/* roulang page: index */
:root{
  --brand-900:#0B3A34;
  --brand-700:#0F6F63;
  --brand-600:#12877A;
  --brand-100:#E7F2F0;
  --brand-50:#F2F8F7;
  --accent-500:#E8A33D;
  --accent-100:#FDF2E0;
  --alert:#C8452F;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E6E4DD;
  --ink:#1E2422;
  --ink-2:#4A5450;
  --ink-3:#7C8783;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:20px;
  --sh-sm:0 1px 2px rgba(11,58,52,.06);
  --sh-md:0 8px 24px -8px rgba(11,58,52,.14);
  --sh-lg:0 24px 60px -24px rgba(11,58,52,.22);
  --t:200ms cubic-bezier(.2,.8,.2,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-serif:"Source Han Serif SC","Noto Serif SC","Songti SC",serif;
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  padding-bottom:0;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-700);text-decoration:none;transition:color var(--t),background-color var(--t);}
a:hover{color:var(--brand-600);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em;line-height:1.28;color:var(--ink);}
p{margin:0;}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--ink);}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(232,163,61,.35);border-radius:var(--r-sm);}
::selection{background:var(--brand-100);color:var(--brand-900);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section--tint{background:var(--brand-50);}
.section--dark{background:var(--brand-900);color:#E8F0EE;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px;}
.sec-head h2{font-size:27px;}
.sec-head .sec-desc{margin-top:10px;font-size:15px;color:var(--ink-2);max-width:620px;line-height:1.8;}
.section--dark .sec-head h2{color:#F4FAF8;}
.section--dark .sec-desc{color:rgba(232,240,238,.72);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--brand-700);font-weight:600;text-transform:uppercase;margin-bottom:14px;}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent-500);border-radius:2px;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;white-space:nowrap;padding:6px 2px;border-bottom:1px solid transparent;}
.link-more svg{transition:transform var(--t);}
.link-more:hover svg{transform:translateX(4px);}
.link-more:hover{border-bottom-color:var(--brand-700);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(247,246,242,.86);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
  transition:background-color var(--t),box-shadow var(--t);
}
.site-header.is-scrolled{background:rgba(247,246,242,.96);box-shadow:var(--sh-sm);}
.nav-inner{display:flex;align-items:center;gap:20px;height:var(--nav-h);}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:26px;height:26px;flex:none;color:var(--brand-700);}
.brand-text{font-size:19px;font-weight:700;color:var(--ink);letter-spacing:.01em;line-height:1;}
.brand-text span{color:var(--brand-700);}
.brand:hover .brand-text{color:var(--brand-700);}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:14px;}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  border-radius:var(--r-sm);
}
.nav-links a:hover{background:var(--brand-50);color:var(--brand-700);}
.nav-links a.active{color:var(--brand-700);font-weight:600;}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--accent-500);border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{position:relative;width:200px;}
.nav-search input{
  width:100%;height:40px;border-radius:999px;border:1px solid var(--line);
  background:var(--surface);padding:0 16px 0 38px;font-size:14px;
  transition:border-color var(--t),box-shadow var(--t);
}
.nav-search input::placeholder{color:var(--ink-3);}
.nav-search input:focus{border-color:var(--brand-700);box-shadow:0 0 0 3px rgba(15,111,99,.14);outline:none;}
.nav-search svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--ink-3);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:999px;font-size:15px;font-weight:600;
  transition:transform var(--t),box-shadow var(--t),background-color var(--t),color var(--t),border-color var(--t);
  white-space:nowrap;
}
.btn:active{transform:translateY(0) scale(.99);}
.btn-primary{background:var(--brand-700);color:#fff;}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-sm);}
.btn-outline{border:1.5px solid var(--brand-700);color:var(--brand-700);background:transparent;}
.btn-outline:hover{background:rgba(15,111,99,.08);color:var(--brand-700);}
.btn-accent{background:var(--accent-500);color:var(--ink);}
.btn-accent:hover{background:#d9942c;color:var(--ink);transform:translateY(-1px);box-shadow:var(--sh-sm);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn svg{width:16px;height:16px;flex:none;}
.nav-burger{display:none;width:40px;height:40px;border-radius:10px;align-items:center;justify-content:center;flex-direction:column;gap:4px;}
.nav-burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform var(--t),opacity var(--t);}
.nav-burger:hover{background:var(--brand-50);}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(11,58,52,.45);opacity:0;pointer-events:none;transition:opacity var(--t);z-index:95;}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(84vw,336px);
  background:var(--surface);z-index:96;transform:translateX(102%);
  transition:transform 260ms cubic-bezier(.2,.8,.2,1);
  display:flex;flex-direction:column;padding:20px 0 28px;overflow-y:auto;
  box-shadow:var(--sh-lg);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 20px 16px;border-bottom:1px solid var(--line);}
.drawer-close{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--ink-2);}
.drawer-close:hover{background:var(--brand-50);color:var(--brand-700);}
.drawer-group{padding:16px 20px 4px;}
.drawer-group h4{font-size:12px;letter-spacing:.14em;color:var(--ink-3);font-weight:600;margin-bottom:8px;}
.drawer-nav a{
  display:flex;align-items:center;height:48px;padding:0 12px;font-size:15px;font-weight:500;
  color:var(--ink-2);border-radius:10px;border-left:3px solid transparent;
}
.drawer-nav a:hover{background:var(--brand-50);color:var(--brand-700);}
.drawer-nav a.active{border-left-color:var(--brand-700);background:var(--brand-50);color:var(--brand-700);font-weight:600;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;padding:14px 20px 0;}
.drawer-actions .btn{width:100%;}

/* ============ 通用按钮行 / 徽章 ============ */
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600;}
.badge-accent{background:var(--accent-100);color:#96631a;}
.meta-row{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-3);line-height:1.6;}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-3);display:inline-block;}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:96px 0 104px;background:var(--bg);}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(15,111,99,.05) 1px,transparent 1px);
  background-size:22px 22px;opacity:.9;pointer-events:none;
}
.hero-inner{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero h1{font-family:var(--font-serif);font-size:50px;line-height:1.22;font-weight:700;}
.hero h1 em{font-style:normal;color:var(--brand-700);}
.hero-sub{margin-top:20px;font-size:18px;line-height:1.8;color:var(--ink-2);max-width:520px;}
.hero-actions{margin-top:32px;}
.hero-metrics{display:flex;align-items:center;gap:0;margin-top:40px;flex-wrap:wrap;}
.hero-metrics .metric{padding:0 24px;border-right:1px solid var(--line);}
.hero-metrics .metric:first-child{padding-left:0;}
.hero-metrics .metric:last-child{border-right:0;}
.metric strong{display:block;font-size:24px;font-weight:700;color:var(--brand-700);line-height:1.2;}
.metric span{font-size:13px;color:var(--ink-3);}
.hero-visual{position:relative;}
.hero-visual img{border-radius:var(--r-xl);box-shadow:var(--sh-lg);aspect-ratio:16/10;object-fit:cover;width:100%;}
.hero-float{
  position:absolute;right:-14px;bottom:-26px;width:210px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-md);padding:14px 16px;
}
.hero-float h4{font-size:13px;color:var(--ink-3);font-weight:600;letter-spacing:.06em;margin-bottom:8px;}
.hero-float a{display:block;font-size:14px;font-weight:500;padding:5px 0;color:var(--ink-2);}
.hero-float a:hover{color:var(--brand-700);}
.hero-float a::before{content:"›";color:var(--accent-500);margin-right:6px;font-weight:700;}

/* ============ 信任条 ============ */
.trust{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.trust-inner{display:grid;grid-template-columns:repeat(4,1fr);}
.trust-item{padding:32px 24px;border-right:1px solid var(--line);}
.trust-item:last-child{border-right:0;}
.trust-item strong{display:block;font-size:28px;color:var(--brand-700);font-weight:700;line-height:1.2;}
.trust-item span{font-size:13px;color:var(--ink-3);}

/* ============ 卖点阶梯 ============ */
.ladder{border-top:1px solid var(--line);}
.ladder-row{
  display:grid;grid-template-columns:110px 1fr 1.35fr;gap:28px;align-items:start;
  padding:32px 20px;border-bottom:1px solid var(--line);
  transition:background-color var(--t);
}
.ladder-row:hover{background:var(--brand-50);}
.ladder-num{font-size:48px;font-weight:700;line-height:1;color:var(--accent-500);transition:color var(--t);}
.ladder-row:hover .ladder-num{color:var(--brand-700);}
.ladder-row h3{font-size:20px;}
.ladder-row p{font-size:15px;line-height:1.85;color:var(--ink-2);}

