/* roulang page: index */
:root {
            --color-bg-base: #0D0D1A;
            --color-bg-card: #161625;
            --color-bg-card-elevated: #1C1C30;
            --color-primary: #8B5CF6;
            --color-primary-light: #A78BFA;
            --color-accent: #06B6D4;
            --color-accent-light: #22D3EE;
            --color-cta: #F97316;
            --color-cta-light: #FB923C;
            --color-success: #10B981;
            --color-text-primary: #FFFFFF;
            --color-text-sub: #E2E8F0;
            --color-text-body: #94A3B8;
            --color-text-muted: #64748B;
            --color-border: rgba(255, 255, 255, 0.06);
            --color-border-strong: #2A2A3E;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --radius-pill: 24px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.05);
            --shadow-nav: 0 1px 0 rgba(255, 255, 255, 0.06), 0 4px 24px rgba(0, 0, 0, 0.6);
            --shadow-btn-primary: 0 4px 16px rgba(139, 92, 246, 0.25);
            --shadow-btn-cta: 0 4px 20px rgba(249, 115, 22, 0.3);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
            --font-mono: "SF Mono", "Menlo", "Consolas", "DIN Alternate", monospace;
            --nav-height-pc: 64px;
            --nav-height-mobile: 56px;
            --section-pad-pc: 100px;
            --section-pad-tablet: 80px;
            --section-pad-mobile: 60px;
            --transition-fast: 0.2s ease-out;
            --transition-smooth: 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg-base);
            color: var(--color-text-body);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }

        body.menu-open {
            overflow: hidden;
            height: 100vh;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            transition: all var(--transition-fast);
        }
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== NAVIGATION ===== */
        .nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height-pc);
            background: rgba(13, 13, 26, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-nav);
            display: flex;
            align-items: center;
            padding: 0 24px;
            transition: background var(--transition-fast);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.02em;
        }
        .nav-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 6px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            position: relative;
            clip-path: polygon(50% 0%, 85% 25%, 85% 75%, 50% 100%, 15% 75%, 15% 25%);
        }
        .nav-logo-icon::after {
            content: '';
            width: 10px;
            height: 10px;
            background: #fff;
            border-radius: 50%;
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-body);
            position: relative;
            padding: 6px 0;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: width var(--transition-fast);
        }
        .nav-links a:hover,
        .nav-links a:focus-visible {
            color: var(--color-text-primary);
        }
        .nav-links a:hover::after,
        .nav-links a:focus-visible::after {
            width: 100%;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 8px 20px;
            background: var(--color-primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-md);
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }
        .nav-cta:hover {
            background: var(--color-primary-light);
            box-shadow: var(--shadow-btn-primary);
            transform: translateY(-1px);
        }
        .nav-cta:active {
            transform: scale(0.97);
        }

        /* Hamburger */
        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 28px;
            height: 22px;
            justify-content: center;
            align-items: center;
            z-index: 1001;
            cursor: pointer;
            background: none;
            border: none;
            padding: 4px;
        }
        .nav-hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: all 0.25s ease;
            transform-origin: center;
        }
        .nav-hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .nav-hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* Mobile menu */
        .nav-mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--color-bg-base);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 20px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.25s ease;
        }
        .nav-mobile-menu.active {
            opacity: 1;
            pointer-events: auto;
        }
        .nav-mobile-menu a {
            display: block;
            font-size: 18px;
            font-weight: 500;
            color: var(--color-text-sub);
            padding: 14px 32px;
            text-align: center;
            min-height: 48px;
            line-height: 1.4;
            transition: color var(--transition-fast);
            width: 100%;
            max-width: 300px;
        }
        .nav-mobile-menu a:hover {
            color: var(--color-text-primary);
        }
        .nav-mobile-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            background: var(--color-primary);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-md);
            min-height: 48px;
            transition: all var(--transition-fast);
        }
        .nav-mobile-cta:hover {
            background: var(--color-primary-light);
            box-shadow: var(--shadow-btn-primary);
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 18px;
            }
            .nav-links a {
                font-size: 13px;
            }
            .nav-cta {
                padding: 7px 16px;
                font-size: 13px;
            }
            .nav-logo {
                font-size: 19px;
            }
        }
        @media (max-width: 768px) {
            .nav-links,
            .nav-cta {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-mobile-menu {
                display: flex;
            }
            .nav {
                height: var(--nav-height-mobile);
                padding: 0 16px;
            }
            .nav-logo {
                font-size: 18px;
            }
            .nav-logo-icon {
                width: 28px;
                height: 28px;
            }
        }

