* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    color: #18304f;
    background: linear-gradient(180deg, #f4f9ff 0%, #ffffff 42%, #f7fbff 100%);
    line-height: 1.75;
    overflow-x: hidden;
}

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

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

.container {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(70, 139, 223, 0.12);
}

.header-inner {
    min-height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    color: #15345b;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.logo {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(70, 139, 223, 0.18);
}

.nav-toggle {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.nav-toggle-label {
    width: 42px;
    height: 42px;
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    padding: 9px;
    border-radius: 14px;
    border: 1px solid rgba(70, 139, 223, 0.18);
    background: #ffffff;
    cursor: pointer;
}

.nav-toggle-label span {
    display: block;
    height: 2px;
    width: 100%;
    border-radius: 99px;
    background: rgb(70, 139, 223);
}

.site-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 76px;
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: 14px;
    background: #ffffff;
    border: 1px solid rgba(70, 139, 223, 0.12);
    border-radius: 20px;
    box-shadow: 0 18px 42px rgba(48, 82, 122, 0.14);
}

.nav-toggle:checked ~ .site-nav {
    display: flex;
}

.site-nav a {
    padding: 12px 14px;
    border-radius: 14px;
    color: #31506f;
    font-weight: 600;
}

.site-nav a:hover {
    background: rgba(70, 139, 223, 0.1);
    color: rgb(70, 139, 223);
}

main {
    min-height: 72vh;
}

.hero {
    padding: 42px 0 38px;
    position: relative;
}

.hero::before,
.hero::after {
    content: "";
    position: absolute;
    border-radius: 999px;
    background: rgba(70, 139, 223, 0.12);
    filter: blur(20px);
    z-index: -1;
}

.hero::before {
    width: 220px;
    height: 220px;
    top: 20px;
    right: -80px;
}

.hero::after {
    width: 170px;
    height: 170px;
    bottom: 20px;
    left: -70px;
}

.hero-grid {
    display: grid;
    gap: 28px;
    align-items: center;
}

.hero h1,
.page-hero h1 {
    margin: 12px 0 14px;
    font-size: clamp(2rem, 8vw, 4.6rem);
    line-height: 1.12;
    letter-spacing: -0.04em;
    color: #112b4a;
}

.hero p,
.page-hero p {
    margin: 0 0 22px;
    color: #4a6280;
    font-size: 1.04rem;
}

.badges,
.tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 18px 0 22px;
}

.badge,
.tag {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(70, 139, 223, 0.11);
    color: #245c9e;
    font-weight: 700;
    font-size: 0.86rem;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 13px 24px;
    border-radius: 999px;
    background: rgb(70, 139, 223);
    color: #ffffff;
    font-weight: 800;
    box-shadow: 0 14px 28px rgba(70, 139, 223, 0.26);
    border: 1px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    background: #3f82d2;
    box-shadow: 0 18px 34px rgba(70, 139, 223, 0.32);
}

.hero-visual {
    position: relative;
    padding: 22px;
    border-radius: 30px;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.9), rgba(225, 240, 255, 0.88));
    border: 1px solid rgba(70, 139, 223, 0.18);
    box-shadow: 0 24px 56px rgba(38, 76, 126, 0.15);
}

.hero-visual img {
    width: min(420px, 100%);
    margin: 0 auto;
    border-radius: 30px;
}

.float-card {
    margin-top: 18px;
    padding: 14px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.86);
    border: 1px solid rgba(70, 139, 223, 0.12);
    box-shadow: 0 12px 28px rgba(48, 82, 122, 0.1);
}

.float-card strong {
    display: block;
    margin-bottom: 4px;
    color: #12375e;
}

.section {
    padding: 42px 0;
}

.section.alt {
    background: linear-gradient(180deg, rgba(236, 246, 255, 0.75), rgba(255, 255, 255, 0.75));
}

.section-title {
    max-width: 760px;
    margin-bottom: 22px;
}

.section-title .eyebrow,
.eyebrow {
    display: inline-block;
    color: rgb(70, 139, 223);
    font-weight: 800;
    letter-spacing: 0.08em;
    font-size: 0.84rem;
    text-transform: uppercase;
}

.section-title h2,
.content-block h2 {
    margin: 8px 0 10px;
    color: #122f51;
    font-size: clamp(1.55rem, 4vw, 2.35rem);
    line-height: 1.22;
}

.section-title p,
.content-block p,
.card p,
.info-panel p,
.faq-item p,
.timeline p {
    color: #526b88;
    margin: 0;
}

.feature-grid,
.card-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.card,
.faq-item,
.info-panel,
.timeline,
.step-card {
    background: #ffffff;
    border: 1px solid rgba(70, 139, 223, 0.12);
    border-radius: 22px;
    padding: 20px;
    box-shadow: 0 14px 34px rgba(35, 74, 112, 0.08);
}

