/* ===== ChipaiEdu Brand Styles ===== */
:root {
    --primary: #0d4580;
    --primary-dark: #003060;
    --secondary: #1a5c99;
    --secondary-light: #4278b0;
    --accent: #1b89b5;
    --accent-light: #48a5c8;
    --accent-dark: #0f6d90;
    --bg: #f8fafc;
    --bg-alt: #f1f5f9;
    --white: #ffffff;
    --text: #1e293b;
    --text-muted: #475569;
    --text-light: #94a3b8;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 32px rgba(13,69,128,0.15);
    --shadow-xl: 0 16px 48px rgba(13,69,128,0.2);
    --radius: 16px;
    --radius-sm: 8px;
    --radius-lg: 24px;
    --header-h: 72px;
    --max-width: 1200px;
    --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--secondary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
h1, h2, h3, h4, h5, h6 { color: var(--primary); line-height: 1.3; }
h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.25rem; }

/* ===== Header ===== */
.header {
    background: var(--primary);
    color: var(--white);
    position: sticky; top: 0; z-index: 100;
    box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}
.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
    height: var(--header-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--white);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 1px;
}
.logo img { height: 40px; width: auto; background: #fff; border-radius: 4px; padding: 2px; }
.nav { display: flex; gap: 4px; }
.nav a {
    color: rgba(255,255,255,0.85);
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.95rem;
    transition: all 0.2s;
}
.nav a:hover,
.nav a.active { color: var(--accent); background: rgba(255,255,255,0.1); }

/* Mobile menu */
.menu-toggle {
    display: none;
    background: none; border: none; color: var(--white);
    font-size: 1.5rem; cursor: pointer; padding: 8px;
}
@media (max-width: 768px) {
    .menu-toggle { display: block; }
    .nav {
        display: none;
        position: absolute; top: var(--header-h); left: 0; right: 0;
        background: var(--primary);
        flex-direction: column;
        padding: 12px 20px;
        gap: 0;
        box-shadow: var(--shadow-lg);
    }
    .nav.open { display: flex; }
    .nav a { padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,0.1); border-radius: 0; }
}

/* ===== Hero ===== */
.hero {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 30%, var(--secondary) 70%, var(--accent) 100%);
    color: var(--white);
    text-align: center;
    padding: 120px 20px 100px;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(62,128,149,0.15), transparent 50%),
        radial-gradient(circle at 80% 30%, rgba(94,111,186,0.12), transparent 40%),
        radial-gradient(circle at 40% 80%, rgba(62,128,149,0.1), transparent 45%);
    animation: pulse-glow 8s ease-in-out infinite;
}
@keyframes pulse-glow {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}
.hero::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    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='%23ffffff' 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");
    animation: rotate 120s linear infinite;
}
@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
.hero-content { position: relative; z-index: 2; max-width: 900px; margin: 0 auto; }
.hero h1 { 
    color: var(--white); 
    font-size: 3.5rem; 
    margin-bottom: 24px; 
    letter-spacing: 2px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.3);
    animation: fadeInUp 0.8s ease-out;
}
.hero p { 
    font-size: 1.35rem; 
    opacity: 0.95; 
    margin-bottom: 48px; 
    line-height: 1.9;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}
.hero-buttons { 
    display: flex; 
    gap: 20px; 
    justify-content: center; 
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.btn {
    display: inline-block;
    padding: 14px 36px;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s var(--transition-smooth);
    border: none;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}
.btn:hover::before {
    left: 100%;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    box-shadow: 0 4px 16px rgba(61,72,146,0.3);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(61,72,146,0.4);
}
.btn-primary:active {
    transform: translateY(0);
}
.btn-primary:disabled {
    background: #94a3b8;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}
.btn-primary:disabled:hover {
    transform: none;
    box-shadow: none;
}
.btn-outline {
    background: rgba(255,255,255,0.15);
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.4);
    backdrop-filter: blur(10px);
}
.btn-outline:hover {
    background: rgba(255,255,255,0.25);
    border-color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}
.btn-sm {
    padding: 10px 24px;
    font-size: 0.9rem;
}

