/* 沭邑官网 - 主样式表 */
/* 大气科技风格设计 */

/* ===== CSS变量定义 ===== */
:root {
    /* 主色调 */
    --color-primary: #0A0E27;
    --color-primary-light: #1A1F4E;
    --color-primary-dark: #050714;

    /* 强调色 */
    --color-accent: #00D4FF;
    --color-accent-2: #7B2FFF;
    --color-accent-3: #00FF88;

    /* 功能色 */
    --color-success: #00FF88;
    --color-warning: #FFB800;
    --color-danger: #FF4757;

    /* 文字色 */
    --color-text: #E8E8E8;
    --color-text-muted: #8B8B9E;
    --color-text-light: #FFFFFF;

    /* 背景色 */
    --color-bg: #0A0E27;
    --color-bg-card: rgba(26, 31, 78, 0.6);
    --color-bg-card-hover: rgba(26, 31, 78, 0.9);

    /* 边框色 */
    --color-border: rgba(0, 212, 255, 0.2);
    --color-border-hover: rgba(0, 212, 255, 0.5);

    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #0A0E27 0%, #1A1F4E 50%, #0A0E27 100%);
    --gradient-accent: linear-gradient(135deg, #00D4FF 0%, #7B2FFF 100%);
    --gradient-glow: linear-gradient(180deg, rgba(0, 212, 255, 0.1) 0%, transparent 100%);

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.3);

    /* 字体 */
    --font-cn: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    --font-en: "Orbitron", "Rajdhani", "Arial", sans-serif;

    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-cn);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    overflow-x: hidden;
}

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

a:hover {
    color: var(--color-accent-2);
}

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

ul, ol {
    list-style: none;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text-light);
}

/* ===== 背景效果 ===== */
.page-wrapper {
    position: relative;
    min-height: 100vh;
}

/* 网格背景 */
.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
}

/* 渐变光晕 */
.bg-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(150px);
    opacity: 0.3;
    pointer-events: none;
    z-index: 0;
}

.bg-glow-1 {
    top: -200px;
    right: -200px;
    background: var(--color-accent);
}

.bg-glow-2 {
    bottom: -200px;
    left: -200px;
    background: var(--color-accent-2);
}

/* ===== 容器 ===== */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(10, 14, 39, 0.95);
    box-shadow: var(--shadow-md);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    padding: 0 40px;
}

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

.logo-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-accent);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-en);
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text-light);
    box-shadow: var(--shadow-glow);
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text-light);
    letter-spacing: 2px;
}

.logo-sub {
    font-size: 12px;
    color: var(--color-text-muted);
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-item {
    position: relative;
    padding: 10px 0;
}

.nav-link {
    color: var(--color-text);
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.5px;
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    transition: var(--transition-normal);
}

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

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

/* 子品牌导航 */
.brand-dropdown {
    position: relative;
}

.brand-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 220px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 10px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.brand-dropdown:hover .brand-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.brand-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 15px;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.brand-item:hover {
    background: rgba(0, 212, 255, 0.1);
}

.brand-icon {
    width: 32px;
    height: 32px;
    background: var(--gradient-accent);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
}

.brand-info h4 {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-light);
    margin-bottom: 2px;
}

.brand-info span {
    font-size: 11px;
    color: var(--color-text-muted);
}

/* 语言切换 */
.lang-switch {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 8px 12px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.lang-switch a {
    color: var(--color-text-muted);
    font-size: 13px;
    padding: 2px 6px;
    border-radius: 2px;
    transition: var(--transition-fast);
}

.lang-switch a:hover,
.lang-switch a.active {
    color: var(--color-accent);
    background: rgba(0, 212, 255, 0.2);
}

/* ===== 移动端菜单按钮 ===== */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    cursor: pointer;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text-light);
    transition: var(--transition-fast);
}

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

.hero-content {
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    font-size: 13px;
    color: var(--color-accent);
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease forwards;
}

.hero-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse 2s ease infinite;
}

.hero-title {
    font-size: 72px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease 0.1s forwards;
    opacity: 0;
}

.hero-title .highlight {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 20px;
    color: var(--color-text-muted);
    margin-bottom: 40px;
    max-width: 600px;
    animation: fadeInUp 0.6s ease 0.2s forwards;
    opacity: 0;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    animation: fadeInUp 0.6s ease 0.3s forwards;
    opacity: 0;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-accent);
    color: var(--color-text-light);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 50px rgba(0, 212, 255, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-light);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--color-accent);
}

/* Hero 3D效果 */
.hero-visual {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    width: 500px;
    height: 500px;
    animation: float 6s ease-in-out infinite;
}

.hero-circle {
    position: absolute;
    border-radius: 50%;
    border: 2px solid;
    animation: rotate 20s linear infinite;
}

.hero-circle-1 {
    width: 100%;
    height: 100%;
    border-color: rgba(0, 212, 255, 0.3);
}

