/* mattpocock-skills-zh-tw 網站樣式 — Roadmap 探索路線（深色 × 霓虹） */

:root {
  --bg: #0d0d13;
  --bg-soft: #12121a;
  --surface: #17171f;
  --surface-2: #1f1f2a;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #eceaf4;
  --text-soft: #a3a1b6;
  --text-muted: #6e6c80;
  --cyan: #22d3ee;
  --fuchsia: #e879f9;
  --amber: #fbbf24;
  --emerald: #34d399;
  --orange: #fb923c;
  --violet: #a78bfa;
  --grad-main: linear-gradient(90deg, #22d3ee, #e879f9);
  --font-zh: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  --font-display: "Space Grotesk", "Noto Sans TC", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background:
    radial-gradient(1100px 560px at 50% -220px, rgba(34, 211, 238, 0.09), transparent 60%),
    radial-gradient(900px 520px at 88% 6%, rgba(232, 121, 249, 0.07), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-zh);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding: 2.5rem 1rem 3rem;
}

.container { max-width: 1020px; margin: 0 auto; }

a { color: var(--cyan); text-decoration: none; border-bottom: 1px dotted rgba(34, 211, 238, 0.4); }
a:hover { color: #7be7fb; border-bottom-color: var(--cyan); }

::selection { background: rgba(34, 211, 238, 0.28); }

/* ---------- Header ---------- */
header { text-align: center; margin-bottom: 2.2rem; }
h1 {
  font-family: var(--font-display);
  font-size: 2.1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.15;
  color: #f0f2ff;
  text-shadow: 0 0 30px rgba(34, 211, 238, 0.25);
}
.subtitle { font-size: 0.92rem; color: var(--text-soft); margin-top: 0.5rem; }
.badge-line { margin-top: 0.7rem; font-size: 0.76rem; color: var(--text-muted); }

/* ---------- Back link / breadcrumb ---------- */
.back-link { margin-bottom: 1.3rem; font-size: 0.85rem; }
.back-link a { border-bottom: none; margin-right: 0.9rem; color: var(--text-soft); }
.back-link a:hover { color: var(--cyan); }

/* ---------- Frontmatter table ---------- */
.fm-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.2rem 0 1.6rem;
  font-size: 0.82rem;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--cyan);
  border-radius: 8px;
  overflow: hidden;
}
.fm-table td { padding: 0.4rem 0.75rem; vertical-align: top; color: var(--text-soft); }
.fm-table td:first-child { font-weight: 600; color: var(--cyan); white-space: nowrap; width: 1%; padding-right: 1.2rem; }
.fm-table code { background: rgba(34, 211, 238, 0.12); color: #7dd3e0; padding: 0.05rem 0.3rem; border-radius: 3px; font-size: 0.78rem; }

/* ---------- Bilingual pairs ---------- */
.pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin: 0.55rem 0;
}
.col-en { padding-right: 1.8rem; border-right: 1px solid var(--line); font-size: 0.95rem; color: #cfcdda; }
.col-zh { padding-left: 1.8rem; line-height: 1.85; }
.col-en h1, .col-zh h1, .col-en h2, .col-zh h2, .col-en h3, .col-zh h3, .col-en h4, .col-zh h4 {
  margin: 0.6rem 0 0.3rem; color: #f0f2ff; line-height: 1.3; font-family: var(--font-display);
}
.col-en h1, .col-zh h1 { font-size: 1.35rem; margin: 0.4rem 0 0.3rem; }
.col-en h2, .col-zh h2 { font-size: 1.15rem; }
.col-en h3, .col-zh h3 { font-size: 1rem; }
.col-en p, .col-zh p { margin: 0.35rem 0; }
.col-en ul, .col-zh ul, .col-en ol, .col-zh ol { margin: 0.3rem 0 0.3rem 1.3rem; }
.col-en li, .col-zh li { margin: 0.15rem 0; }
.col-en blockquote, .col-zh blockquote {
  border-left: 3px solid var(--cyan);
  padding-left: 0.9rem;
  margin: 0.4rem 0;
  color: var(--text-soft);
  font-style: italic;
  opacity: 0.85;
}
.col-en pre, .col-zh pre {
  background: #0b0b11;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.8rem 1rem;
  margin: 0.5rem 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.55;
  color: #e2e8f0;
}
.col-en code, .col-zh code { font-family: var(--font-mono); }
.col-en :not(pre) > code, .col-zh :not(pre) > code {
  background: rgba(34, 211, 238, 0.12);
  color: #7dd3e0;
  padding: 0.08rem 0.32rem;
  border-radius: 4px;
  font-size: 0.86em;
}
.col-en table, .col-zh table { border-collapse: collapse; margin: 0.4rem 0; font-size: 0.85rem; width: 100%; }
.col-en th, .col-zh th { background: var(--surface-2); color: #f0f2ff; }
.col-en th, .col-en td, .col-zh th, .col-zh td { border: 1px solid var(--line-strong); padding: 0.35rem 0.6rem; text-align: left; vertical-align: top; }
.col-en hr, .col-zh hr { border: none; border-top: 1px solid var(--line-strong); margin: 0.7rem 0; }

