/* roulang page: index */
:root{
    --color-primary:#4A352A;
    --color-primary-dark:#38261F;
    --color-primary-darker:#2C231E;
    --color-accent:#4F6B4C;
    --color-accent-light:#6B8A68;
    --color-accent-dark:#3D5440;
    --color-bg:#F5F1EA;
    --color-bg-white:#FFFFFF;
    --color-bg-warm:#FDFBF7;
    --color-text:#1F1A17;
    --color-text-soft:rgba(31,26,23,.72);
    --color-text-faint:rgba(31,26,23,.48);
    --color-border:rgba(74,53,42,.14);
    --color-border-light:rgba(74,53,42,.08);
    --color-hero-text:#F7F3ED;
    --radius-sm:6px;
    --radius-md:10px;
    --radius-lg:16px;
    --shadow-sm:0 1px 2px rgba(60,50,40,.06);
    --shadow-md:0 1px 2px rgba(60,50,40,.06),0 8px 24px rgba(60,50,40,.06);
    --shadow-lg:0 2px 4px rgba(60,50,40,.08),0 12px 36px rgba(60,50,40,.10);
    --font-serif:'Noto Serif SC','Source Han Serif SC','Songti SC','SimSun',serif;
    --font-sans:'Noto Sans SC','Source Han Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
    --font-num:'Inter','Helvetica Neue',Arial,sans-serif;
    --container:1200px;
    --gap-section:100px;
    --gap-section-mob:60px;
    --nav-h:76px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 20px)}
body{font-family:var(--font-sans);font-size:16px;line-height:1.75;color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--color-primary);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--color-accent)}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--color-text)}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-alt{background:var(--color-bg-white)}
.section-head{max-width:720px;margin:0 auto 56px;text-align:center}
.section-tag{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--color-accent);background:rgba(79,107,76,.10);padding:5px 16px;border-radius:20px;margin-bottom:14px}
.section-head h2{font-family:var(--font-serif);font-size:32px;font-weight:700;line-height:1.3;letter-spacing:.02em;color:var(--color-primary)}
.section-head p{margin-top:14px;font-size:15px;color:var(--color-text-soft);line-height:1.8}
@media(max-width:768px){
    .section{padding:56px 0}
    .section-head{margin-bottom:36px}
    .section-head h2{font-size:26px}
}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 28px;border-radius:var(--radius-md);font-size:15px;font-weight:600;line-height:1;letter-spacing:.02em;transition:all .25s ease;text-decoration:none;border:1px solid transparent}
.btn-primary{background:var(--color-primary);color:#fff}
.btn-primary:hover{background:var(--color-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-outline{border-color:rgba(255,255,255,.45);color:var(--color-hero-text)}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.10);color:#fff}
.btn-accent{background:var(--color-accent);color:#fff}
.btn-accent:hover{background:var(--color-accent-dark);color:#fff;transform:translateY(-1px)}
.btn-block{width:100%}
.btn:focus-visible{outline:2px solid rgba(74,53,42,.45);outline-offset:2px}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(245,241,234,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--color-border-light)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);max-width:var(--container);margin:0 auto;padding:0 24px}
.site-logo{font-family:var(--font-serif);font-size:22px;font-weight:700;color:var(--color-primary);letter-spacing:.04em;text-decoration:none}
.site-logo:hover{color:var(--color-primary)}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{font-size:14px;font-weight:500;color:var(--color-text-soft);position:relative;padding:6px 2px}
.nav-links a::after{content:'';position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--color-primary);transition:width .3s ease}
.nav-links a:hover{color:var(--color-primary)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--color-primary);font-weight:600}
.nav-links a.active::after{width:100%}
.nav-toggle{display:none;flex-direction:column;gap:5px;width:44px;height:44px;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--color-primary);transition:all .3s ease}
@media(max-width:768px){
    .nav-toggle{display:flex}
    .nav-links{position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;background:var(--color-bg);border-bottom:1px solid var(--color-border-light);padding:0 24px;gap:0;display:none;max-height:calc(100vh - var(--nav-h));overflow-y:auto}
    .nav-links.open{display:flex}
    .nav-links a{padding:16px 0;width:100%;border-bottom:1px solid var(--color-border-light);text-align:left;font-size:16px}
    .nav-links a::after{display:none}
}

