/* roulang page: index */
:root {
    --primary: #0d2b52;
    --primary-2: #16417a;
    --accent: #e29b30;
    --accent-2: #f0b95c;
    --bg: #f5f7fb;
    --white: #ffffff;
    --dark: #0a1f38;
    --text: #1e293b;
    --muted: #637083;
    --light: #94a3b8;
    --line: #e2e8f0;
    --line-light: #edf1f7;
    --r-sm: 10px;
    --r-md: 16px;
    --r-lg: 24px;
    --shadow-xs: 0 2px 6px rgba(13,43,82,0.05);
    --shadow-sm: 0 4px 16px rgba(13,43,82,0.06);
    --shadow-md: 0 12px 32px rgba(13,43,82,0.10);
    --shadow-lg: 0 24px 64px rgba(13,43,82,0.14);
    --shadow-accent: 0 8px 24px rgba(226,155,48,0.35);
    --gradient-hero: linear-gradient(135deg, rgba(8,25,48,0.94) 0%, rgba(13,43,82,0.88) 45%, rgba(22,65,122,0.78) 100%);
    --gradient-accent: linear-gradient(135deg, #f0b95c 0%, #e29b30 100%);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; line-height: 1.7; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
button { font: inherit; border: none; background: none; cursor: pointer; color: inherit; }
input, select, textarea { font: inherit; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 90px 0; }
.section-alt { background: var(--white); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(226,155,48,0.1); color: var(--accent); font-size: 13px; font-weight: 600; padding: 6px 16px; border-radius: 999px; letter-spacing: 0.5px; margin-bottom: 16px; }
.section-title { font-size: clamp(28px, 4vw, 38px); font-weight: 700; color: var(--primary); line-height: 1.25; letter-spacing: -0.5px; }
.section-sub { font-size: 16px; color: var(--muted); margin-top: 12px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 32px; border-radius: 999px; font-size: 15px; font-weight: 600; line-height: 1; transition: var(--transition); white-space: nowrap; }
.btn-primary { background: var(--primary); color: var(--white); box-shadow: var(--shadow-md); }
.btn-primary:hover { background: var(--primary-2); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-accent { background: var(--gradient-accent); color: #1a2c3d; box-shadow: var(--shadow-accent); }
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(226,155,48,0.45); }
.btn-outline { background: transparent; border: 1.5px solid rgba(255,255,255,0.6); color: var(--white); }
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.9); transform: translateY(-2px); }
.btn-lg { padding: 17px 42px; font-size: 16px; }

/* ===== Header & Nav ===== */
.site-header { background: var(--white); border-bottom: 1px solid var(--line-light); position: sticky; top: 0; z-index: 100; box-shadow: var(--shadow-xs); }
.header-inner { display: flex; flex-direction: column; }
.header-main { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 700; color: var(--primary); letter-spacing: -0.3px; }
.brand-logo { width: 38px; height: 38px; border-radius: 10px; background: var(--primary); color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 800; flex-shrink: 0; }
.header-actions { display: flex; align-items: center; gap: 14px; }
.btn-sm { padding: 10px 20px; font-size: 14px; }
.main-nav { display: flex; gap: 8px; background: var(--bg); padding: 6px; border-radius: 16px; margin-bottom: 14px; flex-wrap: wrap; }
.nav-item { padding: 10px 24px; border-radius: 12px; font-size: 14.5px; font-weight: 500; color: var(--muted); transition: var(--transition); }
.nav-item:hover { color: var(--primary); background: rgba(13,43,82,0.06); }
.nav-item.active { background: var(--white); color: var(--primary); font-weight: 600; box-shadow: var(--shadow-sm); }
.menu-toggle { display: none; width: 42px; height: 42px; border-radius: 10px; background: var(--bg); flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.menu-toggle span { display: block; width: 20px; height: 2px; background: var(--primary); border-radius: 2px; transition: var(--transition); }

/* ===== Hero ===== */
.hero { background: var(--gradient-hero), url('/assets/images/backpic/back-1.png') center/cover no-repeat; color: var(--white); padding: 110px 0 80px; position: relative; overflow: hidden; }
.hero::after { content: ''; position: absolute; bottom: -1px; left: 0; right: 0; height: 60px; background: linear-gradient(to bottom, transparent, rgba(245,247,251,1)); }
.hero-content { max-width: 760px; position: relative; z-index: 2; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.22); color: var(--accent-2); font-size: 13px; font-weight: 600; padding: 8px 18px; border-radius: 999px; letter-spacing: 0.5px; margin-bottom: 28px; backdrop-filter: blur(4px); }
.hero-title { font-size: clamp(34px, 5.5vw, 54px); font-weight: 800; line-height: 1.15; letter-spacing: -1px; margin-bottom: 24px; }
.hero-title .highlight { color: var(--accent-2); position: relative; }
.hero-desc { font-size: clamp(16px, 2vw, 19px); color: rgba(255,255,255,0.85); line-height: 1.8; margin-bottom: 40px; max-width: 620px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 52px; }
.hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; max-width: 700px; padding-top: 40px; border-top: 1px solid rgba(255,255,255,0.15); }
.hero-stat-value { font-size: 26px; font-weight: 800; color: var(--white); }
.hero-stat-label { font-size: 13px; color: rgba(255,255,255,0.6); margin-top: 2px; }

/* ===== Features ===== */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-card { background: var(--white); border: 1px solid var(--line-light); border-radius: var(--r-md); padding: 36px 28px; transition: var(--transition); box-shadow: var(--shadow-xs); }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.feature-icon { width: 56px; height: 56px; border-radius: 14px; background: rgba(13,43,82,0.06); display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 20px; transition: var(--transition); }
.feature-card:hover .feature-icon { background: var(--primary); color: var(--accent); }
.feature-title { font-size: 17px; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.feature-desc { font-size: 14.5px; color: var(--muted); line-height: 1.7; }

/* ===== Categories ===== */
.categories-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.category-card { border-radius: var(--r-lg); overflow: hidden; position: relative; box-shadow: var(--shadow-md); transition: var(--transition); aspect-ratio: 16/9; min-height: 320px; }
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.category-card img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.category-card::before { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(8,25,48,0.92) 0%, rgba(13,43,82,0.55) 60%, rgba(13,43,82,0.2) 100%); z-index: 1; transition: var(--transition); }
.category-card:hover::before { background: linear-gradient(to top, rgba(8,25,48,0.96) 0%, rgba(13,43,82,0.65) 60%, rgba(13,43,82,0.3) 100%); }
.category-body { position: relative; z-index: 2; padding: 32px; display: flex; flex-direction: column; justify-content: flex-end; height: 100%; color: var(--white); }
.category-tag { display: inline-block; font-size: 12px; font-weight: 600; background: var(--accent); color: #1a2c3d; padding: 5px 14px; border-radius: 999px; margin-bottom: 12px; width: fit-content; }
.category-title { font-size: 24px; font-weight: 700; margin-bottom: 10px; line-height: 1.3; }
.category-desc { font-size: 14.5px; color: rgba(255,255,255,0.8); margin-bottom: 20px; line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.category-link { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; color: var(--accent-2); }
.category-link:hover { gap: 12px; color: var(--white); }

