/* roulang page: index */
:root {
            --primary: #C2540E;
            --primary-hover: #A8460A;
            --primary-light: #FEF0E4;
            --accent: #F59E0B;
            --accent-light: #FFF7E0;
            --deep: #1C1917;
            --deep-soft: #292524;
            --surface: #FFFFFF;
            --background: #FDF8F4;
            --background-soft: #FAF5F0;
            --text: #292524;
            --text-secondary: #57534E;
            --text-muted: #78716C;
            --border: #E7DED5;
            --border-strong: #D6C9BC;
            --success: #059669;
            --success-light: #ECFDF5;
            --danger: #DC2626;
            --danger-light: #FEF2F2;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 4px rgba(28, 25, 23, 0.06);
            --shadow-md: 0 4px 16px rgba(28, 25, 23, 0.08);
            --shadow-lg: 0 12px 36px rgba(28, 25, 23, 0.12);
            --shadow-hover: 0 16px 48px rgba(28, 25, 23, 0.16);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
            --container-pad: 20px;
            --header-height: 68px;
            --topbar-height: 38px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text);
            background-color: var(--background);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

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

        a:focus-visible {
            outline: 3px solid rgba(194, 84, 14, 0.4);
            outline-offset: 2px;
            border-radius: 4px;
        }

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

        button:focus-visible {
            outline: 3px solid rgba(194, 84, 14, 0.4);
            outline-offset: 2px;
        }

        ul, ol {
            list-style: none;
        }

        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--deep);
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--container-pad);
            padding-right: var(--container-pad);
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ===== Topbar ===== */
        .topbar {
            background-color: var(--deep);
            color: #EDE8E3;
            font-size: 13px;
            height: var(--topbar-height);
            display: flex;
            align-items: center;
            position: relative;
            z-index: 1001;
            overflow: hidden;
        }
        .topbar-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
        }
        .topbar-left {
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .topbar-left i {
            color: var(--accent);
            font-size: 12px;
        }
        .topbar-right {
            display: flex;
            align-items: center;
            gap: 18px;
            white-space: nowrap;
        }
        .topbar-right a {
            color: #D6CEC6;
            font-size: 12px;
            transition: color var(--transition-fast);
        }
        .topbar-right a:hover {
            color: #FFFFFF;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background-color: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 0 rgba(28, 25, 23, 0.04);
        }
        .header-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            height: var(--header-height);
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .header-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--primary) 0%, #E07A1F 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-size: 18px;
            flex-shrink: 0;
            box-shadow: var(--shadow-sm);
        }
        .header-logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--deep);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .header-logo-text span {
            color: var(--primary);
        }
        .header-nav-desktop {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }
        .header-nav-desktop a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
        }
        .header-nav-desktop a:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .header-nav-desktop a.active {
            color: var(--primary);
            background-color: var(--primary-light);
        }
        .header-nav-desktop a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 16px;
            right: 16px;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            align-items: center;
            background-color: var(--background-soft);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 4px 4px 4px 14px;
            transition: all var(--transition-fast);
            min-width: 200px;
        }
        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(194, 84, 14, 0.12);
            background-color: var(--surface);
        }
        .header-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text);
            flex: 1;
            min-width: 0;
            padding: 6px 0;
        }
        .header-search input::placeholder {
            color: var(--text-muted);
        }
        .header-search-btn {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background-color: var(--primary);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            flex-shrink: 0;
            transition: background-color var(--transition-fast);
        }
        .header-search-btn:hover {
            background-color: var(--primary-hover);
        }
        .header-icon-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
        }
        .header-icon-btn:hover {
            background-color: var(--background-soft);
            color: var(--primary);
        }
        .header-icon-btn .badge-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background-color: var(--danger);
            border: 2px solid var(--surface);
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            border-radius: 50px;
            background-color: var(--primary);
            color: #FFFFFF;
            font-size: 13px;
            font-weight: 700;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-sm);
            white-space: nowrap;
        }
        .header-cta:hover {
            background-color: var(--primary-hover);
            color: #FFFFFF;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .header-cta i {
            font-size: 12px;
        }
        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--text);
            background-color: var(--background-soft);
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .hamburger:hover {
            background-color: var(--primary-light);
            color: var(--primary);
        }

