/* 纯手写 CSS，零外部依赖（不引 CDN / 字体，避免国内访问拉字体卡顿） */

:root {
  --bg: #ffffff;
  --fg: #1b1d1f;
  --muted: #5c6469;
  --card: #f7f8fa;
  --line: #e6e8eb;
  --accent: #2f6fed;
  --accent-fg: #ffffff;
  --nav-bg: rgba(255, 255, 255, 0.88);
  --line-hover: #c3cfe8;
  --radius: 12px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101214;
    --fg: #e9ebee;
    --muted: #9aa2a9;
    --card: #171a1d;
    --line: #262a2e;
    --accent: #7aa5ff;
    --accent-fg: #0d1013;
    --nav-bg: rgba(16, 18, 20, 0.88);
    --line-hover: #3a4759;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC",
    sans-serif;
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  width: min(760px, 100% - 2.5rem);
  margin-inline: auto;
}

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

a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-fg);
  padding: 0.5rem 1rem;
  border-radius: 0 0 var(--radius) 0;
  z-index: 10;
}

.skip:focus {
  left: 0;
}

/* ---------- 顶部导航 ---------- */

.nav {
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: var(--nav-bg);
  backdrop-filter: saturate(180%) blur(8px);
}

@media (prefers-reduced-motion: no-preference) {
  .nav {
    transition: background 0.2s ease;
  }
}

.nav-in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.brand {
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--fg);
}

.menu {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.94rem;
}

.menu a {
  color: var(--muted);
}

.menu a:hover {
  color: var(--fg);
  text-decoration: none;
}

/* ---------- Hero ---------- */

.hero {
  padding: clamp(3.5rem, 12vh, 7rem) 0 clamp(3rem, 8vh, 5rem);
}

.kicker {
  margin: 0 0 0.75rem;
  color: var(--muted);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.1rem, 6vw, 3.2rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.tagline {
  margin: 0 0 2rem;
  max-width: 34rem;
  color: var(--muted);
  font-size: clamp(1.02rem, 2.5vw, 1.15rem);
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.links a {
  display: inline-block;
  padding: 0.5rem 1.05rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  color: var(--fg);
  font-size: 0.94rem;
}

@media (prefers-reduced-motion: no-preference) {
  .links a {
    transition: border-color 0.18s ease, transform 0.18s ease;
  }
}

.links a:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
  transform: translateY(-1px);
}

/* ---------- 正文区块 ---------- */

section {
  padding: clamp(2.5rem, 7vh, 4rem) 0;
  border-top: 1px solid var(--line);
}

h2 {
  margin: 0 0 1.25rem;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
}

section p {
  margin: 0 0 1rem;
  max-width: 42rem;
}

/* ---------- 标签 ---------- */

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.tags li {
  padding: 0.2rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
}

.tags.sm {
  margin-top: 1rem;
  font-size: 0.8rem;
}

/* ---------- 项目卡片 ---------- */

.grid {
  display: grid;
  gap: 1.1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  display: flex;
  flex-direction: column;
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

@media (prefers-reduced-motion: no-preference) {
  .card {
    transition: border-color 0.2s ease, transform 0.2s ease;
  }
}

.card:hover {
  border-color: var(--line-hover);
  transform: translateY(-2px);
}

.card h3 {
  margin: 0 0 0.15rem;
  font-size: 1.05rem;
}

.card-sub {
  margin: 0 0 0.7rem;
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}

.card p {
  font-size: 0.94rem;
  margin-bottom: 0;
}

.card .tags {
  margin-top: auto;
  padding-top: 1rem;
}

.more {
  margin-top: 1rem;
  font-size: 0.9rem;
}

/* ---------- 联系 ---------- */

.contact-line {
  font-size: 1.1rem;
  font-weight: 500;
}

/* ---------- 页脚 ---------- */

.footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0 3rem;
  color: var(--muted);
  font-size: 0.86rem;
}

.footer p {
  margin: 0;
}

/* ---------- 小屏 ---------- */

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .menu {
    gap: 0.9rem;
  }

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

/* ==================== 状态面板 ==================== */

.status-head {
  padding: clamp(2rem, 6vh, 3.5rem) 0 1rem;
}

.status-head h1 {
  margin-bottom: 0.6rem;
}

.status-sub {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.dot-sep {
  opacity: 0.45;
}

