/* ===========================
   CSS Variables & Reset
   =========================== */

:root {
    --tiktok-cyan: #00F2EA;
    --tiktok-pink: #FE2C55;
    --dark-bg: #0A0A0A;
    --light-bg: #FFFFFF;
    --gray-bg: #F5F5F5;
    --text-gray: #666666;
    --text-dark: #1A1A1A;

    --gradient-1: linear-gradient(135deg, #00F2EA 0%, #FE2C55 100%);
    --gradient-2: linear-gradient(135deg, #FE2C55 0%, #FF6B35 100%);
    --gradient-3: linear-gradient(135deg, #00F2EA 0%, #7C3AED 100%);

    --shadow-sm: 0 2px 10px rgba(0, 242, 234, 0.1);
    --shadow-md: 0 4px 20px rgba(0, 242, 234, 0.15);
    --shadow-lg: 0 8px 30px rgba(0, 242, 234, 0.2);

    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;

    --transition: 0.3s ease-in-out;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Microsoft YaHei', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===========================
   Navigation
   =========================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
}

.logo-icon {
    font-size: 1.8rem;
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    object-fit: cover;
}

.logo-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--tiktok-cyan);
}

.btn-primary-small {
    background: var(--gradient-1);
    color: white !important;
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: white;
    padding: 1rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    flex-direction: column;
    gap: 1rem;
    z-index: 999;
}

.mobile-menu a {
    text-decoration: none;
    color: var(--text-dark);
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.mobile-menu a:hover {
    background: var(--gray-bg);
    color: var(--tiktok-cyan);
}

/* ===========================
   Hero Section
   =========================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #0A0A0A 0%, #1A1A2E 100%);
    color: white;
    padding-top: 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.1;
}

.grid-pattern {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(var(--tiktok-cyan) 1px, transparent 1px),
        linear-gradient(90deg, var(--tiktok-cyan) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.floating-icon {
    position: absolute;
    font-size: 2rem;
    animation: float 3s ease-in-out infinite;
    opacity: 0.6;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.hero-content {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-family: 'Poppins', sans-serif;
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.9);
}

.hero-description {
    font-size: 1rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 2rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    padding: 1rem 2rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    color: white;
    padding: 1rem 2rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
}

/* Phones Showcase Container */
.phones-showcase {
    position: relative;
    width: 100%;
    height: 600px;
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 1500px;
    transform-style: preserve-3d;
}

.phone-mockup {
    position: absolute;
    width: 240px;
    height: 480px;
    background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
    border-radius: 36px;
    padding: 12px;
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transition: all 0.6s cubic-bezier(0.23, 1, 0.32, 1);
    transform-style: preserve-3d;
}

/* Center Phone - Main with Video */
.phone-center {
    z-index: 10;
    width: 260px;
    height: 520px;
    animation: floatCenter 4s ease-in-out infinite;
}

/* Left Phone */
.phone-left {
    z-index: 5;
    transform: translateX(-180px) translateZ(-100px) rotateY(25deg);
    opacity: 0.85;
    animation: floatLeft 4s ease-in-out infinite;
}

/* Right Phone */
.phone-right {
    z-index: 5;
    transform: translateX(180px) translateZ(-100px) rotateY(-25deg);
    opacity: 0.85;
    animation: floatRight 4s ease-in-out infinite;
}

/* Float Animations */
@keyframes floatCenter {
    0%, 100% { transform: translateY(0) rotateY(0deg); }
    50% { transform: translateY(-15px) rotateY(3deg); }
}

@keyframes floatLeft {
    0%, 100% { transform: translateX(-180px) translateZ(-100px) rotateY(25deg) translateY(0); }
    50% { transform: translateX(-180px) translateZ(-100px) rotateY(25deg) translateY(-20px); }
}

@keyframes floatRight {
    0%, 100% { transform: translateX(180px) translateZ(-100px) rotateY(-25deg) translateY(0); }
    50% { transform: translateX(180px) translateZ(-100px) rotateY(-25deg) translateY(-20px); }
}

/* Hover Effects */
.phones-showcase:hover .phone-left {
    transform: translateX(-200px) translateZ(-80px) rotateY(20deg);
    opacity: 0.9;
}

.phones-showcase:hover .phone-right {
    transform: translateX(200px) translateZ(-80px) rotateY(-20deg);
    opacity: 0.9;
}

.phones-showcase:hover .phone-center {
    transform: translateY(-10px) scale(1.02);
}

/* Placeholder Content for Side Phones */
.phone-content-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.7) 100%);
    color: white;
    text-align: center;
    gap: 1rem;
}

.placeholder-icon {
    font-size: 4rem;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.9; }
}

.placeholder-text {
    font-family: 'Poppins', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.placeholder-stats {
    background: var(--gradient-1);
    padding: 0.5rem 1.2rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--dark-bg);
    border-radius: 26px;
    overflow: hidden;
}

.tiktok-ui {
    position: relative;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--tiktok-cyan), var(--tiktok-pink));
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.tiktok-sidebar {
    position: absolute;
    right: 10px;
    bottom: 100px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.icon-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: white;
    font-size: 1.8rem;
    cursor: pointer;
    transition: var(--transition);
}

