@font-face {
  font-family: "WanHe Display";
  src: url("/fonts/wanhe-display.woff2") format("woff2");
  font-display: block;
}

@font-face {
  font-family: "WanHe CJK";
  src: url("/fonts/wanhe-cjk-regular.woff2?v=11") format("woff2");
  font-weight: 400;
  font-display: block;
}

:root {
  --paper: #fff2ed;
  --ink: #160000;
  --ink-soft: #4d4040;
  --line: rgba(22, 0, 0, 0.72);
  --display: "WanHe Display", "Arial Narrow", Impact, sans-serif;
  --editorial: Georgia, "Times New Roman", serif;
  --cjk: "WanHe CJK", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --cjk-user: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "WanHe CJK", sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas;
  color-scheme: light;
}

html.fonts-ready {
  --cjk: "WanHe CJK", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--ink); }
html.is-scroll-blocked, html.is-scroll-blocked body { overflow: hidden; }
html.is-scroll-blocked .site-header,
html.is-scroll-blocked .wave-field,
html.is-scroll-blocked .data-separator,
html.is-scroll-blocked .hero-title { opacity: 0; }
body {
  margin: 0;
  padding: 1rem;
  min-width: 320px;
  min-height: 100vh;
  background: var(--ink);
  color: var(--ink);
  font-family: var(--mono), var(--cjk), monospace;
  text-rendering: optimizeLegibility;
}
button, input, textarea, select { font: inherit; color: inherit; }
button, a, summary, label { -webkit-tap-highlight-color: transparent; }
button, summary { cursor: pointer; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.site-wrapper {
  position: relative;
  z-index: 2;
  min-height: calc(100vh - 2rem);
  background: var(--paper);
  overflow: clip;
}

/* Header — direct translation of wanhe.me's hard grid */
.site-header {
  position: relative;
  z-index: 20;
  display: grid;
  grid-template-columns: 6rem minmax(12rem, 1.35fr) repeat(4, minmax(7rem, .72fr));
  min-height: 6rem;
  border-bottom: 1px solid var(--ink);
  background: var(--paper);
}
.header-logo,
.header-console,
.header-link,
.header-reset {
  min-width: 0;
  border: 0;
  border-right: 1px solid var(--ink);
  background: transparent;
}
.header-logo {
  display: grid;
  place-items: center;
  padding: 1.5rem;
}
.header-logo img { width: 3rem; height: 3rem; }
.header-console {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  overflow: hidden;
}
.header-console strong {
  font-family: var(--editorial);
  font-size: 1.15rem;
  font-weight: 400;
}
.header-console small {
  font-size: .48rem;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.header-link,
.header-reset {
  display: grid;
  place-items: center;
  padding: .75rem;
  font-size: .65rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  transition: background .2s ease, color .2s ease;
}
.header-link:hover,
.header-link:focus-visible,
.header-reset:hover,
.header-reset:focus-visible {
  background: var(--ink);
  color: var(--paper);
}
.header-reset { border-right: 0; }

/* Hero — line field, code tracks, oversized type */
.wanhe-hero { position: relative; overflow: hidden; }
.wave-field {
  --wave-x: -.5rem;
  --wave-y: 50%;
  position: relative;
  height: clamp(23rem, 37vw, 31rem);
  min-height: 42vh;
  border-bottom: 1px solid var(--ink);
  overflow: hidden;
  background: var(--paper);
  contain: layout paint;
  touch-action: none;
  transform-origin: 50% 100%;
}
.wave-field::before {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  width: .5rem;
  height: .5rem;
  border-radius: 50%;
  background: var(--ink);
  opacity: 0;
  transform: translate3d(calc(var(--wave-x) - 50%), calc(var(--wave-y) - 50%), 0);
  transition: opacity .2s ease;
  will-change: transform;
  pointer-events: none;
  content: "";
}
.wave-field.is-interactive::before { opacity: 1; }
#hero-waves { display: block; width: 100%; height: 100%; pointer-events: none; }
#hero-waves path {
  fill: none;
  stroke: var(--ink);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}
.data-separator {
  display: flex;
  align-items: center;
  gap: 1rem;
  height: 2.15rem;
  padding: 0 1rem;
  border-bottom: 1px solid var(--ink);
  overflow: hidden;
  white-space: nowrap;
  font-size: .42rem;
  line-height: 1;
  letter-spacing: .035em;
}
.data-separator span:nth-child(even) { letter-spacing: -.02em; }
.hero-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1rem, 3vw, 3rem);
  padding: 1.7rem 1rem 1.4rem;
  border-bottom: 1px solid var(--ink);
  overflow: hidden;
  font-family: var(--display);
  font-size: min(14.25vw, 13rem);
  font-weight: 400;
  line-height: .74;
  letter-spacing: -.035em;
  text-transform: uppercase;
}
.hero-word { display: block; transform-origin: 50% 100%; }
.hero-star {
  flex: 0 0 auto;
  width: clamp(2rem, 4vw, 4.5rem);
  aspect-ratio: 1;
  background: var(--ink);
  clip-path: polygon(50% 0, 57% 43%, 100% 50%, 57% 57%, 50% 100%, 43% 57%, 0 50%, 43% 43%);
}

