/* roulang page: index */
:root {
    --primary: #1F4E4A;
    --primary-light: #2A635E;
    --primary-dark: #163B38;
    --accent: #C79A45;
    --accent-dark: #B58930;
    --accent-light: rgba(199,154,69,0.25);
    --bg: #F7F4EE;
    --bg-white: #FFFFFF;
    --text: #2C3A39;
    --text-light: #6B7A78;
    --text-white: #FFFFFF;
    --border: rgba(31,78,74,0.15);
    --radius-card: 12px;
    --radius-btn: 8px;
    --radius-pill: 999px;
    --shadow-card: 0 10px 30px rgba(31,78,74,0.06);
    --shadow-hover: 0 16px 40px rgba(31,78,74,0.12);
    --font-serif: "Source Han Serif SC","Noto Serif SC","Songti SC",SimSun,serif;
    --font-sans: "Source Han Sans SC","Noto Sans SC","Microsoft YaHei",PingFang SC,sans-serif;
    --container: 1200px;
    --spacer: 80px;
    --transition: 0.2s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
    font-family:var(--font-sans);
    background:var(--bg-white);
    color:var(--text);
    line-height:1.75;
    font-size:16px;
    -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--transition)}
ul,ol{list-style:none}
button,input{font-family:inherit;border:none;outline:none;background:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.btn{
    display:inline-flex;align-items:center;justify-content:center;
    min-height:48px;padding:0 28px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;cursor:pointer;transition:all var(--transition);
    line-height:1.2;gap:8px;
}
.btn-primary{
    background:var(--accent);color:var(--text-white);
}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(199,154,69,0.35)}
.btn-outline{
    border:1px solid var(--primary);color:var(--primary);background:transparent;
}
.btn-outline:hover{background:rgba(31,78,74,0.08);color:var(--primary-dark)}
.btn-light{
    background:var(--text-white);color:var(--primary);
}
.btn-light:hover{background:var(--bg);transform:translateY(-2px)}
.btn-ghost{
    border:1px solid rgba(255,255,255,0.6);color:var(--text-white);background:transparent;
}
.btn-ghost:hover{background:rgba(255,255,255,0.15);border-color:#fff}

.section-tag{
    display:inline-block;background:var(--accent-light);color:var(--accent-dark);
    font-size:13px;font-weight:600;padding:6px 18px;border-radius:var(--radius-pill);
    letter-spacing:1px;margin-bottom:16px;
}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--primary);line-height:1.4}
h2{font-size:clamp(1.8rem,3vw,2.8rem);margin-bottom:0.8em}
h3{font-size:1.4rem;margin-bottom:0.6em}
p{line-height:1.75;margin-bottom:1.5rem}

/* ===== Header ===== */
.site-header{
    position:fixed;top:0;left:0;right:0;z-index:1000;
    background:rgba(255,255,255,0.92);backdrop-filter:blur(12px);
    border-bottom:1px solid rgba(31,78,74,0.08);
    transition:box-shadow var(--transition);
}
.site-header.scrolled{box-shadow:0 6px 30px rgba(0,0,0,0.06)}
.header-inner{
    display:flex;align-items:center;justify-content:space-between;gap:24px;
    padding:14px 24px;max-width:var(--container);margin:0 auto;
}
.logo{
    display:flex;align-items:center;gap:10px;flex-shrink:0;
}
.logo-mark{
    width:38px;height:38px;border-radius:8px;
    background:var(--accent);color:#fff;
    display:flex;align-items:center;justify-content:center;
    font-family:var(--font-serif);font-weight:700;font-size:20px;
}
.logo-text{
    display:flex;flex-direction:column;line-height:1.2;
}
.logo-text strong{
    font-family:var(--font-serif);font-size:16px;color:var(--primary);
    white-space:nowrap;
}
.logo-text span{
    font-size:11px;color:var(--text-light);letter-spacing:2px;
}
.main-nav{
    display:flex;align-items:center;gap:6px;flex-shrink:0;
}
.nav-link{
    padding:8px 16px;font-size:14px;color:var(--text);
    border-radius:var(--radius-pill);font-weight:500;
    transition:all var(--transition);
}
.nav-link:hover{color:var(--accent-dark);background:var(--accent-light)}
.nav-link.active{color:var(--accent-dark);background:var(--accent-light);font-weight:600}
.search-wrap{
    flex:1;max-width:420px;display:flex;align-items:center;gap:10px;
    background:var(--bg-white);border:1px solid var(--border);
    border-radius:var(--radius-pill);height:40px;padding:0 16px;
    transition:border-color var(--transition),box-shadow var(--transition);
}
.search-wrap:focus-within{
    border-color:var(--accent);
    box-shadow:0 0 0 4px rgba(199,154,69,0.25);
}
.search-wrap svg{width:16px;height:16px;stroke:var(--text-light);flex-shrink:0}
.search-wrap input{
    flex:1;font-size:14px;color:var(--text);background:transparent;
    height:100%;
}
.search-wrap input::placeholder{color:var(--text-light)}
.header-cta{
    min-height:40px;padding:0 20px;font-size:13px;flex-shrink:0;
}
.mobile-search-toggle,.mobile-menu-toggle{
    display:none;width:40px;height:40px;border-radius:50%;
    align-items:center;justify-content:center;cursor:pointer;
    background:var(--bg);
}
.mobile-search-toggle svg,.mobile-menu-toggle svg{width:18px;height:18px;stroke:var(--text)}
.mobile-search-layer{
    display:none;position:fixed;top:0;left:0;right:0;z-index:1100;
    background:var(--bg-white);padding:16px 20px;box-shadow:0 10px 30px rgba(0,0,0,0.08);
}
.mobile-search-layer.open{display:block}
.mobile-search-layer .search-wrap{width:100%;max-width:100%}
.mobile-search-layer .close-search{
    position:absolute;top:14px;right:14px;width:32px;height:32px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;background:var(--bg);
    cursor:pointer;font-size:16px;color:var(--text);
}
@media(max-width:1023px){
    .main-nav{display:none}
    .search-wrap{display:none}
    .header-cta{display:none}
    .mobile-search-toggle,.mobile-menu-toggle{display:flex}
    .header-inner{gap:12px;flex-wrap:wrap}
}
.mobile-menu{
    display:none;position:fixed;top:64px;left:0;right:0;z-index:1050;
    background:var(--bg-white);box-shadow:0 20px 40px rgba(0,0,0,0.08);
    padding:16px 0;border-top:1px solid var(--border);
}
.mobile-menu.open{display:block}
.mobile-menu a{
    display:block;padding:14px 24px;font-size:16px;color:var(--text);border-bottom:1px solid rgba(31,78,74,0.06);
}
.mobile-menu a:last-child{border-bottom:none}
.mobile-menu a:hover{background:var(--bg);color:var(--accent-dark)}
.mobile-menu a.active{color:var(--accent-dark);font-weight:600}

