/* ===== Day04 · Git · HTML 版设计系统（1280×720 画布） ===== */

:root {
  --bg: #fbfaf8;
  --ink: #1c1917;
  --sub: #57534e;
  --muted: #a39c94;
  --line: #e8e3dc;
  --card: #ffffff;

  --accent: #ea580c;
  --accent-2: #c2410c;
  --accent-soft: #fff1e6;
  --accent-line: #ffd6b0;

  --green: #16a34a;
  --green-2: #15803d;
  --green-soft: #f0fdf4;
  --green-line: #bbf7d0;

  --red: #dc2626;
  --red-2: #b91c1c;
  --red-soft: #fef2f2;
  --red-line: #fecaca;

  --blue: #2563eb;
  --blue-2: #1d4ed8;
  --blue-soft: #eff6ff;
  --blue-line: #bfdbfe;

  --amber: #d97706;
  --amber-2: #b45309;
  --amber-soft: #fffbeb;
  --amber-line: #fde68a;

  --purple: #7c3aed;
  --purple-2: #6d28d9;
  --purple-soft: #f5f3ff;
  --purple-line: #ddd6fe;

  --mono: 'Cascadia Code', 'JetBrains Mono', Consolas, 'Sarasa Mono SC', monospace;
}

* { box-sizing: border-box; }
html { font-size: 21px; }
html, body { height: 100%; }
body {
  margin: 0;
  overflow: hidden;
  background: #eae5de;
  font-family: Inter, 'Noto Sans SC', 'Microsoft YaHei', 'PingFang SC', system-ui, sans-serif;
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

/* ---- 舞台与画布 ---- */
#stage { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; }
#deck {
  width: 1280px; height: 720px;
  position: relative; flex: none; overflow: hidden;
  border-radius: 6px;
  box-shadow: 0 34px 90px -34px rgba(28, 25, 23, 0.45);
  background:
    radial-gradient(1100px 500px at 88% -12%, rgba(255, 158, 90, 0.14) 0%, transparent 55%),
    radial-gradient(900px 460px at -10% 110%, rgba(245, 158, 11, 0.07) 0%, transparent 52%),
    var(--bg);
}

/* ---- 幻灯片骨架 ---- */
.slide {
  position: absolute; inset: 0;
  padding: 42px 56px 38px;
  display: none;
  flex-direction: column;
}
.slide.active { display: flex; }
@keyframes inR { from { opacity: 0; transform: translateX(56px); } to { opacity: 1; transform: none; } }
@keyframes inL { from { opacity: 0; transform: translateX(-56px); } to { opacity: 1; transform: none; } }
body.dir-fwd .slide.active { animation: inR 0.45s cubic-bezier(0.2, 0.8, 0.25, 1) both; }
body.dir-back .slide.active { animation: inL 0.45s cubic-bezier(0.2, 0.8, 0.25, 1) both; }

/* ---- 碎片动画（v-click 等价物） ---- */
[data-f] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.45s cubic-bezier(0.2, 0.8, 0.25, 1), transform 0.45s cubic-bezier(0.2, 0.8, 0.25, 1);
  pointer-events: none;
}
[data-f].shown { opacity: 1; transform: none; pointer-events: auto; }
.gnode[data-f] { transform: translate(-50%, -50%) scale(0.5); }
.gnode[data-f].shown { transform: translate(-50%, -50%); }
.glabel[data-f] { transform: translate(-50%, -30%); }
.glabel[data-f].shown { transform: translate(-50%, -50%); }
.cdot[data-f] { transform: translateX(-50%) translateY(12px); }
.cdot[data-f].shown { transform: translateX(-50%); }

/* ---- 排版 ---- */
h1, h2, h3, p { margin: 0; }
.kicker {
  font-size: 0.78rem; font-weight: 800; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 0.45rem;
}
.h-title { font-size: 2.15rem; font-weight: 800; letter-spacing: -0.02em; line-height: 1.2; }
.h-sub { color: var(--sub); font-size: 1rem; margin-top: 0.3rem; }
.muted { color: var(--muted); }
.mono { font-family: var(--mono); }