/* Workbench */
.workbench {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(20rem, 24rem);
  border-bottom: 1px solid var(--ink);
}
.creation-form { min-width: 0; border-right: 1px solid var(--ink); }
.grid-cell, .spec-cell, .submit-cell, .connection-panel { background: var(--paper); }
.cell-heading,
.gallery-heading,
.output-heading,
.connection-panel > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.35rem;
  padding: .85rem 1rem;
  border-bottom: 1px solid var(--ink);
  font-size: .58rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.cell-heading i,
.spec-cell legend i,
.output-heading i,
.gallery-heading i,
.connection-panel summary i {
  margin-right: .55rem;
  font-style: normal;
}
.prompt-label { display: block; padding: 1.25rem 1rem 1rem; }
.prompt-label > span {
  display: block;
  margin-bottom: .85rem;
  font-family: var(--cjk);
  font-size: clamp(1.8rem, 3vw, 3.35rem);
  font-weight: 800;
  letter-spacing: -.045em;
  line-height: 1;
}
#prompt {
  display: block;
  width: 100%;
  min-height: 14rem;
  resize: vertical;
  padding: 0;
  border: 0;
  outline: 0;
  background: transparent;
  font-family: var(--cjk-user);
  font-size: clamp(1.25rem, 2vw, 2rem);
  line-height: 1.55;
}
#prompt::placeholder { color: rgba(22, 0, 0, .34); }

.spec-grid { display: grid; grid-template-columns: 1fr 1fr; }
.spec-cell {
  min-width: 0;
  margin: 0;
  padding: 1rem;
  border: 0;
  border-top: 1px solid var(--ink);
  border-right: 1px solid var(--ink);
}
.spec-cell:nth-child(even) { border-right: 0; }
.spec-cell legend {
  float: left;
  width: 100%;
  margin: 0 0 .85rem;
  padding: 0;
  font-size: .58rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.spec-cell legend + * { clear: both; }
.choice-grid { display: grid; gap: 0; border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.quality-options { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.resolution-options { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.choice-card,
.frame-option {
  position: relative;
  display: grid;
  place-items: center;
  min-width: 0;
  min-height: 5.4rem;
  padding: .65rem .3rem;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  text-align: center;
  transition: background .18s ease, color .18s ease;
}
.choice-card input,
.frame-option input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}
.choice-card b,
.frame-option b {
  font-family: var(--cjk);
  font-size: 1.05rem;
  font-weight: 400;
}
.choice-card small,
.frame-option small {
  font-size: .43rem;
  letter-spacing: .04em;
}
.choice-card:has(input:checked),
.frame-option:has(input:checked) { background: var(--ink); color: var(--paper); }
.choice-card:has(input:focus-visible),
.frame-option:has(input:focus-visible) { outline: 2px solid var(--ink); outline-offset: 2px; z-index: 2; }

.aspect-cell { grid-column: 1 / 2; }
.frame-options { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.frame-option { min-height: 7.15rem; gap: .35rem; }
.frame-option small { font-family: var(--cjk); font-size: .55rem; letter-spacing: .01em; }
.frame-icon {
  display: block;
  width: 1.65rem;
  border: 1px solid currentColor;
}
.frame-square { aspect-ratio: 1; }
.frame-landscape-32 { aspect-ratio: 3 / 2; }
.frame-landscape-169 { aspect-ratio: 16 / 9; }
.frame-portrait-23 { width: 1.2rem; aspect-ratio: 2 / 3; }
.frame-portrait-916 { width: .95rem; aspect-ratio: 9 / 16; }

.output-cell { border-right: 0; }
.output-heading { min-height: auto; padding: 0 0 .85rem; }
.output-heading output { font-size: .62rem; letter-spacing: .03em; }
.output-fields { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.field { display: block; min-width: 0; }
.field > span:first-child {
  display: block;
  padding: .6rem .7rem;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  font-size: .5rem;
  letter-spacing: .08em;
}
.field input,
.field select {
  width: 100%;
  min-height: 3rem;
  padding: .7rem;
  border: 0;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  border-radius: 0;
  outline: 0;
  background: transparent;
  font-size: .72rem;
}
.field input:focus,
.field select:focus { box-shadow: inset 0 0 0 2px var(--ink); }

