/* ============================================
   观元易知网 - 前端主题样式 v3.1
   ============================================ */

:root {
    /* === 国风主色 === */
    --zhusha: #C23A30;           /* 朱砂红 - 主强调色 */
    --zhusha-light: #D8584E;     /* 朱砂浅 */
    --zhusha-dark: #9E2B22;      /* 朱砂深 */

    --jin: #D4A843;              /* 金色 - 装饰、高亮 */
    --jin-light: #E8C878;        /* 浅金 */
    --jin-dark: #B08D2F;         /* 深金 */

    --mo: #1A1A1A;               /* 墨色 - 主文字 */
    --mo-light: #333333;         /* 浅墨 */
    --mo-muted: #666666;         /* 灰墨 */

    /* === 宣纸色系 === */
    --xuanzhi: #F7F3E9;          /* 宣纸白 - 主背景 */
    --xuanzhi-dark: #EDE8D8;     /* 深宣纸 */
    --xuanzhi-light: #FDFBF7;    /* 浅宣纸 */

    /* === 传统辅色 === */
    --shiqing: #4A6741;          /* 石青 - 辅助 */
    --shiqing-light: #5A7D50;    /* 浅石青 */

    --zong: #8B4513;             /* 赭石 - 传统棕 */
    --zong-light: #A0522D;       /* 浅赭石 */

    /* === 兼容旧变量名 === */
    --paper-white: var(--xuanzhi);
    --ink-black: var(--mo);
    --light-blue: var(--zhusha);
    --tech-blue: var(--zhusha-dark);
    --ochre: var(--zong);
    --deep-green: var(--shiqing);
    --purple-gray: #6B5B95;

    /* === 文字色 === */
    --text-primary: var(--mo);
    --text-secondary: var(--mo-light);
    --text-muted: var(--mo-muted);
    --text-link: var(--zhusha);
    --text-link-hover: var(--zhusha-dark);
    --text-gold: var(--jin);

    /* === 背景色 === */
    --bg-card: rgba(255, 255, 255, 0.7);
    --bg-hover: rgba(194, 58, 48, 0.05);
    --bg-dark: var(--mo);

    /* === 边框色 === */
    --border-light: rgba(194, 58, 48, 0.15);
    --border-hover: rgba(194, 58, 48, 0.4);
    --border-gold: rgba(212, 168, 67, 0.3);

    /* === 字体 === */
    --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'SimSun', serif;
    --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'Microsoft YaHei', sans-serif;

    /* === 尺寸 === */
    --header-height: 70px;
    --container-width: 1200px;
    --section-gap: 80px;
    --card-radius: 8px;

    /* === 动画 === */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    background: var(--xuanzhi);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

a:hover {
    color: var(--text-link-hover);
}

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

/* 宣纸纹理背景 */
.paper-texture {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    opacity: 0.4;
    background-image: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(139, 69, 19, 0.02) 2px,
            rgba(139, 69, 19, 0.02) 4px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 2px,
            rgba(139, 69, 19, 0.015) 2px,
            rgba(139, 69, 19, 0.015) 4px
        );
}

/* ============================================
   顶部导航栏
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(245, 242, 233, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.site-header.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
}

/* 移动端菜单打开时，头部保持最上层 */
.site-header.menu-open {
    z-index: 100001 !important;
}

.header-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--mo);
}

.logo:hover {
    color: var(--mo);
}

.logo-seal {
    width: 42px;
    height: 42px;
    border: 2px solid var(--ochre);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: rgba(139, 69, 19, 0.05);
}

.logo-seal::before {
    content: '';
    position: absolute;
    inset: 2px;
    border: 1px solid var(--ochre);
    border-radius: 2px;
    opacity: 0.5;
}

.seal-text {
    font-family: var(--font-serif);
    font-size: 13px;
    font-weight: 600;
    color: var(--ochre);
    letter-spacing: 1px;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 2px;
    line-height: 1.3;
}

.logo-sub {
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 1px;
    margin-top: 2px;
}

/* 导航菜单 */
.main-nav {
    flex: 1;
    margin: 0 40px;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 4px;
    justify-content: center;
}

.nav-item {
    position: relative;
}

.nav-item > a {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 14px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    border-radius: 6px;
    transition: all var(--transition-fast);
}

.nav-item > a:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.nav-item.active > a {
    color: var(--zhusha);
    background: rgba(194, 58, 48, 0.08);
}

.nav-icon {
    font-size: 16px;
    line-height: 1;
}

/* 下拉菜单 */
.has-dropdown .dropdown-toggle {
    cursor: pointer;
}

.dropdown-arrow {
    font-size: 10px;
    transition: transform var(--transition-fast);
}

.has-dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-radius: var(--card-radius);
    padding: 8px 0;
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    list-style: none;
}

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

.dropdown-menu li a {
    display: block;
    padding: 10px 20px;
    color: var(--text-secondary);
    font-size: 14px;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.dropdown-menu li a:hover {
    color: var(--zhusha);
    background: var(--bg-hover);
}

/* 工具区 */
.header-tools {
    display: flex;
    align-items: center;
    gap: 8px;
}

.tool-btn {
    width: 38px;
    height: 38px;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.tool-btn:hover {
    background: var(--bg-hover);
    color: var(--zhusha);
}

/* 搜索面板 */
.search-panel {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(245, 242, 233, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    padding: 20px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
}

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

.search-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.search-form {
    flex: 1;
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid var(--border-light);
    border-radius: 30px;
    padding: 4px 4px 4px 20px;
    transition: border-color var(--transition-fast);
}

.search-form:focus-within {
    border-color: var(--zhusha);
}

.search-input {
    flex: 1;
    border: none;
    background: none;
    font-size: 15px;
    color: var(--text-primary);
    outline: none;
    padding: 8px 0;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-submit {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--zhusha);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast);
}