/* Hero */
.hero{position:relative;overflow:hidden;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;color:var(--color-hero-text)}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(118deg,rgba(44,35,30,.88) 0%,rgba(74,53,42,.62) 62%,rgba(79,107,76,.35) 100%)}
.hero-inner{position:relative;z-index:2;max-width:var(--container);margin:0 auto;padding:110px 24px 96px}
.hero-eyebrow{display:inline-block;font-size:13px;letter-spacing:.14em;color:rgba(247,243,237,.85);border:1px solid rgba(247,243,237,.35);padding:6px 18px;border-radius:30px;margin-bottom:26px;text-transform:uppercase}
.hero h1{font-family:var(--font-serif);font-size:52px;font-weight:800;line-height:1.2;letter-spacing:.02em;max-width:620px;margin-bottom:22px}
.hero-sub{font-size:17px;line-height:1.85;color:rgba(247,243,237,.88);max-width:560px;margin-bottom:38px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-actions .btn{min-width:130px}
@media(max-width:768px){
    .hero-inner{padding:70px 24px 60px}
    .hero h1{font-size:33px}
    .hero-sub{font-size:15px}
    .hero-actions{gap:10px}
    .hero-actions .btn{flex:1 1 100%}
}

/* Stats */
.stats-section{background:var(--color-bg);padding:52px 0;border-bottom:1px solid var(--color-border-light)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-card{text-align:center;padding:32px 20px;background:var(--color-bg-white);border-radius:var(--radius-md);border:1px solid var(--color-border-light)}
.stat-num{font-family:var(--font-num);font-size:40px;font-weight:800;color:var(--color-accent);line-height:1.2;letter-spacing:.02em;font-variant-numeric:tabular-nums}
.stat-unit{font-size:16px;color:var(--color-accent);margin-left:2px}
.stat-label{margin-top:8px;font-size:14px;color:var(--color-text-soft)}
@media(max-width:768px){
    .stats-grid{grid-template-columns:repeat(2,1fr);gap:12px}
    .stat-card{padding:22px 12px}
    .stat-num{font-size:30px}
}

/* Services */
.services-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:24px}
.svc-card{grid-column:span 2;background:var(--color-bg-white);border:1px solid var(--color-border-light);border-radius:var(--radius-lg);overflow:hidden;transition:transform .3s ease,box-shadow .3s ease;display:flex;flex-direction:column}
.svc-card.svc-featured{grid-column:span 3}
.svc-card.svc-wide{grid-column:span 6}
.svc-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.svc-media{position:relative;height:160px;overflow:hidden}
.svc-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.svc-card:hover .svc-media img{transform:scale(1.05)}
.svc-badge{position:absolute;top:12px;right:12px;background:rgba(44,35,30,.82);color:#fff;font-size:12px;padding:4px 12px;border-radius:20px;letter-spacing:.04em}
.svc-content{padding:24px 24px 28px;flex:1;display:flex;flex-direction:column}
.svc-num{font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--color-accent);letter-spacing:.06em;margin-bottom:6px}
.svc-content h3{font-family:var(--font-serif);font-size:19px;font-weight:700;color:var(--color-primary);margin-bottom:10px}
.svc-content p{font-size:14px;color:var(--color-text-soft);line-height:1.75;flex:1}
.svc-link{display:inline-block;margin-top:16px;font-size:14px;font-weight:600;color:var(--color-accent)}
.svc-link:hover{color:var(--color-accent-dark)}
@media(max-width:768px){
    .services-grid{grid-template-columns:1fr !important}
    .svc-card,.svc-card.svc-featured,.svc-card.svc-wide{grid-column:span 1 !important}
}

