/* ==========================================================================
   지오디BOX — Design Tokens & Base Styles
   Brand reference: godwebs.com (teal accent, Poppins + Noto Sans KR, mono B/W base)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700;800&family=Noto+Sans+KR:wght@400;500;600;700;800&display=swap');

:root {
  /* Brand color — sampled from godwebs.com primary accent */
  --color-primary: #1AC9BA;
  --color-primary-dark: #14A89C;
  --color-primary-light: #E6FAF8;
  --color-primary-rgb: 26, 201, 186;

  /* Neutrals — matched to godwebs.com's mono palette */
  --color-foreground: #1a1a1a;
  --color-foreground-soft: #333333;
  --color-text-secondary: #666666;
  --color-text-tertiary: #999999;
  --color-background: #ffffff;
  --color-muted: #f6f6f6;
  --color-muted-2: #f4f4f4;
  --color-border: #e5e5e5;
  --color-border-strong: #d4d4d4;
  --color-dark: #1a1a1a;
  --color-dark-2: #272727;

  --color-destructive: #e5484d;
  --color-success: #1ac9ba;
  --color-on-primary: #ffffff;

  /* Typography */
  --font-en: 'Poppins', 'Noto Sans KR', sans-serif;
  --font-kr: 'Noto Sans KR', 'Poppins', sans-serif;

  /* Spacing scale (8px rhythm) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 999px;

  /* Shadow */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 1px 1px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
  --shadow-primary: 0 8px 24px rgba(var(--color-primary-rgb), 0.28);

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 150ms;
  --dur-base: 220ms;
  --dur-slow: 320ms;

  --container: 1160px;
  --header-h: 72px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

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

body {
  font-family: var(--font-kr);
  color: var(--color-foreground);
  background: var(--color-background);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100dvh;
}

img, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input, select { font-family: inherit; font-size: inherit; color: inherit; }

ul { list-style: none; }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

/* Focus visibility (accessibility) */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.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;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-kr);
  font-weight: 600;
  font-size: 15px;
  padding: 13px 28px;
  border-radius: var(--radius-full);
  transition: transform var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out),
              background-color var(--dur-fast) var(--ease-out);
  white-space: nowrap;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-primary);
}
.btn-primary:hover { background: var(--color-primary-dark); box-shadow: 0 12px 28px rgba(var(--color-primary-rgb), 0.36); }

.btn-lg { padding: 17px 40px; font-size: 17px; }

.btn-outline {
  background: transparent;
  color: var(--color-foreground);
  border: 1.5px solid var(--color-border-strong);
}
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary-dark); background: var(--color-primary-light); }

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
}
.btn-ghost:hover { color: var(--color-foreground); background: var(--color-muted); }

.btn-disabled,
.btn[disabled] {
  opacity: 0.45;
  pointer-events: none;
  box-shadow: none;
}

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 21px;
  letter-spacing: -0.01em;
  color: var(--color-foreground);
  flex-shrink: 0;
}
.logo .logo-mark {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  flex-shrink: 0;
}
.logo .logo-mark svg { width: 19px; height: 19px; }
.logo .logo-accent { color: var(--color-primary); }

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 1;
}

.main-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-foreground-soft);
  padding: 9px 14px;
  border-radius: var(--radius-full);
  transition: color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
  white-space: nowrap;
}
.main-nav a:hover { color: var(--color-primary-dark); background: var(--color-primary-light); }
.main-nav a.is-active { color: var(--color-primary-dark); background: var(--color-primary-light); }

.header-actions { display: flex; align-items: center; gap: var(--space-3); flex-shrink: 0; }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
}
.nav-toggle:hover { background: var(--color-muted); }

/* ==========================================================================
   Footer (content mirrors godwebs.com footer structure/info)
   ========================================================================== */

.site-footer {
  background: var(--color-dark);
  color: #b3b3b3;
  padding-block: var(--space-8) var(--space-6);
  margin-top: var(--space-9);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: var(--space-7);
  padding-bottom: var(--space-7);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  flex-wrap: wrap;
}

.footer-brand .logo { color: #fff; margin-bottom: var(--space-3); }
.footer-brand p {
  max-width: 360px;
  font-size: 14px;
  line-height: 1.7;
  color: #999;
}

.footer-links {
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-4);
}
.footer-col ul { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-col a { font-size: 14px; color: #999; transition: color var(--dur-fast) var(--ease-out); }
.footer-col a:hover { color: var(--color-primary); }

.footer-bottom {
  padding-top: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-meta {
  font-size: 12.5px;
  line-height: 2;
  color: #767676;
}
.footer-meta strong { color: #999; font-weight: 500; }
.footer-meta .sep { margin: 0 8px; color: #444; }

.footer-legal {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: 12.5px;
  color: #666;
}
.footer-legal .footer-legal-links { display: flex; gap: var(--space-5); }
.footer-legal .footer-legal-links a { color: #999; }
.footer-legal .footer-legal-links a:hover { color: var(--color-primary); }