        /* Mobile drawer */
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background-color: rgba(28, 25, 23, 0.5);
            z-index: 1098;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-base);
        }
        .drawer-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            max-width: 85vw;
            height: 100vh;
            background-color: var(--surface);
            z-index: 1099;
            transition: right var(--transition-slow);
            box-shadow: var(--shadow-lg);
            display: flex;
            flex-direction: column;
            overflow-y: auto;
        }
        .mobile-drawer.active {
            right: 0;
        }
        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            border-bottom: 1px solid var(--border);
            flex-shrink: 0;
        }
        .drawer-header span {
            font-weight: 700;
            font-size: 16px;
            color: var(--deep);
        }
        .drawer-close {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: var(--background-soft);
            color: var(--text-secondary);
            font-size: 16px;
            transition: all var(--transition-fast);
        }
        .drawer-close:hover {
            background-color: var(--danger-light);
            color: var(--danger);
        }
        .drawer-nav {
            padding: 16px 20px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .drawer-nav a {
            padding: 12px 14px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition-fast);
        }
        .drawer-nav a:hover,
        .drawer-nav a.active {
            background-color: var(--primary-light);
            color: var(--primary);
        }
        .drawer-nav a i {
            font-size: 14px;
            width: 18px;
            text-align: center;
        }
        .drawer-footer {
            padding: 16px 20px 24px;
            border-top: 1px solid var(--border);
            margin-top: auto;
            flex-shrink: 0;
        }
        .drawer-footer .header-cta {
            width: 100%;
            justify-content: center;
            padding: 12px 20px;
            font-size: 15px;
        }

        /* ===== Hero ===== */
        .hero {
            background-color: var(--deep);
            background-image: linear-gradient(rgba(28, 25, 23, 0.75), rgba(28, 25, 23, 0.78)), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 70px 0 84px;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(28,25,23,0.35) 0%, rgba(28,25,23,0.6) 60%, rgba(28,25,23,0.85) 100%);
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero-left {
            max-width: 580px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: rgba(245, 158, 11, 0.15);
            border: 1px solid rgba(245, 158, 11, 0.35);
            color: #FDE68A;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }
        .hero-badge i {
            font-size: 11px;
        }
        .hero h1 {
            font-size: 40px;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 18px;
            letter-spacing: -0.01em;
            line-height: 1.25;
        }
        .hero h1 .highlight-text {
            background: linear-gradient(135deg, #FBBF24 0%, #F59E0B 50%, #FB923C 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-tagline {
            font-size: 17px;
            color: #F5EFE9;
            line-height: 1.7;
            margin-bottom: 16px;
            font-weight: 500;
        }
        .hero-desc {
            font-size: 15px;
            color: #D6CEC6;
            line-height: 1.75;
            margin-bottom: 28px;
            max-width: 520px;
        }
        .hero-desc strong {
            color: #FDE68A;
            font-weight: 600;
        }
        .hero-cta-row {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 28px;
        }
        .btn-primary-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 50px;
            background-color: var(--primary);
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 700;
            box-shadow: 0 4px 16px rgba(194, 84, 14, 0.35);
            transition: all var(--transition-base);
        }
        .btn-primary-lg:hover {
            background-color: var(--primary-hover);
            color: #FFFFFF;
            box-shadow: 0 8px 28px rgba(194, 84, 14, 0.45);
            transform: translateY(-2px);
        }
        .btn-primary-lg i {
            font-size: 14px;
        }
        .btn-outline-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 50px;
            background-color: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.35);
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition-base);
        }
        .btn-outline-lg:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.55);
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 28px;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
        }
        .hero-stat-number {
            font-size: 24px;
            font-weight: 800;
            color: #FDE68A;
            letter-spacing: -0.01em;
        }
        .hero-stat-label {
            font-size: 12px;
            color: #B8AFA6;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }
        .hero-stat-divider {
            width: 1px;
            height: 32px;
            background-color: rgba(255, 255, 255, 0.2);
        }

