:root {
  color-scheme:light;
  --paper:#f7f6f0;
  --ink:#253c30;
  --muted:#6b756c;
  --green:#315b43;
  --line:#e2e6dc;
  --accent:#e6eddf;
  --white:#fffefa;
  --serif:Georgia,'Times New Roman','Songti SC',serif;
  --sans:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Noto Sans',sans-serif;
}

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

body {
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:15px;
  -webkit-font-smoothing:antialiased;
}

button,input,select,textarea {
  font:inherit;
}

button,a,input,select,textarea,[tabindex] {
  -webkit-tap-highlight-color:transparent;
}

a {
  color:inherit;
  text-underline-offset:4px;
}

button {
  cursor:pointer;
}

button:disabled {
  cursor:not-allowed;
}

button,input,textarea,select {
  max-width:100%;
}

button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible,summary:focus-visible {
  outline:3px solid #7c9e65;
  outline-offset:4px;
}

svg {
  fill:none;
  stroke:currentColor;
  stroke-width:1.6;
  stroke-linecap:round;
  stroke-linejoin:round;
}

.shell {
  max-width:1120px;
  margin-inline:auto;
  padding-inline:40px;
}

.skip-link {
  position:absolute;
  left:20px;
  top:-80px;
  z-index:10;
  background:var(--green);
  color:white;
  padding:14px;
  border-radius:8px;
}

.skip-link:focus {
  top:12px;
}

.site-header {
  display:flex;
  align-items:center;
  min-height:106px;
  gap:36px;
}

.brand {
  display:flex;
  align-items:center;
  gap:11px;
  text-decoration:none;
  font-family:var(--serif);
  font-size:27px;
  letter-spacing:-1px;
  font-weight:600;
  white-space:nowrap;
}

.brand img {
  display:block;
}

.brand-dot {
  color:#7a965d;
}

.main-nav {
  display:flex;
  gap:28px;
  margin-left:auto;
  align-items:center;
}

.main-nav a {
  text-decoration:none;
  color:var(--muted);
  font-size:13px;
  font-weight:500;
  padding-block:8px;
  position:relative;
}

.main-nav a:hover,.main-nav a[aria-current] {
  color:var(--ink);
}

.main-nav a[aria-current]::after {
  content:'';
  position:absolute;
  bottom:0;
  left:50%;
  width:4px;
  height:4px;
  background:var(--green);
  border-radius:50%;
}

.language-control {
  display:flex;
  align-items:center;
  gap:7px;
  border:1px solid var(--line);
  border-radius:24px;
  padding:8px 11px;
  background:#ffffff70;
}

.language-control svg {
  width:15px;
  height:15px;
  flex-shrink:0;
  color:var(--muted);
}

.language-control select {
  border:0;
  background:transparent;
  color:var(--ink);
  font-size:12px;
  cursor:pointer;
  min-width:76px;
  padding:1px;
}

.hero {
  display:grid;
  grid-template-columns:1.35fr 1fr;
  align-items:center;
  gap:40px;
  padding:50px 0 58px;
}

.eyebrow {
  font-size:10px;
  letter-spacing:2px;
  line-height:1.6;
  font-weight:700;
  color:#66765c;
  margin:0 0 15px;
}

.hero h1 {
  font-family:var(--serif);
  font-size:65px;
  line-height:1.04;
  font-weight:400;
  letter-spacing:-2.8px;
  margin:0;
  max-width:650px;
}

.hero h1 em {
  font-weight:400;
  color:#6b8255;
}

.hero-description {
  font-size:15px;
  line-height:1.85;
  max-width:470px;
  color:var(--muted);
  margin:22px 0;
}

.hero-facts {
  display:flex;
  flex-wrap:wrap;
  gap:9px 19px;
  align-items:center;
  font-size:10px;
  color:#727e6c;
  line-height:1.7;
}

.hero-facts>span {
  display:flex;
  align-items:center;
  gap:6px;
}

.privacy-dot {
  width:6px;
  height:6px;
  background:#729461;
  border-radius:50%;
}

.book-art {
  height:270px;
  position:relative;
  margin-right:8px;
  pointer-events:none;
  isolation:isolate;
}

.orbit {
  position:absolute;
  border:1px solid #e2e5d7;
  border-radius:50%;
  z-index:-2;
}

