/* ============================================================
   pdf9.online — Design System (from pdf9 design canvas)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Geist:wght@300;400;500;600;700&family=Geist+Mono:wght@400;500&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --accent:      #3B82F6;
  --accent-hi:   #60A5FA;
  --accent-lo:   #2563EB;
  --accent-glow: rgba(59,130,246,0.35);

  --bg:           #F6F7FB;
  --bg-2:         #EEF0F6;
  --surface:      rgba(255,255,255,0.72);
  --surface-solid:#FFFFFF;
  --line:         rgba(15,23,42,0.08);
  --line-strong:  rgba(15,23,42,0.14);
  --ink:          #0B1020;
  --ink-2:        #2A2F45;
  --ink-3:        #5B6178;
  --ink-4:        #8A90A6;
  --ink-5:        #B6BAC9;

  --glass-bg:        rgba(255,255,255,0.55);
  --glass-bg-strong: rgba(255,255,255,0.78);
  --glass-border:    rgba(255,255,255,0.7);
  --glass-shadow:    0 1px 0 rgba(255,255,255,.6) inset, 0 12px 32px -16px rgba(15,23,42,0.18), 0 2px 8px rgba(15,23,42,0.06);

  --c-merge:    #3B82F6;
  --c-split:    #8B5CF6;
  --c-compress: #06B6D4;
  --c-convert:  #F59E0B;
  --c-edit:     #10B981;
  --c-sign:     #EC4899;
  --c-protect:  #64748B;
  --c-ocr:      #EF4444;
  --c-scan:     #F97316;
  --c-repair:   #84CC16;

  --r-xs: 6px; --r-sm: 10px; --r-md: 14px; --r-lg: 20px; --r-xl: 28px;
  --font-sans: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

[data-theme="dark"] {
  --bg:           #07090F;
  --bg-2:         #0B0E16;
  --surface:      rgba(20,24,35,0.7);
  --surface-solid:#11131C;
  --line:         rgba(255,255,255,0.08);
  --line-strong:  rgba(255,255,255,0.14);
  --ink:          #F4F5FA;
  --ink-2:        #D6D8E2;
  --ink-3:        #9097AC;
  --ink-4:        #6B7187;
  --ink-5:        #454A5E;
  --glass-bg:        rgba(22,26,38,0.55);
  --glass-bg-strong: rgba(22,26,38,0.82);
  --glass-border:    rgba(255,255,255,0.08);
  --glass-shadow:    0 1px 0 rgba(255,255,255,.04) inset, 0 16px 40px -20px rgba(0,0,0,0.6), 0 2px 8px rgba(0,0,0,0.4);
}

html, body {
  height: 100%;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background .2s, color .2s;
}

body::before {
  content: '';
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(900px 500px at 12% -8%,  rgba(59,130,246,0.15),  transparent 60%),
    radial-gradient(700px 500px at 100% 0%,  rgba(139,92,246,0.10),  transparent 60%),
    radial-gradient(800px 600px at 50% 110%, rgba(6,182,212,0.08),   transparent 60%);
}
[data-theme="dark"] body::before {
  background:
    radial-gradient(900px 500px at 12% -8%,  rgba(59,130,246,0.22), transparent 60%),
    radial-gradient(700px 500px at 100% 0%,  rgba(139,92,246,0.18), transparent 60%),
    radial-gradient(800px 600px at 50% 110%, rgba(6,182,212,0.14),  transparent 60%);
}

#app { position: relative; z-index: 1; min-height: 100vh; }

.glass {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  backdrop-filter: blur(20px) saturate(140%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}
.glass-strong {
  background: var(--glass-bg-strong);
  -webkit-backdrop-filter: blur(28px) saturate(160%);
  backdrop-filter: blur(28px) saturate(160%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