.search-submit:hover {
    background: var(--zhusha-dark);
}

.search-close {
    width: 36px;
    height: 36px;
    border: none;
    background: none;
    font-size: 24px;
    color: var(--text-muted);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.search-close:hover {
    color: var(--text-primary);
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 32px;
    height: 32px;
    border: none;
    background: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-toggle .bar {
    width: 100%;
    height: 2px;
    background: var(--mo-muted);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* 星轨装饰线 */
.orbit-line {
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--light-blue) 20%,
        var(--light-blue) 80%,
        transparent 100%
    );
    opacity: 0.5;
}

/* 移动端遮罩 */
.mobile-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99999 !important;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* 返回顶部 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border-light);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: 998;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    color: var(--zhusha);
    border-color: var(--zhusha);
    transform: translateY(-2px);
}

/* ============================================
   公共布局
   ============================================ */
.site-main {
    padding-top: var(--header-height);
    min-height: calc(100vh - var(--header-height));
}

.section {
    padding: var(--section-gap) 0;
}

.section-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    color: var(--zhusha);
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 600;
    color: var(--mo);
    margin-bottom: 10px;
    letter-spacing: 2px;
}

.section-subtitle {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.title-decoration {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.deco-line {
    width: 40px;
    height: 1px;
    background: var(--zhusha);
    opacity: 0.5;
}

.deco-dot {
    color: var(--zhusha);
    font-size: 10px;
    opacity: 0.7;
}

.section-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    font-size: 14px;
    color: var(--zhusha);
    font-weight: 500;
}

.section-more:hover {
    gap: 10px;
}

/* 面包屑 */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

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

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

.breadcrumb .sep {
    color: var(--text-muted);
    opacity: 0.5;
}

.breadcrumb .current {
    color: var(--text-secondary);
}

/* ============================================
   首页 - 轮播图
   ============================================ */
.hero-banner {
    position: relative;
    height: 600px;
    overflow: hidden;
    background: var(--ink-black);
}

.banner-slider {
    position: relative;
    height: 100%;
}

.banner-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.banner-slide.active {
    opacity: 1;
}

.banner-image {
    position: absolute;
    inset: 0;
}

.banner-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-overlay {
    display: none;
}

.banner-content {
    position: absolute;
    bottom: 120px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: white;
    max-width: 700px;
    padding: 0 24px;
    z-index: 2;
}

.banner-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(135, 206, 235, 0.2);
    border: 1px solid rgba(135, 206, 235, 0.4);
    border-radius: 20px;
    font-size: 13px;
    letter-spacing: 2px;
    margin-bottom: 20px;
    backdrop-filter: blur(4px);
}

.banner-title {
    font-family: var(--font-serif);
    font-size: 42px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 24px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.banner-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: rgba(135, 206, 235, 0.2);
    border: 1px solid rgba(135, 206, 235, 0.5);
    border-radius: 30px;
    color: white;
    font-size: 14px;
    transition: all var(--transition-normal);
    backdrop-filter: blur(4px);
}

.banner-btn:hover {
    background: rgba(135, 206, 235, 0.4);
    border-color: var(--light-blue);
    color: white;
    transform: translateY(-2px);
}

/* 轮播指示器 */
.banner-indicators {
    position: absolute;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 3;
}

.indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.5);
    background: transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.indicator.active {
    background: var(--light-blue);
    border-color: var(--light-blue);
}

.indicator:hover {
    border-color: var(--light-blue);
}

/* 轮播控制 */
.banner-control {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    background: rgba(0, 0, 0, 0.2);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all var(--transition-fast);
    z-index: 3;
    backdrop-filter: blur(4px);
}

.banner-control:hover {
    background: rgba(135, 206, 235, 0.3);
    border-color: var(--light-blue);
}

.banner-control.prev { left: 30px; }
.banner-control.next { right: 30px; }

/* 滚动提示 */
.scroll-hint {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    z-index: 3;
    animation: bounce 2s infinite;
}

.scroll-text {
    font-size: 12px;
    letter-spacing: 2px;
    margin-bottom: 4px;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-8px); }
    60% { transform: translateX(-50%) translateY(-4px); }
}

/* ============================================
   首页 - 统计条
   ============================================ */
.stats-bar {
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.05) 0%, rgba(30, 144, 255, 0.05) 100%);
    border-bottom: 1px solid var(--border-light);
    padding: 30px 0;
}

.stats-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
}

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

.stat-number {
    display: block;
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 600;
    color: var(--ochre);
    line-height: 1.2;
}

.stat-label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.stat-separator {
    width: 1px;
    height: 30px;
    background: var(--border-light);
}

/* ============================================
   首页 - 分类卡片
   ============================================ */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.category-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--card-radius);
    padding: 36px 24px;
    text-align: center;
    transition: all var(--transition-normal);
    overflow: hidden;
    display: block;
    color: var(--text-primary);
}

.category-card:hover {
    color: var(--text-primary);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}

.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    border-radius: 50%;
    opacity: 0;
    transition: opacity var(--transition-slow);
    filter: blur(60px);
}

.category-card:hover .card-glow {
    opacity: 0.08;
}

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

.card-icon {
    font-size: 36px;
    margin-bottom: 16px;
    display: block;
}

.card-title {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
}

.card-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
}

.card-arrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

.category-card:hover .card-arrow {
    color: var(--tech-blue);
    gap: 10px;
}

.card-border {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    border-bottom-left-radius: var(--card-radius);
    border-bottom-right-radius: var(--card-radius);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.category-card:hover .card-border {
    opacity: 1;
}



/* ============================================
   搜索页面样式 - 完整版
   调整: 文章间距 20px→12px, 区域间距 40px→20px
   ============================================ */

/* 搜索英雄区 */
.search-hero {
    background: linear-gradient(135deg, var(--ink-dark) 0%, #3d2817 100%);
    padding: 60px 24px 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.search-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 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='%23ffffff' 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");
    opacity: 0.5;
}

.search-hero-content {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.search-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--paper);
    margin-bottom: 12px;
    font-family: var(--font-serif);
}

.search-stats {
    font-size: 14px;
    color: var(--paper-light);
    opacity: 0.8;
    margin-bottom: 30px;
}

/* 搜索表单 */
.search-form-large {
    display: flex;
    gap: 0;
    max-width: 560px;
    margin: 0 auto;
    background: var(--paper);
    border-radius: 50px;
    padding: 5px;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
}

