/* roulang page: index */
:root {
            --brand-deep: #161616;
            --accent-red: #e63946;
            --accent-red-hover: #c62828;
            --warm-white: #faf7f2;
            --amber-gold: #c49a6c;
            --amber-gold-light: #d9b88c;
            --text-title: #1a1a1a;
            --text-body: #3a3a3a;
            --text-muted: #787878;
            --text-light: #b0b0b0;
            --text-disabled: #c5c5c5;
            --success-green: #2d6a4f;
            --border-light: #e8e5e0;
            --border-subtle: #e0ddd8;
            --border-card: #eaeaea;
            --bg-card: #faf7f2;
            --bg-white: #ffffff;
            --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
            --shadow-nav: 0 1px 0 rgba(0, 0, 0, 0.06);
            --shadow-nav-scrolled: 0 1px 8px rgba(0, 0, 0, 0.08);
            --shadow-btn-red: 0 2px 8px rgba(230, 57, 70, 0.35);
            --radius-card: 8px;
            --radius-btn: 6px;
            --radius-img: 4px;
            --radius-tag: 4px;
            --radius-faq: 6px;
            --font-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-en: "Inter", "SF Pro Display", -apple-system, sans-serif;
            --nav-height: 64px;
            --bottom-nav-height: 56px;
            --section-gap: 100px;
            --section-gap-mobile: 64px;
            --container-max: 1200px;
            --container-px: 24px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.25s ease;
            --transition-medium: 0.3s ease;
            --transition-slow: 0.6s ease-out;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            font-size: 15.5px;
            line-height: 1.75;
            font-weight: 400;
            color: var(--text-body);
            background-color: var(--warm-white);
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            outline: none;
        }
        input,
        textarea {
            font-family: inherit;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-title);
            font-weight: 700;
            line-height: 1.3;
        }
        h1 {
            font-size: 52px;
            line-height: 1.15;
            font-weight: 800;
            letter-spacing: -0.5px;
        }
        h2 {
            font-size: 30px;
            font-weight: 700;
            letter-spacing: -0.2px;
        }
        h3 {
            font-size: 19px;
            font-weight: 600;
            line-height: 1.4;
        }
        p {
            margin-bottom: 0.6em;
        }
        p:last-child {
            margin-bottom: 0;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--container-px);
            padding-right: var(--container-px);
        }

        /* ============ NAVIGATION - DESKTOP ============ */
        .nav-desktop {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-card);
            transition: box-shadow var(--transition-medium);
            display: flex;
            align-items: center;
        }
        .nav-desktop.scrolled {
            box-shadow: var(--shadow-nav-scrolled);
        }
        .nav-desktop .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--container-px);
            height: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--brand-deep);
            letter-spacing: 0.3px;
            white-space: nowrap;
            font-family: var(--font-cn);
        }
        .nav-logo .logo-diamond {
            display: inline-block;
            width: 10px;
            height: 10px;
            background: var(--amber-gold);
            transform: rotate(45deg);
            border-radius: 1.5px;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            position: relative;
            padding: 8px 15px;
            font-size: 14.5px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-btn);
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.2px;
        }
        .nav-links a:hover {
            color: var(--accent-red);
            background: rgba(230, 57, 70, 0.03);
        }
        .nav-links a.active {
            color: var(--accent-red);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background: var(--accent-red);
            border-radius: 2px;
            transition: width var(--transition-medium), left var(--transition-medium);
        }
        .nav-links a:not(.active)::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--accent-red);
            border-radius: 2px;
            transition: width var(--transition-medium);
        }

