:root {
    color-scheme: light;
    --doc-bg: #f5f5f7;
    --doc-surface: #ffffff;
    --doc-surface-soft: #fbfbfd;
    --doc-text: #1d1d1f;
    --doc-muted: #6e6e73;
    --doc-border: #d2d2d7;
    --doc-border-soft: #ececf0;
    --doc-blue: #0071e3;
    --doc-green: #248a3d;
    --doc-orange: #b46b00;
    --doc-red: #d70015;
    --doc-shadow: 0 16px 44px rgba(0, 0, 0, 0.08);
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    background: var(--doc-bg);
    -webkit-text-size-adjust: 100%;
}

body {
    min-height: 100vh;
    margin: 0;
    background: linear-gradient(180deg, #ffffff 0%, var(--doc-bg) 18rem);
    color: var(--doc-text);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.72;
    letter-spacing: 0;
}

a {
    color: var(--doc-blue);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

strong {
    font-weight: 650;
}

p,
li,
td,
th {
    overflow-wrap: anywhere;
    word-break: break-word;
}

.doc-page {
    width: min(100%, 980px);
    margin: 0 auto;
    padding: 48px 22px 72px;
}

.doc-hero {
    padding: 16px 0 30px;
}

.doc-kicker {
    margin: 0 0 12px;
    color: var(--doc-blue);
    font-size: 0.88rem;
    font-weight: 650;
}

h1 {
    max-width: 820px;
    margin: 0;
    color: var(--doc-text);
    font-size: clamp(2.1rem, 6vw, 4rem);
    line-height: 1.05;
    font-weight: 720;
    letter-spacing: 0;
}

.doc-subtitle {
    max-width: 760px;
    margin: 18px 0 0;
    color: var(--doc-muted);
    font-size: clamp(1.05rem, 2.6vw, 1.28rem);
    line-height: 1.58;
}

.doc-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 22px;
}

.doc-pill,
.tag,
span[class^="tag-"],
span[class*=" tag-"] {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    padding: 3px 10px;
    border-radius: 999px;
    background: #f2f2f7;
    color: var(--doc-text);
    font-size: 0.84rem;
    font-weight: 650;
    white-space: nowrap;
}

.doc-pill-blue,
.tag-blue {
    background: rgba(0, 113, 227, 0.12);
    color: var(--doc-blue);
}

.doc-pill-green,
.tag-green {
    background: rgba(52, 199, 89, 0.14);
    color: var(--doc-green);
}

.doc-pill-orange,
.tag-orange {
    background: rgba(255, 149, 0, 0.16);
    color: var(--doc-orange);
}

.doc-pill-red,
.tag-red {
    background: rgba(255, 59, 48, 0.13);
    color: var(--doc-red);
}

.tag-gray {
    color: var(--doc-muted);
}

.doc-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
}

.doc-card {
    border: 1px solid var(--doc-border-soft);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.86);
    box-shadow: var(--doc-shadow);
}

.doc-section {
    padding: 28px;
}

.doc-section + .doc-section {
    margin-top: 18px;
}

h2 {
    margin: 0 0 14px;
    color: var(--doc-text);
    font-size: 1.48rem;
    line-height: 1.26;
    font-weight: 680;
    letter-spacing: 0;
}

h3 {
    margin: 24px 0 8px;
    color: var(--doc-text);
    font-size: 1.08rem;
    line-height: 1.36;
    font-weight: 650;
    letter-spacing: 0;
}

p {
    margin: 10px 0;
}

ul,
ol {
    margin: 12px 0 0;
    padding-left: 1.35em;
}

li {
    margin: 7px 0;
}

.doc-lede {
    margin-top: 0;
    color: var(--doc-muted);
}

.doc-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-top: 14px;
}

.doc-mini {
    padding: 16px;
    border: 1px solid var(--doc-border-soft);
    border-radius: 8px;
    background: var(--doc-surface-soft);
}

.doc-mini strong {
    display: block;
    margin-bottom: 4px;
}

.doc-mini p {
    margin: 0;
    color: var(--doc-muted);
    font-size: 0.95rem;
}

.doc-steps {
    counter-reset: step;
    list-style: none;
    padding: 0;
}

.doc-steps li {
    position: relative;
    min-height: 36px;
    margin: 12px 0;
    padding-left: 48px;
}

.doc-steps li::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--doc-blue);
    color: #fff;
    font-size: 0.92rem;
    font-weight: 700;
    line-height: 30px;
    text-align: center;
}

.doc-callout,
blockquote,
.note,
.tip,
.warning,
.important,
.version-box {
    margin: 18px 0;
    padding: 16px 18px;
    border: 1px solid rgba(0, 113, 227, 0.18);
    border-radius: 8px;
    background: rgba(0, 113, 227, 0.07);
    color: var(--doc-text);
}

.doc-callout.warning,
.note-warn,
.warning,
.important,
.version-box {
    border-color: rgba(255, 149, 0, 0.24);
    background: rgba(255, 149, 0, 0.1);
}

.doc-callout.success,
.tip {
    border-color: rgba(52, 199, 89, 0.22);
    background: rgba(52, 199, 89, 0.1);
}

.doc-table {
    width: 100%;
    margin-top: 14px;
    overflow-x: auto;
    border: 1px solid var(--doc-border-soft);
    border-radius: 8px;
    background: var(--doc-surface);
}

table {
    width: 100%;
    min-width: 640px;
    border-collapse: separate;
    border-spacing: 0;
}

th,
td {
    padding: 13px 14px;
    border-bottom: 1px solid var(--doc-border-soft);
    text-align: left;
    vertical-align: top;
    font-size: 0.95rem;
}

th {
    color: var(--doc-muted);
    background: var(--doc-surface-soft);
    font-weight: 650;
}

tr:last-child td {
    border-bottom: 0;
}

.doc-feedback {
    margin-top: 22px;
    padding-top: 18px;
    border-top: 1px solid var(--doc-border-soft);
}

.doc-feedback h2 {
    font-size: 1.2rem;
}

code,
pre {
    border-radius: 8px;
    background: #f2f2f7;
    color: var(--doc-text);
    font-family: "SF Mono", Menlo, Consolas, monospace;
}

code {
    padding: 2px 6px;
}

pre {
    padding: 14px;
    overflow-x: auto;
}

img,
video {
    max-width: 100%;
    height: auto;
}

hr {
    height: 1px;
    margin: 34px 0;
    border: 0;
    background: var(--doc-border-soft);
}

.doc-legal {
    background: var(--doc-surface);
}

.doc-legal h1 {
    margin: 0 0 14px;
    font-size: 1.85rem;
    line-height: 1.22;
}

.doc-legal h2 {
    margin-top: 28px;
    padding-top: 18px;
    border-top: 1px solid var(--doc-border-soft);
}

.doc-legal h3,
.doc-legal h4 {
    margin-top: 18px;
}

.doc-legal .meta {
    margin: 0 0 18px;
    color: var(--doc-muted);
    text-align: left;
}

@media (max-width: 720px) {
    .doc-page {
        padding: 34px 16px 52px;
    }

    .doc-section {
        padding: 21px 18px;
    }

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

    th,
    td {
        padding: 11px 12px;
        font-size: 0.9rem;
    }
}