.submit-cell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(13rem, 19rem);
  border-top: 1px solid var(--ink);
}
.request-status {
  display: flex;
  align-items: center;
  min-height: 5rem;
  margin: 0;
  padding: 1rem;
  font-family: var(--cjk);
  font-size: 1rem;
}
.request-status.success::before,
.request-status.error::before { margin-right: .65rem; content: "■"; font-size: .55rem; }
.generate-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 5rem;
  padding: 1rem 1.25rem;
  border: 0;
  border-left: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font-size: .7rem;
  letter-spacing: .1em;
  transition: background .2s ease, color .2s ease;
}
.generate-button:hover:not(:disabled),
.generate-button:focus-visible { background: var(--paper); color: var(--ink); }
.generate-button:disabled { opacity: .55; cursor: wait; }

/* Connection occupies the right grid column, like wanhe.me's header console */
.connection-panel { min-width: 0; }
.connection-panel > summary { list-style: none; }
.connection-panel > summary::-webkit-details-marker { display: none; }
.connection-panel > summary small {
  margin-left: auto;
  color: var(--ink-soft);
  font-family: var(--cjk);
  font-size: .75rem;
  letter-spacing: 0;
  text-transform: none;
}
.connection-body { padding: 1rem; }
.connection-body > .field { margin-bottom: 1rem; border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.connection-body .field > span:first-child,
.connection-body .field input { border-right: 1px solid var(--ink); }
.key-input-wrap { position: relative; display: block; }
.key-input-wrap input { padding-right: 4.3rem; }
.reveal-button {
  position: absolute;
  top: 0;
  right: 0;
  height: calc(100% - 1px);
  width: 4rem;
  border: 0;
  border-left: 1px solid var(--ink);
  background: transparent;
  font-size: .52rem;
}
.connection-foot { display: grid; grid-template-columns: 7rem 1fr; border: 1px solid var(--ink); }
.test-button {
  border: 0;
  border-right: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font-size: .55rem;
  letter-spacing: .08em;
}
.connection-foot p {
  margin: 0;
  padding: .75rem;
  font-family: var(--cjk);
  font-size: .75rem;
  line-height: 1.45;
}

/* Session — empty state is pure type and space */
.gallery-section { border-bottom: 1px solid var(--ink); }
.gallery { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); }
.empty-state {
  grid-column: 1 / -1;
  display: flex;
  min-height: 18rem;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: clamp(2rem, 7vw, 7rem);
}
.empty-state b {
  font-family: var(--cjk);
  font-size: clamp(2.6rem, 6vw, 6.5rem);
  font-weight: 800;
  line-height: .98;
  letter-spacing: -.07em;
}
.empty-state p {
  margin: 1rem 0 0;
  font-family: var(--cjk);
  font-size: .8rem;
  letter-spacing: .01em;
}
.image-card {
  grid-column: span 6;
  min-width: 0;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.image-card:nth-child(even) { border-right: 0; }
.image-card > img { width: 100%; aspect-ratio: 1; object-fit: contain; background: rgba(22, 0, 0, .04); }
.image-info { border-top: 1px solid var(--ink); }
.image-prompt { min-height: 5rem; margin: 0; padding: 1rem; font-family: var(--cjk-user); font-size: 1rem; line-height: 1.5; }
.image-actions { display: flex; align-items: center; border-top: 1px solid var(--ink); }
.image-actions span { margin-right: auto; padding: .7rem; font-size: .5rem; }
.image-actions a,
.image-actions button {
  padding: .7rem 1rem;
  border: 0;
  border-left: 1px solid var(--ink);
  background: transparent;
  font-size: .55rem;
}
.image-actions a:hover,
.image-actions button:hover { background: var(--ink); color: var(--paper); }

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 7rem;
  padding-right: 1rem;
}
.site-footer a { display: flex; align-items: center; gap: 1rem; font-family: var(--editorial); font-size: 1.1rem; }
.site-footer img { width: 3rem; height: 3rem; margin: 1.5rem; }
.site-footer span { font-size: .5rem; letter-spacing: .07em; }

