* {
    box-sizing: border-box;
}

:root {
    --primary: rgb(70,139,223);
    --primary-dark: rgb(36, 90, 165);
    --primary-soft: rgb(232, 242, 255);
    --text: #142033;
    --muted: #66758d;
    --line: #dce8f7;
    --card: #ffffff;
    --bg: #f6faff;
    --shadow: 0 16px 40px rgba(35, 91, 160, 0.10);
    --radius: 22px;
}

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: var(--text);
    background:
        radial-gradient(circle at top left, rgba(70,139,223,0.14), transparent 32rem),
        linear-gradient(180deg, #f8fbff 0%, #eef6ff 48%, #ffffff 100%);
    line-height: 1.7;
    overflow-x: hidden;
}

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

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

.container {
    width: min(100% - 32px, 1180px);
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    background: rgba(255,255,255,0.92);
    border-bottom: 1px solid rgba(220,232,247,0.82);
    backdrop-filter: blur(16px);
}

.nav-wrap {
    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: var(--primary-dark);
    letter-spacing: 0.02em;
}

.brand-logo {
    width: 38px;
    height: 38px;
    object-fit: contain;
    border-radius: 12px;
}

.brand-name {
    font-size: 18px;
}

.nav-toggle {
    width: 44px;
    height: 44px;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 14px;
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    padding: 0 11px;
    cursor: pointer;
}

.nav-toggle span {
    height: 2px;
    width: 100%;
    background: var(--primary-dark);
    border-radius: 99px;
}

.site-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 76px;
    display: none;
    flex-direction: column;
    gap: 8px;
    padding: 14px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: var(--shadow);
}

.site-nav.open {
    display: flex;
}

.site-nav a {
    padding: 11px 13px;
    border-radius: 12px;
    color: #33435a;
    font-weight: 600;
}

.site-nav a.active,
.site-nav a:hover {
    color: var(--primary-dark);
    background: var(--primary-soft);
}

.hero {
    padding: 54px 0 38px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
    align-items: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    border: 1px solid rgba(70,139,223,0.22);
    border-radius: 999px;
    background: rgba(232,242,255,0.78);
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 700;
}

.hero h1,
.page-hero h1 {
    margin: 16px 0 14px;
    font-size: clamp(32px, 9vw, 64px);
    line-height: 1.08;
    letter-spacing: -0.05em;
}

.hero p,
.page-hero p {
    color: var(--muted);
    font-size: 17px;
    margin: 0 0 22px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
    margin-top: 24px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 24px;
    border-radius: 999px;
    background: var(--primary);
    color: #fff;
    font-weight: 800;
    box-shadow: 0 12px 22px rgba(70,139,223,0.26);
    border: 1px solid rgba(70,139,223,0.35);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    background: var(--primary-dark);
    box-shadow: 0 16px 26px rgba(70,139,223,0.30);
}

.trust-row {
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    margin-top: 20px;
}

.trust-row span,
.badge {
    display: inline-flex;
    align-items: center;
    padding: 8px 11px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid var(--line);
    color: #315073;
    font-size: 13px;
    font-weight: 700;
    box-shadow: 0 8px 18px rgba(35,91,160,0.06);
}

.product-visual {
    position: relative;
    padding: 18px;
    border-radius: 28px;
    background: linear-gradient(145deg, rgba(70,139,223,0.16), rgba(255,255,255,0.92));
    border: 1px solid rgba(70,139,223,0.14);
    box-shadow: var(--shadow);
}

.product-visual::before,
.product-visual::after {
    content: "";
    position: absolute;
    border-radius: 999px;
    background: rgba(70,139,223,0.16);
    filter: blur(2px);
}

.product-visual::before {
    width: 76px;
    height: 76px;
    right: 20px;
    top: 32px;
}

.product-visual::after {
    width: 48px;
    height: 48px;
    left: 28px;
    bottom: 32px;
}

.product-visual img {
    position: relative;
    z-index: 2;
    width: min(390px, 86%);
    margin: 0 auto;
    filter: drop-shadow(0 22px 28px rgba(22, 55, 110, 0.16));
}

.section {
    padding: 42px 0;
}

.section-title {
    margin-bottom: 20px;
}

.section-title h2 {
    margin: 0 0 10px;
    font-size: clamp(25px, 6vw, 42px);
    line-height: 1.18;
    letter-spacing: -0.03em;
}

.section-title p {
    margin: 0;
    color: var(--muted);
    max-width: 780px;
}

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

.card {
    background: rgba(255,255,255,0.92);
    border: 1px solid rgba(220,232,247,0.95);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: 0 10px 28px rgba(35,91,160,0.06);
}

