroke-linecap:round;stroke-linejoin:round;
}
.nav-item:hover{background:var(--c-primary-s);color:var(--c-primary);}
.nav-item.is-active{background:var(--c-primary-s);color:var(--c-primary);font-weight:600;}
.nav-item.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-ghost{
  font-size:14px;font-weight:500;color:var(--c-text-2);
  padding:8px 4px;
}
.nav-ghost:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.nav-cta-mobile{display:none;}
.nav-toggle{
  display:none;width:42px;height:42px;flex:0 0 auto;
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-sm);cursor:pointer;position:relative;
  transition:border-color var(--ease),background var(--ease);
}
.nav-toggle:hover{border-color:var(--c-primary-s);background:var(--c-primary-s);}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:50%;width:18px;height:1.6px;
  background:var(--c-text);border-radius:2px;transform:translateX(-50%);
  transition:transform var(--ease),opacity var(--ease);
}
.nav-toggle span{top:50%;margin-top:-.8px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{transform:translateX(-50%) rotate(45deg);top:0;}
.nav-toggle.is-open span::after{transform:translateX(-50%) rotate(-45deg);top:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--ease),color var(--ease),transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{background:var(--c-gold);color:var(--c-ink-900);}
.btn-accent:hover{background:#d09730;color:var(--c-ink-900);transform:translateY(-1px);}
.btn-outline{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-s);color:var(--c-primary);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}
.btn.is-loading{pointer-events:none;opacity:.8;}
.btn.is-loading::before{
  content:"";width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.45);border-top-color:#fff;
  animation:spin .8s linear infinite;
}
.btn-outline.is-loading::before{border-color:rgba(58,47,134,.3);border-top-color:var(--c-primary);}
@keyframes spin{to{transform:rotate(360deg);}}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-teal);
  text-decoration:underline;text-underline-offset:3px;
}
.text-link:hover{color:var(--c-primary);}
.text-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--ease);}
.text-link:hover svg{transform:translateX(3px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1.6;
  background:var(--c-primary-s);color:var(--c-primary);
}
.badge--teal{background:var(--c-teal-s);color:var(--c-teal);}
.badge--gold{background:#FBF1DE;color:#9A6E12;}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:56px 0 72px;
  background:var(--c-bg);
  border-bottom:1px solid var(--c-border);
}
.star-deco{
  position:absolute;pointer-events:none;z-index:0;
}
.star-deco--hero{top:-20px;right:-40px;width:420px;height:260px;}
.star-deco--cta{bottom:-30px;left:-30px;width:360px;height:220px;}
.breadcrumb{
  position:relative;z-index:1;
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--c-text-3);margin-bottom:16px;
}
.breadcrumb a{color:var(--c-text-3);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:var(--c-border);}
.breadcrumb .current{color:var(--c-text);font-weight:500;}
.page-hero .h1{position:relative;z-index:1;max-width:860px;}
.page-hero .subtitle{
  position:relative;z-index:1;
  margin-top:16px;font-size:17px;color:var(--c-text-2);max-width:700px;
}
.page-hero .badge-row{position:relative;z-index:1;margin-top:24px;}
.page-hero .hero-actions{position:relative;z-index:1;margin-top:28px;display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 概览条 ---------- */
.overview{
  position:relative;z-index:1;
  margin-top:44px;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:24px;
}
.overview-head{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-bottom:20px;
}
.overview-head .h3{font-size:17px;}
.overview-track{
  display:grid;grid-template-columns:repeat(5,1fr);gap:12px;
}
.overview-node{
  position:relative;
  padding:14px 16px 14px 18px;
  border:1px solid var(--c-border);
  border-left:3px solid var(--c-primary);
  border-radius:var(--r-md);
  background:var(--c-bg);
}
.overview-node b{display:block;font-size:15px;font-weight:600;color:var(--c-text);}
.overview-node span{display:block;margin-top:4px;font-size:13px;color:var(--c-text-3);line-height:1.7;}
.overview-node i{
  display:block;font-style:normal;font-size:13px;font-weight:700;
  color:var(--c-primary);margin-bottom:6px;
}

