:root {
  --bg: #faf9f5;
  --surface: #ffffff;
  --surface-2: #f3f1ea;
  --border: #e6e2d6;
  --text: #1f1e1d;
  --muted: #73716b;
  --accent: #d97757;
  --accent-soft: #f6e3da;
  --good: #2f8f4e;
  --good-soft: #e3f2e7;
  --warn: #b7791f;
  --warn-soft: #faefd9;
  --bad: #c2412d;
  --bad-soft: #f9e1dc;
  --shadow: 0 1px 2px rgba(31, 30, 29, .04), 0 2px 8px rgba(31, 30, 29, .04);
  --radius: 14px;
  --serif: "Iowan Old Style", "Palatino Linotype", Georgia, "Songti SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1f1e1d;
    --surface: #2a2927;
    --surface-2: #33312e;
    --border: #3d3b37;
    --text: #f0eee6;
    --muted: #a6a39a;
    --accent: #e08a6c;
    --accent-soft: #4a2f25;
    --good: #5cc27f;
    --good-soft: #213a29;
    --warn: #e0a84a;
    --warn-soft: #43361d;
    --bad: #ef7a64;
    --bad-soft: #4a2722;
    --shadow: none;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #1f1e1d;
  --surface: #2a2927;
  --surface-2: #33312e;
  --border: #3d3b37;
  --text: #f0eee6;
  --muted: #a6a39a;
  --accent: #e08a6c;
  --accent-soft: #4a2f25;
  --good: #5cc27f;
  --good-soft: #213a29;
  --warn: #e0a84a;
  --warn-soft: #43361d;
  --bad: #ef7a64;
  --bad-soft: #4a2722;
  --shadow: none;
  color-scheme: dark;
}

* { box-sizing: border-box; }

/* 始终为滚动条预留位置：主页较短时没有滚动条，切换页面会整体左右跳动 */
html { scrollbar-gutter: stable; }
@supports not (scrollbar-gutter: stable) {
  html { overflow-y: scroll; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
.mono { font-family: var(--mono); }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.break { word-break: break-word; }

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 16px;
}

/* 顶栏 */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}
.brand {
  display: flex;
  align-items: center;
  color: var(--text);
  text-decoration: none;
}
.brand svg { display: block; height: 26px; }
.brand-word { width: 62.5px; }
.brand-word .wm-ai, .brand-mark { color: var(--accent); }
.brand-word .wm-si { color: var(--muted); }
.brand .brand-mark { display: none; width: 26px; }
.topbar-actions { display: flex; gap: 8px; }

.btn-ghost {
  font: inherit;
  font-size: 13px;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 12px;
  cursor: pointer;
}
.btn-ghost { white-space: nowrap; }
.btn-ghost:hover { background: var(--surface-2); }
.btn-ghost[aria-pressed="true"] {
  background: var(--accent-soft);
  border-color: var(--accent);
}
.btn-sm { padding: 2px 10px; font-size: 12px; }

/* 介绍 */
.intro { padding: 36px 0 20px; }
.intro h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(28px, 5vw, 40px);
  line-height: 1.2;
  margin: 0 0 10px;
}
.intro p { margin: 0; color: var(--muted); max-width: 640px; }

.notice {
  margin-bottom: 16px;
  padding: 12px 16px;
  border-radius: var(--radius);
  background: var(--warn-soft);
  color: var(--warn);
  border: 1px solid color-mix(in srgb, var(--warn) 30%, transparent);
}
.notice p { margin: 0; }
.notice details { margin-top: 8px; }
.notice summary { cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.notice ul { margin: 8px 0; padding-left: 20px; }
.notice li + li { margin-top: 4px; }
.notice details p { margin-top: 8px; }
.notice code { font-family: var(--mono); font-size: 13px; }

/* 卡片 */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  min-width: 0;
}
.card h2 {
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 12px;
}
.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.card-head h2 { margin: 0; }
.label {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: .02em;
}