/* ============ 演示 ============ */
.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px;}
.tab{
  height:40px;padding:0 20px;border-radius:999px;border:1.5px solid var(--brand-700);
  color:var(--brand-700);font-size:14px;font-weight:600;background:transparent;transition:all var(--t);
}
.tab:hover{background:rgba(15,111,99,.08);}
.tab.active{background:var(--brand-700);border-color:var(--brand-700);color:#fff;}
.tab-panel{display:none;}
.tab-panel.active{display:block;animation:fadeUp 320ms cubic-bezier(.2,.8,.2,1);}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:translateY(0);}}
.demo-figure{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-md);border:1px solid var(--line);background:var(--surface);}
.demo-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.demo-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:28px;}
.demo-step{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;}
.demo-step h4{font-size:15px;margin-bottom:8px;display:flex;align-items:center;gap:8px;}
.demo-step h4 i{
  width:22px;height:22px;border-radius:50%;background:var(--brand-100);color:var(--brand-700);
  font-style:normal;font-size:12px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;flex:none;
}
.demo-step p{font-size:14px;line-height:1.8;color:var(--ink-2);}

/* ============ 证据 ============ */
.proof-top{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center;}
.quote{font-family:var(--font-serif);font-size:24px;line-height:1.75;color:var(--ink);position:relative;padding-left:22px;}
.quote::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;background:var(--brand-700);border-radius:2px;}
.quote-by{margin-top:16px;font-size:13px;color:var(--ink-3);}
.data-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;}
.data-cell{background:var(--surface);padding:26px 22px;}
.data-cell strong{display:block;font-size:32px;font-weight:700;color:var(--brand-700);line-height:1.15;}
.data-cell span{font-size:13px;color:var(--ink-3);}
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px;}
.review-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;transition:transform var(--t),box-shadow var(--t);}
.review-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--brand-100),var(--accent-100));display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;color:var(--brand-700);flex:none;}
.review-head b{font-size:14px;display:block;font-weight:600;}
.review-head em{font-style:normal;font-size:12px;color:var(--ink-3);}
.review-card p{font-size:14px;line-height:1.8;color:var(--ink-2);}

/* ============ 资讯 ============ */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.chip{height:34px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink-2);font-size:13px;font-weight:500;display:inline-flex;align-items:center;}
.chip.active{background:var(--brand-700);border-color:var(--brand-700);color:#fff;}
.news-list{display:flex;flex-direction:column;gap:20px;}
.news-feature{
  display:grid;grid-template-columns:5fr 7fr;gap:0;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  transition:transform var(--t),box-shadow var(--t);
}
.news-feature:hover{transform:translateY(-2px);box-shadow:var(--sh-md);}
.nf-media{overflow:hidden;background:linear-gradient(135deg,var(--brand-100),var(--accent-100));min-height:260px;}
.nf-media img{width:100%;height:100%;object-fit:cover;transition:transform 240ms cubic-bezier(.2,.8,.2,1);}
.news-feature:hover .nf-media img{transform:scale(1.04);}
.nf-body{padding:32px;display:flex;flex-direction:column;gap:14px;}
.nf-body h3{font-size:22px;line-height:1.5;}
.nf-body h3 a{color:var(--ink);}
.nf-body h3 a:hover{color:var(--brand-700);}
.nf-body p{font-size:15px;line-height:1.8;color:var(--ink-2);}
.news-row{
  display:grid;grid-template-columns:120px 1fr auto;gap:20px;align-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 24px;transition:background-color var(--t),transform var(--t),box-shadow var(--t);
}
.news-row:hover{background:var(--brand-50);transform:translateY(-2px);box-shadow:var(--sh-sm);}
.news-row h3{font-size:17px;font-weight:600;line-height:1.6;}
.news-row h3 a{color:var(--ink);}
.news-row h3 a:hover{color:var(--brand-700);}
.news-row .news-sum{font-size:14px;color:var(--ink-2);line-height:1.75;margin-top:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-row .news-time{font-size:13px;color:var(--ink-3);white-space:nowrap;}
.empty-state{
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-lg);
  padding:56px 24px;text-align:center;
}
.empty-state svg{width:48px;height:48px;color:var(--ink-3);margin:0 auto 14px;}
.empty-state p{font-size:15px;color:var(--ink-2);margin-bottom:18px;}

/* ============ 价格 ============ */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.plan{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:32px 26px 28px;display:flex;flex-direction:column;
  transition:transform var(--t),box-shadow var(--t);
}
.plan:hover{transform:translateY(-2px);box-shadow:var(--sh-md);}
.plan.featured{border:2px solid var(--brand-700);background:var(--brand-50);transform:translateY(-8px);box-shadow:var(--sh-md);}
.plan.featured::before{
  content:"推荐";position:absolute;top:-13px;left:26px;background:var(--accent-500);color:var(--ink);
  font-size:12px;font-weight:700;height:26px;padding:0 12px;border-radius:999px;display:inline-flex;align-items:center;
}
.plan h3{font-size:19px;}
.plan .plan-desc{font-size:14px;color:var(--ink-3);margin-top:6px;min-height:42px;}
.plan-price{display:flex;align-items:baseline;gap:6px;margin:18px 0 20px;}
.plan-price strong{font-size:40px;font-weight:700;color:var(--ink);line-height:1;font-variant-numeric:tabular-nums;}
.plan-price span{font-size:14px;color:var(--ink-3);}
.plan-features{display:flex;flex-direction:column;gap:10px;margin-bottom:26px;}
.plan-features li{display:flex;gap:10px;font-size:15px;line-height:1.7;color:var(--ink-2);}
.plan-features svg{width:16px;height:16px;color:var(--brand-700);flex:none;margin-top:6px;}
.plan .btn{margin-top:auto;width:100%;}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq{border-top:1px solid var(--line);}
.faq details{border-bottom:1px solid var(--line);}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;font-size:17px;font-weight:600;line-height:1.6;color:var(--ink);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{color:var(--brand-700);}
.faq summary .arrow{width:20px;height:20px;flex:none;color:var(--ink-3);transition:transform 220ms cubic-bezier(.2,.8,.2,1);}
.faq details[open] summary .arrow{transform:rotate(180deg);color:var(--brand-700);}
.faq .answer{padding:0 0 22px;font-size:15px;line-height:1.9;color:var(--ink-2);max-width:760px;}
.faq details[open] .answer{animation:fadeUp 220ms ease;}

/* ============ CTA ============ */
.cta{background:var(--brand-900);color:#E8F0EE;padding:80px 0;}
.cta-inner{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;}
.cta h2{color:#F4FAF8;font-size:30px;line-height:1.35;}
.cta p.cta-lead{margin-top:16px;font-size:16px;line-height:1.85;color:rgba(232,240,238,.78);max-width:460px;}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:12px;}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:15px;color:rgba(232,240,238,.85);}
.cta-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500);flex:none;}
.form-card{background:var(--surface);border-radius:var(--r-xl);box-shadow:var(--sh-lg);padding:32px;}
.form-card h3{font-size:20px;margin-bottom:6px;}
.form-card .form-hint-top{font-size:13px;color:var(--ink-3);margin-bottom:22px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:8px;font-weight:500;}
.field input,.field select,.field textarea{
  width:100%;height:48px;border-radius:10px;border:1px solid var(--line);background:var(--surface);
  padding:0 14px;transition:border-color var(--t),box-shadow var(--t);outline:none;
}
.field textarea{height:auto;padding:12px 14px;line-height:1.7;resize:vertical;min-height:96px;}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3);}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand-700);box-shadow:0 0 0 3px rgba(15,111,99,.14);}
.field input:disabled,.field select:disabled,.field textarea:disabled{background:#F3F2EE;cursor:not-allowed;opacity:.75;}
.form-card .btn{width:100%;margin-top:8px;}
.form-foot{font-size:12px;color:var(--ink-3);margin-top:12px;text-align:center;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:#E8F0EE;padding:64px 0 24px;margin-top:0;}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.footer-brand .brand-text{color:#fff;font-size:19px;}
.footer-brand .brand-mark{color:var(--accent-500);}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(232,240,238,.7);max-width:300px;}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:14px;}
.footer-col a{font-size:14px;color:rgba(232,240,238,.82);}
.footer-col a:hover{color:var(--accent-500);text-decoration:underline;text-underline-offset:3px;}
.footer-col li{font-size:14px;color:rgba(232,240,238,.7);}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:12px;color:rgba(232,240,238,.66);
}
.footer-bottom a{color:rgba(232,240,238,.66);}
.footer-bottom a:hover{color:var(--accent-500);}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:80;
  display:inline-flex;align-items:center;gap:8px;
  height:52px;padding:0 24px;border-radius:999px;
  background:var(--accent-500);color:var(--ink);font-weight:700;font-size:15px;
  box-shadow:var(--sh-md);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity 300ms cubic-bezier(.2,.8,.2,1),transform 300ms cubic-bezier(.2,.8,.2,1),background-color var(--t);
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{background:#d9942c;color:var(--ink);}
.float-cta svg{width:16px;height:16px;}
.mobile-bar{display:none;}