/* ---------- 时间轴 ---------- */
.timeline{
  position:relative;max-width:940px;margin:0 auto;
  padding-left:0;
}
.timeline::before{
  content:"";position:absolute;left:19px;top:16px;bottom:16px;width:1px;
  background-image:repeating-linear-gradient(to bottom,var(--c-border) 0 4px,transparent 4px 10px);
}
.tl-item{
  position:relative;
  display:grid;grid-template-columns:40px 1fr;gap:24px;
  padding-bottom:28px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  width:40px;height:40px;border-radius:50%;
  background:var(--c-primary);color:#fff;
  display:grid;place-items:center;
  font-size:14px;font-weight:700;
  border:3px solid var(--c-bg);
  position:relative;z-index:1;
}
.tl-item:nth-child(even) .tl-dot{background:var(--c-teal);}
.tl-card{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-s);}
.tl-card .h3{font-size:18px;margin-bottom:10px;}
.tl-card p{font-size:15px;color:var(--c-text-2);line-height:1.9;}
.tl-points{margin-top:16px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;}
.tl-points li{
  display:flex;gap:8px;align-items:flex-start;
  font-size:14px;color:var(--c-text-2);line-height:1.75;
}
.tl-points li::before{
  content:"";flex:0 0 auto;width:7px;height:7px;border-radius:50%;
  background:var(--c-teal);margin-top:9px;
}
.tl-tag{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;color:var(--c-text-3);
  background:var(--c-bg);border:1px solid var(--c-border);
  border-radius:var(--r-pill);padding:3px 10px;margin-bottom:12px;
}

/* ---------- 信息列表 ---------- */
.info-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.info-card{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--sh-1);
}
.info-card h3{font-size:17px;font-weight:600;margin-bottom:16px;display:flex;align-items:center;gap:10px;}
.info-card h3 .dot{width:8px;height:8px;border-radius:50%;background:var(--c-danger);flex:0 0 auto;}
.info-card.is-safe h3 .dot{background:var(--c-teal);}
.info-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;border-bottom:1px dashed var(--c-border);
  font-size:15px;color:var(--c-text-2);line-height:1.8;
}
.info-list li:last-child{border-bottom:none;padding-bottom:0;}
.info-list li::before{
  content:"";flex:0 0 auto;width:3px;border-radius:2px;
  background:var(--c-primary);margin-top:9px;height:16px;
}
.info-card.is-safe .info-list li::before{background:var(--c-teal);}
.info-list b{color:var(--c-text);font-weight:600;}

/* ---------- 图标卡 ---------- */
.icon-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.icon-card{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.icon-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-s);}
.icon-card .icon-box{
  width:44px;height:44px;border-radius:12px;
  background:var(--c-primary-s);color:var(--c-primary);
  display:grid;place-items:center;margin-bottom:16px;
}
.icon-card .icon-box svg{
  width:22px;height:22px;fill:none;stroke:currentColor;
  stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;
}
.icon-card h3{font-size:16px;font-weight:600;margin-bottom:8px;}
.icon-card p{font-size:14px;color:var(--c-text-2);line-height:1.8;}

/* ---------- 图文卡 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:16px;
  box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-s);}
.thumb{
  position:relative;aspect-ratio:16/9;border-radius:var(--r-md);
  overflow:hidden;background:var(--c-primary-s);
  display:grid;place-items:center;
}
.thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.thumb img.is-hidden{display:none;}
.thumb-ph{
  width:30px;height:30px;fill:none;stroke:var(--c-primary);
  stroke-width:1.5;opacity:.5;
}
.card-body{padding:16px 8px 8px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.card-body h3{font-size:16px;font-weight:600;line-height:1.6;}
.card-body p{font-size:14px;color:var(--c-text-2);line-height:1.8;}
.card-foot{margin-top:auto;padding-top:8px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:840px;margin:0 auto;}
.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  margin-bottom:12px;
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;
  font-size:16px;font-weight:600;color:var(--c-text);
  transition:color var(--ease),background var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--c-primary-s);}
.faq-item[open] summary{color:var(--c-primary);}
.faq-icon{
  position:relative;flex:0 0 auto;width:18px;height:18px;
  transition:transform var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--c-primary);border-radius:2px;transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:1.8px;}
.faq-icon::after{width:1.8px;height:14px;transition:opacity var(--ease);}
.faq-item[open] .faq-icon{transform:rotate(180deg);}
.faq-item[open] .faq-icon::after{opacity:0;}
.faq-body{padding:0 22px 20px;border-top:1px solid var(--c-border);}
.faq-body p{font-size:15px;line-height:1.85;color:var(--c-text-2);padding-top:16px;}