/* ===== Hero ===== */
.hero{
    position:relative;min-height:620px;margin-top:0;padding-top:80px;
    background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    display:flex;align-items:center;
}
.hero::before{
    content:'';position:absolute;inset:0;
    background:linear-gradient(90deg,rgba(31,78,74,0.82) 0%,rgba(31,78,74,0.55) 55%,rgba(31,78,74,0.3) 100%);
}
.hero-inner{
    position:relative;z-index:1;display:flex;align-items:center;gap:48px;
    padding:80px 24px;width:100%;max-width:var(--container);margin:0 auto;
}
.hero-content{flex:0 0 55%;max-width:55%}
.hero-content h1{
    color:var(--text-white);font-size:clamp(2.4rem,5vw,4.2rem);
    line-height:1.25;margin-bottom:24px;font-weight:700;
}
.hero-sub{
    font-size:18px;line-height:1.75;color:rgba(255,255,255,0.85);
    margin-bottom:36px;max-width:480px;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-cover{
    flex:0 0 38%;max-width:38%;position:relative;
}
.hero-cover img{
    width:100%;height:auto;max-height:520px;object-fit:cover;
    border-radius:16px;border:1px solid rgba(255,255,255,0.4);
    box-shadow:0 30px 60px rgba(0,0,0,0.3);
}
@media(max-width:1023px){
    .hero{padding-top:64px;min-height:auto}
    .hero-inner{flex-direction:column;padding:48px 24px;gap:32px}
    .hero-content,.hero-cover{flex:0 0 100%;max-width:100%}
    .hero-cover img{max-height:400px}
}
@media(max-width:768px){
    .hero-content h1{font-size:2.2rem}
    .hero-sub{font-size:16px}
}

/* ===== About Section ===== */
.about-section{
    background:var(--bg-white);padding:var(--spacer) 0;
}
.about-grid{
    display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
}
.about-text .section-tag{margin-bottom:12px}
.about-text h2{margin-bottom:20px}
.about-text p{color:var(--text);font-size:16px}
.feature-list{
    margin-top:24px;display:grid;grid-template-columns:1fr 1fr;gap:16px;
}
.feature-list li{
    position:relative;padding-left:24px;font-weight:500;font-size:15px;color:var(--text);
}
.feature-list li::before{
    content:'';position:absolute;left:4px;top:9px;width:8px;height:8px;
    background:var(--accent);border-radius:50%;
}
.about-images{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.about-images img{
    width:100%;height:220px;object-fit:cover;border-radius:var(--radius-card);
    transition:transform var(--transition);
}
.about-images img:hover{transform:scale(1.04)}
@media(max-width:1023px){
    .about-grid{grid-template-columns:1fr;gap:32px}
    .about-images img{height:180px}
}
@media(max-width:520px){
    .feature-list{grid-template-columns:1fr}
}

/* ===== Features ===== */
.features-section{
    background:var(--bg);padding:var(--spacer) 0;
}
.section-head{
    text-align:center;margin-bottom:48px;
}
.section-head h2{margin-bottom:0}
.features-scroll{
    display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
    overflow-x:auto;padding-bottom:8px;
}
.feature-card{
    background:var(--bg-white);border-radius:var(--radius-card);
    padding:32px 24px;box-shadow:var(--shadow-card);
    border:1px solid transparent;transition:all var(--transition);
    min-width:280px;
}
.feature-card:hover{
    transform:translateY(-4px);border-color:var(--accent);
    box-shadow:var(--shadow-hover);
}
.feature-card .icon{
    width:48px;height:48px;border-radius:12px;background:var(--accent-light);
    display:flex;align-items:center;justify-content:center;margin-bottom:20px;
}
.feature-card .icon svg{width:22px;height:22px;stroke:var(--accent-dark);fill:none;stroke-width:2}
.feature-card h3{font-size:1.15rem;margin-bottom:12px}
.feature-card p{font-size:14px;color:var(--text-light);line-height:1.7;margin-bottom:16px}
.feature-card .more-link{
    font-size:13px;color:var(--accent-dark);font-weight:600;
    display:inline-flex;align-items:center;gap:4px;
}
.feature-card .more-link:hover{gap:8px}
@media(max-width:1023px){
    .features-scroll{grid-template-columns:repeat(2,1fr);overflow:visible}
}
@media(max-width:560px){
    .features-scroll{grid-template-columns:1fr;min-width:0}
}