.orbit-one {
  width:280px;
  height:250px;
  left:35px;
  top:4px;
  transform:rotate(-22deg);
}

.orbit-two {
  width:240px;
  height:210px;
  left:55px;
  top:23px;
  transform:rotate(24deg);
}

.book-shadow {
  position:absolute;
  left:75px;
  top:227px;
  width:225px;
  height:30px;
  border-radius:50%;
  background:#4a5a3826;
  filter:blur(15px);
}

.back-book {
  position:absolute;
  left:126px;
  top:20px;
  width:150px;
  height:214px;
  background:#d7c8a4;
  border-radius:3px 10px 10px 3px;
  transform:rotate(16deg);
  box-shadow:5px 6px 0 #e8dfc8,6px 8px 0 #c8b994;
}

.back-book::before {
  content:'';
  position:absolute;
  inset:12px;
  border:1px solid #b3a37d;
}

.back-book span {
  position:absolute;
  width:60px;
  height:1px;
  background:#b5a37c;
  left:45px;
  top:40px;
}

.front-book {
  position:absolute;
  left:73px;
  top:1px;
  width:160px;
  height:232px;
  transform:rotate(-12deg);
  background:#3c5d49;
  border-radius:3px 9px 9px 3px;
  box-shadow:4px 5px 0 #eeecd8,5px 8px 0 #aab09b,7px 12px 20px #243f332b;
}

.book-spine {
  position:absolute;
  left:9px;
  top:0;
  bottom:0;
  width:1px;
  background:#ffffff12;
  box-shadow:2px 0 5px #0002;
}

.book-cover {
  text-align:center;
  padding:23px 13px 10px 22px;
  color:#eceacb;
}

.book-small {
  display:block;
  font-size:6px;
  letter-spacing:2px;
}

.book-title {
  display:block;
  font-family:var(--serif);
  font-size:26px;
  line-height:1.04;
  margin-top:13px;
  font-style:italic;
  font-weight:400;
}

.book-cover svg {
  width:64px;
  height:83px;
  margin:9px auto 4px;
  display:block;
  stroke:#d4dbb1;
  stroke-width:1.5;
}

.book-cover svg path:first-child {
  fill:#bccb8b38;
}

.book-edition {
  font-size:5px;
  letter-spacing:1.3px;
}

.art-caption {
  position:absolute;
  bottom:-5px;
  left:50px;
  right:0;
  text-align:center;
  font-family:var(--serif);
  font-size:12px;
  font-style:italic;
  color:#8b927d;
  transform:rotate(-4deg);
}

.workspace {
  display:grid;
  grid-template-columns:minmax(0,1fr) 272px;
  gap:26px;
  align-items:start;
}

.converter-card {
  background:var(--white);
  border:1px solid #e4e8dc;
  border-radius:18px;
  padding:28px;
  box-shadow:0 8px 32px #35452a06;
}

.card-heading {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:15px;
  margin-bottom:24px;
}

.card-heading .eyebrow {
  font-size:9px;
  letter-spacing:1.8px;
  margin:0 0 6px;
}

.card-heading h2 {
  font-family:var(--serif);
  font-size:25px;
  font-weight:400;
  letter-spacing:-.6px;
  margin:0;
}

.version-badge {
  font-size:9px;
  white-space:nowrap;
  background:#f1f3e9;
  border:1px solid #e9edde;
  color:#6c7c61;
  border-radius:20px;
  padding:7px 9px;
  letter-spacing:.6px;
}

.dropzone {
  position:relative;
  background:#f9faf5;
  border:1.5px dashed #cad4bd;
  border-radius:12px;
  padding:30px 18px 26px;
  text-align:center;
  cursor:pointer;
  transition:background .18s,border-color .18s;
}

.dropzone:hover,.dropzone.drag {
  background:#eef3e7;
  border-color:#7c9a66;
}

.dropzone[aria-disabled=true],.cover-zone[aria-disabled=true] {
  cursor:wait;
}

.dropzone input,.cover-zone input {
  position:absolute;
  width:1px;
  height:1px;
  opacity:0;
  overflow:hidden;
  pointer-events:none;
}

.file-illustration {
  display:flex;
  align-items:center;
  justify-content:center;
  gap:17px;
  height:82px;
  margin-bottom:14px;
}

.format-sheet {
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:7px;
  width:54px;
  height:68px;
  border:1px solid #d9ddce;
  border-radius:7px;
  background:white;
  box-shadow:0 3px 6px #30402a05;
}

