:root{
  color-scheme: light;
  /* Base/background */
  --bg-white: #fbf8f3;
  --bg-light: #fffdfa;
  --bg-cream: #f6efe7;
  --bg-dark: #21415b;
  
  /* Text */
  --text-dark: #213648;
  --text-light: #ffffff;
  --text-gray: #6f7f92;
  
  /* Accents */
  --accent-black: #213648;
  --accent-white: #ffffff;
  --divider: #dde5ec;
  --divider-dark: #9aaab8;
  
  /* Copy theme colors */
  --color-primary: #e46a45;
  --color-secondary: #154f78;
  --color-accent: #d89b45;
  --color-complement: #3b6671;
  --color-light: #efd48a;
  
  /* Shadows */
  --shadow-soft: 0 4px 12px rgba(33,54,72,0.06);
  --shadow-med: 0 8px 24px rgba(33,54,72,0.10);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{
  color-scheme: light;
  background:var(--bg-white);
}
body{
  font-family:'Inter','Helvetica Neue','Segoe UI',sans-serif;
  color:var(--text-dark);
  background:var(--bg-white);
  min-height:100vh;
  position:relative;
  overflow-x:hidden;
  letter-spacing:0.3px;
  line-height:1.6;
}

/* 鑳屾櫙瑁呴グ锛堝嚑浣曞浘褰級 */
body::before{
  content:'';
  position:fixed;
  top:-200px;
  left:-100px;
  width:400px;
  height:400px;
  background:var(--color-primary);
  clip-path:polygon(0 0, 100% 0, 0 100%);
  opacity:0.08;
  pointer-events:none;
  z-index:0;
}

body::after{
  content:'';
  position:fixed;
  bottom:-100px;
  right:-150px;
  width:350px;
  height:350px;
  background:var(--color-secondary);
  clip-path:polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
  opacity:0.06;
  pointer-events:none;
  z-index:0;
}

/* 瀵艰埅 */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:50;
  background:var(--bg-light);
  border-bottom:3px solid var(--color-primary);
  padding:16px 0;
  height:auto;
  box-shadow:var(--shadow-soft);
}

/* 鍙€夛細婊氬姩鏃跺姞娣辨诞璧锋劅 */
.site-header.scrolled{ box-shadow:var(--shadow-med) }

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  max-width:1400px;
  margin:0 auto;
  padding:0 60px;
}

.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:inherit;padding:0}
.logo-mark{width:28px;height:28px;display:block}
.logo-mark-alt{width:28px;height:28px;display:block}
.logo-mark-v2{width:28px;height:28px;display:block}
.logo-word{display:flex;flex-direction:column;line-height:1}
.logo-title{font-size:18px;font-weight:900;letter-spacing:-0.5px;color:var(--color-secondary);font-family:'Montserrat',sans-serif}
.logo-title .accent{color:var(--color-primary)}
.logo-sub{font-size:11px;font-weight:600;letter-spacing:2px;color:var(--text-gray);text-transform:uppercase;margin-top:2px}
.logo-sub--spaced{letter-spacing:3px}
.logo--alt .logo-title{color:var(--color-primary)}
.logo--alt .logo-title .accent{color:var(--color-secondary)}



.nav{
  display:flex;
  gap:50px;
  list-style:none;
  margin:0;
  padding:0;
}

.nav a{
  color:var(--text-gray);
  text-decoration:none;
  font-size:12px;
  font-weight:700;
  letter-spacing:1px;
  text-transform:uppercase;
  transition:.3s ease;
  position:relative;
}

.nav a::before{
  content:'';
  position:absolute;
  bottom:-8px;
  left:0;
  width:0;
  height:3px;
  background:var(--color-primary);
  clip-path:polygon(0 0, 100% 0, 90% 100%, 0 100%);
  transition:.3s ease;
}

.nav a:hover{ color:var(--color-primary) }
.nav a:hover::before{ width:100% }

.actions{display:flex;gap:16px;align-items:center}
.lang-entry{display:flex;align-items:center;gap:10px}
.lang-label{font-size:11px;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--text-gray)}
.lang-select{min-width:148px;height:38px;border:2px solid var(--color-secondary);background:var(--bg-white);color:var(--color-secondary);padding:0 36px 0 12px;font-size:11px;font-weight:700;letter-spacing:1px;text-transform:uppercase;font-family:inherit;clip-path:polygon(0 0, 100% 0, 95% 100%, 0 100%);cursor:pointer;appearance:none;-webkit-appearance:none;-moz-appearance:none;background-image:linear-gradient(45deg, transparent 50%, var(--color-secondary) 50%), linear-gradient(135deg, var(--color-secondary) 50%, transparent 50%);background-position:calc(100% - 18px) 15px, calc(100% - 12px) 15px;background-size:6px 6px, 6px 6px;background-repeat:no-repeat}
.lang-select:hover{box-shadow:var(--shadow-soft)}
.lang-select:focus-visible{outline:2px solid var(--accent-black);outline-offset:3px}
.mobile-lang-switcher{margin-top:18px;padding-top:18px;border-top:1px solid rgba(21,79,120,.08)}
.mobile-lang-title{display:block;margin:0 0 10px;font-size:11px;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--text-gray)}
.lang-switcher-list{display:flex;flex-wrap:wrap;gap:8px}
.lang-link{display:inline-flex;align-items:center;justify-content:center;padding:7px 10px;border:1px solid var(--color-secondary);color:var(--color-secondary);text-decoration:none;font-size:11px;font-weight:700;line-height:1.2;background:var(--bg-white)}
.lang-link:hover{background:var(--color-secondary);color:#fff}