        /* Hero form panel */
        .hero-panel {
            background-color: var(--surface);
            border-radius: var(--radius-lg);
            padding: 28px 26px;
            box-shadow: var(--shadow-lg);
            max-width: 440px;
            margin-left: auto;
        }
        .hero-panel-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--deep);
            margin-bottom: 6px;
        }
        .hero-panel-sub {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 18px;
        }
        .hero-panel .form-group {
            margin-bottom: 14px;
        }
        .hero-panel label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 5px;
        }
        .hero-panel input,
        .hero-panel select {
            width: 100%;
            padding: 11px 14px;
            border: 1.5px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text);
            background-color: var(--background-soft);
            transition: all var(--transition-fast);
            appearance: auto;
        }
        .hero-panel input:focus,
        .hero-panel select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(194, 84, 14, 0.12);
            background-color: var(--surface);
            outline: none;
        }
        .hero-panel .btn-submit {
            width: 100%;
            padding: 13px 20px;
            border-radius: var(--radius-sm);
            background-color: var(--primary);
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }
        .hero-panel .btn-submit:hover {
            background-color: var(--primary-hover);
            box-shadow: var(--shadow-md);
        }
        .hero-panel-note {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 10px;
            text-align: center;
        }
        .hero-panel-note i {
            color: var(--success);
            margin-right: 4px;
        }

        /* ===== Alert strip ===== */
        .alert-strip {
            background-color: var(--accent-light);
            border-bottom: 1px solid #FDE68A;
            padding: 10px 0;
        }
        .alert-strip-content {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 13px;
            color: #92400E;
            font-weight: 600;
            text-align: center;
            flex-wrap: wrap;
        }
        .alert-strip-content i {
            color: var(--accent);
            font-size: 14px;
        }
        .alert-strip-content .alert-cta {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 5px 14px;
            border-radius: 50px;
            background-color: var(--primary);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 700;
            transition: all var(--transition-fast);
            margin-left: 6px;
        }
        .alert-strip-content .alert-cta:hover {
            background-color: var(--primary-hover);
            color: #FFFFFF;
        }

        /* ===== Sections general ===== */
        .section {
            padding: 64px 0;
        }
        .section-alt {
            background-color: var(--background-soft);
        }
        .section-header {
            margin-bottom: 36px;
        }
        .section-header h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--deep);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .section-header p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 680px;
        }
        .section-header .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
            letter-spacing: 0.06em;
            text-transform: uppercase;
        }

        /* ===== Commission / Reward section ===== */
        .reward-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }
        .reward-card {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 26px 24px;
            transition: all var(--transition-base);
            position: relative;
        }
        .reward-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .reward-card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 16px;
            background-color: var(--primary-light);
            color: var(--primary);
        }
        .reward-card:nth-child(2) .reward-card-icon {
            background-color: var(--accent-light);
            color: #B45309;
        }
        .reward-card:nth-child(3) .reward-card-icon {
            background-color: var(--success-light);
            color: var(--success);
        }
        .reward-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--deep);
        }
        .reward-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 12px;
        }
        .reward-card .reward-value {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 12px;
            border-radius: 50px;
        }