.search-input-large {
    flex: 1;
    border: none;
    background: transparent;
    padding: 12px 20px;
    font-size: 15px;
    color: var(--ink-dark);
    outline: none;
    font-family: var(--font-sans);
}

.search-input-large::placeholder {
    color: var(--ink-light);
    opacity: 0.6;
}

.search-submit-large {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 24px;
    background: var(--vermilion);
    color: var(--paper);
    border: none;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-sans);
    white-space: nowrap;
}

.search-submit-large:hover {
    background: #c45c3e;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(180, 82, 56, 0.4);
}

/* 搜索结果区 - 调整间距为20px */
.results-section {
    padding: 20px 24px;
}

.results-section .section-container {
    max-width: 800px;
    margin: 0 auto;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 24px;
}

.empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 18px;
    color: var(--ink-dark);
    margin-bottom: 8px;
    font-family: var(--font-serif);
}

.empty-state p {
    font-size: 13px;
    color: var(--ink-light);
    opacity: 0.7;
}

/* 文章列表 - 调整间距为12px */
.results-section .articles-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.results-section .list-article {
    background: var(--paper);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.25s ease;
    border: 1px solid var(--border-light);
}

.results-section .list-article:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    border-color: var(--border-dark);
}

.results-section .article-link {
    display: flex;
    gap: 16px;
    padding: 16px;
    text-decoration: none;
    color: inherit;
}

.results-section .article-cover {
    width: 160px;
    height: 100%;
    border-radius: 6px;
    overflow: hidden;
    flex-shrink: 0;
    background: var(--border-light);
}

.results-section .article-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.results-section .list-article:hover .article-cover img {
    transform: scale(1.05);
}

.results-section .cover-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--border-light), var(--border-dark));
    color: var(--ink-light);
    font-size: 40px;
    font-weight: 700;
    font-family: var(--font-serif);
}

.results-section .article-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
}

.results-section .article-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 6px;
    font-size: 12px;
    color: var(--ink-light);
    opacity: 0.7;
}

.results-section .article-meta svg {
    width: 12px;
    height: 12px;
    vertical-align: middle;
    margin-right: 3px;
}

.results-section .meta-category {
    background: var(--vermilion);
    color: var(--paper);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 500;
}

.results-section .article-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink-dark);
    margin-bottom: 6px;
    font-family: var(--font-serif);
    line-height: 1.4;
}

.results-section .article-summary {
    font-size: 13px;
    color: var(--ink-light);
    line-height: 1.5;
    opacity: 0.8;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 分页 - 调整间距为20px */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-light);
}

.page-btn {
    padding: 8px 20px;
    background: var(--paper);
    border: 1px solid var(--border-dark);
    border-radius: 6px;
    color: var(--ink-dark);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.page-btn:hover {
    background: var(--vermilion);
    color: var(--paper);
    border-color: var(--vermilion);
}

.page-info {
    font-size: 13px;
    color: var(--ink-light);
}

/* ============================================
   响应式适配
   ============================================ */
@media (max-width: 768px) {
    .search-hero {
        padding: 40px 16px 30px;
    }

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

    .search-form-large {
        flex-direction: column;
        border-radius: 12px;
        gap: 6px;
    }

    .search-input-large {
        padding: 10px 16px;
    }

    .search-submit-large {
        justify-content: center;
        border-radius: 10px;
    }

    .results-section .article-link {
        flex-direction: column;
        gap: 12px;
        padding: 12px;
    }

    .results-section .article-cover {
        width: 100%;
        height: 100%;
    }

    .results-section {
        padding: 16px;
    }
}
/* ============================================
   文章卡片通用样式
   ============================================ */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.article-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--card-radius);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
    border-color: var(--border-hover);
}

.card-link {
    display: block;
    color: inherit;
}

.card-link:hover {
    color: inherit;
}

.card-cover {
    position: relative;
    aspect-ratio: 3/2;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.1) 0%, rgba(30, 144, 255, 0.1) 100%);
}

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

.article-card:hover .card-cover img {
    transform: scale(1.05);
}

.cover-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.15) 0%, rgba(30, 144, 255, 0.15) 100%);
    font-family: var(--font-serif);
    font-size: 48px;
    color: var(--ochre);
    opacity: 0.6;
}

.card-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
    backdrop-filter: blur(4px);
}

.card-badge.ai-badge {
    background: rgba(30, 144, 255, 0.85);
    color: white;
}

.card-body {
    padding: 20px;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    margin-bottom: 10px;
}

.meta-category {
    font-weight: 500;
}

.meta-dot {
    color: var(--text-muted);
}

.meta-date {
    color: var(--text-muted);
}

.card-title {
    font-family: var(--font-serif);
    font-size: 17px;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-summary {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 14px;
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
}

.meta-views {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.meta-author {
    color: var(--text-secondary);
}

/* ============================================
   置顶文章
   ============================================ */
.top-articles {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.top-article {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--card-radius);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.top-article:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}

.top-article .article-link {
    display: block;
    color: inherit;
}

.top-article .article-cover {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
}

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

.top-article:hover .article-cover img {
    transform: scale(1.05);
}

.article-badge {
    position: absolute;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
    backdrop-filter: blur(4px);
}

.top-badge {
    top: 12px;
    left: 12px;
    background: rgba(139, 69, 19, 0.85);
    color: white;
}

.ai-badge {
    top: 12px;
    right: 12px;
    background: rgba(30, 144, 255, 0.85);
    color: white;
}

.top-article .article-info {
    padding: 20px;
}

.top-article .article-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    margin-bottom: 10px;
}

.top-article .article-title {
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 10px;
}

.top-article .article-summary {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 14px;
}

.top-article .article-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
}

.top-article .read-more {
    color: var(--tech-blue);
    font-weight: 500;
}

/* ============================================
   热门文章列表
   ============================================ */
.hot-articles-list {
    max-width: 800px;
    margin: 0 auto;
}