/* Compare */
.compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:32px;position:relative}
.compare-vs{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:52px;height:52px;background:var(--color-primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--font-serif);font-weight:700;font-size:14px;z-index:5;box-shadow:var(--shadow-md);border:4px solid var(--color-bg)}
.compare-card{background:var(--color-bg-white);border:1px solid var(--color-border-light);border-radius:var(--radius-lg);padding:32px 32px 36px;position:relative}
.compare-card h3{font-family:var(--font-serif);font-size:20px;font-weight:700;color:var(--color-primary);margin-bottom:6px}
.compare-card .sub{font-size:13px;color:var(--color-text-faint);margin-bottom:24px}
.compare-item{margin-bottom:20px}
.compare-item .label{font-size:14px;font-weight:600;color:var(--color-text);display:flex;justify-content:space-between;margin-bottom:8px}
.compare-item .label small{font-weight:400;color:var(--color-text-soft)}
.scorebar{height:6px;background:rgba(74,53,42,.08);border-radius:4px;overflow:hidden}
.scorebar i{display:block;height:100%;border-radius:4px}
.compare-b .scorebar i{background:linear-gradient(90deg,var(--color-accent),var(--color-accent-light))}
.compare-a .scorebar i{background:linear-gradient(90deg,var(--color-text-faint),var(--color-border))}
.compare-foot{margin-top:26px;padding-top:20px;border-top:1px solid var(--color-border-light);display:flex;align-items:center;justify-content:space-between}
.compare-score{font-size:14px;color:var(--color-text-soft)}
.compare-score strong{font-family:var(--font-num);font-size:24px;color:var(--color-accent)}
.compare-a .compare-score strong{color:var(--color-text-faint)}
@media(max-width:768px){
    .compare-wrap{grid-template-columns:1fr;gap:20px}
    .compare-vs{display:none}
}

/* FAQ */
.faq-section{background:var(--color-bg-warm)}
.faq-list{max-width:760px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--color-border-light)}
.faq-item:first-of-type{border-top:1px solid var(--color-border-light)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 0;font-family:var(--font-serif);font-size:16px;font-weight:600;color:var(--color-text);text-align:left;transition:color .2s ease}
.faq-q:hover{color:var(--color-primary)}
.faq-icon{flex-shrink:0;width:22px;height:22px;position:relative;transition:transform .35s ease}
.faq-icon::before,.faq-icon::after{content:'';position:absolute;background:var(--color-primary);transition:all .3s ease}
.faq-icon::before{top:10px;left:3px;width:16px;height:2px}
.faq-icon::after{top:3px;left:10px;width:2px;height:16px}
.faq-item.active .faq-icon{transform:rotate(45deg)}
.faq-a{display:none;padding:0 36px 22px 0;font-size:15px;color:var(--color-text-soft);line-height:1.8}
.faq-item.active .faq-a{display:block}
@media(max-width:768px){
    .faq-q{font-size:15px;padding:18px 0}
    .faq-a{font-size:14px}
}

/* Contact */
.contact-section{background:var(--color-bg-white)}
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.contact-info h2{font-family:var(--font-serif);font-size:32px;font-weight:700;color:var(--color-primary);line-height:1.35;margin-bottom:18px}
.contact-info p{font-size:15px;color:var(--color-text-soft);line-height:1.85;margin-bottom:12px}
.contact-points{margin-top:28px;display:grid;gap:16px}
.contact-point{display:flex;align-items:flex-start;gap:14px}
.contact-point i{width:20px;height:20px;margin-top:3px;flex-shrink:0;color:var(--color-accent)}
.contact-point span{font-size:15px;color:var(--color-text)}
.contact-form-wrap{background:var(--color-bg-warm);border:1px solid var(--color-border-light);border-radius:var(--radius-lg);padding:38px 36px;box-shadow:var(--shadow-sm)}
.contact-form-wrap h3{font-family:var(--font-serif);font-size:20px;font-weight:700;color:var(--color-primary);margin-bottom:6px}
.contact-form-wrap .sub{font-size:13px;color:var(--color-text-faint);margin-bottom:28px}
.form-row{margin-bottom:20px}
.form-row label{display:block;font-size:14px;font-weight:600;color:var(--color-text);margin-bottom:8px}
.form-row input,.form-row select,.form-row textarea{width:100%;height:44px;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:#fff;padding:0 14px;font-size:15px;transition:border-color .25s ease,box-shadow .25s ease}
.form-row textarea{height:auto;padding:12px 14px;resize:vertical;line-height:1.6}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(74,53,42,.15)}
.form-feedback{font-size:14px;color:var(--color-accent);margin-top:14px;min-height:20px;text-align:center}
@media(max-width:768px){
    .contact-wrap{grid-template-columns:1fr;gap:36px}
    .contact-form-wrap{padding:28px 20px}
}

