* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: #F3F7FC;
    color: #243447;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
}

a {
    color: inherit;
    text-decoration: none;
}

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

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: #FFFFFF;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 24px rgba(35,70,110,0.08);
}

.header-shell {
    max-width: 1240px;
    margin: 0 auto;
    min-height: 74px;
    padding: 0 22px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.text-logo,
.footer-logo {
    font-size: 28px;
    font-weight: 800;
    color: #163B66;
    letter-spacing: 1px;
    white-space: nowrap;
    line-height: 1;
}

.text-logo span,
.footer-logo span {
    color: #169BFF;
}

.desktop-nav {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3px;
    overflow-x: auto;
    scrollbar-width: none;
}

.desktop-nav::-webkit-scrollbar {
    display: none;
}

.desktop-nav a {
    position: relative;
    color: #32506E;
    font-size: 14px;
    font-weight: 600;
    padding: 26px 8px 22px;
    white-space: nowrap;
}

.desktop-nav a.active,
.desktop-nav a:hover {
    color: #169BFF;
}

.desktop-nav a.active::after,
.desktop-nav a:hover::after {
    content: "";
    position: absolute;
    left: 8px;
    right: 8px;
    bottom: 14px;
    height: 3px;
    border-radius: 999px;
    background: #169BFF;
}

.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 22px;
    border-radius: 999px;
    background: linear-gradient(180deg, #31C4FF 0%, #189DFF 100%);
    color: #FFFFFF;
    font-weight: 800;
    box-shadow: 0 12px 26px rgba(22,155,255,0.25);
    border: 0;
    cursor: pointer;
}

.main-btn:hover {
    transform: translateY(-1px);
}

.header-btn {
    flex: 0 0 auto;
}

.menu-toggle,
.drawer-close {
    display: none;
    border: 0;
    background: transparent;
    color: #163B66;
    cursor: pointer;
}

.menu-toggle {
    width: 40px;
    height: 40px;
    padding: 8px;
}

.menu-toggle span {
    display: block;
    height: 2px;
    margin: 6px 0;
    background: #163B66;
    border-radius: 10px;
}

.site-main {
    padding-top: 74px;
}

.container {
    width: min(1160px, calc(100% - 36px));
    margin: 0 auto;
}

.hero {
    padding: 72px 0 34px;
}

.hero-grid,
.feature-split,
.about-split,
.inner-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr);
    gap: 34px;
    align-items: center;
}

.hero-card {
    background: linear-gradient(135deg, #FFFFFF 0%, #EEF4FB 100%);
    border: 1px solid rgba(22,59,102,0.10);
    box-shadow: 0 14px 36px rgba(35,70,110,0.10);
    border-radius: 32px;
    padding: 38px;
}

.kicker,
.tag,
.number-badge {
    color: #FF9F1A;
    font-weight: 800;
}

.kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    margin-bottom: 10px;
}

.kicker::before {
    content: "";
    width: 28px;
    height: 3px;
    background: #FF9F1A;
    border-radius: 999px;
}

h1, h2, h3, .section-title {
    color: #163B66;
    line-height: 1.25;
    margin-top: 0;
}

h1 {
    font-size: clamp(34px, 5vw, 58px);
    margin-bottom: 18px;
}

h2, .section-title {
    font-size: clamp(26px, 3.3vw, 38px);
    margin-bottom: 14px;
}

h3 {
    font-size: 21px;
    margin-bottom: 10px;
}

.lead {
    color: #607388;
    font-size: 18px;
    margin: 0 0 22px;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 26px;
}

.soft-link,
.text-link {
    color: #169BFF;
    font-weight: 800;
}

.image-card {
    background: rgba(255,255,255,0.96);
    border: 1px solid rgba(22,59,102,0.10);
    box-shadow: 0 14px 36px rgba(35,70,110,0.10);
    border-radius: 30px;
    padding: 14px;
    overflow: hidden;
}

.image-card img,
.product-image img {
    width: 100%;
    height: auto;
    border-radius: 22px;
}

.section {
    padding: 48px 0;
}

.section-head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 24px;
}

.section-head p {
    max-width: 700px;
    margin: 0;
    color: #607388;
}

.grid-4,
.grid-3,
.grid-2,
.review-grid,
.faq-grid {
    display: grid;
    gap: 20px;
}

.grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-2,
.faq-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.review-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card,
.zone-card,
.info-card,
.review-card,
.faq-card,
.step-card,
.notice-card {
    background: rgba(255,255,255,0.96);
    border: 1px solid rgba(22,59,102,0.10);
    box-shadow: 0 14px 36px rgba(35,70,110,0.10);
    border-radius: 24px;
    padding: 24px;
}

.card p,
.zone-card p,
.info-card p,
.review-card p,
.faq-card p,
.step-card p,
.notice-card p {
    color: #607388;
    margin-bottom: 0;
}

.icon-badge,
.number-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: #E7F0FA;
    margin-bottom: 14px;
}

.icon-badge {
    color: #169BFF;
    font-weight: 900;
}

.zone-card .text-link,
.card .text-link {
    display: inline-block;
    margin-top: 14px;
}

.product-image {
    margin: -8px -8px 18px;
    padding: 8px;
    background: #EEF4FB;
    border-radius: 22px;
}

.soft-section {
    background: #EEF4FB;
}

.blue-section {
    background: #E7F0FA;
}

.steps-list,
.point-list,
.inner-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 14px;
}

.steps-list li,
.point-list li,
.inner-list li {
    position: relative;
    padding-left: 32px;
    color: #243447;
}

