:root {
            --bg: #fafbf8;
            --surface: #ffffff;
            --text: #1a221e;
            --text-secondary: #445a4c;
            --text-muted: #6b7d6f;
            --accent: #1a6b4c;
            --accent-dark: #0f4d35;
            --accent-light: #edf7f2;
            --accent-glow: rgba(26, 107, 76, 0.10);
            --teal: #1a6b4c;
            --teal-light: #edf7f2;
            --border: #dce5de;
            --border-light: #eef3ef;
            --warm-highlight: #fdf6ed;
            --amber-accent: #c47a1a;
            --amber-light: #fef9f2;
            --shadow-sm: 0 1px 4px rgba(26, 34, 30, 0.04);
            --shadow-md: 0 6px 20px rgba(26, 34, 30, 0.05);
            --shadow-lg: 0 16px 36px rgba(26, 34, 30, 0.08);
            --shadow-xl: 0 24px 48px rgba(26, 34, 30, 0.10);
            --radius-sm: 14px;
            --radius-md: 22px;
            --radius-lg: 34px;
            --radius-xl: 46px;
            --radius-full: 999px;
            --transition: 0.20s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: 'Inter', system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        }

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

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

        body {
            font-family: var(--font-stack);
            background: var(--bg);
            color: var(--text);
            line-height: 1.65;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            background-image:
                radial-gradient(ellipse at 12% 8%, rgba(26, 107, 76, 0.025) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 55%, rgba(26, 107, 76, 0.018) 0%, transparent 48%),
                radial-gradient(ellipse at 35% 82%, rgba(196, 122, 26, 0.015) 0%, transparent 42%);
            background-attachment: fixed;
        }

        .container {
            max-width: 1220px;
            margin: 0 auto;
            padding: 0 26px;
        }

        /* ── HEADER ────────────────────── */
        header {
            background: rgba(255, 255, 255, 0.84);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            position: sticky;
            top: 0;
            z-index: 120;
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 15px 0;
            gap: 12px;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--accent);
            border-radius: 11px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            letter-spacing: -0.5px;
            box-shadow: 0 4px 14px rgba(26, 107, 76, 0.28);
        }
        .logo-text {
            font-weight: 780;
            font-size: 1.3rem;
            color: var(--text);
            letter-spacing: -0.35px;
        }
        .logo-text span {
            color: var(--accent);
        }
        .nav-links {
            display: flex;
            gap: 8px;
            align-items: center;
            flex-wrap: wrap;
            font-size: 0.91rem;
        }
        .nav-links a {
            text-decoration: none;
            font-weight: 530;
            color: var(--text-secondary);
            transition: var(--transition);
            padding: 7px 15px;
            border-radius: var(--radius-full);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent);
            background: var(--accent-light);
        }
        .btn-download-nav {
            background: var(--accent) !important;
            color: #fff !important;
            padding: 9px 21px !important;
            border-radius: var(--radius-full) !important;
            font-weight: 600 !important;
            box-shadow: 0 3px 12px rgba(26, 107, 76, 0.24);
            transition: var(--transition) !important;
        }
        .btn-download-nav:hover {
            background: var(--accent-dark) !important;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(26, 107, 76, 0.32);
        }

