:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #eff6ff;
    --ink: #0f172a;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --bg: #f8fafc;
    --card: #ffffff;
    --border: #e2e8f0;
    --success: #16a34a;
    --warning: #d97706;
    --danger: #dc2626;
    --radius: 14px;
    --shadow: 0 1px 3px rgba(15,23,42,.06), 0 8px 24px rgba(15,23,42,.06);
    --shadow-sm: 0 1px 2px rgba(15,23,42,.06);
    --header-h: 64px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 20px; border-radius: 10px; border: 1px solid transparent;
    font-size: 14px; font-weight: 600; cursor: pointer; transition: .15s;
    background: var(--primary); color: #fff;
}
.btn:hover { background: var(--primary-dark); }
.btn.ghost { background: #fff; color: var(--primary); border-color: var(--border); }
.btn.ghost:hover { background: var(--primary-light); }
.btn.lg { padding: 13px 28px; font-size: 15px; }
.btn.sm { padding: 6px 12px; font-size: 13px; }
.btn.danger { background: var(--danger); }
.btn.danger:hover { background: #b91c1c; }
.text-primary { color: var(--primary); }
.muted { color: var(--gray); }
.center { text-align: center; }

/* ---------- Header ---------- */
.site-header {
    position: sticky; top: 0; z-index: 50; height: var(--header-h);
    background: rgba(255,255,255,.85); backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}
.site-header .container { display: flex; align-items: center; height: 100%; gap: 28px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; letter-spacing: .3px; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.nav { display: flex; gap: 6px; margin-left: 8px; }
.nav a { padding: 8px 14px; border-radius: 8px; font-size: 14px; font-weight: 500; color: var(--gray); }
.nav a:hover, .nav a.active { color: var(--primary); background: var(--primary-light); }
.header-right { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.lang-switch { display: flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.lang-switch button { border: none; background: #fff; padding: 6px 10px; font-size: 12px; cursor: pointer; color: var(--gray); }
.lang-switch button.active { background: var(--primary); color: #fff; }
.doc-version {
    display: inline-flex; align-items: center; padding: 5px 10px;
    font-size: 12px; font-weight: 600; color: var(--primary);
    background: var(--primary-light); border: 1px solid var(--primary);
    border-radius: 8px; white-space: nowrap;
}

/* ---------- Hero ---------- */
.hero { padding: 80px 0 60px; background: linear-gradient(180deg, #fff 0%, var(--bg) 100%); }
.hero h1 { font-size: 46px; line-height: 1.15; font-weight: 800; letter-spacing: -.5px; }
.hero .sub { font-size: 18px; color: var(--gray); margin: 20px 0 32px; max-width: 640px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 56px; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-sm); }
.stat .num { font-size: 30px; font-weight: 800; color: var(--primary); }
.stat .label { color: var(--gray); font-size: 13px; margin-top: 4px; }

/* ---------- Sections ---------- */
.section { padding: 64px 0; }
.section h2 { font-size: 30px; font-weight: 800; letter-spacing: -.3px; }
.section .lead { color: var(--gray); margin: 12px 0 36px; font-size: 16px; }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); transition: .2s; }
.feature:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.feature .ico { width: 46px; height: 46px; border-radius: 12px; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 16px; }
.feature h3 { font-size: 18px; margin-bottom: 8px; }
.feature p { color: var(--gray); font-size: 14px; }

/* ---------- Docs layout ---------- */
.docs-layout { display: grid; grid-template-columns: 300px 1fr; gap: 28px; padding: 28px 0 60px; align-items: start; }
.docs-side { position: sticky; top: calc(var(--header-h) + 16px); max-height: calc(100vh - var(--header-h) - 40px); overflow: auto; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow-sm); }
.docs-search { width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 9px; margin-bottom: 12px; font-size: 14px; outline: none; }
.docs-search:focus { border-color: var(--primary); }
.cat-group { margin-bottom: 6px; }
.cat-group > .cat-title { font-weight: 700; font-size: 13px; color: var(--ink); padding: 8px 8px 4px; display: flex; justify-content: space-between; }
.cat-group > .cat-title .cnt { color: var(--gray-light); font-weight: 500; }
.cat-sub > .cat-sub-title { padding: 5px 8px 5px 18px; font-size: 13px; color: var(--gray); cursor: pointer; }
.cat-sub > .cat-sub-title:hover { color: var(--primary); }

