/* style.css - 金年会官网首页 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root {
    --bg-primary: #f8f9fc;
    --bg-secondary: #ffffff;
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a6a;
    --accent: #f0c040;
    --accent-light: #f7d97a;
    --accent-dark: #d4a830;
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(255, 255, 255, 0.3);
    --shadow: 0 8px 32px rgba(0,0,0,0.08);
    --radius: 20px;
    --radius-sm: 12px;
    --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --gradient-1: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --gradient-2: linear-gradient(135deg, #f0c040 0%, #f7d97a 100%);
}
.dark-mode {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --text-primary: #e8e8f0;
    --text-secondary: #a0a0b8;
    --glass-bg: rgba(26, 26, 46, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);
    --shadow: 0 8px 32px rgba(0,0,0,0.5);
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background var(--transition), color var(--transition);
    overflow-x: hidden;
}
a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.3s;
}
a:hover {
    color: var(--accent-dark);
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
    transition: background var(--transition);
}
nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    max-width: 1200px;
    margin: 0 auto;
}
.logo {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.logo svg {
    width: 32px;
    height: 32px;
}
.nav-links {
    display: flex;
    gap: 20px;
    list-style: none;
    font-weight: 500;
    font-size: 0.95rem;
}
.nav-links a {
    color: var(--text-secondary);
    padding: 6px 0;
    position: relative;
    transition: color 0.3s;
}
.nav-links a:hover, .nav-links a.active {
    color: var(--accent);
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s;
}
.nav-links a:hover::after, .nav-links a.active::after {
    width: 100%;
}
.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}
.dark-toggle {
    background: none;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.3s, transform 0.3s;
    padding: 4px;
}
.dark-toggle:hover {
    color: var(--accent);
    transform: rotate(20deg);
}
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.6rem;
    cursor: pointer;
    color: var(--text-primary);
}
.mobile-menu {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    width: 100%;
    background: var(--bg-secondary);
    padding: 20px 24px;
    box-shadow: var(--shadow);
    z-index: 999;
    border-bottom: 1px solid var(--glass-border);
}
.mobile-menu.open {
    display: block;
}
.mobile-menu a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid rgba(128,128,128,0.2);
    color: var(--text-primary);
    font-weight: 500;
}
.mobile-menu a:last-child {
    border-bottom: none;
}
@media (max-width: 900px) {
    .nav-links {
        display: none;
    }
    .menu-toggle {
        display: block;
    }
}
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 24px 80px;
    position: relative;
    background: var(--gradient-1);
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -40%;
    left: -20%;
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, rgba(240,192,64,0.15) 0%, transparent 70%);
    pointer-events: none;
}
.hero-content {
    text-align: center;
    max-width: 800px;
    position: relative;
    z-index: 2;
}
.hero h1 {
    font-size: clamp(2.8rem, 8vw, 5rem);
    font-weight: 900;
    line-height: 1.1;
    color: #fff;
    margin-bottom: 24px;
    letter-spacing: -1px;
}
.hero h1 span {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero p {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.7);
    max-width: 600px;
    margin: 0 auto 40px;
}
.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.btn {
    padding: 14px 40px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.btn-primary {
    background: var(--gradient-2);
    color: #1a1a2e;
    box-shadow: 0 4px 20px rgba(240,192,64,0.3);
}
.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(240,192,64,0.4);
}
.btn-outline {
    background: transparent;
    border: 2px solid rgba(255,255,255,0.3);
    color: #fff;
}
.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-4px);
}
.hero-slider {
    margin-top: 48px;
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}
.hero-slider .slide-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
}
.hero-slider .slide-dot.active {
    background: var(--accent);
    transform: scale(1.3);
}
section {
    padding: 100px 24px;
}
.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}
.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 60px;
    font-size: 1.05rem;
}
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
}
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 32px 28px;
    box-shadow: var(--shadow);
    transition: transform 0.4s, box-shadow 0.4s;
}
.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(0,0,0,0.12);
}
.card-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 20px;
}
