/* ============================================================
   Yarbo Troubleshooting Site — Styles
   Palette / type follows Yarbo's own brand identity: warm black
   surfaces, signature gold accent (#E1C04A), umber for text-safe
   gold, Poppins for display headings, Inter for body, system CJK
   stack for zh/ja/ko.
   ============================================================ */

:root {
  --bg: #fffefa;
  --bg-soft: #fdf5da;
  --bg-soft-2: #fbedc0;
  --ink: #15130e;
  --ink-secondary: #55503f;
  --ink-faint: #7a7361;
  --border: #ecdfa8;
  --primary: #e1c04a;
  --primary-dark: #b89a2f;
  --primary-text: #86691c;
  --primary-soft: #faf3d9;
  --accent-umber: #7d5112;
  --danger: #d1284a;
  --danger-soft: #fbe9ee;
  --success: #12805c;
  --success-soft: #e3f7ef;
  --radius-s: 6px;
  --radius-m: 10px;
  --radius-l: 16px;
  --shadow-card: 0 2px 5px -1px rgba(20, 18, 10, 0.1), 0 1px 3px -1px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 6px 16px -4px rgba(20, 18, 10, 0.2), 0 3px 6px -2px rgba(0, 0, 0, 0.12);
  --font-latin: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: "Poppins", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-cjk: "PingFang SC", "Hiragino Sans", "Malgun Gothic", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --max-width: 1120px;
  --header-max-width: 1360px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-latin), var(--font-cjk);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3,
.page-title, .hero h1, .intro-heading, .intro-subheading,
.update-title, .mm-root, .qa-question, .category-card-title,
.code-title, .brand span, .video-module-title {
  font-family: var(--font-display), var(--font-cjk);
}

:lang(zh) body, [lang="zh"] { font-family: var(--font-cjk), var(--font-latin); }

a { color: inherit; }

button { font-family: inherit; }

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

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--primary);
  border-bottom: 1px solid var(--primary-dark);
}

.header-inner {
  max-width: var(--header-max-width);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  text-decoration: none;
  color: var(--ink);
  white-space: nowrap;
}

.brand-word {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.brand-tagline {
  font-size: 13px;
  font-weight: 400;
  color: rgba(21, 19, 14, 0.6);
  padding-left: 9px;
  border-left: 1px solid rgba(21, 19, 14, 0.25);
  white-space: nowrap;
}

.brand-mark {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: none;
  background: none;
  color: var(--ink);
  cursor: pointer;
  flex-shrink: 0;
  margin-left: auto;
}

.main-nav {
  display: flex;
  gap: 2px;
  flex: 1;
  flex-wrap: wrap;
  justify-content: center;
}

.main-nav a {
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: rgba(21, 19, 14, 0.68);
  padding: 9px 9px;
  border-radius: var(--radius-s);
  white-space: nowrap;
  transition: background 0.15s, color 0.15s;
}

.main-nav a:hover { background: rgba(21, 19, 14, 0.08); color: var(--ink); }
.main-nav a.active { color: #fff; background: var(--ink); }

.lang-globe-wrap { position: relative; flex-shrink: 0; margin-left: auto; }

.lang-globe {
  display: flex;
  align-items: center;
  gap: 6px;
  border: 1px solid rgba(21, 19, 14, 0.35);
  background: transparent;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.lang-globe:hover { border-color: rgba(21, 19, 14, 0.6); background: rgba(21, 19, 14, 0.06); }
.lang-globe svg { flex-shrink: 0; }

.lang-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-hover);
  padding: 6px;
  min-width: 130px;
  z-index: 50;
}

.lang-dropdown.open { display: block; }

.lang-dropdown button {
  display: block;
  width: 100%;
  text-align: left;
  border: none;
  background: none;
  padding: 8px 10px;
  border-radius: var(--radius-s);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  transition: background 0.15s;
}

