:root {
  --bg: #f7f8fb;
  --panel: #ffffff;
  --text: #22262e;
  --muted: #6b7280;
  --border: #e3e6ec;
  --accent: #4f6df5;
  --accent-text: #ffffff;
  --success-bg: #e6f8ec;
  --success-text: #1a7f4b;
  --fail-bg: #fdecec;
  --fail-text: #b3261e;
  --code-bg: #1e2230;
  --code-text: #e8eaf2;
  --lock: #c7cad1;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161c;
    --panel: #1c1f27;
    --text: #eef0f5;
    --muted: #9aa0ac;
    --border: #2a2e38;
    --accent: #7b93ff;
    --accent-text: #10121a;
    --success-bg: #113626;
    --success-text: #6fdf9d;
    --fail-bg: #3a1c1c;
    --fail-text: #ff8f87;
    --code-bg: #0f1117;
    --code-text: #e8eaf2;
    --lock: #444a58;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app {
  display: flex;
  min-height: 100vh;
}

.landing {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

/* 首页（水平测试/每日复习）没有侧栏，账号头像固定在右上角，
   保证不管当前显示的是测试页还是复习选择页，都有地方能退出登录/换账号。 */
.corner-account {
  position: fixed;
  top: 16px;
  right: 16px;
  width: 190px;
  z-index: 20;
}

.landing-inner {
  max-width: 720px;
  width: 100%;
  text-align: center;
}

/* 首页左上角固定的小logo，跟右上角的账号头像对称，两边视觉重量差不多，
   中间居中的内容才真的显得"居中"，不会因为只有右边有东西而看着偏左。 */
.corner-logo {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 20;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.08));
}

.landing-eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.landing h1 {
  font-size: 30px;
  font-weight: 800;
  margin: 12px 0 10px;
  text-wrap: balance;
}

.quiz-score {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  margin: 10px 0 0;
}

.landing-lede {
  font-size: 16px;
  color: var(--muted);
  line-height: 1.7;
  max-width: 46ch;
  margin: 0 auto 40px;
}


.quiz-btn-primary {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-text);
  border: none;
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 10px;
  cursor: pointer;
}

.quiz-choice-row {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.quiz-choice-row .quiz-btn-primary {
  margin: 0;
}

.quiz-skip {
  margin-top: 22px;
  font-size: 13px;
  color: var(--muted);
}

.quiz-skip a {
  color: var(--muted);
  text-decoration: underline;
}

.quiz-skip a:hover {
  color: var(--accent);
}

.account-gate {
  max-width: 360px;
  margin: 0 auto;
  text-align: left;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 22px;
}

.account-gate-label {
  font-size: 13.5px;
  color: var(--muted);
  margin: 0 0 12px;
  line-height: 1.5;
}

.account-gate input {
  width: 100%;
  padding: 10px 12px;
  margin-bottom: 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

.account-gate .account-btn-row {
  margin-top: 6px;
}

.account-gate .account-btn-row button {
  font-size: 13.5px;
  padding: 10px 8px;
}

.account-gate-message {
  font-size: 12.5px;
  color: var(--muted);
  margin: 8px 0 0;
  min-height: 15px;
}

.account-gate-message.error {
  color: var(--fail-text);
}

.account-gate .quiz-skip {
  margin-top: 14px;
  text-align: center;
}

.quiz-progress {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: 14px;
}

.quiz-question {
  font-size: 21px;
  font-weight: 700;
  line-height: 1.5;
  text-wrap: balance;
  margin: 0 0 28px;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
  max-width: 480px;
  margin: 0 auto;
}

.quiz-option {
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 15px;
  padding: 14px 18px;
  border-radius: 10px;
  cursor: pointer;
  text-align: left;
  font-family: "SF Mono", Menlo, monospace;
}

.quiz-option:hover:not(:disabled) {
  border-color: var(--accent);
}

.quiz-option:disabled {
  cursor: default;
}

.quiz-option.correct {
  border-color: var(--success-text);
  background: var(--success-bg);
  color: var(--success-text);
}

.quiz-option.wrong {
  border-color: var(--fail-text);
  background: var(--fail-bg);
  color: var(--fail-text);
}

.sidebar {
  width: 260px;
  flex-shrink: 0;
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 20px 14px;
}

.sidebar h1 {
  font-size: 18px;
  margin: 4px 8px 10px;
}

.progress-summary {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--muted);
  margin: 0 8px 16px;
  font-variant-numeric: tabular-nums;
}

