/* roulang page: index */
:root{
  --primary:#10352F;
  --primary-dark:#0B2621;
  --accent:#E8643A;
  --accent-hover:#D4532C;
  --bg:#F7F4EE;
  --white:#FFFFFF;
  --text:#1A2B27;
  --text-sec:#5A6B65;
  --text-weak:#8A9691;
  --border:#DCE6E2;
  --success:#2E7D5B;
  --warning:#B7791F;
  --error:#C0392B;
  --radius-card:14px;
  --radius-btn:8px;
  --radius-badge:999px;
  --radius-input:8px;
  --shadow-base:0 1px 2px rgba(16,53,47,.06);
  --shadow-hover:0 16px 32px -16px rgba(16,53,47,.18);
  --space-section:96px;
  --container-max:1200px;
  --font-title:"Noto Serif SC","Songti SC","SimSun",serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);font-size:16px;line-height:1.75;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s}
ul{list-style:none}
button{font-family:inherit;cursor:pointer}
.container{max-width:var(--container-max);margin:0 auto;padding:0 24px}
.section{padding:var(--space-section) 0}
@media(max-width:768px){.section{padding:56px 0}}

/* 顶部信息条 */
.top-bar{background:var(--primary);color:#fff;font-size:13px;height:36px;display:flex;align-items:center}
.top-bar .container{display:flex;justify-content:space-between;align-items:center;width:100%}
.top-bar .domain{color:rgba(255,255,255,.85);letter-spacing:.3px}
.top-bar .entry-btn{display:inline-block;padding:4px 14px;border:1px solid rgba(255,255,255,.6);border-radius:999px;font-size:12px;color:#fff;transition:all .25s}
.top-bar .entry-btn:hover{background:rgba(255,255,255,.15);border-color:#fff}
@media(max-width:768px){.top-bar .entry-btn{display:none}}

/* 主导航 */
.main-nav{position:sticky;top:0;z-index:100;background:rgba(247,244,238,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(220,230,226,.7);height:72px}
.main-nav .container{display:flex;align-items:center;justify-content:space-between;height:72px}
.nav-logo{display:flex;align-items:center;gap:10px;font-family:var(--font-title);font-size:22px;font-weight:700;color:var(--primary);letter-spacing:1px}
.nav-logo .logo-icon{width:36px;height:36px;border-radius:50%;background:var(--primary);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.nav-logo .logo-icon svg{width:20px;height:20px}
.nav-list{display:flex;align-items:center;gap:36px}
.nav-list a{font-size:15px;color:var(--text-sec);font-weight:500;position:relative;padding:26px 0;transition:color .25s}
.nav-list a:hover{color:var(--primary)}
.nav-list a.active{color:var(--primary);font-weight:600}
.nav-list a.active::after{content:'';position:absolute;bottom:0;left:0;width:100%;height:2px;background:var(--primary);border-radius:2px}
.nav-cta{display:inline-flex;align-items:center;padding:10px 22px;background:var(--accent);color:#fff;border-radius:var(--radius-btn);font-size:14px;font-weight:600;transition:all .25s;border:none}
.nav-cta:hover{background:var(--accent-hover);transform:translateY(-1px)}
.nav-cta:active{transform:translateY(0)}
.nav-cta:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.nav-toggle{display:none;background:none;border:none;width:40px;height:40px;flex-direction:column;justify-content:center;gap:5px;cursor:pointer}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--primary);border-radius:2px;transition:all .3s}
@media(max-width:1024px){
  .nav-list{display:none}
  .nav-toggle{display:flex}
  .mobile-menu{position:fixed;top:108px;left:0;right:0;background:var(--bg);padding:24px;box-shadow:var(--shadow-hover);z-index:99;border-bottom:1px solid var(--border)}
  .mobile-menu a{display:block;padding:14px 0;font-size:16px;color:var(--text);border-bottom:1px solid var(--border)}
  .mobile-menu a:last-child{border-bottom:none}
  .mobile-menu a.active{color:var(--accent);font-weight:600}
  .nav-cta{display:none}
}

/* Hero */
.hero{position:relative;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;background-color:var(--primary-dark);min-height:560px;display:flex;align-items:center;color:#fff}
.hero::before{content:'';position:absolute;inset:0;background:rgba(11,38,33,.68)}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center;padding-top:64px;padding-bottom:64px}
.hero h1{font-family:var(--font-title);font-size:44px;line-height:1.25;font-weight:700;letter-spacing:2px;margin-bottom:20px}
.hero h1 span{color:var(--accent)}
.hero .subtitle{font-size:16px;line-height:1.8;color:rgba(255,255,255,.85);max-width:520px;margin-bottom:32px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 32px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;transition:all .25s;border:none;line-height:1}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:transparent;border:1px solid rgba(255,255,255,.7);color:#fff}
.btn-outline:hover{background:#fff;color:var(--primary);border-color:#fff}
.hero-visual{display:flex;justify-content:center;align-items:center}
.hero-visual .ornament{width:240px;height:240px;border-radius:50%;border:2px solid rgba(255,255,255,.25);display:flex;align-items:center;justify-content:center;position:relative}
.hero-visual .ornament::before{content:'';position:absolute;inset:20px;border-radius:50%;border:1px dashed rgba(255,255,255,.3);animation:spin 30s linear infinite}
.hero-visual .ornament svg{width:90px;height:90px;fill:var(--accent)}
@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:768px){
  .hero{min-height:auto}
  .hero .container{grid-template-columns:1fr;padding-top:48px;padding-bottom:48px}
  .hero h1{font-size:32px}
  .hero-visual{display:none}
}

