/* roulang page: index */
:root {
            --bg-primary: #121216;
            --bg-secondary: #1a1a20;
            --bg-card: rgba(30, 30, 38, 0.7);
            --bg-cta-strip: #18181f;
            --bg-footer: #0e0e12;
            --accent-purple: #8b5cf6;
            --accent-magenta: #d946ef;
            --accent-gold: #c9a96e;
            --accent-gold-light: #d4b87a;
            --text-primary: #f0f0f0;
            --text-secondary: #b0b0b8;
            --border-subtle: rgba(255, 255, 255, 0.06);
            --border-card: rgba(139, 92, 246, 0.12);
            --border-card-hover: rgba(139, 92, 246, 0.35);
            --divider: rgba(255, 255, 255, 0.08);
            --divider-light: rgba(255, 255, 255, 0.1);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
            --shadow-card-hover: 0 8px 32px rgba(139, 92, 246, 0.18);
            --shadow-glow-purple: 0 0 28px rgba(139, 92, 246, 0.5);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --radius-pill: 50px;
            --font-display: "PingFang SC Heavy", "Noto Sans SC Bold", "Microsoft YaHei Bold", sans-serif;
            --font-body: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
            --font-mono: "DIN Alternate", "PingFang SC", monospace;
            --max-width: 1280px;
            --header-height: 72px;
            --header-height-mobile: 60px;
            --section-padding-lg: 110px;
            --section-padding-md: 80px;
            --section-padding-sm: 60px;
            --card-padding-lg: 32px;
            --card-padding-md: 24px;
            --transition-fast: 0.2s ease;
            --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-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            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 {
            font-family: inherit;
            border: none;
            outline: none;
            cursor: pointer;
        }

        input {
            cursor: text;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-purple);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        /* Header / Navigation */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(18, 18, 22, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid transparent;
            transition: background var(--transition-smooth), border-color var(--transition-smooth), height var(--transition-smooth);
        }

        .header.scrolled {
            background: rgba(18, 18, 22, 0.96);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

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

        .header-logo {
            display: flex;
            align-items: baseline;
            gap: 8px;
            flex-shrink: 0;
            z-index: 1001;
        }
        .header-logo .logo-text {
            font-family: var(--font-display);
            font-size: 22px;
            font-weight: 900;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .header-logo .logo-domain {
            font-size: 11px;
            color: var(--text-secondary);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            position: relative;
            padding: 4px 0;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-primary);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-purple);
            border-radius: 1px;
            transition: width var(--transition-smooth);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .btn-nav-cta {
            display: inline-block;
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 700;
            color: #ffffff;
            background: linear-gradient(135deg, var(--accent-purple), var(--accent-magenta));
            border-radius: var(--radius-pill);
            white-space: nowrap;
            transition: all var(--transition-smooth);
            cursor: pointer;
            flex-shrink: 0;
        }
        .btn-nav-cta:hover {
            box-shadow: var(--shadow-glow-purple);
            transform: scale(1.03);
            color: #ffffff;
        }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            z-index: 1001;
            background: none;
            border: none;
            padding: 8px;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-smooth);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* Mobile Menu */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(18, 18, 22, 0.97);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 32px;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-smooth);
        }
        .mobile-menu.active {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-menu a {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
            transition: color var(--transition-fast);
        }
        .mobile-menu a:hover {
            color: var(--accent-purple);
        }
        .mobile-menu .btn-nav-cta {
            font-size: 16px;
            padding: 14px 32px;
        }