.entry-switch {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin: 4px 8px 16px;
}

.entry-switch a,
.entry-switch-current {
  font-size: 13px;
  text-decoration: none;
}

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

.entry-switch a:hover {
  color: var(--accent);
}

.entry-switch-current {
  color: var(--accent);
  font-weight: 600;
}

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

.reset-progress-btn {
  margin: 18px 8px 0;
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 12.5px;
  padding: 7px 12px;
  border-radius: 8px;
  cursor: pointer;
  width: calc(100% - 16px);
}

.reset-progress-btn:hover {
  color: var(--fail-text);
  border-color: var(--fail-text);
}

.sync-row {
  display: flex;
  gap: 6px;
  margin: 8px 8px 0;
}

.sync-btn {
  flex: 1;
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 11.5px;
  padding: 7px 6px;
  border-radius: 8px;
  cursor: pointer;
}

.sync-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.account-box {
  margin-top: 6px;
}

.account-avatar-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
  color: var(--text);
  font-size: 12.5px;
  text-align: left;
  cursor: pointer;
}

.account-avatar-btn:hover {
  border-color: var(--accent);
}

.account-avatar {
  flex: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--border);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.account-avatar.logged-in {
  background: var(--accent);
  color: var(--accent-text);
}

.account-avatar-label {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.account-panel {
  margin-top: 8px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
}

.account-panel input {
  width: 100%;
  padding: 7px 9px;
  margin-bottom: 6px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel);
  color: var(--text);
  font-size: 12.5px;
}

.account-btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.account-btn-row button {
  flex: 1;
  font-size: 12px;
  padding: 7px 6px;
}

.account-status {
  font-size: 12.5px;
  color: var(--text);
  margin: 0 0 6px;
  font-weight: 600;
}

.account-message {
  font-size: 11.5px;
  color: var(--muted);
  margin-top: 6px;
  min-height: 14px;
}

.account-message.error {
  color: var(--fail-text);
}

.sidebar-footer {
  margin: 16px 8px 0;
  font-size: 12px;
  color: var(--muted);
  display: flex;
  gap: 6px;
}

.sidebar-footer a {
  color: var(--muted);
  text-decoration: none;
}

.sidebar-footer a:hover {
  color: var(--accent);
}

.site-footer {
  text-align: center;
  font-size: 12.5px;
  color: var(--muted);
  padding: 24px 0 8px;
}

.site-footer a {
  color: var(--muted);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--accent);
}

.site-footer-dot {
  margin: 0 8px;
}

.doc-page {
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 24px 80px;
  line-height: 1.75;
  font-size: 15px;
}

.doc-page h1 {
  font-size: 26px;
  margin-bottom: 6px;
}

.doc-page .doc-updated {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 32px;
}

.doc-page h2 {
  font-size: 17px;
  margin-top: 32px;
}

.doc-page ul {
  padding-left: 20px;
}

.level-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text);
}

.level-item:hover:not(.locked) {
  background: var(--bg);
}

.level-item.active {
  background: var(--accent);
  color: var(--accent-text);
}

.level-item.locked {
  color: var(--lock);
  cursor: not-allowed;
}

.level-item .badge {
  font-size: 12px;
  flex-shrink: 0;
}

.content {
  flex: 1;
  padding: 28px 36px;
  max-width: 980px;
}

.loading {
  color: var(--muted);
  font-size: 15px;
  padding: 40px 0;
}

.loading-retry-btn {
  margin-top: 14px;
  background: var(--accent);
  color: var(--accent-text);
  border: none;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 8px;
  cursor: pointer;
}

.next-level-btn {
  margin-top: 12px;
  background: var(--accent);
  color: var(--accent-text);
  border: none;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 8px;
  cursor: pointer;
}

.completion-summary {
  margin-top: 16px;
  padding: 16px 18px;
  border-radius: 12px;
  background: var(--success-bg);
  border: 1px solid var(--success-text);
}

.completion-summary-title {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--success-text);
  margin: 0 0 10px;
}

.completion-summary-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.completion-summary-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  color: var(--text);
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

.completion-summary-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.completion-row-title {
  color: var(--muted);
}

.completion-row-count {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

.completion-real-world {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--success-text);
  font-size: 13px;
  color: var(--success-text);
  line-height: 1.6;
}