.hero-circle-2 {
    width: 80%;
    height: 80%;
    top: 10%;
    left: 10%;
    border-color: rgba(123, 47, 255, 0.3);
    animation-direction: reverse;
    animation-duration: 15s;
}

.hero-circle-3 {
    width: 60%;
    height: 60%;
    top: 20%;
    left: 20%;
    border-color: rgba(0, 255, 136, 0.3);
    animation-duration: 10s;
}

.hero-icon {
    position: absolute;
    width: 60px;
    height: 60px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: var(--shadow-md);
}

.hero-icon:nth-child(4) { top: 10%; left: 50%; transform: translateX(-50%); }
.hero-icon:nth-child(5) { top: 50%; right: 5%; transform: translateY(-50%); }
.hero-icon:nth-child(6) { bottom: 10%; left: 50%; transform: translateX(-50%); }
.hero-icon:nth-child(7) { top: 50%; left: 5%; transform: translateY(-50%); }

/* ===== 品牌展示区 ===== */
.brands-section {
    padding: 80px 0;
    background: rgba(0, 0, 0, 0.2);
}

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

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(123, 47, 255, 0.2);
    border-radius: 50px;
    font-size: 13px;
    color: var(--color-accent-2);
    margin-bottom: 16px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
}

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

/* 品牌卡片网格 */
.brands-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
}

.brand-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.brand-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.brand-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.brand-card:hover::before {
    transform: scaleX(1);
}

.brand-card-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    background: var(--gradient-accent);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text-light);
    box-shadow: var(--shadow-glow);
}

.brand-card h3 {
    font-size: 20px;
    margin-bottom: 8px;
}

.brand-card p {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 16px;
}

.brand-card-link {
    font-size: 13px;
    color: var(--color-accent);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

/* ===== 特性展示 ===== */
.features-section {
    padding: 100px 0;
}

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

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px 28px;
    text-align: center;
    transition: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-glow);
}

.feature-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    transition: var(--transition-normal);
}

.feature-card:hover .feature-icon {
    background: var(--gradient-accent);
    border-color: transparent;
    box-shadow: var(--shadow-glow);
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 14px;
    color: var(--color-text-muted);
}

/* ===== 新闻资讯 ===== */
.news-section {
    padding: 100px 0;
    background: rgba(0, 0, 0, 0.2);
}

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

.news-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-normal);
}

.news-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-lg);
}

.news-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary-dark));
}

.news-content {
    padding: 24px;
}

.news-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 12px;
}

.news-tag {
    padding: 4px 10px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 50px;
    color: var(--color-accent);
    font-size: 12px;
}

.news-title {
    font-size: 18px;
    margin-bottom: 12px;
    line-height: 1.4;
}

.news-title a {
    color: var(--color-text-light);
}

.news-title a:hover {
    color: var(--color-accent);
}

.news-excerpt {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ===== 页脚 ===== */
.footer {
    background: var(--color-primary-dark);
    border-top: 1px solid var(--color-border);
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand p {
    color: var(--color-text-muted);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: var(--transition-fast);
}

.footer-social a:hover {
    background: var(--gradient-accent);
    border-color: transparent;
}

.footer-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--color-text-light);
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--color-text-muted);
    font-size: 14px;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-accent);
    padding-left: 5px;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    color: var(--color-text-muted);
}

.footer-bottom a {
    color: var(--color-text-muted);
}

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

/* ===== 关于页面 ===== */
.page-hero {
    padding: 160px 0 80px;
    text-align: center;
    position: relative;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.page-title {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 20px;
    animation: fadeInUp 0.6s ease forwards;
}

.page-desc {
    font-size: 20px;
    color: var(--color-text-muted);
    max-width: 700px;
    margin: 0 auto;
    animation: fadeInUp 0.6s ease 0.1s forwards;
    opacity: 0;
}

/* 关于内容 */
.about-section {
    padding: 80px 0;
}

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

.about-content h2 {
    font-size: 36px;
    margin-bottom: 24px;
}

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

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

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

.stat-number {
    font-family: var(--font-en);
    font-size: 48px;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    color: var(--color-text-muted);
}

.about-image {
    position: relative;
}

.about-image-main {
    width: 100%;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary-dark));
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 120px;
    border: 1px solid var(--color-border);
}

/* ===== 产品页面 ===== */
.products-section {
    padding: 80px 0;
}

.product-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    margin-bottom: 40px;
    transition: var(--transition-normal);
}

.product-card:hover {
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.product-header {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 40px;
    padding: 40px;
    align-items: center;
}

.product-icon {
    width: 200px;
    height: 200px;
    background: var(--gradient-accent);
    border-radius: var(--radius-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 64px;
    color: var(--color-text-light);
    box-shadow: var(--shadow-glow);
}

.product-icon span {
    font-size: 14px;
    font-weight: 600;
    margin-top: 8px;
}