.lang-dropdown button:hover { background: var(--bg-soft); }
.lang-dropdown button.active { color: var(--primary-text); font-weight: 700; background: var(--primary-soft); }

/* ---------- Search bar ---------- */

.search-bar {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 24px;
}

.search-box {
  position: relative;
}

.search-input {
  width: 100%;
  font-size: 15px;
  padding: 12px 16px 12px 42px;
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  background: var(--bg-soft);
  color: var(--ink);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}

.search-input:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px var(--primary-soft);
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--ink-faint);
  pointer-events: none;
}

.search-hint {
  margin: 6px 2px 0;
  font-size: 12.5px;
  color: var(--ink-faint);
}

.search-results {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-hover);
  max-height: 340px;
  overflow-y: auto;
  z-index: 30;
  display: none;
}

.search-results.open { display: block; }

.search-result-item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 12px 16px;
  border: none;
  background: none;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  font-size: 13.5px;
}

.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover { background: var(--bg-soft); }

.search-result-kind {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--primary-text);
  margin-bottom: 3px;
}

.search-result-title { font-weight: 600; color: var(--ink); }
.search-result-path { color: var(--ink-faint); font-size: 12.5px; margin-top: 2px; }
.search-empty { padding: 16px; font-size: 13.5px; color: var(--ink-faint); }

/* ---------- Layout shell ---------- */

main { min-height: 60vh; }

.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 24px 96px;
}

.page-header { margin-bottom: 32px; }

.page-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

.page-subtitle {
  font-size: 16px;
  color: var(--ink-secondary);
  margin: 0;
  max-width: 640px;
}

/* ---------- Empty states (Introduction / Videos / Updates) ---------- */

.empty-state {
  border: 1px dashed var(--border);
  border-radius: var(--radius-l);
  padding: 64px 32px;
  text-align: center;
  background: var(--bg-soft);
}

.empty-state-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 16px;
  color: var(--primary-text);
  opacity: 0.55;
}

.empty-state p {
  color: var(--ink-secondary);
  font-size: 15px;
  margin: 0;
}

/* ---------- Hero (Introduction) ---------- */

.hero {
  border-radius: var(--radius-l);
  background: linear-gradient(135deg, #fff6db 0%, #ffe8a0 55%, #f2cd5a 100%);
  color: var(--ink);
  padding: 64px 40px;
  margin-bottom: 40px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--primary-dark);
}

.hero::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(21, 19, 14, 0.1), transparent 70%);
}

.hero h1 {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  max-width: 560px;
  position: relative;
}

.hero p {
  font-size: 16px;
  color: rgba(21, 19, 14, 0.72);
  max-width: 520px;
  margin: 0;
  position: relative;
}

/* ---------- Introduction content ---------- */

.intro-section {
  margin-bottom: 36px;
}

.intro-heading {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin: 0 0 14px;
}

.intro-subblock { margin-bottom: 22px; }
.intro-subblock:last-child { margin-bottom: 0; }

.intro-subheading {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 8px;
}

.intro-text {
  font-size: 14.5px;
  color: var(--ink-secondary);
  margin: 0 0 10px;
  line-height: 1.65;
}

.intro-list {
  margin: 0;
  padding-left: 20px;
  font-size: 14.5px;
  color: var(--ink-secondary);
  line-height: 1.7;
}

.intro-list li { margin-bottom: 8px; }
.intro-list li:last-child { margin-bottom: 0; }

.intro-list-labeled strong { color: var(--ink); }

.intro-list-ordered { padding-left: 22px; }

.intro-callout {
  border-left: 3px solid var(--primary);
  background: var(--bg-soft);
  padding: 18px 22px;
  border-radius: 0 var(--radius-m) var(--radius-m) 0;
}

.intro-callout .intro-heading { font-size: 16px; margin-bottom: 6px; }
.intro-callout .intro-text { margin: 0; color: var(--ink); }