/* 主卡 */
.hero {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 24px;
  align-items: center;
  padding: 28px;
}
.hero-ip {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 6px 0 2px;
  font-size: clamp(24px, 5vw, 34px);
  font-weight: 600;
  word-break: break-all;
}
.flag { font-size: .9em; line-height: 1; }
.verdict {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 8px 14px;
  border-radius: 10px;
  background: var(--surface-2);
  font-size: 14px;
}
.verdict.good { background: var(--good-soft); color: var(--good); }
.verdict.warn { background: var(--warn-soft); color: var(--warn); }
.verdict.bad { background: var(--bad-soft); color: var(--bad); }

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  flex: none;
}
.dot-pending { background: var(--muted); animation: pulse 1.2s infinite ease-in-out; }
@keyframes pulse { 50% { opacity: .3; } }

.hero-score { position: relative; text-align: center; }
.gauge { width: 100%; display: block; }
.gauge-track, .gauge-fill {
  fill: none;
  stroke-width: 14;
  stroke-linecap: round;
}
.gauge-track { stroke: var(--surface-2); }
.gauge-fill {
  stroke: var(--muted);
  transition: stroke-dasharray .8s ease, stroke .3s;
}
.gauge-text {
  position: absolute;
  left: 0;
  right: 0;
  top: 44%;
}
.gauge-num {
  font-family: var(--serif);
  font-size: 40px;
  line-height: 1;
}
.gauge-label { font-size: 13px; color: var(--muted); margin-top: 4px; }
.gauge-scale {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--muted);
  padding: 0 4px;
}

/* 三个出口 */
.exits {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 12px 0;
}
.exit-ip {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 4px 0 2px;
  font-size: 17px;
  font-weight: 600;
  word-break: break-all;
}

/* 网格 */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.span-all { grid-column: 1 / -1; }
/* 中等宽度三列太窄，退为两列 */
@media (max-width: 1000px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
}

/*
 * 三列时同一排卡片的分割线对齐：卡片和其中的列表都用 subgrid 共享行轨道，
 * 每一行的高度取同排三张卡片里最高的那一项，分割线都落在轨道边界上。
 * 卡片占用的轨道数（--rows）和列表行数（--n）写在页面上，可用性列表的行数由脚本设置。
 */
@supports (grid-template-rows: subgrid) {
  @media (min-width: 1001px) {
    .grid { row-gap: 0; }
    .grid > .card { margin-bottom: 12px; }
    .grid > .row-card {
      display: grid;
      grid-template-rows: subgrid;
      grid-row: span var(--rows);
      row-gap: 0;
    }
    .row-card > .kv, .row-card .avail, .row-card .history {
      display: grid;
      grid-template-rows: subgrid;
      grid-row: span var(--n);
      margin: 0;
    }
    .row-card .avail, .row-card .history { grid-template-columns: 1fr; }
    /* 历史列表外层也接入 subgrid（不用 display: contents，Chrome 下子网格会失效） */
    .row-card .history-box {
      --n: 5;
      display: grid;
      grid-template-rows: subgrid;
      grid-template-columns: 1fr;
      grid-row: span var(--n);
    }
    .row-card .history-box .history { position: static; overflow: visible; }
    .row-card .svc-status { margin-top: 0; }
    /* 行被同排更高的内容撑高时，内容垂直居中 */
    .row-card .kv dt, .row-card .kv dd { align-content: center; }
    .row-card .kv dt:first-of-type, .row-card .kv dd:first-of-type { padding-top: 8px; }
  }
}

.kv {
  display: grid;
  grid-template-columns: minmax(120px, max-content) 1fr;
  margin: 0;
}
.kv-wide { grid-template-columns: 140px 1fr; }
.kv dt { color: var(--muted); white-space: nowrap; }
.kv dd { margin: 0; min-width: 0; }
/* 每行之间的分割线：dt 和 dd 各画一段，连成整行；最后一行不画 */
.kv dt, .kv dd { padding: 8px 0; border-bottom: 1px solid var(--border); }
.kv dt { padding-right: 12px; } /* 代替列间距，让分割线连续 */
.kv dt:first-of-type, .kv dd:first-of-type { padding-top: 0; }
.kv dt:last-of-type, .kv dd:last-of-type { padding-bottom: 0; border-bottom: 0; }