/* ===== Process ===== */
.process-section{
    background:var(--bg-white);padding:var(--spacer) 0;
}
.process-grid{
    display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start;
}
.process-timeline{
    position:relative;padding-left:40px;
}
.process-timeline::before{
    content:'';position:absolute;left:15px;top:10px;bottom:10px;width:2px;
    background:rgba(199,154,69,0.35);
}
.timeline-item{
    position:relative;padding:24px 0;padding-left:20px;
}
.timeline-item::before{
    content:'';position:absolute;left:-32px;top:35px;width:14px;height:14px;
    background:var(--accent);border-radius:50%;border:3px solid var(--bg-white);
    box-shadow:0 0 0 2px var(--accent);
}
.timeline-num{
    font-family:var(--font-serif);font-size:14px;color:var(--accent);
    font-weight:700;letter-spacing:1px;display:block;margin-bottom:8px;
}
.timeline-content h3{font-size:1.2rem;margin-bottom:8px}
.timeline-content p{font-size:15px;color:var(--text-light);margin-bottom:0;line-height:1.7}
.process-side{
    background:var(--bg);border-radius:16px;padding:40px 32px;
    border:1px solid var(--border);position:sticky;top:100px;
}
.process-side h3{font-size:1.5rem;margin-bottom:16px}
.process-side p{font-size:14px;color:var(--text-light)}
.process-side .btn{width:100%;margin-bottom:16px}
.consult-phone{
    text-align:center;font-size:13px;color:var(--text-light);margin-top:8px;
}
.consult-phone a{color:var(--accent-dark);font-weight:700;font-size:18px}
@media(max-width:1023px){
    .process-grid{grid-template-columns:1fr;gap:32px}
    .process-side{position:static;top:auto}
}

/* ===== CTA Banner ===== */
.cta-banner{
    position:relative;padding:80px 0;text-align:center;overflow:hidden;
    background:linear-gradient(135deg,#f5ead6 0%,#faf3e6 60%,#efe0c4 100%);
}
.cta-banner::before{
    content:'';position:absolute;inset:0;
    background-image:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 0l4 8-4 8-4-8zM0 30l8-4 8 4-8 4zm60 0l-8-4-8 4 8 4zM30 44l4-8-4-8-4 8z' fill='%23c79a45' fill-opacity='0.08'/%3E%3C/svg%3E");
    background-size:80px 80px;
}
.cta-banner .container{position:relative;z-index:1}
.cta-banner h2{
    color:var(--primary);margin-bottom:24px;
}
.cta-banner .btn{margin-bottom:16px}
.cta-phone{
    display:block;font-size:15px;color:var(--text-light);
}
.cta-phone strong{
    color:var(--accent-dark);font-size:22px;margin-left:8px;
}

/* ===== News Section ===== */
.news-section{
    background:var(--bg);padding:var(--spacer) 0;
}
.news-list{
    display:flex;flex-direction:column;gap:15px;margin-top:32px;
}
.news-card{
    display:flex;background:var(--bg-white);border-radius:var(--radius-card);
    padding:16px;box-shadow:var(--shadow-card);border:1px solid transparent;
    transition:all var(--transition);min-height:140px;
}
.news-card:hover{
    transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--accent);
}
.news-thumb{
    flex:0 0 160px;height:120px;border-radius:8px;overflow:hidden;
}
.news-thumb img{
    width:100%;height:100%;object-fit:cover;transition:transform var(--transition);
}
.news-card:hover img{transform:scale(1.04)}
.news-info{
    flex:1;padding-left:20px;display:flex;flex-direction:column;
    justify-content:center;
}
.news-meta{
    display:flex;align-items:center;gap:12px;margin-bottom:8px;
}
.badge{
    display:inline-block;background:var(--accent-light);color:var(--accent-dark);
    font-size:12px;font-weight:600;padding:4px 14px;border-radius:var(--radius-pill);
}
.news-date{
    font-size:13px;color:var(--text-light);
}
.news-title{
    font-family:var(--font-sans);font-size:18px;font-weight:600;
    color:var(--text);margin-bottom:6px;line-height:1.4;
}
.news-title a:hover{color:var(--accent-dark)}
.news-desc{
    font-size:14px;color:var(--text-light);line-height:1.6;
    margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-link{
    font-size:13px;color:var(--accent-dark);font-weight:600;
    display:inline-flex;align-items:center;gap:4px;
}
.news-link:hover{gap:8px}
.empty-state{
    display:flex;flex-direction:column;align-items:center;justify-content:center;
    height:160px;border:2px dashed #DDD;border-radius:var(--radius-card);
    background:#FAFAF7;
}
.empty-state svg{width:32px;height:32px;stroke:#CCC;margin-bottom:12px}
.empty-state p{color:var(--text-light);font-size:14px;margin-bottom:0}
@media(max-width:768px){
    .news-card{flex-direction:column;padding:12px}
    .news-thumb{flex:0 0 100%;height:160px;width:100%}
    .news-info{padding-left:0;padding-top:14px}
}

/* ===== FAQ ===== */
.faq-section{
    background:var(--bg-white);padding:var(--spacer) 0;
}
.faq-list{
    max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px;
}
.faq-item{
    background:var(--bg);border-radius:var(--radius-card);
    border:1px solid transparent;transition:all var(--transition);overflow:hidden;
}
.faq-item.open{
    border-color:var(--accent);background:var(--bg-white);
    box-shadow:var(--shadow-card);
}
.faq-question{
    width:100%;display:flex;align-items:center;justify-content:space-between;
    padding:20px 24px;font-size:15px;font-weight:600;color:var(--text);
    cursor:pointer;text-align:left;font-family:var(--font-sans);
}
.faq-question .faq-icon{
    width:28px;height:28px;border-radius:50%;background:var(--accent-light);
    display:flex;align-items:center;justify-content:center;flex-shrink:0;
    font-size:16px;color:var(--accent-dark);transition:all var(--transition);
}
.faq-item.open .faq-icon{
    background:var(--accent);color:#fff;
    transform:rotate(45deg);
}
.faq-answer{
    padding:0 24px;max-height:0;overflow:hidden;transition:max-height 0.3s ease;
}
.faq-item.open .faq-answer{
    max-height:300px;padding-bottom:20px;
    border-top:1px solid var(--accent-light);
    padding-top:16px;
}
.faq-answer p{font-size:14px;color:var(--text-light);line-height:1.7;margin-bottom:0}