/* ===== News ===== */
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.news-card { background: var(--white); border: 1px solid var(--line-light); border-radius: var(--r-md); padding: 28px; transition: var(--transition); box-shadow: var(--shadow-xs); display: block; }
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: transparent; }
.news-card-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.news-tag { font-size: 12px; font-weight: 600; color: var(--accent); background: rgba(226,155,48,0.1); padding: 4px 14px; border-radius: 999px; }
.news-time { font-size: 13px; color: var(--light); }
.news-card h3 { font-size: 17px; font-weight: 700; color: var(--primary); line-height: 1.5; margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card p { font-size: 14px; color: var(--muted); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 18px; }
.news-more { display: inline-flex; align-items: center; gap: 6px; font-size: 13.5px; font-weight: 600; color: var(--primary); }
.news-more i { transition: var(--transition); font-style: normal; }
.news-card:hover .news-more { color: var(--accent); }
.news-card:hover .news-more i { transform: translateX(4px); }
.empty-state { grid-column: 1 / -1; text-align: center; padding: 60px 20px; background: var(--white); border-radius: var(--r-md); border: 1px dashed var(--line); color: var(--muted); }

/* ===== Stats Band ===== */
.stats-band { background: var(--primary); background-image: linear-gradient(135deg, rgba(8,25,48,0.92) 0%, rgba(13,43,82,0.85) 50%, rgba(22,65,122,0.8) 100%), url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center; color: var(--white); padding: 80px 0; position: relative; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; text-align: center; }
.stat-value { font-size: clamp(30px, 4vw, 42px); font-weight: 800; line-height: 1.2; }
.stat-value .unit { font-size: 20px; font-weight: 600; color: var(--accent-2); margin-left: 4px; }
.stat-label { font-size: 14px; color: rgba(255,255,255,0.65); margin-top: 8px; }
.stat-icon { font-size: 24px; margin-bottom: 12px; color: var(--accent-2); }

/* ===== Process ===== */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; position: relative; }
.process-grid::before { content: ''; position: absolute; top: 40px; left: 10%; right: 10%; height: 2px; background: linear-gradient(to right, var(--line), var(--accent), var(--line)); border-radius: 2px; }
.process-step { text-align: center; position: relative; }
.step-num { width: 80px; height: 80px; border-radius: 50%; background: var(--white); border: 2px solid var(--accent); display: flex; align-items: center; justify-content: center; font-size: 24px; font-weight: 800; color: var(--primary); margin: 0 auto 24px; box-shadow: var(--shadow-md); position: relative; z-index: 1; }
.step-title { font-size: 17px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.step-desc { font-size: 14px; color: var(--muted); line-height: 1.7; padding: 0 8px; }

/* ===== FAQ ===== */
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item { background: var(--white); border: 1px solid var(--line-light); border-radius: var(--r-md); margin-bottom: 14px; transition: var(--transition); overflow: hidden; }
.faq-item.open { box-shadow: var(--shadow-md); border-color: transparent; }
.faq-question { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 22px 28px; cursor: pointer; font-size: 16px; font-weight: 600; color: var(--primary); }
.faq-icon { width: 28px; height: 28px; border-radius: 50%; background: rgba(13,43,82,0.06); display: flex; align-items: center; justify-content: center; font-size: 16px; color: var(--accent); transition: var(--transition); flex-shrink: 0; }
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--accent); color: var(--white); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-answer-inner { padding: 0 28px 24px; font-size: 15px; color: var(--muted); line-height: 1.8; border-top: 1px solid var(--line-light); padding-top: 16px; }

/* ===== CTA ===== */
.cta-band { background: var(--gradient-hero), url('/assets/images/backpic/back-3.png') center/cover no-repeat; padding: 90px 0; text-align: center; color: var(--white); }
.cta-title { font-size: clamp(28px, 4vw, 38px); font-weight: 800; margin-bottom: 16px; }
.cta-desc { font-size: 17px; color: rgba(255,255,255,0.8); max-width: 600px; margin: 0 auto 36px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== Footer ===== */
.site-footer { background: var(--dark); color: rgba(255,255,255,0.7); padding: 70px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 50px; }
.footer-brand .brand { color: var(--white); margin-bottom: 16px; }
.footer-brand .brand-logo { background: rgba(255,255,255,0.1); color: var(--accent); }
.footer-about { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.55); }
.footer-title { font-size: 15px; font-weight: 700; color: var(--white); margin-bottom: 20px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; color: rgba(255,255,255,0.55); transition: var(--transition); }
.footer-links a:hover { color: var(--accent-2); padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 24px 0; display: flex; align-items: center; justify-content: space-between; font-size: 13px; color: rgba(255,255,255,0.4); flex-wrap: wrap; gap: 10px; }
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { color: rgba(255,255,255,0.4); }
.footer-bottom-links a:hover { color: var(--accent-2); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .process-grid { grid-template-columns: repeat(2, 1fr); gap: 36px 20px; }
    .process-grid::before { display: none; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 36px 20px; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 768px) {
    .section { padding: 60px 0; }
    .menu-toggle { display: flex; }
    .main-nav { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; margin: 0; padding: 12px; background: var(--white); border-radius: 0 0 16px 16px; box-shadow: var(--shadow-lg); }
    .main-nav.nav-open { display: flex; }
    .nav-item { padding: 14px 20px; text-align: center; }
    .header-main { flex-wrap: wrap; }
    .header-actions .btn-sm { display: none; }
    .hero { padding: 80px 0 60px; }
    .hero-title { font-size: 30px; }
    .hero-actions .btn { width: 100%; }
    .categories-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .brand { font-size: 16px; }
    .brand-logo { width: 32px; height: 32px; font-size: 15px; }
    .features-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; }
    .process-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .hero-stats { grid-template-columns: 1fr; }
    .section-title { font-size: 26px; }
    .cta-actions .btn { width: 100%; }
}

/* focus states */
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
input:focus-visible, textarea:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
    :root {
        --primary: #1a56db;
        --primary-dark: #0e3fa8;
        --primary-light: #ebf0ff;
        --secondary: #06b6d4;
        --accent: #f59e0b;
        --bg: #f8fafc;
        --bg-deep: #0f172a;
        --surface: #ffffff;
        --text: #1e293b;
        --text-light: #64748b;
        --text-lighter: #94a3b8;
        --border: #e2e8f0;
        --border-light: #f1f5f9;
        --radius-lg: 20px;
        --radius-md: 14px;
        --radius-sm: 10px;
        --shadow-lg: 0 20px 50px -12px rgba(26, 86, 219, 0.15);
        --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
        --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.04);
        --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --container: 1200px;
        --space-section: 100px;
        --space-section-md: 70px;
        --space-section-sm: 50px;
    }

