/* roulang page: index */
:root {
  --primary: #2B7A78;
  --primary-dark: #1F5E5C;
  --primary-light: #3A9A98;
  --accent: #3A506B;
  --accent-light: #4B6A8A;
  --cta: #F4A261;
  --cta-hover: #E08A4A;
  --gold: #E9C46A;
  --bg: #FBF9F8;
  --white: #FFFFFF;
  --text: #2D3436;
  --title: #1A1A2E;
  --text-light: #636E72;
  --border: #E2E8F0;
  --card-shadow: 0 4px 20px rgba(0,0,0,0.06);
  --card-shadow-hover: 0 8px 32px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --font-stack: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --transition: 0.3s ease;
  --max-width: 1200px;
  --header-height: 70px;
  --space-section: 80px;
  --space-section-mobile: 40px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-stack);font-size:1rem;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-sm)}
a{color:var(--primary);text-decoration:none;transition:color var(--transition)}
a:hover,a:focus{color:var(--primary-dark);outline:none}
a:active{color:var(--primary-dark)}
button,.button{cursor:pointer;transition:all var(--transition);font-family:var(--font-stack)}
input,textarea,select{font-family:var(--font-stack);transition:border-color var(--transition)}
h1,h2,h3,h4,h5,h6{color:var(--title);font-weight:700;line-height:1.2;margin-bottom:0.5em}
h1{font-size:2.5rem;font-weight:800}
h2{font-size:2rem;font-weight:700}
h3{font-size:1.5rem;font-weight:600}
p{margin-bottom:1em;color:var(--text)}
.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}
.section{padding:var(--space-section) 0}
.section-alt{background:var(--white)}
.section-dark{background:var(--accent);color:var(--white)}
.section-dark h2,.section-dark h3,.section-dark p{color:var(--white)}
.section-title{text-align:center;margin-bottom:3rem}
.section-title h2{position:relative;display:inline-block;padding-bottom:16px}
.section-title h2::after{content:'';position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:60px;height:3px;background:var(--cta);border-radius:2px}
.section-title p{max-width:700px;margin:0.75rem auto 0;color:var(--text-light);font-size:1.05rem}
/* header & nav */
.header{position:sticky;top:0;z-index:1000;background:var(--white);box-shadow:0 2px 16px rgba(0,0,0,0.06);height:var(--header-height);display:flex;align-items:center}
.header .container{display:flex;align-items:center;justify-content:space-between;width:100%}
.logo{font-size:1.5rem;font-weight:800;color:var(--title);letter-spacing:0.5px}
.logo span{color:var(--primary)}
.nav{display:flex;align-items:center;gap:2rem}
.nav a{font-size:0.95rem;font-weight:500;color:var(--text);padding:0.25rem 0;position:relative;white-space:nowrap}
.nav a::after{content:'';position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--primary);transition:width var(--transition);border-radius:1px}
.nav a:hover::after,.nav a.active::after{width:100%}
.nav a:hover{color:var(--primary)}
.nav a.active{color:var(--primary);font-weight:600}
.hamburger{display:none;flex-direction:column;justify-content:center;align-items:center;width:36px;height:36px;cursor:pointer;background:none;border:none;padding:4px;border-radius:6px;transition:background var(--transition)}
.hamburger:hover{background:var(--border)}
.hamburger span{display:block;width:22px;height:2px;background:var(--title);margin:3px 0;border-radius:2px;transition:all var(--transition)}
.mobile-nav{display:none;position:fixed;top:var(--header-height);left:0;right:0;bottom:0;background:var(--white);z-index:999;padding:2rem 1.5rem;overflow-y:auto;box-shadow:0 8px 32px rgba(0,0,0,0.1)}
.mobile-nav.open{display:flex;flex-direction:column;gap:1.25rem}
.mobile-nav a{font-size:1.15rem;font-weight:500;color:var(--text);padding:0.75rem 0;border-bottom:1px solid var(--border);display:block}
.mobile-nav a.active{color:var(--primary);font-weight:700}
.mobile-nav a:last-child{border-bottom:none}
/* hero */
.hero{position:relative;min-height:80vh;display:flex;align-items:center;justify-content:center;text-align:center;background:url('/assets/images/backpic/back-1.png') center center / cover no-repeat;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg, rgba(26,26,46,0.7) 0%, rgba(43,122,120,0.55) 100%);z-index:1}
.hero .container{position:relative;z-index:2;padding:3rem 20px}
.hero h1{font-size:3rem;font-weight:800;color:var(--white);text-shadow:0 2px 12px rgba(0,0,0,0.25);margin-bottom:1rem;line-height:1.15}
.hero .subtitle{font-size:1.25rem;color:rgba(255,255,255,0.9);max-width:680px;margin:0 auto 2rem;text-shadow:0 1px 6px rgba(0,0,0,0.2)}
