/* ========================================
   Itch.io 展示官网 - 主样式文件
   ======================================== */

/* CSS 变量 */
:root {
    --primary: #f25c5c;
    --primary-dark: #d94a4a;
    --primary-light: #f76e6e;
    --accent: #f78080;
    --accent-light: #fa9e9e;
    --bg-light: #f9f9f9;
    --bg-white: #fafafa;
    --bg-dark: #1a1a2e;
    --bg-dark-alt: #2c2c2c;
    --text-dark: #222222;
    --text-body: #555555;
    --text-light: #999999;
    --white: #ffffff;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: all 0.3s ease;
    --font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 100px 0;
}

.section-dark {
    background-color: var(--bg-dark);
    color: var(--white);
}

.section-light {
    background-color: var(--bg-light);
}

/* 通用区块头部 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    background: linear-gradient(135deg, rgba(242, 92, 92, 0.1), rgba(247, 128, 128, 0.1));
    color: var(--primary);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.section-badge.light {
    background: rgba(255, 255, 255, 0.15);
    color: var(--accent-light);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--text-dark);
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-title.light {
    color: var(--white);
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-family: var(--font-family);
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    text-align: center;
    white-space: nowrap;
}

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

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(242, 92, 92, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 8px 25px rgba(242, 92, 92, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.6);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--white);
}

.btn-white {
    background: var(--white);
    color: var(--primary);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.btn-white:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.btn-sm {
    padding: 8px 20px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.05rem;
}

.btn-nav {
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    font-size: 0.9rem;
    box-shadow: 0 2px 10px rgba(242, 92, 92, 0.25);
}

/* ========================================
   头部导航
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: none;
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 900;
    font-size: 1.4rem;
    color: var(--primary);
}

.logo-img {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
}

.logo-text {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-list a {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-body);
    transition: var(--transition);
}

.nav-list a:hover,
.nav-list a.active {
    color: var(--primary);
    background: rgba(242, 92, 92, 0.08);
}

.nav-list a i {
    font-size: 0.85rem;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-dark);
    cursor: pointer;
    padding: 8px;
}

/* ========================================
   Hero 区域
   ======================================== */
.hero {
    position: relative;
    background: var(--white);
    padding-top: 72px;
    overflow: hidden;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    padding: 60px 0 70px;
}

.hero-text {
    position: relative;
    z-index: 2;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    background: rgba(242, 92, 92, 0.08);
    border: none;
    border-radius: 50px;
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 700;
}

.tag i {
    font-size: 0.7rem;
    color: var(--primary);
}

.hero-title {
    font-size: 3rem;
    font-weight: 900;
    color: var(--text-dark);
    margin-bottom: 16px;
    line-height: 1.15;
    letter-spacing: -0.5px;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--text-light);
    margin-bottom: 28px;
    font-weight: 400;
    line-height: 1.8;
    max-width: 480px;
}

.hero-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 36px;
    flex-wrap: wrap;
}

.btn-ghost {
    background: transparent;
    color: var(--text-body);
    border: 2px solid #e2e2e2;
}

.btn-ghost:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(242, 92, 92, 0.04);
}

.hero-stats {
    display: flex;
    gap: 0;
}

.stat-item {
    text-align: left;
    padding-right: 28px;
    margin-right: 28px;
    position: relative;
    border-right: 2px solid #eee;
}

.stat-item:last-child {
    border-right: none;
    padding-right: 0;
    margin-right: 0;
}

.stat-num {
    display: block;
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--primary);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.78rem;
    color: var(--text-light);
    font-weight: 600;
}

/* Hero 右侧视觉区域 */
.hero-visual {
    position: relative;
    height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-glow {
    position: absolute;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(242, 92, 92, 0.12) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.hero-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 22px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.04);
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-dark);
    white-space: nowrap;
    transition: transform 0.3s ease;
    animation: cardFloat 6s ease-in-out infinite;
}

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

.hero-card-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.hero-card-icon i {
    font-size: 1rem;
    color: var(--white);
}

