/* roulang page: index */
:root {
            --ocean: #008C8C;
            --coral: #FF6B4A;
            --rock: #2C3E50;
            --mist: #F4F8FC;
            --wattle: #FFB800;
            --white: #FFFFFF;
            --ocean-light: #00A8A8;
            --coral-light: #FF8A6E;
            --ocean-bg: #E6F7F7;
            --ocean-10: rgba(0, 140, 140, 0.10);
            --ocean-5: rgba(0, 140, 140, 0.05);
            --coral-10: rgba(255, 107, 74, 0.10);
            --wattle-15: rgba(255, 184, 0, 0.15);
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 16px 32px rgba(0, 0, 0, 0.12);
            --shadow-nav: 0 2px 20px rgba(0, 0, 0, 0.06);
            --radius-card: 16px;
            --radius-card-lg: 24px;
            --radius-badge: 8px;
            --radius-btn: 50px;
            --radius-input: 8px;
            --font-h1: 3rem;
            --font-h2: 2rem;
            --font-h3: 1.5rem;
            --font-body: 1rem;
            --font-sm: 0.875rem;
            --line-height-base: 1.6;
            --line-height-heading: 1.2;
            --transition-speed: 0.3s;
            --nav-height: 72px;
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: 'Source Han Sans SC', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: var(--font-body);
            line-height: var(--line-height-base);
            color: var(--rock);
            background-color: var(--white);
            overflow-x: hidden;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: 'Inter', 'Source Han Sans SC', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            font-weight: 700;
            line-height: var(--line-height-heading);
            color: var(--rock);
            margin: 0 0 0.5em 0;
        }
        h1 {
            font-size: var(--font-h1);
            font-weight: 900;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: var(--font-h2);
            font-weight: 800;
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: var(--font-h3);
            font-weight: 700;
        }
        p {
            margin: 0 0 1em 0;
            max-width: 700px;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-speed), background var(--transition-speed), transform var(--transition-speed), box-shadow var(--transition-speed);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            transition: all var(--transition-speed);
        }
        input,
        textarea {
            font-family: inherit;
            font-size: var(--font-body);
            outline: none;
            transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
        }
        input:focus,
        textarea:focus {
            border-color: var(--coral) !important;
            box-shadow: 0 0 0 3px rgba(255, 107, 74, 0.15) !important;
            outline: none;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 767px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            :root {
                --font-h1: 2.2rem;
                --font-h2: 1.6rem;
                --font-h3: 1.25rem;
            }
        }
        @media (max-width: 479px) {
            :root {
                --font-h1: 1.8rem;
                --font-h2: 1.4rem;
                --font-h3: 1.15rem;
            }
            .container {
                padding-left: 12px;
                padding-right: 12px;
            }
        }

        /* ========== NAVIGATION ========== */
        #mainNav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-nav);
            display: flex;
            align-items: center;
            transition: all var(--transition-speed);
        }
        #mainNav.scrolled {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.10);
        }
        #mainNav .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .nav-logo {
            font-family: 'Inter', 'Source Han Sans SC', 'Noto Sans SC', 'PingFang SC', sans-serif;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--rock);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            z-index: 1001;
        }
        .nav-logo .logo-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--ocean), var(--coral));
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: inline-block;
            padding: 10px 16px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--rock);
            white-space: nowrap;
            transition: all var(--transition-speed);
        }
        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--ocean);
            background: var(--ocean-10);
        }
        .nav-cta-btn {
            display: inline-block;
            padding: 11px 24px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            white-space: nowrap;
            background: linear-gradient(135deg, var(--ocean), var(--coral));
            color: #fff !important;
            box-shadow: 0 4px 14px rgba(0, 140, 140, 0.25);
            transition: all var(--transition-speed);
        }
        .nav-cta-btn:hover {
            background: linear-gradient(135deg, var(--coral), var(--ocean));
            box-shadow: 0 6px 20px rgba(255, 107, 74, 0.35);
            transform: translateY(-1px);
        }
        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            z-index: 1001;
            padding: 8px;
            background: transparent;
            border: none;
        }
        .nav-hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            border-radius: 2px;
            background: var(--rock);
            transition: all var(--transition-speed);
            transform-origin: center;
        }
        .nav-hamburger.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-hamburger.open span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .nav-hamburger.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 767px) {
            .nav-hamburger {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 12px;
                opacity: 0;
                pointer-events: none;
                transform: translateY(-30px);
                transition: all 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
                z-index: 1000;
            }
            .nav-links.open {
                opacity: 1;
                pointer-events: auto;
                transform: translateY(0);
            }
            .nav-links li a {
                font-size: 1.2rem;
                padding: 14px 28px;
                text-align: center;
            }
            .nav-cta-btn {
                font-size: 1.1rem;
                padding: 14px 32px;
                margin-top: 8px;
            }
        }