.hot-article-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-light);
}

.hot-rank {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-family: var(--font-serif);
    font-size: 14px;
    font-weight: 600;
    flex-shrink: 0;
}

.hot-article-item:nth-child(1) .hot-rank {
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: white;
}

.hot-article-item:nth-child(2) .hot-rank {
    background: linear-gradient(135deg, #C0C0C0, #A0A0A0);
    color: white;
}

.hot-article-item:nth-child(3) .hot-rank {
    background: linear-gradient(135deg, #CD7F32, #B87333);
    color: white;
}

.hot-article-item:nth-child(n+4) .hot-rank {
    background: var(--bg-hover);
    color: var(--text-muted);
}

.hot-link {
    display: flex;
    align-items: center;
    gap: 16px;
    flex: 1;
    color: inherit;
}

.hot-link:hover {
    color: inherit;
}

.hot-cover {
    width: 80px;
    height: 60px;
    border-radius: 6px;
    overflow: hidden;
    flex-shrink: 0;
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.1) 0%, rgba(30, 144, 255, 0.1) 100%);
}

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

.hot-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 20px;
    color: var(--ochre);
    opacity: 0.5;
}

.hot-info {
    flex: 1;
}

.hot-title {
    font-family: var(--font-serif);
    font-size: 16px;
    font-weight: 500;
    line-height: 1.5;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.hot-views {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.hot-category {
    padding: 2px 8px;
    background: var(--bg-hover);
    border-radius: 4px;
}

/* ============================================
   产品区域
   ============================================ */
.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--card-radius);
    overflow: hidden;
    transition: all var(--transition-normal);
    display: flex;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}

.product-cover {
    width: 200px;
    flex-shrink: 0;
    aspect-ratio: 1;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.1) 0%, rgba(30, 144, 255, 0.1) 100%);
}

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

.product-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 48px;
    color: var(--ochre);
    opacity: 0.5;
}

.product-info {
    flex: 1;
    padding: 24px;
    display: flex;
    flex-direction: column;
}

.product-title {
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.product-price {
    font-size: 20px;
    font-weight: 600;
    color: var(--ochre);
    margin-bottom: 10px;
}

.product-summary {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    padding: 10px 20px;
    background: var(--light-blue);
    color: white;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-fast);
    align-self: flex-start;
}

.product-btn:hover {
    background: var(--tech-blue);
    color: white;
    transform: translateX(4px);
}

/* ============================================
   CTA区域
   ============================================ */
.cta-section {
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.06) 0%, rgba(30, 144, 255, 0.06) 100%);
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
    padding: 80px 0;
}

.cta-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.cta-content {
    max-width: 500px;
}

.cta-title {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 16px;
    line-height: 1.4;
}

.cta-desc {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.cta-actions {
    display: flex;
    gap: 16px;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.cta-btn.primary {
    background: var(--light-blue);
    color: white;
    border: none;
}

.cta-btn.primary:hover {
    background: var(--tech-blue);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(30, 144, 255, 0.3);
}

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

.cta-btn.secondary:hover {
    border-color: var(--light-blue);
    color: var(--tech-blue);
}

.cta-decoration {
    position: relative;
    width: 300px;
    height: 200px;
}

.orbit-circle {
    position: absolute;
    border-radius: 50%;
    border: 1px solid var(--border-light);
}

.cta-decoration .orbit-circle:nth-child(1) {
    width: 200px;
    height: 200px;
    top: 0;
    left: 50px;
    animation: orbit-rotate 20s linear infinite;
}

.cta-decoration .orbit-circle:nth-child(2) {
    width: 140px;
    height: 140px;
    top: 30px;
    left: 80px;
    animation: orbit-rotate 15s linear infinite reverse;
}

.cta-decoration .orbit-circle:nth-child(3) {
    width: 80px;
    height: 80px;
    top: 60px;
    left: 110px;
    animation: orbit-rotate 10s linear infinite;
}

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

/* ============================================
   页脚
   ============================================ */
.site-footer {
    background: linear-gradient(180deg, rgba(245, 242, 233, 0.95) 0%, rgba(230, 225, 215, 0.9) 100%);
    border-top: 1px solid var(--border-light);
    padding: 60px 0 30px;
}

.footer-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1.5fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .footer-seal {
    width: 48px;
    height: 48px;
    border: 2px solid var(--ochre);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    background: rgba(139, 69, 19, 0.05);
}

.footer-brand .footer-seal .seal-text {
    font-family: var(--font-serif);
    font-size: 14px;
    font-weight: 600;
    color: var(--ochre);
}

.footer-title {
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

.footer-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.footer-section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--ink-black);
    margin-bottom: 16px;
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 13px;
    color: var(--text-secondary);
}

.contact-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    background: var(--bg-hover);
    font-size: 12px;
    color: var(--light-blue);
    flex-shrink: 0;
}

.footer-nav-list {
    list-style: none;
}

.footer-nav-list li {
    padding: 6px 0;
}

.footer-nav-list a {
    font-size: 13px;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.footer-nav-list a:hover {
    color: var(--tech-blue);
}

.qr-code {
    width: 120px;
    height: 120px;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-light);
    background: white;
}

.qr-code img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.qr-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: var(--text-muted);
}

.footer-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 30px;
}

.divider-icon {
    color: var(--light-blue);
    opacity: 0.5;
    font-size: 14px;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-copyright p {
    font-size: 12px;
    color: var(--text-muted);
}

.footer-seo-keywords {
    margin-top: 4px;
    font-size: 11px;
    opacity: 0.7;
}

.footer-stats {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--text-muted);
}

.stat-separator {
    opacity: 0.3;
}

.footer-orbit {
    top: 0;
    bottom: auto;
}


/* ============================================
   分类页
   ============================================ */
.category-hero {
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.06) 0%, rgba(30, 144, 255, 0.06) 100%);
    border-bottom: 1px solid var(--border-light);
    padding: 60px 0 40px;
    position: relative;
    overflow: hidden;
}

.category-hero-content {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

.category-title {
    font-family: var(--font-serif);
    font-size: 36px;
    font-weight: 600;
    margin-bottom: 12px;
}

