/* ====== 引入 tokens.css 设计令牌（单一源） ====== */
@import url('tokens.css');

/* ====== toolkit 组件级变量（tokens.css 未覆盖的扩展变量） ====== */
:root {
  --ds-toast-bg: rgba(17, 24, 39, 0.92);
  --ds-toast-text: #ffffff;
  --ds-row-hover: rgba(59, 130, 246, 0.08);
  --ds-drop-bg: #eff6ff;
  --ds-drop-border: #bfdbfe;
  --ds-badge-bg: #dbeafe;
  --ds-badge-text: #1d4ed8;
  --ds-ok-bg: #dcfce7;
  --ds-ok-text: #166534;
  --ds-err-bg: #fee2e2;
  --ds-err-text: #991b1b;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ds-toast-bg: rgba(241, 245, 249, 0.95);
    --ds-toast-text: #0b1220;
    --ds-row-hover: rgba(96, 165, 250, 0.12);
    --ds-drop-bg: #111a2e;
    --ds-drop-border: #2a3a5c;
    --ds-badge-bg: #1e3a5f;
    --ds-badge-text: #93c5fd;
    --ds-ok-bg: #14532d;
    --ds-ok-text: #86efac;
    --ds-err-bg: #450a0a;
    --ds-err-text: #fca5a5;
  }
}

html[data-theme="dark"] {
  --ds-toast-bg: rgba(241, 245, 249, 0.95);
  --ds-toast-text: #0b1220;
  --ds-row-hover: rgba(96, 165, 250, 0.12);
  --ds-drop-bg: #111a2e;
  --ds-drop-border: #2a3a5c;
  --ds-badge-bg: #1e3a5f;
  --ds-badge-text: #93c5fd;
  --ds-ok-bg: #14532d;
  --ds-ok-text: #86efac;
  --ds-err-bg: #450a0a;
  --ds-err-text: #fca5a5;
}

html[data-theme="light"] {
  --ds-toast-bg: rgba(17, 24, 39, 0.92);
  --ds-toast-text: #ffffff;
  --ds-row-hover: rgba(59, 130, 246, 0.08);
  --ds-drop-bg: #eff6ff;
  --ds-drop-border: #bfdbfe;
  --ds-badge-bg: #dbeafe;
  --ds-badge-text: #1d4ed8;
  --ds-ok-bg: #dcfce7;
  --ds-ok-text: #166534;
  --ds-err-bg: #fee2e2;
  --ds-err-text: #991b1b;
}