.intro-link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.intro-link-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  padding: 14px 16px;
  text-decoration: none;
  background: #fff;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.intro-link-card:hover { border-color: var(--primary); box-shadow: var(--shadow-card); }

.intro-link-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary-text);
}

.intro-link-desc {
  font-size: 12.5px;
  color: var(--ink-faint);
}

/* ---------- Mode switch (Troubleshooting) ---------- */

.mode-switch {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px;
  margin-bottom: 28px;
}

.mode-switch button {
  border: none;
  background: transparent;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-secondary);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.mode-switch button.active {
  background: var(--ink);
  color: #fff;
}

/* ---------- Category grid ---------- */

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 16px;
  margin-bottom: 8px;
}

.category-card {
  display: block;
  text-align: left;
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  padding: 20px;
  background: #fff;
  cursor: pointer;
  transition: box-shadow 0.15s, border-color 0.15s, transform 0.15s;
}

.category-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.category-card-title {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 4px;
}

.category-card-meta {
  font-size: 12.5px;
  color: var(--ink-faint);
}

/* ---------- Breadcrumb / back control ---------- */

.tree-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.btn-plain {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-s);
  padding: 8px 14px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-secondary);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.btn-plain:hover { background: var(--bg-soft); border-color: var(--ink-faint); }

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary);
  border: 1px solid var(--primary);
  border-radius: var(--radius-s);
  padding: 8px 16px;
  font-size: 13.5px;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-primary:hover { background: var(--primary-dark); }

/* ---------- Q&A mode ---------- */

.qa-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  padding: 32px;
  background: #fff;
  box-shadow: var(--shadow-card);
}

.qa-step {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--primary-text);
  margin: 0 0 10px;
}

.qa-question {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 6px;
  line-height: 1.4;
}

.qa-detail {
  font-size: 14.5px;
  color: var(--ink-secondary);
  margin: 0 0 22px;
  white-space: pre-line;
}

.qa-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.qa-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  text-align: left;
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  padding: 14px 16px;
  background: var(--bg-soft);
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.qa-option:hover { border-color: var(--primary); background: var(--primary-soft); }

.qa-option-arrow { color: var(--ink-faint); flex-shrink: 0; }

.qa-single-next {
  border: none;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-m);
  padding: 14px 20px;
  font-size: 14.5px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.qa-single-next:hover { background: var(--primary-dark); }

.qa-result {
  border-radius: var(--radius-m);
  padding: 20px;
  margin-top: 4px;
}

.qa-result.resolved { background: var(--success-soft); border: 1px solid #b8ead6; }
.qa-result.escalate { background: var(--danger-soft); border: 1px solid #f3c1cd; }
.qa-result.neutral { background: var(--bg-soft); border: 1px solid var(--border); }

.qa-result-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.qa-result.resolved .qa-result-tag { background: var(--success); color: #fff; }
.qa-result.escalate .qa-result-tag { background: var(--danger); color: #fff; }
.qa-result.neutral .qa-result-tag { background: var(--ink-faint); color: #fff; }

.qa-result-text {
  font-size: 15px;
  color: var(--ink);
  white-space: pre-line;
  margin: 0 0 16px;
}

.qa-breadcrumb {
  font-size: 12.5px;
  color: var(--ink-faint);
  margin-bottom: 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
}

.qa-breadcrumb-item {
  border: none;
  background: none;
  padding: 2px 0;
  font: inherit;
  font-size: 12.5px;
  color: var(--ink-faint);
  cursor: pointer;
  text-decoration: underline;
  text-decoration-color: transparent;
  transition: color 0.15s, text-decoration-color 0.15s;
}

.qa-breadcrumb-item:hover { color: var(--primary-text); text-decoration-color: var(--primary-text); }

.qa-breadcrumb-item:not(:last-child)::after {
  content: " \203a ";
  color: var(--ink-faint);
  text-decoration: none;
}

