/* ============================================================
   Gate官网-大门加密货币交易所 - 主样式表
   配色：深色(#0d1117) + Gate青绿(#17c3b2) + 合规金(#f59e0b)
         + 安全蓝(#2563eb) + 白色
   ============================================================ */

/* === Reset & Base === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-dark: #0d1117;
    --bg-card: #161b22;
    --bg-card-hover: #1c2533;
    --bg-nav: rgba(13, 17, 23, 0.92);
    --gate-teal: #17c3b2;
    --gate-teal-dark: #0e9e8f;
    --gate-teal-light: #5de0d2;
    --compliance-gold: #f59e0b;
    --compliance-gold-light: #fbbf24;
    --security-blue: #2563eb;
    --security-blue-light: #60a5fa;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #5c6670;
    --border-color: #21262d;
    --border-light: #30363d;
    --shadow: 0 4px 24px rgba(0,0,0,0.4);
    --shadow-teal: 0 0 30px rgba(23, 195, 178, 0.15);
    --shadow-gold: 0 0 20px rgba(245, 158, 11, 0.12);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --transition: 0.3s ease;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

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

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

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

ul {
    list-style: none;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
}

h1 { font-size: clamp(2rem, 4vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }

/* === Container === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* === Navigation === */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--bg-nav);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-brand {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--gate-teal);
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-brand svg {
    width: 32px;
    height: 32px;
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: color var(--transition);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gate-teal);
    transition: width var(--transition);
    border-radius: 2px;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--gate-teal);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* === Hero Section === */
.hero {
    padding: 140px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: radial-gradient(ellipse 80% 60% at 50% 30%, rgba(23,195,178,0.08) 0%, transparent 60%),
                radial-gradient(ellipse 60% 50% at 20% 50%, rgba(37,99,235,0.06) 0%, transparent 50%),
                radial-gradient(ellipse 60% 50% at 80% 50%, rgba(245,158,11,0.05) 0%, transparent 50%);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%2317c3b2' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    padding: 6px 20px;
    background: rgba(23, 195, 178, 0.12);
    border: 1px solid rgba(23, 195, 178, 0.25);
    color: var(--gate-teal);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero h1 {
    margin-bottom: 20px;
}

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

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 36px;
    line-height: 1.8;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
}

.hero-tag {
    padding: 8px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.88rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition);
}

.hero-tag:hover {
    border-color: var(--gate-teal);
    color: var(--gate-teal);
    box-shadow: var(--shadow-teal);
}

.hero-tag .tag-icon {
    font-size: 1rem;
}

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

.hero-visual {
    margin-top: 60px;
    position: relative;
    z-index: 2;
}

.hero-visual img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    margin: 0 auto;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gate-teal), var(--gate-teal-dark));
    color: #fff;
    box-shadow: 0 4px 20px rgba(23, 195, 178, 0.3);
    animation: btn-pulse 2.5s ease-in-out infinite;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(23, 195, 178, 0.45);
    color: #fff;
}

.btn-secondary {
    background: transparent;
    color: var(--gate-teal);
    border: 2px solid var(--gate-teal);
}

.btn-secondary:hover {
    background: rgba(23, 195, 178, 0.1);
    transform: translateY(-2px);
}

.btn-gold {
    background: linear-gradient(135deg, var(--compliance-gold), #d97706);
    color: #fff;
    box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
}

.btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(245, 158, 11, 0.45);
    color: #fff;
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.1rem;
}

/* === Sections === */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-header h2 {
    margin-bottom: 12px;
}

.section-header h2 .highlight {
    background: linear-gradient(135deg, var(--gate-teal), var(--gate-teal-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 600px;
    margin: 0 auto;
}

.section-dark {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

/* === Stats Bar === */
.stats-bar {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 48px;
    padding: 20px 0;
    margin-bottom: 40px;
}

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

.stat-number {
    font-size: 2.4rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--gate-teal), var(--compliance-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 4px;
}

/* === Features Grid === */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: var(--gate-teal);
    transition: height 0.4s ease;
    border-radius: 0 0 4px 0;
}

.feature-card:hover::before {
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-6px);
    border-color: var(--gate-teal);
    box-shadow: var(--shadow-teal);
    background: var(--bg-card-hover);
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 20px;
    background: rgba(23, 195, 178, 0.1);
    color: var(--gate-teal);
}

