/* 问春风 · 掷筊问事 —— 共用样式 */

:root {
  --bg: #f7f0e4;
  --bg-warm: #f5e8ce;
  --ink: #2b1a12;
  --ink-60: rgba(43, 26, 18, .62);
  --ink-42: rgba(43, 26, 18, .42);
  --ink-28: rgba(43, 26, 18, .28);
  --line: rgba(43, 26, 18, .13);
  --line-soft: rgba(43, 26, 18, .08);
  --cinnabar: #c22e21;
  --cinnabar-hi: #d23b2c;
  --cinnabar-deep: #8f2118;
  --gold: #c19a4b;
  --gold-soft: #e3c78d;
  --paper: #fbf5e9;

  --ease: cubic-bezier(.22, 1, .36, 1);
  --font-serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC",
    "Source Han Serif CN", "SimSun", "Songti TC", serif;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC",
    "Microsoft YaHei", system-ui, -apple-system, sans-serif;

  --z-stage: 1;
  --z-ui: 30;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-sans);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }

button {
  font: inherit;
  color: inherit;
  border: 0;
  background: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }

/* ============ 首页 ============ */

.home-shell {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  background:
    linear-gradient(90deg,
      rgba(150, 60, 45, .13) 0%, rgba(150, 60, 45, 0) 22%,
      rgba(150, 60, 45, 0) 78%, rgba(193, 154, 75, .16) 100%),
    radial-gradient(115% 78% at 50% -14%, rgba(219, 141, 118, .40) 0%, rgba(219, 141, 118, 0) 58%),
    radial-gradient(85% 55% at 50% 4%, rgba(232, 189, 166, .55) 0%, rgba(232, 189, 166, 0) 72%),
    linear-gradient(180deg, #ecd9cd 0%, #f4eade 30%, #f7f1e4 56%, #f4e9d5 100%);
}

.brand-bar {
  position: fixed;
  z-index: var(--z-ui);
  top: max(24px, env(safe-area-inset-top));
  left: max(28px, env(safe-area-inset-left));
}

.brand-name {
  display: inline-grid;
  grid-template-columns: max-content max-content;
  align-items: end;
  column-gap: clamp(18px, 2vw, 28px);
  margin: 0;
  font-family: var(--font-serif);
  color: var(--ink);
}

.brand-primary {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-size: clamp(1.9rem, 3.2vw, 3.05rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: .02em;
}

.brand-ritual {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--ink-60);
  transform: translateY(1.6rem);
}

.brand-sep { display: none; }

.tagline-banner {
  position: fixed;
  /* 压在 3D 舞台之下：筊杯飞出时从字前经过，形成前中后景层次 */
  z-index: 0;
  top: clamp(86px, 12vh, 140px);
  left: 50%;
  transform: translateX(-50%);
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.9rem, 3.2vw, 3.05rem);
  font-weight: 800;
  letter-spacing: .14em;
  text-indent: .07em;
  line-height: 1.1;
  color: var(--ink);
  opacity: .5;
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
}

.utility-rail {
  position: fixed;
  z-index: var(--z-ui);
  top: max(24px, env(safe-area-inset-top));
  right: max(28px, env(safe-area-inset-right));
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .02em;
}

.rail-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  color: var(--ink-60);
  transition: color .16s var(--ease), transform .16s var(--ease);
}

.rail-link:hover { color: var(--cinnabar-deep); transform: translateY(-1px); }

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-height: 44px;
  font-size: .78rem;
  line-height: 1;
}

.lang-switch::before {
  content: "";
  width: 1px;
  height: 16px;
  margin: 0 8px 0 2px;
  background: var(--ink-28);
}

.lang-choice {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  min-height: 44px;
  padding: 0 3px;
  color: var(--ink-42);
  transition: color .16s var(--ease), transform .16s var(--ease);
}