.btn{
  -webkit-appearance:none;
  -moz-appearance:none;
  appearance:none;
  border:2px solid var(--color-secondary);
  background:transparent;
  color:var(--color-secondary);
  padding:8px 20px;
  border-radius:0;
  cursor:pointer;
  transition:.3s ease;
  font-weight:700;
  font-size:11px;
  text-transform:uppercase;
  letter-spacing:1px;
  font-family:inherit;
  clip-path:polygon(0 0, 100% 0, 95% 100%, 0 100%);
}

.btn:hover{
  background:var(--color-secondary);
  color:white;
  box-shadow:var(--shadow-med);
}

.btn.primary{
  background:var(--color-secondary);
  border-color:var(--color-secondary);
  color:white;
  box-shadow:var(--shadow-soft);
}

.btn.primary:hover{ box-shadow:var(--shadow-med); transform:translateY(-2px) }

/* 鍙闂€ц仛鐒︽牱寮?*/
:focus-visible{outline:2px solid var(--accent-black);outline-offset:2px}
.nav a:focus-visible,
.btn:focus-visible,
.btn-hero:focus-visible,
.upload-btn:focus-visible{outline:2px solid var(--accent-black);outline-offset:3px}

/* 涓诲鍣?*/
main{
  margin-top:70px;
  padding:40px 60px 60px;
  max-width:1400px;
  margin-left:auto;
  margin-right:auto;
  position:relative;
  z-index:2;
}

/* Hero */
.hero{
  text-align:center;
  margin-bottom:60px;
}

.hero-title{
  font-size:clamp(28px, 6vw, 56px);
  font-weight:900;
  margin:0 0 12px;
  line-height:1.1;
  letter-spacing:clamp(-0.5px, -0.2vw, -2px);
  color:var(--color-primary);
  font-family:'Montserrat',sans-serif;
  animation:title-pop 1s cubic-bezier(0.34,1.56,0.64,1);
}

@keyframes title-pop{
  from{ opacity:0; transform:scale(0.8) rotateX(20deg) }
  to{ opacity:1; transform:scale(1) rotateX(0deg) }
}

.hero-desc{
  font-size:clamp(13px, 1.4vw, 16px);
  color:var(--text-gray);
  margin:0 auto 20px;
  max-width:600px;
  line-height:1.5;
  animation:fade-up 1s ease-out 0.2s both;
}

@keyframes fade-up{
  from{ opacity:0; transform:translateY(30px) }
  to{ opacity:1; transform:translateY(0) }
}

.hero-buttons{
  display:flex;
  gap:24px;
  justify-content:center;
  flex-wrap:wrap;
  animation:fade-up 1s ease-out 0.4s both;
}

/* Flex gap fallback via .no-flex-gap class (set by runtime detection) */
.no-flex-gap .nav > * + *{ margin-left:50px }
.no-flex-gap .actions > * + *{ margin-left:16px }
.no-flex-gap .hero-buttons > * + *{ margin-left:24px }
.no-flex-gap .upload-actions > * + *{ margin-left:16px }
/* footer link rows fallback */
.no-flex-gap .footer-links > * + *{ margin-left:40px }
.no-flex-gap .footer-social > * + *{ margin-left:24px }

.btn-hero{
  padding:16px 48px;
  border:3px solid var(--color-primary);
  background:var(--color-primary);
  color:white;
  border-radius:0;
  cursor:pointer;
  font-weight:700;
  font-size:13px;
  letter-spacing:1px;
  transition:.3s ease;
  font-family:inherit;
  position:relative;
  overflow:hidden;
  text-transform:uppercase;
  clip-path:polygon(0 0, 100% 0, 90% 100%, 0 100%);
  box-shadow:var(--shadow-soft);
}

.btn-hero::before{
  content:'';
  position:absolute;
  top:0;
  left:-100%;
  width:100%;
  height:100%;
  background:var(--color-secondary);
  transition:.5s ease;
  z-index:-1;
}

.btn-hero:hover::before{ left:0 }
.btn-hero:hover{ box-shadow:var(--shadow-med); transform:translateY(-4px) }

.btn-hero.secondary{
  background:transparent;
  border-color:var(--color-secondary);
  color:var(--color-secondary);
}

.btn-hero.secondary:hover{ background:var(--color-secondary); color:white }

/* 涓婁紶鍗＄墖 */
.upload-card{
  background:white;
  border:none;
  border-radius:0;
  padding:48px 50px;
  max-width:800px;
  margin:40px auto;
  text-align:center;
  box-shadow:var(--shadow-med);
  position:relative;
  animation:card-scale 0.8s cubic-bezier(0.34,1.56,0.64,1);
  clip-path:polygon(0 0, 100% 3%, 100% 100%, 0 97%);
}

@keyframes card-scale{
  from{ opacity:0; transform:scale(0.9) translateY(40px) }
  to{ opacity:1; transform:scale(1) translateY(0) }
}

.upload-card::before{
  content:'';
  position:absolute;
  top:0; left:0; width:100%; height:6px;
  background:linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-light));
}

.upload-card:hover{ box-shadow:0 16px 40px rgba(0,0,0,0.12) }

.upload-icon{
  font-size:96px;
  margin-bottom:16px;
  display:block;
  animation:icon-rotate 4s ease-in-out infinite;
}

@keyframes icon-rotate{ 0%,100%{transform:rotateZ(0deg) scale(1)} 50%{transform:rotateZ(20deg) scale(1.1)} }

.upload-title{ font-size:clamp(22px, 4vw, 32px); font-weight:900; margin:0 0 10px; color:var(--color-primary); letter-spacing:-0.5px; font-family:'Montserrat',sans-serif }

.upload-desc{ font-size:15px; color:var(--text-gray); margin:0 0 8px; line-height:1.5 }

