/* 老登进化机 —— 档案感：深墨底，暖白字，旧金作唯一强调色 */

:root {
  --ink: #13151a;
  --ink-2: #1b1e26;
  --ink-3: #242832;
  --line: #333846;
  --text: #ddd8cd;
  --dim: #8b8778;
  --gold: #c8912f;
  --agree: #7d9e6b;
  --differ: #b0705a;
  --serif: "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", "SimSun",
    STSong, Georgia, serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system,
    system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--ink);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

#app {
  max-width: 42rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 6rem;
}

/* ---------- 通用 ---------- */

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
  background: none;
  border: none;
}

.btn {
  display: inline-block;
  padding: 0.7rem 1.6rem;
  border: 1px solid var(--gold);
  border-radius: 2px;
  color: var(--gold);
  letter-spacing: 0.08em;
  transition: background 0.15s, color 0.15s;
}
.btn:hover {
  background: var(--gold);
  color: var(--ink);
}
.btn.ghost {
  border-color: var(--line);
  color: var(--dim);
}
.btn.ghost:hover {
  background: none;
  border-color: var(--dim);
  color: var(--text);
}
.btn[disabled] {
  opacity: 0.3;
  cursor: default;
}
.btn[disabled]:hover {
  background: none;
  border-color: var(--line);
  color: var(--dim);
}

/* 上一步：不抢主按钮的注意力，永远排在最左 */
.pager-prev {
  margin-right: auto;
}
.pager {
  justify-content: space-between;
}

.rule {
  height: 1px;
  margin: 2.5rem 0;
  background: var(--line);
  border: 0;
}

.meta {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--dim);
}

.chip {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--dim);
}
.chip.ok {
  border-color: var(--agree);
  color: var(--agree);
}
.chip.bad {
  border-color: var(--differ);
  color: var(--differ);
}

/* ---------- 封面 ---------- */

.cover {
  padding-top: 4rem;
  text-align: center;
}
.cover h1 {
  margin: 0.6rem 0 0;
  font-family: var(--serif);
  font-size: 2.6rem;
  font-weight: 400;
  letter-spacing: 0.12em;
}
.cover .sub {
  margin-top: 0.4rem;
  font-family: var(--serif);
  font-size: 1rem;
  color: var(--gold);
  letter-spacing: 0.3em;
}
.cover .lede {
  max-width: 26rem;
  margin: 2.5rem auto;
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--text);
  text-align: left;
}
.cover .lede p {
  margin: 0 0 1rem;
}
.cover .fine {
  margin-top: 3rem;
  font-size: 0.8rem;
  color: var(--dim);
}

/* ---------- 题目 ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2.5rem;
}
.count {
  font-family: var(--serif);
  font-size: 0.9rem;
  letter-spacing: 0.2em;
  color: var(--dim);
}
.bar {
  flex: 1;
  height: 1px;
  margin: 0 1rem;
  background: var(--line);
  position: relative;
}
.bar span {
  position: absolute;
  inset: 0 auto 0 0;
  background: var(--gold);
}

h2.title {
  margin: 0.5rem 0 0.2rem;
  font-family: var(--serif);
  font-size: 1.9rem;
  font-weight: 400;
  letter-spacing: 0.06em;
}

.scene {
  font-family: var(--serif);
  font-size: 1.08rem;
  color: #cfc9bd;
}
.scene p {
  margin: 0 0 1.1rem;
}
.scene ul {
  margin: 0 0 1.1rem;
  padding-left: 1.2rem;
}
.scene li {
  margin-bottom: 0.4rem;
}
.scene strong {
  color: var(--text);
}
.scene blockquote {
  margin: 1.2rem 0;
  padding-left: 1rem;
  border-left: 2px solid var(--line);
  color: var(--dim);
}

.prompt {
  margin: 2.5rem 0 1rem;
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: var(--dim);
}

/* ---------- 选项 ---------- */

.opts {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.opt {
  display: block;
  width: 100%;
  text-align: left;
  padding: 1rem 1.1rem;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 3px;
  transition: border-color 0.15s, background 0.15s;
}
.opt:hover {
  border-color: var(--gold);
  background: var(--ink-3);
}
.opt .key {
  float: left;
  margin-right: 0.7rem;
  font-family: var(--serif);
  color: var(--gold);
}
.opt .head {
  font-size: 1.05rem;
}
.opt .why {
  margin-top: 0.3rem;
  font-size: 0.9rem;
  color: var(--dim);
  line-height: 1.65;
}
.opt .why p {
  margin: 0;
}

