/* roulang page: index */
:root{
  --ink-900:#14110F;
  --ink-700:#2E2A26;
  --ink-500:#6B645C;
  --line:#E7E1D9;
  --bg:#FAF7F2;
  --bg-alt:#F3EDE4;
  --surface:#FFFFFF;
  --primary:#E4572E;
  --primary-hover:#C8461F;
  --primary-active:#A93A17;
  --primary-soft:#FDEBE4;
  --accent:#2FA79A;
  --accent-soft:rgba(47,167,154,.10);
  --highlight:#F2B544;
  --danger:#C0392B;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --shadow-1:0 1px 2px rgba(20,17,15,.05);
  --shadow-2:0 12px 28px -12px rgba(20,17,15,.18);
  --nav-h:64px;
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--ink-700);
  background:var(--bg);
  letter-spacing:0;
  text-align:left;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.35}
h1{font-weight:800;line-height:1.25}
h2{font-size:28px}
h3{font-size:20px;font-weight:600;line-height:1.45}
h4{font-size:17px;font-weight:600;line-height:1.5}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:var(--primary-soft);color:var(--ink-900)}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 clamp(20px,4vw,40px)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;border:1px solid transparent;
  transition:transform var(--ease),background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
  white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--primary),#F0834F);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:linear-gradient(135deg,var(--primary-hover),#D9702F);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{background:linear-gradient(135deg,var(--primary-active),#BC5F26);transform:translateY(0)}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink-900)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0);color:var(--accent)}
.btn-sm{min-height:40px;padding:0 18px;font-size:15px}
.btn-block{width:100%}
.btn[disabled]{opacity:.6;cursor:not-allowed;transform:none}
.text-link{display:inline-flex;align-items:center;gap:4px;color:var(--accent);font-weight:600;font-size:15px;min-height:44px}
.text-link span{transition:transform var(--ease)}
.text-link:hover span{transform:translateX(2px)}
.text-link:hover{text-decoration:underline}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12px;line-height:1.4;
  letter-spacing:.04em;font-weight:600;
}
.badge-accent{background:var(--accent-soft);color:#1F7C72}
.badge-soft{background:var(--primary-soft);color:var(--primary-active)}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:999px;border:1px solid var(--line);
  background:var(--surface);font-size:14px;color:var(--ink-700);
}
.pill svg{width:16px;height:16px;flex:none;color:var(--accent)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;height:var(--nav-h);
  background:rgba(250,247,242,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 8px 20px -18px rgba(20,17,15,.5)}
.nav-inner{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:20px}
.nav-left{display:flex;align-items:center;gap:32px;min-width:0}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),#F0834F);
  color:#fff;font-size:17px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{font-size:17px;font-weight:800;color:var(--ink-900);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;font-size:15px;color:var(--ink-700);
  padding:6px 2px;transition:color var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.nav-link:hover{color:var(--primary)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px;flex:none}
.icon-btn{
  width:44px;height:44px;border-radius:var(--r-btn);
  display:flex;align-items:center;justify-content:center;
  border:1px solid transparent;color:var(--ink-700);
  transition:border-color var(--ease),color var(--ease),background var(--ease);
}
.icon-btn:hover{border-color:var(--line);color:var(--accent);background:var(--surface)}
.icon-btn svg{width:20px;height:20px}
.hamburger{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--surface);
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 抽屉 ---------- */
.drawer-backdrop{
  position:fixed;inset:0;background:rgba(20,17,15,.45);z-index:70;
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
}
.drawer-backdrop.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);z-index:80;
  background:var(--surface);padding:24px;overflow-y:auto;
  display:flex;flex-direction:column;gap:6px;
  transform:translateX(100%);transition:transform 220ms ease-out;
  box-shadow:-18px 0 40px -24px rgba(20,17,15,.45);
}
.drawer.is-open{transform:translateX(0)}
.drawer h4{font-size:13px;letter-spacing:.04em;color:var(--ink-500);margin:16px 0 6px;font-weight:600}
.drawer a{display:block;padding:12px 10px;border-radius:var(--r-btn);font-size:16px;color:var(--ink-700)}
.drawer a:hover{background:var(--bg-alt);color:var(--primary)}
.drawer .btn{margin-top:18px}

/* ---------- Hero ---------- */
.hero{padding:52px 0 80px;background:var(--bg)}
.hero-grid{display:grid;grid-template-columns:5.5fr 6.5fr;gap:48px;align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--accent);background:var(--accent-soft);
  padding:6px 14px;border-radius:999px;margin-bottom:20px;
}
.hero-title{font-size:clamp(30px,4.2vw,44px);font-weight:800;line-height:1.25;margin-bottom:20px}
.hero-sub{font-size:17px;line-height:1.9;color:var(--ink-700);max-width:34em;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.hero-badges li{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:999px;border:1px solid var(--line);
  background:var(--surface);font-size:14px;color:var(--ink-700);
}
.hero-badges li::before{
  content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);flex:none;
}
.hero-visual{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-2)}
.hero-visual img{width:100%;height:420px;object-fit:cover;border-radius:0}
.hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(20,17,15,.78) 0%,rgba(20,17,15,.34) 45%,rgba(20,17,15,0) 82%);
  pointer-events:none;
}
.hero-float{
  position:absolute;left:24px;bottom:24px;max-width:270px;
  background:rgba(255,255,255,.96);border-radius:var(--r-card);
  padding:16px 18px;box-shadow:var(--shadow-2);
}
.hero-float strong{display:flex;align-items:center;gap:8px;font-size:15px;color:var(--ink-900)}
.hero-float strong::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent)}
.hero-float p{font-size:13px;line-height:1.7;color:var(--ink-500);margin-top:6px}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  flex-wrap:wrap;margin-bottom:12px;
}
.section-title{margin-bottom:14px}
.section-sub{font-size:16px;line-height:1.9;color:var(--ink-500);max-width:46em}

/* ---------- 三步上手 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px}
.step{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:28px 24px;box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#DCD4C9}
.step-num{
  width:38px;height:38px;border-radius:999px;border:1px solid var(--primary);
  color:var(--primary);font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.step h3{margin-bottom:10px}
.step p{font-size:15px;line-height:1.85;color:var(--ink-500)}
.step:not(:last-child)::after{
  content:"";position:absolute;top:46px;right:-16px;width:8px;height:2px;
  background:repeating-linear-gradient(90deg,var(--line) 0 4px,transparent 4px 8px);
}

