:root {
  --red-700: #c81f35;
  --red-600: #d7263d;
  --red-100: #fff0f2;
  --ink: #1f2026;
  --muted: #6a6b75;
  --line: #e7e7ed;
  --panel: #ffffff;
  --page: #f5f6fa;
  --success-bg: #f3fbf6;
  --success-line: #bfe7cb;
  --error-bg: #fff3f5;
  --error-line: #f0c8cf;
  --shadow: 0 8px 22px rgba(24, 25, 31, 0.07);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--page);
}

.page-shell {
  width: min(760px, 100% - 28px);
  min-height: 100vh;
  margin: 0 auto;
  display: grid;
  align-items: center;
  padding: 24px 0;
}

.query-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 22px;
  display: grid;
  gap: 18px;
}

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--red-600);
  font-size: 0.84rem;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-size: 1.65rem;
  line-height: 1.2;
}

.network-state {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1;
}

.network-state.ready {
  color: var(--red-700);
  border-color: rgba(215, 38, 61, 0.22);
  background: var(--red-100);
}

.network-state.error {
  color: var(--red-700);
  border-color: var(--error-line);
  background: var(--error-bg);
}

.query-form {
  display: grid;
  gap: 8px;
}

label {
  color: var(--muted);
  font-size: 0.92rem;
}

.query-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
}

input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 13px 14px;
  color: var(--ink);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus {
  border-color: var(--red-600);
  box-shadow: 0 0 0 3px rgba(215, 38, 61, 0.14);
}

button {
  border: 0;
  border-radius: 8px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

button:active {
  transform: translateY(1px);
}

button:disabled {
  opacity: 0.62;
  cursor: not-allowed;
}

.primary-btn {
  min-width: 96px;
  background: var(--red-600);
  color: #fff;
  padding: 13px 16px;
}

.primary-btn:hover {
  filter: brightness(1.03);
}

.result-panel {
  min-height: 92px;
  border: 1px dashed #d8d9e1;
  border-radius: 8px;
  background: #fbfbfd;
  padding: 14px;
  color: var(--muted);
  display: grid;
  gap: 12px;
}

.result-panel p {
  margin: 0;
  line-height: 1.5;
}

.result-panel.loading {
  border-style: solid;
  border-color: rgba(215, 38, 61, 0.18);
  background: #fffafa;
}

.result-panel.error {
  border-style: solid;
  border-color: var(--error-line);
  background: var(--error-bg);
  color: var(--red-700);
}

.result-panel.found {
  border-style: solid;
  border-color: var(--success-line);
  background: var(--success-bg);
  color: var(--ink);
}

.result-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.result-title strong {
  font-size: 1.06rem;
}

.copy-btn {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--red-600);
  padding: 7px 10px;
  font-size: 0.85rem;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.result-item {
  min-width: 0;
  border: 1px solid rgba(31, 32, 38, 0.08);
  border-radius: 8px;
  background: #fff;
  padding: 10px;
  display: grid;
  gap: 5px;
}

.result-item span {
  color: var(--muted);
  font-size: 0.8rem;
}

.result-item b {
  overflow-wrap: anywhere;
  word-break: break-word;
  font-size: 1rem;
}

@media (max-width: 620px) {
  .page-shell {
    width: calc(100% - 18px);
    align-items: start;
    padding-top: 14px;
  }

  .query-panel {
    padding: 16px;
  }

  .page-header {
    display: grid;
  }

  .network-state {
    justify-self: start;
  }

  .query-row,
  .result-grid {
    grid-template-columns: 1fr;
  }

  .primary-btn {
    width: 100%;
  }
}