/* ============ 滚动显现 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 400ms cubic-bezier(.2,.8,.2,1),transform 400ms cubic-bezier(.2,.8,.2,1);}
.reveal.in{opacity:1;transform:translateY(0);}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .section{padding:112px 0;}
}
@media (max-width:1199px){
  .nav-search{width:160px;}
  .hero h1{font-size:44px;}
  .hero-inner{gap:40px;}
}
@media (max-width:991px){
  :root{--nav-h:60px;}
  .nav-links{display:none;}
  .nav-search{display:none;}
  .nav-right .btn-outline{display:none;}
  .nav-burger{display:flex;}
  .section{padding:64px 0;}
  .hero{padding:64px 0 76px;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:36px;}
  .hero-sub{max-width:none;}
  .hero-float{right:12px;bottom:-18px;}
  .trust-inner{grid-template-columns:repeat(2,1fr);}
  .trust-item{border-bottom:1px solid var(--line);}
  .trust-item:nth-child(2n){border-right:0;}
  .trust-item:nth-last-child(-n+2){border-bottom:0;}
  .ladder-row{grid-template-columns:80px 1fr;gap:20px;}
  .ladder-row p{grid-column:1 / -1;padding-left:0;}
  .ladder-num{font-size:38px;}
  .proof-top{grid-template-columns:1fr;gap:32px;}
  .reviews{grid-template-columns:1fr;gap:16px;}
  .plans{grid-template-columns:1fr;gap:20px;}
  .plan.featured{transform:none;}
  .plan.featured{order:-1;}
  .cta-inner{grid-template-columns:1fr;gap:36px;}
  .cta{padding:64px 0;}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .news-feature{grid-template-columns:1fr;}
  .nf-media{min-height:200px;}
  .demo-steps{grid-template-columns:1fr;gap:16px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .hero{padding:48px 0 64px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:16px;}
  .hero-metrics{gap:0;margin-top:28px;}
  .hero-metrics .metric{padding:0 14px;}
  .metric strong{font-size:20px;}
  .hero-float{position:static;width:100%;margin-top:18px;box-shadow:var(--sh-sm);}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px;}
  .sec-head h2{font-size:22px;}
  .ladder-row{grid-template-columns:56px 1fr;padding:24px 12px;gap:14px;}
  .ladder-num{font-size:30px;}
  .ladder-row h3{font-size:18px;}
  .news-row{grid-template-columns:1fr;gap:8px;padding:18px;}
  .news-row .news-time{white-space:normal;}
  .nf-body{padding:22px;}
  .nf-body h3{font-size:19px;}
  .btn-lg{height:48px;padding:0 22px;}
  .float-cta{display:none;}
  .mobile-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:80;
    background:rgba(255,255,255,.96);border-top:1px solid var(--line);
    box-shadow:0 -1px 8px rgba(11,58,52,.06);
    padding:8px 16px calc(8px + env(safe-area-inset-bottom));
    gap:10px;align-items:center;
  }
  .mobile-bar .btn{flex:1;height:44px;}
  .mobile-bar .to-top{
    width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface);
    display:flex;align-items:center;justify-content:center;color:var(--brand-700);flex:none;
  }
  body{padding-bottom:76px;}
  .data-grid{grid-template-columns:repeat(2,1fr);}
  .data-cell{padding:20px 16px;}
  .data-cell strong{font-size:26px;}
  .plan{padding:26px 20px 22px;}
  .form-card{padding:24px 18px;}
  .quote{font-size:20px;}
  .cta h2{font-size:24px;}
  .footer-top{grid-template-columns:1fr 1fr;}
  .footer-bottom{justify-content:flex-start;}
}
@media (max-width:480px){
  .hero h1{font-size:28px;line-height:1.3;}
  .brand-text{font-size:17px;}
  .nav-right .btn-accent{padding:0 14px;}
  .trust-inner{grid-template-columns:1fr;}
  .trust-item{border-right:0!important;border-bottom:1px solid var(--line);}
  .trust-item:last-child{border-bottom:0;}
  .chips{overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px;}
  .chip{flex:none;}
  .tabs{overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px;}
  .tab{flex:none;}
  .demo-figure img{aspect-ratio:4/3;}
}

/* roulang page: article */
:root{
  --brand-900:#0B3A34;
  --brand-700:#0F6F63;
  --brand-600:#12877A;
  --brand-100:#E7F2F0;
  --brand-50:#F2F8F7;
  --accent-500:#E8A33D;
  --accent-100:#FDF2E0;
  --alert:#C8452F;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E6E4DD;
  --ink:#1E2422;
  --ink-2:#4A5450;
  --ink-3:#7C8783;
  --r-s:8px;
  --r-m:12px;
  --r-l:16px;
  --r-xl:20px;
  --shadow-sm:0 1px 2px rgba(11,58,52,.06);
  --shadow-md:0 8px 24px -8px rgba(11,58,52,.14);
  --shadow-lg:0 24px 60px -24px rgba(11,58,52,.22);
  --ease:cubic-bezier(.2,.8,.2,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-serif:"Source Han Serif SC","Noto Serif SC","Songti SC",serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease);}
a:hover{color:var(--brand-600);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.35;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
svg{display:block;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(232,163,61,.35);border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,246,242,.86);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
  transition:background-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{background:rgba(247,246,242,.96);box-shadow:var(--shadow-sm);}
.header-inner{display:flex;align-items:center;gap:16px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{width:24px;height:24px;color:var(--brand-700);}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.brand-text span{color:var(--brand-700);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:12px;}
.nav-links a{
  position:relative;display:inline-block;padding:8px 14px;border-radius:var(--r-s);
  font-size:15px;font-weight:500;color:var(--ink-2);white-space:nowrap;
}
.nav-links a:hover{background:var(--brand-50);color:var(--brand-700);}
.nav-links a.active{color:var(--brand-700);font-weight:600;}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--accent-500);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.search-box{width:200px;}
.search-box input{
  width:100%;height:40px;padding:0 14px;border:1px solid var(--line);border-radius:999px;
  background:var(--surface);font-size:14px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box input::placeholder{color:var(--ink-3);}
.search-box input:focus{border-color:var(--brand-700);box-shadow:0 0 0 3px rgba(15,111,99,.14);outline:none;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:999px;font-size:15px;font-weight:600;
  border:1.5px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--brand-700);color:#fff;}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-sm);}
.btn-primary:active{transform:none;filter:brightness(.96);}
.btn-ghost{border-color:var(--brand-700);color:var(--brand-700);background:transparent;}
.btn-ghost:hover{background:rgba(15,111,99,.08);color:var(--brand-700);}
.btn-accent{background:var(--accent-500);color:var(--ink);}
.btn-accent:hover{background:#f0ae4d;color:var(--ink);transform:translateY(-1px);box-shadow:var(--shadow-sm);}
.btn-accent:active{transform:none;filter:brightness(.96);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center;background:var(--surface);
}
.menu-toggle svg{width:20px;height:20px;color:var(--ink-2);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,58,52,.45);opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease),visibility .25s var(--ease);z-index:90;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,336px);background:var(--surface);
  z-index:100;transform:translateX(100%);transition:transform .28s var(--ease);
  overflow-y:auto;padding:20px 0 32px;box-shadow:var(--shadow-lg);
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 20px 16px;border-bottom:1px solid var(--line);}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;}
.drawer-close svg{width:18px;height:18px;color:var(--ink-2);}
.drawer-group{padding:16px 20px 4px;}
.drawer-group h4{font-size:12px;color:var(--ink-3);letter-spacing:.08em;margin-bottom:8px;font-weight:600;}
.drawer-group a{
  display:flex;align-items:center;height:48px;padding:0 12px;border-radius:10px;
  font-size:15px;color:var(--ink-2);border-left:3px solid transparent;
}
.drawer-group a:hover{background:var(--brand-50);color:var(--brand-700);}
.drawer-group a.active{color:var(--brand-700);font-weight:600;border-left-color:var(--brand-700);background:var(--brand-50);}
.drawer-cta{padding:20px;display:grid;gap:10px;}
.drawer-cta .btn{width:100%;}