/* ---------- 交错图文 ---------- */
.zig-row{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  margin-top:48px;
}
.zig-row.reverse .zig-media{order:2}
.zig-media{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);border:1px solid var(--line)}
.zig-media img{width:100%;height:320px;object-fit:cover;border-radius:0}
.zig-body h3{font-size:22px;margin-bottom:14px}
.zig-body p{color:var(--ink-500);margin-bottom:14px}
.check-list li{
  position:relative;padding-left:22px;margin-bottom:12px;
  font-size:15px;line-height:1.85;color:var(--ink-700);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;
  border-radius:50%;background:var(--accent);
}

/* ---------- 最新信息（CMS 列表） ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px}
.post-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#DCD4C9}
.post-card-link{display:block;height:100%}
.post-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt)}
.post-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:20px 20px 22px}
.post-title{
  font-size:19px;font-weight:600;line-height:1.5;color:var(--ink-900);
  margin:12px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-excerpt{
  font-size:14px;line-height:1.8;color:var(--ink-500);margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-500);
  border-top:1px solid var(--line);padding-top:14px;
}
.post-arrow{color:var(--primary);font-size:16px;transition:transform var(--ease)}
.post-card:hover .post-arrow{transform:translateX(3px)}
.empty-state{
  margin-top:32px;padding:56px 24px;text-align:center;
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-state .empty-icon{
  width:48px;height:48px;margin:0 auto 14px;border-radius:999px;
  background:var(--bg-alt);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:20px;
}
.empty-state p{font-size:15px;color:var(--ink-500)}

/* ---------- 案例证明 ---------- */
.proof-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:36px}
.proof-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease);
}
.proof-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.proof-card h3{font-size:18px;margin-bottom:10px}
.proof-card p{font-size:15px;line-height:1.85;color:var(--ink-500)}
.proof-wide{
  display:grid;grid-template-columns:1fr 1.1fr;gap:0;
  margin-top:24px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);
}
.proof-wide-media{overflow:hidden}
.proof-wide-media img{width:100%;height:100%;min-height:280px;object-fit:cover;border-radius:0}
.proof-wide-body{padding:32px}
.proof-wide-body h3{font-size:22px;margin-bottom:12px}
.proof-wide-body p{font-size:15px;line-height:1.85;color:var(--ink-500);margin-bottom:16px}
.stat-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  margin-top:32px;padding:28px;border-radius:var(--r-card);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.stat-item strong{
  display:block;font-size:30px;font-weight:800;line-height:1.2;
  color:var(--highlight);font-family:system-ui,sans-serif;
}
.stat-item span{display:block;font-size:14px;color:var(--ink-500);margin-top:6px;line-height:1.7}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:36px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  border-left:3px solid transparent;overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item[open]{border-left-color:var(--primary);box-shadow:var(--shadow-1)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.6;
  min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:none;font-size:20px;line-height:1;color:var(--primary);
  transition:transform var(--ease);
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg)}
.faq-answer{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--ink-500)}

/* ---------- 立即开通 ---------- */
.cta-band{background:var(--ink-900);padding:96px 0}
.cta-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:56px;align-items:start}
.cta-band h2{color:#fff;margin-bottom:16px}
.cta-band .cta-lead{color:rgba(255,255,255,.72);font-size:16px;line-height:1.9;margin-bottom:24px}
.cta-points li{
  position:relative;padding-left:22px;margin-bottom:12px;
  font-size:15px;color:rgba(255,255,255,.78);line-height:1.8;
}
.cta-points li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;
  border-radius:50%;background:var(--primary);
}
.form-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);padding:28px;
}
.form-grid{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;color:rgba(255,255,255,.82)}
.field input,.field select,.field textarea{
  height:48px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);color:#fff;
  padding:0 14px;transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.field select option{color:var(--ink-900)}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.42)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(47,167,154,.28);
}
.form-error{font-size:13px;color:#F08C7B}
.form-ok{
  margin-top:18px;padding:14px 16px;border-radius:var(--r-btn);
  background:rgba(47,167,154,.16);border:1px solid rgba(47,167,154,.45);
  color:#8FE3D8;font-size:14px;line-height:1.7;
}
.form-actions{margin-top:22px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.form-note{font-size:13px;color:rgba(255,255,255,.5);line-height:1.7}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 24px;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{width:32px;height:32px;font-size:16px}
.footer-brand span{color:#fff;font-weight:800;font-size:16px}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:30em}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.footer-list li{margin-bottom:10px}
.footer-list a{font-size:14px;color:rgba(255,255,255,.7);transition:color var(--ease)}
.footer-list a:hover{color:var(--highlight);text-decoration:underline}
.footer-contact{font-size:14px;line-height:1.9;color:rgba(255,255,255,.7)}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-grid{gap:36px}
  .hero-visual img{height:380px}
}
@media (max-width:1023px){
  :root{--nav-h:60px}
  .nav-links{display:none}
  .hamburger{display:flex}
  .section{padding:72px 0}
  .cta-band{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-visual{order:1}
  .hero-copy{order:2}
  .hero-visual img{height:340px}
  .steps{grid-template-columns:1fr;gap:16px}
  .step:not(:last-child)::after{display:none}
  .step{padding-left:60px}
  .step-num{position:absolute;left:20px;top:26px;margin:0}
  .zig-row{grid-template-columns:1fr;gap:24px}
  .zig-row.reverse .zig-media{order:0}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .proof-wide{grid-template-columns:1fr}
  .proof-wide-media img{min-height:220px}
  .stat-bar{grid-template-columns:repeat(2,1fr)}
  .faq-grid{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  h2{font-size:24px}
  .section{padding:56px 0}
  .cta-band{padding:56px 0}
  .hero{padding:32px 0 56px}
  .hero-visual img{height:200px}
  .hero-float{left:14px;right:14px;bottom:14px;max-width:none}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .post-grid{grid-template-columns:1fr}
  .proof-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .proof-wide-body{padding:24px}
  .form-card{padding:20px}
  .site-footer{padding:48px 0 20px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .stat-bar{grid-template-columns:1fr 1fr;padding:20px}
}
@media (max-width:480px){
  .container{padding:0 16px}
  .hero-title{font-size:30px}
  .brand-text{font-size:15px}
  .stat-item strong{font-size:24px}
  .hero-badges li{font-size:13px;padding:7px 12px}
  .footer-bottom{flex-direction:column}
}

