/* ==========================================================
   敦煌星图 · H5 长卷版
   设计语言：宣纸 / 玄墨 / 朱砂 / 石青 / 石绿 / 泥金
   移动端优先，PC 自适应（卷轴居中）
   ========================================================== */

:root {
  /* 默认矿彩：朱砂泥金（莫高第130窟） */
  --c-cinnabar: #a9432f;
  --c-cinnabar-soft: #c96b52;
  --c-gold: #c19a4b;
  --c-gold-bright: #e0bd6d;
  --c-azure: #3a6b9b;
  --c-green: #4b7f66;
  --c-ink: #2f2823;
  --c-ink-2: #5a4d42;

  /* 纸面 */
  --paper: #f4ebdc;
  --paper-2: #ece0cc;
  --paper-3: #e2d3ba;
  --line: rgba(63, 45, 32, 0.18);
  --line-strong: rgba(63, 45, 32, 0.32);
  --card: #fbf6ec;
  --text: #33291f;
  --text-2: #6b5b4a;
  --text-3: #94806a;
  --shadow: 0 6px 24px rgba(90, 60, 30, 0.12);
  --shadow-sm: 0 2px 8px rgba(90, 60, 30, 0.1);

  --font-serif: "Songti SC", "STSong", "Source Han Serif SC", "Noto Serif CJK SC",
    "SimSun", "PingFang SC", serif;
  --font-kai: "Kaiti SC", "STKaiti", "KaiTi", "Songti SC", serif;

  --radius: 10px;
  --tab-h: 58px;
}

body.night {
  --paper: #17130f;
  --paper-2: #1e1915;
  --paper-3: #262019;
  --line: rgba(224, 200, 160, 0.16);
  --line-strong: rgba(224, 200, 160, 0.3);
  --card: #201a15;
  --text: #e8dcc4;
  --text-2: #bfae92;
  --text-3: #8c7c66;
  --shadow: 0 6px 24px rgba(0, 0, 0, 0.45);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
}

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

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

body {
  background: var(--paper);
  background-image: radial-gradient(var(--line) 0.6px, transparent 0.6px);
  background-size: 22px 22px;
  color: var(--text);
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.4s, color 0.4s;
}

img {
  max-width: 100%;
}

button {
  font-family: inherit;
  color: inherit;
  cursor: pointer;
}

input,
select {
  font-family: inherit;
  font-size: 16px; /* 防 iOS 缩放 */
}

/* ============ 布局容器 ============ */
.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 14px calc(var(--tab-h) + 26px);
  position: relative;
}

/* PC 上营造长卷留白 */
@media (min-width: 900px) {
  .wrap {
    padding: 0 24px calc(var(--tab-h) + 40px);
  }
  body::before,
  body::after {
    content: "";
    position: fixed;
    top: 0;
    bottom: 0;
    width: 40px;
    pointer-events: none;
    z-index: 0;
  }
  body::before {
    left: 0;
    background: linear-gradient(to right, rgba(120, 80, 40, 0.08), transparent);
  }
  body::after {
    right: 0;
    background: linear-gradient(to left, rgba(120, 80, 40, 0.08), transparent);
  }
}

/* ============ 卷首 ============ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: linear-gradient(180deg, var(--paper) 82%, rgba(0, 0, 0, 0));
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.topbar-inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 10px 14px 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand {
  flex: 1;
  min-width: 0;
}

.brand h1 {
  margin: 0;
  font-size: 19px;
  letter-spacing: 0.24em;
  font-weight: 700;
  color: var(--c-cinnabar);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand .sub {
  font-size: 10px;
  letter-spacing: 0.28em;
  color: var(--text-3);
  text-transform: uppercase;
}

.icon-btn {
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  border: 1px solid var(--line-strong);
  background: var(--card);
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: var(--text-2);
  transition: all 0.25s;
}

.icon-btn:active {
  transform: scale(0.94);
}

/* 卷轴分割线 */
.scroll-rule {
  height: 14px;
  background: repeating-linear-gradient(
      90deg,
      var(--c-gold) 0 12px,
      transparent 12px 20px
    )
    center/100% 1px no-repeat;
  opacity: 0.5;
  margin: 6px 0 14px;
}

/* ============ 通用卡片 ============ */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 16px;
  margin-bottom: 14px;
  position: relative;
}

.card-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--c-cinnabar);
  font-weight: 700;
  margin: 0 0 10px;
}

