@charset "UTF-8";
/*
Theme Name: 德扑圈官网模板
Theme URI: https://www.depouquan.com/
Description: 德扑圈官网 + APP下载 + 产品介绍 + SEO内容中心 WordPress 主题。深色科技风、蓝紫渐变、玻璃拟态卡片布局，内置完整的 SEO/GEO 优化与 JSON-LD 结构化数据，附带一键导入演示数据。适合作为德扑圈APP官方网站、软件下载站、SEO内容中心使用。
Author: WorkBuddy
Author URI: https://www.codebuddy.cn/
Version: 1.0.0
Requires at least: 5.5
Tested up to: 6.5
Requires PHP: 7.2
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: dpq-theme
Tags: dark, technology, software, seo-ready, custom-menu, custom-logo, featured-images, threaded-comments, translation-ready, full-width-template, block-styles
*/

/* ==========================================================================
   1. CSS 变量 / 设计令牌
   ========================================================================== */
:root {
    /* 背景色 - 深色科技风 */
    --color-bg-primary: #0a0e1a;
    --color-bg-secondary: #0f1424;
    --color-bg-tertiary: #151b2e;
    --color-bg-elevated: #1a2138;

    /* 表面 / 玻璃拟态 */
    --color-surface: rgba(255, 255, 255, 0.05);
    --color-surface-hover: rgba(255, 255, 255, 0.08);
    --color-surface-active: rgba(255, 255, 255, 0.12);
    --color-border: rgba(255, 255, 255, 0.1);
    --color-border-strong: rgba(255, 255, 255, 0.18);

    /* 品牌渐变 - 蓝紫 */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-accent: linear-gradient(135deg, #a18cd1 0%, #fbc2eb 100%);
    --gradient-hero: linear-gradient(160deg, #0a0e1a 0%, #131836 40%, #1a1240 100%);
    --gradient-glow: radial-gradient(circle at 50% 0%, rgba(102, 126, 234, 0.25), transparent 60%);

    /* 文字色 */
    --color-text-primary: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.72);
    --color-text-tertiary: rgba(255, 255, 255, 0.5);
    --color-text-muted: rgba(255, 255, 255, 0.38);

    /* 强调色 */
    --color-blue: #4facfe;
    --color-purple: #764ba2;
    --color-cyan: #00f2fe;
    --color-indigo: #667eea;
    --color-green: #00d9a3;
    --color-orange: #ff9a56;

    /* 间距系统 */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(102, 126, 234, 0.35);
    --shadow-glow-cyan: 0 0 40px rgba(0, 242, 254, 0.25);

    /* 容器 */
    --container-max: 1200px;
    --container-narrow: 820px;

    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    /* 字体 */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", Consolas, monospace;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.7;
    font-weight: 400;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul,
ol {
    list-style: none;
}

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

/* ==========================================================================
   3. 排版
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-text-primary);
}

h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.25rem; }

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

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-cyan {
    color: var(--color-cyan);
}

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

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

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

.section {
    padding: var(--space-4xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto var(--space-3xl);
}

.section-header .section-eyebrow {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-cyan);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    background: rgba(0, 242, 254, 0.1);
    border: 1px solid rgba(0, 242, 254, 0.2);
    margin-bottom: var(--space-lg);
}

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

.section-header p {
    font-size: 1.1rem;
    color: var(--color-text-tertiary);
}

/* ==========================================================================
   5. 按钮系统
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-full);
    font-size: 1rem;
    font-weight: 600;
    transition: all var(--transition-base);
    cursor: pointer;
    border: 1px solid transparent;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 50px rgba(102, 126, 234, 0.5);
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text-primary);
    border-color: var(--color-border-strong);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.btn-secondary:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-cyan);
    transform: translateY(-2px);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    border-color: var(--color-border);
}

.btn-ghost:hover {
    color: var(--color-cyan);
    border-color: var(--color-cyan);
}

