/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #4f46e5;
    --primary-light: #818cf8;
    --primary-dark: #3730a3;
    --primary-50: #eef2ff;
    --primary-100: #e0e7ff;
    --accent: #06b6d4;
    --accent-light: #67e8f9;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,0.25);
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--gray-800);
    line-height: 1.6;
    overflow-x: hidden;
    background: var(--white);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.4rem;
    font-weight: 800;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.02);
}

.logo-icon {
    font-size: 1.6rem;
}

.logo-text {
    color: var(--gray-900);
}

.logo-accent {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--gray-600);
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 1px;
    transition: width 0.3s ease;
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #4f46e5 50%, #06b6d4 100%);
    opacity: 0.95;
}

.hero-gradient::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(6, 182, 212, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(139, 92, 246, 0.3) 0%, transparent 50%);
}

.hero-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float linear infinite;
}

@keyframes float {
    0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-100px) rotate(720deg); opacity: 0; }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 60px 0 120px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 24px;
    animation: fadeInDown 0.6s ease;
}

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

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 900;
    color: white;
    line-height: 1.15;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease 0.1s both;
}

.gradient-text {
    background: linear-gradient(135deg, #fbbf24, #f59e0b, #fbbf24);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.85);
    max-width: 640px;
    margin: 0 auto 40px;
    line-height: 1.7;
    font-weight: 400;
    animation: fadeInUp 0.6s ease 0.2s both;
}

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

/* Search Box */
.hero-search {
    max-width: 600px;
    margin: 0 auto 48px;
    animation: fadeInUp 0.6s ease 0.3s both;
}

.search-box {
    display: flex;
    align-items: center;
    background: white;
    border-radius: var(--radius-lg);
    padding: 6px;
    box-shadow: var(--shadow-2xl), 0 0 0 1px rgba(255,255,255,0.1);
    transition: var(--transition);
}

.search-box:focus-within {
    box-shadow: var(--shadow-2xl), 0 0 0 3px rgba(79, 70, 229, 0.3);
    transform: scale(1.02);
}

.search-icon {
    display: flex;
    align-items: center;
    padding: 0 12px 0 16px;
    color: var(--gray-400);
}

.search-input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 1.05rem;
    font-family: inherit;
    color: var(--gray-800);
    background: transparent;
    padding: 14px 8px;
    min-width: 0;
}

.search-input::placeholder {
    color: var(--gray-400);
}

.search-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.search-btn:hover {
    background: linear-gradient(135deg, var(--primary-dark), #2c2496);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

.search-btn-icon {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.search-btn:hover .search-btn-icon {
    transform: translateX(3px);
}

.search-hint {
    margin-top: 12px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
}

/* Result Card */
.result-card {
    max-width: 520px;
    margin: -8px auto 32px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
    animation: slideUp 0.4s ease;
    text-align: left;
}

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

.result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    background: linear-gradient(135deg, var(--primary-50), var(--primary-100));
    border-bottom: 1px solid var(--primary-100);
}

.result-number {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary-dark);
}

.result-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    cursor: pointer;
    color: var(--gray-400);
    transition: var(--transition);
    font-size: 1rem;
}

.result-close:hover {
    background: var(--gray-200);
    color: var(--gray-700);
}

.result-body {
    padding: 20px 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.result-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.result-icon {
    font-size: 1.4rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.result-label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 2px;
}

.result-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-800);
}

.result-link {
    display: block;
    padding: 14px 24px;
    text-align: center;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
    background: var(--gray-50);
    border-top: 1px solid var(--gray-200);
    transition: var(--transition);
}

.result-link:hover {
    background: var(--primary-50);
    color: var(--primary-dark);
}

/* Hero Stats */
.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    animation: fadeInUp 0.6s ease 0.4s both;
}

.hero-stat {
    text-align: center;
}

.hero-stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: white;
    line-height: 1.2;
}

.hero-stat-label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 400;
    margin-top: 4px;
}

.hero-stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
}

/* Hero Wave */
.hero-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    z-index: 1;
}

.hero-wave svg {
    display: block;
    width: 100%;
    height: 80px;
}

/* ===== Section Shared ===== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--primary-50);
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
    letter-spacing: 0.02em;
}

.section-title {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ===== Features ===== */
.features {
    padding: 100px 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    padding: 36px 28px;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.feature-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon-wrap {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-50);
    border-radius: var(--radius);
    margin-bottom: 20px;
    transition: var(--transition);
}

.feature-card:hover .feature-icon-wrap {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    transform: scale(1.05) rotate(-3deg);
}

.feature-icon {
    font-size: 1.6rem;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    filter: brightness(2);
}

.feature-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 10px;
}

.feature-text {
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ===== How It Works ===== */
.how-it-works {
    padding: 100px 0;
    background: var(--gray-50);
}

.steps {
    max-width: 700px;
    margin: 0 auto;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 28px;
    padding: 32px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
}

.step:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.step-number {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    font-size: 1.4rem;
    font-weight: 800;
    border-radius: var(--radius);
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.step-text {
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.6;
}

.step-visual {
    flex-shrink: 0;
}

.step-connector {
    display: flex;
    justify-content: center;
    padding: 12px 0;
    color: var(--gray-300);
}

