/* IP122 全站样式：轻量、无第三方依赖，所有页面共用 */
:root {
  --ip-bg: #f5f7fc;
  --ip-surface: #ffffff;
  --ip-surface-2: #eef2fb;
  --ip-text: #0f172a;
  --ip-muted: #475569;
  --ip-muted-2: #64748b;
  --ip-border: #dbe3f0;
  --ip-border-2: #c3cfe3;
  --ip-brand: #2563eb;
  --ip-brand-dark: #1d4ed8;
  --ip-brand-deep: #1e3a8a;
  --ip-accent: #06b6d4;
  --ip-glow: rgba(37, 99, 235, 0.16);
  --ip-radius: 18px;
  --ip-shadow: 0 18px 45px -28px rgba(15, 23, 42, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--ip-bg);
  color: var(--ip-text);
  font-family:
    "PingFang SC",
    "Microsoft YaHei",
    -apple-system,
    "Segoe UI",
    Roboto,
    sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--ip-brand-dark);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--ip-brand);
}

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

:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.45);
  outline-offset: 3px;
  border-radius: 6px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 10px 16px;
  background: var(--ip-brand-deep);
  color: #fff;
  z-index: 100;
}

.skip-link:focus {
  left: 12px;
  top: 12px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.site-container {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ip-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 68px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ip-text);
  font-size: 19px;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.2px;
}

.logo img {
  width: 34px;
  height: 34px;
  border-radius: 10px;
}

.logo b {
  color: var(--ip-brand);
}

.site-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 18px;
  font-size: 15px;
}

.site-nav a {
  color: var(--ip-muted);
  text-decoration: none;
  padding: 4px 0;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ip-brand-dark);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--ip-brand);
  color: #fff !important;
  font-weight: 600;
  text-decoration: none;
}

.nav-cta:hover {
  background: var(--ip-brand-dark);
  color: #fff !important;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 64px 0 36px;
  background:
    radial-gradient(900px 380px at 85% -10%, rgba(6, 182, 212, 0.18), transparent 70%),
    radial-gradient(700px 320px at 5% 0%, var(--ip-glow), transparent 65%);
}

.hero__eyebrow {
  margin: 0 0 10px;
  color: var(--ip-brand-dark);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.2;
  letter-spacing: -0.5px;
}

.hero__lead {
  max-width: 780px;
  margin: 0 0 18px;
  color: var(--ip-muted);
  font-size: 17px;
}

.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--ip-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--ip-muted);
  font-size: 13px;
}

.badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ip-brand);
}

/* ---------- 查询工具 ---------- */
.tool-card {
  margin: 8px 0 0;
  padding: 26px;
  background: var(--ip-surface);
  border: 1px solid var(--ip-border);
  border-radius: var(--ip-radius);
  box-shadow: var(--ip-shadow);
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.ip-block {
  padding: 18px;
  border: 1px solid var(--ip-border);
  border-radius: 14px;
  background: linear-gradient(180deg, #fff, var(--ip-surface-2));
}

.ip-label {
  margin: 0 0 6px;
  color: var(--ip-muted-2);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.ip-value {
  margin: 0 0 10px;
  font-family: "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 700;
  line-height: 1.3;
  word-break: break-all;
}

.ip-value.is-pending {
  color: var(--ip-muted-2);
  font-family: inherit;
  font-size: 20px;
  font-weight: 600;
}

.ip-meta {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--ip-muted);
  font-size: 14px;
}

.ip-meta:empty {
  display: none;
}

.ip-meta li {
  display: flex;
  gap: 10px;
}

.ip-meta span {
  flex: 0 0 auto;
  color: var(--ip-muted-2);
}

.ip-meta b {
  font-weight: 600;
  word-break: break-word;
}

.ip-hint {
  margin: 10px 0 0;
  color: var(--ip-muted-2);
  font-size: 13px;
}

.ip-hint:empty {
  display: none;
}

.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 42px;
  padding: 9px 18px;
  border: 1px solid transparent;
  border-radius: 10px;
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition:
    background 0.18s ease,
    border-color 0.18s ease,
    color 0.18s ease;
}

.btn--primary {
  background: var(--ip-brand);
  color: #fff;
}

.btn--primary:hover:not(:disabled) {
  background: var(--ip-brand-dark);
  color: #fff;
}

.btn--ghost {
  border-color: var(--ip-border-2);
  background: #fff;
  color: var(--ip-text);
}

.btn--ghost:hover:not(:disabled) {
  border-color: var(--ip-brand);
  color: var(--ip-brand-dark);
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.tool-status {
  margin: 14px 0 0;
  color: var(--ip-muted);
  font-size: 14px;
}

.tool-status.is-error {
  color: #b42318;
}

/* ---------- 内容区 ---------- */
.section {
  /* 同时带有 .site-container 时，横向 auto 外边距不能被覆盖，否则整块会贴左 */
  margin-block: 44px;
}

