/* roulang page: index */
:root{
  --primary:#0E7C73;
  --primary-light:#37B5A5;
  --accent:#FF7A45;
  --accent-dark:#E56330;
  --bg-light:#F7F5F0;
  --bg-teal:#F0F5F3;
  --text-dark:#1F2A2E;
  --text-mid:#5E6D72;
  --border:#E8E6E1;
  --white:#fff;
  --radius-card:12px;
  --radius-btn:8px;
  --radius-pill:999px;
  --shadow-sm:0 2px 8px rgba(31,42,46,.06);
  --shadow-md:0 6px 20px rgba(31,42,46,.12);
  --font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC','Helvetica Neue',sans-serif;
  --content-w:1200px;
  --space-sec:72px;
  --space-sec-mobile:40px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font-family);background:var(--bg-light);color:var(--text-dark);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--primary-light)}
button,input{font-family:inherit;font-size:inherit}
.container{max-width:var(--content-w);margin:0 auto;padding:0 24px}
.row{max-width:var(--content-w)}
.section{padding:var(--space-sec) 0}
.section-alt{background:var(--bg-teal)}
.section-head{margin-bottom:36px;text-align:center}
.section-head .eyebrow{display:inline-block;font-size:13px;letter-spacing:.08em;color:var(--primary);background:rgba(14,124,115,.08);padding:4px 14px;border-radius:var(--radius-pill);margin-bottom:10px;font-weight:600}
.section-head h2{font-size:28px;font-weight:700;margin:0 0 8px;line-height:1.3}
.section-head p{color:var(--text-mid);font-size:15px;max-width:560px;margin:0 auto}
h1,h2,h3,h4,h5{color:var(--text-dark);line-height:1.3}
h1{font-size:36px;font-weight:700;margin:0 0 12px}
h2{font-size:28px;font-weight:700;margin:0 0 16px}
h3{font-size:19px;font-weight:600;margin:0 0 8px}
p{margin:0 0 12px}
.btn{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 24px;border-radius:var(--radius-btn);font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:all .2s;line-height:1;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-light);color:#fff;transform:translateY(-1px)}
.btn-primary:active{background:#0a645c;transform:translateY(0)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px)}
.btn-accent:active{background:#d15425;transform:translateY(0)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:rgba(14,124,115,.08);color:var(--primary)}
.btn-outline:active{background:rgba(14,124,115,.16)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn:focus-visible,.icon-btn:focus-visible,.nav-link:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}
/* --- Header --- */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;height:64px;background:rgba(247,245,240,.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:background .3s,border-color .3s,box-shadow .3s}
.site-header.scrolled{background:rgba(255,255,255,.96);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;max-width:var(--content-w);margin:0 auto;padding:0 24px}
.brand-logo{font-size:22px;font-weight:800;color:var(--text-dark);letter-spacing:-.5px;display:flex;align-items:center;gap:6px}
.brand-logo .logo-dot{width:10px;height:10px;border-radius:50%;background:var(--primary);display:inline-block;position:relative;top:-2px}
.brand-logo .logo-sub{color:var(--primary);font-weight:600}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{display:inline-flex;align-items:center;padding:8px 16px;border-radius:var(--radius-pill);font-size:15px;font-weight:500;color:var(--text-dark);transition:background .2s,color .2s}
.nav-link:hover{background:rgba(14,124,115,.06);color:var(--primary)}
.nav-link.active{background:rgba(14,124,115,.1);color:var(--primary);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px}
.icon-btn{width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:transparent;border:none;cursor:pointer;color:var(--text-dark);transition:background .2s}
.icon-btn:hover{background:rgba(14,124,115,.08);color:var(--primary)}
.hamburger{display:none;flex-direction:column;justify-content:center;gap:5px;width:40px;height:40px;background:none;border:none;cursor:pointer;padding:8px;border-radius:8px}
.hamburger span{height:2px;background:var(--text-dark);border-radius:2px;transition:all .3s}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
/* --- Hero --- */
.hero{position:relative;min-height:100vh;max-height:110vh;display:flex;align-items:center;padding:96px 0 72px;background:linear-gradient(135deg,rgba(255,255,255,.92) 0%,rgba(240,245,243,.9) 100%),url('/assets/images/backpic/back-1.webp') center/cover no-repeat;}
.hero .row{width:100%;align-items:center}
.hero-left{padding-right:40px}
.hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(14,124,115,.1);color:var(--primary);font-size:13px;font-weight:600;padding:5px 14px;border-radius:var(--radius-pill);margin-bottom:18px}
.hero-badge i{font-size:12px}
.hero-left h1{font-size:38px;font-weight:800;letter-spacing:-1px}
.hero-sub{font-size:17px;color:var(--text-mid);max-width:440px;margin:0 0 28px;line-height:1.7}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:26px}
.hero-trust{display:flex;gap:16px;flex-wrap:wrap}
.trust-item{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-mid);background:rgba(255,255,255,.7);border:1px solid var(--border);padding:4px 12px;border-radius:var(--radius-pill)}
.trust-item i{color:var(--primary);font-size:12px}
.hero-right{display:flex;justify-content:center;align-items:center;position:relative}
.phone-frame{position:relative;width:280px;height:520px;border-radius:36px;background:#0c1417;padding:10px;box-shadow:var(--shadow-md),0 20px 40px rgba(14,124,115,.18);overflow:hidden;aspect-ratio:9/16;max-height:66vh}
.phone-screen{position:relative;width:100%;height:100%;border-radius:28px;overflow:hidden;background:linear-gradient(180deg,rgba(14,124,115,.12),rgba(14,124,115,.02)),url('/assets/images/coverpic/cover-1.png') center/cover no-repeat}
.phone-notch{position:absolute;top:10px;left:50%;transform:translateX(-50%);width:60px;height:6px;border-radius:6px;background:#0c1417;z-index:3}