        /* ============ BOTTOM NAV - MOBILE ============ */
        .nav-mobile {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1001;
            height: var(--bottom-nav-height);
            background: var(--bg-white);
            border-top: 1px solid var(--border-card);
            padding-bottom: env(safe-area-inset-bottom, 0px);
            box-shadow: 0 -1px 6px rgba(0, 0, 0, 0.05);
        }
        .nav-mobile .nav-mobile-inner {
            display: flex;
            align-items: center;
            justify-content: space-around;
            height: 100%;
            padding: 0 8px;
        }
        .nav-mobile a {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            font-size: 10px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 4px 10px;
            border-radius: 8px;
            transition: color var(--transition-fast), background var(--transition-fast);
            min-width: 52px;
            letter-spacing: 0.1px;
        }
        .nav-mobile a i {
            font-size: 17px;
            transition: color var(--transition-fast);
        }
        .nav-mobile a.active {
            color: var(--accent-red);
            font-weight: 600;
        }
        .nav-mobile a.active i {
            color: var(--accent-red);
        }
        .nav-mobile a:active {
            background: rgba(230, 57, 70, 0.04);
        }

        /* ============ HERO ============ */
        .hero-section {
            min-height: 85vh;
            display: flex;
            align-items: center;
            padding-top: var(--nav-height);
            position: relative;
            overflow: hidden;
            background: var(--warm-white);
        }
        .hero-inner {
            display: flex;
            align-items: center;
            gap: 0;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 40px var(--container-px);
            min-height: 75vh;
        }
        .hero-left {
            flex: 0 0 55%;
            padding-right: 48px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            position: relative;
        }
        .hero-left::after {
            content: '';
            position: absolute;
            right: 0;
            top: 15%;
            height: 70%;
            width: 1px;
            background: var(--border-subtle);
        }
        .hero-left h1 {
            margin-bottom: 16px;
            color: var(--brand-deep);
        }
        .hero-left .hero-subtitle {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 440px;
        }
        .hero-cta-group {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .hero-right {
            flex: 0 0 45%;
            display: flex;
            align-items: center;
            justify-content: center;
            padding-left: 48px;
        }
        .hero-right .hero-img-wrap {
            position: relative;
            width: 100%;
            border-radius: var(--radius-img);
            overflow: hidden;
            aspect-ratio: 4/3;
            background: #1a1a1a;
        }
        .hero-right .hero-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center 30%;
            opacity: 0.92;
            transition: transform 0.6s ease;
        }
        .hero-right .hero-img-wrap:hover img {
            transform: scale(1.03);
        }
        .hero-right .hero-img-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(22, 22, 22, 0.35) 0%, rgba(22, 22, 22, 0.08) 50%, rgba(22, 22, 22, 0.3) 100%);
            pointer-events: none;
        }
        .hero-scroll-indicator {
            position: absolute;
            bottom: 28px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            animation: scrollPulse 2.2s ease-in-out infinite;
            z-index: 2;
        }
        .hero-scroll-indicator .scroll-line {
            width: 1.5px;
            height: 28px;
            background: var(--text-muted);
            border-radius: 2px;
            animation: scrollLine 2.2s ease-in-out infinite;
        }
        .hero-scroll-indicator .scroll-dot {
            width: 5px;
            height: 5px;
            background: var(--accent-red);
            border-radius: 50%;
            animation: scrollDot 2.2s ease-in-out infinite;
        }
        @keyframes scrollPulse {
            0%,
            100% {
                opacity: 0.6;
            }
            50% {
                opacity: 1;
            }
        }
        @keyframes scrollLine {
            0%,
            100% {
                height: 28px;
            }
            50% {
                height: 16px;
            }
        }
        @keyframes scrollDot {
            0%,
            100% {
                transform: translateY(0);
                opacity: 0.5;
            }
            50% {
                transform: translateY(6px);
                opacity: 1;
            }
        }