        /* ===== Materials section ===== */
        .materials-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 38px;
            align-items: center;
        }
        .materials-images {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }
        .materials-images img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            transition: all var(--transition-base);
            aspect-ratio: 4/3;
            object-fit: cover;
            width: 100%;
        }
        .materials-images img:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .materials-info h2 {
            font-size: 26px;
            font-weight: 800;
            color: var(--deep);
            margin-bottom: 12px;
        }
        .materials-info p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 18px;
        }
        .materials-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .materials-list-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 16px;
            background-color: var(--surface);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: all var(--transition-fast);
        }
        .materials-list-item:hover {
            border-color: var(--primary);
            background-color: var(--primary-light);
        }
        .materials-list-item i {
            font-size: 18px;
            color: var(--primary);
            margin-top: 2px;
            flex-shrink: 0;
        }
        .materials-list-item .mat-text {
            flex: 1;
        }
        .materials-list-item .mat-text strong {
            display: block;
            font-size: 14px;
            color: var(--deep);
            margin-bottom: 2px;
        }
        .materials-list-item .mat-text span {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ===== News section ===== */
        .news-layout {
            display: grid;
            grid-template-columns: 1.8fr 1fr;
            gap: 30px;
            align-items: start;
        }
        .news-main {
            background-color: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            overflow: hidden;
        }
        .news-main-header {
            padding: 18px 22px;
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
        }
        .news-main-header h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--deep);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .news-main-header h3 i {
            color: var(--primary);
            font-size: 16px;
        }
        .news-main-header .news-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition-fast);
        }
        .news-main-header .news-more:hover {
            color: var(--primary-hover);
            gap: 6px;
        }
        .news-list {
            padding: 4px 0;
        }
        .news-list-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 22px;
            border-bottom: 1px solid var(--border);
            transition: all var(--transition-fast);
        }
        .news-list-item:last-child {
            border-bottom: none;
        }
        .news-list-item:hover {
            background-color: var(--background-soft);
        }
        .news-num {
            font-size: 13px;
            font-weight: 800;
            color: var(--text-muted);
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background-color: var(--background-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }
        .news-list-item:hover .news-num {
            background-color: var(--primary-light);
            color: var(--primary);
        }
        .news-item-content {
            flex: 1;
            min-width: 0;
        }
        .news-item-content a {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            display: block;
            margin-bottom: 4px;
            line-height: 1.45;
            transition: color var(--transition-fast);
        }
        .news-item-content a:hover {
            color: var(--primary);
        }
        .news-item-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .news-item-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .news-item-meta i {
            font-size: 11px;
        }
        .news-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 50px;
            background-color: var(--primary-light);
            color: var(--primary);
            white-space: nowrap;
        }
        .news-item-content a:hover .news-tag {
            background-color: var(--primary);
            color: #FFFFFF;
        }
        /* News sidebar */
        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .news-side-card {
            background-color: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            overflow: hidden;
        }
        .news-side-card img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }
        .news-side-body {
            padding: 16px 18px 18px;
        }
        .news-side-body h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--deep);
            margin-bottom: 6px;
            line-height: 1.45;
        }
        .news-side-body p {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.55;
        }
        .news-side-stats {
            display: flex;
            gap: 16px;
            padding: 12px 18px;
            background-color: var(--background-soft);
            border-top: 1px solid var(--border);
            font-size: 12px;
            color: var(--text-muted);
        }
        .news-side-stats span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ===== FAQ section ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border-strong);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 700;
            color: var(--deep);
            user-select: none;
            transition: all var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== Join CTA ===== */
        .join-band {
            background-color: var(--deep);
            background-image: linear-gradient(rgba(28, 25, 23, 0.82), rgba(28, 25, 23, 0.85)), url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .join-band::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(194,84,14,0.25) 0%, rgba(28,25,23,0.4) 50%, rgba(28,25,23,0.7) 100%);
            pointer-events: none;
        }
        .join-band .container {
            position: relative;
            z-index: 2;
        }
        .join-band h2 {
            font-size: 30px;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }
        .join-band p {
            font-size: 15px;
            color: #D6CEC6;
            line-height: 1.7;
            max-width: 580px;
            margin: 0 auto 28px;
        }
        .join-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 16px 36px;
            border-radius: 50px;
            background-color: var(--accent);
            color: #1C1917;
            font-size: 16px;
            font-weight: 800;
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.4);
            transition: all var(--transition-base);
        }
        .join-btn:hover {
            background-color: #FBBF24;
            color: #1C1917;
            box-shadow: 0 12px 40px rgba(245, 158, 11, 0.55);
            transform: translateY(-3px);
        }
        .join-btn i {
            font-size: 15px;
        }
        .join-note {
            font-size: 13px;
            color: #B8AFA6;
            margin-top: 16px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background-color: var(--deep);
            color: #B8AFA6;
            padding: 48px 0 72px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .footer-brand .footer-logo .header-logo-icon {
            width: 32px;
            height: 32px;
            font-size: 15px;
        }
        .footer-brand .footer-logo-text {
            font-size: 16px;
            font-weight: 700;
            color: #FFFFFF;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: #9C9389;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #EDE8E3;
            margin-bottom: 14px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            font-size: 13px;
            color: #9C9389;
            transition: color var(--transition-fast);
        }
        .footer-col ul a:hover {
            color: #FDE68A;
        }
        .footer-contact p {
            font-size: 13px;
            line-height: 1.7;
            color: #9C9389;
            display: flex;
            align-items: flex-start;
            gap: 8px;
            margin-bottom: 6px;
        }
        .footer-contact p i {
            color: var(--accent);
            font-size: 13px;
            margin-top: 3px;
            flex-shrink: 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: #7A7168;
        }
        .footer-bottom a {
            color: #9C9389;
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: #FDE68A;
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
        }