.breadcrumb{padding:20px 0 0;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:#c9c7c0;}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb [aria-current]{color:var(--ink-3);max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

.article-shell{padding:24px 0 0;}
.article-head{max-width:820px;padding-bottom:24px;}
.article-head h1{font-size:34px;line-height:1.35;margin:14px 0 16px;letter-spacing:.01em;}
.badge{
  display:inline-block;padding:3px 10px;border-radius:999px;background:var(--brand-100);
  color:var(--brand-700);font-size:12px;font-weight:600;line-height:1.6;
}
.badge-accent{background:var(--accent-100);color:#8a5c12;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--ink-3);line-height:1.6;}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#cfcdc6;}
.article-cover{margin:0 0 32px;border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);background:var(--surface);}
.article-cover img{width:100%;height:auto;max-height:420px;object-fit:cover;aspect-ratio:21/9;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start;padding-bottom:16px;}
.article-main{max-width:760px;min-width:0;}
.entry-content{
  font-size:17px;line-height:1.95;color:var(--ink-2);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:36px 40px;box-shadow:var(--shadow-sm);
}
.entry-content p{margin:0 0 1.15em;}
.entry-content h2{
  font-size:27px;line-height:1.4;margin:2.4em 0 .8em;padding-left:14px;
  border-left:4px solid var(--accent-500);color:var(--ink);scroll-margin-top:96px;
}
.entry-content h3{font-size:21px;margin:1.8em 0 .6em;color:var(--ink);scroll-margin-top:96px;}
.entry-content h4{font-size:16px;margin:1.4em 0 .5em;color:var(--ink);}
.entry-content h2:first-child,.entry-content h3:first-child{margin-top:0;}
.entry-content ul,.entry-content ol{margin:0 0 1.15em;padding-left:4px;}
.entry-content ul li{position:relative;padding-left:18px;margin-bottom:8px;line-height:1.9;}
.entry-content ul li::before{content:"";position:absolute;left:2px;top:.78em;width:6px;height:6px;border-radius:50%;background:var(--brand-700);}
.entry-content ol{list-style:none;counter-reset:item;}
.entry-content ol li{position:relative;padding-left:26px;margin-bottom:8px;line-height:1.9;counter-increment:item;}
.entry-content ol li::before{
  content:counter(item);position:absolute;left:0;top:.15em;color:var(--brand-700);
  font-weight:700;font-size:15px;
}
.entry-content blockquote{
  margin:1.4em 0;padding:16px 20px;background:var(--brand-50);
  border-left:3px solid var(--brand-700);border-radius:0 var(--r-m) var(--r-m) 0;color:var(--ink-2);
}
.entry-content blockquote p:last-child{margin-bottom:0;}
.entry-content img{border-radius:var(--r-m);margin:1.4em 0;}
.entry-content figure{margin:1.4em 0;}
.entry-content figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:8px;}
.entry-content table{
  width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;
}
.entry-content th{background:var(--brand-50);text-align:left;font-weight:600;color:var(--ink);}
.entry-content th,.entry-content td{padding:12px 14px;border-bottom:1px solid var(--line);line-height:1.6;}
.entry-content tbody tr:nth-child(even){background:#FAF9F6;}
.entry-content pre{
  background:#F3F2EE;border:1px solid var(--line);border-radius:var(--r-s);
  padding:16px;overflow-x:auto;font-size:14px;line-height:1.7;
}
.entry-content code{background:#F3F2EE;border-radius:6px;padding:2px 6px;font-size:14px;}
.entry-content a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
.entry-content a:hover{color:var(--brand-600);background:rgba(15,111,99,.06);}
.entry-content hr{border:0;border-top:1px solid var(--line);margin:2em 0;}
.entry-content>*:last-child{margin-bottom:0;}

.empty-state{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:56px 32px;text-align:center;box-shadow:var(--shadow-sm);
}
.empty-state svg{width:48px;height:48px;margin:0 auto 16px;color:var(--brand-700);opacity:.7;}
.empty-state p{font-size:16px;color:var(--ink-2);margin-bottom:20px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:32px 0 0;}
.tag-row .tag{
  display:inline-block;padding:6px 14px;border-radius:999px;border:1px solid var(--line);
  background:var(--surface);font-size:13px;color:var(--ink-2);
}
.tag-row .tag:hover{border-color:var(--brand-700);color:var(--brand-700);}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px;}
.post-nav a{
  display:block;padding:18px 20px;border:1px solid var(--line);border-radius:var(--r-l);
  background:var(--surface);font-size:15px;color:var(--ink);font-weight:600;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.post-nav a:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--brand-100);color:var(--brand-700);}
.post-nav span{display:block;font-size:12px;color:var(--ink-3);font-weight:500;margin-bottom:6px;}

.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:20px;box-shadow:var(--shadow-sm);margin-bottom:20px;
}
.side-card h3{font-size:15px;margin-bottom:14px;color:var(--ink);display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--accent-500);}
.toc-list{border-left:2px solid var(--line);padding-left:0;}
.toc-list a{
  display:block;padding:7px 0 7px 14px;font-size:14px;color:var(--ink-2);line-height:1.6;
  border-left:2px solid transparent;margin-left:-2px;
}
.toc-list a:hover{color:var(--brand-700);}
.toc-list a.current{color:var(--brand-700);font-weight:600;border-left-color:var(--brand-700);}
.rel-mini{display:grid;gap:14px;}
.rel-mini a{display:grid;grid-template-columns:64px 1fr;gap:12px;align-items:center;color:var(--ink);}
.rel-mini img{width:64px;height:44px;object-fit:cover;border-radius:8px;}
.rel-mini strong{font-size:14px;font-weight:600;line-height:1.5;display:block;}
.rel-mini a:hover strong{color:var(--brand-700);}
.sticky-side{position:sticky;top:96px;}

.section{padding:72px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:26px;}
.section-head p{font-size:15px;color:var(--ink-2);margin-top:8px;max-width:640px;}
.link-more{font-size:14px;font-weight:600;color:var(--brand-700);display:inline-flex;align-items:center;gap:6px;}
.link-more svg{width:16px;height:16px;transition:transform .2s var(--ease);}
.link-more:hover svg{transform:translateX(4px);}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.rel-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-l);overflow:hidden;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
.rel-card .thumb{aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,var(--brand-100),var(--accent-100));}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease);}
.rel-card:hover .thumb img{transform:scale(1.04);}
.rel-card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-card h3{font-size:18px;line-height:1.5;}
.rel-card p{font-size:14px;line-height:1.75;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-card .meta{margin-top:auto;font-size:12px;color:var(--ink-3);}

.faq-wrap{max-width:860px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-q:hover{color:var(--brand-700);}
.faq-q svg{width:20px;height:20px;flex-shrink:0;color:var(--ink-3);transition:transform .22s var(--ease);}
.faq-item.open .faq-q svg{transform:rotate(180deg);color:var(--brand-700);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease),opacity .22s var(--ease);opacity:0;}
.faq-item.open .faq-a{opacity:1;}
.faq-a p{font-size:15px;line-height:1.9;color:var(--ink-2);padding:0 0 20px;}

.cta-band{
  margin-top:72px;background:var(--brand-900);border-radius:var(--r-xl);
  padding:44px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  color:#E8F0EE;
}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:10px;}
.cta-band p{font-size:15px;color:rgba(232,240,238,.78);max-width:560px;line-height:1.8;}
.cta-band .btn{flex-shrink:0;}

