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

body {
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: #f9fafc;
    color: #1e293b;
    line-height: 1.5;
    scroll-behavior: smooth;
}

/* ���޿�����ɫ��ɫ��: ������ (#2D6AFF) + ���� (#10B981) + ���� (#F97316) */
:root {
    --primary-blue: #2D6AFF;
    --primary-blue-dark: #1e4bd2;
    --accent-green: #10B981;
    --accent-orange: #F97316;
    --bg-light: #F8FAFE;
    --card-white: #FFFFFF;
    --text-dark: #0F172A;
    --text-muted: #475569;
    --border-light: #E9EEF3;
    --shadow-sm: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
    --shadow-md: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.01);
}

/* Navbar 覆盖 — 白色背景 + 深色文字 */
.navbar {
    /* background: #fff !important;
    border-bottom: 1px solid rgba(0,0,0,.06);
    box-shadow: 0 1px 12px rgba(0,0,0,.04); */
    border-bottom: 1px solid transparent;
    position: fixed !important;
    top: 0;
    z-index: 1030;
}
.navbar .nav-link,
.navbar .dropdown-toggle,
.navbar .navbar-brand {
    color: rgba(0,0,0,.95) !important;
}
.navbar .nav-link:hover,
.navbar .dropdown-toggle:hover {
    color: rgba(0,0,0,.95) !important;
    background: rgba(0,0,0,.04);
}
.navbar .nav-link.active,
.navbar .dropdown-toggle.active {
    color: rgba(0,0,0,.95) !important;
}
.navbar.scrolled {
    background: #fff !important;
    box-shadow: 0 1px 12px rgba(0,0,0,.04);
    border-bottom-color: rgba(0,0,0,.06);
}
.navbar.scrolled .nav-link,
.navbar.scrolled .dropdown-toggle {
    color: rgba(0,0,0,.95) !important;
}
.navbar.scrolled .nav-link:hover,
.navbar.scrolled .dropdown-toggle:hover {
    color: rgba(0,0,0,.95) !important;
    background: rgba(0,0,0,.04);
}
.navbar.scrolled .nav-link.active {
    color: rgba(0,0,0,.95) !important;
}
.navbar .btn-outline-light-nav {
    border-color: rgba(0,0,0,.15);
    color: rgba(0,0,0,.85);
}
.navbar .btn-outline-light-nav:hover {
    border-color: rgba(0,0,0,.3);
    background: rgba(0,0,0,.04);
    color: rgba(0,0,0,.95);
}
.navbar.scrolled .btn-outline-light-nav {
    border-color: rgba(0,0,0,.15);
    color: rgba(0,0,0,.85);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}


.nav-flex {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-green) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -0.3px;
}

    .logo span {
        background: none;
        color: var(--primary-blue);
        font-weight: 700;
    }

.nav-links {
    display: flex;
    gap: 32px;
    font-weight: 500;
}

    .nav-links a {
        text-decoration: none;
        color: var(--text-dark);
        transition: color 0.2s;
    }

        .nav-links a:hover {
            color: var(--primary-blue);
        }

        .nav-links a.active {
            color: var(--primary-blue);
            font-weight: 700;
        }

.btn-primary {
    background: var(--primary-blue);
    color: white;
    padding: 10px 24px;
    border-radius: 40px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 2px 6px rgba(45,106,255,0.2);
}

    .btn-primary:hover {
        background: var(--primary-blue-dark);
        transform: translateY(-1px);
    }

.btn-outline {
    border: 1.5px solid var(--primary-blue);
    background: transparent;
    color: var(--primary-blue);
    padding: 8px 22px;
    border-radius: 40px;
    font-weight: 600;
    transition: 0.2s;
}

    .btn-outline:hover {
        background: var(--primary-blue);
        color: white;
    }

/* Hero ���� */
.hero {
    padding: 64px 0 48px;
    background: linear-gradient(145deg, #F0F5FF 0%, #FFFFFF 100%);
}

.hero-grid {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 40px;
    justify-content: space-between;
}

.hero-content {
    flex: 1;
}

.hero-badge {
    background: #E6F0FF;
    color: var(--primary-blue);
    display: inline-block;
    border-radius: 100px;
    padding: 6px 14px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    background: linear-gradient(to right, #0F2B5E, var(--primary-blue));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 20px;
}

.hero .btn-primary {
    padding: 22px 70px;
    font-size: 1.41rem;
    margin-top: 8px;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 540px;
}

.hero-stats {
    display: flex;
    gap: 32px;
    margin-top: 20px;
}

.stat-item h3 {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary-blue);
}

.stat-item p {
    font-size: 0.9rem;
    margin: 0;
}

.hero-image {
    flex: 1;
    background: #fff;
    border-radius: 32px;
    box-shadow: var(--shadow-md);
    padding: 20px;
    text-align: center;
}

    .hero-image img {
        max-width: 100%;
        border-radius: 20px;
    }

/* Section ͨ�� */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.section-sub {
    text-align: center;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 56px auto;
    font-size: 1.1rem;
}

/* ��Ƭ���� */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--card-white);
    border-radius: 28px;
    padding: 32px 24px;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