.format-sheet svg {
  width:22px;
  height:22px;
  stroke-width:1.3;
}

.format-sheet b {
  font-size:8px;
  font-weight:600;
  letter-spacing:1px;
}

.txt-sheet {
  transform:rotate(-10deg);
  color:#829473;
}

.epub-sheet {
  transform:rotate(9deg);
  background:#e9eddd;
  border-color:#d3ddbf;
  color:#536d41;
}

.swap-icon {
  width:20px;
  height:20px;
  color:#97a48a;
  stroke-width:1.2;
}

.drop-title {
  font-size:15px;
  font-weight:500;
  margin:0 0 6px;
}

.drop-hint {
  font-size:12px;
  color:var(--muted);
  margin:0 0 18px;
}

.browse-button {
  display:inline-block;
  font-size:11px;
  border:1px solid #d8dfcd;
  background:#fffefa;
  color:#4a6740;
  border-radius:7px;
  padding:10px 17px;
  font-weight:600;
  box-shadow:0 2px 2px #30402a03;
}

.file-row {
  display:flex;
  align-items:center;
  gap:10px;
  border:1px solid var(--line);
  background:#f3f6ec;
  border-radius:10px;
  padding:15px 13px;
  min-width:0;
}

.file-row .name {
  flex:1;
  min-width:0;
  overflow-wrap:anywhere;
  font-size:13px;
}

.file-check {
  border:1px solid #d0ddc4;
  width:26px;
  height:26px;
  display:grid;
  place-items:center;
  border-radius:50%;
  color:#5c7b47;
  flex-shrink:0;
}

.badge {
  padding:5px 7px;
  font-size:9px;
  letter-spacing:.7px;
  border-radius:4px;
  background:#dde8d3;
  color:#466136;
}

.remove {
  border:0;
  background:transparent;
  color:#7b8872;
  padding:0 5px;
  font-size:23px;
  line-height:1.2;
  border-radius:3px;
}

.remove:hover {
  color:#9f4e3b;
}

.cover-row {
  margin-top:14px;
}

.cover-zone {
  display:flex;
  align-items:center;
  gap:12px;
  position:relative;
  border:1px dashed var(--line);
  border-radius:9px;
  padding:14px;
  cursor:pointer;
}

.cover-zone:hover {
  background:#f8faf3;
}

.cover-zone p {
  margin:0;
  font-size:12px;
  font-weight:500;
}

.cover-zone .muted {
  font-size:11px;
  color:var(--muted);
  margin-top:4px;
  font-weight:400;
  line-height:1.5;
}

.cover-plus {
  width:31px;
  height:35px;
  border:1px solid var(--line);
  border-radius:5px;
  display:grid;
  place-items:center;
  color:#809374;
  font-size:21px;
  flex-shrink:0;
}

.meta-section {
  margin-top:14px;
  border:1px solid var(--line);
  border-radius:9px;
  overflow:hidden;
}

.meta-header {
  width:100%;
  border:0;
  background:transparent;
  display:flex;
  align-items:center;
  justify-content:space-between;
  text-align:left;
  padding:15px;
  color:var(--ink);
  font-size:12px;
  font-weight:500;
}

.meta-header:hover {
  background:#f7f8f0;
}

.meta-header small {
  font-size:10px;
  font-weight:400;
  color:var(--muted);
  margin-left:10px;
}

.arrow {
  transition:transform .2s;
  font-size:19px;
  line-height:1;
}

.meta-header.open .arrow {
  transform:rotate(180deg);
}

.meta-body {
  display:none;
  padding:3px 15px 17px;
}

.meta-grid.show {
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:15px;
}

.meta-row {
  min-width:0;
}

.full {
  grid-column:1/-1;
}

.meta-row label {
  display:block;
  font-size:11px;
  margin-bottom:7px;
  color:#5d6d56;
}

.meta-row input,.meta-row textarea {
  width:100%;
  background:white;
  border:1px solid #dfe5d8;
  border-radius:6px;
  padding:10px 11px;
  color:var(--ink);
  font-size:12px;
  outline-offset:1px;
}

.meta-row input::placeholder,.meta-row textarea::placeholder {
  color:#8d9686;
}