/* ---------- Zone / map ---------- */
.zone { margin-top: 2.4rem; }
.zone-label {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 0.8rem;
}
.highway {
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 40%), var(--surface);
  padding: 1rem;
  position: relative;
}
.hwy-row {
  display: grid;
  grid-template-columns: 1fr 1.5fr 1fr;
  gap: 0.6rem;
  align-items: center;
}
.col-left { display: flex; flex-direction: column; align-items: flex-end; gap: 0.45rem; }
.col-center { display: flex; justify-content: center; align-items: center; gap: 0.6rem; flex-wrap: wrap; }
.col-right { display: flex; justify-content: flex-start; }
.ramp-cluster { display: flex; flex-direction: column; align-items: flex-end; gap: 0.45rem; }
.pair-main { display: flex; flex-wrap: wrap; gap: 0.6rem; justify-content: center; align-items: center; }

.node {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  background: var(--surface-2);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--cyan);
  border-radius: 12px;
  padding: 0.5rem 0.85rem;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.14s, box-shadow 0.14s, border-color 0.14s;
  text-align: center;
  min-width: 120px;
}
.node:hover {
  transform: translateY(-3px);
  border-color: var(--cyan);
  box-shadow: 0 6px 24px rgba(34, 211, 238, 0.18);
}
.node .label { font-family: var(--font-display); font-size: 0.85rem; font-weight: 600; color: #e6f7fb; letter-spacing: 0.01em; }
.node .tag { font-size: 0.72rem; color: var(--text-soft); margin-top: 0.2rem; line-height: 1.5; max-width: 260px; }
.node .pill {
  font-size: 0.56rem;
  color: var(--text-muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.04rem 0.5rem;
  margin-top: 0.3rem;
  letter-spacing: 0.04em;
}
.node.small { min-width: 90px; padding: 0.4rem 0.6rem; }
.node.small .tag { max-width: 200px; }

.node.on-ramp { border-left-color: var(--amber); }
.node.on-ramp:hover { border-color: var(--amber); box-shadow: 0 6px 24px rgba(251, 191, 36, 0.16); }
.node.on-ramp .label { color: #fdeab9; }

.node.service { border-left-color: var(--emerald); }
.node.service:hover { border-color: var(--emerald); box-shadow: 0 6px 24px rgba(52, 211, 153, 0.16); }
.node.service .label { color: #b8f0d8; }

.node.standalone { border-left-color: var(--violet); }
.node.standalone:hover { border-color: var(--violet); box-shadow: 0 6px 24px rgba(167, 139, 250, 0.16); }
.node.standalone .label { color: #ddd3ff; }

.node.meta { border-left-color: var(--fuchsia); }
.node.meta:hover { border-color: var(--fuchsia); box-shadow: 0 6px 24px rgba(232, 121, 249, 0.16); }
.node.meta .label { color: #f7d5fb; }