.card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 12px;
}
.card p {
    color: var(--text-secondary);
    line-height: 1.7;
}
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}
.stat-item {
    padding: 24px;
}
.stat-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--accent);
    line-height: 1.2;
}
.stat-label {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-top: 8px;
}
@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
}
.testimonial-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
}
.testimonial-card p {
    font-style: italic;
    color: var(--text-secondary);
    margin-bottom: 16px;
}
.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}
.testimonial-author svg {
    width: 44px;
    height: 44px;
    border-radius: 50%;
}
.faq-item {
    border-bottom: 1px solid rgba(128,128,128,0.15);
    padding: 20px 0;
    cursor: pointer;
}
.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 1.1rem;
}
.faq-question span {
    transition: transform 0.3s;
}
.faq-item.open .faq-question span {
    transform: rotate(180deg);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease, padding 0.3s;
    color: var(--text-secondary);
}
.faq-item.open .faq-answer {
    max-height: 300px;
    padding-top: 16px;
}
.howto-step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    margin-bottom: 32px;
}
.howto-step .step-num {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.2rem;
    color: #1a1a2e;
    flex-shrink: 0;
}
.howto-step h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 6px;
}
.howto-step p {
    color: var(--text-secondary);
}
.breadcrumb {
    display: flex;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding: 16px 0;
    flex-wrap: wrap;
}
.breadcrumb a {
    color: var(--accent);
}
.search-box {
    display: flex;
    max-width: 400px;
    margin: 0 auto 40px;
    border-radius: 50px;
    overflow: hidden;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
}
.search-box input {
    flex: 1;
    padding: 14px 20px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
}
.search-box input::placeholder {
    color: var(--text-secondary);
}
.search-box button {
    padding: 14px 24px;
    background: var(--accent);
    border: none;
    font-weight: 600;
    color: #1a1a2e;
    cursor: pointer;
    transition: background 0.3s;
}
.search-box button:hover {
    background: var(--accent-dark);
}
.related-articles {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
    margin-top: 40px;
}
.article-card {
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 24px;
    transition: transform 0.3s;
}
.article-card:hover {
    transform: translateY(-4px);
}
.article-card h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}
.article-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}
.article-card .meta {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-top: 12px;
    display: flex;
    gap: 12px;
}
.pagination {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 40px;
}
.pagination a {
    padding: 8px 16px;
    border-radius: 8px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    transition: background 0.3s;
}
.pagination a:hover {
    background: var(--accent);
    color: #1a1a2e;
}
.footer {
    background: var(--gradient-1);
    color: rgba(255,255,255,0.7);
    padding: 60px 24px 30px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}
.footer h4 {
    color: #fff;
    margin-bottom: 16px;
    font-size: 1.1rem;
}
.footer a {
    color: rgba(255,255,255,0.6);
    display: block;
    margin-bottom: 8px;
    transition: color 0.3s;
}
.footer a:hover {
    color: var(--accent);
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    margin-top: 40px;
    text-align: center;
    font-size: 0.9rem;
}
@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent);
    color: #1a1a2e;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
    transition: opacity 0.4s, transform 0.3s;
    opacity: 0;
    pointer-events: none;
    z-index: 999;
}
.back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
}
.back-to-top:hover {
    transform: translateY(-4px);
}
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}
.svg-icon {
    width: 100%;
    height: auto;
    max-width: 100%;
}
.partner-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    opacity: 0.6;
    transition: opacity 0.3s;
}
.partner-logo:hover {
    opacity: 1;
}
.news-list {
    display: grid;
    gap: 24px;
}
.news-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 20px 0;
    border-bottom: 1px solid rgba(128,128,128,0.1);
}
.news-item .date {
    color: var(--text-secondary);
    font-size: 0.9rem;
    min-width: 80px;
}
.news-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
}
.news-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}
.sitemap {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}
.sitemap a {
    color: var(--text-secondary);
    padding: 6px 0;
}
.sitemap a:hover {
    color: var(--accent);
}