.phone-info{position:absolute;bottom:0;left:0;right:0;padding:40px 16px 16px;background:linear-gradient(180deg,transparent,rgba(15,30,34,.85));color:#fff;z-index:2}
.phone-info .p-title{font-size:14px;font-weight:600;line-height:1.4;margin-bottom:6px;color:#fff}
.phone-info .p-buy{display:inline-flex;align-items:center;gap:4px;background:var(--accent);color:#fff;font-size:12px;font-weight:600;padding:6px 12px;border-radius:20px}
.float-bubble{position:absolute;border-radius:50%;display:flex;align-items:center;justify-content:center;background:#fff;box-shadow:var(--shadow-md);z-index:4;width:46px;height:46px}
.float-bubble.play{top:85px;right:-18px;width:50px;height:50px}
.float-bubble.play i{font-size:16px;color:var(--primary);margin-left:2px}
.float-bubble.heat{bottom:110px;left:-16px;width:56px;height:56px;flex-direction:column;gap:0}
.float-bubble.heat .heart-icon{font-size:16px;color:var(--accent)}
.float-bubble.heat .heat-num{font-size:13px;font-weight:800;color:var(--text-dark);line-height:1.1}
/* --- Feature Section --- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--white);border-radius:var(--radius-card);padding:32px 26px;text-align:left;box-shadow:var(--shadow-sm);border:1px solid rgba(255,255,255,.6);transition:transform .25s ease,box-shadow .25s ease;position:relative;overflow:hidden}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.feature-card .feat-icon{width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary-light));margin-bottom:18px}
.feature-card:nth-child(2) .feat-icon{background:linear-gradient(135deg,var(--accent),#FFA26B)}
.feature-card:nth-child(3) .feat-icon{background:linear-gradient(135deg,#5B8DFF,#7AA9FF)}
.feature-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.feature-card p{font-size:14px;color:var(--text-mid);margin:0;line-height:1.7}
/* --- Hot Cards --- */
.hot-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.hot-card{background:var(--white);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease;display:block;position:relative}
.hot-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.hot-card .card-media{position:relative;padding-top:56.25%;overflow:hidden}
.hot-card .card-media img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.hot-card:hover .card-media img{transform:scale(1.04)}
.duration-badge{position:absolute;top:12px;left:12px;background:rgba(15,20,22,.78);color:#fff;font-size:12px;font-weight:600;padding:3px 10px;border-radius:6px;letter-spacing:.02em}
.hot-meta{position:absolute;bottom:12px;right:12px;background:rgba(15,20,22,.65);color:#fff;font-size:12px;font-weight:500;padding:3px 10px;border-radius:20px;display:flex;align-items:center;gap:4px}
.card-play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(255,255,255,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;box-shadow:var(--shadow-sm)}
.card-play i{font-size:18px;color:var(--primary);margin-left:3px}
.hot-card:hover .card-play{opacity:1}
.card-body{padding:16px 18px 18px}
.card-body .card-cat{display:inline-block;background:rgba(14,124,115,.1);color:var(--primary);font-size:12px;font-weight:600;padding:2px 10px;border-radius:var(--radius-pill);margin-bottom:8px}
.card-body h3{font-size:16px;font-weight:600;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card-body .card-sub{font-size:13px;color:var(--text-mid);margin-top:6px}
/* --- List Section --- */
.list-section{background:var(--bg-teal)}
.list-wrap{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start}
.list-left{padding-top:8px}
.list-left h2{font-size:28px;font-weight:700;margin-bottom:14px}
.list-left p{font-size:15px;color:var(--text-mid);margin-bottom:24px;max-width:320px}
.list-right{list-style:none;margin:0;padding:0}
.list-item{display:flex;align-items:center;gap:14px;padding:14px 10px;border-top:1px solid var(--border);transition:background .2s}
.list-item:last-child{border-bottom:1px solid var(--border)}
.list-item:hover{background:rgba(255,255,255,.72)}
.list-num{width:40px;font-size:20px;font-weight:800;color:var(--primary-light);flex-shrink:0;text-align:center}
.list-main{flex:1;min-width:0}
.list-main .l-title{font-size:15px;font-weight:600;color:var(--text-dark);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.list-main .l-desc{font-size:13px;color:var(--text-mid);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.list-heat{display:flex;align-items:center;gap:4px;font-size:13px;font-weight:700;color:var(--accent);flex-shrink:0}
.list-buy{flex-shrink:0;height:32px;padding:0 14px;background:var(--primary);color:#fff;border:none;border-radius:20px;font-size:13px;font-weight:600;cursor:pointer;transition:background .2s,transform .2s;display:inline-flex;align-items:center;gap:4px}
.list-buy:hover{background:var(--primary-light);transform:translateY(-1px)}
.list-buy .buy-text{display:inline}
/* --- Review Strip --- */
.review-strip-wrap{position:relative}
.review-strip{display:flex;gap:18px;overflow-x:auto;padding:12px 4px 20px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.review-card{flex:0 0 250px;background:var(--white);border:1px solid var(--border);border-radius:var(--radius-card);padding:22px 20px;scroll-snap-align:start;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.review-card .review-top{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.review-card .avatar{width:40px;height:40px;border-radius:50%;object-fit:cover;flex-shrink:0}
.review-card .review-name{font-size:13px;font-weight:600;color:var(--text-dark)}
.review-card .review-tag{font-size:11px;color:var(--text-mid)}
.review-card .stars{color:#FFB400;font-size:14px;margin-bottom:8px}
.review-card .review-text{font-size:13px;color:var(--text-mid);line-height:1.65;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.review-strip::-webkit-scrollbar{height:4px;background:transparent}
.review-strip::-webkit-scrollbar-thumb{background:rgba(14,124,115,.25);border-radius:4px}
/* --- News Section --- */