* { box-sizing: border-box; }

body {
  font-family: var(--ds-font);
  background: var(--ds-bg);
  color: var(--ds-text);
  margin: 0;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.ds-container { max-width: 860px; margin: 0 auto; padding: 0 var(--ds-gap); }
.ds-header { border-bottom: 1px solid var(--ds-border); background: var(--ds-bg); position: sticky; top: 0; z-index: 10; }
.ds-header__inner { display: flex; align-items: flex-start; justify-content: space-between; min-height: 64px; padding-top: var(--ds-space-2, 8px); padding-bottom: var(--ds-space-2, 8px); }
.ds-header__brand { display: flex; flex-wrap: wrap; align-items: center; gap: var(--ds-space-2, 8px) var(--ds-space-3, 12px); text-decoration: none; color: var(--ds-text); flex-shrink: 1; min-width: 0; flex: 1; padding-right: var(--ds-space-4, 16px); }
.ds-header__brand-text { display: inline-flex; align-items: center; gap: var(--ds-space-2, 8px); flex-shrink: 0; }
.ds-header__logo { width: 36px; height: 36px; border-radius: 8px; display: inline-block; vertical-align: middle; object-fit: cover; }
.ds-header__title { font-size: 20px; font-weight: 700; }
.ds-header__slogan { font-size: var(--ds-text-xs, 12px); color: var(--ds-accent, #3b82f6); font-weight: 500; letter-spacing: 0.08em; opacity: 0.8; flex-basis: 100%; }
.ds-header__nav { display: flex; align-items: center; gap: var(--ds-space-1, 4px); flex-shrink: 0; }
.ds-header__lang { font-size: 13px; }
.ds-main { padding: 28px 0 40px; }
.ds-hero { text-align: center; margin-bottom: 40px; }
.ds-hero__title { font-size: 32px; margin: 0 0 14px; font-weight: 700; letter-spacing: -0.5px; line-height: 1.3; }
.ds-hero__sub { color: var(--ds-text-muted); margin: 0 auto; font-size: 16px; line-height: 1.8; max-width: 66ch; }
.ds-panel { background: var(--ds-bg-soft); border: 1px solid var(--ds-border); border-radius: var(--ds-radius); padding: 24px; }
.ds-btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 20px; border: 1px solid transparent; border-radius: var(--ds-radius-sm); font-size: 15px; font-weight: 600; cursor: pointer; text-decoration: none; transition: background 0.15s, opacity 0.15s; white-space: nowrap; line-height: 1.2; min-height: 38px; box-sizing: border-box; }
.ds-btn--primary { background: var(--ds-accent); color: var(--ds-on-accent); }
.ds-btn--primary:hover { background: var(--ds-accent-hover); }
.ds-btn--ghost { background: transparent; color: var(--ds-text-soft); border-color: var(--ds-border); }
.ds-btn--ghost:hover { color: var(--ds-text); border-color: var(--ds-accent); }
.ds-btn--sm { padding: 6px 12px; font-size: 13px; }
.ds-field { margin-bottom: 14px; }
.ds-label { display: block; font-size: 13px; font-weight: 500; color: var(--ds-text-soft); margin-bottom: 5px; }
.ds-input { width: 100%; padding: 8px 10px; border: 1px solid var(--ds-border); border-radius: var(--ds-radius-sm); background: var(--ds-bg); color: var(--ds-text); font-size: 14px; font-family: var(--ds-font); }
.ds-input:focus { outline: none; border-color: var(--ds-accent); }
.ds-dropzone { border: 2px dashed var(--ds-drop-border); border-radius: var(--ds-radius); background: var(--ds-drop-bg); padding: 40px 20px; text-align: center; cursor: pointer; transition: border-color 0.15s, background 0.15s; }
.ds-dropzone.is-drag { border-color: var(--ds-accent); background: var(--ds-row-hover); }
.ds-dropzone__text { margin: 0; color: var(--ds-text-soft); font-size: 15px; }
.ds-result__label { color: var(--ds-text-soft); font-size: 13px; white-space: nowrap; }
.ds-badge { display: inline-block; background: var(--ds-badge-bg); color: var(--ds-badge-text); padding: 2px 10px; border-radius: 999px; font-size: 13px; font-weight: 600; }
.ds-badge--ok { background: var(--ds-ok-bg); color: var(--ds-ok-text); }
.ds-badge--err { background: var(--ds-err-bg); color: var(--ds-err-text); }
.ds-badge--warn { background: var(--ds-badge-bg); color: var(--ds-badge-text); }
.ds-code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; word-break: break-all; }
.ds-json { background: var(--ds-bg); border: 1px solid var(--ds-border); border-radius: var(--ds-radius-sm); padding: 12px; font-size: 13px; line-height: 1.6; overflow: auto; max-height: 320px; }