        /* ── HERO ────────────────────── */
        .hero {
            display: grid;
            grid-template-columns: 1fr 0.82fr;
            gap: 46px;
            padding: 54px 0 48px;
            align-items: center;
        }
        .hero-left .version-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: var(--accent-light);
            color: var(--accent);
            font-weight: 640;
            font-size: 0.86rem;
            padding: 6px 15px;
            border-radius: var(--radius-full);
            margin-bottom: 16px;
            letter-spacing: -0.15px;
            animation: pulse-badge 2.6s ease-in-out infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(26, 107, 76, 0.28);
            }
            50% {
                box-shadow: 0 0 0 12px rgba(26, 107, 76, 0);
            }
        }
        .version-badge .dot {
            width: 9px;
            height: 9px;
            background: #3cb878;
            border-radius: 50%;
            animation: blink-dot 1.5s ease-in-out infinite;
        }
        @keyframes blink-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }
        .hero-left h1 {
            font-size: clamp(2.1rem, 4.3vw, 3.3rem);
            font-weight: 850;
            line-height: 1.16;
            color: var(--text);
            margin-bottom: 15px;
            letter-spacing: -0.55px;
        }
        .hero-left h1 .accent {
            color: var(--accent);
            position: relative;
            display: inline-block;
        }
        .hero-left h1 .accent::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 0;
            width: 100%;
            height: 7px;
            background: rgba(26, 107, 76, 0.16);
            border-radius: 3px;
            z-index: -1;
        }
        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 500px;
            margin-bottom: 26px;
            line-height: 1.6;
        }
        .hero-buttons {
            display: flex;
            gap: 13px;
            flex-wrap: wrap;
            margin-bottom: 34px;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            text-decoration: none;
            font-weight: 620;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 7px;
            box-shadow: 0 7px 20px rgba(26, 107, 76, 0.26);
            border: none;
            cursor: pointer;
            font-size: 0.98rem;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-3px);
            box-shadow: 0 13px 28px rgba(26, 107, 76, 0.34);
        }
        .btn-outline {
            background: transparent;
            border: 1.5px solid var(--accent);
            color: var(--accent);
            padding: 12px 24px;
            border-radius: var(--radius-full);
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.95rem;
            white-space: nowrap;
        }
        .btn-outline:hover {
            background: var(--accent-light);
            border-color: var(--accent-dark);
            color: var(--accent-dark);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            gap: 34px;
            flex-wrap: wrap;
        }
        .stat-block h3 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.12;
            letter-spacing: -0.25px;
        }
        .stat-block p {
            color: var(--text-muted);
            font-size: 0.83rem;
            margin-top: 2px;
        }
        /* 右侧视觉 */
        .hero-right {
            background: var(--surface);
            border-radius: var(--radius-xl);
            padding: 28px 24px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
            text-align: center;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 13px;
            position: relative;
            overflow: hidden;
        }
        .hero-right::before {
            content: '';
            position: absolute;
            top: -38px;
            right: -38px;
            width: 130px;
            height: 130px;
            background: radial-gradient(circle, rgba(26, 107, 76, 0.07) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .floating-pill {
            background: #fff;
            border-radius: 50px;
            padding: 11px 22px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
            font-weight: 520;
            display: flex;
            align-items: center;
            gap: 10px;
            animation: float 3.2s ease-in-out infinite;
            font-size: 0.91rem;
            z-index: 1;
            position: relative;
        }
        .floating-pill:nth-child(2) {
            animation-delay: 0.5s;
        }
        .floating-pill:nth-child(3) {
            animation-delay: 1s;
        }
        .floating-pill .pill-icon {
            font-size: 1.35rem;
        }
        @keyframes float {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-6px);
            }
        }

        /* ── SECTION通用 ────────────────── */
        .section {
            padding: 38px 0 44px;
        }
        .section-title {
            text-align: center;
            font-size: clamp(1.55rem, 2.8vw, 2rem);
            font-weight: 750;
            margin-bottom: 12px;
            color: var(--text);
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            margin-bottom: 36px;
            font-size: 0.95rem;
            max-width: 580px;
            margin-left: auto;
            margin-right: auto;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 48px;
            height: 3.5px;
            background: var(--accent);
            border-radius: 3px;
            margin: 12px auto 0;
        }

        /* ── 长内容区 ────────────────── */
        .long-content {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 38px 34px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
            max-width: 880px;
            margin: 0 auto;
        }
        .long-content h3 {
            font-size: 1.22rem;
            font-weight: 700;
            color: var(--teal);
            margin: 22px 0 9px;
            letter-spacing: -0.18px;
        }
        .long-content h3:first-child {
            margin-top: 0;
        }
        .long-content p {
            color: var(--text-secondary);
            margin-bottom: 13px;
            font-size: 0.94rem;
            line-height: 1.7;
        }
        .long-content .highlight-box {
            background: var(--teal-light);
            border-radius: var(--radius-sm);
            padding: 17px 20px;
            margin: 16px 0;
            border-left: 4px solid var(--teal);
            font-size: 0.91rem;
            color: #1a3d2a;
            line-height: 1.6;
        }

        /* ── 卡片网格 ────────────────── */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(235px, 1fr));
            gap: 20px;
        }
        .eco-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 26px 21px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            text-decoration: none;
            color: inherit;
            display: flex;
            flex-direction: column;
            gap: 9px;
            position: relative;
            overflow: hidden;
        }
        .eco-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3.5px;
            background: var(--accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
            border-radius: 0 0 var(--radius-md) var(--radius-md);
        }
        .eco-card:hover::after {
            transform: scaleX(1);
        }
        .eco-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
        }
        .eco-card .card-icon {
            font-size: 2rem;
            line-height: 1;
        }
        .eco-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.18px;
        }
        .eco-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            flex: 1;
            line-height: 1.5;
        }
        .eco-card .card-link-text {
            font-weight: 620;
            color: var(--accent);
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 0.88rem;
            margin-top: auto;
        }