.lang-choice:hover { color: var(--cinnabar-deep); transform: translateY(-1px); }
.lang-choice.is-current { color: var(--ink); }
.lang-sep { color: var(--ink-28); font-weight: 500; }

.sound-toggle {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  color: var(--ink-60);
  background: rgba(251, 245, 233, .7);
  border: 1px solid var(--line);
  border-radius: 999px;
  pointer-events: auto;
  transition: transform .18s var(--ease), color .18s var(--ease),
    border-color .18s var(--ease), background-color .18s var(--ease);
}

.sound-toggle:hover { color: var(--cinnabar-deep); border-color: var(--gold); transform: translateY(-1px); }
.sound-toggle.is-muted { color: var(--ink-42); }
.sound-toggle svg { width: 21px; height: 21px; }
.sound-toggle .ico-mute { display: none; }
.sound-toggle.is-muted .ico-sound { display: none; }
.sound-toggle.is-muted .ico-mute { display: block; }

.stage-layer { position: absolute; inset: 0; z-index: var(--z-stage); }
.stage-layer canvas { display: block; width: 100%; height: 100%; touch-action: pan-y; }

.home-bottom {
  position: fixed;
  z-index: var(--z-ui);
  left: max(20px, env(safe-area-inset-left));
  right: max(20px, env(safe-area-inset-right));
  bottom: max(30px, env(safe-area-inset-bottom));
  display: grid;
  justify-items: center;
  gap: 16px;
  pointer-events: none;
}

.throw-controls { position: relative; display: grid; place-items: center; }

.throw-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  max-width: calc(100vw - 48px);
  padding: 16px 42px;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: .14em;
  color: #fff;
  background: var(--cinnabar-hi);
  border: 1px solid rgba(193, 154, 75, .18);
  border-radius: 999px;
  box-shadow:
    inset 0 0 0 1px rgba(193, 154, 75, .12),
    0 16px 36px -12px rgba(210, 59, 44, .55);
  pointer-events: auto;
  transition: transform .25s var(--ease), background .25s var(--ease),
    border-color .25s var(--ease), box-shadow .25s var(--ease);
}

.throw-button:hover:not(:disabled) {
  background: #b2291e;
  border-color: rgba(153, 121, 61, .72);
  transform: translateY(-2px);
  box-shadow:
    inset 0 0 0 1px rgba(193, 154, 75, .44),
    0 0 0 3px rgba(193, 154, 75, .10),
    0 18px 38px -13px rgba(210, 59, 44, .6),
    0 0 28px -14px var(--gold);
}

.throw-button:active:not(:disabled) { transform: translateY(1px); }

.throw-button:disabled { cursor: wait; opacity: .78; filter: saturate(.78); }

.throw-button.is-busy { letter-spacing: .3em; }

.gesture-control { position: absolute; left: calc(100% + 10px); top: 0; }

.gesture-toggle {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  color: var(--cinnabar-deep);
  background: rgba(251, 245, 233, .86);
  border: 1px solid var(--gold);
  border-radius: 999px;
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, .24),
    0 10px 25px -16px rgba(95, 7, 2, .7);
  pointer-events: auto;
  transition: transform .18s var(--ease), border-color .18s var(--ease),
    background-color .18s var(--ease), box-shadow .18s var(--ease);
}

.gesture-toggle:hover:not(:disabled) { transform: translateY(-1px); }

.gesture-toggle:disabled { cursor: not-allowed; opacity: .48; filter: grayscale(.55); }

.gesture-toggle[aria-pressed="true"] {
  background: var(--cinnabar-hi);
  color: #fff;
  border-color: var(--gold);
}

.gesture-toggle svg { width: 23px; height: 23px; }

.gesture-control.is-triggered .gesture-toggle { animation: gesture-triggered .42s var(--ease); }

@keyframes gesture-triggered {
  0%, 100% { transform: scale(1); }
  46% {
    transform: scale(.9);
    border-color: var(--gold);
    box-shadow: 0 0 0 7px rgba(193, 154, 75, .16);
  }
}

