/* ==========================================
   尚美&莎莎容颜定制 - 主样式文件
   Shangmei & Shasha Beauty Studio
   ========================================== */

/* ==========================================
   1. CSS 变量定义
   ========================================== */
:root {
    /* 主色调 - 轻奢深沉 */
    --primary-dark: #0C0D10;
    --primary-gray: #1C1F26;
    --primary-gray-light: #2A2D36;

    /* 点缀色 - 香槟金 */
    --accent-gold: #C9A46A;
    --accent-gold-light: #D4B87A;
    --accent-gold-dark: #B8935A;
    --accent-gold-muted: rgba(201, 164, 106, 0.15);

    /* 背景色 - 暖白雾灰 */
    --bg-warm-white: #F7F4EF;
    --bg-fog-gray: #EFEDE8;
    --bg-cream: #FAF8F5;
    --bg-white: #FFFFFF;

    /* 辅助色 - 柔肤粉 */
    --accent-blush: #E7C9C2;
    --accent-blush-light: #F2DDD8;
    --accent-blush-muted: rgba(231, 201, 194, 0.2);

    /* 文字色 */
    --text-primary: #1C1F26;
    --text-secondary: #5A5D66;
    --text-light: #8A8D96;
    --text-white: #FFFFFF;
    --text-gold: #C9A46A;

    /* 边框 */
    --border-gold: rgba(201, 164, 106, 0.3);
    --border-subtle: rgba(28, 31, 38, 0.08);
    --border-light: rgba(28, 31, 38, 0.12);

    /* 阴影 */
    --shadow-soft: 0 4px 20px rgba(12, 13, 16, 0.06);
    --shadow-medium: 0 8px 40px rgba(12, 13, 16, 0.1);
    --shadow-strong: 0 16px 60px rgba(12, 13, 16, 0.15);
    --shadow-gold: 0 4px 20px rgba(201, 164, 106, 0.25);
    --shadow-gold-strong: 0 8px 30px rgba(201, 164, 106, 0.35);

    /* 字体 */
    --font-primary: 'PingFang SC', 'Noto Serif SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-english: 'Playfair Display', 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;

    /* 间距系统 */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 40px;
    --space-xl: 60px;
    --space-xxl: 100px;
    --space-section: 120px;

    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-bounce: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);

    /* 布局 */
    --container-width: 1200px;
    --container-narrow: 900px;
    --header-height: 80px;
    --header-height-mobile: 70px;
}

/* ==========================================
   2. 基础重置
   ========================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-warm-white);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ==========================================
   3. 工具类
   ========================================== */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.container-narrow {
    max-width: var(--container-narrow);
}

.text-center { text-align: center; }
.text-gold { color: var(--accent-gold); }
.text-light { color: var(--text-light); }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* 滚动动画 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.animate-delay-1 { transition-delay: 0.1s; }
.animate-delay-2 { transition-delay: 0.2s; }
.animate-delay-3 { transition-delay: 0.3s; }
.animate-delay-4 { transition-delay: 0.4s; }

/* ==========================================
   4. 排版
   ========================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 500;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 {
    font-family: var(--font-english);
    font-size: clamp(2.5rem, 5vw, 4rem);
    letter-spacing: -0.02em;
}

h2 {
    font-family: var(--font-primary);
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
}

h4 {
    font-size: 1.125rem;
}

p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-tag {
    display: inline-block;
    font-family: var(--font-english);
    font-size: 0.875rem;
    color: var(--accent-gold);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
}

.section-header h2 {
    margin-bottom: var(--space-sm);
}

.section-header p {
    max-width: 600px;
    margin: 0 auto;
}

.section-divider {
    width: 60px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
    margin: var(--space-md) auto;
}

/* ==========================================
   5. 按钮
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 14px 32px;
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent-gold);
    color: var(--primary-dark);
}

.btn-primary:hover {
    background: var(--accent-gold-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
}