.hero .button{display:inline-block;padding:0.9rem 2.5rem;font-size:1.05rem;font-weight:600;border-radius:var(--radius-sm);background:var(--cta);color:var(--white);border:none;box-shadow:0 4px 16px rgba(244,162,97,0.35);transition:all var(--transition)}
.hero .button:hover,.hero .button:focus{background:var(--cta-hover);transform:translateY(-2px);box-shadow:0 6px 24px rgba(244,162,97,0.4);color:var(--white)}
/* value cards */
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.value-card{background:var(--white);border-radius:var(--radius);padding:2rem 1.75rem;box-shadow:var(--card-shadow);text-align:center;transition:all var(--transition);border:1px solid rgba(226,232,240,0.4)}
.value-card:hover{box-shadow:var(--card-shadow-hover);transform:translateY(-4px)}
.value-card .icon{font-size:2.25rem;color:var(--primary);margin-bottom:1rem;display:inline-block;background:rgba(43,122,120,0.08);width:64px;height:64px;line-height:64px;border-radius:50%;transition:background var(--transition)}
.value-card:hover .icon{background:rgba(43,122,120,0.15)}
.value-card h3{font-size:1.25rem;margin-bottom:0.6rem}
.value-card p{font-size:0.95rem;color:var(--text-light);margin-bottom:0}
/* feature blocks */
.feature-block{display:flex;align-items:center;gap:50px;margin-bottom:3.5rem}
.feature-block:last-child{margin-bottom:0}
.feature-block.reverse{flex-direction:row-reverse}
.feature-block .feature-img{flex:0 0 45%;border-radius:var(--radius);overflow:hidden;box-shadow:var(--card-shadow)}
.feature-block .feature-img img{width:100%;height:280px;object-fit:cover;transition:transform 0.5s ease}
.feature-block .feature-img:hover img{transform:scale(1.03)}
.feature-block .feature-text{flex:1}
.feature-block .feature-text h3{font-size:1.4rem;margin-bottom:0.5rem;color:var(--title)}
.feature-block .feature-text p{color:var(--text-light);font-size:0.98rem;margin-bottom:0.8rem}
.feature-block .feature-text .tag{display:inline-block;background:rgba(43,122,120,0.1);color:var(--primary);font-size:0.8rem;padding:0.2rem 0.8rem;border-radius:20px;font-weight:500;margin-bottom:0.75rem}
/* scene cards */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.scene-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--card-shadow);transition:all var(--transition);border:1px solid rgba(226,232,240,0.3)}
.scene-card:hover{box-shadow:var(--card-shadow-hover);transform:translateY(-4px)}
.scene-card .scene-img{height:180px;overflow:hidden}
.scene-card .scene-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
.scene-card:hover .scene-img img{transform:scale(1.05)}
.scene-card .scene-body{padding:1.25rem 1.5rem 1.5rem}
.scene-card .scene-body h3{font-size:1.1rem;margin-bottom:0.4rem}
.scene-card .scene-body p{font-size:0.9rem;color:var(--text-light);margin-bottom:0.8rem}
.scene-card .scene-body .link{font-size:0.9rem;font-weight:600;color:var(--primary)}
.scene-card .scene-body .link i{font-size:0.75rem;margin-left:4px}
/* case cards */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.case-card{background:var(--white);border-radius:var(--radius);padding:1.75rem;box-shadow:var(--card-shadow);transition:all var(--transition);border:1px solid rgba(226,232,240,0.3);display:flex;flex-direction:column}
.case-card:hover{box-shadow:var(--card-shadow-hover);transform:translateY(-4px)}
.case-card .case-logo{width:56px;height:56px;border-radius:50%;background:rgba(43,122,120,0.08);display:flex;align-items:center;justify-content:center;font-size:1.5rem;color:var(--primary);margin-bottom:1rem}
.case-card h3{font-size:1.15rem;margin-bottom:0.4rem}
.case-card .case-desc{font-size:0.92rem;color:var(--text-light);flex:1;margin-bottom:1rem}
.case-card .case-metric{font-size:1.5rem;font-weight:800;color:var(--gold);margin-bottom:0.2rem}
.case-card .case-metric-label{font-size:0.85rem;color:var(--text-light)}
/* cms list */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.news-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--card-shadow);transition:all var(--transition);border:1px solid rgba(226,232,240,0.3);display:flex;flex-direction:column}
.news-card:hover{box-shadow:var(--card-shadow-hover);transform:translateY(-3px)}
.news-card .news-img{height:160px;overflow:hidden;background:var(--border)}
.news-card .news-img img{width:100%;height:100%;object-fit:cover}
.news-card .news-body{padding:1.25rem 1.5rem 1.5rem;flex:1;display:flex;flex-direction:column}
.news-card .news-body .news-tag{display:inline-block;font-size:0.75rem;font-weight:600;color:var(--primary);background:rgba(43,122,120,0.08);padding:0.15rem 0.7rem;border-radius:20px;margin-bottom:0.5rem;align-self:flex-start}
.news-card .news-body h3{font-size:1.05rem;margin-bottom:0.4rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.4}
