/* roulang page: index */
/* ========== 变量层 ========== */
:root{
  --ink:#0F2E27;
  --ink-deep:#0A1A16;
  --accent:#FF5A2B;
  --lime:#C8E64C;
  --bg:#F7F6F2;
  --bg-alt:#EFEDE6;
  --card:#FFFFFF;
  --line:#E3E0D8;
  --text:#1A1F1D;
  --text-2:#5C6663;
  --text-3:#8A928E;
  --danger:#C0392B;
  --ok:#1F7A54;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --r-badge:8px;
  --container:1200px;
  --gap:24px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:180ms;
  --shadow:0 2px 12px rgba(15,46,39,.08);
}

/* ========== 基础层 ========== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
::selection{background:var(--accent);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
strong,b{font-weight:700}

/* ========== 布局层 ========== */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px}
.section{padding:96px 0}
.section-light{background:#fff}
.section-alt{background:var(--bg-alt)}
.section-dark{background:var(--ink);color:#fff}

.section-head{max-width:660px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--accent);
}
.eyebrow::before{content:"";width:20px;height:1.5px;background:var(--accent);display:block}
.section-title{
  font-size:30px;font-weight:800;line-height:1.28;letter-spacing:-.01em;
  color:var(--ink);margin:12px 0 12px;
}
.section-desc{font-size:16px;line-height:1.75;color:var(--text-2);max-width:42ch}
.section-dark .section-title{color:#fff}
.section-dark .section-desc{color:rgba(255,255,255,.72)}
.section-dark .eyebrow{color:var(--lime)}
.section-dark .eyebrow::before{background:var(--lime)}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px}

/* ========== 组件：按钮与链接 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background-color var(--t) var(--ease),color var(--t) var(--ease),
             border-color var(--t) var(--ease),transform var(--t) var(--ease),
             filter var(--t) var(--ease);
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{filter:brightness(.92);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:rgba(15,46,39,.08)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;filter:none}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--ink);
  transition:color var(--t) var(--ease);
}
.text-link svg{transition:transform var(--t) var(--ease)}
.text-link:hover{color:var(--accent)}
.text-link:hover svg{transform:translateX(2px)}

/* 徽章 */
.badge{
  display:inline-block;font-size:13px;line-height:1.5;
  padding:3px 10px;border-radius:var(--r-badge);
  border:1px solid var(--line);background:#fff;color:var(--text-2);
  transition:background-color var(--t) var(--ease),border-color var(--t) var(--ease),color var(--t) var(--ease);
}
.badge-lime{background:var(--lime);border-color:var(--lime);color:var(--ink)}
.badge-outline{border-color:rgba(15,46,39,.25);color:var(--ink);background:transparent}

/* ========== 导航 ========== */
.site-header{position:sticky;top:0;z-index:80;background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:32px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{display:inline-flex;color:var(--accent)}
.logo-text{font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--ink)}
.main-nav{display:flex;align-items:center;gap:32px;margin-left:auto}
.nav-link{
  position:relative;font-size:15px;font-weight:500;letter-spacing:.01em;
  color:var(--text-2);padding:4px 0;
  transition:color var(--t) var(--ease);
}
.nav-link:hover{color:var(--ink);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:6px}
.nav-link.is-active{
  color:var(--ink);
  text-decoration:underline;text-decoration-color:var(--accent);
  text-decoration-thickness:2px;text-underline-offset:6px;
}
.header-actions{display:flex;align-items:center;gap:12px;flex:none}
.nav-toggle{display:none;width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-toggle span{display:block;width:20px;height:1.5px;background:var(--ink);border-radius:2px;transition:transform var(--t) var(--ease),opacity var(--t) var(--ease)}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:120;background:#fff;
  display:flex;flex-direction:column;padding:20px;
  transform:translateX(100%);visibility:hidden;
  transition:transform 260ms var(--ease),visibility 260ms var(--ease);
}
.mobile-drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:60px;border-bottom:1px solid var(--line);flex:none}
.drawer-close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;color:var(--ink)}
.drawer-nav{display:flex;flex-direction:column;flex:1;overflow-y:auto;margin-bottom:16px}
.drawer-nav a{font-size:20px;line-height:56px;border-bottom:1px solid var(--line);color:var(--ink)}
.drawer-nav a.is-active{color:var(--accent)}

/* ========== Hero ========== */
.hero{position:relative;padding:72px 0 0;overflow:hidden}
.hero::before{
  content:"";position:absolute;right:-12%;top:-24%;width:58%;height:150%;
  background-image:
    linear-gradient(rgba(15,46,39,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(15,46,39,.04) 1px,transparent 1px);
  background-size:40px 40px;
  pointer-events:none;
  transform:rotate(-6deg);
}
.hero-inner{position:relative;display:grid;grid-template-columns:6fr 5fr;gap:56px;align-items:center}
.hero-title{
  font-size:clamp(32px,4.6vw,54px);font-weight:800;line-height:1.22;
  letter-spacing:-.01em;color:var(--ink);margin:18px 0 0;
}
.hero-title .u{
  background-image:linear-gradient(to top,rgba(255,90,43,.9),rgba(255,90,43,.9));
  background-repeat:no-repeat;background-position:left bottom;background-size:100% 6px;
  padding-bottom:3px;
}
.hero-sub{font-size:17px;line-height:1.75;color:var(--text-2);margin-top:20px;max-width:30ch}
.hero-actions{display:flex;align-items:center;gap:24px;margin-top:32px;flex-wrap:wrap}
.hero-media{aspect-ratio:16/10;border-radius:var(--r-img);overflow:hidden;background:#E9E7E0;position:relative}
.hero-media::after{content:"";position:absolute;inset:0;background:rgba(15,46,39,.06);pointer-events:none}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-stats{display:flex;flex-wrap:wrap;border-top:1px solid var(--line);margin-top:64px;padding-top:24px}
.hero-stat{flex:1 1 0;min-width:140px;padding:0 24px;border-left:1px solid var(--line)}
.hero-stat:first-child{border-left:0;padding-left:0}
.hero-stat strong{display:block;font-size:26px;font-weight:800;line-height:1.35;color:var(--ink);font-variant-numeric:tabular-nums}
.hero-stat span{display:block;font-size:13px;color:var(--text-3);margin-top:2px}

/* ========== 服务区 ========== */
.service-layout{display:grid;grid-template-columns:minmax(220px,3fr) 9fr;gap:56px}
.service-list{border-top:1px solid var(--line)}
.service-row{
  display:grid;grid-template-columns:52px 1fr 28px;align-items:center;gap:20px;
  padding:24px 16px;border-bottom:1px solid var(--line);
  transition:background-color var(--t) var(--ease);
}
.service-row:hover{background:var(--bg-alt)}
.service-num{font-size:15px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.service-name{font-size:20px;font-weight:650;line-height:1.4;color:var(--ink)}
.service-text{font-size:14.5px;line-height:1.7;color:var(--text-2);margin-top:4px}
.service-arrow{display:flex;justify-content:flex-end;color:var(--text-3);transition:transform var(--t) var(--ease),color var(--t) var(--ease)}
.service-row:hover .service-arrow{transform:translateX(2px);color:var(--accent)}

/* ========== 数据区 ========== */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);margin-top:8px}
.stat{padding:8px 28px;border-left:1px solid rgba(255,255,255,.14)}
.stat:first-child{border-left:0;padding-left:0}
.stat-num{font-size:44px;font-weight:800;line-height:1.15;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.stat-label{font-size:13px;letter-spacing:.08em;color:rgba(255,255,255,.72);margin-top:12px}