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

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

    body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        font-size: 16px;
        line-height: 1.7;
        color: var(--text);
        background: var(--bg);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

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

    a {
        color: inherit;
        text-decoration: none;
        transition: var(--transition);
    }

    ul,
    ol {
        list-style: none;
    }

    button,
    input,
    select,
    textarea {
        font: inherit;
        color: inherit;
        border: none;
        outline: none;
        background: none;
    }

    button {
        cursor: pointer;
    }

    :focus-visible {
        outline: 3px solid rgba(26, 86, 219, 0.4);
        outline-offset: 2px;
    }

    ::selection {
        background: var(--primary);
        color: #fff;
    }

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

    /* ===== Header / Nav ===== */
    .site-header {
        background: rgba(255, 255, 255, 0.92);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border-light);
        position: sticky;
        top: 0;
        z-index: 1000;
        box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
    }

    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 72px;
        gap: 24px;
    }

    .brand {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }

    .brand-logo {
        width: 42px;
        height: 42px;
        border-radius: 12px;
        background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        font-weight: 800;
        color: #fff;
        box-shadow: 0 4px 12px rgba(26, 86, 219, 0.3);
        flex-shrink: 0;
    }

    .brand-text {
        font-size: 18px;
        font-weight: 800;
        color: var(--text);
        letter-spacing: 0.5px;
        white-space: nowrap;
    }

    .brand-text span {
        color: var(--primary);
    }

    .main-nav {
        display: flex;
        align-items: center;
        gap: 8px;
        background: var(--border-light);
        padding: 4px;
        border-radius: 14px;
        overflow-x: auto;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    .main-nav::-webkit-scrollbar {
        display: none;
    }

    .main-nav .nav-item {
        padding: 8px 22px;
        border-radius: 11px;
        font-size: 14px;
        font-weight: 600;
        color: var(--text-light);
        white-space: nowrap;
        transition: var(--transition);
    }

    .main-nav .nav-item:hover {
        color: var(--primary);
        background: rgba(255, 255, 255, 0.7);
    }

    .main-nav .nav-item.active {
        background: var(--surface);
        color: var(--primary);
        box-shadow: var(--shadow-sm);
    }

    .header-cta {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .header-search {
        position: relative;
        display: flex;
        align-items: center;
    }

    .header-search input {
        width: 180px;
        height: 40px;
        border-radius: 12px;
        border: 1px solid var(--border);
        background: var(--bg);
        padding: 0 36px 0 16px;
        font-size: 13px;
        transition: var(--transition);
    }

    .header-search input:focus {
        border-color: var(--primary);
        background: var(--surface);
        box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
        width: 220px;
    }

    .header-search i {
        position: absolute;
        right: 14px;
        font-size: 14px;
        color: var(--text-lighter);
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 10px 24px;
        border-radius: 12px;
        font-size: 14px;
        font-weight: 600;
        transition: var(--transition);
        white-space: nowrap;
    }

    .btn-primary {
        background: var(--primary);
        color: #fff;
        box-shadow: 0 4px 12px rgba(26, 86, 219, 0.25);
    }

    .btn-primary:hover {
        background: var(--primary-dark);
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(26, 86, 219, 0.3);
    }

    .btn-outline {
        border: 1px solid var(--border);
        color: var(--text);
        background: var(--surface);
    }

    .btn-outline:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: var(--primary-light);
        transform: translateY(-2px);
    }

    .btn-light {
        background: #fff;
        color: var(--primary);
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    }

    .btn-light:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    }

    .btn-accent {
        background: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
        color: #fff;
        box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
    }

    .btn-accent:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 22px rgba(245, 158, 11, 0.38);
        filter: brightness(1.05);
    }

    .mobile-toggle {
        display: none;
        width: 42px;
        height: 42px;
        border-radius: 10px;
        background: var(--border-light);
        color: var(--text);
        align-items: center;
        justify-content: center;
        font-size: 18px;
        cursor: pointer;
        transition: var(--transition);
    }

    .mobile-toggle:hover {
        background: var(--primary-light);
        color: var(--primary);
    }

    /* ===== Page Hero / Banner ===== */
    .page-hero {
        position: relative;
        padding: 100px 0 90px;
        background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 60%, #0e3fa8 100%);
        color: #fff;
        overflow: hidden;
    }

    .page-hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-1.png');
        background-size: cover;
        background-position: center;
        opacity: 0.2;
    }

    .page-hero::after {
        content: '';
        position: absolute;
        top: -50%;
        right: -20%;
        width: 600px;
        height: 600px;
        border-radius: 50%;
        background: radial-gradient(circle, rgba(6, 182, 212, 0.25) 0%, transparent 65%);
        pointer-events: none;
    }

    .page-hero .container {
        position: relative;
        z-index: 2;
    }

    .page-hero-inner {
        max-width: 720px;
    }

    .page-hero .page-tag {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(255, 255, 255, 0.12);
        backdrop-filter: blur(8px);
        border: 1px solid rgba(255, 255, 255, 0.2);
        padding: 6px 16px;
        border-radius: 100px;
        font-size: 13px;
        font-weight: 600;
        letter-spacing: 0.5px;
        margin-bottom: 28px;
    }

    .page-hero h1 {
        font-size: 46px;
        font-weight: 800;
        line-height: 1.25;
        margin-bottom: 20px;
        letter-spacing: 1px;
    }

    .page-hero h1 .gradient-text {
        background: linear-gradient(135deg, #ffffff 0%, #a5c8ff 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

    .page-hero p {
        font-size: 17px;
        line-height: 1.8;
        color: rgba(255, 255, 255, 0.85);
        max-width: 600px;
        margin-bottom: 36px;
    }

    .page-hero-actions {
        display: flex;
        gap: 14px;
        flex-wrap: wrap;
    }

    .hero-stats {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
        margin-top: 60px;
        padding-top: 40px;
        border-top: 1px solid rgba(255, 255, 255, 0.12);
    }

    .hero-stat {
        text-align: center;
    }

    .hero-stat .stat-num {
        font-size: 34px;
        font-weight: 800;
        color: #fff;
        line-height: 1.2;
    }

    .hero-stat .stat-num span {
        color: #06b6d4;
    }

    .hero-stat .stat-label {
        font-size: 13px;
        color: rgba(255, 255, 255, 0.6);
        margin-top: 4px;
    }

    /* ===== Breadcrumb ===== */
    .breadcrumb {
        padding: 18px 0;
        background: var(--surface);
        border-bottom: 1px solid var(--border-light);
    }

