:root {
  --ink: #17211f;
  --ink-soft: #45514e;
  --paper: #f3f2ec;
  --paper-deep: #e9e7df;
  --white: #fffefa;
  --line: #d7d7cf;
  --green: #1fad68;
  --green-soft: #d8f3e4;
  --red: #e65347;
  --red-soft: #fde0dd;
  --violet: #7958d7;
  --violet-soft: #e9e2fb;
  --orange: #ef805d;
  --amber: #f2a114;
  --amber-soft: #fbebc9;
  --shadow: 0 20px 60px rgba(31, 39, 37, 0.1);
  --radius: 20px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 12%, rgba(235, 127, 91, 0.08), transparent 28rem),
    var(--paper);
  font-family: Inter, "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", Meiryo, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

button,
select,
input {
  font: inherit;
}

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

button {
  color: inherit;
}

.site-header {
  width: min(1440px, calc(100% - 56px));
  height: 84px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(23, 33, 31, 0.11);
}

.brand {
  color: var(--ink);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  letter-spacing: 0.13em;
  font-weight: 650;
}

.brand b {
  color: var(--orange);
  font-weight: 850;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: var(--ink);
  box-shadow: 0 6px 16px rgba(23, 33, 31, 0.18);
}

.brand-mark svg {
  width: 22px;
  fill: none;
  stroke: white;
  stroke-width: 1.7;
  stroke-linejoin: round;
  stroke-linecap: round;
}

.header-note {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 650;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(31, 173, 104, 0.13);
}

main {
  min-height: calc(100vh - 160px);
}

.hero {
  width: min(1320px, calc(100% - 56px));
  margin: 0 auto;
  padding: 72px 0 92px;
  display: grid;
  grid-template-columns: minmax(420px, 0.86fr) minmax(620px, 1.14fr);
  gap: clamp(54px, 6vw, 90px);
  align-items: center;
}

.eyebrow,
.step-label {
  margin: 0 0 16px;
  color: var(--orange);
  font-size: 11px;
  line-height: 1;
  font-weight: 850;
  letter-spacing: 0.18em;
}

.hero h1 {
  margin: 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", Georgia, serif;
  font-size: clamp(48px, 4.4vw, 64px);
  line-height: 1.16;
  letter-spacing: -0.045em;
  font-weight: 600;
}

.hero-line {
  white-space: nowrap;
}

.hero h1 em {
  color: var(--orange);
  font-style: normal;
  position: relative;
  white-space: nowrap;
}

.hero h1 em::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: -2%;
  right: -4%;
  bottom: 4%;
  height: 13px;
  background: rgba(239, 128, 93, 0.14);
  transform: rotate(-1.5deg);
}

.lead {
  max-width: 540px;
  margin: 30px 0 0;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 2;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 21px;
  align-items: center;
}

.hero-legend {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.legend span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 650;
}

.swatch {
  width: 23px;
  height: 9px;
  border-radius: 2px;
}

.swatch.added { background: rgba(31, 173, 104, 0.65); }
.swatch.deleted { background: rgba(230, 83, 71, 0.62); }
.swatch.visual {
  height: 11px;
  background: rgba(121, 88, 215, 0.13);
  border: 2px dashed var(--violet);
}
.swatch.style { background: rgba(242, 161, 20, 0.65); }

.compare-panel {
  position: relative;
  padding: clamp(26px, 3vw, 40px);
  border: 1px solid rgba(23, 33, 31, 0.08);
  border-radius: 26px;
  background: rgba(255, 254, 250, 0.92);
  box-shadow: var(--shadow);
}

.compare-panel::before {
  content: "";
  position: absolute;
  inset: 9px -9px -9px 9px;
  z-index: -1;
  border: 1px solid rgba(23, 33, 31, 0.08);
  border-radius: 26px;
}

.panel-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 28px;
}

.panel-heading h2,
.result-header h2 {
  margin: 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", Georgia, serif;
  font-size: 25px;
  font-weight: 650;
}

.panel-heading .step-label {
  margin-bottom: 9px;
}

.local-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 9px;
  border-radius: 100px;
  color: #168551;
  background: var(--green-soft);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.1em;
}

.local-badge svg {
  width: 13px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.upload-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 30px minmax(0, 1fr);
  gap: 13px;
  align-items: center;
}

.upload-label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px 2px;
  font-size: 12px;
  font-weight: 750;
}

.version {
  width: 23px;
  height: 23px;
  display: inline-grid;
  place-items: center;
  border-radius: 7px;
  font-size: 11px;
}