.site-footer{background:var(--brand-900);color:#E8F0EE;margin-top:96px;padding:64px 0 24px;}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
.footer-brand .brand-text{color:#fff;font-size:19px;font-weight:700;display:inline-block;margin-bottom:14px;}
.footer-brand .brand-text span{color:var(--accent-500);}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(232,240,238,.72);max-width:300px;}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:grid;gap:14px;}
.footer-col a,.footer-col li{font-size:14px;color:rgba(232,240,238,.72);}
.footer-col a:hover{color:var(--accent-500);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:12px;color:rgba(232,240,238,.66);
}
.footer-bottom a{color:rgba(232,240,238,.66);}
.footer-bottom a:hover{color:var(--accent-500);}

.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:60;
  display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 22px;
  background:var(--accent-500);color:var(--ink);font-size:15px;font-weight:600;
  border-radius:999px;box-shadow:var(--shadow-md);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s var(--ease);
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:#f0ae4d;color:var(--ink);}
.float-cta svg{width:16px;height:16px;}

.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.visible{opacity:1;transform:none;}

@media (max-width:1439px){
  .article-layout{gap:32px;}
}
@media (max-width:1199px){
  .search-box{width:160px;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-side{display:none;}
  .article-main{max-width:none;}
}
@media (max-width:991px){
  .container{padding:0 20px;}
  .nav-links,.search-box{display:none;}
  .menu-toggle{display:flex;}
  .header-inner{height:60px;}
  .article-head h1{font-size:29px;}
  .entry-content{padding:28px 24px;}
  .entry-content h2{font-size:23px;}
  .entry-content h3{font-size:19px;}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .section{padding:56px 0 0;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px;margin-top:56px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .site-footer{margin-top:64px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .header-inner{height:56px;}
  .header-actions .btn-ghost{display:none;}
  .article-shell{padding-top:16px;}
  .article-head h1{font-size:25px;}
  .entry-content{font-size:16px;line-height:1.9;padding:22px 18px;border-radius:var(--r-m);}
  .entry-content h2{font-size:21px;}
  .article-cover img{aspect-ratio:16/9;max-height:260px;}
  .rel-grid{grid-template-columns:1fr;}
  .post-nav{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .section{padding:48px 0 0;}
  .float-cta{
    right:0;left:0;bottom:0;width:100%;justify-content:center;
    height:60px;border-radius:0;transform:translateY(100%);
  }
  .float-cta.show{transform:translateY(0);}
  body{padding-bottom:76px;padding-bottom:calc(76px + env(safe-area-inset-bottom));}
  .footer-top{grid-template-columns:1fr 1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:480px){
  .brand-text{font-size:16px;}
  .header-actions .btn-accent{padding:0 14px;font-size:13px;}
  .article-head h1{font-size:22px;}
  .cta-band{padding:26px 20px;}
  .cta-band h2{font-size:21px;}
}

/* roulang page: category1 */
:root{
  --brand-900:#0B3A34;
  --brand-700:#0F6F63;
  --brand-600:#12877A;
  --brand-100:#E7F2F0;
  --brand-50:#F2F8F7;
  --accent-500:#E8A33D;
  --accent-100:#FDF2E0;
  --alert:#C8452F;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E6E4DD;
  --ink:#1E2422;
  --ink-2:#4A5450;
  --ink-3:#7C8783;
  --r-8:8px;
  --r-12:12px;
  --r-16:16px;
  --r-20:20px;
  --r-full:999px;
  --sh-sm:0 1px 2px rgba(11,58,52,.06);
  --sh-md:0 8px 24px -8px rgba(11,58,52,.14);
  --sh-lg:0 24px 60px -24px rgba(11,58,52,.22);
  --ease:cubic-bezier(.2,.8,.2,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-serif:"Source Han Serif SC","Noto Serif SC","Songti SC",serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease);}
a:hover{color:var(--brand-600);}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding-left:1.15em;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:1px solid transparent;background:none;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(232,163,61,.35);
  border-radius:var(--r-8);
}
[id]{scroll-margin-top:84px;}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-full);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--brand-700);color:#fff;}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-sm);}
.btn-primary:active{transform:translateY(0);filter:brightness(.96);}
.btn-ghost{border:1.5px solid var(--brand-700);color:var(--brand-700);background:transparent;}
.btn-ghost:hover{background:rgba(15,111,99,.08);color:var(--brand-700);}
.btn-accent{background:var(--accent-500);color:var(--ink);}
.btn-accent:hover{background:#f0ae4e;color:var(--ink);transform:translateY(-1px);box-shadow:var(--sh-sm);}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,246,242,.86);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
  transition:background-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{background:rgba(247,246,242,.96);box-shadow:var(--sh-sm);}
.header-inner{display:flex;align-items:center;gap:20px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.01em;}
.brand:hover{color:var(--ink);}
.brand-mark{width:24px;height:24px;color:var(--brand-700);display:grid;place-items:center;flex:0 0 auto;}
.brand-text span{color:var(--brand-700);}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:6px;}
.nav-links a{
  position:relative;padding:8px 14px;border-radius:var(--r-8);
  font-size:15px;font-weight:500;color:var(--ink-2);line-height:1.4;
}
.nav-links a:hover{background:var(--brand-50);color:var(--brand-700);}
.nav-links a.active{color:var(--brand-700);font-weight:600;}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--accent-500);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;width:200px;padding:0 14px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-full);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box:focus-within{border-color:var(--brand-700);box-shadow:0 0 0 3px rgba(15,111,99,.12);}
.search-box svg{width:16px;height:16px;color:var(--ink-3);flex:0 0 auto;}
.search-box input{border:0;outline:none;background:transparent;width:100%;font-size:14px;color:var(--ink);}
.search-box input::placeholder{color:var(--ink-3);}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-8);
  align-items:center;justify-content:center;color:var(--ink);
  border:1px solid var(--line);background:var(--surface);
}
.menu-toggle:hover{background:var(--brand-50);color:var(--brand-700);}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,58,52,.45);
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);z-index:90;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(84vw,336px);
  background:var(--surface);z-index:100;
  transform:translateX(102%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:16px 0 24px;overflow-y:auto;
  box-shadow:var(--sh-lg);
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:6px 20px 14px;border-bottom:1px solid var(--line);}
.drawer-head span{font-size:15px;font-weight:700;color:var(--ink);}
.drawer-close{width:36px;height:36px;border-radius:var(--r-8);display:grid;place-items:center;color:var(--ink-2);border:1px solid var(--line);}
.drawer-close:hover{background:var(--brand-50);color:var(--brand-700);}
.drawer-group{padding:16px 20px 4px;}
.drawer-group h4{font-size:12px;letter-spacing:.08em;color:var(--ink-3);font-weight:600;margin-bottom:8px;}
.drawer-group a{
  display:flex;align-items:center;height:48px;padding:0 12px;border-radius:var(--r-8);
  font-size:15px;color:var(--ink-2);border-left:3px solid transparent;
}
.drawer-group a:hover{background:var(--brand-50);color:var(--brand-700);}
.drawer-group a.active{color:var(--brand-700);font-weight:600;border-left-color:var(--brand-700);background:var(--brand-50);}
.drawer-cta{padding:18px 20px 0;display:grid;gap:10px;}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-full);background:var(--bg);}
.drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:22px 0 0;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;padding:0;margin:0;font-size:13px;color:var(--ink-3);}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:var(--line);}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .current{color:var(--ink-3);max-width:24ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 分类页头 ---------- */
.cat-hero{padding:26px 0 8px;}
.cat-hero h1{
  font-family:var(--font-serif);
  font-size:clamp(30px,4vw,40px);
  line-height:1.28;font-weight:700;letter-spacing:.01em;color:var(--ink);
  max-width:22ch;
}
.cat-hero .lede{margin-top:18px;font-size:18px;line-height:1.8;color:var(--ink-2);max-width:62ch;}
.cat-hero .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--r-full);
  background:var(--brand-100);color:var(--brand-700);
  font-size:12.5px;font-weight:600;
}
.chip-accent{background:var(--accent-100);color:#8a5a10;}
.cat-figure{margin-top:32px;border-radius:var(--r-16);overflow:hidden;border:1px solid var(--line);background:var(--surface);}
.cat-figure img{width:100%;aspect-ratio:21/9;object-fit:cover;}