.ds-token { background: var(--ds-bg); border: 1px solid var(--ds-border); border-radius: var(--ds-radius-sm); padding: 12px; font-size: 12px; line-height: 1.6; word-break: break-all; white-space: pre-wrap; }
.ds-result { background: var(--ds-bg); border: 1px solid var(--ds-border); border-radius: var(--ds-radius-sm); padding: 12px; margin-bottom: 10px; }
.ds-canvas-wrap { background: var(--ds-bg); border: 1px solid var(--ds-border); border-radius: var(--ds-radius-sm); padding: 8px; overflow: auto; }
.ds-canvas { display: block; max-width: 100%; height: auto; }
.ds-range-row { display: flex; align-items: center; gap: 10px; }
.ds-range { flex: 1; accent-color: var(--ds-accent); }
.ds-range-val { min-width: 36px; text-align: right; color: var(--ds-text-soft); font-size: 13px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.ds-btn-row { display: flex; flex-wrap: wrap; gap: 10px; }
.ds-grid { display: grid; gap: 8px; }
.ds-grid--2 { grid-template-columns: repeat(2, 1fr); }
.ds-grid--3 { grid-template-columns: repeat(3, 1fr); }
.ds-grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 640px) { .ds-grid--3, .ds-grid--4 { grid-template-columns: repeat(2, 1fr); } }
.ds-chip { display: inline-flex; align-items: center; gap: 6px; background: var(--ds-bg); border: 1px solid var(--ds-border); border-radius: 999px; padding: 3px 10px; font-size: 13px; }
.ds-chip__swatch { width: 14px; height: 14px; border-radius: 3px; border: 1px solid var(--ds-border); }
.ds-textarea--tall { min-height: 200px; }
.ds-file-btn { position: relative; overflow: hidden; }
.ds-file-btn input[type="file"] { position: absolute; left: 0; top: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }
.ds-time { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 14px; }
.ds-wave { width: 100%; height: 120px; background: var(--ds-bg); border: 1px solid var(--ds-border); border-radius: var(--ds-radius-sm); }
.ds-table { width: 100%; border-collapse: collapse; }
.ds-table th, .ds-table td { padding: 8px 10px; text-align: left; border-bottom: 1px solid var(--ds-border); }
.ds-table th { background: var(--ds-bg-soft); color: var(--ds-text-soft); font-weight: 600; }
.ds-seo { max-width: 760px; margin: 48px auto 40px; padding: 28px 32px; background: var(--ds-bg-subtle); border: 1px solid var(--ds-border); border-radius: var(--ds-radius); }
.ds-seo__title { font-size: 20px; margin: 0 0 14px; padding-left: 14px; border-left: 4px solid var(--ds-brand-400); line-height: 1.4; }
.ds-seo p { color: var(--ds-text-muted); font-size: 15px; line-height: 1.9; margin: 0; }
.ds-footer__inner { display: flex; flex-direction: column; align-items: center; gap: 8px; text-align: center; }
.ds-footer__contact { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px; }
.ds-footer__contact a { color: var(--ds-text-soft); text-decoration: none; }
.ds-footer__contact a:hover { color: var(--ds-accent); }
.ds-footer__sep { color: var(--ds-text-soft); opacity: 0.5; }
.ds-footer__copyright { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px; color: var(--ds-text-soft); font-size: 13px; }
.ds-footer__copyright a { color: var(--ds-text-soft); text-decoration: none; }
.ds-footer__copyright a:hover { color: var(--ds-accent); }
.ds-footer__filing { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px; font-size: 12px; color: var(--ds-text-soft); }
.ds-footer__filing a { color: var(--ds-text-soft); text-decoration: none; }
.ds-footer__filing a:hover { color: var(--ds-accent); }
.ds-footer__gongan { display: inline; }
.ds-footer__gongan img { width: 14px; height: 14px; vertical-align: -2px; margin-right: 4px; }
.ds-toast { position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%) translateY(12px); max-width: min(90vw, 420px); padding: 10px 18px; border-radius: var(--ds-radius-sm); background: var(--ds-toast-bg); color: var(--ds-toast-text); font-size: 14px; line-height: 1.5; text-align: center; opacity: 0; transition: opacity 0.3s, transform 0.3s; z-index: 999; pointer-events: none; }
.ds-toast.is-show { opacity: 1; transform: translateX(-50%) translateY(0); }
.lang-zh { display: none; }
html[lang^="zh"] .lang-en { display: none; }
html[lang^="zh"] .lang-zh { display: inline; }
.ds-hidden { display: none !important; }