.pair-arrow { font-size: 1rem; color: var(--text-muted); }
.flow-arrow { height: 26px; position: relative; margin: 0.1rem auto; }
.flow-arrow::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--cyan), var(--fuchsia));
  opacity: 0.5;
}
.flow-arrow::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 8px;
  height: 8px;
  border-left: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: translateX(-50%) rotate(-45deg);
}

.primitive-annotation { text-align: center; margin: 0.6rem 0; font-size: 0.72rem; color: var(--text-muted); }
.primitive-annotation a { border-bottom: 1px dotted var(--line-strong); color: var(--text-muted); }
.primitive-annotation a:hover { color: var(--cyan); border-bottom-color: var(--cyan); }

.side-note { font-size: 0.66rem; color: var(--text-muted); white-space: nowrap; letter-spacing: 0.01em; }

/* ---------- Precondition / entry ---------- */
.precondition { text-align: center; margin-bottom: 0.9rem; }
.precondition a {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-soft);
  text-decoration: none;
  border: 1px dashed var(--line-strong);
  border-radius: 10px;
  padding: 0.5rem 1.2rem;
  background: var(--surface);
}
.precondition a:hover { border-color: var(--emerald); color: var(--emerald); }
.precondition .label { font-family: var(--font-display); font-size: 0.82rem; color: #cfe8f5; }
.precondition .tag { font-size: 0.68rem; color: var(--text-muted); margin-top: 0.12rem; }
.precondition-hint { font-size: 0.68rem; color: var(--text-muted); margin-top: 0.35rem; }

.entry { text-align: center; margin: 1.1rem 0 0.5rem; }
.entry .sign {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  background: linear-gradient(180deg, rgba(34, 211, 238, 0.16), rgba(232, 121, 249, 0.16)), var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  padding: 0.6rem 1.6rem;
  text-decoration: none;
  transition: transform 0.14s, box-shadow 0.14s;
}
.entry .sign:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(34, 211, 238, 0.2); }
.entry .sign .label { font-family: var(--font-display); font-size: 1rem; font-weight: 600; color: #e6f7fb; letter-spacing: 0.05em; }
.entry .sign .tag { font-size: 0.7rem; color: var(--text-soft); margin-top: 0.14rem; }
.entry .sign .en { font-size: 0.6rem; color: var(--text-muted); margin-top: 0.12rem; }

/* ---------- Foundation ---------- */
.foundation { position: relative; padding-top: 1.2rem; text-align: center; }
.foundation::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 92%;
  max-width: 780px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 15%, var(--line-strong) 85%, transparent);
}
.foundation-title { font-size: 0.7rem; color: var(--text-muted); letter-spacing: 0.08em; margin-bottom: 0.7rem; }
.foundation-row { display: flex; justify-content: center; align-items: center; gap: 0.7rem; flex-wrap: wrap; }
.foundation-node {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  background: transparent;
  border: 1px dashed var(--line-strong);
  border-radius: 8px;
  padding: 0.35rem 0.8rem;
  text-decoration: none;
  color: var(--text-soft);
}
.foundation-node:hover { background: rgba(34, 211, 238, 0.06); border-color: var(--cyan); }
.foundation-node .label { font-family: var(--font-display); font-size: 0.78rem; color: #cfe8f5; }
.foundation-node .en { font-size: 0.62rem; color: var(--text-muted); margin-top: 0.12rem; max-width: 220px; line-height: 1.45; }
.foundation-note { font-size: 0.66rem; color: var(--text-muted); margin-left: 0.3rem; }

/* ---------- Legend ---------- */
.legend { margin-top: 2.2rem; padding-top: 1rem; border-top: 1px solid var(--line); text-align: center; font-size: 0.7rem; color: var(--text-soft); line-height: 2.1; }
.legend-item { display: inline-flex; align-items: center; gap: 0.35rem; margin: 0 0.5rem; }
.legend-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }
.legend-dot.ramp { background: var(--amber); box-shadow: 0 0 8px var(--amber); }
.legend-dot.service { background: var(--emerald); box-shadow: 0 0 8px var(--emerald); }
.legend-dot.standalone { background: var(--violet); box-shadow: 0 0 8px var(--violet); }
.legend-dot.meta { background: var(--fuchsia); box-shadow: 0 0 8px var(--fuchsia); }
.legend-dash { width: 16px; height: 0; border-top: 2px dashed var(--line-strong); }
.legend .en { color: var(--text-muted); }