.card-title::before {
  content: "";
  width: 4px;
  height: 15px;
  background: var(--c-cinnabar);
  border-radius: 2px;
}

.card-title .en {
  font-size: 9px;
  letter-spacing: 0.16em;
  color: var(--text-3);
  font-weight: 400;
  margin-left: auto;
}

/* ============ 表单 ============ */
.field {
  margin-bottom: 12px;
}

.field label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--text-3);
  margin-bottom: 4px;
}

.field input,
.field select {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--paper);
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
}

.field input:focus,
.field select:focus {
  border-color: var(--c-cinnabar);
}

.row2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 11px 16px;
  border-radius: 9px;
  border: 1px solid var(--c-cinnabar);
  background: var(--c-cinnabar);
  color: #fff8ec;
  font-size: 14px;
  letter-spacing: 0.16em;
  font-weight: 700;
  transition: all 0.25s;
  box-shadow: var(--shadow-sm);
}

.btn:active {
  transform: scale(0.98);
}

.btn.ghost {
  background: transparent;
  color: var(--c-cinnabar);
}

.btn.gold {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: #2b2013;
}

.btn.block {
  width: 100%;
}

.btn.sm {
  padding: 7px 11px;
  font-size: 12px;
  letter-spacing: 0.1em;
}

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

/* 名人预设 */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  padding: 5px 11px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--paper);
  font-size: 12px;
  color: var(--text-2);
  transition: all 0.2s;
}

.chip:active,
.chip.on {
  background: var(--c-cinnabar);
  border-color: var(--c-cinnabar);
  color: #fff8ec;
}

/* ============ 长卷结果 ============ */
.scroll-paper {
  position: relative;
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  background: var(--paper-2);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.scroll-paper::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid var(--c-gold);
  opacity: 0.35;
  border-radius: 6px;
  pointer-events: none;
}

.scroll-head {
  padding: 16px 16px 8px;
  text-align: center;
}

.scroll-head .mansion-big {
  font-size: 40px;
  font-weight: 700;
  color: var(--c-cinnabar);
  letter-spacing: 0.1em;
  line-height: 1.1;
}

.scroll-head .mansion-full {
  font-size: 14px;
  letter-spacing: 0.3em;
  color: var(--text-2);
}

.scroll-head .symbol-tag {
  display: inline-block;
  margin-top: 6px;
  padding: 2px 10px;
  border: 1px solid var(--c-cinnabar);
  color: var(--c-cinnabar);
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: 0.2em;
}

.chart-box {
  display: flex;
  justify-content: center;
  padding: 4px 8px;
}

.chart-box svg {
  width: 100%;
  height: auto;
  max-width: 420px;
  display: block;
}

/* 干支条 */
.ganzhi-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  padding: 10px 14px;
}

.ganzhi-cell {
  text-align: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 2px;
}

.ganzhi-cell .k {
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--text-3);
}

.ganzhi-cell .v {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

/* 诗句 */
.poem {
  margin: 4px 14px 14px;
  padding: 14px 16px;
  border-left: 3px solid var(--c-cinnabar);
  background: var(--card);
  border-radius: 0 8px 8px 0;
  font-family: var(--font-kai);
  font-size: 17px;
  line-height: 2;
  letter-spacing: 0.08em;
  white-space: pre-line;
  color: var(--text);
}

.poem-title {
  text-align: center;
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--c-cinnabar);
  font-weight: 700;
}

/* 印章 */
.seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border: 2px solid var(--c-cinnabar);
  color: var(--c-cinnabar);
  border-radius: 6px;
  font-size: 20px;
  font-weight: 700;
  font-family: var(--font-kai);
  background: rgba(169, 67, 47, 0.12);
  background: color-mix(in srgb, var(--c-cinnabar) 12%, transparent);
  transform: rotate(-4deg);
}

/* 谶语 */
.omen {
  padding: 0 16px 16px;
  font-size: 13.5px;
  line-height: 1.95;
  color: var(--text-2);
  white-space: pre-line;
  text-align: justify;
}

/* 折叠面板 */
details.fold {
  border-top: 1px solid var(--line);
  padding: 10px 16px;
}

details.fold summary {
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--c-cinnabar);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

details.fold summary::-webkit-details-marker {
  display: none;
}

details.fold summary::after {
  content: "▾";
  transition: transform 0.25s;
  color: var(--text-3);
}

details.fold[open] summary::after {
  transform: rotate(180deg);
}

details.fold .body {
  padding-top: 10px;
  font-size: 13px;
  line-height: 1.9;
  color: var(--text-2);
  text-align: justify;
}

