:root {
  --paper: #ece4d0;
  --paper-deep: #e4dbc4;
  --card: #f7f2e4;
  --card-alt: #f2ecdb;
  --ink: #2b2820;
  --ink-soft: #5d5749;
  --ink-faint: #8b8371;
  --accent: #779649;
  --accent-deep: #5c7838;
  --accent-wash: rgba(119, 150, 73, 0.12);
  --line: #cfc5aa;
  --line-strong: #b3a888;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: "Songti SC", "Noto Serif SC", "SimSun", "STSong", serif;
  color: var(--ink);
  background: var(--paper);
  background-image:
    radial-gradient(ellipse at 15% 8%, rgba(255, 252, 240, 0.55), transparent 55%),
    radial-gradient(ellipse at 85% 92%, rgba(197, 184, 148, 0.35), transparent 50%),
    repeating-linear-gradient(0deg, transparent 0 3px, rgba(120, 105, 70, 0.02) 3px 4px);
  min-height: 100vh;
  line-height: 1.7;
}

.paper {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 28px 64px;
}

/* ---------- 页眉 ---------- */

.masthead {
  text-align: center;
  margin-bottom: 40px;
  position: relative;
}

.seal {
  position: absolute;
  right: 0;
  top: -6px;
  width: 52px;
  height: 52px;
  background: var(--accent);
  color: #f7f4e8;
  font-family: "KaiTi", "STKaiti", "Noto Serif SC", serif;
  font-size: 18px;
  line-height: 1.15;
  display: flex;
  align-items: center;
  justify-content: center;
  writing-mode: vertical-rl;
  letter-spacing: 4px;
  border-radius: 6px;
  transform: rotate(3deg);
  box-shadow: inset 0 0 0 2px rgba(247, 244, 232, 0.55), inset 0 0 0 4px var(--accent);
  user-select: none;
}

.masthead h1 {
  font-family: "KaiTi", "STKaiti", "Noto Serif SC", serif;
  font-size: 56px;
  font-weight: 400;
  letter-spacing: 0.35em;
  margin-right: -0.35em;
  color: var(--ink);
}

.motto {
  margin-top: 10px;
  font-size: 14px;
  letter-spacing: 0.5em;
  margin-right: -0.5em;
  color: var(--ink-soft);
}

.motto::before, .motto::after {
  content: "❖";
  color: var(--accent);
  font-size: 10px;
  margin: 0 10px;
  vertical-align: 2px;
}

/* ---------- 六宫条 ---------- */

.palace-strip {
  display: flex;
  gap: 8px;
  margin-bottom: 44px;
}

.palace-chip {
  flex: 1;
  text-align: center;
  padding: 10px 4px 8px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  position: relative;
}

.palace-chip .no {
  font-size: 11px;
  color: var(--ink-faint);
  display: block;
}

.palace-chip .name {
  font-family: "KaiTi", "STKaiti", serif;
  font-size: 18px;
  letter-spacing: 2px;
  display: block;
}

.palace-chip .luck {
  font-size: 11px;
  display: block;
  margin-top: 2px;
}

.palace-chip .luck.ji { color: var(--accent-deep); }
.palace-chip .luck.xiong { color: var(--ink-soft); }

/* ---------- 起卦方式 ---------- */

.tabs {
  display: flex;
  border-bottom: 1px solid var(--line-strong);
  margin-bottom: 26px;
}

.tab {
  flex: 1;
  appearance: none;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 16px;
  letter-spacing: 0.15em;
  color: var(--ink-faint);
  padding: 12px 0 14px;
  position: relative;
  transition: color 0.25s;
}

.tab:hover { color: var(--ink-soft); }

.tab.active { color: var(--ink); }

.tab.active::after {
  content: "";
  position: absolute;
  left: 25%;
  right: 25%;
  bottom: -1px;
  height: 3px;
  background: var(--accent);
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 30px 28px;
  text-align: center;
  position: relative;
}

