:root {
  --paper: #efe7d6;
  --paper-light: #f8f3e8;
  --paper-deep: #e4d8c2;
  --ink: #201b15;
  --ink-soft: #51473c;
  --muted: #695f53;
  --line: rgba(32, 27, 21, 0.16);
  --line-strong: rgba(32, 27, 21, 0.34);
  --cinnabar: #b83b27;
  --cinnabar-dark: #86291b;
  --gold: #a78348;
  --field: #f4eee1;
  --font-serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --page-gutter: clamp(20px, 4.2vw, 64px);
  --max-width: 1520px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  color-scheme: light;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    radial-gradient(ellipse at 8% -5%, rgba(255, 255, 255, 0.74), transparent 38%),
    radial-gradient(ellipse at 92% 104%, rgba(167, 131, 72, 0.12), transparent 42%);
  font-family: var(--font-serif);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.22;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.72' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.18'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

::selection {
  color: var(--paper-light);
  background: var(--cinnabar);
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
  text-decoration-color: rgba(184, 59, 39, 0.55);
  text-underline-offset: 0.24em;
}

a:hover {
  color: var(--cinnabar-dark);
}

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  color: var(--paper-light);
  background: var(--ink);
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site {
  position: relative;
  z-index: 1;
  min-height: 100vh;
}

.masthead {
  width: min(100%, var(--max-width));
  margin: 0 auto;
  padding: 20px var(--page-gutter);
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto minmax(180px, 1fr);
  gap: 24px;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  gap: 14px;
  align-items: center;
  width: max-content;
  color: var(--ink);
  text-decoration: none;
}

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

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  color: var(--paper-light);
  background: var(--cinnabar);
  border: 1px solid var(--cinnabar-dark);
  font-size: 1.55rem;
  line-height: 1;
  transform: rotate(-2.2deg);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.brand-name {
  font-size: 1.24rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.brand-sub {
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.mode-nav {
  display: flex;
  gap: clamp(18px, 2.5vw, 38px);
  align-items: center;
  justify-content: center;
}

.mode-tab {
  position: relative;
  padding: 9px 0 10px;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.76rem;
  letter-spacing: 0.11em;
  cursor: pointer;
  transition: color 180ms ease;
}

.mode-tab span {
  margin-right: 6px;
  color: var(--cinnabar);
  font-size: 0.58rem;
  letter-spacing: 0.04em;
  vertical-align: 0.16em;
}

.mode-tab::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 2px;
  background: var(--cinnabar);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 220ms ease;
}

.mode-tab:hover,
.mode-tab[aria-selected="true"] {
  color: var(--ink);
}

.mode-tab[aria-selected="true"]::after {
  transform: scaleX(1);
}

.header-date {
  justify-self: end;
  display: flex;
  gap: 10px;
  align-items: baseline;
  font-family: var(--font-sans);
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

.header-date strong {
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 1.04rem;
  font-weight: 500;
  letter-spacing: 0.08em;
}

main {
  width: min(100%, var(--max-width));
  margin: 0 auto;
  padding: 0 var(--page-gutter);
}

.boot {
  display: grid;
  place-items: center;
  align-content: center;
  gap: 18px;
  min-height: 70vh;
  color: var(--muted);
  text-align: center;
}

.boot-mark {
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  color: var(--paper-light);
  background: var(--cinnabar);
  font-size: 2rem;
  transform: rotate(-3deg);
}

.boot p {
  margin: 0;
  font-size: 0.92rem;
  letter-spacing: 0.18em;
}

.boot strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 1.4rem;
}

.boot code {
  display: inline-block;
  margin-top: 8px;
  padding: 8px 12px;
  color: var(--ink);
  background: var(--field);
  border: 1px solid var(--line);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.78rem;
}

.view {
  min-height: calc(100vh - 190px);
  animation: view-in 420ms ease both;
}

.view[hidden] {
  display: none;
}

@keyframes view-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.eyebrow {
  margin: 0;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.text-btn {
  padding: 4px 0;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink-soft);
  font-family: var(--font-sans);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 160ms ease, border-color 160ms ease;
}