/* ===== Sections ===== */
.section {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 80px 20px;
}
.section-title {
    text-align: center;
    margin-bottom: 16px;
    color: var(--primary);
}
.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 48px;
    font-size: 1.05rem;
}
.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    margin: 16px auto 0;
    border-radius: 2px;
}

/* ===== Cards Grid ===== */
.cards { display: grid; gap: 32px; }
.cards-3 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.cards-4 { grid-template-columns: repeat(4, 1fr); }
.card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 28px;
    text-align: center;
    transition: all 0.4s var(--transition-smooth);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: opacity 0.3s;
}
.card:hover::before {
    opacity: 1;
}
.card:hover { 
    transform: translateY(-8px); 
    box-shadow: var(--shadow-xl); 
    border-color: var(--secondary-light);
}
.card-icon {
    width: 64px; height: 64px;
    border-radius: var(--radius);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.8rem;
    margin: 0 auto 24px;
    color: var(--white);
    position: relative;
    transition: transform 0.3s var(--transition-bounce);
}
.card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
}
.card-icon.blue { background: linear-gradient(135deg, var(--primary), var(--secondary)); }
.card-icon.teal { background: linear-gradient(135deg, var(--primary), var(--accent)); }
.card-icon.cyan { background: linear-gradient(135deg, var(--secondary), var(--accent)); }
.card h3 { margin-bottom: 16px; color: var(--primary); font-size: 1.3rem; }
.card p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.8; }

/* ===== Team Cards ===== */
.team-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.team-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 28px;
    text-align: center;
    transition: all 0.3s;
}
.team-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.team-avatar {
    width: 160px; height: 160px;
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
}
.team-photo {
    width: 100%; height: 100%;
    object-fit: cover;
    border-radius: 50%;
}
.team-card h3 { margin-bottom: 6px; }
.team-role { color: var(--secondary); font-weight: 600; font-size: 0.9rem; margin-bottom: 8px; }
.team-desc { color: var(--text-muted); font-size: 0.9rem; }

/* ===== Service List ===== */
.services { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.service-item {
    background: var(--white);
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 24px 20px;
    box-shadow: var(--shadow);
}
.service-item:nth-child(2) { border-left-color: var(--secondary); }
.service-item:nth-child(3) { border-left-color: var(--accent); }
.service-item:nth-child(4) { border-left-color: var(--accent); }
.service-item h4 { margin-bottom: 12px; font-size: 1.05rem; }
.service-item li { color: var(--text-muted); font-size: 0.9rem; padding: 4px 0; }
.service-item li::before { content: "\25B8"; color: var(--secondary); margin-right: 8px; }

/* ===== CTA Banner ===== */
.cta {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    text-align: center;
    padding: 60px 20px;
    border-radius: var(--radius);
    margin: 0 20px 60px;
    max-width: var(--max-width);
    margin-left: auto; margin-right: auto;
}
.cta h2 { color: var(--white); margin-bottom: 12px; }
.cta p { opacity: 0.85; margin-bottom: 24px; }

/* ===== Content Block ===== */
.content-block {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 60px 20px;
}
.content-block h2 { margin: 40px 0 20px; padding-bottom: 8px; }
.content-block h2:first-child { margin-top: 0; }
.content-block p { color: var(--text-muted); font-size: 1rem; line-height: 1.9; margin-bottom: 16px; }
.content-block .intro-box {
    background: var(--bg);
    border-radius: var(--radius);
    padding: 32px;
    margin-bottom: 40px;
}

/* ===== Page Header ===== */
.page-header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    text-align: center;
    padding: 80px 20px 60px;
}
.page-header h1 { color: var(--white); margin-bottom: 12px; }
.page-header p { opacity: 0.85; font-size: 1.1rem; }

/* ===== Contact Page ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 48px;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 50px 20px;
    align-items: start;
}
@media (max-width: 768px) { .contact-grid { grid-template-columns: 1fr; gap: 32px; padding: 40px 16px; } }

.contact-info-box {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}
.contact-item {
    display: flex;
    gap: 16px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-light);
}
.contact-item:last-child { border-bottom: none; }
.contact-item .icon {
    width: 48px; height: 48px;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    border-radius: 12px;
    font-size: 1.5rem;
    flex-shrink: 0;
}
.contact-item label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 4px;
    font-weight: 600;
}
.contact-item span {
    color: var(--text);
    line-height: 1.6;
    font-size: 1rem;
}