/* Tree directory */
.tree-node { margin: 0; }
.tree-title { display: flex; align-items: center; gap: 6px; padding: 6px 8px; border-radius: 8px; font-size: 13.5px; font-weight: 600; color: var(--ink); cursor: pointer; user-select: none; }
.tree-title:hover { background: var(--primary-light); }
.tree-caret { font-size: 11px; color: var(--gray); width: 14px; text-align: center; transition: transform .15s; }
.tree-node.open > .tree-title .tree-caret { transform: rotate(90deg); }
.tree-caret-spacer { display: inline-block; width: 14px; }
.tree-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tree-cnt { margin-left: auto; color: var(--gray-light); font-size: 11px; font-weight: 500; }
.tree-body { display: none; }
.tree-node.open > .tree-body { display: block; }
.tree-node .tree-body .tree-node { margin-left: 4px; }

/* API tester */
.api-tester { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 16px; margin-bottom: 18px; }
.tester-row { display: flex; gap: 8px; margin-bottom: 12px; }
.tester-method { padding: 9px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); font-weight: 600; color: var(--ink); }
.tester-url { flex: 1; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; color: var(--ink); background: var(--bg); }
.tester-env { padding: 9px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); font-weight: 600; color: var(--ink); white-space: nowrap; }
.tester-base { flex: 1; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; color: var(--ink); background: var(--bg); }
.tester-auth { align-items: center; }
.tester-auth .tester-base { flex: 1; min-width: 0; }
.tester-auth .btn.ghost { white-space: nowrap; padding: 9px 12px; }
.tester-url:focus, .tester-area:focus, .tester-base:focus { outline: 2px solid var(--primary); border-color: var(--primary); }
.tester-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.tester-label { display: block; font-size: 12px; color: var(--gray); margin-bottom: 6px; }
.tester-area { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; color: var(--ink); background: var(--bg); resize: vertical; }
.tester-actions { display: flex; align-items: center; gap: 14px; margin: 14px 0 4px; flex-wrap: wrap; }
.tester-hint { font-size: 12px; color: var(--gray-light); }
.tester-result { margin-top: 14px; border-top: 1px dashed var(--border); padding-top: 14px; }
.tester-meta { font-size: 13px; color: var(--gray); margin-bottom: 10px; }
.s-ok { color: #16a34a; } .s-warn { color: #d97706; } .s-err { color: #dc2626; }

/* 参数字段输入 */
.tester-fields { display: flex; flex-direction: column; gap: 12px; max-height: 320px; overflow: auto; padding-right: 4px; }
.tester-field { display: flex; flex-direction: column; gap: 4px; }
.tester-field-label { font-size: 13px; font-weight: 600; color: var(--ink); display: flex; align-items: center; gap: 6px; }
.tester-field-label .req { color: #ef4444; font-weight: 700; }
.tester-field-type { font-size: 11px; font-weight: 500; color: var(--gray-light); background: var(--bg); border: 1px solid var(--border); border-radius: 5px; padding: 1px 6px; }
.tester-field-input { width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; color: var(--ink); background: var(--bg); font-family: inherit; }
.tester-field-input:focus { outline: 2px solid var(--primary); border-color: var(--primary); }
.tester-field-desc { font-size: 11px; color: var(--gray-light); }