    .feature-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 20px 30px -12px rgba(0,0,0,0.1);
    }

.feature-icon {
    font-size: 2.8rem;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
    font-weight: 700;
}

.feature-card p {
    color: var(--text-muted);
}

/* ���̲��� */
.steps {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    margin-top: 30px;
}

.step-item {
    background: white;
    border-radius: 40px;
    flex: 1;
    min-width: 200px;
    padding: 28px 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border-top: 5px solid var(--accent-orange);
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--accent-green);
    color: white;
    font-weight: bold;
    font-size: 1.5rem;
    border-radius: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.step-item h4 {
    font-size: 1.3rem;
    margin-bottom: 12px;
}

/* �Աȱ��� */
.compare-table-wrapper {
    overflow-x: auto;
    background: white;
    border-radius: 28px;
    box-shadow: var(--shadow-sm);
    margin-top: 20px;
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

    .compare-table th, .compare-table td {
        padding: 16px 20px;
        text-align: left;
        border-bottom: 1px solid var(--border-light);
    }

    .compare-table th {
        background: #F1F5F9;
        font-weight: 700;
        color: var(--text-dark);
    }

    .compare-table tr:last-child td {
        border-bottom: none;
    }

.badge-success {
    background: #DCFCE7;
    color: #15803D;
    padding: 4px 12px;
    border-radius: 40px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* �������� �ַ��� */
.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    margin-bottom: 16px;
    border-radius: 20px;
    border: 1px solid var(--border-light);
    overflow: hidden;
}

.faq-question {
    padding: 20px 28px;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    transition: 0.1s;
}

    .faq-question i {
        color: var(--primary-blue);
        transition: transform 0.2s;
    }

.faq-answer {
    padding: 0 28px 20px 28px;
    color: var(--text-muted);
    border-top: 1px solid var(--border-light);
    display: none;
    line-height: 1.6;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

/* CTA ���� */
.cta {
    background: linear-gradient(120deg, #0F2B5E, #1E4BD2);
    border-radius: 48px;
    margin: 40px auto;
    padding: 60px 40px;
    text-align: center;
    color: white;
}

    .cta h2 {
        font-size: 2rem;
        margin-bottom: 20px;
    }

    .cta .btn-primary {
        background: white;
        color: var(--primary-blue);
        margin-top: 16px;
        box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    }

.footer {
    background: #0F172A;
    color: #94A3B8;
    padding: 48px 0 24px;
    text-align: center;
}

/* ====================
   Hero 首屏 — 复刻 ithenticate hero-section 样式
   ==================== */
.hero-section {
    position: relative;
    padding: 120px 0 80px;
    background: linear-gradient(180deg, #eef2ff 0%, #f8faff 40%, #ffffff 100%);
    overflow: hidden;
    text-align: center;
}

.ih-hero-inner {
    max-width: 780px;
    margin: 0 auto;
}

.ih-hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: linear-gradient(135deg, #3B82F6 0%, #60A5FA 100%);
    color: #ffffff;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 20px;
    letter-spacing: 0.3px;
}

.ih-hero-eyebrow svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.ih-hero-title {
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    font-weight: 800;
    line-height: 1.2;
    color: #0F172A;
    margin: 0 0 16px;
    letter-spacing: -0.02em;
}

.ih-hero-tagline {
    font-size: 1.1rem;
    font-weight: 500;
    color: #2563EB;
    margin: 0 0 12px;
    line-height: 1.5;
}

.ih-hero-lead {
    font-size: 1rem;
    color: #64748B;
    margin: 0 auto 28px;
    line-height: 1.7;
    max-width: 540px;
}

.ih-hero-ctas {
    display: flex;
    align-items: center;
    gap: 14px;
    justify-content: center;
}

.hero-section > .hero-mockup {
    margin: 60px auto 0;
}

.hero-section .carousel-control-prev-icon,
.hero-section .carousel-control-next-icon {
    filter: invert(40%) sepia(0%) saturate(0%) brightness(40%);
}

.ih-cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 13px 26px;
    background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
    color: #ffffff;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(37,99,235,0.3);
    text-decoration: none;
}

.ih-cta-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(37,99,235,0.4);
    color: #ffffff;
}

.ih-cta-primary svg {
    width: 16px;
    height: 16px;
}

.ih-cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 13px 26px;
    background: #f2f2f0;
    color: #363535;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    border: 1px solid #dad9d9;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.ih-cta-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(54,53,53,0.1);
    color: #363535;
}

.ih-cta-secondary svg {
    width: 16px;
    height: 16px;
    color: #363535;
}

@media (max-width: 768px) {
    .hero-section { padding: 80px 0 40px; text-align: center; gap: 30px; }
    .ih-hero-inner { max-width: 100%; }
    .ih-hero-lead { max-width: 100%; }
    .ih-hero-ctas { flex-direction: column; }
    .ih-hero-ctas a { width: 100%; justify-content: center; }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.2rem;
    }

    .nav-links {
        display: none;
    }
    /* �ƶ��˼򻯣��������������������ݱ��� */
    .hero-grid {
        flex-direction: column;
    }

    .section-title {
        font-size: 1.8rem;
    }
}