/* News */
.news-section{background:var(--color-bg)}
.news-list{max-width:860px;margin:0 auto;display:grid;gap:24px}
.news-card{display:flex;background:var(--color-bg-white);border:1px solid var(--color-border-light);border-radius:var(--radius-lg);overflow:hidden;transition:transform .3s ease,box-shadow .3s ease}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.news-thumb{flex-shrink:0;width:220px;min-height:150px;overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:24px 28px;display:flex;flex-direction:column;justify-content:center;flex:1}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.news-meta .tag{display:inline-block;font-size:12px;font-weight:600;color:var(--color-accent);background:rgba(79,107,76,.10);padding:3px 12px;border-radius:20px}
.news-meta time{font-size:13px;color:var(--color-text-faint);font-family:var(--font-num)}
.news-body h3{font-family:var(--font-serif);font-size:19px;font-weight:700;color:var(--color-text);margin-bottom:8px;line-height:1.45}
.news-body h3 a{color:inherit}
.news-body h3 a:hover{color:var(--color-primary)}
.news-summary{font-size:14px;color:var(--color-text-soft);line-height:1.7;margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-link{font-size:14px;font-weight:600;color:var(--color-primary);display:inline-flex;align-items:center;gap:6px}
.news-link:hover{color:var(--color-accent)}
.news-link i{font-style:normal;transition:transform .3s ease}
.news-link:hover i{transform:translateX(3px)}
.news-empty{text-align:center;padding:50px 20px;color:var(--color-text-faint)}
.news-empty svg{width:48px;height:48px;margin-bottom:14px;fill:var(--color-text-faint)}
@media(max-width:768px){
    .news-card{flex-direction:column}
    .news-thumb{width:100%;height:160px}
    .news-body{padding:20px}
}

/* Footer */
.site-footer{background:var(--color-primary-darker);color:rgba(247,243,237,.78);padding:64px 0 0}
.footer-top{max-width:var(--container);margin:0 auto;padding:0 24px;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand .site-logo{color:#fff;font-size:24px}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(247,243,237,.60);max-width:320px}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;letter-spacing:.06em;margin-bottom:18px}
.footer-col ul{list-style:none;display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(247,243,237,.65);transition:color .25s ease}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(247,243,237,.10);padding:22px 0}
.footer-bottom-inner{max-width:var(--container);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(247,243,237,.50)}
.footer-bottom-inner a{color:rgba(247,243,237,.50)}
.footer-bottom-inner a:hover{color:#fff}
.social-links{display:flex;gap:10px}
.social-link{width:36px;height:36px;border:1px solid rgba(247,243,237,.25);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;color:rgba(247,243,237,.65);transition:all .25s ease}
.social-link:hover{background:rgba(247,243,237,.10);border-color:rgba(247,243,237,.5);color:#fff;transform:translateY(-2px)}
@media(max-width:768px){
    .footer-top{grid-template-columns:1fr 1fr;gap:28px}
    .footer-brand{grid-column:1 / -1}
    .footer-bottom-inner{flex-direction:column;text-align:center}
}
@media(max-width:520px){
    .footer-top{grid-template-columns:1fr}
}

/* Back to top */
.backtop{position:fixed;bottom:24px;right:24px;width:44px;height:44px;background:var(--color-primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transform:translateY(10px);transition:all .3s ease;box-shadow:var(--shadow-md);z-index:999}
.backtop.show{opacity:1;visibility:visible;transform:translateY(0)}
.backtop:hover{background:var(--color-primary-dark);transform:translateY(-2px)}

/* roulang page: article */
/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg-page);
  color:var(--color-text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit}