.gesture-status {
  position: absolute;
  bottom: calc(100% + 9px);
  left: 50%;
  width: max-content;
  max-width: 190px;
  margin: 0;
  padding: 5px 10px;
  font-family: var(--font-serif);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--cinnabar-deep);
  background: rgba(251, 245, 233, .96);
  border: 1px solid var(--gold);
  border-radius: 999px;
  transform: translate(-50%, 4px);
  opacity: 0;
  transition: opacity .2s var(--ease), transform .2s var(--ease);
  pointer-events: none;
}

.gesture-control.is-open .gesture-status,
.gesture-control:hover .gesture-status { opacity: 1; transform: translate(-50%, 0); }

.gesture-camera {
  position: absolute;
  bottom: calc(100% + 48px);
  right: -6px;
  width: 132px;
  height: 99px;
  object-fit: cover;
  border: 1px solid var(--gold);
  border-radius: 10px;
  background: #efe3d2;
  transform: scale(.9);
  opacity: 0;
  visibility: hidden;
  transition: opacity .24s var(--ease), transform .24s var(--ease), visibility .24s;
}

.gesture-control.is-live .gesture-camera { opacity: 1; transform: scale(1); visibility: visible; }

.throw-guide {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 12px;
  max-width: min(100%, 620px);
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-serif);
  font-size: .86rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--ink-60);
}

.throw-guide li { display: inline-flex; align-items: center; gap: 9px; white-space: nowrap; }

.throw-guide li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 999px;
  background: var(--cinnabar);
  box-shadow: 0 0 0 3px rgba(194, 46, 33, .18);
}

.throw-guide li:not(:last-child)::after {
  content: "";
  width: 28px;
  height: 1px;
  margin-left: 5px;
  background: linear-gradient(90deg, var(--ink-42), transparent);
}

/* ============ 结果弹层 ============ */

.result-dialog {
  width: min(92vw, 420px);
  max-height: 92svh;
  padding: 0;
  border: 0;
  border-radius: 18px;
  background: transparent;
  overflow: visible;
}

.result-dialog::backdrop { background: rgba(60, 30, 20, .28); backdrop-filter: blur(2px); }

.result-dialog-body {
  position: relative;
  max-height: 92svh;
  overflow-y: auto;
  padding: 18px;
  border-radius: 18px;
  background: var(--paper);
  box-shadow: 0 30px 70px -30px rgba(70, 25, 12, .5);
  opacity: 0;
  transform: translateY(14px) scale(.97);
  transition: opacity .3s var(--ease), transform .3s var(--ease);
}

.result-dialog[open] .result-dialog-body { opacity: 1; transform: none; }

.icon-button {
  position: absolute;
  z-index: 2;
  top: 12px;
  right: 12px;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  color: var(--ink-42);
  transition: color .16s var(--ease), background-color .16s var(--ease);
}

.icon-button:hover { color: var(--cinnabar-deep); background: rgba(43, 26, 18, .06); }

.icon-button svg { width: 16px; height: 16px; }

.share-preview {
  display: grid;
  place-items: center;
  min-height: 220px;
  margin: 34px 0 14px;
}

.share-preview img {
  display: block;
  width: 100%;
  max-width: 300px;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 14px 34px -18px rgba(70, 25, 12, .55);
  opacity: 0;
  transition: opacity .34s var(--ease);
}

.share-preview.is-ready img { opacity: 1; }

.share-tip {
  margin: 0;
  font-family: var(--font-serif);
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--ink-42);
  text-align: center;
}

.share-tip.is-ready { display: none; }

.dialog-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 6px;
}

.dialog-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-width: 130px;
  padding: 11px 18px;
  font-family: var(--font-sans);
  font-size: .92rem;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--cinnabar-deep);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: transform .18s var(--ease), background-color .18s var(--ease),
    border-color .18s var(--ease), color .18s var(--ease);
}