        /* Section通用 */
        .section {
            padding: var(--section-padding-lg) 0;
        }
        .section-compact {
            padding: var(--section-padding-md) 0;
        }
        .section-title-wrapper {
            margin-bottom: 48px;
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .section-title-decor {
            width: 60px;
            height: 2px;
            border-radius: 1px;
            background: linear-gradient(90deg, var(--accent-purple), transparent);
            flex-shrink: 0;
        }
        .section-title {
            font-family: var(--font-display);
            font-size: 38px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-primary);
            letter-spacing: 0.3px;
        }
        .section-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            margin-top: 8px;
            max-width: 600px;
            line-height: 1.7;
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 100vh;
            min-height: 700px;
            display: flex;
            align-items: center;
            overflow: hidden;
            padding-top: var(--header-height);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.35;
            filter: brightness(0.55) saturate(1.2);
        }
        .hero-bg-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: radial-gradient(ellipse at 65% 50%, rgba(139, 92, 246, 0.12) 0%, transparent 60%),
                radial-gradient(ellipse at 30% 40%, rgba(18, 18, 22, 0.7) 0%, transparent 70%),
                linear-gradient(180deg, rgba(18, 18, 22, 0.3) 0%, rgba(18, 18, 22, 0.85) 100%);
        }
        .hero-geo-lines {
            position: absolute;
            inset: 0;
            z-index: 0;
            opacity: 0.04;
            background-image:
                linear-gradient(rgba(139, 92, 246, 0.5) 1px, transparent 1px),
                linear-gradient(90deg, rgba(139, 92, 246, 0.5) 1px, transparent 1px);
            background-size: 50px 50px;
            mask-image: radial-gradient(ellipse at 60% 50%, black 30%, transparent 70%);
            -webkit-mask-image: radial-gradient(ellipse at 60% 50%, black 30%, transparent 70%);
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 40px;
            width: 100%;
        }
        .hero-content {
            flex: 1;
            max-width: 600px;
        }
        .hero-tag {
            display: inline-block;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-gold);
            border: 1px solid var(--accent-gold);
            border-radius: var(--radius-pill);
            letter-spacing: 1px;
            margin-bottom: 20px;
            white-space: nowrap;
        }
        .hero h1 {
            font-family: var(--font-display);
            font-size: 54px;
            font-weight: 900;
            line-height: 1.18;
            color: var(--text-primary);
            letter-spacing: 1px;
            position: relative;
            padding-left: 28px;
        }
        .hero h1::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8%;
            height: 60%;
            width: 3px;
            border-radius: 2px;
            background: linear-gradient(180deg, var(--accent-purple), var(--accent-magenta), transparent);
        }
        .hero-subtitle {
            font-size: 19px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-top: 18px;
            max-width: 500px;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .hero-visual {
            flex: 0 0 460px;
            width: 460px;
            height: 460px;
            border-radius: 20px;
            overflow: hidden;
            position: relative;
            background: url('/assets/images/coverpic/cover-1.webp') center/cover no-repeat;
            box-shadow: 0 0 60px rgba(139, 92, 246, 0.2);
            border: 1px solid rgba(139, 92, 246, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.25) 0%, rgba(217, 70, 239, 0.1) 50%, rgba(18, 18, 22, 0.5) 100%);
            border-radius: 20px;
        }

        /* Buttons */
        .btn-primary {
            display: inline-block;
            padding: 15px 38px;
            font-size: 16px;
            font-weight: 700;
            color: #ffffff;
            background: linear-gradient(135deg, var(--accent-purple), var(--accent-magenta));
            border-radius: var(--radius-pill);
            transition: all var(--transition-smooth);
            cursor: pointer;
            text-align: center;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }
        .btn-primary:hover {
            box-shadow: var(--shadow-glow-purple);
            transform: scale(1.03);
            color: #ffffff;
            filter: brightness(1.12);
        }
        .btn-secondary {
            display: inline-block;
            padding: 14px 36px;
            font-size: 16px;
            font-weight: 700;
            color: var(--accent-gold);
            background: transparent;
            border: 1.5px solid var(--accent-gold);
            border-radius: var(--radius-pill);
            transition: all var(--transition-smooth);
            cursor: pointer;
            text-align: center;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }
        .btn-secondary:hover {
            border-color: var(--accent-gold-light);
            background: rgba(201, 169, 110, 0.08);
            color: var(--accent-gold-light);
        }
        .btn-text-link {
            font-size: 15px;
            font-weight: 600;
            color: var(--accent-purple);
            cursor: pointer;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-text-link:hover {
            text-decoration: underline;
            text-underline-offset: 4px;
            text-decoration-thickness: 1px;
            color: #a78bfa;
        }
        .btn-arrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            color: var(--accent-purple);
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .btn-arrow:hover {
            color: #a78bfa;
            gap: 12px;
        }
        .btn-arrow i {
            font-size: 13px;
        }

        /* 核心优势 */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .advantage-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: var(--card-padding-lg);
            transition: all var(--transition-smooth);
            position: relative;
        }
        .advantage-card:hover {
            border-color: var(--border-card-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .advantage-icon {
            width: 48px;
            height: 48px;
            margin-bottom: 18px;
            color: var(--accent-purple);
        }
        .advantage-icon svg {
            width: 100%;
            height: 100%;
            stroke: currentColor;
            fill: none;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .advantage-card h3 {
            font-family: var(--font-display);
            font-size: 21px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            letter-spacing: 0.4px;
        }
        .advantage-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* 服务板块 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .service-card:hover {
            border-color: var(--border-card-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .service-card-image {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
        }
        .service-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .service-card:hover .service-card-image img {
            transform: scale(1.04);
        }
        .service-card-image::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 50%;
            background: linear-gradient(transparent, rgba(18, 18, 22, 0.85));
            pointer-events: none;
        }
        .service-card-body {
            padding: var(--card-padding-md);
        }
        .service-card-body h3 {
            font-family: var(--font-display);
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.4px;
        }
        .service-card-body ul {
            list-style: none;
            padding: 0;
            margin-bottom: 16px;
        }
        .service-card-body ul li {
            position: relative;
            padding-left: 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 6px;
        }
        .service-card-body ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 9px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent-gold);
        }