/* ---- 工具类（轻量集） ---- */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-stretch { align-items: stretch; }
.justify-center { justify-content: center; }
.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid-cols-6 { grid-template-columns: repeat(6, 1fr); }
.gap-1 { gap: 0.25rem; } .gap-2 { gap: 0.5rem; } .gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; } .gap-5 { gap: 1.25rem; } .gap-6 { gap: 1.5rem; }
.mt-1 { margin-top: 0.25rem; } .mt-2 { margin-top: 0.5rem; } .mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; } .mt-5 { margin-top: 1.25rem; } .mt-6 { margin-top: 1.5rem; } .mt-8 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.25rem; } .mb-2 { margin-bottom: 0.5rem; } .mb-3 { margin-bottom: 0.75rem; }
.text-center { text-align: center; }
.relative { position: relative; }
.w-full { width: 100%; }

/* ---- 卡片 ---- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1rem 1.15rem;
  box-shadow: 0 1px 2px rgba(28, 25, 23, 0.04), 0 14px 34px -22px rgba(28, 25, 23, 0.2);
}
.card-title { font-weight: 800; font-size: 1rem; }
.card-desc { font-size: 0.82rem; color: var(--sub); margin-top: 0.25rem; line-height: 1.5; }
.card.hl { transition: all 0.4s ease; }
.card.hl.on { border-color: var(--accent); background: var(--accent-soft); box-shadow: 0 10px 26px -16px rgba(234, 88, 12, 0.5); }

/* ---- pill ---- */
.pill {
  display: inline-flex; align-items: center; gap: 0.3rem;
  font-size: 0.76rem; font-weight: 700;
  padding: 0.16rem 0.6rem; border-radius: 999px;
  border: 1px solid var(--line); background: #fff; color: var(--sub);
  white-space: nowrap;
}
.pill.orange { background: var(--accent-soft); color: var(--accent-2); border-color: var(--accent-line); }
.pill.green { background: var(--green-soft); color: var(--green-2); border-color: var(--green-line); }
.pill.red { background: var(--red-soft); color: var(--red-2); border-color: var(--red-line); }
.pill.blue { background: var(--blue-soft); color: var(--blue-2); border-color: var(--blue-line); }
.pill.amber { background: var(--amber-soft); color: var(--amber-2); border-color: var(--amber-line); }
.pill.purple { background: var(--purple-soft); color: var(--purple-2); border-color: var(--purple-line); }

/* ---- 行内命令 ---- */
.cmd {
  font-family: var(--mono); font-size: 0.82em;
  background: #292524; color: #ffd9bd;
  padding: 0.12em 0.5em; border-radius: 7px; white-space: nowrap;
}
.cmd.plain { background: #f5f2ed; color: var(--accent-2); border: 1px solid var(--line); }

/* ---- 封面 ---- */
.cover { height: 100%; display: flex; flex-direction: column; justify-content: center; gap: 0.9rem; position: relative; z-index: 2; }
.cover h1 { font-size: 3.4rem; font-weight: 900; letter-spacing: -0.03em; line-height: 1.12; }
.cover-sub { font-size: 1.22rem; color: var(--sub); }
.cover-meta { display: flex; gap: 0.55rem; margin-top: 0.6rem; flex-wrap: wrap; }
.cover-art { position: absolute; right: 1%; bottom: 0; width: 44%; opacity: 0.55; z-index: 1; pointer-events: none; }
.hint { position: absolute; bottom: 3.2rem; left: 2.6rem; font-size: 0.78rem; color: var(--muted); z-index: 2; }

/* ---- 目标卡 ---- */
.goal { display: flex; gap: 0.85rem; align-items: flex-start; }
.goal-ico {
  width: 2.5rem; height: 2.5rem; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 1.05rem; flex-shrink: 0;
}
.goal-ico.o1 { background: var(--accent-soft); color: var(--accent-2); }
.goal-ico.o2 { background: var(--blue-soft); color: var(--blue-2); }
.goal-ico.o3 { background: var(--green-soft); color: var(--green-2); }