    .breadcrumb-inner {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--text-lighter);
    }

    .breadcrumb-inner a {
        color: var(--text-light);
    }

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

    .breadcrumb-inner i {
        font-size: 10px;
        color: var(--text-lighter);
    }

    .breadcrumb-inner .current {
        color: var(--text);
        font-weight: 600;
    }

    /* ===== Section General ===== */
    .section {
        padding: var(--space-section) 0;
    }

    .section-alt {
        background: var(--surface);
        border-top: 1px solid var(--border-light);
        border-bottom: 1px solid var(--border-light);
    }

    .section-deep {
        background: var(--bg-deep);
        color: #fff;
    }

    .section-head {
        text-align: center;
        max-width: 700px;
        margin: 0 auto 60px;
    }

    .section-tag {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        font-weight: 700;
        color: var(--primary);
        background: var(--primary-light);
        padding: 6px 18px;
        border-radius: 100px;
        letter-spacing: 0.5px;
        margin-bottom: 16px;
    }

    .section-head h2 {
        font-size: 36px;
        font-weight: 800;
        line-height: 1.3;
        margin-bottom: 16px;
    }

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

    .section-head.light h2 {
        color: #fff;
    }

    .section-head.light p {
        color: rgba(255, 255, 255, 0.7);
    }

    /* ===== Feature Cards ===== */
    .feature-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }

    .feature-card {
        background: var(--surface);
        border-radius: var(--radius-lg);
        padding: 36px 30px;
        border: 1px solid var(--border-light);
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
        position: relative;
        overflow: hidden;
    }

    .feature-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: linear-gradient(90deg, var(--primary), var(--secondary));
        transform: scaleX(0);
        transform-origin: left;
        transition: transform 0.4s ease;
    }

    .feature-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-lg);
        border-color: transparent;
    }

    .feature-card:hover::before {
        transform: scaleX(1);
    }

    .feature-icon {
        width: 56px;
        height: 56px;
        border-radius: 16px;
        background: var(--primary-light);
        color: var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 22px;
        margin-bottom: 22px;
        transition: var(--transition);
    }

    .feature-card:hover .feature-icon {
        background: var(--primary);
        color: #fff;
        transform: scale(1.05);
    }

    .feature-card h3 {
        font-size: 19px;
        font-weight: 700;
        margin-bottom: 10px;
        color: var(--text);
    }

    .feature-card p {
        font-size: 14px;
        color: var(--text-light);
        line-height: 1.7;
    }

    /* ===== Step / Flow Section ===== */
    .flow-section {
        position: relative;
        background: linear-gradient(135deg, #f0f4ff 0%, #f8fafc 100%);
    }

    .flow-steps {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 0;
        position: relative;
    }

    .flow-steps::before {
        content: '';
        position: absolute;
        top: 36px;
        left: 12%;
        right: 12%;
        height: 2px;
        background: linear-gradient(90deg, var(--primary), var(--secondary));
        z-index: 1;
    }

    .flow-step {
        text-align: center;
        padding: 0 20px;
        position: relative;
        z-index: 2;
        transition: var(--transition);
    }

    .flow-step:hover {
        transform: translateY(-4px);
    }

    .step-number {
        width: 72px;
        height: 72px;
        margin: 0 auto 20px;
        border-radius: 50%;
        background: var(--surface);
        border: 3px solid var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 24px;
        font-weight: 800;
        color: var(--primary);
        box-shadow: 0 8px 20px rgba(26, 86, 219, 0.15);
        position: relative;
        transition: var(--transition);
    }

    .flow-step:hover .step-number {
        background: var(--primary);
        color: #fff;
    }

    .step-number .step-icon {
        font-size: 13px;
        position: absolute;
        bottom: -6px;
        right: -6px;
        width: 26px;
        height: 26px;
        border-radius: 50%;
        background: var(--secondary);
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 10px;
        border: 2px solid #fff;
    }

    .flow-step h3 {
        font-size: 17px;
        font-weight: 700;
        margin-bottom: 8px;
    }

    .flow-step p {
        font-size: 13px;
        color: var(--text-light);
        line-height: 1.6;
    }

    /* ===== Article Cards ===== */
    .article-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
    }

    .article-card {
        background: var(--surface);
        border-radius: var(--radius-lg);
        overflow: hidden;
        border: 1px solid var(--border-light);
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
    }

    .article-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-lg);
    }

    .article-card .article-img {
        position: relative;
        height: 220px;
        overflow: hidden;
    }

    .article-card .article-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.6s ease;
    }

    .article-card:hover .article-img img {
        transform: scale(1.06);
    }

    .article-img .article-badge {
        position: absolute;
        top: 16px;
        left: 16px;
        padding: 4px 14px;
        border-radius: 100px;
        background: var(--primary);
        color: #fff;
        font-size: 12px;
        font-weight: 600;
        box-shadow: 0 4px 12px rgba(26, 86, 219, 0.3);
    }

    .article-card .article-body {
        padding: 26px 28px;
    }

    .article-card .article-meta {
        display: flex;
        align-items: center;
        gap: 16px;
        margin-bottom: 12px;
        font-size: 13px;
        color: var(--text-lighter);
    }

    .article-card .article-meta i {
        font-size: 12px;
        margin-right: 4px;
    }

    .article-card h3 {
        font-size: 19px;
        font-weight: 700;
        margin-bottom: 12px;
        line-height: 1.5;
    }

    .article-card h3 a {
        color: var(--text);
    }

    .article-card h3 a:hover {
        color: var(--primary);
    }

    .article-card .article-excerpt {
        font-size: 14px;
        color: var(--text-light);
        line-height: 1.7;
        margin-bottom: 18px;
    }

    .article-card .article-footer {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding-top: 14px;
        border-top: 1px solid var(--border-light);
    }

    .article-card .read-more {
        font-size: 14px;
        font-weight: 600;
        color: var(--primary);
    }

    .article-card .read-more i {
        font-size: 12px;
        margin-left: 4px;
        transition: var(--transition);
    }

    .article-card .read-more:hover i {
        transform: translateX(4px);
    }

    /* ===== Tool Card / Guide List ===== */
    .guide-layout {
        display: grid;
        grid-template-columns: 1.2fr 0.8fr;
        gap: 40px;
        align-items: center;
    }

    .guide-img {
        border-radius: var(--radius-lg);
        overflow: hidden;
        box-shadow: var(--shadow-lg);
        position: relative;
    }

    .guide-img img {
        width: 100%;
        height: 480px;
        object-fit: cover;
        transition: transform 0.8s ease;
    }

    .guide-img:hover img {
        transform: scale(1.03);
    }

    .guide-img::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, transparent 60%, rgba(15, 23, 42, 0.4) 100%);
    }