.icon-btn span {
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

.icon-btn:hover {
    transform: scale(1.1);
}

/* ===========================
   Stats Bar
   =========================== */

.stats-bar {
    background: var(--light-bg);
    padding: 3rem 0;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--gray-bg);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.stat-number {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-gray);
    font-size: 0.95rem;
    margin-top: 0.25rem;
}

/* ===========================
   Services Section
   =========================== */

.services {
    padding: 5rem 0;
    background: var(--gray-bg);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    color: var(--text-gray);
    font-size: 1.1rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    position: relative;
    background: white;
    padding: 2.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.service-card.featured {
    border: 2px solid var(--tiktok-cyan);
    box-shadow: 0 4px 20px rgba(0, 242, 234, 0.25);
}

.featured-badge {
    position: absolute;
    top: -15px;
    right: 20px;
    background: var(--gradient-1);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
}

.service-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.gradient-bg-1 {
    background: linear-gradient(135deg, rgba(0, 242, 234, 0.15), rgba(254, 44, 85, 0.15));
}

.gradient-bg-2 {
    background: linear-gradient(135deg, rgba(254, 44, 85, 0.15), rgba(255, 107, 53, 0.15));
}

.gradient-bg-3 {
    background: linear-gradient(135deg, rgba(0, 242, 234, 0.15), rgba(124, 58, 237, 0.15));
}

.service-title {
    font-family: 'Poppins', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.service-subtitle {
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.service-list {
    list-style: none;
    margin-bottom: 1.5rem;
}

.service-list li {
    padding: 0.5rem 0;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.service-target {
    background: var(--gray-bg);
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.service-stats {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.stat-badge {
    background: linear-gradient(135deg, rgba(0, 242, 234, 0.1), rgba(254, 44, 85, 0.1));
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
}

.stat-badge strong {
    color: var(--tiktok-pink);
    font-weight: 700;
}

.service-cta {
    display: inline-block;
    color: var(--tiktok-cyan);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.service-cta:hover {
    color: var(--tiktok-pink);
    transform: translateX(5px);
}

/* ===========================
   Why Choose Us
   =========================== */

.why-choose {
    padding: 5rem 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.feature-card {
    text-align: center;
    padding: 2rem;
    background: var(--gray-bg);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.feature-title {
    font-family: 'Poppins', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.feature-description {
    color: var(--text-gray);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ===========================
   Case Studies
   =========================== */

.cases {
    padding: 5rem 0;
    background: var(--gray-bg);
}

.cases-carousel {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.carousel-container {
    position: relative;
    overflow: hidden;
}

.case-card {
    display: none;
    background: white;
    padding: 3rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.case-card.active {
    display: block;
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.case-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.case-industry {
    font-size: 1.2rem;
    font-weight: 600;
}

.case-badge {
    background: var(--gradient-1);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
}

.case-title {
    font-family: 'Poppins', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 2rem;
}

.case-challenge,
.case-solution,
.case-results {
    margin-bottom: 2rem;
}

.case-challenge h4,
.case-solution h4,
.case-results h4 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--tiktok-pink);
}

.case-challenge ul,
.case-solution ol {
    margin-left: 1.5rem;
}

.case-challenge li,
.case-solution li {
    padding: 0.3rem 0;
    color: var(--text-dark);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 1rem;
}

.result-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--gray-bg);
    border-radius: var(--radius-sm);
}

.result-number {
    font-family: 'Poppins', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.result-label {
    color: var(--text-gray);
    font-size: 0.9rem;
}

.case-testimonial {
    background: linear-gradient(135deg, rgba(0, 242, 234, 0.05), rgba(254, 44, 85, 0.05));
    padding: 1.5rem;
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--tiktok-cyan);
}

.case-testimonial p {
    font-style: italic;
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

.case-testimonial cite {
    color: var(--text-gray);
    font-size: 0.9rem;
}

.carousel-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin-top: 2rem;
}

.carousel-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--tiktok-cyan);
    color: var(--tiktok-cyan);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-btn:hover {
    background: var(--tiktok-cyan);
    color: white;
    transform: scale(1.1);
}

.carousel-dots {
    display: flex;
    gap: 0.5rem;
}

.carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ddd;
    cursor: pointer;
    transition: var(--transition);
}

.carousel-dot.active {
    background: var(--tiktok-cyan);
    width: 30px;
    border-radius: 6px;
}

/* ===========================
   Process Section
   =========================== */

.process {
    padding: 5rem 0;
    background: white;
}

.process-timeline {
    max-width: 600px;
    margin: 0 auto;
}

.process-step {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 2rem;
    background: var(--gray-bg);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    transition: var(--transition);
}

.process-step:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

.step-number {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    color: white;
    border-radius: 50%;
    font-family: 'Poppins', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.step-title {
    font-family: 'Poppins', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.step-description {
    color: var(--text-gray);
    font-size: 0.95rem;
    line-height: 1.6;
}