@media (max-width: 768px) { .tester-grid { grid-template-columns: 1fr; } .tester-row { flex-direction: column; } }
.doc-item { padding: 6px 10px; margin: 2px 0; border-radius: 8px; cursor: pointer; font-size: 13.5px; display: flex; gap: 8px; align-items: center; }
.doc-item:hover { background: var(--primary-light); }
.doc-item.active { background: var(--primary); color: #fff; }
.doc-item .m { font-size: 10px; font-weight: 700; padding: 1px 5px; border-radius: 4px; background: #e2e8f0; color: #475569; }
.doc-item.active .m { background: rgba(255,255,255,.25); color: #fff; }
.method-GET { background:#dcfce7; color:#15803d; }
.method-POST { background:#dbeafe; color:#1d4ed8; }
.method-PUT { background:#fef9c3; color:#a16207; }
.method-DELETE { background:#fee2e2; color:#b91c1c; }
.method-struct { background:#ede9fe; color:#6d28d9; }
/* 数据结构（字段说明）差异化展示：紫色强调、聚焦字段表、无在线测试面板 */
.doc-detail-struct { background: linear-gradient(180deg,#faf8ff 0%, var(--card) 120px); border: 1px solid #e9e1fb; border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow-sm); min-height: 400px; }
.doc-detail-struct h1 { font-size: 26px; margin-bottom: 8px; color: #5b21b6; }
.doc-detail-struct .doc-path--struct { background: #6d28d9; color: #fff; }
.doc-detail-struct .doc-section-title { color: #6d28d9; border-bottom-color: #e9e1fb; }
.doc-detail-struct table.params th { background: #f5f0ff; }
.doc-detail-struct table.params code { background: #ede9fe; color: #5b21b6; }
.struct-note { margin-top: 18px; padding: 12px 16px; background: #f5f0ff; border: 1px solid #e9e1fb; border-left: 3px solid #6d28d9; border-radius: 8px; color: #5b21b6; font-size: 13px; line-height: 1.6; }
/* 接口页「关联数据结构」区块内的表格样式 */
.related-struct { margin-top: 6px; }
.related-struct table { width: 100%; border-collapse: collapse; font-size: 13.5px; margin: 4px 0 14px; }
.related-struct table th { background: #f5f0ff; text-align: left; padding: 9px 12px; border: 1px solid #e9e1fb; font-weight: 600; }
.related-struct table td { padding: 9px 12px; border: 1px solid #e9e1fb; vertical-align: top; }
.related-struct table code { background: #ede9fe; color: #5b21b6; padding: 1px 6px; border-radius: 5px; font-size: 12.5px; }
.related-struct table td a.struct-link { color: #6d28d9; font-weight: 600; text-decoration: none; border-bottom: 1px dashed #a78bfa; }
.related-struct table td a.struct-link:hover { color: #4c1d95; border-bottom-color: #6d28d9; }
/* 结构页内由 markdown 渲染的字段表，统一为与接口参数表一致的整齐样式 */
.doc-detail-struct table { width: 100%; border-collapse: collapse; font-size: 13.5px; margin: 8px 0; }
.doc-detail-struct table th { background: #f5f0ff; text-align: left; padding: 9px 12px; border: 1px solid #e9e1fb; font-weight: 600; }
.doc-detail-struct table td { padding: 9px 12px; border: 1px solid #e9e1fb; vertical-align: top; }
.doc-detail-struct table code { background: #ede9fe; color: #5b21b6; padding: 1px 6px; border-radius: 5px; font-size: 12.5px; }
.doc-detail-struct h2 { font-size: 16px; margin: 18px 0 8px; color: #5b21b6; }

/* ---------- Doc detail ---------- */
.doc-detail { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow-sm); min-height: 400px; }
.doc-detail h1 { font-size: 26px; margin-bottom: 8px; }
.doc-path { display: flex; align-items: center; gap: 10px; background: #0f172a; color: #e2e8f0; padding: 12px 16px; border-radius: 10px; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 14px; margin: 16px 0 8px; word-break: break-all; }
.doc-desc { color: var(--gray); margin-bottom: 18px; white-space: pre-line; line-height: 1.7; }
.doc-section-title { font-size: 16px; font-weight: 700; margin: 26px 0 10px; padding-bottom: 6px; border-bottom: 2px solid var(--border); }
table.params { width: 100%; border-collapse: collapse; font-size: 13.5px; margin: 8px 0; }
table.params th { background: var(--bg); text-align: left; padding: 9px 12px; border: 1px solid var(--border); font-weight: 600; }
table.params td { padding: 9px 12px; border: 1px solid var(--border); vertical-align: top; }
table.params code { background: var(--primary-light); color: var(--primary-dark); padding: 1px 6px; border-radius: 5px; font-size: 12.5px; }
pre.code { background: #0f172a; color: #e2e8f0; padding: 16px; border-radius: 10px; overflow: auto; font-size: 13px; line-height: 1.55; white-space: pre-wrap; word-break: break-word; overflow-wrap: break-word; }
.markdown-body h1, .markdown-body h2, .markdown-body h3 { margin: 18px 0 10px; }
.markdown-body p { margin: 8px 0; }
.markdown-body code { background: #f1f5f9; padding: 1px 6px; border-radius: 5px; font-size: 13px; }
.markdown-body pre { background: #0f172a; color: #e2e8f0; padding: 14px; border-radius: 10px; overflow: auto; }
.markdown-body pre code { background: transparent; padding: 0; color: #e2e8f0; }
.markdown-body table { border-collapse: collapse; width: 100%; margin: 10px 0; }
.markdown-body th, .markdown-body td { border: 1px solid var(--border); padding: 8px 10px; }
.markdown-body blockquote { border-left: 3px solid var(--primary); padding: 4px 14px; color: var(--gray); background: var(--primary-light); border-radius: 0 8px 8px 0; margin: 10px 0; }
.empty { color: var(--gray-light); text-align: center; padding: 80px 0; }

/* ---------- Forms ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 13px; font-weight: 600; }
.field input, .field textarea, .field select {
    padding: 10px 12px; border: 1px solid var(--border); border-radius: 9px; font-size: 14px; font-family: inherit; outline: none; background: #fff;
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--primary); }
.field textarea { min-height: 120px; resize: vertical; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); }
.contact-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: start; }
.contact-info p { color: var(--gray); margin: 8px 0; }
.alert { padding: 12px 16px; border-radius: 10px; margin: 14px 0; font-size: 14px; }
.alert.success { background: #dcfce7; color: #15803d; }
.alert.error { background: #fee2e2; color: #b91c1c; }