/* KPI 指标看板 */
.kpi-wrap{background:var(--white);padding:0;margin-top:-1px}
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:32px 0}
.kpi-card{background:var(--bg);border-radius:var(--radius-card);padding:24px;text-align:center;border:1px solid var(--border);position:relative;overflow:hidden}
.kpi-card .kpi-num{font-size:40px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.2;margin-bottom:8px}
.kpi-card .kpi-label{font-size:14px;color:var(--text-sec)}
.kpi-card .kpi-bar{position:absolute;bottom:0;left:0;height:2px;background:var(--accent);border-radius:2px}
.kpi-card .kpi-bar.b1{width:72%}
.kpi-card .kpi-bar.b2{width:88%}
.kpi-card .kpi-bar.b3{width:65%}
.kpi-card .kpi-bar.b4{width:92%}
.kpi-note{font-size:12px;color:var(--text-weak);text-align:center;padding-bottom:12px}
@media(max-width:1024px){.kpi-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.kpi-grid{grid-template-columns:1fr 1fr;gap:12px}.kpi-card{padding:16px}.kpi-card .kpi-num{font-size:28px}}

/* 服务矩阵 */
.services-section{background:var(--bg)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:48px;flex-wrap:wrap;gap:16px}
.section-head .eyebrow{display:inline-block;padding:5px 16px;background:rgba(232,100,58,.1);color:var(--accent);border-radius:999px;font-size:13px;font-weight:600;margin-bottom:12px}
.section-head h2{font-family:var(--font-title);font-size:32px;line-height:1.25;color:var(--text);font-weight:700}
.section-head .sec-desc{color:var(--text-sec);font-size:15px;max-width:480px}
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{background:var(--white);border-radius:var(--radius-card);padding:28px;border:1px solid var(--border);box-shadow:var(--shadow-base);transition:all .3s ease;position:relative}
.service-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.service-card .svc-icon{width:52px;height:52px;border-radius:12px;background:rgba(16,53,47,.08);display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.service-card .svc-icon svg{width:26px;height:26px;stroke:var(--primary)}
.service-card h3{font-family:var(--font-title);font-size:20px;margin-bottom:12px;color:var(--text)}
.service-card p{font-size:14px;line-height:1.7;color:var(--text-sec);margin-bottom:16px}
.service-card .detail-link{font-size:14px;color:var(--accent);font-weight:600;display:inline-flex;align-items:center;gap:4px;transition:gap .25s}
.service-card .detail-link:hover{gap:8px}
.service-card.featured{background:var(--primary);border-color:var(--primary)}
.service-card.featured h3{color:#fff}
.service-card.featured p{color:rgba(255,255,255,.8)}
.service-card.featured .svc-icon{background:rgba(255,255,255,.12)}
.service-card.featured .svc-icon svg{stroke:#fff}
.service-card.featured .detail-link{color:#fff}
.services-grid .col-span-2{grid-column:span 2}
@media(max-width:1024px){
  .services-grid{grid-template-columns:1fr 1fr}
  .services-grid .col-span-2{grid-column:span 1}
}
@media(max-width:768px){
  .services-grid{grid-template-columns:1fr}
  .section-head h2{font-size:24px}
}

/* 结果对比 */
.compare-section{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#fff;padding:80px 0}
.compare-section .sec-title{font-family:var(--font-title);font-size:32px;text-align:center;margin-bottom:16px}
.compare-section .sec-sub{text-align:center;color:rgba(255,255,255,.7);font-size:15px;margin-bottom:48px}
.compare-grid{display:grid;grid-template-columns:1fr auto 1fr;gap:32px;align-items:stretch;max-width:960px;margin:0 auto}
.compare-col{background:rgba(255,255,255,.05);border-radius:var(--radius-card);padding:32px;backdrop-filter:blur(4px)}
.compare-col.traditional{opacity:.65}
.compare-col h3{font-family:var(--font-title);font-size:20px;margin-bottom:24px;display:flex;align-items:center;gap:10px}
.compare-col h3 .dot{width:8px;height:8px;border-radius:50%;display:inline-block}
.compare-col.traditional h3 .dot{background:var(--text-weak)}
.compare-col.leyu h3 .dot{background:var(--accent)}
.compare-item{display:flex;align-items:flex-start;gap:12px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.08)}
.compare-item:last-child{border-bottom:none}
.compare-item .ck{width:22px;height:22px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;margin-top:3px}
.compare-item .ck svg{width:12px;height:12px;stroke:#fff}
.compare-item .ck.true{background:var(--accent)}
.compare-item .ck.false{background:rgba(255,255,255,.2)}
.compare-item p{font-size:14px;line-height:1.6;color:rgba(255,255,255,.85)}
.compare-item strong{font-weight:600;display:block;font-size:14px;color:#fff;margin-bottom:2px}
.compare-item span{font-size:13px;color:rgba(255,255,255,.6)}
.vs-badge{display:flex;align-items:center;justify-content:center;font-family:var(--font-title);font-size:18px;font-weight:700;color:var(--accent);background:rgba(255,255,255,.1);border-radius:50%;width:56px;height:56px;align-self:center;border:2px solid rgba(255,255,255,.2)}
@media(max-width:768px){
  .compare-grid{grid-template-columns:1fr;gap:16px}
  .vs-badge{margin:0 auto}
  .compare-section .sec-title{font-size:24px}
}