.version.old {
  color: #b23931;
  background: var(--red-soft);
}

.version.new {
  color: #137648;
  background: var(--green-soft);
}

.direction-arrow {
  padding-top: 29px;
  color: #9ba19d;
}

.direction-arrow svg {
  width: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.dropzone {
  min-height: 187px;
  padding: 22px 15px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: 1.5px dashed #bec3be;
  border-radius: 15px;
  background: #faf9f5;
  text-align: center;
  transition: 180ms ease;
  outline: none;
}

.dropzone:hover,
.dropzone:focus-visible,
.dropzone.drag-over {
  border-color: var(--orange);
  background: #fff8f4;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(49, 57, 54, 0.07);
}

.dropzone.has-file {
  border-style: solid;
  border-color: rgba(31, 173, 104, 0.48);
  background: #f5fbf7;
}

.dropzone input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.upload-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  margin-bottom: 13px;
  border: 1px solid #daddd8;
  border-radius: 12px;
  color: #68716e;
  background: var(--white);
}

.upload-icon svg {
  width: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.has-file .upload-icon {
  color: var(--green);
  border-color: rgba(31, 173, 104, 0.25);
}

.drop-title {
  font-size: 13px;
  font-weight: 780;
}

.drop-subtitle {
  margin-top: 6px;
  color: #7c8581;
  font-size: 10px;
}

.file-selected {
  width: 100%;
  margin-top: 12px;
}

.file-name {
  display: block;
  overflow: hidden;
  color: var(--ink);
  font-size: 12px;
  font-weight: 750;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-size {
  display: block;
  margin-top: 4px;
  color: #71807b;
  font-size: 10px;
}

.advanced-options {
  margin-top: 20px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.advanced-options summary {
  padding: 14px 2px;
  cursor: pointer;
  list-style: none;
  font-size: 11px;
  font-weight: 750;
}

.advanced-options summary::-webkit-details-marker {
  display: none;
}

.advanced-options summary::after {
  content: "+";
  float: right;
  color: var(--ink-soft);
  font-size: 15px;
  font-weight: 400;
}

.advanced-options[open] summary::after {
  content: "−";
}

.advanced-options summary span {
  margin-left: 7px;
  color: #8a928f;
  font-size: 10px;
  font-weight: 450;
}

.option-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 0 0 15px;
}

.option-grid label > span {
  display: block;
  margin-bottom: 6px;
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 700;
}

.option-grid select {
  width: 100%;
  height: 40px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--ink);
  background: var(--white);
  font-size: 11px;
  outline: none;
}

.option-grid select:focus {
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(239, 128, 93, 0.12);
}

.compare-button {
  width: 100%;
  height: 55px;
  margin-top: 23px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  cursor: pointer;
  border: 0;
  border-radius: 12px;
  color: white;
  background: var(--ink);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.03em;
  box-shadow: 0 10px 22px rgba(23, 33, 31, 0.17);
  transition: 160ms ease;
}

.compare-button:hover:not(:disabled) {
  background: #26322f;
  transform: translateY(-1px);
  box-shadow: 0 13px 26px rgba(23, 33, 31, 0.2);
}

.compare-button:disabled {
  cursor: not-allowed;
  opacity: 0.35;
  box-shadow: none;
}

.compare-button svg {
  width: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.privacy-note {
  margin: 14px 0 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  color: #7b8481;
  font-size: 9px;
  line-height: 1.6;
}

.privacy-note svg {
  flex: 0 0 auto;
  width: 13px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
}

.form-error {
  margin-top: 16px;
  padding: 11px 13px;
  border: 1px solid rgba(230, 83, 71, 0.3);
  border-radius: 9px;
  color: #a4332d;
  background: var(--red-soft);
  font-size: 11px;
  line-height: 1.6;
}

.result-section {
  width: min(1440px, calc(100% - 56px));
  margin: 0 auto 90px;
  padding-top: 74px;
  border-top: 1px solid var(--line);
}

.result-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 25px;
}

.result-header .eyebrow {
  margin-bottom: 10px;
  color: var(--green);
}

.result-header h2 {
  font-size: 38px;
}

.result-filenames {
  max-width: 780px;
  margin: 10px 0 0;
  overflow: hidden;
  color: var(--ink-soft);
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.secondary-button {
  height: 43px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  border: 1px solid #c9cbc6;
  border-radius: 10px;
  background: transparent;
  font-size: 11px;
  font-weight: 750;
}

.secondary-button:hover {
  background: var(--white);
}

.secondary-button svg {
  width: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
}