.meta-row textarea {
  resize:vertical;
  min-height:75px;
}

.field-hint {
  font-size:10px;
  color:var(--muted);
  line-height:1.6;
  margin:0;
}

.btn {
  width:100%;
  padding:15px 20px;
  margin-top:20px;
  border:1px solid transparent;
  border-radius:9px;
  font-size:12px;
  font-weight:600;
  transition:background .18s,box-shadow .18s;
}

.btn-primary {
  background:var(--green);
  color:white;
  box-shadow:0 3px 6px #315b4310;
}

.btn-primary:not(:disabled):hover {
  background:#254b36;
  box-shadow:0 4px 12px #315b4320;
}

.btn-primary:disabled {
  background:#e7ebdf;
  color:#94a088;
  box-shadow:none;
}

.btn-primary:not(:disabled)::after {
  content:' →';
  margin-left:10px;
}

.btn-download {
  display:none;
  background:#eaf1e2;
  color:#35592b;
  border-color:#d4e2c7;
  margin-top:10px;
}

.btn-download.show {
  display:block;
}

.btn-download:hover {
  background:#deeacf;
}

.status {
  min-height:16px;
  margin-top:12px;
  text-align:center;
  font-size:11px;
  color:var(--muted);
  line-height:1.5;
  overflow-wrap:anywhere;
}

.status:empty {
  min-height:0;
  margin:0;
}

.status.success {
  color:#4e7542;
}

.status.error {
  color:#a14f3f;
}

.local-note {
  display:flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  color:#8b9680;
  font-size:9px;
  margin-top:18px;
  line-height:1.5;
  text-align:center;
}

.local-note svg {
  width:13px;
  height:13px;
  flex-shrink:0;
}

.workspace-aside {
  padding-top:10px;
}

.steps-card {
  padding:8px 6px 22px 13px;
}

.steps-card .eyebrow {
  font-size:9px;
  margin-bottom:13px;
}

.steps-card h2 {
  font-family:var(--serif);
  font-size:29px;
  line-height:1.2;
  letter-spacing:-.5px;
  font-weight:400;
  margin:0 0 24px;
  max-width:180px;
}

.steps-card ol {
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  gap:22px;
}

.steps-card li {
  display:flex;
  gap:11px;
}

.step-number {
  font-family:var(--serif);
  font-size:12px;
  color:#9ca88b;
  padding-top:3px;
}

.steps-card h3 {
  font-size:12px;
  font-weight:500;
  margin:0 0 5px;
}

.steps-card li p {
  font-size:11px;
  color:var(--muted);
  line-height:1.7;
  margin:0;
}

.sample-card {
  padding:21px 20px;
  background:#eaf0e2;
  border-radius:11px;
  position:relative;
  overflow:hidden;
}

.sample-label {
  font-size:8px;
  letter-spacing:1.3px;
  font-weight:600;
  color:#748569;
}

.sample-card h3 {
  font-family:var(--serif);
  font-size:22px;
  font-weight:400;
  margin:10px 0;
}

.sample-card p {
  font-size:11px;
  line-height:1.7;
  color:#718167;
  margin:0 0 16px;
}

.sample-card a {
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:10px;
  font-weight:600;
  text-decoration:none;
}

.sample-card a:hover {
  text-decoration:underline;
}

.sample-card a>span:last-child {
  font-size:17px;
  font-weight:400;
}

.benefits {
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:45px;
  margin:54px 0 47px;
  padding:0 5px;
}

.benefit-icon {
  font-family:var(--serif);
  font-size:14px;
  font-style:italic;
  color:#8b9d77;
}

.benefits h3 {
  font-family:var(--serif);
  font-size:20px;
  line-height:1.3;
  letter-spacing:-.3px;
  font-weight:400;
  margin:13px 0 10px;
}

.benefits p {
  font-size:12px;
  line-height:1.8;
  color:var(--muted);
  margin:0;
}

.home-faq {
  border-top:1px solid var(--line);
  padding:39px 5px 44px;
  display:grid;
  grid-template-columns:.9fr 1.4fr;
  gap:55px;
}

.home-faq .eyebrow {
  font-size:9px;
  margin-bottom:10px;
}

.home-faq h2 {
  font-family:var(--serif);
  font-size:28px;
  line-height:1.2;
  font-weight:400;
  letter-spacing:-.6px;
  margin:0 0 16px;
  max-width:260px;
}

