/* ========================================
   Joy Studio - 贴合中国用户习惯官网样式
   明亮清新风格 + 本土化元素
   ======================================== */

:root {
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --secondary: #ec4899;
    --accent: #06b6d4;
    --success: #10b981;
    --warning: #f59e0b;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --light: #f8fafc;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --white: #ffffff;
    --gradient-1: linear-gradient(135deg, #6366f1 0%, #ec4899 100%);
    --gradient-2: linear-gradient(135deg, #06b6d4 0%, #6366f1 100%);
    --gradient-3: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 24px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(180deg, #f0f4ff 0%, #ffffff 20%, #f8fafc 100%);
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

/* ========================================
   导航栏
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all 0.3s ease;
    background: transparent;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    padding: 12px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-box {
    width: 40px;
    height: 40px;
    background: var(--gradient-1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 0.9rem;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.logo-box.small {
    width: 32px;
    height: 32px;
    font-size: 0.75rem;
}

.logo-text {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-link {
    text-decoration: none;
    color: var(--gray);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 6px 0;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    border-radius: 1px;
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.lang-selector {
    position: relative;
    margin-left: 16px;
    flex-shrink: 0;
}

.lang-current {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: white;
    border: 1.5px solid rgba(99, 102, 241, 0.15);
    border-radius: 100px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.08);
}

.lang-current:hover {
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
}

.lang-flag {
    font-size: 1rem;
}

.lang-name {
    white-space: nowrap;
}

.lang-arrow {
    font-size: 0.6rem;
    color: var(--text-secondary);
    margin-left: 2px;
    transition: transform 0.3s ease;
}

.lang-current[aria-expanded="true"] .lang-arrow {
    transform: rotate(180deg);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(99, 102, 241, 0.1);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    padding: 8px;
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.25s ease;
    z-index: 1000;
}

.lang-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: all 0.2s ease;
    text-align: left;
}

.lang-option:hover {
    background: var(--gradient-1);
    color: white;
}

@media (max-width: 768px) {
    .lang-selector {
        margin-left: auto;
        margin-right: 12px;
    }

    .lang-current {
        padding: 6px 10px;
    }

    .lang-name {
        display: none;
    }

    .lang-dropdown {
        right: -10px;
    }
}

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

.nav-toggle span {
    width: 24px;
    height: 2.5px;
    background: var(--dark);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ========================================
   英雄区域
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 120px 24px 80px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, #6366f1, #a855f7);
    top: -200px;
    right: -100px;
    animation: orbFloat 15s ease-in-out infinite;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #06b6d4, #3b82f6);
    bottom: -150px;
    left: -100px;
    animation: orbFloat 18s ease-in-out infinite reverse;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #ec4899, #f97316);
    top: 40%;
    left: 50%;
    transform: translateX(-50%);
    animation: orbFloat 20s ease-in-out infinite;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    animation: fadeInUp 0.8s ease;
}

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

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--primary);
    margin-bottom: 28px;
    font-weight: 500;
}

.tag-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.9); }
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--dark);
    letter-spacing: -0.02em;
}

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

.hero-desc {
    font-size: 1.1rem;
    color: var(--gray);
    max-width: 560px;
    margin: 0 auto 32px;
    line-height: 1.7;
}

.hero-badges {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 36px;
    flex-wrap: wrap;
}

.badge-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: white;
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--dark);
    font-weight: 500;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.badge-item i {
    color: var(--warning);
    font-size: 0.85rem;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.45);
}

.btn-outline {
    background: white;
    color: var(--dark);
    border: 1.5px solid rgba(0, 0, 0, 0.1);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* 英雄区统计栏 */
.hero-stats-bar {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

.stat-box {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 24px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.stat-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: white;
}

.stat-icon.blue { background: linear-gradient(135deg, #3b82f6, #06b6d4); }
.stat-icon.orange { background: linear-gradient(135deg, #f97316, #f59e0b); }
.stat-icon.green { background: linear-gradient(135deg, #10b981, #22c55e); }

.stat-info {
    text-align: left;
}

.stat-info strong {
    display: block;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark);
    line-height: 1.2;
}

.stat-info span {
    font-size: 0.8rem;
    color: var(--gray);
}

.scroll-down {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--gray-light);
    font-size: 0.8rem;
    animation: bounce 2s infinite;
    z-index: 1;
}

.scroll-down i {
    font-size: 1rem;
}

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

/* ========================================
   通用区域样式
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-label {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--primary);
    margin-bottom: 16px;
    font-weight: 500;
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--dark);
}

.section-desc {
    font-size: 1.05rem;
    color: var(--gray);
    max-width: 520px;
    margin: 0 auto;
}

/* ========================================
   应用展示区域
   ======================================== */
.apps-section {
    padding: 100px 0;
}

