:root {
  color-scheme: light;
  --bg: #f4f7fa;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --text: #0f172a;
  --muted: #5b6577;
  --border: #d9e0ea;
  --border-strong: #c3cddb;
  --accent: #0f766e;
  --accent-strong: #0b5f58;
  --accent-soft: #e7f5f2;
  --focus: #0f766e;
  --ok: #067647;
  --ok-bg: #ecfdf3;
  --ok-border: #a9e0bf;
  --warn: #92400e;
  --warn-bg: #fffaeb;
  --warn-border: #f3cf80;
  --danger: #b42318;
  --danger-bg: #fef3f2;
  --danger-border: #f0b7b1;
  --info-bg: #f1f5f9;
  --info-border: #dbe3ec;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.05), 0 10px 30px rgba(15, 23, 42, 0.06);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC",
    "Source Han Sans SC", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", "Courier New", monospace;
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: linear-gradient(180deg, #f8fbfc 0%, var(--bg) 55%, #eef2f7 100%);
}

h1,
h2,
h3,
h4,
p,
dl,
dd,
ul {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

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

button {
  font: inherit;
  color: inherit;
}

code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: #eef2f6;
  border: 1px solid #e1e7ee;
  padding: 1px 5px;
  border-radius: 5px;
  word-break: break-all;
}

[hidden] {
  display: none !important;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- 跳过导航 ---------- */

.skip-link {
  position: absolute;
  top: -64px;
  left: 12px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 10px 10px;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 0;
}

/* ---------- 布局 ---------- */

.wrap {
  width: 100%;
  max-width: 980px;
  margin: 0 auto;
  padding-left: clamp(14px, 4vw, 28px);
  padding-right: clamp(14px, 4vw, 28px);
}

.page-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 22px;
  padding-bottom: 22px;
}

.brand-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-icon {
  flex: 0 0 auto;
  border-radius: 10px;
}

.brand-text {
  min-width: 0;
}

h1 {
  font-size: clamp(1.3rem, 1.1rem + 1vw, 1.6rem);
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.subtitle {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13.5px;
}

.page-main {
  flex: 1 0 auto;
  padding-top: 24px;
  padding-bottom: 8px;
}

.page-footer {
  flex: 0 0 auto;
  margin-top: 32px;
  padding: 18px 0 26px;
  border-top: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.75;
}

.page-footer p {
  overflow-wrap: anywhere;
}

/* ---------- 徽标与横幅 ---------- */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border: 1px solid;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.6;
  white-space: nowrap;
}

.badge-warn {
  background: var(--warn-bg);
  border-color: var(--warn-border);
  color: var(--warn);
}

.banner {
  display: block;
  padding: 11px 14px;
  border: 1px solid;
  border-radius: 12px;
  font-size: 13.5px;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.banner strong {
  font-weight: 700;
}

.banner-warn {
  background: var(--warn-bg);
  border-color: var(--warn-border);
  color: #713f12;
}

.banner-error {
  background: var(--danger-bg);
  border-color: var(--danger-border);
  color: #7a271a;
}

.page-main > .banner {
  margin-bottom: 20px;
}

/* ---------- 输入面板 ---------- */

.panel {
  padding: clamp(16px, 3vw, 26px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.panel-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 18px;
  line-height: 1.35;
}

.step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent);
  color: #ffffff;
  font-size: 12.5px;
  font-weight: 700;
}

.help {
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.65;
  overflow-wrap: anywhere;
}

.help-small {
  margin-top: 8px;
  margin-bottom: 0;
  font-size: 12.5px;
}

.field-label {
  display: block;
  margin-bottom: 6px;
  font-size: 13.5px;
  font-weight: 600;
}

.session-input {
  display: block;
  width: 100%;
  min-height: 220px;
  padding: 14px;
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: #fbfcfe;
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  white-space: pre;
  overflow: auto;
  resize: vertical;
  tab-size: 2;
}

.session-input::placeholder {
  color: #7c8798;
  opacity: 1;
}

.session-input:focus {
  border-color: var(--accent);
}

.session-input:focus-visible {
  outline: 3px solid rgba(15, 118, 110, 0.28);
  outline-offset: 1px;
}