/* ── Top Nav ── */
#topnav {
  position: fixed; top: 14px; left: 14px; right: 14px; height: 56px;
  border-radius: 999px; z-index: 100;
  display: flex; align-items: center; padding: 0 10px 0 18px; gap: 8px;
}
.nav-brand {
  display: flex; align-items: center; gap: 8px;
  background: transparent; border: 0; cursor: pointer; padding: 0;
  color: var(--ink); font: 600 15px/1 var(--font-sans); letter-spacing: -0.02em;
}
.nav-sep { height: 18px; width: 1px; background: var(--line); margin: 0 4px; flex-shrink:0; }
.nav-item {
  background: transparent; border: 0; cursor: pointer;
  padding: 6px 12px; border-radius: 8px;
  color: var(--ink-3); font: 500 13px/1 var(--font-sans);
  transition: color .12s, background .12s;
}
.nav-item:hover { color: var(--ink); background: var(--glass-bg); }
.nav-item.is-active { color: var(--ink); font-weight: 600; }
.nav-spacer { flex: 1; }
.nav-theme {
  width: 36px; height: 36px; border-radius: 999px; border: 0;
  background: transparent; cursor: pointer; color: var(--ink-3);
  display: flex; align-items: center; justify-content: center;
  transition: color .12s;
}
.nav-theme:hover { color: var(--ink); }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 500 14px/1 var(--font-sans); letter-spacing: -0.01em;
  border-radius: 999px; padding: 0 18px; height: 40px;
  border: 1px solid transparent; cursor: pointer;
  transition: transform .12s, box-shadow .15s, background .15s, border-color .15s, color .15s;
  white-space: nowrap; user-select: none; text-decoration: none;
}
.btn:active { transform: translateY(0.5px); }
.btn-primary {
  background: linear-gradient(180deg, var(--accent-hi), var(--accent-lo));
  color: white;
  box-shadow: 0 1px 0 rgba(255,255,255,0.4) inset, 0 -1px 0 rgba(0,0,0,.15) inset,
              0 8px 22px -8px var(--accent-glow), 0 2px 6px rgba(37,99,235,0.25);
}
.btn-primary:hover { box-shadow: 0 1px 0 rgba(255,255,255,0.5) inset, 0 -1px 0 rgba(0,0,0,.15) inset, 0 12px 30px -8px var(--accent-glow), 0 4px 10px rgba(37,99,235,0.3); }
.btn-ghost { background: transparent; color: var(--ink-2); border-color: var(--line-strong); }
.btn-ghost:hover { background: var(--glass-bg); color: var(--ink); }
.btn-glass {
  background: var(--glass-bg-strong); color: var(--ink); border-color: var(--glass-border);
  -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
}
.btn-glass:hover { background: var(--glass-bg); }
.btn-sm { height: 32px; padding: 0 12px; font-size: 13px; }
.btn-lg { height: 48px; padding: 0 24px; font-size: 15px; }
.btn-xl { height: 56px; padding: 0 32px; font-size: 16px; width: 100%; }
.shine { position: relative; overflow: hidden; }
.shine::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(110deg, transparent 30%, rgba(255,255,255,0.3) 50%, transparent 70%);
  transform: translateX(-100%); transition: transform .6s ease;
}
.shine:hover::after { transform: translateX(100%); }

/* ── Pill ── */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  font: 500 12px/1 var(--font-sans); padding: 6px 10px; border-radius: 999px;
  background: var(--glass-bg); border: 1px solid var(--glass-border); color: var(--ink-2);
}
.pill-pro {
  background: linear-gradient(135deg, #0B1020, #1F2742);
  color: #E8EAF6; border: 1px solid rgba(255,255,255,0.12);
}
[data-theme="dark"] .pill-pro { background: linear-gradient(135deg, #E8EAF6, #B3B9D6); color: #0B1020; }

/* ── Card ── */
.card {
  background: var(--glass-bg); border: 1px solid var(--line);
  border-radius: var(--r-md); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
}

/* ── Inputs ── */
.input {
  width: 100%; height: 44px; padding: 0 14px;
  background: var(--glass-bg-strong); border: 1px solid var(--line-strong);
  border-radius: var(--r-sm); font: 400 14px/1 var(--font-sans); color: var(--ink);
  transition: border-color .15s, box-shadow .15s; outline: none;
}
.input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-glow); }
.input::placeholder { color: var(--ink-4); }
textarea.input { height: auto; min-height: 100px; padding: 12px 14px; resize: vertical; line-height: 1.5; }
.form-select {
  width:100%; height:44px; padding:0 14px;
  background:var(--glass-bg-strong); border:1px solid var(--line-strong);
  border-radius:var(--r-sm); font:400 14px var(--font-sans); color:var(--ink);
  outline:none; cursor:pointer; transition:border-color .15s, box-shadow .15s;
  -webkit-appearance:none; appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238A90A6' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 14px center;
}
.form-select:focus { border-color:var(--accent); box-shadow:0 0 0 4px var(--accent-glow); }

