/* ============================================
   N1国际 · 微光流体美学系统
   Awwwards 级视觉语言
   浅色基调 · 暖珊瑚×流光金×天空蓝
   ============================================ */

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

:root {
    --color-coral: #FF7E6B;
    --color-coral-light: #FF9B8A;
    --color-gold: #F5C518;
    --color-gold-soft: #F8E3A0;
    --color-sky: #4A9EFF;
    --color-sky-light: #A3D0FF;
    --color-mint: #2ECC71;
    --color-mint-light: #A8E6CF;
    --color-cream: #FFF8F5;
    --color-ivory: #FFFEFC;
    --color-warm-gray: #FDF6F0;
    --color-stone: #F0EBE6;
    --color-charcoal: #4A4A4A;
    --color-text: #2D2D2D;
    --color-text-light: #7A7A7A;
    --color-border: rgba(255, 126, 107, 0.15);
    --shadow-soft: 0 8px 32px rgba(255, 126, 107, 0.10);
    --shadow-medium: 0 12px 48px rgba(255, 126, 107, 0.15);
    --shadow-hover: 0 20px 60px rgba(255, 126, 107, 0.20);
    --glass-bg: rgba(255, 254, 252, 0.72);
    --glass-border: rgba(255, 126, 107, 0.12);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 28px;
    --radius-xl: 40px;
    --transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    --font-display: 'PingFang SC', system-ui, -apple-system, sans-serif;
}

body {
    font-family: var(--font-display);
    background: var(--color-cream);
    color: var(--color-text);
    overflow-x: hidden;
    line-height: 1.6;
    background-image: radial-gradient(ellipse at 20% 0%, rgba(255, 158, 138, 0.08) 0%, transparent 60%),
                      radial-gradient(ellipse at 80% 100%, rgba(74, 158, 255, 0.06) 0%, transparent 60%);
    background-attachment: fixed;
}

/* 滚动条美化 */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-stone); }
::-webkit-scrollbar-thumb { background: var(--color-coral-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-coral); }

/* 核心布局 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

.section:nth-child(even) {
    background: linear-gradient(135deg, var(--color-ivory) 0%, var(--color-warm-gray) 100%);
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-coral-light), transparent);
    opacity: 0.3;
}

/* 导航 — 毛玻璃漂浮 */
.site-header {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 48px);
    max-width: 1250px;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(1.2);
    -webkit-backdrop-filter: blur(20px) saturate(1.2);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 24px rgba(255, 126, 107, 0.06);
    transition: var(--transition);
}

.site-header.scrolled {
    top: 12px;
    box-shadow: 0 8px 40px rgba(255, 126, 107, 0.12);
    background: rgba(255, 254, 252, 0.88);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 8px 0 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.25rem;
    text-decoration: none;
    color: var(--color-text);
    letter-spacing: -0.5px;
    position: relative;
    padding: 4px 0;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    background: linear-gradient(135deg, var(--color-coral), var(--color-gold));
    color: #fff;
    font-weight: 700;
    box-shadow: 0 4px 16px rgba(255, 126, 107, 0.25);
    position: relative;
    overflow: hidden;
}

.logo-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.3) 50%, transparent 60%);
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
}

.main-nav li {
    position: relative;
}

.main-nav a {
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--color-text);
    padding: 8px 16px;
    border-radius: 100px;
    transition: var(--transition);
    letter-spacing: 0.3px;
    position: relative;
}

.main-nav a:not(.nav-cta):hover {
    background: rgba(255, 126, 107, 0.08);
    color: var(--color-coral);
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 2px;
    background: var(--color-coral);
    border-radius: 2px;
    transition: transform 0.3s ease;
}

.main-nav a:not(.nav-cta):hover::after {
    transform: translateX(-50%) scaleX(1);
}

.nav-cta {
    padding: 8px 24px !important;
    border-radius: 100px !important;
    color: #fff !important;
    font-weight: 600 !important;
    background: linear-gradient(135deg, var(--color-coral), var(--color-gold));
    box-shadow: 0 4px 16px rgba(255, 126, 107, 0.25);
    transition: var(--transition);
    letter-spacing: 0.5px;
}