.upload-actions{ display:flex; gap:12px; justify-content:center; flex-wrap:wrap; margin:16px 0 20px }

.upload-btn{
  padding:12px 32px;
  border:2px solid var(--color-secondary);
  background:transparent;
  color:var(--color-secondary);
  border-radius:0;
  cursor:pointer;
  font-weight:700;
  font-size:12px;
  letter-spacing:0.5px;
  transition:.3s ease;
  font-family:inherit;
  text-transform:uppercase;
  clip-path:polygon(0 0, 100% 0, 95% 100%, 0 100%);
}

.upload-btn:hover{ background:var(--color-secondary); color:white; box-shadow:var(--shadow-soft); transform:translateY(-2px) }
.upload-btn.primary{ background:var(--color-secondary); border-color:var(--color-secondary); color:white; box-shadow:var(--shadow-soft) }
.upload-btn.primary:hover{ box-shadow:var(--shadow-med) }

#fileInput{display:none}

.preview{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(140px,1fr));
  gap:16px;
  justify-content:stretch;
  margin:40px 0;
}

/* Collapse spacing when no files are selected */
.preview:empty{ margin:12px 0 0 }

.preview-item{
  position:relative;
  border:1px solid var(--divider);
  padding:8px;
  background:var(--bg-white);
  transition:.3s;
  cursor:zoom-in;
}

.preview-item:hover{ border-color:var(--accent-black) }

/* Hover magnifier overlay */
.preview-item::after{
  content:'\1F50D';
  position:absolute;
  top:50%;
  left:50%;
  transform:translate(-50%,-50%) scale(.9);
  width:36px;
  height:36px;
  border-radius:50%;
  background:rgba(21,79,120,.78);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:18px;
  opacity:0;
  transition:.2s ease;
  z-index:3;
  pointer-events:none;
}
.preview-item:hover::after{opacity:1;transform:translate(-50%,-50%) scale(1)}

.preview-thumb{
  width:100%;
  height:160px;
  object-fit:cover;
  background:var(--bg-light);
  display:block;
  border:none;
}

.preview-embed{
  width:100%;
  height:160px;
  border:none;
  background:var(--bg-light);
}

/* Add-tile for adding more files */
.preview-add{
  position:relative;
  border:1px dashed var(--divider);
  background:var(--bg-white);
  transition:.3s;
  padding:8px; /* match .preview-item padding */
  cursor:pointer;
}
.preview-add:hover{ border-color:var(--accent-black) }
.preview-add-box{
  display:flex;
  align-items:center;
  justify-content:center;
  height:160px; /* match .preview-thumb/.preview-embed height */
  background:var(--bg-white);
}
.preview-add .plus{
  font-size:36px;
  color:var(--text-gray);
  line-height:1;
}

/* 棰勮鏀惧ぇ Lightbox */
.lightbox{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(28,43,58,.50);display:flex;align-items:center;justify-content:center;padding:20px;z-index:1000}
.lightbox[hidden]{display:none}
.lightbox-content{max-width:90vw;max-height:90vh;background:var(--bg-white);color:var(--text-dark);border:1px solid var(--divider)}
.lightbox-content img{display:block;max-width:90vw;max-height:90vh;width:auto;height:auto;border:none}
.lightbox-content embed{display:block;width:85vw;height:85vh;border:none;background:var(--bg-light)}
.lightbox-close{position:fixed;top:20px;right:20px;background:var(--color-secondary);color:#fff;border:1px solid rgba(255,255,255,.18);width:32px;height:32px;cursor:pointer;line-height:32px;text-align:center;font-size:18px;box-shadow:var(--shadow-soft);transition:background .2s ease, transform .2s ease}
/* Allow toggling via class for OCR lightbox */
.lightbox.show{display:flex !important}
.lightbox-close:hover{background:var(--color-primary);transform:translateY(-1px)}

.preview-name{
  margin:8px 0 0;
  font-size:12px;
  color:var(--text-dark);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.preview-remove{
  position:absolute;
  top:6px;
  right:6px;
  background:var(--color-secondary);
  color:#fff;
  border:none;
  width:22px;
  height:22px;
  cursor:pointer;
  line-height:22px;
  text-align:center;
  font-size:12px;
  box-shadow:var(--shadow-soft);
  transition:background .2s ease, transform .2s ease;
}

.upload-card.dragover{ border-color:var(--accent-black); background:var(--bg-white) }
.preview-remove:hover{background:var(--color-primary);transform:scale(1.05)}

.thumb{
  width:80px;
  height:80px;
  border-radius:0;
  overflow:hidden;
  cursor:pointer;
  transition:.3s;
  border:1px solid var(--divider);
}

.thumb:hover{
  border-color:var(--accent-black);
}

.thumb img{width:100%;height:100%;object-fit:cover}

.progress{ width:100%; height:6px; background:var(--bg-cream); border-radius:0; overflow:hidden; margin:30px 0; border:none; clip-path:polygon(5% 0%, 100% 0%, 95% 100%, 0% 100%) }
.progress .bar{ height:100%; background:linear-gradient(90deg, var(--color-primary), var(--color-accent)); transition:width .6s ease; border-radius:0 }

.result{ margin:30px 0; border-radius:0; background:white; overflow:hidden; border:3px solid var(--color-primary); box-shadow:var(--shadow-soft); clip-path:polygon(0 0, 100% 2%, 100% 100%, 0 98%) }
.result-head{ padding:16px 24px; background:var(--color-primary); color:white; font-weight:700; font-size:13px; letter-spacing:1px; text-transform:uppercase }
/* Inline small action buttons */
.btn-inline{ border:1px solid transparent; background:transparent; color:var(--brand-1); padding:8px 12px; text-transform:uppercase; font-size:11px; letter-spacing:1px; cursor:pointer; transition:color .2s ease }
.btn-inline:hover{ color:var(--brand-3) }

