/* roulang page: index */
:root {
            --bg-deep: #0d0618;
            --bg-deeper: #090314;
            --bg-card: rgba(255, 255, 255, 0.03);
            --bg-card-hover: rgba(255, 255, 255, 0.06);
            --border-card: rgba(255, 255, 255, 0.06);
            --border-card-hover: rgba(255, 255, 255, 0.15);
            --border-input: rgba(255, 255, 255, 0.10);
            --text-primary: #e0dce8;
            --text-secondary: #9e97a8;
            --text-white: #ffffff;
            --neon-purple: #7b1fa2;
            --neon-magenta: #d81b60;
            --neon-purple-light: #8e24aa;
            --neon-magenta-light: #e91e63;
            --electric-cyan: #00e5ff;
            --amber-gold: #ffab00;
            --gradient-main: linear-gradient(135deg, #7b1fa2 0%, #d81b60 100%);
            --gradient-main-light: linear-gradient(135deg, #8e24aa 0%, #e91e63 100%);
            --gradient-cta: linear-gradient(135deg, #8e24aa 0%, #d81b60 60%, #e91e63 100%);
            --radius-xl: 20px;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --radius-xs: 8px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
            --shadow-card-hover: 0 12px 40px rgba(123, 31, 162, 0.25);
            --shadow-glow-purple: 0 0 28px rgba(142, 36, 170, 0.5);
            --shadow-glow-cyan: 0 0 18px rgba(0, 229, 255, 0.35);
            --font-title: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --font-body: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
            --font-number: "DIN Alternate", "PingFang SC", "Microsoft YaHei", sans-serif;
            --container-max: 1200px;
            --nav-height: 72px;
            --nav-height-mobile: 60px;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

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

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

        body {
            font-family: var(--font-body);
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-deep);
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-tap-highlight-color: transparent;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            outline: none;
        }

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

        ul,
        ol {
            list-style: none;
        }

        /* ============ CONTAINER ============ */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ============ NAVIGATION ============ */
        .nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(13, 6, 24, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid transparent;
            transition: background var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth);
            display: flex;
            align-items: center;
        }

        .nav.scrolled {
            background: rgba(13, 6, 24, 0.95);
            border-bottom: 1px solid rgba(123, 31, 162, 0.25);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
        }

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

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-weight: 800;
            font-size: 22px;
            color: var(--text-white);
            letter-spacing: 0.5px;
            white-space: nowrap;
            z-index: 1001;
        }

        .nav-logo-icon {
            width: 34px;
            height: 34px;
            flex-shrink: 0;
        }

        .nav-logo-icon svg {
            width: 100%;
            height: 100%;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links a {
            position: relative;
            display: inline-block;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.7);
            border-radius: 6px;
            transition: color var(--transition-smooth), background var(--transition-smooth);
            white-space: nowrap;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--electric-cyan);
            border-radius: 2px;
            transition: transform var(--transition-smooth);
        }

        .nav-links a:hover,
        .nav-links a:focus-visible {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-links a:hover::after,
        .nav-links a:focus-visible::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 40px;
            height: 40px;
            gap: 6px;
            z-index: 1001;
            cursor: pointer;
            border-radius: 8px;
            transition: background var(--transition-smooth);
        }

        .nav-hamburger:hover {
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: rgba(255, 255, 255, 0.8);
            border-radius: 2px;
            transition: all var(--transition-smooth);
            transform-origin: center;
        }

        .nav-hamburger.active span:nth-child(1) {
            transform: translateY(8px) rotate(45deg);
        }
        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .nav-hamburger.active span:nth-child(3) {
            transform: translateY(-8px) rotate(-45deg);
        }

        .nav-mobile-panel {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(9, 3, 20, 0.97);
            backdrop-filter: blur(30px);
            -webkit-backdrop-filter: blur(30px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 16px;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-smooth);
        }

