/* ==========================================================================
   智能座舱运行监测平台 —— 首页展示页样式
   纯本地资源，无外部字体 / CDN 依赖。
   ========================================================================== */

:root {
    --an-bg: #05080f;
    --an-bg-2: #0a1120;
    --an-panel: rgba(13, 21, 36, 0.82);
    --an-panel-solid: #0c1424;
    --an-line: #17243c;
    --an-line-soft: #101a2c;
    --an-text: #d9e5f6;
    --an-text-2: #93a6bf;
    --an-muted: #6f819a;
    --an-dim: #46566d;
    --an-cyan: #22d3ee;
    --an-blue: #3b82f6;
    --an-green: #34d399;
    --an-amber: #fbbf24;
    --an-red: #f87171;
    --an-gold: #d4a017;
    --an-gold-2: #f5d778;
    --an-mono: 'JetBrains Mono', 'SF Mono', 'PingFang SC', 'Microsoft YaHei', monospace;
    --an-sans: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--an-sans);
    background:
        radial-gradient(1100px 520px at 12% -8%, rgba(34, 211, 238, 0.10), transparent 60%),
        radial-gradient(900px 480px at 92% 4%, rgba(59, 130, 246, 0.12), transparent 62%),
        linear-gradient(180deg, var(--an-bg) 0%, var(--an-bg-2) 55%, var(--an-bg) 100%);
    background-attachment: fixed;
    color: var(--an-text);
    font-size: 14px;
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(34, 211, 238, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(34, 211, 238, 0.035) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 78%);
    -webkit-mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 78%);
}

/* ===== 顶部导航 ===== */
.an-nav {
    position: sticky;
    top: 0;
    z-index: 60;
    background: rgba(5, 8, 15, 0.86);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--an-line-soft);
}
.an-nav-inner {
    max-width: 1480px;
    margin: 0 auto;
    padding: 12px 26px;
    display: flex;
    align-items: center;
    gap: 26px;
}
.an-logo {
    display: flex;
    align-items: center;
    gap: 11px;
    text-decoration: none;
    color: inherit;
    flex: 0 0 auto;
}
.an-logo-mark {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: linear-gradient(145deg, #0e2a3d 0%, #123a52 100%);
    border: 1px solid rgba(34, 211, 238, 0.4);
    color: var(--an-cyan);
    font-family: var(--an-mono);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.5px;
    box-shadow: 0 0 18px rgba(34, 211, 238, 0.18);
}
.an-logo-text { display: flex; flex-direction: column; line-height: 1.25; }
.an-logo-text b { font-size: 15px; font-weight: 600; letter-spacing: 0.4px; }
.an-logo-text i {
    font-style: normal;
    font-size: 10px;
    letter-spacing: 1.6px;
    text-transform: uppercase;
    color: var(--an-muted);
    font-family: var(--an-mono);
}
.an-links { display: flex; gap: 22px; margin-left: 14px; }
.an-links a {
    color: var(--an-text-2);
    text-decoration: none;
    font-size: 13px;
    padding: 4px 0;
    border-bottom: 1px solid transparent;
    transition: color 0.18s, border-color 0.18s;
}
.an-links a:hover { color: var(--an-cyan); border-bottom-color: rgba(34, 211, 238, 0.5); }
.an-nav-side {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 9px;
    font-family: var(--an-mono);
    font-size: 12px;
    color: var(--an-muted);
}
/* 头部状态灯是机关的一处信号点，保持"只是状态指示"的外观，
   不加按钮样式，避免一眼看出可点 */
.an-live { display: inline-flex; align-items: center; gap: 7px; }
.an-live.signal-hit { animation: an-signal-hit 0.42s ease-out; }
@keyframes an-signal-hit {
    0%   { transform: scale(1); }
    35%  { transform: scale(1.06); text-shadow: 0 0 10px rgba(34, 211, 238, 0.6); }
    100% { transform: scale(1); }
}
.an-live-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--an-green);
    box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.55);
    animation: an-pulse 2.2s infinite;
}
@keyframes an-pulse {
    0%   { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.5); }
    70%  { box-shadow: 0 0 0 8px rgba(52, 211, 153, 0); }
    100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); }
}
.an-king-entry {
    margin-left: 10px;
    text-decoration: none;
    font-size: 12px;
    letter-spacing: 0.6px;
    color: #1a1000;
    padding: 6px 14px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--an-gold-2) 0%, var(--an-gold) 100%);
    box-shadow: 0 0 18px rgba(212, 160, 23, 0.35);
    font-weight: 700;
}
.an-king-entry:hover { filter: brightness(1.08); }
/* 机关解开后才出现：给个轻微浮现动画，别像凭空多出个按钮。
   [hidden] 显式还原，避免以后给 .an-king-entry 加 display 时把隐藏弄丢。 */
.an-king-entry[hidden] { display: none; }
.an-king-entry { animation: an-king-in 0.5s ease-out; }
@keyframes an-king-in {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: none; }
}