.text-link {
  font-size:11px;
  font-weight:500;
}

.faq-list details {
  border-bottom:1px solid var(--line);
}

.faq-list details:first-child {
  border-top:1px solid var(--line);
}

.faq-list summary {
  position:relative;
  list-style:none;
  padding:17px 25px 17px 0;
  font-size:12px;
  line-height:1.6;
  cursor:pointer;
}

.faq-list summary::-webkit-details-marker {
  display:none;
}

.faq-list summary::after {
  content:'+';
  position:absolute;
  right:4px;
  color:#8c9b7e;
}

.faq-list details[open] summary::after {
  content:'−';
}

.faq-list p {
  font-size:12px;
  line-height:1.8;
  color:var(--muted);
  margin:0 20px 18px 0;
}

.site-footer {
  border-top:1px solid var(--line);
  padding-top:28px;
  padding-bottom:25px;
  display:grid;
  grid-template-columns:1fr auto;
  gap:20px;
}

.footer-brand {
  font-family:var(--serif);
  font-size:23px;
  text-decoration:none;
  letter-spacing:-.7px;
}

.site-footer p {
  font-size:10px;
  color:#859079;
  margin:7px 0 0;
  line-height:1.7;
}

.site-footer nav {
  display:flex;
  align-items:start;
  gap:21px;
  padding-top:9px;
}

.site-footer nav a {
  font-size:10px;
  text-decoration:none;
  color:#737f69;
}

.site-footer nav a:hover {
  text-decoration:underline;
}

.site-footer .footer-credit {
  grid-column:1/-1;
  font-size:9px;
  color:#98a18d;
  margin:0;
}

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

.document-shell {
  max-width:840px;
  padding-top:48px;
  padding-bottom:75px;
}

.document-heading {
  border-bottom:1px solid var(--line);
  padding-bottom:30px;
  margin-bottom:30px;
}

.document-heading h1 {
  font-family:var(--serif);
  font-size:48px;
  font-weight:400;
  line-height:1.15;
  letter-spacing:-1.5px;
  margin:0;
  max-width:660px;
}

.document-content {
  font-size:14px;
  line-height:1.9;
  color:#61705b;
}

.document-content h2 {
  font-family:var(--serif);
  font-size:27px;
  letter-spacing:-.4px;
  line-height:1.3;
  font-weight:400;
  color:var(--ink);
  margin:37px 0 15px;
}

.document-content h2:first-child {
  margin-top:0;
}

.document-content h3 {
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  margin:30px 0 10px;
}

.document-content p {
  margin:12px 0;
}

.document-content ul,.document-content ol {
  padding-left:24px;
}

.document-content li {
  padding-left:5px;
  margin:12px 0;
}

.document-content a {
  color:#3e663b;
  text-decoration-color:#bccab1;
}

.document-content a:hover {
  text-decoration-color:#3e663b;
}

.document-content pre {
  padding:24px;
  background:#eaf0e2;
  border:1px solid #dfe7d5;
  border-radius:10px;
  white-space:pre-wrap;
  overflow-wrap:anywhere;
  font:12px/1.9 ui-monospace,SFMono-Regular,Consolas,monospace;
  color:#536b47;
  margin:22px 0;
}

.document-content .note {
  font-size:11px;
  color:#8a947e;
  margin-bottom:25px;
}

html[lang=zh-CN] .hero h1 {
  font-size:58px;
  line-height:1.22;
  letter-spacing:-1.5px;
}

html[lang=zh-CN] .hero h1 em {
  font-style:normal;
}

html[lang=zh-CN] .document-heading h1 {
  font-size:41px;
  line-height:1.4;
}

html[lang=zh-CN] .eyebrow {
  letter-spacing:1px;
}

html[lang=zh-CN] .steps-card h2 {
  font-size:25px;
  line-height:1.4;
}

@media(min-width:1400px) {
  .shell {
    max-width:1200px;
  }
  .hero {
    padding-top:65px;
    padding-bottom:70px;
  }
  .hero h1 {
    font-size:73px;
  }
  .book-art {
    margin-left:25px;
  }
  .workspace {
    grid-template-columns:minmax(0,1fr) 290px;
  }
  .document-shell {
    max-width:840px;
  }
}