.dialog-button:hover { border-color: var(--gold); transform: translateY(-1px); }

.dialog-button.primary {
  color: #fff;
  background: var(--cinnabar-hi);
  border-color: transparent;
  box-shadow: 0 14px 30px -14px rgba(210, 59, 44, .7);
}

.dialog-button.primary:hover { background: #b2291d; }

.dialog-button svg { width: 16px; height: 16px; }

.result-headline {
  margin: 0 0 4px;
  font-family: var(--font-serif);
  font-size: 2.6rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-align: center;
  color: var(--cinnabar-deep);
}

.result-headline.is-pending { color: var(--ink-42); font-size: 1.7rem; letter-spacing: .14em; }

.result-sub {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: .9rem;
  line-height: 1.8;
  text-align: center;
  color: var(--ink-60);
}

.result-quote {
  margin: 0 0 18px;
  font-family: var(--font-serif);
  font-size: 1.02rem;
  line-height: 1.9;
  text-align: center;
  color: var(--ink);
}

.result-dialog .share-preview { min-height: 0; margin-top: 16px; }
.result-dialog .share-preview img { max-width: 258px; }

/* ============ 关于页 ============ */

.doc-shell {
  min-height: 100svh;
  background:
    radial-gradient(120% 60% at 50% -10%, rgba(226, 176, 152, .38) 0%, rgba(226, 176, 152, 0) 62%),
    linear-gradient(180deg, #f4e7db 0%, #f8f2e6 26%, #f8f2e6 74%, #f2e7d4 100%);
}

.doc-topbar {
  position: sticky;
  z-index: var(--z-ui);
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px max(20px, env(safe-area-inset-left)) 14px max(20px, env(safe-area-inset-right));
  background: rgba(248, 242, 230, .86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}

.doc-brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-serif);
  font-weight: 800;
  letter-spacing: .04em;
}

.doc-brand .name { font-size: 1.16rem; }
.doc-brand .sub { font-size: .72rem; font-weight: 700; color: var(--ink-42); letter-spacing: .16em; }

.doc-nav { display: flex; align-items: center; gap: 4px; font-family: var(--font-serif); font-size: .8rem; font-weight: 700; }

.doc-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 10px;
  color: var(--ink-60);
  border-radius: 999px;
  transition: color .16s var(--ease), background-color .16s var(--ease);
}

.doc-nav a:hover { color: var(--cinnabar-deep); background: rgba(43, 26, 18, .05); }
.doc-nav a.is-active { color: var(--cinnabar-deep); }

.doc-layout {
  display: grid;
  grid-template-columns: 190px minmax(0, 720px);
  justify-content: center;
  gap: 56px;
  padding: 46px 24px 96px;
}

.doc-toc { position: sticky; top: 92px; align-self: start; }

.doc-toc h2 {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-size: .92rem;
  font-weight: 800;
  letter-spacing: .08em;
}

.doc-toc ol { margin: 0; padding: 0; list-style: none; }

.doc-toc a {
  display: block;
  padding: 5px 0 5px 12px;
  font-family: var(--font-serif);
  font-size: .82rem;
  color: var(--ink-42);
  border-left: 2px solid transparent;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.doc-toc a:hover { color: var(--ink); }
.doc-toc a.is-active { color: var(--cinnabar-deep); border-left-color: var(--cinnabar); font-weight: 700; }

.doc-main { min-width: 0; }

.doc-eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: .84rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--cinnabar);
}

.doc-title {
  margin: 0 0 30px;
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  font-weight: 800;
  letter-spacing: .04em;
  line-height: 1.1;
}

.doc-section { margin-bottom: 46px; scroll-margin-top: 92px; }

.doc-section > h2 {
  margin: 0 0 4px;
  padding-bottom: 12px;
  font-family: var(--font-serif);
  font-size: 1.32rem;
  font-weight: 800;
  letter-spacing: .04em;
  border-bottom: 1px solid var(--line);
}