.text-btn:hover {
  color: var(--cinnabar-dark);
  border-color: var(--cinnabar);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: color 170ms ease, background 170ms ease, border-color 170ms ease, transform 170ms ease;
}

.btn:hover {
  color: var(--paper-light);
  background: var(--ink);
  border-color: var(--ink);
}

.btn:active {
  transform: translateY(1px);
}

.btn--ink {
  color: var(--paper-light);
  background: var(--ink);
  border-color: var(--ink);
}

.btn--ink:hover {
  background: var(--cinnabar-dark);
  border-color: var(--cinnabar-dark);
}

.btn--wide {
  width: 100%;
  margin-top: 24px;
}

/* ——— Today ——— */

.today-grid {
  display: grid;
  grid-template-columns: minmax(188px, 2.15fr) minmax(0, 6.8fr) minmax(220px, 3.05fr);
  min-height: calc(100vh - 186px);
}

.date-column {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: clamp(40px, 5vw, 74px) clamp(24px, 3vw, 46px) 36px 0;
  border-right: 1px solid var(--line);
}

.date-number {
  margin: clamp(16px, 3vh, 34px) 0 0 -0.09em;
  color: transparent;
  font-size: clamp(9rem, 18vw, 17rem);
  font-weight: 500;
  line-height: 0.7;
  letter-spacing: -0.09em;
  -webkit-text-stroke: 1px rgba(32, 27, 21, 0.78);
  text-shadow: 5px 5px 0 rgba(184, 59, 39, 0.08);
  font-variant-numeric: lining-nums;
}

.date-month {
  margin: 30px 0 7px;
  font-size: 1.02rem;
  letter-spacing: 0.16em;
}

.date-weekday,
.date-season {
  margin: 0;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.13em;
}

.date-rule {
  width: 54px;
  height: 1px;
  margin: 28px 0 20px;
  background: var(--cinnabar);
}

.date-season {
  color: var(--cinnabar-dark);
  font-family: var(--font-serif);
  font-size: 0.96rem;
  letter-spacing: 0.28em;
}

.date-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  margin-top: auto;
  padding-top: 34px;
}

.date-actions .btn {
  width: 100%;
}

.poem-stage {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: clamp(40px, 5vw, 74px) clamp(30px, 4.5vw, 74px) 38px;
  border-right: 1px solid var(--line);
}

.poem-stage::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 20px;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--line) 16%, var(--line) 84%, transparent);
  opacity: 0.46;
  pointer-events: none;
}

.poem-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  align-items: center;
  min-height: 28px;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.67rem;
  letter-spacing: 0.1em;
}

.poem-meta span + span:not(.dynasty-chip)::before {
  content: "／";
  margin-right: 16px;
  color: var(--line-strong);
}

.dynasty-chip {
  display: inline-grid;
  place-items: center;
  min-width: 30px;
  height: 26px;
  padding: 0 8px;
  color: var(--paper-light);
  background: var(--ink);
  font-family: var(--font-serif);
  font-size: 0.84rem;
  letter-spacing: 0.12em;
}

.poem-title {
  max-width: 11em;
  margin: clamp(16px, 2.4vh, 28px) 0 8px;
  font-size: clamp(2.45rem, 5vw, 5.6rem);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.poet {
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.4vw, 1.18rem);
  letter-spacing: 0.24em;
}

.poem-body {
  --fit-size: 30px;
  display: flex;
  flex-direction: row-reverse;
  justify-content: flex-start;
  gap: clamp(13px, 1.5vw, 22px);
  height: min(48vh, 520px);
  min-height: 290px;
  margin-top: clamp(24px, 4vh, 44px);
  padding: 4px 2px 8px;
  overflow: hidden;
}