/* ========== 案例区 ========== */
.case-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.case-card{
  grid-column:span 12;display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.case-card:nth-child(1){grid-column:span 7}
.case-card:nth-child(2){grid-column:span 5}
.case-card:nth-child(3){grid-column:span 5}
.case-card:nth-child(4){grid-column:span 7}
.case-card:hover{border-color:rgba(15,46,39,.28);box-shadow:var(--shadow)}
.case-media{aspect-ratio:16/9;overflow:hidden;background:#E9E7E0}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform 300ms var(--ease)}
.case-card:hover .case-media img{transform:scale(1.03)}
.case-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.case-title{font-size:18px;font-weight:650;line-height:1.5;color:var(--ink);transition:color var(--t) var(--ease)}
.case-card:hover .case-title{color:var(--accent)}
.case-text{font-size:14px;line-height:1.75;color:var(--text-2)}
.case-foot{margin-top:auto;padding-top:6px}
.case-card:hover .badge{background:var(--accent);border-color:var(--accent);color:#fff}

/* ========== 方案区 ========== */
.plan-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.plan-row + .plan-row{margin-top:56px}
.plan-media{aspect-ratio:16/10;border-radius:var(--r-img);overflow:hidden;background:#E9E7E0}
.plan-media img{width:100%;height:100%;object-fit:cover;transition:transform 300ms var(--ease)}
.plan-row:hover .plan-media img{transform:scale(1.03)}
.plan-row.rev .plan-media{order:-1}
.plan-title{font-size:24px;font-weight:700;line-height:1.4;color:var(--ink);margin:14px 0 12px}
.plan-body p{font-size:16px;line-height:1.8;color:var(--text-2)}
.plan-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.plan-list li{position:relative;padding-left:18px;font-size:15px;line-height:1.75;color:var(--text-2)}
.plan-list li::before{content:"";position:absolute;left:0;top:.68em;width:6px;height:6px;background:var(--ink);border-radius:1px}

/* ========== FAQ ========== */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-head{text-align:center;margin-bottom:40px}
.faq-head .section-desc{margin:0 auto}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:16px;font-weight:650;color:var(--ink);
  cursor:pointer;list-style:none;transition:color var(--t) var(--ease);
}
.faq-q::-webkit-details-marker{display:none}
.faq-q:hover{color:var(--accent)}
.faq-icon{position:relative;width:14px;height:14px;flex:none}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;
  transition:transform 220ms var(--ease),opacity 220ms var(--ease);
}
.faq-icon::before{left:0;top:6.5px;width:14px;height:1.5px}
.faq-icon::after{left:6.5px;top:0;width:1.5px;height:14px}
.faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{padding:0 40px 22px 0;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ========== 联系区 ========== */
.contact-layout{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start}
.form-panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:36px}
.field{margin-bottom:20px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 14px;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-btn);
  font-size:15px;color:var(--text);
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical}
.field select{
  appearance:none;-webkit-appearance:none;padding-right:36px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%230F2E27' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(15,46,39,.08);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--danger)}
.field-error{display:none;font-size:13px;line-height:1.6;color:var(--danger);margin-top:6px}
.field.has-error .field-error{display:block}
.form-ok{display:none;font-size:14px;color:var(--ok);margin-top:12px}
.form-ok.is-show{display:block}
.info-panel{background:var(--ink);color:#fff;border-radius:var(--r-card);padding:36px}
.info-panel h3{font-size:20px;font-weight:700;color:#fff;margin-bottom:10px}
.info-panel > p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.72)}
.info-list{margin-top:24px}
.info-list li{
  display:flex;justify-content:space-between;gap:16px;
  padding:16px 0;border-top:1px solid rgba(255,255,255,.14);
  font-size:14.5px;line-height:1.7;
}
.info-list li span:first-child{color:rgba(255,255,255,.62)}
.info-list li span:last-child{color:#fff;font-weight:600;text-align:right;font-variant-numeric:tabular-nums}

/* ========== 资讯区（CMS 注入点） ========== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.news-card:hover{border-color:rgba(15,46,39,.28);box-shadow:var(--shadow)}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:#E9E7E0}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 300ms var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-title{
  font-size:18px;font-weight:650;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color var(--t) var(--ease);
}
.news-card:hover .news-title{color:var(--accent)}
.news-excerpt{
  font-size:14px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:12px;display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;
}
.news-more{font-weight:600;color:var(--ink);transition:color var(--t) var(--ease)}
.news-card:hover .news-more{color:var(--accent)}
.empty-state{
  grid-column:1/-1;min-height:200px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed var(--line);border-radius:var(--r-card);
  background:rgba(233,231,224,.45);color:var(--text-3);font-size:14px;
}
.empty-state svg{color:var(--text-3)}

/* ========== 页脚 ========== */
.site-footer{background:var(--ink-deep);color:rgba(255,255,255,.72);padding:64px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-logo{display:inline-flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-logo .logo-mark{color:var(--accent)}
.footer-logo .logo-text{color:#fff;font-size:18px;font-weight:800}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:30ch}
.footer-domain{margin-top:14px;font-size:13px;color:rgba(255,255,255,.5);letter-spacing:.04em}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{color:rgba(255,255,255,.72);transition:color var(--t) var(--ease)}
.footer-links a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px}
.footer-links .plain{color:rgba(255,255,255,.72)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  border-top:1px solid rgba(255,255,255,.14);padding:20px 0;
  font-size:12px;color:rgba(255,255,255,.5);
}

/* ========== 响应式层 ========== */
@media (max-width:1279px){
  .container{padding:0 32px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .section{padding:64px 0}
  .hero{padding:56px 0 0}
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-sub{max-width:none}
  .hero-stats{margin-top:48px}
  .service-layout{grid-template-columns:1fr;gap:32px}
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .case-card:nth-child(n){grid-column:span 1}
  .plan-row{grid-template-columns:1fr;gap:28px}
  .plan-row.rev .plan-media{order:0}
  .contact-layout{grid-template-columns:1fr;gap:32px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .section-head-row{margin-bottom:36px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:48px 0}
  .section-title{font-size:24px}
  .section-desc{font-size:15px}
  .header-inner{height:60px;gap:16px}
  .logo-text{font-size:17px}
  .hero{padding:44px 0 0}
  .hero-title{font-size:clamp(28px,7vw,36px)}
  .hero-sub{font-size:16px}
  .hero-actions{gap:18px;margin-top:26px}
  .hero-stats{margin-top:36px;padding-top:20px}
  .hero-stat{flex:1 1 50%;min-width:0;padding:0 14px}
  .hero-stat:nth-child(odd){border-left:0;padding-left:0}
  .hero-stat strong{font-size:22px}
  .service-row{grid-template-columns:36px 1fr 22px;gap:12px;padding:18px 0}
  .service-name{font-size:18px}
  .stats-grid{grid-template-columns:1fr 1fr;gap:32px 0}
  .stat{padding:0 0 0 18px}
  .stat:nth-child(odd){border-left:0;padding-left:0}
  .stat-num{font-size:34px}
  .case-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .faq-q{font-size:15px;padding:18px 0}
  .faq-a{padding:0 0 18px}
  .form-panel{padding:24px}
  .info-panel{padding:26px}
  .section-head-row{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --brand:#0F2E27;
  --brand-soft:#1F4A40;
  --accent:#FF5A2B;
  --lime:#C8E64C;
  --bg:#F7F6F2;
  --bg-alt:#EFEDE6;
  --dark:#0A1A16;
  --card:#FFFFFF;
  --border:#E3E0D8;
  --text:#1A1F1D;
  --text-2:#5C6663;
  --text-3:#8A928E;
  --danger:#C0392B;
  --success:#1F7A54;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --r-badge:8px;
  --r-input:8px;
  --shadow-hover:0 2px 12px rgba(15,46,39,.08);
  --t:180ms cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{line-height:1.26;letter-spacing:-.01em}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.tabnum{font-variant-numeric:tabular-nums}
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-dark{background:var(--brand);color:#fff}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--bg);
  border-bottom:1px solid var(--border);
}
.header-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--brand)}
.logo-mark{display:inline-flex;color:var(--accent);flex:none}
.main-nav{display:flex;align-items:center;gap:32px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 0;transition:color var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t);
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1);background:var(--accent)}
.nav-cta{
  display:inline-flex;align-items:center;height:40px;padding:0 18px;
  border:1px solid var(--brand);border-radius:var(--r-btn);
  font-size:14.5px;font-weight:600;color:var(--brand);
  transition:background var(--t),color var(--t),transform var(--t);
}
.nav-cta:hover{background:rgba(15,46,39,.07);transform:translateY(-1px)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--border);border-radius:var(--r-btn);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;color:var(--brand);
}
.nav-toggle span{display:block;width:18px;height:1px;background:currentColor;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1px;background:currentColor;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-drawer{
  position:fixed;inset:0;background:#fff;z-index:80;display:none;
  flex-direction:column;padding:20px;
}
.mobile-drawer.is-open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:60px}
.drawer-close{width:44px;height:44px;border:1px solid var(--border);background:#fff;border-radius:var(--r-btn);cursor:pointer;font-size:20px;line-height:1;color:var(--brand)}
.drawer-nav{margin-top:12px;display:flex;flex-direction:column}
.drawer-nav a{font-size:20px;line-height:56px;border-bottom:1px solid var(--border);color:var(--text)}
.drawer-nav a.is-active{color:var(--accent);font-weight:700}
.drawer-cta{margin-top:auto}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background var(--t),color var(--t),transform var(--t),border-color var(--t),filter var(--t);
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{filter:brightness(.92);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:rgba(15,46,39,.08)}
.btn-light{background:#fff;color:var(--brand)}
.btn-light:hover{filter:brightness(.95);transform:translateY(-1px)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;filter:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--accent);
}
.link-arrow svg{transition:transform var(--t)}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------- breadcrumbs ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);
}
.crumbs a{color:var(--text-3);transition:color var(--t)}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{color:var(--border)}
.crumbs .current{color:var(--text)}