.result textarea{
  width:100%;
  border:none;
  padding:20px;
  background:transparent;
  color:var(--text-dark);
  font-family:'Courier New',monospace;
  font-size:13px;
  line-height:1.8;
  resize:vertical;
  min-height:150px;
}

/* --- Task list (queue) --- */
#queueCard{ text-align:left; margin-left:auto; margin-right:auto }
#fileList{ margin:12px 0 }
#fileItems{ display:flex; flex-direction:column; gap:12px }

.file-item{
  display:grid;
  grid-template-columns:80px 1fr auto;
  grid-template-rows:auto 6px; /* progress bar height */
  gap:10px 16px;
  align-items:center;
  padding:12px;
  background:white;
  border:1px solid var(--divider);
  box-shadow:var(--shadow-soft);
}
.file-item:hover{ box-shadow:var(--shadow-med) }

.file-thumb,.file-icon{ grid-column:1/2 }
.file-thumb{ position:relative; display:inline-flex; width:80px; height:80px; align-items:center; justify-content:center; cursor:zoom-in; background:var(--bg-light); border:1px solid var(--divider) }
.file-thumb .thumb{ width:100%; height:100%; object-fit:cover; border:none }
.file-thumb .tooltip{ position:absolute; bottom:4px; left:4px; right:4px; font-size:11px; color:#fff; background:rgba(21,79,120,.78); padding:2px 4px; display:none }
.file-thumb:hover .tooltip{ display:block }
.file-icon{ font-size:28px }

.file-item .name{ grid-column:2/3; font-size:14px; color:var(--text-dark); white-space:nowrap; overflow:hidden; text-overflow:ellipsis }
.file-item .meta{ grid-column:3/4; display:flex; align-items:center; gap:8px; justify-content:flex-end }

.file-progress{ grid-column:1/4; height:6px; background:var(--bg-cream); border:none }
.file-progress .bar{ height:100%; background:linear-gradient(90deg, var(--color-primary), var(--color-accent)); transition:width .3s ease }

.status{ font-size:12px; color:var(--text-gray) }

/* Failed state styling */
.file-item[data-state^="Failed"] .name {
  color: #991b1b;
}

.file-item[data-state^="Failed"] .status {
  color: #dc2626;
  font-weight: 600;
}

.file-item[data-state^="Failed"] .file-progress .bar {
  background: #ef4444;
}

/* Icon-only button */
.icon-btn{ appearance:none; border:1px solid var(--divider); background:white; width:30px; height:30px; padding:0; display:inline-flex; align-items:center; justify-content:center; cursor:pointer; color:var(--color-secondary) }
.icon-btn:hover{ border-color:var(--color-secondary); background:var(--bg-light) }
.icon-btn.danger{ color:#b91c1c; border-color:#ef4444; background:white }
.icon-btn.danger:hover{ background:#fee2e2; border-color:#ef4444 }
.icon-btn svg{ width:16px; height:16px }

@media (max-width: 600px){
  .file-item{ grid-template-columns:60px 1fr auto }
  .file-thumb{ width:60px; height:60px }
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 420px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 20px;
  background: white;
  border-left: 4px solid #ef4444;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
  animation: slideIn 0.3s ease;
  pointer-events: all;
}

.toast.error {
  border-left-color: #ef4444;
}

.toast-icon {
  font-size: 24px;
  line-height: 1;
  flex-shrink: 0;
}

.toast-content {
  flex: 1;
  min-width: 0;
}

.toast-title {
  font-weight: 700;
  font-size: 14px;
  color: var(--color-secondary);
  margin: 0 0 6px 0;
  font-family: 'Montserrat', sans-serif;
}

.toast-message {
  font-size: 13px;
  color: var(--text-gray);
  line-height: 1.6;
  word-wrap: break-word;
}

.toast-message strong {
  color: var(--text-dark);
  font-weight: 600;
}

.toast-close {
  appearance: none;
  border: none;
  background: transparent;
  font-size: 24px;
  line-height: 1;
  color: var(--text-gray);
  cursor: pointer;
  padding: 0;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  transition: color 0.2s ease;
}

.toast-close:hover {
  color: var(--text-dark);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@media (max-width: 600px) {
  .toast-container {
    top: 10px;
    right: 10px;
    left: 10px;
    max-width: none;
  }
  
  .toast {
    padding: 14px 16px;
  }
  
  .toast-title {
    font-size: 13px;
  }
  
  .toast-message {
    font-size: 12px;
  }
}

/* 鍔熻兘鍖?*/
.features-section{ margin:120px 0 }

.section-title{ font-size:clamp(28px, 5.5vw, 56px); font-weight:900; margin:0 0 70px; text-align:center; color:var(--color-secondary); letter-spacing:clamp(-0.5px, -0.25vw, -2px); font-family:'Montserrat',sans-serif; position:relative }
.section-title::after{content:'';display:block;width:92px;height:4px;margin:16px auto 0;background:linear-gradient(90deg, var(--color-primary), var(--color-accent));clip-path:polygon(0 0, 100% 0, 92% 100%, 0 100%);opacity:.95}

.features{ display:grid; grid-template-columns:repeat(3,1fr); gap:40px }

.feature-card{ background:white; border-radius:0; padding:50px 40px; text-align:center; transition:.4s ease; box-shadow:var(--shadow-soft); position:relative; overflow:hidden; clip-path:polygon(0 0, 100% 5%, 95% 100%, 0 95%) }
.feature-card::before{ content:''; position:absolute; top:0; left:0; right:0; height:4px; background:linear-gradient(90deg, var(--color-primary), var(--color-accent)) }
.feature-card:hover{ box-shadow:0 16px 40px rgba(21,79,120,0.08); transform:translateY(-12px) }

