/* ===== 问鼎国际平台 — 珊瑚白·杂志风设计系统 ===== */
/* 风格：暖白基底 · 珊瑚主调 · 雾蓝辅色 · 暖金点缀 · 杂志感排版 */

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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
    overflow-x: hidden;
    background: #faf7f4;
    color: #2d3436;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ---------- 色彩变量 ---------- */
:root {
    --bg-primary: #faf7f4;
    --bg-secondary: #f2eeea;
    --bg-card: #ffffff;
    --color-primary: #d4837a;
    --color-primary-dark: #c06b62;
    --color-primary-light: #f0d2ce;
    --color-secondary: #8ba8b5;
    --color-secondary-light: #d0dfe6;
    --color-accent: #c9a97e;
    --color-accent-light: #e8dac4;
    --color-text: #2d3436;
    --color-text-light: #7a8a8a;
    --color-text-lighter: #a8b5b5;
    --color-border: #e5ddd8;
    --color-border-light: #f0eae6;
    --color-white: #ffffff;
    --shadow-sm: 0 2px 8px rgba(45, 52, 54, 0.04), 0 1px 2px rgba(45, 52, 54, 0.06);
    --shadow-md: 0 8px 24px rgba(45, 52, 54, 0.06), 0 2px 6px rgba(45, 52, 54, 0.04);
    --shadow-lg: 0 20px 48px rgba(45, 52, 54, 0.08), 0 4px 12px rgba(45, 52, 54, 0.04);
    --shadow-hover: 0 24px 56px rgba(212, 131, 122, 0.12), 0 6px 16px rgba(45, 52, 54, 0.06);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --font-sans: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
}

/* ---------- 核心布局 ---------- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 28px;
}

.section {
    padding: 100px 0;
    position: relative;
}

.section:nth-child(even) {
    background: var(--bg-secondary);
}

.section:nth-child(even) .section-title {
    color: var(--color-text);
}

/* ---------- 装饰性元素 ---------- */
.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
    opacity: 0.6;
}

.section:first-child::before {
    display: none;
}

/* ---------- 导航 — 固定顶部 ---------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(250, 247, 244, 0.92);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid var(--color-border-light);
    transition: var(--transition);
}

.site-header.scrolled {
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 28px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.25rem;
    text-decoration: none;
    color: var(--color-text);
    letter-spacing: 0.5px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
    font-weight: 800;
    letter-spacing: 0;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.main-nav a {
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-light);
    transition: var(--transition);
    position: relative;
    padding: 4px 0;
    letter-spacing: 0.3px;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.main-nav a:hover {
    color: var(--color-primary);
}

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

.nav-cta {
    padding: 10px 24px !important;
    border-radius: var(--radius-sm) !important;
    color: #fff !important;
    font-weight: 600 !important;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    box-shadow: 0 4px 12px rgba(212, 131, 122, 0.25);
    transition: var(--transition) !important;
}

.nav-cta::after {
    display: none !important;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(212, 131, 122, 0.35) !important;
    color: #fff !important;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    background: none;
    border: none;
}

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

/* ---------- 首页Hero ---------- */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 120px 0 80px;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -20%;
    width: 60%;
    height: 120%;
    background: radial-gradient(ellipse at center, var(--color-primary-light) 0%, transparent 70%);
    opacity: 0.4;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -10%;
    width: 50%;
    height: 100%;
    background: radial-gradient(ellipse at center, var(--color-secondary-light) 0%, transparent 70%);
    opacity: 0.3;
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 600px;
}

.hero-eyebrow {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 6px 18px;
    border-radius: 50px;
    margin-bottom: 20px;
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.hero h1 {
    font-size: 3.2rem;
    line-height: 1.15;
    margin-bottom: 20px;
    font-weight: 800;
    color: var(--color-text);
    letter-spacing: -1px;
}

.hero h1 .text-accent {
    color: var(--color-primary);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.1rem;
    opacity: 0.7;
    max-width: 520px;
    margin-bottom: 36px;
    color: var(--color-text-light);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.hero-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transform: perspective(1000px) rotateY(-3deg) rotateX(1deg);
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-image:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
    box-shadow: var(--shadow-hover);
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
    letter-spacing: 0.3px;
    font-family: var(--font-sans);
}