/* ---------- 转化带 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--c-ink-800);
  color:var(--c-on-dark);
  border-radius:var(--r-xl);
  padding:48px;
  display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;
}
.cta-band h2{font-size:26px;line-height:1.5;font-weight:700;color:#fff;}
.cta-band p{margin-top:14px;font-size:15px;color:var(--c-on-dark-2);line-height:1.9;}
.cta-band .cta-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;}
.cta-panel{
  background:rgba(255,255,255,.04);
  border:1px solid var(--c-border-d);
  border-radius:var(--r-lg);
  padding:24px;
}
.cta-panel h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
.cta-panel li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:var(--c-on-dark-2);line-height:1.8;
  padding:8px 0;
}
.cta-panel li::before{
  content:"";flex:0 0 auto;width:7px;height:7px;border-radius:50%;
  background:var(--c-gold);margin-top:9px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-ink-900);
  color:var(--c-on-dark);
  margin-top:88px;
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:600;margin-bottom:16px;}
.footer-about{font-size:14px;color:var(--c-on-dark-2);line-height:1.85;max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--c-on-dark);margin:0 0 16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--c-on-dark-2);transition:color var(--ease),transform var(--ease);display:inline-block;}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  margin-top:48px;padding-top:20px;
  border-top:1px solid var(--c-border-d);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--c-text-3);}
.footer-bottom .icp{color:#6F6A8C;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .icon-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .overview-track{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:991px){
  .section{padding:64px 0;}
  .section--tight{padding:48px 0;}
  .h1{font-size:30px;}
  .h2{font-size:23px;margin-top:40px;}
  .h3{font-size:18px;}
  .nav-links{
    display:none;
    position:absolute;left:0;right:0;top:calc(100% + 12px);
    background:var(--c-surface);
    border:1px solid var(--c-border);
    border-radius:var(--r-lg);
    box-shadow:var(--sh-2);
    padding:16px;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:10px;
    margin-left:0;
  }
  .nav-links.is-open{display:grid;}
  .nav-item{
    background:var(--c-bg);
    border:1px solid var(--c-border);
    justify-content:flex-start;
  }
  .nav-item.is-active::after{display:none;}
  .nav-cta-mobile{display:block;grid-column:1 / -1;}
  .nav-cta-mobile .btn{width:100%;}
  .nav-toggle{display:block;margin-left:auto;}
  .nav-actions{display:none;}
  .tl-points{grid-template-columns:1fr;}
  .info-grid{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;padding:32px;gap:28px;}
  .overview-track{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-about{max-width:none;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:48px 0;}
  .page-hero{padding:40px 0 48px;}
  .brand-text{font-size:15px;}
  .nav-card{padding:0 14px;min-height:64px;gap:12px;}
  .timeline::before{left:15px;}
  .tl-item{grid-template-columns:32px 1fr;gap:16px;}
  .tl-dot{width:32px;height:32px;font-size:13px;}
  .tl-card{padding:20px;}
  .cta-band{padding:24px;border-radius:var(--r-lg);}
  .cta-band h2{font-size:21px;}
  .site-footer{margin-top:64px;padding:48px 0 24px;}
}
@media (max-width:519px){
  .container{padding:0 16px;}
  .nav-shell{padding:0 8px;}
  .card-grid{grid-template-columns:1fr;}
  .icon-grid{grid-template-columns:1fr;}
  .overview-track{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .h1{font-size:26px;line-height:1.4;}
  .page-hero .subtitle{font-size:15px;}
  .timeline::before{left:13px;}
  .tl-item{grid-template-columns:28px 1fr;gap:12px;}
  .tl-dot{width:28px;height:28px;font-size:12px;border-width:2px;}
  .btn{width:100%;}
  .hero-actions .btn{width:100%;}
}