/* ===== Footer ===== */
.site-footer{
    background:var(--primary);color:rgba(255,255,255,0.8);padding:64px 0 24px;
}
.footer-grid{
    display:grid;grid-template-columns:3fr 2fr 3fr 2fr;gap:40px;margin-bottom:48px;
}
.footer-grid h4{
    color:var(--text-white);font-size:16px;margin-bottom:16px;font-family:var(--font-sans);
}
.footer-brand .footer-logo{
    display:flex;align-items:center;gap:10px;margin-bottom:16px;
    color:var(--text-white);font-family:var(--font-serif);font-size:18px;
}
.footer-brand .footer-logo .logo-mark{font-size:16px;width:30px;height:30px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,0.6)}
.footer-nav{display:flex;flex-direction:column;gap:10px}
.footer-nav a{
    font-size:14px;color:rgba(255,255,255,0.7);transition:color var(--transition);
}
.footer-nav a:hover{color:var(--accent)}
.footer-contact p{
    font-size:14px;line-height:1.8;color:rgba(255,255,255,0.6);margin-bottom:8px;
}
.footer-contact a{color:rgba(255,255,255,0.7)}
.footer-contact a:hover{color:var(--accent)}
.footer-copyright{
    border-top:1px solid rgba(255,255,255,0.12);padding-top:24px;
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    font-size:13px;color:rgba(255,255,255,0.45);
}
@media(max-width:1023px){
    .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
    .footer-grid{grid-template-columns:1fr;gap:32px}
    .footer-copyright{flex-direction:column;text-align:center}
}

/* ===== Section spacing ===== */
@media(max-width:768px){
    :root{--spacer:48px}
    .container{padding:0 16px}
    h2{font-size:1.8rem}
}

/* ===== Focus ===== */
a:focus-visible,button:focus-visible,input:focus-visible{
    outline:2px solid var(--accent);outline-offset:2px;
}

/* roulang page: category1 */
:root {
  --primary: #1F4E4A;
  --primary-600: #173D3A;
  --primary-300: #5B8A83;
  --accent: #C79A45;
  --accent-600: #B58930;
  --accent-100: #F3E6CC;
  --bg: #F7F4EE;
  --white: #FFFFFF;
  --text: #2C3332;
  --text-muted: #6B7371;
  --border: rgba(31, 78, 74, 0.14);
  --border-light: rgba(31, 78, 74, 0.08);
  --shadow: 0 10px 30px rgba(31, 78, 74, 0.06);
  --shadow-lg: 0 16px 40px rgba(31, 78, 74, 0.12);
  --shadow-accent: 0 8px 24px rgba(199, 154, 69, 0.25);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --container: 1200px;
  --spacer: 80px;
  --font-serif: Georgia, "Songti SC", "SimSun", "STSong", serif;
  --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --transition: 0.2s ease;
}

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

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

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

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

button, input { font-family: inherit; outline: none; }

h1, h2, h3, h4, h5 {
  font-family: var(--font-serif);
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 0.6em;
}

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

section { padding: var(--spacer) 0; }

.section-white { background: var(--white); }

.section-head { margin-bottom: 48px; max-width: 720px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-tag {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--accent-600);
  text-transform: uppercase;
  margin-bottom: 12px;
  font-weight: 700;
}
.section-head h2 { font-size: clamp(1.8rem, 3vw, 2.8rem); }
.section-head p { color: var(--text-muted); font-size: 16px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1.4;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-accent);
}
.btn-primary:hover {
  background: var(--accent-600);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 10px 28px rgba(181, 137, 48, 0.3);
}
.btn-outline-light {
  border-color: rgba(255, 255, 255, 0.6);
  color: #fff;
  background: transparent;
}
.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  color: #fff;
}
.btn-outline-primary {
  border-color: var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline-primary:hover {
  background: rgba(31, 78, 74, 0.06);
  color: var(--primary);
}
.btn-block { width: 100%; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.93);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 6px 20px rgba(31, 78, 74, 0.05);
}
.header-inner {
  display: flex;
  align-items: center;
  height: 72px;
  gap: 24px;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-600));
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 20px;
  font-family: Georgia, serif;
  box-shadow: var(--shadow-accent);
}
.logo-text h2 {
  font-size: 19px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  margin: 0;
}
.logo-text small {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-sans);
  letter-spacing: 0.08em;
  margin-top: 1px;
}
.header-center {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
}
.main-nav { display: flex; gap: 28px; }
.main-nav .nav-link {
  font-size: 15px;
  color: var(--text);
  position: relative;
  padding: 6px 2px;
  white-space: nowrap;
}
.main-nav .nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}
.main-nav .nav-link:hover { color: var(--primary); }
.main-nav .nav-link:hover::after,
.main-nav .nav-link.active::after { width: 100%; }
.main-nav .nav-link.active { color: var(--primary); font-weight: 600; }
.header-search {
  display: flex;
  align-items: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  height: 40px;
  min-width: 220px;
  max-width: 300px;
  padding: 0 8px 0 14px;
  gap: 8px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.header-search:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(199, 154, 69, 0.2);
}
.header-search .search-icon { color: var(--text-muted); flex-shrink: 0; }
.header-search input {
  border: none;
  flex: 1;
  min-width: 0;
  background: transparent;
  font-size: 14px;
}
.header-search input::placeholder { color: #A6ACA9; }
.search-close {
  display: none;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 20px;
  line-height: 1;
  padding: 2px 4px;
}
.btn-header { min-height: 40px; padding: 0 20px; font-size: 14px; }
.search-toggle, .menu-toggle { display: none; }
.search-toggle {
  border: none;
  background: none;
  color: var(--primary);
  padding: 6px;
}
.menu-toggle {
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 6px;
}
.menu-toggle span {
  width: 22px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}
.mobile-menu { display: none; }
.mobile-search-layer { display: none; }

