/* ========================================
   Smart APP 官网 - Solarpunk UI 风格
   ======================================== */

/* CSS 变量 */
:root {
    /* Solarpunk 配色 */
    --primary-green: #4a7c43;
    --primary-green-dark: #2d5a27;
    --primary-green-light: #6b9b62;
    --accent-yellow: #f4d03f;
    --accent-orange: #f4a460;
    --accent-coral: #e57373;
    --sky-blue: #87ceeb;
    --sky-gradient-start: #a8e6cf;
    --sky-gradient-end: #88d8b0;
    
    /* 背景色 */
    --bg-cream: #fdfcf7;
    --bg-light-green: #f8fdf5;
    --bg-card: #ffffff;
    
    /* 文字色 */
    --text-primary: #2d3436;
    --text-secondary: #636e72;
    --text-light: #b2bec3;
    
    /* 阴影 */
    --shadow-soft: 0 4px 20px rgba(45, 90, 39, 0.1);
    --shadow-medium: 0 8px 30px rgba(45, 90, 39, 0.15);
    --shadow-strong: 0 12px 40px rgba(45, 90, 39, 0.2);
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* 重置样式 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-cream);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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;
}

/* ========================================
   植物装饰
   ======================================== */
.plant-decoration {
    position: fixed;
    bottom: 0;
    width: 150px;
    height: 300px;
    z-index: 10;
    pointer-events: none;
    opacity: 0.6;
}

.plant-left {
    left: 0;
}

.plant-right {
    right: 0;
    transform: scaleX(-1);
}

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

/* ========================================
   导航栏
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(74, 124, 67, 0.1);
    transition: var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-soft);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary-green-dark);
}

.logo img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
}

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

.nav-links a {
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-green);
    border-radius: 2px;
    transition: var(--transition-fast);
}

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

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

.nav-download-btn {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-light));
    color: white;
    border: none;
    padding: 10px 24px;
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: 0 4px 15px rgba(74, 124, 67, 0.3);
}

.nav-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 124, 67, 0.4);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .nav-download-btn {
        padding: 8px 16px;
        font-size: 0.875rem;
    }
}

/* ========================================
   按钮样式
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
}

.btn-icon {
    width: 20px;
    height: 20px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-light));
    color: white;
    box-shadow: 0 4px 20px rgba(74, 124, 67, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(74, 124, 67, 0.4);
}

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

.btn-secondary:hover {
    background: var(--primary-green);
    color: white;
}

.btn-download {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-dark));
    color: white;
    padding: 18px 48px;
    font-size: 1.125rem;
    box-shadow: 0 8px 30px rgba(74, 124, 67, 0.4);
}

.btn-download:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 12px 40px rgba(74, 124, 67, 0.5);
}

/* ========================================
   Hero 区域
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    padding-top: 80px;
    background: linear-gradient(180deg, #d4f1e8 0%, #a8e6cf 50%, var(--sky-gradient-end) 100%);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.sun {
    position: absolute;
    top: 80px;
    right: 15%;
    width: 120px;
    height: 120px;
    background: radial-gradient(circle, var(--accent-yellow) 0%, rgba(244, 208, 63, 0.3) 70%, transparent 100%);
    border-radius: 50%;
    animation: sunGlow 4s ease-in-out infinite;
}

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

.cloud {
    position: absolute;
    background: white;
    border-radius: 100px;
    opacity: 0.8;
}

.cloud::before, .cloud::after {
    content: '';
    position: absolute;
    background: white;
    border-radius: 50%;
}

.cloud-1 {
    top: 120px;
    left: 10%;
    width: 100px;
    height: 40px;
    animation: cloudFloat 20s linear infinite;
}

.cloud-1::before {
    width: 50px;
    height: 50px;
    top: -25px;
    left: 15px;
}

.cloud-1::after {
    width: 35px;
    height: 35px;
    top: -15px;
    left: 50px;
}

.cloud-2 {
    top: 180px;
    left: 60%;
    width: 80px;
    height: 32px;
    animation: cloudFloat 25s linear infinite reverse;
}

.cloud-2::before {
    width: 40px;
    height: 40px;
    top: -20px;
    left: 10px;
}

.cloud-2::after {
    width: 28px;
    height: 28px;
    top: -12px;
    left: 40px;
}

.cloud-3 {
    top: 250px;
    left: 30%;
    width: 60px;
    height: 24px;
    animation: cloudFloat 18s linear infinite;
}

.cloud-3::before {
    width: 30px;
    height: 30px;
    top: -15px;
    left: 8px;
}

.cloud-3::after {
    width: 22px;
    height: 22px;
    top: -8px;
    left: 30px;
}

@keyframes cloudFloat {
    0% { transform: translateX(-100px); }
    100% { transform: translateX(calc(100vw + 100px)); }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    min-height: calc(100vh - 120px);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--primary-green-dark);
}

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

.hero-text .subtitle {
    font-size: 1.5rem;
    color: var(--primary-green);
    margin-bottom: 16px;
    font-weight: 500;
}

.hero-text .description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* ========================================
   Pixel Watch 4 模型
   ======================================== */
.watch-mockup {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* 表带颜色 - 淡紫色 */
:root {
    --band-color: #a8a4d9;
    --band-color-dark: #8e8ac8;
    --band-color-light: #c4c1e8;
}

/* 上表带 - 曲线收窄设计 */
.watch-band-top {
    width: 80px;
    height: 100px;
    background: var(--band-color);
    border-radius: 40px 40px 0 0;
    position: relative;
    margin-bottom: -20px;
    z-index: 1;
}

.watch-band-top::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 110px;
    height: 50px;
    background: var(--band-color);
    border-radius: 55px 55px 0 0;
}

/* 表身 */
.watch-body {
    position: relative;
    width: 280px;
    height: 280px;
    background: #0a0a0a;
    border-radius: 50%;
    z-index: 10;
    box-shadow: 
        0 0 0 8px #1a1a1a,
        0 20px 50px rgba(0, 0, 0, 0.5);
}

/* 表冠 - 右侧 */
.watch-crown {
    position: absolute;
    right: -16px;
    top: 50%;
    transform: translateY(-50%);
    width: 14px;
    height: 50px;
    background: linear-gradient(90deg, #666, #999, #666);
    border-radius: 4px;
    z-index: 20;
    box-shadow: 3px 0 8px rgba(0, 0, 0, 0.3);
}

.watch-crown::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 2px;
    width: 10px;
    height: 34px;
    background: linear-gradient(90deg, #555, #888, #555);
    border-radius: 3px;
}

/* 屏幕 */
.watch-screen {
    position: absolute;
    top: 8px;
    left: 8px;
    right: 8px;
    bottom: 8px;
    background: #000;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px;
}

/* 应用图标 */
.watch-app-icon {
    width: 72px;
    height: 72px;
    margin-bottom: 12px;
}

.watch-app-icon img {
    width: 100%;
    height: 100%;
    border-radius: 18px;
}

/* 应用名称 */
.watch-app-name {
    color: white;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 4px;
}

/* 应用描述 */
.watch-app-desc {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

/* 屏幕反光 */
.watch-glare {
    position: absolute;
    top: 8px;
    left: 8px;
    right: 8px;
    bottom: 8px;
    border-radius: 50%;
    background: linear-gradient(
        145deg,
        rgba(255, 255, 255, 0.1) 0%,
        rgba(255, 255, 255, 0.02) 30%,
        transparent 50%
    );
    pointer-events: none;
}

/* 下表带 - 曲线展开设计 */
.watch-band-bottom {
    width: 80px;
    height: 120px;
    background: var(--band-color);
    border-radius: 0 0 40px 40px;
    position: relative;
    margin-top: -20px;
    z-index: 1;
}

.watch-band-bottom::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 110px;
    height: 50px;
    background: var(--band-color);
    border-radius: 0 0 55px 55px;
}

/* 手表悬浮动画 */
@keyframes watchFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.watch-mockup {
    animation: watchFloat 4s ease-in-out infinite;
    filter: drop-shadow(0 25px 50px rgba(0, 0, 0, 0.3));
}

.floating-leaf {
    position: absolute;
    font-size: 2rem;
    animation: leafFloat 6s ease-in-out infinite;
}

.leaf-1 {
    top: 10%;
    left: -20px;
    animation-delay: 0s;
}

.leaf-2 {
    top: 50%;
    right: -30px;
    animation-delay: 2s;
}

.leaf-3 {
    bottom: 20%;
    left: -40px;
    animation-delay: 4s;
}

@keyframes leafFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(10deg); }
}

.wave-divider {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    line-height: 0;
}

.wave-divider svg {
    width: 100%;
    height: 120px;
}

@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: 40px;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .hero-text .description {
        margin: 0 auto 32px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-image {
        order: -1;
        margin-bottom: 20px;
    }
    
    .watch-body {
        width: 180px;
        height: 180px;
    }
    
    .watch-app-icon {
        width: 54px;
        height: 54px;
    }
    
    .watch-app-name {
        font-size: 1.125rem;
    }
    
    .watch-app-desc {
        font-size: 0.75rem;
    }
    
    .watch-band-top {
        width: 60px;
        height: 75px;
    }
    
    .watch-band-top::before {
        width: 85px;
        height: 40px;
    }
    
    .watch-band-bottom {
        width: 60px;
        height: 90px;
    }
    
    .watch-band-bottom::before {
        width: 85px;
        height: 40px;
    }
    
    .watch-crown {
        right: -12px;
        width: 10px;
        height: 38px;
    }
    
    .watch-crown::before {
        top: 6px;
        width: 7px;
        height: 26px;
    }
}

/* ========================================
   功能特点
   ======================================== */
.features {
    padding: 100px 0;
    background: var(--bg-light-green);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    background: rgba(74, 124, 67, 0.1);
    color: var(--primary-green);
    padding: 8px 20px;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary-green-dark);
    margin-bottom: 12px;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

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

.feature-card {
    background: white;
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(74, 124, 67, 0.1);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
}

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

.feature-card h3 {
    font-size: 1.25rem;
    color: var(--primary-green-dark);
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

@media (max-width: 968px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
}

/* ========================================
   应用展示
   ======================================== */
.showcase {
    padding: 100px 0;
    background: white;
}

.showcase-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.showcase-text h2 {
    font-size: 2.5rem;
    color: var(--primary-green-dark);
    margin: 16px 0;
}

.showcase-text > p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.showcase-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.showcase-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.0625rem;
}

.check-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-light));
    color: white;
    border-radius: 50%;
    font-size: 0.875rem;
    font-weight: 700;
}

.showcase-image {
    position: relative;
}

.app-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    max-width: 400px;
    margin: 0 auto;
}

.app-card {
    background: white;
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-medium);
    transition: var(--transition-normal);
    border: 2px solid transparent;
}

.app-card:hover {
    transform: translateY(-5px) scale(1.02);
    border-color: var(--primary-green-light);
}

.app-card-1 { background: linear-gradient(135deg, #e8f5e9, #c8e6c9); }
.app-card-2 { background: linear-gradient(135deg, #fff3e0, #ffe0b2); }
.app-card-3 { background: linear-gradient(135deg, #e3f2fd, #bbdefb); }
.app-card-4 { background: linear-gradient(135deg, #fce4ec, #f8bbd9); }

.app-icon {
    font-size: 3rem;
    margin-bottom: 12px;
}

.app-card span {
    font-weight: 600;
    color: var(--text-primary);
}

@media (max-width: 968px) {
    .showcase-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .showcase-image {
        order: -1;
    }
}

/* ========================================
   下载区域
   ======================================== */
.download {
    position: relative;
    padding: 120px 0;
    background: linear-gradient(180deg, var(--bg-light-green) 0%, #d4f1e8 100%);
    overflow: hidden;
}

.download-bg {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    pointer-events: none;
}

.grass {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 40'%3E%3Cpath d='M0,40 Q5,20 10,40 Q15,15 20,40 Q25,25 30,40 Q35,10 40,40 Q45,20 50,40 Q55,15 60,40 Q65,25 70,40 Q75,10 80,40 Q85,20 90,40 Q95,15 100,40 L100,40 L0,40 Z' fill='%234a7c43'/%3E%3C/svg%3E") repeat-x;
    background-size: 100px 40px;
    background-position: bottom;
}

.download-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.download-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 24px;
    background: white;
    border-radius: var(--radius-xl);
    padding: 16px;
    box-shadow: var(--shadow-medium);
}

.download-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.download h2 {
    font-size: 2.5rem;
    color: var(--primary-green-dark);
    margin-bottom: 12px;
}

.download > .container > .download-content > p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.download-info {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.download-info span {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.download-info .divider {
    color: var(--text-light);
}

.download-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ========================================
   关于我们
   ======================================== */
.about {
    padding: 100px 0;
    background: white;
}

.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text h2 {
    font-size: 2.5rem;
    color: var(--primary-green-dark);
    margin: 16px 0 24px;
}

.about-text p {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.stat-item {
    background: linear-gradient(135deg, var(--bg-light-green), #e8f5e9);
    padding: 32px;
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid rgba(74, 124, 67, 0.2);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-green);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
}

@media (max-width: 968px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 576px) {
    .about-stats {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   页脚
   ======================================== */
.footer {
    position: relative;
    background: var(--primary-green-dark);
    color: white;
}

.footer-wave {
    position: absolute;
    top: -50px;
    left: 0;
    right: 0;
    line-height: 0;
}

.footer-wave svg {
    width: 100%;
    height: 100px;
}

.footer-content {
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 48px;
}

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

.footer-brand .logo img {
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
}

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

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1.125rem;
    margin-bottom: 20px;
    color: white;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: white;
    padding-left: 8px;
}

.footer-contact p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 12px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

@media (max-width: 968px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* 滚动显示动画 */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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