        .nav-mobile-panel.active {
            opacity: 1;
            pointer-events: auto;
        }

        .nav-mobile-panel a {
            font-size: 20px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.85);
            padding: 12px 28px;
            border-radius: 8px;
            transition: all var(--transition-smooth);
            letter-spacing: 1px;
        }

        .nav-mobile-panel a:hover {
            color: #ffffff;
            background: rgba(142, 36, 170, 0.2);
        }

        /* ============ SECTIONS ============ */
        .section {
            padding: 100px 0;
            position: relative;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--electric-cyan);
            margin-bottom: 12px;
            font-family: var(--font-title);
        }

        .section-title {
            font-family: var(--font-title);
            font-size: 34px;
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.75;
            margin-bottom: 40px;
        }

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

        .section-header .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        /* ============ HERO ============ */
        #hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: var(--nav-height);
            padding-bottom: 60px;
            position: relative;
            overflow: hidden;
            background-color: var(--bg-deep);
        }

        #hero::before {
            content: '';
            position: absolute;
            top: -15%;
            right: -10%;
            width: 60%;
            height: 80%;
            background: radial-gradient(ellipse at center, rgba(142, 36, 170, 0.35) 0%, rgba(123, 31, 162, 0.15) 40%, transparent 70%);
            border-radius: 50%;
            filter: blur(120px);
            pointer-events: none;
            z-index: 0;
        }

        #hero::after {
            content: '';
            position: absolute;
            bottom: -10%;
            left: -5%;
            width: 40%;
            height: 50%;
            background: radial-gradient(ellipse at center, rgba(216, 27, 96, 0.2) 0%, transparent 60%);
            border-radius: 50%;
            filter: blur(100px);
            pointer-events: none;
            z-index: 0;
        }

        .hero-grid-overlay {
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
            background-size: 40px 40px;
            pointer-events: none;
            z-index: 0;
            opacity: 0.6;
        }

        #hero .container {
            display: flex;
            align-items: center;
            gap: 48px;
            position: relative;
            z-index: 1;
            width: 100%;
        }

        .hero-content {
            flex: 1;
            max-width: 560px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 171, 0, 0.1);
            border: 1px solid rgba(255, 171, 0, 0.25);
            border-radius: 24px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            color: var(--amber-gold);
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .hero-badge-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--amber-gold);
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(255, 171, 0, 0.6);
            }
            50% {
                box-shadow: 0 0 0 8px rgba(255, 171, 0, 0);
            }
        }

        .hero-title {
            font-family: var(--font-title);
            font-size: 50px;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.15;
            letter-spacing: 0.5px;
            margin-bottom: 18px;
        }

        .hero-title .highlight {
            background: var(--gradient-main);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            font-weight: 900;
        }

        .hero-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 440px;
        }

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

        .hero-visual {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            min-height: 360px;
        }

        .hero-visual-inner {
            width: 100%;
            max-width: 480px;
            aspect-ratio: 4/3;
            border-radius: var(--radius-xl);
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow-card-hover);
            border: 1px solid rgba(255, 255, 255, 0.08);
            background: rgba(13, 6, 24, 0.6);
        }

        .hero-visual-inner img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.85;
            transition: opacity var(--transition-smooth);
        }

        .hero-visual-inner:hover img {
            opacity: 1;
        }

        .hero-visual-glow {
            position: absolute;
            inset: -3px;
            border-radius: 22px;
            background: var(--gradient-main);
            z-index: -1;
            opacity: 0.5;
            filter: blur(20px);
            pointer-events: none;
        }

        .hero-scroll-indicator {
            position: absolute;
            bottom: 24px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            animation: bounce-down 2s ease-in-out infinite;
            cursor: pointer;
        }

        .hero-scroll-indicator span {
            font-size: 11px;
            letter-spacing: 1px;
            color: var(--text-secondary);
        }

        .hero-scroll-arrow {
            width: 24px;
            height: 24px;
            color: rgba(255, 255, 255, 0.5);
        }