.feature-emoji{ font-size:80px; margin-bottom:24px; display:block; transition:.4s ease }
.feature-card:hover .feature-emoji{ transform:scale(1.3) rotateZ(-15deg) }


.feature-card h3{ font-size:22px; font-weight:800; margin:0 0 12px; color:var(--color-secondary); letter-spacing:-.5px; font-family:'Montserrat',sans-serif }

.feature-card p{ font-size:15px; color:var(--text-gray); margin:0; line-height:1.8 }

/* 缁熻鍖?*/
.stats{ display:grid; grid-template-columns:repeat(4,1fr); gap:30px; margin:120px 0 }

.stat-card{ background:linear-gradient(135deg, white 0%, var(--bg-cream) 100%); border-radius:0; padding:50px 40px; text-align:center; transition:.4s ease; box-shadow:var(--shadow-soft); position:relative; clip-path:polygon(0 0, 100% 0, 90% 100%, 0 100%) }
.stat-card:hover{ box-shadow:var(--shadow-med); transform:translateY(-8px) }

.stat-number{ font-size:clamp(24px, 4.5vw, 48px); font-weight:900; margin:0 0 12px; color:var(--color-primary); letter-spacing:-1px; font-family:'Montserrat',sans-serif }

.stat-label{ font-size:13px; color:var(--text-gray); margin:0; text-transform:uppercase; letter-spacing:1.5px; font-weight:700 }

/* FAQ */
.faq-section{ margin:120px 0; max-width:900px; margin-left:auto; margin-right:auto }
.seo-links-section{ margin:120px auto 0; max-width:1100px; padding:42px 38px; background:linear-gradient(180deg, rgba(255,253,250,0.98), rgba(246,239,231,0.88)); border:1px solid var(--divider); box-shadow:var(--shadow-soft) }
.seo-links-intro{ max-width:780px; margin:-34px auto 34px; text-align:center; color:var(--text-gray); line-height:1.8; font-size:15px }
.seo-links-grid{ display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px }
.seo-link-chip{ display:flex; align-items:center; justify-content:center; min-height:58px; padding:14px 16px; text-align:center; text-decoration:none; color:var(--color-secondary); background:var(--bg-white); border:1px solid var(--divider); font-weight:700; line-height:1.4; transition:border-color .2s ease, transform .2s ease, box-shadow .2s ease, color .2s ease }
.seo-link-chip:hover{ border-color:var(--color-primary); color:var(--color-primary); box-shadow:var(--shadow-soft); transform:translateY(-1px) }
.seo-link-chip.active{ border-color:var(--color-primary); color:var(--color-primary); background:rgba(228,106,69,0.06) }

.accordion{ display:flex; flex-direction:column; gap:16px }

.accordion details{ background:white; border:none; border-radius:0; padding:28px; cursor:pointer; transition:.3s ease; box-shadow:var(--shadow-soft); clip-path:polygon(0 0, 100% 0, 95% 100%, 0 100%) }
.accordion details:hover{ box-shadow:var(--shadow-med); transform:translateY(-2px) }
.accordion details[open]{ background:linear-gradient(135deg, rgba(228,106,69,0.06), rgba(216,155,69,0.06)); box-shadow:0 8px 24px rgba(21,79,120,0.08) }

.accordion summary{ font-weight:700; font-size:16px; color:var(--color-secondary); user-select:none; display:flex; align-items:center; justify-content:space-between; cursor:pointer; transition:.3s ease; font-family:'Montserrat',sans-serif }

.accordion summary::-webkit-details-marker{display:none}

.accordion summary::after{ content:''; width:24px; height:24px; border:3px solid var(--color-primary); border-radius:0; position:relative; transition:.3s ease; display:flex; align-items:center; justify-content:center; flex-shrink:0; clip-path:polygon(0 0, 100% 0, 85% 100%, 0 100%) }
.accordion summary::after::before{ content:'+'; position:absolute; color:var(--color-primary); font-weight:bold; font-size:16px }
.accordion details[open] summary::after{ background:var(--color-primary); color:white; transform:rotateZ(45deg) }
.accordion details[open] summary::after::before{ color:white }

.accordion p{ margin:20px 0 0; font-size:15px; color:var(--text-gray); line-height:1.8 }

/* 鎻掑浘鍗犱綅锛氭楠?瀵规瘮/杈圭晫/娴佺▼ */
.steps-visual{ margin:120px 0 }
.steps-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:30px }
.step-card{ background:linear-gradient(180deg, rgba(255,255,255,.99) 0%, rgba(246,239,231,.93) 100%); box-shadow:var(--shadow-soft); padding:28px; clip-path:polygon(0 0, 100% 5%, 95% 100%, 0 95%); border:1px solid rgba(21,79,120,.10); position:relative }
.step-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg, var(--color-secondary), var(--color-accent))}
.step-figure{ position:relative; background:var(--bg-light); border:1px dashed var(--divider); height:200px; margin:0 0 14px; display:flex; align-items:center; justify-content:center; color:var(--text-gray); font-size:12px; letter-spacing:.5px }
.step-figure::after{ content:'Illustration placeholder'; opacity:.8 }
.step-figure.has-illustration::after{ content:''; display:none }
.step-title{ font-weight:800; color:var(--color-secondary); margin:0 0 6px; font-family:'Montserrat',sans-serif; font-size:16px; letter-spacing:-.2px }
.step-desc{ margin:0; color:var(--text-gray); font-size:14px; line-height:1.7 }