.kv {
  display: flex;
  gap: 8px;
  font-size: 13px;
  padding: 3px 0;
}

.kv .k {
  flex: 0 0 62px;
  color: var(--text-3);
  font-size: 12px;
}

/* 古籍引文 */
.quote {
  border-left: 2px dashed var(--c-gold);
  padding: 2px 0 2px 10px;
  margin: 8px 0;
  font-size: 12.5px;
  color: var(--text-2);
  font-family: var(--font-kai);
}

/* ============ 二十八宿图鉴 ============ */
.xiang-group {
  margin-bottom: 12px;
}

.xiang-head {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.24em;
  color: var(--text);
  margin: 14px 2px 8px;
  font-weight: 700;
}

.xiang-head .bar {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--c-gold), transparent);
}

.xiang-head .en {
  font-size: 9px;
  color: var(--text-3);
  letter-spacing: 0.12em;
}

.mansion-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

@media (min-width: 700px) {
  .mansion-grid {
    grid-template-columns: repeat(7, 1fr);
  }
}

.mansion-cell {
  aspect-ratio: 1;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: var(--card);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
  transition: all 0.22s;
  position: relative;
  overflow: hidden;
}

.mansion-cell:active {
  transform: scale(0.95);
}

.mansion-cell .zi {
  font-size: 22px;
  font-weight: 700;
  color: var(--c-cinnabar);
  line-height: 1.1;
}

.mansion-cell .an {
  font-size: 10px;
  color: var(--text-3);
}

.mansion-cell .el {
  position: absolute;
  top: 3px;
  right: 4px;
  font-size: 9px;
  color: var(--text-3);
}

.mansion-cell.is-natal {
  border-color: var(--c-cinnabar);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--c-cinnabar) 25%, transparent);
}

.mansion-cell.is-natal::after {
  content: "本命";
  position: absolute;
  bottom: 2px;
  font-size: 8px;
  color: var(--c-cinnabar);
  letter-spacing: 0.1em;
}

/* ============ 抽屉 / 弹层 ============ */
.mask {
  position: fixed;
  inset: 0;
  background: rgba(20, 12, 6, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s;
  z-index: 60;
}

.mask.on {
  opacity: 1;
  pointer-events: auto;
}

.sheet {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  max-height: 84vh;
  background: var(--paper);
  border-radius: 16px 16px 0 0;
  z-index: 61;
  transform: translateY(102%);
  transition: transform 0.32s cubic-bezier(0.22, 0.9, 0.3, 1);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  box-shadow: 0 -8px 40px rgba(40, 20, 0, 0.25);
}

.sheet.on {
  transform: translateY(0);
}

.sheet-grip {
  position: sticky;
  top: 0;
  background: var(--paper);
  padding: 10px 0 6px;
  display: flex;
  justify-content: center;
  z-index: 2;
}

.sheet-grip i {
  width: 42px;
  height: 4px;
  border-radius: 3px;
  background: var(--line-strong);
  display: block;
}

.sheet-body {
  padding: 4px 18px 26px;
}

.sheet h3 {
  margin: 4px 0 2px;
  font-size: 22px;
  color: var(--c-cinnabar);
  letter-spacing: 0.14em;
}

.sheet .meta {
  font-size: 11.5px;
  color: var(--text-3);
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.close-x {
  position: absolute;
  right: 14px;
  top: 10px;
  z-index: 3;
  border: none;
  background: transparent;
  font-size: 20px;
  color: var(--text-3);
}

/* ============ 知识 / 年表 ============ */
.timeline {
  border-left: 2px solid var(--c-gold);
  margin-left: 6px;
  padding-left: 14px;
}

.tl-item {
  position: relative;
  padding: 6px 0 12px;
}

.tl-item::before {
  content: "";
  position: absolute;
  left: -21px;
  top: 13px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--c-cinnabar);
  border: 2px solid var(--paper);
}

.tl-item .yr {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-cinnabar);
  font-weight: 700;
}

.tl-item .tx {
  font-size: 13px;
  color: var(--text-2);
}

.fact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

@media (min-width: 620px) {
  .fact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.fact {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 12px 14px;
}

