.papers-page {
  background: var(--paper);
  color: var(--on-paper);
}

.papers-shell {
  width: min(100%, var(--max-width));
  margin-inline: auto;
  padding: clamp(var(--p-space-12), 7vw, var(--p-space-24)) var(--pad) clamp(var(--p-space-20), 10vw, 140px);
}

.papers-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(300px, 0.88fr);
  gap: clamp(var(--p-space-8), 6vw, var(--p-space-20));
  align-items: end;
  padding-bottom: var(--p-space-8);
  border-bottom: var(--p-line-heavy, 4px) solid var(--ink);
}

.papers-intro .section-code {
  margin: 0 0 var(--p-space-4);
  color: var(--red-dark);
  font: 600 12px/1.35 var(--font-mono);
  letter-spacing: 0.1em;
}

.papers-intro h1 {
  margin: 0;
  display: flex;
  flex-direction: column;
  color: var(--ink);
  font-weight: 500;
  line-height: 0.82;
}

.papers-intro h1 [lang="ja"] {
  font-size: clamp(44px, 7vw, 94px);
  letter-spacing: 0.04em;
}

.papers-intro h1 [lang="en"] {
  margin-top: var(--p-space-4);
  font: 400 clamp(58px, 10vw, 142px)/0.78 var(--font-display);
  letter-spacing: 0.012em;
}

.papers-intro-copy {
  padding-left: var(--p-space-6);
  border-left: 1px solid var(--black-line);
}

.papers-intro-copy p {
  margin: 0;
}

.papers-intro-copy > p:last-child {
  margin-top: var(--p-space-5);
  color: var(--on-paper-muted);
  font-size: 15px;
  line-height: 1.55;
}

.papers-intro-copy > p:last-child span {
  display: block;
}

.papers-intro-copy > p:last-child [lang="en"] {
  margin-top: var(--p-space-2);
  font-size: 13px;
}

.papers-decree {
  font: 400 clamp(32px, 4.5vw, 66px)/0.94 var(--font-display);
  letter-spacing: 0.02em;
}

.papers-workstation {
  margin-top: clamp(var(--p-space-10), 7vw, var(--p-space-20));
  display: grid;
  grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
  align-items: start;
  border: 1px solid var(--ink);
  background: var(--warm-white);
  box-shadow: 10px 12px 0 rgb(9 11 15 / 18%);
}

.papers-controls {
  min-width: 0;
  padding: clamp(var(--p-space-6), 3vw, var(--p-space-10));
  border-right: 1px solid var(--white-line);
  background: var(--navy);
  color: var(--on-dark);
}

.papers-controls-header {
  padding-bottom: var(--p-space-6);
  border-bottom: 1px solid var(--white-line);
}

.papers-window,
.papers-controls-header h2,
.papers-types > p,
.papers-form label,
.papers-hint,
.papers-registry,
.papers-status,
.papers-privacy,
.papers-preview-header,
.papers-proofline {
  margin: 0;
}

.papers-window {
  color: #d8b779;
  font: 600 11px/1.4 var(--font-mono);
  letter-spacing: 0.08em;
}

.papers-controls-header h2 {
  margin-top: var(--p-space-3);
  font-weight: 500;
  line-height: 1.1;
}

.papers-controls-header h2 span {
  display: block;
}

.papers-controls-header h2 [lang="ja"] {
  font-size: 24px;
}

.papers-controls-header h2 [lang="en"] {
  margin-top: var(--p-space-2);
  font: 400 38px/0.9 var(--font-display);
  letter-spacing: 0.025em;
}

.papers-form {
  margin-top: var(--p-space-8);
}

.papers-form label,
.papers-types > p {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--p-space-3);
  font-size: 13px;
}

.papers-form label [lang="en"],
.papers-types > p [lang="en"] {
  color: var(--on-dark-muted);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.papers-hint {
  margin-top: var(--p-space-2);
  color: var(--on-dark-muted);
  font: 400 11px/1.45 var(--font-mono);
}

.papers-input-frame {
  height: 52px;
  margin-top: var(--p-space-3);
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  border: 2px solid var(--warm-white);
  background: var(--warm-white);
  color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--black-line);
}