@media(max-width:900px) {
  .shell {
    padding-inline:28px;
  }
  .site-header {
    gap:22px;
    min-height:90px;
  }
  .main-nav {
    gap:20px;
  }
  .hero {
    gap:15px;
    padding-top:35px;
    padding-bottom:42px;
  }
  .hero h1 {
    font-size:53px;
    letter-spacing:-2px;
  }
  .hero-description {
    font-size:14px;
  }
  .book-art {
    transform:scale(.87);
    transform-origin:center;
    min-width:280px;
    margin-right:-20px;
  }
  .workspace {
    grid-template-columns:minmax(0,1fr) 235px;
    gap:20px;
  }
  .converter-card {
    padding:22px;
  }
  .card-heading h2 {
    font-size:23px;
  }
  .benefits {
    gap:24px;
  }
  .benefits h3 {
    font-size:19px;
  }
  .home-faq {
    gap:30px;
  }
  html[lang=zh-CN] .hero h1 {
    font-size:45px;
  }
  .document-shell {
    padding-top:35px;
  }
}

@media(max-width:680px) {
  .shell {
    padding-inline:22px;
  }
  .site-header {
    min-height:84px;
    gap:12px;
    flex-wrap:wrap;
    padding-block:18px 8px;
  }
  .brand {
    font-size:25px;
    gap:8px;
  }
  .brand img {
    width:31px;
    height:31px;
  }
  .language-control {
    margin-left:auto;
    padding:7px 9px;
  }
  .main-nav {
    order:3;
    flex-basis:100%;
    justify-content:center;
    margin:8px 0 0;
    gap:35px;
    padding-bottom:7px;
    border-bottom:1px solid var(--line);
  }
  .main-nav a {
    font-size:12px;
  }
  .hero {
    grid-template-columns:1fr;
    padding:31px 0 33px;
    gap:0;
    text-align:center;
  }
  .hero-copy {
    max-width:520px;
    margin:auto;
  }
  .hero h1 {
    font-size:53px;
    line-height:1.07;
    letter-spacing:-2px;
  }
  .hero-description {
    font-size:13px;
    max-width:390px;
    margin:19px auto;
  }
  .hero .eyebrow {
    font-size:9px;
  }
  .hero-facts {
    justify-content:center;
    font-size:9px;
    gap:8px 13px;
  }
  .book-art {
    height:223px;
    width:320px;
    min-width:0;
    justify-self:center;
    transform:scale(.8);
    transform-origin:top center;
    margin:35px 0 -26px;
  }
  .art-caption {
    bottom:-29px;
  }
  .workspace {
    grid-template-columns:1fr;
    gap:22px;
  }
  .converter-card {
    padding:22px;
    border-radius:14px;
  }
  .card-heading {
    margin-bottom:20px;
  }
  .card-heading h2 {
    font-size:24px;
  }
  .dropzone {
    padding:27px 12px 24px;
  }
  .workspace-aside {
    display:grid;
    grid-template-columns:1.1fr 1fr;
    gap:24px;
    padding:4px 0 0;
  }
  .steps-card {
    padding:0 0 0 3px;
  }
  .steps-card h2 {
    font-size:26px;
    margin-bottom:19px;
  }
  .steps-card ol {
    gap:15px;
  }
  .steps-card li {
    gap:8px;
  }
  .steps-card li p {
    font-size:10px;
  }
  .sample-card {
    align-self:start;
    padding:18px 16px;
  }
  .sample-card h3 {
    font-size:23px;
    line-height:1.2;
  }
  .sample-card p {
    font-size:11px;
  }
  .sample-card a {
    font-size:10px;
    gap:8px;
  }
  .benefits {
    grid-template-columns:1fr;
    gap:24px;
    margin:35px 0;
    padding:0 2px;
  }
  .benefits article {
    display:grid;
    grid-template-columns:35px 1fr;
    gap:0 7px;
  }
  .benefit-icon {
    grid-row:1/3;
    padding-top:3px;
  }
  .benefits h3 {
    font-size:22px;
    margin:0 0 7px;
  }
  .benefits p {
    font-size:12px;
    max-width:450px;
  }
  .home-faq {
    grid-template-columns:1fr;
    gap:25px;
    padding:29px 2px 35px;
  }
  .home-faq h2 {
    max-width:100%;
    font-size:29px;
    margin-bottom:12px;
  }
  .faq-list summary {
    font-size:12px;
    padding-block:17px;
  }
  .site-footer {
    grid-template-columns:1fr;
    padding-top:25px;
    gap:17px;
  }
  .site-footer nav {
    padding-top:0;
    flex-wrap:wrap;
    gap:23px;
  }
  .site-footer .footer-credit {
    font-size:9px;
  }
  .document-shell {
    padding-top:35px;
    padding-bottom:45px;
  }
  .document-heading {
    padding-bottom:25px;
  }
  .document-heading h1 {
    font-size:40px;
    letter-spacing:-1px;
  }
  .document-content {
    font-size:13px;
  }
  .document-content h2 {
    font-size:25px;
  }
  .document-content h3 {
    font-size:14px;
  }
  .document-content pre {
    padding:18px;
    font-size:11px;
  }
  html[lang=zh-CN] .hero h1 {
    font-size:43px;
    letter-spacing:-1px;
  }
  html[lang=zh-CN] .document-heading h1 {
    font-size:34px;
  }
  html[lang=zh-CN] .steps-card h2 {
    font-size:23px;
  }
}