.hero-card-1 {
    top: 15%;
    left: 8%;
    animation-delay: 0s;
}

.hero-card-2 {
    top: 5%;
    right: 5%;
    animation-delay: -1.5s;
}

.hero-card-3 {
    bottom: 10%;
    left: 5%;
    animation-delay: -3s;
}

.hero-card-4 {
    bottom: 20%;
    right: 0;
    animation-delay: -4.5s;
}

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

/* ========================================
   关于区域
   ======================================== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-desc {
    font-size: 1.15rem;
    line-height: 1.9;
    color: var(--text-body);
    margin-bottom: 30px;
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 30px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 20px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    font-weight: 600;
    color: var(--text-dark);
    transition: var(--transition);
}

.highlight-item:hover {
    background: linear-gradient(135deg, rgba(242, 92, 92, 0.05), rgba(247, 128, 128, 0.05));
    transform: translateX(5px);
}

.highlight-item i {
    font-size: 1.2rem;
    color: var(--primary);
    width: 24px;
    text-align: center;
}

.about-visual {
    display: grid;
    gap: 20px;
}

.visual-card {
    padding: 28px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: var(--transition);
}

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

.visual-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(242, 92, 92, 0.1), rgba(247, 128, 128, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.visual-icon i {
    font-size: 1.3rem;
    color: var(--primary);
}

.visual-card h3 {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.visual-card p {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* ========================================
   平台特色
   ======================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    position: relative;
    padding: 40px 30px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.15);
}

.feature-card.featured {
    background: linear-gradient(135deg, rgba(242, 92, 92, 0.15), rgba(247, 128, 128, 0.1));
    border-color: rgba(242, 92, 92, 0.25);
}

.feature-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    padding: 4px 16px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 800;
    border-radius: 50px;
    letter-spacing: 0.5px;
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-icon i {
    font-size: 1.5rem;
    color: var(--white);
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 20px;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.75);
}

.feature-list li i {
    font-size: 0.7rem;
    color: var(--accent-light);
    flex-shrink: 0;
}

/* ========================================
   平台功能
   ======================================== */
.functions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.function-card {
    padding: 36px 28px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.04);
    text-align: center;
    transition: var(--transition);
}

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

.function-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(242, 92, 92, 0.08), rgba(247, 128, 128, 0.08));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: var(--transition);
}

.function-card:hover .function-icon {
    background: linear-gradient(135deg, var(--primary), var(--accent));
}

.function-icon i {
    font-size: 1.6rem;
    color: var(--primary);
    transition: var(--transition);
}

.function-card:hover .function-icon i {
    color: var(--white);
}

.function-card h3 {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.function-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.6;
}

.function-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary);
}

.function-link:hover {
    gap: 10px;
    color: var(--primary-dark);
}

/* ========================================
   游戏类型
   ======================================== */
.genres-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.genre-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 32px 20px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 2px solid transparent;
    text-align: center;
    transition: var(--transition);
}

.genre-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.genre-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    transition: var(--transition);
}

.genre-card:hover .genre-icon {
    background: linear-gradient(135deg, var(--primary), var(--accent));
}

.genre-icon i {
    font-size: 1.5rem;
    color: var(--primary);
    transition: var(--transition);
}

.genre-card:hover .genre-icon i {
    color: var(--white);
}

.genre-card h3 {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.genre-count {
    font-size: 0.8rem;
    color: var(--text-light);
    font-weight: 600;
}

/* ========================================
   开发者支持
   ======================================== */
.developer-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
    margin-bottom: 50px;
}

.dev-card {
    position: relative;
    padding: 36px 24px 30px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: var(--transition);
    overflow: hidden;
}

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

.dev-number {
    position: absolute;
    top: -8px;
    right: -5px;
    font-size: 4rem;
    font-weight: 900;
    color: rgba(242, 92, 92, 0.06);
    line-height: 1;
    pointer-events: none;
}

.dev-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(242, 92, 92, 0.1), rgba(247, 128, 128, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
}

.dev-icon i {
    font-size: 1.3rem;
    color: var(--primary);
}

.dev-card h3 {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.dev-card p {
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.5;
}

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

/* ========================================
   特色项目
   ======================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.project-card {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 30px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.project-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
}

.project-img {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-img i {
    font-size: 2rem;
    color: var(--white);
}