/* Page Hero */
.page-hero {
  position: relative;
  background-size: cover;
  background-position: center;
  min-height: 560px;
  display: flex;
  align-items: center;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(31, 78, 74, 0.92) 0%, rgba(31, 78, 74, 0.64) 52%, rgba(31, 78, 74, 0.32) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  padding-top: 60px;
  padding-bottom: 60px;
  color: #fff;
}
.hero-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.14);
  color: var(--accent);
  border: 1px solid rgba(199, 154, 69, 0.5);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  font-size: 13px;
  letter-spacing: 0.15em;
  margin-bottom: 20px;
}
.page-hero h1 {
  color: #fff;
  font-size: clamp(2.6rem, 5vw, 4rem);
  line-height: 1.15;
  margin-bottom: 0.35em;
}
.hero-sub {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.9);
  max-width: 540px;
  margin-bottom: 36px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* Intro */
.intro-grid {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 56px;
  align-items: center;
}
.intro-text .section-tag { margin-bottom: 14px; }
.intro-text h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); margin-bottom: 20px; }
.intro-text p { color: var(--text); margin-bottom: 1.2em; }
.point-list {
  list-style: none;
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 24px;
}
.point-list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  color: var(--text);
}
.point-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}
.intro-media img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
}

/* Service Cards */
.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.service-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
}
.card-media { height: 220px; overflow: hidden; }
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.service-card:hover .card-media img { transform: scale(1.04); }
.card-body { padding: 28px; }
.card-body h3 { font-size: 22px; margin-bottom: 10px; }
.card-body p { color: var(--text-muted); font-size: 15px; margin-bottom: 16px; }
.text-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-600);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.text-link:hover { color: var(--primary); }

/* Process Timeline */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 24px auto 0;
  padding: 40px 0 0;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
  transform: translateX(-50%);
}
.timeline-item {
  position: relative;
  width: 50%;
  padding-right: 48px;
  margin-bottom: 48px;
}
.timeline-item:nth-child(even) {
  margin-left: 50%;
  padding-right: 0;
  padding-left: 48px;
}
.timeline-card {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.timeline-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
}
.timeline-num {
  font-size: 40px;
  font-weight: 800;
  color: var(--accent);
  font-family: Georgia, serif;
  line-height: 1;
  display: block;
  margin-bottom: 12px;
  opacity: 0.85;
}
.timeline-card h3 { font-size: 20px; margin-bottom: 8px; }
.timeline-card p { color: var(--text-muted); font-size: 14px; margin: 0; }
.timeline-item::after {
  content: "";
  position: absolute;
  top: 32px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(199, 154, 69, 0.2);
}
.timeline-item:nth-child(odd)::after { right: -6px; }
.timeline-item:nth-child(even)::after { left: -6px; }

/* Content + Sidebar */
.content-sidebar-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  align-items: start;
}
.main-content h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); margin-bottom: 20px; }
.main-content p { color: var(--text); margin-bottom: 1.2em; }
.data-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 32px 0;
}
.data-item {
  text-align: center;
  background: var(--bg);
  border-radius: var(--radius);
  padding: 24px 16px;
  border: 1px solid var(--border-light);
}
.data-item strong {
  display: block;
  font-size: 32px;
  color: var(--accent-600);
  font-family: var(--font-serif);
  line-height: 1.2;
  margin-bottom: 4px;
}
.data-item span { font-size: 13px; color: var(--text-muted); }
.check-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 28px 0;
}
.check-list li {
  position: relative;
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 14px 16px 14px 42px;
  font-size: 14px;
  box-shadow: var(--shadow);
  color: var(--text);
}
.check-list li::before {
  content: "✓";
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  display: grid;
  place-items: center;
  line-height: 1;
}
.sidebar { display: grid; gap: 24px; position: sticky; top: 96px; }
.sidebar-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow);
}
.sidebar-card h4 {
  font-size: 18px;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 12px;
}
.sidebar-card h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 32px;
  height: 2px;
  background: var(--accent);
}
.sidebar-card ul { list-style: none; }
.sidebar-card li {
  padding: 8px 0;
  border-bottom: 1px dashed var(--border-light);
  font-size: 14px;
}
.sidebar-card li:last-child { border-bottom: none; }
.sidebar-card li a { color: var(--text); }
.sidebar-card li a:hover { color: var(--accent-600); }
.sidebar-card p { font-size: 14px; color: var(--text-muted); margin-bottom: 8px; }
.sidebar-cta { background: var(--bg); }
.sidebar-cta .btn { margin-top: 8px; }

/* FAQ */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}
.faq-item {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: color var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--primary); }
.faq-item summary::after {
  content: "+";
  font-size: 24px;
  color: var(--accent);
  font-weight: 400;
  transition: transform var(--transition);
  line-height: 1;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-body {
  padding: 0 24px 20px;
  border-top: 1px solid var(--border-light);
  padding-top: 16px;
  color: var(--text-muted);
  font-size: 15px;
}
.faq-item .faq-body p { margin: 0; }

/* CTA */
.cta-section { background: var(--bg); }
.cta-box {
  position: relative;
  background: linear-gradient(135deg, var(--primary), var(--primary-600));
  border-radius: 16px;
  padding: 56px;
  text-align: center;
  overflow: hidden;
}
.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("/assets/images/backpic/back-2.webp") center / cover no-repeat;
  opacity: 0.08;
}
.cta-box > * { position: relative; z-index: 1; }
.cta-box h2 {
  color: #fff;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin-bottom: 0.4em;
}
.cta-box p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 28px;
  font-size: 16px;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.site-footer {
  background: var(--primary-600);
  color: rgba(255, 255, 255, 0.85);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand .footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  color: #fff;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
}
.footer-brand .footer-logo:hover { color: var(--accent); }
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.75);
  max-width: 320px;
}
.footer-nav { display: flex; flex-direction: column; gap: 10px; }
.footer-nav h4,
.footer-contact h4 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 8px;
}
.footer-nav a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
}
.footer-nav a:hover { color: var(--accent); }
.footer-contact p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 8px;
}
.footer-contact a { color: rgba(255, 255, 255, 0.85); }
.footer-contact a:hover { color: var(--accent); }
.footer-copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}
.footer-copyright p { margin: 0; }

/* Focus accessibility */
a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Responsive */
@media (max-width: 1024px) {
  .header-center { gap: 16px; }
  .main-nav { gap: 18px; }
  .content-sidebar-grid { grid-template-columns: 1fr; }
  .sidebar { position: static; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
  .intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .intro-media img { max-height: 420px; object-fit: cover; }
}