.summary-grid {
  margin-top: 35px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: var(--line);
  overflow: hidden;
}

.summary-card {
  min-height: 116px;
  padding: 24px 27px;
  background: rgba(255, 254, 250, 0.68);
}

.summary-card .summary-label {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 750;
}

.summary-card .summary-dot {
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--ink-soft);
}

.summary-card .summary-value {
  margin-top: 10px;
  display: flex;
  align-items: baseline;
  gap: 5px;
  font-family: Georgia, serif;
  font-size: 34px;
  line-height: 1;
}

.summary-card .summary-value small {
  color: var(--ink-soft);
  font-family: inherit;
  font-size: 11px;
}

.summary-card.changed .summary-dot { background: var(--orange); }
.summary-card.added .summary-dot { background: var(--green); }
.summary-card.added .summary-value { color: #14814e; }
.summary-card.deleted .summary-dot { background: var(--red); }
.summary-card.deleted .summary-value { color: #ba3c34; }
.summary-card.visual .summary-dot { background: var(--violet); }
.summary-card.visual .summary-value { color: #6241bb; }
.summary-card.style .summary-dot { background: var(--amber); }
.summary-card.style .summary-value { color: #a06c0b; }

.download-panel {
  margin-top: 28px;
  padding: 22px 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 25px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--ink);
  color: white;
}

.download-copy,
.viewer-heading > div:first-child {
  display: flex;
  align-items: center;
  gap: 16px;
}

.section-number {
  width: 37px;
  height: 37px;
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 50%;
  color: var(--orange);
  font-family: Georgia, serif;
  font-size: 12px;
}

.download-panel h3,
.viewer-heading h3 {
  margin: 0;
  font-size: 14px;
}

.download-panel p,
.viewer-heading p {
  margin: 5px 0 0;
  color: rgba(255, 255, 255, 0.58);
  font-size: 10px;
}

.download-actions {
  display: flex;
  gap: 8px;
}

.download-button {
  min-height: 42px;
  padding: 0 13px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 9px;
  color: white;
  background: rgba(255, 255, 255, 0.07);
  text-decoration: none;
  font-size: 10px;
  font-weight: 750;
  transition: 150ms ease;
}

.download-button:hover {
  border-color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.14);
}

.download-button.primary {
  border-color: var(--orange);
  background: var(--orange);
}

.download-button.primary:hover {
  background: #f18e70;
}

.download-button svg {
  width: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.web-pdf-preview {
  margin-top: 28px;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: rgba(255, 254, 250, 0.76);
  overflow: hidden;
  box-shadow: 0 12px 36px rgba(31, 38, 36, 0.06);
}

.web-preview-header {
  min-height: 77px;
  padding: 15px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--line);
}

.web-preview-title-wrap,
.web-preview-actions {
  display: flex;
  align-items: center;
  gap: 13px;
}

.web-preview-title-wrap .section-number {
  width: 52px;
  border-color: var(--line);
  color: var(--violet);
  font-family: inherit;
  font-size: 7px;
  font-weight: 900;
  letter-spacing: 0.06em;
}

.web-preview-title-wrap h3 {
  margin: 0;
  font-size: 13px;
}

.web-preview-title-wrap p {
  margin: 4px 0 0;
  color: var(--ink-soft);
  font-size: 9px;
}

.pdf-tabs {
  padding: 4px;
  display: flex;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper-deep);
}

.pdf-tabs button {
  height: 31px;
  padding: 0 12px;
  cursor: pointer;
  border: 0;
  border-radius: 7px;
  color: var(--ink-soft);
  background: transparent;
  font-size: 9px;
  font-weight: 780;
}

.pdf-tabs button.active {
  color: var(--ink);
  background: var(--white);
  box-shadow: 0 2px 8px rgba(28, 35, 33, 0.1);
}

.open-pdf-button {
  height: 39px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid #c9cbc6;
  border-radius: 9px;
  color: var(--ink);
  background: var(--white);
  text-decoration: none;
  font-size: 9px;
  font-weight: 760;
}

.open-pdf-button:hover {
  border-color: var(--violet);
}

.open-pdf-button svg {
  width: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.pdfjs-frame-shell {
  height: min(76vh, 820px);
  min-height: 560px;
  overflow: hidden;
  background: #252827;
}

#pdfjs-preview-frame {
  width: 100%;
  height: 100%;
  display: block;
  border: 0;
  background: #252827;
}

.pdf-preview-note {
  margin: 0;
  padding: 9px 18px;
  color: #7d8582;
  background: #f8f7f2;
  font-size: 8px;
  text-align: right;
}