.category-desc {
    font-size: 15px;
    color: var(--text-secondary);
    max-width: 900px;
    margin-bottom: 16px;
}

.category-stats {
    font-size: 13px;
    color: var(--text-muted);
}

.category-stats .sep {
    margin: 0 10px;
    opacity: 0.5;
}

.category-hero-decoration {
    position: absolute;
    right: 10%;
    top: 50%;
    transform: translateY(-50%);
}

.orbit-ring {
    width: 200px;
    height: 200px;
    border: 1px solid var(--border-light);
    border-radius: 50%;
    animation: orbit-rotate 30s linear infinite;
}

/* 筛选栏 */
.filter-bar {
    background: rgba(255, 255, 255, 0.6);
    border-bottom: 1px solid var(--border-light);
    padding: 16px 0;
    position: sticky;
    top: var(--header-height);
    z-index: 100;
    backdrop-filter: blur(8px);
}

.filter-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.filter-tabs {
    display: flex;
    gap: 8px;
}

.filter-tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.filter-tab:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.filter-tab.active {
    background: rgba(30, 144, 255, 0.1);
    color: var(--tech-blue);
    border-color: rgba(30, 144, 255, 0.2);
}

.filter-info {
    font-size: 13px;
    color: var(--text-muted);
}

/* 文章列表（列表视图） */
.articles-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.list-article {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--card-radius);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.list-article:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    border-color: var(--border-hover);
}

.list-article .article-link {
    display: flex;
    color: inherit;
}

.list-article .article-link:hover {
    color: inherit;
}

.list-article .article-cover {
    width: 280px;
    flex-shrink: 0;
    aspect-ratio: 3/2;
    overflow: hidden;
    position: relative;
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.1) 0%, rgba(30, 144, 255, 0.1) 100%);
}

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

.list-article:hover .article-cover img {
    transform: scale(1.05);
}

.list-article .article-body {
    flex: 1;
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

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

.list-article .article-title {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 12px;
}

.list-article .article-summary {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.list-article .article-footer {
    display: flex;
    align-items: center;
}

.list-article .read-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--tech-blue);
    font-weight: 500;
    transition: gap var(--transition-fast);
}

.list-article:hover .read-more {
    gap: 10px;
}

/* 分页 */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border-light);
}

.page-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border: 1px solid var(--border-light);
    border-radius: 6px;
    font-size: 13px;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.page-btn:hover {
    border-color: var(--light-blue);
    color: var(--tech-blue);
}

.page-numbers {
    display: flex;
    gap: 6px;
}

.page-num {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-light);
    border-radius: 6px;
    font-size: 14px;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.page-num:hover {
    border-color: var(--light-blue);
    color: var(--tech-blue);
}

.page-num.active {
    background: var(--light-blue);
    border-color: var(--light-blue);
    color: white;
}

.page-ellipsis {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    color: var(--text-muted);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 80px 24px;
}

.empty-icon {
    font-size: 64px;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-state h3 {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
}

.empty-state p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ============================================
   文章详情页
   ============================================ */
.article-hero {
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.04) 0%, rgba(30, 144, 255, 0.04) 100%);
    border-bottom: 1px solid var(--border-light);
    padding: 50px 0 30px;
}

.article-hero-content {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.article-main-title {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 20px;
    max-width: 800px;
}

.article-meta-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.meta-left {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 13px;
    color: var(--text-muted);
}

.meta-left span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.meta-right {
    display: flex;
    gap: 8px 0px;
}

.meta-badge {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
}

.meta-badge.top {
    background: rgba(139, 69, 19, 0.1);
    color: var(--ochre);
    border: 1px solid rgba(139, 69, 19, 0.2);
}

.meta-badge.ai {
    background: rgba(30, 144, 255, 0.1);
    color: var(--tech-blue);
    border: 1px solid rgba(30, 144, 255, 0.2);
}

/* 文章封面大图 */
.article-cover-full {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 30px 24px 0;
}

.article-cover-full img {
    width: 100%;
    max-height: 1000px;
    object-fit: cover;
    border-radius: var(--card-radius);
}

/* 文章容器 */
.article-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 40px 24px;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
}

.article-content {
    min-width: 0;
}

/* 摘要框 */
.article-summary-box {
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.04) 0%, rgba(30, 144, 255, 0.04) 100%);
    border-left: 3px solid var(--light-blue);
    padding: 20px 24px;
    margin-bottom: 30px;
    border-radius: 0 var(--card-radius) var(--card-radius) 0;
}

.summary-label {
    font-size: 12px;
    font-weight: 450;
    color: var(--tech-blue);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.summary-text {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    font-style: italic;
}

/* 文章正文 */
.article-body {
    font-size: 16px;
    line-height: 1.9;
    color: var(--text-primary);
}

.article-body p {
    margin-bottom: 20px;
}

.article-body h2,
.article-body h3,
.article-body h4 {
    font-family: var(--font-serif);
    font-weight: 600;
    margin: 40px 0 20px;
    line-height: 1.4;
}

.article-body h2 {
    font-size: 24px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-light);
}

.article-body h3 {
    font-size: 20px;
}

.article-body h4 {
    font-size: 18px;
}

.article-body img {
    max-width: 100%;
    border-radius: var(--card-radius);
    margin: 20px 0;
}

.article-body blockquote {
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.04) 0%, rgba(30, 144, 255, 0.04) 100%);
    border-left: 3px solid var(--ochre);
    padding: 20px 24px;
    margin: 24px 0;
    border-radius: 0 var(--card-radius) var(--card-radius) 0;
    font-style: italic;
    color: var(--text-secondary);
}

.article-body ul,
.article-body ol {
    margin: 20px 0;
    padding-left: 28px;
}

.article-body li {
    margin-bottom: 8px;
}

.article-body code {
    background: rgba(30, 144, 255, 0.08);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 14px;
    color: var(--tech-blue);
}

.article-body pre {
    background: #f8f8f8;
    padding: 20px;
    border-radius: var(--card-radius);
    overflow-x: auto;
    margin: 20px 0;
}