.btn-secondary {
    background: transparent;
    color: var(--text-white);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--accent-gold);
    border: 1px solid var(--border-gold);
}

.btn-outline:hover {
    background: var(--accent-gold-muted);
    border-color: var(--accent-gold);
}

.btn-dark {
    background: var(--primary-gray);
    color: var(--text-white);
}

.btn-dark:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-ghost {
    background: transparent;
    color: var(--text-primary);
    padding: 10px 20px;
}

.btn-ghost:hover {
    color: var(--accent-gold);
}

.btn-sm {
    padding: 10px 20px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 18px 40px;
    font-size: 1rem;
}

/* ==========================================
   6. 顶部导航栏
   ========================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(12, 13, 16, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.header.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.logo a {
    display: flex;
    flex-direction: column;
    color: var(--text-white);
    transition: opacity var(--transition-normal);
}

.logo a:hover {
    opacity: 0.8;
}

.logo-text {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--accent-gold);
    letter-spacing: 0.05em;
}

.logo-sub {
    font-family: var(--font-english);
    font-size: 0.625rem;
    color: var(--text-light);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-top: 2px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-menu a {
    position: relative;
    font-size: 0.875rem;
    color: var(--text-white);
    letter-spacing: 0.02em;
    padding: 8px 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-gold);
    transition: width var(--transition-normal);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--accent-gold);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.lang-switch {
    font-size: 0.8125rem;
    color: var(--text-light);
    padding: 6px 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
}

.lang-switch:hover {
    color: var(--accent-gold);
    border-color: var(--accent-gold);
}

.nav-cta {
    background: var(--accent-gold);
    color: var(--primary-dark);
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-normal);
}

.nav-cta:hover {
    background: var(--accent-gold-light);
    transform: translateY(-1px);
}

/* 移动端菜单 */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 24px;
    height: 24px;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-white);
    transition: all var(--transition-normal);
}

.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);
}

/* ==========================================
   7. Hero 区域
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(12, 13, 16, 0.85) 0%,
        rgba(28, 31, 38, 0.7) 50%,
        rgba(12, 13, 16, 0.85) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: var(--space-xxl) var(--space-md);
    max-width: 800px;
}

.hero-tag {
    display: inline-block;
    font-family: var(--font-english);
    font-size: 0.8125rem;
    color: var(--accent-gold);
    letter-spacing: 0.25em;
    text-transform: uppercase;
    margin-bottom: var(--space-md);
    padding: 8px 20px;
    border: 1px solid var(--border-gold);
    border-radius: var(--radius-full);
}

.hero h1 {
    color: var(--text-white);
    margin-bottom: var(--space-md);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero h1 span {
    color: var(--accent-gold);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.stat-number {
    font-family: var(--font-english);
    font-size: 2.5rem;
    font-weight: 500;
    color: var(--accent-gold);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 0.05em;
}

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    animation: float 2s ease-in-out infinite;
}

.scroll-indicator::after {
    content: '';
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--accent-gold), transparent);
}

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

/* ==========================================
   8. 服务卡片网格
   ========================================== */
.services-section {
    padding: var(--space-section) 0;
    background: var(--bg-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
}

.service-card {
    position: relative;
    background: var(--bg-warm-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

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

.service-image {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.service-card:hover .service-image img {
    transform: scale(1.05);
}

.service-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(12, 13, 16, 0.6), transparent 50%);
}

.service-content {
    padding: var(--space-md);
}

.service-content h3 {
    margin-bottom: 4px;
    color: var(--text-primary);
}

.service-subtitle {
    display: block;
    font-family: var(--font-english);
    font-size: 0.75rem;
    color: var(--accent-gold);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
}

.service-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    color: var(--accent-gold);
    font-weight: 500;
    transition: gap var(--transition-normal);
}