/* roulang page: article */
/* ===================== 设计令牌 ===================== */
:root{
  --ink-900:#14110F;
  --ink-700:#2E2A26;
  --ink-500:#6B645C;
  --line:#E7E1D9;
  --bg:#FAF7F2;
  --bg-alt:#F3EDE4;
  --surface:#FFFFFF;
  --primary:#E4572E;
  --primary-hover:#C8461F;
  --primary-active:#A93A17;
  --primary-soft:#FDEBE4;
  --accent:#2FA79A;
  --accent-soft:#E5F5F2;
  --highlight:#F2B544;
  --danger:#C0392B;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(20,17,15,.05);
  --shadow-2:0 12px 28px -12px rgba(20,17,15,.18);
  --container:1200px;
  --pad-x:clamp(20px,4vw,40px);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --t:180ms ease-out;
}

/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%;}
img{border-radius:var(--r-img);}
a{color:var(--accent);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--primary);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.35;}
h1{font-weight:800;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
::selection{background:var(--primary-soft);color:var(--ink-900);}

/* ===================== 容器 ===================== */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--pad-x);}

/* ===================== 顶部导航 ===================== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(250,247,242,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t),box-shadow var(--t);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-1);}
.header-inner{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);font-weight:800;font-size:17px;}
.brand:hover{color:var(--ink-900);}
.brand-mark{
  width:34px;height:34px;flex:0 0 auto;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(135deg,var(--primary),#F0834F);
  color:#fff;font-size:17px;font-weight:800;
}
.brand-text{display:inline-flex;align-items:baseline;gap:6px;}
.brand-sub{font-size:12px;font-weight:600;color:var(--ink-500);letter-spacing:.04em;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:40px;padding:0 14px;
  border-radius:8px;
  font-size:15px;color:var(--ink-700);
  transition:color var(--t),background var(--t);
}
.nav-link:hover{color:var(--primary);background:var(--primary-soft);}
.nav-link.is-active{color:var(--primary);font-weight:700;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;
  height:2px;border-radius:2px;background:var(--primary);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;
  display:grid;place-items:center;
  border:1px solid var(--line);border-radius:10px;
  background:var(--surface);color:var(--ink-700);
  transition:border-color var(--t),color var(--t),transform var(--t),box-shadow var(--t);
}
.icon-btn:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-1px);box-shadow:var(--shadow-1);}
.icon-btn svg{width:18px;height:18px;}
.menu-btn{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:var(--surface);}
.menu-btn span{display:block;width:18px;height:2px;margin:4px auto;border-radius:2px;background:var(--ink-900);}

/* 移动端抽屉 */
.drawer-backdrop{
  position:fixed;inset:0;z-index:70;
  background:rgba(20,17,15,.42);
  opacity:0;pointer-events:none;
  transition:opacity var(--t);
}
.drawer-backdrop.is-open{opacity:1;pointer-events:auto;}
.mobile-drawer{
  position:fixed;top:0;right:0;z-index:80;
  width:min(320px,86vw);height:100%;
  padding:22px var(--pad-x) 32px;
  background:var(--surface);
  border-left:1px solid var(--line);
  transform:translateX(101%);
  transition:transform 220ms ease-out;
  overflow-y:auto;overflow-x:hidden;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-title{font-size:15px;font-weight:700;color:var(--ink-900);}
.drawer-close{width:36px;height:36px;border:1px solid var(--line);border-radius:10px;font-size:18px;line-height:1;color:var(--ink-700);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.drawer-nav a{padding:12px 12px;border-radius:10px;font-size:15px;color:var(--ink-700);}
.drawer-nav a:hover{background:var(--bg-alt);color:var(--primary);}
.drawer-nav a.is-active{color:var(--primary);font-weight:700;background:var(--primary-soft);}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 26px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  white-space:nowrap;
  transition:transform var(--t),background var(--t),color var(--t),border-color var(--t),box-shadow var(--t);
}
.btn-primary{
  min-height:48px;
  background:linear-gradient(135deg,var(--primary),#F0834F);
  color:#fff;
  box-shadow:0 1px 2px rgba(20,17,15,.05);
}
.btn-primary:hover{color:#fff;background:linear-gradient(135deg,var(--primary-hover),var(--primary));transform:translateY(-1px);box-shadow:0 12px 28px -14px rgba(228,87,46,.7);}
.btn-primary:active{transform:translateY(0);background:var(--primary-active);}
.btn-ghost{background:var(--surface);color:var(--ink-900);border:1px solid var(--line);}
.btn-ghost:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);color:var(--primary-active);border-color:var(--primary-active);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent);}
.link-arrow::after{content:"›";transition:transform var(--t);}
.link-arrow:hover::after{transform:translateX(2px);}

/* ===================== 面包屑 ===================== */
.crumb-wrap{padding-top:28px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-500);
}
.breadcrumb a{color:var(--ink-500);}
.breadcrumb a:hover{color:var(--primary);}
.crumb-sep{color:#C9C2B8;}
.crumb-current{color:var(--ink-700);}
.crumb-title{
  max-width:46ch;color:var(--ink-500);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ===================== 文章头部 ===================== */
.article-shell{max-width:760px;margin:0 auto;}
.article-head{padding:22px 0 26px;border-bottom:1px solid var(--line);}
.article-kicker{
  display:inline-flex;align-items:center;gap:8px;
  margin-bottom:14px;padding:4px 12px;
  border-radius:var(--r-pill);
  background:var(--accent-soft);
  color:#1F7C72;font-size:12px;font-weight:700;letter-spacing:.04em;
}
.article-title{
  font-size:clamp(26px,3.4vw,36px);
  line-height:1.32;font-weight:800;
  color:var(--ink-900);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:18px;font-size:14px;color:var(--ink-500);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#CFC7BB;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:700;line-height:1.6;letter-spacing:.04em;
}
.badge-accent{background:var(--accent-soft);color:#1F7C72;}
.badge-primary{background:var(--primary-soft);color:var(--primary-active);}
.badge-line{background:var(--surface);border:1px solid var(--line);color:var(--ink-500);}
.share-btn{
  margin-left:auto;
  display:inline-flex;align-items:center;gap:8px;
  min-height:38px;padding:0 14px;
  border:1px solid var(--line);border-radius:10px;
  background:var(--surface);color:var(--ink-700);font-size:13px;
  transition:border-color var(--t),color var(--t),transform var(--t);
}
.share-btn:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px);}
.share-btn svg{width:15px;height:15px;}