.article-body pre code {
    background: none;
    padding: 0;
}

/* 文章底部信息 */
.article-footer-info {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid var(--border-light);
}

.footer-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.article-tag {
    padding: 6px 14px;
    background: var(--bg-hover);
    border-radius: 20px;
    font-size: 12px;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.article-tag:hover {
    background: rgba(30, 144, 255, 0.1);
    color: var(--tech-blue);
}

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

.share-label {
    font-size: 13px;
    color: var(--text-muted);
}

.share-btn {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-light);
    background: white;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

.share-btn:hover {
    transform: translateY(-2px);
}

.share-btn.wechat:hover {
    background: #07C160;
    border-color: #07C160;
    color: white;
}

.share-btn.weibo:hover {
    background: #E6162D;
    border-color: #E6162D;
    color: white;
}

.share-btn.copy:hover {
    background: var(--light-blue);
    border-color: var(--light-blue);
    color: white;
}

/* 上下篇导航 */
.article-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border-light);
}

.nav-prev,
.nav-next {
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--card-radius);
    transition: all var(--transition-fast);
    color: inherit;
}

.nav-prev:hover,
.nav-next:hover {
    border-color: var(--light-blue);
    color: inherit;
}

.nav-prev {
    text-align: left;
}

.nav-next {
    text-align: right;
}

.nav-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.nav-next .nav-label {
    justify-content: flex-end;
}

.nav-title {
    font-family: var(--font-serif);
    font-size: 15px;
    font-weight: 500;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.nav-placeholder {
    display: none;
}

/* 侧边栏 */
.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.sidebar-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--card-radius);
    padding: 24px;
}

.sidebar-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-serif);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-light);
}

.sidebar-title svg {
    color: var(--light-blue);
}

/* 作者卡片 */
.author-card {
    text-align: center;
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--ochre), var(--light-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    font-family: var(--font-serif);
    font-size: 24px;
    color: white;
    font-weight: 600;
}

.author-name {
    font-family: var(--font-serif);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.author-desc {
    font-size: 12px;
    color: var(--text-muted);
}

/* 相关文章 */
.related-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.related-item {
    display: flex;
    gap: 12px;
    color: inherit;
}

.related-item:hover {
    color: inherit;
}

.related-item img,
.related-placeholder {
    width: 60px;
    height: 45px;
    border-radius: 6px;
    object-fit: cover;
    flex-shrink: 0;
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.1) 0%, rgba(30, 144, 255, 0.1) 100%);
}

.related-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 18px;
    color: var(--ochre);
    opacity: 0.5;
}

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

.related-title {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.5;
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-views {
    font-size: 12px;
    color: var(--text-muted);
}

/* 分类导航 */
.category-nav-list {
    list-style: none;
}

.category-nav-list li {
    padding: 0;
    border-bottom: 1px solid var(--border-light);
}

.category-nav-list li:last-child {
    border-bottom: none;
}

.category-nav-list li a {
    display: block;
    padding: 12px 0;
    font-size: 14px;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.category-nav-list li a:hover {
    color: var(--tech-blue);
    padding-left: 8px;
}

.category-nav-list li.active a {
    color: var(--tech-blue);
    font-weight: 500;
}


/* ============================================
   单页通用样式
   ============================================ */
.page-hero {
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.04) 0%, rgba(30, 144, 255, 0.04) 100%);
    border-bottom: 1px solid var(--border-light);
    padding: 60px 0 40px;
}

.page-hero-content {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    text-align: center;
}

.page-title {
    font-family: var(--font-serif);
    font-size: 36px;
    font-weight: 600;
    margin-bottom: 16px;
}

.page-desc {
    font-size: 15px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.page-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 40px 24px;
}

.page-content-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.page-content {
    font-size: 16px;
    line-height: 1.9;
}

.page-content p {
    margin-bottom: 20px;
}

.page-content h2,
.page-content h3 {
    font-family: var(--font-serif);
    font-weight: 600;
    margin: 40px 0 20px;
}

.page-content h2 {
    font-size: 24px;
}

.page-content h3 {
    font-size: 20px;
}

/* ============================================
   联系我们页面
   ============================================ */
.contact-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--card-radius);
    padding: 30px 24px;
    text-align: center;
    transition: all var(--transition-normal);
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
    border-color: var(--light-blue);
}

.contact-card .contact-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.1) 0%, rgba(30, 144, 255, 0.1) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 20px;
    color: var(--ochre);
}

.contact-card h4 {
    font-family: var(--font-serif);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

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

/* 地图示意 */
.map-section {
    margin-top: 50px;
    text-align: center;
}

.map-title {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
}

.map-placeholder {
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.04) 0%, rgba(30, 144, 255, 0.04) 100%);
    border: 1px solid var(--border-light);
    border-radius: var(--card-radius);
    padding: 60px 24px;
    text-align: center;
}

.map-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.map-placeholder p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.map-note {
    font-size: 12px;
    color: var(--text-muted);
}

/* ============================================
   在线留言表单
   ============================================ */
.message-form-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--card-radius);
    padding: 40px;
    margin-top: 40px;
}

.form-title {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 8px;
    text-align: center;
}

.form-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 30px;
}

.form-success {
    text-align: center;
    padding: 40px 20px;
}

.success-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #4CAF50, #45a049);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin: 0 auto 20px;
}

.form-success h4 {
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.form-success p {
    font-size: 14px;
    color: var(--text-secondary);
}

.form-error {
    background: rgba(255, 82, 82, 0.1);
    border: 1px solid rgba(255, 82, 82, 0.3);
    border-radius: 6px;
    padding: 12px 16px;
    color: #d32f2f;
    font-size: 14px;
    margin-bottom: 20px;
}

.message-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

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

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

.form-group .required {
    color: #d32f2f;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    background: rgba(255, 255, 255, 0.8);
    color: var(--text-primary);
    transition: border-color var(--transition-fast);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--light-blue);
    box-shadow: 0 0 0 3px rgba(135, 206, 235, 0.1);
}

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

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

.submit-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: var(--light-blue);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 100%;
    justify-content: center;
}

.submit-btn:hover {
    background: var(--tech-blue);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(30, 144, 255, 0.3);
}