.btn-quiet {
  margin-left: 0.3rem;
  padding: 0.18rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  color: var(--muted);
  font: inherit;
  font-size: 0.82rem;
  cursor: pointer;
}

.btn-quiet:hover {
  color: var(--fg);
  border-color: var(--line-hover);
}

.banner {
  margin: 0.5rem 0 1.2rem;
  padding: 0.7rem 1rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--muted);
  border-radius: 8px;
  background: var(--card);
  font-size: 0.9rem;
}

.banner.warn { border-left-color: #d99a1f; }
.banner.bad { border-left-color: #d64545; }

/* ---- 概览卡片 ---- */

.stat-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(215px, 1fr));
  margin: 1.5rem 0 0;
}

.stat-card {
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.stat-card h3 {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.03em;
}

.stat-main {
  margin: 0 0 0.3rem;
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.stat-main.small {
  font-size: 1.05rem;
}

.unit {
  margin-left: 0.15rem;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 400;
}

.stat-sub2 {
  margin: 0 0 0.55rem;
  color: var(--muted);
  font-size: 0.84rem;
}

.muted { color: var(--muted); }

.bar {
  height: 5px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--line);
}

.bar > i {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: var(--accent);
}

@media (prefers-reduced-motion: no-preference) {
  .bar > i { transition: width 0.4s ease, background 0.3s ease; }
}

.bar > i.warn { background: #d99a1f; }
.bar > i.crit { background: #d64545; }

.text-warn { color: #d99a1f; }
.text-bad { color: #d64545; }

/* ---- 区块 ---- */

.block {
  padding: clamp(1.8rem, 5vh, 2.6rem) 0;
  border-top: 1px solid var(--line);
}

.block h2 {
  margin: 0 0 0.7rem;
  font-size: 1.15rem;
}

.small-note {
  margin: -0.3rem 0 1rem;
  font-size: 0.82rem;
}

/* ---- 键值表 ---- */

.kv {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 0.45rem 1rem;
  margin: 0;
  font-size: 0.92rem;
}

.kv dt {
  color: var(--muted);
}

.kv dd {
  margin: 0;
  word-break: break-all;
}

/* ---- 表格 ---- */

.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.tbl {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.tbl th,
.tbl td {
  padding: 0.6rem 0.7rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.tbl th {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 500;
  white-space: nowrap;
}

.tbl code {
  font-size: 0.78rem;
}

.cell-note {
  color: var(--muted);
  font-size: 0.84rem;
}

.row-risky td:first-child {
  box-shadow: inset 3px 0 0 #d64545;
  padding-left: 0.9rem;
}

/* ---- 徽标 ---- */

.badge {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  font-size: 0.76rem;
  line-height: 1.5;
  white-space: nowrap;
}

.badge.ok { background: rgba(45, 160, 90, 0.14); color: #2da05a; }
.badge.idle { background: var(--line); color: var(--muted); }
.badge.warn { background: rgba(217, 154, 31, 0.16); color: #b8811a; }
.badge.bad { background: rgba(214, 69, 69, 0.14); color: #cf3b3b; }

@media (prefers-color-scheme: dark) {
  .badge.ok { color: #6ed49a; }
  .badge.warn { color: #e2b455; }
  .badge.bad { color: #ef7676; }
}

/* ---- 端口 ---- */

.port-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.port {
  padding: 0.22rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.82rem;
}

.port.exposed {
  border-color: rgba(214, 69, 69, 0.4);
  color: #cf3b3b;
}

@media (prefers-color-scheme: dark) {
  .port.exposed { color: #ef7676; }
}

/* ---- 列表 ---- */

.plain-list {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.9rem;
}

.plain-list li {
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--line);
}

.plain-list li:last-child {
  border-bottom: none;
}

.mono-list li {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.8rem;
  color: var(--muted);
  word-break: break-all;
}

@media (max-width: 640px) {
  .kv {
    grid-template-columns: 5.5rem 1fr;
  }
  .stat-main {
    font-size: 1.5rem;
  }
  .tbl {
    font-size: 0.84rem;
  }
}