:root {
  color-scheme:light;
  --paper:#f7f8f4;
  --ink:#253b32;
  --muted:#68745f;
  --line:#dce1d5;
  --green:#254e3d;
  --accent:#e9f0d6;
  --white:#fff;
  --error:#9b3b2e;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-synthesis:none;
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
}

* {
  box-sizing:border-box;
}

body {
  margin:0;
  background:var(--paper);
  color:var(--ink);
}

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

button,input {
  font:inherit;
}

button,a {
  touch-action:manipulation;
}

button {
  cursor:pointer;
}

button:disabled {
  cursor:wait;
}

a {
  color:inherit;
}

button:focus-visible,a:focus-visible {
  outline:3px solid #7ca97e;
  outline-offset:5px;
}

[hidden] {
  display:none!important;
}

.page {
  width:min(1040px,100% - 96px);
  min-height:100svh;
  margin:auto;
  display:flex;
  flex-direction:column;
}

.masthead {
  height:104px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-bottom:1px solid var(--line);
}

.wordmark {
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:20px;
  font-weight:600;
  letter-spacing:1px;
}

.wordmark-en {
  font-family:"Avenir Next",Avenir,sans-serif;
  font-size:13px;
  font-weight:500;
  letter-spacing:1.5px;
  margin-left:9px;
}

.local-label {
  display:flex;
  align-items:center;
  gap:8px;
  color:#687260;
  font-size:12px;
}

.status-dot {
  width:6px;
  height:6px;
  border-radius:100%;
  background:#688963;
}

main {
  width:min(620px,100%);
  margin:0 auto;
  padding:64px 0 48px;
  flex:1;
}

.intro {
  text-align:center;
}

.eyebrow {
  font-size:11px;
  letter-spacing:3px;
  color:#68745f;
  margin:0 0 17px;
}

h1 {
  font-weight:500;
  font-size:clamp(32px,5vw,45px);
  letter-spacing:-1.6px;
  line-height:1.3;
  margin:0;
}

h1 span {
  font-family:"Avenir Next","PingFang SC",sans-serif;
  font-weight:500;
}

.subtitle {
  font-size:14px;
  color:var(--muted);
  margin:18px 0 34px;
  line-height:1.6;
}

.converter {
  width:100%;
}

.drop-zone {
  background:#ffffffa8;
  border:1px dashed #bfcbb5;
  border-radius:12px;
  min-height:322px;
  transition:background .18s,border-color .18s;
}

.drop-zone.dragging {
  background:#edf3e2;
  border-color:var(--green);
  outline:3px solid #e0e9d3;
  outline-offset:5px;
}

.empty-state,.busy-state {
  display:flex;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  text-align:center;
  padding:34px 22px 27px;
  min-height:322px;
}

.frame-mark {
  position:relative;
  width:76px;
  height:69px;
  margin-bottom:17px;
}

.frame-back {
  position:absolute;
  width:47px;
  height:50px;
  left:9px;
  top:1px;
  transform:rotate(-11deg);
  border:1.2px solid #aabd94;
  border-radius:7px;
  background:#eff2e7;
}

.frame-front {
  position:absolute;
  width:49px;
  height:50px;
  left:21px;
  top:10px;
  display:grid;
  place-items:center;
  background:#fcfdf9;
  border:1.2px solid #577447;
  border-radius:7px;
}

.frame-badge {
  position:absolute;
  bottom:0;
  left:2px;
  background:var(--accent);
  color:#456031;
  border:1px solid #c4d6ae;
  border-radius:4px;
  font:600 9px "Avenir Next",sans-serif;
  padding:3px 5px;
  letter-spacing:1px;
}

h2 {
  font-size:18px;
  font-weight:500;
  margin:0;
  line-height:1.5;
}

.drop-description {
  font-size:12px;
  color:var(--muted);
  margin:9px 0 21px;
}

.button {
  display:inline-flex;
  justify-content:center;
  align-items:center;
  gap:22px;
  min-height:44px;
  padding:11px 24px;
  border:1px solid transparent;
  border-radius:6px;
  font-size:13px;
  font-weight:500;
  text-decoration:none;
  transition:background .15s,transform .15s;
}

