:root {
  --ink: #2b2b2b;
  --ink-2: #5a5f68;
  --ink-3: #8a8f98;
  --brand: #16366b;
  --brand-soft: #eef2f8;
  --bg: #ffffff;
  --bg-2: #f7f9fc;
  --line: #e4e8ef;
  --line-2: #cfd6e2;
  --ok: #3b6d11;
  --warn: #a32d2d;
  --radius: 10px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

body { padding-bottom: env(safe-area-inset-bottom); }

.wrap { max-width: 720px; margin: 0 auto; padding: 0 18px 64px; }

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

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: 720px; margin: 0 auto; padding: 10px 18px;
  display: flex; align-items: center; gap: 12px;
}
.logo { font-weight: 600; color: var(--brand); font-size: 15px; letter-spacing: .5px; }
.logo small { font-weight: 400; color: var(--ink-3); font-size: 12px; margin-left: 6px; letter-spacing: 0; }
.spacer { flex: 1; }
.tbtn {
  border: 1px solid var(--line-2); background: transparent; color: var(--ink-2);
  font-size: 13px; padding: 4px 10px; border-radius: 999px; cursor: pointer; font-family: inherit;
}
.tbtn:hover { border-color: var(--brand); color: var(--brand); }

/* ---------- 书柜 ---------- */
.hero { padding: 40px 0 8px; }
.hero h1 { font-size: 26px; margin: 0 0 8px; color: var(--brand); font-weight: 600; letter-spacing: .5px; }
.hero p { margin: 0; color: var(--ink-2); font-size: 14px; }

.shelf-title {
  margin: 34px 0 12px; font-size: 13px; color: var(--ink-3);
  border-bottom: 1px solid var(--line); padding-bottom: 8px; letter-spacing: 1px;
}

.story {
  display: block; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px; margin-bottom: 12px; background: var(--bg);
  transition: border-color .15s, transform .15s;
}
.story:hover { border-color: var(--brand); }
.story h3 { margin: 0 0 4px; font-size: 18px; font-weight: 600; color: var(--ink); }
.story .author { font-size: 12px; color: var(--ink-3); margin-bottom: 8px; }
.story .summary { font-size: 14px; color: var(--ink-2); margin: 0 0 12px; }
.metaline { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--ink-3); }
.chip {
  border: 1px solid var(--line-2); border-radius: 999px; padding: 1px 8px; font-size: 11px; color: var(--ink-2);
}
.chip.live { border-color: var(--brand); color: var(--brand); }
.bar { flex: 1; height: 4px; background: var(--bg-2); border-radius: 2px; overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--brand); }

/* ---------- 阅读 ---------- */
.read-head { padding: 26px 0 4px; }
.read-head h2 { margin: 0; font-size: 20px; font-weight: 600; }
.read-head .who { font-size: 12px; color: var(--ink-3); margin-top: 4px; }

.passage { margin: 22px 0 8px; font-size: 17px; line-height: 2.0; min-height: 4.2em; }
.passage p { margin: 0 0 1.1em; }
.passage p:last-child { margin-bottom: 0; }
.passage .speaker { font-size: 13px; color: var(--brand); font-weight: 600; margin-right: 6px; }
.caret {
  display: inline-block; width: 2px; height: 1em; background: var(--brand);
  vertical-align: -2px; margin-left: 2px; animation: blink .9s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.choices { margin: 30px 0 0; display: flex; flex-direction: column; gap: 10px; }
.choice {
  text-align: left; font-family: inherit; font-size: 15px; line-height: 1.6;
  padding: 13px 16px; border: 1px solid var(--line-2); border-radius: var(--radius);
  background: var(--bg); color: var(--ink); cursor: pointer; transition: all .13s;
}
.choice:hover { border-color: var(--brand); background: var(--brand-soft); }
.choice .idx { color: var(--ink-3); margin-right: 8px; font-size: 13px; }
.choice .hintline { display: block; font-size: 12px; color: var(--ink-3); margin-top: 3px; }