@media (max-width: 768px) {
  :root { --spacer: 48px; }
  section { padding: 48px 0; }
  .header-inner {
    height: auto;
    flex-wrap: wrap;
    padding: 14px 16px;
    gap: 12px;
  }
  .brand-logo { margin-right: auto; }
  .logo-text h2 { font-size: 16px; }
  .logo-text small { font-size: 9px; }
  .logo-mark { width: 34px; height: 34px; font-size: 18px; }
  .header-center { order: 3; width: 100%; justify-content: flex-start; }
  .header-search { display: none; }
  .search-toggle { display: inline-flex; }
  .menu-toggle { display: inline-flex; }
  .btn-header { display: none; }
  .mobile-search-layer {
    display: none;
    width: 100%;
    background: #fff;
    border-top: 1px solid var(--border-light);
    padding: 14px 0;
  }
  .mobile-search-layer.show { display: block; }
  .mobile-search-layer .mobile-search-box {
    display: flex;
    align-items: center;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    height: 42px;
    padding: 0 16px;
    gap: 10px;
  }
  .mobile-search-layer input {
    border: none;
    flex: 1;
    background: transparent;
    font-size: 15px;
  }
  .mobile-search-layer .search-icon { color: var(--text-muted); }
  .mobile-menu {
    display: none;
    width: 100%;
    order: 4;
    gap: 20px;
    overflow-x: auto;
    padding: 0;
    white-space: nowrap;
  }
  .mobile-menu.open { display: flex; }
  .mobile-menu .nav-link {
    font-size: 15px;
    padding: 4px 0;
    color: var(--text);
  }
  .mobile-menu .nav-link.active { color: var(--accent-600); font-weight: 600; }
  .page-hero { min-height: 480px; }
  .hero-content { padding-top: 40px; padding-bottom: 40px; }
  .service-grid { grid-template-columns: 1fr; gap: 24px; }
  .card-media { height: 200px; }
  .timeline::before { left: 12px; transform: none; }
  .timeline-item {
    width: 100%;
    padding-left: 40px;
    padding-right: 0;
    margin-bottom: 36px;
  }
  .timeline-item:nth-child(even) { margin-left: 0; padding-left: 40px; }
  .timeline-item::after, .timeline-item:nth-child(odd)::after, .timeline-item:nth-child(even)::after {
    left: 6px;
    right: auto;
  }
  .data-strip { grid-template-columns: 1fr; gap: 12px; }
  .check-list { grid-template-columns: 1fr; }
  .cta-box { padding: 40px 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .intro-media img { max-height: 320px; object-fit: cover; }
  .point-list { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
  .cta-actions .btn { width: 100%; }
  .page-hero h1 { font-size: 2.2rem; }
  .hero-sub { font-size: 16px; }
  .timeline-card { padding: 20px; }
}

/* roulang page: article */
:root {
            --primary: #1F4E4A;
            --primary-dark: #163A37;
            --primary-soft: rgba(31, 78, 74, 0.08);
            --accent: #C79A45;
            --accent-dark: #B58930;
            --accent-soft: rgba(199, 154, 69, 0.16);
            --bg: #F7F4EE;
            --bg-deep: #F1EBE1;
            --card-bg: #FFFFFF;
            --text: #1F2933;
            --text-weak: #6B7280;
            --border: rgba(31, 78, 74, 0.12);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-pill: 999px;
            --shadow-card: 0 10px 30px rgba(31, 78, 74, 0.06);
            --shadow-hover: 0 12px 40px rgba(31, 78, 74, 0.12);
            --font-heading: "Noto Serif SC", "Source Han Serif SC", "Songti SC", SimSun, serif;
            --font-body: "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
            --container: 1200px;
            --space-section: 80px;
        }

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

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

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

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 32px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 48px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            cursor: pointer;
            transition: all 0.2s ease;
            border: 1px solid transparent;
            white-space: nowrap;
        }

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

        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(199, 154, 69, 0.32);
        }

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

        .btn-outline:hover {
            background: var(--primary-soft);
        }

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

        /* ========= Header ========= */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(31, 78, 74, 0.08);
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 20px 40px rgba(31, 78, 74, 0.08);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            height: 76px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--accent);
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            border-radius: 8px;
            font-family: Georgia, serif;
            box-shadow: 0 4px 14px rgba(199, 154, 69, 0.28);
        }

        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.25;
        }

        .brand-text strong {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.02em;
            font-family: var(--font-heading);
        }

        .brand-text small {
            font-size: 12px;
            color: var(--text-weak);
            letter-spacing: 0.06em;
            margin-top: 2px;
        }

        .search-box {
            display: flex;
            align-items: center;
            flex: 1;
            max-width: 360px;
            min-width: 220px;
            height: 40px;
            background: #fff;
            border: 1px solid rgba(31, 78, 74, 0.15);
            border-radius: var(--radius-pill);
            padding: 0 16px;
            gap: 8px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .search-box .search-icon {
            flex-shrink: 0;
            color: var(--primary);
            opacity: 0.6;
        }

        .search-box input {
            flex: 1;
            font-size: 14px;
            color: var(--text);
            caret-color: var(--accent);
        }

        .search-box input::placeholder {
            color: #9AA5A1;
        }

        .search-box:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(199, 154, 69, 0.18);
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--primary);
            border-radius: 6px;
            transition: background 0.2s ease, color 0.2s ease;
        }

        .nav-link:hover {
            background: var(--primary-soft);
            color: var(--primary-dark);
        }

        .nav-link.active {
            background: var(--primary);
            color: #fff;
        }

        .nav-link:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .header-cta {
            min-height: 42px;
            padding: 0 20px;
            font-size: 14px;
        }

        .header-icon {
            display: none;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 8px;
            color: var(--primary);
            cursor: pointer;
            transition: background 0.2s ease;
        }

        .header-icon:hover {
            background: var(--primary-soft);
        }

        .menu-toggle {
            flex-direction: column;
            gap: 5px;
        }

        .menu-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: transform 0.2s ease, opacity 0.2s ease;
        }