/* 最新资讯 */
.news-section{background:var(--white)}
.news-list{display:flex;flex-direction:column;gap:20px}
.news-card{display:flex;background:var(--bg);border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--border);transition:all .3s ease;text-decoration:none}
.news-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.news-card:hover .news-cover img{transform:scale(1.03)}
.news-cover{width:132px;min-width:132px;overflow:hidden;position:relative}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-info{padding:20px 24px;flex:1;display:flex;flex-direction:column}
.news-info .badge{display:inline-block;padding:3px 12px;background:rgba(16,53,47,.1);color:var(--primary);border-radius:999px;font-size:12px;font-weight:600;margin-bottom:8px;align-self:flex-start}
.news-info h3{font-family:var(--font-title);font-size:18px;color:var(--text);margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-info p{font-size:14px;color:var(--text-sec);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:12px;flex:1}
.news-meta{display:flex;justify-content:space-between;align-items:center}
.news-meta .date{font-size:13px;color:var(--text-weak)}
.news-meta .read-more{font-size:13px;font-weight:600;color:var(--accent);display:inline-flex;align-items:center;gap:4px;transition:gap .25s}
.news-card:hover .news-meta .read-more{gap:8px}
.empty-state{border:1.5px dashed var(--border);border-radius:var(--radius-card);padding:48px;text-align:center;color:var(--text-weak);font-size:14px;background:var(--bg)}
.empty-state .fish-ornament{width:48px;height:48px;margin:0 auto 16px;opacity:.5}
.view-all{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15px;margin-top:32px;transition:gap .25s}
.view-all:hover{gap:10px}
@media(max-width:768px){
  .news-card{flex-direction:column}
  .news-cover{width:100%;min-width:100%;height:160px}
  .news-cover img{height:160px}
}

/* FAQ */
.faq-section{background:var(--bg)}
.faq-list{max-width:760px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--border);padding:0}
.faq-item:first-child{border-top:1px solid var(--border)}
.faq-q{display:flex;justify-content:space-between;align-items:center;padding:24px 0;cursor:pointer;font-size:16px;font-weight:600;color:var(--text);background:none;border:none;width:100%;text-align:left;transition:color .25s}
.faq-q:hover{color:var(--accent)}
.faq-q .faq-icon{width:24px;height:24px;position:relative;flex-shrink:0;transition:transform .3s}
.faq-q .faq-icon::before,.faq-q .faq-icon::after{content:'';position:absolute;background:var(--text-sec);border-radius:2px;transition:all .3s}
.faq-q .faq-icon::before{width:14px;height:2px;top:11px;left:5px}
.faq-q .faq-icon::after{width:2px;height:14px;top:5px;left:11px}
.faq-item.open .faq-q .faq-icon{transform:rotate(45deg)}
.faq-item.open .faq-q{color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0}
.faq-a .inner{padding:0 0 24px;font-size:14px;line-height:1.7;color:var(--text-sec)}
.faq-item.open .faq-a{max-height:300px}
.faq-more{text-align:center;margin-top:32px}
.faq-more a{color:var(--accent);font-weight:600;font-size:15px}
.faq-more a:hover{text-decoration:underline}