    .guide-content {
        padding: 20px 0;
    }

    .guide-content .section-tag {
        margin-bottom: 12px;
    }

    .guide-content h2 {
        font-size: 32px;
        font-weight: 800;
        margin-bottom: 18px;
        line-height: 1.3;
    }

    .guide-content p {
        font-size: 15px;
        color: var(--text-light);
        line-height: 1.8;
        margin-bottom: 24px;
    }

    .guide-list {
        margin-bottom: 28px;
    }

    .guide-list li {
        display: flex;
        align-items: flex-start;
        gap: 12px;
        padding: 10px 0;
        border-bottom: 1px dashed var(--border);
        font-size: 14px;
        color: var(--text);
    }

    .guide-list li:last-child {
        border-bottom: none;
    }

    .guide-list li i {
        color: var(--primary);
        margin-top: 4px;
        font-size: 13px;
        flex-shrink: 0;
    }

    /* ===== Data / Stats ===== */
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }

    .stat-card {
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: var(--radius-lg);
        padding: 36px 24px;
        text-align: center;
        transition: var(--transition);
        backdrop-filter: blur(8px);
    }

    .stat-card:hover {
        background: rgba(255, 255, 255, 0.1);
        transform: translateY(-4px);
        border-color: rgba(255, 255, 255, 0.2);
    }

    .stat-card .stat-value {
        font-size: 40px;
        font-weight: 800;
        color: transparent;
        background: linear-gradient(135deg, #06b6d4 0%, #60a5fa 100%);
        -webkit-background-clip: text;
        background-clip: text;
        margin-bottom: 6px;
        line-height: 1.3;
    }

    .stat-card .stat-value span {
        font-size: 24px;
        margin-right: 2px;
    }

    .stat-card .stat-name {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.7);
    }

    /* ===== FAQ ===== */
    .faq-list {
        max-width: 850px;
        margin: 0 auto;
    }

    .faq-item {
        background: var(--surface);
        border-radius: var(--radius-md);
        border: 1px solid var(--border-light);
        margin-bottom: 14px;
        overflow: hidden;
        transition: var(--transition);
    }

    .faq-item:hover {
        border-color: rgba(26, 86, 219, 0.2);
        box-shadow: var(--shadow-sm);
    }

    .faq-item.open {
        border-color: rgba(26, 86, 219, 0.3);
        box-shadow: var(--shadow-md);
    }

    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding: 20px 24px;
        cursor: pointer;
        font-size: 15px;
        font-weight: 600;
        color: var(--text);
        transition: var(--transition);
        background: none;
        width: 100%;
        text-align: left;
    }

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

    .faq-icon {
        width: 30px;
        height: 30px;
        border-radius: 50%;
        background: var(--primary-light);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 13px;
        color: var(--primary);
        flex-shrink: 0;
        transition: var(--transition);
    }

    .faq-item.open .faq-icon {
        background: var(--primary);
        color: #fff;
        transform: rotate(45deg);
    }

    .faq-answer {
        display: none;
        padding: 0 24px 24px;
        font-size: 14px;
        color: var(--text-light);
        line-height: 1.8;
        border-top: 1px solid var(--border-light);
        margin-top: 0;
        padding-top: 20px;
    }

    .faq-answer p {
        margin-bottom: 10px;
    }

    .faq-answer p:last-child {
        margin-bottom: 0;
    }

    /* ===== CTA ===== */
    .cta-section {
        position: relative;
        padding: 80px 0;
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        color: #fff;
        text-align: center;
        overflow: hidden;
    }

    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-2.png');
        background-size: cover;
        background-position: center;
        opacity: 0.12;
    }

    .cta-section .container {
        position: relative;
        z-index: 2;
    }

    .cta-section h2 {
        font-size: 32px;
        font-weight: 800;
        margin-bottom: 14px;
    }

    .cta-section p {
        font-size: 16px;
        color: rgba(255, 255, 255, 0.8);
        margin-bottom: 32px;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }

    .cta-buttons {
        display: flex;
        gap: 14px;
        justify-content: center;
        flex-wrap: wrap;
    }

    /* ===== Footer ===== */
    .site-footer {
        background: #0f172a;
        color: #94a3b8;
        padding-top: 70px;
        font-size: 14px;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.5fr 1fr 1fr 1fr;
        gap: 40px;
        padding-bottom: 50px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .footer-brand .brand {
        margin-bottom: 18px;
    }

    .footer-brand .brand .brand-text {
        color: #fff;
        font-size: 20px;
    }

    .footer-brand .brand .brand-text span {
        color: #06b6d4;
    }

    .footer-about {
        line-height: 1.8;
        margin-bottom: 20px;
        max-width: 280px;
    }

    .footer-title {
        font-size: 15px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 20px;
        letter-spacing: 0.5px;
    }

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

    .footer-links a {
        color: #94a3b8;
        transition: var(--transition);
        font-size: 14px;
    }

    .footer-links a:hover {
        color: #06b6d4;
        padding-left: 4px;
    }

    .footer-bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 24px 0;
        font-size: 13px;
        color: #64748b;
        flex-wrap: wrap;
        gap: 12px;
    }

    .footer-bottom-links {
        display: flex;
        gap: 20px;
    }

    .footer-bottom-links a {
        color: #64748b;
        transition: var(--transition);
    }

    .footer-bottom-links a:hover {
        color: #06b6d4;
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        :root {
            --space-section: 80px;
        }

        .hero-stats {
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .flow-steps {
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
        }

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

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

        .guide-layout {
            grid-template-columns: 1fr;
        }

        .guide-img img {
            height: 360px;
        }

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

        .footer-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
        }

        .header-search input {
            width: 140px;
        }

        .header-search input:focus {
            width: 160px;
        }
    }

    @media (max-width: 768px) {
        :root {
            --space-section: 60px;
        }

        .site-header {
            position: sticky;
        }

        .header-inner {
            height: 64px;
        }

        .brand-text {
            font-size: 16px;
        }

        .main-nav {
            display: none;
            position: absolute;
            top: 64px;
            left: 0;
            right: 0;
            background: var(--surface);
            flex-direction: column;
            padding: 16px;
            border-radius: 0;
            box-shadow: 0 20px 30px rgba(0, 0, 0, 0.1);
            border-bottom: 1px solid var(--border-light);
            align-items: stretch;
            overflow-x: visible;
        }

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

        .main-nav .nav-item {
            padding: 14px 16px;
            border-radius: 10px;
        }

        .mobile-toggle {
            display: flex;
        }

        .header-search {
            display: none;
        }

        .header-cta .btn-header {
            display: none;
        }

        .page-hero {
            padding: 70px 0 60px;
        }

        .page-hero h1 {
            font-size: 32px;
        }

        .page-hero p {
            font-size: 15px;
        }

        .section-head h2 {
            font-size: 28px;
        }

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

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

        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        .stat-card {
            padding: 24px 16px;
        }