.primary {
  background:var(--green);
  color:#f4f7ed;
}

.primary:hover {
  background:#173e2d;
  transform:translateY(-1px);
}

.primary:active {
  transform:translateY(0);
}

.secondary {
  color:#68745f;
  background:transparent;
  padding:10px 15px;
}

.secondary:hover {
  background:#edf1e6;
}

.file-guidance {
  font-size:11px;
  color:#68745f;
  margin:20px 0 0;
  line-height:1.7;
}

.quality-note {
  display:flex;
  align-items:center;
  justify-content:center;
  gap:11px;
  margin-top:19px;
}

.quality-icon {
  display:grid;
  place-items:center;
  border:1px solid #cfd8c0;
  width:24px;
  height:24px;
  border-radius:50%;
  font:16px Georgia,serif;
  color:#547144;
}

.quality-note p {
  margin:0;
  font-size:11px;
  line-height:1.8;
  display:flex;
  gap:11px;
}

.quality-note strong {
  font-weight:500;
  color:#4b6440;
}

.quality-note p span {
  color:#68745f;
}

.format-note {
  font-size:10px;
  line-height:1.8;
  color:#68745f;
  text-align:center;
  margin:19px 0 0;
}

footer {
  height:65px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  color:#68745f;
  font-size:10px;
  letter-spacing:1px;
}

footer span:last-child {
  font:10px "Avenir Next",sans-serif;
  letter-spacing:2px;
}

.spinner {
  display:block;
  width:33px;
  height:33px;
  border-radius:100%;
  border:2px solid #dfe7d4;
  border-top-color:var(--green);
  animation:spin 1s linear infinite;
  margin-bottom:25px;
}

.busy-state>p {
  font-size:12px;
  color:var(--muted);
  line-height:1.8;
}

.busy-state .filename {
  max-width:90%;
  margin-top:19px;
}

.busy-state .elapsed {
  font-size:11px;
  font-variant-numeric:tabular-nums;
  margin-top:0;
  color:#68745f;
}

.filename {
  overflow-wrap:anywhere;
  font-size:12px;
  color:#6b7563;
  line-height:1.7;
  margin:14px 0 3px;
}

.error-message {
  margin-top:12px;
  padding:14px 17px;
  border:1px solid #eccfc2;
  border-radius:7px;
  background:#fcf1e9;
  color:var(--error);
  font-size:12px;
  line-height:1.8;
  overflow-wrap:anywhere;
}

.result-state {
  padding:22px 24px 24px;
  text-align:center;
}

.result-heading {
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:19px;
  gap:10px;
  font-size:12px;
}

.success-label {
  display:flex;
  align-items:center;
  gap:7px;
  color:#456b3f;
}

.result-size {
  color:#68745f;
  font-size:11px;
  font-variant-numeric:tabular-nums;
}

.preview {
  background:#eef0e9;
  border-radius:6px;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:120px;
  max-height:360px;
}

.preview img {
  display:block;
  max-width:100%;
  max-height:360px;
  width:auto;
  height:auto;
  object-fit:contain;
}

.result-meta {
  font-size:11px;
  line-height:1.8;
  color:#68745f;
  margin:2px 0 20px;
  font-variant-numeric:tabular-nums;
}

.result-actions {
  display:flex;
  gap:13px;
  align-items:center;
  justify-content:center;
}

.result-notice {
  font-size:11px;
  color:#68745f;
  line-height:1.8;
  margin:17px 0 0;
  text-align:left;
  border-top:1px solid #e5e9dc;
  padding-top:13px;
}

.sr-only {
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;
  border:0;
}

@keyframes spin {
  to {
    transform:rotate(360deg);
  }
}

@media(min-height:900px) {
  main {
    padding-top:90px;
  }
}

@media(max-width:600px) {
  .page {
    width:calc(100% - 36px);
  }
  .masthead {
    height:78px;
  }
  .wordmark {
    font-size:18px;
  }
  .local-label {
    font-size:10px;
  }
  main {
    padding:48px 0 38px;
  }
  .subtitle {
    font-size:12px;
    margin-bottom:29px;
  }
  .empty-state {
    padding-inline:14px;
  }
  .file-guidance {
    font-size:10px;
  }
  .quality-note {
    gap:7px;
  }
  .quality-note p {
    gap:7px;
    font-size:10px;
  }
  .format-note {
    font-size:10px;
    padding-inline:10px;
  }
  .result-state {
    padding:18px 16px 22px;
  }
  .result-actions {
    gap:6px;
  }
  .preview,.preview img {
    max-height:300px;
  }
  footer {
    font-size:9px;
  }
  h1 {
    letter-spacing:-1px;
  }
}

