/* ============================================================
   ssstool.cn 直播工具箱 · 全站样式
   深蓝主导:墨水海军蓝 hero + 冷白内容区,琥珀色仅作点缀
   ============================================================ */

:root {
  /* 色板 */
  --ink:        #0A1B2E;   /* 墨蓝,浅色区标题文字 */
  --navy-950:   #071324;   /* 最深底 */
  --navy-900:   #0C2440;   /* 深色区底色 */
  --navy-850:   #102E50;   /* 深色区面板 */
  --navy-700:   #1C4571;   /* 深色区边线 */
  --blue-600:   #1E6FD9;   /* 主交互蓝 */
  --blue-500:   #3D8BF2;   /* hover 蓝 */
  --blue-050:   #EAF2FC;   /* 浅蓝底 */
  --blue-100:   #D8E8FA;
  --sky-300:    #8FB8E8;   /* 深底次要文字 */
  --sky-200:    #B9D4F2;
  --mist-050:   #F5F8FC;   /* 页面浅底 */
  --mist-100:   #EDF3F9;
  --line-200:   #D9E3EF;   /* 浅区分隔线 */
  --amber-400:  #F5A623;   /* 唯一强调点缀:最新徽章 */
  --amber-050:  #FDF3E1;
  --live-red:   #FF5252;
  --text-1:     #0A1B2E;
  --text-2:     #3E556C;   /* 浅区正文 */
  --text-3:     #6E8299;   /* 浅区辅助 */
  --on-dark-1:  #EDF4FC;   /* 深区主文字 */
  --on-dark-2:  #9FBBDD;   /* 深区次要文字 */

  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;

  --radius: 8px;
  --radius-lg: 14px;
  --ring: 0 0 0 3px rgba(61, 139, 242, 0.4);
  --shadow-pop: 0 18px 50px -18px rgba(4, 16, 34, 0.55);
}

/* ---------- 基础 ---------- */

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text-2);
  background: var(--mist-050);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  color: var(--text-1);
  line-height: 1.3;
  margin: 0;
  letter-spacing: 0.015em;
  font-weight: 650;
}

p { margin: 0; }

a { color: var(--blue-600); text-decoration: none; }

:focus-visible {
  outline: none;
  box-shadow: var(--ring);
  border-radius: 4px;
}

::selection { background: var(--blue-100); }

.container {
  width: min(1060px, 100% - 48px);
  margin-inline: auto;
}

@media (max-width: 640px) {
  .container { width: min(1060px, 100% - 32px); }
}

.mono { font-family: var(--mono); }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute;
  left: 16px; top: -48px;
  z-index: 100;
  background: var(--navy-900);
  color: #fff;
  padding: 8px 14px;
  border-radius: 0 0 8px 8px;
  transition: top 0.15s ease;
}
.skip-link:focus { top: 0; }

/* ---------- 顶部导航 ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 27, 46, 0.92);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(140, 176, 220, 0.16);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 60px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  font-size: 16.5px;
  color: var(--on-dark-1);
  letter-spacing: 0.01em;
}

.brand-mark {
  display: inline-flex;
  width: 32px; height: 32px;
  border-radius: 8px;
  overflow: hidden;
}

.brand-mark svg { display: block; width: 100%; height: 100%; }

.brand-sub {
  font-size: 13px;
  font-weight: 400;
  color: var(--on-dark-2);
  padding-left: 10px;
  border-left: 1px solid rgba(140, 176, 220, 0.25);
}

.site-nav { display: flex; gap: 4px; }

.site-nav a {
  color: var(--sky-200);
  font-size: 14.5px;
  padding: 7px 13px;
  border-radius: 7px;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.site-nav a:hover { color: #fff; background: rgba(140, 176, 220, 0.14); }

.site-nav a[aria-current="page"] {
  color: #fff;
  background: rgba(61, 139, 242, 0.22);
}

@media (max-width: 560px) {
  .brand-sub { display: none; }
  .site-nav a { padding: 7px 9px; font-size: 14px; }
}