.section h2 {
  margin: 0 0 12px;
  font-size: clamp(22px, 3vw, 28px);
  line-height: 1.35;
}

.section h3 {
  margin: 24px 0 8px;
  font-size: 18px;
}

.section p {
  margin: 0 0 12px;
  color: var(--ip-muted);
}

.section strong {
  color: var(--ip-text);
}

.lede {
  max-width: 820px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 18px 0;
}

.card {
  padding: 18px 20px;
  background: var(--ip-surface);
  border: 1px solid var(--ip-border);
  border-radius: 14px;
}

.card h3 {
  margin: 0 0 6px;
  font-size: 17px;
}

.card p {
  margin: 0;
  font-size: 14px;
}

.card-grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card-grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.table-wrap {
  overflow-x: auto;
  margin: 16px 0;
  border: 1px solid var(--ip-border);
  border-radius: 14px;
  background: #fff;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th,
td {
  padding: 11px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--ip-border);
}

th {
  background: var(--ip-surface-2);
  color: var(--ip-text);
  font-weight: 700;
  white-space: nowrap;
}

tr:last-child td {
  border-bottom: none;
}

td {
  color: var(--ip-muted);
}

.note {
  margin: 18px 0;
  padding: 14px 18px;
  border-left: 4px solid var(--ip-brand);
  border-radius: 0 12px 12px 0;
  background: var(--ip-surface-2);
  color: var(--ip-muted);
  font-size: 14px;
}

.note strong {
  color: var(--ip-text);
}

.list {
  margin: 12px 0;
  padding-left: 22px;
  color: var(--ip-muted);
}

.list li {
  margin: 6px 0;
}

.list--checks {
  list-style: none;
  padding-left: 0;
}

.list--checks li {
  position: relative;
  padding-left: 26px;
}

.list--checks li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--ip-brand);
  font-weight: 700;
}

.crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 0;
  color: var(--ip-muted-2);
  font-size: 13px;
}

.crumb a {
  color: var(--ip-muted-2);
  text-decoration: none;
}

.crumb a:hover {
  color: var(--ip-brand-dark);
}

.page-head {
  padding: 26px 0 8px;
}

.page-head h1 {
  margin: 10px 0 10px;
  font-size: clamp(30px, 4.4vw, 42px);
  line-height: 1.22;
}

.page-head .lede {
  color: var(--ip-muted);
  font-size: 17px;
}

.related {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.related a {
  display: block;
  padding: 16px 18px;
  background: #fff;
  border: 1px solid var(--ip-border);
  border-radius: 14px;
  color: var(--ip-text);
  text-decoration: none;
}

.related a:hover {
  border-color: var(--ip-brand);
  box-shadow: 0 12px 30px -24px rgba(15, 23, 42, 0.45);
}

.related strong {
  display: block;
  margin-bottom: 4px;
  color: var(--ip-brand-dark);
}

.related span {
  color: var(--ip-muted-2);
  font-size: 13px;
}

/* ---------- FAQ ---------- */
.faq {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.faq details {
  padding: 14px 18px;
  background: #fff;
  border: 1px solid var(--ip-border);
  border-radius: 12px;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--ip-text);
}

.faq summary::marker {
  color: var(--ip-brand);
}

.faq p {
  margin: 10px 0 0;
  font-size: 14px;
}

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: 56px;
  padding: 28px 0 36px;
  background: var(--ip-brand-deep);
  color: rgba(255, 255, 255, 0.82);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.site-footer p {
  margin: 0;
  font-size: 13px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 13px;
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
}

.footer-nav a:hover {
  color: #fff;
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .card-grid--4,
  .related {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 0;
  }

  .site-nav {
    width: 100%;
    justify-content: flex-start;
    gap: 6px 14px;
    font-size: 14px;
  }

  .hero {
    padding-top: 40px;
  }

  .tool-grid,
  .card-grid,
  .card-grid--3,
  .card-grid--4,
  .related {
    grid-template-columns: 1fr;
  }

  .tool-card {
    padding: 18px;
  }
}

/* ---------- 工具页表单与结果 ---------- */
.tool-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
}

.tab {
  padding: 8px 15px;
  border: 1px solid var(--ip-border-2);
  border-radius: 999px;
  background: #fff;
  color: var(--ip-muted);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
}

.tab[aria-selected="true"] {
  border-color: var(--ip-brand);
  background: var(--ip-brand);
  color: #fff;
}

.tool-form {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-end;
}

.field {
  display: grid;
  flex: 1 1 240px;
  gap: 6px;
}

.field--narrow {
  flex: 0 1 160px;
}

.field label {
  color: var(--ip-muted-2);
  font-size: 13px;
  font-weight: 600;
}