.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    box-shadow: 0 4px 14px rgba(212, 131, 122, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 28px rgba(212, 131, 122, 0.4);
}

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--color-border);
    color: var(--color-text);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(212, 131, 122, 0.04);
    transform: translateY(-3px);
}

.btn-outline .btn-icon {
    color: var(--color-primary);
}

.btn-icon {
    font-size: 1.1rem;
}

/* ---------- 标签/标题 ---------- */
.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 3px;
    margin-bottom: 14px;
    color: var(--color-primary);
    text-transform: uppercase;
    position: relative;
    padding-left: 36px;
}

.section-label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    transform: translateY(-50%);
    border-radius: 2px;
}

.section-title {
    font-size: 2.4rem;
    margin-bottom: 16px;
    font-weight: 800;
    color: var(--color-text);
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.section-desc {
    max-width: 600px;
    opacity: 0.7;
    margin-bottom: 48px;
    color: var(--color-text-light);
    font-size: 1.05rem;
    line-height: 1.7;
}

/* ---------- 卡片网格 ---------- */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 28px;
}

.category-card {
    border-radius: var(--radius-md);
    padding: 32px 28px;
    border: 1px solid var(--color-border-light);
    background: var(--bg-card);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    opacity: 0;
    transition: var(--transition);
}

.category-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

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

.card-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    font-size: 1.4rem;
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    transition: var(--transition);
}

.category-card:hover .card-icon {
    background: var(--color-primary);
    color: #fff;
    transform: scale(1.05);
}

.category-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--color-text);
}

.category-card p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: 18px;
}

.card-link {
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.card-link:hover {
    gap: 12px;
    color: var(--color-primary-dark);
}

.card-link::after {
    content: '→';
    transition: var(--transition);
}

.card-link:hover::after {
    transform: translateX(4px);
}

/* ---------- 特性块 ---------- */
.feature-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.feature-block.reverse {
    direction: rtl;
}

.feature-block.reverse > * {
    direction: ltr;
}

.feature-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
}

.feature-image:hover {
    box-shadow: var(--shadow-lg);
    transform: scale(1.01);
}

.feature-image img {
    width: 100%;
    height: auto;
    display: block;
}

.feature-text h3 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--color-text);
    line-height: 1.3;
}

.feature-text p {
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 20px;
}

.feature-list {
    list-style: none;
    margin-top: 16px;
}

.feature-list li {
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--color-text);
    font-weight: 500;
}

.feature-list li::before {
    content: '✓';
    font-weight: 700;
    color: var(--color-primary);
    font-size: 1.1rem;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* ---------- 数据条 ---------- */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
    text-align: center;
}

.stat-item {
    padding: 32px 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    background: var(--bg-card);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 20%;
    right: 20%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: 3px 3px 0 0;
    opacity: 0;
    transition: var(--transition);
}

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

.stat-item:hover::after {
    opacity: 1;
    left: 10%;
    right: 10%;
}

.stat-number {
    font-size: 2.6rem;
    font-weight: 800;
    color: var(--color-text);
    letter-spacing: -1px;
    line-height: 1;
    margin-bottom: 6px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.6;
    margin-top: 6px;
    color: var(--color-text-light);
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* ---------- 内容墙 ---------- */
.content-wall {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 28px;
}

.content-wall-item {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border-light);
    background: var(--bg-card);
    transition: var(--transition);
}

.content-wall-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

.content-wall-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: var(--transition);
}

.content-wall-item:hover img {
    transform: scale(1.03);
}

.content-wall-body {
    padding: 24px;
}

.content-wall-body .meta {
    font-size: 0.8rem;
    color: var(--color-text-lighter);
    margin-bottom: 10px;
    display: flex;
    gap: 16px;
    align-items: center;
}

.content-wall-body .meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.content-wall-body h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-text);
    line-height: 1.4;
}

.content-wall-body p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.content-wall-body .card-link {
    margin-top: 14px;
}

/* ---------- FAQ ---------- */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
    overflow: hidden;
    cursor: pointer;
    background: var(--bg-card);
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-sm);
}

.faq-item .faq-question {
    padding: 20px 24px;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1rem;
    color: var(--color-text);
    transition: var(--transition);
}

