/* ==========================================
   数字科技蓝风格 - 公共样式文件
   ========================================== */

/* 全局重置与基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

:root {
    /* 主色调 - 数字科技蓝系列 */
    --deep-tech-blue: #0A1628;          /* 深海科技蓝 */
    --electric-blue: #00A3FF;           /* 电光蓝 */
    --navy-blue: #1E3A5F;               /* 藏青蓝 */
    --bright-blue: #00D4FF;             /* 亮蓝 */
    --deep-navy: #06101F;               /* 深海蓝（更深） */
    --tech-cyan: #4FC3F7;               /* 科技青 */

    /* 辅助色 */
    --white: #FFFFFF;
    --light-gray: #F5F7FA;
    --gray: #8B95A5;
    --dark-gray: #4A5568;
    --soft-gray: #E2E8F0;               /* 浅边框灰 */

    /* 功能色 */
    --tech-red: #FF4757;                /* 科技红 */
    --success-green: #10B981;
    --warning-orange: #F59E0B;          /* 警示橙 */
    --gold: #FFD700;                    /* 强调金 */

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 163, 255, 0.08);
    --shadow-md: 0 6px 18px rgba(0, 163, 255, 0.15);
    --shadow-lg: 0 12px 32px rgba(0, 163, 255, 0.22);
    --shadow-glow: 0 0 24px rgba(0, 163, 255, 0.35);

    /* 边框圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-pill: 999px;

    /* 间距 */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;

    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, var(--electric-blue) 0%, var(--navy-blue) 100%);
    --gradient-bright: linear-gradient(135deg, var(--bright-blue) 0%, var(--electric-blue) 100%);
    --gradient-deep: linear-gradient(135deg, var(--deep-tech-blue) 0%, var(--navy-blue) 100%);
    --gradient-soft: linear-gradient(135deg, rgba(0, 163, 255, 0.08) 0%, rgba(30, 58, 95, 0.08) 100%);

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--light-gray);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

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

::-webkit-scrollbar-track {
    background: var(--light-gray);
}

::-webkit-scrollbar-thumb {
    background: var(--electric-blue);
    border-radius: var(--radius-pill);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--bright-blue);
}

/* 文本选中样式 */
::selection {
    background: rgba(0, 163, 255, 0.25);
    color: var(--deep-tech-blue);
}

/* 通用容器 */
.container {
    width: 1200px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* 链接样式 */
a {
    color: var(--dark-gray);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--electric-blue);
}

/* 按钮基础样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 32px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
    position: relative;
    overflow: hidden;
    letter-spacing: 0.5px;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: var(--gradient-bright);
    color: var(--white);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background: var(--light-gray);
    color: var(--navy-blue);
    border: 1px solid var(--electric-blue);
}

.btn-secondary:hover {
    background: var(--navy-blue);
    color: var(--white);
}

.btn-lg {
    padding: 16px 48px;
    font-size: 16px;
}

.btn-block {
    width: 100%;
}

/* ==========================================
   导航栏样式
   ========================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--deep-tech-blue);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border-bottom: 1px solid rgba(0, 163, 255, 0.1);
}

.header.scrolled {
    background: linear-gradient(180deg, rgba(10, 22, 40, 0.98) 0%, rgba(10, 22, 40, 0.92) 100%);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 1px;
    background: linear-gradient(90deg, var(--white) 0%, var(--bright-blue) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-text .highlight {
    color: var(--electric-blue);
    -webkit-text-fill-color: var(--electric-blue);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-item {
    position: relative;
    padding: 8px 0;
    font-size: 15px;
    font-weight: 500;
    color: var(--gray);
    transition: all var(--transition-base);
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--electric-blue), var(--bright-blue));
    transition: all var(--transition-base);
    transform: translateX(-50%);
    border-radius: var(--radius-pill);
    box-shadow: 0 0 8px rgba(0, 212, 255, 0.6);
}

.nav-item:hover {
    color: var(--white);
}

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

.nav-item.active {
    color: var(--white);
}

.nav-item.active::after {
    width: 60%;
}

/* ==========================================
   页面主体
   ========================================== */
.main {
    flex: 1;
    padding-top: 70px; /* 导航栏高度 */
}

