/* ==========================================================================
   Mediaio 媒体信息 —— 浅色工具风
   设计约束：8px 网格 / 三档字重 / 边框代替阴影 / 绿色只用于交互与关键值
   ========================================================================== */

:root {
  --bg: #f7f8fa;
  --card: #ffffff;
  --ink: #1f2329;
  --ink-2: #646a73;
  --ink-3: #8f959e;
  --ink-4: #bbbfc4;

  --line: #e5e6eb;
  --line-2: #f0f1f2;

  --green: #00a870;
  --green-dark: #008054;
  --green-soft: #e8f7f1;

  --warn: #d46b08;
  --warn-soft: #fff8ed;
  --warn-line: #ffd8a8;

  --danger: #d54941;
  --danger-soft: #fff1f0;

  --info: #1677ff;
  --info-soft: #f0f6ff;

  --radius: 6px;
  --radius-sm: 4px;

  --sans: system-ui, -apple-system, "Segoe UI", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

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

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

button, input { font-family: inherit; }

/* ---------- 站点头 ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 64px;
  padding: 0 max(20px, calc((100vw - 1124px) / 2));
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.site-header > .brand,
.site-header > .site-nav {
  display: inline-flex;
  align-items: center;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
}

.brand-logo {
  height: 20px;
  width: auto;
  display: block;
  flex: none;
}

.brand-name {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.brand-divider {
  width: 1px;
  height: 12px;
  background: var(--line);
}

.brand-sub {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink-2);
}

.site-nav {
  display: inline-flex;
  align-items: center;
  gap: 22px;
  font-size: 13.5px;
  color: var(--ink-2);
}

.site-nav a:hover { color: var(--green-dark); }

.site-nav .nav-cta {
  padding: 5px 14px;
  border: 1px solid var(--green);
  border-radius: 999px;
  color: var(--green-dark);
  font-weight: 600;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.site-nav .nav-cta:hover {
  background: var(--green);
  color: #fff;
  border-color: var(--green);
}

/* ---------- 页面容器 ---------- */

.page {
  flex: 1;
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px 72px;
}

/* ---------- 空态 ---------- */

.intake { padding: 64px 0 40px; }

.intake[hidden] { display: none; }

.intake-head { margin-bottom: 24px; }

.intake-head h1 {
  margin: 0 0 10px;
  font-size: 28px;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.lede {
  margin: 0;
  max-width: 34em;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-2);
}

.usage-stat {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}

.usage-stat[hidden] { display: none; }

.dropzone {
  display: block;
  width: 100%;
  padding: 58px 28px;
  border: 1px dashed #cfd3d9;
  border-radius: var(--radius);
  background: var(--card);
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.dropzone:hover {
  border-color: var(--green);
  background: #fcfefd;
}

.dropzone:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

.dropzone.is-dragover {
  border-color: var(--green);
  border-style: solid;
  background: var(--green-soft);
}

.dropzone-glyph {
  display: block;
  margin: 0 auto 14px;
  width: 40px;
  height: 40px;
  color: #8fc0ac;
  transition: color 0.15s ease;
}

.dropzone:hover .dropzone-glyph,
.dropzone.is-dragover .dropzone-glyph {
  color: var(--green);
}

.dropzone-title {
  display: block;
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.dropzone-hint {
  display: block;
  margin: 0 0 16px;
  font-size: 12.5px;
  color: var(--ink-3);
}

.dropzone-note {
  display: block;
  margin: 0;
  font-size: 11.5px;
  color: var(--ink-4);
}

/* 空态三栏：细线分隔，不是卡片 */

.privacy-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.privacy-strip li {
  padding: 16px 20px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-3);
  border-right: 1px solid var(--line);
}

.privacy-strip li:last-child { border-right: none; }
.privacy-strip li:not(:first-child) { padding-left: 20px; }

.privacy-strip strong {
  display: block;
  margin-bottom: 3px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink);
}

.privacy-strip .mark-privacy {
  display: inline-block;
  margin-left: 2px;
  padding: 0 6px;
  border-radius: 5px;
  background: var(--green-soft);
  color: var(--green-dark);
  font-weight: 600;
  font-size: 0.94em;
  letter-spacing: 0.02em;
}