.faq-item .faq-question::after {
    content: '+';
    font-size: 1.3rem;
    font-weight: 300;
    color: var(--color-primary);
    transition: var(--transition);
}

.faq-item.open .faq-question::after {
    content: '−';
    transform: rotate(180deg);
}

.faq-item .faq-answer {
    padding: 0 24px 20px;
    display: none;
    opacity: 0.7;
    color: var(--color-text-light);
    line-height: 1.7;
    font-size: 0.95rem;
}

.faq-item.open .faq-answer {
    display: block;
    animation: fadeIn 0.3s ease;
}

.faq-item.open {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-sm);
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 0.7;
        transform: translateY(0);
    }
}

/* ---------- CTA横幅 ---------- */
.cta-banner {
    padding: 72px 32px;
    text-align: center;
    border-radius: var(--radius-lg);
    color: #fff;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 50%, var(--color-accent) 100%);
    position: relative;
    overflow: hidden;
    box-shadow: 0 16px 48px rgba(212, 131, 122, 0.25);
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.cta-banner::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -20%;
    width: 50%;
    height: 150%;
    background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.cta-banner h2 {
    color: #fff;
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.cta-banner p {
    color: rgba(255, 255, 255, 0.85);
    max-width: 500px;
    margin: 0 auto 28px;
    font-size: 1.05rem;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

.cta-banner .btn-primary {
    background: #fff;
    color: var(--color-primary-dark);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 1;
}

.cta-banner .btn-primary:hover {
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.15);
    transform: translateY(-3px);
}

/* ---------- 页脚 ---------- */
.site-footer {
    padding: 64px 0 28px;
    background: var(--color-text);
    color: rgba(255, 255, 255, 0.85);
}

.site-footer .container {
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
}

.footer-brand {
}

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

.footer-brand .logo-icon {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
}

.footer-brand p {
    font-size: 0.9rem;
    opacity: 0.6;
    line-height: 1.7;
    max-width: 300px;
}

.footer-col h4 {
    color: #fff;
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.55);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--color-primary-light);
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin-top: 48px;
    padding-top: 24px;
    text-align: center;
    font-size: 0.85rem;
    opacity: 0.4;
    color: rgba(255, 255, 255, 0.6);
}

/* ---------- 工具类 ---------- */
.text-accent {
    color: var(--color-primary);
}

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

.text-center .section-desc {
    margin-left: auto;
    margin-right: auto;
}

.seo-description {
    max-width: 600px;
    margin: 0 auto 48px;
    opacity: 0.7;
    color: var(--color-text-light);
    line-height: 1.7;
}

.mt-0 {
    margin-top: 0;
}

.mb-0 {
    margin-bottom: 0;
}

/* ---------- 额外设计元素 ---------- */
/* 装饰性圆点 */
.decor-dots {
    display: flex;
    gap: 6px;
    margin-bottom: 20px;
}

.decor-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-primary-light);
}

.decor-dots span:nth-child(2) {
    background: var(--color-accent-light);
}

.decor-dots span:nth-child(3) {
    background: var(--color-secondary-light);
}

/* 分割线 */
.divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
    margin: 60px 0;
}

/* 圆角徽章 */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 14px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    letter-spacing: 0.3px;
}

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

/* 价格标签 */
.price-tag {
    display: inline-flex;
    align-items: baseline;
    gap: 2px;
    font-weight: 800;
    color: var(--color-text);
}

.price-tag .currency {
    font-size: 0.8em;
    font-weight: 600;
}

.price-tag .amount {
    font-size: 1.8rem;
    letter-spacing: -1px;
}

.price-tag .period {
    font-size: 0.7em;
    font-weight: 400;
    opacity: 0.5;
}

/* 引用块 */
.blockquote {
    border-left: 3px solid var(--color-primary);
    padding: 16px 24px;
    background: var(--bg-secondary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin: 24px 0;
    font-style: italic;
    color: var(--color-text-light);
    line-height: 1.7;
}

.blockquote cite {
    display: block;
    margin-top: 12px;
    font-style: normal;
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.9rem;
}

/* 标签组 */
.tag-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
    background: var(--bg-secondary);
    color: var(--color-text-light);
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
    cursor: default;
}

.tag:hover {
    border-color: var(--color-primary-light);
    color: var(--color-primary);
}