/* ===== 主体 ===== */
.an-main {
    max-width: 1480px;
    margin: 0 auto;
    padding: 30px 26px 10px;
}

.an-hero {
    display: flex;
    gap: 30px;
    align-items: flex-start;
    padding: 26px 28px;
    border: 1px solid var(--an-line);
    border-radius: 16px;
    background: linear-gradient(150deg, rgba(18, 30, 50, 0.9) 0%, rgba(9, 14, 25, 0.75) 100%);
    position: relative;
    overflow: hidden;
}
.an-hero::after {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 320px; height: 100%;
    background: radial-gradient(circle at 100% 0%, rgba(34, 211, 238, 0.12), transparent 70%);
    pointer-events: none;
}
.an-hero-main { flex: 1 1 auto; min-width: 0; }
.an-eyebrow {
    font-family: var(--an-mono);
    font-size: 11px;
    letter-spacing: 2.4px;
    color: var(--an-cyan);
    text-transform: uppercase;
    margin-bottom: 10px;
}
.an-title {
    font-size: 32px;
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: 1px;
    background: linear-gradient(90deg, #eaf6ff 0%, #8fd8f0 60%, #4aa8e0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.an-sub {
    margin-top: 12px;
    max-width: 720px;
    color: var(--an-text-2);
    font-size: 13.5px;
    line-height: 1.85;
}
.an-tags { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.an-tag {
    font-size: 12px;
    padding: 3px 11px;
    border-radius: 999px;
    color: #a9c7e0;
    background: rgba(34, 211, 238, 0.07);
    border: 1px solid rgba(34, 211, 238, 0.22);
}
.an-hero-meta {
    flex: 0 0 288px;
    display: flex;
    flex-direction: column;
    gap: 11px;
    padding: 16px 18px;
    border-radius: 12px;
    background: rgba(6, 11, 20, 0.62);
    border: 1px solid var(--an-line-soft);
    font-family: var(--an-mono);
    font-size: 12px;
}
.an-meta-row { display: flex; justify-content: space-between; gap: 12px; }
.an-meta-k { color: var(--an-muted); }
.an-meta-v { color: var(--an-text); text-align: right; }

/* ===== KPI ===== */
.an-kpis {
    margin-top: 18px;
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 14px;
}
.an-kpi {
    position: relative;
    padding: 15px 16px 12px;
    border: 1px solid var(--an-line);
    border-radius: 13px;
    background: var(--an-panel);
    overflow: hidden;
}
.an-kpi::before {
    content: '';
    position: absolute;
    inset: 0 auto auto 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--an-cyan), transparent 70%);
    opacity: 0.75;
}
.an-kpi-head { display: flex; align-items: center; justify-content: space-between; }
.an-kpi-label { font-size: 12px; color: var(--an-muted); letter-spacing: 0.4px; }
.an-kpi-dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--an-cyan);
    box-shadow: 0 0 8px rgba(34, 211, 238, 0.8);
}
.an-kpi-value {
    margin-top: 8px;
    display: flex;
    align-items: baseline;
    gap: 5px;
    font-family: var(--an-mono);
}
.an-kpi-value b {
    font-size: 26px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: #eaf6ff;
    font-variant-numeric: tabular-nums;
}
.an-kpi-value em { font-style: normal; font-size: 12px; color: var(--an-dim); }
.an-kpi-foot {
    margin-top: 6px;
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 11px;
    font-family: var(--an-mono);
}
.an-kpi-note { color: var(--an-dim); }
.an-delta { font-weight: 700; }
.an-delta.up { color: var(--an-green); }
.an-delta.down { color: var(--an-red); }
.an-spark { display: block; width: 100%; height: 30px; margin-top: 6px; }

/* ===== 图表栅格 ===== */
.an-grid {
    margin-top: 18px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}
.an-card {
    border: 1px solid var(--an-line);
    border-radius: 14px;
    background: var(--an-panel);
    padding: 16px 18px 14px;
    min-width: 0;
}
.an-span2 { grid-column: span 2; }
.an-span3 { grid-column: span 3; }
.an-card-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}
.an-card-head h2 { font-size: 15px; font-weight: 600; letter-spacing: 0.4px; }
.an-card-head p { font-size: 11.5px; color: var(--an-muted); margin-top: 3px; font-family: var(--an-mono); }
.an-legend { display: flex; gap: 14px; font-size: 11.5px; color: var(--an-text-2); font-family: var(--an-mono); }
.an-legend span { display: inline-flex; align-items: center; gap: 6px; }
.an-legend i { width: 9px; height: 9px; border-radius: 2px; display: inline-block; }
.an-chart { width: 100%; height: 240px; }
.an-chart-tall { height: 286px; }