.poem-line {
  display: block;
  margin: 0;
  color: var(--ink);
  font-size: var(--fit-size);
  line-height: 1.45;
  letter-spacing: 0.14em;
  white-space: nowrap;
  writing-mode: vertical-rl;
  text-orientation: upright;
  animation: line-in 600ms cubic-bezier(0.22, 0.72, 0.24, 1) both;
  animation-delay: calc(var(--i, 0) * 55ms + 80ms);
}

@keyframes line-in {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.poem-body.is-prose {
  display: block;
  max-height: min(50vh, 560px);
  overflow-y: auto;
  padding-right: 14px;
  column-count: 2;
  column-gap: clamp(28px, 4vw, 56px);
  scrollbar-color: var(--line-strong) transparent;
  scrollbar-width: thin;
}

.poem-body.is-prose .poem-line {
  display: block;
  margin-bottom: 0.32em;
  font-size: clamp(0.98rem, 1.25vw, 1.12rem);
  line-height: 1.95;
  letter-spacing: 0.055em;
  white-space: normal;
  writing-mode: horizontal-tb;
  break-inside: avoid;
}

.tag-line {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: auto;
  padding-top: 28px;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
}

.tag-line span::before {
  content: "#";
  margin-right: 3px;
  color: var(--cinnabar);
}

.notes-column {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: clamp(40px, 5vw, 74px) 0 36px clamp(24px, 3vw, 46px);
}

.seal {
  display: grid;
  grid-template-columns: 1fr 1fr;
  place-items: center;
  width: 70px;
  height: 70px;
  padding: 8px;
  border: 2px solid var(--cinnabar);
  color: var(--cinnabar);
  font-size: 0.88rem;
  line-height: 1;
  transform: rotate(-3.5deg);
  box-shadow: inset 0 0 0 3px var(--paper), inset 0 0 0 4px var(--cinnabar);
}

.seal span {
  writing-mode: vertical-rl;
  text-orientation: upright;
  letter-spacing: 0.06em;
}

.facts {
  display: grid;
  gap: 0;
  width: 100%;
  margin: 38px 0 0;
}

.facts div {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.facts dt {
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
}

.facts dd {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.86rem;
  line-height: 1.55;
  letter-spacing: 0.035em;
}

.action-stack {
  display: grid;
  gap: 9px;
  width: 100%;
  margin-top: 30px;
}

.source-note {
  margin: auto 0 0;
  padding-top: 36px;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.64rem;
  line-height: 1.8;
  letter-spacing: 0.03em;
}

/* ——— Shared section header ——— */

.section-head {
  display: flex;
  gap: 32px;
  align-items: end;
  justify-content: space-between;
  padding: clamp(38px, 5vw, 66px) 0 30px;
  border-bottom: 1px solid var(--line-strong);
}

.section-title {
  margin: 12px 0 0;
  font-size: clamp(3rem, 7vw, 7rem);
  font-weight: 500;
  line-height: 0.96;
  letter-spacing: -0.055em;
}

.section-intro {
  max-width: 27em;
  margin: 0 0 4px;
  color: var(--ink-soft);
  font-size: 0.94rem;
  line-height: 1.8;
  letter-spacing: 0.04em;
  text-align: right;
}

/* ——— Calendar ——— */

.calendar-head {
  align-items: end;
}

.month-title {
  display: flex;
  gap: 18px;
  align-items: baseline;
  margin: 10px 0 0;
  font-size: clamp(4.5rem, 11vw, 10rem);
  font-weight: 500;
  line-height: 0.82;
  letter-spacing: -0.07em;
}

.month-title small {
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: clamp(0.72rem, 1vw, 0.9rem);
  font-weight: 400;
  letter-spacing: 0.12em;
}

.month-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
}

.calendar-wrap {
  margin-top: 26px;
  border-top: 1px solid var(--line-strong);
  border-left: 1px solid var(--line-strong);
}

.calendar-weekdays,
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
}

.calendar-weekdays span {
  padding: 10px 12px;
  border-right: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-align: center;
}

.calendar-cell {
  position: relative;
  min-height: 118px;
  padding: 12px 13px 11px;
  border: 0;
  border-right: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  transition: color 150ms ease, background 150ms ease;
}

