/* roulang page: index */
:root {
            --color-primary: #3A7CA5;
            --color-primary-deep: #2C6382;
            --color-accent: #5F8B6B;
            --color-accent-light: #7BA889;
            --color-gray: #4B5563;
            --color-gray-light: #6B7280;
            --color-bg: #FFFFFF;
            --color-bg-alt: #F7F9FB;
            --color-footer: #2B3A42;
            --color-border: #E5E7EB;
            --color-white: #FFFFFF;
            --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.03);
            --shadow-card-hover: 0 12px 24px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.05);
            --shadow-nav: 0 1px 0 rgba(0, 0, 0, 0.06);
            --radius-lg: 16px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --font-heading: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            --font-body: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
            --nav-height-mobile: 60px;
            --section-gap: 100px;
            --section-gap-mobile: 60px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::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-body);
            font-size: 16px;
            line-height: 1.6;
            color: var(--color-gray);
            background: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            :root {
                --section-gap: var(--section-gap-mobile);
                scroll-padding-top: var(--nav-height-mobile);
            }
            html {
                scroll-padding-top: var(--nav-height-mobile);
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--color-white);
            box-shadow: var(--shadow-nav);
            display: flex;
            align-items: center;
            transition: background var(--transition-fast);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 22px;
            color: #1F2937;
            letter-spacing: -0.02em;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            flex-shrink: 0;
        }

        .logo-icon svg {
            width: 36px;
            height: 36px;
        }

        .logo-text {
            line-height: 1;
        }

        .logo-text .brand-name {
            display: block;
            font-size: 20px;
            color: #1F2937;
            letter-spacing: -0.02em;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-list a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-gray);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
            transition: width var(--transition-smooth);
        }

        .nav-list a:hover,
        .nav-list a.active {
            color: var(--color-primary);
        }

        .nav-list a:hover::after,
        .nav-list a.active::after {
            width: 100%;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            z-index: 1100;
            background: none;
            border: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: #1F2937;
            border-radius: 2px;
            transition: all var(--transition-smooth);
            transform-origin: center;
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--color-white);
            z-index: 1050;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-smooth);
        }

        .mobile-nav-overlay.open {
            display: flex;
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-nav-overlay a {
            font-size: 20px;
            font-weight: 600;
            color: #1F2937;
            padding: 10px 20px;
            transition: color var(--transition-fast);
        }

        .mobile-nav-overlay a:hover {
            color: var(--color-primary);
        }

        @media (max-width: 768px) {
            .site-header {
                height: var(--nav-height-mobile);
            }
            .site-header .container {
                padding: 0 16px;
            }
            .nav-list {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .logo-link {
                font-size: 18px;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
            }
            .logo-icon svg {
                width: 30px;
                height: 30px;
            }
            .logo-text .brand-name {
                font-size: 17px;
            }
        }

        /* ========== HERO ========== */
        .hero-section {
            padding-top: calc(var(--nav-height) + 50px);
            padding-bottom: 80px;
            background: var(--color-bg);
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -200px;
            width: 700px;
            height: 700px;
            background: radial-gradient(ellipse at center, rgba(58, 124, 165, 0.04) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -120px;
            width: 500px;
            height: 500px;
            background: radial-gradient(ellipse at center, rgba(95, 139, 107, 0.03) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .hero-live-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(95, 139, 107, 0.08);
            padding: 6px 14px;
            border-radius: 20px;
            width: fit-content;
            letter-spacing: 0.01em;
        }

        .live-dot {
            width: 8px;
            height: 8px;
            background: var(--color-accent);
            border-radius: 50%;
            animation: pulse-dot 1.6s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(95, 139, 107, 0.5);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(95, 139, 107, 0);
            }
        }

        .hero-content h1 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 40px;
            line-height: 1.25;
            color: #1F2937;
            letter-spacing: -0.02em;
            max-width: 500px;
        }

        .hero-content h1 .highlight {
            color: var(--color-primary);
            position: relative;
        }

        .hero-content .hero-subtitle {
            font-size: 18px;
            line-height: 1.6;
            color: var(--color-gray);
            max-width: 440px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 4px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            font-size: 16px;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            transition: all var(--transition-smooth);
            min-height: 48px;
            white-space: nowrap;
            cursor: pointer;
            letter-spacing: 0.01em;
        }