/* ---------- 首页 hero ---------- */

.hero {
  background:
    radial-gradient(1100px 460px at 78% -12%, rgba(30, 111, 217, 0.28), transparent 62%),
    linear-gradient(180deg, var(--navy-950), var(--navy-900) 58%, #0D2A4C);
  color: var(--on-dark-1);
  padding: 72px 0 84px;
  border-bottom: 1px solid rgba(140, 176, 220, 0.14);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 500px);
  gap: 56px;
  align-items: center;
}

.hero h1 {
  color: #fff;
  font-size: clamp(32px, 4.6vw, 50px);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: 0.02em;
  margin-bottom: 18px;
}

.hero-lede {
  font-size: 16.5px;
  color: var(--on-dark-2);
  max-width: 30em;
  margin-bottom: 30px;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

@media (max-width: 880px) {
  .hero { padding: 52px 0 60px; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-lede { max-width: none; }
}

/* 按钮 */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  padding: 11px 20px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.1s ease;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--blue-600);
  color: #fff;
}
.btn-primary:hover { background: var(--blue-500); }

.btn-ghost {
  background: transparent;
  color: var(--sky-200);
  border-color: rgba(159, 187, 221, 0.4);
}
.btn-ghost:hover { color: #fff; border-color: rgba(185, 212, 242, 0.75); }

.btn-light {
  background: #fff;
  color: var(--blue-600);
}
.btn-light:hover { background: var(--blue-050); }

.btn-sm { font-size: 13.5px; padding: 7px 13px; border-radius: 7px; }

/* 直播预览监视器 —— 站点的记忆点 */

.monitor {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--navy-950);
  border: 1px solid rgba(140, 176, 220, 0.22);
  box-shadow: var(--shadow-pop);
}

.monitor-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: rgba(12, 36, 64, 0.9);
  border-bottom: 1px solid rgba(140, 176, 220, 0.16);
}

.monitor-dots { display: inline-flex; gap: 6px; }
.monitor-dots i {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(159, 187, 221, 0.3);
}

.monitor-title {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--on-dark-2);
}

.monitor-rec {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--sky-200);
}

.rec-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--live-red);
  animation: pulse 1.6s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.monitor-screen { position: relative; aspect-ratio: 16 / 9; }

.screen-scene {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(120% 90% at 50% -10%, #1B4E8A 0%, #0E3057 44%, var(--navy-950) 100%);
}

/* 演播室光斑 */
.screen-scene::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(280px 190px at 24% 30%, rgba(120, 175, 235, 0.18), transparent 70%),
    radial-gradient(320px 220px at 78% 24%, rgba(61, 139, 242, 0.14), transparent 70%);
}

/* 画面水印 */
.screen-mark {
  position: absolute;
  top: 12px; right: 16px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: rgba(237, 244, 252, 0.34);
  z-index: 2;
}

.screen-bars {
  margin-top: auto;
  height: 34%;
  background: linear-gradient(90deg,
    #b9b9b9 0 14.28%,
    #b9b900 0 28.57%,
    #00b9b9 0 42.85%,
    #00b900 0 57.14%,
    #b900b9 0 71.42%,
    #b90000 0 85.71%,
    #0000b9 0 100%);
  position: relative;
}

/* 彩条上叠灰阶细条,更接近测试卡 */
.screen-bars::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 22%;
  background: linear-gradient(90deg,
    #0c0c0c 0 14.28%,
    #dedede 0 28.57%,
    #0c0c0c 0 42.85%,
    #dedede 0 57.14%,
    #0c0c0c 0 71.42%,
    #dedede 0 85.71%,
    #0c0c0c 0 100%);
}

/* 渐晕把画面压进深蓝氛围 */
.monitor-screen::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(7, 19, 36, 0.42), transparent 30%, transparent 68%, rgba(7, 19, 36, 0.5));
  border-radius: inherit;
}

.live-tag {
  position: absolute;
  top: 12px; left: 16px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #fff;
  background: rgba(7, 19, 36, 0.62);
  border: 1px solid rgba(255, 82, 82, 0.55);
  padding: 4px 10px;
  border-radius: 999px;
}

.live-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--live-red);
  animation: pulse 1.6s ease-in-out infinite;
}

.screen-status {
  position: absolute;
  left: 16px; bottom: 12px;
  z-index: 2;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: rgba(237, 244, 252, 0.72);
  background: rgba(7, 19, 36, 0.62);
  padding: 4px 10px;
  border-radius: 999px;
}