/* ---------- 进度 ---------- */

.progress-card {
  margin: 28px 0;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.progress-card[hidden] { display: none; }

.progress-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 10px;
}

.progress-name {
  font-size: 13px;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.progress-bytes {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
  flex: none;
}

.progress-track {
  height: 3px;
  border-radius: 2px;
  background: var(--line-2);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 0;
  background: var(--green);
  transition: width 0.18s ease;
}

.progress-bar.is-indeterminate {
  width: 32% !important;
  animation: slide 1.15s ease-in-out infinite;
}

@keyframes slide {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(320%); }
}

.progress-hint {
  margin: 9px 0 0;
  font-size: 11.5px;
  color: var(--ink-4);
}

/* ---------- 错误 ---------- */

.error-box {
  margin: 20px 0;
  padding: 14px 16px;
  border: 1px solid #ffccc7;
  border-left: 3px solid var(--danger);
  border-radius: var(--radius);
  background: var(--danger-soft);
  font-size: 13px;
  line-height: 1.7;
  color: #a8071a;
}

.error-box[hidden] { display: none; }

/* ---------- 结果区 ---------- */

.result[hidden] { display: none; }

.filebar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding: 20px 0 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}

.filebar-name {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  word-break: break-all;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-2);
  white-space: nowrap;
}

.chip-k { color: var(--ink-3); }
.chip-v { color: var(--ink); font-weight: 500; }

.filebar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: none;
}

/* ---------- 按钮 ---------- */

.btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card);
  color: var(--ink-2);
  font: inherit;
  font-size: 12.5px;
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.btn:hover {
  border-color: #c9ccd1;
  background: #fafbfc;
  color: var(--ink);
}

.btn.is-active {
  color: var(--green-dark);
  border-color: rgba(0, 168, 112, 0.4);
  background: var(--green-soft);
}

#btnReset {
  color: var(--green-dark);
  border-color: rgba(0, 168, 112, 0.35);
  background: var(--green-soft);
}

#btnReset:hover {
  color: #fff;
  border-color: var(--green);
  background: var(--green);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn:disabled:hover {
  background: var(--card);
  border-color: var(--line);
  color: var(--ink-2);
}

.btn-accent {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

.btn-accent:hover {
  background: var(--green-dark);
  border-color: var(--green-dark);
  color: #fff;
}

/* 开关 */

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--ink-2);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

.toggle:hover { color: var(--ink); }

.toggle input {
  appearance: none;
  width: 30px;
  height: 17px;
  border-radius: 9px;
  background: #dcdfe4;
  position: relative;
  cursor: pointer;
  transition: background 0.15s ease;
  flex: none;
}

.toggle input::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.15s ease;
}

.toggle input:checked { background: var(--green); }
.toggle input:checked::after { transform: translateX(13px); }

/* ---------- 工作台 ---------- */

.workbench {
  display: grid;
  grid-template-columns: 184px minmax(0, 1fr);
  gap: 0;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
}

.side-nav {
  display: flex;
  flex-direction: column;
  padding: 8px 0 12px;
  border-right: 1px solid var(--line);
  background: var(--card);
  min-height: 420px;
}

.nav-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  width: 100%;
  padding: 8px 14px;
  border: none;
  border-right: 2px solid transparent;
  background: none;
  color: var(--ink-2);
  font: inherit;
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.nav-item:hover {
  background: #fafbfc;
  color: var(--ink);
}

.nav-item.is-active {
  color: var(--green-dark);
  background: var(--green-soft);
  border-right-color: var(--green);
  font-weight: 500;
}

.nav-badge {
  flex: none;
  max-width: 92px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-3);
}

.nav-item.is-active .nav-badge { color: var(--green-dark); }
.nav-badge[data-tone="warn"] { color: var(--warn); font-weight: 600; }
.nav-item.is-active .nav-badge[data-tone="warn"] { color: var(--warn); }