/* ===== Design Variables ===== */
:root{
  --color-primary:#4A352A;
  --color-primary-dark:#3A2A21;
  --color-primary-light:rgba(74,53,42,0.08);
  --color-accent:#B5813C;
  --color-accent-soft:rgba(181,129,60,0.12);
  --color-green:#4F6B4C;
  --bg-page:#F5F1EA;
  --bg-card:#FFFFFF;
  --bg-dark:#2C231E;
  --bg-deep:#1F1A17;
  --color-text:#1F1A17;
  --color-text-soft:rgba(31,26,23,0.65);
  --color-text-faint:rgba(31,26,23,0.45);
  --color-border:rgba(74,53,42,0.12);
  --color-border-light:rgba(74,53,42,0.08);
  --radius-sm:8px;
  --radius-md:12px;
  --radius-lg:16px;
  --shadow-sm:0 1px 2px rgba(60,50,40,0.05);
  --shadow-md:0 1px 2px rgba(60,50,40,0.06),0 8px 24px rgba(60,50,40,0.06);
  --shadow-lg:0 4px 12px rgba(60,50,40,0.08),0 16px 40px rgba(60,50,40,0.10);
  --container:1200px;
  --article-w:720px;
  --header-h:76px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",SimSun,serif;
}

/* ===== Container ===== */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.main-wrap{min-height:60vh}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 30px;font-size:15px;font-weight:600;letter-spacing:0.02em;
  border-radius:var(--radius-btn);border:1px solid transparent;
  transition:all 0.25s ease;line-height:1.4;white-space:nowrap;
}
.btn-primary{background:var(--color-primary);color:#fff}
.btn-primary:hover{background:var(--color-primary-dark);transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(0)}
.btn-primary:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(74,53,42,0.25)}
.btn-outline{background:transparent;border-color:var(--color-border);color:var(--color-text)}
.btn-outline:hover{border-color:var(--color-primary);background:var(--color-primary-light)}
.btn-outline:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(74,53,42,0.2)}

/* ===== Badge ===== */
.badge{
  display:inline-block;padding:4px 14px;font-size:13px;font-weight:600;letter-spacing:0.04em;
  border-radius:20px;border:1px solid var(--color-border);color:var(--color-primary);
  background:rgba(255,255,255,0.6);
}
.badge-accent{background:var(--color-accent-soft);border-color:rgba(181,129,60,0.25);color:#8A6424}

/* ===== Header / Nav ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(245,241,234,0.85);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--color-border-light);
  height:var(--header-h);
}
.nav-wrap{
  max-width:var(--container);margin:0 auto;height:100%;
  display:flex;align-items:center;justify-content:space-between;padding:0 24px;
}
.site-logo{
  font-family:var(--font-serif);
  font-size:23px;font-weight:700;letter-spacing:0.05em;color:var(--color-primary);
  line-height:1.2;
}
.nav-links{display:flex;align-items:center;gap:36px;margin:0;padding:0;list-style:none}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--color-text-soft);
  padding:8px 2px;transition:color 0.2s ease;letter-spacing:0.02em;
}
.nav-links a:hover{color:var(--color-primary)}
.nav-links a::after{
  content:'';position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--color-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform 0.25s ease;
}
.nav-links a:hover::after{transform:scaleX(0.5)}
.nav-links a.active{color:var(--color-primary);font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:10px;background:transparent;border:none;border-radius:8px;
}
.nav-toggle span{
  display:block;height:2px;width:24px;background:var(--color-primary);
  transition:all 0.3s 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)}

/* ===== Breadcrumb ===== */
.breadcrumb-wrap{
  background:rgba(255,255,255,0.5);
  border-bottom:1px solid var(--color-border-light);
  padding:18px 0;
}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  font-size:14px;color:var(--color-text-soft);
}
.breadcrumb a{color:var(--color-text-soft);transition:color 0.2s}
.breadcrumb a:hover{color:var(--color-primary)}
.breadcrumb .sep{color:var(--color-text-faint);font-size:16px;line-height:1}
.breadcrumb .current{
  color:var(--color-text);font-weight:500;
  max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ===== Article Detail ===== */
.article-detail-wrap{padding:64px 0 40px}
.article-detail{max-width:var(--article-w);margin:0 auto}
.article-header{margin-bottom:48px;text-align:center}
.article-meta{
  display:flex;align-items:center;justify-content:center;gap:16px;
  margin-bottom:22px;
}
.article-time{
  font-size:14px;color:var(--color-text-soft);
  letter-spacing:0.02em;
}
.article-title{
  font-family:var(--font-serif);
  font-size:38px;line-height:1.3;font-weight:700;letter-spacing:0.02em;
  color:var(--color-text);margin:0 auto 22px;max-width:640px;
  text-wrap:balance;
}
.article-summary{
  font-size:16px;line-height:1.75;color:var(--color-text-soft);
  margin:0 auto 32px;max-width:620px;
}
.article-cover{
  border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-md);background:var(--bg-card);
  max-height:460px;
}
.article-cover img{width:100%;height:100%;object-fit:cover}