@media (max-width: 640px) {
  .ds-hero__title { font-size: 26px; }
  .ds-panel { padding: 16px; }
}

/* 移动端：内容不贴边（hero/seo 呼吸感） */
@media (max-width: 480px) {
  .ds-container { padding: 0 20px; }
  .ds-hero { margin-bottom: 32px; }
  .ds-hero__sub { font-size: 15px; }
  .ds-seo { margin: 40px auto 36px; padding: 24px 20px; }
  .ds-seo__title { font-size: 18px; }
  .ds-seo p { font-size: 14px; line-height: 1.85; }
}
.ds-input--lg { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 18px; padding: 12px 14px; letter-spacing: 0.03em; }
.ds-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; }
.ds-meta { color: var(--ds-text-soft); font-size: 13px; }
.ds-thumb { max-width: 100%; max-height: 320px; display: block; margin: 0 auto 10px; border-radius: var(--ds-radius-sm); }
.ds-meter { height: 8px; border-radius: 999px; background: var(--ds-border); overflow: hidden; margin-bottom: 6px; }
.ds-meter__bar { height: 100%; width: 0; border-radius: 999px; transition: width 0.3s, background 0.3s; }
.ds-field--check { display: flex; flex-wrap: wrap; gap: 6px 16px; align-items: center; }
.ds-check { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; cursor: pointer; }
.ds-check input { accent-color: var(--ds-accent); width: 16px; height: 16px; }
.ds-label--error { color: var(--ds-error); }
.ds-error { background: var(--ds-err-bg); color: var(--ds-err-text); border-radius: var(--ds-radius-sm); padding: 10px 12px; font-size: 13px; white-space: pre-wrap; word-break: break-all; }
.ds-empty { color: var(--ds-text-soft); font-size: 14px; text-align: center; padding: 16px; }
.ds-table-wrap { overflow: auto; }
.ds-mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.ds-num { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; text-align: right; }
.ds-result--lg { font-size: 28px; font-weight: 700; }
.ds-input--sm { width: 120px; padding: 7px 10px; }
.ds-badge--bad { background: var(--ds-err-bg); color: var(--ds-err-text); }
.ds-kind { font-size: 12px; font-weight: 600; padding: 1px 8px; border-radius: 999px; white-space: nowrap; }
.ds-kind--add { background: var(--ds-ok-bg); color: var(--ds-ok-text); }
.ds-kind--remove { background: var(--ds-err-bg); color: var(--ds-err-text); }
.ds-kind--change { background: var(--ds-badge-bg); color: var(--ds-badge-text); }
.ds-color { width: 46px; height: 38px; padding: 0; border: 1px solid var(--ds-border); border-radius: var(--ds-radius-sm); background: var(--ds-bg); cursor: pointer; }
.ds-swatch { border: 1px solid var(--ds-border); border-radius: var(--ds-radius); padding: 24px; text-align: center; margin-bottom: 10px; font-size: 16px; }
.ds-swatch__text { font-weight: 600; }
.ds-field--center { text-align: center; }
.ds-coin { width: 140px; height: 140px; border-radius: 50%; background: var(--ds-accent); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 700; margin: 0 auto 16px; box-shadow: 0 4px 14px rgba(0,0,0,0.15); }
.ds-dice-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.ds-die { width: 46px; height: 46px; border-radius: 10px; background: var(--ds-bg); border: 1px solid var(--ds-border); display: inline-flex; align-items: center; justify-content: center; font-weight: 700; font-size: 18px; }
.ds-choices { display: flex; flex-wrap: wrap; gap: 10px; }
.ds-versus { display: flex; align-items: center; justify-content: center; gap: 20px; margin-bottom: 12px; }
.ds-versus__side { text-align: center; }
.ds-versus__emoji { font-size: 48px; display: block; margin-top: 4px; }
.ds-versus__vs { font-size: 20px; font-weight: 700; color: var(--ds-text-soft); }
.ds-input--auto { width: auto; flex: none; }
.ds-row--center { justify-content: center; }
.ds-grid--3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.ds-countdown { display: flex; gap: 12px; justify-content: center; margin-bottom: 12px; }