/* 转化表单 */
.contact-section{background:var(--white)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.contact-left .contact-title{font-family:var(--font-title);font-size:28px;margin-bottom:24px;line-height:1.3}
.contact-left .contact-desc{font-size:15px;color:var(--text-sec);line-height:1.7;margin-bottom:32px}
.contact-list{display:flex;flex-direction:column;gap:20px;margin-bottom:32px}
.contact-item{display:flex;gap:14px;align-items:flex-start}
.contact-item .ci-icon{width:36px;height:36px;border-radius:50%;background:rgba(16,53,47,.08);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.contact-item .ci-icon svg{width:17px;height:17px;stroke:var(--primary)}
.contact-item .ci-label{font-size:13px;color:var(--text-weak)}
.contact-item .ci-value{font-size:15px;color:var(--text);font-weight:500}
.contact-domain{display:inline-block;padding:8px 16px;background:var(--bg);border-radius:999px;font-size:13px;color:var(--text-sec);font-family:monospace}
.contact-form-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-card);padding:32px;box-shadow:var(--shadow-base)}
.contact-form-card h3{font-family:var(--font-title);font-size:20px;margin-bottom:24px}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px}
.form-group input,.form-group select,.form-group textarea{width:100%;height:44px;border:1px solid var(--border);border-radius:var(--radius-input);padding:0 14px;font-family:var(--font-body);font-size:14px;color:var(--text);background:var(--white);transition:all .25s}
.form-group textarea{height:100px;padding:12px 14px;resize:vertical}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px rgba(16,53,47,.15)}
.form-group select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235A6B65' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center}
.btn-submit{width:100%;height:48px;background:var(--accent);color:#fff;border:none;border-radius:var(--radius-btn);font-size:16px;font-weight:600;transition:all .25s}
.btn-submit:hover{background:var(--accent-hover);transform:translateY(-1px)}
.btn-submit:active{transform:translateY(1px)}
.btn-submit:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.form-privacy{font-size:12px;color:var(--text-weak);text-align:center;margin-top:16px}
@media(max-width:768px){
  .contact-grid{grid-template-columns:1fr}
  .contact-left .contact-title{font-size:24px}
}

/* 页脚 */
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.7);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-about .footer-logo{display:flex;align-items:center;gap:10px;font-family:var(--font-title);font-size:20px;color:#fff;font-weight:700;margin-bottom:16px}
.footer-about .footer-logo .logo-icon{width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,.15);display:flex;align-items:center;justify-content:center}
.footer-about p{font-size:14px;line-height:1.7}
.footer-col h4{font-family:var(--font-title);font-size:16px;color:#fff;margin-bottom:20px}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.65);transition:color .25s}
.footer-col ul a:hover{color:var(--accent)}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.65);margin-bottom:14px;align-items:flex-start}
.footer-contact svg{width:16px;height:16px;stroke:rgba(255,255,255,.5);flex-shrink:0;margin-top:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;text-align:center;font-size:12px;color:rgba(255,255,255,.4)}
@media(max-width:1024px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:768px){.footer-grid{grid-template-columns:1fr}}

/* 回到顶部 */
.back-top{position:fixed;bottom:32px;right:32px;width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;border:none;box-shadow:var(--shadow-hover);cursor:pointer;opacity:0;visibility:hidden;transition:all .3s;z-index:99}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{background:var(--primary-dark);transform:translateY(-2px)}

/* 动画 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root {
  --primary: #10352F;
  --primary-dark: #0B2621;
  --accent: #E8643A;
  --accent-hover: #D4532C;
  --bg: #F7F4EE;
  --white: #FFFFFF;
  --text: #1A2B27;
  --text-secondary: #5A6B65;
  --text-weak: #8A9691;
  --border: #DCE6E2;
  --radius-card: 14px;
  --radius-btn: 8px;
  --radius-badge: 999px;
  --shadow-sm: 0 1px 2px rgba(16,53,47,.06);
  --shadow-lg: 0 16px 32px -16px rgba(16,53,47,.18);
  --container: 1200px;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; font-size: 1rem; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

main { overflow: hidden; }

/* ==== 导航 ==== */
.main-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 244, 238, .92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  height: 72px;
  box-shadow: 0 1px 0 rgba(16,53,47,.08);
}

.main-nav .container {
  height: 72px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: .02em;
}

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
}

.logo-icon svg { width: 100%; height: 100%; }

.nav-list {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 16px;
  flex: 1;
}

.nav-list a {
  display: inline-block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: var(--radius-btn);
  transition: color .2s ease, background .2s ease;
  position: relative;
}

.nav-list a:hover {
  color: var(--accent);
  background: rgba(232, 100, 58, .06);
}

.nav-list a.active {
  color: var(--primary);
  font-weight: 600;
}

.nav-list a.active::after {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  box-shadow: 0 1px 2px rgba(232,100,58,.25);
  transition: background .25s ease, transform .25s ease, box-shadow .25s ease;
  white-space: nowrap;
}

.nav-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -8px rgba(232,100,58,.5);
}

.nav-cta:active { transform: translateY(0); }

.nav-cta:focus-visible, .nav-list a:focus-visible, .nav-logo:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  margin-left: auto;
  border-radius: var(--radius-btn);
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 24px;
  background: var(--primary);
  border-radius: 2px;
  transition: transform .3s ease, opacity .3s ease;
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-toggle:focus-visible { outline: 2px solid var(--primary); }

/* ==== 通用区块 ==== */
.section-block { padding: 96px 0; }

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-head h2 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-head p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==== 分类页 Hero ==== */
.cat-hero {
  position: relative;
  min-height: 320px;
  display: flex;
  align-items: center;
  background: linear-gradient(115deg, rgba(16,53,47,.78) 0%, rgba(11,38,33,.62) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color: #fff;
  padding: 72px 0;
}

