/* roulang page: index */
:root {
            --brand-carbon: #1C1C1E;
            --competition-red: #E43D2A;
            --antique-gold: #B8945A;
            --warm-ivory: #FAF9F5;
            --deep-bg: #1C1C1E;
            --card-white: #FFFFFF;
            --text-primary: #2B2B2B;
            --text-secondary: #6B6B6B;
            --text-light: #9B9B9B;
            --border-line: #E8E5DF;
            --success-green: #1B7A3D;
            --card-shadow: 0 2px 8px rgba(28, 28, 30, 0.06);
            --card-shadow-hover: 0 8px 32px rgba(28, 28, 30, 0.14);
            --nav-shadow: 0 2px 20px rgba(28, 28, 30, 0.08);
            --brand-font: 'PingFang SC', 'Microsoft YaHei', 'Heiti SC', 'Noto Sans SC', sans-serif;
            --body-font: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
            --container-max: 1280px;
            --radius-xl: 16px;
            --radius-lg: 10px;
            --radius-md: 6px;
            --radius-sm: 4px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 32px;
            --spacing-xl: 48px;
            --spacing-2xl: 64px;
            --spacing-3xl: 80px;
            --spacing-4xl: 120px;
            --spacing-5xl: 160px;
            --nav-height-desktop: 64px;
            --nav-height-mobile: 56px;
        }

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

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

        body {
            font-family: var(--body-font);
            font-size: 17px;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--warm-ivory);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 200ms ease;
        }

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

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

        input {
            font-family: inherit;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 40px;
            padding-right: 40px;
        }

        /* ========== HEADER / NAVIGATION ========== */
        #header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #FFFFFF;
            height: var(--nav-height-desktop);
            display: flex;
            align-items: center;
            transition: box-shadow 250ms ease, background 250ms ease;
        }

        #header.scrolled {
            box-shadow: var(--nav-shadow);
            background: #FFFFFF;
        }

        #header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 6px;
            font-family: var(--brand-font);
            font-size: 20px;
            font-weight: 800;
            color: var(--brand-carbon);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .nav-brand .brand-slash {
            color: var(--antique-gold);
            font-weight: 400;
            margin: 0 2px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }

        .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-primary);
            position: relative;
            padding-bottom: 4px;
            transition: color 200ms ease;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--antique-gold);
            transition: width 200ms ease;
        }

        .nav-links a:hover {
            color: var(--competition-red);
        }
        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-cta-btn {
            display: inline-block;
            background: var(--competition-red);
            color: #FFFFFF !important;
            font-size: 12px;
            font-weight: 600;
            padding: 8px 20px;
            border-radius: var(--radius-md);
            letter-spacing: 0.04em;
            transition: all 200ms ease;
            white-space: nowrap;
        }
        .nav-cta-btn:hover {
            background: #C4341F;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(228, 61, 42, 0.35);
        }
        .nav-cta-btn::after {
            display: none !important;
        }

        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            z-index: 1001;
            cursor: pointer;
        }
        .nav-hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--brand-carbon);
            border-radius: 2px;
            transition: all 300ms ease;
        }
        .nav-hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        .nav-mobile-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: var(--warm-ivory);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 24px;
            animation: slideDown 300ms ease forwards;
        }
        .nav-mobile-overlay.active {
            display: flex;
        }
        .nav-mobile-overlay a {
            font-size: 18px;
            font-weight: 600;
            color: var(--brand-carbon);
            transition: color 200ms ease;
        }
        .nav-mobile-overlay a:hover {
            color: var(--competition-red);
        }
        .nav-mobile-overlay .nav-cta-btn {
            font-size: 14px;
            padding: 12px 28px;
            margin-top: 8px;
        }

        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ========== SECTION BASE ========== */
        section {
            padding-top: var(--spacing-5xl);
            padding-bottom: var(--spacing-5xl);
        }
        section.section-dark {
            background: var(--deep-bg);
            color: #FFFFFF;
        }
        section.section-light {
            background: var(--warm-ivory);
        }

        .section-label {
            display: inline-block;
            border: 1px solid var(--antique-gold);
            border-radius: var(--radius-sm);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--antique-gold);
            text-transform: uppercase;
            margin-bottom: var(--spacing-sm);
        }

        .section-h2 {
            font-family: var(--brand-font);
            font-size: 40px;
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.2;
            color: var(--brand-carbon);
            margin-bottom: var(--spacing-sm);
        }
        .section-dark .section-h2 {
            color: #FFFFFF;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.6;
            margin-bottom: var(--spacing-xl);
        }
        .section-dark .section-subtitle {
            color: #B8B5AE;
        }