.tag {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.6;
  vertical-align: 1px;
}
.tag.good { background: var(--good-soft); color: var(--good); }
.tag.warn { background: var(--warn-soft); color: var(--warn); }
.tag.bad { background: var(--bad-soft); color: var(--bad); }
.tag.neutral { background: var(--surface-2); color: var(--muted); }

.sub { display: block; color: var(--muted); font-size: 13px; }

/* 可用性 */
.avail {
  list-style: none;
  margin: 0 0 8px;
  padding: 0;
}
.avail li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}
.avail li:last-child { border-bottom: 0; }

/* 官方服务状态 */
.svc-status { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); }
.svc-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.svc-head a { text-decoration: none; }

/* 历史 */
.history {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
}
/* 双列布局时历史卡片与同一行的卡片等高：列表绝对定位不撑高卡片，放不下的条目由脚本隐藏 */
.history-card { display: flex; flex-direction: column; }
.history-box { position: relative; flex: 1; min-height: 0; }
.history-box .history { position: absolute; inset: 0; overflow: hidden; }
.history li {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 6px 0;
  font-size: 14px;
}
.history li + li { border-top: 1px solid var(--border); }
.history li[hidden] { display: none; }
.history time { color: var(--muted); font-family: var(--mono); font-size: 13px; flex: none; }
.history .ip { word-break: break-all; }

.footer { padding: 32px 16px 40px; text-align: center; }

/* 响应式 */
@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; padding: 20px; }
  .hero-score { max-width: 260px; margin: 0 auto; }
  .exits { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
  /* 单列时没有同行卡片可对齐，列表按内容排开，条数由脚本限制 */
  .history-box .history { position: static; }
}
@media (max-width: 480px) {
  .kv, .kv-wide { grid-template-columns: 1fr; gap: 0; }
  /* 单列时标签和内容上下排列，分割线只画在内容下方 */
  .kv dt { padding: 8px 0 2px; border-bottom: 0; font-size: 13px; }
  .kv dt:first-of-type { padding-top: 0; }
  .kv dd { padding-top: 0; }
  .card { padding: 16px; }
}

/* 旗帜 */
.flag { display: inline-flex; align-items: center; flex: none; }
.flag-img {
  width: 20px;
  height: 15px;
  border-radius: 2px;
  object-fit: cover;
  box-shadow: 0 0 0 1px var(--border);
  vertical-align: -2px;
}
.hero-ip .flag-img { width: 28px; height: 21px; }
.flag-code {
  font: 600 11px/1 var(--mono);
  padding: 3px 4px;
  border-radius: 3px;
  background: var(--surface-2);
  color: var(--muted);
}
.gauge-fill[stroke-dasharray="0 100"] { opacity: 0; }

.resolver {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 2px 0;
}

/* 页面导航 */
.topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}
.tabs {
  display: flex;
  gap: 2px;
  padding: 3px;
  border-radius: 999px;
  background: var(--surface-2);
}
.tabs a {
  display: inline-grid;
  justify-items: center;
  padding: 3px 12px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
}
/* 按加粗后的宽度预留空间，切换当前标签时宽度不变 */
.tabs a::after {
  content: attr(data-label);
  font-weight: 600;
  height: 0;
  overflow: hidden;
  visibility: hidden;
}
.tabs a:hover { color: var(--text); }
.tabs a[aria-current="page"] {
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  box-shadow: 0 0 0 1px var(--border);
}

