/* ========================================
   听栗英语 Tinlea 官网样式
   主题色：栗色 (Chestnut)
   开发公司：云南拓景信息技术有限公司
   ======================================== */

/* === CSS Variables === */
:root {
    --color-primary: #8B5E3C;
    --color-primary-dark: #6B3A1F;
    --color-primary-light: #B8865C;
    --color-primary-lighter: #D4A87C;
    --color-primary-bg: #FFF7F2;
    --color-primary-bg2: #FDF0E7;
    --color-accent: #E8784A;
    --color-accent-light: #FFECE2;
    --color-text: #2D2218;
    --color-text-light: #6B5E50;
    --color-text-lighter: #9B8E82;
    --color-white: #FFFFFF;
    --color-bg: #FFFBF8;
    --color-bg-gray: #F9F6F3;
    --color-border: #E8DDD2;
    --color-success: #5B9A3F;
    --color-gradient-1: #8B5E3C;
    --color-gradient-2: #B8733A;
    --color-gradient-3: #D4915A;
    --shadow-sm: 0 1px 3px rgba(107, 58, 31, 0.06);
    --shadow-md: 0 4px 16px rgba(107, 58, 31, 0.08);
    --shadow-lg: 0 8px 32px rgba(107, 58, 31, 0.12);
    --shadow-xl: 0 20px 60px rgba(107, 58, 31, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

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

/* === Navbar === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition);
    padding: 0;
}

.navbar.scrolled {
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-primary-dark);
}

.logo-img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
}

.logo-text small {
    font-weight: 400;
    font-size: 0.7rem;
    color: var(--color-text-lighter);
    display: block;
    line-height: 1;
    margin-top: -2px;
}

.nav-links {
    display: flex;
    gap: 4px;
}

.nav-links a {
    padding: 8px 18px;
    border-radius: 20px;
    font-size: 0.92rem;
    color: var(--color-text-light);
    font-weight: 500;
}

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

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

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

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

/* === Hero Section === */
.hero {
    padding: 140px 0 100px;
    background: linear-gradient(170deg, var(--color-primary-bg) 0%, var(--color-white) 40%, var(--color-primary-bg2) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(216, 168, 124, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(139, 94, 60, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--color-accent-light);
    color: var(--color-accent);
    padding: 8px 20px;
    border-radius: 24px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 28px;
}

.hero-title {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.3;
    color: var(--color-text);
    margin-bottom: 20px;
}

.hero-title .highlight {
    color: var(--color-primary);
    position: relative;
    display: inline-block;
}

.hero-title .highlight::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 0;
    right: 0;
    height: 10px;
    background: var(--color-primary-lighter);
    opacity: 0.3;
    border-radius: 4px;
    z-index: -1;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-light);
    line-height: 1.9;
    margin-bottom: 32px;
}

.hero-subtitle strong {
    color: var(--color-primary-dark);
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 36px;
}

.hero-feature-item {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--color-white);
    padding: 10px 18px;
    border-radius: 20px;
    font-size: 0.89rem;
    color: var(--color-text-light);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.hero-feature-item:hover {
    border-color: var(--color-primary-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.hero-feature-icon {
    font-size: 1rem;
}

.hero-cta {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 36px;
    border-radius: 28px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    box-shadow: 0 4px 20px rgba(139, 94, 60, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(139, 94, 60, 0.45);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-primary);
    border: 2px solid var(--color-primary-light);
}

.btn-secondary:hover {
    background: var(--color-primary-bg);
    border-color: var(--color-primary);
}

.hero-hint {
    margin-top: 16px;
    font-size: 0.85rem;
    color: var(--color-text-lighter);
    padding-left: 4px;
}

/* Hero Visual - Phone mockup */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-phone {
    width: 240px;
    height: 460px;
    background: linear-gradient(145deg, #3A2A1A 0%, #2D1F12 100%);
    border-radius: 36px;
    padding: 12px;
    box-shadow: var(--shadow-xl);
    position: relative;
}