/* ---------- page head ---------- */
.page-head{padding:40px 0 64px;border-bottom:1px solid var(--border)}
.head-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center;margin-top:28px}
.head-copy{grid-column:1 / span 6}
.head-media{grid-column:8 / span 5}
.head-media .imgbox{aspect-ratio:16/10;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--border);position:relative}
.head-media .imgbox::after{content:"";position:absolute;inset:0;background:rgba(15,46,39,.10)}
.head-media img{width:100%;height:100%;object-fit:cover}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--accent);margin-bottom:14px;
}
h1{
  font-size:clamp(32px,4.6vw,54px);font-weight:800;letter-spacing:-.01em;
  max-width:15ch;
}
h1 .hl{position:relative;display:inline-block}
h1 .hl::after{
  content:"";position:absolute;left:0;right:0;bottom:4px;height:6px;
  background:var(--accent);opacity:.85;border-radius:3px;
}
.head-sub{
  margin-top:18px;font-size:17px;color:var(--text-2);max-width:32ch;line-height:1.75;
}
.head-actions{margin-top:26px;display:flex;flex-wrap:wrap;align-items:center;gap:20px}
.head-line{margin-top:34px;border-top:1px solid var(--border)}
.head-metrics{display:flex;flex-wrap:wrap;gap:44px;padding-top:20px}
.head-metrics .item{min-width:96px}
.head-metrics .num{font-size:22px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums}
.head-metrics .lbl{font-size:12px;letter-spacing:.06em;color:var(--text-3)}

/* ---------- category switch ---------- */
.cat-switch{
  display:flex;gap:28px;overflow-x:auto;margin-top:30px;
  scrollbar-width:none;padding-bottom:2px;
}
.cat-switch::-webkit-scrollbar{display:none}
.cat-tab{
  position:relative;flex:none;font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 0;transition:color var(--t);
}
.cat-tab::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.cat-tab:hover{color:var(--accent)}
.cat-tab.is-active{color:var(--accent);font-weight:700}
.cat-tab.is-active::after{transform:scaleX(1)}

/* ---------- section titles ---------- */
.sec-head{max-width:760px}
.sec-head.center{margin:0 auto;text-align:center}
.sec-head h2{font-size:30px;font-weight:800}
.sec-head p{margin-top:14px;font-size:16px;color:var(--text-2);max-width:44ch;line-height:1.8}
.sec-head.center p{margin-left:auto;margin-right:auto}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px}

/* ---------- story rows ---------- */
.story-list{margin-top:56px}
.story-row{
  display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center;
  margin-bottom:56px;
}
.story-row:last-child{margin-bottom:0}
.story-row .txt{grid-column:1 / span 6}
.story-row .pic{grid-column:7 / span 6}
.story-row.rev .txt{grid-column:7 / span 6}
.story-row.rev .pic{grid-column:1 / span 6}
.story-copy h3{font-size:20px;font-weight:650;margin:12px 0 12px}
.story-copy p{font-size:15.5px;color:var(--text-2);line-height:1.85;margin-bottom:10px}
.story-copy .link-arrow{margin-top:8px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;padding:4px 10px;border-radius:var(--r-badge);
  border:1px solid var(--border);color:var(--brand);background:#fff;
}
.badge-lime{background:var(--lime);border-color:var(--lime);color:var(--brand)}
.imgbox{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--border);background:#E9E7E0}
.story-row .imgbox{aspect-ratio:3/2}
.story-row .imgbox img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.story-row .imgbox:hover img{transform:scale(1.03)}

/* ---------- data bar ---------- */
.data-bar{margin-top:0}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid rgba(255,255,255,.14);border-bottom:1px solid rgba(255,255,255,.14)}
.data-cell{padding:32px 24px;border-left:1px solid rgba(255,255,255,.14)}
.data-cell:first-child{border-left:0}
.data-cell .num{font-size:44px;font-weight:800;color:var(--accent);line-height:1.1;font-variant-numeric:tabular-nums}
.data-cell .lbl{font-size:13px;letter-spacing:.08em;color:rgba(255,255,255,.72);margin-top:8px}

/* ---------- flow ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:48px}
.flow-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px;transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.flow-card:hover{border-color:rgba(15,46,39,.3);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.flow-card .idx{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--accent);font-variant-numeric:tabular-nums}
.flow-card h3{font-size:17px;font-weight:650;margin:10px 0 8px}
.flow-card p{font-size:14px;color:var(--text-2);line-height:1.8}

/* ---------- scene list ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;margin-top:48px}
.scene-card{
  grid-column:span 4;background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-card);padding:26px;
  transition:border-color var(--t),box-shadow var(--t);
}
.scene-card:hover{border-color:rgba(15,46,39,.3);box-shadow:var(--shadow-hover)}
.scene-card .icon{color:var(--accent);display:inline-flex}
.scene-card h3{font-size:18px;font-weight:650;margin:14px 0 8px}
.scene-card p{font-size:14.5px;color:var(--text-2);line-height:1.8}
.scene-card .dot{width:8px;height:8px;border-radius:50%;background:var(--lime);display:inline-block;margin-right:6px}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:48px auto 0}
.faq-item{border-bottom:1px solid var(--border);background:transparent}
.faq-item:first-child{border-top:1px solid var(--border)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:22px 4px;font-size:16.5px;font-weight:650;color:var(--text);
  transition:color var(--t);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent)}
.faq-icon{position:relative;width:14px;height:14px;flex:none;color:var(--text-3)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;transition:transform var(--t),opacity var(--t);
}
.faq-icon::before{left:0;right:0;top:6.5px;height:1px}
.faq-icon::after{top:0;bottom:0;left:6.5px;width:1px}
.faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-body{padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:72ch}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--r-card);
  padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{font-size:26px;font-weight:800}
.cta-band p{margin-top:10px;font-size:15px;color:var(--text-2)}
.cta-band .btn{flex:none}