        /* ============ BUTTONS ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.5px;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
            white-space: nowrap;
            cursor: pointer;
            line-height: 1;
        }
        .btn-primary {
            background: var(--accent-red);
            color: #fff;
            border: 1.5px solid var(--accent-red);
        }
        .btn-primary:hover {
            background: var(--accent-red-hover);
            border-color: var(--accent-red-hover);
            transform: translateY(-1px);
            box-shadow: var(--shadow-btn-red);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--text-title);
            border: 1.5px solid var(--text-body);
        }
        .btn-outline:hover {
            border-color: var(--accent-red);
            color: var(--accent-red);
            background: rgba(230, 57, 70, 0.03);
            transform: translateY(-1px);
        }
        .btn-link {
            background: transparent;
            color: var(--accent-red);
            padding: 8px 4px;
            border: none;
            font-weight: 500;
            position: relative;
            letter-spacing: 0.3px;
        }
        .btn-link::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 0;
            width: 0;
            height: 1.5px;
            background: var(--accent-red);
            transition: width var(--transition-medium);
        }
        .btn-link:hover::after {
            width: 100%;
        }
        .btn-link .arrow-icon {
            transition: transform var(--transition-fast);
        }
        .btn-link:hover .arrow-icon {
            transform: translateX(4px);
        }
        .btn:disabled,
        .btn.disabled {
            opacity: 0.4;
            cursor: not-allowed;
            pointer-events: none;
        }
        .btn .ripple-effect {
            position: absolute;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.4);
            transform: scale(0);
            animation: ripple 0.5s ease-out forwards;
            pointer-events: none;
        }
        @keyframes ripple {
            to {
                transform: scale(4);
                opacity: 0;
            }
        }

        /* ============ SECTION COMMON ============ */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-header h2 {
            margin-bottom: 8px;
            color: var(--brand-deep);
        }
        .section-header .section-subtitle-en {
            font-family: var(--font-en);
            font-size: 13px;
            font-weight: 500;
            color: var(--amber-gold);
            letter-spacing: 1.5px;
            text-transform: uppercase;
            display: block;
            margin-bottom: 8px;
        }

        /* ============ FEATURES GRID ============ */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 32px 24px 28px;
            text-align: center;
            transition: all var(--transition-smooth);
            cursor: default;
            border: 1px solid transparent;
            position: relative;
        }
        .feature-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            background: #f6f2eb;
            border-color: #e8e3da;
        }
        .feature-card .feature-icon {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--amber-gold);
            stroke-width: 1.5px;
        }
        .feature-card h3 {
            margin-bottom: 8px;
            color: var(--brand-deep);
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* ============ CASE WATERFALL ============ */
        .case-waterfall {
            columns: 3;
            column-gap: 24px;
            break-inside: avoid;
        }
        .case-card {
            break-inside: avoid;
            margin-bottom: 24px;
            background: var(--bg-white);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            cursor: pointer;
            display: inline-block;
            width: 100%;
        }
        .case-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .case-card .case-img-wrap {
            overflow: hidden;
            border-radius: var(--radius-img) var(--radius-img) 0 0;
            position: relative;
        }
        .case-card .case-img-wrap img {
            width: 100%;
            display: block;
            transition: transform 0.5s ease;
            object-fit: cover;
        }
        .case-card:hover .case-img-wrap img {
            transform: scale(1.04);
        }
        .case-card .case-img-h {
            aspect-ratio: 16/9;
        }
        .case-card .case-img-v {
            aspect-ratio: 3/4;
        }
        .case-card .case-body {
            padding: 16px 18px 18px;
        }
        .case-card .case-tag {
            display: inline-block;
            font-size: 11.5px;
            font-weight: 600;
            color: var(--amber-gold);
            background: rgba(196, 154, 108, 0.1);
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            letter-spacing: 0.4px;
            margin-bottom: 8px;
        }
        .case-card h3 {
            font-size: 17px;
            margin-bottom: 4px;
            color: var(--text-title);
        }
        .case-card .case-date {
            font-size: 12.5px;
            color: var(--text-muted);
        }