.calendar-cell:hover {
  color: var(--paper-light);
  background: var(--ink);
}

.calendar-cell.is-blank {
  cursor: default;
  background-image: repeating-linear-gradient(-45deg, transparent 0 12px, rgba(32, 27, 21, 0.025) 12px 13px);
}

.calendar-cell.is-blank:hover {
  color: var(--ink);
  background-color: transparent;
}

.calendar-daynum {
  display: block;
  font-size: 1.32rem;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.03em;
}

.calendar-cell.is-today .calendar-daynum {
  color: var(--cinnabar);
}

.calendar-cell.is-today:hover .calendar-daynum {
  color: #ffd8cd;
}

.calendar-cell.is-selected {
  color: var(--paper-light);
  background: var(--ink);
}

.calendar-cell.is-selected .calendar-daynum {
  color: #ffd8cd;
}

.calendar-poem-title,
.calendar-poem-author {
  display: block;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.calendar-poem-title {
  margin-top: 19px;
  font-size: 0.82rem;
  letter-spacing: 0.025em;
}

.calendar-poem-author {
  margin-top: 5px;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
}

.calendar-cell:hover .calendar-poem-author,
.calendar-cell.is-selected .calendar-poem-author {
  color: rgba(248, 243, 232, 0.62);
}

.calendar-footnote {
  margin: 18px 0 46px;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.68rem;
  letter-spacing: 0.07em;
  text-align: right;
}

/* ——— Feihua ——— */

.feihua-grid {
  display: grid;
  grid-template-columns: minmax(260px, 4fr) minmax(0, 8fr);
  min-height: 640px;
}

.feihua-search {
  padding: clamp(38px, 5vw, 66px) clamp(28px, 4vw, 58px) 42px 0;
  border-right: 1px solid var(--line-strong);
}

.char-display {
  position: relative;
  display: grid;
  place-items: center;
  width: clamp(190px, 20vw, 292px);
  aspect-ratio: 1;
  margin-bottom: 36px;
}

.char-display::before,
.char-display::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid var(--line-strong);
  pointer-events: none;
}

.char-display::before {
  transform: rotate(2.4deg);
}

.char-display::after {
  inset: 12px;
  border-color: rgba(184, 59, 39, 0.32);
}

.char-display span {
  position: relative;
  z-index: 1;
  color: var(--cinnabar);
  font-size: clamp(8.5rem, 15vw, 13.5rem);
  line-height: 0.82;
  text-shadow: 5px 5px 0 rgba(184, 59, 39, 0.08);
}

.char-display small {
  position: absolute;
  right: 16px;
  bottom: 14px;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.58rem;
  letter-spacing: 0.16em;
}

.feihua-search label,
.search-field > span {
  display: block;
  margin-bottom: 9px;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
}

.input-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

.input-row input,
.search-field input {
  width: 100%;
  min-height: 48px;
  padding: 10px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: var(--field);
  color: var(--ink);
  font-size: 1.06rem;
  letter-spacing: 0.08em;
  appearance: none;
}

.input-row input::placeholder,
.search-field input::placeholder {
  color: #998d7c;
}

.input-row input:focus,
.search-field input:focus {
  border-color: var(--cinnabar);
  outline: 1px solid var(--cinnabar);
  outline-offset: 1px;
}

.quick-chars {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.char-chip {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid var(--line);
  background: transparent;
  font-size: 0.95rem;
  cursor: pointer;
  transition: color 150ms ease, background 150ms ease, border-color 150ms ease;
}

.char-chip:hover,
.char-chip[aria-pressed="true"] {
  color: var(--paper-light);
  background: var(--cinnabar);
  border-color: var(--cinnabar);
}

.feihua-stats {
  margin: 30px 0 0;
  color: var(--ink-soft);
  font-size: 0.87rem;
  line-height: 1.8;
  letter-spacing: 0.06em;
}