.papers-input-frame > span {
  display: grid;
  place-items: center;
  border-right: 1px solid var(--black-line);
  color: var(--red-dark);
  font: 600 17px var(--font-mono);
}

.papers-input-frame input {
  min-width: 0;
  border: 0;
  border-radius: 0;
  padding: 0 var(--p-space-3);
  background: transparent;
  color: var(--ink);
  font: 600 16px var(--font-mono);
  outline: 0;
}

.papers-input-frame:focus-within {
  outline: 2px solid var(--red);
  outline-offset: 3px;
}

.papers-types {
  margin-top: var(--p-space-8);
}

.papers-tablist {
  margin-top: var(--p-space-3);
  display: grid;
  gap: 1px;
  background: var(--white-line);
  border: 1px solid var(--white-line);
}

.papers-tablist button {
  min-height: 56px;
  padding: var(--p-space-2) var(--p-space-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--p-space-3);
  border: 0;
  border-radius: 0;
  background: var(--navy);
  color: var(--on-dark-muted);
  cursor: pointer;
  text-align: left;
}

.papers-tablist button span {
  font-size: 14px;
}

.papers-tablist button small {
  color: inherit;
  font: 600 10px/1.2 var(--font-mono);
  letter-spacing: 0.05em;
  text-align: right;
}

.papers-tablist button[aria-selected="true"] {
  background: var(--red);
  color: white;
  box-shadow: inset 4px 0 0 white;
}

.papers-tablist button:hover {
  background: #0d2a6c;
  color: white;
}

.papers-tablist button[aria-selected="true"]:hover {
  background: var(--red);
}

.papers-registry {
  margin-top: var(--p-space-8);
  border-top: 1px solid var(--white-line);
  font: 400 10px/1.4 var(--font-mono);
}

.papers-registry div {
  padding: var(--p-space-3) 0;
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: var(--p-space-3);
  border-bottom: 1px solid var(--white-line-soft);
}

.papers-registry dt {
  color: var(--on-dark-muted);
}

.papers-registry dd {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--warm-white);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.papers-actions {
  margin-top: var(--p-space-8);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--p-space-2);
}

.papers-export,
.papers-share {
  min-height: 52px;
  padding: var(--p-space-2) var(--p-space-3);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--warm-white);
  border-radius: 0;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
}

.papers-export {
  background: var(--red);
  color: white;
}

.papers-share {
  background: transparent;
  color: var(--warm-white);
}

.papers-export span,
.papers-share span {
  font-size: 12px;
}

.papers-export small,
.papers-share small {
  margin-top: var(--p-space-1);
  font: 600 9px/1.2 var(--font-mono);
  letter-spacing: 0.04em;
}

.papers-export:hover {
  background: #da2634;
}

.papers-share:hover {
  background: rgb(255 255 255 / 10%);
}

.papers-status {
  min-height: 38px;
  margin-top: var(--p-space-5);
  padding: var(--p-space-3) 0 0;
  border-top: 1px solid var(--white-line-soft);
  color: #d8b779;
  font: 600 10px/1.45 var(--font-mono);
}

.papers-privacy {
  margin-top: var(--p-space-5);
  color: var(--on-dark-muted);
  font-size: 12px;
  line-height: 1.55;
}

.papers-privacy span {
  display: block;
}

.papers-privacy [lang="en"] {
  margin-top: var(--p-space-2);
  font-size: 10px;
}

.papers-preview {
  min-width: 0;
  padding: clamp(var(--p-space-5), 3.5vw, var(--p-space-12));
  background-color: #cbc6bc;
  background-image:
    linear-gradient(rgb(33 29 26 / 7%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(33 29 26 / 7%) 1px, transparent 1px);
  background-size: 24px 24px;
}

.papers-preview-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--p-space-5);
  padding-bottom: var(--p-space-4);
  border-bottom: 1px solid rgb(33 29 26 / 45%);
  color: var(--ink);
}

.papers-preview-header div span,
.papers-preview-header div small,
.papers-preview-header p span {
  display: block;
}

.papers-preview-header div span {
  font-size: 16px;
}

.papers-preview-header div small,
.papers-preview-header p {
  font: 600 10px/1.4 var(--font-mono);
  letter-spacing: 0.06em;
}