.news-list{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.news-card{display:flex;background:var(--white);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s;border:1px solid transparent}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.news-thumb{width:180px;flex-shrink:0;min-height:120px;position:relative;overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover;position:absolute;top:0;left:0}
.news-body{padding:16px 18px;display:flex;flex-direction:column;justify-content:center}
.news-title-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
.news-cat{background:rgba(14,124,115,.1);color:var(--primary);font-size:12px;font-weight:600;padding:2px 10px;border-radius:var(--radius-pill)}
.news-date{font-size:12px;color:var(--text-mid)}
.news-body h3{font-size:15px;font-weight:600;margin:0 0 6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body .news-excerpt{font-size:13px;color:var(--text-mid);line-height:1.6;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;margin:0 0 10px}
.news-link{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--primary)}
.news-link i{transition:transform .2s}
.news-card:hover .news-link i{transform:translateX(4px)}
.news-empty{background:rgba(255,255,255,.6);border:1px dashed var(--border);border-radius:var(--radius-card);padding:40px 20px;text-align:center;color:var(--text-mid);font-size:14px;grid-column:1/-1}
/* --- FAQ --- */
.faq-wrap{max-width:820px;margin:0 auto}
.accordion{border:none;background:transparent;margin:0}
.accordion-item{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-card);margin-bottom:12px;overflow:hidden;transition:box-shadow .2s}
.accordion-item.is-active{box-shadow:var(--shadow-sm);border-color:rgba(14,124,115,.3)}
.accordion-title{position:relative;display:block;padding:0 52px 0 20px;height:52px;line-height:52px;font-size:15px;font-weight:600;color:var(--text-dark);border:none;transition:color .2s}
.accordion-title:hover{color:var(--primary);background:#fff}
.accordion-title::after{content:'+';position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:22px;font-weight:400;color:var(--primary);transition:transform .3s}
.accordion-item.is-active .accordion-title::after{transform:translateY(-50%) rotate(45deg)}
.accordion-content{padding:0 24px 20px;border:none;background:var(--white);color:var(--text-mid);font-size:14px;line-height:1.75;border-left:2px solid var(--primary);margin:0 20px 20px;border-radius:0 0 4px 4px;padding-left:0;padding-right:0}
.accordion-content p{margin:0}
/* --- CTA --- */
.cta-section{position:relative;padding:90px 0;background:linear-gradient(135deg,rgba(15,35,40,.88),rgba(14,124,115,.82)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;text-align:center;color:#fff}
.cta-section h2{color:#fff;font-size:32px;font-weight:800;margin-bottom:12px}
.cta-section p{color:rgba(255,255,255,.85);max-width:560px;margin:0 auto 32px;font-size:16px}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}
.cta-section .btn-accent:hover{color:#fff}
.cta-note{font-size:13px;color:rgba(255,255,255,.6);margin-top:20px}
/* --- Footer --- */
.site-footer{background:var(--text-dark);color:#C6D0D4;padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:3fr 2fr 2fr 2fr;gap:40px;padding-bottom:40px}
.footer-logo{font-size:20px;font-weight:800;color:#fff;display:flex;align-items:center;gap:6px;margin-bottom:14px}
.footer-logo .logo-dot{width:9px;height:9px;background:var(--primary-light);border-radius:50%;display:inline-block}
.footer-brand p{font-size:13px;line-height:1.75;color:#9FB2B8;margin-bottom:16px;max-width:300px}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin:0 0 16px;letter-spacing:.03em}
.footer-col a,.footer-col p{display:block;font-size:13px;color:#C6D0D4;line-height:2;transition:color .2s}
.footer-col a:hover{color:var(--primary-light)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;font-size:12px;color:#8A9DA4;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}
.footer-bottom .icp{color:#8A9DA4}
/* --- Responsive --- */
@media screen and (max-width:1024px){
  .hero-left h1{font-size:32px}
  .phone-frame{width:250px;height:460px}
  .footer-grid{grid-template-columns:1fr 1fr 1fr}
}
@media screen and (max-width:768px){
  .section{padding:var(--space-sec-mobile) 0}
  .section-head h2{font-size:24px}
  .main-nav{position:fixed;top:64px;left:0;right:0;background:var(--bg-light);flex-direction:column;align-items:stretch;padding:12px 16px 20px;border-bottom:1px solid var(--border);transform:translateY(-150%);transition:transform .35s ease;z-index:999;box-shadow:0 8px 24px rgba(31,42,46,.08)}
  .main-nav.open{transform:translateY(0)}
  .nav-link{padding:14px 16px;justify-content:flex-start;font-size:16px}
  .hamburger{display:flex}
  .nav-actions .btn{display:none}
  .hero{padding-top:90px;padding-bottom:48px}
  .hero .row{row-gap:36px}
  .hero-left{padding-right:0;text-align:center}
  .hero-sub{margin-left:auto;margin-right:auto}
  .hero-cta,.hero-trust{justify-content:center}
  .phone-frame{width:230px;height:420px;max-height:60vh}
  .feature-grid,.hot-grid{grid-template-columns:1fr}
  .list-wrap{grid-template-columns:1fr;gap:32px}
  .news-list{grid-template-columns:1fr}
  .news-thumb{width:140px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-section h2{font-size:26px}
}
@media screen and (max-width:520px){
  .container{padding:0 16px}
  .nav-inner{padding:0 16px}
  .brand-logo{font-size:19px}
  .hero-left h1{font-size:27px}
  .hero-sub{font-size:15px}
  .trust-item{padding:3px 10px;font-size:12px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
}

/* roulang page: category1 */
/* ===== Design Tokens ===== */
        :root {
            --primary: #0E7C73;
            --primary-light: #37B5A5;
            --primary-dark: #0A5F58;
            --accent: #FF7A45;
            --accent-dark: #E56330;
            --bg-light: #F7F5F0;
            --bg-mint: #F0F5F3;
            --text-dark: #1F2A2E;
            --text-mid: #5E6D72;
            --text-light: #8A9DA4;
            --border: #E8E6E1;
            --white: #FFFFFF;