/* ---------- related ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px}
.rel-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--border);
  border-top:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.rel-card:hover{border-color:rgba(15,46,39,.3);box-shadow:var(--shadow-hover)}
.rel-card .imgbox{border:0;border-radius:0;aspect-ratio:16/9}
.rel-card .imgbox img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.rel-card:hover .imgbox img{transform:scale(1.03)}
.rel-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px}
.rel-body h3{font-size:16.5px;font-weight:650;line-height:1.5;transition:color var(--t)}
.rel-card:hover .rel-body h3{color:var(--accent)}
.rel-body p{font-size:14px;color:var(--text-2);line-height:1.75}
.rel-body .link-arrow{margin-top:2px}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:#fff;padding:72px 0 32px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff}
.footer-logo .logo-mark{color:var(--accent)}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:30ch}
.footer-domain{margin-top:12px;font-size:13px;color:rgba(255,255,255,.5);letter-spacing:.04em}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color var(--t)}
.footer-links a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px}
.footer-links .plain{font-size:14px;color:rgba(255,255,255,.72)}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:12px;color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 32px}
  .section{padding:80px 0}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .section{padding:64px 0}
  .head-grid{gap:20px}
  .head-copy{grid-column:1 / span 12}
  .head-media{grid-column:1 / span 12;margin-top:8px}
  .story-row .txt,.story-row.rev .txt{grid-column:1 / span 12}
  .story-row .pic,.story-row.rev .pic{grid-column:1 / span 12}
  .story-row.rev .pic{order:-1}
  .story-row{margin-bottom:48px}
  .data-grid{grid-template-columns:repeat(2,1fr)}
  .data-cell:nth-child(3){border-left:0}
  .data-cell:nth-child(1),.data-cell:nth-child(2){border-bottom:1px solid rgba(255,255,255,.14)}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .scene-card{grid-column:span 6}
  .rel-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.82}
  .container{padding:0 20px}
  .section{padding:48px 0}
  h1{font-size:30px}
  .sec-head h2{font-size:24px}
  .story-copy h3{font-size:18px}
  .head-metrics{gap:28px}
  .data-cell{padding:24px 18px}
  .data-cell .num{font-size:34px}
  .flow-grid{grid-template-columns:1fr}
  .scene-card{grid-column:span 12}
  .rel-grid{grid-template-columns:1fr}
  .cta-band h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .faq-item summary{font-size:15px}
}
@media (max-width:559px){
  .container{padding:0 16px}
  .header-inner{height:60px}
  .brand{font-size:17px}
  .head-metrics{gap:20px}
  .head-metrics .item{min-width:80px}
  .btn{width:100%;justify-content:center}
  .head-actions{gap:12px}
  .head-actions .link-arrow{width:auto}
  .cta-band .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
/* ============ 变量层 ============ */
:root{
  --ink:#0F2E27;
  --ink-deep:#0A1A16;
  --accent:#FF5A2B;
  --accent-dark:#E64A1E;
  --lime:#C8E64C;
  --bg:#F7F6F2;
  --bg-alt:#EFEDE6;
  --card:#FFFFFF;
  --border:#E3E0D8;
  --text:#1A1F1D;
  --muted:#5C6663;
  --weak:#8A928E;
  --success:#1F7A54;
  --danger:#C0392B;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --r-badge:8px;
  --shadow-card:0 2px 12px rgba(15,46,39,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:180ms;
  --maxw:1200px;
}
/* ============ 基础层 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.25;letter-spacing:-.01em}
h3{font-weight:650}
p{margin:0}
svg{flex:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
::selection{background:rgba(255,90,43,.18)}
/* ============ 布局层 ============ */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 40px}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--accent);margin-bottom:12px}
.section-title{font-size:30px;line-height:1.3}
.section-sub{margin-top:12px;font-size:15.5px;color:var(--muted);max-width:620px}
.divider{height:1px;background:var(--border);border:0;margin:0}
/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,246,242,.97);
  border-bottom:1px solid var(--border);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.logo-mark{display:inline-flex;color:var(--accent)}
.main-nav{display:flex;align-items:center;gap:32px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--muted);padding:6px 0}
.nav-link:hover{color:var(--ink);text-decoration:underline;text-underline-offset:6px;text-decoration-thickness:1px}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent)}
.header-actions{display:flex;align-items:center;gap:16px}
.menu-toggle{display:none;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center;gap:6px;border-radius:8px;color:var(--ink)}
.menu-toggle span{display:block;width:20px;height:1px;background:currentColor;transition:transform var(--dur) var(--ease)}
.menu-toggle:hover{background:var(--bg-alt)}
.mobile-drawer{position:fixed;inset:0;z-index:90;background:#fff;display:none;flex-direction:column;padding:20px 20px 32px}
.mobile-drawer.is-open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px;margin-bottom:8px}
.drawer-close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;font-size:24px;line-height:1;color:var(--ink);border-radius:8px}
.drawer-close:hover{background:var(--bg-alt)}
.drawer-link{display:block;font-size:20px;font-weight:500;color:var(--ink);padding:16px 0;border-bottom:1px solid var(--border)}
.drawer-link:hover{color:var(--accent)}
.drawer-foot{margin-top:auto;padding-top:24px}
/* ============ 按钮 / 徽章 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border:1px solid var(--ink);color:var(--ink)}
.btn-outline:hover{background:rgba(15,46,39,.08)}
.btn-disabled{opacity:.4;cursor:not-allowed;pointer-events:none}
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--ink)}
.text-link svg{transition:transform var(--dur) var(--ease)}
.text-link:hover{color:var(--accent)}
.text-link:hover svg{transform:translateX(2px)}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:13px;line-height:1;padding:6px 10px;border-radius:var(--r-badge);border:1px solid var(--border);background:#fff;color:var(--ink)}
.badge-lime{background:var(--lime);border-color:transparent;color:var(--ink);font-weight:600}
/* ============ 面包屑 ============ */
.breadcrumb{padding:32px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--weak);line-height:1.6}
.breadcrumb a{color:var(--weak)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:#C4C9C4}
.breadcrumb .current{color:var(--text);font-weight:600}
/* ============ 文章头 ============ */
.article-head{padding:20px 0 28px;border-bottom:1px solid var(--border)}
.article-title{font-size:clamp(30px,4vw,40px);margin:16px 0 18px;line-height:1.28;max-width:900px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--weak)}
.article-meta .dot{width:1px;height:12px;background:var(--border)}
/* ============ 正文与侧栏 ============ */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start;padding:48px 0 88px}
.article-body{max-width:780px;font-size:16.5px;line-height:1.85;color:var(--text)}
.article-body > :first-child{margin-top:0}
.article-body p{margin:0 0 1.15em}
.article-body h2{font-size:22px;margin:40px 0 14px;padding-left:14px;position:relative}
.article-body h2::before{content:"";position:absolute;left:0;top:.34em;width:3px;height:18px;background:var(--accent);border-radius:2px}
.article-body h3{font-size:19px;margin:28px 0 10px;font-weight:650}
.article-body h4{font-size:17px;margin:22px 0 8px;font-weight:650}
.article-body ul,.article-body ol{margin:0 0 1.15em}
.article-body li{margin-top:8px}
.article-body ul li{position:relative;padding-left:20px}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;background:var(--ink);border-radius:1px}
.article-body ol{counter-reset:li}
.article-body ol li{position:relative;padding-left:28px;counter-increment:li}
.article-body ol li::before{content:counter(li) ".";position:absolute;left:0;top:0;color:var(--accent);font-weight:700}
.article-body blockquote{margin:0 0 1.15em;padding:16px 18px;background:var(--bg-alt);border-left:3px solid var(--ink);border-radius:0 8px 8px 0;color:var(--muted)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);width:100%;margin:24px 0}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--weak);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:0 0 1.15em}
.article-body th,.article-body td{border:1px solid var(--border);padding:10px 12px;text-align:left}
.article-body th{background:var(--bg-alt);font-weight:650}
.article-body tbody tr:nth-child(even){background:#FBFAF7}
.article-body pre{background:var(--ink-deep);color:#E9EDE9;padding:16px;border-radius:var(--r-btn);overflow-x:auto;font-size:14px;line-height:1.7;margin:0 0 1.15em}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.94em}
.article-body strong{font-weight:650}
.article-body a{color:var(--accent);border-bottom:1px solid rgba(255,90,43,.35)}
.article-body a:hover{border-bottom-color:var(--accent)}
.article-body hr{border:0;height:1px;background:var(--border);margin:32px 0}
/* 空态 */
.empty-state{border:1px dashed var(--border);background:var(--bg-alt);border-radius:var(--r-card);padding:56px 24px;text-align:center;color:var(--muted)}
.empty-state svg{color:var(--weak);margin:0 auto 14px}
.empty-state h2{font-size:18px;color:var(--text);margin-bottom:8px}
.empty-state p{font-size:14.5px;margin-bottom:18px}
.empty-state a{color:var(--accent);font-weight:600}
.empty-state a:hover{text-decoration:underline;text-underline-offset:4px}
/* 侧栏 */
.sidebar{display:flex;flex-direction:column;gap:24px;position:sticky;top:88px}
.side-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);padding:24px}
.side-title{font-size:15px;font-weight:650;color:var(--ink);margin-bottom:16px;letter-spacing:.01em}
.toc-list a{display:block;position:relative;font-size:14px;line-height:1.6;color:var(--muted);padding:7px 0 7px 14px;border-left:1px solid var(--border)}
.toc-list a:hover{color:var(--accent)}
.toc-list a.is-current{color:var(--ink);font-weight:600}
.toc-list a.is-current::before{content:"";position:absolute;left:-1px;top:7px;bottom:7px;width:2px;background:var(--accent)}
.mini-list li + li{margin-top:16px;padding-top:16px;border-top:1px solid var(--border)}
.mini-list a{display:block;font-size:14px;font-weight:600;color:var(--text);line-height:1.55}
.mini-list a:hover{color:var(--accent)}
.mini-time{font-size:12.5px;color:var(--weak);margin-top:6px}
.cta-card{border:1px solid var(--ink);border-radius:var(--r-card);padding:24px;background:var(--card)}
.cta-card h3{font-size:17px;color:var(--ink);margin-bottom:8px}
.cta-card p{font-size:14px;color:var(--muted);margin-bottom:18px;line-height:1.75}
.cta-card .btn{width:100%}
/* 上下篇 */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:56px}
.post-nav a{display:block;background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);padding:20px 22px;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.post-nav a:hover{border-color:rgba(15,46,39,.3);box-shadow:var(--shadow-card)}
.post-nav .label{font-size:13px;color:var(--weak)}
.post-nav .title{display:block;margin-top:8px;font-size:15.5px;font-weight:650;color:var(--text);line-height:1.55}
.post-nav a:hover .title{color:var(--accent)}
.back-cat{margin-top:24px;font-size:14px}
/* 相关推荐区 */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.card:hover{border-color:rgba(15,46,39,.3);box-shadow:var(--shadow-card)}
.card-media{aspect-ratio:16/9;overflow:hidden;background:#E9E7E0}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--dur) var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{display:flex;flex-direction:column;gap:10px;padding:20px 22px 24px;flex:1}
.card-title{font-size:16px;font-weight:650;line-height:1.55;color:var(--text)}
.card:hover .card-title{color:var(--accent)}
.card-text{font-size:14px;color:var(--muted);line-height:1.75}
.card-meta{margin-top:auto;font-size:13px;color:var(--weak)}
/* CTA 条 */
.cta-band{background:var(--bg-alt);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:56px 0}
.cta-band-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{font-size:26px;line-height:1.35;max-width:560px}
.cta-band p{font-size:15px;color:var(--muted);margin-top:10px;max-width:560px}
/* ============ 页脚 ============ */
.site-footer{background:var(--ink-deep);color:rgba(255,255,255,.72);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:#fff;margin-bottom:16px}
.footer-logo .logo-mark{color:var(--accent)}
.footer-desc{font-size:14px;line-height:1.75;max-width:280px}
.footer-domain{font-size:13px;color:rgba(255,255,255,.5);margin-top:14px}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links li + li{margin-top:10px}
.footer-links a,.footer-links .plain{font-size:14px;color:rgba(255,255,255,.72)}
.footer-links a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.14);padding:20px 0;font-size:12px;color:rgba(255,255,255,.5)}
/* ============ 响应式层 ============ */
@media (max-width:1279px){
  .container{padding:0 32px}
  .article-layout{gap:40px}
}
@media (max-width:1023px){
  .container{padding:0 32px}
  .main-nav{display:none}
  .menu-toggle{display:inline-flex}
  .header-inner{height:64px}
  .section{padding:72px 0}
  .article-layout{grid-template-columns:1fr;gap:40px;padding:40px 0 72px}
  .article-body{max-width:100%}
  .sidebar{position:static;display:grid;grid-template-columns:1fr 1fr;gap:20px}
  .toc-card{display:none}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  body{font-size:16px}
  .header-actions .btn{display:none}
  .section{padding:56px 0}
  .section-title{font-size:24px}
  .article-title{font-size:30px}
  .article-body{font-size:16px}
  .article-body h2{font-size:20px}
  .article-body h3{font-size:18px}
  .post-nav{grid-template-columns:1fr}
  .cta-band-inner{flex-direction:column;align-items:flex-start}
  .cta-band h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-bottom:36px}
}
@media (max-width:559px){
  .container{padding:0 20px}
  .sidebar{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .sidebar{display:flex;flex-direction:column}
  .toc-card{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
/* ============ 变量层 ============ */
:root{
  --green:#0F2E27;
  --green-deep:#0A1A16;
  --orange:#FF5A2B;
  --lime:#C8E64C;
  --bg:#F7F6F2;
  --bg-2:#EFEDE6;
  --card:#FFFFFF;
  --line:#E3E0D8;
  --ink:#1A1F1D;
  --ink-2:#5C6663;
  --ink-3:#8A928E;
  --danger:#C0392B;
  --ok:#1F7A54;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --r-badge:8px;
  --shadow-hover:0 2px 12px rgba(15,46,39,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:180ms;
  --sec-pad:96px;
  --container:1200px;
}