/* ── Typography ── */
.h1 { font: 600 56px/1.05 var(--font-sans); letter-spacing: -0.035em; }
.h2 { font: 600 40px/1.10 var(--font-sans); letter-spacing: -0.030em; }
.h3 { font: 600 28px/1.15 var(--font-sans); letter-spacing: -0.022em; }
.h4 { font: 600 20px/1.20 var(--font-sans); letter-spacing: -0.015em; }
.muted { color: var(--ink-3); }
.tiny  { font-size: 12px; color: var(--ink-3); }
.mono  { font-family: var(--font-mono); }
.hr { height: 1px; background: var(--line); border: 0; }

/* ── Live dot ── */
@keyframes liveDot { 0%,100%{opacity:.55;transform:scale(1)} 50%{opacity:1;transform:scale(1.15)} }
.live-dot { width:6px;height:6px;border-radius:999px;background:#10B981;animation:liveDot 1.4s ease-in-out infinite;display:inline-block;vertical-align:middle; }

/* ── Drop zone ── */
@keyframes dropPulse { 0%,100%{box-shadow:0 0 0 0 var(--accent-glow)} 50%{box-shadow:0 0 0 16px rgba(59,130,246,0)} }
.drop-zone {
  border: 1.5px dashed var(--line-strong); border-radius: var(--r-lg);
  background: radial-gradient(600px 200px at 50% 0%,rgba(59,130,246,0.06),transparent 60%), var(--glass-bg);
  -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
  transition: border-color .15s, background .15s;
  cursor: pointer; position: relative; overflow: hidden;
}
.drop-zone.is-active {
  border-color: var(--accent);
  background: radial-gradient(600px 240px at 50% 0%,rgba(59,130,246,0.16),transparent 60%), var(--glass-bg);
  animation: dropPulse 1.5s ease-out infinite;
}
.drop-zone input[type="file"] { position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%;z-index:2; }
.drop-inner { display:flex;flex-direction:column;align-items:center;gap:14px;padding:40px 24px;text-align:center;pointer-events:none; }
.drop-icon { width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center; }
.drop-title { font:600 18px/1 var(--font-sans);color:var(--ink);letter-spacing:-.015em; }
.drop-sub { font:400 13px/1 var(--font-sans);color:var(--ink-3);margin-top:4px; }
.drop-pills { display:flex;gap:8px;justify-content:center;flex-wrap:wrap; }
.drop-filenames { padding:12px 16px;font:500 13px/1.5 var(--font-sans);color:var(--ink-2);display:none; }
.drop-filenames.visible { display:block; }

/* ── Progress ring ── */
.ring-track { stroke: var(--line); }
.ring-fill { stroke:var(--accent);transition:stroke-dashoffset .3s ease;filter:drop-shadow(0 0 6px var(--accent-glow)); }

/* ── Views ── */
.view { display: none; }
.view.is-active { display: block; }

/* ── Landing ── */
#view-landing { padding-top: 84px; }
.hero { padding: 60px 80px 50px; text-align: center; max-width: 1100px; margin: 0 auto; }
.hero-pill { margin-bottom: 22px; }
.hero .h1 { margin-bottom: 18px; }
.hero-gradient {
  background: linear-gradient(90deg, #60A5FA, #8B5CF6, #06B6D4);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { font:400 18px/1.5 var(--font-sans);color:var(--ink-3);max-width:620px;margin:0 auto 32px; }
.hero-ctas { display:flex;gap:10px;justify-content:center;margin-bottom:14px;flex-wrap:wrap; }
.hero-trust { display:flex;gap:18px;justify-content:center;font:400 12px var(--font-sans);color:var(--ink-4);flex-wrap:wrap;margin-top:18px; }
.hero-trust span { display:inline-flex;align-items:center;gap:5px; }