.ds-countdown__cell { background: var(--ds-bg); border: 1px solid var(--ds-border); border-radius: var(--ds-radius); padding: 12px 16px; min-width: 72px; text-align: center; }
.ds-countdown__cell b { display: block; font-size: 32px; font-variant-numeric: tabular-nums; }
.ds-countdown__cell span { font-size: 12px; color: var(--ds-text-soft); }
.ds-pomodoro { text-align: center; margin-bottom: 14px; }
.ds-pomodoro__phase { font-size: 14px; color: var(--ds-text-soft); margin-bottom: 4px; }
.ds-pomodoro__time { font-size: 56px; font-weight: 700; font-variant-numeric: tabular-nums; }
.ds-winner { display: inline-flex; align-items: center; justify-content: center; background: var(--ds-badge-bg); border: 1px solid var(--ds-border); border-radius: 999px; padding: 8px 18px; font-weight: 600; font-size: 16px; margin: 4px; }
.ds-winner--rolling { background: var(--ds-bg-subtle); border-style: dashed; animation: ds-pulse 0.45s ease-in-out infinite alternate; }
@keyframes ds-pulse { from { transform: scale(0.96); opacity: 0.7; } to { transform: scale(1.04); opacity: 1; } }
.ds-meta { display: flex; flex-wrap: wrap; gap: 10px; }
.ds-meta__item { font-size: 13px; color: var(--ds-text-soft); }
.ds-meta__item .ds-num { margin-left: 4px; }
.ds-legend { display: inline-flex; align-items: center; gap: 6px; margin-right: 12px; }
.ds-diff { display: inline-block; width: 14px; height: 14px; border-radius: 4px; vertical-align: middle; }
.ds-diff--add { background: var(--ds-ok-bg); border: 1px solid var(--ds-ok-text); }
.ds-diff--del { background: var(--ds-err-bg); border: 1px solid var(--ds-err-text); }
.ds-diff-table { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; border: 1px solid var(--ds-border); border-radius: var(--ds-radius); overflow: hidden; }
.ds-diff-row { display: grid; grid-template-columns: 1fr 1fr; }
.ds-diff-row > span { padding: 6px 10px; border-bottom: 1px solid var(--ds-border); white-space: pre-wrap; word-break: break-all; }
.ds-diff-row > span + span { border-left: 1px solid var(--ds-border); }
.ds-diff-row--head { font-family: inherit; font-weight: 600; background: var(--ds-bg-alt, var(--ds-bg)); color: var(--ds-text-soft); }
.ds-diff-row--head > span { border-bottom: 2px solid var(--ds-border); }
.ds-diff--add-text { background: var(--ds-ok-bg); }
.ds-diff--del-text { background: var(--ds-err-bg); }
.ds-hint { font-size: 12px; color: var(--ds-text-soft); margin-top: 8px; }
.ds-hint--inline { display: inline-block; margin: 0 0 0 12px; }
.ds-result-box { background: var(--ds-bg-alt, var(--ds-bg)); border: 1px solid var(--ds-border); border-radius: var(--ds-radius); padding: 20px; text-align: center; margin-bottom: 12px; }
.ds-result-label { font-size: 12px; color: var(--ds-text-soft); margin-bottom: 8px; }
.ds-result--xlg { font-size: 34px; font-weight: 700; word-break: break-all; }
.ds-screen-test { position: fixed; inset: 0; z-index: 9999; background: #000; }
.ds-screen-test canvas { display: block; width: 100%; height: 100%; }
.ds-panel--display { min-height: 200px; }
.ds-display { width: 100%; min-height: 180px; display: flex; align-items: center; justify-content: center; text-align: center; overflow: auto; padding: 16px; line-height: 1.3; }
.ds-panel--dark { background: #111; color: #eee; border-color: #333; }
.ds-result--md { font-size: 20px; font-weight: 600; max-height: 240px; overflow: auto; word-break: break-all; white-space: pre-wrap; text-align: left; }
.ds-text-soft { color: var(--ds-text-soft); }
.ds-keypress { border: 2px dashed var(--ds-border); border-radius: var(--ds-radius); padding: 48px 16px; text-align: center; font-size: 24px; color: var(--ds-text-soft); margin-bottom: 16px; user-select: none; }
.ds-keypress--active { border-style: solid; border-color: var(--ds-accent); color: var(--ds-text); background: var(--ds-bg-alt, var(--ds-bg)); }
.ds-uuid-line { padding: 6px 0; border-bottom: 1px dashed var(--ds-border); font-size: 14px; }