.social-icons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 8px;
}
.social-icon-wrap { position: relative; }
.social-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    background: var(--bg-alt);
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}
.social-logo svg, .social-logo img { width: 22px; height: 22px; }
.social-logo:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }

.social-qr {
    display: none;
    position: absolute;
    bottom: calc(100% + 14px);
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.18);
    padding: 6px;
    width: 160px;
}
.social-qr::after {
    content: '';
    position: absolute;
    top: 100%; left: 50%;
    transform: translateX(-50%);
    border: 8px solid transparent;
    border-top-color: var(--white);
}
.social-qr img {
    display: block;
    width: 100%;
    border-radius: 8px;
}
.social-icon-wrap:hover .social-qr,
.social-icon-wrap:focus-within .social-qr {
    display: block;
}

/* ===== Contact Form ===== */
#contact-form {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
}

/* ===== Form ===== */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 600; color: var(--text); font-size: 0.9rem; }
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: all 0.3s var(--transition-smooth);
    background: var(--white);
    color: var(--text);
    font-family: inherit;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(42, 74, 122, 0.1);
}
.form-group input:hover,
.form-group textarea:hover,
.form-group select:hover {
    border-color: var(--secondary-light);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-group .error { color: #dc2626; font-size: 0.85rem; margin-top: 8px; display: none; line-height: 1.4; font-weight: 500; }
.form-group .error::before { content: '⚠ '; }

/* ===== News List ===== */
.news-list { display: grid; gap: 20px; }
.news-item {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: all 0.3s;
}
.news-item:hover { box-shadow: var(--shadow-lg); }
.news-item h3 { margin-bottom: 8px; }
.news-item .meta { color: var(--text-light); font-size: 0.85rem; margin-bottom: 12px; }
.news-item p { color: var(--text-muted); font-size: 0.95rem; }

.news-loading, .news-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
    font-size: 1rem;
}

/* ===== Filters ===== */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 32px; }
.filter-tag {
    padding: 6px 18px;
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 0.9rem;
    cursor: pointer;
    background: var(--white);
    transition: all 0.2s;
    color: var(--text-muted);
}
.filter-tag:hover,
.filter-tag.active { background: var(--primary); color: var(--white); border-color: var(--primary); }

/* ===== Footer ===== */
.footer {
    background: #111827;
    color: #9ca3af;
    text-align: center;
    padding: 32px 20px;
    font-size: 0.9rem;
}
.footer a { color: var(--accent); }
.footer a:hover { color: var(--white); }
.icp-filing { margin-top: 8px; font-size: 0.85rem; }
.icp-filings { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 16px; margin-top: 8px; font-size: 0.85rem; }
.icp-filing { margin-top: 0; }
.icp-filing a { color: #9ca3af; text-decoration: none; display: inline-flex; align-items: center; gap: 4px; }
.icp-filing a:hover { color: var(--accent); }
.icp-icon { vertical-align: middle; flex-shrink: 0; }
.gongan-icon {
    vertical-align: middle;
    flex-shrink: 0;
    width: 16px;
    height: 16px;
    object-fit: contain;
}

/* ===== 404 ===== */
.error-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - var(--header-h) - 100px);
    text-align: center;
    padding: 40px 20px;
}
.error-page h1 { font-size: 6rem; color: var(--primary); margin-bottom: 8px; }
.error-page p { color: var(--text-muted); font-size: 1.1rem; margin-bottom: 32px; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.5rem; }
    .hero { padding: 70px 16px; }
    .hero h1 { font-size: 2rem; }
    .hero p { font-size: 1rem; }
    .section { padding: 50px 16px; }
    .content-block { padding: 40px 16px; }
    .page-header { padding: 60px 16px 40px; }
    .cta { margin: 0 16px 40px; padding: 40px 16px; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.6rem; }
    .cards-3, .cards-4, .team-cards, .services { grid-template-columns: 1fr; }
}