.section-wrap { padding: 20px 80px 60px; max-width: 1240px; margin: 0 auto; }
.section-head { display:flex;align-items:baseline;justify-content:space-between;margin-bottom:24px; }
.tools-grid-4 { display:grid;grid-template-columns:repeat(4,1fr);gap:14px; }
.tools-grid-6 { display:grid;grid-template-columns:repeat(6,1fr);gap:12px; }

/* ── Tool Card ── */
.tool-card {
  background: var(--glass-bg); border-radius: var(--r-md); padding: 18px;
  border: 1px solid var(--line); cursor: pointer;
  display: flex; flex-direction: column; gap: 12px; text-align: left;
  transition: transform .18s ease, box-shadow .18s ease;
  -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
}
.tool-card:hover { transform: translateY(-2px); box-shadow: 0 12px 32px -16px rgba(0,0,0,.18); }
.tool-card-head { display:flex;align-items:center;justify-content:space-between; }
.tool-icon { width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center; }
.tool-icon.sm { width:32px;height:32px; }
.tool-badges { display:flex;gap:4px; }
.tool-label { font:600 14px/1.2 var(--font-sans);letter-spacing:-.01em;color:var(--ink); }
.tool-desc { font:400 12.5px/1.4 var(--font-sans);color:var(--ink-3);margin-top:4px; }

/* ── Differentiators ── */
.diff-grid { display:grid;grid-template-columns:repeat(4,1fr);gap:14px;padding:40px 80px 80px;max-width:1240px;margin:0 auto; }
.diff-card { padding:22px;border-radius:16px; }
.diff-icon { width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:14px; }

/* ── Tools view ── */
#view-tools { padding-top: 84px; }
.tools-view-wrap { padding:40px 80px 60px;max-width:1240px;margin:0 auto; }
.tools-search-row { display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:28px; }
.tools-search-bar {
  background:var(--glass-bg-strong);border:1px solid var(--line-strong);border-radius:999px;
  display:flex;align-items:center;gap:8px;padding:0 16px;height:44px;
}
.tools-search-bar input { background:transparent;border:0;outline:0;font:400 13px var(--font-sans);color:var(--ink);width:220px; }
.tools-search-bar input::placeholder { color:var(--ink-4); }
.category-label { font:500 11px var(--font-mono);text-transform:uppercase;letter-spacing:.08em;color:var(--ink-4);margin-bottom:14px; }
.category-section { margin-bottom:36px; }

/* ── Tool page ── */
#view-tool { padding-top: 84px; }
.tool-page-wrap { padding:20px 60px 60px;max-width:1240px;margin:0 auto; }
.tool-page-header { display:flex;align-items:center;gap:14px;margin-bottom:28px;flex-wrap:wrap; }
.tool-page-icon { width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0; }
.tool-page-meta { flex:1; }
.tool-page-title { font:600 22px/1 var(--font-sans);letter-spacing:-.02em;color:var(--ink); }
.tool-page-desc { font:400 13px var(--font-sans);color:var(--ink-3);margin-top:4px; }
.tool-page-pills { display:flex;gap:8px;flex-wrap:wrap; }
.tool-page-body { display:grid;grid-template-columns:1.1fr 1fr;gap:24px; }
.tool-page-left,.tool-page-right { display:flex;flex-direction:column;gap:16px; }

.form-section { padding:24px;border-radius:18px; }
.form-section .h4 { margin-bottom:18px; }
.form-group { display:flex;flex-direction:column;gap:6px;margin-bottom:14px; }
.form-group:last-child { margin-bottom:0; }
.form-label { font:500 12px var(--font-sans);color:var(--ink-3); }

/* Radio options */
.radio-opts { display:flex;flex-direction:column;gap:8px; }
.radio-opt {
  display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:12px;
  cursor:pointer;border:1px solid var(--line);background:var(--glass-bg);transition:.15s;
}
.radio-opt:hover { border-color:var(--line-strong); }
.radio-opt.is-active { border-color:var(--accent);background:rgba(59,130,246,0.08); }
.radio-dot { width:18px;height:18px;border-radius:999px;border:2px solid var(--line-strong);flex-shrink:0;position:relative; }
.radio-opt.is-active .radio-dot { border-color:var(--accent); }
.radio-dot::after { content:'';width:8px;height:8px;border-radius:999px;background:var(--accent);position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);display:none; }
.radio-opt.is-active .radio-dot::after { display:block; }
.radio-opt-right { margin-left:auto;text-align:right; }