.btn-lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: 1.1rem;
}

.btn-sm {
    padding: var(--space-xs) var(--space-lg);
    font-size: 0.9rem;
}

.btn .btn-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* ==========================================================================
   6. Header 导航
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    background: rgba(10, 14, 26, 0.7);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.site-header.scrolled {
    background: rgba(10, 14, 26, 0.92);
    padding: var(--space-sm) 0;
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
}

.site-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--color-text-primary);
    flex-shrink: 0;
}

.site-logo .logo-mark {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 800;
    box-shadow: var(--shadow-glow);
}

.site-logo .logo-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.main-nav a {
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-text-primary);
    background: var(--color-surface);
}

.header-cta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-shrink: 0;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

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

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: var(--gradient-glow);
    pointer-events: none;
}

.hero-bg-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    pointer-events: none;
}

.hero-bg-orb.orb-1 {
    width: 500px;
    height: 500px;
    background: var(--color-indigo);
    top: -100px;
    right: -100px;
}

.hero-bg-orb.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--color-purple);
    bottom: -100px;
    left: -100px;
}

.hero-inner {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.hero-content .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    background: rgba(0, 242, 254, 0.1);
    border: 1px solid rgba(0, 242, 254, 0.3);
    color: var(--color-cyan);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
}

.hero-content h1 {
    margin-bottom: var(--space-lg);
    line-height: 1.15;
}

.hero-content .hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2xl);
    max-width: 540px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

.hero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.trust-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-tertiary);
    font-size: 0.9rem;
}

.trust-item .trust-icon {
    width: 18px;
    height: 18px;
    color: var(--color-cyan);
    flex-shrink: 0;
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-phone {
    position: relative;
    width: 320px;
    height: 640px;
    border-radius: 48px;
    background: linear-gradient(145deg, #1a2138, #0f1424);
    padding: 12px;
    box-shadow: var(--shadow-lg), 0 0 60px rgba(102, 126, 234, 0.3);
    border: 1px solid var(--color-border-strong);
}

.hero-phone::before {
    content: "";
    position: absolute;
    top: 18px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 24px;
    background: #000;
    border-radius: var(--radius-full);
    z-index: 3;
}

.hero-phone img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 36px;
}

.hero-phone-glow {
    position: absolute;
    inset: -40px;
    background: var(--gradient-primary);
    filter: blur(60px);
    opacity: 0.3;
    border-radius: 50%;
    z-index: -1;
}

/* ==========================================================================
   8. 介绍文本区
   ========================================================================== */
.intro-section {
    background: var(--color-bg-secondary);
}

.intro-content {
    max-width: 880px;
    margin: 0 auto;
}

.intro-content p {
    font-size: 1.05rem;
    line-height: 1.9;
    margin-bottom: var(--space-lg);
    color: var(--color-text-secondary);
}

.intro-content h3 {
    margin: var(--space-2xl) 0 var(--space-md);
    color: var(--color-text-primary);
}

/* ==========================================================================
   9. 功能卡片网格
   ========================================================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: all var(--transition-base);
    overflow: hidden;
    position: relative;
}

.feature-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-6px);
    border-color: var(--color-border-strong);
    background: var(--color-surface-hover);
    box-shadow: var(--shadow-lg);
}

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

.feature-card .feature-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
}

.feature-card .feature-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    color: #fff;
    box-shadow: var(--shadow-glow);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.feature-card p {
    color: var(--color-text-tertiary);
    font-size: 0.95rem;
}

/* ==========================================================================
   10. 界面展示
   ========================================================================== */
.showcase-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.showcase-item {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 9 / 16;
    cursor: pointer;
    border: 1px solid var(--color-border);
}

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

.showcase-item:hover img {
    transform: scale(1.08);
}

.showcase-item .showcase-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-lg);
    background: linear-gradient(to top, rgba(10, 14, 26, 0.95), transparent);
    color: #fff;
}