.cat-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.cat-hero .badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.3);
  border-radius: var(--radius-badge);
  font-size: 13px;
  letter-spacing: .04em;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}

.cat-hero .badge svg { width: 14px; height: 14px; }

.cat-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: .01em;
  margin-bottom: 20px;
  text-shadow: 0 2px 12px rgba(0,0,0,.18);
}

.cat-hero p.cat-hero-desc {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255,255,255,.92);
  max-width: 560px;
  margin-bottom: 32px;
}

.cat-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  transition: background .25s ease, color .25s ease, transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }

.btn-outline-light {
  border: 1.5px solid rgba(255,255,255,.7);
  color: #fff;
  background: transparent;
}

.btn-outline-light:hover {
  background: rgba(255,255,255,.12);
  border-color: #fff;
  transform: translateY(-2px);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
  border: 1.5px solid var(--accent);
  box-shadow: 0 4px 16px -4px rgba(232,100,58,.45);
}

.btn-accent:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px -8px rgba(232,100,58,.55);
}

.btn-outline-primary {
  border: 1.5px solid var(--primary);
  color: var(--primary);
  background: transparent;
}

.btn-outline-primary:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -10px rgba(16,53,47,.5);
}

/* ==== 分类介绍 ==== */
.cat-intro { padding: 96px 0; }

.cat-intro-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 64px;
  align-items: center;
}

.cat-intro-content h2 {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 700;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 20px;
}

.cat-intro-content h2::before {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  margin-bottom: 20px;
}

.cat-intro-content p {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.cat-intro-media {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.cat-intro-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
  transition: transform .5s ease;
}

.cat-intro-media:hover img { transform: scale(1.03); }

.cat-intro-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(16,53,47,.25));
  pointer-events: none;
}

/* ==== 分类条目 ==== */
.cat-items { padding: 96px 0; background: var(--white); }

.cat-items-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 960px;
  margin: 0 auto;
}

.cat-item-card {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  overflow: hidden;
}

.cat-item-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(16,53,47,.2);
}

.cat-item-card:first-child {
  grid-column: 1 / -1;
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.cat-item-card:first-child .item-num { color: var(--accent); }
.cat-item-card:first-child .item-title { color: #fff; }
.cat-item-card:first-child .item-text { color: rgba(255,255,255,.82); }

.item-num {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
  display: block;
}

.item-title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.item-text {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text-secondary);
}

.item-tag {
  position: absolute;
  top: 24px;
  right: 24px;
  padding: 4px 12px;
  border-radius: var(--radius-badge);
  font-size: 12px;
  background: rgba(232,100,58,.12);
  color: var(--accent);
  font-weight: 500;
  letter-spacing: .02em;
}

.cat-item-card:first-child .item-tag {
  background: rgba(255,255,255,.14);
  color: #fff;
}

/* ==== 适用场景 / 流程 ==== */
.cat-scenarios { padding: 96px 0; background: var(--bg); }

.cat-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1080px;
  margin: 0 auto;
  position: relative;
}

.cat-steps::before {
  content: '';
  position: absolute;
  top: 44px;
  left: 10%;
  right: 10%;
  height: 1.5px;
  background: linear-gradient(90deg, var(--border), var(--accent), var(--border));
  border-radius: 1.5px;
  z-index: 0;
}

.step-item {
  position: relative;
  background: var(--white);
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  padding: 36px 24px 28px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform .3s ease, box-shadow .3s ease;
  z-index: 1;
}

.step-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #fff;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 18px;
  box-shadow: 0 0 0 6px rgba(16,53,47,.08);
}

.step-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.step-text {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
}

/* ==== FAQ ==== */
.cat-faq { padding: 96px 0; background: var(--white); }

.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
  background: transparent;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 0;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: color .25s ease;
}

.faq-question:hover { color: var(--accent); }

.faq-question:focus-visible { outline: 2px solid var(--primary); outline-offset: -2px; border-radius: 4px; }

.faq-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: transform .3s ease, background .3s ease;
}

.faq-icon::before { width: 12px; height: 2px; }
.faq-icon::after { width: 2px; height: 12px; }

.faq-item.active .faq-icon::before,
.faq-item.active .faq-icon::after {
  transform: rotate(45deg);
  background: var(--accent);
}

.faq-item.active .faq-icon::after { transform: rotate(-45deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease, padding .3s ease;
  padding: 0 32px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
}

.faq-item.active .faq-answer {
  max-height: 400px;
  padding-bottom: 24px;
}

.faq-more {
  text-align: center;
  margin-top: 40px;
  font-size: 15px;
}

.faq-more a {
  color: var(--accent);
  font-weight: 600;
  border-bottom: 1px solid rgba(232,100,58,.4);
  padding-bottom: 2px;
  transition: border-color .25s ease;
}

.faq-more a:hover { border-color: var(--accent); }

/* ==== CTA 区 ==== */
.cat-cta {
  padding: 96px 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  text-align: center;
}