.project-info h3 {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 8px;
}

.project-info p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.65);
    margin-bottom: 14px;
    line-height: 1.6;
}

.project-info .btn-sm {
    background: rgba(255, 255, 255, 0.12);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.project-info .btn-sm:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ========================================
   用户评价
   ======================================== */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.review-card {
    padding: 36px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: var(--transition);
}

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

.review-stars {
    margin-bottom: 20px;
    display: flex;
    gap: 3px;
}

.review-stars i {
    color: #fbbf24;
    font-size: 1rem;
}

.review-text {
    font-size: 1.05rem;
    color: var(--text-dark);
    line-height: 1.8;
    margin-bottom: 24px;
    font-style: italic;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 14px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
}

.author-avatar i {
    color: var(--white);
    font-size: 1.1rem;
}

.author-name {
    display: block;
    font-weight: 800;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.author-role {
    font-size: 0.8rem;
    color: var(--text-light);
}

/* ========================================
   最新资讯
   ======================================== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.news-card {
    display: flex;
    flex-direction: column;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: var(--transition);
}

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

.news-img {
    height: 160px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
}

.news-img i {
    font-size: 2.5rem;
    color: rgba(255, 255, 255, 0.5);
}

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

.news-date {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 12px;
}

.news-info h3 {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 10px;
    line-height: 1.5;
}

.news-info p {
    font-size: 0.88rem;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 16px;
    flex: 1;
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--primary);
}

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

/* ========================================
   FAQ
   ======================================== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.04);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-item.active {
    border-color: var(--primary);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 22px 28px;
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-family);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-dark);
    text-align: left;
    gap: 16px;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--primary);
}

.faq-icon {
    font-size: 0.85rem;
    color: var(--text-light);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    color: var(--primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-answer p {
    padding: 0 28px 22px;
    font-size: 0.95rem;
    color: var(--text-body);
    line-height: 1.8;
}

/* ========================================
   CTA 横幅
   ======================================== */
.cta {
    position: relative;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    overflow: hidden;
    text-align: center;
}

.cta-bg-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.cta-shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
}

.cta-shape-1 {
    width: 400px;
    height: 400px;
    top: -200px;
    right: -100px;
}

.cta-shape-2 {
    width: 300px;
    height: 300px;
    bottom: -150px;
    left: -80px;
}

.cta-content {
    position: relative;
    z-index: 2;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--white);
    margin-bottom: 16px;
    line-height: 1.2;
}

.cta-subtitle {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 36px;
}

/* ========================================
   底部
   ======================================== */
.footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.7);
    padding-top: 80px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.7;
    margin-bottom: 24px;
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-col h4 {
    font-size: 1rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 20px;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
    transition: var(--transition);
}

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

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 28px 0;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.4);
    transition: var(--transition);
}

.footer-legal a:hover {
    color: var(--primary);
}

/* ========================================
   返回顶部按钮
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(242, 92, 92, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(242, 92, 92, 0.4);
}

/* ========================================
   子页面通用样式
   ======================================== */
.page-hero {
    background: var(--bg-light);
    padding: 120px 0 50px;
    text-align: center;
}

.page-hero h1 {
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.page-hero p {
    font-size: 1.05rem;
    color: var(--text-light);
    max-width: 560px;
    margin: 0 auto;
}

.page-content {
    padding: 60px 0 80px;
}

.page-content .container {
    max-width: 860px;
}

.page-content h2 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-dark);
    margin: 40px 0 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--bg-light);
}

.page-content h2:first-child {
    margin-top: 0;
}

.page-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    margin: 28px 0 12px;
}

.page-content p {
    font-size: 0.95rem;
    color: var(--text-body);
    line-height: 1.9;
    margin-bottom: 16px;
}

.page-content ul,
.page-content ol {
    padding-left: 24px;
    margin-bottom: 16px;
}

.page-content li {
    font-size: 0.95rem;
    color: var(--text-body);
    line-height: 1.9;
    margin-bottom: 6px;
}

.page-content strong {
    color: var(--text-dark);
}

.page-content .info-card {
    background: var(--bg-light);
    border-radius: var(--radius-md);
    padding: 24px 28px;
    margin: 20px 0;
    border-left: 4px solid var(--primary);
}