.hero-phone::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 6px;
    background: #5A4A3A;
    border-radius: 3px;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, #8B5E3C 0%, #6B3A1F 100%);
    border-radius: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px;
    overflow: hidden;
    position: relative;
}

.phone-content {
    text-align: center;
    color: var(--color-white);
    position: relative;
    z-index: 1;
}

.phone-wave {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.2);
    animation: phoneWave 3s ease-out infinite;
}

.phone-wave:nth-child(2) {
    animation-delay: 1s;
}

.phone-wave:nth-child(3) {
    animation-delay: 2s;
}

@keyframes phoneWave {
    0% {
        width: 60px;
        height: 60px;
        opacity: 1;
    }
    100% {
        width: 200px;
        height: 200px;
        opacity: 0;
    }
}

.phone-text {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
    text-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

.phone-text-sub {
    font-size: 0.75rem;
    opacity: 0.8;
    text-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

/* === Section Header === */
.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-header h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: 12px;
}

.section-header p {
    font-size: 1.05rem;
    color: var(--color-text-light);
}

/* === Features Section === */
.features {
    padding: 100px 0;
    background: var(--color-white);
}

/* Step Track */
.feature-steps {
    margin-bottom: 80px;
    overflow: hidden;
}

.step-track {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    flex-wrap: wrap;
}

.step-item {
    text-align: center;
    padding: 28px 20px;
    border-radius: var(--radius-lg);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    width: 190px;
    position: relative;
    transition: var(--transition);
}

.step-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.step-item.highlight-step {
    background: linear-gradient(180deg, var(--color-primary-bg) 0%, var(--color-primary-bg2) 100%);
    border-color: var(--color-primary-light);
    border-width: 2px;
}

.step-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.step-item.highlight-step .step-number {
    background: var(--color-accent);
    box-shadow: 0 4px 14px rgba(232, 120, 74, 0.35);
}

.step-icon {
    font-size: 2rem;
    margin-bottom: 10px;
}

.step-item h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
}

.step-item p {
    font-size: 0.82rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

.step-item p small {
    display: block;
    margin-top: 4px;
    color: var(--color-text-lighter);
    font-size: 0.78rem;
}

.step-badge {
    display: inline-block;
    margin-top: 10px;
    padding: 4px 14px;
    background: var(--color-accent);
    color: var(--color-white);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.step-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-primary-light);
    padding: 0 4px;
    margin-top: 40px;
    font-weight: 700;
}

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

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

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    opacity: 0;
    transition: var(--transition);
}

.feature-card:hover {
    background: var(--color-white);
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
    border-color: var(--color-primary-light);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card-icon {
    font-size: 2.2rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

/* === Advantage Section === */
.advantage {
    padding: 100px 0;
    background: var(--color-bg-gray);
}

.compare-table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    background: var(--color-white);
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 700px;
}

.compare-table th {
    background: var(--color-primary-bg);
    padding: 18px 20px;
    text-align: center;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-text);
    border-bottom: 2px solid var(--color-border);
}

.compare-table th:first-child {
    text-align: left;
    border-radius: var(--radius-lg) 0 0 0;
}

.compare-table th:last-child {
    border-radius: 0 var(--radius-lg) 0 0;
}

.compare-table th.highlight-col {
    background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
}

.compare-table td {
    padding: 16px 20px;
    text-align: center;
    font-size: 0.88rem;
    color: var(--color-text-light);
    border-bottom: 1px solid var(--color-border);
}

.compare-table td:first-child {
    text-align: left;
    font-weight: 600;
    color: var(--color-text);
    background: var(--color-bg-gray);
}

.compare-table td.highlight-col {
    background: var(--color-primary-bg);
    color: var(--color-primary-dark);
    font-weight: 500;
}