/* 进度条 */
.progress-bar {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--color-border-light);
    overflow: hidden;
}

.progress-bar .progress-fill {
    height: 100%;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transition: width 1s ease;
}

/* 用户头像组 */
.avatar-group {
    display: flex;
    align-items: center;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--bg-card);
    margin-left: -8px;
    background: var(--color-secondary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--color-secondary);
}

.avatar:first-child {
    margin-left: 0;
}

.avatar-more {
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    font-size: 0.7rem;
}

/* 通知条 */
.notification-bar {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    background: var(--color-accent-light);
    color: var(--color-accent);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
}

.notification-bar.info {
    background: var(--color-secondary-light);
    color: var(--color-secondary);
}

.notification-bar.success {
    background: #e0f0e8;
    color: #3a8a7a;
}

/* 交互动效 */
.hover-lift {
    transition: var(--transition);
}

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

.hover-scale {
    transition: var(--transition);
}

.hover-scale:hover {
    transform: scale(1.02);
}

/* 渐变文字 */
.gradient-text {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ---------- 响应式设计 ---------- */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-content {
        max-width: 100%;
        text-align: center;
    }

    .hero p {
        margin-left: auto;
        margin-right: auto;
    }

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

    .hero-image {
        transform: none;
    }

    .hero-image:hover {
        transform: none;
    }

    .hero h1 {
        font-size: 2.6rem;
    }

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

    .feature-block.reverse {
        direction: ltr;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

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

@media (max-width: 768px) {
    .header-inner {
        height: 64px;
        padding: 0 20px;
    }

    .main-nav {
        display: none;
    }

    .main-nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 64px;
        left: 0;
        width: 100%;
        background: var(--bg-primary);
        padding: 24px 28px;
        gap: 16px;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-md);
    }

    .menu-toggle {
        display: flex;
    }

    .hero {
        min-height: auto;
        padding: 100px 0 60px;
    }

    .hero h1 {
        font-size: 2rem;
    }

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

    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .stat-number {
        font-size: 2rem;
    }

    .cards-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 20px;
    }

    .content-wall {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 20px;
    }

    .section {
        padding: 64px 0;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 28px;
    }

    .section-title {
        font-size: 1.7rem;
    }

    .cta-banner {
        padding: 48px 24px;
    }

    .cta-banner h2 {
        font-size: 1.5rem;
    }

    .faq-item .faq-question {
        padding: 16px 18px;
        font-size: 0.95rem;
    }

    .faq-item .faq-answer {
        padding: 0 18px 16px;
    }

    .container {
        padding: 0 20px;
    }
}

@media (max-width: 480px) {
    .cards-grid,
    .content-wall,
    .stats-bar {
        grid-template-columns: 1fr;
    }

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

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

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

    .hero h1 {
        font-size: 1.7rem;
    }

    .section-title {
        font-size: 1.4rem;
    }

    .stat-number {
        font-size: 1.8rem;
    }

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

    .container {
        padding: 0 16px;
    }

    .section {
        padding: 48px 0;
    }

    .cta-banner {
        padding: 36px 20px;
        border-radius: var(--radius-md);
    }

    .cta-banner h2 {
        font-size: 1.3rem;
    }

    .logo {
        font-size: 1.05rem;
    }

    .logo-icon {
        width: 34px;
        height: 34px;
        font-size: 0.9rem;
    }

    .feature-block {
        gap: 28px;
    }

    .feature-text h3 {
        font-size: 1.3rem;
    }
}

/* ---------- 滚动条美化 ---------- */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-lighter);
}

/* ---------- 选中样式 ---------- */
::selection {
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
}

/* ---------- 焦点样式 ---------- */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ---------- 打印样式 ---------- */
@media print {
    .site-header {
        position: relative;
        background: #fff;
        border-bottom: 1px solid #ddd;
    }

    .hero {
        min-height: auto;
        padding: 40px 0;
    }

    .btn,
    .nav-cta,
    .menu-toggle {
        display: none !important;
    }

    .section {
        padding: 40px 0;
        break-inside: avoid;
    }

    .cta-banner {
        background: #f5f5f5 !important;
        color: #333 !important;
    }

    .cta-banner h2 {
        color: #333 !important;
    }
}