.panel::before {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid rgba(119, 150, 73, 0.25);
  border-radius: 1px;
  pointer-events: none;
}

.hint {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 22px;
}

.hint .em { color: var(--accent-deep); }

.btn-primary {
  appearance: none;
  cursor: pointer;
  font-family: "KaiTi", "STKaiti", "Noto Serif SC", serif;
  font-size: 19px;
  letter-spacing: 0.4em;
  text-indent: 0.4em;
  color: #f7f4e8;
  background: var(--accent);
  border: none;
  border-radius: 2px;
  padding: 13px 44px;
  transition: background 0.25s, transform 0.15s;
}

.btn-primary:hover { background: var(--accent-deep); }
.btn-primary:active { transform: translateY(1px); }

.num-row, .dice-row {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin-bottom: 26px;
}

.num-row input {
  width: 110px;
  font-family: inherit;
  font-size: 22px;
  text-align: center;
  color: var(--ink);
  background: var(--paper-deep);
  border: none;
  border-bottom: 2px solid var(--line-strong);
  padding: 10px 6px;
  outline: none;
  transition: border-color 0.25s;
}

.num-row input:focus { border-bottom-color: var(--accent); }

.num-row input::-webkit-outer-spin-button,
.num-row input::-webkit-inner-spin-button { appearance: none; }
.num-row input[type="number"] { -moz-appearance: textfield; }

.dice {
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "KaiTi", "STKaiti", serif;
  font-size: 32px;
  color: var(--ink);
  background: var(--paper-deep);
  border: 1px solid var(--line-strong);
  border-radius: 2px;
}

.error-msg {
  color: #8a4b32;
  font-size: 13px;
  margin-top: -8px;
  margin-bottom: 16px;
  min-height: 1em;
}

/* ---------- 结果 ---------- */

.result { margin-top: 56px; }

.result-head {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-bottom: 24px;
}

.ink-rule { flex: 1; height: 1px; background: var(--line-strong); }

.result-head h2 {
  font-family: "KaiTi", "STKaiti", serif;
  font-size: 24px;
  font-weight: 400;
  letter-spacing: 0.5em;
  text-indent: 0.5em;
  color: var(--ink);
}

.origin {
  text-align: center;
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 30px;
  letter-spacing: 0.06em;
}

.origin b { color: var(--ink); font-weight: 400; }

.track {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 10px;
  margin-bottom: 36px;
}

.track-node {
  flex: 1;
  max-width: 190px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 16px 12px 14px;
  text-align: center;
}

.track-node .step {
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
}

.track-node .step b { color: var(--accent-deep); font-weight: 400; }

.track-node .gong {
  font-family: "KaiTi", "STKaiti", serif;
  font-size: 26px;
  letter-spacing: 3px;
  margin: 6px 0 2px;
  color: var(--ink);
}

.track-node .role {
  font-size: 12px;
  color: var(--ink-soft);
  letter-spacing: 0.15em;
}

.track-node.final {
  background: var(--accent-wash);
  border-color: var(--accent);
}

.track-node.final .gong { color: var(--accent-deep); }

.track-arrow {
  align-self: center;
  color: var(--accent);
  font-size: 20px;
  flex: none;
}

/* ---------- 终卦 ---------- */

.final-card {
  background: var(--card);
  border: 1px solid var(--accent);
  border-radius: 2px;
  padding: 40px 32px 32px;
  text-align: center;
  position: relative;
  margin-bottom: 30px;
}

.final-card::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(119, 150, 73, 0.3);
  pointer-events: none;
}

.gong-name {
  font-family: "KaiTi", "STKaiti", "Noto Serif SC", serif;
  font-size: 58px;
  font-weight: 400;
  letter-spacing: 0.25em;
  text-indent: 0.25em;
  line-height: 1.2;
  color: var(--ink);
}

.gong-name.ji { color: var(--accent-deep); }

.badges {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin: 14px 0 20px;
  flex-wrap: wrap;
}