        .stat-card .stat-value {
            font-size: 30px;
        }

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

        .footer-bottom {
            flex-direction: column;
            text-align: center;
        }
    }

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

        .page-hero h1 {
            font-size: 26px;
        }

        .page-hero-actions {
            flex-direction: column;
        }

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

        .hero-stats {
            grid-template-columns: 1fr;
            gap: 20px;
        }

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

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

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

        .guide-content h2 {
            font-size: 24px;
        }

        .cta-section h2 {
            font-size: 24px;
        }

        .cta-buttons {
            flex-direction: column;
        }

        .cta-buttons .btn {
            width: 100%;
        }

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

        .faq-question {
            font-size: 14px;
            padding: 16px 18px;
        }
    }

/* roulang page: article */
:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #eff6ff;
    --primary-gradient: linear-gradient(135deg, #2563eb 0%, #0ea5e9 100%);
    --accent: #0ea5e9;
    --accent-light: #e0f2fe;
    --dark-bg: #0f172a;
    --dark-bg-2: #1e293b;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --bg-muted: #f1f5f9;
    --text: #0f172a;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    --border: #e2e8f0;
    --border-dark: #cbd5e1;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
    --shadow: 0 4px 16px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    --container: 1200px;
    --space-1: 8px;
    --space-2: 16px;
    --space-3: 24px;
    --space-4: 32px;
    --space-5: 48px;
    --space-6: 64px;
    --space-7: 96px;
}
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}
a {
    color: inherit;
    text-decoration: none;
    transition: color 0.25s ease;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}
input {
    font-family: inherit;
}
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}
.section {
    padding: var(--space-6) 0;
}
.section-alt {
    background: var(--bg-alt);
}
.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto var(--space-5);
}
.section-header h2 {
    font-size: 32px;
    line-height: 1.3;
    font-weight: 700;
    letter-spacing: -0.01em;
}
.section-header p {
    margin-top: var(--space-2);
    color: var(--text-muted);
    font-size: 16px;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    border-radius: 999px;
    transition: all 0.25s ease;
    border: 1px solid transparent;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.28);
}
.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: 0 6px 18px rgba(37, 99, 235, 0.35);
    transform: translateY(-2px);
}
.btn-outline {
    border: 1px solid var(--border-dark);
    color: var(--text);
    background: #fff;
}
.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}
.btn-light {
    background: #fff;
    color: var(--primary);
}
.btn-light:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
}
.btn-ghost {
    border: 1px solid rgba(255,255,255,0.5);
    color: #fff;
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(4px);
}
.btn-ghost:hover {
    background: rgba(255,255,255,0.16);
    transform: translateY(-2px);
}
.btn-sm {
    padding: 8px 18px;
    font-size: 13px;
}
.btn-block {
    width: 100%;
}
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    height: 72px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    white-space: nowrap;
}
.brand-logo {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    background: var(--bg-muted);
    padding: 5px;
    border-radius: 999px;
    border: 1px solid var(--border);
}
.nav-item {
    display: inline-flex;
    align-items: center;
    padding: 8px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    border-radius: 999px;
    white-space: nowrap;
    transition: all 0.25s ease;
}
.nav-item:hover {
    color: var(--primary);
    background: var(--primary-light);
}
.nav-item.active {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}
.header-cta {
    flex-shrink: 0;
}
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: var(--bg-muted);
}
.nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    border-radius: 2px;
    background: var(--text);
    transition: all 0.3s ease;
}
.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}
.article-hero {
    padding: 72px 0 64px;
    background-size: cover;
    background-position: center;
    color: #fff;
    position: relative;
}
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 24px;
}
.breadcrumb a {
    color: rgba(255,255,255,0.7);
}
.breadcrumb a:hover {
    color: #fff;
}
.breadcrumb-sep {
    color: rgba(255,255,255,0.4);
}
.hero-badge {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    background: rgba(255,255,255,0.16);
    border: 1px solid rgba(255,255,255,0.25);
    padding: 4px 14px;
    border-radius: 999px;
    margin-bottom: 16px;
    backdrop-filter: blur(4px);
}
.hero-title {
    font-size: 42px;
    line-height: 1.25;
    font-weight: 800;
    max-width: 860px;
    letter-spacing: -0.02em;
}
.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 16px;
    font-size: 14px;
    color: rgba(255,255,255,0.8);
}
.hero-desc {
    margin-top: 16px;
    font-size: 16px;
    line-height: 1.7;
    color: rgba(255,255,255,0.75);
    max-width: 720px;
}
.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: var(--space-5);
    align-items: start;
}
.article-main {
    min-width: 0;
}
.article-content {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px 44px;
    font-size: 16px;
    line-height: 1.85;
    color: var(--text);
    word-wrap: break-word;
}
.article-content > * + * {
    margin-top: 18px;
}
.article-content h2 {
    font-size: 26px;
    font-weight: 700;
    margin-top: 40px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
    position: relative;
    line-height: 1.4;
}
.article-content h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: -1px;
    width: 48px;
    height: 4px;
    background: var(--primary);
    border-radius: 0 0 4px 4px;
}
.article-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin-top: 32px;
    line-height: 1.4;
}
.article-content p {
    color: var(--text);
}
.article-content ul,
.article-content ol {
    padding-left: 24px;
}
.article-content li {
    margin-top: 8px;
}
.article-content img {
    border-radius: var(--radius);
    max-width: 100%;
}
.article-content a {
    color: var(--primary);
    border-bottom: 1px solid transparent;
}
.article-content a:hover {
    border-bottom-color: var(--primary);
}
.article-content blockquote {
    border-left: 4px solid var(--accent);
    background: var(--bg-alt);
    padding: 16px 24px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-muted);
}
.article-sidebar {
    position: sticky;
    top: 90px;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}
.sidebar-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}
.sidebar-title {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
    position: relative;
    padding-left: 12px;
    color: var(--text);
}
.sidebar-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 4px;
    background: var(--primary);
    border-radius: 4px;
}
.sidebar-meta-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.sidebar-meta-list li {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
}
.meta-label {
    color: var(--text-muted);
}
.meta-value {
    font-weight: 500;
    color: var(--text);
}
.sidebar-img {
    width: 100%;
    border-radius: var(--radius-sm);
    margin-bottom: 14px;
}
.sidebar-card p {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 14px;
}
.sidebar-cta {
    background: var(--primary-gradient);
    color: #fff;
    border: none;
}
.sidebar-cta .sidebar-title {
    color: #fff;
}
.sidebar-cta .sidebar-title::before {
    background: #fff;
}
.sidebar-cta p {
    color: rgba(255,255,255,0.85);
}
.sidebar-cta .btn {
    background: #fff;
    color: var(--primary);
}
.sidebar-cta .btn:hover {
    background: var(--primary-light);
}
.badge {
    display: inline-block;
    padding: 3px 12px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 999px;
    background: var(--primary-light);
    color: var(--primary);
}
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
}
.post-card {
    display: block;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.3s ease;
}
.post-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-dark);
}
.post-card-thumb {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--bg-muted);
}
.post-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.post-card:hover .post-card-thumb img {
    transform: scale(1.05);
}
.post-card-body {
    padding: 20px 22px 24px;
}
.post-card-body .badge {
    margin-bottom: 12px;
}
.post-card-body h3 {
    font-size: 17px;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: var(--text);
}
.post-card-body p {
    font-size: 14px;
    color: var(--text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 14px;
}
.post-card-meta {
    font-size: 13px;
    color: var(--text-light);
}
.cta-section {
    padding: var(--space-7) 0;
    background-size: cover;
    background-position: center;
    text-align: center;
    color: #fff;
}
.cta-section h2 {
    font-size: 34px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}
.cta-section p {
    font-size: 17px;
    color: rgba(255,255,255,0.8);
    max-width: 600px;
    margin: 0 auto var(--space-4);
}
.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.empty-state {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 64px 48px;
    text-align: center;
}
.empty-state h2 {
    font-size: 28px;
    margin-bottom: 16px;
}
.empty-state p {
    color: var(--text-muted);
    margin-bottom: 28px;
}
.site-footer {
    background: var(--dark-bg);
    color: #94a3b8;
    padding: var(--space-6) 0 var(--space-4);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-5);
    padding-bottom: var(--space-5);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .brand {
    color: #fff;
    font-size: 20px;
    margin-bottom: 14px;
}
.footer-brand .brand-logo {
    width: 38px;
    height: 38px;
    font-size: 19px;
}
.footer-about {
    font-size: 14px;
    line-height: 1.7;
    margin-top: 14px;
    color: #94a3b8;
}
.footer-title {
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 18px;
}
.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 14px;
}
.footer-links a {
    color: #94a3b8;
}
.footer-links a:hover {
    color: #fff;
}
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    padding-top: var(--space-4);
    font-size: 13px;
}
.footer-bottom-links {
    display: flex;
    gap: 20px;
}
.footer-bottom-links a {
    color: #94a3b8;
}
.footer-bottom-links a:hover {
    color: #fff;
}
@media (max-width: 1024px) {
    .article-layout {
        grid-template-columns: 1fr;
    }
    .article-sidebar {
        position: static;
        display: grid;
        grid-template-columns: repeat(3, 1fr);
    }
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 768px) {
    .header-inner {
        height: 64px;
    }
    .header-cta {
        display: none;
    }
    .main-nav {
        display: none;
        position: absolute;
        top: 64px;
        left: 16px;
        right: 16px;
        background: #fff;
        border-radius: var(--radius);
        flex-direction: column;
        padding: 12px;
        box-shadow: var(--shadow-lg);
        border: 1px solid var(--border);
    }
    .main-nav.open {
        display: flex;
    }
    .nav-toggle {
        display: flex;
    }
    .article-hero {
        padding: 48px 0 40px;
    }
    .hero-title {
        font-size: 28px;
    }
    .hero-desc {
        font-size: 15px;
    }
    .article-content {
        padding: 24px 20px;
    }
    .section {
        padding: var(--space-4) 0;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .cta-section {
        padding: var(--space-5) 0;
    }
    .cta-section h2 {
        font-size: 28px;
    }
}
@media (max-width: 520px) {
    .container {
        padding: 0 16px;
    }
    .brand {
        font-size: 16px;
    }
    .brand-logo {
        width: 32px;
        height: 32px;
        font-size: 15px;
    }
    .card-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }
    .article-sidebar {
        grid-template-columns: 1fr;
    }
    .cta-actions {
        flex-direction: column;
        align-items: stretch;
    }
    .hero-title {
        font-size: 24px;
    }
    .article-content {
        padding: 20px 16px;
        border-radius: var(--radius);
    }
    .section-header h2 {
        font-size: 24px;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* roulang page: category2 */
:root {
  --primary: #0b57d0;
  --primary-dark: #0847a6;
  --primary-light: #e1edff;
  --accent: #f0b429;
  --dark: #0b1b2b;
  --bg: #ffffff;
  --bg-alt: #f3f7fd;
  --text: #16243a;
  --text-soft: #5e6e82;
  --border: #e4eaf1;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 30px rgba(11, 87, 208, 0.08);
  --shadow-lg: 0 18px 50px rgba(11, 87, 208, 0.14);
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