        /* 数据背书 */
        .data-strip {
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            padding: 40px 20px;
            display: flex;
            justify-content: space-around;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .data-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 0 20px;
            position: relative;
        }
        .data-item+.data-item {
            border-left: 1px solid var(--divider-light);
        }
        .data-decor-line {
            width: 2px;
            height: 36px;
            background: var(--accent-gold);
            border-radius: 1px;
            flex-shrink: 0;
        }
        .data-number {
            font-family: var(--font-mono);
            font-size: 50px;
            font-weight: 900;
            color: var(--accent-gold);
            line-height: 1;
            letter-spacing: 1px;
        }
        .data-unit {
            font-size: 20px;
            font-weight: 700;
            color: var(--accent-gold);
            margin-left: 2px;
        }
        .data-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* 精选案例 */
        .case-card {
            display: flex;
            gap: 0;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
            margin-bottom: 32px;
        }
        .case-card:last-child {
            margin-bottom: 0;
        }
        .case-card:hover {
            border-color: var(--border-card-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .case-card-image {
            flex: 0 0 48%;
            position: relative;
            overflow: hidden;
            min-height: 320px;
        }
        .case-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .case-card:hover .case-card-image img {
            transform: scale(1.03);
        }
        .case-card-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(139, 92, 246, 0.13);
            pointer-events: none;
        }
        .case-card-body {
            flex: 1;
            padding: 36px 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .case-card-body h3 {
            font-family: var(--font-display);
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.4px;
        }
        .case-card-body p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
        }
        .case-card-reverse {
            flex-direction: row-reverse;
        }

        /* 解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .solution-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: var(--card-padding-lg);
            position: relative;
            overflow: hidden;
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .solution-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 24px;
            bottom: 24px;
            width: 2px;
            border-radius: 1px;
            background: var(--accent-gold);
            transition: background var(--transition-smooth);
        }
        .solution-card:hover {
            border-color: var(--border-card-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .solution-card:hover::before {
            background: var(--accent-purple);
        }
        .solution-number {
            font-family: var(--font-mono);
            font-size: 40px;
            font-weight: 900;
            color: var(--accent-gold);
            line-height: 1;
            padding-left: 16px;
        }
        .solution-card h3 {
            font-family: var(--font-display);
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            padding-left: 16px;
            letter-spacing: 0.3px;
        }
        .solution-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            padding-left: 16px;
            flex: 1;
        }
        .solution-card .btn-arrow {
            padding-left: 16px;
            margin-top: auto;
        }
        .solutions-cta-row {
            text-align: center;
            margin-top: 40px;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--divider);
            transition: all var(--transition-smooth);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 8px;
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            cursor: pointer;
            transition: color var(--transition-fast);
            gap: 16px;
            font-family: var(--font-body);
            letter-spacing: 0.3px;
        }
        .faq-question:hover {
            color: var(--accent-purple);
        }
        .faq-arrow {
            flex-shrink: 0;
            font-size: 14px;
            color: var(--text-secondary);
            transition: transform var(--transition-smooth);
        }
        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            color: var(--accent-purple);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 8px;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 8px 20px;
        }
        .faq-answer p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* 最终CTA */
        .cta-strip {
            background: var(--bg-cta-strip);
            border-radius: var(--radius-lg);
            padding: 70px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-strip::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(139, 92, 246, 0.06) 1px, transparent 1px),
                linear-gradient(90deg, rgba(139, 92, 246, 0.06) 1px, transparent 1px);
            background-size: 40px 40px;
            pointer-events: none;
        }
        .cta-strip h2 {
            font-family: var(--font-display);
            font-size: 34px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
            letter-spacing: 0.5px;
        }
        .cta-strip .cta-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }
        .cta-strip .btn-primary {
            position: relative;
            z-index: 1;
            font-size: 17px;
            padding: 17px 44px;
        }
        .cta-form-row {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 20px;
            position: relative;
            z-index: 1;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-input {
            flex: 1;
            min-width: 160px;
            padding: 14px 18px;
            font-size: 15px;
            background: #1e1e26;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            transition: all var(--transition-fast);
        }
        .cta-input:focus {
            border-color: var(--accent-purple);
            box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.12);
            outline: none;
        }
        .cta-input::placeholder {
            color: #6a6a72;
        }