@media (prefers-reduced-motion: reduce) {
  .rec-dot, .live-dot { animation: none; }
  * { transition-duration: 0.01ms !important; }
}

/* ---------- 浅色内容区通用 ---------- */

.section { padding: 64px 0; }

.section-head { max-width: 40em; margin-bottom: 34px; }

.section-head h2 { font-size: 24px; margin-bottom: 8px; }

.section-head p { color: var(--text-3); font-size: 14.5px; }

/* 工具清单 */

.tool-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-200);
}

.tool-row {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  padding: 20px 12px;
  border-bottom: 1px solid var(--line-200);
  transition: background-color 0.15s ease;
}

.tool-row:hover { background: #fff; }

.tool-mark {
  display: inline-grid;
  place-items: center;
  width: 46px; height: 46px;
  border-radius: 10px;
  background: var(--navy-900);
  color: var(--sky-200);
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.03em;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.tool-row:hover .tool-mark { background: var(--blue-600); color: #fff; }

.tool-body { display: grid; gap: 3px; min-width: 0; }

.tool-name {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 16.5px;
  font-weight: 650;
  color: var(--text-1);
}

.tool-tag {
  font-style: normal;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 1.5px 8px;
  border-radius: 999px;
  background: var(--blue-050);
  color: var(--blue-600);
}

.tool-tag.ext { background: var(--mist-100); color: var(--text-3); }

.tool-desc { font-size: 14px; color: var(--text-3); }

.tool-go {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--blue-600);
  white-space: nowrap;
  padding: 6px 2px;
}

.tool-row:hover .tool-go { text-decoration: underline; text-underline-offset: 4px; }

@media (max-width: 560px) {
  .tool-row { grid-template-columns: 40px minmax(0, 1fr); }
  .tool-mark { width: 40px; height: 40px; border-radius: 9px; font-size: 11px; }
  .tool-go { display: none; }
}

/* 收录说明条 */

.pledge {
  margin-top: 40px;
  padding: 18px 22px;
  border: 1px solid var(--line-200);
  border-radius: var(--radius);
  background: #fff;
  color: var(--text-2);
  font-size: 14px;
}

.pledge strong { color: var(--text-1); }

/* ---------- 内页:深蓝页头 ---------- */

.page-hero {
  background:
    radial-gradient(900px 320px at 82% -20%, rgba(30, 111, 217, 0.3), transparent 60%),
    linear-gradient(180deg, var(--navy-950), #0D2A4C);
  color: var(--on-dark-1);
  padding: 40px 0 44px;
  border-bottom: 1px solid rgba(140, 176, 220, 0.14);
}

.crumb {
  display: inline-block;
  font-size: 13.5px;
  color: var(--sky-300);
  margin-bottom: 18px;
}
.crumb:hover { color: #fff; }

.page-hero h1 {
  color: #fff;
  font-size: clamp(26px, 3.4vw, 36px);
  margin-bottom: 10px;
}

.page-hero .lede {
  color: var(--on-dark-2);
  font-size: 15.5px;
  max-width: 44em;
}

/* ---------- OBS 版本页 ---------- */

.latest-panel {
  margin-top: 30px;
  background: var(--navy-850);
  border: 1px solid rgba(140, 176, 220, 0.22);
  border-radius: var(--radius-lg);
  padding: 26px 28px;
  display: grid;
  grid-template-columns: minmax(0, auto) minmax(0, 1fr);
  gap: 14px 40px;
  align-items: center;
}

@media (max-width: 760px) {
  .latest-panel { grid-template-columns: 1fr; padding: 22px; }
}

.latest-label { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }

.badge-latest {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #5C3D00;
  background: var(--amber-400);
  padding: 3px 10px;
  border-radius: 999px;
}

.latest-version {
  font-family: var(--mono);
  font-size: clamp(30px, 4vw, 42px);
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.01em;
  line-height: 1.1;
}

.latest-meta { font-size: 13px; color: var(--on-dark-2); }

.latest-files {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.latest-notes {
  grid-column: 1 / -1;
  font-size: 13.5px;
  color: var(--on-dark-2);
  border-top: 1px dashed rgba(140, 176, 220, 0.25);
  padding-top: 14px;
}