.hidden { display: none !important; }

.confetti-canvas {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 9999;
}

.level-view h2 {
  margin-top: 0;
}

.explain {
  line-height: 1.7;
  font-size: 15px;
  margin-bottom: 20px;
}

.explain code {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
}

.explain pre {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 12px 14px;
  border-radius: 10px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.5;
}

.code-toggle-btn {
  margin-bottom: 14px;
}

.code-section {
  margin-bottom: 20px;
}

.code-section .hint-box {
  margin-bottom: 0;
}

.code-section .button-row {
  margin-top: 10px;
}

.game-panel {
  max-width: 640px;
}

.terminal-box {
  min-height: 260px;
}

.turn-input-row {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

#turn-input {
  flex: 1;
  background: var(--code-bg);
  color: var(--code-text);
  border: none;
  border-radius: 8px;
  padding: 10px 14px;
  font-family: "SF Mono", Menlo, monospace;
  font-size: 14px;
}

#turn-input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.editor-row {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.editor-col, .output-col {
  flex: 1;
  min-width: 320px;
}

.editor-label {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 6px;
}

#code-editor {
  width: 100%;
  height: 220px;
  background: var(--code-bg);
  color: var(--code-text);
  border: none;
  border-radius: 10px;
  padding: 14px;
  font-family: "SF Mono", Menlo, monospace;
  font-size: 14px;
  line-height: 1.5;
  resize: vertical;
}

.input-row {
  margin-top: 12px;
}

#input-editor {
  width: 100%;
  background: var(--code-bg);
  color: var(--code-text);
  border: none;
  border-radius: 10px;
  padding: 10px 14px;
  font-family: "SF Mono", Menlo, monospace;
  font-size: 13px;
  resize: vertical;
}

.button-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 12px;
}

button {
  border: none;
  border-radius: 8px;
  padding: 9px 16px;
  font-size: 14px;
  cursor: pointer;
  background: var(--accent);
  color: var(--accent-text);
}

button.secondary {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.hint-box {
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--bg);
  border: 1px dashed var(--border);
  font-size: 13px;
  color: var(--muted);
}

/* 连续错3次以上才会冒出来的按钮，需要主动点一下才展开提示（不是自动摆出来的）。 */
.hint-nudge-btn {
  display: block;
  width: 100%;
  margin-top: 12px;
  padding: 8px 14px;
  border-radius: 8px;
  background: var(--fail-bg);
  border: 1px dashed var(--fail-text);
  color: var(--fail-text);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
}

.hint-nudge-btn:hover {
  opacity: 0.85;
}

/* 参考答案：连错3次以上才冒出来的按钮，点了才展开完整代码——不是自动摆出来的。
   跟提示按钮并列，颜色更"正式"一点，跟"这是完整答案"这件事的分量对上。 */
.answer-nudge-btn {
  display: block;
  width: 100%;
  margin-top: 12px;
  padding: 8px 14px;
  border-radius: 8px;
  background: var(--bg);
  border: 1px dashed var(--accent);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
}

.answer-nudge-btn:hover {
  opacity: 0.85;
}

.answer-box {
  margin: 12px 0 0;
  background: var(--code-bg);
  color: var(--code-text);
  border-radius: 8px;
  padding: 12px 14px;
  font-family: "SF Mono", Menlo, monospace;
  font-size: 12.5px;
  white-space: pre-wrap;
  word-break: break-word;
}

.why-box {
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--accent-soft, var(--bg));
  border: 1px dashed var(--accent);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text);
}

.output-box {
  min-height: 220px;
  background: var(--code-bg);
  color: var(--code-text);
  border-radius: 10px;
  padding: 14px;
  font-family: "SF Mono", Menlo, monospace;
  font-size: 13px;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}

.feedback-box {
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
  display: none;
}

.feedback-box.success {
  display: block;
  background: var(--success-bg);
  color: var(--success-text);
}

.feedback-box.fail {
  display: block;
  background: var(--fail-bg);
  color: var(--fail-text);
}

.review-link {
  color: inherit;
  text-decoration: underline;
  font-weight: 600;
  white-space: nowrap;
}

@media (max-width: 640px) {
  .app {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 14px;
  }

  .entry-switch {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4px 14px;
  }

  .level-list {
    flex-direction: row;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 4px;
  }

  .level-item {
    flex-shrink: 0;
    white-space: nowrap;
  }

  .reset-progress-btn {
    width: auto;
    margin: 12px 8px 0;
  }

  .content {
    padding: 20px 16px;
  }

  .editor-col,
  .output-col {
    min-width: 100%;
  }

  .corner-account {
    top: 10px;
    right: 10px;
    width: 168px;
  }

  .corner-account .account-avatar-label {
    display: none;
  }

  .corner-logo {
    top: 10px;
    left: 10px;
    width: 28px;
    height: 28px;
  }
}