        /* ========== HERO ========== */
        #hero {
            padding-top: calc(var(--nav-height) + 60px);
            padding-bottom: 80px;
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: var(--white);
            overflow: hidden;
        }
        #hero::before {
            content: '';
            position: absolute;
            top: -200px;
            right: -150px;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 140, 140, 0.04) 0%, transparent 70%);
            pointer-events: none;
            animation: heroGlow 8s ease-in-out infinite alternate;
        }
        #hero::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -80px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 107, 74, 0.04) 0%, transparent 70%);
            pointer-events: none;
            animation: heroGlow2 10s ease-in-out infinite alternate;
        }
        @keyframes heroGlow {
            0% {
                transform: translate(0, 0) scale(1);
            }
            100% {
                transform: translate(-40px, 30px) scale(1.15);
            }
        }
        @keyframes heroGlow2 {
            0% {
                transform: translate(0, 0) scale(1);
            }
            100% {
                transform: translate(30px, -20px) scale(1.2);
            }
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .hero-left {
            animation: fadeInUp 0.8s ease-out;
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 50px;
            background: var(--wattle-15);
            color: #b8860b;
            font-weight: 600;
            font-size: 0.85rem;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .hero-title {
            font-size: var(--font-h1);
            font-weight: 900;
            color: var(--rock);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            line-height: 1.15;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--ocean), var(--coral));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            color: transparent;
        }
        .hero-subtitle {
            font-size: 1.1rem;
            color: #5a6c7d;
            margin-bottom: 32px;
            max-width: 500px;
            line-height: 1.7;
        }
        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 15px 36px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 1rem;
            background: linear-gradient(135deg, var(--ocean), var(--coral));
            color: #fff;
            box-shadow: 0 6px 20px rgba(0, 140, 140, 0.3);
            transition: all var(--transition-speed);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--coral), var(--ocean));
            box-shadow: 0 10px 28px rgba(255, 107, 74, 0.4);
            transform: translateY(-2px);
            filter: saturate(1.2);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 15px 36px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid var(--ocean);
            color: var(--ocean);
            background: transparent;
            transition: all var(--transition-speed);
            cursor: pointer;
        }
        .btn-outline:hover {
            background: var(--ocean-10);
            border-color: var(--ocean-light);
            color: var(--ocean-light);
            transform: translateY(-2px);
        }
        .hero-right {
            position: relative;
            animation: fadeInUp 1s ease-out 0.2s both;
        }
        .hero-img-wrapper {
            position: relative;
            border-radius: var(--radius-card-lg);
            overflow: visible;
            transform: rotate(-1.5deg);
            transition: transform var(--transition-speed);
        }
        .hero-img-wrapper:hover {
            transform: rotate(0deg);
        }
        .hero-img-glow {
            position: absolute;
            inset: -6px;
            border-radius: calc(var(--radius-card-lg) + 6px);
            background: linear-gradient(135deg, var(--ocean), var(--coral), var(--wattle));
            z-index: -1;
            opacity: 0.6;
            filter: blur(18px);
            animation: glowPulse 3s ease-in-out infinite alternate;
        }
        @keyframes glowPulse {
            0% {
                opacity: 0.4;
                filter: blur(14px);
            }
            100% {
                opacity: 0.7;
                filter: blur(22px);
            }
        }
        .hero-img-wrapper img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            border-radius: var(--radius-card-lg);
            box-shadow: var(--shadow-card-hover);
            display: block;
        }