/* ==========================================
   底部栏样式
   ========================================== */
.footer {
    background: var(--deep-tech-blue);
    border-top: 1px solid rgba(0, 163, 255, 0.2);
    padding: var(--spacing-md) 0;
    margin-top: auto;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--electric-blue), var(--bright-blue), transparent);
    opacity: 0.6;
}

.footer-inner {
    text-align: center;
}

.footer-text {
    font-size: 18px;
    line-height: 40px;
    font-weight: 400;
    color: #FFFFFF;
}

/* ==========================================
   卡片基础样式
   ========================================== */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0, 163, 255, 0.2);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    overflow: hidden;
}

.card:hover {
    border-color: var(--electric-blue);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

/* ==========================================
   表单样式
   ========================================== */
.form-container {
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0, 163, 255, 0.3);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
    max-width: 720px;
    margin: var(--spacing-xl) auto;
    position: relative;
    overflow: hidden;
}

.form-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--electric-blue), var(--bright-blue), var(--tech-cyan));
    background-size: 200% 100%;
    animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
    0% { background-position: 0% 0; }
    100% { background-position: 200% 0; }
}

.form-title {
    font-size: 26px;
    font-weight: 700;
    color: var(--deep-tech-blue);
    text-align: center;
    margin-bottom: var(--spacing-xs);
    background: linear-gradient(135deg, var(--deep-tech-blue), var(--electric-blue));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.form-subtitle {
    text-align: center;
    color: var(--gray);
    font-size: 14px;
    margin-bottom: var(--spacing-lg);
}

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

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 14px;
    font-weight: 500;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-xs);
}

.form-label .required {
    color: var(--tech-red);
    font-weight: 700;
}

.form-label .optional {
    color: var(--gray);
    font-size: 12px;
    font-weight: 400;
    margin-left: 4px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--soft-gray);
    background-color: var(--white);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-family: inherit;
    color: var(--dark-gray);
    transition: all var(--transition-base);
    outline: none;
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
    border-color: var(--electric-blue);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--electric-blue);
    box-shadow: 0 0 0 3px rgba(0, 163, 255, 0.12);
    background-color: var(--white);
}

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

.form-select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2300A3FF' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 40px;
    cursor: pointer;
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.6;
}

.form-input-file {
    width: 100%;
    padding: 16px;
    border: 2px dashed var(--soft-gray);
    border-radius: var(--radius-md);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    background-color: var(--light-gray);
    position: relative;
}

.form-input-file:hover {
    border-color: var(--electric-blue);
    background-color: rgba(0, 163, 255, 0.05);
}

.form-input-file.has-file {
    border-style: solid;
    border-color: var(--success-green);
    background-color: rgba(16, 185, 129, 0.05);
}

.file-hint {
    font-size: 12px;
    color: var(--gray);
    margin-top: 6px;
    text-align: center;
}

.file-preview {
    display: none;
    margin-top: var(--spacing-sm);
    text-align: center;
}

.file-preview img {
    max-width: 100%;
    max-height: 180px;
    border-radius: var(--radius-md);
    border: 1px solid var(--soft-gray);
}

.form-help {
    font-size: 12px;
    color: var(--gray);
    margin-top: 6px;
    line-height: 1.5;
}

.price-tip {
    text-align: center;
    color: var(--dark-gray);
    font-size: 14px;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--gradient-soft);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--electric-blue);
}

.price-tip .highlight {
    color: var(--electric-blue);
    font-weight: 700;
    font-size: 18px;
    margin: 0 4px;
    text-shadow: 0 0 8px rgba(0, 163, 255, 0.3);
}

/* 标签 / 标签输入 */
.tag-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 12px;
    border: 1px solid var(--soft-gray);
    border-radius: var(--radius-md);
    background: var(--white);
    min-height: 50px;
    transition: all var(--transition-base);
}

.tag-group:focus-within {
    border-color: var(--electric-blue);
    box-shadow: 0 0 0 3px rgba(0, 163, 255, 0.12);
}

