:root {
    --web-ink: #182033;
    --web-muted: #667085;
    --web-line: #e8edf5;
    --web-blue: #155eef;
    --web-blue-deep: #0b3b93;
    --web-bg: #f6f8fc;
    --web-card: #ffffff;
}

* {
    box-sizing: border-box;
}

html,
body {
    min-height: 100%;
    margin: 0;
}

body {
    color: var(--web-ink);
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--web-bg);
}

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

.web-header {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    height: 72px;
    padding: 0 min(6vw, 72px);
    border-bottom: 1px solid rgba(232, 237, 245, .86);
    background: rgba(255, 255, 255, .88);
    backdrop-filter: blur(16px);
}

.web-brand,
.web-nav {
    display: flex;
    align-items: center;
}

.web-brand {
    gap: 10px;
    font-size: 17px;
    font-weight: 800;
}

.web-brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    color: #fff;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--web-blue), #0f172a);
}

.web-nav {
    gap: 6px;
    color: #475467;
    font-size: 14px;
}

.web-nav a {
    padding: 9px 12px;
    border-radius: 999px;
}

.web-nav a:hover,
.web-nav a.is-active {
    color: var(--web-blue);
    background: #edf4ff;
}

.web-nav .web-nav-action {
    margin-left: 8px;
    color: #fff;
    background: var(--web-blue);
}

.web-section {
    width: min(1120px, calc(100% - 40px));
    margin: 0 auto;
}

.web-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 28px;
    align-items: center;
    padding: 72px 0 44px;
}

.web-kicker {
    display: inline-flex;
    align-items: center;
    height: 28px;
    padding: 0 10px;
    color: var(--web-blue);
    font-size: 13px;
    font-weight: 700;
    border: 1px solid #c7dcff;
    border-radius: 999px;
    background: #edf4ff;
}

.web-hero h1,
.web-page-title h1 {
    margin: 18px 0 0;
    color: var(--web-ink);
    font-size: clamp(34px, 5vw, 58px);
    line-height: 1.08;
    letter-spacing: -1.6px;
}

.web-hero p,
.web-page-title p {
    max-width: 720px;
    margin: 20px 0 0;
    color: var(--web-muted);
    font-size: 16px;
    line-height: 1.8;
}

.web-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.web-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 42px;
    padding: 0 18px;
    border: 1px solid var(--web-line);
    border-radius: 999px;
    background: #fff;
    font-size: 14px;
    font-weight: 700;
}

.web-btn-primary {
    color: #fff;
    border-color: var(--web-blue);
    background: var(--web-blue);
}

.web-hero-card {
    min-height: 310px;
    padding: 24px;
    border: 1px solid var(--web-line);
    border-radius: 28px;
    background:
        radial-gradient(circle at 20% 20%, rgba(21, 94, 239, .22), transparent 34%),
        linear-gradient(145deg, #fff, #eef4ff);
    box-shadow: 0 24px 60px rgba(21, 94, 239, .16);
}

.web-hero-card strong {
    display: block;
    margin-top: 120px;
    color: var(--web-blue-deep);
    font-size: 42px;
}

.web-hero-card span {
    display: block;
    margin-top: 8px;
    color: var(--web-muted);
}

.web-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    padding: 24px 0 72px;
}

.web-card {
    padding: 22px;
    border: 1px solid var(--web-line);
    border-radius: 22px;
    background: var(--web-card);
    box-shadow: 0 14px 36px rgba(24, 32, 51, .06);
}

.web-card h3 {
    margin: 0;
    color: var(--web-ink);
    font-size: 18px;
}

.web-card p,
.web-card li {
    color: var(--web-muted);
    font-size: 14px;
    line-height: 1.8;
}

.web-page-title {
    padding: 62px 0 28px;
}

.web-content {
    padding-bottom: 72px;
}

.web-content-card {
    padding: 28px;
    border: 1px solid var(--web-line);
    border-radius: 24px;
    background: #fff;
}

.web-content-card h2 {
    margin: 0 0 14px;
}

.web-content-card p {
    color: var(--web-muted);
    line-height: 1.9;
}

.web-doc {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 22px;
    padding-bottom: 72px;
}

.web-doc-nav,
.web-doc-body {
    border: 1px solid var(--web-line);
    border-radius: 22px;
    background: #fff;
}

.web-doc-nav {
    padding: 18px;
    align-self: start;
}

.web-doc-nav a {
    display: block;
    padding: 10px 12px;
    color: var(--web-muted);
    border-radius: 12px;
}

.web-doc-nav a.is-active {
    color: var(--web-blue);
    background: #edf4ff;
}

.web-doc-body {
    padding: 28px;
}

.web-code {
    display: block;
    padding: 14px 16px;
    overflow-x: auto;
    color: #dbeafe;
    border-radius: 14px;
    background: #0f172a;
}

.web-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 26px min(6vw, 72px);
    color: #667085;
    border-top: 1px solid var(--web-line);
    background: #fff;
}

.web-footer strong {
    display: block;
    color: var(--web-ink);
}

.web-footer-links {
    display: flex;
    gap: 14px;
}

@media (max-width: 860px) {
    .web-header {
        position: static;
        height: auto;
        padding: 18px 20px;
        align-items: flex-start;
        flex-direction: column;
    }

    .web-nav {
        flex-wrap: wrap;
    }

    .web-hero,
    .web-grid,
    .web-doc {
        grid-template-columns: 1fr;
    }

    .web-footer {
        align-items: flex-start;
        flex-direction: column;
    }
}