        @media (max-width: 1023px) {
            .hero-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero-img-wrapper img {
                height: 340px;
            }
        }
        @media (max-width: 767px) {
            #hero {
                padding-top: calc(var(--nav-height) + 32px);
                padding-bottom: 48px;
                min-height: auto;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 36px;
                text-align: center;
            }
            .hero-left {
                order: 1;
            }
            .hero-right {
                order: 2;
            }
            .hero-subtitle {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-btns {
                justify-content: center;
            }
            .hero-img-wrapper {
                transform: rotate(0deg);
            }
            .hero-img-wrapper img {
                height: 260px;
                border-radius: var(--radius-card);
            }
            .hero-img-glow {
                border-radius: calc(var(--radius-card) + 6px);
            }
            .btn-primary,
            .btn-outline {
                padding: 13px 28px;
                font-size: 0.95rem;
            }
        }
        @media (max-width: 479px) {
            .hero-img-wrapper img {
                height: 200px;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary,
            .btn-outline {
                width: 100%;
                justify-content: center;
                max-width: 280px;
            }
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--section-mobile) 0;
        }
        @media (min-width: 768px) {
            .section {
                padding: 80px 0;
            }
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            margin-bottom: 12px;
        }
        .section-header .section-subtitle {
            color: #5a6c7d;
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .section-eyebrow {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--ocean);
            margin-bottom: 10px;
            background: var(--ocean-10);
            padding: 5px 14px;
            border-radius: 50px;
        }

        /* ========== FEATURES ========== */
        #features {
            background: var(--mist);
            position: relative;
            overflow: hidden;
        }
        #features::before {
            content: '';
            position: absolute;
            top: -120px;
            left: 50%;
            transform: translateX(-50%);
            width: 800px;
            height: 800px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 184, 0, 0.04) 0%, transparent 70%);
            pointer-events: none;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            position: relative;
            z-index: 2;
        }
        .feature-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 36px 28px 28px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-speed);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .feature-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(135deg, var(--ocean), var(--coral));
            border-radius: 4px 4px 0 0;
            opacity: 0;
            transition: opacity var(--transition-speed);
        }
        .feature-card:hover::after {
            opacity: 1;
        }
        .feature-icon-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--ocean), var(--coral));
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            flex-shrink: 0;
            box-shadow: 0 6px 16px rgba(0, 140, 140, 0.2);
        }
        .feature-icon-circle i {
            font-size: 1.5rem;
            color: #fff;
        }
        .feature-card h3 {
            margin-bottom: 8px;
        }
        .feature-card p {
            color: #5a6c7d;
            font-size: 0.95rem;
            flex-grow: 1;
            max-width: 100%;
        }
        .feature-badge {
            display: inline-block;
            margin-top: 14px;
            padding: 8px 18px;
            border-radius: var(--radius-badge);
            background: var(--wattle);
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        @media (max-width: 1023px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 767px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .feature-card {
                padding: 28px 20px 22px;
            }
        }

        /* ========== SERVICES ========== */
        #services {
            background: #fff;
            position: relative;
        }
        .services-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: stretch;
        }
        .service-column {
            background: #fff;
            border-radius: var(--radius-card-lg);
            padding: 40px 32px;
            box-shadow: var(--shadow-card);
            border: 1px solid #eef2f7;
            transition: all var(--transition-speed);
            position: relative;
            overflow: hidden;
        }
        .service-column:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: transparent;
        }
        .service-column.featured {
            border: 2px solid var(--ocean);
            box-shadow: 0 12px 32px rgba(0, 140, 140, 0.10);
        }
        .service-column.featured::before {
            content: '推荐方案';
            position: absolute;
            top: 20px;
            right: -32px;
            background: linear-gradient(135deg, var(--ocean), var(--coral));
            color: #fff;
            font-size: 0.78rem;
            font-weight: 700;
            padding: 5px 40px;
            transform: rotate(45deg);
            letter-spacing: 0.04em;
        }
        .service-column h3 {
            margin-bottom: 6px;
            font-size: 1.4rem;
        }
        .service-column .service-price-hint {
            font-size: 0.85rem;
            color: #7a8a9a;
            margin-bottom: 20px;
        }
        .service-feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 20px 0;
        }
        .service-feature-list li {
            padding: 10px 0;
            border-bottom: 1px solid #f0f4f8;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.95rem;
            color: #3d5060;
        }
        .service-feature-list li i {
            color: var(--ocean);
            margin-top: 3px;
            flex-shrink: 0;
        }
        .service-feature-list li.highlight-row {
            background: var(--ocean-5);
            margin: 0 -16px;
            padding-left: 16px;
            padding-right: 16px;
            border-radius: 6px;
            font-weight: 600;
            color: var(--rock);
        }
        .service-column .btn-outline {
            width: 100%;
            justify-content: center;
            margin-top: 8px;
        }
        .service-column.featured .btn-primary {
            width: 100%;
            justify-content: center;
            margin-top: 8px;
        }