/* ===================== 正文排版 ===================== */
.article-body{padding:34px 0 8px;}
.prose{font-size:17px;line-height:1.9;color:var(--ink-700);word-break:break-word;}
.prose>*:first-child{margin-top:0;}
.prose h2{
  font-size:28px;line-height:1.35;font-weight:700;
  margin:2em 0 .8em;
}
.prose h3{
  font-size:20px;line-height:1.45;font-weight:600;
  margin:1.7em 0 .7em;
}
.prose h4{font-size:17px;line-height:1.5;font-weight:700;margin:1.5em 0 .6em;}
.prose p{margin:0 0 1.1em;}
.prose strong{color:var(--ink-900);font-weight:700;}
.prose ul{margin:0 0 1.2em;}
.prose ul li{position:relative;padding-left:20px;margin-bottom:.6em;}
.prose ul li::before{
  content:"";position:absolute;left:3px;top:.78em;
  width:7px;height:7px;border-radius:50%;background:var(--accent);
}
.prose ol{counter-reset:item;margin:0 0 1.2em;}
.prose ol li{position:relative;padding-left:30px;margin-bottom:.6em;counter-increment:item;}
.prose ol li::before{
  content:counter(item);
  position:absolute;left:0;top:.35em;
  width:20px;height:20px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--accent-soft);color:#1F7C72;
  font-size:11px;font-weight:800;line-height:1;
}
.prose blockquote{
  margin:1.5em 0;padding:16px 22px;
  border-left:3px solid var(--primary);
  background:var(--primary-soft);
  border-radius:0 var(--r-img) var(--r-img) 0;
  color:var(--ink-700);
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{margin:1.5em 0;border-radius:var(--r-img);}
.prose figure{margin:1.5em 0;}
.prose figcaption{font-size:13px;color:var(--ink-500);text-align:center;margin-top:8px;}
.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
.prose a:hover{color:var(--primary);}
.prose hr{border:0;border-top:1px solid var(--line);margin:2em 0;}
.prose table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px;border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;}
.prose th,.prose td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;}
.prose th{background:var(--bg-alt);color:var(--ink-900);font-weight:700;}
.prose tr:last-child td{border-bottom:0;}

/* 空态 */
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:64px 24px;margin:12px 0;
  background:var(--surface);
  border:1px dashed var(--line);border-radius:var(--r-card);
  text-align:center;
}
.empty-icon{
  width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--primary-soft);color:var(--primary);
  font-size:22px;font-weight:800;
}
.empty-state p{font-size:15px;color:var(--ink-500);}

/* ===================== 文末标签 ===================== */
.article-foot{padding:30px 0 0;border-top:1px solid var(--line);margin-top:36px;}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tag-label{font-size:13px;color:var(--ink-500);}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 14px;border-radius:var(--r-pill);
  background:var(--surface);border:1px solid var(--line);
  font-size:13px;color:var(--ink-700);
  transition:border-color var(--t),color var(--t),transform var(--t);
}
.tag:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px);}

/* ===================== 相关推荐 ===================== */
.section{padding:72px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.section-title{font-size:28px;line-height:1.35;}
.section-sub{font-size:14px;color:var(--ink-500);margin-top:8px;}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#DED6CB;}
.card-cover{aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt);}
.card-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 300ms ease-out;}
.card:hover .card-cover img{transform:scale(1.03);}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:18px;line-height:1.45;font-weight:700;}
.card-body h3 a{color:var(--ink-900);}
.card-body h3 a:hover{color:var(--primary);}
.card-text{
  font-size:14px;color:var(--ink-500);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  gap:12px;font-size:13px;color:var(--ink-500);
}

/* ===================== 深色 CTA ===================== */
.cta-band{
  background:var(--ink-900);
  color:rgba(255,255,255,.76);
  padding:56px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:26px;line-height:1.4;}
.cta-inner p{margin-top:10px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.7);max-width:60ch;}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.btn-onDark{
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.34);
}
.btn-onDark:hover{color:#fff;border-color:#fff;transform:translateY(-1px);}

/* ===================== 页脚 ===================== */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.7);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:16px;}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);margin:0 0 8px;}
.site-footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-contact p:last-child{margin-bottom:0;}
.footer-list li{margin-bottom:10px;}
.footer-list a{color:rgba(255,255,255,.7);font-size:14px;}
.footer-list a:hover{color:var(--highlight);text-decoration:underline;}
.footer-bottom{
  margin-top:48px;padding:20px 0;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ===================== 断点 ===================== */
@media (max-width:1279px){
  .container{max-width:1080px;}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{padding:48px 0;}
}
@media (max-width:900px){
  .nav-links{display:none;}
  .menu-btn{display:block;}
  .header-inner{gap:12px;}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .crumb-wrap{padding-top:20px;}
  .crumb-title{max-width:100%;white-space:normal;}
  .article-head{padding:18px 0 22px;}
  .article-body{padding:26px 0 4px;}
  .prose{font-size:16px;line-height:1.85;}
  .prose h2{font-size:24px;}
  .prose h3{font-size:18px;}
  .card-grid{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  :root{--pad-x:16px;}
  .brand-text{font-size:15px;}
  .brand-sub{display:none;}
  .header-inner .btn-primary{display:none;}
  .article-title{font-size:24px;line-height:1.34;}
  .share-btn span{display:none;}
  .share-btn{padding:0 12px;}
  .prose h2{font-size:22px;}
  .empty-state{padding:48px 18px;}
}

/* roulang page: category1 */
/* ============ 设计令牌 ============ */
:root{
  --ink-900:#14110F;
  --ink-700:#2E2A26;
  --ink-500:#6B645C;
  --line:#E7E1D9;
  --bg:#FAF7F2;
  --bg-alt:#F3EDE4;
  --surface:#FFFFFF;
  --primary:#E4572E;
  --primary-hover:#C8461F;
  --primary-active:#A93A17;
  --primary-soft:#FDEBE4;
  --accent:#2FA79A;
  --accent-soft:rgba(47,167,154,.10);
  --highlight:#F2B544;
  --danger:#C0392B;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(20,17,15,.05);
  --shadow-2:0 12px 28px -12px rgba(20,17,15,.18);
  --ease:180ms ease-out;
  --header-h:64px;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-family:inherit}
h1{font-size:clamp(30px,4.2vw,44px);line-height:1.25;font-weight:800}
h2{font-size:28px;line-height:1.35;font-weight:700;margin-bottom:16px}
h3{font-size:20px;line-height:1.45;font-weight:600}
h4{font-size:17px;line-height:1.5;font-weight:600}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
a{color:inherit;text-decoration:none;transition:color var(--ease)}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
ul,ol{margin:0 0 1.1em;padding-left:1.3em}
li{margin-bottom:.6em}
button{font:inherit;color:inherit;cursor:pointer;border:none;background:none}
input,select,textarea{font:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;
}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink-900);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0}