/* Exact wanhe.me intro geometry; WAAPI supplies the timeline */
.site-intro {
  position: fixed;
  inset: 0;
  z-index: 50;
  width: 100%;
  height: 100%;
  background: var(--paper);
  pointer-events: all;
}
.intro-logo {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 3rem;
  height: 3rem;
  transform: translate3d(-50%, -50%, 0);
}
.intro-path { position: absolute; display: block; background: var(--ink); }
.intro-path--v { top: 0; width: 14.2857%; height: 100%; transform: scaleY(0); transform-origin: 50% 100%; }
.intro-path--v1 { left: 0; }
.intro-path--v2 { left: 21.29%; }
.intro-path--v3 { left: 42.59%; }
.intro-path--v4 { left: 64.5%; }
.intro-path--v5 { right: 0; }
.intro-path--h { width: 7.5%; height: 6%; transform: scaleX(0); }
.intro-path--h1 { bottom: 0; left: 14.29%; transform-origin: 0 0; }
.intro-path--h2 { bottom: 0; left: 32%; transform-origin: 0 0; }
.intro-path--h3 { top: 47%; left: 77%; width: 10%; transform-origin: 0 0; }
.intro-border { --intro-border-width: 1rem; position: absolute; display: block; background: var(--ink); }
.intro-border--top { top: 0; left: 0; width: 100%; height: var(--intro-border-width); transform: scaleY(0); transform-origin: 50% 0; }
.intro-border--left,
.intro-border--right { top: 0; width: var(--intro-border-width); height: 100%; }
.intro-border--left { left: 0; transform: scaleX(0); transform-origin: 0 50%; }
.intro-border--right { right: 0; transform: scaleX(0); transform-origin: 100% 50%; }
.site-mount {
  position: fixed;
  inset: 0;
  z-index: 40;
  border: 1rem solid var(--ink);
  opacity: 0;
  pointer-events: none;
}

@media (max-width: 1050px) {
  .site-header { grid-template-columns: 6rem minmax(10rem, 1fr) repeat(4, minmax(5.5rem, .6fr)); }
  .workbench { grid-template-columns: minmax(0, 1fr) 20rem; }
  .quality-options { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-title { font-size: 13.5vw; }
}

@media (max-width: 760px) {
  body { padding: .5rem; }
  .site-wrapper { min-height: calc(100vh - 1rem); }
  .site-header {
    grid-template-columns: 4rem minmax(0, 1fr) 4.9rem 4.9rem;
    min-height: 4rem;
  }
  .header-logo { padding: 1rem; }
  .header-logo img { width: 1.875rem; height: 1.875rem; }
  .header-console { padding: .65rem .75rem; }
  .header-console strong { font-size: .9rem; }
  .header-console small { font-size: .39rem; }
  .header-link[href="#create"],
  .header-link[href="#session"] { display: none; }
  .header-link, .header-reset { font-size: .48rem; }
  .wave-field { height: 44vh; min-height: 19rem; }
  .data-separator { height: 1.75rem; padding: 0 .65rem; gap: .65rem; font-size: .34rem; }
  .hero-title {
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 0;
    padding: 1rem .75rem .8rem;
    font-size: calc(29vw - .5rem);
    line-height: .82;
  }
  .hero-word { flex: 0 0 auto; }
  .hero-word:last-child { width: 100%; margin-top: .035em; }
  .hero-star { width: 1.6rem; margin-left: auto; margin-right: .5rem; }
  .workbench { grid-template-columns: 1fr; }
  .creation-form { border-right: 0; }
  .prompt-label > span { font-size: 2rem; }
  #prompt { min-height: 12rem; font-size: 1.25rem; }
  .spec-grid { grid-template-columns: 1fr; }
  .spec-cell, .spec-cell:nth-child(even) { border-right: 0; }
  .aspect-cell { grid-column: auto; }
  .frame-option { min-height: 6.3rem; padding-inline: .12rem; }
  .frame-option b { font-size: .78rem; }
  .frame-option small { font-size: .38rem; }
  .frame-icon { width: 1.35rem; }
  .frame-portrait-23 { width: .95rem; }
  .frame-portrait-916 { width: .75rem; }
  .submit-cell { grid-template-columns: 1fr; }
  .generate-button { border-top: 1px solid var(--ink); border-left: 0; }
  .connection-panel { border-top: 1px solid var(--ink); }
  .connection-foot { grid-template-columns: 6rem 1fr; }
  .image-card { grid-column: 1 / -1; border-right: 0; }
  .empty-state { min-height: 14rem; padding: 2rem 1rem; }
  .empty-state b { font-size: 3.35rem; }
  .site-footer { min-height: 5rem; }
  .site-footer img { width: 2rem; height: 2rem; margin: 1rem; }
  .site-footer span { display: none; }
  .intro-logo { width: 1.875rem; height: 1.875rem; }
  .intro-border { --intro-border-width: .5rem; }
  .site-mount { border-width: .5rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}