.cat-cta-inner {
  max-width: 640px;
  margin: 0 auto;
}

.cat-cta h2 {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 16px;
}

.cat-cta p {
  font-size: 16px;
  color: rgba(255,255,255,.8);
  line-height: 1.75;
  margin-bottom: 32px;
}

/* ==== 页脚 ==== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,.85);
}

.site-footer .container { padding: 64px 24px 40px; }

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1.2fr;
  gap: 48px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-about p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,.7);
  max-width: 300px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: .03em;
}

.footer-col ul li { margin-bottom: 10px; }

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255,255,255,.68);
  transition: color .25s ease, padding-left .25s ease;
}

.footer-col ul li a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-col ul li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,.68);
}

.footer-col ul li svg {
  width: 18px;
  height: 18px;
  stroke: rgba(255,255,255,.8);
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  text-align: center;
  padding: 20px 24px;
  font-size: 12px;
  color: rgba(255,255,255,.5);
}

/* ==== 动效 ==== */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .5s ease, transform .5s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ==== 平板 ==== */
@media (max-width: 1023px) {
  .section-block { padding: 72px 0; }
  .cat-intro, .cat-items, .cat-scenarios, .cat-faq, .cat-cta { padding: 72px 0; }

  .cat-intro-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .cat-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .cat-steps::before { display: none; }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

/* ==== 移动端 ==== */
@media (max-width: 767px) {
  .container { padding: 0 20px; }

  .nav-list {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: flex-start;
    background: var(--bg);
    padding: 32px 24px;
    gap: 8px;
    display: none;
    z-index: 99;
    overflow-y: auto;
  }

  .nav-list.open { display: flex; }

  .nav-list a {
    display: block;
    width: 100%;
    font-size: 17px;
    padding: 14px 0;
    border-bottom: 1px solid rgba(16,53,47,.06);
    border-radius: 0;
  }

  .nav-list a.active::after { left: 0; bottom: 0; width: 32px; }

  .nav-cta { display: none; }

  .nav-toggle { display: flex; }

  .cat-hero { min-height: 280px; padding: 56px 0; }
  .cat-hero h1 { font-size: 30px; }
  .cat-hero p.cat-hero-desc { font-size: 15.5px; }

  .cat-hero-actions .btn { width: 100%; }

  .cat-items-grid { grid-template-columns: 1fr; }
  .cat-item-card:first-child { grid-column: auto; }

  .cat-steps { grid-template-columns: 1fr; }

  .cat-scenarios .section-head { margin-bottom: 40px; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }

  .section-head { margin-bottom: 40px; }
  .section-head h2 { font-size: 26px; }
}

@media (max-width: 520px) {
  .cat-intro-content h2 { font-size: 24px; }
  .step-item { padding: 28px 16px; }
}

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --primary: #10352F;
  --primary-dark: #0B2621;
  --accent: #E8643A;
  --accent-dark: #D4532C;
  --bg-warm: #F7F4EE;
  --bg-white: #FFFFFF;
  --text-main: #1A2B27;
  --text-secondary: #5A6B65;
  --text-muted: #8A9691;
  --border: #DCE6E2;
  --success: #2E7D5B;
  --warning: #B7791F;
  --error: #C0392B;
  --radius-card: 14px;
  --radius-btn: 8px;
  --radius-input: 8px;
  --shadow-sm: 0 1px 2px rgba(16,53,47,.06);
  --shadow-lg: 0 16px 32px -16px rgba(16,53,47,.18);
  --container: 1200px;
  --spacing-section: 96px;
  --spacing-section-mobile: 56px;
  --font-serif: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

/* ===== Reset / Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-warm);
  color: var(--text-main);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color .25s ease;
}

a:hover {
  color: var(--accent);
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

ul, ol {
  list-style: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  font-family: var(--font-serif);
  line-height: 1.25;
  color: var(--text-main);
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 15px;
  padding: 12px 28px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .25s ease;
  line-height: 1.4;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -8px rgba(232,100,58,.5);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateY(-1px);
}

.btn-outline:focus-visible,
.btn-primary:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

.btn-white {
  background: #fff;
  color: var(--primary);
  border-color: #fff;
}

.btn-white:hover {
  background: rgba(255,255,255,.88);
  color: var(--primary);
  border-color: rgba(255,255,255,.88);
}

/* ===== 顶部信息条 ===== */
.top-bar {
  background: var(--primary);
  height: 36px;
  display: flex;
  align-items: center;
  color: rgba(255,255,255,.85);
  font-size: 13px;
}

.top-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.top-bar-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,.9);
  font-size: 13px;
  border: 1px solid rgba(255,255,255,.35);
  border-radius: 999px;
  padding: 2px 14px;
  line-height: 1.6;
  transition: all .25s ease;
}

.top-bar-link:hover {
  background: rgba(255,255,255,.14);
  border-color: rgba(255,255,255,.6);
  color: #fff;
}

/* ===== 主导航 ===== */
.main-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247,244,238,.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: 72px;
  display: flex;
  align-items: center;
}