/* ============================================
   产品详情页
   ============================================ */
.product-hero {
    text-align: center;
}

.product-hero .breadcrumb {
    justify-content: center;
}

.products-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.product-detail-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--card-radius);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.product-detail-card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}

.product-header {
    display: flex;
    border-bottom: 1px solid var(--border-light);
}

.product-cover-large {
    width: 300px;
    flex-shrink: 0;
    aspect-ratio: 1;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.1) 0%, rgba(30, 144, 255, 0.1) 100%);
}

.product-cover-large img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-placeholder-large {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 64px;
    color: var(--ochre);
    opacity: 0.5;
}

.product-header-info {
    flex: 1;
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.product-name {
    font-family: var(--font-serif);
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
}

.product-price-tag {
    font-size: 28px;
    font-weight: 600;
    color: var(--ochre);
    margin-bottom: 20px;
}

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

.param-item {
    padding: 8px 14px;
    background: var(--bg-hover);
    border-radius: 6px;
    font-size: 13px;
}

.param-key {
    color: var(--text-muted);
}

.param-val {
    color: var(--text-primary);
    font-weight: 500;
}

.product-body {
    padding: 30px;
}

.product-description {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.product-footer {
    padding: 20px 30px 30px;
}

.product-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: var(--light-blue);
    color: white;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.product-cta-btn:hover {
    background: var(--tech-blue);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(30, 144, 255, 0.3);
}

/* ============================================
   404页面
   ============================================ */
.page-404 {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--paper-white);
}

.error-container {
    text-align: center;
    padding: 40px;
}

.error-seal {
    width: 120px;
    height: 120px;
    border: 3px solid var(--ochre);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
    font-family: var(--font-serif);
    font-size: 36px;
    font-weight: 600;
    color: var(--ochre);
    position: relative;
    background: rgba(139, 69, 19, 0.05);
}

.error-seal::before {
    content: '';
    position: absolute;
    inset: 4px;
    border: 1px solid var(--ochre);
    border-radius: 4px;
    opacity: 0.4;
}

.error-title {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 12px;
}

.error-desc {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.error-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.error-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.error-btn.primary {
    background: var(--light-blue);
    color: white;
}

.error-btn.primary:hover {
    background: var(--tech-blue);
    color: white;
    transform: translateY(-2px);
}

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

.error-btn.secondary:hover {
    border-color: var(--light-blue);
    color: var(--tech-blue);
}

.error-decoration {
    position: absolute;
    right: 10%;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.1;
}

/* ============================================
   响应式适配
   ============================================ */
@media (max-width: 1024px) {
    :root {
        --container-width: 100%;
    }

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

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

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

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

    .product-card {
        flex-direction: column;
    }

    .product-cover {
        width: 100%;
        aspect-ratio: 4/3;
    }

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

    .article-sidebar {
        order: 2;
    }

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

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

    .product-header {
        flex-direction: column;
    }

    .product-cover-large {
        width: 100%;
        aspect-ratio: 4/3;
    }

    .list-article .article-link {
        flex-direction: column;
    }

    .list-article .article-cover {
        width: 100%;
    }

    .article-nav {
        grid-template-columns: 1fr;
    }

    .nav-next {
        text-align: left;
    }

    .nav-next .nav-label {
        justify-content: flex-start;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 60px;
        --section-gap: 50px;
    }

    .header-container {
        padding: 0 16px;
    }

    .logo-sub {
        display: none;
    }

    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        height: calc(100vh - var(--header-height));
        background: rgba(245, 242, 233, 0.98);
        backdrop-filter: blur(10px);
        margin: 0;
        padding: 20px;
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
        z-index: 100000 !important;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .main-nav.active {
        transform: translateX(0);
    }

    .nav-list {
        flex-direction: column;
        gap: 4px;
    }

    .nav-item > a {
        padding: 14px 16px;
        font-size: 16px;
    }

    .dropdown-menu {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        background: transparent;
        border: none;
        padding-left: 20px;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero-banner {
        height: 280px;
    }

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

    .banner-control {
        display: none;
    }

    .stats-container {
        flex-wrap: wrap;
        gap: 20px;
    }

    .stat-separator {
        display: none;
    }

    .stat-item {
        flex: 1;
        min-width: 120px;
    }

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

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

    .top-articles {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 24px;
    }

    .cta-container {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }

    .cta-title {
        font-size: 24px;
    }

    .cta-decoration {
        width: 200px;
        height: 150px;
    }

    .footer-top {
        grid-template-columns: 1fr;
        gap: 30px;
    }

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

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

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

    .message-form-card {
        padding: 24px;
    }

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

    .article-main-title {
        font-size: 24px;
    }

    .filter-container {
        flex-direction: column;
        gap: 12px;
    }

    .filter-tabs {
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

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

    .product-name {
        font-size: 20px;
    }

    .product-price-tag {
        font-size: 22px;
    }

    .back-to-top {
        width: 40px;
        height: 40px;
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 480px) {
    .section-container,
    .header-container,
    .footer-container,
    .article-hero-content,
    .category-hero-content,
    .page-hero-content,
    .page-container {
        padding-left: 16px;
        padding-right: 16px;
    }

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

    .section-title {
        font-size: 20px;
    }

    .article-main-title {
        font-size: 20px;
    }

    .error-actions {
        flex-direction: column;
    }

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

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

.section {
    animation: fadeInUp 0.6s ease forwards;
}

/* 加载动画 */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 2px solid var(--border-light);
    border-top-color: var(--light-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 打印样式 */
@media print {
    .site-header,
    .site-footer,
    .article-sidebar,
    .back-to-top,
    .banner-control,
    .banner-indicators,
    .scroll-hint {
        display: none !important;
    }

    .site-main {
        padding-top: 0;
    }

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



/* ============================================
   页脚样式 v6.0 - 整齐的多栏布局
   ============================================ */

.site-footer {
    background: var(--ink-dark);
    color: var(--paper-light);
    padding: 50px 0 20px;
    margin-top: var(--section-gap);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 4栏网格布局 */
.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr 0.8fr;
    gap: 40px;
    padding-bottom: 30px;
}