/* ============ 容器与板块 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 clamp(20px,4vw,40px)}
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head p{margin:0;color:var(--ink-500);font-size:15px}
.eyebrow{
  display:inline-block;font-size:12px;line-height:1.4;letter-spacing:.04em;
  color:var(--accent);background:var(--accent-soft);
  padding:5px 12px;border-radius:999px;margin-bottom:14px;font-weight:600;
}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform var(--ease),background var(--ease),box-shadow var(--ease),border-color var(--ease),color var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),#F0834F);
  color:#fff;box-shadow:var(--shadow-1);
}
.btn-primary:hover{background:linear-gradient(135deg,var(--primary-hover),var(--primary));transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{background:var(--primary-active);transform:translateY(0);box-shadow:var(--shadow-1)}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink-900)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0);color:var(--primary-active)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.6;cursor:not-allowed;transform:none}
.link-arrow{color:var(--accent);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px}
.link-arrow span{transition:transform var(--ease)}
.link-arrow:hover{text-decoration:underline;text-underline-offset:3px}
.link-arrow:hover span{transform:translateX(2px)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(250,247,242,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px -16px rgba(20,17,15,.4)}
.header-inner{display:flex;align-items:center;gap:28px;height:var(--header-h)}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:9px;flex:none;
  background:linear-gradient(135deg,var(--primary),#F0834F);
  color:#fff;font-weight:800;font-size:16px;
}
.logo-text{font-size:17px;font-weight:700;color:var(--ink-900);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px;margin-right:auto}
.nav-link{
  position:relative;font-size:15px;font-weight:600;color:var(--ink-500);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.nav-link:hover{color:var(--ink-900)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink-900)}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.icon-btn{
  width:44px;height:44px;border-radius:var(--radius-btn);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-700);border:1px solid transparent;
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.icon-btn:hover{background:var(--bg-alt);color:var(--primary);border-color:var(--line)}
.icon-btn svg{width:19px;height:19px}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border:1px solid var(--line);background:var(--surface);
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 移动端抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(20,17,15,.45);z-index:90;opacity:0;transition:opacity var(--ease)}
.drawer-mask.is-open{opacity:1}
.drawer{
  position:fixed;top:0;right:0;z-index:100;
  width:min(330px,88vw);height:100%;
  background:var(--surface);
  transform:translateX(100%);
  transition:transform 220ms ease-out;
  display:flex;flex-direction:column;gap:8px;
  padding:20px;overflow-y:auto;overflow-x:hidden;
  box-shadow:-16px 0 40px -24px rgba(20,17,15,.5);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:40px;height:40px;border-radius:var(--radius-btn);font-size:22px;line-height:1;color:var(--ink-500);display:inline-flex;align-items:center;justify-content:center}
.drawer-close:hover{background:var(--bg-alt);color:var(--primary)}
.drawer-nav{display:flex;flex-direction:column;gap:4px;padding:12px 0 20px}
.drawer-nav a{
  display:block;padding:12px 14px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;color:var(--ink-700);
}
.drawer-nav a:hover{background:var(--bg-alt);color:var(--primary)}
.drawer-nav a.is-active{background:var(--primary-soft);color:var(--principal,var(--primary))}

/* ============ 页头 ============ */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--ink-900) url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  color:#fff;padding:52px 0 60px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(20,17,15,.94),rgba(20,17,15,.72) 52%,rgba(20,17,15,.42));
}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(250,247,242,.72);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb a{color:rgba(250,247,242,.72)}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.breadcrumb .sep{color:rgba(250,247,242,.45)}
.page-hero h1{color:#fff;max-width:840px}
.page-hero .lede{margin:18px 0 26px;max-width:680px;font-size:17px;line-height:1.85;color:rgba(250,247,242,.86)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.hero-tags span{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:13px;
  border:1px solid rgba(250,247,242,.28);color:rgba(250,247,242,.9);
  background:rgba(250,247,242,.06);
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.page-hero .btn-ghost{background:transparent;border-color:rgba(250,247,242,.36);color:#fff}
.page-hero .btn-ghost:hover{border-color:var(--highlight);color:var(--highlight);background:rgba(250,247,242,.06)}

/* ============ 分类切换条 ============ */
.tabs-bar{background:var(--bg);border-bottom:1px solid var(--line)}
.tabs{display:flex;gap:28px;overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{
  position:relative;padding:18px 2px;font-size:15px;font-weight:600;
  color:var(--ink-500);white-space:nowrap;border-bottom:2px solid transparent;
  transition:color var(--ease),border-color var(--ease);
}
.tab:hover{color:var(--ink-900)}
.tab.is-active{color:var(--ink-900);font-weight:700;border-bottom-color:var(--primary)}

/* ============ 左目录 + 右内容 ============ */
.layout{
  display:grid;grid-template-columns:260px minmax(0,1fr);gap:48px;
  align-items:start;padding:56px 0 96px;
}
.toc{
  position:sticky;top:calc(var(--header-h) + 20px);
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:14px;box-shadow:var(--shadow-1);
}
.toc-title{margin:0 0 6px;padding:6px 12px 10px;font-size:12px;letter-spacing:.04em;color:var(--ink-500);font-weight:600}
.toc-nav{display:flex;flex-direction:column;gap:2px}
.toc-nav a{
  display:block;padding:11px 12px;font-size:14.5px;color:var(--ink-700);
  border-left:3px solid transparent;border-radius:0 8px 8px 0;
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.toc-nav a:hover{background:var(--bg-alt);color:var(--ink-900)}
.toc-nav a.is-active{border-left-color:var(--primary);background:var(--primary-soft);color:var(--ink-900);font-weight:700}

.content-col > section{margin-bottom:56px;scroll-margin-top:96px}
.content-col > section:last-child{margin-bottom:0}
.content-col h2{margin-top:0}
.content-col > section > p{font-size:16px;color:var(--ink-700)}