/* Toggle switch */
.toggle-row { display:flex;align-items:center;gap:10px;padding:10px 0;cursor:pointer;border-bottom:1px solid var(--line); }
.toggle-row:last-child { border-bottom:0; }
.toggle { width:32px;height:18px;border-radius:999px;position:relative;flex-shrink:0;transition:background .15s;background:var(--line-strong); }
.toggle.on { background:var(--accent); }
.toggle::after { content:'';width:14px;height:14px;border-radius:999px;background:white;position:absolute;top:2px;left:2px;transition:left .15s; }
.toggle.on::after { left:16px; }
.toggle-label { font:500 13px var(--font-sans);color:var(--ink);flex:1; }

/* ── Processing view ── */
#view-processing { padding-top:84px; }
#view-processing.is-active { display:flex;align-items:center;justify-content:center;min-height:100vh; }
.processing-card { width:720px;padding:44px;border-radius:28px;text-align:center;margin:0 auto; }
.processing-steps { display:flex;flex-direction:column;gap:10px;text-align:left;margin-top:24px; }
.step-row {
  display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:10px;
  border:1px solid var(--line);background:var(--glass-bg);
}
.step-row.is-active { background:rgba(59,130,246,0.08);border-color:rgba(59,130,246,0.2); }
.step-dot { width:18px;height:18px;border-radius:999px;display:flex;align-items:center;justify-content:center;flex-shrink:0; }
.step-label { font:500 13px var(--font-sans); }
.step-mono { margin-left:auto;font:400 11px var(--font-mono);color:var(--ink-4); }

/* Progress bar fallback */
.progress-bar { height:4px;background:var(--line);border-radius:2px;overflow:hidden;margin:16px 0; }
.progress-fill { height:100%;background:var(--accent);border-radius:2px;transition:width .3s; }

/* ── Success view ── */
#view-success { padding-top:84px; }
.success-wrap { padding:40px 60px 60px;max-width:1100px;margin:0 auto; }
.success-card { padding:36px;border-radius:28px;text-align:center;position:relative;overflow:hidden; }
.success-glow { position:absolute;inset:0;background:radial-gradient(600px 200px at 50% 0%,rgba(16,185,129,0.18),transparent 60%);pointer-events:none; }
.success-inner { position:relative; }
.success-check { width:64px;height:64px;border-radius:999px;background:#10B981;color:white;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;box-shadow:0 12px 40px -12px rgba(16,185,129,.5); }
.success-actions { display:flex;gap:10px;justify-content:center;margin-bottom:22px;flex-wrap:wrap; }
.success-meta { font:400 11px var(--font-mono);color:var(--ink-4);display:flex;gap:14px;justify-content:center;flex-wrap:wrap; }
.success-meta span { display:inline-flex;align-items:center;gap:5px; }
.chain-bar { padding:22px;border-radius:18px;margin-top:18px;display:flex;align-items:center;gap:16px;flex-wrap:wrap; }
.chain-icon { width:42px;height:42px;border-radius:12px;background:var(--accent);color:white;display:flex;align-items:center;justify-content:center;flex-shrink:0; }

/* ── Pricing ── */
#view-pricing { padding-top:84px; }
.pricing-wrap { padding:40px 80px 60px;max-width:1100px;margin:0 auto;text-align:center; }
.pricing-grid { display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:36px;text-align:left; }
.pricing-tier { padding:28px;border-radius:20px;position:relative; }
.pricing-tier.is-featured { outline:2px solid var(--accent);box-shadow:0 24px 60px -24px var(--accent-glow); }
.pricing-badge { position:absolute;top:-10px;left:28px;background:var(--accent);color:white;border:none; }
.pricing-price { display:flex;align-items:baseline;gap:4px;margin-bottom:18px; }
.pricing-amount { font:600 36px/1 var(--font-sans);letter-spacing:-.025em; }
.pricing-features { list-style:none;display:flex;flex-direction:column;gap:10px;margin-top:16px; }
.pricing-feature { display:flex;align-items:center;gap:10px;font:400 13px var(--font-sans);color:var(--ink-2); }