/* ============ 基础层 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;transition:color var(--t) var(--ease),border-color var(--t) var(--ease),background-color var(--t) var(--ease);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:800;letter-spacing:-.01em;}
h1{font-size:clamp(32px,4.6vw,54px);}
h2{font-size:30px;}
h3{font-size:20px;font-weight:650;}
h4{font-size:17px;font-weight:650;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px;}
::selection{background:var(--orange);color:#fff;}

/* ============ 布局层 ============ */
.container{max-width:var(--container);margin:0 auto;padding:0 40px;width:100%;}
.section{padding:var(--sec-pad) 0;}
.section--tight{padding:64px 0;}
.section--deep{background:var(--green);color:#fff;}
.section--soft{background:var(--bg-2);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--orange);
  font-weight:600;
  margin-bottom:14px;
}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--ink-2);font-size:16px;}
.section--deep .section-head p{color:rgba(255,255,255,.72);}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ============ 头部与导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--bg);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  min-height:68px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{color:var(--green);display:inline-flex;}
.logo-text{font-size:17px;font-weight:800;letter-spacing:.01em;color:var(--green);}
.main-nav{display:flex;align-items:center;gap:32px;flex:1 1 auto;justify-content:center;}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  letter-spacing:.01em;
  color:var(--ink-2);
  padding:6px 0;
  min-height:44px;
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.nav-link::before{
  content:"";
  width:5px;height:5px;border-radius:50%;
  background:var(--orange);
  opacity:0;
  transition:opacity var(--t) var(--ease);
}
.nav-link:hover{color:var(--green);}
.nav-link.is-active{color:var(--green);font-weight:600;}
.nav-link.is-active::before{opacity:1;}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  transition:background-color var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease),filter var(--t) var(--ease);
}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--orange);color:#fff;}
.btn-primary:hover{filter:brightness(.92);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);filter:brightness(.85);}
.btn-ghost{border-color:var(--green);color:var(--green);background:transparent;}
.btn-ghost:hover{background:rgba(15,46,39,.08);}
.btn-light{border-color:rgba(255,255,255,.5);color:#fff;background:transparent;}
.btn-light:hover{background:rgba(255,255,255,.12);}
.btn:disabled{opacity:.4;cursor:default;transform:none;filter:none;}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--green);min-height:44px;}
.link-arrow svg{transition:transform var(--t) var(--ease);}
.link-arrow:hover{color:var(--orange);}
.link-arrow:hover svg{transform:translateX(2px);}