.before-after{ margin:120px 0 }
.before-after-grid{ display:grid; grid-template-columns:1fr 1fr; gap:30px; align-items:stretch }
.ba-pane{ background:linear-gradient(180deg, rgba(255,255,255,.995) 0%, rgba(252,250,246,.965) 100%); border:1px solid rgba(21,79,120,.10); box-shadow:var(--shadow-soft); padding:0; overflow:hidden }
.ba-head{ padding:13px 18px; background:linear-gradient(90deg, rgba(21,79,120,.10) 0%, rgba(239,212,138,.26) 100%); color:var(--color-secondary); font-size:12px; letter-spacing:1px; text-transform:uppercase; font-weight:800; border-bottom:1px solid rgba(21,79,120,.09) }
.ba-canvas{ height:360px; background:var(--bg-light); border-top:1px solid var(--divider) }
.ba-text{ padding:20px 24px; font-size:13px; color:var(--text-dark); line-height:1.7; white-space:pre-wrap; height:360px; overflow:auto; border-top:1px solid var(--divider); background:var(--bg-light) }

.edge-cases{ margin:120px 0 }
.edge-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:30px }
.edge-card{ background:linear-gradient(180deg, rgba(255,255,255,.995) 0%, rgba(246,239,231,.92) 100%); border:1px solid rgba(21,79,120,.10); box-shadow:var(--shadow-soft); padding:24px; display:flex; flex-direction:column; gap:10px; position:relative; overflow:hidden }
.edge-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg, var(--color-accent), var(--color-primary))}
.edge-fig{ height:140px; background:var(--bg-light); border:1px dashed var(--divider); display:flex; align-items:center; justify-content:center; color:var(--text-gray); font-size:12px }
.edge-title{ margin:0; font-weight:800; color:var(--color-secondary); font-family:'Montserrat',sans-serif; letter-spacing:-.2px }
.edge-tip{ margin:0; color:var(--text-gray); font-size:14px; line-height:1.7 }

.flow-strip{ margin:120px 0 }
.flow-rail{ display:flex; align-items:center; justify-content:center; gap:16px; flex-wrap:wrap; padding:20px; background:linear-gradient(135deg, white 0%, var(--bg-cream) 100%); border:1px solid var(--divider); box-shadow:var(--shadow-soft) }
.flow-node{ padding:12px 36px; border:2px solid var(--color-secondary); color:var(--color-secondary); font-weight:800; font-size:12px; letter-spacing:1px; text-transform:uppercase; background:white; clip-path:polygon(0 0, 100% 0, 92% 100%, 0 100%); display:flex; align-items:center; justify-content:center; line-height:1; transform:translateY(0.5px) }
.flow-arrow{ width:22px; height:2px; background:var(--color-primary); position:relative }
.flow-arrow::after{ content:''; position:absolute; right:-2px; top:-5px; width:0; height:0; border-left:6px solid var(--color-primary); border-top:6px solid transparent; border-bottom:6px solid transparent }

.content-shell{max-width:1040px;margin:0 auto}
.page-kicker{display:inline-flex;align-items:center;justify-content:center;padding:8px 14px;margin:0 auto 18px;background:rgba(228,106,69,.10);color:var(--color-primary);font-size:11px;font-weight:800;letter-spacing:1.4px;text-transform:uppercase;border:1px solid rgba(228,106,69,.18)}
.page-meta{margin:16px auto 0;max-width:760px;color:var(--text-gray);font-size:13px;letter-spacing:.6px;text-transform:uppercase}
.content-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin:56px 0 0}
.content-card{background:linear-gradient(180deg, rgba(255,255,255,.995) 0%, rgba(246,239,231,.90) 100%);border:1px solid rgba(21,79,120,.10);box-shadow:var(--shadow-soft);padding:30px;position:relative;overflow:hidden}
.content-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--color-primary),var(--color-accent))}
.content-card h2,
.content-card h3{margin:0 0 12px;color:var(--color-secondary);font-family:'Montserrat',sans-serif;letter-spacing:-.3px}
.content-card p{margin:0;color:var(--text-gray);font-size:15px;line-height:1.85}
.content-stack{display:flex;flex-direction:column;gap:28px;margin:60px 0 0}
.content-stack .content-card p + p{margin-top:14px}
.page-list{margin:16px 0 0;padding-left:20px;color:var(--text-gray)}
.page-list li{margin:10px 0;line-height:1.8}
.page-link-list{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin:20px 0 0}
.page-link-list a{display:inline-flex;align-items:center;justify-content:center;padding:10px 14px;text-decoration:none;color:var(--color-secondary);border:1px solid var(--divider);background:var(--bg-light);font-size:12px;font-weight:700;letter-spacing:.8px;text-transform:uppercase}
.page-link-list a[aria-current="page"]{border-color:var(--color-primary);color:var(--color-primary);background:rgba(228,106,69,.06)}
.page-link-list a:hover{border-color:var(--color-primary);color:var(--color-primary)}
.content-split{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.9fr);gap:28px;align-items:start;margin:60px 0 0}
.page-note{margin:18px 0 0;padding:16px 18px;background:rgba(21,79,120,.05);border-left:4px solid var(--color-secondary);color:var(--text-gray);font-size:14px;line-height:1.8}
.page-cta{margin:70px auto 0;max-width:820px;padding:34px 30px;text-align:center;background:linear-gradient(135deg, rgba(255,255,255,.995) 0%, rgba(246,239,231,.92) 100%);border:1px solid rgba(21,79,120,.10);box-shadow:var(--shadow-soft)}
.page-cta h2{margin:0 0 12px;color:var(--color-secondary);font-family:'Montserrat',sans-serif}
.page-cta p{margin:0 auto 20px;max-width:640px;color:var(--text-gray);line-height:1.8}
.page-cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}