        /* Footer */
        .footer {
            background: var(--bg-footer);
            padding: 50px 0 30px;
            position: relative;
        }
        .footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 120px;
            height: 2px;
            border-radius: 1px;
            background: linear-gradient(90deg, transparent, var(--accent-purple), transparent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
        }
        .footer-col h4 {
            font-family: var(--font-display);
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col p,
        .footer-col a {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 2;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent-purple);
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        .footer-qr-placeholder {
            width: 100px;
            height: 100px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px dashed rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 12px;
            text-align: center;
            line-height: 1.5;
        }
        .footer-bottom {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid var(--divider);
            text-align: center;
            font-size: 13px;
            color: var(--text-secondary);
        }
        .footer-bottom a {
            color: var(--accent-purple);
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: #a78bfa;
        }

        /* Toast */
        .toast {
            position: fixed;
            bottom: 40px;
            left: 50%;
            transform: translateX(-50%) translateY(100px);
            background: #1e1e26;
            color: var(--text-primary);
            padding: 14px 28px;
            border-radius: var(--radius-pill);
            font-size: 15px;
            font-weight: 600;
            z-index: 9999;
            border: 1px solid var(--accent-purple);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
            transition: transform var(--transition-smooth);
            pointer-events: none;
        }
        .toast.show {
            transform: translateX(-50%) translateY(0);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solutions-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solutions-grid .solution-card:nth-child(3) {
                grid-column: span 2;
            }
            .hero-visual {
                flex: 0 0 340px;
                width: 340px;
                height: 340px;
            }
            .hero h1 {
                font-size: 42px;
            }
            .hero-subtitle {
                font-size: 17px;
            }
            .section-title {
                font-size: 32px;
            }
            .data-number {
                font-size: 40px;
            }
            .case-card {
                flex-direction: column;
            }
            .case-card-reverse {
                flex-direction: column;
            }
            .case-card-image {
                flex: 0 0 auto;
                height: 240px;
                min-height: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .header {
                height: var(--header-height-mobile);
            }
            .nav-links {
                display: none;
            }
            .header .btn-nav-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-menu {
                display: flex;
            }
            .hero {
                min-height: auto;
                padding: 120px 0 60px;
            }
            .hero .container {
                flex-direction: column;
                text-align: center;
            }
            .hero-content {
                max-width: 100%;
                order: 1;
            }
            .hero h1 {
                font-size: 34px;
                padding-left: 0;
            }
            .hero h1::before {
                display: none;
            }
            .hero-subtitle {
                font-size: 16px;
                max-width: 100%;
            }
            .hero-buttons {
                justify-content: center;
            }
            .hero-visual {
                flex: 0 0 auto;
                width: 260px;
                height: 260px;
                order: 0;
                margin-bottom: 20px;
                border-radius: 16px;
            }
            .hero-visual::after {
                border-radius: 16px;
            }
            .section {
                padding: var(--section-padding-sm) 0;
            }
            .section-compact {
                padding: 50px 0;
            }
            .section-title {
                font-size: 28px;
            }
            .section-title-wrapper {
                margin-bottom: 32px;
            }
            .advantages-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .services-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .solutions-grid {
                grid-template-columns: 1fr;
            }
            .solutions-grid .solution-card:nth-child(3) {
                grid-column: span 1;
            }
            .data-strip {
                flex-direction: column;
                gap: 20px;
                padding: 28px 16px;
            }
            .data-item {
                flex-direction: row;
                justify-content: center;
                padding: 0;
                width: 100%;
            }
            .data-item+.data-item {
                border-left: none;
                border-top: 1px solid var(--divider-light);
                padding-top: 16px;
            }
            .data-number {
                font-size: 36px;
            }
            .case-card-image {
                height: 200px;
            }
            .case-card-body {
                padding: 24px 20px;
            }
            .cta-strip {
                padding: 40px 20px;
            }
            .cta-strip h2 {
                font-size: 26px;
            }
            .cta-form-row {
                flex-direction: column;
                align-items: center;
            }
            .cta-input {
                width: 100%;
                min-width: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
                text-align: center;
            }
            .footer-qr-placeholder {
                margin: 0 auto;
            }
            .faq-question {
                font-size: 16px;
                padding: 16px 4px;
            }
            .btn-primary {
                padding: 13px 28px;
                font-size: 15px;
            }
            .btn-secondary {
                padding: 12px 26px;
                font-size: 15px;
            }
            .section-title-decor {
                width: 40px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-visual {
                width: 200px;
                height: 200px;
            }
            .section-title {
                font-size: 24px;
            }
            .data-number {
                font-size: 30px;
            }
            .data-unit {
                font-size: 16px;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
                gap: 12px;
            }
            .hero-buttons .btn-primary,
            .hero-buttons .btn-secondary {
                width: 100%;
                max-width: 280px;
                text-align: center;
            }
            .cta-strip h2 {
                font-size: 22px;
            }
            .case-card-image {
                height: 180px;
            }
        }