/* ---------- Horizontal zone (standalone / meta / misc) ---------- */
.h-zone {
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  padding: 0.9rem 1rem 0.8rem;
  background: var(--surface);
}
.h-zone .h-row { display: flex; justify-content: center; align-items: flex-start; gap: 0.8rem; flex-wrap: wrap; }
.h-zone .h-note { font-size: 0.66rem; color: var(--text-muted); text-align: center; margin-top: 0.5rem; }
.h-zone .node.standalone { border-left-color: var(--violet); }
.h-zone .node.meta { border-left-color: var(--fuchsia); }

/* ---------- Learning path (staircase) ---------- */
.level { position: relative; padding-left: 32px; margin-bottom: 2.4rem; }
.level::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--lv, var(--cyan)), transparent);
  opacity: 0.6;
}
.level::after {
  content: "";
  position: absolute;
  left: 1px;
  top: 8px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--lv, var(--cyan));
  box-shadow: 0 0 16px var(--lv, var(--cyan));
  border: 4px solid var(--bg);
}
.lv-emerald { --lv: #34d399; }
.lv-cyan { --lv: #22d3ee; }
.lv-amber { --lv: #fbbf24; }
.lv-fuchsia { --lv: #e879f9; }
.lv-orange { --lv: #fb923c; }
.lv-violet { --lv: #a78bfa; }

.level-head { display: flex; align-items: baseline; gap: 0.8rem; flex-wrap: wrap; margin-bottom: 1rem; }
.level-badge {
  color: var(--lv, var(--cyan));
  border: 1px solid var(--lv, var(--cyan));
  background: rgba(255, 255, 255, 0.03);
  border-radius: 6px;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.1rem 0.6rem;
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.level-title { font-family: var(--font-display); font-size: 1.1rem; color: #f0f2ff; font-weight: 600; }
.level-sub { font-size: 0.78rem; color: var(--text-soft); }

.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 0.9rem; }
.card {
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--lv, var(--cyan));
  border-radius: 14px;
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.14s, box-shadow 0.14s, border-color 0.14s;
}
.card:hover { transform: translateY(-3px); border-color: var(--lv, var(--cyan)); box-shadow: 0 8px 28px rgba(34, 211, 238, 0.14); }
.card .c-name { font-family: var(--font-display); font-size: 0.92rem; font-weight: 600; color: #e6f7fb; }
.card .c-zh { font-size: 0.78rem; color: var(--text-soft); margin-top: 0.35rem; line-height: 1.55; }
.card .c-tags { margin-top: 0.55rem; display: flex; gap: 0.35rem; flex-wrap: wrap; }
.card .c-tag {
  font-size: 0.6rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  color: var(--text-muted);
  border-radius: 999px;
  padding: 0.06rem 0.5rem;
}

/* ---------- Entry cards (index) ---------- */
.entry-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.3rem; max-width: 960px; margin: 0 auto; }
.entry-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  padding: 1.7rem 1.5rem 1.5rem;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
  text-align: center;
}
.entry-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--grad-main);
  opacity: 0;
  transition: opacity 0.15s;
}
.entry-card:hover { transform: translateY(-4px); border-color: var(--cyan); box-shadow: 0 14px 44px rgba(34, 211, 238, 0.14); }
.entry-card:hover::before { opacity: 1; }
.entry-card .ec-icon { font-size: 1.7rem; margin-bottom: 0.6rem; }
.entry-card .ec-title { font-family: var(--font-display); font-size: 1.2rem; font-weight: 700; color: #f0f2ff; }
.entry-card .ec-en { font-size: 0.66rem; color: var(--text-muted); margin-top: 0.25rem; letter-spacing: 0.08em; text-transform: uppercase; }
.entry-card .ec-desc { font-size: 0.82rem; color: var(--text-soft); margin-top: 0.75rem; line-height: 1.7; }