        /* ===== HERO ===== */
        .hero {
            position: relative;
            min-height: 90vh;
            display: flex;
            align-items: center;
            padding-top: var(--nav-height-pc);
            overflow: hidden;
            background: linear-gradient(180deg, var(--color-bg-base) 0%, var(--color-bg-card) 100%);
        }
        .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            mix-blend-mode: overlay;
            pointer-events: none;
        }
        .hero-glow {
            position: absolute;
            top: -100px;
            right: -120px;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.12) 0%, rgba(6, 182, 212, 0.06) 40%, transparent 70%);
            pointer-events: none;
        }
        .hero-glow2 {
            position: absolute;
            bottom: -80px;
            left: -100px;
            width: 450px;
            height: 450px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.08) 0%, transparent 65%);
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            width: 100%;
        }
        .hero-content {
            max-width: 580px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(139, 92, 246, 0.15);
            border: 1px solid rgba(139, 92, 246, 0.25);
            color: var(--color-primary-light);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }
        .hero-badge-dot {
            width: 7px;
            height: 7px;
            background: var(--color-success);
            border-radius: 50%;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.6);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(16, 185, 129, 0);
            }
        }
        .hero h1 {
            font-size: 52px;
            font-weight: 700;
            color: var(--color-text-primary);
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            text-shadow: 0 0 60px rgba(139, 92, 246, 0.12);
        }
        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-accent-light) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-subtitle {
            font-size: 18px;
            color: var(--color-text-sub);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 460px;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 28px;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-md);
            min-height: 48px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
            text-align: center;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--color-primary-light);
            box-shadow: var(--shadow-btn-primary);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: scale(0.97);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-accent);
            border: 1px solid var(--color-accent);
        }
        .btn-outline:hover {
            background: rgba(6, 182, 212, 0.1);
            border-color: var(--color-accent-light);
            color: var(--color-accent-light);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: scale(0.97);
        }
        .btn-cta {
            background: var(--color-cta);
            color: #fff;
        }
        .btn-cta:hover {
            background: var(--color-cta-light);
            box-shadow: var(--shadow-btn-cta);
            transform: translateY(-2px);
        }
        .btn-cta:active {
            transform: scale(0.97);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
            min-height: 40px;
            border-radius: var(--radius-sm);
        }
        .btn-lg {
            padding: 16px 32px;
            font-size: 17px;
            min-height: 54px;
            border-radius: var(--radius-lg);
        }

        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-data-panel {
            background: var(--color-bg-card-elevated);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            padding: 28px 24px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            width: 100%;
            max-width: 440px;
            box-shadow: var(--shadow-card);
        }
        .hero-data-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 16px;
            text-align: center;
            border: 1px solid var(--color-border);
        }
        .hero-data-value {
            font-family: var(--font-mono);
            font-size: 36px;
            font-weight: 700;
            color: var(--color-accent);
            line-height: 1.1;
            letter-spacing: -0.01em;
        }
        .hero-data-value.green {
            color: var(--color-success);
        }
        .hero-data-label {
            font-size: 12px;
            color: var(--color-text-muted);
            margin-top: 4px;
            font-weight: 500;
            letter-spacing: 0.02em;
            text-transform: uppercase;
        }
        .hero-data-spark {
            font-size: 10px;
            color: var(--color-success);
            font-weight: 600;
            margin-top: 2px;
        }