        /* ============ PRICING COMPARISON ============ */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: stretch;
        }
        .pricing-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            box-shadow: var(--shadow-card);
            border: 1.5px solid transparent;
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            position: relative;
        }
        .pricing-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .pricing-card.recommended {
            border-left: 3px solid var(--accent-red);
            box-shadow: var(--shadow-card-hover);
            position: relative;
            z-index: 2;
        }
        .pricing-card.recommended .pricing-recommend-badge {
            position: absolute;
            top: 14px;
            right: 16px;
            background: var(--accent-red);
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            letter-spacing: 0.5px;
        }
        .pricing-card .pricing-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--brand-deep);
            margin-bottom: 4px;
        }
        .pricing-card .pricing-price {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 20px;
            font-weight: 500;
            letter-spacing: 0.3px;
        }
        .pricing-card .pricing-features {
            list-style: none;
            flex: 1;
            margin-bottom: 20px;
        }
        .pricing-card .pricing-features li {
            padding: 7px 0;
            font-size: 14.5px;
            color: var(--text-body);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.5;
        }
        .pricing-card .pricing-features li .check-icon {
            color: var(--success-green);
            font-weight: 700;
            flex-shrink: 0;
            font-size: 14px;
            margin-top: 1px;
        }
        .pricing-card .pricing-features li .dash-icon {
            color: var(--text-light);
            flex-shrink: 0;
            font-size: 14px;
            margin-top: 1px;
        }
        .pricing-card .btn {
            margin-top: auto;
            width: 100%;
        }
        .pricing-cta-bottom {
            text-align: center;
            margin-top: 36px;
        }

        /* ============ FAQ ============ */
        .faq-layout {
            display: flex;
            gap: 48px;
            align-items: flex-start;
        }
        .faq-left {
            flex: 0 0 35%;
            position: sticky;
            top: calc(var(--nav-height) + 40px);
        }
        .faq-left h2 {
            margin-bottom: 8px;
        }
        .faq-left .faq-guide {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .faq-right {
            flex: 0 0 65%;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-light);
            overflow: hidden;
            transition: background var(--transition-fast);
        }
        .faq-item:first-child {
            border-top: 1px solid var(--border-light);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 16px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15.5px;
            color: var(--text-title);
            user-select: none;
            transition: color var(--transition-fast);
            gap: 12px;
            border-radius: var(--radius-faq);
        }
        .faq-question:hover {
            color: var(--accent-red);
            background: rgba(230, 57, 70, 0.02);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--text-muted);
            transition: transform var(--transition-medium), color var(--transition-fast);
        }
        .faq-item.active .faq-question {
            color: var(--accent-red);
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            color: var(--accent-red);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 16px 18px;
            color: #5a5a5a;
            font-size: 14.5px;
            line-height: 1.7;
        }

        /* ============ CTA BANNER ============ */
        .cta-banner {
            background: var(--brand-deep);
            padding: 64px 24px;
            text-align: center;
            color: #fff;
            border-radius: 0;
        }
        .cta-banner .cta-banner-title {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: 0.2px;
        }
        .cta-banner .cta-banner-sub {
            font-size: 14.5px;
            color: #999;
            margin-bottom: 24px;
        }
        .cta-banner .btn-primary {
            font-size: 16px;
            padding: 16px 40px;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--brand-deep);
            color: #bbb;
            padding: 56px 0 32px;
            font-size: 14px;
            line-height: 1.7;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-col h4 {
            color: #ddd;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer-col .footer-logo-text {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }
        .footer-col p {
            color: #999;
            font-size: 13.5px;
            line-height: 1.6;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 6px;
        }
        .footer-col ul li a {
            color: #999;
            font-size: 13.5px;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--accent-red);
        }
        .footer-col .social-icons {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .footer-col .social-icons a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: #999;
            font-size: 15px;
            transition: all var(--transition-fast);
        }
        .footer-col .social-icons a:hover {
            background: var(--accent-red);
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 12.5px;
            color: #666;
            letter-spacing: 0.2px;
        }
        .footer-bottom a {
            color: #888;
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: var(--accent-red);
        }