/* ---- 路线图 ---- */
.map { display: flex; flex-direction: column; gap: 0.45rem; }
.m-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.48rem 0.8rem; border-radius: 10px;
  border: 1px solid var(--line); background: #fff; font-size: 0.88rem;
}
.m-row.hot {
  border: 1.5px solid var(--accent); background: var(--accent-soft);
  font-weight: 800; color: var(--accent-2);
  box-shadow: 0 6px 16px -10px rgba(234, 88, 12, 0.5);
}
.m-goal {
  margin-top: 0.55rem; padding: 0.6rem 0.85rem; border-radius: 10px;
  background: #292524; color: #fde8d2; font-size: 0.78rem; line-height: 1.55;
}

/* ---- 互动投票 ---- */
.poll { display: flex; flex-direction: column; gap: 0.55rem; }
.poll-opt {
  display: flex; align-items: center; gap: 0.9rem; text-align: left;
  font: inherit; cursor: pointer;
  background: #fff; border: 1.5px solid var(--line); border-radius: 14px;
  padding: 0.62rem 0.95rem; transition: all 0.25s ease;
}
.poll-opt:hover { border-color: var(--accent-line); transform: translateY(-1px); box-shadow: 0 8px 18px -14px rgba(234, 88, 12, 0.5); }
.po-key {
  width: 2rem; height: 2rem; border-radius: 10px; flex: none;
  background: var(--accent-soft); color: var(--accent-2);
  font-weight: 900; font-size: 0.9rem;
  display: flex; align-items: center; justify-content: center;
}
.po-label { font-weight: 800; font-size: 0.95rem; }
.po-desc { display: block; font-family: var(--mono); font-size: 0.74rem; color: var(--muted); margin-top: 0.1rem; }
.po-mark { margin-left: auto; font-weight: 900; font-size: 0.95rem; opacity: 0.4; }
.poll-opt.good .po-mark { color: var(--green-2); }
.poll-opt.mid .po-mark { color: var(--amber-2); }
.poll-opt.bad .po-mark { color: var(--red-2); }
.poll-opt.picked { border-color: var(--accent); background: var(--accent-soft); box-shadow: 0 10px 24px -14px rgba(234, 88, 12, 0.55); }
.poll-opt.picked .po-mark { opacity: 1; }
.poll-note {
  display: none; font-size: 0.88rem; font-weight: 700; color: var(--accent-2);
  background: var(--accent-soft); border: 1px dashed var(--accent-line);
  border-radius: 12px; padding: 0.55rem 0.9rem;
}
.poll.voted .poll-note { display: block; animation: fadeUp 0.4s ease; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; } }

/* ---- 四代进化（版本控制思想） ---- */
.eras { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; gap: 0.55rem; align-items: stretch; }
.era {
  border: 1.5px solid var(--line); background: #fff; border-radius: 14px;
  padding: 0.75rem 0.7rem; text-align: center;
  display: flex; flex-direction: column;
}
.era.hot { border-color: var(--accent); background: var(--accent-soft); box-shadow: 0 10px 26px -16px rgba(234, 88, 12, 0.55); }
.era-ico {
  width: 2.7rem; height: 2.7rem; margin: 0 auto 0.45rem;
  border-radius: 12px; background: var(--accent-soft); color: var(--accent-2);
  display: flex; align-items: center; justify-content: center;
}
.era.hot .era-ico { background: #fff; }
.era-year { font-family: var(--mono); font-size: 0.66rem; color: var(--muted); }
.era-name { font-weight: 800; font-size: 0.95rem; margin-top: 0.1rem; }
.era-desc { font-size: 0.74rem; color: var(--sub); line-height: 1.5; margin-top: 0.3rem; }
.era-tag { margin-top: auto; padding-top: 0.4rem; }
.era-flaw {
  font-size: 0.7rem; color: var(--red-2); background: var(--red-soft);
  border: 1px solid var(--red-line); border-radius: 8px; padding: 0.22rem 0.4rem; line-height: 1.4;
}
.era-win {
  font-size: 0.7rem; color: var(--green-2); background: var(--green-soft);
  border: 1px solid var(--green-line); border-radius: 8px; padding: 0.22rem 0.4rem; line-height: 1.4;
}
.era-arrow { align-self: center; color: var(--muted); font-size: 1.1rem; flex: none; }