/* ===== Hero Stats Bar ===== */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 60px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.6s backwards;
}
.hero-stat-item {
    text-align: center;
    min-width: 140px;
    padding: 20px;
    background: rgba(255,255,255,0.08);
    border-radius: var(--radius);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.15);
    transition: all 0.3s var(--transition-smooth);
}
.hero-stat-item:hover {
    background: rgba(255,255,255,0.12);
    border-color: rgba(255,255,255,0.25);
    transform: translateY(-4px);
}
.hero-stat-num {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent);
    line-height: 1.2;
    text-shadow: 0 2px 10px rgba(62,128,149,0.3);
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-stat-label {
    font-size: 0.9rem;
    opacity: 0.85;
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* ===== Pathway (课程成长路径) ===== */
.pathway {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 100px 20px;
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%);
}
.pathway-title {
    text-align: center;
    margin-bottom: 20px;
    color: var(--primary);
    font-size: 2.2rem;
    font-weight: 700;
}
.pathway-subtitle {
    text-align: center;
    color: var(--text-muted);
    max-width: 900px;
    margin: 0 auto 60px;
    font-size: 1.1rem;
    line-height: 1.8;
}
.pathway-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    position: relative;
}
.pathway-steps::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 12.5%;
    right: 12.5%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    z-index: 0;
    opacity: 0.3;
    border-radius: 2px;
}
.pathway-step {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 48px 24px 36px;
    text-align: center;
    position: relative;
    z-index: 1;
    transition: all 0.4s var(--transition-smooth);
    box-shadow: var(--shadow);
}
.pathway-step:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-xl);
    border-color: var(--secondary-light);
}
.pathway-step-icon {
    width: 80px; height: 80px;
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem;
    color: var(--white);
    position: relative;
    transition: all 0.4s var(--transition-bounce);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.pathway-step:hover .pathway-step-icon {
    transform: scale(1.15) rotate(8deg);
    box-shadow: 0 8px 24px rgba(61,72,146,0.25);
}
.pathway-step:nth-child(1) .pathway-step-icon { background: linear-gradient(135deg, var(--primary), var(--secondary)); }
.pathway-step:nth-child(2) .pathway-step-icon { background: linear-gradient(135deg, var(--secondary), var(--accent)); }
.pathway-step:nth-child(3) .pathway-step-icon { background: linear-gradient(135deg, var(--accent), var(--accent-light)); }
.pathway-step:nth-child(4) .pathway-step-icon { background: linear-gradient(135deg, var(--accent-light), var(--accent-dark)); }
.pathway-step h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--primary);
    font-weight: 600;
}
.pathway-step p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.8;
    min-height: 72px;
}
.pathway-step-num {
    position: absolute;
    top: -18px;
    left: 50%;
    transform: translateX(-50%);
    width: 36px; height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    font-size: 0.95rem;
    font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    z-index: 2;
    box-shadow: 0 2px 8px rgba(61,72,146,0.3);
    border: 3px solid var(--white);
}

/* ===== Service Cards (服务图文卡片) ===== */
.service-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}
.service-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    transition: all 0.4s var(--transition-smooth);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s var(--transition-smooth);
}
.service-card:nth-child(2)::before { background: linear-gradient(90deg, var(--secondary), var(--accent)); }
.service-card:nth-child(3)::before { background: linear-gradient(90deg, var(--accent), var(--accent-light)); }
.service-card:nth-child(4)::before { background: linear-gradient(90deg, var(--accent-light), var(--accent-dark)); }
.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}
.service-card:hover::before {
    transform: scaleX(1);
}
.service-card-icon {
    font-size: 2.4rem;
    margin-bottom: 20px;
    display: inline-block;
    transition: transform 0.4s var(--transition-bounce);
}
.service-card:hover .service-card-icon {
    transform: scale(1.2) rotate(8deg);
}
.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--primary);
    font-weight: 600;
}
.service-card .service-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}
.service-tag {
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    background: rgba(61,72,146,0.08);
    color: var(--primary);
    transition: all 0.3s;
}
.service-card:hover .service-tag {
    background: rgba(61,72,146,0.12);
}
.service-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 20px;
    min-height: 90px;
}
.service-card-link {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--secondary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: all 0.3s;
}
.service-card-link:hover { 
    color: var(--primary); 
    gap: 8px;
}