        @keyframes bounce-down {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(8px);
            }
        }

        /* ============ BUTTONS ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.3px;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }

        .btn-primary {
            background: var(--gradient-main);
            color: #ffffff;
            box-shadow: 0 4px 16px rgba(123, 31, 162, 0.3);
        }

        .btn-primary:hover {
            background: var(--gradient-main-light);
            box-shadow: var(--shadow-glow-purple);
            transform: scale(1.03);
            color: #ffffff;
        }

        .btn-primary:active {
            transform: scale(0.97);
            box-shadow: 0 2px 8px rgba(123, 31, 162, 0.4);
        }

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

        .btn-outline:hover {
            background: rgba(0, 229, 255, 0.08);
            border-color: #33eaff;
            box-shadow: var(--shadow-glow-cyan);
            color: #ffffff;
        }

        .btn-outline:active {
            background: rgba(0, 229, 255, 0.14);
            transform: scale(0.97);
        }

        .btn-white {
            background: #ffffff;
            color: #0d0618;
            font-weight: 700;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .btn-white:hover {
            background: transparent;
            color: #ffffff;
            border: 1.5px solid #ffffff;
            box-shadow: 0 0 24px rgba(255, 255, 255, 0.2);
            transform: scale(1.03);
        }

        .btn-white:active {
            transform: scale(0.97);
        }

        .btn-lg {
            padding: 16px 40px;
            font-size: 16px;
            border-radius: 14px;
            letter-spacing: 0.5px;
        }

        /* ============ CARDS ============ */
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-xl);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-card-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .card-pain {
            padding: 32px;
            text-align: left;
            border-radius: var(--radius-lg);
        }

        .card-pain .card-icon {
            width: 48px;
            height: 48px;
            margin-bottom: 16px;
            color: var(--electric-cyan);
        }

        .card-pain h3 {
            font-family: var(--font-title);
            font-size: 20px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }

        .card-pain p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .card-pain .card-accent {
            position: absolute;
            top: 0;
            left: 0;
            width: 0;
            height: 0;
            border-style: solid;
            border-width: 18px 18px 0 0;
            border-color: var(--amber-gold) transparent transparent transparent;
            opacity: 0.7;
        }

        .card-solution {
            padding: 0;
            display: flex;
            flex-direction: column;
            border-radius: var(--radius-xl);
        }

        .card-solution-img {
            width: 100%;
            height: 150px;
            object-fit: cover;
            border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        }

        .card-solution-body {
            padding: 28px 28px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card-solution-icon {
            width: 56px;
            height: 56px;
            margin-bottom: 14px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(142, 36, 170, 0.2);
            color: #c158dc;
        }

        .card-solution-icon svg {
            width: 30px;
            height: 30px;
        }

        .card-solution h3 {
            font-family: var(--font-title);
            font-size: 20px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }

        .card-solution p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
        }

        .card-solution-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--electric-cyan);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-smooth);
        }

        .card-solution-link:hover {
            gap: 8px;
            color: #ffffff;
        }

        .card-testimonial {
            padding: 28px;
            border-radius: var(--radius-lg);
            border-left: 3px solid var(--electric-cyan);
        }

        .card-testimonial .quote-icon {
            color: rgba(142, 36, 170, 0.4);
            margin-bottom: 12px;
            font-size: 40px;
            line-height: 1;
            font-family: Georgia, serif;
        }

        .card-testimonial blockquote {
            font-size: 15px;
            font-style: italic;
            color: var(--text-primary);
            line-height: 1.7;
            margin-bottom: 16px;
            quotes: none;
        }

        .card-testimonial .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .card-testimonial .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            object-fit: cover;
            flex-shrink: 0;
            border: 2px solid rgba(255, 255, 255, 0.12);
        }