.process-arrow {
    text-align: center;
    font-size: 2rem;
    color: var(--tiktok-cyan);
    margin: 0.5rem 0;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(10px); }
}

/* ===========================
   Testimonials
   =========================== */

.testimonials {
    padding: 5rem 0;
    background: var(--gray-bg);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.testimonial-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.stars {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.testimonial-text {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-bg);
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gray-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}

.author-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.author-role {
    font-size: 0.85rem;
    color: var(--text-gray);
}

/* ===========================
   Contact CTA Section
   =========================== */

.contact-cta {
    position: relative;
    padding: 5rem 0;
    background: linear-gradient(135deg, #0A0A0A 0%, #1A1A2E 100%);
    color: white;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(0, 242, 234, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 242, 234, 0.05) 1px, transparent 1px);
    background-size: 30px 30px;
}

.cta-content {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.cta-title {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-subtitle {
    font-size: 1.1rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 3rem;
}

.contact-form {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    padding: 3rem;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group input {
    width: 100%;
    padding: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: white;
    font-size: 1rem;
    transition: var(--transition);
}

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

.form-group input:focus {
    outline: none;
    border-color: var(--tiktok-cyan);
    background: rgba(255, 255, 255, 0.15);
}

.checkbox-label {
    display: block;
    color: white;
    font-weight: 600;
    margin-bottom: 1rem;
    text-align: left;
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    text-align: left;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.checkbox-item span {
    color: rgba(255, 255, 255, 0.9);
}

.btn-submit {
    width: 100%;
    padding: 1.25rem;
    background: var(--gradient-1);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 1rem;
}

.btn-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 242, 234, 0.4);
}

.form-notice {
    margin-top: 1rem;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
}

/* ===========================
   Footer
   =========================== */

.footer {
    background: var(--dark-bg);
    color: rgba(255, 255, 255, 0.8);
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-description {
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.footer-badges {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.badge {
    background: rgba(0, 242, 234, 0.1);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
}

.footer-title {
    font-weight: 700;
    margin-bottom: 1rem;
    color: white;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--tiktok-cyan);
}

.footer-contact {
    list-style: none;
}

.footer-contact li {
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    text-decoration: none;
    font-size: 1.3rem;
    transition: var(--transition);
}

.social-icon:hover {
    background: var(--tiktok-cyan);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
}

/* ===========================
   Responsive Design
   =========================== */

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero-content {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    /* Mobile Phones Showcase */
    .phones-showcase {
        height: 450px;
        perspective: 1000px;
    }

    .phone-mockup {
        width: 180px;
        height: 360px;
        padding: 8px;
        border-radius: 28px;
    }

    .phone-center {
        width: 200px;
        height: 400px;
    }

    .phone-left {
        transform: translateX(-100px) translateZ(-80px) rotateY(20deg);
    }

    .phone-right {
        transform: translateX(100px) translateZ(-80px) rotateY(-20deg);
    }

    @keyframes floatLeft {
        0%, 100% { transform: translateX(-100px) translateZ(-80px) rotateY(20deg) translateY(0); }
        50% { transform: translateX(-100px) translateZ(-80px) rotateY(20deg) translateY(-15px); }
    }

    @keyframes floatRight {
        0%, 100% { transform: translateX(100px) translateZ(-80px) rotateY(-20deg) translateY(0); }
        50% { transform: translateX(100px) translateZ(-80px) rotateY(-20deg) translateY(-15px); }
    }

    .phone-screen {
        border-radius: 22px;
    }

    .placeholder-icon {
        font-size: 2.5rem;
    }

    .placeholder-text {
        font-size: 0.9rem;
    }

    .placeholder-stats {
        font-size: 0.75rem;
        padding: 0.4rem 0.8rem;
    }

    .tiktok-sidebar {
        right: 5px;
        bottom: 60px;
        gap: 1rem;
    }

    .icon-btn {
        font-size: 1.4rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .checkbox-group {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .process-step {
        flex-direction: column;
        text-align: center;
    }

    .cta-title {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 2rem;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .hero-title {
        font-size: 2.5rem;
    }

    /* Tablet Phones Showcase */
    .phones-showcase {
        height: 520px;
    }

    .phone-mockup {
        width: 200px;
        height: 400px;
    }

    .phone-center {
        width: 220px;
        height: 440px;
    }

    .phone-left {
        transform: translateX(-140px) translateZ(-90px) rotateY(22deg);
    }

    .phone-right {
        transform: translateX(140px) translateZ(-90px) rotateY(-22deg);
    }

    @keyframes floatLeft {
        0%, 100% { transform: translateX(-140px) translateZ(-90px) rotateY(22deg) translateY(0); }
        50% { transform: translateX(-140px) translateZ(-90px) rotateY(22deg) translateY(-18px); }
    }

    @keyframes floatRight {
        0%, 100% { transform: translateX(140px) translateZ(-90px) rotateY(-22deg) translateY(0); }
        50% { transform: translateX(140px) translateZ(-90px) rotateY(-22deg) translateY(-18px); }
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}