/* ---------- Footer ---------- */
footer { margin-top: 3.2rem; padding-top: 1.2rem; border-top: 1px solid var(--line); text-align: center; font-size: 0.72rem; color: var(--text-muted); line-height: 2; }
footer a { color: var(--text-soft); }

/* ---------- Install guide ---------- */
.guide h2 { color: #f0f2ff; font-family: var(--font-display); font-size: 1.15rem; margin: 1.8rem 0 0.5rem; }
.guide h3 { color: #e6f7fb; font-family: var(--font-display); font-size: 0.98rem; margin: 1.2rem 0 0.4rem; }
.guide p { margin: 0.4rem 0; color: var(--text-soft); }
.guide ul, .guide ol { margin: 0.35rem 0 0.5rem 1.3rem; color: var(--text-soft); }
.guide li { margin: 0.25rem 0; }
.guide strong { color: #f0f2ff; }
.guide pre {
  background: #0b0b11;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.75rem 0.95rem;
  margin: 0.5rem 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.6;
  color: #e2e8f0;
}
.guide :not(pre) > code {
  background: rgba(34, 211, 238, 0.12);
  color: #7dd3e0;
  padding: 0.06rem 0.32rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.85em;
}
.guide .hint { font-size: 0.74rem; color: var(--text-muted); }
.guide a { color: var(--cyan); }

/* ---------- About page structure ---------- */
.guide .timeline {
  list-style: none;
  counter-reset: tl;
  margin: 0.6rem 0 0.6rem 10px;
  padding: 0;
}
.guide .timeline li {
  counter-increment: tl;
  position: relative;
  padding: 0 0 1.1rem 1.9rem;
  border-left: 2px solid var(--line-strong);
  color: var(--text-soft);
  font-size: 0.85rem;
  line-height: 1.7;
}
.guide .timeline li:last-child { padding-bottom: 0.2rem; border-left-color: transparent; }
.guide .timeline li::before {
  content: counter(tl);
  position: absolute;
  left: -13px;
  top: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--surface-2);
  border: 1px solid var(--cyan);
  color: var(--cyan);
  font-family: var(--font-display);
  font-size: 0.72rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.guide .t-stage {
  display: block;
  font-weight: 600;
  color: #f0f2ff;
  margin-bottom: 0.15rem;
  font-size: 0.9rem;
}
.guide .work-block {
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--cyan);
  border-radius: 10px;
  padding: 0.7rem 1rem;
  margin: 0.7rem 0;
  background: var(--surface);
}
.guide .work-head { display: flex; align-items: baseline; gap: 0.7rem; flex-wrap: wrap; }
.guide .work-name { font-family: var(--font-display); font-weight: 600; color: #e6f7fb; font-size: 0.95rem; }
.guide .work-en { font-size: 0.7rem; color: var(--text-muted); }
.guide .work-block p { margin: 0.3rem 0 0; font-size: 0.84rem; color: var(--text-soft); }
.guide .link-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 0.55rem; margin: 0.6rem 0; }
.guide .link-grid a {
  display: block;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 0.55rem 0.85rem;
  background: var(--surface);
  color: var(--cyan);
  font-size: 0.8rem;
  border-bottom: 1px solid var(--line-strong);
}
.guide .link-grid a:hover { border-color: var(--cyan); color: #7be7fb; }

/* ---------- About card (homepage) — compact, matches the sync panel ---------- */
.about-card-wrap { max-width: 860px; margin: 1.6rem auto 0; }
.about-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  padding: 0.9rem 1.2rem;
  text-decoration: none;
  color: var(--text);
  border-bottom: 1px solid var(--line-strong);
  transition: border-color 0.14s, box-shadow 0.14s, transform 0.14s;
}
.about-card:hover { border-color: var(--cyan); box-shadow: 0 8px 28px rgba(34, 211, 238, 0.14); transform: translateY(-2px); }
.about-card .about-row { display: flex; align-items: center; gap: 0.7rem; flex-wrap: wrap; }
.about-card .ec-icon { font-size: 1.05rem; line-height: 1; }
.about-card .ec-title { font-family: var(--font-display); font-size: 1rem; font-weight: 600; color: #f0f2ff; }
.about-card .ec-en { font-size: 0.68rem; color: var(--text-muted); }
.about-card .ec-arrow { margin-left: auto; color: var(--cyan); font-size: 1rem; }
.about-card .ec-desc { font-size: 0.8rem; color: var(--text-soft); margin-top: 0.35rem; line-height: 1.6; }

