:root {
    --primary: #0f766e;
    --primary-dark: #0f172a;
    --primary-light: #14b8a6;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #0f172a;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-inverse: #ffffff;
    --border-color: #e2e8f0;
    --shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.12);
    --radius: 16px;
    --radius-sm: 12px;
    --font-display: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--primary-light);
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 48px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-logo svg {
    width: 28px;
    height: 28px;
    stroke: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
}

.nav-links a {
    display: block;
    padding: 12px 24px;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 15px;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
    background: #f0fdfa;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle svg {
    width: 24px;
    height: 24px;
    stroke: var(--text-primary);
    stroke-width: 2;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 24px;
        height: 72px;
    }

    .nav-toggle {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        flex-direction: column;
        padding: 20px 24px;
        gap: 8px;
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-150%);
        opacity: 0;
        transition: all 0.3s ease;
        pointer-events: none;
    }

    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-links a {
        width: 100%;
        padding: 14px 20px;
        font-size: 16px;
    }
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--bg-dark);
    padding: 120px 24px 80px;
}

.hero-images-bg {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
}

.hero-bg-image {
    position: absolute;
    border-radius: 20px;
    overflow: hidden;
    opacity: var(--hero-opacity, 0.4);
    animation-duration: 8s;
    animation-iteration-count: infinite;
    animation-timing-function: ease-in-out;
}

.hero-bg-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-bg-1 { width: 420px; height: 520px; right: 8%; top: 18%; }
.hero-bg-2 { width: 340px; height: 420px; right: 32%; top: 28%; }
.hero-bg-3 { width: 280px; height: 340px; right: 52%; top: 22%; }

@keyframes hero-anim-fade-scale {
    0%, 100% { opacity: var(--hero-opacity, 0.4); transform: scale(1); }
    50% { opacity: calc(var(--hero-opacity, 0.4) * 1.3); transform: scale(1.05); }
}

@keyframes hero-anim-slide-right {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(20px); }
}

@keyframes hero-anim-zoom-blur {
    0%, 100% { filter: blur(0); transform: scale(1); }
    50% { filter: blur(2px); transform: scale(1.08); }
}

@keyframes hero-anim-float-up {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

@keyframes hero-anim-rotate-in {
    0%, 100% { transform: rotate(0deg); }
    50% { transform: rotate(3deg); }
}

.hero-anim-fade-scale { animation-name: hero-anim-fade-scale; }
.hero-anim-slide-right { animation-name: hero-anim-slide-right; }
.hero-anim-zoom-blur { animation-name: hero-anim-zoom-blur; }
.hero-anim-float-up { animation-name: hero-anim-float-up; }
.hero-anim-rotate-in { animation-name: hero-anim-rotate-in; }

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(15, 23, 42, 0.75) 50%, rgba(15, 118, 110, 0.4) 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 800px;
    text-align: center;
    color: var(--text-inverse);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 30px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 28px;
    backdrop-filter: blur(8px);
}

.hero-title {
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.hero-title span {
    color: var(--primary-light);
}

.hero-subtitle {
    font-size: clamp(16px, 2vw, 20px);
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 40px;
    line-height: 1.7;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    transition: all 0.25s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(15, 118, 110, 0.35);
    color: white;
}

.btn-outline {
    background: transparent;
    color: white;
    border: 1.5px solid rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.7);
    color: white;
}

@media (max-width: 768px) {
    .hero-section {
        min-height: auto;
        padding: 140px 24px 100px;
    }

    .hero-bg-1 { width: 240px; height: 300px; right: 5%; top: 15%; }
    .hero-bg-2 { width: 180px; height: 220px; right: 45%; top: 35%; }
    .hero-bg-3 { width: 140px; height: 180px; right: 65%; top: 25%; }
}

/* Section Styles */
.section {
    padding: 100px 0;
}

.section-alt {
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-label {
    display: inline-block;
    padding: 6px 14px;
    background: #f0fdfa;
    color: var(--primary);
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Content Cards */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 28px;
}

@media (max-width: 768px) {
    .content-grid {
        grid-template-columns: 1fr;
    }
}

.content-card {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.content-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

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

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

.content-card-category {
    display: inline-block;
    padding: 4px 12px;
    background: #f0fdfa;
    color: var(--primary);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}

.content-card-title {
    font-size: 19px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.4;
}

.content-card-summary {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.content-card-meta {
    font-size: 13px;
    color: var(--text-muted);
}

/* Link Cards */
.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

@media (max-width: 768px) {
    .links-grid {
        grid-template-columns: 1fr;
    }
}

.link-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 24px;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    text-decoration: none;
}

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

.link-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 700;
    flex-shrink: 0;
}

.link-info {
    flex: 1;
    min-width: 0;
}

.link-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.link-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.link-url {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 8px;
    word-break: break-all;
}

/* Footer */
.site-footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 80px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 60px;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

.footer-brand h3 {
    color: white;
    font-size: 22px;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-title {
    color: white;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    transition: color 0.2s;
}

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

.footer-contact p {
    font-size: 14px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-contact svg {
    width: 16px;
    height: 16px;
    stroke: var(--primary-light);
    stroke-width: 1.8;
    fill: none;
    flex-shrink: 0;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-beian {
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-beian img {
    width: 16px;
    height: 16px;
}

/* Cookie Banner - Top Position */
.cookie-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1e293b 100%);
    color: rgba(255, 255, 255, 0.9);
    padding: 12px 0;
    z-index: 9999;
    transform: translateY(-100%);
    opacity: 0;
    transition: all 0.4s ease;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

.cookie-banner.show {
    transform: translateY(0);
    opacity: 1;
}

.main-nav.cookie-shift {
    top: 52px;
}

.cookie-banner-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.cookie-banner-content {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.cookie-banner-content svg {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
}

.cookie-banner-title {
    font-size: 14px;
    font-weight: 600;
    color: white;
    margin-bottom: 1px;
}

.cookie-banner-desc {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.5;
}

.cookie-banner-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.cookie-banner-link {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.2s;
}

.cookie-banner-link:hover {
    color: var(--primary-light);
}

.cookie-banner-btn {
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
}

.cookie-banner-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(15, 118, 110, 0.3);
}

@media (max-width: 768px) {
    .cookie-banner-container {
        padding: 0 24px;
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .cookie-banner-content {
        flex-direction: column;
        gap: 8px;
    }

    .cookie-banner-actions {
        width: 100%;
        justify-content: center;
    }

    .cookie-banner-btn {
        padding: 10px 28px;
    }

    .main-nav.cookie-shift {
        top: 76px;
    }
}

/* Utilities */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

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

.mt-4 {
    margin-top: 16px;
}