.main-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: .5px;
  flex-shrink: 0;
}

.nav-logo:hover {
  color: var(--primary);
}

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: rgba(232,100,58,.1);
  border-radius: 10px;
  overflow: hidden;
}

.logo-icon svg {
  width: 22px;
  height: 22px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: auto;
}

.nav-list a {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
  padding: 8px 2px;
  transition: color .25s ease;
}

.nav-list a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}

.nav-list a:hover {
  color: var(--primary);
}

.nav-list a.active {
  color: var(--primary);
  font-weight: 600;
}

.nav-list a.active::after {
  transform: scaleX(1);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  padding: 10px 22px;
  border: 1px solid var(--accent);
  transition: all .25s ease;
  flex-shrink: 0;
}

.nav-cta:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -8px rgba(232,100,58,.5);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 44px;
  height: 44px;
  position: relative;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  margin: 5px auto;
  transition: transform .3s ease, opacity .3s ease;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== 面包屑 ===== */
.breadcrumb-wrap {
  padding: 20px 0 4px;
  border-bottom: 1px solid rgba(220,230,226,.6);
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: color .25s ease;
}

.breadcrumb a:hover {
  color: var(--accent);
}

.breadcrumb-sep {
  color: rgba(138,150,145,.5);
}

.breadcrumb .current {
  color: var(--text-main);
  font-weight: 500;
  max-width: 260px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ===== 文章详情 ===== */
.article-main {
  padding: 56px 0 var(--spacing-section);
}

.article-detail {
  background: var(--bg-white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  padding: 56px 56px 48px;
  margin: 0 auto;
  max-width: 920px;
  border: 1px solid rgba(220,230,226,.5);
}

.article-header {
  max-width: 720px;
  margin: 0 auto 32px;
  text-align: left;
}

.article-cat-badge {
  display: inline-block;
  background: rgba(232,100,58,.1);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 999px;
  margin-bottom: 18px;
  letter-spacing: .3px;
}

.article-header h1 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 16px;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 13px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-meta svg {
  width: 14px;
  height: 14px;
  stroke: var(--text-muted);
}

.article-cover {
  margin: 0 auto 40px;
  max-width: 820px;
}

.article-cover img {
  width: 100%;
  height: auto;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: 12px;
}

/* ===== 正文排版 ===== */
.article-body {
  max-width: 720px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
}

.article-body p {
  margin-bottom: 18px;
  line-height: 1.75;
}

.article-body h2 {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 700;
  color: var(--primary);
  margin: 40px 0 18px;
}

.article-body h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin: 32px 0 16px;
}

.article-body h4 {
  font-size: 17px;
  font-weight: 600;
  margin: 24px 0 12px;
  color: var(--text-main);
}

.article-body a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(232,100,58,.35);
  transition: color .2s ease, text-decoration-color .2s ease;
}

.article-body a:hover {
  color: var(--accent-dark);
  text-decoration-color: var(--accent-dark);
}

.article-body blockquote {
  border-left: 3px solid var(--accent);
  background: rgba(232,100,58,.07);
  padding: 18px 22px;
  margin: 28px 0;
  border-radius: 0 8px 8px 0;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
}

.article-body blockquote p:last-child {
  margin-bottom: 0;
}

.article-body ul,
.article-body ol {
  margin: 20px 0 24px;
  padding-left: 24px;
}

.article-body ul li,
.article-body ol li {
  margin-bottom: 10px;
  line-height: 1.75;
  position: relative;
}

.article-body ul li::before {
  content: "";
  position: absolute;
  left: -18px;
  top: 12px;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

.article-body ol {
  counter-reset: item;
}

.article-body ol li {
  counter-increment: item;
}

.article-body ol li::before {
  content: counter(item) ".";
  position: absolute;
  left: -24px;
  color: var(--accent);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.article-body img {
  max-width: 100%;
  border-radius: 12px;
  margin: 28px 0;
}

.article-body figure {
  margin: 28px 0;
}

.article-body figcaption {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  margin-top: -14px;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 14px;
  background: var(--bg-white);
}

.article-body th,
.article-body td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}

.article-body th {
  background: rgba(16,53,47,.05);
  font-weight: 600;
}

.article-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}

/* ===== 文末标签 ===== */
.article-end {
  max-width: 720px;
  margin: 48px auto 0;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}

.tag {
  display: inline-flex;
  align-items: center;
  background: rgba(16,53,47,.06);
  color: var(--text-secondary);
  font-size: 13px;
  border-radius: 999px;
  padding: 4px 16px;
  transition: all .25s ease;
}

.tag:hover {
  background: var(--primary);
  color: #fff;
}

/* ===== 上一篇 / 下一篇 ===== */
.article-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.pager-link {
  display: block;
  background: rgba(16,53,47,.04);
  border: 1px solid rgba(16,53,47,.08);
  border-radius: 10px;
  padding: 16px 20px;
  transition: all .25s ease;
}