        /* ── 教程卡片 ────────────────── */
        .tutorial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(205px, 1fr));
            gap: 16px;
        }
        .tutorial-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 20px 18px;
            border: 1px solid var(--border-light);
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
            display: flex;
            align-items: flex-start;
            gap: 11px;
            box-shadow: var(--shadow-sm);
        }
        .tutorial-card:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-md);
            transform: translateX(3px);
        }
        .tutorial-card .tut-num {
            font-weight: 800;
            font-size: 1.5rem;
            color: var(--accent);
            opacity: 0.7;
            line-height: 1;
            flex-shrink: 0;
            min-width: 30px;
        }
        .tutorial-card .tut-info h4 {
            font-size: 0.95rem;
            font-weight: 650;
            color: var(--text);
            margin-bottom: 3px;
            letter-spacing: -0.12px;
        }
        .tutorial-card .tut-info p {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.4;
        }

        /* ── 下载聚合表 ────────────────── */
        .dl-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            background: var(--surface);
            border: 1px solid var(--border-light);
            margin-top: 18px;
        }
        .dl-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 580px;
            text-align: left;
        }
        .dl-table thead th {
            background: #f7faf5;
            padding: 15px 17px;
            font-weight: 680;
            font-size: 0.88rem;
            color: var(--text);
            border-bottom: 2px solid var(--border);
            letter-spacing: -0.18px;
            white-space: nowrap;
        }
        .dl-table tbody td {
            padding: 14px 17px;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.88rem;
            color: var(--text-secondary);
            vertical-align: middle;
        }
        .dl-table tbody tr {
            transition: var(--transition);
        }
        .dl-table tbody tr:hover {
            background: #f9fcf6;
        }
        .dl-table .dl-link {
            color: var(--accent);
            text-decoration: none;
            font-weight: 620;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
        }
        .dl-table .dl-link:hover {
            color: var(--accent-dark);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .platform-badge {
            display: inline-block;
            padding: 4px 11px;
            border-radius: var(--radius-full);
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--teal-light);
            color: var(--teal);
            white-space: nowrap;
        }
        .platform-badge.win {
            background: #e8f0f8;
            color: #2b5a8c;
        }
        .platform-badge.mac {
            background: #f0eef8;
            color: #4b3d78;
        }
        .platform-badge.android {
            background: #e8f5e9;
            color: #2e5c30;
        }

        /* ── FAQ ────────────────────── */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 9px;
        }
        .faq-list details {
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            padding: 5px 18px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .faq-list details[open] {
            border-color: var(--accent);
            box-shadow: var(--shadow-md);
            padding-bottom: 14px;
        }
        .faq-list summary {
            font-weight: 650;
            font-size: 0.98rem;
            cursor: pointer;
            padding: 15px 0;
            color: var(--text);
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            letter-spacing: -0.12px;
            outline: none;
        }
        .faq-list summary::-webkit-details-marker {
            display: none;
        }
        .faq-list summary::after {
            content: '+';
            font-size: 1.4rem;
            font-weight: 300;
            color: var(--accent);
            transition: transform 0.3s ease;
            flex-shrink: 0;
            margin-left: 11px;
        }
        .faq-list details[open] summary::after {
            content: '−';
            transform: rotate(180deg);
        }
        .faq-list .faq-answer {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            padding: 3px 0 7px;
        }

        /* ── CTA ────────────────────── */
        .cta-section {
            background: linear-gradient(115deg, #16261a 0%, #1f3d25 40%, #162e1c 100%);
            border-radius: var(--radius-xl);
            padding: 48px 34px;
            margin: 40px auto 36px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-xl);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        .cta-section h2,
        .cta-section p,
        .cta-section .btn-cta {
            max-width: 580px;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -55px;
            right: -55px;
            width: 190px;
            height: 190px;
            background: radial-gradient(circle, rgba(60, 184, 120, 0.28) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -35px;
            left: -35px;
            width: 150px;
            height: 150px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: clamp(1.5rem, 2.8vw, 2.1rem);
            font-weight: 800;
            margin-bottom: 11px;
            position: relative;
            z-index: 1;
            letter-spacing: -0.25px;
        }
        .cta-section p {
            font-size: 1.02rem;
            opacity: 0.87;
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }
        .btn-cta {
            background: #fff;
            color: #16261a;
            padding: 14px 40px;
            border-radius: var(--radius-full);
            font-weight: 700;
            text-decoration: none;
            font-size: 1.03rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 9px;
            box-shadow: 0 7px 26px rgba(0, 0, 0, 0.18);
            position: relative;
            z-index: 1;
        }
        .btn-cta:hover {
            background: #f2fdf5;
            transform: scale(1.03);
            box-shadow: 0 13px 32px rgba(0, 0, 0, 0.26);
        }