/* ── Toast ── */
.toast {
  position:fixed;bottom:24px;right:24px;z-index:200;
  padding:14px 20px;border-radius:var(--r-md);max-width:400px;
  font:500 13px var(--font-sans);
  display:flex;align-items:center;gap:10px;
  box-shadow:0 16px 40px -12px rgba(0,0,0,.3);
  animation:slideIn .2s ease;
}
@keyframes slideIn { from{transform:translateY(16px);opacity:0} to{transform:none;opacity:1} }
.toast-error { background:#FEF2F2;color:#B91C1C;border:1px solid #FCA5A5; }
.toast-success { background:#F0FDF4;color:#15803D;border:1px solid #86EFAC; }
[data-theme="dark"] .toast-error { background:rgba(185,28,28,.15);color:#FCA5A5;border-color:rgba(185,28,28,.3); }
[data-theme="dark"] .toast-success { background:rgba(21,128,61,.15);color:#86EFAC;border-color:rgba(21,128,61,.3); }

/* ── Footer ── */
.footer { padding:24px 80px;display:flex;justify-content:space-between;font:400 12px var(--font-mono);color:var(--ink-4);flex-wrap:wrap;gap:8px; }

/* ── No scrollbar ── */
.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { scrollbar-width: none; }
.t-fast { transition: all .12s ease; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .hero { padding: 40px 24px 30px; }
  .hero .h1 { font-size: 38px; }
  .section-wrap,.tools-view-wrap,.tool-page-wrap { padding-left:24px;padding-right:24px; }
  .tools-grid-4 { grid-template-columns:repeat(2,1fr); }
  .tools-grid-6 { grid-template-columns:repeat(3,1fr); }
  .diff-grid { padding:20px 24px 40px;grid-template-columns:repeat(2,1fr); }
  .tool-page-body { grid-template-columns:1fr; }
  .pricing-grid { grid-template-columns:1fr; }
  .footer { padding:16px 24px; }
}
@media (max-width: 640px) {
  #topnav { top:8px;left:8px;right:8px; }
  .hero .h1 { font-size:28px; }
  .tools-grid-4,.tools-grid-6 { grid-template-columns:repeat(2,1fr); }
  .diff-grid { grid-template-columns:1fr; }
  .hero-ctas { flex-direction:column;align-items:center; }
  .processing-card { padding:24px;width:calc(100% - 32px); }
  .success-actions { flex-direction:column;align-items:center; }
}

/* ════════════════════════════════════════════════════════════
   BLOG
   ════════════════════════════════════════════════════════════ */

/* Blog index page */
.blog-wrap { padding:100px 80px 80px;max-width:1200px;margin:0 auto; }
.blog-header { margin-bottom:40px; }
.blog-header .h2 { margin-bottom:10px; }

.blog-cats { display:flex;gap:8px;flex-wrap:wrap;margin-bottom:32px; }
.blog-cat-btn {
  padding:7px 16px;border-radius:999px;font:500 13px var(--font-sans);
  border:1px solid var(--line-strong);background:transparent;color:var(--ink-3);cursor:pointer;
  transition:background .15s,color .15s,border-color .15s;
}
.blog-cat-btn:hover,.blog-cat-btn.is-active {
  background:var(--accent);color:white;border-color:var(--accent);
}

.blog-grid { display:grid;grid-template-columns:repeat(3,1fr);gap:20px; }

.blog-card {
  border-radius:var(--r-lg);overflow:hidden;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease;
  background:var(--glass-bg);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
}
.blog-card:hover { transform:translateY(-3px);box-shadow:0 24px 48px -16px rgba(15,23,42,.18); }
.blog-card-img {
  width:100%;aspect-ratio:16/9;object-fit:cover;display:block;
  background:var(--bg-2);
}
.blog-card-body { padding:18px 20px 22px; }
.blog-card-cat {
  display:inline-flex;align-items:center;gap:6px;
  font:600 11px var(--font-sans);letter-spacing:.04em;text-transform:uppercase;
  color:var(--accent);margin-bottom:8px;
}
.blog-card-title {
  font:600 17px/1.3 var(--font-sans);letter-spacing:-.015em;
  color:var(--ink);margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.blog-card-excerpt {
  font:400 13px/1.55 var(--font-sans);color:var(--ink-3);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px;
}
.blog-card-meta { display:flex;align-items:center;gap:10px;font:400 12px var(--font-mono);color:var(--ink-4); }
.blog-card-dot { width:3px;height:3px;border-radius:999px;background:var(--ink-5); }

