/* roulang page: index */
:root {
            --primary: #4F46E5;
            --primary-dark: #4338CA;
            --secondary: #FB7185;
            --tertiary: #A78BFA;
            --bg: #FAFAF9;
            --dark: #1E1B4B;
            --text: #1F2937;
            --text-light: #6B7280;
            --border: #E7E5E4;
            --success: #10B981;
            --card-radius: 16px;
            --button-radius: 12px;
            --container-width: 1200px;
            --shadow-sm: 0 2px 10px rgba(30, 27, 75, 0.06);
            --shadow-lg: 0 12px 24px rgba(30, 27, 75, 0.10);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 16px;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        button {
            border: none;
            cursor: pointer;
            font-family: inherit;
        }
        input, textarea {
            font-family: inherit;
        }

        .container {
            max-width: var(--container-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Sticky Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(30, 27, 75, 0.04);
        }
        .header-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
        }
        .logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.5px;
        }
        .logo-dot {
            width: 8px;
            height: 8px;
            background: var(--secondary);
            border-radius: 50%;
            display: inline-block;
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
            height: 36px;
            padding: 0 20px;
            border-radius: 8px;
            font-size: 0.875rem;
            font-weight: 500;
            transition: all 0.2s ease;
        }
        .btn-login:hover {
            background: var(--primary);
            color: #fff;
        }

        /* Chip Nav */
        .chip-nav {
            overflow-x: auto;
            -ms-overflow-style: none;
            scrollbar-width: none;
            padding: 8px 0 12px;
            display: flex;
            gap: 8px;
        }
        .chip-nav::-webkit-scrollbar {
            display: none;
        }
        .chip-nav .chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            background: #fff;
            border: 1px solid var(--border);
            font-size: 0.875rem;
            font-weight: 500;
            white-space: nowrap;
            color: var(--text);
            transition: all 0.2s ease;
            flex-shrink: 0;
        }
        .chip-nav .chip:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .chip-nav .chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* Hero */
        .hero {
            position: relative;
            padding: 60px 0 80px;
            background: var(--dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.38;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
            padding: 40px 0;
        }
        .hero h1 {
            font-size: clamp(32px, 5vw, 48px);
            line-height: 1.2;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: #fff;
            margin-bottom: 20px;
        }
        .hero-sub {
            color: rgba(255, 255, 255, 0.92);
            font-size: 1.125rem;
            line-height: 1.75;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 28px;
            border-radius: var(--button-radius);
            font-size: 0.9375rem;
            font-weight: 600;
            transition: all 0.25s ease;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 8px 20px rgba(79, 70, 229, 0.35);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.7);
            color: #fff;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }
        .hero-meta {
            display: flex;
            gap: 32px;
            margin-top: 48px;
            color: rgba(255, 255, 255, 0.85);
        }
        .hero-meta .num {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
        }
        .hero-meta .label {
            font-size: 0.8125rem;
            opacity: 0.8;
        }

        /* Section */
        .section {
            padding: 96px 0;
        }
        .section-white {
            background: #fff;
        }
        .section-tint {
            background: #F3F4F8;
        }
        .section-header {
            margin-bottom: 48px;
        }
        .section-header .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(79, 70, 229, 0.08);
            color: var(--primary);
            font-size: 0.8125rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .section-header h2 {
            font-size: clamp(26px, 3vw, 32px);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
        }
        .section-header p {
            color: var(--text-light);
            font-size: 1.0625rem;
            margin-top: 12px;
            max-width: 720px;
        }

        /* Cards */
        .card {
            background: #fff;
            border-radius: var(--card-radius);
            border: 1px solid var(--border);
            padding: 28px;
            transition: box-shadow 0.3s ease, transform 0.3s ease;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .card-icon {
            width: 44px;
            height: 44px;
            background: rgba(79, 70, 229, 0.08);
            color: var(--primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            margin-bottom: 16px;
        }
        .card h3 {
            font-size: 1.125rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .card p {
            color: var(--text-light);
            font-size: 0.9375rem;
            line-height: 1.7;
        }

        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        /* Pain Section */
        .pain-card {
            text-align: center;
            padding: 36px 28px;
        }
        .pain-card .card-icon {
            margin-left: auto;
            margin-right: auto;
            background: rgba(251, 113, 133, 0.1);
            color: var(--secondary);
        }