.service-card:hover .service-link {
    gap: 10px;
}

/* ==========================================
   9. 关于预览区域
   ========================================== */
.about-preview {
    padding: var(--space-section) 0;
    background: var(--bg-fog-gray);
}

.about-preview-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.about-preview-image {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.about-preview-image img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}

.about-preview-image::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: 20px;
    bottom: 20px;
    border: 1px solid var(--border-gold);
    border-radius: var(--radius-xl);
    z-index: -1;
}

.about-preview-text h2 {
    margin-bottom: var(--space-md);
}

.about-preview-text p {
    margin-bottom: var(--space-md);
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
    margin: var(--space-lg) 0;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.about-feature i {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gold-muted);
    color: var(--accent-gold);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}

.about-feature span {
    font-size: 0.9375rem;
    color: var(--text-primary);
}

/* ==========================================
   10. 优势特点
   ========================================== */
.features-section {
    padding: var(--space-section) 0;
    background: var(--primary-gray);
}

.features-section .section-header h2,
.features-section .section-header p {
    color: var(--text-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.feature-card {
    text-align: center;
    padding: var(--space-lg);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--border-gold);
    transform: translateY(-4px);
}

.feature-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
    background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-dark));
    border-radius: var(--radius-lg);
    font-size: 1.5rem;
    color: var(--primary-dark);
}

.feature-card h3 {
    color: var(--text-white);
    margin-bottom: var(--space-sm);
}

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

/* ==========================================
   11. 评价/口碑
   ========================================== */
.testimonials-section {
    padding: var(--space-section) 0;
    background: var(--bg-white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.testimonial-card {
    background: var(--bg-warm-white);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    transition: all var(--transition-normal);
}

.testimonial-card:hover {
    box-shadow: var(--shadow-soft);
    border-color: var(--border-gold);
}

.testimonial-rating {
    display: flex;
    gap: 4px;
    margin-bottom: var(--space-sm);
}

.testimonial-rating i {
    color: var(--accent-gold);
    font-size: 0.875rem;
}

.testimonial-text {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-md);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: var(--accent-gold-muted);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-english);
    font-size: 1.125rem;
    color: var(--accent-gold);
    font-weight: 500;
}

.author-info h4 {
    font-size: 0.9375rem;
    margin-bottom: 2px;
}

.author-info span {
    font-size: 0.8125rem;
    color: var(--text-light);
}

/* ==========================================
   12. CTA 区域
   ========================================== */
.cta-section {
    padding: var(--space-xl) 0;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-gray));
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    color: var(--text-white);
    margin-bottom: var(--space-sm);
}

.cta-content p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-lg);
}

.cta-buttons {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ==========================================
   13. 页脚
   ========================================== */
.footer {
    background: var(--primary-dark);
    padding: var(--space-xl) 0 var(--space-md);
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-xl);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .logo-text {
    margin-bottom: var(--space-sm);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
    margin-bottom: var(--space-md);
    max-width: 280px;
}

.footer-social {
    display: flex;
    gap: var(--space-sm);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    color: var(--text-light);
    transition: all var(--transition-normal);
}

.footer-social a:hover {
    background: var(--accent-gold);
    color: var(--primary-dark);
}

.footer-column h4 {
    color: var(--text-white);
    font-size: 0.9375rem;
    margin-bottom: var(--space-md);
    font-weight: 500;
}

.footer-column ul li {
    margin-bottom: var(--space-sm);
}

.footer-column a {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
    transition: color var(--transition-normal);
}

.footer-column a:hover {
    color: var(--accent-gold);
}

.footer-contact-item {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

.footer-contact-item i {
    color: var(--accent-gold);
    width: 16px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-md);
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.8125rem;
}

.footer-bottom a {
    color: var(--accent-gold);
}

.footer-bottom a:hover {
    text-decoration: underline;
}

.footer-legal {
    display: flex;
    gap: var(--space-md);
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.8125rem;
}