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

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

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

        .mobile-search-layer {
            display: none;
            padding: 0 16px 16px;
            background: #fff;
            border-bottom: 1px solid rgba(31, 78, 74, 0.08);
        }

        .mobile-search-layer.open {
            display: block;
        }

        /* ========= 文章页 ========= */
        .article-main {
            background: var(--bg);
            padding: 48px 0 80px;
        }

        .article-wrapper {
            max-width: 920px;
            margin: 0 auto;
        }

        /* 面包屑 */
        .article-breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 24px;
        }

        .article-breadcrumb a {
            color: var(--primary);
            transition: color 0.2s ease;
        }

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

        .article-breadcrumb .sep {
            color: #C4C4C4;
        }

        .article-breadcrumb .current {
            color: var(--text);
            font-weight: 500;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 320px;
        }

        /* SEO 横幅 */
        .article-seo-banner {
            background: linear-gradient(135deg, rgba(247, 244, 238, 0.92), rgba(255, 255, 255, 0.98));
            border: 1px solid rgba(31, 78, 74, 0.08);
            border-left: 8px solid var(--accent);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            margin-bottom: 40px;
            box-shadow: var(--shadow-card);
        }

        .article-seo-banner .seo-title {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .article-seo-banner .seo-desc {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-weak);
            margin: 0;
        }

        /* 文章卡片 */
        .article-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            border: 1px solid rgba(31, 78, 74, 0.06);
            box-shadow: var(--shadow-card);
            padding: 48px 56px;
            margin-bottom: 48px;
        }

        .article-header {
            margin-bottom: 36px;
            border-bottom: 1px solid rgba(31, 78, 74, 0.08);
            padding-bottom: 28px;
        }

        .article-header h1 {
            font-family: var(--font-heading);
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            line-height: 1.4;
            color: var(--primary);
            border-left: 4px solid var(--accent);
            padding-left: 20px;
            margin-bottom: 18px;
            font-weight: 700;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            font-size: 14px;
            color: var(--text-weak);
        }

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

        .article-meta .meta-category {
            background: var(--accent-soft);
            color: var(--accent-dark);
            padding: 3px 12px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
        }

        /* 正文 */
        .article-content {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            max-width: 820px;
            margin: 0 auto;
        }

        .article-content p {
            margin-bottom: 1.5em;
        }

        .article-content h1,
        .article-content h2 {
            font-size: 24px;
            font-family: var(--font-heading);
            color: var(--primary);
            margin: 2em 0 1em;
            font-weight: 700;
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 20px;
            font-family: var(--font-heading);
            color: var(--primary);
            margin: 1.8em 0 0.8em;
            font-weight: 700;
            line-height: 1.4;
        }

        .article-content h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            margin: 1.5em 0 0.6em;
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(247, 244, 238, 0.6);
            padding: 16px 24px;
            margin: 1.5em 0;
            border-radius: 0 var(--radius-btn) var(--radius-btn) 0;
            color: var(--text);
            font-family: var(--font-heading);
            font-style: normal;
        }

        .article-content blockquote p {
            margin-bottom: 0.5em;
        }

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

        .article-content img {
            max-width: 100%;
            border-radius: var(--radius-card);
            margin: 1.8em auto;
        }

        .article-content ul,
        .article-content ol {
            padding-left: 1.5em;
            margin: 1.2em 0;
        }

        .article-content ul {
            list-style: disc;
        }

        .article-content ol {
            list-style: decimal;
        }

        .article-content ul li,
        .article-content ol li {
            margin-bottom: 0.45em;
            padding-left: 0.2em;
        }

        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-color: rgba(31, 78, 74, 0.3);
            transition: text-decoration-color 0.2s ease;
        }

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

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.8em 0;
            font-size: 15px;
        }

        .article-content table th,
        .article-content table td {
            border: 1px solid rgba(31, 78, 74, 0.12);
            padding: 10px 14px;
            text-align: left;
        }

        .article-content table th {
            background: var(--bg);
            font-weight: 600;
            color: var(--primary);
        }

        .article-content code {
            background: var(--primary-soft);
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 0.9em;
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
        }

        .article-content pre {
            background: #1F2933;
            color: #E5E7EB;
            padding: 20px 24px;
            border-radius: var(--radius-card);
            overflow-x: auto;
            margin: 1.8em 0;
            line-height: 1.6;
        }

        .article-content pre code {
            background: transparent;
            padding: 0;
            color: inherit;
            font-size: 0.9em;
        }

        .article-content hr {
            border: none;
            border-top: 1px solid rgba(31, 78, 74, 0.12);
            margin: 2.5em 0;
        }

        /* 文末 */
        .article-footer {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(31, 78, 74, 0.08);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            margin-bottom: 28px;
        }

        .tags-label {
            font-size: 14px;
            color: var(--text-weak);
        }

        .article-tag {
            display: inline-block;
            background: var(--bg);
            color: var(--primary);
            font-size: 13px;
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            border: 1px solid rgba(31, 78, 74, 0.1);
            transition: all 0.2s ease;
        }

        .article-tag:hover {
            background: var(--accent-soft);
            border-color: var(--accent);
            color: var(--accent-dark);
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 32px;
        }

        .share-label {
            font-size: 14px;
            color: var(--text-weak);
        }

        .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 36px;
            padding: 0 16px;
            background: var(--bg);
            border: 1px solid rgba(31, 78, 74, 0.1);
            border-radius: var(--radius-pill);
            font-size: 13px;
            color: var(--primary);
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .share-btn:hover {
            background: var(--accent-soft);
            border-color: var(--accent);
            color: var(--accent-dark);
        }

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

        /* 上一篇 / 下一篇 */
        .article-pager {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            margin-top: 8px;
        }

        .pager-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 20px;
            background: var(--bg);
            border-radius: var(--radius-card);
            border: 1px solid rgba(31, 78, 74, 0.08);
            transition: all 0.2s ease;
            min-width: 160px;
        }

        .pager-link:hover {
            background: #fff;
            border-color: var(--accent);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }

        .pager-arrow {
            font-size: 18px;
            color: var(--accent);
            line-height: 1;
        }

        .pager-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }

        .pager-link.pager-prev {
            justify-content: flex-start;
        }

        .pager-link.pager-next {
            justify-content: flex-end;
        }

        /* 相关推荐 */
        .related-posts {
            max-width: 920px;
            margin: 0 auto;
        }

        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }

        .section-head h2 {
            font-family: var(--font-heading);
            font-size: 22px;
            color: var(--primary);
            font-weight: 700;
        }

        .back-list {
            font-size: 14px;
            color: var(--accent-dark);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            border: 1px solid rgba(199, 154, 69, 0.3);
            transition: all 0.2s ease;
        }

        .back-list:hover {
            background: var(--accent-soft);
            border-color: var(--accent);
        }

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

        .related-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid rgba(31, 78, 74, 0.06);
            box-shadow: var(--shadow-card);
            transition: all 0.25s ease;
        }

        .related-card:hover {
            transform: translateY(-4px);
            border-color: var(--accent);
            box-shadow: var(--shadow-hover);
        }

        .related-thumb {
            position: relative;
            height: 160px;
            overflow: hidden;
            background: var(--bg-deep);
        }

        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

        .related-card:hover .related-thumb img {
            transform: scale(1.04);
        }

        .related-thumb::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(31, 78, 74, 0.18), transparent 60%);
        }

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

        .related-info h3 {
            font-size: 17px;
            font-family: var(--font-heading);
            color: var(--primary);
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 8px;
            transition: color 0.2s ease;
        }

        .related-card:hover .related-info h3 {
            color: var(--accent-dark);
        }

        .related-date {
            font-size: 13px;
            color: var(--text-weak);
        }

        /* 内容未找到 */
        .article-not-found {
            max-width: 640px;
            margin: 80px auto;
            text-align: center;
            background: var(--card-bg);
            border-radius: var(--radius-card);
            padding: 64px 48px;
            border: 1px dashed rgba(31, 78, 74, 0.18);
            box-shadow: var(--shadow-card);
        }

        .article-not-found .nf-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            background: var(--bg);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
        }

        .article-not-found h1 {
            font-family: var(--font-heading);
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .article-not-found p {
            color: var(--text-weak);
            margin-bottom: 28px;
        }

        /* ========= Footer ========= */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.85);
            padding: 64px 0 0;
            font-size: 14px;
        }

        .site-footer .container {
            padding-bottom: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
        }

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

        .footer-brand .logo-mark {
            width: 34px;
            height: 34px;
            font-size: 18px;
        }

        .footer-brand p {
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            max-width: 320px;
        }

        .footer-nav h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            font-family: var(--font-heading);
            margin-bottom: 16px;
        }

        .footer-nav a {
            display: block;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 10px;
            transition: color 0.2s ease;
        }

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

        .footer-contact p {
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 10px;
            line-height: 1.6;
        }

        .footer-contact a {
            color: rgba(255, 255, 255, 0.65);
            transition: color 0.2s ease;
        }

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

        .footer-copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ========= 响应式 ========= */
        @media (max-width: 1023px) {
            .container {
                padding: 0 24px;
            }

            .header-inner {
                gap: 16px;
                height: 68px;
            }

            .search-box.desktop-search {
                display: none;
            }

            .header-icon {
                display: inline-flex;
            }

            .search-toggle {
                display: inline-flex;
            }

            .header-right {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                flex-direction: column;
                align-items: stretch;
                padding: 20px 24px;
                gap: 16px;
                border-bottom: 1px solid rgba(31, 78, 74, 0.08);
                box-shadow: 0 20px 40px rgba(31, 78, 74, 0.08);
            }

            .header-right.open {
                display: flex;
            }

            .main-nav {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                width: 100%;
            }

            .nav-link {
                padding: 12px 16px;
                border-radius: var(--radius-btn);
                font-size: 16px;
            }

            .header-cta {
                width: 100%;
                margin-top: 8px;
            }

            .mobile-search-layer {
                display: none;
            }

            .mobile-search-layer.open {
                display: block;
            }

            .article-card {
                padding: 36px 32px;
            }

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

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

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }

            .header-inner {
                height: 64px;
                gap: 12px;
            }

            .brand-text strong {
                font-size: 14px;
            }

            .brand-text small {
                font-size: 11px;
            }

            .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 17px;
            }

            .article-main {
                padding: 32px 0 56px;
            }

            .article-breadcrumb {
                font-size: 13px;
                gap: 6px;
            }

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

            .article-seo-banner {
                padding: 20px 20px;
                border-left-width: 6px;
                margin-bottom: 28px;
            }

            .article-seo-banner .seo-title {
                font-size: 18px;
            }

            .article-card {
                padding: 24px 16px;
                border-radius: 10px;
            }

            .article-header h1 {
                font-size: 22px;
                padding-left: 14px;
                border-left-width: 3px;
            }

            .article-meta {
                gap: 10px;
                font-size: 13px;
            }

            .article-content {
                font-size: 15px;
                line-height: 1.75;
            }

            .article-content h2 {
                font-size: 20px;
            }

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

            .article-content blockquote {
                padding: 14px 18px;
            }

            .article-tags {
                gap: 8px;
            }

            .article-share {
                flex-wrap: wrap;
            }

            .article-pager {
                flex-direction: column;
                gap: 12px;
            }

            .pager-link {
                width: 100%;
                justify-content: center;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .article-not-found {
                padding: 48px 24px;
                margin: 40px auto;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 32px;
            }

            .footer-brand {
                grid-column: 1;
            }

            .footer-copyright {
                padding: 20px 0;
                font-size: 12px;
            }
        }

        @media (max-width: 520px) {
            .search-toggle svg,
            .menu-toggle span {
                width: 18px;
            }

            .related-thumb {
                height: 140px;
            }

            .article-content table {
                font-size: 14px;
            }

            .article-content table th,
            .article-content table td {
                padding: 8px 10px;
            }
        }