        /* ===== Floating bottom CTA ===== */
        .floating-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background-color: var(--surface);
            border-top: 1px solid var(--border);
            box-shadow: 0 -4px 16px rgba(28, 25, 23, 0.1);
            z-index: 900;
            padding: 10px 0;
            transform: translateY(100%);
            transition: transform var(--transition-base);
        }
        .floating-cta.visible {
            transform: translateY(0);
        }
        .floating-cta-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            flex-wrap: wrap;
        }
        .floating-cta-text {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.4;
            flex: 1;
            min-width: 0;
        }
        .floating-cta-text strong {
            color: var(--deep);
            display: block;
            font-size: 14px;
        }
        .floating-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 11px 22px;
            border-radius: 50px;
            background-color: var(--primary);
            color: #FFFFFF;
            font-size: 14px;
            font-weight: 700;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .floating-cta-btn:hover {
            background-color: var(--primary-hover);
            color: #FFFFFF;
            box-shadow: var(--shadow-md);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-panel {
                margin-left: 0;
                max-width: 100%;
            }
            .hero h1 {
                font-size: 34px;
            }
            .reward-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .materials-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 768px) {
            .topbar-right {
                display: none;
            }
            .topbar-content {
                justify-content: center;
            }
            .header-nav-desktop {
                display: none;
            }
            .header-search {
                display: none;
            }
            .header-icon-btn {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .header-main {
                height: 60px;
            }
            .header-logo-text {
                font-size: 16px;
            }
            .hero {
                padding: 48px 0 60px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero-desc {
                font-size: 14px;
            }
            .hero-cta-row {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-primary-lg,
            .btn-outline-lg {
                justify-content: center;
                text-align: center;
            }
            .hero-stats {
                gap: 16px;
                justify-content: space-between;
            }
            .hero-stat-number {
                font-size: 20px;
            }
            .hero-stat-divider {
                display: none;
            }
            .section {
                padding: 44px 0;
            }
            .section-header h2 {
                font-size: 23px;
            }
            .reward-grid {
                grid-template-columns: 1fr;
            }
            .materials-images {
                grid-template-columns: 1fr;
            }
            .floating-cta-content {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .floating-cta-btn {
                width: 100%;
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .join-band h2 {
                font-size: 24px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --container-pad: 14px;
                --header-height: 56px;
            }
            .hero {
                padding: 36px 0 48px;
            }
            .hero h1 {
                font-size: 23px;
            }
            .hero-tagline {
                font-size: 15px;
            }
            .hero-panel {
                padding: 20px 16px;
            }
            .hero-panel-title {
                font-size: 16px;
            }
            .section {
                padding: 34px 0;
            }
            .section-header h2 {
                font-size: 20px;
            }
            .reward-card {
                padding: 20px 18px;
            }
            .news-list-item {
                flex-direction: column;
                gap: 8px;
                padding: 14px 16px;
            }
            .news-num {
                width: 24px;
                height: 24px;
                font-size: 11px;
            }
            .news-item-content a {
                font-size: 14px;
            }
            .materials-info h2 {
                font-size: 21px;
            }
            .join-band {
                padding: 48px 0;
            }
            .join-band h2 {
                font-size: 21px;
            }
            .floating-cta-text strong {
                font-size: 13px;
            }
        }