/* 搴曢儴 */
.site-footer{ text-align:center; padding:60px 60px; color:var(--text-gray); font-size:13px; border-top:3px solid var(--color-primary); margin-top:120px; background:var(--bg-cream); letter-spacing:.5px }

/* 鍝嶅簲寮?*/
@media (max-width: 1000px){
  main{padding:60px 40px}
  .section-title{margin-bottom:50px}
  .features{grid-template-columns:repeat(2,1fr);gap:30px}
  .stats{grid-template-columns:repeat(2,1fr);gap:24px}
  .seo-links-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .seo-links-intro{margin:-26px auto 28px}
  .steps-grid{grid-template-columns:repeat(2,1fr)}
  .before-after-grid{grid-template-columns:1fr}
  .content-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .content-split{grid-template-columns:1fr}
}

@media (max-width: 768px){
  main{margin-top:70px;padding:50px 24px}
  .nav{display:none}
  .upload-card{padding:36px 28px}
  .upload-icon{font-size:80px}
  .features{grid-template-columns:1fr;gap:24px}
  .stats{grid-template-columns:repeat(2,1fr);gap:20px}
  .section-title{margin-bottom:40px}
  .steps-grid{grid-template-columns:1fr}
  .edge-grid{grid-template-columns:1fr}
  .pill-selector{display:flex;width:100%;padding:6px;gap:8px}
  .pill-button{flex:1;justify-content:center;padding:8px 12px;font-size:12px}
  .pill-button .label{display:none}
  .mode-info h3{flex-direction:column;align-items:flex-start;gap:12px}
  .mode-stats{gap:24px}
  .content-grid{grid-template-columns:1fr}
  .content-card{padding:26px 22px}
  .page-cta{padding:28px 22px}
}

@media (max-width: 480px){
  main{padding:30px 16px}
  .hero-buttons{gap:12px}
  .btn-hero{padding:12px 28px;font-size:12px}
  .upload-card{padding:32px 20px;margin:30px auto}
  .upload-icon{font-size:72px}
  .upload-actions{gap:12px}
  .features{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr;gap:16px}
  .section-title{margin-bottom:30px}
  .seo-links-section{padding:28px 20px}
  .seo-links-grid{grid-template-columns:1fr}
  .seo-links-intro{margin:-16px auto 22px;font-size:14px}
  .accordion details{padding:20px}
  .accordion summary{font-size:14px}
  /* fallback margins for small screens when flex gap is unsupported */
  .no-flex-gap .hero-buttons > * + *{ margin-left:12px }
  .no-flex-gap .upload-actions > * + *{ margin-left:12px }
  .flow-rail{gap:12px}
  .pill-selector{padding:4px;gap:6px}
  .pill-button{padding:6px 10px;font-size:11px}
  .pill-button .icon{font-size:16px}
  .pill-button .badge{padding:1px 6px;font-size:9px}
  .mode-info{padding:20px}
  .mode-info h3{font-size:18px}
  .mode-stats{font-size:13px;gap:20px}
}
 
@media (min-width: 900px){
  /* 5 鍒楃缉鐣ュ浘锛堟瘡鍒椻墺140px锛夛紝gap 涓?16px锛屽乏鍙?padding 鍏?120px */
  .upload-card{width:100%;max-width:calc(5 * 140px + 4 * 16px + 120px)}
  #queueCard{width:100%;max-width:calc(5 * 140px + 4 * 16px + 120px)}
  .preview{grid-template-columns:repeat(5,minmax(140px,1fr));justify-content:center}
}
 
 /* 鑿滃崟鎸夐挳锛堟闈㈤殣钘忥級 */
 .menu-toggle{display:none;background:transparent;border:1px solid var(--accent-black);color:var(--accent-black);padding:8px 12px;text-transform:uppercase;letter-spacing:2px;font-size:11px;cursor:pointer}
 /* 绉诲姩瀵艰埅榛樿闅愯棌锛堟闈㈢涓嶆樉绀猴級 */
 .mobile-nav{display:none}
 
 /* 鏆楄壊妯″紡 */
 @media (prefers-color-scheme: dark){
   :root{
     --bg-white: #fbf8f3;
     --bg-light: #fffdfa;
     --bg-dark: #21415b;
     --text-dark: #213648;
     --text-light: #ffffff;
     --text-gray: #6f7f92;
    --accent-black: #213648;
    --accent-white: #ffffff;
    --divider: #dde5ec;
    --divider-dark: #9aaab8;
    --brand-1: #7c8dff;
    --brand-2: #22d3ee;
    --brand-3: #b794f4;
   }
   /* Keep illustration/demo surfaces light even in OS dark mode. */
   .step-figure,
   .ba-canvas,
   .ba-text,
   .edge-fig,
   .flow-rail,
   .flow-node,
   .mode-info,
   .pill-selector{
     color:#334155;
   }
   .step-figure,
   .ba-canvas,
   .ba-text,
   .edge-fig{
     background:#f8fafc;
     border-color:#d7dee8;
   }
   .ba-pane,
   .step-card,
   .edge-card,
   .mode-info{
     border-color:rgba(21,79,120,.11);
   }
   .ba-text{
     color:#334155;
   }
   .flow-rail{
     background:linear-gradient(135deg, #ffffff 0%, #f5f1ed 100%);
     border-color:#d7dee8;
   }
   .flow-node{
     background:#ffffff;
     color:var(--color-secondary);
   }
   .pill-selector{
     background:linear-gradient(135deg, rgba(255,255,255,.99) 0%, rgba(239,212,138,.14) 100%);
     border-color:rgba(21,79,120,.12);
   }
   .mode-info{
     background:linear-gradient(180deg, rgba(255,255,255,.995) 0%, rgba(246,239,231,.94) 100%);
   }
 }
/* 鍚堝苟鏀寔淇℃伅涓哄崟琛岋紝闄嶄綆鍗犵敤 */
.upload-support, .upload-size{ display:inline; margin:0; font-size:11px; color:var(--text-gray); line-height:1.5 }
.upload-note{ margin:8px 0 0; font-size:12px; color:var(--text-gray); line-height:1.5 }
.upload-support::after{ content:" \00B7 "; color:var(--text-gray) }

