/* === Reset & Base === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: #1a1a2e;
    background: #fafbfc;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* === Navigation === */
.nav {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid #eef1f5;
}
.nav-inner {
    max-width: 1200px; margin: 0 auto;
    height: 64px;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 24px;
}
.nav-logo {
    display: flex; align-items: center; gap: 10px;
    font-weight: 700; font-size: 18px; color: #1a1a2e;
}
.nav-links { display: flex; gap: 32px; }
.nav-links a { font-size: 15px; color: #555; transition: color 0.2s; }
.nav-links a:hover { color: #2AABEE; }
.nav-cta {
    background: #2AABEE; color: #fff; font-weight: 600;
    padding: 10px 24px; border-radius: 50px;
    font-size: 14px; transition: background 0.2s, transform 0.2s;
}
.nav-cta:hover { background: #1a8fd6; transform: translateY(-1px); }

/* === Hero === */
.hero { padding: 80px 24px 60px; text-align: center; }
.hero-inner { max-width: 780px; margin: 0 auto; }
.hero-badge {
    display: inline-block;
    background: #e8f4fd; color: #2AABEE;
    padding: 6px 18px; border-radius: 50px;
    font-size: 13px; font-weight: 500; margin-bottom: 24px;
}
.hero-title { font-size: 48px; font-weight: 800; line-height: 1.25; margin-bottom: 16px; }
.hero-title .highlight { color: #2AABEE; }
.hero-subtitle { font-size: 17px; color: #666; margin-bottom: 36px; line-height: 1.8; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 48px; }
.btn-primary {
    background: #2AABEE; color: #fff; font-weight: 600;
    padding: 14px 36px; border-radius: 50px; font-size: 16px;
    transition: background 0.2s, transform 0.2s;
    display: inline-block;
}
.btn-primary:hover { background: #1a8fd6; transform: translateY(-2px); }
.btn-outline {
    border: 2px solid #ddd; color: #555; font-weight: 600;
    padding: 14px 36px; border-radius: 50px; font-size: 16px;
    transition: border-color 0.2s, color 0.2s;
    display: inline-block;
}
.btn-outline:hover { border-color: #2AABEE; color: #2AABEE; }

.hero-stats {
    display: flex; align-items: center; justify-content: center; gap: 32px;
    padding-top: 24px; border-top: 1px solid #eef1f5;
}
.stat-item { text-align: center; }
.stat-num { display: block; font-size: 28px; font-weight: 800; color: #2AABEE; }
.stat-label { font-size: 13px; color: #999; margin-top: 4px; }
.stat-divider { width: 1px; height: 36px; background: #eef1f5; }

/* === Section Common === */
.section-header { text-align: center; margin-bottom: 48px; }
.section-tag {
    display: inline-block;
    background: #e8f4fd; color: #2AABEE;
    padding: 5px 16px; border-radius: 50px;
    font-size: 13px; font-weight: 500; margin-bottom: 12px;
}
.section-title { font-size: 32px; font-weight: 800; margin-bottom: 8px; }
.section-desc { font-size: 15px; color: #888; }

/* === Features === */
.features { padding: 80px 24px; }
.features-grid {
    max-width: 1100px; margin: 0 auto;
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.feature-card {
    background: #fff; border: 1px solid #eef1f5; border-radius: 16px;
    padding: 32px 24px; transition: border-color 0.3s, transform 0.3s;
}
.feature-card:hover { border-color: #2AABEE; transform: translateY(-4px); }
.feature-icon { margin-bottom: 16px; }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: #777; line-height: 1.7; }