.panels { min-width: 0; padding: 18px 20px 24px; }

.panel { animation: fade-in 0.16s ease both; }
.panel[hidden] { display: none; }

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.panel-lede {
  margin: 0 0 16px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-3);
}

.block-title {
  margin: 0 0 8px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink);
}

.overview-block { margin-bottom: 22px; }

/* ---------- 统计卡 ---------- */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(132px, 1fr));
  gap: 8px;
  margin-bottom: 6px;
}

.stat {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card);
}

.stat-k {
  margin: 0 0 3px;
  font-size: 11.5px;
  color: var(--ink-3);
}

.stat-v {
  margin: 0;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

/* ---------- 兼容性横幅 ---------- */

.compat-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  margin: 14px 0 0;
  padding: 12px 14px;
  border: 1px solid var(--warn-line);
  border-radius: var(--radius-sm);
  background: var(--warn-soft);
  color: var(--ink-2);
  font: inherit;
  font-size: 12.5px;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.compat-banner:hover { border-color: #ffc069; }

.compat-banner.is-ok {
  border-color: #b7ebd3;
  background: var(--green-soft);
}

.compat-more {
  margin-left: auto;
  color: var(--warn);
  font-size: 12px;
  white-space: nowrap;
}

.compat-banner.is-ok .compat-more { color: var(--green-dark); }

/* ---------- 通用表格 ---------- */

.track-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.track-table th {
  padding: 8px 12px;
  text-align: left;
  font-size: 11.5px;
  font-weight: 500;
  color: var(--ink-3);
  background: #fafbfc;
  border-bottom: 1px solid var(--line);
}

.track-table td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--line-2);
  color: var(--ink-2);
  font-variant-numeric: tabular-nums;
}

.track-table tbody tr:last-child td { border-bottom: none; }

.track-table tbody tr { cursor: pointer; }
.track-table tbody tr:hover td { background: #fafbfc; color: var(--ink); }

.track-type {
  display: inline-block;
  padding: 1px 7px;
  border-radius: var(--radius-sm);
  background: var(--green-soft);
  color: var(--green-dark);
  font-size: 11px;
  white-space: nowrap;
}

.track-table td.is-warn { color: var(--warn); }

.field-group { margin-bottom: 20px; }

/* ---------- 章节 / 字幕 ---------- */

.chapter-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.chapter-list li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fafbfc;
}

.chapter-index {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-4);
}

.chapter-time {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-2);
  font-variant-numeric: tabular-nums;
}

/* ---------- 结构检查结论 ---------- */

.struct-notes {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.struct-notes li {
  position: relative;
  padding: 10px 14px 10px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fafbfc;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-2);
  overflow: hidden;
}

.struct-notes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--info);
}

.struct-notes li[data-sev="warn"]::before { background: var(--warn); }
.struct-notes li[data-sev="ok"]::before { background: var(--green); }

.struct-notes strong {
  display: block;
  margin-bottom: 2px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink);
}

/* ---------- box / EBML 树 ---------- */

.box-tree {
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 12px;
}

.box-tree ul {
  margin: 0 0 0 5px;
  padding-left: 14px;
  list-style: none;
  border-left: 1px solid var(--line);
}

.box-tree-plain { font-family: var(--mono); font-size: 12px; }

.ts-l1 { padding-left: 22px; }
.ts-l2 { padding-left: 48px; }

.box-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 2px 6px;
  border-radius: 3px;
}

.box-row:hover { background: #fafbfc; }

.box-type {
  min-width: 46px;
  color: var(--ink-2);
}

.box-type.is-container {
  color: var(--green-dark);
  font-weight: 500;
}

.box-size,
.box-offset,
.box-summary,
.box-cn,
.box-feeds {
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.box-size { color: var(--ink-3); }
.box-offset { color: var(--ink-4); }

.box-cn {
  min-width: 76px;
  color: var(--ink-3);
  font-family: var(--sans);
  font-size: 11.5px;
}

.box-summary { color: var(--ink-3); }
.box-feeds { color: rgba(0, 128, 84, 0.75); }