/* 版本列表 */

.ver-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-200);
}

.ver-row {
  display: grid;
  grid-template-columns: 128px 118px minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 16px 12px;
  border-bottom: 1px solid var(--line-200);
}

.ver-row:hover { background: #fff; }

.ver-num {
  font-family: var(--mono);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--text-1);
}

.ver-date { font-size: 13px; color: var(--text-3); font-family: var(--mono); }

.ver-note { font-size: 13px; color: var(--text-3); min-width: 0; overflow-wrap: anywhere; }

.ver-files { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }

.file-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 7px;
  border: 1px solid var(--line-200);
  background: #fff;
  color: var(--text-2);
  transition: border-color 0.15s ease, color 0.15s ease, background-color 0.15s ease;
}

.file-btn:hover { border-color: var(--blue-600); color: var(--blue-600); background: var(--blue-050); }

.file-btn .ext-name { font-family: var(--mono); font-size: 10.5px; color: var(--text-3); }

@media (max-width: 760px) {
  .ver-row {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "num date"
      "note note"
      "files files";
    row-gap: 8px;
  }
  .ver-num { grid-area: num; }
  .ver-date { grid-area: date; text-align: right; }
  .ver-note { grid-area: note; }
  .ver-files { grid-area: files; justify-content: flex-start; }
}

/* ---------- M3U8 播放页 ---------- */

.player-panel {
  margin-top: -34px;
  position: relative;
  z-index: 1;
}

.url-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  padding: 18px;
  background: #fff;
  border: 1px solid var(--line-200);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 34px -20px rgba(10, 27, 46, 0.35);
}

.url-input {
  font-family: var(--mono);
  font-size: 14px;
  padding: 12px 14px;
  border: 1px solid var(--line-200);
  border-radius: var(--radius);
  color: var(--text-1);
  background: var(--mist-050);
  min-width: 0;
}

.url-input:focus {
  outline: none;
  border-color: var(--blue-600);
  background: #fff;
  box-shadow: var(--ring);
}

.url-input::placeholder { color: var(--text-3); font-family: var(--sans); }

@media (max-width: 560px) {
  .url-form { grid-template-columns: 1fr; }
}

.form-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin: 12px 4px 20px;
  font-size: 13px;
  color: var(--text-3);
}

.form-tools .link-btn {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  color: var(--blue-600);
  cursor: pointer;
}
.form-tools .link-btn:hover { text-decoration: underline; text-underline-offset: 3px; }

.form-status {
  margin-left: auto;
  font-size: 12.5px;
  color: var(--text-3);
}
.form-status.err { color: #C0392B; }

.player-shell {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--navy-950);
  border: 1px solid var(--line-200);
}

.player-placeholder {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: grid;
  place-items: center;
  gap: 10px;
  background:
    radial-gradient(120% 100% at 50% 0%, #12335C 0%, var(--navy-950) 70%);
  color: var(--on-dark-2);
  font-size: 14.5px;
  text-align: center;
  padding: 20px;
  cursor: pointer;
}

/* hidden 属性必须压过上面的 display: grid,否则遮罩永远盖住播放器 */
.player-placeholder[hidden] { display: none; }

.player-placeholder .ph-icon {
  width: 62px; height: 62px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(61, 139, 242, 0.18);
  border: 1px solid rgba(61, 139, 242, 0.5);
  margin-bottom: 4px;
}

.player-placeholder .ph-icon svg { display: block; }

.player-wrap { position: relative; aspect-ratio: 16 / 9; }

.video-js { width: 100%; height: 100%; }

.player-hints {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-3);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
}

.player-hints[hidden] { display: none; }

/* ---------- 媒体信息面板 ---------- */

/* 控制栏上的"媒体信息"按钮(video.js 自定义组件) */
.vjs-mi-toggle {
  width: 4.5em;
}

.vjs-mi-toggle .vjs-icon-placeholder { display: none; }

.vjs-mi-toggle svg {
  display: block;
  width: 16px;
  height: 16px;
  margin: 0 auto;
}