        @media (max-width: 767px) {
            .services-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .service-column {
                padding: 28px 20px;
            }
            .service-column.featured::before {
                top: 14px;
                right: -38px;
                font-size: 0.7rem;
                padding: 4px 36px;
            }
        }

        /* ========== CASES ========== */
        #cases {
            background: var(--mist);
            position: relative;
        }
        .cases-masonry {
            columns: 3;
            column-gap: 24px;
        }
        @media (max-width: 1023px) {
            .cases-masonry {
                columns: 2;
                column-gap: 18px;
            }
        }
        @media (max-width: 767px) {
            .cases-masonry {
                columns: 1;
                column-gap: 0;
            }
        }
        .case-card {
            break-inside: avoid;
            margin-bottom: 24px;
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-speed);
            cursor: default;
            display: block;
        }
        .case-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .case-card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 11;
            background: #e8edf2;
        }
        .case-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .case-card:hover .case-card-img-wrap img {
            transform: scale(1.06);
        }
        .case-card-overlay {
            position: absolute;
            inset: 0;
            background: rgba(0, 0, 0, 0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            transition: opacity var(--transition-speed);
            pointer-events: none;
        }
        .case-card:hover .case-card-overlay {
            opacity: 1;
        }
        .case-card-overlay .view-btn {
            display: inline-block;
            padding: 10px 22px;
            border-radius: 50px;
            background: #fff;
            color: var(--rock);
            font-weight: 600;
            font-size: 0.9rem;
            pointer-events: none;
        }
        .case-card-body {
            padding: 18px 20px 20px;
        }
        .case-card-body .case-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 4px;
            background: var(--ocean-10);
            color: var(--ocean);
            margin-bottom: 8px;
            letter-spacing: 0.03em;
        }
        .case-card-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0 0 6px 0;
            color: var(--rock);
        }
        .case-card-body p {
            font-size: 0.85rem;
            color: #6b7d8e;
            margin: 0;
            line-height: 1.5;
            max-width: 100%;
        }

        /* ========== FAQ ========== */
        #faq {
            background: #fff;
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid #e8eef4;
            border-radius: var(--radius-card);
            margin-bottom: 14px;
            overflow: hidden;
            transition: all var(--transition-speed);
            background: #fff;
        }
        .faq-item.active {
            border-color: #c8e6e6;
            background: #f9fdfd;
            box-shadow: 0 4px 16px rgba(0, 140, 140, 0.06);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 22px;
            cursor: pointer;
            background: transparent;
            border: none;
            text-align: left;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--rock);
            transition: all var(--transition-speed);
            font-family: inherit;
            line-height: 1.4;
        }
        .faq-q-badge {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--ocean), var(--coral));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            letter-spacing: 0;
        }
        .faq-item.active .faq-q-badge {
            background: var(--wattle);
            color: #fff;
        }
        .faq-icon {
            margin-left: auto;
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #eef3f8;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-speed);
            font-size: 0.8rem;
            color: #6b7d8e;
        }
        .faq-item.active .faq-icon {
            background: var(--ocean);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s ease, padding 0.3s ease;
            padding: 0 22px 0 72px;
            font-size: 0.95rem;
            color: #5a6c7d;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 260px;
            padding: 0 22px 20px 72px;
        }

        @media (max-width: 767px) {
            .faq-question {
                padding: 16px 14px;
                font-size: 0.95rem;
                gap: 10px;
            }
            .faq-answer {
                padding: 0 14px 0 56px;
            }
            .faq-item.active .faq-answer {
                padding: 0 14px 16px 56px;
            }
            .faq-q-badge {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
            }
        }