.lead-block{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 26px;box-shadow:var(--shadow-1);margin-bottom:32px;
}
.lead-block p{margin:0;font-size:16px;line-height:1.9}

/* 要点列表 */
.points{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.points li{
  position:relative;padding-left:28px;font-size:15.5px;line-height:1.85;color:var(--ink-700);
  margin:0;
}
.points li::before{
  content:"";position:absolute;left:6px;top:.72em;
  width:8px;height:8px;border-radius:50%;background:var(--accent);
}
.points li strong{color:var(--ink-900)}

/* 编号流程 */
.flow{list-style:none;padding:0;margin:0;counter-reset:flow;display:grid;gap:18px}
.flow li{
  counter-increment:flow;position:relative;padding-left:52px;margin:0;
  font-size:15.5px;line-height:1.85;
}
.flow li::before{
  content:counter(flow,decimal-leading-zero);
  position:absolute;left:0;top:2px;
  width:36px;height:36px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1.5px solid var(--primary);color:var(--primary);
  font-size:14px;font-weight:700;font-family:system-ui,sans-serif;
}
.flow li strong{display:block;color:var(--ink-900);font-size:16px;margin-bottom:2px}

/* 卡片 */
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:12px;box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D8CFC2}
.card-media{aspect-ratio:16/9;overflow:hidden;border-radius:var(--radius-img)}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius-img);transition:transform 320ms ease-out}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:16px 8px 8px}
.card-body h3{margin-bottom:8px}
.card-body p{font-size:14.5px;line-height:1.8;color:var(--ink-500);margin:0}
.badge{
  display:inline-block;font-size:12px;line-height:1.4;letter-spacing:.04em;
  padding:4px 10px;border-radius:999px;background:var(--accent-soft);color:#1F7A70;font-weight:600;
}
.badge-warm{background:var(--primary-soft);color:var(--primary-active)}
.card-top{display:flex;align-items:center;gap:8px;margin-bottom:10px}

/* 提示条 */
.notice{
  display:flex;gap:12px;align-items:flex-start;
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px 20px;font-size:15px;line-height:1.8;
}
.notice .dot{
  flex:none;width:22px;height:22px;border-radius:50%;
  background:var(--highlight);color:#3A2A05;font-size:13px;font-weight:800;
  display:flex;align-items:center;justify-content:center;margin-top:4px;
}

/* 引述块 */
.quote{
  border-left:3px solid var(--primary);background:var(--primary-soft);
  border-radius:0 12px 12px 0;padding:18px 22px;margin:0;
  font-size:15.5px;line-height:1.85;color:var(--ink-700);
}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:box-shadow var(--ease),border-color var(--ease);
}
.faq-item[open]{box-shadow:inset 3px 0 0 var(--primary),var(--shadow-1);border-color:#DED5C8}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;
  padding:18px 54px 18px 20px;
  font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.5;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:22px;top:50%;
  width:11px;height:11px;border-right:2px solid var(--primary);border-bottom:2px solid var(--primary);
  transform:translateY(-70%) rotate(45deg);
  transition:transform var(--ease);
}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(225deg)}
.faq-body{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--ink-700)}
.faq-body p{margin:0 0 .8em}
.faq-body p:last-child{margin-bottom:0}

/* ============ 内链区 ============ */
.link-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.link-card{
  display:flex;flex-direction:column;gap:10px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.link-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D8CFC2}
.link-card h3{font-size:17px;margin:0}
.link-card p{margin:0;font-size:14.5px;color:var(--ink-500);line-height:1.8}
.link-card .link-arrow{margin-top:auto;font-size:14px}