.feihua-results {
  min-width: 0;
  padding: clamp(38px, 5vw, 66px) 0 46px clamp(28px, 4.5vw, 70px);
}

.inspiration {
  min-height: 150px;
  padding: 8px 0 30px;
  border-bottom: 1px solid var(--line-strong);
}

.inspiration-line {
  max-width: 22em;
  margin: 0;
  font-size: clamp(1.55rem, 3.1vw, 3.15rem);
  line-height: 1.55;
  letter-spacing: 0.035em;
  text-wrap: balance;
}

.inspiration-meta {
  margin: 20px 0 0;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.67rem;
  letter-spacing: 0.1em;
}

.match-head {
  display: flex;
  gap: 20px;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0 12px;
}

.match-list {
  border-top: 1px solid var(--line);
}

.match-item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: baseline;
  width: 100%;
  padding: 15px 0;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: color 150ms ease, padding-left 180ms ease;
}

.match-item:hover {
  padding-left: 10px;
  color: var(--cinnabar-dark);
}

.match-index {
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.59rem;
  letter-spacing: 0.06em;
}

.match-line {
  font-size: 1rem;
  line-height: 1.65;
  letter-spacing: 0.035em;
}

.match-source {
  max-width: 13em;
  overflow: hidden;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.64rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
  text-overflow: ellipsis;
}

mark {
  padding: 0 0.03em;
  color: var(--cinnabar);
  background: transparent;
  border-bottom: 2px solid var(--cinnabar);
}

.empty-state {
  padding: 42px 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
  letter-spacing: 0.06em;
}

/* ——— Library ——— */

.library-tools {
  display: grid;
  grid-template-columns: minmax(260px, 440px) 1fr;
  gap: 36px;
  align-items: end;
  padding: 30px 0 22px;
  border-bottom: 1px solid var(--line);
}

.filter-row {
  display: flex;
  gap: 22px;
  justify-content: flex-end;
  padding-bottom: 2px;
}

.filter-btn {
  padding: 6px 0;
  border: 0;
  border-bottom: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.76rem;
  letter-spacing: 0.11em;
  cursor: pointer;
}

.filter-btn:hover,
.filter-btn.is-active {
  color: var(--ink);
  border-color: var(--cinnabar);
}

.library-count {
  margin: 16px 0 0;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.68rem;
  letter-spacing: 0.09em;
  text-align: right;
}

.library-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: clamp(34px, 6vw, 96px);
  border-top: 1px solid var(--line-strong);
}

.library-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 22px;
  align-items: start;
  min-width: 0;
  padding: 21px 0 19px;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: color 160ms ease, padding-left 180ms ease;
}

.library-item:hover {
  padding-left: 8px;
  color: var(--cinnabar-dark);
}

.library-item-title {
  display: block;
  margin: 0;
  overflow: hidden;
  font-size: 1.18rem;
  font-weight: 500;
  letter-spacing: 0.025em;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.library-item-meta {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
}

.library-item-snippet {
  display: block;
  margin-top: 9px;
  overflow: hidden;
  color: var(--ink-soft);
  font-size: 0.82rem;
  letter-spacing: 0.025em;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.library-index {
  padding-top: 4px;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.58rem;
  letter-spacing: 0.06em;
}

/* ——— Dialog ——— */

.poem-dialog {
  width: min(920px, calc(100vw - 32px));
  max-height: calc(100vh - 48px);
  margin: auto;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: var(--paper-light);
  color: var(--ink);
  box-shadow: 13px 13px 0 rgba(32, 27, 21, 0.2);
}

.poem-dialog::backdrop {
  background: rgba(32, 27, 21, 0.56);
}

.dialog-head {
  display: flex;
  gap: 20px;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--line-strong);
}

.dialog-close {
  padding: 4px 0;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  background: transparent;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  cursor: pointer;
}

.dialog-close:hover {
  color: var(--cinnabar-dark);
  border-color: var(--cinnabar);
}

.dialog-content {
  max-height: calc(100vh - 200px);
  padding: 30px clamp(24px, 5vw, 58px) 20px;
  overflow-y: auto;
}