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  padding-block: var(--space-9) var(--space-8);
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-size: 13px;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
}
.hero-badge svg { width: 14px; height: 14px; }

.hero h1 {
  font-family: var(--font-kr);
  font-weight: 800;
  font-size: clamp(30px, 5vw, 48px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--color-foreground);
  max-width: 760px;
  margin-inline: auto;
}

.hero h1 .accent { color: var(--color-primary); }

.hero-sub {
  margin-top: var(--space-4);
  font-size: 17px;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin-inline: auto;
  line-height: 1.7;
}

/* ==========================================================================
   Dropzone / Tool Card
   ========================================================================== */

.tool-panel {
  max-width: 760px;
  margin: var(--space-7) auto 0;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.dropzone {
  position: relative;
  padding: var(--space-9) var(--space-5);
  text-align: center;
  border: 2px dashed var(--color-border-strong);
  border-radius: var(--radius-lg);
  margin: var(--space-5);
  transition: border-color var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out);
  cursor: pointer;
}

.dropzone:hover, .dropzone.is-dragover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.dropzone.is-dragover { transform: scale(1.005); }

.dropzone-icon {
  width: 68px; height: 68px;
  margin: 0 auto var(--space-4);
  border-radius: var(--radius-full);
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
}
.dropzone-icon svg { width: 32px; height: 32px; }

.dropzone h3 { font-size: 19px; font-weight: 700; margin-bottom: var(--space-2); }
.dropzone p { font-size: 14px; color: var(--color-text-tertiary); margin-bottom: var(--space-5); }

.dropzone input[type="file"] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer;
}

.trust-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  padding: var(--space-4) var(--space-5);
  background: var(--color-muted);
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 12.5px;
  color: var(--color-text-secondary);
  font-weight: 500;
}
.trust-item svg { width: 15px; height: 15px; color: var(--color-primary); flex-shrink: 0; }

/* File list / preview grid */
.file-workspace { display: none; padding: var(--space-5); }
.file-workspace.is-active { display: block; }

.file-workspace-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
  gap: var(--space-3);
}
.file-workspace-head h3 { font-size: 16px; font-weight: 700; }
.file-workspace-head .file-count { color: var(--color-text-tertiary); font-weight: 500; }

.file-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.file-thumb {
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-muted);
  aspect-ratio: 3/4;
  cursor: grab;
  transition: box-shadow var(--dur-fast) var(--ease-out);
}
.file-thumb:active { cursor: grabbing; }
.file-thumb.is-dragging { opacity: 0.4; }
.file-thumb img { width: 100%; height: 100%; object-fit: cover; }

.file-thumb .thumb-index {
  position: absolute; top: 6px; left: 6px;
  background: rgba(26,26,26,0.65);
  color: #fff;
  font-size: 11px; font-weight: 700;
  width: 20px; height: 20px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}

.file-thumb .thumb-remove {
  position: absolute; top: 6px; right: 6px;
  width: 22px; height: 22px;
  background: rgba(26,26,26,0.65);
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--dur-fast) var(--ease-out);
}
.file-thumb .thumb-remove:hover { background: var(--color-destructive); }
.file-thumb .thumb-remove svg { width: 12px; height: 12px; }

.file-thumb .thumb-name {
  position: absolute; left: 0; right: 0; bottom: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  color: #fff;
  font-size: 10.5px;
  padding: 12px 6px 5px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.file-add-tile {
  aspect-ratio: 3/4;
  border: 1.5px dashed var(--color-border-strong);
  border-radius: var(--radius-sm);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: var(--space-2);
  color: var(--color-text-tertiary);
  font-size: 12px;
  font-weight: 600;
  position: relative;
  transition: border-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.file-add-tile:hover { border-color: var(--color-primary); color: var(--color-primary); }
.file-add-tile svg { width: 22px; height: 22px; }
.file-add-tile input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }

/* Options row */
.options-row {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  padding: var(--space-5);
  background: var(--color-muted);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
}

.option-group { display: flex; flex-direction: column; gap: var(--space-2); }
.option-group label.option-label { font-size: 12.5px; font-weight: 700; color: var(--color-text-secondary); text-transform: uppercase; letter-spacing: 0.03em; }

.segmented {
  display: inline-flex;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 3px;
  gap: 2px;
}
.segmented button {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  border-radius: var(--radius-full);
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.segmented button.is-selected { background: var(--color-primary); color: #fff; }

.convert-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding-top: var(--space-2);
}

/* Progress / result state */
.tool-state { display: none; padding: var(--space-9) var(--space-5); text-align: center; }
.tool-state.is-active { display: block; }

.spinner {
  width: 52px; height: 52px;
  border-radius: 50%;
  border: 4px solid var(--color-primary-light);
  border-top-color: var(--color-primary);
  margin: 0 auto var(--space-5);
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.result-icon {
  width: 68px; height: 68px;
  margin: 0 auto var(--space-4);
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
}
.result-icon svg { width: 34px; height: 34px; }