.viewer-heading {
  margin-top: 55px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.viewer-heading .section-number {
  border-color: var(--line);
}

.viewer-heading p {
  color: var(--ink-soft);
}

.viewer-controls {
  padding: 4px;
  display: flex;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper-deep);
}

.filter-button {
  height: 31px;
  padding: 0 13px;
  cursor: pointer;
  border: 0;
  border-radius: 7px;
  color: var(--ink-soft);
  background: transparent;
  font-size: 10px;
  font-weight: 750;
}

.filter-button.active {
  color: var(--ink);
  background: var(--white);
  box-shadow: 0 2px 8px rgba(28, 35, 33, 0.1);
}

.viewer-column-labels {
  margin: 30px 0 10px;
  padding: 0 19px 0 77px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  color: #77817d;
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.page-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-row {
  display: grid;
  grid-template-columns: 47px minmax(0, 1fr) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.page-row[hidden] {
  display: none;
}

.row-index {
  position: sticky;
  top: 15px;
  padding-top: 13px;
  color: #8b938f;
  font-family: Georgia, serif;
  font-size: 11px;
  text-align: center;
}

.row-index::after {
  content: "";
  width: 1px;
  height: 33px;
  display: block;
  margin: 8px auto 0;
  background: var(--line);
}

.page-card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--white);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(31, 38, 36, 0.055);
}

.page-card.empty {
  min-height: 280px;
  display: grid;
  place-items: center;
  border-style: dashed;
  color: #89918e;
  background: rgba(255, 255, 255, 0.35);
  font-size: 11px;
  box-shadow: none;
}

.page-meta {
  min-height: 47px;
  padding: 9px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border-bottom: 1px solid #e3e3dc;
}

.page-number {
  font-size: 11px;
  font-weight: 800;
}

.change-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 5px;
}

.change-badge {
  padding: 4px 7px;
  border-radius: 100px;
  font-size: 8px;
  font-weight: 850;
}

.change-badge.added { color: #137747; background: var(--green-soft); }
.change-badge.deleted { color: #ac3730; background: var(--red-soft); }
.change-badge.visual { color: #603eb6; background: var(--violet-soft); }
.change-badge.style { color: #a06c0b; background: var(--amber-soft); }
.change-badge.unchanged { color: #65706c; background: #ebece8; }
.change-badge.page-change { color: #9c512a; background: #fee6d7; }

.page-image-button {
  width: 100%;
  padding: 0;
  display: block;
  cursor: zoom-in;
  border: 0;
  background: #dfe1dd;
  line-height: 0;
}

.page-image-button img {
  width: 100%;
  max-height: 760px;
  display: block;
  object-fit: contain;
  object-position: top center;
  background: #e6e7e3;
}

.snippet-panel {
  padding: 11px 12px;
  border-top: 1px solid #e3e3dc;
  color: var(--ink-soft);
  background: #faf9f5;
  font-size: 9px;
  line-height: 1.6;
}

.snippet-panel b {
  margin-right: 5px;
  color: var(--ink);
}

.empty-filter {
  margin-top: 20px;
  padding: 55px 20px;
  border: 1px dashed #bdc4bf;
  border-radius: 15px;
  text-align: center;
}

.empty-filter span {
  width: 42px;
  height: 42px;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  color: #168551;
  background: var(--green-soft);
  font-size: 18px;
}

.empty-filter h3 {
  margin: 15px 0 0;
  font-size: 14px;
}

.empty-filter p {
  margin: 6px 0 0;
  color: var(--ink-soft);
  font-size: 11px;
}

footer {
  width: min(1440px, calc(100% - 56px));
  min-height: 77px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  color: #7e8783;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-link {
  color: inherit;
  text-decoration: none;
}

.footer-link:hover {
  color: var(--ink);
  text-decoration: underline;
}

.processing-overlay {
  position: fixed;
  z-index: 1000;
  inset: 0;
  padding: 24px;
  place-items: center;
  background: rgba(17, 25, 23, 0.77);
  backdrop-filter: blur(8px);
}

.processing-overlay:not([hidden]) {
  display: grid;
}

.processing-card {
  width: min(440px, 100%);
  padding: 48px 42px 38px;
  border-radius: 24px;
  background: var(--white);
  text-align: center;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.28);
}

.scan-animation {
  position: relative;
  width: 90px;
  height: 105px;
  margin: 0 auto 27px;
}

.paper {
  position: absolute;
  width: 67px;
  height: 88px;
  border: 1px solid #cfd3cf;
  border-radius: 5px;
  background: white;
  box-shadow: 0 8px 20px rgba(25, 35, 32, 0.1);
}