.tag-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background: var(--gradient-soft);
    border: 1px solid rgba(0, 163, 255, 0.3);
    border-radius: var(--radius-pill);
    font-size: 13px;
    color: var(--navy-blue);
    cursor: pointer;
    transition: all var(--transition-base);
    user-select: none;
}

.tag-item:hover {
    border-color: var(--electric-blue);
    background: rgba(0, 163, 255, 0.15);
}

.tag-item.active {
    background: var(--gradient-primary);
    color: var(--white);
    border-color: var(--electric-blue);
    box-shadow: 0 2px 6px rgba(0, 163, 255, 0.3);
}

.tag-input {
    flex: 1;
    min-width: 100px;
    border: none;
    outline: none;
    padding: 4px;
    font-size: 13px;
    background: transparent;
}

/* 计数器 */
.form-counter {
    text-align: right;
    font-size: 12px;
    color: var(--gray);
    margin-top: 4px;
}

.form-counter.over {
    color: var(--tech-red);
    font-weight: 600;
}

/* 表单区块标题 */
.form-section-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--deep-tech-blue);
    margin: var(--spacing-md) 0 var(--spacing-sm);
    padding-left: 12px;
    border-left: 3px solid var(--electric-blue);
    line-height: 1.4;
}

.form-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--soft-gray), transparent);
    margin: var(--spacing-md) 0;
    border: none;
}

/* 表单协议 */
.form-agreement {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 13px;
    color: var(--gray);
    margin: var(--spacing-md) 0;
    cursor: pointer;
    user-select: none;
}

.form-agreement input[type="checkbox"] {
    margin-top: 3px;
    accent-color: var(--electric-blue);
    cursor: pointer;
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.form-agreement a {
    color: var(--electric-blue);
    text-decoration: none;
}

.form-agreement a:hover {
    text-decoration: underline;
}

/* ==========================================
   页面动画
   ========================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(0, 163, 255, 0.4);
    }
    50% {
        box-shadow: 0 0 0 12px rgba(0, 163, 255, 0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

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

/* ==========================================
   首页样式
   ========================================== */
.home-banner {
    overflow: hidden;
    position: relative;
}

.home-banner img {
    width: 100%;
    display: block;
    transition: transform 8s ease;
}

.home-banner:hover img {
    transform: scale(1.05);
}

.banner-content {
    position: relative;
    z-index: 1;
}

.banner-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 0 20px rgba(0, 163, 255, 0.5);
}

.banner-subtitle {
    font-size: 16px;
    color: var(--gray);
}

.home-section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--deep-tech-blue);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    position: relative;
    padding-bottom: 12px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--electric-blue), var(--bright-blue));
    border-radius: var(--radius-pill);
}

.section-title .accent {
    color: var(--electric-blue);
}

/* 首页信息网格 */
.info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.info-card {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    cursor: pointer;
    position: relative;
}

.info-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--electric-blue), var(--bright-blue));
    transition: width var(--transition-base);
    border-radius: 0 2px 2px 0;
}

.info-card:hover::after {
    width: 100%;
}

.info-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius-md);
    background-color: var(--light-gray);
    transition: transform var(--transition-slow);
}

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

.info-card-image-wrapper {
    overflow: hidden;
    border-radius: var(--radius-md);
}

.info-card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--deep-tech-blue);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color var(--transition-base);
}

.info-card:hover .info-card-title {
    color: var(--electric-blue);
}

.info-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--gray);
    margin-top: auto;
    padding-top: var(--spacing-xs);
    border-top: 1px dashed var(--soft-gray);
}

.info-card-publisher {
    display: flex;
    align-items: center;
    gap: 6px;
}

.publisher-tag {
    color: var(--tech-red);
    font-weight: 500;
}

.info-card-price {
    color: var(--tech-red);
    font-weight: 700;
    font-size: 15px;
}

/* ==========================================
   列表页样式
   ========================================== */
.list-header {
    background: var(--gradient-deep);
    padding: var(--spacing-lg) 0;
    position: relative;
    overflow: hidden;
}

.list-header::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 40px;
    background: linear-gradient(180deg, var(--electric-blue), var(--bright-blue));
    box-shadow: 0 0 12px rgba(0, 212, 255, 0.6);
}

.list-header::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 163, 255, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.list-header-inner {
    position: relative;
    z-index: 1;
}