        .btn-primary {
            background: var(--color-primary);
            color: var(--color-white);
            box-shadow: 0 2px 8px rgba(58, 124, 165, 0.25);
        }

        .btn-primary:hover {
            background: var(--color-primary-deep);
            box-shadow: 0 6px 20px rgba(44, 99, 130, 0.35);
            transform: translateY(-2px);
        }

        .btn-ghost {
            background: transparent;
            color: var(--color-primary);
            padding: 14px 20px;
            border-bottom: 2px solid transparent;
            border-radius: 0;
            min-height: 48px;
        }

        .btn-ghost:hover {
            border-bottom-color: var(--color-primary);
            color: var(--color-primary-deep);
        }

        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .hero-image-wrapper {
            width: 100%;
            max-width: 520px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
            aspect-ratio: 4 / 3;
            position: relative;
        }

        .hero-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .hero-stats-mini {
            display: flex;
            gap: 24px;
            margin-top: 8px;
            flex-wrap: wrap;
        }

        .hero-stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-stat-num {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 28px;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            line-height: 1.1;
        }

        .hero-stat-label {
            font-size: 13px;
            color: var(--color-gray-light);
        }

        @media (max-width: 1024px) {
            .hero-grid {
                gap: 32px;
            }
            .hero-content h1 {
                font-size: 32px;
                line-height: 1.3;
            }
            .hero-content .hero-subtitle {
                font-size: 16px;
            }
            .hero-stat-num {
                font-size: 24px;
            }
        }

        @media (max-width: 768px) {
            .hero-section {
                padding-top: calc(var(--nav-height-mobile) + 32px);
                padding-bottom: 50px;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-content {
                order: 1;
                text-align: center;
                align-items: center;
            }
            .hero-content h1 {
                font-size: 28px;
                line-height: 1.35;
                max-width: 100%;
            }
            .hero-content .hero-subtitle {
                font-size: 16px;
                max-width: 100%;
                text-align: center;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-live-badge {
                margin: 0 auto;
            }
            .hero-stats-mini {
                justify-content: center;
            }
            .hero-visual {
                order: 0;
            }
            .hero-image-wrapper {
                max-width: 100%;
                aspect-ratio: 16 / 10;
            }
            .hero-stat-num {
                font-size: 22px;
            }
            .hero-section::before,
            .hero-section::after {
                display: none;
            }
            .btn {
                padding: 12px 22px;
                font-size: 15px;
                min-height: 44px;
            }
        }

        /* ========== SECTION COMMONS ========== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-alt {
            background: var(--color-bg-alt);
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 28px;
            line-height: 1.3;
            color: #1F2937;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }

        .section-header .section-subtitle {
            font-size: 16px;
            color: var(--color-gray-light);
            max-width: 520px;
            margin: 0 auto;
            line-height: 1.5;
        }

        @media (max-width: 768px) {
            .section-header h2 {
                font-size: 22px;
                line-height: 1.35;
            }
            .section-header .section-subtitle {
                font-size: 15px;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ========== HIGHLIGHTS - 非对称网格 ========== */
        .highlights-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            grid-template-rows: auto auto;
            gap: 24px;
        }

        .highlight-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            gap: 16px;
            position: relative;
            overflow: hidden;
        }

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

        .highlight-card.featured {
            grid-row: span 2;
            background: linear-gradient(160deg, #ffffff 60%, rgba(58, 124, 165, 0.03) 100%);
        }

        .highlight-icon {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            flex-shrink: 0;
            transition: transform var(--transition-smooth);
        }

        .highlight-card:hover .highlight-icon {
            transform: scale(1.08);
        }

        .highlight-icon.accent {
            background: rgba(95, 139, 107, 0.1);
            color: var(--color-accent);
        }
        .highlight-icon.primary {
            background: rgba(58, 124, 165, 0.1);
            color: var(--color-primary);
        }

        .highlight-icon svg {
            width: 28px;
            height: 28px;
        }

        .highlight-card h3 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 20px;
            line-height: 1.3;
            color: #1F2937;
            letter-spacing: -0.02em;
        }