.field input,
.field select {
  width: 100%;
  min-height: 44px;
  padding: 9px 12px;
  border: 1px solid var(--ip-border-2);
  border-radius: 10px;
  background: #fff;
  color: var(--ip-text);
  font: inherit;
  font-size: 15px;
}

.field input:focus,
.field select:focus {
  border-color: var(--ip-brand);
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.form-hint {
  margin: 10px 0 0;
  color: var(--ip-muted-2);
  font-size: 13px;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.result-block {
  padding: 16px 18px;
  border: 1px solid var(--ip-border);
  border-radius: 14px;
  background: #fff;
}

.result-block h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.result-block .ip-meta {
  font-size: 14px;
}

.provider-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.provider-card {
  padding: 16px 18px;
  border: 1px solid var(--ip-border);
  border-radius: 14px;
  background: #fff;
}

.provider-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.provider-head strong {
  font-size: 15px;
}

.provider-meta {
  color: var(--ip-muted-2);
  font-size: 13px;
}

.pill {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.pill--ok {
  background: #ecfdf5;
  color: #047857;
}

.pill--bad {
  background: #fef2f2;
  color: #b42318;
}

.answer-list {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
}

.answer-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 5px 0;
  border-bottom: 1px dashed var(--ip-border);
}

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

.answer-list code {
  padding: 1px 6px;
  border-radius: 6px;
  background: var(--ip-surface-2);
  color: var(--ip-brand-deep);
  font-size: 13px;
  word-break: break-all;
}

.answer-list .ttl {
  color: var(--ip-muted-2);
  font-size: 12px;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.metric {
  padding: 18px;
  border: 1px solid var(--ip-border);
  border-radius: 14px;
  background: linear-gradient(180deg, #fff, var(--ip-surface-2));
  text-align: center;
}

.metric p {
  margin: 0;
  color: var(--ip-muted-2);
  font-size: 13px;
}

.metric strong {
  display: block;
  margin: 4px 0;
  font-size: clamp(24px, 4vw, 32px);
  line-height: 1.2;
}

.metric span {
  color: var(--ip-muted-2);
  font-size: 12px;
}

.progress {
  height: 10px;
  margin-top: 14px;
  border-radius: 999px;
  background: var(--ip-surface-2);
  overflow: hidden;
}

.progress__bar {
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--ip-brand), var(--ip-accent));
  transition: width 0.2s ease;
}

.site-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.site-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto auto;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  border: 1px solid var(--ip-border);
  border-radius: 12px;
  background: #fff;
}

.site-row strong {
  display: block;
  font-size: 15px;
}

.site-row small {
  color: var(--ip-muted-2);
  font-size: 12px;
  word-break: break-all;
}

.site-row .site-time {
  color: var(--ip-muted);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.tool-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.tool-cards a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px;
  border: 1px solid var(--ip-border);
  border-radius: 16px;
  background: #fff;
  color: var(--ip-text);
  text-decoration: none;
}

.tool-cards a:hover {
  border-color: var(--ip-brand);
  box-shadow: 0 16px 36px -28px rgba(15, 23, 42, 0.4);
}

.tool-cards strong {
  color: var(--ip-brand-dark);
  font-size: 17px;
}

.tool-cards span {
  color: var(--ip-muted);
  font-size: 14px;
}

.tool-cards em {
  margin-top: 4px;
  color: var(--ip-muted-2);
  font-size: 12px;
  font-style: normal;
}

.mono {
  font-family: "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;
  word-break: break-all;
}

.stack {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

@media (max-width: 720px) {
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .site-row {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .site-row .site-time {
    text-align: left;
  }

  .site-row .btn {
    grid-column: 1 / -1;
  }

  .tool-form {
    display: grid;
    grid-template-columns: 1fr;
  }

  .field,
  .field--narrow {
    flex: 1 1 auto;
  }

  .form-actions .btn {
    flex: 1 1 auto;
  }
}

/* ---------- Google AdSense 广告位 ---------- */
.ad-slot {
  margin: 28px 0;
}

.ad-slot:empty {
  display: none;
}

.ad-slot .adsbygoogle {
  display: block;
  width: 100%;
}

/* ---------- 广告同意横幅（EEA / 英国 / 瑞士） ---------- */
.consent-banner {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 60;
  padding: 14px 18px;
  background: var(--ip-surface);
  border-top: 1px solid var(--ip-border);
  box-shadow: 0 -12px 30px -20px rgba(15, 23, 42, 0.45);
}

.consent-banner__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  align-items: center;
  max-width: 1080px;
  margin: 0 auto;
}

.consent-banner p {
  flex: 1 1 460px;
  margin: 0;
  color: var(--ip-muted);
  font-size: 14px;
  line-height: 1.65;
}

.consent-banner__en {
  display: block;
  margin-top: 4px;
  color: var(--ip-muted-2);
  font-size: 12px;
}

.consent-banner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

body.consent-open {
  padding-bottom: 96px;
}