/* ---------- 诊断条目 ---------- */

.findings {
  margin: 0;
  padding: 0;
  list-style: none;
}

.finding {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 13px 0 13px 18px;
  border-bottom: 1px solid var(--line-2);
}

.finding:last-child { border-bottom: none; }

.finding::before {
  content: "";
  position: absolute;
  left: 0;
  top: 19px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ink-4);
}

.finding[data-sev="warn"]::before { background: var(--warn); }
.finding[data-sev="info"]::before { background: var(--info); }
.finding[data-sev="ok"]::before { background: var(--green); }

.finding-body { min-width: 0; }

.finding-title {
  margin: 0 0 3px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.5;
}

.finding-detail {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--ink-2);
}

.finding-detail code {
  font-family: var(--mono);
  font-size: 11.5px;
  padding: 1px 5px;
  border-radius: 3px;
  background: #f2f3f5;
  color: var(--ink);
}

.finding-detail.finding-alt {
  margin-top: 6px;
  font-size: 12px;
  color: var(--ink-3);
}

.finding-detail a { color: var(--green-dark); }
.finding-detail a:hover { text-decoration: underline; }

.finding-cta {
  flex: none;
  align-self: center;
}

.finding-cta .btn {
  padding: 6px 11px;
  font-size: 12px;
}

.finding-cta .btn-accent {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

.finding-cta .btn-accent:hover {
  background: var(--green-dark);
  border-color: var(--green-dark);
  color: #fff;
}

.finding-cta .btn:not(.btn-accent):hover {
  color: var(--green-dark);
  border-color: rgba(0, 168, 112, 0.4);
  background: var(--green-soft);
}

/* ---------- 无问题态 ---------- */

.empty-ok {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px;
  border: 1px solid #b7ebd3;
  border-radius: var(--radius-sm);
  background: var(--green-soft);
  font-size: 13px;
  color: var(--ink-2);
}

.empty-ok strong { color: var(--green-dark); font-weight: 600; }
.empty-ok span { color: var(--ink-2); }

/* ---------- 概览小结 ---------- */

.summary-line {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 12px 0 0;
  font-size: 12.5px;
  color: var(--ink-2);
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ink-3);
  flex: none;
}

.dot-warn { background: var(--warn); }
.dot-info { background: var(--info); }
.dot-ok { background: var(--green); }

/* ---------- 轨道参数 ---------- */

.track-group { margin-bottom: 18px; }

.track-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 8px;
  font-size: 12.5px;
  color: var(--ink-2);
}

.track-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  background: var(--green-soft);
  color: var(--green-dark);
  font-size: 11.5px;
  font-weight: 500;
  white-space: nowrap;
}

.track-badge[data-type="Audio"] {
  background: var(--info-soft);
  color: #0958d9;
}

.track-badge[data-type="Text"] {
  background: #f6f0ff;
  color: #722ed1;
}

.track-badge[data-type="Menu"],
.track-badge[data-type="Other"] {
  background: #f2f3f5;
  color: var(--ink-2);
}

/* 键值表 */

.kv {
  display: grid;
  grid-template-columns: minmax(132px, 208px) 1fr;
  gap: 1px;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--line-2);
  font-size: 12.5px;
}

.kv dt,
.kv dd {
  margin: 0;
  padding: 6px 12px;
  background: var(--card);
}

.kv dt {
  color: var(--ink-3);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.kv dd {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.kv .is-truncated { cursor: help; }

.more-fields { margin-top: 8px; }

.more-fields summary {
  padding: 5px 2px;
  font-size: 12px;
  color: var(--ink-3);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.more-fields summary::-webkit-details-marker { display: none; }
.more-fields summary::before { content: "▸ "; display: inline-block; }
.more-fields[open] summary::before { content: "▾ "; }
.more-fields summary:hover { color: var(--ink-2); }
.more-fields .kv { margin-top: 6px; }

/* ---------- 杂项 ---------- */

.meta-line {
  margin: 22px 0 0;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-4);
}