@media (max-width: 480px) {
  .ds-footer__filing { flex-direction: column; gap: 4px; }
  .ds-footer__inner { flex-direction: column; align-items: center; }
}

/* ============================================================
 * IO之道 全局组件（11 任务统一模板）
 * 注入到所有工具页：LOGO/i18n 切换/友链/邮箱 tooltip/隐私声明
 * ============================================================ */

[data-lang-toggle], [data-theme-toggle] {
  font-family: inherit;
  font-size: var(--ds-text-xs);
  font-weight: 500;
  padding: 4px 10px;
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius-sm);
  background: var(--ds-bg);
  color: var(--ds-text);
  cursor: pointer;
  transition: background-color .15s, border-color .15s, color .15s;
}
[data-lang-toggle]:hover, [data-theme-toggle]:hover {
  background: var(--ds-bg-subtle);
  border-color: var(--ds-accent);
  color: var(--ds-accent);
}
[data-lang-toggle]:focus-visible, [data-theme-toggle]:focus-visible {
  outline: 2px solid var(--ds-accent);
  outline-offset: 2px;
}

/* footer 三行减半 */
.ds-footer {
  width: 100%;
  text-align: center;
  padding: var(--ds-space-3) var(--ds-space-4);
  font-size: 12px;
  color: var(--ds-text-muted);
  border-top: 1px solid var(--ds-border);
  background: var(--ds-bg);
  line-height: 1.5;
}
.ds-footer a { color: var(--ds-text-muted); text-decoration: none; }
.ds-footer a:hover { color: var(--ds-accent); }
.ds-footer__sep { margin: 0 6px; opacity: .6; }
.ds-footer__gongan-icon { width: 14px; height: 14px; vertical-align: -2px; margin-right: 4px; }
.ds-footer__email { position: relative; cursor: help; }
.ds-footer__email:hover { color: var(--ds-accent); }

/* 隐私声明 */
.ds-privacy-notice {
  margin: 0;
  padding: var(--ds-space-2) var(--ds-space-3);
  background: var(--ds-bg-subtle);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius-sm);
  text-align: center;
  font-size: var(--ds-text-xs);
  color: var(--ds-text-muted);
  line-height: 1.5;
  margin-top: var(--ds-space-3);
}
.ds-privacy-notice::before { content: "🔒 "; margin-right: 4px; }

/* 邮箱 tooltip 纯 CSS 容器 */
.ds-tooltip {
  position: fixed;
  z-index: 9999;
  pointer-events: none;
  background: var(--ds-text, #1f2937);
  color: var(--ds-bg, #fff);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
  line-height: 1.4;
  max-width: 280px;
  white-space: pre-wrap;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity .12s, transform .12s;
  box-shadow: 0 4px 12px rgba(0,0,0,.18);
}
.ds-tooltip::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  border: 4px solid transparent;
  border-top-color: var(--ds-text, #1f2937);
}
.ds-tooltip.is-show { opacity: 1; transform: translateY(0); }

@media (max-width: 480px) {
  .ds-footer { padding: var(--ds-space-2) var(--ds-space-2); font-size: 11px; }
  .ds-friendlinks { padding: var(--ds-space-2) var(--ds-space-2); font-size: var(--ds-text-xs); }
}
@media (prefers-reduced-motion: reduce) {
  [data-lang-toggle], [data-theme-toggle], .ds-friendlinks__item, .ds-tooltip { transition: none; }
}