        .highlight-card p {
            font-size: 14px;
            line-height: 1.6;
            color: var(--color-gray);
            flex-grow: 1;
        }

        .highlight-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(95, 139, 107, 0.08);
            padding: 4px 10px;
            border-radius: 4px;
            width: fit-content;
            letter-spacing: 0.02em;
        }

        @media (max-width: 1024px) {
            .highlights-grid {
                grid-template-columns: 1fr 1fr;
                grid-template-rows: auto;
            }
            .highlight-card.featured {
                grid-row: span 1;
                grid-column: span 2;
            }
        }

        @media (max-width: 768px) {
            .highlights-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .highlight-card.featured {
                grid-column: span 1;
            }
            .highlight-card {
                padding: 24px 20px;
            }
            .highlight-card h3 {
                font-size: 18px;
            }
        }

        /* ========== CASES 瀑布流 ========== */
        .cases-masonry {
            columns: 3;
            column-gap: 24px;
            break-inside: avoid;
        }

        .case-card {
            break-inside: avoid;
            margin-bottom: 24px;
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: inline-block;
            width: 100%;
        }

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

        .case-card-image {
            width: 100%;
            overflow: hidden;
            position: relative;
            aspect-ratio: auto;
            transition: transform var(--transition-smooth);
        }

        .case-card:hover .case-card-image img {
            transform: scale(1.03);
        }

        .case-card-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform var(--transition-smooth);
        }

        .case-card-body {
            padding: 18px 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .case-card-body h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 17px;
            line-height: 1.3;
            color: #1F2937;
            letter-spacing: -0.01em;
        }

        .case-card-body p {
            font-size: 13px;
            line-height: 1.5;
            color: var(--color-gray-light);
        }

        .case-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            color: var(--color-primary);
            background: rgba(58, 124, 165, 0.08);
            padding: 3px 10px;
            border-radius: 4px;
            width: fit-content;
            letter-spacing: 0.02em;
        }

        @media (max-width: 1024px) {
            .cases-masonry {
                columns: 2;
                column-gap: 16px;
            }
            .case-card {
                margin-bottom: 16px;
            }
        }

        @media (max-width: 768px) {
            .cases-masonry {
                columns: 1;
                column-gap: 0;
            }
            .case-card {
                margin-bottom: 16px;
                border-radius: 12px;
            }
            .case-card-body h4 {
                font-size: 15px;
            }
        }

        /* ========== 方案对比 ========== */
        .comparison-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: stretch;
        }

        .plan-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            gap: 18px;
            transition: all var(--transition-smooth);
            border: 2px solid transparent;
            position: relative;
        }

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

        .plan-card.recommended {
            border-color: var(--color-primary);
            box-shadow: 0 8px 28px rgba(58, 124, 165, 0.12), 0 2px 6px rgba(0, 0, 0, 0.04);
            transform: scale(1.03);
        }

        .plan-card.recommended:hover {
            transform: scale(1.03) translateY(-4px);
        }

        .plan-badge {
            position: absolute;
            top: -13px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--color-accent);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 6px 18px;
            border-radius: 20px;
            letter-spacing: 0.03em;
            white-space: nowrap;
        }

        .plan-card h3 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 20px;
            color: #1F2937;
            text-align: center;
            letter-spacing: -0.02em;
        }

        .plan-price {
            text-align: center;
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 36px;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            line-height: 1;
        }

        .plan-price span {
            font-size: 16px;
            font-weight: 500;
            color: var(--color-gray-light);
        }

        .plan-features {
            display: flex;
            flex-direction: column;
            gap: 12px;
            flex-grow: 1;
        }

        .plan-feature {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--color-gray);
            line-height: 1.4;
        }

        .plan-feature .check-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            color: var(--color-accent);
            margin-top: 1px;
        }

        .plan-card .btn {
            width: 100%;
            margin-top: auto;
        }

        .plan-card .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
            border-radius: var(--radius-md);
        }

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

        @media (max-width: 1024px) {
            .comparison-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .plan-card.recommended {
                grid-column: span 2;
                transform: scale(1);
            }
            .plan-card.recommended:hover {
                transform: scale(1) translateY(-4px);
            }
        }