        /* ========== CONTACT ========== */
        #contact {
            position: relative;
            background: linear-gradient(135deg, rgba(0, 140, 140, 0.04), rgba(255, 107, 74, 0.04), rgba(255, 184, 0, 0.03));
            overflow: hidden;
        }
        #contact::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 140, 140, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 44px;
            align-items: start;
            position: relative;
            z-index: 2;
        }
        .contact-form-wrap {
            background: #fff;
            border-radius: var(--radius-card-lg);
            padding: 36px 32px;
            box-shadow: var(--shadow-card);
        }
        .contact-form-wrap h3 {
            margin-bottom: 20px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 6px;
            font-size: 0.9rem;
            color: var(--rock);
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 13px 16px;
            border: 1.5px solid #dde5ed;
            border-radius: var(--radius-input);
            font-size: 0.95rem;
            background: #fafcfd;
            transition: all var(--transition-speed);
            color: var(--rock);
        }
        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--coral);
            box-shadow: 0 0 0 3px rgba(255, 107, 74, 0.12);
            background: #fff;
            outline: none;
        }
        .btn-submit {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 15px 40px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 1rem;
            background: linear-gradient(135deg, var(--ocean), var(--coral));
            color: #fff;
            border: none;
            cursor: pointer;
            box-shadow: 0 6px 20px rgba(0, 140, 140, 0.25);
            transition: all var(--transition-speed);
            width: 100%;
            justify-content: center;
        }
        .btn-submit:hover {
            background: linear-gradient(135deg, var(--coral), var(--ocean));
            box-shadow: 0 10px 28px rgba(255, 107, 74, 0.35);
            transform: translateY(-2px);
            filter: saturate(1.2);
        }
        .contact-info-wrap {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .contact-info-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: flex-start;
            gap: 14px;
            transition: all var(--transition-speed);
        }
        .contact-info-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .contact-info-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--ocean-10);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--ocean);
            font-size: 1.1rem;
        }
        .contact-info-card .info-text h4 {
            margin: 0 0 4px 0;
            font-size: 0.95rem;
            font-weight: 700;
        }
        .contact-info-card .info-text p {
            margin: 0;
            font-size: 0.9rem;
            color: #5a6c7d;
            max-width: 100%;
        }
        .contact-image-card {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .contact-image-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .contact-image-card .img-overlay-text {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 20px 24px;
            background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            text-align: center;
            letter-spacing: 0.03em;
        }

        @media (max-width: 767px) {
            .contact-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .contact-form-wrap {
                padding: 24px 18px;
            }
            .contact-info-card {
                padding: 20px 16px;
            }
            .btn-submit {
                padding: 14px 32px;
            }
        }

        /* ========== FOOTER ========== */
        #footer {
            background: #1a2633;
            color: #b0bec5;
            padding: 40px 0;
            text-align: center;
            position: relative;
        }
        #footer .container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
        }
        #footer .footer-brand {
            font-family: 'Inter', 'Source Han Sans SC', 'Noto Sans SC', sans-serif;
            font-weight: 800;
            font-size: 1.2rem;
            color: #fff;
            letter-spacing: 0.03em;
        }
        #footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        #footer .footer-links li a {
            color: #90a4ae;
            font-size: 0.9rem;
            transition: color var(--transition-speed);
        }
        #footer .footer-links li a:hover {
            color: #fff;
        }
        #footer .footer-copy {
            font-size: 0.82rem;
            color: #78909c;
            margin-top: 4px;
        }
        .back-to-top {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--ocean), var(--coral));
            color: #fff;
            font-size: 1.1rem;
            cursor: pointer;
            border: none;
            position: fixed;
            bottom: 28px;
            right: 28px;
            z-index: 900;
            box-shadow: 0 6px 18px rgba(0, 140, 140, 0.3);
            opacity: 0;
            pointer-events: none;
            transform: translateY(20px);
            transition: all var(--transition-speed);
        }
        .back-to-top.visible {
            opacity: 1;
            pointer-events: auto;
            transform: translateY(0);
        }
        .back-to-top:hover {
            background: linear-gradient(135deg, var(--coral), var(--ocean));
            box-shadow: 0 10px 24px rgba(255, 107, 74, 0.4);
            transform: translateY(-3px);
        }

        @media (max-width: 767px) {
            #footer {
                padding: 28px 0;
            }
            .back-to-top {
                bottom: 20px;
                right: 16px;
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }