/* roulang page: index */
:root {
            --primary-purple: #7B2FF7;
            --primary-magenta: #E8368F;
            --accent-cyan: #00E5FF;
            --accent-gold: #FFD740;
            --bg-deep: #0B0B12;
            --bg-card: rgba(255, 255, 255, 0.03);
            --text-white: #FFFFFF;
            --text-body: rgba(255, 255, 255, 0.75);
            --text-muted: rgba(255, 255, 255, 0.45);
            --border-subtle: rgba(255, 255, 255, 0.06);
            --border-medium: rgba(255, 255, 255, 0.15);
            --radius-xl: 18px;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-pill: 50px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 8px 40px rgba(123, 47, 247, 0.25);
            --shadow-gold: 0 0 32px rgba(255, 215, 64, 0.55);
            --shadow-cyan: 0 0 28px rgba(0, 229, 255, 0.4);
            --container-max: 1280px;
            --section-gap: 120px;
            --card-gap: 24px;
            --nav-height: 64px;
            --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-stack-zh: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
            --font-stack-num: "Inter", "SF Pro Display", system-ui, sans-serif;
        }

        *,
        *::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-stack-zh);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text-body);
            background-color: var(--bg-deep);
            background-image:
                repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.015) 0px, rgba(255, 255, 255, 0.015) 1px, transparent 1px, transparent 32px),
                repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.015) 0px, rgba(255, 255, 255, 0.015) 1px, transparent 1px, transparent 32px);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        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;
        }

        input,
        textarea {
            color: var(--text-white);
        }

        ::selection {
            background: rgba(123, 47, 247, 0.4);
            color: #fff;
        }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            :root {
                --section-gap: 72px;
                --card-gap: 16px;
                --radius-xl: 14px;
            }
        }

        /* ============ NAVIGATION ============ */
        .nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: transparent;
            transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
            display: flex;
            align-items: center;
        }

        .nav.scrolled {
            background: rgba(11, 11, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            box-shadow: 0 2px 24px rgba(0, 0, 0, 0.5);
        }

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

        .nav-logo {
            display: flex;
            align-items: baseline;
            gap: 8px;
            flex-shrink: 0;
            z-index: 1001;
        }

        .nav-logo-main {
            font-size: 22px;
            font-weight: 800;
            letter-spacing: -0.01em;
            background: linear-gradient(135deg, var(--primary-purple), var(--primary-magenta));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1;
        }

        .nav-logo-domain {
            font-size: 11px;
            color: var(--text-muted);
            font-weight: 400;
            letter-spacing: 0.03em;
            line-height: 1;
        }

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

        .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.7);
            letter-spacing: 0.02em;
            position: relative;
            padding: 4px 0;
            transition: color var(--transition-smooth);
        }

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

        .nav-links a:hover,
        .nav-links a:focus-visible {
            color: var(--accent-cyan);
        }

        .nav-links a:hover::after,
        .nav-links a:focus-visible::after {
            width: 100%;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 24px;
            font-size: 13px;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--primary-purple), var(--primary-magenta));
            border-radius: var(--radius-pill);
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            flex-shrink: 0;
            z-index: 1001;
        }

        .nav-cta:hover {
            box-shadow: var(--shadow-hover);
            transform: scale(1.04);
        }

        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            z-index: 1001;
            padding: 8px;
            background: none;
            border: none;
        }

        .nav-hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #fff;
            border-radius: 2px;
            transition: all 0.3s 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;
        }

        .nav-hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .nav-mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(7, 7, 13, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
        }

        .nav-mobile-overlay.active {
            display: flex;
        }

        .nav-mobile-overlay a {
            font-size: 20px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.85);
            letter-spacing: 0.04em;
            transition: color var(--transition-smooth);
        }

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

        @media (max-width: 768px) {
            .nav-links,
            .nav-cta.desktop-only {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-logo-main {
                font-size: 19px;
            }
            .nav-logo-domain {
                font-size: 10px;
            }
        }

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

        /* ============ HERO ============ */
        .hero {
            position: relative;
            min-height: 100vh;
            min-height: 700px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background-color: var(--bg-deep);
        }

        .hero-bg-img {
            position: absolute;
            inset: 0;
            z-index: 0;
            opacity: 0.22;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            filter: saturate(0.6) brightness(0.7);
        }

        .hero-glow-top-right {
            position: absolute;
            top: -180px;
            right: -120px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(232, 54, 143, 0.35) 0%, rgba(232, 54, 143, 0.08) 40%, transparent 70%);
            border-radius: 50%;
            filter: blur(180px);
            z-index: 1;
            pointer-events: none;
            animation: heroGlowFloat1 12s ease-in-out infinite;
        }

        .hero-glow-bottom-left {
            position: absolute;
            bottom: -160px;
            left: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(123, 47, 247, 0.35) 0%, rgba(123, 47, 247, 0.08) 40%, transparent 70%);
            border-radius: 50%;
            filter: blur(150px);
            z-index: 1;
            pointer-events: none;
            animation: heroGlowFloat2 14s ease-in-out infinite;
        }

        @keyframes heroGlowFloat1 {
            0%,
            100% {
                transform: translate(0, 0);
            }
            25% {
                transform: translate(-30px, 20px);
            }
            50% {
                transform: translate(-15px, -25px);
            }
            75% {
                transform: translate(20px, 10px);
            }
        }

        @keyframes heroGlowFloat2 {
            0%,
            100% {
                transform: translate(0, 0);
            }
            33% {
                transform: translate(25px, -18px);
            }
            66% {
                transform: translate(-20px, 15px);
            }
        }

        .hero-decor-lines {
            position: absolute;
            right: 5%;
            bottom: 18%;
            width: 200px;
            height: 200px;
            z-index: 1;
            pointer-events: none;
            opacity: 0.08;
            border: 2px solid rgba(255, 255, 255, 0.5);
            border-radius: 16px;
            transform: rotate(15deg) skewX(-5deg);
            clip-path: polygon(20% 0%, 80% 0%, 100% 50%, 80% 100%, 20% 100%, 0% 50%);
        }

        .hero .container {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 24px;
            padding-top: var(--nav-height);
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--accent-cyan);
            border: 1.5px solid var(--accent-cyan);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            letter-spacing: 0.04em;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            background: rgba(0, 229, 255, 0.04);
            animation: tagPulse 3s ease-in-out infinite;
        }

        @keyframes tagPulse {
            0%,
            100% {
                box-shadow: 0 0 0px rgba(0, 229, 255, 0);
            }
            50% {
                box-shadow: 0 0 18px rgba(0, 229, 255, 0.25);
            }
        }

        .hero h1 {
            font-size: 56px;
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.15;
            color: var(--text-white);
            max-width: 720px;
        }

        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-magenta) 60%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline;
        }

        .hero-subtitle {
            font-size: 17px;
            color: var(--text-body);
            max-width: 560px;
            line-height: 1.8;
            letter-spacing: 0.01em;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 36px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            cursor: pointer;
            text-align: center;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary-purple), var(--primary-magenta));
            color: #fff;
            border: none;
        }

        .btn-primary:hover {
            box-shadow: var(--shadow-hover);
            transform: scale(1.04);
        }

        .btn-secondary {
            background: transparent;
            color: var(--accent-cyan);
            border: 1.5px solid var(--accent-cyan);
        }

        .btn-secondary:hover {
            background: rgba(0, 229, 255, 0.08);
            color: #fff;
            box-shadow: var(--shadow-cyan);
            transform: scale(1.04);
        }

        .btn-gold {
            background: var(--accent-gold);
            color: var(--bg-deep);
            border: none;
            font-weight: 700;
        }