@media(max-width:380px) {
  .shell {
    padding-inline:16px;
  }
  .hero h1 {
    font-size:47px;
  }
  .converter-card {
    padding:17px;
  }
  .drop-title {
    font-size:14px;
  }
  .card-heading h2 {
    font-size:22px;
  }
  .version-badge {
    font-size:8px;
    padding:6px;
  }
  .workspace-aside {
    gap:16px;
  }
  .meta-grid.show {
    grid-template-columns:1fr;
  }
  .full {
    grid-column:auto;
  }
  .sample-card {
    padding:17px 12px;
  }
  .local-note {
    font-size:8px;
  }
  html[lang=zh-CN] .hero h1 {
    font-size:38px;
  }
}

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

/* Keep the converter close to the first screen on small devices. */
@media(max-width:680px) {
  .hero {
    grid-template-columns:minmax(0,1fr);
  }
  .hero-copy {
    width:100%;
    min-width:0;
  }
  .hero h1 {
    font-size:46px;
  }
  .book-art {
    display:none;
  }
  .hero-description {
    margin:17px auto;
  }
  .hero {
    padding-bottom:30px;
  }
  .meta-row input,.meta-row textarea {
    font-size:16px;
  }
  .steps-card li p {
    font-size:12px;
  }
  .sample-card a {
    font-size:11px;
  }
}

@media(max-width:380px) {
  .hero h1 {
    font-size:40px;
  }
  .workspace-aside {
    grid-template-columns:1fr;
  }
  .steps-card h2 {
    max-width:none;
  }
  .steps-card ol {
    gap:16px;
  }
  .sample-card {
    padding:20px;
  }
  .sample-card h3 {
    font-size:25px;
  }
}

.local-note {
  font-size:11px;
  color:#6b756c;
}

.hero-facts {
  color:#64715d;
}

.site-footer p,.site-footer .footer-credit {
  color:#6b756c;
}

.site-footer p {
  font-size:11px;
}

.site-footer nav a {
  font-size:12px;
  color:#64715d;
}

.field-hint {
  font-size:11px;
}

.meta-row input::placeholder,.meta-row textarea::placeholder {
  color:#6b756c;
}

.sample-card p {
  color:#66765c;
}

.document-content .note {
  color:#6b756c;
}

/* Reading guides share the converter's typography and colors. */
.conversion-guides {
  margin: 52px 0 64px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}
.conversion-guides h2 {
  font-family: var(--serif);
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 400;
  margin: 12px 0 24px;
}
.guide-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.guide-card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
}
.guide-card:hover {
  border-color: var(--green);
}
.guide-card h3 {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 400;
  margin: 0 0 10px;
}
.guide-card p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
  margin: 0 0 22px;
}
.guide-card .text-link {
  margin-top: auto;
}
.article-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  margin: -16px 0 36px;
}
.article-cta {
  display: inline-block;
  padding: 12px 20px;
  background: var(--green);
  color: #fff;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 500;
}
.locale-links {
  font-size: 12px;
  margin-top: 16px;
}
.locale-links a {
  color: var(--muted);
  margin-right: 16px;
}
#converter {
  scroll-margin-top: 24px;
}
@media (max-width: 760px) {
  .guide-cards { grid-template-columns: minmax(0, 1fr); }
  .conversion-guides { margin: 36px 0; }
  .guide-card { padding: 22px; }
}