/* 移动菜单 */
.nav-toggle{
  display:none;
  width:44px;height:44px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  padding:0;
  position:relative;
}
.nav-toggle .bar{
  position:absolute;left:12px;right:12px;height:1px;background:var(--green);
  transition:transform var(--t) var(--ease),opacity var(--t) var(--ease);
}
.nav-toggle .bar:nth-child(1){top:19px;}
.nav-toggle .bar:nth-child(2){top:25px;}
.nav-toggle[aria-expanded="true"] .bar:nth-child(1){transform:translateY(3px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .bar:nth-child(2){transform:translateY(-3px) rotate(-45deg);}
.drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:8px 20px 24px;
}
.drawer.is-open{display:block;}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  font-size:20px;
  line-height:56px;
  border-bottom:1px solid var(--line);
  color:var(--ink);
  min-height:56px;
}
.drawer-nav a.is-active{color:var(--orange);}
.drawer .btn{width:100%;margin-top:20px;}

/* ============ 面包屑 ============ */
.crumbs{
  padding-top:32px;
  font-size:13px;
  color:var(--ink-3);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.crumbs a{color:var(--ink-3);}
.crumbs a:hover{color:var(--orange);}
.crumbs .sep{color:var(--line);}
.crumbs .current{color:var(--ink);}

/* ============ 页头 ============ */
.page-head{padding:28px 0 0;}
.page-head-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
  padding:32px 0 56px;
}
.page-head h1{margin-bottom:18px;}
.page-head h1 .kw{
  position:relative;
  white-space:nowrap;
}
.page-head h1 .kw::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-6px;
  height:6px;
  background:var(--orange);
  opacity:.9;
  border-radius:3px;
}
.page-sub{
  font-size:17px;
  color:var(--ink-2);
  max-width:520px;
  margin-bottom:28px;
}
.page-head-actions{display:flex;flex-wrap:wrap;align-items:center;gap:24px;}
.page-head-media{position:relative;}
.page-head-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-img);
}
.page-head-media::after{
  content:"";
  position:absolute;inset:0;
  background:rgba(15,46,39,.12);
  border-radius:var(--r-img);
  pointer-events:none;
}

/* ============ 分类切换条 ============ */
.cat-switch{
  display:flex;
  gap:28px;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:0;
  overflow-x:auto;
  scrollbar-width:none;
}
.cat-switch::-webkit-scrollbar{display:none;}
.cat-switch a{
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  padding:16px 0;
  white-space:nowrap;
  border-bottom:2px solid transparent;
  min-height:48px;
}
.cat-switch a:hover{color:var(--orange);}
.cat-switch a.is-active{color:var(--orange);border-bottom-color:var(--orange);font-weight:600;}

/* ============ 数据条 ============ */
.stat-strip{
  background:var(--green);
  color:#fff;
  padding:36px 0;
}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.stat-item{
  padding:0 24px;
  border-left:1px solid rgba(255,255,255,.14);
}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-num{
  font-size:44px;
  font-weight:800;
  color:var(--orange);
  line-height:1.1;
  letter-spacing:-.02em;
}
.stat-label{
  font-size:13px;
  letter-spacing:.08em;
  color:rgba(255,255,255,.72);
  margin-top:8px;
}

/* ============ 双栏布局 + 锚点目录 ============ */
.layout-2col{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  gap:56px;
  align-items:start;
}
.anchor-nav{position:sticky;top:96px;}
.anchor-nav .anchor-title{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--ink-3);
  font-weight:600;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
  margin-bottom:12px;
}
.anchor-nav ul{display:flex;flex-direction:column;}
.anchor-nav a{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14.5px;
  color:var(--ink-2);
  padding:10px 0;
  border-bottom:1px solid var(--line);
}
.anchor-nav a::before{
  content:"";
  width:6px;height:6px;
  background:var(--orange);
  opacity:0;
  border-radius:1px;
  transition:opacity var(--t) var(--ease);
}
.anchor-nav a:hover{color:var(--orange);}
.anchor-nav a:hover::before{opacity:1;}

/* ============ 内容分节 ============ */
.content-section{padding-bottom:64px;margin-bottom:64px;border-bottom:1px solid var(--line);scroll-margin-top:96px;}
.content-section:last-of-type{border-bottom:0;margin-bottom:0;padding-bottom:0;}
.content-section h2{
  position:relative;
  padding-left:16px;
  margin-bottom:12px;
}
.content-section h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;
  width:3px;height:22px;
  background:var(--orange);
  border-radius:2px;
}
.content-section .sec-intro{color:var(--ink-2);max-width:680px;margin-bottom:28px;}

/* 条目行列表 */
.row-list{border-top:1px solid var(--line);}
.row-item{
  display:grid;
  grid-template-columns:56px minmax(0,1fr) 24px;
  align-items:center;
  gap:20px;
  padding:22px 8px;
  border-bottom:1px solid var(--line);
  transition:background-color var(--t) var(--ease);
  min-height:64px;
}
.row-item:hover{background:var(--bg-2);}
.row-num{
  font-size:14px;
  font-weight:700;
  color:var(--orange);
  letter-spacing:.04em;
}
.row-item h3{font-size:18px;margin-bottom:6px;}
.row-item p{font-size:14.5px;color:var(--ink-2);margin:0;}
.row-item .row-arrow{color:var(--ink-3);justify-self:end;transition:transform var(--t) var(--ease),color var(--t) var(--ease);}
.row-item:hover .row-arrow{transform:translateX(2px);color:var(--orange);}

/* 步骤 */
.step-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-top:8px;
}
.step-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.step-card:hover{border-color:rgba(15,46,39,.3);box-shadow:var(--shadow-hover);}
.step-card .step-idx{
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--orange);
  display:block;
  margin-bottom:14px;
}
.step-card h3{font-size:17px;margin-bottom:10px;}
.step-card p{font-size:14px;color:var(--ink-2);margin:0;line-height:1.75;}

/* 图文卡 */
.media-block{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:40px;
  align-items:center;
  margin-top:8px;
}
.media-block + .media-block{margin-top:48px;}
.media-block .media-img img{
  width:100%;
  aspect-ratio:3/2;
  object-fit:cover;
  border-radius:var(--r-img);
}
.media-block h3{margin-bottom:12px;font-size:20px;}
.media-block p{color:var(--ink-2);font-size:15.5px;}
.badge{
  display:inline-block;
  font-size:13px;
  padding:4px 10px;
  border-radius:var(--r-badge);
  border:1px solid var(--line);
  color:var(--green);
  background:var(--card);
  margin-bottom:14px;
}
.badge-lime{background:var(--lime);border-color:var(--lime);color:var(--green);font-weight:600;}

/* 数据卡小格 */
.metric-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-top:8px;
}
.metric-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
}
.metric-card .m-num{font-size:28px;font-weight:800;color:var(--green);letter-spacing:-.02em;}
.metric-card .m-label{font-size:13px;letter-spacing:.08em;color:var(--ink-3);margin:6px 0 12px;}
.metric-card p{font-size:14px;color:var(--ink-2);margin:0;line-height:1.75;}

/* FAQ */
.faq{max-width:760px;}
.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:16px;
  padding:20px 0;
  font-size:16px;
  font-weight:650;
  min-height:56px;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary .sign{position:relative;width:14px;height:14px;flex:0 0 auto;color:var(--green);}
.faq summary .sign::before,
.faq summary .sign::after{
  content:"";position:absolute;background:currentColor;transition:transform var(--t) var(--ease),opacity var(--t) var(--ease);
}
.faq summary .sign::before{left:0;right:0;top:6.5px;height:1px;}
.faq summary .sign::after{top:0;bottom:0;left:6.5px;width:1px;}
.faq details[open] summary .sign::after{transform:scaleY(0);opacity:0;}
.faq details[open] summary{color:var(--orange);}
.faq .faq-body{padding:0 0 22px;font-size:15px;line-height:1.8;color:var(--ink-2);max-width:660px;}

/* CTA + 表单 */
.cta-band{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:40px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.cta-band h2{font-size:26px;margin-bottom:12px;}
.cta-band .cta-copy p{color:var(--ink-2);font-size:15.5px;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:14px;font-weight:600;color:var(--ink);}
.field input,
.field select,
.field textarea{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  min-height:46px;
  padding:10px 14px;
  font-size:15px;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
  width:100%;
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--green);
  box-shadow:0 0 0 3px rgba(15,46,39,.08);
}
.field select{
  appearance:none;
  background-image:linear-gradient(45deg,transparent 50%,var(--ink-2) 50%),linear-gradient(135deg,var(--ink-2) 50%,transparent 50%);
  background-position:calc(100% - 18px) 21px,calc(100% - 13px) 21px;
  background-size:5px 5px,5px 5px;
  background-repeat:no-repeat;
}
.field .hint{font-size:13px;color:var(--ink-3);}
.field .err{font-size:13px;color:var(--danger);}
.form-actions{grid-column:1 / -1;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}

/* 相关阅读 */
.read-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.read-card{
  display:block;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.read-card:hover{border-color:rgba(15,46,39,.3);box-shadow:var(--shadow-hover);}
.read-card .thumb{overflow:hidden;border-radius:0;}
.read-card .thumb img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:0;
  transition:transform var(--t) var(--ease);
}
.read-card:hover .thumb img{transform:scale(1.03);}
.read-card .read-body{padding:22px 24px 24px;}
.read-card h3{font-size:17px;margin-bottom:10px;transition:color var(--t) var(--ease);}
.read-card:hover h3{color:var(--orange);}
.read-card p{font-size:14px;color:var(--ink-2);margin-bottom:14px;line-height:1.75;}

/* ============ 页脚 ============ */
.site-footer{background:var(--green-deep);color:#fff;padding:72px 0 28px;}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-logo .logo-mark{color:var(--lime);}
.footer-logo .logo-text{color:#fff;font-size:17px;font-weight:800;}
.footer-desc{font-size:14px;color:rgba(255,255,255,.72);max-width:280px;margin-bottom:12px;}
.footer-domain{font-size:13px;color:rgba(255,255,255,.45);letter-spacing:.04em;margin:0;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:18px;letter-spacing:.02em;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-links a:hover{color:var(--orange);text-decoration:underline;text-underline-offset:4px;}
.footer-links .plain{font-size:14px;color:rgba(255,255,255,.72);}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  padding-top:24px;
  font-size:12px;
  color:rgba(255,255,255,.45);
  flex-wrap:wrap;
}

/* ============ 响应式层 ============ */
@media (max-width:1279px){
  .container{padding:0 32px;}
  .layout-2col{gap:40px;}
}
@media (max-width:1024px){
  :root{--sec-pad:64px;}
  .main-nav{display:none;}
  .nav-toggle{display:block;}
  .page-head-grid{grid-template-columns:1fr;gap:32px;padding-bottom:40px;}
  .page-head-media{order:-1;}
  .layout-2col{grid-template-columns:1fr;}
  .anchor-nav{position:static;border-bottom:1px solid var(--line);padding-bottom:12px;}
  .anchor-nav ul{flex-direction:row;overflow-x:auto;gap:20px;scrollbar-width:none;}
  .anchor-nav ul::-webkit-scrollbar{display:none;}
  .anchor-nav a{border-bottom:0;white-space:nowrap;padding:10px 0;}
  .step-grid{grid-template-columns:repeat(2,1fr);}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .stat-grid{grid-template-columns:repeat(2,1fr);row-gap:28px;}
  .stat-item:nth-child(3){border-left:0;padding-left:0;}
  .cta-band{grid-template-columns:1fr;gap:28px;padding:32px;}
  .read-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  :root{--sec-pad:48px;}
  .container{padding:0 20px;}
  h2{font-size:24px;}
  .section-head{margin-bottom:32px;}
  .page-sub{font-size:16px;}
  .page-head-actions{gap:16px;}
  .stat-num{font-size:32px;}
  .stat-item{padding:0 18px;}
  .media-block{grid-template-columns:1fr;gap:24px;}
  .media-block + .media-block{margin-top:40px;}
  .step-grid{grid-template-columns:1fr;}
  .metric-grid{grid-template-columns:1fr;}
  .read-grid{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;}
  .row-item{grid-template-columns:40px minmax(0,1fr) 20px;gap:14px;padding:18px 4px;}
  .content-section{padding-bottom:44px;margin-bottom:44px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:559px){
  .stat-grid{grid-template-columns:1fr;row-gap:24px;}
  .stat-item{border-left:0;padding:0;}
  .stat-item + .stat-item{border-top:1px solid rgba(255,255,255,.14);padding-top:20px;}
  .cta-band{padding:24px;}
  .page-head h1 .kw::after{height:5px;bottom:-4px;}
  .drawer-nav a{font-size:18px;line-height:52px;}
  .header-inner{min-height:60px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  html{scroll-behavior:auto;}
  .card:hover,.read-card:hover{transform:none;}
}

/* roulang page: category3 */
:root{
  --ink:#0F2E27;
  --ink-deep:#0A1A16;
  --accent:#FF5A2B;
  --lime:#C8E64C;
  --bg:#F7F6F2;
  --bg-2:#EFEDE6;
  --card:#FFFFFF;
  --line:#E3E0D8;
  --text:#1A1F1D;
  --muted:#5C6663;
  --weak:#8A928E;
  --err:#C0392B;
  --ok:#1F7A54;
  --ph:#E9E7E0;
  --r-card:14px;
  --r-media:12px;
  --r-btn:8px;
  --r-input:8px;
  --r-badge:8px;
  --sp-section:96px;
  --shadow-hover:0 2px 12px rgba(15,46,39,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;font-weight:800}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
svg{display:block}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 40px}
.num{font-variant-numeric:tabular-nums}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,246,242,.96);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:32px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{color:var(--ink);display:inline-flex}
.logo-text{font-size:19px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.main-nav{display:flex;align-items:center;gap:32px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--muted);
  padding:6px 0;transition:color var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--ink);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t),background var(--t);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink)}
.nav-link.is-active::after{transform:scaleX(1);background:var(--accent)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:16px}
.nav-cta{
  font-size:14px;font-weight:600;color:var(--ink);
  border:1px solid var(--ink);border-radius:var(--r-btn);
  padding:9px 18px;transition:background var(--t),color var(--t),transform var(--t);
}
.nav-cta:hover{background:rgba(15,46,39,.06);transform:translateY(-1px)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:6px;
}
.nav-toggle span{display:block;width:18px;height:1px;background:var(--ink)}
.drawer{
  position:fixed;inset:0;z-index:90;background:#fff;display:none;flex-direction:column;
  padding:20px;
}
.drawer.is-open{display:flex}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:48px}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;cursor:pointer;font-size:20px;line-height:1;color:var(--ink);
}
.drawer-links{margin-top:16px;display:flex;flex-direction:column}
.drawer-links a{
  font-size:20px;font-weight:500;color:var(--ink);padding:0 4px;line-height:56px;
  border-bottom:1px solid var(--line);
}
.drawer-links a.is-active{color:var(--accent)}
.drawer-foot{margin-top:auto;padding-bottom:8px}

/* ---------- buttons / badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{filter:brightness(.92);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:rgba(15,46,39,.08)}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;filter:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);
  transition:color var(--t);
}
.link-arrow span{transition:transform var(--t)}
.link-arrow:hover{color:var(--accent)}
.link-arrow:hover span{transform:translateX(2px)}
.badge{
  display:inline-block;font-size:13px;line-height:1.4;padding:4px 10px;
  border-radius:var(--r-badge);border:1px solid var(--line);
  background:var(--lime);color:var(--ink);font-weight:600;
  transition:background var(--t),color var(--t),border-color var(--t);
}