.card h3,
.faq-item h3,
.info-panel h3,
.step-card h3 {
    margin: 0 0 8px;
    color: #14365e;
    font-size: 1.1rem;
}

.card-icon {
    width: 42px;
    height: 42px;
    margin-bottom: 14px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    color: rgb(70, 139, 223);
    background: rgba(70, 139, 223, 0.12);
    font-weight: 900;
}

.two-column {
    display: grid;
    gap: 18px;
}

.stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 20px;
}

.stat {
    padding: 18px;
    border-radius: 22px;
    background: linear-gradient(145deg, rgba(70, 139, 223, 0.12), rgba(255, 255, 255, 0.8));
    border: 1px solid rgba(70, 139, 223, 0.12);
}

.stat strong {
    display: block;
    color: #12375e;
    font-size: 1.4rem;
}

.page-hero {
    padding: 48px 0 28px;
    background: linear-gradient(135deg, rgba(70, 139, 223, 0.14), rgba(255, 255, 255, 0.7));
    border-bottom: 1px solid rgba(70, 139, 223, 0.1);
}

.page-layout {
    display: grid;
    gap: 22px;
    padding: 34px 0 52px;
}

.content-block {
    background: rgba(255, 255, 255, 0.76);
    border: 1px solid rgba(70, 139, 223, 0.12);
    border-radius: 26px;
    padding: 22px;
    box-shadow: 0 14px 36px rgba(45, 82, 122, 0.08);
}

.content-block p + p {
    margin-top: 14px;
}

.content-block ul,
.content-block ol {
    margin: 14px 0 0;
    padding-left: 20px;
    color: #526b88;
}

.content-block li + li {
    margin-top: 8px;
}

.download-panel {
    margin-top: 22px;
    padding: 20px;
    border-radius: 24px;
    background: linear-gradient(135deg, rgba(70, 139, 223, 0.14), rgba(255, 255, 255, 0.88));
    border: 1px solid rgba(70, 139, 223, 0.14);
    display: grid;
    gap: 14px;
    align-items: center;
}

.download-panel h2,
.download-panel h3 {
    margin: 0;
    color: #12375e;
}

.download-panel p {
    margin: 0;
    color: #526b88;
}

.faq-list {
    display: grid;
    gap: 14px;
}

.faq-item {
    padding: 18px;
}

.steps {
    counter-reset: step;
    display: grid;
    gap: 14px;
}

.step-card {
    position: relative;
    padding-left: 66px;
}

.step-card::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 18px;
    top: 20px;
    width: 34px;
    height: 34px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: rgb(70, 139, 223);
    color: #fff;
    font-weight: 800;
}

.notice {
    border-left: 4px solid rgb(70, 139, 223);
    background: rgba(70, 139, 223, 0.08);
    padding: 16px;
    border-radius: 18px;
    color: #3d5876;
}

.site-footer {
    padding: 40px 0 22px;
    background: #102846;
    color: rgba(255, 255, 255, 0.78);
}

.footer-grid {
    display: grid;
    gap: 28px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    margin-bottom: 12px;
}

.footer-logo {
    width: 34px;
    height: 34px;
    border-radius: 11px;
}

.site-footer h3 {
    color: #ffffff;
    margin: 0 0 12px;
    font-size: 1rem;
}

.site-footer p {
    margin: 0;
    max-width: 520px;
}

.site-footer a {
    display: block;
    margin: 8px 0;
    color: rgba(255, 255, 255, 0.76);
}

.site-footer a:hover {
    color: #ffffff;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    margin-top: 30px;
    padding-top: 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 0.9rem;
}

@media (min-width: 640px) {
    .container {
        width: min(1120px, calc(100% - 56px));
    }

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

    .download-panel {
        grid-template-columns: 1fr auto;
    }
}

@media (min-width: 880px) {
    .nav-toggle-label {
        display: none;
    }

    .site-nav {
        position: static;
        display: flex;
        flex-direction: row;
        align-items: center;
        padding: 0;
        gap: 4px;
        background: transparent;
        border: 0;
        box-shadow: none;
    }

    .site-nav a {
        padding: 10px 12px;
        font-size: 0.94rem;
    }

    .hero {
        padding: 76px 0 64px;
    }

    .hero-grid {
        grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
        gap: 42px;
    }

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

    .two-column,
    .page-layout {
        grid-template-columns: minmax(0, 1fr) minmax(280px, 0.42fr);
        align-items: start;
    }

    .content-block {
        padding: 30px;
    }

    .footer-grid {
        grid-template-columns: 1.4fr 0.7fr 0.7fr;
    }

    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}

@media (min-width: 1120px) {
    .site-nav a {
        padding: 10px 14px;
    }

    .card,
    .faq-item,
    .info-panel,
    .timeline,
    .step-card {
        padding: 24px;
    }
}