.session-input[readonly] {
  background: #f1f4f8;
  cursor: progress;
}

/* ---------- 本地校验提示 ---------- */

.validation {
  margin-top: 12px;
}

.validation-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.validation-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 11px;
  border: 1px solid transparent;
  border-radius: 9px;
  font-size: 13.5px;
  line-height: 1.55;
}

.validation-mark {
  flex: 0 0 auto;
  font-weight: 700;
  line-height: 1.5;
}

.validation-text {
  overflow-wrap: anywhere;
}

.validation-ok {
  background: var(--ok-bg);
  border-color: var(--ok-border);
  color: #14532d;
}

.validation-ok .validation-mark {
  color: var(--ok);
}

.validation-error {
  background: var(--danger-bg);
  border-color: var(--danger-border);
  color: #7a271a;
}

.validation-error .validation-mark {
  color: var(--danger);
}

.validation-warn {
  background: var(--warn-bg);
  border-color: var(--warn-border);
  color: #713f12;
}

.validation-warn .validation-mark {
  color: var(--warn);
}

.validation-info {
  background: var(--info-bg);
  border-color: var(--info-border);
  color: #334155;
}

.validation-info .validation-mark {
  color: #475569;
}

/* ---------- 按钮与状态 ---------- */

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 20px;
  border: 1.5px solid transparent;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  cursor: pointer;
  touch-action: manipulation;
  transition: background-color 0.15s ease, border-color 0.15s ease,
    color 0.15s ease, opacity 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}

.btn-secondary {
  background: var(--surface);
  border-color: var(--border-strong);
  color: var(--text);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--surface-soft);
  border-color: #a9b6c7;
}

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

.btn-primary:disabled {
  opacity: 0.62;
}

.spinner {
  display: none;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.btn.is-loading .spinner {
  display: inline-block;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.status-line {
  min-height: 1.5em;
  margin-top: 12px;
  color: var(--muted);
  font-size: 13.5px;
  overflow-wrap: anywhere;
}

.status-line[data-state="busy"] {
  color: var(--accent-strong);
  font-weight: 600;
}

.status-line[data-state="ok"] {
  color: var(--ok);
  font-weight: 600;
}

.status-line[data-state="error"] {
  color: var(--danger);
  font-weight: 600;
}

.reset-notice {
  margin-top: 10px;
  padding: 8px 12px;
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
  background: var(--accent-soft);
  color: #0b4f4a;
  font-size: 13px;
  overflow-wrap: anywhere;
}

/* ---------- 错误框 ---------- */

.error-region {
  margin-top: 24px;
  padding: 16px 18px;
  background: var(--danger-bg);
  border: 1.5px solid var(--danger-border);
  border-radius: var(--radius);
  box-shadow: 0 1px 2px rgba(180, 35, 24, 0.06);
}

.error-title {
  margin-bottom: 8px;
  color: var(--danger);
  font-size: 17px;
  line-height: 1.4;
}

.error-message {
  color: #7a271a;
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.error-hint {
  margin-top: 6px;
  color: #7a271a;
  font-size: 13.5px;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.error-meta {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 4px 12px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed rgba(180, 35, 24, 0.25);
  color: #7a271a;
  font-size: 12.5px;
}

.error-meta dt {
  font-weight: 600;
}

.error-meta dd {
  margin: 0;
  font-family: var(--mono);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.error-footnote {
  margin-top: 10px;
  color: #8a3027;
  font-size: 12px;
}

/* ---------- 结果 ---------- */

.results {
  margin-top: 24px;
}

.results-title {
  margin-bottom: 14px;
  font-size: 20px;
  line-height: 1.35;
}

.results-title:focus {
  outline: none;
}

.results-title:focus-visible {
  outline: 3px solid rgba(15, 118, 110, 0.35);
  outline-offset: 4px;
}

.result-card {
  margin-bottom: 16px;
  padding: clamp(16px, 3vw, 24px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card-title {
  margin-bottom: 12px;
  font-size: 16px;
  line-height: 1.4;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 170px), 1fr));
  gap: 10px;
}