.qa-breadcrumb-item.current {
  font-weight: 700;
  color: var(--ink);
  cursor: default;
  text-decoration: none;
}

.qa-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- Mind map mode ---------- */

.mindmap {
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  padding: 28px;
  background: var(--bg-soft);
  overflow-x: auto;
}

.mm-root {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--ink);
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius-m);
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 18px;
}

.mm-level {
  margin-left: 20px;
  padding-left: 20px;
  border-left: 2px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mm-level.mm-level-0 { margin-left: 0; padding-left: 0; border-left: none; }

.mm-node { position: relative; }

.mm-node-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.mm-node-box {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  text-align: left;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: var(--radius-m);
  padding: 11px 14px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.mm-node-box:hover { border-color: var(--primary); box-shadow: var(--shadow-card); }
.mm-node-box.is-open { border-color: var(--primary); background: var(--primary-soft); }

.mm-node-label { line-height: 1.4; }
.mm-node-detail {
  font-size: 12.5px;
  color: var(--ink-secondary);
  margin-top: 6px;
  white-space: pre-line;
}

.mm-caret {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  color: var(--ink-faint);
  transition: transform 0.15s;
}

.mm-node-box.is-open .mm-caret { transform: rotate(90deg); color: var(--primary-text); }

.mm-tag {
  display: inline-block;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 2px 8px;
  border-radius: 999px;
  margin-left: 8px;
  vertical-align: middle;
}

.mm-tag.escalate { background: var(--danger-soft); color: var(--danger); }
.mm-tag.resolved { background: var(--success-soft); color: var(--success); }

.mm-children { margin-top: 10px; }

.mm-leaf-result { margin-top: 10px; }
.mm-leaf-result .qa-result-text { font-size: 13.5px; }
.mm-leaf-result .qa-actions { flex-wrap: wrap; }

/* ---------- Error codes ---------- */

.codes-preface {
  border-left: 3px solid var(--primary);
  background: var(--bg-soft);
  padding: 16px 20px;
  border-radius: 0 var(--radius-m) var(--radius-m) 0;
  margin-bottom: 28px;
  font-size: 14px;
  color: var(--ink-secondary);
}

.codes-preface p { margin: 0 0 6px; }
.codes-preface p:last-child { margin-bottom: 0; }

.code-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.code-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  background: #fff;
  padding: 20px;
  box-shadow: var(--shadow-card);
  scroll-margin-top: 140px;
}

.code-card.highlight { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }

.code-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 4px;
}

.code-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  margin: 0;
  font-family: "SFMono-Regular", Consolas, monospace;
  word-break: break-word;
}

.code-badge {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--primary-text);
  background: var(--primary-soft);
  padding: 3px 8px;
  border-radius: 999px;
  white-space: nowrap;
  flex-shrink: 0;
}

.code-steps {
  margin: 14px 0 16px;
  padding-left: 18px;
  font-size: 13.5px;
  color: var(--ink-secondary);
}

.code-steps li { margin-bottom: 6px; }
.code-steps li:last-child { margin-bottom: 0; }

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--ink-secondary);
  border-radius: var(--radius-s);
  padding: 7px 12px;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.copy-btn:hover { background: var(--primary-soft); color: var(--primary-text); border-color: var(--primary); }
.copy-btn.copied { background: var(--success-soft); color: var(--success); border-color: #b8ead6; }

.codes-footer {
  margin-top: 28px;
  font-size: 13px;
  color: var(--ink-faint);
}

/* ---------- Self-repair videos ---------- */

.video-modules {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.video-module {
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  background: #fff;
  overflow: hidden;
}

.video-module-header {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  border: none;
  background: #fff;
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  text-align: left;
  transition: background 0.15s;
}

.video-module-header:hover { background: var(--bg-soft); }
.video-module-header.is-open { background: var(--primary-soft); border-bottom: 1px solid var(--border); }
.video-module-header.is-open .mm-caret { transform: rotate(90deg); color: var(--primary-text); }