.apps-showcase {
    display: flex;
    flex-direction: column;
    gap: 64px;
}

.app-showcase-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    position: relative;
}

.app-showcase-card.reverse {
    direction: rtl;
}

.app-showcase-card.reverse > * {
    direction: ltr;
}

.card-link-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10;
    grid-column: 1 / -1;
    grid-row: 1 / -1;
}

.app-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 360px;
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.map-visual {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(6, 182, 212, 0.08));
    border: 1px solid rgba(59, 130, 246, 0.1);
}

.player-visual {
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.08), rgba(249, 115, 22, 0.08));
    border: 1px solid rgba(236, 72, 153, 0.1);
}

.words-visual {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.08), rgba(59, 130, 246, 0.08));
    border: 1px solid rgba(16, 185, 129, 0.1);
}

.app-icon-wrap {
    position: relative;
}

.app-icon {
    width: 100px;
    height: 100px;
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    position: relative;
    z-index: 1;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.map-icon { background: linear-gradient(135deg, #3b82f6, #06b6d4); }
.player-icon { background: linear-gradient(135deg, #ec4899, #f97316); }
.words-icon { background: linear-gradient(135deg, #10b981, #3b82f6); }

.icon-pulse {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 2px solid rgba(99, 102, 241, 0.2);
    animation: iconPulse 2s infinite;
}

@keyframes iconPulse {
    0% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(1.5); opacity: 0; }
}

.floating-ui {
    position: absolute;
    padding: 10px 16px;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--dark);
    animation: floatUI 4s ease-in-out infinite;
}

.floating-ui i {
    font-size: 1rem;
}

.ui-1 { top: 20%; right: 15%; animation-delay: 0s; }
.ui-2 { bottom: 20%; left: 15%; animation-delay: -2s; }

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

.app-detail {
    padding: 8px 0;
}

.app-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 8px;
}

.app-header h3 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--dark);
}

.app-rating {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: rgba(245, 158, 11, 0.1);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--warning);
}

.app-rating i {
    font-size: 0.75rem;
}

.app-slogan {
    font-size: 1rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 12px;
}

.app-intro {
    color: var(--gray);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.feature-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 24px;
}

.feature-chip {
    padding: 8px 16px;
    background: rgba(99, 102, 241, 0.06);
    border: 1px solid rgba(99, 102, 241, 0.12);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 500;
}

/* 下载区域 */
.download-section {
    padding: 20px;
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: var(--shadow-sm);
}

.download-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 16px;
}

.download-title i {
    color: var(--primary);
}

.download-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: flex-start;
}

.download-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: white;
    border: 1.5px solid rgba(99, 102, 241, 0.15);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--dark);
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
    position: relative;
    z-index: 20;
}

.download-link i {
    font-size: 1.1rem;
    color: var(--primary);
}

.download-link:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    color: var(--primary);
}

.qr-row {
    display: flex;
    gap: 16px;
    justify-content: flex-start;
}

.qr-box {
    text-align: center;
}

.qr-placeholder {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #f0f4ff, #e0e7ff);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 8px;
    border: 1px dashed rgba(99, 102, 241, 0.2);
}

.qr-placeholder.large {
    width: 140px;
    height: 140px;
    flex-direction: column;
    gap: 8px;
    font-size: 2rem;
}

.qr-placeholder.large span {
    font-size: 0.8rem;
    color: var(--gray);
    font-weight: 500;
}

.qr-box > span {
    font-size: 0.75rem;
    color: var(--gray);
    font-weight: 500;
}

/* ========================================
   用户评价区域
   ======================================== */
.reviews-section {
    padding: 100px 0;
    background: linear-gradient(180deg, transparent, rgba(99, 102, 241, 0.03), transparent);
}

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

.review-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 32px;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: all 0.3s ease;
}

.review-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
}

.review-card.featured {
    border: 1.5px solid rgba(99, 102, 241, 0.2);
    position: relative;
}

.review-card.featured::before {
    content: '推荐';
    position: absolute;
    top: -1px;
    right: 24px;
    padding: 4px 12px;
    background: var(--gradient-1);
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.review-stars {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
}

.review-stars i {
    color: var(--warning);
    font-size: 0.85rem;
}

.review-text {
    color: var(--dark);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.reviewer {
    display: flex;
    align-items: center;
    gap: 12px;
}

.reviewer-avatar {
    width: 40px;
    height: 40px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
}

.reviewer-info strong {
    display: block;
    font-size: 0.9rem;
    color: var(--dark);
}

.reviewer-info span {
    font-size: 0.8rem;
    color: var(--gray-light);
}

/* ========================================
   关于我们区域
   ======================================== */
.about-section {
    padding: 100px 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 64px;
    align-items: center;
}

.about-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 48px 32px;
    text-align: center;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(0, 0, 0, 0.04);
    max-width: 320px;
    margin: 0 auto;
}

.about-avatar {
    width: 100px;
    height: 100px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    margin: 0 auto 20px;
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
}

.about-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 4px;
}

.about-card > p {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.about-social {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.social-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: white;
    transition: all 0.3s ease;
}

.social-btn.weixin { background: #07c160; }
.social-btn.weibo { background: #e6162d; }
.social-btn.github { background: var(--dark-light); }

.social-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.about-text .section-title {
    text-align: left;
}

.about-desc {
    color: var(--gray);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 16px;
}

.tech-stack h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 14px;
    color: var(--dark);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-tag {
    padding: 8px 16px;
    background: rgba(99, 102, 241, 0.06);
    border: 1px solid rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 500;
    transition: all 0.3s ease;
}

.tech-tag:hover {
    background: rgba(99, 102, 241, 0.12);
    transform: translateY(-2px);
}

/* ========================================
   联系方式区域
   ======================================== */
.contact-section {
    padding: 100px 0;
    background: linear-gradient(180deg, transparent, rgba(99, 102, 241, 0.03));
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.contact-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 36px 24px;
    text-align: center;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: all 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.1);
    border-color: rgba(99, 102, 241, 0.15);
}

.contact-card.wechat-card {
    grid-row: span 1;
}

.contact-icon-wrap {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: white;
    margin: 0 auto 16px;
    background: var(--gradient-1);
}

.contact-icon-wrap.email { background: linear-gradient(135deg, #3b82f6, #06b6d4); }
.contact-icon-wrap.weibo { background: linear-gradient(135deg, #e6162d, #f97316); }
.contact-icon-wrap.qq { background: linear-gradient(135deg, #12b7f5, #3b82f6); }

.contact-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 6px;
}

.contact-card > p {
    font-size: 0.85rem;
    color: var(--gray);
    margin-bottom: 16px;
}

.wechat-qr {
    margin-top: 8px;
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    background: rgba(99, 102, 241, 0.06);
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.contact-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* ========================================
   页脚
   ======================================== */
.footer {
    padding: 48px 0 24px;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    background: white;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--dark);
}

.footer-links {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
}

.footer-links a {
    text-decoration: none;
    color: var(--gray);
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(0, 0, 0, 0.04);
}

.footer-bottom p {
    color: var(--gray-light);
    font-size: 0.85rem;
    margin-bottom: 4px;
}

.footer-bottom .icp {
    font-size: 0.75rem;
    color: var(--gray-light);
    opacity: 0.7;
}

/* ========================================
   悬浮按钮
   ======================================== */
.float-buttons {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 999;
}

.float-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: white;
    text-decoration: none;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
}

.float-btn.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

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

.float-btn.weixin {
    background: #07c160;
}

.float-btn.top {
    background: var(--dark);
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 968px) {
    .app-showcase-card {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .app-showcase-card.reverse {
        direction: ltr;
    }

    .app-visual {
        min-height: 280px;
        order: -1;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 48px;
        text-align: center;
    }

    .about-text .section-title {
        text-align: center;
    }

    .tech-tags {
        justify-content: center;
    }

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

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

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        flex-direction: column;
        padding: 24px;
        gap: 4px;
        transform: translateY(-150%);
        transition: transform 0.3s ease;
        backdrop-filter: blur(20px);
        box-shadow: var(--shadow-lg);
    }

    .nav-links.active {
        transform: translateY(0);
    }

    .nav-links li {
        width: 100%;
    }

    .nav-link {
        display: block;
        padding: 12px 16px;
        border-radius: var(--radius-md);
    }

    .nav-link:hover,
    .nav-link.active {
        background: rgba(99, 102, 241, 0.06);
    }

    .nav-link::after {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

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

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

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

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

    .hero-stats-bar {
        gap: 12px;
    }

    .stat-box {
        padding: 12px 16px;
        flex: 1;
        min-width: 140px;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-badges {
        gap: 12px;
    }

    .badge-item {
        padding: 8px 14px;
        font-size: 0.85rem;
    }

    .qr-row {
        justify-content: center;
    }

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

    .footer-top {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 100px 16px 60px;
    }

    .container {
        padding: 0 16px;
    }

    .app-icon {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }

    .floating-ui {
        display: none;
    }

    .review-card {
        padding: 24px;
    }

    .about-card {
        padding: 32px 24px;
    }

    .download-section {
        padding: 16px;
    }

    .qr-placeholder {
        width: 64px;
        height: 64px;
    }
}

/* ========================================
   滚动显示动画
   ======================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

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

/* ========================================
   自定义滚动条
   ======================================== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(99, 102, 241, 0.3);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(99, 102, 241, 0.5);
}