.news-card .news-body .news-excerpt{font-size:0.88rem;color:var(--text-light);flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:0.75rem}
.news-card .news-body .news-meta{font-size:0.8rem;color:var(--text-light);display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--border);padding-top:0.75rem;margin-top:auto}
.news-card .news-body .news-meta .date{color:var(--text-light)}
.news-card .news-body .news-meta .read-more{color:var(--primary);font-weight:600;font-size:0.85rem}
.news-empty{padding:2rem;text-align:center;color:var(--text-light);background:var(--white);border-radius:var(--radius);box-shadow:var(--card-shadow);font-size:1rem}
/* faq */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden;background:var(--white);transition:box-shadow var(--transition)}
.faq-item:hover{box-shadow:0 2px 12px rgba(0,0,0,0.04)}
.faq-item .faq-q{display:flex;justify-content:space-between;align-items:center;padding:1.1rem 1.5rem;cursor:pointer;font-weight:600;font-size:1rem;color:var(--title);background:var(--white);transition:background var(--transition);border:none;width:100%;text-align:left;font-family:var(--font-stack)}
.faq-item .faq-q:hover{background:rgba(43,122,120,0.03)}
.faq-item .faq-q i{font-size:0.85rem;color:var(--primary);transition:transform var(--transition)}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-item .faq-a{padding:0 1.5rem 1.25rem;display:none;font-size:0.95rem;color:var(--text-light);line-height:1.75}
.faq-item.open .faq-a{display:block}
/* cta */
.cta-section{background:linear-gradient(135deg, var(--accent) 0%, #1A2A3E 100%);padding:4rem 0;text-align:center}
.cta-section h2{color:var(--white);font-size:2.2rem;margin-bottom:0.75rem}
.cta-section p{color:rgba(255,255,255,0.8);font-size:1.1rem;max-width:600px;margin:0 auto 2rem}
.cta-section .button{display:inline-block;padding:0.9rem 2.8rem;font-size:1.05rem;font-weight:600;border-radius:var(--radius-sm);background:var(--cta);color:var(--white);border:none;box-shadow:0 4px 16px rgba(244,162,97,0.3);transition:all var(--transition)}
.cta-section .button:hover,.cta-section .button:focus{background:var(--cta-hover);transform:translateY(-2px);box-shadow:0 6px 24px rgba(244,162,97,0.4);color:var(--white)}
/* footer */
.footer{background:#1A1A2E;color:rgba(255,255,255,0.8);padding:3rem 0 1.5rem}
.footer .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:2rem}
.footer .footer-brand .logo{color:var(--white);font-size:1.35rem;margin-bottom:0.75rem;display:block}
.footer .footer-brand p{font-size:0.9rem;color:rgba(255,255,255,0.6);max-width:320px;line-height:1.7}
.footer .footer-col h4{font-size:1rem;color:var(--white);margin-bottom:1rem;font-weight:600}
.footer .footer-col a{display:block;font-size:0.9rem;color:rgba(255,255,255,0.6);padding:0.3rem 0;transition:color var(--transition)}
.footer .footer-col a:hover{color:var(--gold)}
.footer .footer-social{display:flex;gap:12px;margin-top:1rem}
.footer .footer-social a{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,0.08);color:rgba(255,255,255,0.7);font-size:1rem;transition:all var(--transition)}
.footer .footer-social a:hover{background:var(--primary);color:var(--white)}
.footer .footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding-top:1.25rem;text-align:center;font-size:0.85rem;color:rgba(255,255,255,0.4)}
/* responsive */
@media (max-width:1023px){
  .value-grid,.scene-grid,.case-grid,.news-grid{grid-template-columns:repeat(2,1fr)}
  .feature-block{flex-direction:column;gap:30px}
  .feature-block.reverse{flex-direction:column}
  .feature-block .feature-img{flex:0 0 100%;width:100%}
  .feature-block .feature-img img{height:220px}
  .footer .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  :root{--header-height:60px;--space-section:var(--space-section-mobile)}
  .nav{display:none}
  .hamburger{display:flex}
  h1{font-size:2rem}
  h2{font-size:1.6rem}
  h3{font-size:1.2rem}
  .hero{min-height:60vh}
  .hero h1{font-size:2rem}
  .hero .subtitle{font-size:1rem}
  .value-grid,.scene-grid,.case-grid,.news-grid{grid-template-columns:1fr}
  .feature-block .feature-img img{height:180px}
  .footer .footer-grid{grid-template-columns:1fr;gap:30px}
  .cta-section h2{font-size:1.6rem}
  .section-title h2{font-size:1.5rem}
}
@media (max-width:520px){
  .hero h1{font-size:1.7rem}
  .hero .subtitle{font-size:0.95rem}
  .hero .button{padding:0.75rem 1.8rem;font-size:0.95rem}
  .container{padding:0 16px}
}
/* utility */
.text-center{text-align:center}
.mt-1{margin-top:1rem}
.mt-2{margin-top:2rem}
.mb-1{margin-bottom:1rem}
.mb-2{margin-bottom:2rem}