/* ---------- page hero ---------- */
.page-hero{padding-bottom:0}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--weak);padding-top:28px;
}
.breadcrumb a{color:var(--weak);transition:color var(--t)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:#C9C5BA}
.breadcrumb .current{color:var(--text)}
.hero-grid{
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:end;
  padding:28px 0 44px;
}
.eyebrow{
  font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--accent);
  display:block;margin-bottom:14px;
}
.page-title{font-size:clamp(32px,4.6vw,54px);font-weight:800;line-height:1.2}
.page-title em{
  font-style:normal;
  box-shadow:inset 0 -6px 0 rgba(255,90,43,.22);
}
.page-sub{margin-top:18px;font-size:17px;color:var(--muted);max-width:640px;line-height:1.8}
.hero-media{border-radius:var(--r-media);overflow:hidden;background:var(--ph);position:relative}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-media)}
.hero-media::after{
  content:"";position:absolute;inset:0;background:rgba(15,46,39,.06);border-radius:var(--r-media);
}

/* ---------- category switch ---------- */
.cat-switch{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cat-switch-inner{
  display:flex;gap:28px;overflow-x:auto;align-items:center;
  scrollbar-width:none;-ms-overflow-style:none;
}
.cat-switch-inner::-webkit-scrollbar{display:none}
.cat-switch a{
  flex:0 0 auto;font-size:15px;font-weight:500;color:var(--muted);
  padding:16px 0;border-bottom:2px solid transparent;transition:color var(--t),border-color var(--t);
}
.cat-switch a:hover{color:var(--accent)}
.cat-switch a.is-active{color:var(--ink);border-bottom-color:var(--accent)}

/* ---------- stat band ---------- */
.stat-band{background:var(--ink);color:#fff}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat-item{padding:40px 24px;border-right:1px solid rgba(255,255,255,.14)}
.stat-item:first-child{padding-left:0}
.stat-item:last-child{border-right:0}
.stat-num{font-size:44px;font-weight:800;line-height:1.1;color:var(--accent);font-variant-numeric:tabular-nums}
.stat-label{font-size:13px;letter-spacing:.08em;color:rgba(255,255,255,.72);margin-top:10px}

/* ---------- sections ---------- */
.section{padding:var(--sp-section) 0}
.section-alt{background:var(--bg-2)}
.section-head{max-width:760px;margin-bottom:44px}
.sec-title{font-size:30px;margin-top:10px}
.sec-desc{margin-top:12px;font-size:15px;color:var(--muted)}
.section-head-center{max-width:860px;margin:0 auto 44px;text-align:center}

/* ---------- waterfall tiles ---------- */
.waterfall{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.tile{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;border-top:1px solid var(--line);
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.tile:hover{border-color:rgba(15,46,39,.3);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.span-7{grid-column:span 7}
.span-5{grid-column:span 5}
.span-8{grid-column:span 8}
.span-4{grid-column:span 4}
.tile-media{display:block;overflow:hidden;background:var(--ph)}
.tile-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform var(--t)}
.tile:hover .tile-media img{transform:scale(1.03)}
.tile-body{padding:24px}
.tile-title{font-size:20px;font-weight:650;margin:14px 0 10px;transition:color var(--t)}
.tile:hover .tile-title{color:var(--accent)}
.tile-desc{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:16px}
.tile-meta{display:flex;gap:10px;flex-wrap:wrap}

/* ---------- flow ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.flow-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 24px;transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.flow-item:hover{border-color:rgba(15,46,39,.3);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.flow-num{font-size:15px;font-weight:700;letter-spacing:.06em;color:var(--accent);font-variant-numeric:tabular-nums}
.flow-item h3{font-size:18px;font-weight:650;margin:14px 0 10px}
.flow-item p{font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- spec list ---------- */
.spec-list{border-top:1px solid var(--line);max-width:960px}
.spec-row{
  display:grid;grid-template-columns:240px 1fr;gap:24px;align-items:baseline;
  padding:22px 0;border-bottom:1px solid var(--line);
}
.spec-key{font-size:16px;font-weight:650;color:var(--ink)}
.spec-val{font-size:15px;color:var(--muted)}

/* ---------- faq ---------- */
.faq{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
  gap:20px;padding:22px 0;font-size:16px;font-weight:650;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";color:var(--accent);font-size:20px;line-height:1.3;flex:0 0 auto}
.faq-item[open] summary::after{content:"–"}
.faq-body{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--muted)}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:44px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{font-size:26px;line-height:1.3}
.cta-band p{margin-top:10px;font-size:15px;color:var(--muted)}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}

/* ---------- read list ---------- */
.read-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.read-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.read-card:hover{border-color:rgba(15,46,39,.3);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.read-media{display:block;overflow:hidden;background:var(--ph)}
.read-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform var(--t)}
.read-card:hover .read-media img{transform:scale(1.03)}
.read-body{padding:20px}
.read-body h3{font-size:16px;font-weight:650;transition:color var(--t)}
.read-card:hover .read-body h3{color:var(--accent)}
.read-body p{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-deep);color:rgba(255,255,255,.72);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-logo{display:flex;align-items:center;gap:10px;color:#fff}
.footer-logo .logo-text{font-size:19px;font-weight:800;color:#fff}
.footer-desc{font-size:14px;line-height:1.8;margin-top:16px;max-width:300px}
.footer-domain{font-size:13px;color:rgba(255,255,255,.5);margin-top:10px}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color var(--t)}
.footer-links a:hover{color:var(--accent);text-decoration:underline}
.footer-links .plain{font-size:14px;color:rgba(255,255,255,.72)}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.14);
  padding:24px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:12px;color:rgba(255,255,255,.48);
}

/* ---------- form ---------- */
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}
.field label{font-size:14px;font-weight:600;color:var(--text)}
.field input,.field select,.field textarea{
  height:46px;border:1px solid var(--line);border-radius:var(--r-input);
  background:#fff;padding:0 14px;font-size:15px;
  transition:border-color var(--t),box-shadow var(--t);
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.8;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(15,46,39,.06);
}
.field.has-error input,.field.has-error textarea{border-color:var(--err)}
.field .error-text{display:none;font-size:13px;color:var(--err)}
.field.has-error .error-text{display:block}
.field .ok-text{display:none;font-size:13px;color:var(--ok)}
.field.is-ok .ok-text{display:block}
.contact-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start}
.contact-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:32px}
.contact-panel h3{font-size:20px;font-weight:650}
.contact-list{margin-top:20px;border-top:1px solid var(--line)}
.contact-list li{
  display:flex;justify-content:space-between;gap:16px;
  padding:14px 0;border-bottom:1px solid var(--line);font-size:14px;
}
.contact-list .k{color:var(--weak)}
.contact-list .v{color:var(--text);font-weight:600;font-variant-numeric:tabular-nums}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 32px}
  :root{--sp-section:80px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .header-inner{justify-content:space-between}
  .hero-grid{grid-template-columns:1fr;gap:32px;padding:24px 0 36px}
  .hero-media img{aspect-ratio:16/9}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat-item{padding:28px 20px;border-bottom:1px solid rgba(255,255,255,.14)}
  .stat-item:first-child{padding-left:20px}
  .stat-item:nth-child(2n){border-right:0}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .span-7,.span-5,.span-8,.span-4{grid-column:span 6}
  .read-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
}
@media (max-width:767px){
  :root{--sp-section:64px}
  .container{padding:0 20px}
  .page-title{font-size:30px}
  .sec-title{font-size:24px}
  .stat-num{font-size:34px}
  .spec-row{grid-template-columns:1fr;gap:8px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:559px){
  :root{--sp-section:48px}
  .span-7,.span-5,.span-8,.span-4{grid-column:span 12}
  .flow-grid{grid-template-columns:1fr}
  .read-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr}
  .stat-item{border-right:0}
  .tile-body{padding:20px}
  .faq-item summary{font-size:15px}
  .footer-grid{grid-template-columns:1fr}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto}
}