.badge {
  font-size: 13px;
  letter-spacing: 0.15em;
  padding: 3px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--ink-soft);
  background: var(--paper-deep);
}

.badge.hl { border-color: var(--accent); color: var(--accent-deep); }

.zong {
  font-family: "KaiTi", "STKaiti", serif;
  font-size: 17px;
  color: var(--ink);
  letter-spacing: 0.12em;
  margin-bottom: 8px;
}

.summary {
  font-size: 14.5px;
  color: var(--ink-soft);
  max-width: 520px;
  margin: 0 auto;
}

/* ---------- 分类详解 ---------- */

.cat-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 18px;
}

.cat-tab {
  appearance: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 7px 18px;
  transition: all 0.2s;
}

.cat-tab:hover { border-color: var(--accent); color: var(--ink); }

.cat-tab.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #f7f4e8;
}

.cat-body {
  background: var(--card-alt);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 24px 30px;
  font-size: 15px;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
  text-align: center;
}

.cat-body .cat-title {
  font-family: "KaiTi", "STKaiti", serif;
  font-size: 16px;
  color: var(--accent-deep);
  letter-spacing: 0.3em;
  text-indent: 0.3em;
  display: block;
  margin-bottom: 10px;
}

/* ---------- 页脚 ---------- */

.colophon {
  margin-top: 70px;
  text-align: center;
  font-size: 12.5px;
  color: var(--ink-faint);
  letter-spacing: 0.2em;
}

.hidden { display: none !important; }

@media (max-width: 640px) {
  .paper { padding: 28px 14px 44px; }
  .masthead h1 { font-size: 40px; }
  .seal { width: 42px; height: 42px; font-size: 14px; }
  .masthead { margin-bottom: 28px; }
  .motto { font-size: 12px; letter-spacing: 0.3em; margin-right: -0.3em; }

  /* 移动端不展示顶部六宫条 */
  .palace-strip { display: none; }

  .tabs { margin-bottom: 18px; }
  .tab { font-size: 14px; padding: 10px 0 12px; }
  .panel { padding: 22px 16px; }
  .hint { font-size: 13px; margin-bottom: 16px; }
  .btn-primary { font-size: 17px; padding: 11px 32px; }
  .dice { width: 58px; height: 58px; font-size: 26px; }
  .dice-row { gap: 12px; margin-bottom: 18px; }
  .num-row input { width: 72px; font-size: 18px; padding: 8px 4px; }
  .num-row { gap: 10px; margin-bottom: 16px; }

  .result { margin-top: 36px; }
  .result-head h2 { font-size: 20px; }
  .origin { font-size: 12px; margin-bottom: 18px; line-height: 1.8; }

  /* 三宫横向缩小排列 */
  .track { gap: 5px; }
  .track-node {
    padding: 10px 4px 8px;
    min-width: 0;
  }
  .track-node .step { font-size: 10px; letter-spacing: 0; }
  .track-node .gong { font-size: 19px; letter-spacing: 1px; margin: 3px 0 1px; }
  .track-node .role { font-size: 10px; letter-spacing: 0; }
  .track-arrow { font-size: 13px; }

  .final-card { padding: 26px 16px 22px; }
  .gong-name { font-size: 40px; }
  .badges { gap: 6px; margin: 10px 0 14px; }
  .badge { font-size: 11px; padding: 2px 10px; letter-spacing: 0.05em; }
  .zong { font-size: 15px; }
  .summary { font-size: 13px; }

  .cat-tab { font-size: 12.5px; padding: 6px 12px; }
  .cat-body { padding: 18px 16px; font-size: 13.5px; }

  .colophon { margin-top: 48px; font-size: 11px; }
}

@media (max-width: 380px) {
  .track-node .gong { font-size: 16px; }
  .track-node .role { font-size: 9px; }
  .track-arrow { font-size: 11px; }
}