        /* ============ FADE-IN ANIMATION ============ */
        .fade-in-section {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease-out, transform 0.6s ease-out;
        }
        .fade-in-section.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .hero-inner {
                flex-direction: column;
                gap: 36px;
                min-height: auto;
                padding: 32px var(--container-px) 48px;
            }
            .hero-left {
                flex: 0 0 auto;
                padding-right: 0;
                text-align: center;
                align-items: center;
            }
            .hero-left::after {
                display: none;
            }
            .hero-left .hero-subtitle {
                max-width: 500px;
            }
            .hero-right {
                flex: 0 0 auto;
                padding-left: 0;
                width: 100%;
                max-width: 500px;
            }
            .hero-cta-group {
                justify-content: center;
            }
            .hero-scroll-indicator {
                bottom: 16px;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .case-waterfall {
                columns: 2;
                column-gap: 20px;
            }
            .case-card {
                margin-bottom: 20px;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
                gap: 20px;
                max-width: 500px;
                margin: 0 auto;
            }
            .pricing-card.recommended {
                order: -1;
            }
            .faq-layout {
                flex-direction: column;
                gap: 28px;
            }
            .faq-left {
                flex: 0 0 auto;
                position: static;
                text-align: center;
            }
            .faq-right {
                flex: 0 0 auto;
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            h1 {
                font-size: 38px;
            }
            h2 {
                font-size: 26px;
            }
            .section {
                padding: 72px 0;
            }
            .hero-section {
                min-height: auto;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .nav-mobile {
                display: block;
            }
            body {
                padding-bottom: var(--bottom-nav-height);
                padding-bottom: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom, 0px));
            }
            html {
                scroll-padding-top: 16px;
            }
            .hero-section {
                padding-top: 20px;
                min-height: auto;
            }
            .hero-inner {
                flex-direction: column;
                gap: 24px;
                padding: 20px var(--container-px) 40px;
            }
            .hero-left {
                text-align: center;
                align-items: center;
                padding-right: 0;
            }
            .hero-left::after {
                display: none;
            }
            .hero-right {
                width: 100%;
                max-width: 420px;
                padding-left: 0;
            }
            .hero-cta-group {
                justify-content: center;
                flex-direction: column;
                gap: 12px;
            }
            .hero-cta-group .btn {
                width: 100%;
            }
            h1 {
                font-size: 32px;
            }
            h2 {
                font-size: 23px;
            }
            h3 {
                font-size: 17px;
            }
            .section {
                padding: 56px 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .feature-card {
                padding: 22px 14px 20px;
            }
            .case-waterfall {
                columns: 1;
                column-gap: 0;
            }
            .case-card {
                margin-bottom: 18px;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
                max-width: 420px;
                margin: 0 auto;
                gap: 16px;
            }
            .pricing-card.recommended {
                order: -1;
            }
            .faq-layout {
                flex-direction: column;
                gap: 20px;
            }
            .faq-left {
                text-align: center;
                position: static;
            }
            .faq-right {
                width: 100%;
            }
            .cta-banner {
                padding: 44px 16px;
            }
            .cta-banner .cta-banner-title {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                text-align: center;
            }
            .footer-col .social-icons {
                justify-content: center;
            }
            .hero-scroll-indicator {
                display: none;
            }
            .pricing-cta-bottom .btn {
                width: 100%;
            }
        }

        @media (max-width: 480px) {
            h1 {
                font-size: 28px;
            }
            h2 {
                font-size: 21px;
            }
            h3 {
                font-size: 16px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .hero-right {
                max-width: 100%;
            }
            .btn {
                padding: 12px 24px;
                font-size: 14px;
            }
            .section {
                padding: 44px 0;
            }
            .nav-mobile a {
                font-size: 9px;
                padding: 3px 7px;
                min-width: 44px;
            }
            .nav-mobile a i {
                font-size: 15px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-inner {
                padding: 12px 16px 32px;
            }
            .case-card .case-body {
                padding: 12px 14px 14px;
            }
            .pricing-card {
                padding: 24px 16px;
            }
            .faq-question {
                padding: 14px 10px;
                font-size: 14px;
            }
            .faq-answer-inner {
                padding: 0 10px 14px;
                font-size: 13.5px;
            }
            .cta-banner {
                padding: 36px 12px;
            }
            .cta-banner .cta-banner-title {
                font-size: 19px;
            }
            .site-footer {
                padding: 36px 0 24px;
            }
        }

        @media (min-width: 769px) {
            .nav-mobile {
                display: none !important;
            }
        }