.feature-card:nth-child(2) .feature-icon {
    background: rgba(245, 158, 11, 0.1);
    color: var(--compliance-gold);
}

.feature-card:nth-child(3) .feature-icon {
    background: rgba(37, 99, 235, 0.1);
    color: var(--security-blue);
}

.feature-card:nth-child(4) .feature-icon {
    background: rgba(245, 158, 11, 0.08);
    color: var(--compliance-gold-light);
}

.feature-card:nth-child(5) .feature-icon {
    background: rgba(23, 195, 178, 0.08);
    color: var(--gate-teal-light);
}

.feature-card:nth-child(6) .feature-icon {
    background: rgba(37, 99, 235, 0.08);
    color: var(--security-blue-light);
}

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

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* === CTA Section === */
.cta-section {
    text-align: center;
    padding: 80px 0;
    position: relative;
    background: radial-gradient(ellipse 60% 60% at 50% 50%, rgba(23,195,178,0.1) 0%, transparent 60%),
                radial-gradient(ellipse 50% 50% at 30% 40%, rgba(245,158,11,0.06) 0%, transparent 50%);
}

.cta-section h2 {
    margin-bottom: 16px;
    font-size: 2rem;
}

.cta-section p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 550px;
    margin: 0 auto 32px;
}

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

/* === Page Hero (Inner Pages) === */
.page-hero {
    padding: 120px 0 60px;
    text-align: center;
    position: relative;
    background: radial-gradient(ellipse 60% 50% at 50% 30%, rgba(23,195,178,0.06) 0%, transparent 60%);
}

.page-hero h1 {
    margin-bottom: 16px;
}

.page-hero p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 650px;
    margin: 0 auto;
}

/* === About Page === */
.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}

.about-intro img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.about-text h2 {
    margin-bottom: 16px;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.8;
}

.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--gate-teal), var(--compliance-gold), var(--security-blue));
}

.timeline-item {
    position: relative;
    margin-bottom: 36px;
    padding-bottom: 8px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -36px;
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--gate-teal);
    border: 3px solid var(--bg-dark);
    box-shadow: 0 0 0 3px rgba(23, 195, 178, 0.3);
}

.timeline-item:nth-child(even)::before {
    background: var(--compliance-gold);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.3);
}

.timeline-year {
    font-size: 0.85rem;
    color: var(--gate-teal);
    font-weight: 700;
    margin-bottom: 4px;
}

.timeline-item:nth-child(even) .timeline-year {
    color: var(--compliance-gold);
}

.timeline-item h3 {
    font-size: 1.05rem;
    margin-bottom: 6px;
}

.timeline-item p {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

/* Security badges */
.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.security-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 28px 22px;
    text-align: center;
    transition: all var(--transition);
}

.security-card:hover {
    border-color: var(--security-blue);
    box-shadow: 0 0 20px rgba(37, 99, 235, 0.12);
    transform: translateY(-4px);
}

.security-card .sec-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.security-card h3 {
    font-size: 1.05rem;
    margin-bottom: 8px;
}

.security-card p {
    color: var(--text-secondary);
    font-size: 0.88rem;
}

/* Team grid */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 28px;
}

.team-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 28px 20px;
    text-align: center;
    transition: all var(--transition);
}

.team-card:hover {
    border-color: var(--gate-teal);
    transform: translateY(-4px);
    box-shadow: var(--shadow-teal);
}

.team-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin: 0 auto 16px;
    border: 3px solid var(--gate-teal);
}

.team-card h3 {
    font-size: 1.05rem;
    margin-bottom: 4px;
}

.team-role {
    color: var(--gate-teal);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 8px;
}

.team-card p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* === Services Page === */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 28px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.service-card:hover {
    border-color: var(--gate-teal);
    box-shadow: var(--shadow-teal);
    transform: translateY(-4px);
}

.service-card .service-icon {
    font-size: 2.4rem;
}

.service-card h3 {
    font-size: 1.2rem;
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.94rem;
    line-height: 1.7;
    flex: 1;
}

.service-card .service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.service-tag {
    font-size: 0.78rem;
    padding: 4px 12px;
    background: rgba(23, 195, 178, 0.08);
    color: var(--gate-teal);
    border-radius: 20px;
    border: 1px solid rgba(23, 195, 178, 0.15);
}

/* Services Table */
.services-table-wrap {
    overflow-x: auto;
    margin-top: 40px;
}