        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 40px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero .container {
                gap: 32px;
            }
            .hero-data-value {
                font-size: 28px;
            }
        }
        @media (max-width: 768px) {
            .hero {
                min-height: 80vh;
                padding-top: var(--nav-height-mobile);
                text-align: center;
            }
            .hero .container {
                grid-template-columns: 1fr;
                gap: 36px;
                text-align: center;
            }
            .hero-content {
                max-width: 100%;
            }
            .hero-subtitle {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-buttons {
                justify-content: center;
            }
            .hero h1 {
                font-size: 34px;
            }
            .hero-visual {
                justify-content: center;
            }
            .hero-data-panel {
                max-width: 360px;
                padding: 20px 16px;
                gap: 10px;
            }
            .hero-data-value {
                font-size: 26px;
            }
            .hero-data-item {
                padding: 12px;
            }
        }
        @media (max-width: 520px) {
            .hero h1 {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
                gap: 12px;
            }
            .hero-buttons .btn {
                width: 100%;
                max-width: 280px;
            }
            .hero-data-panel {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
                padding: 14px 10px;
            }
            .hero-data-value {
                font-size: 22px;
            }
            .hero-data-item {
                padding: 10px;
            }
        }

        /* ===== SECTION COMMONS ===== */
        .section {
            padding: var(--section-pad-pc) 0;
            position: relative;
        }
        .section-alt {
            background: var(--color-bg-card);
        }
        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-header h2 {
            font-size: 36px;
            font-weight: 600;
            color: var(--color-text-primary);
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 17px;
            color: var(--color-text-body);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary-light);
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-pad-mobile) 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .section-header h2 {
                font-size: 27px;
            }
            .section-header p {
                font-size: 15px;
            }
        }

        /* ===== FEATURES TAB ===== */
        .features-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .features-image-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border);
            aspect-ratio: 4 / 3;
            position: relative;
            background: var(--color-bg-card-elevated);
        }
        .features-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: opacity var(--transition-smooth);
            position: absolute;
            top: 0;
            left: 0;
        }
        .features-image-wrap img.feature-img-hidden {
            opacity: 0;
            pointer-events: none;
        }
        .features-tabs {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .feature-tab {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 18px;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            position: relative;
            min-height: 48px;
            text-align: left;
            width: 100%;
            background: transparent;
            color: var(--color-text-body);
        }
        .feature-tab::before {
            content: '';
            position: absolute;
            left: 0;
            top: 12px;
            bottom: 12px;
            width: 3px;
            border-radius: 3px;
            background: transparent;
            transition: background var(--transition-smooth);
        }
        .feature-tab.active {
            background: var(--color-bg-card-elevated);
            border-color: var(--color-border);
            color: var(--color-text-primary);
        }
        .feature-tab.active::before {
            background: var(--color-primary);
        }
        .feature-tab:hover {
            background: rgba(255, 255, 255, 0.03);
            color: var(--color-text-sub);
        }
        .feature-tab.active:hover {
            background: var(--color-bg-card-elevated);
            color: var(--color-text-primary);
        }
        .feature-tab-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: rgba(139, 92, 246, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 18px;
            color: var(--color-primary-light);
        }
        .feature-tab.active .feature-tab-icon {
            background: rgba(139, 92, 246, 0.22);
            color: var(--color-primary-light);
        }
        .feature-tab-info h3 {
            font-size: 17px;
            font-weight: 600;
            color: inherit;
            margin-bottom: 3px;
            line-height: 1.3;
        }
        .feature-tab-info p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.5;
            margin: 0;
        }
        .feature-tab-metric {
            font-family: var(--font-mono);
            font-size: 13px;
            color: var(--color-accent);
            font-weight: 600;
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .features-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .features-tabs {
                flex-direction: row;
                overflow-x: auto;
                gap: 8px;
                padding-bottom: 8px;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: none;
            }
            .features-tabs::-webkit-scrollbar {
                display: none;
            }
            .feature-tab {
                flex-shrink: 0;
                flex-direction: column;
                align-items: center;
                text-align: center;
                padding: 14px 16px;
                min-width: 120px;
                gap: 8px;
                border-radius: var(--radius-lg);
            }
            .feature-tab::before {
                display: none;
            }
            .feature-tab.active {
                border-bottom: 3px solid var(--color-primary);
                border-radius: var(--radius-lg);
            }
            .feature-tab-icon {
                width: 34px;
                height: 34px;
                font-size: 16px;
            }
            .feature-tab-info h3 {
                font-size: 14px;
            }
            .feature-tab-info p {
                display: none;
            }
            .features-image-wrap {
                aspect-ratio: 16 / 10;
            }
        }