/* ---------- GitHub embed panel ---------- */
.embed-panel { border: 1px solid var(--line-strong); border-radius: 14px; background: var(--surface); padding: 1rem 1.2rem; margin: 1.2rem 0; }
.embed-head { display: flex; align-items: center; justify-content: space-between; gap: 0.8rem; flex-wrap: wrap; margin-bottom: 0.8rem; }
.embed-title { font-family: var(--font-display); color: #e6f7fb; font-size: 0.9rem; }
.btn {
  display: inline-block;
  background: linear-gradient(180deg, rgba(34, 211, 238, 0.16), rgba(232, 121, 249, 0.16)), var(--surface-2);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 0.4rem 0.9rem;
  font-size: 0.78rem;
  color: #e6f7fb;
  border-bottom: none;
}
.btn:hover { border-color: var(--cyan); box-shadow: 0 4px 18px rgba(34, 211, 238, 0.2); color: #e6f7fb; }
.btn-sm { padding: 0.22rem 0.6rem; font-size: 0.68rem; margin-bottom: 0.6rem; border-bottom: 1px solid var(--line-strong); }
.repo-status { font-size: 0.7rem; color: var(--text-muted); margin-bottom: 0.6rem; }
.repo-note { font-size: 0.72rem; color: var(--text-muted); margin: 0 0 0.6rem; line-height: 1.6; }
.embed-scroll {
  max-height: 440px;
  overflow-y: auto;
  padding-right: 0.6rem;
  scrollbar-width: thin;
  scrollbar-color: var(--warm-mid) transparent;
}
.embed-scroll::-webkit-scrollbar { width: 8px; }
.embed-scroll::-webkit-scrollbar-track { background: transparent; }
.embed-scroll::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 4px; }
.embed-scroll::-webkit-scrollbar-thumb:hover { background: var(--warm-mid); }

/* ---------- Callout (shared-global tip) ---------- */
.callout {
  border: 1px solid rgba(52, 211, 153, 0.35);
  border-left: 3px solid var(--emerald);
  background: rgba(52, 211, 153, 0.07);
  border-radius: 10px;
  padding: 0.8rem 1rem;
  margin: 1.2rem 0;
  font-size: 0.85rem;
  color: var(--text-soft);
  line-height: 1.7;
}
.callout strong { color: #c8f5df; }