/* ============ CTA 深色区块 ============ */
.cta-section{background:var(--ink-900);color:rgba(250,247,242,.86);padding:88px 0}
.cta-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,460px);gap:56px;align-items:start}
.cta-copy h2{color:#fff;margin-bottom:16px}
.cta-copy p{font-size:16px;line-height:1.9;color:rgba(250,247,242,.8);max-width:520px}
.cta-points{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:12px}
.cta-points li{position:relative;padding-left:26px;margin:0;font-size:15px;color:rgba(250,247,242,.85)}
.cta-points li::before{
  content:"";position:absolute;left:4px;top:.7em;width:8px;height:8px;border-radius:50%;background:var(--highlight);
}
.form-card{
  background:var(--surface);border-radius:var(--radius-card);
  padding:28px;box-shadow:0 24px 60px -30px rgba(0,0,0,.6);
}
.form-card h3{margin-bottom:6px}
.form-card .form-sub{font-size:14px;color:var(--ink-500);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-700);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;font-size:15px;color:var(--ink-900);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-btn);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--danger)}
.field-error{display:none;margin-top:6px;font-size:13px;color:var(--danger)}
.field.has-error .field-error{display:block}
.form-success{
  display:flex;align-items:flex-start;gap:10px;
  background:var(--accent-soft);border:1px solid rgba(47,167,154,.35);
  color:#1F7A70;border-radius:var(--radius-btn);
  padding:12px 14px;font-size:14px;line-height:1.7;margin-bottom:16px;
}
.form-note{margin-top:14px;font-size:13px;color:var(--ink-500);line-height:1.7}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(250,247,242,.82);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px 32px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:16px}
.site-footer p{font-size:14.5px;line-height:1.85;color:rgba(250,247,242,.72);margin:0}
.site-footer h4{color:#fff;font-size:15px;margin:0 0 16px;font-weight:700}
.footer-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.footer-list li{margin:0}
.footer-list a{color:rgba(250,247,242,.78);font-size:14.5px}
.footer-list a:hover{color:var(--highlight);text-decoration:underline;text-underline-offset:3px}
.footer-contact p{margin-bottom:10px}
.footer-contact p:last-child{margin-bottom:0}
.footer-bottom{
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(250,247,242,.14);
  font-size:13px;color:rgba(250,247,242,.6);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .cta-grid{grid-template-columns:minmax(0,1fr) minmax(0,400px);gap:40px}
}
@media (max-width:1023px){
  :root{--header-h:60px}
  .nav-links{display:none}
  .menu-toggle{display:inline-flex}
  .layout{grid-template-columns:1fr;gap:28px;padding:36px 0 72px}
  .toc{
    position:static;padding:10px;border-radius:var(--radius-card);
  }
  .toc-title{display:none}
  .toc-nav{flex-direction:row;gap:8px;overflow-x:auto;scrollbar-width:none}
  .toc-nav::-webkit-scrollbar{display:none}
  .toc-nav a{
    white-space:nowrap;border-left:none;border-bottom:3px solid transparent;
    border-radius:8px;padding:8px 12px;font-size:14px;
  }
  .toc-nav a.is-active{border-left:none;border-bottom-color:var(--primary);background:var(--primary-soft)}
  .cta-grid{grid-template-columns:1fr}
  .cta-section{padding:72px 0}
  .section{padding:72px 0}
  .content-col > section{margin-bottom:44px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--header-h:56px}
  body{font-size:16px}
  h2{font-size:24px}
  h3{font-size:18px}
  .section{padding:56px 0}
  .page-hero{padding:36px 0 44px}
  .page-hero .lede{font-size:15.5px}
  .hero-cta .btn{width:100%}
  .card-grid{grid-template-columns:1fr}
  .link-cards{grid-template-columns:1fr}
  .cta-section{padding:56px 0}
  .form-card{padding:22px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-bottom{flex-direction:column;gap:6px}
  .flow li{padding-left:46px}
}
@media (max-width:480px){
  .container{padding:0 16px}
  h1{font-size:30px}
  .logo-text{font-size:15px}
  .brand-mark{width:28px;height:28px;font-size:14px}
  .tabs{gap:18px}
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: category2 */
:root{
  --ink-900:#14110F;
  --ink-700:#2E2A26;
  --ink-500:#6B645C;
  --line:#E7E1D9;
  --bg:#FAF7F2;
  --bg-alt:#F3EDE4;
  --surface:#FFFFFF;
  --primary:#E4572E;
  --primary-hover:#C8461F;
  --primary-active:#A93A17;
  --primary-soft:#FDEBE4;
  --accent:#2FA79A;
  --accent-soft:#E4F4F2;
  --highlight:#F2B544;
  --danger:#C0392B;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(20,17,15,.05);
  --shadow-2:0 12px 28px -12px rgba(20,17,15,.18);
  --container:1200px;
  --pad-x:clamp(20px,4vw,40px);
  --sec-y:96px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:var(--accent);text-decoration:none;transition:color 180ms ease-out}
a:hover{color:var(--primary)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.35}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.1em;padding-left:1.15em}
li{margin-bottom:.6em}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{max-width:var(--container);margin:0 auto;padding:0 var(--pad-x)}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink-900);color:#fff;padding:10px 16px;border-radius:0 0 var(--radius-btn) 0;z-index:200}
.skip-link:focus{left:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(250,247,242,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color 180ms ease-out,box-shadow 180ms ease-out,background 180ms ease-out;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 18px -14px rgba(20,17,15,.35)}
.header-inner{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);font-weight:800;font-size:17px;white-space:nowrap}
.brand:hover{color:var(--ink-900)}
.brand-mark{
  width:30px;height:30px;flex:0 0 30px;border-radius:9px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),#F0834F);
  color:#fff;font-size:15px;font-weight:800;
}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:44px;padding:0 12px;color:var(--ink-700);font-size:15px;font-weight:500;
  border-radius:var(--radius-btn);
}
.nav-link:hover{color:var(--primary);background:var(--primary-soft)}
.nav-link.is-active{color:var(--ink-900);font-weight:700}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;
  background:var(--primary);border-radius:2px;
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{
  width:44px;height:44px;display:grid;place-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-btn);
  color:var(--ink-700);cursor:pointer;transition:all 180ms ease-out;
}
.icon-btn:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.menu-toggle{display:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform 180ms ease-out,background 180ms ease-out,color 180ms ease-out,border-color 180ms ease-out,box-shadow 180ms ease-out;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),#F0834F);
  color:#fff;box-shadow:var(--shadow-1);
}
.btn-primary:hover{background:linear-gradient(135deg,var(--primary-hover),var(--primary));color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{background:var(--primary-active);transform:translateY(0)}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink-900)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--accent);
  font-weight:600;font-size:15px;min-height:44px;background:none;border:0;padding:0;cursor:pointer;
}
.btn-link:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px}
.btn-link .arrow{transition:transform 180ms ease-out}
.btn-link:hover .arrow{transform:translateX(2px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.6;cursor:not-allowed}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:150;display:none}
.drawer.is-open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(20,17,15,.45)}
.drawer-panel{
  position:absolute;right:0;top:0;height:100%;width:min(320px,86vw);
  background:var(--surface);border-left:1px solid var(--line);
  padding:20px;display:flex;flex-direction:column;gap:8px;
  transform:translateX(100%);transition:transform 220ms ease-out;overflow-y:auto;
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.drawer-title{font-weight:800;color:var(--ink-900)}
.drawer .nav-link{height:48px;width:100%;justify-content:flex-start;font-size:16px;border:1px solid var(--line);margin-bottom:8px}
.drawer .nav-link.is-active{background:var(--primary-soft);border-color:var(--primary)}
.drawer .nav-link.is-active::after{display:none}
.drawer .btn{margin-top:12px}

/* ---------- breadcrumb ---------- */
.crumb{font-size:13px;color:var(--ink-500);padding:18px 0 0}
.crumb ol{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:0;padding:0}
.crumb li{margin:0;display:flex;gap:6px;align-items:center}
.crumb a{color:var(--ink-500)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--line)}

/* ---------- page head ---------- */
.page-head{
  background-color:var(--bg-alt);
  background-image:linear-gradient(180deg,rgba(250,247,242,.90),rgba(243,237,228,.97)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  padding:64px 0 56px;
  text-align:center;
}
.page-head h1{
  font-size:clamp(30px,4.2vw,44px);line-height:1.25;font-weight:800;
  margin:0 auto 18px;max-width:900px;
}
.page-head .lede{max-width:720px;margin:0 auto;color:var(--ink-500);font-size:16px;line-height:1.8}
.page-head .head-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:22px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:var(--radius-pill);border:1px solid var(--line);
  background:var(--surface);font-size:12px;letter-spacing:.04em;color:var(--ink-700);
}
.tag-accent{background:var(--accent-soft);border-color:transparent;color:#1E7A70}

/* ---------- category switch ---------- */
.cat-switch{border-bottom:1px solid var(--line);background:var(--surface)}
.cat-switch .container{display:flex;align-items:center;gap:24px;overflow-x:auto}
.cat-switch a{
  position:relative;display:inline-flex;align-items:center;height:58px;
  font-size:15px;font-weight:600;color:var(--ink-500);white-space:nowrap;
}
.cat-switch a:hover{color:var(--primary)}
.cat-switch a.is-current{color:var(--ink-900);font-weight:800}
.cat-switch a.is-current::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--primary);border-radius:3px 3px 0 0;
}