@media (max-width: 900px) {
  .topbar-inner {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    height: auto;
    gap: 10px;
    padding-top: 10px;
    padding-bottom: 10px;
  }
  .topbar-left { display: contents; }
  .topbar .brand { grid-column: 1; grid-row: 1; }
  .topbar-actions { grid-column: 2; grid-row: 1; justify-self: end; }
  .tabs {
    grid-column: 1 / -1;
    grid-row: 2;
    min-width: 0;
    max-width: 100%;
    overflow-x: auto;
  }
  .tabs a { flex-shrink: 0; }
}

/* 指南上线预告 */
.guide-page { max-width: 840px; }
.guide-preview { padding: clamp(20px, 4vw, 36px); }
.guide-status {
  display: inline-block;
  margin: 0 0 16px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}
.guide-preview h2 { margin: 0; font-size: clamp(22px, 4vw, 30px); line-height: 1.4; }
.guide-bookmark { margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--border); }
.guide-bookmark h3 { margin: 0 0 8px; font-size: 18px; }
.guide-bookmark p { margin: 0 0 12px; }
.guide-bookmark p:last-child { margin-bottom: 0; }
.guide-bookmark kbd {
  display: inline-block;
  padding: 1px 5px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface-2);
  font: inherit;
}

@media (max-width: 520px) {
  .brand .brand-word { display: none; }
  .brand .brand-mark { display: block; }
  .topbar-left { gap: 10px; }
  .topbar-actions { gap: 6px; }
  .btn-ghost { padding: 5px 10px; }
  .wide-only { display: none; }
  .tabs a { padding: 3px 8px; }
  .topbar-inner { gap: 8px; }
}

/* ChatGPT 页强调色 */
:root[data-target="chatgpt"] {
  --accent: #10a37f;
  --accent-soft: #dcf3ec;
}
@media (prefers-color-scheme: dark) {
  :root[data-target="chatgpt"]:not([data-theme="light"]) {
    --accent: #19c37d;
    --accent-soft: #173d30;
  }
}
:root[data-target="chatgpt"][data-theme="dark"] {
  --accent: #19c37d;
  --accent-soft: #173d30;
}

/* ---------- 主页 ---------- */
:root {
  --claude: #d97757;
  --gpt: #10a37f;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --claude: #e08a6c;
    --gpt: #19c37d;
  }
}
:root[data-theme="dark"] {
  --claude: #e08a6c;
  --gpt: #19c37d;
}

.overview { margin-bottom: 12px; }
.ov-list { display: grid; }
.ov-row {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr) minmax(0, 1.2fr) minmax(0, 1.3fr);
  gap: 4px 16px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.ov-row:last-child { border-bottom: 0; }
.ov-label { font-weight: 600; }
.ov-label .sub { font-weight: 400; }
.ov-ip {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 600;
  word-break: break-all;
}
.ov-status { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; }
.ov-status .sub { flex-basis: 100%; }
#ov-claude .ov-label { color: var(--claude); }
#ov-chatgpt .ov-label { color: var(--gpt); }
.ov-summary { margin: 12px 0 0; }

.tools {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 12px;
}
.tool-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  color: inherit;
  text-decoration: none;
  transition: border-color .15s, transform .15s;
}
.tool-card:hover { transform: translateY(-1px); }
.tool-claude:hover { border-color: var(--claude); }
.tool-chatgpt:hover { border-color: var(--gpt); }
.tool-card h2 { font-size: 17px; margin-bottom: 6px; }
.tool-card p { margin: 0 0 12px; font-size: 14px; }
.tool-mark { width: 40px; height: 40px; flex: none; }
.tool-claude .tool-mark, .tool-claude .tool-go { color: var(--claude); }
.tool-chatgpt .tool-mark, .tool-chatgpt .tool-go { color: var(--gpt); }
.tool-go { font-weight: 600; font-size: 14px; }

@media (max-width: 820px) {
  .ov-row { grid-template-columns: 1fr 1fr; }
  .ov-label { grid-column: 1 / -1; }
  .tools { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .ov-row { grid-template-columns: 1fr; }
}