        /* ===== SCENARIOS ===== */
        .scenarios-scroll {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            scroll-snap-type: x proximity;
            -webkit-overflow-scrolling: touch;
            padding: 8px 4px 20px;
            scrollbar-width: none;
            position: relative;
        }
        .scenarios-scroll::-webkit-scrollbar {
            display: none;
        }
        .scenario-card {
            flex-shrink: 0;
            width: 300px;
            background: var(--color-bg-card-elevated);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            overflow: hidden;
            scroll-snap-align: start;
            transition: all var(--transition-fast);
            cursor: default;
        }
        .scenario-card.featured {
            width: 370px;
            box-shadow: 0 0 20px rgba(139, 92, 246, 0.12);
            border-color: rgba(139, 92, 246, 0.25);
        }
        .scenario-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
            border-color: rgba(255, 255, 255, 0.12);
        }
        .scenario-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }
        .scenario-card.featured .scenario-card-img {
            height: 210px;
        }
        .scenario-card-body {
            padding: 20px 18px;
        }
        .scenario-card-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .scenario-card-body p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .scenario-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .scenario-tag {
            font-size: 11px;
            font-weight: 500;
            color: var(--color-accent);
            background: rgba(6, 182, 212, 0.1);
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.02em;
        }
        .scenarios-nav {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            margin-top: 16px;
        }
        .scenarios-nav button {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-bg-card-elevated);
            border: 1px solid var(--color-border);
            color: var(--color-text-sub);
            font-size: 16px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
            min-width: 44px;
            min-height: 44px;
        }
        .scenarios-nav button:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }
        @media (max-width: 768px) {
            .scenario-card {
                width: 260px;
            }
            .scenario-card.featured {
                width: 290px;
            }
            .scenario-card-img {
                height: 150px;
            }
            .scenario-card.featured .scenario-card-img {
                height: 170px;
            }
            .scenario-card-body {
                padding: 14px;
            }
            .scenario-card-body h3 {
                font-size: 16px;
            }
            .scenarios-nav {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .scenario-card {
                width: 240px;
            }
            .scenario-card.featured {
                width: 265px;
            }
            .scenario-card-img {
                height: 130px;
            }
            .scenario-card.featured .scenario-card-img {
                height: 145px;
            }
        }