/* ===== 实时事件流 ===== */
.an-stream-state {
    font-family: var(--an-mono);
    font-size: 11px;
    color: var(--an-green);
    border: 1px solid rgba(52, 211, 153, 0.3);
    background: rgba(52, 211, 153, 0.07);
    padding: 2px 10px;
    border-radius: 999px;
    white-space: nowrap;
}
.an-stream {
    list-style: none;
    max-height: 226px;
    overflow-y: auto;
    font-family: var(--an-mono);
    font-size: 12px;
    border-top: 1px solid var(--an-line-soft);
}
.an-stream li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 7px 4px;
    border-bottom: 1px solid rgba(23, 36, 60, 0.55);
    animation: an-row-in 0.35s ease;
}
@keyframes an-row-in { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
.an-stream .t { color: var(--an-dim); flex: 0 0 68px; }
.an-stream .p { color: #9fd8f2; flex: 0 0 96px; }
.an-stream .e { color: var(--an-text-2); flex: 1 1 auto; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.an-stream .lv { flex: 0 0 auto; font-size: 11px; padding: 1px 8px; border-radius: 4px; }
.an-stream .lv.info { color: var(--an-cyan); background: rgba(34, 211, 238, 0.1); }
.an-stream .lv.ok { color: var(--an-green); background: rgba(52, 211, 153, 0.1); }
.an-stream .lv.warn { color: var(--an-amber); background: rgba(251, 191, 36, 0.1); }

.an-disclaimer {
    margin-top: 16px;
    font-size: 11.5px;
    color: var(--an-dim);
    font-family: var(--an-mono);
    text-align: center;
}

/* ===== 页脚 & 备案 ===== */
.an-foot {
    max-width: 1480px;
    margin: 26px auto 0;
    padding: 22px 26px 34px;
    border-top: 1px solid var(--an-line-soft);
    text-align: center;
}
.an-foot-links { display: flex; justify-content: center; gap: 10px; font-size: 12px; }
.an-foot-links a { color: var(--an-text-2); text-decoration: none; }
.an-foot-links a:hover { color: var(--an-cyan); }
.an-foot-links .sep { color: var(--an-dim); }
.an-foot-copy { margin-top: 8px; font-size: 12px; color: var(--an-dim); font-family: var(--an-mono); }

.site-beian {
    margin-top: 14px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}
.site-beian a { text-decoration: none; }
.site-beian-no {
    font-size: 12.5px;
    color: var(--an-text-2);
    font-family: var(--an-mono);
    letter-spacing: 0.4px;
}
.site-beian-no:hover { color: var(--an-cyan); }
.site-beian-mps { font-size: 12px; color: var(--an-muted); word-break: break-all; }
.site-beian-mps:hover { color: var(--an-cyan); }

.an-version {
    margin-top: 14px;
    background: none;
    border: none;
    cursor: default;
    font-family: var(--an-mono);
    font-size: 11px;
    color: #2b3648;
    letter-spacing: 0.6px;
    padding: 2px 6px;
    transition: color 0.3s;
    -webkit-user-select: none;
    user-select: none;
}
.an-version:hover { color: #3b495f; }

/* ===== 响应式 ===== */
@media (max-width: 1280px) {
    .an-kpis { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 1024px) {
    .an-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .an-span2 { grid-column: span 2; }
    .an-span3 { grid-column: span 2; }
    .an-hero { flex-direction: column; }
    .an-hero-meta { flex: 1 1 auto; width: 100%; }
}
@media (max-width: 760px) {
    .an-nav-inner { flex-wrap: wrap; gap: 12px; padding: 10px 16px; }
    .an-links { order: 3; width: 100%; overflow-x: auto; padding-bottom: 2px; }
    .an-nav-side { font-size: 11px; }
    .an-main { padding: 20px 16px 6px; }
    .an-hero { padding: 20px 18px; }
    .an-title { font-size: 24px; }
    .an-kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
    .an-kpi-value b { font-size: 21px; }
    .an-grid { grid-template-columns: minmax(0, 1fr); gap: 10px; }
    .an-span2, .an-span3 { grid-column: span 1; }
    .an-chart, .an-chart-tall { height: 220px; }
    .an-card { padding: 14px 14px 12px; }
    .an-foot { padding: 18px 16px 28px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; }
}