/* ---- Linus 人物页 ---- */
.bio-card {
  border: 1px solid var(--line); border-radius: 16px; padding: 0.9rem 1rem 1rem;
  background: linear-gradient(180deg, #fff 30%, var(--accent-soft) 100%);
  box-shadow: 0 1px 2px rgba(28, 25, 23, 0.04), 0 14px 34px -22px rgba(28, 25, 23, 0.2);
  text-align: center; display: flex; flex-direction: column;
}
.bio-card svg { width: auto; height: 12.2rem; max-width: 100%; margin: 0 auto; display: block; }
.bio-name { font-weight: 900; font-size: 1.15rem; margin-top: 0.4rem; }
.bio-role { font-size: 0.74rem; color: var(--sub); margin-top: 0.15rem; }
.bio-fact {
  margin-top: 0.55rem; font-size: 0.68rem; color: var(--sub);
  background: rgba(255, 255, 255, 0.85); border: 1px solid var(--accent-line);
  border-radius: 10px; padding: 0.4rem 0.55rem; line-height: 1.5;
}
.tl { display: flex; flex-direction: column; gap: 0.45rem; }
.tl-item {
  display: flex; gap: 0.7rem; align-items: flex-start;
  border: 1px solid var(--line); background: #fff; border-radius: 12px; padding: 0.45rem 0.75rem;
}
.tl-item.hot { border: 1.5px solid var(--accent); background: var(--accent-soft); box-shadow: 0 8px 20px -14px rgba(234, 88, 12, 0.5); }
.tl-year {
  font-family: var(--mono); font-weight: 800; font-size: 0.74rem;
  color: var(--accent-2); background: var(--accent-soft);
  border: 1px solid var(--accent-line); border-radius: 8px;
  padding: 0.1rem 0.45rem; min-width: 3.6rem; text-align: center; flex: none; height: fit-content;
}
.tl-item.hot .tl-year { background: #fff; }
.tl-body { font-size: 0.8rem; line-height: 1.45; color: var(--sub); }
.tl-body b { color: var(--ink); }
.quote-band {
  background: #292524; color: #fde8d2; border-radius: 14px;
  padding: 0.55rem 1rem; text-align: center; font-size: 1rem;
}
.quote-band b { color: #ffd9bd; font-weight: 800; }
.quote-band span { color: #a8a29e; font-size: 0.85rem; }

/* ---- 开源生态 ---- */
.eco-net {
  border: 1px solid var(--line); border-radius: 16px; background: #fff;
  box-shadow: 0 1px 2px rgba(28, 25, 23, 0.04), 0 14px 34px -22px rgba(28, 25, 23, 0.2);
  overflow: hidden; display: flex; flex-direction: column;
}
.eco-net svg { width: 100%; height: 17rem; flex: none; display: block; }
.eco-cap {
  font-size: 0.72rem; color: var(--muted); text-align: center;
  padding: 0.35rem 0.6rem 0.55rem; border-top: 1px dashed var(--line);
}

/* ---- 章节分隔页 ---- */
.section-slide { height: 100%; display: flex; align-items: center; gap: 3rem; }
.section-num {
  font-size: 8.5rem; font-weight: 900; line-height: 1; flex-shrink: 0;
  background: linear-gradient(180deg, #ffe3cf 8%, #ff9a52 60%, #ea580c 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.section-title { font-size: 2.55rem; font-weight: 900; letter-spacing: -0.02em; line-height: 1.15; }
.section-sub { color: var(--sub); margin-top: 0.7rem; font-size: 1.02rem; }
.section-chips { display: flex; gap: 0.5rem; margin-top: 1.3rem; flex-wrap: wrap; }