        /* ===== CASES ===== */
        .cases-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-bottom: 48px;
            text-align: center;
        }
        .cases-stat-value {
            font-family: var(--font-mono);
            font-size: 48px;
            font-weight: 700;
            color: var(--color-accent);
            line-height: 1.1;
            letter-spacing: -0.01em;
        }
        .cases-stat-value.green {
            color: var(--color-success);
        }
        .cases-stat-label {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-top: 6px;
            font-weight: 500;
        }
        .cases-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-bottom: 40px;
        }
        .case-card {
            background: var(--color-bg-card-elevated);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            padding: 24px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: all var(--transition-fast);
        }
        .case-card:hover {
            border-color: rgba(255, 255, 255, 0.14);
            box-shadow: var(--shadow-card);
        }
        .case-card-avatar {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.03em;
        }
        .case-card-content h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 6px;
            line-height: 1.3;
        }
        .case-card-content blockquote {
            font-size: 15px;
            color: var(--color-text-body);
            font-style: italic;
            line-height: 1.6;
            margin: 0 0 8px;
            border: none;
            padding: 0;
        }
        .case-card-metric {
            font-family: var(--font-mono);
            font-size: 22px;
            font-weight: 700;
            color: var(--color-success);
        }
        .cases-logos {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 28px;
            padding: 28px 0;
            border-top: 1px solid var(--color-border);
        }
        .cases-logos img {
            height: 28px;
            width: auto;
            filter: grayscale(100%);
            opacity: 0.45;
            transition: all var(--transition-fast);
            object-fit: contain;
        }
        .cases-logos img:hover {
            filter: grayscale(0%);
            opacity: 1;
        }
        @media (max-width: 768px) {
            .cases-stats {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .cases-stat-value {
                font-size: 34px;
            }
            .cases-cards {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .case-card {
                flex-direction: column;
                align-items: center;
                text-align: center;
                padding: 20px;
            }
            .cases-logos {
                gap: 18px;
            }
            .cases-logos img {
                height: 22px;
            }
        }
        @media (max-width: 520px) {
            .cases-stats {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .cases-stat-value {
                font-size: 30px;
            }
        }

        /* ===== PRICING ===== */
        .pricing-cards {
            display: flex;
            align-items: flex-start;
            justify-content: center;
            gap: 28px;
            flex-wrap: wrap;
        }
        .pricing-card {
            background: var(--color-bg-card-elevated);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            padding: 32px 28px;
            width: 380px;
            max-width: 100%;
            position: relative;
            transition: all var(--transition-fast);
            display: flex;
            flex-direction: column;
        }
        .pricing-card.recommended {
            width: 440px;
            margin-top: -12px;
            border-top: 4px solid var(--color-primary);
            box-shadow: 0 8px 40px rgba(139, 92, 246, 0.15);
            z-index: 2;
        }
        .pricing-card:hover {
            border-color: rgba(255, 255, 255, 0.12);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card);
        }
        .pricing-card.recommended:hover {
            box-shadow: 0 12px 48px rgba(139, 92, 246, 0.2);
        }
        .pricing-badge {
            position: absolute;
            top: 16px;
            right: 20px;
            background: var(--color-cta);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.03em;
        }
        .pricing-card-name {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text-primary);
            margin-bottom: 8px;
        }
        .pricing-card-price {
            font-family: var(--font-mono);
            font-size: 48px;
            font-weight: 700;
            color: var(--color-text-primary);
            line-height: 1.1;
            margin-bottom: 4px;
        }
        .pricing-card-price span {
            font-size: 15px;
            font-weight: 400;
            color: var(--color-text-muted);
            font-family: var(--font-sans);
        }
        .pricing-card-desc {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 20px;
        }
        .pricing-features {
            list-style: none;
            flex-grow: 1;
            margin-bottom: 20px;
        }
        .pricing-features li {
            font-size: 15px;
            color: var(--color-text-body);
            padding: 8px 0;
            display: flex;
            align-items: center;
            gap: 10px;
            line-height: 1.5;
        }
        .pricing-features li i {
            color: var(--color-success);
            font-size: 14px;
            flex-shrink: 0;
        }
        .pricing-card .btn {
            width: 100%;
            text-align: center;
        }
        @media (max-width: 900px) {
            .pricing-cards {
                flex-direction: column;
                align-items: center;
                gap: 20px;
            }
            .pricing-card,
            .pricing-card.recommended {
                width: 100%;
                max-width: 440px;
                margin-top: 0;
            }
            .pricing-card.recommended {
                order: -1;
                border-top: 4px solid var(--color-primary);
            }
        }
        @media (max-width: 520px) {
            .pricing-card {
                padding: 24px 18px;
            }
            .pricing-card-price {
                font-size: 38px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.1);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            font-size: 17px;
            font-weight: 500;
            color: var(--color-text-sub);
            gap: 12px;
            min-height: 48px;
            transition: color var(--transition-fast);
            font-family: var(--font-sans);
        }
        .faq-question:hover {
            color: var(--color-text-primary);
        }
        .faq-num {
            font-family: var(--font-mono);
            font-size: 14px;
            color: var(--color-accent);
            font-weight: 600;
            flex-shrink: 0;
            width: 28px;
            text-align: center;
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--color-accent);
            transition: all var(--transition-fast);
            position: relative;
        }
        .faq-icon i {
            transition: transform var(--transition-smooth);
        }
        .faq-item.open .faq-icon {
            background: var(--color-accent);
            color: #fff;
        }
        .faq-item.open .faq-icon i {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 15px;
            color: var(--color-text-body);
            line-height: 1.7;
        }
        .faq-cta-link {
            display: inline-block;
            margin-top: 8px;
            font-size: 14px;
            color: var(--color-accent);
            font-weight: 500;
            transition: color var(--transition-fast);
            cursor: pointer;
        }
        .faq-cta-link:hover {
            color: var(--color-accent-light);
            text-decoration: underline;
        }
        @media (max-width: 520px) {
            .faq-question {
                font-size: 15px;
                padding: 15px 14px;
            }
            .faq-answer-inner {
                padding: 0 14px 14px;
                font-size: 14px;
            }
        }