/* ==========================================
   14. 页面横幅
   ========================================== */
.page-banner {
    position: relative;
    padding: calc(var(--header-height) + var(--space-xl)) 0 var(--space-xl);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-gray));
    text-align: center;
    overflow: hidden;
}

.page-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23C9A46A' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.page-banner h1 {
    color: var(--text-white);
    margin-bottom: var(--space-sm);
}

.page-banner p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.125rem;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.breadcrumb a,
.breadcrumb span {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

.breadcrumb a:hover {
    color: var(--accent-gold);
}

.breadcrumb span:last-child {
    color: var(--accent-gold);
}

/* ==========================================
   15. 折叠面板 (Accordion)
   ========================================== */
.accordion {
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.accordion-item {
    border-bottom: 1px solid var(--border-subtle);
}

.accordion-item:last-child {
    border-bottom: none;
}

.accordion-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md);
    background: var(--bg-white);
    cursor: pointer;
    transition: background var(--transition-normal);
}

.accordion-header:hover {
    background: var(--bg-fog-gray);
}

.accordion-header h3 {
    font-size: 1rem;
    font-weight: 500;
}

.accordion-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-gold);
    transition: transform var(--transition-normal);
}

.accordion-item.active .accordion-icon {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.accordion-item.active .accordion-content {
    max-height: 2000px;
}

.accordion-body {
    padding: var(--space-md);
    background: var(--bg-fog-gray);
}

/* ==========================================
   16. 标签页 (Tabs)
   ========================================== */
.tabs {
    margin-bottom: var(--space-lg);
}

.tabs-nav {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
    padding: 6px;
    background: var(--bg-fog-gray);
    border-radius: var(--radius-lg);
}

.tab-btn {
    padding: 12px 24px;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    background: transparent;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--bg-white);
    color: var(--accent-gold);
    box-shadow: var(--shadow-soft);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

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

/* ==========================================
   17. 筛选标签 (Filter Chips)
   ========================================== */
.filter-chips {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
    margin-bottom: var(--space-lg);
}

.filter-chip {
    padding: 8px 20px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    background: var(--bg-white);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.filter-chip:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

.filter-chip.active {
    background: var(--accent-gold);
    border-color: var(--accent-gold);
    color: var(--primary-dark);
}

/* ==========================================
   18. 表单样式
   ========================================== */
.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    font-weight: 500;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 14px 16px;
    font-size: 0.9375rem;
    color: var(--text-primary);
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 3px var(--accent-gold-muted);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-light);
}

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

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238A8D96' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 44px;
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    cursor: pointer;
}

.form-checkbox input {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-gold);
    cursor: pointer;
}

.form-checkbox span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.contact-form {
    background: var(--bg-white);
    padding: var(--space-lg);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-subtle);
}

/* ==========================================
   19. 地图
   ========================================== */
.map-container {
    border-radius: var(--radius-xl);
    overflow: hidden;
    height: 400px;
    box-shadow: var(--shadow-soft);
}

.map-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* ==========================================
   20. 悬浮按钮
   ========================================== */
.floating-cta {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    z-index: 999;
}

.floating-btn {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gold);
    color: var(--primary-dark);
    border-radius: var(--radius-full);
    font-size: 1.25rem;
    box-shadow: var(--shadow-gold);
    transition: all var(--transition-normal);
}

.floating-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-gold-strong);
}

.floating-btn.phone {
    background: var(--primary-gray);
    color: var(--text-white);
}

/* ==========================================
   21. 价格表
   ========================================== */
.price-table {
    width: 100%;
    border-collapse: collapse;
}

.price-table th,
.price-table td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--border-subtle);
}

.price-table th {
    background: var(--bg-fog-gray);
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.price-table td {
    font-size: 0.9375rem;
}