.showcase-item .showcase-overlay h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.showcase-item .showcase-overlay span {
    font-size: 0.8rem;
    color: var(--color-text-tertiary);
}

/* ==========================================================================
   11. 下载中心
   ========================================================================== */
.download-section {
    background: var(--color-bg-secondary);
}

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

.download-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    text-align: center;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

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

.download-card .platform-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto var(--space-lg);
    border-radius: var(--radius-lg);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.download-card h3 {
    margin-bottom: var(--space-sm);
}

.download-card .platform-version {
    color: var(--color-cyan);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
}

.download-card .platform-meta {
    text-align: left;
    margin-bottom: var(--space-xl);
    padding: var(--space-md);
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-md);
}

.download-card .platform-meta li {
    display: flex;
    justify-content: space-between;
    padding: var(--space-xs) 0;
    font-size: 0.85rem;
}

.download-card .platform-meta li span:first-child {
    color: var(--color-text-tertiary);
}

.download-card .platform-meta li span:last-child {
    color: var(--color-text-secondary);
}

/* ==========================================================================
   12. 教程卡片
   ========================================================================== */
.tutorial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.tutorial-card {
    display: block;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    transition: all var(--transition-base);
}

.tutorial-card:hover {
    border-color: var(--color-cyan);
    transform: translateY(-4px);
    background: var(--color-surface-hover);
}

.tutorial-card .tutorial-number {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: rgba(0, 242, 254, 0.12);
    color: var(--color-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 800;
    margin-bottom: var(--space-md);
}

.tutorial-card h3 {
    font-size: 1.15rem;
    margin-bottom: var(--space-sm);
}

.tutorial-card p {
    color: var(--color-text-tertiary);
    font-size: 0.9rem;
    margin-bottom: var(--space-md);
}

.tutorial-card .tutorial-link {
    color: var(--color-cyan);
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

/* ==========================================================================
   13. 公告 / 文章卡片
   ========================================================================== */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.post-card {
    display: flex;
    flex-direction: column;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.post-card .post-thumb {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.post-card .post-body {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.post-card .post-category {
    align-self: flex-start;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-cyan);
    background: rgba(0, 242, 254, 0.1);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-sm);
}

.post-card h3 {
    font-size: 1.1rem;
    margin-bottom: var(--space-sm);
    line-height: 1.5;
    color: var(--color-text-primary);
}

.post-card .post-excerpt {
    font-size: 0.9rem;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-md);
    flex: 1;
}

.post-card .post-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   14. 客服中心
   ========================================================================== */
.support-section {
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.support-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

.support-info h3 {
    margin-bottom: var(--space-lg);
}

.support-list {
    display: grid;
    gap: var(--space-md);
}

.support-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.support-item:hover {
    border-color: var(--color-cyan);
    background: var(--color-surface-hover);
}

.support-item .support-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    flex-shrink: 0;
}

.support-item .support-detail h4 {
    font-size: 1rem;
    margin-bottom: 2px;
}

.support-item .support-detail p {
    font-size: 0.85rem;
    color: var(--color-text-tertiary);
    margin: 0;
}

.qrcode-area {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    text-align: center;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.qrcode-area .qrcode-img {
    width: 180px;
    height: 180px;
    margin: 0 auto var(--space-lg);
    border-radius: var(--radius-md);
    object-fit: cover;
    background: #fff;
    padding: var(--space-sm);
}

.qrcode-area h4 {
    margin-bottom: var(--space-sm);
}

.qrcode-area p {
    font-size: 0.85rem;
    color: var(--color-text-tertiary);
}

/* ==========================================================================
   15. FAQ 折叠面板
   ========================================================================== */
.faq-list {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.faq-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item[open] {
    border-color: var(--color-cyan);
    background: var(--color-surface-hover);
}