.read-foot {
  margin-top: 28px; padding-top: 14px; border-top: 1px solid var(--line);
  display: flex; gap: 10px; flex-wrap: wrap; align-items: center;
}
.mini { font-size: 12px; color: var(--ink-3); }

/* ---------- 变量条 ---------- */
.stats { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; }
.stat {
  border: 1px solid var(--line); border-radius: 6px; padding: 3px 9px;
  font-size: 12px; color: var(--ink-2); background: var(--bg-2);
}
.stat b { color: var(--brand); font-weight: 600; }
.stat.up { animation: pop .5s ease; }
@keyframes pop { 0% { background: #dbe6f5; transform: scale(1.08); } 100% { background: var(--bg-2); transform: none; } }

/* ---------- 结局 ---------- */
.ending {
  margin: 26px 0; padding: 24px 22px; border: 1px solid var(--brand);
  border-radius: var(--radius); background: var(--brand-soft); text-align: center;
}
.ending .tier { font-size: 11px; color: var(--brand); letter-spacing: 2px; }
.ending h2 { margin: 8px 0 10px; font-size: 24px; color: var(--brand); font-weight: 600; }
.ending p { margin: 0; color: var(--ink-2); font-size: 14px; }
.ending.hidden { border-color: var(--brand); background: #f4efe6; }
.ending.hidden h2, .ending.hidden .tier { color: #6b4a12; }

.card-preview { margin: 18px 0; text-align: center; }
.card-preview canvas { max-width: 100%; border-radius: 8px; border: 1px solid var(--line); }

/* ---------- 图鉴 / 我的 ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; margin: 16px 0; }
.slot {
  border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; background: var(--bg);
  min-height: 84px; display: flex; flex-direction: column; justify-content: space-between;
}
.slot.locked { background: var(--bg-2); border-style: dashed; }
.slot .t { font-size: 14px; font-weight: 600; }
.slot .d { font-size: 12px; color: var(--ink-2); margin-top: 4px; }
.slot .tagline { font-size: 11px; color: var(--ink-3); margin-top: 6px; }
.slot.hidden { border-color: #d9c9a3; background: #fdfaf3; }

.codebox {
  border: 2px solid var(--brand); border-radius: var(--radius); padding: 18px;
  text-align: center; margin: 16px 0; background: var(--brand-soft);
}
.codebox .code { font-size: 24px; font-weight: 600; letter-spacing: 3px; color: var(--brand); font-family: ui-monospace, Consolas, monospace; }
.codebox .note { font-size: 12px; color: var(--ink-2); margin-top: 6px; }

input.txt, select {
  font-family: inherit; font-size: 14px; padding: 9px 12px; border: 1px solid var(--line-2);
  border-radius: 8px; width: 100%; background: var(--bg); color: var(--ink);
}
input.txt:focus, select:focus { outline: none; border-color: var(--brand); }

.btn {
  font-family: inherit; font-size: 14px; padding: 10px 18px; border-radius: 8px;
  border: 1px solid var(--brand); background: var(--brand); color: #fff; cursor: pointer;
}
.btn:hover { opacity: .88; }
.btn.ghost { background: transparent; color: var(--brand); }
.btn.block { width: 100%; }
.btn:disabled { opacity: .45; cursor: default; }

.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }

.note-card {
  border-left: 3px solid var(--brand); background: var(--bg-2);
  padding: 12px 14px; font-size: 13px; color: var(--ink-2); margin: 14px 0; border-radius: 0 6px 6px 0;
}
.note-card.warn { border-left-color: var(--warn); background: #fdf6f6; }
.note-card.ok { border-left-color: var(--ok); background: #f4f9f1; }

.empty { text-align: center; color: var(--ink-3); padding: 60px 0; font-size: 14px; }
.toolbar { margin: 16px 0; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

@media (max-width: 480px) {
  .hero h1 { font-size: 22px; }
  .passage { font-size: 16.5px; }
  .wrap { padding: 0 14px 56px; }
}