/* roulang page: category1 */
:root {
            --primary: #2B7A78;
            --primary-dark: #1F5E5C;
            --secondary: #F4A261;
            --gold: #E9C46A;
            --bg: #FBF9F8;
            --white: #ffffff;
            --text: #2D3436;
            --title: #1A1A2E;
            --muted: #636E72;
            --border: #E2E8F0;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --transition: 0.3s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --container: 1200px;
            --nav-height: 70px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-stack);
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header / Nav */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--title);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 2px;
        }
        .logo span {
            color: var(--primary);
        }
        .logo:hover {
            color: var(--title);
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text);
            transition: var(--transition);
            position: relative;
        }
        .nav a:hover {
            background: rgba(43, 122, 120, 0.08);
            color: var(--primary);
        }
        .nav a.active {
            background: var(--primary);
            color: #fff;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: 6px;
            transition: var(--transition);
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 3px;
            background: var(--title);
            border-radius: 3px;
            transition: var(--transition);
        }
        .hamburger:hover {
            background: rgba(0, 0, 0, 0.05);
        }

        /* Mobile Nav */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(20px);
            z-index: 2000;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 20px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .mobile-nav.open {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-nav a {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--title);
            padding: 12px 30px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .mobile-nav a:hover {
            background: rgba(43, 122, 120, 0.1);
            color: var(--primary);
        }
        .mobile-nav a.active {
            background: var(--primary);
            color: #fff;
        }
        .mobile-nav-close {
            position: absolute;
            top: 20px;
            right: 20px;
            background: none;
            border: none;
            font-size: 2rem;
            cursor: pointer;
            color: var(--title);
            padding: 8px 12px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .mobile-nav-close:hover {
            background: rgba(0, 0, 0, 0.05);
        }