            --shadow-sm: 0 2px 8px rgba(31, 42, 46, 0.06);
            --shadow-md: 0 6px 20px rgba(31, 42, 46, 0.12);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-pill: 999px;
            --nav-height: 60px;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-dark);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            cursor: pointer;
            outline: none;
        }

        /* ===== Utility ===== */
        .container {
            max-width: 1200px;
            width: 90%;
            margin: 0 auto;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all 0.25s ease;
            white-space: nowrap;
            border: 1px solid transparent;
            line-height: 1;
        }
        .btn-primary {
            background: var(--primary);
            color: var(--white);
        }
        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(14, 124, 115, 0.3);
        }
        .btn-primary:active {
            background: var(--primary-dark);
            transform: translateY(0);
        }
        .btn-outline {
            background: var(--white);
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--bg-mint);
            border-color: var(--primary-light);
            color: var(--primary-dark);
        }
        .btn-outline:active {
            background: #E1EFEC;
        }
        .btn-cta {
            background: var(--accent);
            color: var(--white);
        }
        .btn-cta:hover {
            background: var(--accent-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(255, 122, 69, 0.35);
        }
        .btn-cta:active {
            transform: translateY(0);
        }
        .btn-white {
            background: var(--white);
            color: var(--primary);
        }
        .btn-white:hover {
            background: var(--bg-mint);
            color: var(--primary-dark);
        }
        .btn-sm {
            height: 38px;
            padding: 0 20px;
            font-size: 14px;
        }
        .btn-lg {
            height: 52px;
            padding: 0 40px;
            font-size: 16px;
        }

        /* ===== Tags & Badges ===== */
        .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
            background: var(--bg-mint);
            color: var(--primary);
            border: 1px solid rgba(14, 124, 115, 0.15);
            line-height: 1.5;
        }
        .tag-accent {
            background: rgba(255, 122, 69, 0.12);
            color: var(--accent-dark);
            border-color: rgba(255, 122, 69, 0.2);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(247, 245, 240, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid transparent;
            transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.96);
            border-bottom-color: var(--border);
            box-shadow: 0 2px 20px rgba(31, 42, 46, 0.05);
        }
        .header-inner {
            max-width: 1360px;
            width: 94%;
            margin: 0 auto;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .header-left {
            display: flex;
            align-items: center;
            gap: 32px;
            flex: 1;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 18px;
            color: var(--text-dark);
            white-space: nowrap;
            transition: color 0.2s;
        }
        .brand-logo:hover {
            color: var(--primary);
        }
        .logo-dot {
            width: 30px;
            height: 30px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            box-shadow: 0 2px 8px rgba(14, 124, 115, 0.3);
            position: relative;
            flex-shrink: 0;
        }
        .logo-dot::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 12px;
            height: 12px;
            background: var(--white);
            border-radius: 4px;
            transform: translate(-50%, -50%);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-link {
            display: inline-block;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-mid);
            border-radius: var(--radius-pill);
            transition: all 0.2s ease;
            white-space: nowrap;
            line-height: 1.4;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(14, 124, 115, 0.06);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(14, 124, 115, 0.1);
            font-weight: 600;
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .search-icon {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            color: var(--text-mid);
            transition: all 0.2s;
            font-size: 15px;
        }
        .search-icon:hover {
            color: var(--primary);
            background: var(--bg-mint);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            padding: 0 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: var(--bg-mint);
        }
        .hamburger span {
            display: block;
            height: 2px;
            width: 100%;
            background: var(--text-dark);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Mobile drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 12px 30px rgba(31, 42, 46, 0.1);
            padding: 12px 20px 20px;
            z-index: 999;
            transform: translateY(-12px);
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.25s ease, transform 0.25s ease;
        }
        .mobile-drawer.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-drawer .nav-link {
            display: block;
            padding: 12px 16px;
            font-size: 16px;
            border-radius: var(--radius-sm);
            margin-bottom: 4px;
        }
        .mobile-drawer .nav-link.active {
            background: var(--bg-mint);
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== Category Hero ===== */
        .category-hero {
            position: relative;
            padding: 140px 0 72px;
            background: linear-gradient(135deg, #EAF4F1 0%, #F7F5F0 50%, #F0F5F3 100%);