/* ---------- 布局：目录 + 内容 ---------- */
.cat-layout{
  display:grid;grid-template-columns:280px minmax(0,1fr);
  gap:48px;padding:56px 0 88px;align-items:start;
}
.toc{position:sticky;top:96px;}
.toc h2{font-size:12px;letter-spacing:.1em;font-weight:600;color:var(--ink-3);margin-bottom:14px;}
.toc ul{list-style:none;padding:0;margin:0;border-left:2px solid var(--line);}
.toc a{
  display:block;padding:9px 0 9px 16px;margin-left:-2px;
  border-left:2px solid transparent;
  font-size:14px;color:var(--ink-2);line-height:1.5;
}
.toc a:hover{color:var(--brand-700);background:var(--brand-50);}
.toc a.active{color:var(--brand-700);font-weight:600;border-left-color:var(--brand-700);}
.toc-note{
  margin-top:22px;padding:16px;border-radius:var(--r-12);
  background:var(--brand-50);border:1px solid var(--line);
  font-size:13px;line-height:1.75;color:var(--ink-2);
}
.toc-note strong{display:block;color:var(--brand-700);font-size:13px;margin-bottom:6px;}

/* ---------- 内容块 ---------- */
.content-block{max-width:760px;}
.content-block + .content-block{margin-top:64px;}
.section-title{
  font-size:26px;line-height:1.4;font-weight:700;color:var(--ink);
  margin-bottom:20px;padding-left:14px;border-left:4px solid var(--accent-500);
}
.content-block p{font-size:16.5px;line-height:1.9;color:var(--ink-2);}
.content-block p+p{margin-top:1.1em;}
.content-block p strong{color:var(--ink);}

/* 要点卡 */
.point-list{display:grid;gap:14px;margin-top:24px;}
.point-card{
  display:flex;gap:18px;padding:20px 22px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-16);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.point-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:#dcd9d0;}
.point-icon{
  flex:0 0 auto;width:44px;height:44px;border-radius:var(--r-12);
  display:grid;place-items:center;background:var(--brand-100);color:var(--brand-700);
}
.point-icon svg{width:22px;height:22px;}
.point-card h3{font-size:17px;font-weight:600;color:var(--ink);line-height:1.55;}
.point-card p{margin-top:6px;font-size:15px;line-height:1.8;color:var(--ink-2);}

/* 表格 */
.table-wrap{margin-top:24px;overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-12);background:var(--surface);}
table{width:100%;border-collapse:collapse;min-width:620px;}
thead th{
  background:var(--brand-50);color:var(--ink);font-size:14px;font-weight:600;text-align:left;
  padding:14px 18px;border-bottom:1px solid var(--line);
}
tbody td{
  padding:14px 18px;font-size:14.5px;line-height:1.7;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
tbody tr:nth-child(even){background:#FAF9F6;}
tbody tr:last-child td{border-bottom:0;}
tbody td:first-child{color:var(--ink);font-weight:600;}

/* 图卡 */
.figure-card{margin-top:26px;border-radius:var(--r-16);overflow:hidden;border:1px solid var(--line);background:var(--surface);}
.figure-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.figure-card figcaption{padding:14px 18px;font-size:13px;color:var(--ink-3);line-height:1.7;}

/* 流程 */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:28px;position:relative;}
.flow-step{position:relative;padding:0 16px 0 0;}
.flow-step::before{
  content:"";position:absolute;top:16px;left:34px;right:-6px;height:0;
  border-top:2px dashed #CFDCD9;
}
.flow-step:last-child::before{display:none;}
.flow-dot{
  position:relative;z-index:1;width:34px;height:34px;border-radius:50%;
  background:var(--brand-700);color:#fff;font-size:14px;font-weight:700;
  display:grid;place-items:center;
}
.flow-step h3{margin-top:14px;font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;}
.flow-step p{margin-top:6px;font-size:14px;line-height:1.75;color:var(--ink-2);}

/* 误区提示 */
.myth{
  display:flex;gap:14px;margin-top:14px;padding:18px 20px;
  background:var(--accent-100);border-radius:var(--r-12);border:1px solid #F3E3C6;
}
.myth svg{flex:0 0 auto;width:20px;height:20px;color:#9a6410;margin-top:2px;}
.myth div h3{font-size:16px;font-weight:600;color:#6f4708;line-height:1.55;}
.myth div p{margin-top:6px;font-size:14.5px;line-height:1.8;color:#8a5a10;}

/* FAQ */
.faq{max-width:760px;margin-top:22px;}
.faq details{border-bottom:1px solid var(--line);}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
  cursor:pointer;list-style:none;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary svg{width:20px;height:20px;color:var(--brand-700);flex:0 0 auto;transition:transform .22s var(--ease);}
.faq details[open] summary svg{transform:rotate(180deg);}
.faq .faq-body{padding:0 0 20px;font-size:15px;line-height:1.9;color:var(--ink-2);}

/* 双卡 */
.dual-cards{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:24px;}
.link-card{
  display:block;padding:26px 24px;border:1.5px solid var(--line);border-radius:var(--r-16);
  background:var(--surface);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.link-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:var(--brand-700);}
.link-card h3{font-size:18px;font-weight:700;color:var(--ink);line-height:1.5;}
.link-card p{margin-top:8px;font-size:14.5px;line-height:1.8;color:var(--ink-2);}
.link-card .arrow{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-size:14px;font-weight:600;color:var(--brand-700);
}
.link-card .arrow svg{width:16px;height:16px;transition:transform .2s var(--ease);}
.link-card:hover .arrow svg{transform:translateX(4px);}

/* CTA 条 */
.cta-bar{
  margin:64px 0 0;background:var(--brand-900);border-radius:var(--r-20);
  padding:40px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-bar h2{font-size:26px;line-height:1.4;font-weight:700;color:#F1F7F6;}
.cta-bar p{margin-top:10px;font-size:15px;line-height:1.8;color:rgba(232,240,238,.78);max-width:46ch;}
.cta-bar .btn{flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:#E8F0EE;padding:64px 0 24px;margin-top:96px;}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.footer-brand .brand-text{font-size:19px;font-weight:700;color:#fff;letter-spacing:.01em;}
.footer-brand .brand-text span{color:var(--accent-500);}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.85;color:rgba(232,240,238,.72);max-width:32ch;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul{list-style:none;padding:0;margin:0;display:grid;gap:14px;}
.footer-col a,.footer-col li{font-size:14px;color:rgba(232,240,238,.76);line-height:1.6;}
.footer-col a:hover{color:var(--accent-500);text-decoration:underline;text-underline-offset:3px;}
.footer-col+.footer-col{border-left:1px solid rgba(255,255,255,.12);padding-left:32px;}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12px;color:rgba(232,240,238,.66);
}
.footer-bottom a{color:rgba(232,240,238,.66);}
.footer-bottom a:hover{color:var(--accent-500);}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:inline-flex;align-items:center;gap:8px;
  height:52px;padding:0 24px;border-radius:var(--r-full);
  background:var(--brand-700);color:#fff;font-size:15px;font-weight:600;
  box-shadow:var(--sh-md);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s var(--ease),background-color .2s var(--ease);
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--brand-600);color:#fff;}
.float-cta svg{width:16px;height:16px;}
.mobile-bar{display:none;}