.fact .t {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--c-cinnabar);
  margin-bottom: 4px;
  letter-spacing: 0.1em;
}

.fact .d {
  font-size: 12.5px;
  color: var(--text-2);
  line-height: 1.8;
}

/* ============ 问答 ============ */
.quiz-q {
  font-size: 16px;
  line-height: 1.8;
  margin: 2px 0 14px;
  font-weight: 700;
}

.opt {
  display: block;
  width: 100%;
  text-align: left;
  padding: 11px 13px;
  margin-bottom: 8px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: var(--card);
  font-size: 14px;
  transition: all 0.2s;
}

.opt.right {
  border-color: var(--c-green);
  background: rgba(75, 127, 102, 0.16);
  background: color-mix(in srgb, var(--c-green) 14%, var(--card));
}

.opt.wrong {
  border-color: var(--c-cinnabar);
  background: rgba(169, 67, 47, 0.16);
  background: color-mix(in srgb, var(--c-cinnabar) 14%, var(--card));
}

.opt:disabled {
  cursor: default;
}

.quiz-progress {
  height: 5px;
  border-radius: 3px;
  background: var(--paper-3);
  overflow: hidden;
  margin-bottom: 12px;
}

.quiz-progress i {
  display: block;
  height: 100%;
  background: var(--c-cinnabar);
  transition: width 0.35s;
}

.result-score {
  text-align: center;
  padding: 12px 0 4px;
}

.result-score .num {
  font-size: 46px;
  font-weight: 700;
  color: var(--c-cinnabar);
  line-height: 1.1;
}

.result-score .rank {
  font-size: 15px;
  letter-spacing: 0.3em;
  color: var(--c-gold);
  font-weight: 700;
}

/* ============ 天象 ============ */
.sky-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 9px;
}

@media (min-width: 620px) {
  .sky-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.sky-cell {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 11px 10px;
  text-align: center;
}

.sky-cell .k {
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--text-3);
}

.sky-cell .v {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-top: 2px;
}

.sky-cell .u {
  font-size: 10px;
  color: var(--text-3);
}

.moonbox {
  display: flex;
  align-items: center;
  gap: 14px;
}

.moon {
  width: 74px;
  height: 74px;
  flex: 0 0 74px;
}

/* ============ 底部导航 ============ */
.tabbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  display: flex;
  background: var(--paper);
  border-top: 1px solid var(--line-strong);
  padding-bottom: env(safe-area-inset-bottom);
  box-shadow: 0 -2px 14px rgba(90, 60, 30, 0.1);
}

.tabbar-inner {
  max-width: 760px;
  margin: 0 auto;
  width: 100%;
  display: flex;
}

.tab {
  flex: 1;
  border: none;
  background: transparent;
  padding: 7px 0 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  color: var(--text-3);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  height: var(--tab-h);
  justify-content: center;
}

.tab .ic {
  font-size: 18px;
  line-height: 1;
  filter: grayscale(1);
  opacity: 0.6;
  transition: all 0.2s;
}

.tab.on {
  color: var(--c-cinnabar);
  font-weight: 700;
}

.tab.on .ic {
  filter: none;
  opacity: 1;
  transform: translateY(-1px);
}

/* ============ 页面切换 ============ */
.page {
  display: none;
  animation: fadeUp 0.35s ease both;
}

.page.on {
  display: block;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ============ 矿彩配色条 ============ */
.palettes {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.pal {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px 5px 6px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--card);
  font-size: 11.5px;
  color: var(--text-2);
}

.pal.on {
  border-color: var(--c-cinnabar);
  color: var(--c-cinnabar);
  font-weight: 700;
}

.pal .dot {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.15);
}

/* ============ 提示 ============ */
.toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--tab-h) + 24px);
  transform: translateX(-50%) translateY(12px);
  background: rgba(40, 28, 18, 0.92);
  color: #f6ecd8;
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 13px;
  z-index: 80;
  opacity: 0;
  pointer-events: none;
  transition: all 0.28s;
  max-width: 84vw;
  text-align: center;
}

.toast.on {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.foot {
  text-align: center;
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.14em;
  padding: 8px 0 4px;
}

.hint {
  font-size: 11.5px;
  color: var(--text-3);
  line-height: 1.7;
}

.empty {
  text-align: center;
  color: var(--text-3);
  font-size: 13px;
  padding: 30px 10px;
}