        .btn-gold:hover {
            box-shadow: var(--shadow-gold);
            transform: scale(1.04);
            filter: brightness(1.1);
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 32px;
                max-width: 100%;
            }
            .hero-subtitle {
                font-size: 15px;
                max-width: 100%;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: stretch;
                width: 100%;
                gap: 12px;
            }
            .btn {
                padding: 14px 28px;
                font-size: 14px;
                width: 100%;
                text-align: center;
            }
            .hero-glow-top-right {
                width: 300px;
                height: 300px;
                top: -100px;
                right: -60px;
                filter: blur(120px);
            }
            .hero-glow-bottom-left {
                width: 260px;
                height: 260px;
                bottom: -100px;
                left: -60px;
                filter: blur(100px);
            }
            .hero-decor-lines {
                width: 120px;
                height: 120px;
                right: 4%;
                bottom: 10%;
                opacity: 0.05;
            }
            .hero {
                min-height: 650px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 27px;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .hero-tag {
                font-size: 11px;
                padding: 5px 12px;
            }
            .hero {
                min-height: 600px;
            }
        }

        /* ============ SECTIONS ============ */
        .section {
            padding: var(--section-gap) 0;
            position: relative;
        }

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

        .section-header h2 {
            font-size: 40px;
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.3;
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-body);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .section-header h2 {
                font-size: 26px;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .section-header p {
                font-size: 14px;
            }
        }

        /* ============ SERVICES ============ */
        .services-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--card-gap);
        }

        .service-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 36px 32px;
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            gap: 16px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 100px;
            height: 100px;
            background: radial-gradient(circle, rgba(123, 47, 247, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
            transition: all var(--transition-smooth);
        }

        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-medium);
        }

        .service-card:hover::before {
            width: 140px;
            height: 140px;
            top: -50px;
            right: -50px;
            opacity: 1.2;
        }

        .service-card-icon {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--accent-cyan);
            flex-shrink: 0;
        }

        .service-card-icon i {
            filter: drop-shadow(0 0 10px rgba(0, 229, 255, 0.4));
        }

        .service-card h3 {
            font-size: 22px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-white);
        }

        .service-card p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
        }

        .service-card-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--accent-cyan);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-smooth);
            cursor: pointer;
            align-self: flex-start;
        }

        .service-card-link:hover {
            gap: 10px;
        }

        @media (max-width: 1024px) {
            .services-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .services-grid {
                grid-template-columns: 1fr;
            }
            .service-card {
                padding: 28px 20px;
                border-radius: var(--radius-xl);
            }
            .service-card:hover {
                transform: none;
            }
            .service-card:active {
                transform: scale(0.98);
                box-shadow: var(--shadow-hover);
            }
            .service-card h3 {
                font-size: 18px;
            }
        }

        /* ============ DATA BADGES ============ */
        .data-strip {
            background: rgba(11, 11, 18, 0.6);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 56px 0;
            position: relative;
            overflow: hidden;
        }

        .data-strip::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(123, 47, 247, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 1;
        }

        .data-badge {
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }

        .data-badge-number-wrap {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 120px;
            height: 120px;
        }

        .data-badge-ring {
            position: absolute;
            inset: 0;
            border-radius: 50%;
            border: 2px solid transparent;
            background: radial-gradient(circle at center, rgba(255, 215, 64, 0.12) 0%, rgba(255, 215, 64, 0.02) 50%, transparent 70%);
            animation: ringPulse 4s ease-in-out infinite;
        }

        @keyframes ringPulse {
            0%,
            100% {
                transform: scale(1);
                opacity: 0.6;
            }
            50% {
                transform: scale(1.08);
                opacity: 1;
            }
        }

        .data-badge-number {
            font-family: var(--font-stack-num);
            font-size: 48px;
            font-weight: 900;
            color: var(--accent-gold);
            text-shadow: 0 0 20px rgba(255, 215, 64, 0.5), 0 0 40px rgba(255, 215, 64, 0.2);
            position: relative;
            z-index: 1;
            letter-spacing: -0.02em;
        }

        .data-badge-label {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            letter-spacing: 0.04em;
        }

        @media (max-width: 768px) {
            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .data-badge-number {
                font-size: 36px;
            }
            .data-badge-number-wrap {
                width: 90px;
                height: 90px;
            }
            .data-badge-label {
                font-size: 12px;
            }
        }

        @media (max-width: 520px) {
            .data-badge-number {
                font-size: 30px;
            }
            .data-badge-number-wrap {
                width: 72px;
                height: 72px;
            }
        }

        /* ============ CASES ============ */
        .cases-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .case-card {
            display: flex;
            gap: 24px;
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 20px;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
            align-items: stretch;
            overflow: hidden;
        }

        .case-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-medium);
        }

        .case-card-img {
            width: 280px;
            min-height: 180px;
            flex-shrink: 0;
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform var(--transition-smooth);
        }

        .case-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .case-card:hover .case-card-img img {
            transform: scale(1.04);
        }

        .case-card-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 12px;
            justify-content: center;
            min-width: 0;
        }

        .case-card-content h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--text-white);
            line-height: 1.4;
        }

        .case-card-content p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
        }

        .case-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .case-tag {
            font-size: 12px;
            font-weight: 500;
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 229, 255, 0.35);
            border-radius: var(--radius-pill);
            padding: 4px 14px;
            letter-spacing: 0.04em;
            background: rgba(0, 229, 255, 0.05);
            white-space: nowrap;
        }

        @media (max-width: 768px) {
            .case-card {
                flex-direction: column;
                padding: 16px;
                gap: 16px;
            }
            .case-card-img {
                width: 100%;
                min-height: 180px;
                max-height: 220px;
            }
            .case-card:hover {
                transform: none;
            }
            .case-card:active {
                transform: scale(0.98);
                box-shadow: var(--shadow-hover);
            }
            .case-card-content h3 {
                font-size: 18px;
            }
        }

        /* ============ SOLUTIONS ============ */
        .solutions-flow {
            display: flex;
            align-items: flex-start;
            justify-content: center;
            gap: 0;
            flex-wrap: nowrap;
            position: relative;
        }

        .solution-step {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
            text-align: center;
            position: relative;
            z-index: 1;
            min-width: 0;
        }

        .solution-dot {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-purple), var(--primary-magenta));
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-stack-num);
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 4px 20px rgba(123, 47, 247, 0.35);
            position: relative;
            z-index: 2;
        }

        .solution-connector {
            position: absolute;
            top: 28px;
            left: calc(50% + 28px);
            width: calc(100% - 56px);
            height: 2px;
            z-index: 0;
            overflow: hidden;
        }

        .solution-connector::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: repeating-linear-gradient(90deg, var(--accent-cyan) 0px, var(--accent-cyan) 6px, transparent 6px, transparent 12px);
            animation: dashMove 2s linear infinite;
        }

        @keyframes dashMove {
            0% {
                transform: translateX(0);
            }
            100% {
                transform: translateX(24px);
            }
        }

        .solution-step:last-child .solution-connector {
            display: none;
        }

        .solution-step h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-white);
            line-height: 1.4;
        }

        .solution-step p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
            max-width: 200px;
        }

        @media (max-width: 768px) {
            .solutions-flow {
                flex-direction: column;
                align-items: center;
                gap: 0;
            }
            .solution-step {
                flex-direction: row;
                align-items: center;
                gap: 16px;
                text-align: left;
                width: 100%;
                max-width: 400px;
            }
            .solution-connector {
                position: absolute;
                top: auto;
                left: 28px;
                top: 56px;
                width: 2px;
                height: calc(100% - 56px);
            }
            .solution-connector::before {
                width: 100%;
                height: 100%;
                background: repeating-linear-gradient(180deg, var(--accent-cyan) 0px, var(--accent-cyan) 6px, transparent 6px, transparent 12px);
                animation: dashMoveV 2s linear infinite;
            }
            @keyframes dashMoveV {
                0% {
                    transform: translateY(0);
                }
                100% {
                    transform: translateY(24px);
                }
            }
            .solution-step:last-child .solution-connector {
                display: none;
            }
            .solution-dot {
                width: 44px;
                height: 44px;
                font-size: 18px;
                flex-shrink: 0;
            }
            .solution-step h3 {
                font-size: 16px;
            }
            .solution-step p {
                font-size: 13px;
                max-width: 100%;
            }
        }