.nav-cta:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 28px rgba(255, 126, 107, 0.35);
    color: #fff !important;
}

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

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: none;
    background: rgba(255, 126, 107, 0.08);
    border-radius: 12px;
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    transition: var(--transition);
}

.menu-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--color-coral);
    border-radius: 2px;
    transition: var(--transition);
}

.menu-toggle:hover { background: rgba(255, 126, 107, 0.15); }

/* 首页Hero — 流体渐变 + 浮动元素 */
.hero {
    min-height: 85vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
    overflow: hidden;
    background: linear-gradient(160deg, var(--color-ivory) 0%, var(--color-warm-gray) 40%, rgba(255, 158, 138, 0.06) 70%, var(--color-ivory) 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 126, 107, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(74, 158, 255, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.hero-content {
    max-width: 640px;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    font-weight: 600;
    padding: 6px 18px 6px 8px;
    border-radius: 100px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, rgba(255, 126, 107, 0.10), rgba(245, 197, 24, 0.08));
    color: var(--color-coral);
    border: 1px solid rgba(255, 126, 107, 0.10);
    letter-spacing: 0.5px;
}

.hero-eyebrow::before {
    content: '✦';
    font-size: 0.7rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--color-coral);
    color: #fff;
    font-size: 0.6rem;
}

.hero h1 {
    font-size: 3.4rem;
    line-height: 1.15;
    margin-bottom: 24px;
    font-weight: 800;
    letter-spacing: -1.5px;
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-coral) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.hero p {
    font-size: 1.1rem;
    color: var(--color-text-light);
    max-width: 520px;
    margin-bottom: 36px;
    line-height: 1.7;
    font-weight: 400;
}

.hero-buttons {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

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

.hero-image::before {
    content: '';
    position: absolute;
    width: 120%;
    height: 120%;
    background: radial-gradient(circle at center, rgba(255, 126, 107, 0.06), transparent 70%);
    border-radius: 50%;
    animation: pulse-glow 4s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.1); opacity: 1; }
}

.hero-image .hero-card {
    width: 100%;
    max-width: 480px;
    aspect-ratio: 4/3;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(255, 126, 107, 0.06), rgba(245, 197, 24, 0.04));
    border: 1px solid rgba(255, 126, 107, 0.10);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(4px);
}

.hero-image .hero-card-inner {
    text-align: center;
    padding: 40px;
}

.hero-image .hero-card-icon {
    font-size: 4rem;
    margin-bottom: 16px;
    display: block;
    filter: drop-shadow(0 8px 24px rgba(255, 126, 107, 0.20));
}

.hero-image .hero-card-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-coral);
    letter-spacing: 4px;
    text-transform: uppercase;
}

/* 按钮系统 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 100px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
    letter-spacing: 0.3px;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--color-coral), var(--color-gold));
    box-shadow: 0 4px 20px rgba(255, 126, 107, 0.25);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(255, 126, 107, 0.35);
}

.btn-primary::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.10), transparent);
    opacity: 0;
    transition: opacity 0.4s;
}

.btn-primary:hover::after { opacity: 1; }

.btn-outline {
    background: transparent;
    border: 1.5px solid rgba(255, 126, 107, 0.25);
    color: var(--color-coral);
}

.btn-outline:hover {
    border-color: var(--color-coral);
    background: rgba(255, 126, 107, 0.04);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 126, 107, 0.08);
}

/* 标签/标题 */
.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 16px;
    color: var(--color-coral);
    padding: 4px 16px 4px 12px;
    border-radius: 100px;
    background: rgba(255, 126, 107, 0.06);
}

.section-label::before {
    content: '●';
    font-size: 0.4rem;
    color: var(--color-coral);
}

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

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

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

.category-card {
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    background: var(--color-ivory);
    border: 1px solid var(--color-border);
    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-coral), var(--color-gold));
    opacity: 0;
    transition: opacity 0.4s;
}

.category-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-medium);
    border-color: rgba(255, 126, 107, 0.20);
}