/* ---------- 滚动显现 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .search-box{width:160px;}
  .cat-layout{gap:36px;grid-template-columns:250px minmax(0,1fr);}
}
@media (max-width:991px){
  .container{padding:0 20px;}
  .header-inner{height:60px;}
  .nav-links{display:none;}
  .search-box{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-actions .btn-ghost{display:none;}
  .cat-layout{grid-template-columns:1fr;gap:24px;padding:36px 0 64px;}
  .toc{position:static;top:auto;}
  .toc h2{margin-bottom:10px;}
  .toc ul{display:flex;flex-wrap:nowrap;gap:8px;overflow-x:auto;border-left:0;padding-bottom:6px;}
  .toc a{
    margin-left:0;white-space:nowrap;border-left:0;border:1px solid var(--line);
    border-radius:var(--r-full);padding:8px 14px;background:var(--surface);
  }
  .toc a.active{border-color:var(--brand-700);background:var(--brand-100);}
  .toc-note{display:none;}
  .content-block{max-width:100%;}
  .footer-top{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
  .footer-col+.footer-col{border-left:0;padding-left:0;}
  .flow{grid-template-columns:1fr 1fr;gap:24px;}
  .flow-step{padding:0;}
  .flow-step::before{display:none;}
  .cat-layout{padding-top:32px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .header-inner{height:56px;}
  .brand{font-size:16px;}
  .cat-hero h1{font-size:30px;}
  .cat-hero .lede{font-size:16px;}
  .cat-figure img{aspect-ratio:16/10;}
  .section-title{font-size:22px;}
  .content-block+.content-block{margin-top:48px;}
  .dual-cards{grid-template-columns:1fr;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:32px 24px;gap:22px;}
  .cta-bar h2{font-size:22px;}
  .flow{grid-template-columns:1fr;}
  .site-footer{padding:48px 0 96px;margin-top:64px;}
  .footer-top{gap:28px;}
  .float-cta{display:none;}
  .mobile-bar{
    display:flex;align-items:center;gap:12px;
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    padding:8px 16px calc(8px + env(safe-area-inset-bottom));
    background:rgba(255,255,255,.96);border-top:1px solid var(--line);
    box-shadow:0 -1px 2px rgba(11,58,52,.06);
  }
  .mobile-bar .btn{flex:1;}
  .mobile-bar .to-top{
    flex:0 0 auto;width:44px;height:44px;border-radius:var(--r-12);
    border:1px solid var(--line);display:grid;place-items:center;color:var(--brand-700);background:var(--surface);
  }
  .mobile-bar .to-top:hover{background:var(--brand-50);}
}
@media (max-width:480px){
  .cat-hero h1{font-size:28px;}
  .header-actions .btn-accent{padding:0 16px;font-size:14px;}
  .footer-top{grid-template-columns:1fr;}
  .point-card{padding:18px;gap:14px;}
}

/* roulang page: category2 */
:root{
  --brand-900:#0B3A34;
  --brand-700:#0F6F63;
  --brand-600:#12877A;
  --brand-100:#E7F2F0;
  --brand-50:#F2F8F7;
  --accent-500:#E8A33D;
  --accent-100:#FDF2E0;
  --accent-ink:#8A5A12;
  --alert:#C8452F;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E6E4DD;
  --ink:#1E2422;
  --ink-2:#4A5450;
  --ink-3:#7C8783;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:20px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(11,58,52,.06);
  --sh-md:0 8px 24px -8px rgba(11,58,52,.14);
  --sh-lg:0 24px 60px -24px rgba(11,58,52,.22);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-serif:"Source Han Serif SC","Noto Serif SC","Songti SC",serif;
  --ease:cubic-bezier(.2,.8,.2,1);
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease);}
a:hover{color:var(--brand-600);}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(232,163,61,.35);border-radius:6px;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:27px;line-height:1.4;font-weight:700;letter-spacing:.01em;}
.section-head p{margin-top:12px;font-size:16px;line-height:1.85;color:var(--ink-2);}
.tabular{font-variant-numeric:tabular-nums;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(247,246,242,.86);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
  transition:background-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.scrolled{background:rgba(247,246,242,.97);box-shadow:var(--sh-sm);}
.nav-wrap{display:flex;align-items:center;gap:18px;height:var(--nav-h);}
.brand{display:flex;align-items:center;gap:10px;color:var(--brand-700);flex-shrink:0;}
.brand-mark{width:24px;height:24px;flex-shrink:0;}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.01em;color:var(--ink);white-space:nowrap;}
.brand-text span{color:var(--brand-700);}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  white-space:nowrap;
}
.nav-links a:hover{background:var(--brand-50);color:var(--brand-700);}
.nav-links a.active{color:var(--brand-700);}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--accent-500);border-radius:2px;
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{position:relative;}
.search-box input{
  width:200px;height:38px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;
  padding:0 16px;font-size:14px;color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box input::placeholder{color:var(--ink-3);}
.search-box input:focus{outline:none;border-color:var(--brand-700);box-shadow:0 0 0 3px rgba(15,111,99,.14);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  border:1.5px solid transparent;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn svg{width:16px;height:16px;flex-shrink:0;}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-primary{background:var(--brand-700);color:#fff;}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-sm);}
.btn-primary:active{transform:none;filter:brightness(.96);}
.btn-ghost{border-color:var(--brand-700);color:var(--brand-700);background:transparent;}
.btn-ghost:hover{background:rgba(15,111,99,.08);color:var(--brand-700);}
.btn-ghost:active{transform:none;background:rgba(15,111,99,.14);}
.btn-accent{background:var(--accent-500);color:var(--ink);}
.btn-accent:hover{background:#F0AE4C;color:var(--ink);transform:translateY(-1px);box-shadow:var(--sh-sm);}
.btn-accent:active{transform:none;filter:brightness(.96);}
.btn:disabled,.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-sm);
  align-items:center;justify-content:center;color:var(--ink-2);
}
.menu-toggle:hover{background:var(--brand-50);color:var(--brand-700);}
.menu-toggle svg{width:22px;height:22px;}

/* ---------- Drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:90;
  background:rgba(11,58,52,.45);
  opacity:0;pointer-events:none;transition:opacity .3s var(--ease);
}
.drawer-mask.show{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;z-index:100;
  width:min(84vw,336px);height:100%;
  background:var(--surface);padding:20px 16px 28px;
  transform:translateX(100%);transition:transform .3s var(--ease);
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:4px 8px 16px;border-bottom:1px solid var(--line);}
.drawer-head span{font-size:16px;font-weight:700;}
.drawer-close{width:36px;height:36px;border-radius:var(--r-sm);display:flex;align-items:center;justify-content:center;color:var(--ink-2);}
.drawer-close:hover{background:var(--brand-50);color:var(--brand-700);}
.drawer-close svg{width:18px;height:18px;}
.drawer-group{padding:18px 0 6px;}
.drawer-group h4{font-size:13px;font-weight:600;color:var(--ink-3);letter-spacing:.06em;padding:0 12px 8px;}
.drawer-link{
  display:flex;align-items:center;height:48px;padding:0 12px;
  border-radius:var(--r-sm);font-size:15px;color:var(--ink-2);
}
.drawer-link:hover{background:var(--brand-50);color:var(--brand-700);}
.drawer-link.active{background:var(--brand-50);color:var(--brand-700);box-shadow:inset 3px 0 0 var(--brand-700);}
.drawer-search{width:100%;height:44px;border-radius:var(--r-md);border:1px solid var(--line);padding:0 14px;font-size:15px;}
.drawer-search:focus{outline:none;border-color:var(--brand-700);box-shadow:0 0 0 3px rgba(15,111,99,.14);}
.drawer-actions{display:grid;gap:12px;padding:16px 4px 0;}
body.drawer-open{overflow:hidden;}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;
  padding:44px 0 56px;
  background:linear-gradient(115deg,rgba(11,58,52,.94),rgba(15,111,99,.86)),url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  color:#F4FAF8;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 82% 18%,rgba(232,163,61,.22),transparent 58%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(228,240,236,.78);}
.crumb a{color:rgba(228,240,236,.9);}
.crumb a:hover{color:var(--accent-500);}
.crumb .sep{opacity:.55;}
.crumb .current{color:rgba(244,250,248,.98);}
.page-hero h1{
  margin-top:18px;
  font-family:var(--font-serif);
  font-size:38px;line-height:1.28;font-weight:700;letter-spacing:.012em;
  max-width:820px;
}
.page-hero .lead{
  margin-top:16px;max-width:720px;
  font-size:18px;line-height:1.8;color:rgba(233,243,239,.9);
}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 18px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.38);
  background:rgba(255,255,255,.06);
  color:rgba(240,248,245,.92);
  font-size:14px;font-weight:500;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.chip:hover{border-color:#fff;color:#fff;transform:translateY(-1px);}
.chip.active{background:#fff;border-color:#fff;color:var(--brand-700);}
.chip .dot{width:7px;height:7px;border-radius:50%;background:var(--accent-500);flex-shrink:0;}