        /* Hero */
        .hero {
            background: linear-gradient(135deg, rgba(26, 26, 46, 0.85) 0%, rgba(43, 122, 120, 0.75) 100%), url(/assets/images/backpic/back-2.png) center center / cover no-repeat;
            min-height: 50vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 80px 20px 60px;
            position: relative;
        }
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
        }
        .hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 700px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .hero .cta-btn {
            display: inline-block;
            background: var(--secondary);
            color: #fff;
            padding: 14px 40px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(244, 162, 97, 0.4);
        }
        .hero .cta-btn:hover {
            background: #e08f4a;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(244, 162, 97, 0.5);
            color: #fff;
        }

        /* Breadcrumb */
        .breadcrumb {
            padding: 16px 0;
            font-size: 0.9rem;
            color: var(--muted);
            background: var(--white);
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            color: var(--primary-dark);
        }
        .breadcrumb span {
            margin: 0 8px;
            color: var(--border);
        }
        .breadcrumb .current {
            color: var(--muted);
            font-weight: 500;
        }

        /* Section common */
        section {
            padding: 80px 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-title h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--title);
            margin-bottom: 12px;
        }
        .section-title p {
            font-size: 1.05rem;
            color: var(--muted);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.8;
        }

        /* Case Cards */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }
        .case-card {
            background: var(--white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .case-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .case-card .card-img {
            height: 220px;
            background: var(--border) center center / cover no-repeat;
            position: relative;
        }
        .case-card .card-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--secondary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .case-card .card-body {
            padding: 24px 28px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .case-card .card-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--title);
            margin-bottom: 10px;
        }
        .case-card .card-body .industry {
            font-size: 0.85rem;
            color: var(--primary);
            font-weight: 500;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .case-card .card-body .industry i {
            font-size: 0.8rem;
        }
        .case-card .card-body p {
            font-size: 0.95rem;
            color: var(--muted);
            line-height: 1.7;
            flex: 1;
        }
        .case-card .card-body .case-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 18px;
            padding-top: 16px;
            border-top: 1px solid var(--border);
            font-size: 0.85rem;
            color: var(--muted);
        }
        .case-card .card-body .case-meta .data {
            font-weight: 700;
            color: var(--primary);
            font-size: 1rem;
        }

        /* Process / Steps */
        .process-section {
            background: var(--white);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            text-align: center;
            padding: 32px 20px 28px;
            border-radius: var(--radius);
            background: var(--bg);
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover {
            background: var(--white);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .step-card .step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            transition: var(--transition);
        }
        .step-card:hover .step-num {
            background: var(--secondary);
            transform: scale(1.05);
        }
        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--title);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.7;
        }

        /* Testimonials / Quote */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .testimonial-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 32px 30px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border-left: 4px solid var(--primary);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .testimonial-card .quote {
            font-size: 0.95rem;
            color: var(--text);
            line-height: 1.8;
            margin-bottom: 18px;
            font-style: italic;
        }
        .testimonial-card .quote i {
            color: var(--primary);
            opacity: 0.3;
            font-size: 1.4rem;
            margin-right: 6px;
        }
        .testimonial-card .author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-card .author .avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--muted);
            font-size: 1.2rem;
            font-weight: 600;
        }
        .testimonial-card .author .info strong {
            font-size: 0.95rem;
            color: var(--title);
            display: block;
        }
        .testimonial-card .author .info span {
            font-size: 0.8rem;
            color: var(--muted);
        }

        /* FAQ */
        .faq-section {
            background: var(--white);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
        }
        .faq-question {
            padding: 18px 24px;
            background: var(--bg);
            font-weight: 600;
            font-size: 1rem;
            color: var(--title);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
            border: none;
            width: 100%;
            text-align: left;
            font-family: inherit;
        }
        .faq-question:hover {
            background: rgba(43, 122, 120, 0.06);
        }
        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--primary);
            font-size: 0.85rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            background: var(--white);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 18px 24px 24px;
        }
        .faq-answer p {
            font-size: 0.95rem;
            color: var(--muted);
            line-height: 1.8;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            text-align: center;
            padding: 80px 20px;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .cta-section .cta-btn {
            display: inline-block;
            background: var(--secondary);
            color: #fff;
            padding: 16px 44px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.1rem;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(244, 162, 97, 0.4);
        }
        .cta-section .cta-btn:hover {
            background: #e08f4a;
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(244, 162, 97, 0.5);
            color: #fff;
        }

        /* Footer */
        .footer {
            background: #1A1A2E;
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 30px;
        }
        .footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer .footer-brand .logo {
            color: #fff;
            font-size: 1.5rem;
            margin-bottom: 12px;
            display: inline-block;
        }
        .footer .footer-brand .logo span {
            color: var(--primary);
        }
        .footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            max-width: 320px;
        }
        .footer .footer-social {
            display: flex;
            gap: 14px;
            margin-top: 18px;
        }
        .footer .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer .footer-col h4 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer .footer-col a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }

        /* Responsive */
        @media (max-width: 1023px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 1rem;
            }
        }
        @media (max-width: 767px) {
            .nav {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-nav {
                display: flex;
            }
            .hero {
                min-height: 40vh;
                padding: 60px 20px 40px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero p {
                font-size: 0.95rem;
            }
            section {
                padding: 50px 0;
            }
            .section-title {
                margin-bottom: 30px;
            }
            .section-title h2 {
                font-size: 1.5rem;
            }
            .case-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer .footer-brand p {
                max-width: 100%;
            }
            .hero .cta-btn {
                padding: 12px 30px;
                font-size: 0.95rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section .cta-btn {
                padding: 14px 32px;
                font-size: 1rem;
            }
            .case-card .card-img {
                height: 180px;
            }
        }
        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.5rem;
            }
            .hero p {
                font-size: 0.9rem;
            }
            .container {
                padding: 0 14px;
            }
            .case-card .card-body {
                padding: 18px 20px 22px;
            }
            .faq-question {
                padding: 14px 18px;
                font-size: 0.95rem;
            }
            .faq-item.open .faq-answer {
                padding: 14px 18px 18px;
            }
        }