/* Blog article page */
.blog-article-wrap { padding:100px 0 80px;max-width:760px;margin:0 auto; }
.blog-article-hero { width:100%;aspect-ratio:2/1;object-fit:cover;border-radius:var(--r-xl);margin-bottom:36px;display:block; }
.blog-article-meta { display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:16px; }
.blog-article-cat { font:600 12px var(--font-sans);letter-spacing:.04em;text-transform:uppercase;color:var(--accent); }
.blog-article-title { font:700 38px/1.15 var(--font-sans);letter-spacing:-.03em;color:var(--ink);margin-bottom:12px; }
.blog-article-sub { font:400 18px/1.6 var(--font-sans);color:var(--ink-3);margin-bottom:32px; }
.blog-article-divider { height:1px;background:var(--line);margin:32px 0; }

/* Article prose */
.blog-prose { font:400 16px/1.75 var(--font-sans);color:var(--ink-2); }
.blog-prose h2 {
  font:600 24px/1.25 var(--font-sans);letter-spacing:-.02em;
  color:var(--ink);margin:40px 0 14px;
}
.blog-prose h3 { font:600 18px/1.3 var(--font-sans);color:var(--ink);margin:28px 0 10px; }
.blog-prose p { margin:0 0 18px; }
.blog-prose ul,.blog-prose ol { padding-left:22px;margin:0 0 18px;display:flex;flex-direction:column;gap:8px; }
.blog-prose li { line-height:1.6; }
.blog-prose strong { font-weight:600;color:var(--ink); }
.blog-prose a { color:var(--accent);text-decoration:underline;text-underline-offset:3px; }
.blog-prose a:hover { color:var(--accent-hi); }

/* Blog CTA box */
.blog-cta {
  margin:36px 0;padding:28px 32px;border-radius:var(--r-lg);
  background:linear-gradient(135deg,rgba(59,130,246,.12),rgba(139,92,246,.08));
  border:1px solid rgba(59,130,246,.2);display:flex;align-items:center;gap:24px;
}
.blog-cta-icon { font-size:32px;flex-shrink:0; }
.blog-cta-text h3 { font:600 16px var(--font-sans);color:var(--ink);margin-bottom:4px; }
.blog-cta-text p  { font:400 13px var(--font-sans);color:var(--ink-3);margin:0; }

/* Related articles */
.blog-related { margin-top:56px; }
.blog-related-title { font:600 20px var(--font-sans);letter-spacing:-.015em;margin-bottom:20px; }
.blog-related-grid { display:grid;grid-template-columns:repeat(3,1fr);gap:14px; }

/* Blog nav section on landing */
.blog-section { padding:40px 80px 60px;max-width:1200px;margin:0 auto; }
.blog-section-head { display:flex;justify-content:space-between;align-items:center;margin-bottom:24px; }
.blog-preview-grid { display:grid;grid-template-columns:repeat(3,1fr);gap:16px; }

/* Responsive blog */
@media (max-width:1024px) {
  .blog-wrap,.blog-section { padding-left:24px;padding-right:24px; }
  .blog-grid,.blog-preview-grid,.blog-related-grid { grid-template-columns:repeat(2,1fr); }
  .blog-article-wrap { padding-left:24px;padding-right:24px; }
  .blog-article-title { font-size:28px; }
}
@media (max-width:640px) {
  .blog-grid,.blog-preview-grid,.blog-related-grid { grid-template-columns:1fr; }
  .blog-article-title { font-size:22px; }
  .blog-article-sub { font-size:15px; }
  .blog-cta { flex-direction:column;gap:12px; }
  .blog-cats { overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px; }
  .blog-cats::-webkit-scrollbar { display:none; }
}