/* ---------- Upstream sync / TODO panel (homepage) ---------- */
.sync-panel {
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: var(--surface);
  padding: 1rem 1.2rem;
  margin: 1.6rem auto 0;
  max-width: 860px;
}
.sync-panel h2 {
  font-family: var(--font-display);
  font-size: 1.02rem;
  color: #f0f2ff;
  margin-bottom: 0.6rem;
}
.sync-meta { font-size: 0.82rem; color: var(--text-soft); line-height: 1.8; }
.sync-meta code { font-family: var(--font-mono); font-size: 0.78em; }
.sync-badge {
  display: inline-block;
  margin-left: 0.4rem;
  padding: 0.08rem 0.55rem;
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 600;
}
.sync-badge.ok { color: #c8f5df; border: 1px solid rgba(52, 211, 153, 0.5); background: rgba(52, 211, 153, 0.1); }
.sync-badge.warn { color: #fdeab9; border: 1px solid rgba(251, 191, 36, 0.5); background: rgba(251, 191, 36, 0.1); }
.sync-list { margin-top: 0.7rem; }
.sync-list summary { cursor: pointer; color: var(--cyan); font-size: 0.82rem; }
.sync-list ul { margin: 0.5rem 0 0.3rem 1.1rem; }
.sync-list li { font-size: 0.78rem; color: var(--text-soft); margin: 0.25rem 0; line-height: 1.5; }
.sync-list li code { font-family: var(--font-mono); font-size: 0.85em; color: #7dd3e0; background: rgba(34, 211, 238, 0.1); padding: 0.04rem 0.3rem; border-radius: 4px; }
.sync-reason { color: var(--text-muted); }
.sync-note { color: var(--amber); font-size: 0.72rem; }
.sync-empty { font-size: 0.82rem; color: var(--text-muted); margin-top: 0.6rem; }
.sync-muted { font-size: 0.76rem; color: var(--text-muted); margin-top: 0.5rem; }
.sync-hint { font-size: 0.76rem; color: var(--text-muted); margin-top: 0.7rem; border-top: 1px solid var(--line); padding-top: 0.6rem; }
.sync-hint strong { color: var(--emerald); }
.repo-readme { font-size: 0.85rem; color: var(--text-soft); line-height: 1.75; }
.repo-readme h1, .repo-readme h2, .repo-readme h3 { color: #f0f2ff; font-family: var(--font-display); margin: 0.7rem 0 0.3rem; }
.repo-readme p { margin: 0.4rem 0; }
.repo-readme ul, .repo-readme ol { margin: 0.3rem 0 0.3rem 1.2rem; }
.repo-readme li { margin: 0.15rem 0; }
.repo-readme blockquote { border-left: 3px solid var(--cyan); padding-left: 0.9rem; margin: 0.4rem 0; color: var(--text-muted); font-style: italic; }
.repo-readme code { background: rgba(34, 211, 238, 0.12); color: #7dd3e0; padding: 0.06rem 0.32rem; border-radius: 4px; font-family: var(--font-mono); font-size: 0.85em; }
.repo-readme pre { background: #0b0b11; border: 1px solid var(--line); border-radius: 8px; padding: 0.7rem 0.9rem; overflow-x: auto; }
.repo-readme pre code { background: none; color: #e2e8f0; padding: 0; }
.repo-readme a { color: var(--cyan); }
.repo-readme img { max-width: 100%; border-radius: 8px; }
.repo-readme table { border-collapse: collapse; width: 100%; margin: 0.4rem 0; }
.repo-readme th, .repo-readme td { border: 1px solid var(--line-strong); padding: 0.3rem 0.5rem; text-align: left; }
.repo-tree { margin-top: 0.9rem; border-top: 1px solid var(--line); padding-top: 0.8rem; }
.repo-tree details { margin: 0.25rem 0; }
.repo-tree summary { cursor: pointer; color: #cfe8f5; font-family: var(--font-display); font-size: 0.8rem; }
.repo-tree ul { margin: 0.2rem 0 0.4rem 1.2rem; }
.repo-tree li { font-size: 0.78rem; margin: 0.12rem 0; }
.repo-tree a { color: var(--text-soft); border-bottom: none; }
.repo-tree a:hover { color: var(--cyan); }

/* ---------- Responsive ---------- */
@media (max-width: 800px) {
  .pair { grid-template-columns: 1fr; }
  .col-en { border-right: none; border-bottom: 1px solid var(--line); padding: 0.3rem 0; margin-bottom: 0.3rem; }
  .col-zh { padding: 0.3rem 0; }
}

@media (max-width: 720px) {
  body { padding: 1.5rem 0.75rem 2rem; }
  h1 { font-size: 1.6rem; }
  .hwy-row { grid-template-columns: 1fr; gap: 0.5rem; padding: 0.5rem; }
  .col-left, .col-right { justify-content: center; align-items: center; }
  .col-center { order: -1; }
  .ramp-cluster { align-items: center; flex-direction: row; flex-wrap: wrap; justify-content: center; }
  .side-note { display: none; }
  .foundation-row { flex-direction: column; }
  .entry-cards { grid-template-columns: 1fr; }
  .level { padding-left: 24px; }
}