.price-table tr:hover td {
    background: var(--bg-fog-gray);
}

.price-value {
    color: var(--accent-gold);
    font-weight: 500;
}

.price-note {
    font-size: 0.8125rem;
    color: var(--text-light);
}

/* ==========================================
   22. 流程时间轴
   ========================================== */
.process-timeline {
    position: relative;
    padding-left: 40px;
}

.process-timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-gold), var(--border-subtle));
}

.process-step {
    position: relative;
    padding-bottom: var(--space-lg);
}

.process-step:last-child {
    padding-bottom: 0;
}

.step-number {
    position: absolute;
    left: -40px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gold);
    color: var(--primary-dark);
    border-radius: var(--radius-full);
    font-family: var(--font-english);
    font-size: 0.875rem;
    font-weight: 600;
}

.step-content h3 {
    margin-bottom: var(--space-xs);
}

.step-content p {
    font-size: 0.9375rem;
}

/* ==========================================
   23. 案例对比
   ========================================== */
.case-card {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-subtle);
}

.case-image {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.case-before,
.case-after {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
}

.case-before img,
.case-after img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.case-label {
    position: absolute;
    bottom: 10px;
    left: 10px;
    padding: 4px 12px;
    background: rgba(0, 0, 0, 0.6);
    color: var(--text-white);
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.case-content {
    padding: var(--space-md);
}

.case-content h3 {
    margin-bottom: var(--space-sm);
}

.case-tags {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
    margin-bottom: var(--space-sm);
}

.case-tag {
    padding: 4px 10px;
    background: var(--accent-gold-muted);
    color: var(--accent-gold);
    font-size: 0.75rem;
    border-radius: var(--radius-full);
}

.case-quote {
    font-style: italic;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    padding-left: var(--space-sm);
    border-left: 2px solid var(--accent-gold);
}

/* ==========================================
   24. 博客列表
   ========================================== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-md);
}

.blog-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-subtle);
    transition: all var(--transition-normal);
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
}

.blog-image {
    aspect-ratio: 16/9;
    overflow: hidden;
}

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.blog-card:hover .blog-image img {
    transform: scale(1.05);
}

.blog-content {
    padding: var(--space-md);
}

.blog-meta {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.blog-meta span {
    font-size: 0.8125rem;
    color: var(--text-light);
}

.blog-content h3 {
    margin-bottom: var(--space-sm);
    transition: color var(--transition-normal);
}

.blog-card:hover .blog-content h3 {
    color: var(--accent-gold);
}

.blog-excerpt {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ==========================================
   25. 免责声明
   ========================================== */
.disclaimer {
    padding: var(--space-md);
    background: var(--bg-fog-gray);
    border-left: 3px solid var(--accent-gold);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin: var(--space-lg) 0;
}

.disclaimer p {
    font-size: 0.8125rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* ==========================================
   26. 响应式设计
   ========================================== */
@media (max-width: 1024px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--primary-dark);
        padding: var(--space-md);
        gap: 0;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu li {
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .nav-menu a {
        display: block;
        padding: var(--space-sm) 0;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-cta {
        display: none;
    }

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

    .footer-main {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-lg);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: var(--header-height-mobile);
        --space-section: 80px;
    }

    .hero-content {
        padding: var(--space-xl) var(--space-md);
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
    }

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

    .about-preview-image::before {
        display: none;
    }

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

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-main {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

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

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

    .floating-cta {
        bottom: 20px;
        right: 20px;
    }

    .floating-btn {
        width: 50px;
        height: 50px;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
    }

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

    .tabs-nav {
        flex-direction: column;
    }

    .tab-btn {
        width: 100%;
        text-align: center;
    }

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

/* ==========================================
   27. 打印样式
   ========================================== */
@media print {
    .header,
    .floating-cta,
    .footer {
        display: none;
    }

    .page-banner {
        padding-top: 0;
        background: none;
        color: var(--text-primary);
    }

    .page-banner h1,
    .page-banner p {
        color: var(--text-primary);
    }
}