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

.card-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.4rem;
    background: linear-gradient(135deg, rgba(255, 126, 107, 0.08), rgba(245, 197, 24, 0.06));
    color: var(--color-coral);
    transition: var(--transition);
}

.category-card:hover .card-icon {
    background: linear-gradient(135deg, var(--color-coral), var(--color-gold));
    color: #fff;
    box-shadow: 0 4px 16px rgba(255, 126, 107, 0.20);
}

.category-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.category-card p {
    font-size: 0.92rem;
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: 18px;
}

.card-link {
    font-weight: 600;
    font-size: 0.88rem;
    text-decoration: none;
    color: var(--color-coral);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.card-link::after {
    content: '→';
    transition: transform 0.3s;
}

.card-link:hover { gap: 12px; }
.card-link:hover::after { transform: translateX(4px); }

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

.feature-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-soft);
    background: linear-gradient(135deg, rgba(255, 126, 107, 0.04), rgba(245, 197, 24, 0.04));
    border: 1px solid var(--color-border);
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-image .feature-placeholder {
    font-size: 4rem;
    opacity: 0.6;
    filter: drop-shadow(0 8px 24px rgba(255, 126, 107, 0.10));
}

.feature-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 126, 107, 0.02), transparent);
    pointer-events: none;
}

.feature-text h2 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.3px;
}

.feature-text p {
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 24px;
}

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

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

.feature-list li::before {
    content: '✓';
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-mint-light), var(--color-mint));
    color: #fff;
    font-size: 0.75rem;
    flex-shrink: 0;
}

/* 数据条 — 卡片式统计 */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}

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

.stat-item::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-coral), var(--color-gold));
    border-radius: 3px 3px 0 0;
    opacity: 0;
    transition: opacity 0.4s;
}

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

.stat-item:hover::before { opacity: 1; }

.stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-coral), var(--color-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    letter-spacing: -1px;
}

.stat-label {
    font-size: 0.92rem;
    color: var(--color-text-light);
    margin-top: 8px;
    font-weight: 500;
}

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

.content-wall-item {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-ivory);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.content-wall-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-medium);
    border-color: rgba(255, 126, 107, 0.15);
}

.content-wall-item .wall-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, rgba(255, 126, 107, 0.06), rgba(245, 197, 24, 0.04));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--color-coral-light);
    position: relative;
    overflow: hidden;
}

.content-wall-item .wall-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, rgba(255,254,252,0.4) 0%, transparent 60%);
}

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

.content-wall-body .wall-date {
    font-size: 0.78rem;
    color: var(--color-text-light);
    letter-spacing: 1px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.content-wall-body .wall-date::before {
    content: '🕐';
    font-size: 0.7rem;
}

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

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

/* FAQ — 温和手风琴 */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

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

.faq-item:hover {
    border-color: rgba(255, 126, 107, 0.20);
}

.faq-item .faq-question {
    padding: 18px 24px;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1rem;
    color: var(--color-text);
    transition: var(--transition);
    user-select: none;
}

.faq-item .faq-question::after {
    content: '+';
    font-size: 1.2rem;
    font-weight: 300;
    color: var(--color-coral);
    transition: transform 0.4s, color 0.3s;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 126, 107, 0.06);
}

.faq-item.open .faq-question::after {
    content: '−';
    transform: rotate(180deg);
    background: var(--color-coral);
    color: #fff;
}

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

.faq-item.open .faq-answer { display: block; }
.faq-item.open { border-color: rgba(255, 126, 107, 0.20); }

/* CTA横幅 — 渐变光晕 */
.cta-banner {
    padding: 64px 40px;
    text-align: center;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-coral), #FF6B4A, var(--color-gold));
    color: #fff !important;
    position: relative;
    overflow: hidden;
    box-shadow: 0 16px 56px rgba(255, 126, 107, 0.25);
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.cta-banner::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.cta-banner h2 {
    color: #fff !important;
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 14px;
    position: relative;
    z-index: 2;
}

.cta-banner p {
    color: rgba(255,255,255,0.85) !important;
    margin-bottom: 28px;
    font-size: 1.05rem;
    position: relative;
    z-index: 2;
}