/* ===== Partners (合作案例 Logo 墙) ===== */
.partners {
    padding: 80px 0;
    background: var(--white);
    overflow: hidden;
}
.partners-title {
    text-align: center;
    margin-bottom: 16px;
    color: var(--primary);
    font-size: 2rem;
}
.partners-subtitle {
    text-align: center;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 48px;
    font-size: 1.05rem;
}
.partner-track-wrap {
    overflow: hidden;
    margin-bottom: 20px;
}
.partner-track {
    display: flex;
    gap: 20px;
    width: max-content;
}
.partner-track.scroll-left {
    animation: scroll-left 30s linear infinite;
}
.partner-track.scroll-right {
    animation: scroll-right 35s linear infinite;
}
.partner-logo {
    min-width: 160px;
    height: 80px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-muted);
    transition: all 0.3s;
    padding: 0 16px;
}
.partner-logo:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(61,72,146,0.03);
}

@keyframes scroll-left {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}
@keyframes scroll-right {
    0% { transform: translateX(-50%); }
    100% { transform: translateX(0); }
}

/* ===== Credentials (企业资质) ===== */
.credentials {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 80px 20px;
}
.credential-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}
.credential-item {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    transition: all 0.3s;
}
.credential-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}
.credential-icon {
    font-size: 2.2rem;
    margin-bottom: 12px;
}
.credential-item h3 {
    font-size: 1.05rem;
    margin-bottom: 6px;
    color: var(--primary);
}
.credential-item p {
    color: var(--text-muted);
    font-size: 0.88rem;
    line-height: 1.5;
}

/* ===== News Preview (新闻动态预览) ===== */
.news-preview {
    padding: 80px 0;
    background: var(--bg);
}
.news-preview-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}
.news-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 36px;
}
.news-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.3s;
}
.news-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}
.news-card-img {
    width: 100%;
    height: 180px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: rgba(255,255,255,0.3);
}
.news-card-body {
    padding: 20px 24px;
}
.news-card-date {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 8px;
}
.news-card h3 {
    font-size: 1.05rem;
    margin-bottom: 8px;
    color: var(--primary);
    line-height: 1.4;
}
.news-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
}
.news-preview-more {
    text-align: center;
}

/* ===== Footer Grid (Footer 三栏) ===== */
.footer-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 48px 20px 32px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
}
.footer-col h4 {
    color: var(--white);
    font-size: 1rem;
    margin-bottom: 16px;
}
.footer-col p,
.footer-col a,
.footer-col li {
    color: #9ca3af;
    font-size: 0.9rem;
    line-height: 1.8;
}
.footer-col a:hover { color: var(--accent); }
.footer-brand .logo-text {
    color: var(--white);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
}
.footer-brand p { line-height: 1.7; }
.footer-contact .contact-line {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 8px;
    color: #9ca3af;
}
.footer-contact .contact-icon {
    color: var(--accent);
    flex-shrink: 0;
    margin-top: 3px;
}
.footer-social {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 12px;
}
.footer-social .social-logo {
    background: rgba(255,255,255,0.1);
}
.footer-social .social-logo:hover {
    background: rgba(255,255,255,0.2);
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 16px 20px;
    text-align: center;
    font-size: 0.85rem;
    color: #6b7280;
}
.footer-bottom p {
    margin: 4px 0;
}
@media (max-width: 480px) {
    .footer-bottom { padding: 12px 8px; font-size: 0.75rem; }
    .icp-filings { gap: 12px; }
    .icp-filing { font-size: 0.75rem; }
}

/* ===== Responsive - New Sections ===== */
@media (max-width: 1024px) {
    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.8rem; }
    .hero { padding: 100px 16px 80px; }
    .hero h1 { font-size: 2.8rem; }
    .hero p { font-size: 1.15rem; }
    .section { padding: 70px 16px; }
    .content-block { padding: 50px 16px; }
    .page-header { padding: 70px 16px 50px; }
    .cta { margin: 0 16px 50px; padding: 50px 16px; }
    .pathway { padding: 80px 16px; }
    .pathway-steps { gap: 24px; }
    .pathway-step { padding: 40px 20px 32px; }
    .pathway-step-icon { width: 70px; height: 70px; font-size: 1.8rem; }
    .service-cards { gap: 24px; grid-template-columns: repeat(2, 1fr); }
    .cards-4 { grid-template-columns: repeat(2, 1fr); }
    .service-card { padding: 32px 24px; }
    .cards { gap: 24px; }
    .card { padding: 32px 24px; }
    .card-icon { width: 56px; height: 56px; font-size: 1.6rem; }
    .team-cards { gap: 24px; }
    .team-card { padding: 32px 24px; }
    .team-avatar { width: 120px; height: 120px; }
}