/* ---- 代码块 ---- */
.codeblock {
  font-family: var(--mono); font-size: 0.85rem; line-height: 1.7;
  background: #292524; color: #fde8d2;
  border-radius: 14px; padding: 0.95rem 1.1rem;
  box-shadow: 0 14px 34px -22px rgba(28, 25, 23, 0.5);
  white-space: pre; overflow: hidden;
}
.codeblock .cmt { color: #a8a29e; }
.codeblock .hl { color: #ffd9bd; font-weight: 700; }
.codeblock.light { background: #fff; color: var(--ink); border: 1px solid var(--line); box-shadow: 0 10px 30px -22px rgba(28, 25, 23, 0.35); }
.codeblock.light .cmt { color: var(--muted); }
.codeblock .ln { display: block; border-radius: 6px; padding: 0 0.35rem; margin: 0 -0.35rem; }
.codeblock .c-conf { transition: background 0.3s ease, color 0.3s ease; }
.codeblock.on .c-conf { background: rgba(254, 226, 226, 0.95); color: var(--red-2); }
.codeblock.on-2 .c-l1, .codeblock.on-2 .c-l2 { background: var(--amber-soft); color: var(--amber-2); font-weight: 700; box-shadow: inset 0 0 0 1px var(--amber-line); }

/* ---- 三区模型 ---- */
.zones {
  position: relative;
  display: grid; grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: stretch; gap: 0.8rem;
}
.zone {
  border: 1.5px solid var(--line); border-radius: 14px; background: #fff;
  padding: 0.75rem 0.9rem; min-height: 9rem;
  position: relative; transition: all 0.4s ease;
}
.zone-title { font-size: 0.84rem; font-weight: 800; color: var(--sub); }
.zone-sub { font-size: 0.68rem; color: var(--muted); font-family: var(--mono); margin-top: 0.12rem; }
.zone.on { border-color: var(--accent); background: var(--accent-soft); box-shadow: 0 10px 24px -14px rgba(234, 88, 12, 0.5); }
.zone-arrow { align-self: center; display: flex; flex-direction: column; align-items: center; gap: 0.2rem; color: var(--muted); font-size: 1.1rem; }
.zone-arrow .lbl {
  font-family: var(--mono); font-size: 0.68rem; font-weight: 700;
  padding: 0.1rem 0.45rem; border-radius: 6px;
  background: #f5f2ed; border: 1px solid var(--line); color: var(--sub);
  white-space: nowrap; transition: all 0.3s ease;
}
.zone-arrow .lbl.on { background: var(--accent); color: #fff; border-color: var(--accent); }
.mover {
  position: absolute; top: 4.4rem; left: 7%; z-index: 5;
  font-family: var(--mono); font-size: 0.8rem; font-weight: 700;
  padding: 0.32rem 0.7rem; border-radius: 10px;
  background: #292524; color: #ffd9bd;
  box-shadow: 0 6px 16px -6px rgba(28, 25, 23, 0.45);
  transition: left 0.85s cubic-bezier(0.25, 0.9, 0.3, 1.12);
  white-space: nowrap;
}
.slide[data-step="1"] .mover { left: 40%; }
.slide[data-step="2"] .mover, .slide[data-step="3"] .mover { left: 75%; }
.slide[data-step="2"] .mover::after, .slide[data-step="3"] .mover::after { content: " ✓ 已入库"; }

.step-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.8rem; }
.step-card {
  border: 1px solid var(--line); border-radius: 12px; background: #fff;
  padding: 0.6rem 0.8rem; font-size: 0.8rem; color: var(--sub);
  transition: all 0.35s ease; line-height: 1.5;
}
.step-card b { display: block; color: var(--ink); font-family: var(--mono); font-size: 0.78rem; margin-bottom: 0.2rem; }
.step-card.on { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-2); box-shadow: 0 8px 20px -14px rgba(234, 88, 12, 0.5); }
.step-card.on b { color: var(--accent-2); }