/* ===== Article Body ===== */
.article-body{
  font-size:16.5px;line-height:1.85;color:var(--color-text);
  border-top:1px solid var(--color-border-light);
  padding-top:44px;
}
.article-body p{margin-bottom:1.7em}
.article-body h2{
  font-family:var(--font-serif);
  font-size:27px;line-height:1.4;font-weight:700;
  margin:2em 0 0.9em;padding-bottom:12px;
  border-bottom:1px solid var(--color-border-light);
  color:var(--color-primary);
}
.article-body h3{
  font-family:var(--font-serif);
  font-size:21px;font-weight:600;line-height:1.45;
  margin:1.8em 0 0.8em;color:var(--color-text);
}
.article-body ul,.article-body ol{
  margin:1.3em 0 1.8em;padding-left:1.6em;
}
.article-body li{margin-bottom:0.65em;line-height:1.75}
.article-body ul li::marker{color:var(--color-accent)}
.article-body ol li::marker{color:var(--color-accent);font-weight:600}
.article-body blockquote{
  border-left:3px solid var(--color-accent);
  background:var(--color-accent-soft);
  padding:18px 24px;margin:1.8em 0;border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--color-text-soft);font-style:italic;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  border-radius:var(--radius-md);margin:1.8em 0;box-shadow:var(--shadow-sm);
}
.article-body hr{
  border:none;border-top:1px solid var(--color-border-light);margin:2.6em 0;
}
.article-body a{
  color:var(--color-primary);text-decoration:underline;
  text-underline-offset:4px;text-decoration-color:rgba(74,53,42,0.3);
  transition:text-decoration-color 0.2s;
}
.article-body a:hover{text-decoration-color:var(--color-primary)}

/* ===== Related ===== */
.related-section{
  background:var(--bg-card);
  border-top:1px solid var(--color-border-light);
  border-bottom:1px solid var(--color-border-light);
  padding:72px 0 80px;
  margin-top:72px;
}
.related-header{
  display:flex;align-items:flex-end;justify-content:space-between;
  margin-bottom:40px;
}
.related-title{
  font-family:var(--font-serif);
  font-size:31px;font-weight:700;letter-spacing:0.02em;color:var(--color-text);
  margin:0;
}
.related-sub{
  font-size:14px;color:var(--color-text-soft);
  margin-top:6px;
}
.related-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.related-card{
  background:var(--bg-card);
  border-radius:var(--radius-md);
  border:1px solid var(--color-border-light);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform 0.25s ease,box-shadow 0.25s ease;
}
.related-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-md);
}
.related-thumb{height:190px;overflow:hidden;background:var(--bg-page)}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.3s ease}
.related-card:hover .related-thumb img{transform:scale(1.03)}
.related-info{
  padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;
}
.related-info .badge{align-self:flex-start;margin-bottom:12px}
.related-info h3{
  font-family:var(--font-serif);
  font-size:18px;line-height:1.5;font-weight:600;color:var(--color-text);
  margin-bottom:10px;
}
.related-info p{
  font-size:14px;line-height:1.7;color:var(--color-text-soft);
  margin-bottom:18px;flex:1;
}
.read-more{
  font-size:14px;font-weight:600;color:var(--color-primary);
  display:inline-flex;align-items:center;gap:6px;
  transition:gap 0.2s ease;
}
.related-card:hover .read-more{gap:10px}