        /* Solution */
        .sol-card {
            display: flex;
            flex-direction: column;
        }
        .sol-media {
            width: 100%;
            height: 90px;
            border-radius: 12px;
            object-fit: cover;
            margin-bottom: 16px;
        }

        /* Stats */
        .stats-section {
            background: var(--dark);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(251, 113, 133, 0.2);
            border-radius: 50%;
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stat-label {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.875rem;
            margin-top: 8px;
        }
        .stat-item {
            position: relative;
            padding: 8px 0;
        }
        .stat-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background: var(--secondary);
            border-radius: 2px;
        }

        /* Testimonials */
        .testimonial-card {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 32px;
            border: 1px solid var(--border);
            position: relative;
        }
        .testimonial-card .quote-mark {
            font-size: 3rem;
            color: var(--tertiary);
            opacity: 0.3;
            line-height: 1;
            margin-bottom: -10px;
            font-family: Georgia, serif;
        }
        .testimonial-card blockquote {
            margin: 14px 0 20px;
            color: var(--text);
            font-size: 0.9375rem;
            line-height: 1.8;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }
        .avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--tertiary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 0.875rem;
        }
        .author-name {
            font-weight: 600;
            font-size: 0.875rem;
            color: var(--text);
        }
        .author-role {
            font-size: 0.75rem;
            color: var(--text-light);
        }

        /* CTA */
        .cta-section {
            background: var(--dark);
            position: relative;
            padding: 96px 0;
            text-align: center;
            overflow: hidden;
        }
        .cta-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
        }
        .cta-content {
            position: relative;
            z-index: 2;
        }
        .cta-content h2 {
            color: #fff;
            font-size: clamp(26px, 4vw, 36px);
            font-weight: 700;
            margin-bottom: 20px;
        }
        .btn-big {
            height: 56px;
            padding: 0 40px;
            font-size: 1.0625rem;
            border-radius: 16px;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
        }
        .faq-item:first-child {
            border-top: 1px solid var(--border);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.0625rem;
            color: var(--text);
            padding: 4px 0;
        }
        .faq-question .fa {
            transition: transform 0.3s ease;
            color: var(--primary);
        }
        .faq-item.open .faq-question .fa {
            transform: rotate(45deg);
        }
        .faq-item.open .faq-question {
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            font-size: 0.9375rem;
            color: #4B5563;
            line-height: 1.75;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
            padding-top: 12px;
        }

        /* Footer */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 32px;
            font-size: 0.875rem;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.2fr 2fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 1.5rem;
            margin-bottom: 16px;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.6);
            max-width: 280px;
            font-size: 0.8125rem;
            line-height: 1.7;
        }
        .footer-links-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.8125rem;
            padding: 6px 0;
            transition: color 0.2s ease;
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* Focus */
        a:focus, button:focus {
            outline: 3px solid rgba(79, 70, 229, 0.5);
            outline-offset: 2px;
        }
        input:focus {
            outline: 3px solid rgba(79, 70, 229, 0.15);
            border-color: var(--primary);
        }

        /* Media Queries */
        @media (min-width: 768px) and (max-width: 1023px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 1023px) {
            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-links-grid {
                gap: 16px;
            }
        }

        @media (max-width: 767px) {
            .section {
                padding: 64px 0;
            }
            .grid-3 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .grid-2 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .grid-4 {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .hero {
                padding: 48px 0 60px;
            }
            .hero-content {
                padding: 20px 0;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-meta {
                justify-content: space-between;
                gap: 12px;
                flex-wrap: wrap;
            }
            .footer-links-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
            .bs-grid {
                grid-template-columns: 1fr;
            }
            .btn-big {
                width: 100%;
            }
        }