.faq-item summary {
    padding: var(--space-lg) var(--space-xl);
    font-weight: 600;
    color: var(--color-text-primary);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    transition: color var(--transition-fast);
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: "+";
    font-size: 1.5rem;
    color: var(--color-cyan);
    transition: transform var(--transition-base);
    flex-shrink: 0;
}

.faq-item[open] summary::after {
    transform: rotate(45deg);
}

.faq-item summary:hover {
    color: var(--color-cyan);
}

.faq-answer {
    padding: 0 var(--space-xl) var(--space-lg);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ==========================================================================
   16. CTA 横幅
   ========================================================================== */
.cta-banner {
    background: var(--gradient-primary);
    border-radius: var(--radius-2xl);
    padding: var(--space-3xl) var(--space-2xl);
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-glow);
}

.cta-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.15), transparent 60%);
}

.cta-banner h2 {
    color: #fff;
    margin-bottom: var(--space-md);
    position: relative;
}

.cta-banner p {
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--space-2xl);
    position: relative;
}

.cta-banner .hero-buttons {
    justify-content: center;
    margin-bottom: 0;
}

/* ==========================================================================
   17. Footer
   ========================================================================== */
.site-footer {
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand .site-logo {
    margin-bottom: var(--space-md);
}

.footer-brand p {
    font-size: 0.9rem;
    color: var(--color-text-tertiary);
    max-width: 320px;
}

.footer-col h4 {
    font-size: 0.95rem;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-col a {
    font-size: 0.9rem;
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

.footer-col a:hover {
    color: var(--color-cyan);
}

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.footer-bottom .footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-bottom .footer-links a {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

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

/* ==========================================================================
   18. Archive 列表页
   ========================================================================== */
.page-header-section {
    padding: 140px 0 var(--space-3xl);
    background: var(--gradient-hero);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--gradient-glow);
    pointer-events: none;
}

.page-header-section .container {
    position: relative;
    z-index: 2;
}

.page-header-section h1 {
    margin-bottom: var(--space-md);
}

.page-header-section p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    max-width: 640px;
    margin: 0 auto;
}

.archive-filter {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    justify-content: center;
    margin-bottom: var(--space-3xl);
}

.archive-filter a {
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.archive-filter a:hover,
.archive-filter a.active {
    background: var(--gradient-primary);
    color: #fff;
    border-color: transparent;
}

.archive-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-3xl);
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-xs);
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0 var(--space-md);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.pagination a:hover,
.pagination .current {
    background: var(--gradient-primary);
    color: #fff;
    border-color: transparent;
}

/* ==========================================================================
   19. Single 文章页
   ========================================================================== */
.single-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: var(--space-3xl);
    align-items: start;
}

.article-main {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.article-header {
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border);
}

.article-header .post-category {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-cyan);
    background: rgba(0, 242, 254, 0.1);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
}

.article-header h1 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    margin-bottom: var(--space-md);
    line-height: 1.4;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
    font-size: 0.9rem;
    color: var(--color-text-tertiary);
}

.article-meta span {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

.article-content {
    line-height: 1.9;
}

.article-content p {
    font-size: 1.05rem;
    margin-bottom: var(--space-lg);
    color: var(--color-text-secondary);
}

.article-content h2 {
    font-size: 1.5rem;
    margin: var(--space-2xl) 0 var(--space-md);
    padding-left: var(--space-md);
    border-left: 3px solid var(--color-cyan);
}

.article-content h3 {
    font-size: 1.25rem;
    margin: var(--space-xl) 0 var(--space-md);
}

.article-content img {
    border-radius: var(--radius-lg);
    margin: var(--space-lg) 0;
    border: 1px solid var(--color-border);
}

.article-content ul,
.article-content ol {
    margin: var(--space-md) 0 var(--space-lg);
    padding-left: var(--space-xl);
}

.article-content ul li,
.article-content ol li {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
    list-style: disc;
}