.video-module-title { flex: 1; }

.video-module-count {
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-faint);
  background: var(--bg-soft);
  border-radius: 999px;
  padding: 2px 10px;
  flex-shrink: 0;
}

.video-module-header.is-open .video-module-count { background: #fff; color: var(--primary-text); }

.video-module-body {
  display: flex;
  flex-direction: column;
}

.video-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
}

.video-row-main { flex: 1; min-width: 0; }

.video-row-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  margin: 0 0 8px;
  line-height: 1.4;
}

.video-row-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.video-link {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  text-decoration: none;
  background: var(--primary-soft);
  color: var(--primary-text);
  border: 1px solid transparent;
  transition: background 0.15s;
}

.video-link:hover { background: var(--primary); color: #fff; }

.video-link-disabled {
  background: var(--bg-soft);
  color: var(--ink-faint);
  cursor: default;
}
.video-link-disabled:hover { background: var(--bg-soft); color: var(--ink-faint); }

.video-link-pending {
  background: var(--danger-soft);
  color: var(--danger);
}

.video-row .copy-btn { flex-shrink: 0; }

/* ---------- Case studies ---------- */

.case-study-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border: 1px solid var(--primary-dark);
  border-radius: var(--radius-m);
  background: linear-gradient(120deg, rgba(255, 246, 219, 0.7) 0%, rgba(255, 232, 160, 0.85) 55%, rgba(242, 205, 90, 0.9) 100%);
  color: var(--ink);
  padding: 22px 24px;
  margin-bottom: 16px;
  text-decoration: none;
  transition: filter 0.15s;
}

.case-study-banner:hover { filter: brightness(0.97); }
.case-study-banner .mm-caret { color: var(--ink); width: 20px; height: 20px; }

.case-study-banner-title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 3px;
}

.case-study-banner-meta {
  font-size: 12.5px;
  color: var(--primary-text);
  margin: 0;
}

.case-layout {
  display: flex;
  align-items: flex-start;
  gap: 24px;
}

.case-filter-sidebar {
  flex: 0 0 200px;
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  background: #fff;
  padding: 16px;
  position: sticky;
  top: 140px;
}

.case-filter-heading {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 12px;
}

.case-filter-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--ink);
  padding: 6px 0;
  cursor: pointer;
}

.case-filter-item input { accent-color: var(--primary-dark); width: 15px; height: 15px; cursor: pointer; }

.case-filter-clear {
  margin-top: 8px;
  width: 100%;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  border-radius: var(--radius-s);
  padding: 7px 10px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-secondary);
  cursor: pointer;
}

.case-filter-clear:hover { background: var(--primary-soft); }

.case-list { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 14px; }

.case-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  background: #fff;
  overflow: hidden;
  transition: border-color 0.15s;
}

.case-card.is-open { border-color: var(--primary-dark); }

.case-card-header {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  border: none;
  background: none;
  padding: 18px 20px;
  cursor: pointer;
  text-align: left;
}

.case-card-header:hover { background: var(--bg-soft); }

.case-card-heading { flex: 1; min-width: 0; }

.case-card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 6px;
}

.case-card-problem {
  font-size: 13.5px;
  color: var(--ink-secondary);
  margin: 0;
  line-height: 1.6;
}

.case-card-images {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.case-card-images .case-image {
  max-width: 220px;
  width: 100%;
  border-radius: var(--radius-s);
  border: 1px solid var(--border);
  cursor: zoom-in;
  transition: border-color 0.15s;
}

.case-card-images .case-image:hover { border-color: var(--primary-dark); }

.image-lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 9, 6, 0.85);
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: 32px;
  cursor: zoom-out;
}