@media (max-width: 768px) {
    h1 { font-size: 1.9rem; }
    h2 { font-size: 1.6rem; }
    h3 { font-size: 1.1rem; }
    .hero { 
        padding: 80px 16px 60px;
        text-align: center;
    }
    .hero h1 { font-size: 2.2rem; letter-spacing: 1px; }
    .hero p { font-size: 1.05rem; line-height: 1.8; }
    .hero-buttons { gap: 12px; }
    .hero-stats { 
        gap: 16px; 
        margin-top: 40px;
    }
    .hero-stat-item { 
        min-width: 100px; 
        padding: 16px 12px;
    }
    .hero-stat-num { font-size: 2rem; }
    .hero-stat-label { font-size: 0.8rem; }
    .section { padding: 60px 16px; }
    .content-block { padding: 40px 16px; }
    .page-header { padding: 60px 16px 40px; }
    .cta { margin: 0 16px 40px; padding: 40px 16px; }
    .cards-3, .cards-4, .team-cards, .services { grid-template-columns: 1fr; }
    .card { padding: 28px 20px; }
    .service-cards { grid-template-columns: 1fr; }
    .service-card { padding: 28px 20px; }
    .pathway { padding: 60px 16px; }
    .pathway-steps {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .pathway-steps::before { display: none; }
    .pathway-step { padding: 32px 20px 24px; text-align: center; }
    .pathway-step-icon { width: 64px; height: 64px; font-size: 1.6rem; }
    .pathway-step-num { display: none; }
    .partners { padding: 60px 0; }
    .news-preview-grid { grid-template-columns: 1fr; }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }
    .footer-contact .contact-line {
        justify-content: center;
    }
    .credentials { padding: 60px 16px; }
    .credential-grid { grid-template-columns: 1fr; }
    .partner-logo { min-width: 120px; height: 60px; font-size: 0.8rem; }
    .filter-bar { gap: 8px; }
    .filter-tag { padding: 6px 14px; font-size: 0.85rem; }
    .contact-grid { grid-template-columns: 1fr; gap: 32px; }
    .news-list { gap: 16px; }
    .news-item { padding: 20px; }
}

@media (max-width: 480px) {
    h1 { font-size: 1.7rem; }
    h2 { font-size: 1.4rem; }
    .hero { padding: 60px 12px 40px; }
    .hero h1 { font-size: 1.9rem; }
    .hero p { font-size: 0.95rem; }
    .hero-buttons { flex-direction: column; width: 100%; }
    .hero-buttons .btn { width: 100%; padding: 12px 24px; }
    .hero-stats { gap: 12px; }
    .hero-stat-item { min-width: 80px; padding: 12px 8px; }
    .hero-stat-num { font-size: 1.6rem; }
    .hero-stat-label { font-size: 0.75rem; }
    .section { padding: 50px 12px; }
    .content-block { padding: 32px 12px; }
    .page-header { padding: 50px 12px 30px; }
    .cta { margin: 0 12px 30px; padding: 32px 12px; }
    .pathway { padding: 50px 12px; }
    .service-card { padding: 24px 16px; }
    .card { padding: 24px 16px; }
    .team-card { padding: 28px 16px; }
    .service-card h3 { font-size: 1.15rem; }
    .card h3 { font-size: 1.2rem; }
    .pathway-step h3 { font-size: 1.1rem; }
    .partners { padding: 50px 0; }
    .partner-logo { min-width: 100px; height: 50px; font-size: 0.75rem; padding: 0 12px; }
    .footer-grid { padding: 32px 12px 24px; gap: 24px; }
    .footer-bottom { padding: 12px 12px; font-size: 0.8rem; }
    .filter-tag { padding: 5px 12px; font-size: 0.8rem; }
    .btn { padding: 12px 28px; font-size: 0.95rem; }
    .btn-sm { padding: 8px 20px; font-size: 0.85rem; }
    .menu-toggle { padding: 12px; font-size: 1.3rem; }
    .nav a { padding: 16px 0; font-size: 1rem; }
    .form-group input, .form-group textarea, .form-group select { padding: 14px 16px; font-size: 16px; }
}