        /* JSON-LD hidden */
        .hidden-ld {
            display: none;
        }

/* roulang page: article */
:root {
            --primary: #2B7A78;
            --primary-dark: #1F5E5C;
            --secondary: #F4A261;
            --accent-gold: #E9C46A;
            --deep-navy: #3A506B;
            --bg-light: #FBF9F8;
            --bg-white: #FFFFFF;
            --text-body: #2D3436;
            --text-heading: #1A1A2E;
            --text-muted: #636E72;
            --border: #E2E8F0;
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
            --transition: 0.3s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --container-max: 1200px;
        }

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

        html { scroll-behavior: smooth; }

        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

        img { max-width: 100%; height: auto; display: block; border-radius: 8px; }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== Header & Nav ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            height: 70px;
            display: flex;
            align-items: center;
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-heading);
            letter-spacing: -0.5px;
        }
        .logo span { color: var(--primary); }
        .logo:hover { color: var(--text-heading); }

        .nav {
            display: flex;
            gap: 32px;
            align-items: center;
        }
        .nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
        }
        .nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
        }
        .nav a:hover { color: var(--primary); }
        .nav a:hover::after { width: 100%; }
        .nav a.active { color: var(--primary); font-weight: 600; }
        .nav a.active::after { width: 100%; }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 3px;
            background: var(--text-heading);
            border-radius: 3px;
            transition: var(--transition);
        }

        /* Mobile Nav Overlay */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            height: calc(100vh - 70px);
            background: rgba(255,255,255,0.98);
            backdrop-filter: blur(12px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: flex-start;
            padding: 40px 20px;
            gap: 20px;
            border-top: 1px solid var(--border);
        }
        .mobile-nav-overlay.open { display: flex; }
        .mobile-nav-overlay a {
            font-size: 1.3rem;
            font-weight: 500;
            color: var(--text-heading);
            padding: 12px 0;
            width: 100%;
            text-align: center;
            border-bottom: 1px solid var(--border);
        }
        .mobile-nav-overlay a.active { color: var(--primary); font-weight: 700; }
        .mobile-nav-overlay a:last-child { border-bottom: none; }

        /* ===== Article Page ===== */
        .article-page {
            padding: 40px 0 80px;
            background: var(--bg-white);
        }

        .breadcrumb {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb a { color: var(--primary); }
        .breadcrumb a:hover { color: var(--primary-dark); }
        .breadcrumb span { color: var(--text-muted); }

        .article-header {
            margin-bottom: 40px;
        }
        .article-header h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-heading);
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .article-meta .category-tag {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
        }
        .article-meta .date {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .date i { font-size: 0.85rem; }

        .article-featured-image {
            margin-bottom: 32px;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .article-featured-image img {
            width: 100%;
            height: auto;
            max-height: 480px;
            object-fit: cover;
        }

        .article-content {
            max-width: 800px;
            margin: 0 auto;
            font-size: 1.05rem;
            line-height: 1.8;
            color: var(--text-body);
        }
        .article-content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-heading);
            margin: 36px 0 16px;
        }
        .article-content h3 {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--text-heading);
            margin: 28px 0 12px;
        }
        .article-content p {
            margin-bottom: 18px;
        }
        .article-content ul, .article-content ol {
            margin: 16px 0 18px 24px;
        }
        .article-content li { margin-bottom: 8px; }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: #f0f7f6;
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 8px 8px 0;
            font-style: italic;
            color: var(--text-muted);
        }
        .article-content img {
            margin: 24px auto;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
        }
        .article-content a { text-decoration: underline; text-underline-offset: 2px; }

        .article-not-found {
            text-align: center;
            padding: 80px 20px;
        }
        .article-not-found h2 {
            font-size: 2rem;
            color: var(--text-heading);
            margin-bottom: 16px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .article-not-found .btn {
            display: inline-block;
        }

        /* ===== Related Section ===== */
        .related-section {
            background: var(--bg-light);
            padding: 60px 0;
        }
        .related-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-heading);
            text-align: center;
            margin-bottom: 40px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .related-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .meta {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .related-card .meta i { margin-right: 4px; }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--primary);
            padding: 60px 0;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.9;
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn-secondary {
            background: var(--secondary);
            color: #fff;
            padding: 14px 40px;
            border-radius: var(--radius-btn);
            font-size: 1.05rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            display: inline-block;
        }
        .cta-section .btn-secondary:hover {
            background: #e08f4a;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.2);
        }