        /* Activity banner */
        .activity-card {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: flex-end;
        }
        .activity-card .bg-image {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .activity-card .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(30, 27, 75, 0.85) 0%, rgba(30, 27, 75, 0.2) 80%);
        }
        .activity-card .content {
            position: relative;
            z-index: 2;
            padding: 32px;
            color: #fff;
        }
        .activity-card .content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .activity-card .content p {
            font-size: 0.875rem;
            opacity: 0.85;
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .activity-badge {
            display: inline-flex;
            background: var(--secondary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        /* Countdown */
        .countdown-wrap {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 28px 32px;
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }
        .countdown-text {
            flex: 1;
            min-width: 300px;
        }
        .countdown-text .label {
            font-size: 0.875rem;
            color: var(--secondary);
            font-weight: 600;
            margin-bottom: 8px;
        }
        .countdown-text .title {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .countdown-text p {
            color: var(--text-light);
            font-size: 0.9375rem;
        }
        .countdown-timer {
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .timer-block {
            background: var(--dark);
            border-radius: 12px;
            padding: 12px 16px;
            min-width: 70px;
            text-align: center;
        }
        .timer-block .num {
            font-size: 1.75rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .timer-block .unit {
            font-size: 0.6875rem;
            color: rgba(255, 255, 255, 0.6);
        }

        /* Ticket table */
        .ticket-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .ticket-card {
            border-radius: var(--card-radius);
            background: #fff;
            border: 1px solid var(--border);
            padding: 32px 28px;
            position: relative;
            text-align: center;
            transition: box-shadow 0.3s ease;
        }
        .ticket-card:hover {
            box-shadow: var(--shadow-lg);
        }
        .ticket-card.featured {
            border: 2px solid var(--primary);
            background: linear-gradient(rgba(79, 70, 229, 0.03), #fff);
        }
        .ticket-tag {
            position: absolute;
            top: -10px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--secondary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            letter-spacing: 0.3px;
        }
        .ticket-name {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .ticket-price {
            font-size: 2rem;
            font-weight: 800;
            color: var(--dark);
            margin: 12px 0;
        }
        .ticket-price span {
            font-size: 0.875rem;
            font-weight: 400;
            color: var(--text-light);
        }
        .ticket-features {
            list-style: none;
            margin-bottom: 24px;
        }
        .ticket-features li {
            padding: 6px 0;
            font-size: 0.875rem;
            color: #4B5563;
        }
        .ticket-features li i {
            color: var(--success);
            margin-right: 6px;
            font-size: 0.75rem;
        }

        /* Video cards */
        .media-card {
            background: #fff;
            border-radius: var(--card-radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: box-shadow 0.3s ease, transform 0.3s ease;
        }
        .media-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .media-cover {
            position: relative;
            height: 200px;
            overflow: hidden;
        }
        .media-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .media-card:hover .media-cover img {
            transform: scale(1.05);
        }
        .media-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(0, 0, 0, 0.65);
            color: #fff;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 500;
            backdrop-filter: blur(4px);
        }
        .media-body {
            padding: 20px;
        }
        .media-body .title {
            font-size: 1.0625rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text);
        }
        .media-body .desc {
            font-size: 0.875rem;
            color: var(--text-light);
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .media-meta {
            display: flex;
            justify-content: space-between;
            font-size: 0.75rem;
            color: var(--text-light);
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }

        /* Feature list */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1.4fr;
            gap: 60px;
            align-items: center;
        }
        .feature-row.reverse {
            grid-template-columns: 1.4fr 1fr;
        }
        @media (max-width: 767px) {
            .feature-row, .feature-row.reverse {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        .btn-arrow:hover i {
            transform: translateX(4px);
        }
        .btn-arrow i {
            transition: transform 0.25s ease;
        }

        /* Misc */
        .divider {
            display: flex;
            align-items: center;
            gap: 16px;
            color: var(--text-light);
            font-size: 0.9375rem;
        }
        .divider::before, .divider::after {
            content: '';
            flex: 1;
            height: 1px;
            background: var(--border);
        }
        .chip-tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 0.8125rem;
            font-weight: 500;
            background: rgba(79, 70, 229, 0.07);
            color: var(--primary);
        }
        .chip-tag-pink {
            background: rgba(251, 113, 133, 0.08);
            color: var(--secondary);
        }

        .filter-bar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding: 16px 20px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 24px;
        }
        .filter-bar .count {
            font-size: 0.875rem;
            color: var(--text-light);
        }
        .filter-bar .count span {
            font-weight: 700;
            color: var(--text);
        }
        .filter-btn-group {
            display: flex;
            gap: 8px;
        }
        .filter-btn {
            padding: 8px 20px;
            border-radius: 999px;
            border: 1px solid var(--border);
            background: #fff;
            font-size: 0.8125rem;
            font-weight: 500;
            color: var(--text);
            transition: all 0.2s ease;
            cursor: pointer;
        }
        .filter-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .filter-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