/* ============================================================
 * 置顶通知栏（任务 13）
 * ============================================================ */
.ds-notice {
  position: relative;
  width: 100%;
  background: linear-gradient(90deg, var(--ds-accent), var(--ds-accent-hover));
  color: #fff;
  font-size: 13px;
  line-height: 1.4;
  padding: 6px 36px 6px 12px;
  overflow: hidden;
  white-space: nowrap;
  box-sizing: border-box;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
  z-index: 50;
}
.ds-notice__track {
  display: flex;
  overflow: hidden;
  width: 100%;
}
.ds-notice__content {
  display: inline-block;
  white-space: nowrap;
  padding-left: 100%;
  animation-name: ds-notice-scroll;
  animation-duration: var(--ds-notice-dur, 30s);
  animation-timing-function: linear;
  animation-iteration-count: infinite;
  will-change: transform;
}
.ds-notice.is-static .ds-notice__content {
  padding-left: 0;
  animation: none;
  display: block;
  text-align: center;
  white-space: normal;
}
.ds-notice__link {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 2px;
  font-weight: 600;
  transition: opacity 0.15s;
}
.ds-notice__link:hover { opacity: 0.85; }
.ds-notice__sep { opacity: 0.7; margin: 0 2px; }
.ds-notice__close {
  position: absolute;
  top: 50%;
  right: 6px;
  transform: translateY(-50%);
  background: transparent;
  border: 0;
  color: #fff;
  font-size: 18px;
  line-height: 1;
  width: 24px;
  height: 24px;
  border-radius: 4px;
  cursor: pointer;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.15s;
}
.ds-notice__close:hover { background: rgba(255, 255, 255, 0.2); }
.ds-notice__close:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}
.ds-notice.is-hiding { opacity: 0; transform: translateY(-4px); transition: opacity 0.2s, transform 0.2s; }
@keyframes ds-notice-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-100%); }
}
@media (prefers-reduced-motion: reduce) {
  .ds-notice__content { animation: none; padding-left: 0; text-align: center; }
  .ds-notice { white-space: normal; }
}
@media (max-width: 480px) {
  .ds-notice { font-size: 12px; padding: 5px 32px 5px 10px; }
}

/* ============================================================
 * 广告位（任务 12）
 * ============================================================ */
.ds-ad-slot {
  width: 100%;
  display: block;
  margin: var(--ds-space-3) 0;
}
.ds-ad-slot--sidebar {
  display: none;
}
.ds-ad {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60px;
  background: var(--ds-bg-subtle);
  border: 1px dashed var(--ds-border);
  border-radius: var(--ds-radius-sm);
  padding: var(--ds-space-3);
  text-align: center;
  font-size: var(--ds-text-sm);
  color: var(--ds-text-muted);
}
.ds-ad__text { color: var(--ds-text); text-decoration: none; }
.ds-ad__text:hover { color: var(--ds-accent); text-decoration: underline; }
.ds-ad__html { max-width: 100%; overflow: auto; }
.ds-ad__html img { max-width: 100%; height: auto; display: block; margin: 0 auto; }
@media (min-width: 1024px) {
  .ds-ad-slot--sidebar { display: block; }
}

/* ===== 友情链接（全站统一：左对齐） ===== */
.ds-friendlinks-wrap {
  max-width: var(--ds-container-width, 960px);
  margin: var(--ds-space-4) auto var(--ds-space-2);
  padding: 0 var(--ds-space-4);
}
.ds-friendlinks {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: var(--ds-space-2) var(--ds-space-3);
  padding: var(--ds-space-2) var(--ds-space-4);
  background: var(--ds-bg-soft, var(--ds-bg-subtle, #f4f6fb));
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius-sm, 8px);
  font-size: var(--ds-text-xs, 12px);
}
.ds-friendlinks__title {
  color: var(--ds-text-soft, var(--ds-text-muted, #6b7280));
  font-weight: 600;
  margin-right: var(--ds-space-1, 4px);
  white-space: nowrap;
}
.ds-friendlinks__list {
  display: inline-flex;
  flex-wrap: wrap;
  gap: var(--ds-space-2, 8px) var(--ds-space-3, 12px);
  align-items: center;
}
.ds-friendlinks__item {
  color: var(--ds-accent, #3b82f6);
  text-decoration: none;
  transition: color 0.12s ease;
}
.ds-friendlinks__item:hover {
  color: var(--ds-accent-hover, #2563eb);
  text-decoration: underline;
}