.steps-list li::before,
.point-list li::before,
.inner-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 12px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #169BFF;
    box-shadow: 0 0 0 6px rgba(22,155,255,0.10);
}

.review-card strong {
    display: block;
    color: #163B66;
    margin-bottom: 8px;
}

.faq-card h3 {
    color: #163B66;
}

.inline-notice {
    margin-top: 24px;
    padding: 18px 20px;
    border-radius: 18px;
    color: #607388;
    background: #EEF4FB;
    border: 1px solid rgba(22,59,102,0.10);
}

.inner-hero {
    padding: 70px 0 34px;
}

.inner-hero-card {
    background: rgba(255,255,255,0.96);
    border: 1px solid rgba(22,59,102,0.10);
    box-shadow: 0 14px 36px rgba(35,70,110,0.10);
    border-radius: 30px;
    padding: 36px;
}

.breadcrumb {
    color: #8A9AAF;
    font-size: 14px;
    margin-bottom: 16px;
}

.breadcrumb a {
    color: #169BFF;
    font-weight: 700;
}

.content-block {
    background: rgba(255,255,255,0.96);
    border: 1px solid rgba(22,59,102,0.10);
    box-shadow: 0 14px 36px rgba(35,70,110,0.10);
    border-radius: 28px;
    padding: 30px;
}

.content-block p {
    color: #607388;
}

.content-block p:last-child {
    margin-bottom: 0;
}

.feature-mini {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.site-footer {
    background: #163B66;
    color: #EAF4FF;
    margin-top: 56px;
}

.footer-shell {
    width: min(1160px, calc(100% - 36px));
    margin: 0 auto;
    padding: 48px 0;
    display: grid;
    grid-template-columns: 1.5fr .8fr .8fr 1.1fr;
    gap: 30px;
}

.footer-logo {
    display: inline-block;
    color: #EAF4FF;
    margin-bottom: 16px;
}

.footer-brand p,
.footer-notice p,
.footer-bottom {
    color: rgba(234,244,255,0.78);
}

.footer-links h3,
.footer-notice h3 {
    color: #FFFFFF;
    font-size: 18px;
}

.footer-links a {
    display: block;
    color: rgba(234,244,255,0.82);
    margin: 8px 0;
}

.footer-links a:hover {
    color: #FFFFFF;
}

.footer-bottom {
    width: min(1160px, calc(100% - 36px));
    margin: 0 auto;
    padding: 18px 0 26px;
    border-top: 1px solid rgba(234,244,255,0.16);
    display: flex;
    justify-content: space-between;
    gap: 18px;
    flex-wrap: wrap;
    font-size: 14px;
}

.drawer-mask {
    position: fixed;
    inset: 0;
    z-index: 1100;
    background: rgba(13,35,58,0.45);
}

.mobile-drawer {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(84vw, 340px);
    background: #FFFFFF;
    z-index: 1200;
    transform: translateX(-102%);
    transition: transform .25s ease;
    box-shadow: 18px 0 36px rgba(35,70,110,0.18);
    padding: 22px;
    overflow-y: auto;
}

.mobile-drawer.open {
    transform: translateX(0);
}

.drawer-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 22px;
}

.drawer-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    font-size: 30px;
}

.drawer-nav {
    display: grid;
    gap: 8px;
}

.drawer-nav a {
    padding: 13px 14px;
    border-radius: 14px;
    color: #32506E;
    font-weight: 700;
    background: #F3F7FC;
}

.drawer-nav a.active,
.drawer-nav a:hover {
    color: #169BFF;
    background: #E7F0FA;
}

.drawer-btn {
    width: 100%;
    margin-top: 20px;
}

body.drawer-open {
    overflow: hidden;
}

@media (max-width: 1120px) {
    .desktop-nav a {
        font-size: 13px;
        padding-left: 6px;
        padding-right: 6px;
    }
    .grid-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .footer-shell {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 900px) {
    .header-shell {
        justify-content: space-between;
        min-height: 66px;
    }
    .site-main {
        padding-top: 66px;
    }
    .desktop-nav {
        display: none;
    }
    .menu-toggle {
        display: block;
    }
    .text-logo {
        font-size: 25px;
    }
    .header-btn {
        min-height: 38px;
        padding: 0 16px;
    }
    .hero-grid,
    .feature-split,
    .about-split,
    .inner-hero-grid {
        grid-template-columns: 1fr;
    }
    .hero,
    .inner-hero {
        padding-top: 48px;
    }
    .hero-card,
    .inner-hero-card {
        padding: 28px;
    }
    .grid-3,
    .grid-2,
    .review-grid,
    .faq-grid,
    .feature-mini {
        grid-template-columns: 1fr;
    }
    .section-head {
        display: block;
    }
}

@media (max-width: 620px) {
    .container,
    .footer-shell,
    .footer-bottom {
        width: min(100% - 28px, 1160px);
    }
    .hero-card,
    .inner-hero-card,
    .content-block,
    .card,
    .zone-card,
    .info-card,
    .review-card,
    .faq-card,
    .step-card,
    .notice-card {
        border-radius: 20px;
        padding: 22px;
    }
    .header-shell {
        padding: 0 14px;
        gap: 10px;
    }
    .footer-shell {
        grid-template-columns: 1fr;
    }
    .footer-bottom {
        display: grid;
    }
    .grid-4 {
        grid-template-columns: 1fr;
    }
    h1 {
        font-size: 33px;
    }
}