.muted {
  color: var(--ink-3);
  font-size: 12.5px;
}

.filebar-actions .toggle { margin-left: 0; }

/* ---------- 许可证长文页 ---------- */

.prose {
  max-width: 720px;
  margin: 40px auto 0;
  padding: 0 0 60px;
}

.prose h1 {
  margin: 0 0 16px;
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.prose h2 {
  margin: 32px 0 10px;
  font-size: 15px;
  font-weight: 600;
}

.prose p,
.prose li {
  color: var(--ink-2);
  font-size: 13.5px;
  line-height: 1.8;
}

.prose > ul { padding-left: 20px; margin: 10px 0; }

.prose code {
  font-family: var(--mono);
  font-size: 12px;
  padding: 1px 5px;
  border-radius: 3px;
  background: #f2f3f5;
  color: var(--ink);
}

.license-block {
  margin: 14px 0;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--green);
  border-radius: var(--radius-sm);
  background: var(--card);
}

.license-block p { margin: 0 0 8px; font-size: 12.5px; line-height: 1.75; }
.license-block ul { margin: 8px 0 12px; padding-left: 20px; }
.license-block ul li { font-size: 12.5px; margin-bottom: 4px; }

.license-caps {
  margin-top: 12px !important;
  font-family: var(--mono);
  font-size: 11px !important;
  color: var(--ink-4) !important;
}

/* ---------- 页脚 ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 8px;
  padding: 18px 28px 40px;
  max-width: 1180px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.site-footer p {
  margin: 0 0 4px;
  font-size: 11.5px;
  line-height: 1.8;
  color: var(--ink-3);
}

.footer-dim { color: var(--ink-4); }

.footer-beian { text-align: center; margin-top: 6px; }
.footer-beian a { color: var(--ink-4); }
.footer-beian a:hover { color: var(--ink-2); }

/* ---------- 响应式 ---------- */

@media (max-width: 860px) {
  .site-header,
  .page,
  .site-footer { padding-left: 18px; padding-right: 18px; }

  .site-nav { gap: 16px; font-size: 12.5px; }
  .brand-sub, .brand-divider { display: none; }

  .intake { padding: 32px 0 24px; }
  .intake-head h1 { font-size: 22px; }
  .dropzone { padding: 32px 18px; }

  .privacy-strip { grid-template-columns: 1fr; }
  .privacy-strip li {
    padding: 12px 0;
    border-right: none;
    border-bottom: 1px solid var(--line);
  }
  .privacy-strip li:not(:first-child) { padding-left: 0; }
  .privacy-strip li:last-child { border-bottom: none; }

  .workbench {
    grid-template-columns: 1fr;
    border-radius: var(--radius);
  }

  .side-nav {
    flex-direction: row;
    gap: 0;
    min-height: 0;
    padding: 0 4px;
    border-right: none;
    border-bottom: 1px solid var(--line);
    overflow-x: auto;
    scrollbar-width: none;
  }

  .side-nav::-webkit-scrollbar { display: none; }

  .nav-item {
    width: auto;
    padding: 10px 10px;
    border-right: none;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
  }

  .nav-item.is-active {
    border-right: none;
    border-bottom-color: var(--green);
    background: none;
  }

  .nav-badge { display: none; }

  .panels { padding: 14px 14px 20px; }

  .filebar { padding-top: 14px; }
  .filebar-actions { width: 100%; flex-wrap: wrap; }
  .filebar-actions .btn { flex: 1; }

  .finding { flex-direction: column; gap: 10px; }
  .finding-cta { align-self: stretch; }
  .finding-cta .btn { width: 100%; }

  .kv { grid-template-columns: 1fr; }
  .kv dt {
    padding-bottom: 0;
    background: var(--card);
    font-size: 11.5px;
    white-space: normal;
    overflow: visible;
  }
  .kv dd {
    padding-top: 2px;
    background: #fafbfc;
  }

  .stat-grid { grid-template-columns: repeat(auto-fill, minmax(118px, 1fr)); }

  /* 窄屏下轨道总表只留三列 */
  .track-table th:nth-child(4),
  .track-table td:nth-child(4),
  .track-table th:nth-child(5),
  .track-table td:nth-child(5) { display: none; }

  .prose { padding: 0 0 40px; }
  .prose h1 { font-size: 21px; }
}