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            right: -100px;
            top: -60px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(55, 181, 165, 0.12);
            filter: blur(60px);
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero-inner {
            max-width: 780px;
        }
        .category-hero h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-dark);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .category-hero h1 span {
            color: var(--primary);
        }
        .category-hero-desc {
            font-size: 17px;
            color: var(--text-mid);
            line-height: 1.7;
            max-width: 600px;
            margin-bottom: 28px;
        }
        .category-hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }
        .category-hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-dark);
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-pill);
            padding: 8px 18px;
            box-shadow: var(--shadow-sm);
        }
        .category-hero-meta i {
            color: var(--primary);
        }

        /* ===== Category Content ===== */
        .category-content {
            padding: 72px 0;
            background: var(--bg-light);
        }

        /* Anchor list */
        .anchor-list {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            position: sticky;
            top: calc(var(--nav-height) + 24px);
            box-shadow: var(--shadow-sm);
            margin-bottom: 24px;
        }
        .anchor-list h3 {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-light);
            text-transform: uppercase;
            letter-spacing: 0.1em;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border);
        }
        .anchor-item {
            display: block;
            padding: 11px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-mid);
            font-size: 15px;
            margin-bottom: 4px;
            transition: all 0.2s ease;
            border-left: 3px solid transparent;
            line-height: 1.4;
        }
        .anchor-item:hover {
            background: var(--bg-mint);
            color: var(--primary);
        }
        .anchor-item.active {
            background: var(--bg-mint);
            color: var(--primary);
            font-weight: 600;
            border-left-color: var(--primary);
        }

        /* Entry cards */
        .entry-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
            overflow: hidden;
            margin-bottom: 24px;
        }
        .entry-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .entry-card-wide {
            margin-bottom: 24px;
        }
        .entry-card-img {
            overflow: hidden;
            height: 100%;
            min-height: 220px;
            display: flex;
            align-items: center;
        }
        .entry-card-wide .entry-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .entry-card-body {
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-height: 100%;
        }
        .entry-card-body .tag {
            align-self: flex-start;
            margin-bottom: 14px;
        }
        .entry-card-body h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .entry-card-body p {
            font-size: 15px;
            color: var(--text-mid);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .entry-points {
            margin-top: 4px;
        }
        .entry-points li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-mid);
            padding: 4px 0;
        }
        .entry-points li i {
            color: var(--primary-light);
            font-size: 13px;
            width: 18px;
            text-align: center;
        }
        .entry-card-vertical .entry-card-img {
            height: 200px;
            min-height: 0;
            width: 100%;
        }
        .entry-card-vertical .entry-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .entry-card-vertical .entry-card-body {
            padding: 24px;
            min-height: auto;
        }
        .entry-card-vertical .entry-card-body h3 {
            font-size: 19px;
            margin-bottom: 10px;
        }
        .entry-card-vertical .btn {
            margin-top: 8px;
            align-self: flex-start;
        }

        /* Account prep */
        .account-prep {
            background: var(--bg-mint);
            border: 1px solid rgba(14, 124, 115, 0.15);
            border-radius: var(--radius);
            padding: 24px 32px;
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 8px;
        }
        .account-prep-icon {
            width: 48px;
            height: 48px;
            flex-shrink: 0;
            border-radius: 50%;
            background: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            box-shadow: var(--shadow-sm);
        }
        .account-prep-text h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 4px;
        }
        .account-prep-text p {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.6;
            margin: 0;
        }

        /* ===== Guide Banner ===== */
        .guide-banner {
            padding: 0 0 72px;
            background: var(--bg-light);
        }
        .guide-banner-inner {
            background: linear-gradient(120deg, var(--primary) 0%, var(--primary-light) 70%, #43C2B2 100%);
            border-radius: 18px;
            padding: 48px 56px;
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            box-shadow: 0 12px 32px rgba(14, 124, 115, 0.25);
            position: relative;
            overflow: hidden;
        }
        .guide-banner-inner::after {
            content: '';
            position: absolute;
            right: -40px;
            top: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
        }
        .guide-banner-text h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .guide-banner-text p {
            font-size: 15px;