/* Step visuals */
.step-phone {
    width: 160px;
    height: 60px;
    background: var(--gray-100);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--gray-200);
}

.step-phone-screen {
    padding: 8px 12px;
}

.step-phone-input {
    font-family: 'Inter', monospace;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gray-700);
    white-space: nowrap;
}

.step-loader {
    width: 160px;
    height: 8px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.step-loader-bar {
    width: 60%;
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: var(--radius-full);
    animation: loading 2s ease-in-out infinite;
}

@keyframes loading {
    0% { width: 0%; }
    50% { width: 80%; }
    100% { width: 100%; }
}

.step-result {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.step-result-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gray-700);
    padding: 4px 12px;
    background: var(--gray-50);
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

/* ===== Scenarios ===== */
.scenarios {
    padding: 100px 0;
    background: white;
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.scenario-card {
    padding: 32px 28px;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
}

.scenario-card:hover {
    background: white;
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
    transform: translateY(-4px);
}

.scenario-card--large {
    grid-column: 1 / -1;
    display: flex;
    align-items: flex-start;
    gap: 24px;
    background: linear-gradient(135deg, var(--primary-50), #f0f9ff);
    border-color: var(--primary-100);
}

.scenario-card--large:hover {
    background: linear-gradient(135deg, var(--primary-100), #e0f2fe);
}

.scenario-emoji {
    font-size: 2.4rem;
    margin-bottom: 16px;
    flex-shrink: 0;
}

.scenario-card--large .scenario-emoji {
    font-size: 3rem;
    margin-bottom: 0;
}

.scenario-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 10px;
}

.scenario-text {
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ===== Popular Codes ===== */
.popular-codes {
    padding: 100px 0;
    background: var(--gray-50);
}

.codes-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
}

.code-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px 12px;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    transition: var(--transition);
    text-align: center;
}

.code-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
    background: var(--primary-50);
}

.code-card--city {
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    border-color: #f59e0b;
}

.code-card--city:hover {
    background: linear-gradient(135deg, #fde68a, #fbbf24);
    border-color: #d97706;
}

.code-number {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1.2;
}

.code-operator {
    font-size: 0.8rem;
    color: var(--gray-500);
    font-weight: 500;
    margin-top: 4px;
}

.codes-more {
    text-align: center;
    margin-top: 40px;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
    background: white;
    border: 2px solid var(--primary);
    border-radius: var(--radius-full);
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

/* ===== FAQ ===== */
.faq {
    padding: 100px 0;
    background: white;
}

.faq-list {
    max-width: 720px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--primary-light);
}

.faq-item.active {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-800);
    text-align: left;
    font-family: inherit;
    transition: var(--transition);
}

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

.faq-chevron {
    flex-shrink: 0;
    color: var(--gray-400);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-chevron {
    transform: rotate(180deg);
    color: var(--primary);
}

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

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

.faq-answer p {
    padding: 0 24px 20px;
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.7;
}

/* ===== CTA ===== */
.cta {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #4f46e5 50%, #06b6d4 100%);
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 30% 50%, rgba(255,255,255,0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 50%, rgba(255,255,255,0.05) 0%, transparent 50%);
}

.cta-content {
    position: relative;
    text-align: center;
}

.cta-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    animation: bounce 2s ease-in-out infinite;
}

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

.cta-title {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 800;
    color: white;
    margin-bottom: 16px;
}

.cta-text {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 36px;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 40px;
    background: white;
    color: var(--primary);
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.cta-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-2xl);
    background: var(--gray-50);
}

.cta-btn svg {
    transition: transform 0.3s ease;
}

.cta-btn:hover svg {
    transform: translateX(4px);
}

/* ===== Footer ===== */
.footer {
    padding: 60px 0 0;
    background: var(--gray-900);
    color: var(--gray-400);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand .logo-text {
    color: white;
}

.footer-desc {
    font-size: 0.95rem;
    line-height: 1.7;
    max-width: 360px;
}

.footer-links h4 {
    color: white;
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--gray-400);
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
    padding-left: 4px;
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--gray-500);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .codes-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .scenarios-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .scenario-card--large {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: white;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--gray-100);
    }
    
    .nav-links.open {
        display: flex;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-content {
        padding: 40px 0 100px;
    }
    
    .search-btn-text {
        display: none;
    }
    
    .search-btn {
        padding: 14px 18px;
    }
    
    .search-btn-icon {
        font-size: 1.4rem;
    }
    
    .hero-stats {
        gap: 20px;
    }
    
    .hero-stat-number {
        font-size: 1.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .step {
        flex-direction: column;
    }
    
    .step-visual {
        align-self: center;
    }
    
    .scenarios-grid {
        grid-template-columns: 1fr;
    }
    
    .scenario-card--large {
        flex-direction: column;
    }
    
    .codes-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .codes-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }
    
    .hero-stat-divider {
        width: 40px;
        height: 1px;
    }
    
    .features, .how-it-works, .scenarios, .popular-codes, .faq, .cta {
        padding: 60px 0;
    }
}

/* ===== Scroll animations ===== */
.feature-card,
.scenario-card,
.step,
.code-card {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.feature-card.visible,
.scenario-card.visible,
.step.visible,
.code-card.visible {
    opacity: 1;
    transform: translateY(0);
}