/* roulang page: category4 */
:root{
  --c-ink-900:#14102B;
  --c-ink-800:#1E1840;
  --c-primary:#3A2F86;
  --c-primary-d:#2C2470;
  --c-primary-s:#EDEAF9;
  --c-teal:#1FA394;
  --c-teal-s:#E4F5F2;
  --c-gold:#E0A63C;
  --c-bg:#F8F7F4;
  --c-surface:#FFFFFF;
  --c-border:#E7E4DE;
  --c-border-d:#2E2750;
  --c-text:#1B1730;
  --c-text-2:#5B5670;
  --c-text-3:#8E8AA0;
  --c-on-dark:#ECEAF6;
  --c-on-dark-2:#A9A4C4;
  --c-danger:#C0392B;
  --c-success:#1FA394;
  --sh-1:0 1px 2px rgba(20,16,43,.04);
  --sh-2:0 10px 28px -12px rgba(58,47,134,.22);
  --sh-focus:0 0 0 3px rgba(58,47,134,.22);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Inter',var(--font-cn);
  font-size:16px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-md);}
a{color:var(--c-teal);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-primary);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--c-text);letter-spacing:.01em;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:var(--sh-focus);border-radius:var(--r-sm);}

.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-sm{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:30px;line-height:1.45;font-weight:700;}
.section-head p{margin-top:14px;font-size:16px;line-height:1.9;color:var(--c-text-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--c-primary);background:var(--c-primary-s);
  padding:5px 12px;border-radius:999px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary);}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:12px 0 6px;}
.nav-shell{max-width:1200px;margin:0 auto;padding:0 12px;}
.nav-card{
  position:relative;
  display:flex;align-items:center;gap:18px;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  min-height:72px;
  padding:0 20px;
  box-shadow:var(--sh-1);
  transition:box-shadow .18s ease;
}
.nav-card.is-stuck{box-shadow:var(--sh-2);}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;
  flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px;display:block;}
.brand-text{font-size:16px;font-weight:700;color:var(--c-text);letter-spacing:.01em;white-space:nowrap;}
.brand:hover .brand-text{color:var(--c-primary);}

.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-item{
  position:relative;
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 12px;border-radius:var(--r-sm);
  font-size:14px;color:var(--c-text-2);
  transition:background .18s ease,color .18s ease;
  white-space:nowrap;
}
.nav-item svg{
  width:20px;height:20px;flex:0 0 auto;
  fill:none;stroke:currentColor;stroke-width:1.7;
  stroke-linecap:round;stroke-linejoin:round;
}
.nav-item:hover{background:var(--c-primary-s);color:var(--c-primary);}
.nav-item.is-active{background:var(--c-primary-s);color:var(--c-primary);font-weight:600;}
.nav-item.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.nav-cta-mobile{display:none;}

.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-ghost{font-size:14px;color:var(--c-text-2);}
.nav-ghost:hover{color:var(--c-primary);}

.nav-toggle{
  display:none;position:relative;
  width:44px;height:44px;flex:0 0 auto;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-sm);
  cursor:pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;
  background:var(--c-text);transform:translateX(-50%);
  transition:transform .18s ease,opacity .18s ease;
  content:"";
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateX(-50%) translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateX(-50%) translateY(-6px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,color .18s ease,transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);}
.btn-accent{background:var(--c-gold);color:var(--c-ink-900);}
.btn-accent:hover{background:#D0962F;color:var(--c-ink-900);transform:translateY(-1px);}
.btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-s);color:var(--c-primary);}
.btn-outline-light{background:transparent;border-color:var(--c-border-d);color:var(--c-on-dark);}
.btn-outline-light:hover{background:rgba(255,255,255,.08);color:#fff;}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}
.btn.is-loading{pointer-events:none;opacity:.75;}
.btn.is-loading::before{
  content:"";width:16px;height:16px;border-radius:50%;
  border:2px solid currentColor;border-top-color:transparent;
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-teal);}
.link-more svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease;}
.link-more:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.link-more:hover svg{transform:translateX(3px);}