/* ===== Scroll Animations ===== */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s var(--transition-smooth);
}
.scroll-animate.visible {
    opacity: 1;
    transform: translateY(0);
}
.scroll-animate-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.8s var(--transition-smooth);
}
.scroll-animate-left.visible {
    opacity: 1;
    transform: translateX(0);
}
.scroll-animate-right {
    opacity: 0;
    transform: translateX(30px);
    transition: all 0.8s var(--transition-smooth);
}
.scroll-animate-right.visible {
    opacity: 1;
    transform: translateX(0);
}
.scroll-animate-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.8s var(--transition-smooth);
}
.scroll-animate-scale.visible {
    opacity: 1;
    transform: scale(1);
}

/* ===== Additional Layout Improvements ===== */
.section-title {
    text-align: center;
    margin-bottom: 20px;
    color: var(--primary);
    font-size: 2.2rem;
    font-weight: 700;
    position: relative;
}
.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 56px;
    font-size: 1.1rem;
    line-height: 1.8;
}

/* ===== Content Block Improvements ===== */
.content-block {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 80px 20px;
}
.content-block h2 { 
    margin: 48px 0 24px; 
    padding-bottom: 12px;
    font-size: 1.8rem;
    font-weight: 600;
}
.content-block h2:first-child { margin-top: 0; }
.content-block p { 
    color: var(--text-muted); 
    font-size: 1.05rem; 
    line-height: 2; 
    margin-bottom: 20px; 
}
.content-block .intro-box {
    background: linear-gradient(135deg, var(--bg), var(--bg-alt));
    border-radius: var(--radius-lg);
    padding: 40px;
    margin-bottom: 48px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow);
}

/* ===== Page Header Improvements ===== */
.page-header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    text-align: center;
    padding: 100px 20px 80px;
    position: relative;
    overflow: hidden;
}
.page-header::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(62,128,149,0.1), transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(94,111,186,0.08), transparent 50%);
}
.page-header h1 { 
    color: var(--white); 
    margin-bottom: 16px;
    font-size: 2.5rem;
    font-weight: 700;
    position: relative;
    z-index: 1;
}
.page-header p { 
    opacity: 0.9; 
    font-size: 1.15rem;
    position: relative;
    z-index: 1;
}

/* ===== News Detail Modal ===== */
.news-detail-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 9999;
    padding: 2rem;
    overflow-y: auto;
}
.news-detail-overlay.active {
    display: flex;
    align-items: flex-start;
    justify-content: center;
}
.news-detail-modal {
    background: #fff;
    border-radius: 8px;
    max-width: 800px;
    width: 100%;
    padding: 2rem 2.5rem;
    position: relative;
    margin-top: 2rem;
    box-shadow: 0 8px 40px rgba(0,0,0,0.2);
}
.news-detail-close {
    position: absolute;
    top: 1rem;
    right: 1.2rem;
    font-size: 1.5rem;
    cursor: pointer;
    border: none;
    background: none;
    color: #666;
    line-height: 1;
}
.news-detail-close:hover { color: #000; }
.news-detail-modal h2 {
    margin-top: 0;
    font-size: 1.5rem;
    color: var(--primary);
    padding-right: 2rem;
}
.news-detail-modal .news-meta {
    color: #888;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}
.news-detail-modal .news-body {
    line-height: 1.8;
    color: #333;
}
.news-detail-modal .news-body img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    margin: 1rem 0;
}
.news-item { cursor: pointer; }
.news-item:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.08); }

/* ===== 原点大厦（关于我们页） ===== */
.building-photo {
    margin: 0 auto 40px;
    max-width: 1000px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}
.building-photo img {
    width: 100%;
    height: auto;
    display: block;
}

/* ===== 原点论坛视频 ===== */
.video-wrap {
    max-width: 960px;
    margin: 0 auto 60px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background: #000;
}
.video-wrap video {
    width: 100%;
    height: auto;
    display: block;
}
.service-item .meta {
    color: var(--text-light);
    font-size: 0.85rem;
    margin-bottom: 12px;
}