/* ---------- Footer ---------- */
.site-footer { background: #0f172a; color: #cbd5e1; padding: 48px 0 28px; margin-top: 40px; }
.site-footer a { color: #93c5fd; }
.site-footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 28px; }
.site-footer h4 { color: #fff; margin-bottom: 14px; font-size: 15px; }
.site-footer p, .site-footer li { font-size: 13.5px; line-height: 2; list-style: none; }
.site-footer .bottom { border-top: 1px solid #1e293b; margin-top: 32px; padding-top: 18px; font-size: 13px; color: #64748b; text-align: center; }

/* ---------- Admin ---------- */
.admin-body { display: grid; grid-template-columns: 232px 1fr; min-height: 100vh; }
.admin-side { background: #0f172a; color: #cbd5e1; display: flex; flex-direction: column; }
.admin-side .brand { padding: 18px 20px; color: #fff; border-bottom: 1px solid #1e293b; }
.admin-side .menu { padding: 10px; overflow: auto; flex: 1; }
.admin-side .menu-group { font-size: 11px; color: #64748b; text-transform: uppercase; letter-spacing: .08em; padding: 14px 12px 6px; }
.admin-side .menu-item { display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: 8px; cursor: pointer; font-size: 14px; color: #cbd5e1; }
.admin-side .menu-item:hover { background: #1e293b; color: #fff; }
.admin-side .menu-item.active { background: var(--primary); color: #fff; }
.admin-side .menu-sub { padding-left: 26px; font-size: 13px; }
.admin-main { display: flex; flex-direction: column; background: var(--bg); }
.admin-top { height: 60px; background: #fff; border-bottom: 1px solid var(--border); display: flex; align-items: center; padding: 0 24px; gap: 14px; }
.admin-top .title { font-weight: 700; font-size: 17px; }
.admin-top .spacer { margin-left: auto; }
.admin-content { padding: 24px; overflow: auto; }
.admin-login { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #1e3a8a, #0f172a); }
.login-card { background: #fff; border-radius: 16px; padding: 40px; width: 380px; box-shadow: var(--shadow); }
.login-card h2 { text-align: center; margin-bottom: 6px; }
.login-card .sub { text-align: center; color: var(--gray); margin-bottom: 24px; font-size: 14px; }
.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-bottom: 22px; }
.kpi { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow-sm); position: relative; overflow: hidden; }
.kpi .v { font-size: 28px; font-weight: 800; }
.kpi .l { color: var(--gray); font-size: 13px; }
.kpi .ic { position: absolute; right: 16px; top: 16px; font-size: 22px; opacity: .15; }
.chart-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.chart-box { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow-sm); }
.chart-box.full { grid-column: 1 / -1; }
.chart-box h3 { font-size: 15px; margin-bottom: 12px; }
.chart { width: 100%; height: 300px; }
.chart.tall { height: 360px; }
table.data { width: 100%; border-collapse: collapse; background: #fff; font-size: 13.5px; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); }
table.data th { background: var(--bg); text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--border); font-weight: 600; }
table.data td { padding: 11px 14px; border-bottom: 1px solid var(--border); }
table.data tr:hover td { background: #f8fafc; }
.badge { display: inline-block; padding: 2px 9px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.badge.green { background: #dcfce7; color: #15803d; }
.badge.red { background: #fee2e2; color: #b91c1c; }
.badge.gray { background: #f1f5f9; color: #475569; }
.tag { display:inline-block; padding:2px 8px; border-radius:6px; background: var(--primary-light); color: var(--primary-dark); font-size: 12px; margin: 2px; }
.modal-mask { position: fixed; inset: 0; background: rgba(15,23,42,.45); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal { background: #fff; border-radius: 14px; padding: 26px; width: 520px; max-width: 92vw; max-height: 88vh; overflow: auto; box-shadow: var(--shadow); }
.modal h3 { margin-bottom: 18px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }
.perm-tree { max-height: 320px; overflow: auto; border: 1px solid var(--border); border-radius: 10px; padding: 12px; }
.perm-tree label { display: block; padding: 5px 0; font-size: 14px; cursor: pointer; }
.pagination { display: flex; gap: 8px; justify-content: flex-end; margin-top: 14px; }
.row-actions { display: flex; gap: 6px; }

@media (max-width: 900px) {
    .features, .stats, .kpi-grid { grid-template-columns: 1fr 1fr; }
    .docs-layout, .contact-wrap, .form-grid { grid-template-columns: 1fr; }
    .chart-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 34px; }
    .admin-body { grid-template-columns: 1fr; }
    .admin-side { display: none; }
}