            opacity: 0.9;
            margin: 0;
        }
        .guide-banner-actions {
            display: flex;
            gap: 12px;
            flex-shrink: 0;
            position: relative;
            z-index: 2;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 72px 0;
            background: var(--bg-mint);
        }
        .section-head {
            margin-bottom: 40px;
        }
        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .section-head p {
            font-size: 15px;
            color: var(--text-mid);
            margin: 0;
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .accordion-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            overflow: hidden;
            transition: box-shadow 0.2s ease;
        }
        .accordion-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .accordion-item.is-active {
            border-color: rgba(14, 124, 115, 0.3);
            box-shadow: var(--shadow-sm);
        }
        .accordion-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            min-height: 56px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            transition: color 0.2s;
            position: relative;
        }
        .accordion-title:hover {
            color: var(--primary);
        }
        .accordion-title::after {
            content: '+';
            font-size: 22px;
            font-weight: 400;
            color: var(--primary-light);
            transition: transform 0.3s ease;
            line-height: 1;
        }
        .accordion-item.is-active .accordion-title::after {
            content: '−';
            transform: rotate(180deg);
        }
        .accordion-content {
            padding: 0 24px 20px;
            border-left: 2px solid var(--primary-light);
            margin-left: 24px;
            margin-right: 24px;
            padding-left: 20px;
            display: none;
        }
        .accordion-item.is-active .accordion-content {
            display: block;
        }
        .accordion-content p {
            font-size: 15px;
            color: var(--text-mid);
            line-height: 1.8;
            margin: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 88px 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(31, 42, 46, 0.86);
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-inner {
            max-width: 640px;
            margin: 0 auto;
            color: var(--white);
        }
        .cta-inner h2 {
            font-size: 34px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .cta-inner p {
            font-size: 17px;
            opacity: 0.85;
            margin-bottom: 32px;
        }
        .cta-inner .btn {
            margin: 0 6px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--text-dark);
            color: #C6D0D4;
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #8A9DA4;
            margin-bottom: 12px;
            max-width: 300px;
        }
        .footer-logo .logo-dot {
            width: 26px;
            height: 26px;
            border-radius: 8px;
        }
        .footer-logo .logo-dot::after {
            width: 10px;
            height: 10px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--white);
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .footer-col a {
            display: block;
            font-size: 13px;
            color: #8A9DA4;
            line-height: 2;
            transition: color 0.2s;
        }
        .footer-col a:hover {
            color: var(--primary-light);
        }
        .footer-col p {
            font-size: 13px;
            color: #8A9DA4;
            line-height: 2;
            margin: 0;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 12px;
            color: #6B7C82;
        }

        /* ===== Responsive ===== */
        @media screen and (max-width: 1024px) {
            .category-hero h1 {
                font-size: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .guide-banner-inner {
                padding: 32px;
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media screen and (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-drawer {
                display: block;
            }
            .category-hero {
                padding: 120px 0 48px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero-desc {
                font-size: 15px;
            }
            .category-hero-meta {
                gap: 8px;
            }
            .category-hero-meta span {
                padding: 6px 12px;
                font-size: 13px;
            }
            .guide-banner-actions {
                flex-direction: column;
                width: 100%;
            }
            .guide-banner-actions .btn {
                width: 100%;
            }
            .cta-inner h2 {
                font-size: 26px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
        }

        @media screen and (max-width: 640px) {
            .header-inner {
                width: 92%;
            }
            .brand-logo {
                font-size: 16px;
                gap: 8px;
            }
            .logo-dot {
                width: 26px;
                height: 26px;
                border-radius: 8px;
            }
            .logo-dot::after {
                width: 10px;
                height: 10px;
            }
            .search-icon {
                display: none;
            }
            .btn-sm {
                height: 36px;
                padding: 0 14px;
                font-size: 13px;
            }
            .category-hero {
                padding: 100px 0 40px;
            }
            .category-hero h1 {
                font-size: 24px;
                letter-spacing: 0;
            }
            .category-hero-desc {
                font-size: 14px;
                line-height: 1.65;
            }
            .category-content {
                padding: 48px 0;
            }