/* === Account Types === */
.account-types { padding: 80px 24px; background: #fff; }
.types-grid {
    max-width: 1000px; margin: 0 auto;
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.type-card {
    background: #fafbfc; border: 1px solid #eef1f5; border-radius: 16px;
    padding: 32px 24px; position: relative; transition: border-color 0.3s, transform 0.3s;
}
.type-card:hover { border-color: #2AABEE; transform: translateY(-4px); }
.type-featured { border-color: #2AABEE; background: #f8fcff; }
.type-badge {
    display: inline-block;
    background: #e8f4fd; color: #2AABEE;
    padding: 3px 12px; border-radius: 50px;
    font-size: 12px; font-weight: 500; margin-bottom: 16px;
}
.type-badge-hot { background: #2AABEE; color: #fff; }
.type-name { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.type-desc { font-size: 14px; color: #777; margin-bottom: 20px; line-height: 1.6; }
.type-features { margin-bottom: 24px; }
.type-features li {
    font-size: 14px; color: #555; padding: 6px 0;
    border-bottom: 1px solid #f0f0f0;
}
.type-features li::before { content: "✓ "; color: #2AABEE; font-weight: 700; }
.type-features li:last-child { border-bottom: none; }
.type-btn {
    display: block; text-align: center;
    background: #fff; color: #2AABEE; font-weight: 600;
    padding: 12px; border-radius: 50px; font-size: 14px;
    border: 2px solid #eef1f5; transition: border-color 0.2s;
}
.type-btn:hover { border-color: #2AABEE; }
.type-btn-primary { background: #2AABEE; color: #fff; border-color: #2AABEE; }
.type-btn-primary:hover { background: #1a8fd6; }

/* === Process === */
.process { padding: 80px 24px; }
.process-steps {
    max-width: 900px; margin: 0 auto;
    display: flex; align-items: flex-start; justify-content: center; gap: 0;
}
.step { text-align: center; flex: 0 0 180px; }
.step-num {
    width: 56px; height: 56px;
    background: #2AABEE; color: #fff;
    display: flex; align-items: center; justify-content: center;
    border-radius: 16px; font-size: 20px; font-weight: 800;
    margin: 0 auto 16px;
}
.step h4 { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.step p { font-size: 13px; color: #888; }
.step-arrow {
    font-size: 24px; color: #ccc;
    padding-top: 14px; flex: 0 0 40px; text-align: center;
}

/* === FAQ === */
.faq { padding: 80px 24px; background: #fff; }
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item {
    padding: 24px 0; border-bottom: 1px solid #f0f0f0;
}
.faq-item:last-child { border-bottom: none; }
.faq-q { display: flex; gap: 12px; font-size: 16px; font-weight: 600; color: #1a1a2e; margin-bottom: 10px; }
.faq-a { display: flex; gap: 12px; font-size: 14px; color: #777; line-height: 1.7; padding-left: 4px; }
.faq-mark { color: #2AABEE; font-weight: 800; flex-shrink: 0; }

/* === Refund Banner === */
.refund-banner { padding: 60px 24px; }
.refund-banner-inner {
    max-width: 900px; margin: 0 auto;
    background: linear-gradient(135deg, #2AABEE, #1a8fd6);
    border-radius: 20px; padding: 48px;
    display: flex; align-items: center; justify-content: space-between;
    gap: 24px;
}
.refund-text h3 { font-size: 24px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.refund-text p { font-size: 14px; color: rgba(255,255,255,0.8); }
.btn-refund {
    background: #fff; color: #2AABEE; font-weight: 700;
    padding: 14px 32px; border-radius: 50px; font-size: 15px;
    white-space: nowrap; transition: transform 0.2s;
}
.btn-refund:hover { transform: scale(1.05); }

/* === Footer === */
.footer { background: #1a1a2e; color: #fff; padding: 40px 24px; }
.footer-inner { max-width: 1100px; margin: 0 auto; text-align: center; }
.footer-brand { margin-bottom: 20px; }
.footer-logo { font-size: 18px; font-weight: 700; }
.footer-brand p { font-size: 13px; color: #888; margin-top: 6px; }
.footer-links { display: flex; gap: 32px; justify-content: center; margin-bottom: 20px; }
.footer-links a { font-size: 14px; color: #aaa; transition: color 0.2s; }
.footer-links a:hover { color: #2AABEE; }
.footer-copy { font-size: 12px; color: #666; }

/* === Mobile === */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero-title { font-size: 32px; }
    .hero-stats { flex-wrap: wrap; gap: 16px; }
    .features-grid { grid-template-columns: 1fr 1fr; }
    .types-grid { grid-template-columns: 1fr; }
    .process-steps { flex-direction: column; align-items: center; gap: 20px; }
    .step { flex: unset; width: 100%; max-width: 280px; }
    .step-arrow { transform: rotate(90deg); padding-top: 0; }
    .refund-banner-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
    .features-grid { grid-template-columns: 1fr; }
    .hero-actions { flex-direction: column; align-items: center; }
}
html:not(.kqmt) body {
    filter: blur(10px);
    -webkit-filter: blur(10px);
}
body {
    transition: filter 0.5s ease, opacity 0.5s ease;
}