.compare-table td strong {
    color: var(--color-primary-dark);
}

.compare-table td small {
    display: block;
    font-size: 0.78rem;
    color: var(--color-text-lighter);
    margin-top: 2px;
}

/* === Users Section === */
.users {
    padding: 100px 0;
    background: var(--color-white);
}

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

.user-card {
    padding: 36px 24px;
    border-radius: var(--radius-lg);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    text-align: center;
    transition: var(--transition);
}

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

.user-icon {
    font-size: 2.8rem;
    margin-bottom: 14px;
}

.user-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
}

.user-card p {
    font-size: 0.88rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* === Platforms Section === */
.platforms {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--color-bg-gray) 0%, var(--color-primary-bg) 100%);
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    margin-bottom: 60px;
}

.platform-card {
    text-align: center;
    padding: 32px 16px;
    border-radius: var(--radius-lg);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    transition: var(--transition);
    position: relative;
}

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

.platform-icon {
    font-size: 2.6rem;
    margin-bottom: 14px;
}

.platform-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 6px;
}

.platform-card p {
    font-size: 0.82rem;
    color: var(--color-text-light);
    margin-bottom: 14px;
}

.platform-badge {
    display: inline-block;
    padding: 5px 14px;
    background: var(--color-accent-light);
    color: var(--color-accent);
    border-radius: 14px;
    font-size: 0.78rem;
    font-weight: 600;
}

/* Release Notice */
.release-notice {
    max-width: 700px;
    margin: 0 auto;
}

.release-card {
    text-align: center;
    padding: 48px 40px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-xl);
    color: var(--color-white);
    box-shadow: var(--shadow-xl);
}

.release-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.release-card h3 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 10px;
}

.release-card p {
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: 28px;
}

/* Countdown */
.countdown {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 68px;
}

.countdown-number {
    font-size: 2.4rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 4px;
    font-variant-numeric: tabular-nums;
}

.countdown-label {
    font-size: 0.82rem;
    opacity: 0.8;
}

/* === About Section === */
.about {
    padding: 100px 0;
    background: var(--color-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 18px;
}

.about-text p {
    font-size: 1rem;
    color: var(--color-text-light);
    line-height: 1.9;
    margin-bottom: 24px;
}

.about-text strong {
    color: var(--color-primary);
}

.about-contact {
    padding-top: 8px;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 10px 22px;
    border-radius: 24px;
    border: 2px solid var(--color-primary-light);
    transition: var(--transition);
}

.contact-link:hover {
    background: var(--color-primary-bg);
    border-color: var(--color-primary);
}

.about-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.meta-card {
    text-align: center;
    padding: 28px 16px;
    background: var(--color-primary-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.meta-card:hover {
    background: var(--color-primary-bg2);
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
}

.meta-number {
    display: block;
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-primary-dark);
    margin-bottom: 6px;
}

.meta-label {
    display: block;
    font-size: 0.82rem;
    color: var(--color-text-light);
    line-height: 1.5;
}

/* === Footer === */
.footer {
    background: #2D1F14;
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 0;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    padding-bottom: 40px;
}

.footer-brand {
    text-align: left;
}

.footer-logo {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    margin-bottom: 14px;
}

.footer-brand h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 6px;
}

.footer-brand h3 small {
    font-weight: 400;
    font-size: 0.7rem;
    opacity: 0.6;
    display: block;
}

.footer-brand p {
    font-size: 0.9rem;
    opacity: 0.6;
    margin-top: 4px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.footer-col h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 16px;
}

.footer-col a,
.footer-col span {
    display: block;
    font-size: 0.87rem;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 8px;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--color-primary-lighter);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 20px 0;
    text-align: center;
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.35);
}

.footer-icp {
    margin-top: 8px;
    font-size: 0.78rem;
}

.footer-icp a {
    color: rgba(255, 255, 255, 0.4);
}

.footer-icp a:hover {
    color: var(--color-primary-lighter);
}

/* === Animations === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* === Scroll Reveal (applied via JS) === */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Responsive Design - 移动端适配
   ======================================== */