        /* ============ FAQ ============ */
        .faq-container {
            max-width: 800px;
            margin: 0 auto;
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

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

        .faq-item:last-child {
            border-bottom: none;
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-white);
            cursor: pointer;
            text-align: left;
            letter-spacing: 0.01em;
            transition: color var(--transition-smooth);
            gap: 16px;
            background: none;
            border: none;
            font-family: inherit;
        }

        .faq-question:hover {
            color: var(--accent-cyan);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--accent-cyan);
            transition: transform 0.4s ease;
        }

        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.75;
            background: rgba(255, 255, 255, 0.015);
        }

        @media (max-width: 768px) {
            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }
            .faq-answer-inner {
                padding: 0 18px 16px;
                font-size: 14px;
            }
        }

        /* ============ CTA BANNER ============ */
        .cta-banner {
            background: linear-gradient(135deg, var(--primary-purple), var(--primary-magenta));
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -80px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-banner::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(0, 0, 0, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-banner .container {
            position: relative;
            z-index: 1;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
        }

        .cta-banner h2 {
            font-size: 36px;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }

        .cta-banner h2 .gold-em {
            color: var(--accent-gold);
        }

        .cta-banner .cta-sub {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 500px;
        }

        .cta-form {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr auto;
            gap: 12px;
            width: 100%;
            max-width: 780px;
            margin-top: 8px;
        }

        .cta-form input {
            padding: 14px 22px;
            background: rgba(255, 255, 255, 0.1);
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-pill);
            color: #fff;
            font-size: 15px;
            letter-spacing: 0.02em;
            transition: all var(--transition-smooth);
            width: 100%;
            font-family: var(--font-stack-zh);
        }

        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .cta-form input:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.3);
            background: rgba(255, 255, 255, 0.15);
            outline: none;
        }

        .cta-form .btn-gold {
            padding: 14px 32px;
            font-size: 15px;
            white-space: nowrap;
            border-radius: var(--radius-pill);
        }

        @media (max-width: 768px) {
            .cta-banner {
                padding: 56px 0;
            }
            .cta-banner h2 {
                font-size: 26px;
            }
            .cta-form {
                grid-template-columns: 1fr;
                max-width: 100%;
            }
            .cta-form input {
                padding: 14px 20px;
                font-size: 14px;
            }
            .cta-form .btn-gold {
                width: 100%;
                text-align: center;
                padding: 14px 28px;
            }
        }

        /* ============ FOOTER ============ */
        .footer {
            background: #07070D;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 40px 0;
        }

        .footer .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
        }

        .footer-left {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .footer-logo {
            display: flex;
            align-items: baseline;
            gap: 8px;
        }

        .footer-logo-main {
            font-size: 20px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-purple), var(--primary-magenta));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1;
        }

        .footer-logo-domain {
            font-size: 11px;
            color: var(--text-muted);
            letter-spacing: 0.03em;
            line-height: 1;
        }

        .footer-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .footer-right {
            text-align: right;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .footer-right p {
            font-size: 13px;
            color: var(--text-muted);
        }

        @media (max-width: 768px) {
            .footer .container {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
            .footer-right {
                text-align: center;
            }
            .footer-left {
                align-items: center;
            }
        }

        /* ============ UTILITY ANIMATIONS ============ */
        .fade-in-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }

        .fade-in-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        @media (max-width: 768px) {
            .fade-in-up {
                transform: translateY(20px);
                transition: opacity 0.5s ease, transform 0.5s ease;
            }
        }

        /* Focus accessibility */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

        .btn:focus-visible {
            outline-offset: 4px;
        }

        /* Skip to content for accessibility */
        .skip-link {
            position: absolute;
            top: -100px;
            left: 16px;
            z-index: 2000;
            background: var(--accent-cyan);
            color: #000;
            padding: 10px 18px;
            border-radius: 6px;
            font-weight: 600;
            font-size: 14px;
            transition: top 0.3s ease;
        }

        .skip-link:focus {
            top: 16px;
        }