.article-content ol li {
    list-style: decimal;
}

.article-content blockquote {
    border-left: 3px solid var(--color-cyan);
    background: rgba(0, 242, 254, 0.06);
    padding: var(--space-md) var(--space-lg);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin: var(--space-lg) 0;
}

.article-content blockquote p {
    margin: 0;
    color: var(--color-text-secondary);
    font-style: italic;
}

.article-toc {
    position: sticky;
    top: 100px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}

.article-toc h4 {
    font-size: 0.9rem;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
}

.article-toc ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.article-toc a {
    font-size: 0.85rem;
    color: var(--color-text-tertiary);
    display: block;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.article-toc a:hover {
    color: var(--color-cyan);
    background: var(--color-surface-hover);
}

.related-posts {
    margin-top: var(--space-2xl);
}

.related-posts h3 {
    margin-bottom: var(--space-lg);
}

.article-bottom-cta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin-top: var(--space-2xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.bottom-cta-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.bottom-cta-card:hover {
    border-color: var(--color-cyan);
}

/* ==========================================================================
   20. 教程步骤
   ========================================================================== */
.tutorial-steps {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.tutorial-step {
    display: flex;
    gap: var(--space-xl);
    align-items: flex-start;
    padding: var(--space-xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.tutorial-step:hover {
    border-color: var(--color-border-strong);
}

.tutorial-step .step-number {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 800;
    box-shadow: var(--shadow-glow);
}

.tutorial-step .step-content h4 {
    font-size: 1.1rem;
    margin-bottom: var(--space-sm);
}

.tutorial-step .step-content p {
    color: var(--color-text-tertiary);
    font-size: 0.95rem;
}

.tutorial-step .step-image {
    width: 240px;
    height: 160px;
    object-fit: cover;
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

/* ==========================================================================
   21. About 页面
   ========================================================================== */
.about-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.about-hero img {
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
}

.about-content h3 {
    margin: var(--space-2xl) 0 var(--space-md);
}

.about-content p {
    margin-bottom: var(--space-md);
    line-height: 1.9;
}

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

.value-card {
    text-align: center;
    padding: var(--space-2xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.value-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-cyan);
}

.value-card .value-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-md);
    border-radius: var(--radius-lg);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.geo-info {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
}

.geo-info h3 {
    margin-bottom: var(--space-lg);
}

.geo-info dl {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.geo-info dt {
    color: var(--color-text-tertiary);
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.geo-info dd {
    color: var(--color-text-primary);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

/* ==========================================================================
   22. 通用 / 辅助
   ========================================================================== */
.bg-secondary { background: var(--color-bg-secondary); }
.bg-tertiary { background: var(--color-bg-tertiary); }

.icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ==========================================================================
   23. 响应式
   ========================================================================== */
@media (max-width: 1024px) {
    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-buttons,
    .hero-trust {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
        margin-bottom: var(--space-xl);
    }

    .hero-phone {
        width: 260px;
        height: 520px;
    }

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

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

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

    .single-layout {
        grid-template-columns: 1fr;
    }

    .article-toc {
        position: static;
        order: -1;
    }

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

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

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

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-md);
    }

    .main-nav {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        background: rgba(10, 14, 26, 0.98);
        backdrop-filter: blur(20px);
        padding: var(--space-md);
        gap: var(--space-xs);
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-150%);
        transition: transform var(--transition-base);
        max-height: calc(100vh - 64px);
        overflow-y: auto;
    }

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

    .main-nav a {
        padding: var(--space-md);
        font-size: 1rem;
    }

    .menu-toggle {
        display: flex;
    }

    .header-cta .btn-text {
        display: none;
    }

    .section {
        padding: var(--space-3xl) 0;
    }

    .features-grid,
    .download-grid,
    .tutorial-grid,
    .posts-grid,
    .value-grid,
    .showcase-grid,
    .archive-list {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

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

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

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

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

    .tutorial-step {
        flex-direction: column;
    }

    .tutorial-step .step-image {
        width: 100%;
    }

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