        .decorative-line {
            width: 24px;
            height: 2px;
            background: var(--antique-gold);
            margin-bottom: var(--spacing-sm);
            display: inline-block;
        }

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

        /* ========== HERO ========== */
        #hero {
            background: var(--warm-ivory);
            position: relative;
            overflow: hidden;
            padding-top: var(--spacing-2xl);
            padding-bottom: var(--spacing-3xl);
        }
        #hero::after {
            content: '';
            position: absolute;
            right: -180px;
            bottom: -120px;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            border: 2px solid rgba(28, 28, 30, 0.04);
            pointer-events: none;
        }
        #hero .container {
            display: flex;
            align-items: center;
            gap: var(--spacing-3xl);
            position: relative;
            z-index: 1;
        }
        .hero-left {
            flex: 0 0 55%;
            max-width: 55%;
        }
        .hero-left .section-label {
            margin-bottom: var(--spacing-md);
        }
        .hero-left h1 {
            font-family: var(--brand-font);
            font-size: 56px;
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.12;
            color: var(--brand-carbon);
            margin-bottom: var(--spacing-md);
        }
        .hero-left .hero-subtitle {
            font-size: 18px;
            font-weight: 400;
            color: var(--text-secondary);
            max-width: 520px;
            line-height: 1.6;
            margin-bottom: var(--spacing-lg);
        }
        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }
        .btn-primary {
            display: inline-block;
            background: var(--competition-red);
            color: #FFFFFF;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.04em;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            transition: all 200ms ease;
            border: none;
            cursor: pointer;
            text-align: center;
        }
        .btn-primary:hover {
            background: #C4341F;
            transform: translateY(-1px);
            box-shadow: 0 6px 24px rgba(228, 61, 42, 0.4);
        }
        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--brand-carbon);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.04em;
            padding: 13px 31px;
            border-radius: var(--radius-md);
            border: 1.5px solid var(--brand-carbon);
            transition: all 200ms ease;
            cursor: pointer;
            text-align: center;
        }
        .btn-outline:hover {
            background: var(--brand-carbon);
            color: #FFFFFF;
            transform: translateY(-1px);
        }
        .hero-right {
            flex: 0 0 45%;
            max-width: 45%;
            position: relative;
            min-height: 420px;
            border-radius: var(--radius-xl);
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-right::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(28, 28, 30, 0.25) 0%, rgba(228, 61, 42, 0.15) 50%, rgba(184, 149, 90, 0.18) 100%);
            z-index: 1;
            border-radius: var(--radius-xl);
        }
        .hero-geo-decor {
            position: absolute;
            width: 140px;
            height: 140px;
            border: 3px solid rgba(255, 255, 255, 0.5);
            border-radius: 50%;
            top: 15%;
            right: 10%;
            z-index: 2;
        }
        .hero-geo-decor::after {
            content: '';
            position: absolute;
            width: 60px;
            height: 60px;
            background: rgba(228, 61, 42, 0.6);
            border-radius: 50%;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }
        .hero-geo-arc {
            position: absolute;
            width: 200px;
            height: 80px;
            border: 3px solid rgba(184, 149, 90, 0.6);
            border-top: none;
            border-radius: 0 0 120px 120px;
            bottom: 20%;
            left: 8%;
            z-index: 2;
        }

        /* ========== ADVANTAGES ========== */
        #advantages .advantages-grid {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-md);
            margin-top: var(--spacing-xl);
        }
        .adv-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--card-shadow);
            display: flex;
            gap: 24px;
            align-items: flex-start;
            transition: all 300ms ease-out;
            border: 1px solid transparent;
            cursor: default;
        }
        .adv-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow-hover);
            border-color: var(--border-line);
        }
        .adv-card-top {
            flex: 0 0 48%;
        }
        .adv-card-bottom {
            flex: 0 0 100%;
        }
        .adv-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: #FFFFFF;
            background: var(--brand-carbon);
            transition: all 300ms ease;
        }
        .adv-card:hover .adv-icon {
            background: var(--competition-red);
            box-shadow: 0 0 20px rgba(228, 61, 42, 0.3);
        }
        .adv-icon.gold {
            background: var(--antique-gold);
        }
        .adv-icon.red {
            background: var(--competition-red);
        }
        .adv-text h3 {
            font-family: var(--brand-font);
            font-size: 20px;
            font-weight: 700;
            color: var(--brand-carbon);
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .adv-text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 440px;
        }