.dialog-content h2 {
  max-width: 13em;
  margin: 0 0 9px;
  font-size: clamp(2.2rem, 5vw, 4.2rem);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.dialog-content .poem-body {
  height: min(48vh, 470px);
  margin-top: 24px;
}

.dialog-content .tag-line {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.dialog-actions {
  display: flex;
  gap: 9px;
  justify-content: flex-end;
  padding: 16px 24px 20px;
  border-top: 1px solid var(--line);
}

/* ——— Toast & footer ——— */

.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 120;
  max-width: min(360px, calc(100vw - 48px));
  padding: 12px 16px;
  color: var(--paper-light);
  background: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.76rem;
  line-height: 1.6;
  letter-spacing: 0.05em;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.site-footer {
  display: flex;
  gap: 24px;
  justify-content: space-between;
  width: min(100%, var(--max-width));
  margin: 0 auto;
  padding: 26px var(--page-gutter) 30px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.63rem;
  line-height: 1.7;
  letter-spacing: 0.04em;
}

.site-footer p {
  margin: 0;
}

.site-footer strong {
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
}

/* ——— Responsive ——— */

@media (max-width: 1120px) {
  .masthead {
    grid-template-columns: 1fr auto;
  }

  .mode-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: flex-start;
    padding-top: 4px;
    border-top: 1px solid var(--line);
  }

  .header-date {
    grid-column: 2;
    grid-row: 1;
  }

  .today-grid {
    grid-template-columns: minmax(168px, 2fr) minmax(0, 6fr);
  }

  .date-column {
    min-height: 680px;
  }

  .notes-column {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 90px minmax(0, 1fr) minmax(220px, 0.72fr);
    gap: 30px;
    align-items: start;
    padding: 34px 0;
    border-top: 1px solid var(--line);
  }

  .facts {
    margin-top: 0;
  }

  .action-stack {
    margin-top: 0;
  }

  .source-note {
    grid-column: 2 / -1;
    margin: 0;
    padding-top: 0;
  }

  .feihua-grid {
    grid-template-columns: minmax(240px, 4fr) minmax(0, 7fr);
  }
}

@media (max-width: 780px) {
  .masthead {
    gap: 14px;
    padding-top: 15px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
    font-size: 1.32rem;
  }

  .brand-name {
    font-size: 1.08rem;
  }

  .brand-sub,
  .header-date span {
    display: none;
  }

  .header-date strong {
    font-size: 0.88rem;
  }

  .mode-nav {
    gap: 21px;
    overflow-x: auto;
    padding: 12px 0 2px;
    scrollbar-width: none;
  }

  .mode-nav::-webkit-scrollbar {
    display: none;
  }

  .mode-tab {
    flex: 0 0 auto;
    padding-top: 6px;
  }

  .mode-tab span {
    display: none;
  }

  .today-grid {
    display: block;
  }

  .date-column {
    display: grid;
    grid-template-columns: auto 1fr;
    column-gap: 22px;
    min-height: 0;
    padding: 26px 0 30px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .date-column .eyebrow {
    grid-column: 1 / -1;
  }

  .date-number {
    grid-row: 2 / 5;
    align-self: center;
    margin: 12px 0 0 -0.08em;
    font-size: clamp(7.8rem, 34vw, 11rem);
  }

  .date-month {
    align-self: end;
    margin: 20px 0 5px;
  }

  .date-weekday,
  .date-season {
    grid-column: 2;
  }

  .date-rule {
    display: none;
  }

  .date-actions {
    grid-column: 2;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    margin-top: 15px;
    padding-top: 0;
  }

  .date-actions .btn {
    width: auto;
  }

  .poem-stage {
    padding: 32px 0 28px;
    border-right: 0;
  }

  .poem-stage::before {
    display: none;
  }

  .poem-title {
    max-width: none;
    margin-top: 20px;
    font-size: clamp(2.35rem, 11vw, 4.5rem);
  }