.list-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--white);
    padding-left: var(--spacing-md);
}

.list-section {
    padding: var(--spacing-xl) 0;
}

/* 列表页信息网格 */
.list-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.list-item-card {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    cursor: pointer;
    position: relative;
}

.list-item-card:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: var(--shadow-lg);
    border-color: var(--electric-blue);
}

.list-item-image-wrapper {
    flex-shrink: 0;
    overflow: hidden;
    border-radius: var(--radius-md);
    position: relative;
}

.list-item-image {
    width: 280px;
    height: 200px;
    object-fit: cover;
    background-color: var(--light-gray);
    transition: transform var(--transition-slow);
    display: block;
}

.list-item-card:hover .list-item-image {
    transform: scale(1.08);
}

.list-item-image-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, transparent 60%, rgba(0, 163, 255, 0.2) 100%);
    z-index: 1;
    pointer-events: none;
}

.list-item-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: var(--spacing-xs);
    min-width: 0;
}

.list-item-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--deep-tech-blue);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color var(--transition-base);
}

.list-item-card:hover .list-item-title {
    color: var(--electric-blue);
}

.list-item-publisher {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--dark-gray);
}

.list-item-price {
    color: var(--tech-red);
    font-weight: 700;
    font-size: 16px;
    margin-top: 4px;
}

.list-item-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 6px;
}

.list-item-tag {
    font-size: 12px;
    padding: 2px 10px;
    background: rgba(0, 163, 255, 0.08);
    color: var(--electric-blue);
    border-radius: var(--radius-pill);
    border: 1px solid rgba(0, 163, 255, 0.2);
}

/* ==========================================
   详情页样式
   ========================================== */
.detail-section {
    padding: var(--spacing-xl) 0;
}

.detail-container {
    display: grid;
    grid-template-columns: 600px 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.detail-image-wrapper {
    position: sticky;
    top: 90px;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.detail-image {
    width: 100%;
    border-radius: var(--radius-lg);
    border: 2px solid rgba(0, 163, 255, 0.3);
    box-shadow: var(--shadow-md);
    background-color: var(--light-gray);
    transition: all var(--transition-base);
    display: block;
}

.detail-image:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
    border-color: var(--electric-blue);
}

.detail-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.detail-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--deep-tech-blue);
    line-height: 1.4;
    position: relative;
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--soft-gray);
}

.detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    align-items: center;
    font-size: 13px;
    color: var(--gray);
    margin-bottom: var(--spacing-xs);
}

.detail-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: var(--gradient-soft);
    border-radius: var(--radius-pill);
    border: 1px solid rgba(0, 163, 255, 0.15);
}

.detail-meta-item .meta-icon {
    color: var(--electric-blue);
}

.detail-price {
    display: flex;
    align-items: baseline;
    gap: 8px;
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, rgba(255, 71, 87, 0.05) 0%, rgba(255, 71, 87, 0.02) 100%);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--tech-red);
}

.detail-price .price-label {
    color: var(--gray);
    font-size: 13px;
}

.detail-price .price-value {
    color: var(--tech-red);
    font-weight: 700;
    font-size: 22px;
    text-shadow: 0 0 12px rgba(255, 71, 87, 0.15);
}

.detail-price .price-suffix {
    color: var(--gray);
    font-size: 12px;
}

.detail-intro {
    background: var(--gradient-soft);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border-left: 3px solid var(--electric-blue);
    position: relative;
}

.detail-intro-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--deep-tech-blue);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: 6px;
}

.detail-intro-title::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 16px;
    background: var(--gradient-primary);
    border-radius: var(--radius-pill);
}

.detail-intro-text {
    font-size: 15px;
    line-height: 1.8;
    color: var(--dark-gray);
    text-indent: 2em;
}

.detail-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: var(--spacing-sm) 0;
}

.detail-tag {
    padding: 4px 12px;
    background: var(--gradient-soft);
    border: 1px solid rgba(0, 163, 255, 0.3);
    border-radius: var(--radius-pill);
    font-size: 13px;
    color: var(--navy-blue);
    transition: all var(--transition-base);
    cursor: default;
}