.stat {
  min-width: 0;
  padding: 10px 12px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.stat-label {
  color: var(--muted);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.stat-value {
  margin-top: 2px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.pill-inline {
  margin-top: 6px;
}

.summary-email {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 8px;
  margin-top: 12px;
  padding: 10px 12px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  font-size: 13.5px;
}

.summary-email-label {
  color: var(--muted);
  font-weight: 600;
}

.summary-email-value {
  font-weight: 600;
  overflow-wrap: anywhere;
}

.summary-email-note {
  flex-basis: 100%;
  color: var(--muted);
  font-size: 11.5px;
}

.result-banner {
  margin-top: 14px;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 2px 9px;
  border: 1px solid;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 700;
  line-height: 1.6;
  white-space: nowrap;
}

.pill-warn {
  background: var(--warn-bg);
  border-color: var(--warn-border);
  color: var(--warn);
}

.pill-paid {
  background: var(--accent-soft);
  border-color: #9fd6cd;
  color: #0b5f58;
}

.pill-free {
  background: var(--info-bg);
  border-color: var(--info-border);
  color: #475569;
}

.pill-unknown {
  background: var(--warn-bg);
  border-color: var(--warn-border);
  color: var(--warn);
}

.inline-note {
  margin-bottom: 12px;
  padding: 8px 11px;
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  border-radius: 8px;
  color: var(--warn);
  font-size: 12.5px;
}

.empty-state {
  padding: 18px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

.account-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 330px), 1fr));
  gap: 14px;
}

.account-card {
  min-width: 0;
  padding: 14px 16px;
  background: #ffffff;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
}

.account-card.is-paid {
  background: linear-gradient(180deg, #f2fbf8 0%, #ffffff 42%);
  border-color: #8fcfc6;
  box-shadow: 0 1px 2px rgba(15, 118, 110, 0.06);
}

.account-card.is-free {
  background: #fcfdff;
}

.account-card.is-unknown {
  background: #fffdf8;
}

.account-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.account-title {
  font-size: 15px;
  line-height: 1.4;
}

.pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.fields {
  margin-top: 2px;
}

.field {
  display: grid;
  grid-template-columns: minmax(78px, 32%) minmax(0, 1fr);
  align-items: baseline;
  gap: 8px;
  padding: 7px 0;
  border-top: 1px dashed #e6ebf2;
}

.field:first-child {
  border-top: none;
}

.field-name {
  color: var(--muted);
  font-size: 12.5px;
  font-weight: 500;
}

.field-value {
  min-width: 0;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.55;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.field-value-text {
  font-weight: 600;
}

.value-muted {
  color: var(--muted);
  font-weight: 500;
}

.value-danger {
  color: var(--danger);
}

.value-success {
  color: var(--ok);
}

.value-neutral {
  color: #475569;
  font-weight: 600;
}

.mono {
  font-family: var(--mono);
  font-size: 12.5px;
  word-break: break-all;
}

.tz {
  display: inline-block;
  margin-left: 4px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 400;
}

.field-note {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 11.5px;
  font-weight: 400;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.warnings {
  margin-top: 14px;
  padding: 12px 14px;
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  border-radius: var(--radius-sm);
}

.warnings-title {
  margin-bottom: 6px;
  color: var(--warn);
  font-size: 14px;
}

.warnings-list {
  padding-left: 20px;
  color: #713f12;
  font-size: 13px;
  line-height: 1.6;
  list-style: disc;
}

.warnings-list li + li {
  margin-top: 4px;
}

.meta-line {
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px dashed var(--border);
  color: var(--muted);
  font-size: 12px;
}

.legend {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.7;
  overflow-wrap: anywhere;
}

/* ---------- 响应式 ---------- */

@media (max-width: 640px) {
  .header-inner {
    gap: 14px;
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .brand-icon {
    width: 34px;
    height: 34px;
  }

  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .brand-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

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

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

  .session-input {
    min-height: 180px;
    font-size: 12.5px;
  }
}

@media (max-width: 420px) {
  .field {
    grid-template-columns: 1fr;
    gap: 1px;
  }

  .field-name {
    font-size: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .spinner {
    animation: none;
    border-top-color: rgba(255, 255, 255, 0.4);
  }
}