/* roulang page: category1 */
:root {
  --primary: #4F46E5;
  --primary-dark: #4338CA;
  --secondary: #FB7185;
  --tertiary: #A78BFA;
  --bg: #FAFAF9;
  --dark: #1E1B4B;
  --text: #1F2937;
  --text-light: #6B7280;
  --border: #E7E5E4;
  --success: #10B981;
  --card-radius: 16px;
  --button-radius: 12px;
  --container-width: 1200px;
  --shadow-sm: 0 2px 10px rgba(30, 27, 75, 0.06);
  --shadow-lg: 0 12px 24px rgba(30, 27, 75, 0.10);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  margin: 0;
}

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

a {
  text-decoration: none;
  color: inherit;
}

button {
  border: none;
  cursor: pointer;
  font-family: inherit;
}

input, textarea {
  font-family: inherit;
}

.container {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

*:focus-visible {
  outline: 3px solid rgba(79, 70, 229, 0.4);
  outline-offset: 2px;
}

/* ===== Header & Chip Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 8px rgba(30, 27, 75, 0.04);
}

.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.5px;
}

.logo-dot {
  width: 8px;
  height: 8px;
  background: var(--secondary);
  border-radius: 50%;
  display: inline-block;
}

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

.btn-login {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
  height: 36px;
  padding: 0 20px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-login:hover {
  background: var(--primary);
  color: #fff;
}

.btn-login:active {
  transform: scale(0.97);
}

.chip-nav {
  overflow-x: auto;
  -ms-overflow-style: none;
  scrollbar-width: none;
  padding: 8px 0 12px;
  display: flex;
  gap: 8px;
}

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

.chip-nav .chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--border);
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
  color: var(--text);
  transition: all 0.2s ease;
  flex-shrink: 0;
}

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

.chip-nav .chip:active {
  transform: scale(0.97);
}

.chip-nav .chip.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ===== Category Hero ===== */
.cat-hero {
  position: relative;
  min-height: 320px;
  display: flex;
  align-items: center;
  padding: 64px 0 72px;
  background: var(--dark);
  overflow: hidden;
}

.cat-hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
}

.cat-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(30, 27, 75, 0.92) 0%, rgba(30, 27, 75, 0.62) 55%, rgba(79, 70, 229, 0.32) 100%);
}

.cat-hero .container {
  position: relative;
  z-index: 2;
  width: 100%;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 18px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.72);
  transition: color 0.2s ease;
}

.breadcrumb a:hover {
  color: #fff;
}

.breadcrumb .sep {
  opacity: 0.5;
}

.breadcrumb .current {
  color: rgba(255, 255, 255, 0.95);
  font-weight: 500;
}

.cat-hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: #fff;
  margin: 0 0 14px;
}

.cat-hero-sub {
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.9);
  max-width: 640px;
  margin: 0;
}

/* ===== Section ===== */
.section {
  padding: 96px 0;
}

.section-white {
  background: #fff;
}

.section-tint {
  background: #F3F4F8;
}

.section-header {
  margin-bottom: 48px;
  max-width: 720px;
}

.section-header.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary);
  background: rgba(79, 70, 229, 0.08);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: clamp(26px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 12px;
  color: var(--text);
}

.section-header p {
  color: var(--text-light);
  font-size: 1rem;
  margin: 0;
}

/* ===== Button ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--button-radius);
  font-size: 0.9375rem;
  font-weight: 600;
  transition: all 0.25s ease;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 8px 20px rgba(79, 70, 229, 0.35);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: scale(0.98);
}

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

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}

.btn-outline:active {
  transform: scale(0.98);
}

.btn-lg {
  height: 56px;
  padding: 0 36px;
  border-radius: 16px;
  font-size: 1rem;
}

/* ===== Feature Cards ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.feature-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: rgba(79, 70, 229, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 18px;
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 8px;
}

.feature-card p {
  color: var(--text-light);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin: 0;
}

/* ===== Sorter ===== */
.sorter {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
  padding: 14px 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
}