.product-info h2 {
    font-size: 36px;
    margin-bottom: 16px;
}

.product-info .domain {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 50px;
    font-family: var(--font-en);
    font-size: 14px;
    color: var(--color-accent);
    margin-bottom: 16px;
}

.product-info p {
    font-size: 16px;
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 24px;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.product-feature {
    padding: 8px 16px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 50px;
    font-size: 13px;
    color: var(--color-accent);
}

/* ===== 联系页面 ===== */
.contact-section {
    padding: 80px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h2 {
    font-size: 36px;
    margin-bottom: 24px;
}

.contact-info p {
    font-size: 16px;
    color: var(--color-text-muted);
    margin-bottom: 32px;
}

.contact-list li {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 0;
    border-bottom: 1px solid var(--color-border);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.contact-list h4 {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.contact-list p {
    font-size: 16px;
    color: var(--color-text-light);
    margin: 0;
}

.contact-form {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 40px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--color-text-light);
}

.form-control {
    width: 100%;
    padding: 14px 18px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-light);
    font-size: 15px;
    transition: var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-control::placeholder {
    color: var(--color-text-muted);
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

/* ===== 后台管理样式 ===== */
.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 260px;
    background: var(--color-primary-dark);
    border-right: 1px solid var(--color-border);
    padding: 20px;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.admin-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px;
    margin-bottom: 30px;
}

.admin-logo .logo-icon {
    width: 40px;
    height: 40px;
    font-size: 20px;
}

.admin-logo span {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text-light);
}

.admin-menu {
    margin-bottom: 30px;
}

.admin-menu-title {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-muted);
    padding: 10px 15px;
}

.admin-menu a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 15px;
    color: var(--color-text);
    border-radius: var(--radius-md);
    margin-bottom: 5px;
    transition: var(--transition-fast);
}

.admin-menu a:hover,
.admin-menu a.active {
    background: rgba(0, 212, 255, 0.1);
    color: var(--color-accent);
}

.admin-menu i {
    width: 20px;
    text-align: center;
}

.admin-main {
    flex: 1;
    margin-left: 260px;
    padding: 30px;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--color-border);
}

.admin-title {
    font-size: 24px;
    font-weight: 600;
}

.admin-user {
    display: flex;
    align-items: center;
    gap: 15px;
}

.admin-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
}

.admin-card-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* 数据表格 */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.data-table th {
    font-weight: 600;
    color: var(--color-text-muted);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: rgba(0, 0, 0, 0.2);
}

.data-table tr:hover td {
    background: rgba(0, 212, 255, 0.05);
}

/* 表单样式 */
.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

/* 登录页面 */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

login-card {
    width: 100%;
    max-width: 420px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
}

.login-logo {
    text-align: center;
    margin-bottom: 40px;
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(-50%) translateX(0);
    }
    50% {
        transform: translateY(-50%) translateX(20px);
    }
}

/* 渐入动画类 */
.fade-in {
    animation: fadeInUp 0.6s ease forwards;
}

.fade-in-delay-1 { animation-delay: 0.1s; opacity: 0; }
.fade-in-delay-2 { animation-delay: 0.2s; opacity: 0; }
.fade-in-delay-3 { animation-delay: 0.3s; opacity: 0; }
.fade-in-delay-4 { animation-delay: 0.4s; opacity: 0; }

/* ===== 分页 ===== */
.pagination {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}

.pagination ul {
    display: flex;
    gap: 8px;
}

.pagination li a,
.pagination li span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    font-size: 14px;
    transition: var(--transition-fast);
}

.pagination li a:hover,
.pagination li.active span {
    background: var(--gradient-accent);
    border-color: transparent;
    color: var(--color-text-light);
}

/* ===== 响应式设计 ===== */
@media (max-width: 1200px) {
    .brands-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .hero-visual {
        width: 400px;
        height: 400px;
    }
}

@media (max-width: 992px) {
    .navbar-inner {
        padding: 0 20px;
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background: var(--color-primary-dark);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-normal);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .mobile-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 48px;
    }

    .hero-visual {
        display: none;
    }

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

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

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

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

    .product-header {
        grid-template-columns: 1fr;
    }

    .product-icon {
        width: 150px;
        height: 150px;
        font-size: 48px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
    }

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

    .hero-buttons {
        flex-direction: column;
    }

    .section-title {
        font-size: 32px;
    }

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

    .about-stats {
        grid-template-columns: 1fr;
        gap: 20px;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .admin-sidebar {
        width: 100%;
        position: relative;
        height: auto;
    }

    .admin-main {
        margin-left: 0;
    }

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

@media (max-width: 576px) {
    .container {
        padding: 0 15px;
    }

    .page-title {
        font-size: 32px;
    }

    .page-hero {
        padding: 120px 0 60px;
    }

    .btn {
        width: 100%;
    }
}