            .anchor-list {
                position: static;
                margin-bottom: 24px;
                padding: 16px;
                display: flex;
                flex-wrap: wrap;
                gap: 8px;
                align-items: center;
            }
            .anchor-list h3 {
                width: 100%;
                margin-bottom: 4px;
                border-bottom: none;
                padding-bottom: 8px;
            }
            .anchor-item {
                padding: 6px 14px;
                font-size: 14px;
                border-left: none;
                background: var(--bg-mint);
                border-radius: var(--radius-pill);
                margin: 0;
            }
            .anchor-item.active {
                background: var(--primary);
                color: var(--white);
            }
            .entry-card-body {
                padding: 20px;
            }
            .entry-card-wide .entry-card-img {
                min-height: 160px;
            }
            .account-prep {
                flex-direction: column;
                align-items: flex-start;
                padding: 20px;
            }
            .guide-banner-inner {
                padding: 24px;
                border-radius: 14px;
            }
            .guide-banner-text h3 {
                font-size: 18px;
            }
            .faq-section {
                padding: 48px 0;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .accordion-content {
                margin-left: 16px;
                margin-right: 16px;
                padding-left: 14px;
            }
            .cta-section {
                padding: 56px 0;
                background-attachment: scroll;
            }
            .cta-inner h2 {
                font-size: 22px;
            }
            .cta-inner p {
                font-size: 15px;
            }
            .cta-inner .btn {
                width: 100%;
                margin: 6px 0;
            }
        }

/* roulang page: article */
:root {
  --primary: #0E7C73;
  --primary-light: #37B5A5;
  --primary-dark: #0A5D56;
  --accent: #FF7A45;
  --accent-dark: #E56330;
  --bg: #F7F5F0;
  --bg-alt: #F0F5F3;
  --text: #1F2A2E;
  --text-secondary: #5E6D72;
  --border: #E8E6E1;
  --white: #FFFFFF;
  --radius: 12px;
  --radius-btn: 8px;
  --shadow-sm: 0 2px 8px rgba(31,42,46,0.06);
  --shadow-md: 0 6px 20px rgba(31,42,46,0.12);
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --container: 1200px;
  --nav-h: 64px;
  --space-section: 64px;
  --space-section-mob: 36px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  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 .2s ease; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; display: block; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
input, textarea { font-family: inherit; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 760px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 44px; padding: 0 22px; border-radius: var(--radius-btn);
  font-size: 15px; font-weight: 600; line-height: 1;
  border: 1px solid transparent; transition: all .25s ease;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-light); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dark); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-ghost { background: #fff; border-color: var(--primary); color: var(--primary); }
.btn-ghost:hover { background: var(--bg-alt); color: var(--primary-dark); }
.btn-sm { height: 38px; padding: 0 18px; font-size: 14px; }
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 999;
  height: var(--nav-h);
  background: rgba(247,245,240,0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.site-header.scrolled {
  background: rgba(255,255,255,0.96);
  border-bottom-color: var(--border);
  box-shadow: 0 2px 12px rgba(31,42,46,0.06);
}
.header-inner { display: flex; align-items: center; height: 100%; gap: 28px; }
.brand-logo {
  display: flex; align-items: center; gap: 8px;
  font-size: 20px; font-weight: 700; color: var(--text); letter-spacing: .5px;
  white-space: nowrap;
}
.brand-logo:hover { color: var(--text); }
.logo-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 4px rgba(14,124,115,0.15);
  flex-shrink: 0;
}
.main-nav { display: flex; align-items: center; gap: 8px; margin-left: 8px; }
.nav-link {
  display: inline-flex; align-items: center; height: 38px; padding: 0 16px;
  border-radius: 999px; font-size: 15px; color: var(--text-secondary);
  font-weight: 500; transition: all .25s ease;
}
.nav-link:hover { color: var(--primary); background: var(--bg-alt); }
.nav-link.active { color: #fff; background: var(--primary); }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.header-cta { white-space: nowrap; }
.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 40px; height: 40px; padding: 8px;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: all .3s ease; }
.article-hero {
  padding: calc(var(--nav-h) + 56px) 0 52px;
  background-size: cover; background-position: center;
  position: relative;
}
.article-hero::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(120deg, rgba(10,93,86,0.55) 0%, rgba(31,42,46,0.45) 100%);
}
.article-hero .container { position: relative; z-index: 2; }
.breadcrumb {
  display: flex; align-items: center; flex-wrap: wrap; gap: 8px;
  font-size: 14px; color: rgba(255,255,255,0.88); margin-bottom: 18px;
}
.breadcrumb a { color: rgba(255,255,255,0.88); transition: color .2s ease; }
.breadcrumb a:hover { color: #fff; }
.crumb-sep { color: rgba(255,255,255,0.5); }
.crumb-current { display: inline-block; max-width: 420px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: rgba(255,255,255,0.95); }
.article-hero h1 {
  font-size: 34px; font-weight: 700; line-height: 1.25; color: #fff;
  max-width: 840px; margin-bottom: 22px;
  text-shadow: 0 2px 14px rgba(0,0,0,0.18);
}