.card h3 {
    margin: 0 0 10px;
    font-size: 20px;
    color: #18365d;
}

.card p {
    margin: 0;
    color: var(--muted);
}

.card ul,
.content-card ul,
.content-card ol {
    margin: 12px 0 0;
    padding-left: 20px;
    color: var(--muted);
}

.stat-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 18px;
}

.stat {
    padding: 18px;
    background: linear-gradient(135deg, #fff, var(--primary-soft));
    border: 1px solid rgba(70,139,223,0.16);
    border-radius: 18px;
}

.stat strong {
    display: block;
    color: var(--primary-dark);
    font-size: 24px;
    line-height: 1;
}

.stat span {
    color: var(--muted);
    font-size: 13px;
}

.page-hero {
    padding: 48px 0 28px;
}

.page-hero .container {
    max-width: 920px;
}

.content-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
    padding-bottom: 52px;
}

.content-card {
    background: rgba(255,255,255,0.94);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
}

.content-card h2 {
    margin: 0 0 12px;
    color: #18365d;
    font-size: 24px;
}

.content-card p {
    color: var(--muted);
    margin: 0 0 14px;
}

.notice {
    border-left: 4px solid var(--primary);
    background: rgba(232,242,255,0.72);
    padding: 16px;
    border-radius: 16px;
    color: #315073;
}

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

.faq-item {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 18px;
    box-shadow: 0 8px 20px rgba(35,91,160,0.05);
}

.faq-item h3 {
    margin: 0 0 8px;
    font-size: 18px;
    color: #18365d;
}

.faq-item p {
    margin: 0;
    color: var(--muted);
}

.cta-panel {
    margin-top: 24px;
    padding: 24px;
    border-radius: 24px;
    background:
        linear-gradient(135deg, rgba(70,139,223,0.12), rgba(255,255,255,0.96)),
        #fff;
    border: 1px solid rgba(70,139,223,0.16);
    box-shadow: var(--shadow);
}

.cta-panel h2,
.cta-panel h3 {
    margin: 0 0 10px;
}

.cta-panel p {
    margin: 0 0 18px;
    color: var(--muted);
}

.steps {
    counter-reset: step;
    display: grid;
    gap: 12px;
}

.step {
    position: relative;
    padding: 18px 18px 18px 60px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
}

.step::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 18px;
    top: 18px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
}

.step h3 {
    margin: 0 0 6px;
    font-size: 18px;
}

.step p {
    margin: 0;
    color: var(--muted);
}

.link-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.guide-link {
    display: block;
    padding: 18px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
    transition: transform .2s ease, border-color .2s ease;
}

.guide-link:hover {
    transform: translateY(-2px);
    border-color: rgba(70,139,223,0.45);
}

.guide-link strong {
    display: block;
    color: #18365d;
    margin-bottom: 4px;
}

.guide-link span {
    color: var(--muted);
    font-size: 14px;
}

.site-footer {
    background: #10213c;
    color: rgba(255,255,255,0.78);
    padding: 42px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

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

.footer-brand img {
    width: 34px;
    height: 34px;
    border-radius: 10px;
}

.site-footer h3 {
    color: #fff;
    margin: 0 0 10px;
    font-size: 16px;
}

.site-footer a {
    display: block;
    color: rgba(255,255,255,0.76);
    margin: 7px 0;
}

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

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: 8px;
    border-top: 1px solid rgba(255,255,255,0.12);
    margin-top: 28px;
    padding-top: 18px;
    font-size: 13px;
    color: rgba(255,255,255,0.62);
}

@media (min-width: 700px) {
    .container {
        width: min(100% - 48px, 1180px);
    }

    .grid.two,
    .grid.three,
    .stat-grid,
    .link-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero {
        padding: 72px 0 52px;
    }

    .content-card {
        padding: 30px;
    }

    .footer-grid {
        grid-template-columns: 1.6fr 1fr 1fr 1fr;
    }

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

@media (min-width: 980px) {
    .nav-toggle {
        display: none;
    }

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

    .site-nav a {
        padding: 8px 12px;
        font-size: 15px;
    }

    .hero-grid {
        grid-template-columns: 1.05fr 0.95fr;
        gap: 54px;
    }

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

    .content-layout.with-aside {
        grid-template-columns: minmax(0, 1fr) 340px;
        align-items: start;
    }

    .sticky-side {
        position: sticky;
        top: 92px;
    }

    .section {
        padding: 58px 0;
    }

    .page-hero {
        padding: 68px 0 34px;
    }
}