        /* ===== Footer ===== */
        .footer {
            background: #1A1A2E;
            color: #ccc;
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 1.5rem;
            font-weight: 800;
            display: inline-block;
            margin-bottom: 16px;
        }
        .footer-brand .logo span { color: var(--primary); }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: #aaa;
            max-width: 320px;
        }
        .footer-social {
            display: flex;
            gap: 16px;
            margin-top: 20px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,0.08);
            border-radius: 50%;
            color: #ccc;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: #aaa;
            font-size: 0.9rem;
            padding: 6px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--primary); padding-left: 4px; }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            text-align: center;
            font-size: 0.85rem;
            color: #888;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-block;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 16px rgba(43,122,120,0.3); }
        .btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover { background: var(--primary); color: #fff; }

        /* ===== Responsive ===== */
        @media screen and (max-width: 1023px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media screen and (max-width: 767px) {
            .header { height: 60px; }
            .nav { display: none; }
            .hamburger { display: flex; }

            .article-header h1 { font-size: 1.6rem; }
            .article-content { font-size: 0.95rem; }
            .article-content h2 { font-size: 1.3rem; }
            .article-content h3 { font-size: 1.1rem; }

            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-brand p { max-width: 100%; }

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

        @media screen and (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-header h1 { font-size: 1.4rem; }
            .breadcrumb { font-size: 0.8rem; }
            .article-meta { flex-direction: column; align-items: flex-start; gap: 8px; }
            .cta-section h2 { font-size: 1.4rem; }
            .cta-section .btn-secondary { padding: 12px 28px; font-size: 0.95rem; }
        }

/* roulang page: category2 */
/* ===== Design Tokens ===== */
        :root {
            --primary: #2B7A78;
            --primary-dark: #1F5E5C;
            --primary-light: #3A9E9C;
            --accent: #F4A261;
            --accent-dark: #E07B3A;
            --gold: #E9C46A;
            --navy: #3A506B;
            --dark: #1A1A2E;
            --bg: #FBF9F8;
            --bg-light: #FFFFFF;
            --bg-muted: #F0EEED;
            --text: #2D3436;
            --text-light: #636E72;
            --text-heading: #1A1A2E;
            --border: #E2E8F0;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --transition: 0.3s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --header-height: 70px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-stack);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-heading); font-weight: 700; line-height: 1.3; }

        /* ===== Container ===== */
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; width: 100%; }

        /* ===== Header / Nav ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 1px 0 var(--border);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .header .container { display: flex; align-items: center; justify-content: space-between; }
        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 2px;
        }
        .logo span { color: var(--primary); }
        .logo:hover { color: var(--dark); }
        .nav { display: flex; align-items: center; gap: 32px; }
        .nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
        }
        .nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
            border-radius: 2px;
        }
        .nav a:hover { color: var(--primary); }
        .nav a:hover::after { width: 100%; }
        .nav a.active { color: var(--primary); }
        .nav a.active::after { width: 100%; }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .hamburger:hover { background: var(--bg-muted); }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--dark);
            border-radius: 4px;
            transition: all var(--transition);
        }
        .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* Mobile Nav Overlay */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            width: 100%;
            height: calc(100vh - var(--header-height));
            background: rgba(255,255,255,0.98);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: flex-start;
            padding: 40px 20px;
            gap: 20px;
            overflow-y: auto;
        }
        .mobile-nav-overlay.open { display: flex; }
        .mobile-nav-overlay a {
            font-size: 1.25rem;
            font-weight: 500;
            color: var(--text);
            padding: 12px 0;
            width: 100%;
            text-align: center;
            border-bottom: 1px solid var(--border);
            transition: color var(--transition);
        }
        .mobile-nav-overlay a:hover { color: var(--primary); }
        .mobile-nav-overlay a.active { color: var(--primary); font-weight: 700; }

        /* ===== Hero Section ===== */
        .hero {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, rgba(26,26,46,0.75) 0%, rgba(43,122,120,0.70) 100%), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            padding: 80px 20px;
        }
        .hero-content { max-width: 820px; position: relative; z-index: 2; }
        .hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 12px rgba(0,0,0,0.2);
        }
        .hero p {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.9);
            margin-bottom: 36px;
            line-height: 1.8;
            max-width: 680px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero .btn { font-size: 1.1rem; padding: 16px 48px; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-block;
            font-weight: 600;
            text-align: center;
            border: none;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: all var(--transition);
            padding: 14px 36px;
            font-size: 1rem;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
        }
        .btn-primary:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-secondary {
            background: var(--primary);
            color: #fff;
        }
        .btn-secondary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }

        /* ===== Section Common ===== */
        .section { padding: 80px 0; }
        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
        }
        .section-title p {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-bg-muted { background: var(--bg-muted); }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-light);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .card-image { width: 100%; height: 220px; object-fit: cover; }
        .card-body { padding: 28px 24px 32px; flex: 1; display: flex; flex-direction: column; }
        .card-body h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; color: var(--text-heading); }
        .card-body p { font-size: 0.95rem; color: var(--text-light); line-height: 1.7; margin-bottom: 16px; flex: 1; }
        .card-body .tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            background: rgba(43,122,120,0.12);
            color: var(--primary);
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .card-stat {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 12px;
            padding-top: 16px;
            border-top: 1px solid var(--border);
        }
        .card-stat-item { font-size: 0.9rem; color: var(--text-light); }
        .card-stat-item strong { color: var(--primary); font-size: 1.1rem; display: block; }

        /* ===== Stats / Data Block ===== */
        .stats-grid { display: flex; flex-wrap: wrap; gap: 30px; justify-content: center; }
        .stat-item {
            text-align: center;
            background: var(--bg-light);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            box-shadow: var(--shadow-sm);
            flex: 1 1 180px;
            max-width: 240px;
            transition: all var(--transition);
        }
        .stat-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-label { font-size: 0.95rem; color: var(--text-light); font-weight: 500; }

        /* ===== Process / Timeline ===== */
        .process-steps { display: flex; flex-wrap: wrap; gap: 30px; justify-content: center; counter-reset: step; }
        .process-step {
            background: var(--bg-light);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            flex: 1 1 240px;
            max-width: 300px;
            text-align: center;
            position: relative;
            transition: all var(--transition);
        }
        .process-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .process-step::before {
            counter-increment: step;
            content: counter(step);
            display: inline-block;
            width: 48px;
            height: 48px;
            line-height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .process-step h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
        .process-step p { font-size: 0.92rem; color: var(--text-light); line-height: 1.6; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-light);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-question {
            padding: 20px 28px;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-heading);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition);
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question .icon { font-size: 1.3rem; transition: transform var(--transition); color: var(--primary); }
        .faq-item.open .faq-question .icon { transform: rotate(45deg); }
        .faq-answer {
            padding: 0 28px 20px;
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 80px 20px;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 { font-size: 2.2rem; color: #fff; margin-bottom: 16px; }
        .cta-section p { font-size: 1.1rem; color: rgba(255,255,255,0.9); max-width: 600px; margin: 0 auto 32px; line-height: 1.7; }
        .cta-section .btn { background: var(--accent); color: #fff; }
        .cta-section .btn:hover { background: var(--accent-dark); }

        /* ===== Footer ===== */
        .footer {
            background: var(--dark);
            color: rgba(255,255,255,0.8);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo { font-size: 1.6rem; color: #fff; margin-bottom: 16px; display: inline-block; }
        .footer-brand .logo span { color: var(--accent); }
        .footer-brand p { font-size: 0.92rem; line-height: 1.7; margin-bottom: 20px; max-width: 360px; }
        .footer-social { display: flex; gap: 14px; }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.1);
            color: rgba(255,255,255,0.7);
            font-size: 1.1rem;
            transition: all var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.65);
            padding: 6px 0;
            transition: all var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: 24px 0;
            text-align: center;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.5);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .hero h1 { font-size: 2.4rem; }
            .hero p { font-size: 1.05rem; }
            .section { padding: 60px 0; }
            .section-title h2 { font-size: 1.8rem; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
        }

        @media (max-width: 767px) {
            .nav { display: none; }
            .hamburger { display: flex; }
            .hero { min-height: 60vh; padding: 60px 20px; }
            .hero h1 { font-size: 1.8rem; }
            .hero p { font-size: 0.95rem; margin-bottom: 28px; }
            .hero .btn { padding: 14px 32px; font-size: 1rem; }
            .section { padding: 40px 0; }
            .section-title { margin-bottom: 40px; }
            .section-title h2 { font-size: 1.5rem; }
            .section-title p { font-size: 0.92rem; }
            .stats-grid { flex-direction: column; align-items: center; }
            .stat-item { max-width: 100%; width: 100%; }
            .process-steps { flex-direction: column; align-items: center; }
            .process-step { max-width: 100%; width: 100%; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-brand p { max-width: 100%; }
            .cta-section { padding: 50px 20px; }
            .cta-section h2 { font-size: 1.6rem; }
            .card-image { height: 180px; }
        }

        @media (max-width: 520px) {
            .hero h1 { font-size: 1.5rem; }
            .hero p { font-size: 0.88rem; }
            .card-body { padding: 20px 16px 24px; }
            .card-body h3 { font-size: 1.1rem; }
            .faq-question { padding: 16px 18px; font-size: 0.95rem; }
            .faq-answer { padding: 0 18px 16px; font-size: 0.9rem; }
        }