/* ---- commit 链 ---- */
.chain { position: relative; height: 6.4rem; }
.chain-line { position: absolute; left: 6%; right: 6%; top: 2.6rem; height: 2.5px; background: var(--line); border-radius: 2px; }
.cdot {
  position: absolute; top: 1.05rem; transform: translateX(-50%);
  width: 3.4rem; height: 3.4rem; border-radius: 50%;
  background: #fff; border: 2.5px solid var(--accent);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  font-family: var(--mono); font-weight: 800; font-size: 0.58rem; color: var(--accent-2);
  box-shadow: 0 4px 14px -6px rgba(234, 88, 12, 0.45); z-index: 2;
}
.cdot small { font-size: 0.55rem; color: var(--muted); font-weight: 600; }
.head-chip {
  position: absolute; font-family: var(--mono); font-size: 0.66rem; font-weight: 800;
  background: var(--green-soft); color: var(--green-2); border: 1.5px solid var(--green-line);
  padding: 0.12rem 0.55rem; border-radius: 999px; z-index: 3;
}

/* ---- git 舞台图 ---- */
.git-stage { position: relative; height: 15rem; }
.git-stage svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.gnode {
  position: absolute; transform: translate(-50%, -50%);
  width: 2.6rem; height: 2.6rem; border-radius: 50%;
  background: #fff; border: 2.5px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-weight: 800; font-size: 0.7rem; color: var(--accent-2);
  box-shadow: 0 4px 14px -6px rgba(234, 88, 12, 0.4);
  transition: all 0.55s cubic-bezier(0.2, 0.8, 0.25, 1); z-index: 2;
}
.gnode.sm { width: 1.7rem; height: 1.7rem; font-size: 0.6rem; }
.gnode.ghost { border-style: dashed; border-color: #d8d2c9; color: var(--muted); box-shadow: none; }
.gnode.dark { background: var(--ink); border-color: var(--ink); color: #fde8d2; }
.gnode.blue { border-color: #3b82f6; color: var(--blue-2); }
.glabel {
  position: absolute; transform: translate(-50%, -50%);
  font-family: var(--mono); font-size: 0.68rem; font-weight: 800;
  padding: 0.14rem 0.55rem; border-radius: 999px; border: 1.5px solid;
  transition: all 0.55s cubic-bezier(0.2, 0.8, 0.25, 1);
  white-space: nowrap; z-index: 3;
}
.glabel.main-l { background: var(--ink); color: #fde8d2; border-color: var(--ink); }
.glabel.feat-l { background: var(--blue-soft); color: var(--blue-2); border-color: var(--blue-line); }
.glabel.tag-l { background: var(--green-soft); color: var(--green-2); border-color: var(--green-line); }
.gnote {
  position: absolute; font-size: 0.72rem; font-weight: 700; color: var(--accent-2);
  background: var(--accent-soft); border: 1px solid var(--accent-line);
  border-radius: 10px; padding: 0.3rem 0.6rem; line-height: 1.4; z-index: 4;
}
.draw {
  fill: none; stroke-width: 2.5;
  stroke-dasharray: 900; stroke-dashoffset: 900;
  transition: stroke-dashoffset 1s ease;
}
.draw.on { stroke-dashoffset: 0; }
.draw.dashed { stroke-dasharray: 6 6; stroke-dashoffset: 0; opacity: 0.35; }
.mini { position: relative; }
.mini svg { position: absolute; inset: 0; width: 100%; height: 100%; }