        /* ========== SERVICES ========== */
        #services .services-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-xl);
        }
        .service-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-line);
            transition: all 300ms ease-out;
            display: flex;
            flex-direction: column;
            height: 380px;
        }
        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow-hover);
            border-color: var(--competition-red);
        }
        .service-card-img {
            flex: 0 0 45%;
            position: relative;
            overflow: hidden;
            background: #e0dcd4;
        }
        .service-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 400ms ease;
        }
        .service-card:hover .service-card-img img {
            transform: scale(1.03);
        }
        .service-card-img::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60%;
            background: linear-gradient(to top, rgba(28, 28, 30, 0.75) 0%, transparent 100%);
            z-index: 1;
        }
        .service-card-img .service-img-title {
            position: absolute;
            bottom: 16px;
            left: 20px;
            right: 20px;
            z-index: 2;
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.3;
            font-family: var(--brand-font);
        }
        .service-card-body {
            flex: 0 0 55%;
            padding: 20px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .service-card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .service-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            font-weight: 600;
            color: var(--competition-red);
            transition: all 200ms ease;
            margin-top: 8px;
            align-self: flex-start;
        }
        .service-link .arrow {
            display: inline-block;
            transition: transform 200ms ease;
        }
        .service-link:hover .arrow {
            transform: translateX(3px);
        }

        /* ========== SCENARIOS ========== */
        #scenarios .scenario-row {
            display: flex;
            align-items: center;
            gap: var(--spacing-3xl);
            margin-bottom: var(--spacing-3xl);
            position: relative;
        }
        #scenarios .scenario-row:last-child {
            margin-bottom: 0;
        }
        .scenario-row.reverse {
            flex-direction: row-reverse;
        }
        .scenario-img {
            flex: 0 0 55%;
            border-radius: 12px;
            overflow: hidden;
            position: relative;
            min-height: 340px;
            background-size: cover;
            background-position: center;
            filter: saturate(0.6) sepia(0.15);
            transition: filter 400ms ease;
        }
        .scenario-img:hover {
            filter: saturate(0.9) sepia(0.05);
        }
        .scenario-text {
            flex: 0 0 45%;
            position: relative;
            padding: var(--spacing-md) 0;
        }
        .scenario-watermark {
            position: absolute;
            font-family: var(--brand-font);
            font-size: 72px;
            font-weight: 900;
            color: rgba(184, 149, 90, 0.25);
            top: -30px;
            left: 0;
            line-height: 1;
            pointer-events: none;
            z-index: 0;
            letter-spacing: -0.03em;
        }
        .scenario-text h3 {
            font-family: var(--brand-font);
            font-size: 24px;
            font-weight: 700;
            color: var(--brand-carbon);
            margin-bottom: var(--spacing-sm);
            position: relative;
            z-index: 1;
        }
        .scenario-text p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            position: relative;
            z-index: 1;
            max-width: 440px;
        }

        /* ========== CASES ========== */
        #cases .data-strip {
            background: var(--deep-bg);
            padding: 60px 0;
            margin-bottom: 0;
        }
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            text-align: center;
        }
        .data-item .data-number {
            font-family: var(--brand-font);
            font-size: 48px;
            font-weight: 900;
            color: var(--antique-gold);
            line-height: 1;
            margin-bottom: 4px;
        }
        .data-item .data-suffix {
            font-size: 18px;
            font-weight: 400;
            color: var(--antique-gold);
        }
        .data-item .data-label {
            font-size: 14px;
            color: #9B9B9B;
            margin-top: 8px;
        }
        .logo-wall {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 28px;
            padding: 48px 0;
            align-items: center;
        }
        .logo-placeholder {
            width: 100px;
            height: 44px;
            background: #d5d1c8;
            border-radius: 6px;
            filter: grayscale(100%);
            transition: filter 300ms ease, transform 300ms ease;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            color: #888;
            letter-spacing: 0.04em;
        }
        .logo-placeholder:hover {
            filter: grayscale(0%);
            transform: scale(1.06);
            color: #333;
            background: #e8e4db;
        }
        .testimonial-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
            padding-bottom: 40px;
        }
        .testimonial-card {
            background: #F7F6F2;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border-left: 3px solid var(--antique-gold);
            transition: all 300ms ease;
        }
        .testimonial-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-2px);
        }
        .testimonial-card blockquote {
            font-size: 16px;
            font-style: italic;
            color: var(--text-primary);
            line-height: 1.7;
            margin-bottom: 12px;
            quotes: none;
        }
        .testimonial-card .author {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ========== PRICING ========== */
        #pricing .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-xl);
            align-items: stretch;
        }
        .pricing-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            border: 2px solid var(--border-line);
            box-shadow: var(--card-shadow);
            display: flex;
            flex-direction: column;
            transition: all 300ms ease;
            position: relative;
        }
        .pricing-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow-hover);
        }
        .pricing-card.featured {
            border-color: var(--competition-red);
            transform: translateY(-8px);
            box-shadow: 0 12px 40px rgba(28, 28, 30, 0.16);
            z-index: 2;
        }
        .pricing-card.featured:hover {
            transform: translateY(-10px);
        }
        .pricing-badge {
            display: inline-block;
            background: var(--antique-gold);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            white-space: nowrap;
        }
        .pricing-card h3 {
            font-family: var(--brand-font);
            font-size: 20px;
            font-weight: 700;
            color: var(--brand-carbon);
            margin-bottom: 8px;
            text-align: center;
        }
        .pricing-price {
            text-align: center;
            margin-bottom: 16px;
        }
        .pricing-price .price-num {
            font-family: var(--brand-font);
            font-size: 36px;
            font-weight: 900;
            color: var(--brand-carbon);
            line-height: 1;
        }
        .pricing-price .price-unit {
            font-size: 14px;
            color: var(--text-secondary);
        }
        .pricing-divider {
            border: none;
            border-top: 1px solid var(--border-line);
            margin: 16px 0;
        }
        .pricing-features {
            list-style: none;
            flex: 1;
        }
        .pricing-features li {
            font-size: 14px;
            color: var(--text-primary);
            padding: 8px 0;
            display: flex;
            align-items: center;
            gap: 10px;
            line-height: 1.5;
        }
        .pricing-features li::before {
            content: '✓';
            color: var(--antique-gold);
            font-weight: 700;
            font-size: 14px;
            flex-shrink: 0;
        }
        .pricing-card .btn-primary,
        .pricing-card .btn-outline {
            width: 100%;
            text-align: center;
            margin-top: 16px;
            padding: 12px 20px;
            font-size: 14px;
        }