/* ===== 隐私声明 ===== */
.ds-privacy-notice-wrap {
  max-width: var(--ds-container-width, 960px);
  margin: var(--ds-space-6, 24px) auto var(--ds-space-2, 8px);
  padding: 0 var(--ds-space-4, 16px);
}
.ds-privacy-notice {
  margin: 0;
  padding: var(--ds-space-2, 8px) var(--ds-space-3, 12px);
  background: var(--ds-bg-soft, var(--ds-bg-subtle, #f4f6fb));
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius-sm, 8px);
  text-align: center;
  font-size: var(--ds-text-xs, 12px);
  color: var(--ds-text-soft, var(--ds-text-muted, #6b7280));
  line-height: 1.5;
}
.ds-privacy-notice::before {
  content: "🔒 ";
  margin-right: 4px;
}

/* ===== 页脚（全站统一：蓝色链接） ===== */
.ds-footer {
  border-top: 1px solid var(--ds-border);
  padding: var(--ds-space-3, 12px) var(--ds-space-4, 16px);
  text-align: center;
  color: var(--ds-text-soft, var(--ds-text-muted, #6b7280));
  font-size: var(--ds-text-xs, 12px);
  line-height: 1.5;
}
.ds-footer a {
  color: var(--ds-accent, #3b82f6);
  text-decoration: none;
  transition: color 0.12s ease;
}
.ds-footer a:hover {
  color: var(--ds-accent-hover, #2563eb);
  text-decoration: underline;
}
.ds-footer__row { margin-bottom: var(--ds-space-1, 4px); display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: var(--ds-space-1, 4px); }
.ds-footer__row:last-child { margin-bottom: 0; }
.ds-footer__sep { color: var(--ds-text-soft, var(--ds-text-muted, #6b7280)); opacity: 0.5; margin: 0 var(--ds-space-1, 4px); }
.ds-footer__copyright { color: var(--ds-text-soft, var(--ds-text-muted, #6b7280)); }
.ds-footer__gongan { display: inline; }
.ds-footer__gongan img { width: 14px; height: 14px; vertical-align: -2px; margin-right: 4px; }

/* 抛掷动画组件（coin-flip / dice-roller，对标 flipacoin 动效） */
.ds-coin { width: 96px; height: 96px; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #ffd75e, #d9a514); border: 4px solid #b8860b; display: inline-flex; align-items: center; justify-content: center; font-weight: 800; font-size: 16px; color: #5c4300; margin: 0 auto 16px; box-shadow: 0 6px 16px rgba(0, 0, 0, 0.18); transition: transform 0.15s; }
.ds-coin.is-flipping { animation: ds-flip 0.5s ease-in-out; }
.ds-coin.is-heads { transform: rotateY(0); }
.ds-coin.is-tails { transform: rotateY(180deg); }
@keyframes ds-flip { 0% { transform: rotateY(0); } 50% { transform: rotateY(180deg); } 100% { transform: rotateY(360deg); } }
.ds-die.is-rolling { animation: ds-shake 0.5s ease-in-out; }
@keyframes ds-shake { 0%, 100% { transform: translateY(0); } 20% { transform: translateY(-8px) rotate(-8deg); } 40% { transform: translateY(6px) rotate(8deg); } 60% { transform: translateY(-5px) rotate(-5deg); } 80% { transform: translateY(4px) rotate(4deg); } }
.ds-table--zebra tbody tr:nth-child(even) { background: var(--ds-bg-subtle); }
.ds-table--zebra .ds-copy-row:hover td { background: var(--ds-row-hover); }
/* ============ 上传区组件（文件类工具统一） ============ */
.ds-upload { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; padding: 40px 20px; border: 2px dashed var(--ds-drop-border); border-radius: var(--ds-radius); background: var(--ds-drop-bg); text-align: center; cursor: pointer; transition: border-color 0.15s, background 0.15s; }
.ds-upload:hover, .ds-upload.is-drag { border-color: var(--ds-accent); background: var(--ds-row-hover); }
.ds-upload__hint { margin: 0; color: var(--ds-text-soft); font-size: 14px; }