/* ---------- Category layout ---------- */
.cat-section{padding:64px 0 8px;}
.cat-layout{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:start;}
.cat-main{grid-column:span 8;}
.cat-aside{grid-column:span 4;}
.aside-sticky{position:sticky;top:96px;}
.flow-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.flow-card{
  display:flex;flex-direction:column;gap:14px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:24px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.flow-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:#DBD8CE;}
.flow-grid .flow-card:nth-child(even){margin-top:32px;}
.flow-thumb{
  border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/10;
  background:linear-gradient(135deg,var(--brand-100),var(--accent-100));
}
.flow-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease);}
.flow-card:hover .flow-thumb img{transform:scale(1.04);}
.flow-meta{display:flex;align-items:center;gap:10px;}
.num-badge{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:34px;height:22px;padding:0 9px;border-radius:var(--r-pill);
  background:var(--accent-100);color:var(--accent-ink);
  font-size:12px;font-weight:700;font-variant-numeric:tabular-nums;
}
.tag-badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;
  border-radius:var(--r-pill);background:var(--brand-100);color:var(--brand-700);
  font-size:12px;font-weight:500;
}
.flow-card h3{font-size:19px;line-height:1.5;font-weight:700;}
.flow-card .desc{font-size:15px;line-height:1.85;color:var(--ink-2);}
.flow-points{display:grid;gap:8px;}
.flow-points li{
  position:relative;padding-left:20px;font-size:14px;line-height:1.8;color:var(--ink-2);
}
.flow-points li::before{
  content:"";position:absolute;left:2px;top:.65em;
  width:7px;height:7px;border-radius:2px;background:var(--brand-700);opacity:.75;
}
.card-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:auto;
  font-size:14px;font-weight:600;color:var(--brand-700);
}
.card-link svg{width:15px;height:15px;transition:transform .2s var(--ease);}
.card-link:hover svg{transform:translateX(4px);}

/* ---------- Quick card ---------- */
.quick-card{
  background:var(--brand-50);
  border:2px solid var(--brand-700);
  border-radius:var(--r-xl);
  padding:24px;
  box-shadow:var(--sh-sm);
}
.quick-card h3{font-size:18px;font-weight:700;line-height:1.5;}
.quick-card .sub{margin-top:8px;font-size:14px;line-height:1.8;color:var(--ink-2);}
.quick-list{display:grid;gap:14px;margin:22px 0;}
.quick-list li{display:flex;gap:12px;font-size:14.5px;line-height:1.8;color:var(--ink-2);}
.quick-list .idx{
  flex-shrink:0;width:22px;height:22px;border-radius:50%;
  background:var(--brand-700);color:#fff;
  font-size:12px;font-weight:700;font-variant-numeric:tabular-nums;
  display:flex;align-items:center;justify-content:center;margin-top:3px;
}
.quick-card .btn{width:100%;}
.quick-note{margin-top:14px;font-size:12px;color:var(--ink-3);text-align:center;}

/* ---------- Checklist band ---------- */
.band{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:72px 0;}
.band-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.band-item{
  background:var(--brand-50);border-radius:var(--r-lg);padding:24px;
  border:1px solid transparent;transition:background-color .2s var(--ease),transform .2s var(--ease);
}
.band-item:hover{background:var(--brand-100);transform:translateY(-2px);}
.band-item .num{
  font-size:30px;font-weight:700;color:var(--brand-700);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.band-item h3{margin-top:10px;font-size:18px;font-weight:700;line-height:1.5;}
.band-item p{margin-top:8px;font-size:14.5px;line-height:1.8;color:var(--ink-2);}

/* ---------- Mini question bars ---------- */
.q-bars{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.q-bar{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:18px 20px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-lg);
  font-size:15px;font-weight:600;color:var(--ink);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.q-bar span{line-height:1.6;}
.q-bar svg{width:18px;height:18px;flex-shrink:0;color:var(--accent-500);transition:transform .2s var(--ease);}
.q-bar:hover{transform:translateY(-2px);box-shadow:var(--sh-md);color:var(--brand-700);border-color:#DBD8CE;}
.q-bar:hover svg{transform:translateY(3px);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;font-size:17px;font-weight:600;line-height:1.6;
  cursor:pointer;list-style:none;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-700);}
.faq-item summary .arrow{
  flex-shrink:0;width:20px;height:20px;color:var(--ink-3);
  transition:transform .22s var(--ease),color .22s var(--ease);
}
.faq-item[open] summary .arrow{transform:rotate(180deg);color:var(--accent-500);}
.faq-item .answer{padding:0 0 22px;font-size:15px;line-height:1.9;color:var(--ink-2);max-width:760px;}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--brand-900);color:#E8F0EE;
  padding:72px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;}
.cta-inner h2{font-size:30px;line-height:1.35;font-weight:700;color:#F4FAF8;}
.cta-inner p{margin-top:12px;font-size:15.5px;line-height:1.8;color:rgba(232,240,238,.82);max-width:560px;}
.cta-points{display:flex;flex-wrap:wrap;gap:20px;margin-top:20px;}
.cta-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(232,240,238,.86);}
.cta-points .tick{width:16px;height:16px;color:var(--accent-500);flex-shrink:0;}

/* ---------- Footer ---------- */
.site-footer{background:var(--brand-900);color:#E8F0EE;padding:64px 0 24px;}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px;}
.footer-brand .brand-text{color:#F4FAF8;font-size:18px;font-weight:700;display:inline-block;}
.footer-brand .brand-text span{color:var(--accent-500);}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(232,240,238,.74);max-width:320px;}
.footer-col h4{font-size:14px;font-weight:600;color:#F4FAF8;margin-bottom:16px;}
.footer-col ul{display:grid;gap:14px;}
.footer-col li{font-size:14px;color:rgba(232,240,238,.72);}
.footer-col a{font-size:14px;color:rgba(232,240,238,.82);}
.footer-col a:hover{color:var(--accent-500);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid rgba(255,255,255,.12);padding-top:22px;
  font-size:12px;color:rgba(232,240,238,.66);
}
.footer-bottom a{color:rgba(232,240,238,.66);}
.footer-bottom a:hover{color:var(--accent-500);}

/* ---------- Floating CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:60;
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-pill);
  background:var(--accent-500);color:var(--ink);
  font-size:15px;font-weight:600;
  box-shadow:var(--sh-md);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease),background-color .2s var(--ease);
}
.float-cta svg{width:16px;height:16px;}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{background:#F0AE4C;color:var(--ink);}
.mobile-bar{display:none;}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------- Responsive ---------- */
@media (max-width:1439px){
  .container{padding:0 24px;}
}
@media (max-width:1199px){
  .search-box input{width:160px;}
  .flow-grid{gap:20px;}
}
@media (max-width:991px){
  :root{--nav-h:60px;}
  .nav-links{display:none;}
  .search-box{display:none;}
  .menu-toggle{display:flex;}
  .page-hero{padding:32px 0 44px;}
  .page-hero h1{font-size:32px;}
  .page-hero .lead{font-size:16.5px;}
  .cat-layout{grid-template-columns:1fr;}
  .cat-main,.cat-aside{grid-column:span 12;}
  .aside-sticky{position:static;margin-bottom:28px;}
  .flow-grid{grid-template-columns:1fr;}
  .flow-grid .flow-card:nth-child(even){margin-top:0;}
  .band-grid{grid-template-columns:1fr;}
  .q-bars{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:span 2;}
  .section{padding:64px 0;}
}
@media (max-width:767px){
  :root{--nav-h:56px;}
  body{padding-bottom:76px;}
  .container{padding:0 16px;}
  .brand-text{font-size:16px;}
  .page-hero h1{font-size:30px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:28px;}
  .section-head h2{font-size:23px;}
  .band{padding:48px 0;}
  .cta-band{padding:56px 0;}
  .cta-inner h2{font-size:24px;}
  .float-cta{display:none;}
  .mobile-bar{
    display:flex;align-items:center;gap:12px;
    position:fixed;left:0;right:0;bottom:0;z-index:65;
    height:60px;padding:0 16px calc(env(safe-area-inset-bottom));
    background:rgba(255,255,255,.96);
    border-top:1px solid var(--line);
    box-shadow:0 -1px 2px rgba(11,58,52,.06);
  }
  .mobile-bar .btn{flex:1;}
  .to-top{
    width:44px;height:44px;border-radius:var(--r-pill);
    border:1.5px solid var(--line);display:flex;align-items:center;justify-content:center;
    color:var(--ink-2);background:#fff;flex-shrink:0;
  }
  .to-top:hover{border-color:var(--brand-700);color:var(--brand-700);}
  .to-top svg{width:18px;height:18px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:24px;}
  .footer-brand{grid-column:span 2;}
}
@media (max-width:480px){
  .page-hero h1{font-size:28px;}
  .hero-chips{gap:8px;}
  .chip{height:34px;padding:0 14px;font-size:13px;}
  .btn-lg{height:48px;padding:0 20px;font-size:15px;}
  .flow-card{padding:20px;}
  .footer-top{grid-template-columns:1fr;}
  .footer-brand{grid-column:span 1;}
}