/* ---------- sections ---------- */
.section{padding:var(--sec-y) 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:28px;font-weight:700;margin-bottom:14px}
.section-head p{color:var(--ink-500);margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;margin-bottom:16px;
  border-radius:var(--radius-pill);background:var(--primary-soft);color:var(--primary-active);
  font-size:12px;font-weight:700;letter-spacing:.04em;
}

/* ---------- split rows ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split + .split{margin-top:72px}
.split-media{position:relative}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;box-shadow:var(--shadow-1)}
.split-media::after{
  content:"";position:absolute;inset:auto -14px -14px auto;width:96px;height:96px;
  border-radius:18px;background:linear-gradient(135deg,var(--primary),#F0834F);opacity:.14;z-index:-1;
}
.split-body h2{font-size:26px;margin-bottom:16px}
.split-body > p{color:var(--ink-500)}
.split-body ul{list-style:none;padding:0;margin:0}
.split-body li{position:relative;padding-left:26px;font-size:15px;line-height:1.8}
.split-body li::before{
  content:"";position:absolute;left:4px;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--accent);
}
.split-rev .split-media{order:2}
.split-rev .split-body{order:1}
.num-badge{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:50%;border:2px solid var(--primary);
  color:var(--primary);font-weight:800;font-size:14px;margin-bottom:14px;
}

/* ---------- stats ---------- */
.stats{
  background:var(--ink-900);color:#F5F1EB;padding:56px 0;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat-num{font-size:34px;font-weight:800;color:var(--highlight);line-height:1.2;font-family:system-ui,sans-serif}
.stat-label{font-size:14px;color:rgba(245,241,235,.72);margin-top:8px}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);border-left:3px solid transparent;transition:border-color 180ms ease-out,background 180ms ease-out}
.faq-item[open]{border-left-color:var(--primary);background:var(--surface)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 16px;font-size:17px;font-weight:600;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .ico{
  flex:0 0 22px;width:22px;height:22px;position:relative;transition:transform 180ms ease-out;
}
.faq-item summary .ico::before,.faq-item summary .ico::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
}
.faq-item summary .ico::before{left:3px;right:3px;top:10px;height:2px}
.faq-item summary .ico::after{top:3px;bottom:3px;left:10px;width:2px}
.faq-item[open] summary .ico::after{transform:scaleY(0)}
.faq-item .faq-body{padding:0 16px 22px;font-size:15px;line-height:1.85;color:var(--ink-500);max-width:820px}

/* ---------- internal links ---------- */
.link-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.link-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform 180ms ease-out,box-shadow 180ms ease-out,border-color 180ms ease-out;
}
.link-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#DCD3C7;color:inherit}
.link-card h3{font-size:18px;margin-bottom:10px}
.link-card p{font-size:14px;color:var(--ink-500);margin:0 0 14px}
.link-card .more{font-size:14px;font-weight:600;color:var(--accent);display:inline-flex;gap:6px;align-items:center}
.link-card:hover .more{color:var(--primary)}

/* ---------- cta / form ---------- */
.cta{background:var(--ink-900);color:#F5F1EB;padding:var(--sec-y) 0}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.cta h2{color:#fff;font-size:28px;margin-bottom:16px}
.cta p{color:rgba(245,241,235,.75)}
.cta-list{list-style:none;padding:0;margin:24px 0 0}
.cta-list li{position:relative;padding-left:24px;font-size:15px;color:rgba(245,241,235,.85)}
.cta-list li::before{
  content:"";position:absolute;left:2px;top:12px;width:8px;height:8px;border-radius:50%;background:var(--highlight);
}
.entry-form{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-2);color:var(--ink-700);
}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-700);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;min-height:48px;padding:12px 14px;font-size:15px;color:var(--ink-900);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-btn);
  font-family:inherit;line-height:1.6;transition:border-color 180ms ease-out,box-shadow 180ms ease-out;
}
.field textarea{min-height:96px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--accent);box-shadow:0 0 0 3px rgba(47,167,154,.18);outline:none;
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--danger)}
.field-error{color:var(--danger);font-size:13px;margin:6px 0 0;line-height:1.6}
.form-note{font-size:13px;color:var(--ink-500);margin:12px 0 0}
.form-success{
  margin:14px 0 0;padding:12px 14px;border-radius:var(--radius-btn);
  background:var(--accent-soft);color:#1E7A70;font-size:14px;line-height:1.7;
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(245,241,235,.82);padding:64px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:16px}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--primary),#F0834F)}
.site-footer p{margin:0 0 10px;line-height:1.8}
.site-footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-list{list-style:none;margin:0;padding:0}
.footer-list li{margin-bottom:10px}
.footer-list a{color:rgba(245,241,235,.82)}
.footer-list a:hover{color:var(--highlight);text-decoration:underline;text-underline-offset:3px}
.footer-contact p{color:rgba(245,241,235,.75)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(245,241,235,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(245,241,235,.6);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  :root{--sec-y:80px}
  .split{gap:40px}
  .split-body h2{font-size:24px}
}
@media (max-width:1023px){
  :root{--sec-y:72px}
  .nav-links{display:none}
  .menu-toggle{display:grid}
  .header-actions .btn-primary{display:none}
  .split{grid-template-columns:1fr;gap:28px}
  .split-rev .split-media{order:1}
  .split-rev .split-body{order:2}
  .split + .split{margin-top:56px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .link-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--sec-y:56px}
  body{font-size:15.5px}
  .header-inner{height:56px;gap:10px}
  .brand{font-size:15.5px}
  .page-head{padding:44px 0 40px}
  .page-head .lede{font-size:15px}
  .section-head h2,.cta h2{font-size:24px}
  .stats{padding:44px 0}
  .stat-num{font-size:28px}
  .link-grid{grid-template-columns:1fr}
  .entry-form{padding:20px}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:480px){
  :root{--pad-x:16px}
  .page-head{padding:36px 0 32px}
  .page-head h1{font-size:30px}
  .btn{padding:0 18px;font-size:14.5px}
  .stat-num{font-size:24px}
  .faq-item summary{font-size:16px;padding:18px 12px}
  .faq-item .faq-body{padding:0 12px 20px}
}