/* ===== CTA ===== */
.section-cta{
  padding:80px 0;background:var(--bg-dark);
  background-image:linear-gradient(135deg,rgba(181,129,60,0.08) 0%,rgba(79,107,76,0.06) 100%);
}
.cta-inner{
  max-width:900px;margin:0 auto;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:28px;
}
.cta-inner h2{
  font-family:var(--font-serif);
  font-size:32px;color:#fff;letter-spacing:0.03em;line-height:1.35;
}
.cta-inner p{
  font-size:16px;color:rgba(255,255,255,0.72);
  max-width:520px;line-height:1.8;
}
.cta-actions{display:flex;gap:16px;flex-wrap:wrap;justify-content:center;margin-top:8px}
.btn-outline-light{
  background:transparent;border-color:rgba(255,255,255,0.35);color:#fff;
}
.btn-outline-light:hover{
  border-color:rgba(255,255,255,0.7);background:rgba(255,255,255,0.08);
}

/* ===== Not Found ===== */
.not-found{
  padding:120px 24px;text-align:center;max-width:520px;margin:0 auto;
}
.not-found-icon{
  width:64px;height:64px;margin:0 auto 28px;color:var(--color-accent);
}
.not-found h1{
  font-family:var(--font-serif);
  font-size:36px;font-weight:700;color:var(--color-text);
  margin-bottom:16px;
}
.not-found p{
  font-size:16px;color:var(--color-text-soft);
  margin-bottom:36px;line-height:1.8;
}
.not-found .btn{margin:0 4px}

/* ===== Footer ===== */
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,0.72)}
.footer-top{
  max-width:var(--container);margin:0 auto;padding:64px 24px 48px;
  display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;
}
.footer-brand .site-logo{
  color:#fff;font-size:24px;display:inline-block;margin-bottom:16px;
}
.footer-brand p{
  font-size:14px;line-height:1.8;color:rgba(255,255,255,0.55);
  max-width:360px;
}
.footer-col h4{
  font-size:16px;font-weight:600;color:#fff;margin-bottom:16px;
  letter-spacing:0.03em;
}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:12px}
.footer-col ul a{
  font-size:14px;color:rgba(255,255,255,0.55);
  transition:color 0.2s ease;
}
.footer-col ul a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.08);
}
.footer-bottom-inner{
  max-width:var(--container);margin:0 auto;padding:22px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:rgba(255,255,255,0.4);
}
.social-links{display:flex;gap:12px}
.social-link{
  width:32px;height:32px;border-radius:6px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;color:rgba(255,255,255,0.5);
  border:1px solid rgba(255,255,255,0.15);
  transition:all 0.2s ease;
}
.social-link:hover{color:#fff;border-color:rgba(255,255,255,0.4)}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .nav-links{gap:24px}
  .related-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  :root{--header-h:64px}
  .site-logo{font-size:20px}
  .nav-toggle{display:flex}
  .nav-links{
    position:fixed;top:var(--header-h);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(245,241,234,0.98);
    backdrop-filter:blur(18px);
    border-bottom:1px solid var(--color-border-light);
    max-height:0;overflow:hidden;
    transition:max-height 0.35s ease;
    padding:0 24px;
  }
  .nav-links.open{max-height:calc(100vh - var(--header-h));overflow-y:auto}
  .nav-links a{
    padding:16px 0;border-bottom:1px solid var(--color-border-light);
    font-size:16px;
  }
  .nav-links a:last-child{border-bottom:none}
  .nav-links a::after{display:none}
  .article-detail-wrap{padding:40px 0 24px}
  .article-title{font-size:30px}
  .article-body{font-size:16px}
  .article-body h2{font-size:23px}
  .article-body h3{font-size:19px}
  .related-section{padding:56px 0 64px}
  .related-title{font-size:26px}
  .footer-top{grid-template-columns:1fr;gap:32px;padding:48px 24px 32px}
  .footer-bottom-inner{flex-direction:column;text-align:center;gap:12px}
  .cta-inner h2{font-size:26px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .related-grid{grid-template-columns:1fr}
  .related-thumb{height:200px}
  .article-title{font-size:26px}
  .article-meta{flex-wrap:wrap;gap:10px}
  .cta-actions .btn{width:100%}
  .btn{padding:14px 22px}
  .breadcrumb .current{max-width:220px}
  .section-cta{padding:56px 0}
}