.article-meta { display: flex; flex-wrap: wrap; gap: 20px; font-size: 14px; color: rgba(255,255,255,0.92); }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta i { font-size: 13px; opacity: .8; }
.article-section { padding: 52px 0 64px; }
.article-body { font-size: 16px; line-height: 1.75; color: var(--text); }
.article-body p { margin-bottom: 1.2em; }
.article-body h2 {
  font-size: 26px; font-weight: 700; line-height: 1.3;
  margin-top: 1.8em; margin-bottom: .6em;
  padding-left: 14px; border-left: 4px solid var(--primary);
}
.article-body h3 { font-size: 20px; font-weight: 600; margin-top: 1.5em; margin-bottom: .5em; }
.article-body img { border-radius: 12px; margin: 1.2em auto; box-shadow: var(--shadow-sm); }
.article-body blockquote {
  margin: 1.6em 0; padding: 16px 20px;
  border-left: 4px solid var(--primary);
  background: var(--bg-alt);
  border-radius: 0 12px 12px 0;
  color: var(--text-secondary);
}
.article-body ul, .article-body ol { margin: 1em 0 1.2em; padding-left: 1.6em; }
.article-body li { margin-bottom: .5em; }
.article-body table { width: 100%; border-collapse: collapse; margin: 1.5em 0; font-size: 14px; }
.article-body th, .article-body td { border: 1px solid var(--border); padding: 10px 14px; text-align: left; }
.article-body th { background: var(--bg-alt); font-weight: 600; }
.article-body a { text-decoration: underline; text-underline-offset: 4px; }
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 36px; }
.tag {
  display: inline-flex; align-items: center; padding: 5px 14px;
  border-radius: 999px; background: var(--bg-alt); color: var(--text-secondary);
  font-size: 13px; transition: background .25s ease, color .25s ease;
}
.tag:hover { background: var(--primary); color: #fff; }
.share-box {
  display: flex; align-items: center; flex-wrap: wrap; gap: 14px;
  margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--border);
}
.share-label { font-size: 14px; color: var(--text-secondary); font-weight: 600; margin-right: 4px; }
.share-btn {
  display: inline-flex; align-items: center; gap: 8px; height: 38px; padding: 0 18px;
  border-radius: 999px; background: #F0F0F0; font-size: 14px; color: var(--text-secondary);
  transition: all .25s ease;
}
.share-btn:hover { background: var(--primary); color: #fff; transform: translateY(-1px); }
.article-empty {
  min-height: 50vh; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 20px; text-align: center; padding: 80px 24px;
  background: #fff; border: 1px dashed var(--border); border-radius: var(--radius);
  font-size: 18px; color: var(--text-secondary);
}
.related-section { background: var(--bg-alt); padding: var(--space-section) 0; }
.section-title {
  font-size: 28px; font-weight: 700; margin-bottom: 32px;
  position: relative; padding-left: 16px;
}
.section-title::before {
  content: ''; position: absolute; left: 0; top: 6px; bottom: 6px;
  width: 4px; border-radius: 4px; background: var(--primary);
}
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: transform .3s ease, box-shadow .3s ease;
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.related-thumb { position: relative; overflow: hidden; }
.related-thumb img { width: 100%; height: 170px; object-fit: cover; transition: transform .4s ease; }
.related-card:hover .related-thumb img { transform: scale(1.04); }
.related-info { padding: 18px; }
.related-info h3 {
  font-size: 16px; font-weight: 600; line-height: 1.5; margin-bottom: 10px;
  color: var(--text); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.related-info h3:hover { color: var(--primary); }
.related-info .tag { font-size: 12px; padding: 3px 12px; }
.back-btn-wrap { text-align: center; padding: 40px 0; }
.site-footer { background: #1F2A2E; color: #C6D0D4; padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-logo {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 16px;
}
.footer-logo .logo-dot { background: var(--primary-light); box-shadow: 0 0 0 4px rgba(55,181,165,0.15); }
.footer-brand p { font-size: 14px; color: #8A9DA4; line-height: 1.8; max-width: 320px; }
.footer-col h4 { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 14px; }
.footer-col a { display: block; font-size: 13px; color: #8A9DA4; padding: 4px 0; transition: color .25s ease; }
.footer-col a:hover { color: #fff; }
.footer-col p { font-size: 13px; color: #8A9DA4; padding: 3px 0; }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 0; border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 12px; color: #8A9DA4;
}
::selection { background: rgba(55,181,165,0.25); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
@media (max-width: 1024px) {
  .header-inner { gap: 18px; }
  .nav-link { padding: 0 12px; font-size: 14px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .article-hero h1 { font-size: 30px; }
}
@media (max-width: 768px) {
  :root { --space-section: 36px; }
  .article-hero { padding: calc(var(--nav-h) + 36px) 0 36px; }
  .article-hero h1 { font-size: 26px; }
  .nav-toggle { display: flex; margin-left: auto; }
  .header-cta { display: none; }
  .header-inner { gap: 12px; }
  .main-nav {
    position: fixed; top: var(--nav-h); right: 0;
    width: min(320px, 82vw); height: calc(100vh - var(--nav-h));
    flex-direction: column; align-items: stretch; gap: 4px;
    padding: 24px 20px; background: #fff;
    box-shadow: -6px 0 24px rgba(31,42,46,0.08);
    transform: translateX(105%); transition: transform .3s ease;
    overflow-y: auto;
  }
  .main-nav.open { transform: translateX(0); }
  .nav-link {
    padding: 14px 16px; height: auto; border-radius: 10px;
    font-size: 15px; justify-content: flex-start;
  }
  .article-meta { gap: 10px; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .article-body h2 { font-size: 23px; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .article-meta { flex-direction: column; gap: 8px; }
  .share-box { flex-wrap: wrap; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .article-hero h1 { font-size: 23px; }
  .section-title { font-size: 24px; }
  .related-thumb img { height: 150px; }
}