/* 按下态:面板开着时按钮保持高亮 */
.vjs-mi-toggle.vjs-mi-on {
  color: #fff;
}

.vjs-mi-toggle.vjs-mi-on::before {
  content: "";
  position: absolute;
  left: 20%;
  right: 20%;
  bottom: 3px;
  height: 2px;
  border-radius: 2px;
  background: var(--amber-400);
}

.mi-panel {
  margin-top: 14px;
  background: var(--navy-950);
  border: 1px solid var(--line-200);
  border-radius: var(--radius);
  overflow: hidden;
}

.mi-panel[hidden] { display: none; }

.mi-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  border-bottom: 1px solid rgba(140, 176, 220, 0.16);
}

.mi-head h3 {
  color: var(--on-dark-1);
  font-size: 14.5px;
  margin: 0;
}

.mi-head-actions { display: flex; gap: 14px; }

.mi-link {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  font-size: 12.5px;
  color: var(--sky-300);
  cursor: pointer;
}

.mi-link:hover { color: #fff; text-decoration: underline; text-underline-offset: 3px; }

.mi-body {
  display: grid;
  gap: 0;
  padding: 6px 18px 16px;
  max-height: 420px;
  overflow-y: auto;
}

.mi-sec {
  padding: 12px 0 4px;
}

.mi-sec + .mi-sec { border-top: 1px dashed rgba(140, 176, 220, 0.2); }

.mi-sec-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--sky-300);
  margin: 0 0 8px;
}

.mi-rows { display: grid; gap: 5px; }

.mi-row {
  display: grid;
  grid-template-columns: 9.5em minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  font-size: 13px;
  line-height: 1.6;
}

.mi-k { color: var(--on-dark-2); }

.mi-v {
  color: var(--on-dark-1);
  font-family: var(--mono);
  font-size: 12.5px;
  overflow-wrap: anywhere;
}

.mi-v .dim { color: var(--on-dark-2); }

.mi-v.is-cur {
  color: var(--amber-400);
  font-weight: 700;
}

.mi-bad { color: #FF8A80 !important; }

@media (max-width: 560px) {
  .mi-row { grid-template-columns: 7.5em minmax(0, 1fr); gap: 10px; }
  .mi-body { max-height: 320px; }
}

/* 常见问题 */

.faq { margin-top: 48px; }.faq h2 { font-size: 20px; margin-bottom: 16px; }

.faq details {
  border-bottom: 1px solid var(--line-200);
  padding: 4px 4px;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text-1);
  font-size: 15px;
  padding: 12px 0;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: "";
  width: 9px; height: 9px;
  border-right: 2px solid var(--text-3);
  border-bottom: 2px solid var(--text-3);
  transform: rotate(45deg);
  transition: transform 0.15s ease;
  flex: none;
}

.faq details[open] summary::after { transform: rotate(225deg); }

.faq details p { padding: 0 0 14px; font-size: 14px; color: var(--text-2); max-width: 46em; }

.faq code {
  font-family: var(--mono);
  font-size: 12.5px;
  background: var(--mist-100);
  padding: 1px 6px;
  border-radius: 5px;
  color: var(--text-1);
}

/* ---------- 页脚 ---------- */

.site-footer {
  margin-top: 72px;
  background: var(--navy-950);
  color: var(--on-dark-2);
  border-top: 1px solid rgba(140, 176, 220, 0.14);
  font-size: 13.5px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 28px;
  padding: 30px 0;
}

.footer-brand { display: flex; align-items: center; gap: 10px; color: var(--on-dark-1); font-weight: 650; }

.footer-brand .brand-mark { width: 26px; height: 26px; border-radius: 7px; }

.footer-nav { display: flex; flex-wrap: wrap; gap: 4px 20px; }

.footer-nav a { color: var(--on-dark-2); }
.footer-nav a:hover { color: #fff; }

.footer-legal { width: 100%; padding: 14px 0 22px; color: rgba(159, 187, 221, 0.55); font-size: 12.5px; }

/* ---------- video.js 细节覆盖 ---------- */

.video-js .vjs-big-play-button {
  border-radius: 50%;
  width: 68px; height: 68px;
  line-height: 68px;
  border: none;
  background: rgba(30, 111, 217, 0.85);
}

.video-js:hover .vjs-big-play-button { background: var(--blue-500); }