/* 揭晓后的选项状态 */
.opt.static {
  cursor: default;
}
.opt.static:hover {
  border-color: var(--line);
  background: var(--ink-2);
}
.opt.mine {
  border-color: var(--text);
}
.opt.theirs {
  border-color: var(--gold);
  background: var(--ink-3);
}
.opt .tag {
  float: right;
  margin-left: 0.6rem;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--dim);
}

/* ---------- 揭晓 ---------- */

.verdict {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 2.5rem 0 1.5rem;
}

.reveal,
.lesson {
  font-family: var(--serif);
  font-size: 1.03rem;
}
.reveal p,
.lesson p {
  margin: 0 0 1rem;
}
.reveal strong,
.lesson strong {
  color: var(--gold);
  font-weight: 400;
}
.lesson ul {
  margin: 0;
  padding-left: 0;
  list-style: none;
}
.lesson li {
  margin-bottom: 1.4rem;
  padding-left: 1rem;
  border-left: 2px solid var(--line);
}
.lesson li strong {
  color: var(--text);
  font-weight: 700;
}

h3.sec {
  margin: 3rem 0 1rem;
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.source {
  margin-top: 2.5rem;
  font-size: 0.76rem;
  line-height: 1.7;
  color: var(--dim);
}

.nav {
  margin-top: 3rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.hint {
  font-size: 0.75rem;
  color: var(--dim);
}

/* ---------- 结果 ---------- */

.score {
  text-align: center;
  margin: 1rem 0 3rem;
}
.score .big {
  font-family: var(--serif);
  font-size: 4rem;
  line-height: 1.1;
  color: var(--gold);
}
.score .cap {
  font-size: 0.85rem;
  color: var(--dim);
}

.axis {
  margin-bottom: 1.6rem;
}
.axis .ends {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  margin-bottom: 0.35rem;
}
.axis .ends b {
  font-weight: 400;
  color: var(--dim);
}
.axis .ends b.win {
  color: var(--gold);
}
.axis .track {
  height: 3px;
  background: var(--ink-3);
  position: relative;
}
.axis .track i {
  position: absolute;
  inset: 0 auto 0 0;
  background: var(--gold);
}
.axis .note {
  margin-top: 0.3rem;
  font-size: 0.75rem;
  color: var(--dim);
}

.readout {
  margin: 2rem 0;
  padding: 1.2rem;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 3px;
  font-family: var(--serif);
  font-size: 1.05rem;
}

.missed {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.9rem;
}
.missed li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--ink-3);
  color: var(--dim);
}
.missed li b {
  color: var(--text);
  font-weight: 400;
}

/* ---------- 章节地图（封面） ---------- */

.map {
  margin: 3rem 0 2rem;
  border-top: 1px solid var(--line);
}

.ch-row {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  width: 100%;
  padding: 1rem 0.4rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
  transition: background 0.15s;
}
.ch-row:hover {
  background: var(--ink-2);
}
.ch-n {
  flex: none;
  width: 1.4rem;
  font-family: var(--serif);
  font-size: 1.1rem;
  color: var(--dim);
}
.ch-row.done .ch-n {
  color: var(--gold);
}
.ch-body {
  flex: 1;
  min-width: 0;
}
.ch-title {
  display: block;
  font-size: 1.02rem;
}
.ch-pr {
  display: block;
  margin-top: 0.2rem;
  font-family: var(--serif);
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--dim);
}
.ch-state {
  flex: none;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--dim);
}
.ch-row.done .ch-state {
  color: var(--gold);
}

/* ---------- 章首 / 章末 ---------- */

.ch-open {
  padding-top: 1.5rem;
}

/* 一句话判断——整个站要人记住的就是这一块 */
.principle {
  margin: 1.5rem 0 2rem;
  padding: 1.1rem 1.3rem;
  background: var(--ink-2);
  border-left: 3px solid var(--gold);
  font-family: var(--serif);
  font-size: 1.2rem;
  line-height: 1.7;
  color: #ece6d9;
}

.recap {
  margin: 0;
  padding: 0;
  list-style: none;
}
.recap li {
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--ink-3);
}
.recap li b {
  font-weight: 400;
  font-size: 1rem;
}
.recap li .pr {
  display: block;
  margin-top: 0.25rem;
  font-family: var(--serif);
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--dim);
}
.recap li.skip {
  color: var(--dim);
}
.recap .chip {
  padding: 0 0.4rem;
  margin-right: 0.3rem;
}