.doc-section h3 {
  margin: 26px 0 10px;
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: .04em;
}

.doc-section p {
  margin: 14px 0;
  font-family: var(--font-serif);
  font-size: .95rem;
  line-height: 2.05;
  color: #3d2a20;
}

.doc-section ul { margin: 14px 0; padding-left: 1.2em; }

.doc-section li {
  margin: 8px 0;
  font-family: var(--font-serif);
  font-size: .95rem;
  line-height: 1.95;
  color: #3d2a20;
}

.doc-card {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 18px 0;
  padding: 14px 16px;
  background: rgba(255, 253, 247, .7);
  border: 1px solid var(--line-soft);
  border-radius: 12px;
}

.doc-card .avatar {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  flex: none;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(150deg, var(--cinnabar-hi), var(--cinnabar-deep));
  border-radius: 999px;
}

.doc-card .who { font-family: var(--font-serif); font-size: .92rem; font-weight: 800; }
.doc-card .role { font-family: var(--font-serif); font-size: .78rem; color: var(--ink-42); margin-top: 2px; }

.doc-link {
  color: var(--cinnabar-deep);
  border-bottom: 1px solid rgba(143, 33, 24, .35);
  transition: border-color .16s var(--ease);
}

.doc-link:hover { border-color: var(--cinnabar-deep); }

.doc-table {
  width: 100%;
  margin: 18px 0;
  border-collapse: collapse;
  font-family: var(--font-serif);
  font-size: .86rem;
}

.doc-table th, .doc-table td {
  padding: 11px 12px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
}

.doc-table th { font-weight: 800; color: var(--ink-60); background: rgba(43, 26, 18, .03); }
.doc-table td { color: #3d2a20; }

.doc-note {
  margin: 18px 0;
  padding: 14px 16px;
  font-family: var(--font-serif);
  font-size: .86rem;
  line-height: 1.95;
  color: var(--ink-60);
  background: rgba(193, 154, 75, .10);
  border-left: 3px solid var(--gold);
  border-radius: 0 10px 10px 0;
}

.doc-list-plain { padding-left: 0; list-style: none; }

.doc-list-plain li {
  padding-left: 18px;
  position: relative;
}

.doc-list-plain li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .85em;
  width: 5px;
  height: 5px;
  border-radius: 999px;
  background: var(--cinnabar);
}

.doc-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  padding: 11px 20px;
  font-family: var(--font-serif);
  font-size: .88rem;
  font-weight: 700;
  color: var(--cinnabar-deep);
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: transform .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.doc-back:hover { border-color: var(--gold); transform: translateY(-1px); background: rgba(255, 253, 247, .8); }

.doc-foot {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-serif);
  font-size: .78rem;
  color: var(--ink-42);
}

@media (max-width: 860px) {
  .doc-layout { grid-template-columns: minmax(0, 1fr); gap: 26px; padding: 30px 20px 80px; }
  .doc-toc { position: static; }
  .doc-toc ol { display: flex; flex-wrap: wrap; gap: 4px 10px; }
  .doc-toc a { padding: 4px 0; border-left: 0; }
  .doc-toc a.is-active { border-left: 0; }
}

@media (max-width: 560px) {
  .brand-primary { font-size: 1.72rem; }
  .brand-ritual { font-size: .7rem; transform: translateY(1.2rem); }
  .brand-bar { top: 16px; left: 16px; }
  .tagline-banner { top: clamp(106px, 13vh, 132px); font-size: 1.72rem; letter-spacing: .1em; text-indent: .05em; }
  .utility-rail { top: 16px; right: 14px; font-size: .74rem; }
  .throw-button { padding: 15px 34px; }
  .gesture-toggle { width: 42px; height: 42px; }
  .throw-guide { font-size: .78rem; }
  .throw-guide li:not(:last-child)::after { width: 16px; }
  .gesture-camera { width: 108px; height: 81px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}