.page-content .info-card p {
    margin-bottom: 0;
}

/* 子页面 FAQ 样式复用首页 */
.page-content .faq-list {
    max-width: 100%;
}

/* ========================================
   文章内页样式
   ======================================== */
.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    padding-bottom: 24px;
    margin-bottom: 32px;
    border-bottom: 2px solid var(--bg-light);
}

.article-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.88rem;
    color: var(--text-light);
}

.article-meta-item i {
    color: var(--primary);
    font-size: 0.85rem;
}

.article-tag {
    display: inline-block;
    padding: 3px 12px;
    background: rgba(242, 92, 92, 0.08);
    color: var(--primary);
    border-radius: 50px;
    font-size: 0.78rem;
    font-weight: 700;
}

.article-body {
    font-size: 1rem;
    line-height: 2;
    color: var(--text-body);
}

.article-body h2 {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-dark);
    margin: 36px 0 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--bg-light);
}

.article-body h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    margin: 24px 0 12px;
}

.article-body p {
    margin-bottom: 18px;
}

.article-body ul,
.article-body ol {
    padding-left: 24px;
    margin-bottom: 18px;
}

.article-body li {
    margin-bottom: 8px;
    line-height: 1.9;
}

.article-body blockquote {
    margin: 24px 0;
    padding: 20px 24px;
    background: var(--bg-light);
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-body);
    font-style: italic;
}

.article-body blockquote p {
    margin-bottom: 0;
}

.article-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 48px;
    padding-top: 28px;
    border-top: 2px solid var(--bg-light);
    gap: 16px;
}

.article-nav a {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary);
    padding: 10px 20px;
    border-radius: 50px;
    background: rgba(242, 92, 92, 0.06);
    transition: var(--transition);
}

.article-nav a:hover {
    background: rgba(242, 92, 92, 0.12);
}

.article-nav .nav-placeholder {
    visibility: hidden;
}

/* ========================================
   响应式布局
   ======================================== */
@media (max-width: 1024px) {
    .hero-inner {
        gap: 32px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-visual {
        height: 320px;
    }

    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .genres-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .developer-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

@media (max-width: 768px) {
    .section {
        padding: 70px 0;
    }

    .section-title {
        font-size: 2rem;
    }

    .nav {
        position: fixed;
        top: 72px;
        left: 0;
        width: 100%;
        background: var(--white);
        box-shadow: var(--shadow-lg);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease;
    }

    .nav.active {
        max-height: 500px;
    }

    .nav-list {
        flex-direction: column;
        padding: 16px;
        gap: 4px;
    }

    .nav-list a {
        padding: 12px 16px;
        width: 100%;
        border-radius: var(--radius-sm);
    }

    .btn-nav {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 32px;
        padding: 40px 0 50px;
    }

    .hero-tags {
        justify-content: center;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
        max-width: 100%;
        margin: 0 auto 24px;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        height: 260px;
    }

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

    .features-grid {
        grid-template-columns: 1fr;
        max-width: 420px;
        margin: 0 auto;
    }

    .functions-grid {
        grid-template-columns: 1fr;
        max-width: 420px;
        margin: 0 auto;
    }

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

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

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

    .reviews-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .news-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

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

    .footer-links {
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }

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

    .cta-title {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .hero-inner {
        padding: 32px 0 40px;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .hero-stats {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }

    .stat-item {
        border-right: none;
        padding-right: 0;
        margin-right: 0;
        text-align: center;
    }

    .hero-visual {
        height: 220px;
    }

    .hero-card {
        padding: 10px 16px;
        font-size: 0.8rem;
    }

    .hero-card-icon {
        width: 32px;
        height: 32px;
    }

    .hero-card-icon i {
        font-size: 0.85rem;
    }

    .genres-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .developer-grid {
        grid-template-columns: 1fr;
        max-width: 320px;
        margin: 0 auto 50px;
    }

    .project-card {
        flex-direction: column;
        text-align: center;
    }

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

    .faq-question {
        padding: 18px 20px;
        font-size: 0.95rem;
    }

    .faq-answer p {
        padding: 0 20px 18px;
    }
}