        /* ===== CTA CONTACT ===== */
        .cta-section {
            background: var(--color-bg-card);
            padding: var(--section-pad-pc) 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
            position: relative;
            z-index: 1;
        }
        .cta-info h2 {
            font-size: 34px;
            font-weight: 700;
            color: var(--color-text-primary);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .cta-info p {
            font-size: 16px;
            color: var(--color-text-body);
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .cta-contact-methods {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .cta-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--color-text-sub);
        }
        .cta-contact-item i {
            color: var(--color-accent);
            width: 20px;
            text-align: center;
            flex-shrink: 0;
        }
        .cta-form {
            background: var(--color-bg-card-elevated);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            padding: 28px 24px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .cta-form input,
        .cta-form textarea {
            width: 100%;
            padding: 14px 16px;
            background: var(--color-bg-base);
            border: 1px solid var(--color-border-strong);
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 15px;
            resize: vertical;
            transition: all var(--transition-fast);
        }
        .cta-form input::placeholder,
        .cta-form textarea::placeholder {
            color: var(--color-text-muted);
        }
        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
            outline: none;
        }
        .cta-form textarea {
            min-height: 90px;
        }
        .cta-form .btn {
            width: 100%;
            max-width: 200px;
        }
        @media (max-width: 768px) {
            .cta-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-info h2 {
                font-size: 27px;
                text-align: center;
            }
            .cta-info p {
                text-align: center;
            }
            .cta-contact-methods {
                align-items: center;
            }
            .cta-form .btn {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .cta-section {
                padding: var(--section-pad-mobile) 0;
            }
        }

        /* ===== FOOTER ===== */
        .footer {
            background: var(--color-bg-base);
            border-top: 1px solid var(--color-border);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand-name {
            font-size: 20px;
            font-weight: 700;
            background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-accent) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 10px;
            display: inline-block;
        }
        .footer-brand-desc {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.6;
        }
        .footer h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-sub);
            margin-bottom: 14px;
            letter-spacing: 0.01em;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--color-accent);
        }
        .footer-social {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--color-bg-card-elevated);
            border: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-muted);
            font-size: 16px;
            transition: all var(--transition-fast);
            min-width: 38px;
            min-height: 38px;
        }
        .footer-social a:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: var(--color-text-muted);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
                text-align: center;
            }
            .footer-social {
                justify-content: center;
            }
            .footer-links {
                align-items: center;
            }
        }

        /* ===== UTILITY ===== */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .text-accent {
            color: var(--color-accent);
        }
        .text-success {
            color: var(--color-success);
        }
        .text-primary {
            color: var(--color-primary-light);
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
            html {
                scroll-behavior: auto;
            }
        }