  .poem-body,
  .poem-body.is-prose {
    display: block;
    height: auto;
    max-height: none;
    min-height: 0;
    margin-top: 28px;
    padding: 0;
    column-count: auto;
  }

  .poem-body .poem-line,
  .poem-body.is-prose .poem-line {
    display: block;
    margin: 0;
    font-size: clamp(1.08rem, 4.8vw, 1.42rem);
    line-height: 2.03;
    letter-spacing: 0.055em;
    white-space: normal;
    writing-mode: horizontal-tb;
  }

  .tag-line {
    padding-top: 23px;
  }

  .notes-column {
    display: block;
    padding: 30px 0 42px;
  }

  .seal {
    width: 58px;
    height: 58px;
    margin-bottom: 28px;
    font-size: 0.78rem;
  }

  .facts {
    margin-top: 0;
  }

  .action-stack {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 24px;
  }

  .action-stack .btn {
    padding-inline: 8px;
    font-size: 0.68rem;
  }

  .source-note {
    padding-top: 24px;
  }

  .section-head {
    display: block;
    padding-top: 34px;
  }

  .section-title {
    font-size: clamp(3.35rem, 17vw, 5.8rem);
  }

  #view-library .section-title {
    font-size: clamp(2.9rem, 14vw, 5.8rem);
  }

  .section-intro {
    margin-top: 24px;
    text-align: left;
  }

  .calendar-head {
    display: flex;
    align-items: end;
  }

  .month-title {
    font-size: clamp(4.2rem, 20vw, 7rem);
  }

  .month-nav {
    justify-content: flex-end;
    gap: 12px;
  }

  .month-nav .text-btn {
    font-size: 0.67rem;
  }

  .calendar-wrap {
    margin-top: 20px;
  }

  .calendar-weekdays span {
    padding: 8px 4px;
  }

  .calendar-cell {
    min-height: 62px;
    padding: 9px 8px;
  }

  .calendar-daynum {
    font-size: 1rem;
  }

  .calendar-poem-title {
    margin-top: 10px;
    font-size: 0.63rem;
  }

  .calendar-poem-author {
    display: none;
  }

  .calendar-footnote {
    text-align: left;
  }

  .feihua-grid {
    display: block;
  }

  .feihua-search {
    padding: 30px 0 34px;
    border-right: 0;
    border-bottom: 1px solid var(--line-strong);
  }

  .char-display {
    width: 150px;
    margin-bottom: 26px;
  }

  .char-display span {
    font-size: 7.5rem;
  }

  .feihua-results {
    padding: 34px 0 42px;
  }

  .inspiration {
    min-height: 0;
  }

  .match-item {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 8px;
  }

  .match-source {
    grid-column: 2;
    max-width: none;
    margin-top: 3px;
  }

  .library-tools {
    display: block;
    padding: 24px 0 18px;
  }

  .filter-row {
    justify-content: flex-start;
    margin-top: 17px;
  }

  .library-count {
    text-align: left;
  }

  .library-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .library-item {
    padding-block: 18px;
  }

  .poem-dialog {
    width: calc(100vw - 20px);
    max-height: calc(100vh - 20px);
  }

  .dialog-content {
    max-height: calc(100vh - 180px);
    padding-top: 24px;
  }

  .dialog-content .poem-body {
    height: auto;
    max-height: none;
  }

  .dialog-actions {
    padding-inline: 16px;
  }

  .site-footer {
    display: block;
  }

  .site-footer p + p {
    margin-top: 6px;
  }

  .toast {
    right: 14px;
    bottom: 14px;
  }
}

@media (max-width: 430px) {
  .action-stack {
    grid-template-columns: 1fr;
  }

  .calendar-head {
    display: block;
  }

  .month-nav {
    justify-content: flex-start;
    margin-top: 22px;
  }
}

@media (max-width: 520px) {
  .calendar-cell {
    min-height: 54px;
  }

  .calendar-poem-title {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-delay: 0ms !important;
    transition-duration: 0.001ms !important;
  }
}