/* ---------- 判断卡 ---------- */

/* 封面上那条「判断卡 3 / 8」+ 八个点 */
.deck-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  width: 100%;
  margin-top: 2.5rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  border-radius: 3px;
  transition: border-color 0.15s;
}
.deck-strip:hover {
  border-color: var(--gold);
}
.deck-strip-n {
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  color: var(--dim);
}
.deck-strip-dots {
  display: flex;
  gap: 0.4rem;
}
.deck-strip-dots i {
  width: 6px;
  height: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
}
.deck-strip-dots i.on {
  background: var(--gold);
  border-color: var(--gold);
}

.deck {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr));
  gap: 0.9rem;
  margin: 1.5rem 0 2rem;
}

.card {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  text-align: left;
  padding: 1.1rem 1.1rem 1.3rem;
  background: linear-gradient(180deg, var(--ink-2), var(--ink));
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--gold);
  transition: border-color 0.15s, transform 0.15s;
}
button.card:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
}

.card-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
}
.card-no {
  font-family: var(--serif);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  color: var(--gold);
}
.card-score {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--dim);
}

.card-sigil {
  display: flex;
  justify-content: center;
  margin: 1.1rem 0 0.9rem;
}
.sigil {
  width: 4.2rem;
  height: 4.2rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.1;
}

.card-title {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--text);
}
.card-pr {
  margin: 0.5rem 0 0;
  font-family: var(--serif);
  font-size: 0.92rem;
  line-height: 1.7;
  color: #cfc9bd;
}
.card-cases {
  margin: 0.9rem 0 0;
  padding: 0.7rem 0 0;
  border-top: 1px solid var(--ink-3);
  list-style: none;
  font-size: 0.76rem;
  line-height: 1.9;
  color: var(--dim);
}

/* 锁定态：只留编号和一枚灰印记 */
.card.locked {
  color: var(--line);
  background: none;
  border-style: dashed;
}
.card.locked .card-no {
  color: var(--dim);
}
.card-lock {
  margin-top: 0.2rem;
  text-align: center;
  font-family: var(--serif);
  font-size: 1rem;
  letter-spacing: 0.2em;
  color: var(--dim);
}
.card-hint {
  margin-top: 0.5rem;
  text-align: center;
  font-size: 0.72rem;
  color: var(--dim);
}

/* 单卡视图：为截图设计 */
.card-stage {
  display: flex;
  justify-content: center;
  margin: 2rem 0;
}
.card.big {
  width: 100%;
  max-width: 21rem;
  padding: 1.6rem 1.6rem 1.2rem;
}
.card.big .sigil {
  width: 6.5rem;
  height: 6.5rem;
}
.card.big .card-title {
  font-size: 1.5rem;
}
.card.big .card-pr {
  font-size: 1.05rem;
}
.card-foot {
  margin-top: 1.4rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--ink-3);
  text-align: center;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--dim);
}

/* 章末的解锁那一下 */
.unlock {
  margin: 1.8rem 0 1rem;
  text-align: center;
}
.unlock-label {
  margin-bottom: 1rem;
  font-size: 0.76rem;
  letter-spacing: 0.3em;
  color: var(--gold);
}
.unlock .card {
  max-width: 19rem;
  margin: 0 auto 1.5rem;
}

/* ---------- 深挖折叠 ---------- */

.dig {
  margin-top: 2rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.dig > summary {
  padding: 0.9rem 0;
  cursor: pointer;
  list-style: none;
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  color: var(--dim);
}
.dig > summary::-webkit-details-marker {
  display: none;
}
.dig > summary::before {
  content: "＋ ";
  color: var(--gold);
}
.dig[open] > summary::before {
  content: "－ ";
}
.dig > summary:hover {
  color: var(--text);
}
.dig[open] > summary {
  border-bottom: 1px solid var(--ink-3);
}
.dig .lesson {
  padding-top: 1.5rem;
}
.dig .source {
  margin-bottom: 1.5rem;
}

@media (max-width: 480px) {
  #app {
    padding: 1.5rem 1rem 5rem;
  }
  .cover {
    padding-top: 2rem;
  }
  .cover h1 {
    font-size: 2rem;
  }
  h2.title {
    font-size: 1.5rem;
  }
  .principle {
    font-size: 1.08rem;
    padding: 0.9rem 1rem;
  }
}