:root {
  color-scheme: light;
  --ink: #182238;
  --muted: #6f7684;
  --line: rgba(31, 42, 64, .12);
  --paper: #f5f2ea;
  --deep: #101935;
  --gold: #c6a65d;
  --white: #fff;
  font-family: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
}

* { box-sizing: border-box; }
html { width: 100%; max-width: 100%; overflow-x: hidden; background: #e9e7e1; }
body { margin: 0; width: 100%; max-width: 100%; min-width: 320px; overflow-x: hidden; color: var(--ink); background: radial-gradient(circle at 14% 0%, #fbfaf6 0, transparent 32rem), #e9e7e1; }
button, input, textarea, select { font: inherit; }
button, a, input, textarea, select { -webkit-tap-highlight-color: transparent; }

.topbar {
  height: 78px;
  padding: 12px max(18px, env(safe-area-inset-left));
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  background: rgba(247, 245, 239, .88);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand { font-size: 1.28rem; font-weight: 700; letter-spacing: .14em; }
.brand-note { margin-top: 4px; font-size: .74rem; color: var(--muted); letter-spacing: .08em; }
.quiet-button { border: 1px solid var(--line); background: rgba(255,255,255,.56); color: var(--ink); border-radius: 999px; padding: 9px 14px; cursor: pointer; }

.workspace { width: 100%; max-width: 1180px; min-width: 0; margin: 0 auto; padding: 24px; display: grid; grid-template-columns: minmax(360px, 510px) minmax(0, 1fr); gap: 34px; align-items: start; overflow: hidden; }
.preview-column { min-width: 0; position: sticky; top: 102px; text-align: center; }
.poster-frame { width: min(100%, 440px); aspect-ratio: 3 / 4; padding: 8px; margin: 0 auto; background: #fff; box-shadow: 0 24px 70px rgba(18, 26, 46, .20), 0 2px 8px rgba(18, 26, 46, .12); }
#previewCanvas { width: 100%; height: 100%; display: block; background: var(--deep); }
.preview-tip { margin: 13px 0 0; color: var(--muted); font-size: .82rem; letter-spacing: .06em; }

.editor { width: 100%; max-width: 100%; min-width: 0; display: grid; gap: 14px; padding-bottom: 36px; }
.panel { width: 100%; max-width: 100%; min-width: 0; overflow: hidden; background: rgba(255,255,255,.72); border: 1px solid rgba(255,255,255,.9); border-radius: 18px; padding: 20px; box-shadow: 0 8px 30px rgba(28, 35, 50, .055); }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.section-head > div { display: flex; align-items: center; gap: 9px; }
.section-head h2 { margin: 0; font-size: 1rem; letter-spacing: .08em; }
.step { width: 25px; height: 25px; border-radius: 50%; display: inline-grid; place-items: center; background: var(--deep); color: #ead59b; font-size: .76rem; }
.counter, .optional { color: var(--muted); font-size: .75rem; }

.poem-list { display: flex; width: 100%; max-width: 100%; min-width: 0; gap: 10px; overflow-x: auto; overflow-y: hidden; padding: 1px 1px 9px; scroll-snap-type: x mandatory; overscroll-behavior-x: contain; scrollbar-width: thin; }
.poem-card { flex: 0 0 185px; min-height: 112px; padding: 15px; border: 1px solid var(--line); border-radius: 13px; background: rgba(255,255,255,.65); color: var(--ink); text-align: left; cursor: pointer; scroll-snap-align: start; transition: .2s ease; }
.poem-card:hover { transform: translateY(-2px); }
.poem-card[aria-selected="true"] { color: #f8f1dc; background: var(--deep); border-color: var(--deep); box-shadow: 0 8px 20px rgba(16,25,53,.22); }
.poem-card strong { display: block; font-size: .9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.poem-card span { display: block; margin-top: 5px; font-size: .72rem; opacity: .68; }
.poem-card p { margin: 12px 0 0; font-size: .78rem; line-height: 1.6; opacity: .86; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

.style-list { display: grid; width: 100%; min-width: 0; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.style-card { min-width: 0; border: 1px solid var(--line); border-radius: 13px; padding: 5px; background: white; color: var(--ink); cursor: pointer; }
.style-card[aria-checked="true"] { border-color: #947533; box-shadow: 0 0 0 2px rgba(198,166,93,.32); }
.style-swatch { display: block; aspect-ratio: 4 / 3; border-radius: 9px; background-size: cover; background-position: center; }
.style-card b { display: block; padding: 9px 3px 5px; font-size: .78rem; font-weight: 600; white-space: nowrap; }

.toggle-row { display: flex; align-items: center; justify-content: space-between; gap: 15px; cursor: pointer; }
.toggle-row span { display: grid; gap: 5px; }
.toggle-row strong { font-size: .92rem; }
.toggle-row small { color: var(--muted); font-size: .75rem; }
.toggle-row input { position: absolute; opacity: 0; pointer-events: none; }
.toggle-row i { flex: 0 0 auto; width: 46px; height: 27px; border-radius: 99px; background: #c8c9c8; position: relative; transition: .2s; }
.toggle-row i::after { content: ""; width: 21px; height: 21px; border-radius: 50%; background: white; position: absolute; top: 3px; left: 3px; box-shadow: 0 1px 4px rgba(0,0,0,.28); transition: .2s; }
.toggle-row input:checked + i { background: var(--deep); }
.toggle-row input:checked + i::after { transform: translateX(19px); }
.signature-toggle { margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--line); }
.reveal { margin-top: 13px; }
.reveal[hidden] { display: none; }
textarea, input, select { width: 100%; border: 1px solid var(--line); border-radius: 11px; background: rgba(255,255,255,.82); color: var(--ink); padding: 12px 13px; outline: none; }
textarea:focus, input:focus, select:focus { border-color: #a58748; box-shadow: 0 0 0 3px rgba(198,166,93,.15); }
textarea { resize: vertical; min-height: 74px; line-height: 1.6; }
.preset-row { display: flex; gap: 7px; margin-top: 9px; overflow-x: auto; }
.preset-row button { white-space: nowrap; border: 1px solid var(--line); background: transparent; border-radius: 99px; padding: 7px 11px; color: var(--muted); cursor: pointer; font-size: .74rem; }
.signature-fields { grid-template-columns: 1fr 1fr; gap: 9px; }
.signature-fields:not([hidden]) { display: grid; }

.generate-button { border: 0; border-radius: 15px; padding: 17px 21px; background: var(--deep); color: #f2deb0; display: flex; justify-content: space-between; align-items: center; font-size: 1rem; letter-spacing: .08em; cursor: pointer; box-shadow: 0 10px 28px rgba(16,25,53,.26); }
.generate-button b { font-family: system-ui, sans-serif; font-size: 1.35rem; font-weight: 400; transition: .2s; }
.generate-button:hover b { transform: translateX(4px); }
.page-notes { display: grid; gap: 4px; margin-top: -3px; text-align: center; }
.fineprint, .site-credit { margin: 0; color: var(--muted); font-size: .7rem; }
.site-credit { font-size: .75rem; letter-spacing: .03em; }
.site-credit a { margin: 0 .2em; color: var(--deep); font-weight: 400; text-decoration: underline; text-decoration-color: rgba(16,25,53,.42); text-underline-offset: 3px; }
.site-credit a:hover { text-decoration-color: var(--deep); }

.result-dialog { width: min(92vw, 510px); max-height: 94vh; padding: 0; border: 0; border-radius: 20px; background: transparent; }
.result-dialog::backdrop { background: rgba(8,12,24,.75); backdrop-filter: blur(5px); }
.dialog-card { position: relative; background: #f6f4ef; padding: 22px; border-radius: 20px; text-align: center; }
.dialog-card h2 { margin: 0; font-size: 1.2rem; letter-spacing: .08em; }
.dialog-card > p { margin: 8px 0 16px; color: var(--muted); font-size: .82rem; }
.dialog-card img { display: block; max-height: 62vh; max-width: 100%; margin: 0 auto; box-shadow: 0 12px 35px rgba(18,26,46,.24); -webkit-touch-callout: default; user-select: auto; }
.close-button { position: absolute; right: 12px; top: 10px; width: 34px; height: 34px; border: 0; border-radius: 50%; background: rgba(0,0,0,.06); color: var(--ink); font: 24px/1 system-ui; cursor: pointer; }
.result-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; margin-top: 17px; }
.result-actions[hidden] { display: none; }
.result-actions button, .result-actions a { border: 1px solid var(--deep); border-radius: 11px; padding: 12px; text-decoration: none; cursor: pointer; }
.result-actions button { background: var(--deep); color: white; }
.result-actions a { background: transparent; color: var(--deep); }
.wechat-save-tip { margin-top: 16px; padding: 13px 15px; border: 1px solid rgba(164,126,53,.28); border-radius: 12px; background: rgba(231,199,120,.13); color: var(--deep); }
.wechat-save-tip[hidden] { display: none; }
.wechat-save-tip strong, .wechat-save-tip span { display: block; }
.wechat-save-tip strong { font-size: .92rem; letter-spacing: .06em; }
.wechat-save-tip span { margin-top: 5px; color: var(--muted); font-size: .75rem; }
.dialog-card > small { display: block; margin-top: 11px; color: var(--muted); font-size: .7rem; }

@media (max-width: 800px) {
  .topbar { height: 68px; }
  .brand { font-size: 1.12rem; }
  .brand-note { display: none; }
  .workspace { display: block; width: 100%; max-width: 100%; min-width: 0; padding: 15px 14px calc(24px + env(safe-area-inset-bottom)); overflow: hidden; }
  .preview-column, .editor, .panel { width: 100%; max-width: 100%; min-width: 0; }
  .preview-column { position: static; }
  .poster-frame { width: min(82vw, 350px); max-width: 100%; }
  #previewCanvas { max-width: 100%; }
  .preview-tip { margin-bottom: 17px; }
  .editor { gap: 12px; }
  .panel { padding: 17px 15px; border-radius: 16px; }
  .poem-list { width: 100%; max-width: 100%; min-width: 0; }
  .poem-card { flex-basis: 168px; min-height: 104px; }
  .style-card b { font-size: .72rem; }
  .generate-button { position: sticky; bottom: max(10px, env(safe-area-inset-bottom)); z-index: 7; }
}

@media (max-width: 390px) {
  .poster-frame { width: min(86vw, 350px); max-width: 100%; }
  .style-list { gap: 7px; }
  .style-card b { letter-spacing: -.04em; }
  .signature-fields { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}