.paper-back {
  left: 3px;
  top: 2px;
  transform: rotate(-7deg);
}

.paper-front {
  right: 2px;
  bottom: 0;
  padding: 19px 11px;
  overflow: hidden;
}

.paper-front span {
  height: 3px;
  display: block;
  margin-bottom: 8px;
  border-radius: 2px;
  background: #dfe3df;
}

.paper-front span:nth-child(2) { width: 83%; }
.paper-front span:nth-child(3) { width: 62%; }

.paper-front i {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: var(--orange);
  box-shadow: 0 0 13px 3px rgba(239, 128, 93, 0.55);
  animation: scan 1.8s ease-in-out infinite alternate;
}

@keyframes scan {
  from { transform: translateY(10px); }
  to { transform: translateY(76px); }
}

.processing-card .step-label {
  margin-bottom: 10px;
}

.processing-card h2 {
  margin: 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", Georgia, serif;
  font-size: 24px;
}

.processing-message {
  min-height: 22px;
  margin: 13px 0 20px;
  color: var(--ink-soft);
  font-size: 11px;
}

.indeterminate-progress {
  height: 4px;
  overflow: hidden;
  border-radius: 4px;
  background: #e5e7e3;
}

.indeterminate-progress span {
  width: 38%;
  height: 100%;
  display: block;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--green), var(--orange));
  animation: progress 1.4s ease-in-out infinite;
}

@keyframes progress {
  from { transform: translateX(-110%); }
  to { transform: translateX(275%); }
}

.processing-note {
  margin: 16px 0 0;
  color: #939a97;
  font-size: 9px;
}

.image-modal {
  position: fixed;
  z-index: 1100;
  inset: 0;
  flex-direction: column;
  background: rgba(12, 17, 16, 0.94);
}

.image-modal:not([hidden]) {
  display: flex;
}

.modal-bar {
  height: 64px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: white;
  border-bottom: 1px solid rgba(255, 255, 255, 0.13);
}

.modal-bar h2 {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
}

.modal-bar button {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  cursor: pointer;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
  color: white;
  background: transparent;
}

.modal-bar svg {
  width: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
}

.modal-canvas {
  flex: 1;
  padding: 28px;
  overflow: auto;
  text-align: center;
}

.modal-canvas img {
  max-width: min(1200px, 100%);
  height: auto;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.4);
}

@media (max-width: 1050px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 48px;
    padding-top: 54px;
  }

  .hero-copy {
    max-width: 720px;
  }

  .download-panel {
    align-items: flex-start;
    flex-direction: column;
  }

  .download-actions {
    width: 100%;
  }

  .download-button {
    flex: 1;
    justify-content: center;
  }
}

@media (max-width: 740px) {
  .site-header,
  .hero,
  .result-section,
  footer {
    width: min(100% - 30px, 100%);
  }

  .site-header {
    height: 70px;
  }

  .hero {
    padding: 45px 0 70px;
  }

  .hero h1 {
    font-size: clamp(43px, 13vw, 62px);
  }

  .lead {
    font-size: 14px;
  }

  .compare-panel {
    padding: 25px 18px;
    border-radius: 20px;
  }

  .upload-grid {
    grid-template-columns: 1fr;
  }

  .direction-arrow {
    width: 25px;
    margin: -3px auto;
    padding: 0;
    transform: rotate(90deg);
  }

  .dropzone {
    min-height: 148px;
  }

  .option-grid {
    grid-template-columns: 1fr;
  }

  .result-section {
    padding-top: 55px;
  }

  .result-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .web-preview-header,
  .web-preview-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .web-preview-actions,
  .pdf-tabs {
    width: 100%;
  }

  .pdf-tabs button {
    flex: 1;
  }

  .open-pdf-button {
    width: 100%;
    justify-content: center;
  }

  .pdfjs-frame-shell {
    height: 62vh;
    min-height: 430px;
  }

  .download-actions {
    flex-direction: column;
  }

  .viewer-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .viewer-column-labels {
    display: none;
  }

  .page-list {
    margin-top: 25px;
  }

  .page-row {
    grid-template-columns: 27px 1fr;
    gap: 9px;
  }

  .page-card {
    grid-column: 2;
  }

  .page-card:nth-child(3) {
    margin-top: -1px;
  }

  .row-index {
    grid-row: 1 / span 2;
  }

  .processing-card {
    padding: 40px 24px 32px;
  }

  .modal-canvas {
    padding: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}