/* ---------- 结业证书 ---------- */

a.back-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 14px;
}

.completion-cert-link {
  display: inline-block;
  margin-top: 12px;
  color: var(--success-text);
  font-weight: 600;
  font-size: 13px;
  text-decoration: none;
}

.completion-cert-link:hover {
  text-decoration: underline;
}

.cert-page {
  max-width: 520px;
}

.cert-page .back-link {
  display: inline-block;
  margin-bottom: 20px;
}

.cert-card {
  padding: 40px 32px;
  border: 2px solid var(--accent);
  border-radius: 16px;
  background: var(--panel);
  text-align: center;
}

.cert-brand {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
}

.cert-title {
  font-size: 26px;
  font-weight: 800;
  margin: 10px 0 20px;
}

.cert-name {
  font-size: 20px;
  font-weight: 700;
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.cert-desc {
  color: var(--muted);
  font-size: 13.5px;
  margin: 0 0 12px;
}

.cert-track-list {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14.5px;
  font-weight: 600;
}

.cert-date {
  color: var(--muted);
  font-size: 12.5px;
}

.cert-controls {
  margin-top: 24px;
}

.cert-name-label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 10px;
}

.cert-name-label input {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  font-size: 14px;
}

.cert-btn-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.cert-btn-row button {
  flex: 1;
  min-width: 160px;
}

.cert-compare,
.cert-weak-points {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.cert-compare-title {
  font-size: 16px;
  margin: 0 0 8px;
}

.cert-compare-desc {
  color: var(--muted);
  font-size: 13px;
  margin: 0 0 10px;
  line-height: 1.6;
}

.cert-compare-input {
  width: 100%;
  min-height: 60px;
  padding: 8px 10px;
  margin-bottom: 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  font-size: 12.5px;
  font-family: monospace;
  resize: vertical;
}

.cert-compare-error {
  color: var(--fail-text);
  font-size: 13px;
  margin-top: 10px;
}

#compare-result .cert-track-list {
  margin-top: 14px;
  font-weight: 400;
  font-size: 13.5px;
}

/* ---------- 排行榜 ---------- */

.leaderboard-list {
  list-style: none;
  padding: 0;
  margin: 20px 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: left;
}

.leaderboard-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel);
}

.leaderboard-row-me {
  border-color: var(--accent) !important;
  background: var(--success-bg) !important;
}

.leaderboard-rank {
  flex: none;
  width: 32px;
  font-weight: 700;
  font-size: 15px;
  text-align: center;
}

.leaderboard-name {
  flex: 1;
  font-weight: 600;
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.leaderboard-score {
  flex: none;
  color: var(--muted);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.leaderboard-hint {
  margin-top: 16px;
}

/* ---------- 站长数据后台 ---------- */

.admin-page {
  max-width: 640px;
}

.admin-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 24px 0;
}

.admin-stat-card {
  padding: 18px 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
  text-align: center;
}

.admin-stat-value {
  font-size: 26px;
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.admin-stat-label {
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--muted);
}

.admin-chart-title {
  font-size: 15px;
  margin: 28px 0 12px;
  text-align: left;
}

.admin-chart {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
  padding: 16px 12px 8px;
}

.admin-chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 140px;
}

.admin-chart-bar {
  flex: 1;
  min-width: 4px;
  background: var(--accent);
  border-radius: 3px 3px 0 0;
  position: relative;
  display: flex;
  justify-content: center;
}

.admin-chart-bar-value {
  position: absolute;
  top: -16px;
  font-size: 9px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.admin-chart-axis {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 11.5px;
  color: var(--muted);
}

.admin-chart-empty {
  color: var(--muted);
  font-size: 13.5px;
  text-align: center;
  padding: 20px 0;
}

@media print {
  .no-print {
    display: none !important;
  }

  .landing {
    min-height: 0;
    padding: 0;
  }

  .cert-card {
    border-width: 3px;
  }
}

/* ---------- 连续学习天数 ---------- */

.streak-badge {
  display: inline-block;
  margin: 6px 0 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--success-bg);
  color: var(--success-text);
  font-size: 12.5px;
  font-weight: 700;
}

.landing-inner .streak-badge {
  margin-top: 12px;
}