.image-lightbox.open { display: flex; }

.image-lightbox img {
  max-width: 100%;
  max-height: 100%;
  border-radius: var(--radius-s);
  box-shadow: 0 20px 60px -10px rgba(0, 0, 0, 0.6);
}

.image-lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.image-lightbox-close:hover { background: rgba(255, 255, 255, 0.3); }

.case-card.is-open .mm-caret { transform: rotate(90deg); color: var(--primary-text); }

.case-card-body {
  padding: 0 20px 20px;
  border-top: 1px solid var(--border);
}

.case-card-section { margin-top: 16px; }

.case-card-section-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--primary-text);
  margin: 0 0 6px;
}

.case-card-text {
  font-size: 14px;
  color: var(--ink);
  line-height: 1.7;
  margin: 0;
  white-space: pre-line;
}

.case-card-media {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.case-image {
  max-width: 320px;
  width: 100%;
  border-radius: var(--radius-s);
  border: 1px solid var(--border);
}

.case-video {
  max-width: 420px;
  width: 100%;
  border-radius: var(--radius-s);
  border: 1px solid var(--border);
  background: #000;
}

/* ---------- Update news ---------- */

.update-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.update-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  background: #fff;
  padding: 24px 28px;
  box-shadow: var(--shadow-card);
}

.update-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.update-title {
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 6px;
}

.update-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--primary-text);
  background: var(--primary-soft);
  padding: 3px 10px;
  border-radius: 999px;
}

.update-versions {
  display: flex;
  gap: 24px;
  padding: 14px 16px;
  background: var(--bg-soft);
  border-radius: var(--radius-m);
  margin-bottom: 20px;
}

.update-version-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.update-version-label {
  font-size: 11.5px;
  color: var(--ink-faint);
  font-weight: 600;
}

.update-version-value {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  font-family: "SFMono-Regular", Consolas, monospace;
}

.update-section { margin-bottom: 20px; }
.update-section:last-child { margin-bottom: 0; }

.update-section-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 10px;
}

.update-rollout {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.update-rollout-row {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13.5px;
  padding: 8px 12px;
  background: var(--bg-soft);
  border-radius: var(--radius-s);
}

.update-rollout-label {
  font-weight: 600;
  color: var(--ink);
  min-width: 64px;
}

.update-rollout-date {
  color: var(--ink-faint);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 12.5px;
}

.update-rollout-scope {
  color: var(--ink-secondary);
  margin-left: auto;
}

.update-changelog {
  margin: 0;
  padding-left: 20px;
  font-size: 14px;
  color: var(--ink-secondary);
  line-height: 1.75;
}

.update-changelog li { margin-bottom: 4px; }
.update-changelog li:last-child { margin-bottom: 0; }

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 24px;
  text-align: center;
  font-size: 12.5px;
  color: var(--ink-faint);
}

/* ---------- Responsive ---------- */

@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--ink);
    padding: 8px 16px 16px;
    box-shadow: 0 12px 24px -8px rgba(0, 0, 0, 0.4);
    z-index: 45;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 8px; border-radius: 0; border-bottom: 1px solid rgba(255, 255, 255, 0.1); color: rgba(255, 255, 255, 0.8); }
  .main-nav a:hover { background: rgba(255, 255, 255, 0.08); color: #fff; }
  .main-nav a.active { color: var(--primary); background: rgba(225, 192, 74, 0.15); }
  .header-inner { position: relative; flex-wrap: nowrap; }
  .lang-globe span { display: none; }
  .lang-globe { padding: 8px; }
  .case-layout { flex-direction: column; }
  .case-filter-sidebar { flex: 1 1 auto; width: 100%; position: static; }
  .case-filter-item { display: inline-flex; margin-right: 14px; }
  .page { padding: 28px 16px 72px; }
  .hero { padding: 40px 24px; }
  .hero h1 { font-size: 27px; }
  .qa-card { padding: 22px; }
  .mm-level { margin-left: 12px; padding-left: 12px; }
}