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

button,
input {
  font-family: inherit;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-sm {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Button ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 40px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}

.btn i {
  font-size: 13px;
  transition: transform 0.3s ease;
}

.btn:hover i {
  transform: translateX(4px);
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 6px 18px rgba(11, 87, 208, 0.25);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(11, 87, 208, 0.32);
}

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

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

.btn-ghost:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

.btn-light {
  background: #ffffff;
  color: var(--primary);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
}

.btn-light:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.18);
}

.btn-outline-light {
  background: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.7);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 14px;
}

/* ===== Badge / Tag ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 40px;
  font-size: 12px;
  font-weight: 600;
  background: var(--primary-light);
  color: var(--primary);
  letter-spacing: 0.3px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 40px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.4px;
  margin-bottom: 18px;
}

.section-tag.light {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 14px;
  padding-bottom: 14px;
}

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

.brand-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(145deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #ffffff;
  font-size: 20px;
  font-weight: 800;
  box-shadow: 0 6px 16px rgba(11, 87, 208, 0.3);
  transition: var(--transition);
}

.brand:hover .brand-logo {
  transform: scale(1.04) rotate(-3deg);
}

.brand-text {
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.5px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-alt);
  padding: 5px;
  border-radius: 44px;
  border: 1px solid var(--border);
}

.nav-item {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  border-radius: 36px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-soft);
  transition: var(--transition);
}

.nav-item:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.nav-item.active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(11, 87, 208, 0.3);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
  transition: var(--transition);
}

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

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: 120px 0 100px;
  background: linear-gradient(135deg, rgba(6, 26, 48, 0.92) 0%, rgba(16, 52, 96, 0.88) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #ffffff;
  overflow: hidden;
}

.page-hero::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -120px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(240, 180, 41, 0.2) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  max-width: 760px;
  position: relative;
  z-index: 1;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border-radius: 40px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.24);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  backdrop-filter: blur(6px);
}

.page-hero h1 {
  margin: 22px 0 18px;
  font-size: 52px;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: 1px;
}

.page-hero p {
  font-size: 17px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.82);
  max-width: 640px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 34px;
  flex-wrap: wrap;
}

/* ===== Section Common ===== */
.section {
  padding: 100px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px;
}

.section-head h2 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 14px;
}

.section-head p {
  color: var(--text-soft);
  font-size: 16px;
  line-height: 1.8;
}