@media(prefers-reduced-motion:reduce) {
  *,*::before,*::after {
    animation-duration:2s!important;
    transition:none!important;
  }
  .primary:hover {
    transform:none;
  }
}

body[data-state="result"] .intro {
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;
  border:0;
}

body[data-state="result"] main {
  padding-top:34px;
}

.result-source {
  font-size:11px;
  line-height:1.8;
  color:var(--muted);
  margin:-13px 0 20px;
}

.header-actions {display:flex;align-items:center;gap:15px;}
.text-button {border:0;background:transparent;color:var(--muted);font-size:11px;padding:9px 0;min-height:36px;text-decoration:underline;text-underline-offset:4px;}
.status-dot[data-online="false"] {background:#ae9060;}
.status-dot[data-online="unknown"] {background:#a6ada0;}
.login-state {min-height:322px;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center;padding:34px 22px 27px;}
.login-form {display:flex;align-items:stretch;gap:9px;width:min(330px,100%);}
.login-form input {min-width:0;width:100%;border:1px solid #cbd6c0;background:#fff;border-radius:6px;padding:11px 12px;font-size:16px;color:var(--ink);}
.login-form input:focus-visible {outline:2px solid #7ca97e;outline-offset:2px;}
.login-form .button {flex-shrink:0;padding-inline:19px;}
.login-form .button:disabled {opacity:.6;}
.privacy-note,.expiry-note {font-size:10px;line-height:1.8;text-align:center;color:var(--muted);margin:10px 0 0;}
.worker-note {font-size:11px;line-height:1.8;color:#896b37;margin:13px 0 0;}
.upload-progress {width:min(230px,100%);height:5px;appearance:none;border:0;border-radius:5px;overflow:hidden;margin:7px 0;background:#e6ebde;}
.upload-progress::-webkit-progress-bar {background:#e6ebde;}
.upload-progress::-webkit-progress-value {background:var(--green);}
.upload-progress::-moz-progress-bar {background:var(--green);}
.preview-status {font-size:12px;line-height:1.8;color:var(--muted);padding:20px;}
.reconnect {margin-top:10px;}
.busy-state #busy-description {max-width:390px;}
.result-state .expiry-note {margin-top:17px;}
@media(max-width:600px) {
  .header-actions {gap:11px;}
  .text-button {font-size:10px;}
  .login-form {max-width:290px;}
  .login-form .button {padding-inline:15px;}
  .login-state {padding-inline:17px;}
}

.result-details {margin:14px 0 18px;color:var(--muted);font-size:11px;line-height:1.8;text-align:left;}
.result-details summary {cursor:pointer;text-align:center;min-height:36px;padding:7px 0;}
.result-details p,.result-details .result-meta,.result-details .result-source {margin:8px 0;}
.result-details summary:focus-visible,.recovery-actions button:focus-visible {outline:2px solid var(--green);outline-offset:3px;}
.recovery-actions {display:flex;align-items:center;justify-content:center;gap:20px;padding:0 20px 18px;flex-wrap:wrap;}
.recovery-actions .text-button {border:0;background:transparent;color:var(--muted);font-size:12px;min-height:44px;text-decoration:underline;text-underline-offset:4px;}
.draft-note {font-size:12px;line-height:1.8;color:var(--muted);margin:14px 20px;text-align:center;}
body[data-state="busy"] .result-details {display:none;}

.share-note {font-size:12px;color:var(--muted);line-height:1.8;text-align:center;margin:12px 0;}

.background-upload {display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:0 22px 18px;color:var(--muted);font-size:11px;}
.background-upload progress {width:80px;height:4px;}
.background-upload .text-button {font-size:11px;min-height:40px;}
body[data-state="result"] .background-upload,body[data-state="login"] .background-upload {display:none;}