/* 品牌区 */
.footer-brand .brand-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.footer-seal {
    width: 40px;
    height: 40px;
    border: 2px solid var(--vermilion);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.seal-text {
    color: var(--vermilion);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
}

.footer-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--paper);
    margin: 0;
}

.footer-desc {
    font-size: 13px;
    line-height: 1.7;
    color: var(--paper-light);
    opacity: 0.75;
    margin: 0;
}

/* 栏目标题 */
.footer-section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--paper);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(139, 69, 19, 0.3);
}

/* 联系方式 */
.contact-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    font-size: 13px;
}

.contact-icon {
    color: var(--vermilion);
    font-size: 14px;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

.contact-text {
    color: var(--paper-light);
    opacity: 0.85;
    word-break: break-all;
}

/* 快速导航 - 双列 */
.footer-nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 16px;
}

.footer-nav-list li a {
    display: block;
    font-size: 13px;
    color: var(--paper-light);
    opacity: 0.85;
    text-decoration: none;
    transition: all 0.2s ease;
    padding: 2px 0;
}

.footer-nav-list li a:hover {
    color: var(--gold);
    opacity: 1;
}

/* 微信二维码 */
.footer-qr-col {
    text-align: center;
}

.qr-wrapper {
    display: inline-block;
    margin-bottom: 8px;
}

.qr-wrapper img,
.qr-placeholder {
    width: 100px;
    height: 100px;
    border-radius: 6px;
    background: var(--paper);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: var(--ink-light);
}

.qr-tip {
    font-size: 11px;
    color: var(--paper-light);
    opacity: 0.6;
    margin: 0;
}

/* 底部版权 */
.footer-bottom {
    border-top: 1px solid rgba(139, 69, 19, 0.2);
    padding-top: 20px;
    text-align: center;
}

.copyright {
    font-size: 12px;
    color: var(--paper-light);
    opacity: 0.6;
    margin: 0;
}

.footer-nav-list {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 8px 20px !important;
}
/* ============================================
   响应式适配
   ============================================ */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 640px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }

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

    .footer-qr-col {
        grid-column: 1 / -1;
    }

    .site-footer {
        padding: 30px 0 16px;
    }
}

/* ============================================
   留言板样式 v5.0 - 双排瀑布流 + 隐私保护
   ============================================ */

.message-hero {
    background: linear-gradient(135deg, var(--ink-dark) 0%, #3d2817 100%);
    padding: 60px 24px 40px;
    text-align: center;
}

.message-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--paper);
    margin-bottom: 10px;
    font-family: var(--font-serif);
}

.message-subtitle {
    font-size: 14px;
    color: var(--paper-light);
    opacity: 0.8;
}

.message-section {
    padding: 40px 24px;
}

.message-section .section-container {
    max-width: 900px;
    margin: 0 auto;
}

/* 留言表单 */
.message-form-card {
    background: var(--paper);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 40px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    border: 1px solid var(--border-light);
}

.form-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink-dark);
    margin-bottom: 20px;
    font-family: var(--font-serif);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--ink-dark);
    margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-dark);
    border-radius: 8px;
    font-size: 14px;
    color: var(--ink-dark);
    background: var(--paper);
    font-family: var(--font-sans);
    box-sizing: border-box;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.char-count {
    text-align: right;
    font-size: 12px;
    color: var(--ink-light);
    margin-top: 4px;
}

/* 隐私选项 */
.form-privacy {
    margin-bottom: 16px;
}

.privacy-check {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--ink-light);
    cursor: pointer;
}

.privacy-check input {
    width: auto;
}

.submit-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 32px;
    background: var(--vermilion);
    color: var(--paper);
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
}

/* 留言墙 */
.message-wall {
    background: var(--paper);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    border: 1px solid var(--border-light);
}

.wall-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink-dark);
    margin-bottom: 24px;
    font-family: var(--font-serif);
    display: flex;
    align-items: center;
    gap: 8px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-light);
}

.wall-count {
    font-size: 13px;
    color: var(--ink-light);
    margin-left: auto;
}

/* ============================================
   核心: 双排瀑布流布局 (PC端)
   ============================================ */
.message-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* 单个留言卡片 */
.message-item {
    padding: 20px;
    background: var(--paper-light);
    border-radius: 10px;
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    break-inside: avoid;
}

.message-item:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    border-color: var(--border-dark);
    transform: translateY(-2px);
}

/* 头部 */
.message-header {
    margin-bottom: 12px;
}

.message-author {
    display: flex;
    align-items: center;
    gap: 10px;
}

.author-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--vermilion), var(--gold));
    color: var(--paper);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.author-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
    min-width: 0;
}

.author-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--ink-dark);
}

.message-time {
    font-size: 11px;
    color: var(--ink-light);
    opacity: 0.7;
}

/* 留言内容 */
.message-body {
    margin: 0;
}

.message-text {
    font-size: 14px;
    line-height: 1.7;
    color: var(--ink-dark);
    margin: 0;
    word-break: break-word;
}

/* 站长回复 */
.message-reply {
    margin-top: 12px;
    padding: 10px 14px;
    background: rgba(180, 82, 56, 0.05);
    border-radius: 8px;
    border-left: 3px solid var(--vermilion);
}

.reply-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--vermilion);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.reply-text {
    font-size: 13px;
    line-height: 1.6;
    color: var(--ink-dark);
    margin: 0;
}

/* 空状态 */
.empty-messages {
    text-align: center;
    padding: 60px 24px;
    grid-column: 1 / -1;
}

.empty-messages .empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.empty-messages p {
    font-size: 14px;
    color: var(--ink-light);
    opacity: 0.7;
}

/* ============================================
   响应式适配
   ============================================ */
@media (max-width: 768px) {
    .message-list {
        grid-template-columns: 1fr;
    }

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

    .message-form-card,
    .message-wall {
        padding: 20px;
    }

    .message-hero {
        padding: 40px 16px 30px;
    }

    .message-title {
        font-size: 24px;
    }
}