/* ---------- 页头区 ---------- */
.page-hero{padding:40px 0 8px;position:relative;overflow:hidden;}
.page-hero .stars{position:absolute;right:24px;top:12px;width:280px;opacity:.12;pointer-events:none;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-text-3);margin-bottom:14px;}
.breadcrumb a{color:var(--c-text-3);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:var(--c-border);}
.breadcrumb .current{color:var(--c-text);}
.page-hero h1{font-size:40px;line-height:1.3;font-weight:700;max-width:900px;}
.page-hero .lede{margin-top:16px;font-size:17px;line-height:1.9;color:var(--c-text-2);max-width:780px;}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;
  padding:4px 10px;border-radius:999px;
  background:var(--c-primary-s);color:var(--c-primary);
}
.badge-teal{background:var(--c-teal-s);color:var(--c-teal);}
.badge svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}

.dot-divider{
  height:1px;margin:40px 0 0;
  background-image:radial-gradient(var(--c-border) 1px,transparent 1px);
  background-size:6px 1px;background-repeat:repeat-x;
}

/* ---------- 图标矩阵 ---------- */
.matrix-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.icon-card{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.icon-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-s);}
.icon-card .ico{
  width:44px;height:44px;border-radius:12px;
  background:var(--c-primary-s);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;
  margin-bottom:16px;
}
.icon-card .ico svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.icon-card h3{font-size:17px;font-weight:600;line-height:1.5;}
.icon-card p{margin-top:10px;font-size:14px;line-height:1.85;color:var(--c-text-2);}
.icon-card .node{margin-top:16px;font-size:13px;color:var(--c-text-3);display:flex;align-items:center;gap:8px;}
.icon-card .node::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--c-primary);}

/* ---------- 对照表 ---------- */
.table-card{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.table-scroll{overflow-x:auto;}
table.compare{width:100%;border-collapse:collapse;min-width:760px;}
table.compare th{
  background:var(--c-primary-s);color:var(--c-primary);
  font-size:14px;font-weight:600;text-align:left;
  padding:14px 20px;white-space:nowrap;
}
table.compare td{
  padding:16px 20px;font-size:15px;line-height:1.8;
  color:var(--c-text-2);border-top:1px solid var(--c-border);
  vertical-align:top;
}
table.compare td:first-child{color:var(--c-text);font-weight:600;}
table.compare tbody tr:hover td{background:#FBFAF8;}
.table-note{padding:14px 20px;font-size:13px;color:var(--c-text-3);border-top:1px solid var(--c-border);}

/* ---------- 信息列表 ---------- */
.info-list{display:grid;gap:12px;}
.info-item{
  display:flex;gap:12px;align-items:flex-start;
  padding:16px 20px;background:var(--c-surface);
  border:1px solid var(--c-border);border-radius:var(--r-md);
  box-shadow:var(--sh-1);
}
.info-item::before{
  content:"";flex:0 0 auto;margin-top:8px;
  width:8px;height:8px;border-radius:50%;background:var(--c-teal);
}
.info-item strong{display:block;font-size:15px;font-weight:600;color:var(--c-text);}
.info-item span{display:block;font-size:14px;color:var(--c-text-2);margin-top:4px;}

/* ---------- FAQ ---------- */
.faq-list{max-width:840px;display:grid;gap:12px;}
.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:transparent;border:0;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--c-text);text-align:left;line-height:1.6;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--c-primary);}
.faq-item.is-open .faq-q{color:var(--c-primary);}
.faq-sign{
  flex:0 0 auto;width:22px;height:22px;position:relative;
  transition:transform .18s ease;
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-sign::before{width:12px;height:2px;}
.faq-sign::after{width:2px;height:12px;transition:opacity .18s ease;}
.faq-item.is-open .faq-sign{transform:rotate(180deg);}
.faq-item.is-open .faq-sign::after{opacity:0;}
.faq-a{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--c-text-2);display:none;max-width:760px;}
.faq-item.is-open .faq-a{display:block;}