/* ===== Stats ===== */
.stats-section {
  padding: 0;
  background: var(--bg);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: -80px;
  position: relative;
  z-index: 2;
}

.stat-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.stat-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  border-radius: 16px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

.stat-number {
  font-size: 40px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
  margin-bottom: 6px;
}

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

/* ===== Timeline ===== */
.timeline-wrap {
  background: var(--bg);
}

.timeline-section {
  padding: 100px 0;
}

.timeline-list {
  max-width: 860px;
  margin: 0 auto;
  position: relative;
}

.timeline-list::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary-light), var(--primary), var(--primary-light));
}

.timeline-item {
  position: relative;
  padding: 0 0 42px 76px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-marker {
  position: absolute;
  left: 16px;
  top: 6px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary);
  border: 4px solid var(--primary-light);
  box-shadow: 0 0 0 2px var(--bg);
}

.timeline-content {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  transition: var(--transition);
}

.timeline-content:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}

.timeline-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.timeline-date {
  font-size: 13px;
  color: var(--text-soft);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.timeline-date i {
  font-size: 12px;
  color: var(--primary);
}

.timeline-content h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.75;
}

/* ===== Cards ===== */
.cards-section {
  padding: 100px 0;
  background: var(--bg-alt);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  background: var(--bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.card-cover {
  position: relative;
  height: 210px;
  overflow: hidden;
}

.card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.service-card:hover .card-cover img {
  transform: scale(1.06);
}

.card-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 27, 43, 0.35), transparent 50%);
}

.card-tag {
  position: absolute;
  left: 18px;
  bottom: 16px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.95);
  color: var(--primary);
  padding: 5px 14px;
  border-radius: 32px;
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.card-body {
  padding: 26px;
}

.card-body h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
}

.card-body p {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.8;
  margin-bottom: 18px;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
}

.card-link i {
  font-size: 12px;
  transition: transform 0.3s ease;
}

.card-link:hover {
  color: var(--primary-dark);
}

.card-link:hover i {
  transform: translateX(4px);
}

/* ===== Security Section ===== */
.security-section {
  padding: 100px 0;
  background: linear-gradient(135deg, #0b1b2b 0%, #123252 100%);
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

.security-section::before {
  content: "";
  position: absolute;
  left: -100px;
  bottom: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(11, 87, 208, 0.35), transparent 70%);
  pointer-events: none;
}

.security-wrap {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 70px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.security-text h2 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
}

.security-text > p {
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 28px;
  line-height: 1.8;
}

.security-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.security-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 15px;
  line-height: 1.7;
}

.security-list li i {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
}

.security-list li strong {
  display: block;
  font-weight: 700;
  margin-bottom: 4px;
  color: #ffffff;
}

.security-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.security-image img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 100px 0;
  background: var(--bg);
}

.faq-wrap {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 60px;
  align-items: start;
}

.faq-side h2 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 14px;
}

.faq-side p {
  color: var(--text-soft);
  margin-bottom: 20px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 4px 16px rgba(11, 87, 208, 0.08);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 22px;
  cursor: pointer;
}

.faq-question h3 {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
}

.faq-question i {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--text-soft);
  transition: var(--transition);
}

.faq-item.active .faq-question i {
  background: var(--primary);
  color: #ffffff;
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer p {
  padding: 0 22px 22px;
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.85;
}

/* ===== CTA ===== */
.cta-section {
  padding: 100px 0;
  background: linear-gradient(135deg, #f3f7fd 0%, #e4edf9 100%);
}

.cta-box {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 28px;
  padding: 55px 50px;
  color: #ffffff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(11, 87, 208, 0.3);
}

.cta-box::before {
  content: "";
  position: absolute;
  right: -50px;
  top: -50px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  pointer-events: none;
}

.cta-box::after {
  content: "";
  position: absolute;
  left: -40px;
  bottom: -40px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  pointer-events: none;
}

.cta-box h2 {
  font-size: 31px;
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}

.cta-box p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 30px;
  font-size: 15px;
  position: relative;
  z-index: 1;
}

.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ===== Footer ===== */
.site-footer {
  background: #0b1b2b;
  color: rgba(255, 255, 255, 0.7);
  padding: 70px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .brand {
  margin-bottom: 16px;
  color: #ffffff;
}

.footer-brand .brand-logo {
  background: linear-gradient(145deg, #ffffff 0%, #dbe6f5 100%);
  color: var(--primary);
  box-shadow: none;
}

.footer-about {
  font-size: 14px;
  line-height: 1.9;
  max-width: 320px;
}

.footer-title {
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  transition: var(--transition);
}

.footer-links a:hover {
  color: #ffffff;
  padding-left: 6px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
  flex-wrap: wrap;
}

.footer-bottom-links {
  display: flex;
  gap: 18px;
}

.footer-bottom-links a {
  color: rgba(255, 255, 255, 0.45);
  transition: var(--transition);
}

.footer-bottom-links a:hover {
  color: #ffffff;
}

/* ===== Focus Visibility ===== */
a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(11, 87, 208, 0.4);
  outline-offset: 2px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-actions {
    margin-top: 24px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }

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

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

  .security-image {
    order: -1;
  }

  .security-image img {
    height: 300px;
  }

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

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

  .page-hero h1 {
    font-size: 42px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
  }

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

  .main-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 12px;
    margin-top: 12px;
  }

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

  .nav-item {
    justify-content: center;
    padding: 12px;
  }

  .page-hero {
    padding: 80px 0 70px;
  }

  .page-hero h1 {
    font-size: 34px;
  }

  .section {
    padding: 70px 0;
  }

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

  .section-head h2 {
    font-size: 28px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    margin-top: -50px;
  }

  .stat-number {
    font-size: 32px;
  }

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

  .card-cover {
    height: 180px;
  }

  .cta-box {
    padding: 40px 24px;
  }

  .cta-box h2 {
    font-size: 26px;
  }

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .security-text h2 {
    font-size: 28px;
  }

  .timeline-content {
    padding: 22px;
  }

  .timeline-list::before {
    left: 18px;
  }

  .timeline-marker {
    left: 11px;
  }

  .timeline-item {
    padding-left: 56px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }

  .brand-text {
    font-size: 16px;
  }

  .brand-logo {
    width: 36px;
    height: 36px;
    font-size: 18px;
  }

  .header-actions .btn-sm {
    padding: 7px 14px;
    font-size: 13px;
  }

  .page-hero h1 {
    font-size: 28px;
  }

  .page-hero p {
    font-size: 15px;
  }

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

  .stat-card {
    padding: 26px 20px;
  }

  .stat-number {
    font-size: 36px;
  }

  .cards-grid {
    gap: 18px;
  }

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

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

  .cta-actions .btn {
    width: 100%;
    padding: 12px 18px;
  }
}