/* Tablet (≤1024px) */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-visual {
        order: -1;
    }

    .hero-phone {
        width: 200px;
        height: 380px;
    }

    .hero-title {
        font-size: 2.6rem;
    }

    .hero-features {
        justify-content: center;
    }

    .hero-cta {
        justify-content: center;
    }

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

    .platforms-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .users-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .step-track {
        flex-direction: column;
        align-items: center;
        gap: 0;
    }

    .step-arrow {
        transform: rotate(90deg);
        margin: 4px 0;
    }
}

/* Small Tablet (≤768px) */
@media (max-width: 768px) {
    .navbar .container {
        height: 60px;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 260px;
        height: 100vh;
        flex-direction: column;
        background: var(--color-white);
        padding: 80px 30px 40px;
        box-shadow: var(--shadow-xl);
        transition: right var(--transition);
        gap: 8px;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links a {
        font-size: 1rem;
        padding: 12px 16px;
        display: block;
    }

    .menu-toggle {
        display: flex;
    }

    .hero {
        padding: 100px 0 60px;
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-phone {
        width: 170px;
        height: 330px;
        border-radius: 28px;
        padding: 10px;
    }

    .phone-screen {
        border-radius: 20px;
        padding: 20px;
    }

    .section-header h2 {
        font-size: 1.7rem;
    }

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

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

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

    .countdown {
        gap: 12px;
    }

    .countdown-number {
        font-size: 1.8rem;
    }

    .countdown-item {
        min-width: 54px;
    }

    .compare-table-wrapper {
        border-radius: var(--radius-md);
    }

    .about-meta {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }

    .meta-number {
        font-size: 1.4rem;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .release-card {
        padding: 36px 24px;
    }

    .release-card h3 {
        font-size: 1.2rem;
    }
}

/* Mobile (≤480px) */
@media (max-width: 480px) {
    .hero {
        padding: 90px 0 50px;
    }

    .hero-title {
        font-size: 1.7rem;
    }

    .hero-subtitle {
        font-size: 0.92rem;
    }

    .hero-badge {
        font-size: 0.8rem;
        padding: 6px 16px;
    }

    .hero-features {
        gap: 8px;
    }

    .hero-feature-item {
        padding: 8px 14px;
        font-size: 0.8rem;
    }

    .hero-phone {
        width: 140px;
        height: 280px;
        border-radius: 22px;
        padding: 8px;
    }

    .phone-screen {
        border-radius: 16px;
        padding: 16px;
    }

    .phone-text {
        font-size: 0.75rem;
    }

    .phone-text-sub {
        font-size: 0.68rem;
    }

    .btn {
        padding: 12px 28px;
        font-size: 0.95rem;
    }

    .section-header h2 {
        font-size: 1.5rem;
    }

    .section-header p {
        font-size: 0.9rem;
    }

    .platforms-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .platform-card {
        padding: 24px 12px;
    }

    .platform-icon {
        font-size: 2rem;
    }

    .users-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .user-card {
        padding: 24px 14px;
    }

    .user-icon {
        font-size: 2.2rem;
    }

    .about-meta {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }

    .meta-card {
        padding: 20px 10px;
    }

    .meta-number {
        font-size: 1.2rem;
    }

    .meta-label {
        font-size: 0.7rem;
    }

    .compare-table th,
    .compare-table td {
        padding: 12px 14px;
        font-size: 0.8rem;
    }

    .countdown {
        gap: 10px;
    }

    .countdown-number {
        font-size: 1.5rem;
    }

    .countdown-item {
        min-width: 48px;
    }

    .countdown-label {
        font-size: 0.7rem;
    }

    .release-card {
        padding: 28px 18px;
    }

    .release-card h3 {
        font-size: 1rem;
    }

    .feature-card {
        padding: 24px 20px;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}