        /* ========== FAQ ========== */
        #faq .faq-list {
            max-width: 780px;
            margin: var(--spacing-xl) auto 0;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-line);
            cursor: pointer;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0;
            font-size: 17px;
            font-weight: 600;
            color: var(--brand-carbon);
            transition: color 200ms ease;
            gap: 16px;
            user-select: none;
        }
        .faq-item.active .faq-question {
            color: var(--competition-red);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--competition-red);
            transition: transform 300ms ease;
            font-weight: 300;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 400ms ease;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 0 16px 0;
            font-size: 16px;
            color: var(--text-primary);
            line-height: 1.8;
            background: transparent;
        }
        .faq-item.active .faq-answer-inner {
            background: #FAF9F5;
            padding: 8px 0 16px 0;
        }

        /* ========== CTA ========== */
        #cta {
            background: var(--deep-bg);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        #cta::before {
            content: '';
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.06);
            top: -120px;
            right: -80px;
            pointer-events: none;
        }
        #cta::after {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.04);
            bottom: -80px;
            left: -60px;
            pointer-events: none;
        }
        #cta .container {
            position: relative;
            z-index: 1;
        }
        #cta h2 {
            font-family: var(--brand-font);
            font-size: 36px;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: var(--spacing-sm);
            line-height: 1.3;
        }
        #cta .cta-subtitle {
            font-size: 16px;
            color: #B8B5AE;
            max-width: 500px;
            margin: 0 auto var(--spacing-lg);
            line-height: 1.6;
        }
        #cta .btn-primary {
            font-size: 16px;
            padding: 16px 40px;
        }
        #cta .cta-footnote {
            font-size: 13px;
            color: #9B9B9B;
            margin-top: 12px;
        }

        /* ========== FOOTER ========== */
        #footer {
            background: var(--deep-bg);
            color: #FFFFFF;
            padding-top: var(--spacing-3xl);
            padding-bottom: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            padding-bottom: var(--spacing-xl);
        }
        .footer-brand .footer-logo {
            font-family: var(--brand-font);
            font-size: 20px;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 8px;
        }
        .footer-brand .footer-logo .gold-dot {
            color: var(--antique-gold);
        }
        .footer-brand p {
            font-size: 13px;
            color: #9B9B9B;
            max-width: 240px;
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1.5px solid var(--antique-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--antique-gold);
            font-size: 14px;
            transition: all 200ms ease;
        }
        .footer-social a:hover {
            background: var(--competition-red);
            border-color: var(--competition-red);
            color: #FFFFFF;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: #9B9B9B;
            transition: color 200ms ease;
        }
        .footer-col ul li a:hover {
            color: #FFFFFF;
        }
        .footer-col p {
            font-size: 13px;
            color: #9B9B9B;
            line-height: 1.7;
        }
        .footer-qr {
            width: 80px;
            height: 80px;
            background: #FFFFFF;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            color: #999;
            text-align: center;
            line-height: 1.3;
            margin-bottom: 8px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
            font-size: 12px;
            color: #6B6B6B;
        }