.sorter-count {
  font-size: 0.9375rem;
  color: var(--text-light);
}

.sorter-count strong {
  color: var(--text);
  font-weight: 600;
}

.sorter-btns {
  display: flex;
  gap: 8px;
}

.sorter-btn {
  height: 34px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  font-size: 0.8125rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.sorter-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.sorter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ===== Video Card Grid ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.video-card {
  background: #fff;
  border-radius: var(--card-radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.video-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.video-card.hidden-card {
  display: none;
}

.video-cover {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.video-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.video-card:hover .video-cover img {
  transform: scale(1.05);
}

.video-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(79, 70, 229, 0.92);
  color: #fff;
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 999px;
  font-weight: 500;
  line-height: 1.5;
}

.video-body {
  padding: 20px 24px 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.video-body h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.4;
  margin: 0 0 8px;
}

.video-body p {
  font-size: 0.875rem;
  color: var(--text-light);
  line-height: 1.6;
  margin: 0 0 18px;
  flex: 1;
}

.video-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: #9CA3AF;
  border-top: 1px solid #F3F4F6;
  padding-top: 14px;
}

.load-more-wrap {
  text-align: center;
  margin-top: 40px;
}

/* ===== Split Section ===== */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.split-media {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.split-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.split-quote {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 16px;
  background: rgba(30, 27, 75, 0.88);
  color: #fff;
  padding: 16px 20px;
  border-radius: 14px;
  font-size: 0.875rem;
  line-height: 1.6;
}

.quote-author {
  display: block;
  margin-top: 10px;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.72);
}

.split-list {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
}

.split-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9375rem;
}

.split-list li:first-child {
  padding-top: 0;
}

.split-list li i {
  color: var(--primary);
  margin-top: 5px;
  flex-shrink: 0;
}

.split-list li strong {
  font-weight: 600;
}

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

.step-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.step-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--tertiary);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9375rem;
  margin-bottom: 16px;
}

.step-card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin: 0 0 6px;
}

.step-card p {
  font-size: 0.875rem;
  color: var(--text-light);
  line-height: 1.6;
  margin: 0;
}

/* ===== CTA Band ===== */
.cta-band {
  background: var(--primary);
  padding: 72px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-band::before,
.cta-band::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}

.cta-band::before {
  width: 240px;
  height: 240px;
  top: -80px;
  left: -60px;
}

.cta-band::after {
  width: 320px;
  height: 320px;
  bottom: -120px;
  right: -80px;
}

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

.cta-band h2 {
  color: #fff;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.2;
  margin: 0 0 12px;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.0625rem;
  margin: 0 0 28px;
}

.btn-white {
  background: #fff;
  color: var(--primary);
  height: 56px;
  padding: 0 36px;
  border-radius: 16px;
  font-weight: 700;
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.25s ease;
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.18);
}

.btn-white:active {
  transform: scale(0.98);
}

.btn-white i {
  font-size: 0.875rem;
  transition: transform 0.25s ease;
}

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

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-item:first-child {
  border-top: 1px solid var(--border);
}

.faq-question {
  width: 100%;
  background: transparent;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 22px 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: color 0.2s ease;
}

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

.faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--text-light);
  transition: all 0.3s ease;
}

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

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-item.open .faq-answer {
  max-height: 260px;
}

.faq-answer p {
  margin: 0;
  padding: 0 0 22px;
  font-size: 0.9375rem;
  color: #4B5563;
  line-height: 1.7;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.75);
  padding: 72px 0 32px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 2.6fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-brand .logo {
  color: #fff;
}

.footer-brand p {
  margin: 16px 0 0;
  max-width: 320px;
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer-links-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 600;
  margin: 0 0 16px;
}

.footer-col a {
  display: block;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 10px;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 28px;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-links a {
  width: 34px;
  height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  transition: all 0.2s ease;
}

.social-links a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .feature-grid,
  .video-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .split-section {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 36px;
  }
}

@media (max-width: 640px) {
  .section {
    padding: 64px 0;
  }

  .cat-hero {
    min-height: 260px;
    padding: 48px 0 56px;
  }

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

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

  .sorter {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-right .btn-login:first-child {
    display: none;
  }

  .split-media img {
    aspect-ratio: 16 / 10;
  }

  .cta-band {
    padding: 56px 0;
  }
}