.cta-banner .btn-primary {
    background: #fff;
    color: var(--color-coral) !important;
    box-shadow: 0 4px 20px rgba(0,0,0,0.10);
    position: relative;
    z-index: 2;
}

.cta-banner .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}

/* 页脚 — 暖调分明 */
.site-footer {
    padding: 64px 0 28px;
    background: linear-gradient(180deg, var(--color-ivory) 0%, var(--color-warm-gray) 100%);
    border-top: 1px solid var(--color-border);
}

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

.footer-brand .logo {
    margin-bottom: 16px;
    font-size: 1.2rem;
}

.footer-brand p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.7;
    max-width: 300px;
}

.footer-col h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--color-text);
    letter-spacing: 0.5px;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col a {
    text-decoration: none;
    font-size: 0.88rem;
    color: var(--color-text-light);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.footer-col a:hover {
    color: var(--color-coral);
    transform: translateX(4px);
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    margin-top: 48px;
    padding-top: 24px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-text-light);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-bottom-links {
    display: flex;
    gap: 20px;
}

.footer-bottom-links a {
    color: var(--color-text-light);
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--transition);
}

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

/* 工具类 */
.text-accent {
    color: var(--color-coral);
    font-weight: 600;
}

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

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

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

/* 装饰性浮动粒子 (纯CSS) */
.floating-particle {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,126,107,0.06), transparent);
    pointer-events: none;
    animation: float-particle 8s ease-in-out infinite;
}

@keyframes float-particle {
    0%, 100% { transform: translateY(0px) scale(1); }
    50% { transform: translateY(-20px) scale(1.1); }
}

/* ============================================
   响应式适配
   ============================================ */

@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-content { max-width: 100%; }
    .hero p { max-width: 100%; }
    .hero-buttons { justify-content: center; }
    .hero-image { display: none; }
    .hero h1 { font-size: 2.8rem; }
    .section-title { font-size: 2rem; }
}

@media (max-width: 768px) {
    .site-header {
        top: 8px;
        width: calc(100% - 16px);
        border-radius: var(--radius-md);
    }
    .header-inner { height: 56px; padding: 0 4px 0 12px; }
    .main-nav { display: none; }
    .menu-toggle { display: flex; }
    .main-nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: calc(100% + 8px);
        left: 8px;
        right: 8px;
        width: auto;
        background: var(--glass-bg);
        backdrop-filter: blur(24px);
        padding: 16px;
        border-radius: var(--radius-md);
        border: 1px solid var(--glass-border);
        box-shadow: var(--shadow-medium);
        gap: 4px;
    }
    .main-nav.open a { padding: 12px 16px; border-radius: 8px; }
    .main-nav.open a::after { display: none; }
    .nav-cta { margin-top: 4px; text-align: center; }

    .hero { min-height: 70vh; padding-top: 72px; }
    .hero h1 { font-size: 2.2rem; }
    .hero p { font-size: 1rem; }

    .feature-block { grid-template-columns: 1fr; gap: 40px; }
    .stats-bar { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .section { padding: 64px 0; }
    .cards-grid { gap: 20px; }
    .content-wall { gap: 20px; }

    .cta-banner { padding: 48px 24px; }
    .cta-banner h2 { font-size: 1.6rem; }

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

@media (max-width: 480px) {
    .cards-grid,
    .content-wall,
    .stats-bar { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .hero-buttons { flex-direction: column; }
    .hero h1 { font-size: 1.8rem; }
    .section-title { font-size: 1.5rem; }
    .stat-number { font-size: 2.2rem; }
    .btn { width: 100%; justify-content: center; }
}

/* ============================================
   打印优化
   ============================================ */
@media print {
    .site-header { position: relative; top: 0; }
    .hero { min-height: auto; padding: 40px 0; }
    .section { padding: 40px 0; }
    .category-card:hover { transform: none; box-shadow: none; }
    .content-wall-item:hover { transform: none; box-shadow: none; }
    .stat-item:hover { transform: none; box-shadow: none; }
}