.papers-preview-header div small {
  margin-top: var(--p-space-1);
}

.papers-preview-header p {
  text-align: right;
}

.papers-canvas-stage {
  min-height: 360px;
  margin-top: clamp(var(--p-space-6), 3vw, var(--p-space-10));
  display: grid;
  place-items: center;
}

.papers-canvas-stage > * {
  grid-area: 1 / 1;
}

.papers-canvas-loading {
  width: min(100%, 360px);
  margin: 0;
  padding: var(--p-space-4);
  border: 1px solid var(--ink);
  background: var(--warm-white);
  color: var(--ink);
  font: 600 11px/1.5 var(--font-mono);
  text-align: center;
  box-shadow: 6px 6px 0 rgb(9 11 15 / 20%);
}

.papers-canvas-loading[hidden] {
  display: none;
}

.papers-canvas-stage canvas {
  display: block;
  width: min(100%, 720px);
  height: auto;
  background: #f1eee7;
  box-shadow: 10px 14px 0 rgb(9 11 15 / 24%);
  outline: 1px solid rgb(0 0 0 / 15%);
  outline-offset: -1px;
}

.papers-canvas-stage canvas[data-orientation="landscape"] {
  width: min(100%, 940px);
}

.papers-proofline {
  margin-top: var(--p-space-6);
  display: flex;
  justify-content: space-between;
  gap: var(--p-space-4);
  color: var(--ink);
  font: 600 9px/1.4 var(--font-mono);
  letter-spacing: 0.05em;
}

@media (max-width: 980px) {
  .papers-intro {
    grid-template-columns: 1fr;
    gap: var(--p-space-8);
  }

  .papers-intro-copy {
    max-width: 680px;
  }

  .papers-workstation {
    grid-template-columns: 1fr;
  }

  .papers-controls {
    border-right: 0;
    border-bottom: 1px solid var(--ink);
  }

  .papers-tablist {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .papers-tablist button {
    min-height: 72px;
    flex-direction: column;
    justify-content: center;
    text-align: center;
  }

  .papers-tablist button small {
    text-align: center;
  }
}

@media (max-width: 560px) {
  .papers-shell {
    padding-top: var(--p-space-10);
    padding-right: var(--p-space-4);
    padding-left: var(--p-space-4);
  }

  .papers-intro h1 [lang="en"] {
    font-size: clamp(58px, 22vw, 94px);
  }

  .papers-intro-copy {
    padding-left: var(--p-space-4);
  }

  .papers-workstation {
    margin-top: var(--p-space-10);
    box-shadow: 6px 8px 0 rgb(9 11 15 / 18%);
  }

  .papers-controls,
  .papers-preview {
    padding: var(--p-space-5);
  }

  .papers-tablist button {
    min-width: 0;
    padding-inline: var(--p-space-1);
  }

  .papers-tablist button span {
    font-size: 12px;
  }

  .papers-tablist button small {
    font-size: 8px;
    overflow-wrap: anywhere;
  }

  .papers-actions {
    grid-template-columns: 1fr;
  }

  .papers-preview-header {
    align-items: start;
  }

  .papers-canvas-stage {
    min-height: 240px;
  }

  .papers-canvas-stage canvas {
    box-shadow: 5px 7px 0 rgb(9 11 15 / 22%);
  }

  .papers-proofline {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  .papers-page *,
  .papers-page *::before,
  .papers-page *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

@media print {
  .papers-page .network-masthead,
  .papers-page .papers-intro,
  .papers-page .papers-controls,
  .papers-page .papers-preview-header,
  .papers-page .papers-proofline,
  .papers-page .site-custodian,
  .papers-page .network-footer,
  .papers-page .mobile-tabbar {
    display: none !important;
  }

  .papers-shell,
  .papers-preview,
  .papers-canvas-stage {
    margin: 0;
    padding: 0;
    border: 0;
    background: white;
    box-shadow: none;
  }

  .papers-workstation {
    display: block;
    margin: 0;
    border: 0;
    box-shadow: none;
  }

  .papers-canvas-stage canvas,
  .papers-canvas-stage canvas[data-orientation="landscape"] {
    width: 100%;
    box-shadow: none;
  }
}