.detail-tag:hover {
    border-color: var(--electric-blue);
    background: var(--gradient-primary);
    color: var(--white);
    transform: translateY(-1px);
}

.detail-publisher {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--gradient-soft);
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 163, 255, 0.15);
    transition: all var(--transition-base);
}

.detail-publisher:hover {
    border-color: var(--electric-blue);
    transform: translateX(2px);
}

.detail-publisher-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 20px;
    font-weight: 700;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.detail-publisher-info {
    flex: 1;
    min-width: 0;
}

.detail-publisher-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--deep-tech-blue);
}

.detail-publisher-label {
    font-size: 13px;
    color: var(--gray);
    margin-top: 2px;
}

.contact-section {
    border-top: 1px solid rgba(0, 163, 255, 0.2);
    padding-top: var(--spacing-md);
}

.contact-btn {
    width: 100%;
    padding: 16px;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.contact-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.contact-btn:hover::before {
    width: 400px;
    height: 400px;
}

.contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: var(--gradient-bright);
}

.contact-btn:active {
    transform: translateY(0);
}

.contact-phone {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(0, 163, 255, 0.1) 0%, rgba(30, 58, 95, 0.1) 100%);
    border-radius: var(--radius-md);
    text-align: center;
    font-size: 22px;
    font-weight: 700;
    color: var(--electric-blue);
    display: none;
    opacity: 0;
    transition: all var(--transition-base);
    border: 1px solid rgba(0, 163, 255, 0.3);
    letter-spacing: 1px;
}

.contact-phone.show {
    display: block;
    animation: fadeIn 0.3s ease-out forwards;
}

.contact-extra {
    margin-top: var(--spacing-sm);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.contact-extra-item {
    padding: var(--spacing-sm);
    background: var(--light-gray);
    border-radius: var(--radius-md);
    text-align: center;
    font-size: 13px;
    color: var(--dark-gray);
    border: 1px solid var(--soft-gray);
}

.contact-extra-item .label {
    display: block;
    color: var(--gray);
    font-size: 12px;
    margin-bottom: 2px;
}

.contact-extra-item .value {
    color: var(--deep-tech-blue);
    font-weight: 600;
    word-break: break-all;
}

/* ==========================================
   登录/注册页样式
   ========================================== */
.auth-page {
    min-height: calc(100vh - 70px - 80px);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--light-gray) 0%, rgba(0, 163, 255, 0.05) 100%);
    position: relative;
    overflow: hidden;
}

.auth-page::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 163, 255, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.auth-page::after {
    content: '';
    position: absolute;
    bottom: -150px;
    left: -150px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(30, 58, 95, 0.06) 0%, transparent 70%);
    border-radius: 50%;
}

.auth-container {
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
}

.auth-form .form-group {
    margin-bottom: var(--spacing-lg);
}

.auth-form .form-input {
    padding: 14px 16px;
}

.auth-form .btn {
    width: 100%;
    padding: 14px 32px;
    font-size: 16px;
    margin-top: var(--spacing-md);
}

.auth-links {
    text-align: center;
    margin-top: var(--spacing-md);
    color: var(--gray);
    font-size: 14px;
}

.auth-links a {
    color: var(--electric-blue);
    margin-left: var(--spacing-xs);
}

.auth-links a:hover {
    color: var(--bright-blue);
    text-decoration: underline;
}

/* ==========================================
   响应式设计
   ========================================== */
@media (max-width: 1250px) {
    .container {
        width: 100%;
        max-width: 1200px;
    }
}

@media (max-width: 1024px) {
    .info-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .detail-container {
        grid-template-columns: 1fr;
    }

    .detail-image-wrapper {
        position: static;
    }

    .list-item-image {
        width: 200px;
        height: 150px;
    }

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

    .form-container {
        max-width: 100%;
    }
}

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

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

    .list-item-card {
        flex-direction: column;
    }

    .list-item-image {
        width: 100%;
        height: 180px;
    }

    .banner-title {
        font-size: 28px;
    }

    .form-container {
        margin: var(--spacing-md);
        padding: var(--spacing-lg);
    }

    .form-title {
        font-size: 22px;
    }

    .detail-title {
        font-size: 22px;
    }

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