        .card-testimonial .testimonial-name {
            font-weight: 600;
            font-size: 14px;
            color: var(--text-white);
        }
        .card-testimonial .testimonial-role {
            font-size: 12px;
            color: var(--text-secondary);
        }

        /* ============ PAIN GRID ============ */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        /* ============ SOLUTION GRID ============ */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        /* ============ RESULTS ============ */
        #results {
            background: var(--bg-deeper);
            position: relative;
        }

        #results::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(142, 36, 170, 0.4), transparent);
        }

        .results-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .result-badge {
            text-align: center;
            padding: 32px 20px;
            border-radius: var(--radius-lg);
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            position: relative;
            transition: all var(--transition-smooth);
        }

        .result-badge:hover {
            border-color: var(--border-card-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .result-number {
            font-family: var(--font-number);
            font-size: 48px;
            font-weight: 700;
            background: var(--gradient-main);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.1;
            margin-bottom: 4px;
            display: block;
        }

        .result-unit {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-white);
            vertical-align: super;
        }

        .result-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 6px;
            letter-spacing: 0.5px;
        }

        .result-ring {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 100px;
            height: 100px;
            border-radius: 50%;
            border: 1.5px solid rgba(255, 171, 0, 0.2);
            pointer-events: none;
        }

        /* ============ TESTIMONIALS GRID ============ */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.025);
            border: 1px solid rgba(255, 255, 255, 0.05);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .faq-item:hover {
            background: rgba(255, 255, 255, 0.04);
            border-color: rgba(255, 255, 255, 0.1);
        }

        .faq-item.active {
            border-color: rgba(142, 36, 170, 0.35);
            box-shadow: 0 0 20px rgba(123, 31, 162, 0.1);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--text-white);
            letter-spacing: 0.3px;
            transition: color var(--transition-smooth);
            user-select: none;
            gap: 12px;
        }

        .faq-question:hover {
            color: #ffffff;
        }

        .faq-icon {
            width: 22px;
            height: 22px;
            flex-shrink: 0;
            color: var(--electric-cyan);
            transition: transform var(--transition-smooth);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 300;
            line-height: 1;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            max-height: 180px;
            padding: 0 24px 18px;
        }

        /* ============ CTA BANNER ============ */
        #cta {
            background: var(--gradient-cta);
            position: relative;
            overflow: hidden;
        }

        #cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 30px 30px;
            pointer-events: none;
            opacity: 0.5;
        }

        #cta .container {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        #cta .section-title {
            color: #ffffff;
            font-size: 36px;
            margin-bottom: 10px;
        }

        #cta .section-desc {
            color: rgba(255, 255, 255, 0.8);
            margin-left: auto;
            margin-right: auto;
            margin-bottom: 28px;
        }

        /* ============ CONTACT ============ */
        #contact {
            background: var(--bg-deeper);
        }

        .contact-form-wrap {
            max-width: 900px;
            margin: 0 auto;
        }

        .contact-form {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            align-items: end;
        }

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

        .contact-form label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            letter-spacing: 0.5px;
        }

        .contact-form input,
        .contact-form textarea {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-input);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            color: var(--text-white);
            font-size: 14px;
            transition: all var(--transition-smooth);
            width: 100%;
        }

        .contact-form input:focus,
        .contact-form textarea:focus {
            border-color: var(--electric-cyan);
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.1), 0 0 16px rgba(0, 229, 255, 0.15);
            outline: none;
            background: rgba(255, 255, 255, 0.07);
        }

        .contact-form textarea {
            resize: vertical;
            min-height: 48px;
            max-height: 120px;
        }

        .contact-form .btn {
            height: 46px;
            align-self: end;
        }

        /* ============ FOOTER ============ */
        .footer {
            background: #070210;
            padding: 24px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-copy {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .footer-beian {
            font-size: 13px;
            color: var(--text-secondary);
        }

