* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root {
    --primary: #1a5cff;
    --primary-dark: #0d47d6;
    --primary-light: #e8eeff;
    --primary-gradient: linear-gradient(135deg, #1a5cff 0%, #0d47d6 100%);
    --text-dark: #0a1628;
    --text-gray: #4a5a6e;
    --text-light: #7a8a9e;
    --bg-white: #ffffff;
    --bg-gray: #f5f7fa;
    --border: #e8ecf1;
    --shadow: 0 8px 32px rgba(26, 92, 255, 0.1);
    --radius: 16px;
    --max: 1200px;
}
body {
    font-family:
        -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
        sans-serif;
    background: var(--bg-white);
    color: var(--text-dark);
    line-height: 1.6;
}
a {
    text-decoration: none;
    color: inherit;
}
.container {
    max-width: var(--max);
    margin: 0 auto;
    padding: 0 24px;
}
.btn-primary {
    display: inline-block;
    background: var(--primary-gradient);
    color: #fff;
    padding: 12px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 15px;
    border: none;
    cursor: pointer;
    transition: 0.3s;
    box-shadow: 0 4px 16px rgba(26, 92, 255, 0.3);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(26, 92, 255, 0.4);
}
.btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--primary);
    padding: 12px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 15px;
    border: 2px solid var(--primary);
    cursor: pointer;
    transition: 0.3s;
}
.btn-secondary:hover {
    background: var(--primary-light);
}

.navbar {
    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 rgba(232, 236, 241, 0.5);
}
.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 20px;
    color: var(--text-dark);
    flex-shrink: 0;
}
.logo-icon {
    width: 184px;
    height: 34px;
    background: var(--primary-gradient);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 800;
    font-size: 14px;
    background: url(../images/logo.png) no-repeat center;
    background-size: 100% 100%;
}
.logo span {
    color: var(--primary);
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 20px;
    list-style: none;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-gray);
}
.nav-links a {
    transition: 0.3s;
}
.nav-links a:hover {
    color: var(--primary);
}
.nav-links a.active {
    color: var(--primary);
    font-weight: 600;
}
.nav-cta {
    background: var(--primary-gradient);
    color: #fff !important;
    padding: 8px 20px;
    border-radius: 50px;
    font-weight: 600;
}
.nav-cta:hover {
    opacity: 0.9;
    color: #fff !important;
}
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}
.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-dark);
    border-radius: 4px;
}
@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        background: var(--bg-white);
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        padding: 24px;
        border-bottom: 1px solid var(--border);
        gap: 16px;
    }
    .nav-links.open {
        display: flex;
    }
    .hamburger {
        display: flex;
    }
}

.page-hero {
    padding: 120px 0 40px;
    background: var(--bg-gray);
    border-bottom: 1px solid var(--border);
}
.page-hero h1 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 12px;
}
.page-hero h1 span {
    color: var(--primary);
}
.page-hero p {
    font-size: 17px;
    color: var(--text-gray);
    max-width: 600px;
}
.section {
    padding: 48px 0;
}
.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 32px;
}
.section-header h2 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 8px;
}
.section-header p {
    font-size: 16px;
    color: var(--text-gray);
}
.bg-gray {
    background: var(--bg-gray);
}

.reasons-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}
.reason-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 20px 16px;
    text-align: center;
    transition: 0.3s;
    border: 1px solid var(--border);
    cursor: pointer;
}
.reason-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--primary);
}
.reason-card .icon {
    font-size: 28px;
    margin-bottom: 8px;
}
.reason-card h4 {
    font-size: 14px;
    font-weight: 600;
}
.reason-card p {
    font-size: 12px;
    color: var(--text-light);
}
.reason-card .arrow {
    color: var(--primary);
    margin-top: 6px;
    display: inline-block;
}
@media (max-width: 768px) {
    .reasons-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
.amount-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}
.amount-tag {
    padding: 10px 24px;
    background: var(--bg-white);
    border: 2px solid var(--border);
    border-radius: 50px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: 0.3s;
}
.amount-tag:hover,
.amount-tag.active {
    border-color: var(--primary);
    background: var(--primary-light);
    color: var(--primary);
}
.assets-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 14px;
}
.asset-card {
    background: var(--bg-gray);
    border-radius: var(--radius);
    padding: 20px 12px;
    text-align: center;
    transition: 0.3s;
    border: 2px solid transparent;
    cursor: pointer;
}
.asset-card:hover {
    border-color: var(--primary);
    background: var(--bg-white);
    box-shadow: var(--shadow);
    transform: translateY(-4px);
}
.asset-card .icon {
    font-size: 30px;
    margin-bottom: 4px;
}
.asset-card h4 {
    font-size: 13px;
    font-weight: 600;
}
.asset-card p {
    font-size: 11px;
    color: var(--text-light);
}
@media (max-width: 768px) {
    .assets-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.footer {
    background: var(--text-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 40px 0 28px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 32px;
    margin-bottom: 24px;
}
.footer-brand .logo {
    color: #fff;
    margin-bottom: 8px;
}
.footer-brand p {
    font-size: 13px;
    max-width: 280px;
    line-height: 1.8;
}
.footer-col h4 {
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
}
.footer-toggle {
    display: block;
    width: 100%;
    padding: 0;
    border: 0;
    background: transparent;
    color: inherit;
    font: inherit;
    text-align: left;
    cursor: default;
}
.footer-toggle-icon {
    display: none;
}
.footer-col a {
    display: block;
    font-size: 13px;
    margin-bottom: 8px;
    transition: 0.3s;
}
.footer-col a:hover {
    color: #fff;
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    flex-wrap: wrap;
    gap: 10px;
}
@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 0;
    }
    .footer-brand {
        margin-bottom: 18px;
    }
    .footer-col {
        border-bottom: 1px solid rgba(255, 255, 255, 0.16);
    }
    .footer-col h4 {
        margin-bottom: 0;
    }
    .footer-toggle {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 16px 0;
        cursor: pointer;
    }
    .footer-toggle-icon {
        display: block;
        width: 9px;
        height: 9px;
        margin-right: 4px;
        border-right: 2px solid currentColor;
        border-bottom: 2px solid currentColor;
        transform: rotate(45deg);
        transition: transform 0.2s ease;
    }
    .footer-col.is-open .footer-toggle-icon {
        transform: rotate(-135deg);
    }
    .footer-links {
        display: none;
        margin-bottom: 12px;
        padding: 8px 16px;
        background: rgba(255, 255, 255, 0.04);
    }
    .footer-col.is-open .footer-links {
        display: block;
    }
    .footer-links a {
        display: flex;
        align-items: center;
        min-height: 48px;
        margin-bottom: 0;
    }
}
@media (max-width: 480px) {
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}