/* ---- 流水线 ---- */
.pipeline { display: flex; align-items: stretch; gap: 0.45rem; }
.pnode {
  flex: 1; border: 1.5px solid var(--line); background: #fff;
  border-radius: 12px; padding: 0.55rem 0.5rem; text-align: center;
  transition: all 0.4s ease;
  display: flex; flex-direction: column; justify-content: center;
}
.pnode .t { font-weight: 800; font-size: 0.8rem; line-height: 1.3; }
.pnode .d { font-size: 0.64rem; color: var(--muted); margin-top: 0.15rem; line-height: 1.3; }
.pnode.on { border-color: var(--accent); background: var(--accent-soft); transform: translateY(-3px); box-shadow: 0 8px 18px -12px rgba(234, 88, 12, 0.5); }
.pnode.gate { border-color: var(--amber-line); background: var(--amber-soft); }
.pnode.gate.on { border-color: var(--amber); box-shadow: 0 8px 20px -12px rgba(217, 119, 6, 0.55); }
.pnode.win { border-color: var(--green-line); background: var(--green-soft); }
.pnode.win.on { border-color: var(--green); box-shadow: 0 8px 20px -12px rgba(22, 163, 74, 0.5); }
.pnode.win .t { color: var(--green-2); }
.parrow { color: var(--muted); font-size: 1rem; align-self: center; flex-shrink: 0; }

/* ---- SemVer ---- */
.ver { font-family: var(--mono); font-weight: 900; font-size: 3rem; letter-spacing: 0.02em; display: inline-flex; align-items: baseline; }
.ver .seg { padding: 0.04em 0.14em; border-radius: 16px; transition: all 0.35s ease; }
.ver .sep { color: #d6d0c8; padding: 0 0.02em; }
.ver .seg-a.on { background: var(--red-soft); color: var(--red-2); box-shadow: inset 0 0 0 2px var(--red-line); }
.ver .seg-b.on { background: var(--blue-soft); color: var(--blue-2); box-shadow: inset 0 0 0 2px var(--blue-line); }
.ver .seg-c.on { background: var(--green-soft); color: var(--green-2); box-shadow: inset 0 0 0 2px var(--green-line); }

/* ---- 快问快答 ---- */
.qa {
  display: flex; align-items: center; gap: 1rem;
  border: 1px solid var(--line); background: #fff; border-radius: 14px; padding: 0.7rem 1rem;
}
.qa .q { font-weight: 700; font-size: 0.95rem; }
.qa .why { font-size: 0.78rem; color: var(--muted); margin-top: 0.18rem; }
.a {
  margin-left: auto; flex-shrink: 0; font-weight: 900; font-size: 0.8rem;
  padding: 0.3rem 0.75rem; border-radius: 999px;
}
.a.no { background: var(--red-soft); color: var(--red-2); border: 1.5px solid var(--red-line); }
.a.yes { background: var(--green-soft); color: var(--green-2); border: 1.5px solid var(--green-line); }

/* ---- 坑行 ---- */
.pit {
  display: flex; gap: 0.8rem; align-items: flex-start;
  border: 1px solid var(--line); border-radius: 14px; background: #fff;
  padding: 0.65rem 0.9rem;
}
.pit-n {
  width: 1.6rem; height: 1.6rem; border-radius: 50%; flex-shrink: 0; margin-top: 0.05rem;
  background: var(--red-soft); color: var(--red-2); border: 1.5px solid var(--red-line);
  font-weight: 900; font-size: 0.78rem;
  display: flex; align-items: center; justify-content: center;
}

/* ---- 对比 ---- */
.cmp-bad { border: 1.5px solid var(--red-line); background: var(--red-soft); border-radius: 16px; padding: 0.95rem 1.05rem; }
.cmp-good { border: 1.5px solid var(--green-line); background: var(--green-soft); border-radius: 16px; padding: 0.95rem 1.05rem; }
.cmp-item {
  font-family: var(--mono); font-size: 0.84rem;
  padding: 0.32rem 0.55rem; background: rgba(255, 255, 255, 0.8);
  border-radius: 8px; margin-top: 0.4rem; border: 1px solid rgba(0, 0, 0, 0.05);
}