.services-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.94rem;
}

.services-table thead th {
    background: var(--bg-card);
    padding: 14px 18px;
    text-align: left;
    border-bottom: 2px solid var(--border-color);
    color: var(--gate-teal);
    font-weight: 600;
}

.services-table tbody td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.services-table tbody tr:hover td {
    background: rgba(23, 195, 178, 0.03);
    color: var(--text-primary);
}

/* === FAQ Page === */
.faq-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-bottom: 40px;
}

.faq-filter-btn {
    padding: 8px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 50px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition);
}

.faq-filter-btn:hover,
.faq-filter-btn.active {
    background: rgba(23, 195, 178, 0.12);
    border-color: var(--gate-teal);
    color: var(--gate-teal);
}

.faq-search {
    max-width: 500px;
    margin: 0 auto 40px;
}

.faq-search input {
    width: 100%;
    padding: 14px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-primary);
    font-size: 0.95rem;
    outline: none;
    transition: border-color var(--transition);
}

.faq-search input:focus {
    border-color: var(--gate-teal);
    box-shadow: 0 0 0 3px rgba(23, 195, 178, 0.1);
}

.faq-group {
    margin-bottom: 32px;
}

.faq-group h2 {
    font-size: 1.3rem;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
    position: relative;
}

.faq-group h2::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: var(--gate-teal);
}

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

.faq-item:hover {
    border-color: var(--gate-teal);
}

.faq-item summary {
    padding: 18px 48px 18px 22px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    position: relative;
    list-style: none;
    user-select: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.4rem;
    font-weight: 300;
    color: var(--gate-teal);
    transition: transform 0.3s ease;
}

.faq-item[open] summary::after {
    content: '−';
    transform: translateY(-50%) rotate(180deg);
}

.faq-item .faq-answer {
    padding: 0 22px 18px;
    color: var(--text-secondary);
    font-size: 0.94rem;
    line-height: 1.8;
}

/* === Contact Page === */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 36px;
}

.contact-form h2 {
    font-size: 1.4rem;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.94rem;
    font-family: inherit;
    outline: none;
    transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--gate-teal);
    box-shadow: 0 0 0 3px rgba(23, 195, 178, 0.08);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.contact-info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    transition: all var(--transition);
}

.contact-info-card:hover {
    border-color: var(--gate-teal);
    box-shadow: var(--shadow-teal);
}

.contact-info-card h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.contact-info-card p {
    color: var(--text-secondary);
    font-size: 0.94rem;
    line-height: 1.7;
}

.social-links {
    display: flex;
    gap: 16px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-secondary);
    font-size: 0.88rem;
    transition: all var(--transition);
}

.social-link:hover {
    border-color: var(--gate-teal);
    color: var(--gate-teal);
    background: rgba(23, 195, 178, 0.06);
}

/* === Footer === */
.site-footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: 48px 0 28px;
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
    margin-bottom: 24px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--gate-teal);
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* === Animations === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes btn-pulse {
    0%, 100% {
        box-shadow: 0 4px 20px rgba(23, 195, 178, 0.3);
    }
    50% {
        box-shadow: 0 6px 35px rgba(23, 195, 178, 0.55);
    }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.fade-in-up {
    animation: fadeInUp 0.7s ease forwards;
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* === Responsive === */
@media (max-width: 968px) {
    .about-intro {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .features-grid,
    .services-grid {
        grid-template-columns: 1fr;
    }

    .stats-bar {
        gap: 24px;
    }

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

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--bg-nav);
        backdrop-filter: blur(12px);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid var(--border-color);
        display: none;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding: 100px 0 50px;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section {
        padding: 50px 0;
    }

    .section-header {
        margin-bottom: 36px;
    }

    .page-hero {
        padding: 100px 0 40px;
    }

    .page-hero h1 {
        font-size: 1.6rem;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .btn-large {
        padding: 14px 32px;
        font-size: 1rem;
    }

    .contact-form {
        padding: 24px;
    }

    .services-table-wrap {
        font-size: 0.82rem;
    }

    .services-table thead th,
    .services-table tbody td {
        padding: 10px 12px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-tags {
        gap: 8px;
    }

    .hero-tag {
        padding: 6px 14px;
        font-size: 0.8rem;
    }

    .timeline {
        padding-left: 30px;
    }

    .timeline-item::before {
        left: -26px;
        width: 10px;
        height: 10px;
    }

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