        @media (max-width: 768px) {
            .comparison-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .plan-card.recommended {
                grid-column: span 1;
            }
            .plan-card {
                padding: 24px 20px;
            }
            .plan-price {
                font-size: 30px;
            }
            .plan-card h3 {
                font-size: 18px;
            }
        }

        /* ========== 联系/CTA ========== */
        .contact-wrapper {
            background: var(--color-white);
            border-radius: 24px;
            box-shadow: var(--shadow-card);
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            overflow: hidden;
            max-width: 900px;
            margin: 0 auto;
        }

        .contact-info-side {
            background: linear-gradient(160deg, #3A7CA5 0%, #2C6382 100%);
            padding: 40px 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 20px;
            color: #fff;
        }

        .contact-info-side h2 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 26px;
            line-height: 1.3;
            letter-spacing: -0.02em;
            color: #fff;
        }

        .contact-info-side p {
            font-size: 15px;
            line-height: 1.6;
            opacity: 0.9;
            color: rgba(255, 255, 255, 0.9);
        }

        .contact-info-detail {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
        }

        .contact-form-side {
            padding: 40px 32px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .form-group label {
            font-size: 13px;
            font-weight: 600;
            color: #374151;
            letter-spacing: 0.01em;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 14px;
            border: 1.5px solid var(--color-border);
            border-radius: var(--radius-sm);
            font-size: 15px;
            color: #1F2937;
            background: var(--color-bg-alt);
            transition: all var(--transition-fast);
            resize: vertical;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--color-primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(58, 124, 165, 0.08);
            outline: none;
        }

        .form-group textarea {
            min-height: 100px;
        }

        .btn-submit {
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            padding: 14px 24px;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: all var(--transition-smooth);
            width: 100%;
            min-height: 48px;
            letter-spacing: 0.01em;
        }

        .btn-submit:hover {
            background: var(--color-primary-deep);
            box-shadow: 0 6px 20px rgba(44, 99, 130, 0.3);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .contact-wrapper {
                grid-template-columns: 1fr;
                border-radius: 16px;
                max-width: 100%;
            }
            .contact-info-side {
                padding: 28px 20px;
                border-radius: 16px 16px 0 0;
            }
            .contact-info-side h2 {
                font-size: 22px;
            }
            .contact-form-side {
                padding: 24px 20px;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            max-width: 800px;
            margin: 0 auto;
        }

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

        .faq-item details {
            display: block;
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            cursor: pointer;
            font-family: var(--font-heading);
            font-weight: 600;
            font-size: 18px;
            color: #1F2937;
            line-height: 1.4;
            letter-spacing: -0.01em;
            list-style: none;
            transition: color var(--transition-fast);
            gap: 16px;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(58, 124, 165, 0.08);
            color: var(--color-primary);
            transition: all var(--transition-smooth);
            font-size: 18px;
            font-weight: 600;
            line-height: 1;
        }

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

        .faq-answer {
            padding: 0 0 20px 0;
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-gray);
            animation: fadeInDown 0.3s ease;
        }

        @keyframes fadeInDown {
            from {
                opacity: 0;
                transform: translateY(-8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @media (max-width: 768px) {
            .faq-item summary {
                font-size: 16px;
                padding: 16px 0;
            }
            .faq-answer {
                font-size: 15px;
                padding: 0 0 16px 0;
            }
            .faq-icon {
                width: 24px;
                height: 24px;
                font-size: 16px;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-footer);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-col h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 17px;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }

        .footer-col p,
        .footer-col a {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.7);
            display: block;
        }

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

        .footer-social-icons {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .social-icon-dot {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .social-icon-dot:hover {
            background: var(--color-primary);
            transform: translateY(-2px);
        }

        .social-icon-dot svg {
            width: 18px;
            height: 18px;
            fill: rgba(255, 255, 255, 0.8);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .site-footer {
                padding: 40px 0 20px;
            }
            .footer-col h4 {
                font-size: 15px;
            }
            .footer-col p,
            .footer-col a {
                font-size: 13px;
            }
        }

        /* ========== ANIMATIONS ========== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-on-scroll {
            animation: fadeInUp 0.7s ease forwards;
        }

        /* ========== ACCESSIBILITY ========== */
        :focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
        }