.pager-link:hover {
  background: rgba(16,53,47,.07);
  border-color: rgba(16,53,47,.18);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.pager-label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 6px;
  letter-spacing: 1px;
}

.pager-title {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pager-next {
  text-align: right;
}

.pager-empty {
  pointer-events: none;
  opacity: .55;
}

/* ===== 内容未找到 ===== */
.article-not-found {
  background: var(--bg-white);
  border-radius: var(--radius-card);
  border: 1px solid rgba(220,230,226,.5);
  box-shadow: var(--shadow-sm);
  max-width: 600px;
  margin: 40px auto 0;
  padding: 72px 40px;
  text-align: center;
}

.not-found-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  background: rgba(232,100,58,.08);
  border-radius: 50%;
  margin-bottom: 24px;
}

.not-found-icon svg {
  width: 34px;
  height: 34px;
}

.article-not-found h1 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
}

.article-not-found p {
  color: var(--text-secondary);
  margin-bottom: 28px;
  font-size: 15px;
}

/* ===== 相关推荐 ===== */
.related-section {
  padding: 0 0 var(--spacing-section);
}

.related-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.related-head h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-main);
  position: relative;
  padding-left: 16px;
}

.related-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 24px;
  background: var(--accent);
  border-radius: 2px;
}

.related-more {
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap .25s ease;
}

.related-more:hover {
  gap: 10px;
  color: var(--accent-dark);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.related-card {
  display: block;
  background: var(--bg-white);
  border-radius: var(--radius-card);
  border: 1px solid rgba(220,230,226,.5);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all .3s ease;
}

.related-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.related-thumb {
  overflow: hidden;
}

.related-thumb img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  transition: transform .4s ease;
}

.related-card:hover .related-thumb img {
  transform: scale(1.03);
}

.related-body {
  padding: 20px 22px 22px;
}

.related-cat {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(232,100,58,.08);
  border-radius: 999px;
  padding: 2px 12px;
  margin-bottom: 10px;
}

.related-body h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-main);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-date {
  font-size: 13px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

/* ===== CTA 条 ===== */
.cta-bar {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 52px 0;
  scroll-margin-top: 72px;
}

.cta-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.cta-text h3 {
  font-size: 26px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.cta-text p {
  color: rgba(255,255,255,.75);
  font-size: 15px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,.8);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.footer-about p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,.6);
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255,255,255,.65);
  transition: all .25s ease;
}

.footer-col ul li a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-contact ul li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,.65);
  line-height: 1.6;
}

.footer-contact svg {
  width: 15px;
  height: 15px;
  stroke: rgba(255,255,255,.5);
  flex-shrink: 0;
  margin-top: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,.45);
}

/* ===== 动效 ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===== 响应式断点 ===== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .article-detail {
    padding: 44px 40px 40px;
  }

  .nav-list {
    gap: 20px;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-section: 56px;
  }

  .container {
    padding: 0 20px;
  }

  .top-bar .container {
    justify-content: center;
  }

  .top-bar-link {
    display: none;
  }

  .main-nav {
    height: 64px;
  }

  .nav-list {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(247,244,238,.98);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 20px 32px;
    gap: 18px;
    box-shadow: 0 24px 40px -20px rgba(16,53,47,.2);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: all .3s ease;
    margin-left: 0;
    z-index: 99;
    border-bottom: 1px solid var(--border);
  }

  .nav-list.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-list a {
    font-size: 18px;
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid rgba(220,230,226,.4);
  }

  .nav-list a::after {
    display: none;
  }

  .nav-list a.active {
    color: var(--accent);
  }

  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .breadcrumb-wrap {
    padding: 16px 0 0;
  }

  .article-main {
    padding-top: 32px;
  }

  .article-detail {
    padding: 32px 20px 32px;
    border-radius: 12px;
  }

  .article-header h1 {
    font-size: 26px;
  }

  .article-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .article-cover {
    margin-bottom: 28px;
  }

  .article-body p,
  .article-body li {
    font-size: 15px;
  }

  .article-body h2 {
    font-size: 22px;
  }

  .article-body h3 {
    font-size: 18px;
  }

  .article-pager {
    grid-template-columns: 1fr;
  }

  .pager-next {
    text-align: left;
  }

  .related-section {
    padding-bottom: var(--spacing-section-mobile);
  }

  .related-head h2 {
    font-size: 24px;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }

  .cta-bar {
    padding: 40px 0;
  }

  .cta-bar-inner {
    flex-direction: column;
    text-align: center;
  }

  .cta-text h3 {
    font-size: 22px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 32px;
  }

  .footer-bottom {
    font-size: 12px;
  }

  .article-not-found {
    padding: 48px 24px;
  }

  .article-not-found h1 {
    font-size: 24px;
  }

  .breadcrumb .current {
    max-width: 180px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }

  .article-detail {
    padding: 28px 16px 28px;
  }

  .article-header h1 {
    font-size: 23px;
  }

  .article-body {
    font-size: 15px;
  }

  .related-card {
    margin-bottom: 0;
  }
}