        /* ============ FLOATING CTA (MOBILE) ============ */
        .floating-cta {
            display: none;
            position: fixed;
            bottom: 20px;
            left: 5%;
            right: 5%;
            z-index: 998;
            background: var(--gradient-main);
            color: #ffffff;
            text-align: center;
            padding: 15px 20px;
            border-radius: 14px;
            font-weight: 700;
            font-size: 16px;
            letter-spacing: 0.5px;
            box-shadow: 0 8px 30px rgba(123, 31, 162, 0.5);
            transition: all var(--transition-smooth);
            cursor: pointer;
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
        }

        .floating-cta.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }

        .floating-cta:hover {
            box-shadow: 0 12px 36px rgba(142, 36, 170, 0.6);
            transform: translateY(-2px);
        }

        .floating-cta:active {
            transform: scale(0.96);
            box-shadow: 0 4px 16px rgba(123, 31, 162, 0.5);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1023px) {
            .hero-title {
                font-size: 38px;
            }
            .section-title {
                font-size: 28px;
            }
            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .pain-grid .card-pain:last-child {
                grid-column: span 2;
                max-width: 50%;
                justify-self: center;
            }
            .solution-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .results-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonials-grid .card-testimonial:last-child {
                grid-column: span 2;
                max-width: 50%;
                justify-self: center;
            }
            .contact-form {
                grid-template-columns: repeat(2, 1fr);
            }
            .contact-form .btn-wrap {
                grid-column: span 2;
                justify-self: center;
            }
            #hero .container {
                flex-direction: column;
                text-align: center;
                gap: 32px;
            }
            .hero-content {
                max-width: 100%;
            }
            .hero-subtitle {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-visual {
                min-height: auto;
            }
            .hero-visual-inner {
                max-width: 380px;
            }
        }

        @media (max-width: 767px) {
            .nav-links {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-mobile-panel {
                display: flex;
            }
            .hero-title {
                font-size: 30px;
            }
            .section-title {
                font-size: 24px;
            }
            .section {
                padding: 60px 0;
            }
            .pain-grid {
                grid-template-columns: 1fr;
            }
            .pain-grid .card-pain:last-child {
                grid-column: span 1;
                max-width: 100%;
                justify-self: stretch;
            }
            .solution-grid {
                grid-template-columns: 1fr;
            }
            .results-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            .testimonials-grid .card-testimonial:last-child {
                grid-column: span 1;
                max-width: 100%;
                justify-self: stretch;
            }
            .contact-form {
                grid-template-columns: 1fr;
            }
            .contact-form .btn-wrap {
                grid-column: span 1;
                justify-self: stretch;
            }
            .contact-form .btn {
                width: 100%;
            }
            .result-number {
                font-size: 36px;
            }
            .hero-visual-inner {
                max-width: 300px;
            }
            .floating-cta {
                display: block;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            #cta .section-title {
                font-size: 26px;
            }
            .footer .container {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 480px) {
            .hero-title {
                font-size: 26px;
            }
            .section-title {
                font-size: 22px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .results-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .result-number {
                font-size: 30px;
            }
            .result-badge {
                padding: 20px 12px;
            }
            .hero-visual-inner {
                max-width: 260px;
            }
            .card-pain,
            .card-solution-body,
            .card-testimonial {
                padding: 20px;
            }
            .card-solution-img {
                height: 120px;
            }
            .nav {
                height: var(--nav-height-mobile);
            }
            .nav-logo {
                font-size: 18px;
            }
            .nav-logo-icon {
                width: 28px;
                height: 28px;
            }
            html {
                scroll-padding-top: var(--nav-height-mobile);
            }
            #hero {
                padding-top: var(--nav-height-mobile);
            }
            .floating-cta {
                bottom: 12px;
                left: 4%;
                right: 4%;
                padding: 13px 16px;
                font-size: 15px;
                border-radius: 12px;
            }
        }

        /* Accessibility */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--electric-cyan);
            outline-offset: 2px;
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border-width: 0;
        }