/* ---------- 相关分类 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-s);}
.thumb{aspect-ratio:16/9;background:var(--c-primary-s);position:relative;overflow:hidden;border-radius:0;}
.thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.card-body{padding:20px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:17px;font-weight:600;line-height:1.5;}
.card-body p{font-size:14px;line-height:1.85;color:var(--c-text-2);}
.card-body .link-more{margin-top:auto;padding-top:6px;}

/* ---------- 转化带 ---------- */
.cta-band{
  background:var(--c-ink-800);
  border:1px solid var(--c-border-d);
  border-radius:20px;
  padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{color:var(--c-on-dark);font-size:26px;line-height:1.5;font-weight:700;}
.cta-band p{color:var(--c-on-dark-2);font-size:15px;margin-top:12px;max-width:620px;line-height:1.85;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px dashed var(--c-border);
  border-radius:var(--r-lg);
  background:var(--c-surface);
  padding:48px;text-align:center;
}
.empty-state svg{width:40px;height:40px;margin:0 auto 14px;fill:none;stroke:var(--c-text-3);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.empty-state p{font-size:14px;color:var(--c-text-2);margin-bottom:18px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink-900);color:var(--c-on-dark);margin-top:88px;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#fff;}
.footer-about{margin-top:16px;font-size:14px;line-height:1.85;color:var(--c-on-dark-2);max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--c-on-dark);margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--c-on-dark-2);transition:color .18s ease,transform .18s ease;display:inline-block;}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  margin-top:48px;padding:20px 0 28px;border-top:1px solid var(--c-border-d);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--c-on-dark-2);margin:0;}
.footer-bottom .icp{color:#6F6A8C;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-item{padding:8px 10px;font-size:13.5px;}
  .brand-text{font-size:15px;}
}
@media (max-width:991px){
  .section{padding:64px 0;}
  .section-sm{padding:48px 0;}
  .nav-card{padding:0 14px;gap:10px;}
  .nav-toggle{display:block;margin-left:auto;}
  .nav-actions .nav-ghost{display:none;}
  .nav-links{
    position:absolute;left:0;right:0;top:calc(100% + 10px);
    display:none;grid-template-columns:1fr 1fr;gap:8px;
    background:var(--c-surface);
    border:1px solid var(--c-border);
    border-radius:var(--r-lg);
    box-shadow:var(--sh-2);
    padding:12px;
  }
  .nav-links.is-open{display:grid;}
  .nav-item{padding:12px;background:var(--c-bg);border-radius:12px;font-size:14px;}
  .nav-item.is-active{background:var(--c-primary-s);}
  .nav-item.is-active::after{display:none;}
  .nav-cta-mobile{display:block;grid-column:1 / -1;margin-top:4px;}
  .nav-cta-mobile .btn{width:100%;}
  .page-hero h1{font-size:28px;}
  .page-hero .lede{font-size:16px;}
  .matrix-grid{grid-template-columns:repeat(2,1fr);}
  .related-grid{grid-template-columns:1fr;}
  .cta-band{padding:32px;border-radius:16px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:48px 0;}
  .section-head h2{font-size:23px;}
  .matrix-grid{grid-template-columns:1fr;gap:16px;}
  .page-hero{padding:28px 0 0;}
  .page-hero .stars{display:none;}
  .cta-band{padding:24px;flex-direction:column;align-items:flex-start;}
  .cta-band h2{font-size:21px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:479px){
  .container{padding:0 16px;}
  .brand-text{font-size:14px;}
  .btn{padding:12px 20px;font-size:14px;}
  .page-hero h1{font-size:24px;}
  .icon-card,.card-body{padding:18px;}
}