        /* ── 下载选择器卡片 ────── */
        .download-stack {
            display: flex;
            flex-direction: column;
            gap: 22px;
        }
        .dl-choice-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 26px 30px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            gap: 22px;
            flex-wrap: wrap;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .dl-choice-card:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .dl-choice-card .choice-icon {
            font-size: 2.6rem;
            background: var(--accent-light);
            width: 66px;
            height: 66px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 22px;
            flex-shrink: 0;
            color: var(--accent);
        }
        .choice-content {
            flex: 1;
        }
        .choice-content h4 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 5px;
        }
        .choice-content .badge-row {
            display: flex;
            gap: 9px;
            flex-wrap: wrap;
            margin: 7px 0 11px;
        }
        .choice-content .desc {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.5;
            margin-bottom: 11px;
        }
        .choice-actions {
            display: flex;
            gap: 9px;
            flex-wrap: wrap;
        }

        /* ── 认知引导盒子 ─────────── */
        .knowledge-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 18px;
        }
        .knowledge-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 24px 22px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .knowledge-card h3 {
            font-size: 1.14rem;
            font-weight: 700;
            color: var(--teal);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 7px;
        }
        .knowledge-card p {
            color: var(--text-secondary);
            font-size: 0.88rem;
            line-height: 1.6;
        }

        /* ── 步骤流程 ─────────────── */
        .steps-row {
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .step-item {
            flex: 1 1 170px;
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 22px 16px;
            text-align: center;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            position: relative;
        }
        .step-num {
            display: inline-block;
            width: 38px;
            height: 38px;
            background: var(--accent);
            color: #fff;
            border-radius: 50%;
            font-weight: 800;
            font-size: 1.15rem;
            line-height: 38px;
            margin-bottom: 10px;
        }
        .step-item h4 {
            font-weight: 700;
            margin-bottom: 5px;
            font-size: 0.95rem;
        }
        .step-item p {
            font-size: 0.82rem;
            color: var(--text-secondary);
        }

        /* ── 场景标签 ─────────────── */
        .scene-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 20px;
        }
        .scene-tag {
            background: var(--surface);
            border: 1px solid var(--border);
            padding: 8px 18px;
            border-radius: var(--radius-full);
            font-size: 0.86rem;
            font-weight: 530;
            color: var(--text-secondary);
            transition: var(--transition);
            cursor: default;
            white-space: nowrap;
        }
        .scene-tag:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: var(--accent-light);
        }

        /* ── FOOTER ────────────────── */
        .footer {
            background: #172418;
            color: #b8c9bb;
            padding: 40px 0 22px;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }
        .footer-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 30px;
        }
        .footer-col h4 {
            color: #fff;
            margin-bottom: 11px;
            font-size: 0.93rem;
            letter-spacing: -0.12px;
        }
        .footer-col a {
            color: #b8c9bb;
            text-decoration: none;
            display: block;
            margin-bottom: 6px;
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .footer-copyright {
            text-align: center;
            padding-top: 28px;
            font-size: 0.8rem;
            border-top: 1px solid #2d402f;
            margin-top: 22px;
            color: #8a9a8c;
        }
        .footer-disclaimer {
            text-align: center;
            font-size: 0.74rem;
            color: #6d7e6f;
            margin-top: 10px;
            line-height: 1.5;
        }

        /* ── RESPONSIVE ────────────── */
        @media (max-width: 900px) {
            .hero {
                grid-template-columns: 1fr;
                gap: 28px;
                padding: 32px 0 28px;
            }
            .hero-right {
                order: -1;
                padding: 18px 14px;
            }
            .hero-left h1 {
                font-size: 1.8rem;
            }
            .nav-bar {
                flex-direction: column;
                align-items: stretch;
            }
            .nav-links {
                gap: 5px;
                font-size: 0.82rem;
            }
            .nav-links a {
                padding: 6px 11px;
            }
            .long-content {
                padding: 22px 16px;
            }
            .cta-section {
                padding: 30px 18px;
                border-radius: var(--radius-lg);
            }
            .dl-table {
                min-width: 460px;
            }
            .dl-choice-card {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 480px) {
            .hero-buttons {
                flex-direction: column;
                gap: 9px;
            }
            .hero-buttons a {
                text-align: center;
                justify-content: center;
            }
            .hero-stats {
                gap: 18px;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .tutorial-grid {
                grid-template-columns: 1fr;
            }
            .container {
                padding: 0 13px;
            }
        }