/* ---- 找茬游戏 ---- */
.flaw { display: flex; flex-direction: column; gap: 0.5rem; }
.flaw-item {
  display: flex; align-items: center; gap: 0.9rem;
  background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 0.48rem 0.85rem;
}
.flaw-msg { font-family: var(--mono); font-size: 0.86rem; font-weight: 700; flex: 1; min-width: 0; }
.flaw-why { font-size: 0.76rem; color: var(--muted); text-align: right; flex: 1.2; min-width: 0; }
.flaw-v {
  flex: none; width: 1.7rem; height: 1.7rem; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 0.85rem;
}
.flaw-v.ok { background: var(--green-soft); color: var(--green-2); border: 1.5px solid var(--green-line); }
.flaw-v.no { background: var(--red-soft); color: var(--red-2); border: 1.5px solid var(--red-line); }

/* ---- 任务卡 ---- */
.lab-num { display: flex; gap: 0.55rem; align-items: flex-start; font-size: 0.88rem; line-height: 1.5; }
.lab-n {
  width: 1.5rem; height: 1.5rem; border-radius: 8px; flex-shrink: 0; margin-top: 0.1rem;
  background: var(--ink); color: #fde8d2;
  font-family: var(--mono); font-weight: 800; font-size: 0.72rem;
  display: flex; align-items: center; justify-content: center;
}
.lab-cmd {
  font-family: var(--mono); background: #f5f2ed; border: 1px solid var(--line);
  border-radius: 6px; padding: 0.02em 0.4em; font-size: 0.86em;
  color: var(--accent-2); white-space: nowrap;
}
.check-item { display: block; font-size: 0.82rem; color: var(--sub); line-height: 1.6; }
.check-item .mono { white-space: nowrap; }
.check-box {
  display: inline-block; width: 1.05rem; height: 1.05rem;
  border: 1.5px solid var(--line); border-radius: 4px; background: #fff;
  vertical-align: -0.18em; margin-right: 0.45rem;
}

/* ---- 计时器 ---- */
.lab-timer {
  border: 1.5px solid var(--accent-line); background: var(--accent-soft);
  border-radius: 16px; padding: 0.6rem 0.9rem;
  display: flex; align-items: center; gap: 0.8rem;
}
.lt-time {
  font-family: var(--mono); font-weight: 900; font-size: 1.7rem;
  color: var(--accent-2); letter-spacing: 0.02em; min-width: 5.4rem; text-align: center;
}
.lab-timer.warn .lt-time { color: var(--red-2); }
.lt-btns { display: flex; gap: 0.4rem; margin-left: auto; }
.lt-btns button {
  font: inherit; font-size: 0.78rem; font-weight: 800; cursor: pointer;
  border: 1px solid var(--accent-line); background: #fff; color: var(--accent-2);
  border-radius: 999px; padding: 0.28rem 0.8rem; transition: all 0.2s ease;
}
.lt-btns button:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.lab-timer.done { border-color: var(--red-line); background: var(--red-soft); }
.lab-timer.done .lt-time { color: var(--red-2); }

/* ---- 播放器 UI ---- */
#bar {
  position: fixed; top: 0; left: 0; height: 4px; width: 0; z-index: 60;
  background: linear-gradient(90deg, #ffb066, #ea580c);
  transition: width 0.35s ease;
}
#hud { position: fixed; right: 16px; bottom: 12px; z-index: 60; display: flex; align-items: center; gap: 8px; }
#counter {
  font-family: var(--mono); font-size: 13px; font-weight: 700; color: var(--sub);
  background: rgba(255, 255, 255, 0.9); border: 1px solid var(--line);
  border-radius: 999px; padding: 6px 12px;
}
#hud button {
  width: 38px; height: 38px; border-radius: 50%; cursor: pointer;
  border: 1px solid var(--line); background: rgba(255, 255, 255, 0.9); color: var(--sub);
  font-size: 16px; line-height: 1; transition: all 0.2s ease;
}
#hud button:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
#brand { position: fixed; left: 18px; bottom: 16px; z-index: 60; font-size: 12px; color: var(--muted); font-weight: 600; }

/* ===== 分隔页插图与品牌图标 chip ===== */
.section-art { width: 21rem; flex: none; margin-left: auto; align-self: center; }
.pill-ico { width: 1.05em; height: 1.05em; vertical-align: -0.18em; margin-right: 0.35em; }