/* 妗岄潰闅愯棌澶х澶村浘鏍囷紝绉诲姩绔粛鏄剧ず甯姪寮曞 */
@media (min-width: 768px){
  .upload-icon{ display:none }
}

/* 妗岄潰绔‘淇濆唴瀹瑰彲鐐瑰嚮 */
@media (min-width: 768px){
  .upload-card > *{ position:relative; z-index:1 }
}

/* 妯″紡閫夋嫨鍣?- 鏂规3鑽父寮?*/
.mode-selector-wrap{
  margin-bottom:12px;
  text-align:center;
}

.pill-selector{
  display:inline-flex;
  background:linear-gradient(135deg, rgba(255,255,255,.99) 0%, rgba(239,212,138,.14) 100%);
  border:1px solid rgba(21,79,120,.12);
  box-shadow:0 10px 24px rgba(21,79,120,.06);
  padding:5px;
  gap:4px;
  margin-bottom:0; /* avoid collapsing adding extra gap */
}

@media (min-width: 1280px){
  .mode-selector-wrap{ margin-bottom:16px }
}

.pill-button{
  background:transparent;
  border:none;
  padding:10px 24px;
  cursor:pointer;
  font-size:13px;
  font-weight:600;
  color:var(--text-gray);
  transition:all 0.3s ease;
  display:flex;
  align-items:center;
  gap:6px;
  letter-spacing:0.5px;
  text-transform:uppercase;
  font-family:inherit;
  clip-path:polygon(0 0, 100% 0, 93% 100%, 0 100%);
}

.pill-button .icon{
  font-size:16px;
}

.pill-button .label{
  letter-spacing:0.5px;
}

.pill-button .badge{
  background:var(--color-light);
  color:var(--accent-black);
  font-size:9px;
  padding:3px 7px;
  border-radius:2px;
  font-weight:700;
  letter-spacing:0.3px;
}

.pill-button:hover{
  color:var(--color-primary);
}

.pill-button.active{
  background:var(--color-secondary);
  color:white;
  box-shadow:var(--shadow-soft);
}

.pill-button.active .badge{
  background:var(--color-accent);
  color:white;
}

/* 妯″紡鍗＄墖瀹瑰櫒 */
.mode-card{
  display:none;
}

.mode-card.active{
  display:block;
  animation:fadeInUp 0.4s ease;
  margin-top:0; /* ensure no extra gap above the card */
}

@keyframes fadeInUp{
  from{opacity:0;transform:translateY(20px)}
  to{opacity:1;transform:translateY(0)}
}

/* 妯″紡淇℃伅 */
.mode-info{
  background:linear-gradient(180deg, rgba(255,255,255,.995) 0%, rgba(246,239,231,.94) 100%);
  border:1px solid rgba(21,79,120,.10);
  border-left:4px solid var(--color-primary);
  box-shadow:0 12px 28px rgba(21,79,120,.06);
  padding:14px 18px;
  margin-bottom:16px;
  text-align:left;
}

.mode-info h3{
  font-size:16px;
  font-weight:700;
  color:var(--text-dark);
  margin:0 0 6px; /* remove default top margin */
  display:flex;
  align-items:center;
  gap:8px;
  justify-content:space-between;
  line-height:1; /* normalize line box to remove extra top whitespace */
  padding:4px 0; /* symmetric vertical padding for visual balance */
}

.mode-stats{
  display:flex;
  gap:20px;
  font-size:13px;
  font-weight:600;
  color:var(--text-gray);
}

.mode-info p{
  color:var(--text-gray);
  font-size:13px;
  line-height:1.4;
  margin:0;
}

/* OCR Lightbox: layout + simple download buttons */
    #ocrLightbox .lightbox-content{padding:16px;max-width:1000px;background:var(--bg-white);color:var(--text-dark);border:1px solid var(--divider)}
    /* Position close inside the content, top-right */
    #ocrLightbox .lightbox-content{ position:relative }
    #ocrLightbox .lightbox-close{ position:absolute; top:8px; right:8px }
    #ocrDialogTitle{margin:0 0 6px;font-weight:700;color:var(--text-dark)}
    #ocrDialogMeta{margin:0 0 12px;color:var(--text-gray);font-size:12px}
    #ocrDialogToolbar{display:flex;align-items:center;gap:8px;margin:0 0 12px}
    #ocrDialogToolbar .dl-group{display:flex;align-items:center;gap:8px}
    #ocrDialogToolbar .dl-group .label{font-size:12px;color:var(--text-gray)}
    #ocrDialogToolbar .dl-group .segmented{display:flex;gap:8px}
    #ocrDialogToolbar .dl-group .segmented a{
      -webkit-appearance:none;-moz-appearance:none;appearance:none;
      border:1px solid var(--divider);
      background:white;
      color:var(--color-secondary);
      padding:6px 10px;
      font-size:11px;
      text-decoration:none;
      text-transform:uppercase;
      letter-spacing:.5px;
      cursor:pointer;
      line-height:1;
    }
    #ocrDialogToolbar .dl-group .segmented a:hover{background:var(--bg-light);border-color:var(--color-secondary)}
    #ocrDialogText{white-space:pre-wrap;background:white;border:1px solid var(--divider);padding:12px;max-width:85vw;max-height:70vh;overflow:auto}