        /* ========== FADE-UP ON LOAD ========== */
        .fade-up-section {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 500ms ease, transform 500ms ease;
        }
        .fade-up-section.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .fade-up-section > * {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 500ms ease, transform 500ms ease;
            transition-delay: calc(var(--stagger-index, 0) * 100ms);
        }
        .fade-up-section.visible > * {
            opacity: 1;
            transform: translateY(0);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1199px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
            section {
                padding-top: 120px;
                padding-bottom: 120px;
            }
            .section-h2 {
                font-size: 32px;
            }
            #hero .container {
                gap: 32px;
            }
            .hero-left h1 {
                font-size: 44px;
            }
            .hero-right {
                min-height: 340px;
            }
            #services .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-img {
                flex: 0 0 50%;
                min-height: 280px;
            }
            .scenario-text {
                flex: 0 0 50%;
            }
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .testimonial-cards {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 959px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }
            section {
                padding-top: 80px;
                padding-bottom: 80px;
            }
            .section-h2 {
                font-size: 28px;
            }
            .nav-links {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            #hero .container {
                flex-direction: column;
            }
            .hero-left,
            .hero-right {
                flex: 0 0 100%;
                max-width: 100%;
            }
            .hero-left h1 {
                font-size: 36px;
            }
            .hero-right {
                min-height: 280px;
                width: 100%;
                margin-top: 24px;
            }
            .hero-geo-decor,
            .hero-geo-arc {
                display: none;
            }
            #advantages .advantages-grid {
                flex-direction: column;
            }
            .adv-card-top {
                flex: 0 0 100%;
            }
            .adv-card-bottom {
                flex: 0 0 100%;
            }
            #services .services-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .service-card {
                height: 340px;
            }
            #scenarios .scenario-row,
            #scenarios .scenario-row.reverse {
                flex-direction: column;
            }
            .scenario-img {
                flex: 0 0 auto;
                width: 100%;
                min-height: 220px;
            }
            .scenario-text {
                flex: 0 0 auto;
                width: 100%;
            }
            .scenario-watermark {
                font-size: 52px;
                top: -16px;
            }
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-item .data-number {
                font-size: 36px;
            }
            .testimonial-cards {
                grid-template-columns: 1fr;
            }
            #pricing .pricing-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .pricing-card.featured {
                transform: translateY(0);
                order: -1;
            }
            .pricing-card.featured:hover {
                transform: translateY(-3px);
            }
            #cta {
                padding: 48px 0;
            }
            #cta h2 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            html {
                scroll-padding-top: var(--nav-height-mobile);
            }
        }

        @media (max-width: 639px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            section {
                padding-top: 60px;
                padding-bottom: 60px;
            }
            .section-h2 {
                font-size: 24px;
            }
            .section-subtitle {
                font-size: 14px;
            }
            #header {
                height: var(--nav-height-mobile);
            }
            .nav-brand {
                font-size: 18px;
            }
            .hero-left h1 {
                font-size: 28px;
                line-height: 1.2;
            }
            .hero-left .hero-subtitle {
                font-size: 15px;
            }
            .hero-btns {
                flex-direction: column;
                gap: 12px;
                align-items: stretch;
            }
            .hero-btns .btn-primary,
            .hero-btns .btn-outline {
                width: 100%;
                text-align: center;
            }
            .hero-right {
                min-height: 200px;
            }
            #services .services-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .service-card {
                height: auto;
                flex-direction: column;
            }
            .service-card-img {
                flex: 0 0 180px;
            }
            .adv-card {
                flex-direction: column;
                gap: 16px;
                padding: 24px;
            }
            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .data-item .data-number {
                font-size: 28px;
            }
            .data-item .data-suffix {
                font-size: 14px;
            }
            .logo-wall {
                gap: 16px;
                padding: 28px 0;
            }
            .logo-placeholder {
                width: 70px;
                height: 32px;
                font-size: 10px;
            }
            .testimonial-cards {
                grid-template-columns: 1fr;
            }
            #pricing .pricing-grid {
                grid-template-columns: 1fr;
            }
            #cta h2 {
                font-size: 20px;
            }
            #cta .btn-primary {
                width: 100%;
                font-size: 15px;
                padding: 14px 24px;
            }
            .faq-question {
                font-size: 15px;
            }
            .faq-answer-inner {
                font-size: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }