/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

:root {
    --primary-color: #d2b176;
    --primary-dark: #a58246;
    --primary-light: #e7cfa2;
    --secondary-color: #8f99a8;
    --accent-color: #b8925f;
    --success-color: #c7a66b;
    --warning-color: #b8925f;
    --danger-color: #ef4444;
    --text-primary: #f3f2ef;
    --text-secondary: #c8c6bf;
    --text-light: #94979e;
    --bg-primary: #0e0f12;
    --bg-secondary: #15171c;
    --bg-tertiary: #1e2128;
    --border-color: #31343c;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.28);
    --shadow-md: 0 12px 24px rgba(0, 0, 0, 0.33);
    --shadow-lg: 0 20px 36px rgba(0, 0, 0, 0.38);
    --shadow-xl: 0 30px 56px rgba(0, 0, 0, 0.44);
}

body {
    font-family: 'Noto Sans SC', 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background:
        radial-gradient(circle at 12% 8%, rgba(210, 177, 118, 0.18), transparent 38%),
        radial-gradient(circle at 82% 2%, rgba(143, 153, 168, 0.08), transparent 30%),
        var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    background-color: rgba(14, 15, 18, 0.78);
    box-shadow: var(--shadow-md);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    transition: all 0.45s ease;
    border-bottom: 1px solid var(--border-color);
}

.navbar.scrolled {
    background-color: rgba(14, 15, 18, 0.95);
    box-shadow: var(--shadow-lg);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.navbar .logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 12px;
}

.navbar .logo img {
    height: 42px;
    width: auto;
    border-radius: 8px;
    object-fit: contain;
}

.navbar .logo span {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar .nav-links {
    display: flex;
    list-style: none;
    gap: 5px;
}

.navbar .nav-links li {
    position: relative;
}

.navbar .nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s ease;
    display: block;
}

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

.navbar .nav-links a.active {
    color: var(--primary-color);
    background-color: rgba(199, 166, 107, 0.16);
}

.navbar .mobile-menu {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-primary);
    padding: 8px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.navbar .mobile-menu:hover {
    background-color: var(--bg-tertiary);
    color: var(--primary-color);
}

/* Hero 区域 */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 15% 20%, rgba(210, 177, 118, 0.36), transparent 40%),
        radial-gradient(circle at 75% 10%, rgba(143, 153, 168, 0.18), transparent 34%),
        linear-gradient(150deg, #0d0f13 0%, #171a20 48%, #111318 100%);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.05"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    text-align: center;
    color: #fff;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(210, 177, 118, 0.16);
    backdrop-filter: blur(10px);
    padding: 8px 20px;
    border-radius: 50px;
    margin-bottom: 30px;
    border: 1px solid rgba(231, 207, 162, 0.42);
    animation: fadeInDown 0.8s ease;
}

.hero-badge i {
    color: var(--primary-light);
}

.hero-badge span {
    font-size: 14px;
    font-weight: 500;
}

.hero h1 {
    font-size: 56px;
    font-weight: 900;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero h2 {
    font-size: 24px;
    font-weight: 400;
    margin-bottom: 30px;
    opacity: 0.95;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-description {
    font-size: 18px;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto 40px;
    opacity: 0.95;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-description strong {
    color: var(--primary-light);
    font-weight: 700;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
    animation: fadeInUp 0.8s ease 0.8s both;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(140deg, var(--primary-light), var(--primary-color));
    color: #2b2315;
    padding: 14px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 10px 22px rgba(210, 177, 118, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px) scale(1.01);
    box-shadow: 0 16px 32px rgba(210, 177, 118, 0.38);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    padding: 14px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    border: 1px solid rgba(199, 166, 107, 0.4);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: rgba(199, 166, 107, 0.16);
    border-color: rgba(199, 166, 107, 0.65);
    transform: translateY(-2px) scale(1.01);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: #fff;
    padding: 14px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    border: 2px solid rgba(255, 255, 255, 0.4);
    transition: all 0.3s ease;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.7);
    transform: translateY(-2px);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-number {
    font-size: 36px;
    font-weight: 900;
    margin-bottom: 5px;
    color: var(--primary-light);
}

.stat-label {
    font-size: 14px;
    opacity: 0.9;
}

/* 通用区块样式 */
section {
    padding: 100px 0;
}

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

.section-header h2 {
    font-size: 42px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-header p {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* 产品特点 */
.features {
    background-color: var(--bg-secondary);
}

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

.feature-item {
    background: var(--bg-tertiary);
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: transform 0.45s ease, box-shadow 0.45s ease, border-color 0.45s ease;
    border: 1px solid var(--border-color);
}

.feature-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.feature-icon i {
    font-size: 32px;
    color: #fff;
}

.feature-item h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.feature-item p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: var(--text-secondary);
    font-size: 14px;
}

.feature-list li i {
    color: var(--success-color);
    font-size: 12px;
}

/* 核心优势 */
.advantages {
    background: linear-gradient(145deg, #111319 0%, #181c23 54%, #101218 100%);
}

.advantages-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.advantage-item {
    display: flex;
    gap: 25px;
    background: rgba(25, 28, 35, 0.86);
    padding: 35px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: transform 0.45s ease, box-shadow 0.45s ease, border-color 0.45s ease;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.advantage-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.advantage-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.advantage-icon i {
    font-size: 28px;
    color: #fff;
}

.advantage-text h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.advantage-text p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 15px;
}

/* 成功案例 */
.cases {
    background-color: var(--bg-primary);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.case-item {
    background: var(--bg-secondary);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.45s ease, box-shadow 0.45s ease;
    border: 1px solid var(--border-color);
}

.case-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(231, 207, 162, 0.45);
}

.case-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-image i {
    font-size: 80px;
    color: rgba(255, 255, 255, 0.3);
}

.case-content {
    padding: 30px;
}

.case-content h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.case-tag {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 15px;
}

.case-content .case-tag {
    color: #fff;
}

.case-content p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.case-results {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.result-item {
    text-align: center;
}

.result-number {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.result-label {
    font-size: 12px;
    color: var(--text-secondary);
}

/* 客户评价 */
.testimonials {
    background: linear-gradient(145deg, #13161c 0%, #191d25 54%, #14171d 100%);
    color: #fff;
}

.testimonials .section-header h2 {
    color: #fff;
}

.testimonials .section-header p {
    color: rgba(255, 255, 255, 0.9);
}

.testimonials .section-header h2::after {
    background: linear-gradient(90deg, var(--primary-color), #e8e0cf);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.testimonial-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.testimonial-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.testimonial-content {
    margin-bottom: 25px;
}

.testimonial-stars {
    margin-bottom: 15px;
}

.testimonial-stars i {
    color: var(--primary-light);
    font-size: 16px;
}

.testimonial-content p {
    font-size: 15px;
    line-height: 1.8;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.author-avatar i {
    font-size: 24px;
    color: #fff;
}

.author-info h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 3px;
}

.author-info p {
    font-size: 13px;
    opacity: 0.8;
}

/* 客户端下载 */
.download {
    background-color: var(--bg-secondary);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.download-item {
    background: var(--bg-tertiary);
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform 0.45s ease, box-shadow 0.45s ease, border-color 0.45s ease;
    border: 2px solid var(--border-color);
    position: relative;
}

.download-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.download-item.recommended {
    border-color: var(--primary-light);
    transform: scale(1.05);
    box-shadow: 0 18px 36px rgba(210, 177, 118, 0.18);
}

.download-item.recommended:hover {
    transform: scale(1.05) translateY(-8px);
}

.download-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    color: #2d2518;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    box-shadow: 0 6px 14px rgba(199, 166, 107, 0.28);
}

.download-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: var(--bg-secondary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.download-icon i {
    font-size: 40px;
}

.download-icon .fab.fa-apple {
    color: #e5e7eb;
}

.download-icon .fab.fa-windows {
    color: #60a5fa;
}

.download-icon .fab.fa-android {
    color: #85c9a4;
}

.download-item h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.download-version,
.download-requirement,
.download-size {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.download-features {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 20px 0;
    flex-wrap: wrap;
}

.download-features span {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 13px;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    padding: 6px 12px;
    border-radius: 20px;
}

.download-features span i {
    color: var(--success-color);
    font-size: 11px;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 10px 22px rgba(210, 177, 118, 0.28);
}

.btn-download:hover {
    transform: translateY(-2px) scale(1.01);
    box-shadow: 0 16px 34px rgba(210, 177, 118, 0.36);
}

.download-note {
    display: flex;
    gap: 20px;
    background: linear-gradient(135deg, rgba(199, 166, 107, 0.11), rgba(143, 153, 168, 0.1));
    padding: 25px;
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
}

.note-icon {
    flex-shrink: 0;
}

.note-icon i {
    font-size: 28px;
    color: var(--primary-color);
}

.note-content h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.note-content ul {
    list-style: none;
}

.note-content li {
    padding: 5px 0;
    color: var(--text-secondary);
    font-size: 14px;
    padding-left: 20px;
    position: relative;
}

.note-content li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* 关于我们 */
.about {
    background-color: var(--bg-primary);
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
}

.about-intro,
.about-mission,
.about-vision {
    margin-bottom: 40px;
}

.about-intro h3,
.about-mission h3,
.about-vision h3,
.about-values h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 15px;
    position: relative;
    padding-left: 20px;
}

.about-intro h3::before,
.about-mission h3::before,
.about-vision h3::before,
.about-values h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 5px;
    width: 4px;
    height: 24px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.about-intro p,
.about-mission p,
.about-vision p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 16px;
}

.about-values {
    margin-top: 50px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin-top: 30px;
}

.value-item {
    text-align: center;
    padding: 30px 20px;
    background: var(--bg-secondary);
    border-radius: 12px;
    transition: transform 0.45s ease, box-shadow 0.45s ease, border-color 0.45s ease;
    border: 1px solid var(--border-color);
}

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

.value-item i {
    font-size: 40px;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.value-item h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.value-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 常见问题 */
.faq {
    background-color: var(--bg-secondary);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-tertiary);
    border-radius: 12px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: box-shadow 0.4s ease, border-color 0.4s ease;
}

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

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: var(--bg-secondary);
}

.faq-question h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
}

.faq-question i {
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 25px 20px;
    max-height: 500px;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 15px;
}

/* 联系我们 */
.contact {
    background-color: var(--bg-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info h3,
.contact-form h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-icon i {
    font-size: 22px;
    color: #fff;
}

.contact-text h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.contact-text p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

.contact-form {
    background: var(--bg-secondary);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 15px;
    font-family: inherit;
    transition: all 0.3s ease;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(199, 166, 107, 0.22);
}

@media (max-width: 768px) {
    .form-group input,
    .form-group textarea {
        font-size: 16px;
    }
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

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

/* 页脚 */
.footer {
    background: linear-gradient(150deg, #0c0d11 0%, #141821 58%, #0a0b0f 100%);
    color: #fff;
    padding: 80px 0 30px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: center;
    margin-bottom: 50px;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    max-width: 900px;
    width: 100%;
}

.footer-brand {
    display: flex;
    flex-direction: column;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-logo img {
    height: 42px;
    width: auto;
    border-radius: 8px;
    object-fit: contain;
}

.footer-logo span {
    font-size: 22px;
    font-weight: 700;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    line-height: 1.7;
    max-width: 400px;
}

.footer-contact-info h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #fff;
}

.footer-contact-info .contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    margin-bottom: 12px;
}

.footer-contact-info .contact-item i {
    color: var(--primary-light);
    font-size: 16px;
    width: 20px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 13px;
}

.footer-copyright p a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-copyright p a:hover {
    color: rgba(255, 255, 255, 0.6);
}

.footer-legal {
    display: flex;
    gap: 20px;
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.3s ease;
}

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

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

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

@keyframes gentleFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-6px);
    }
}

@keyframes iconDrift {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-3px) scale(1.02);
    }
}

@keyframes iconGlow {
    0%, 100% {
        filter: drop-shadow(0 0 0 rgba(210, 177, 118, 0));
    }
    50% {
        filter: drop-shadow(0 0 10px rgba(210, 177, 118, 0.22));
    }
}

.hero-badge,
.hero-stats .stat-item {
    animation-name: fadeInDown, gentleFloat;
    animation-duration: 0.8s, 6s;
    animation-delay: 0s, 1.2s;
    animation-fill-mode: both, both;
    animation-timing-function: ease, ease-in-out;
    animation-iteration-count: 1, infinite;
}

.btn-primary .fa-download,
.btn-download .fa-download {
    animation: iconDrift 2.1s ease-in-out infinite, iconGlow 2.8s ease-in-out infinite;
    will-change: transform, filter;
}

.reveal-item {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.75s ease, transform 0.75s ease;
}

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

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation: none !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

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

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

    .download-item.recommended {
        transform: scale(1);
    }

    .download-item.recommended:hover {
        transform: translateY(-8px);
    }

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

    .footer-main {
        grid-template-columns: 1fr;
        gap: 50px;
    }
}

@media (max-width: 768px) {
    .navbar .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: rgba(17, 24, 39, 0.98);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        gap: 0;
        border-top: 1px solid var(--border-color);
        backdrop-filter: blur(10px);
        max-height: 80vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .navbar .nav-links.active {
        display: flex;
    }

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

    .navbar .nav-links a {
        width: 100%;
        padding: 12px 16px;
        border-radius: 8px;
        -webkit-tap-highlight-color: transparent;
    }

    .navbar .mobile-menu {
        display: block;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero h2 {
        font-size: 18px;
    }

    .hero-description {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

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

    .stat-number {
        font-size: 28px;
    }

    .section-header h2 {
        font-size: 32px;
    }

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

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

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

    .footer-content {
        flex-direction: column;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    section {
        padding: 60px 0;
    }
    
    .btn-primary,
    .btn-secondary,
    .btn-outline,
    .btn-download {
        min-width: 140px;
        text-align: center;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .navbar .container {
        padding: 12px 15px;
    }
    
    .navbar .logo img {
        height: 36px;
    }
    
    .navbar .logo span {
        font-size: 16px;
    }
    
    .navbar .mobile-menu {
        font-size: 20px;
    }
    
    .hero h1 {
        font-size: 28px;
    }

    .section-header h2 {
        font-size: 26px;
    }

    .feature-item,
    .advantage-item,
    .download-item,
    .contact-form {
        padding: 25px 20px;
    }

    .contact-form {
        padding: 30px 20px;
    }

    .download-note {
        flex-direction: column;
    }
}