.tool-state h3 { font-size: 20px; font-weight: 700; margin-bottom: var(--space-2); }
.tool-state p { font-size: 14px; color: var(--color-text-tertiary); margin-bottom: var(--space-5); }
.tool-state .result-actions { display: flex; gap: var(--space-3); justify-content: center; flex-wrap: wrap; }

/* ==========================================================================
   Sections
   ========================================================================== */

.section { padding-block: var(--space-9); }
.section-muted { background: var(--color-muted); }

.section-head { text-align: center; max-width: 620px; margin: 0 auto var(--space-7); }
.section-eyebrow {
  font-size: 13px; font-weight: 700; color: var(--color-primary-dark);
  text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: var(--space-3);
}
.section-head h2 { font-size: clamp(24px, 3.4vw, 32px); font-weight: 800; letter-spacing: -0.01em; }
.section-head p { margin-top: var(--space-3); color: var(--color-text-secondary); font-size: 15.5px; }

/* Tool grid (other tools) */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.tool-card {
  display: block;
  padding: var(--space-5);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
  position: relative;
}
.tool-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: transparent; }

.tool-card .tool-icon {
  width: 46px; height: 46px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--space-4);
  color: #fff;
}
.tool-card .tool-icon svg { width: 22px; height: 22px; }

.tool-card h3 { font-size: 15.5px; font-weight: 700; margin-bottom: 4px; }
.tool-card p { font-size: 13px; color: var(--color-text-tertiary); line-height: 1.5; }

.tool-card .soon-badge {
  position: absolute; top: var(--space-4); right: var(--space-4);
  font-size: 10.5px; font-weight: 700;
  background: var(--color-muted-2); color: var(--color-text-tertiary);
  padding: 3px 9px; border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
}
.tool-card.is-soon { cursor: default; }
.tool-card.is-soon:hover { transform: none; box-shadow: none; border-color: var(--color-border); }
.tool-card.is-soon h3, .tool-card.is-soon p { color: var(--color-text-tertiary); }

/* Feature/how-it-works */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.step-card { text-align: center; }
.step-num {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--color-foreground);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-en); font-weight: 700; font-size: 15px;
  margin: 0 auto var(--space-4);
}
.step-card h3 { font-size: 16px; font-weight: 700; margin-bottom: var(--space-2); }
.step-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}
.feature-card {
  padding: var(--space-6);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.feature-card .feature-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--space-4);
}
.feature-card .feature-icon svg { width: 22px; height: 22px; }
.feature-card h3 { font-size: 16px; font-weight: 700; margin-bottom: var(--space-2); }
.feature-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; }

/* CTA band */
.cta-band {
  background: var(--color-foreground);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(var(--color-primary-rgb), 0.35), transparent 60%);
  pointer-events: none;
}
.cta-band h2 { font-size: clamp(22px, 3vw, 30px); font-weight: 800; margin-bottom: var(--space-3); position: relative; }
.cta-band p { color: #b3b3b3; margin-bottom: var(--space-6); position: relative; }
.cta-band .btn-primary { position: relative; }

/* Page hero (sub pages) */
.page-hero { padding-block: var(--space-7) var(--space-6); text-align: center; }
.page-hero h1 { font-size: clamp(26px, 4vw, 36px); font-weight: 800; letter-spacing: -0.02em; }
.page-hero p { margin-top: var(--space-3); color: var(--color-text-secondary); font-size: 15.5px; max-width: 520px; margin-inline: auto; }

.breadcrumb {
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--color-text-tertiary);
  margin-bottom: var(--space-4); justify-content: center;
}
.breadcrumb a:hover { color: var(--color-primary-dark); }
.breadcrumb svg { width: 12px; height: 12px; }

/* Notice banner */
.notice-banner {
  display: flex; align-items: flex-start; gap: var(--space-3);
  background: #fff8e6; border: 1px solid #f5dfa3;
  color: #8a6d1a;
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-size: 13.5px; line-height: 1.6;
  margin-top: var(--space-5);
}
.notice-banner svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 1px; }

/* Split page range list */
.page-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}
.page-chip {
  aspect-ratio: 3/4;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-en); font-weight: 700; font-size: 13px;
  color: var(--color-text-secondary);
  background: #fff;
  transition: all var(--dur-fast) var(--ease-out);
}
.page-chip.is-selected { border-color: var(--color-primary); background: var(--color-primary-light); color: var(--color-primary-dark); }

/* ==========================================================================
   Form fields (password/text inputs, checkboxes)
   ========================================================================== */

.field {
  padding: 11px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fff;
  font-size: 14px;
  width: 100%;
  transition: border-color var(--dur-fast) var(--ease-out);
}
.field:focus { border-color: var(--color-primary); }
.field-hint { font-size: 12px; color: var(--color-text-tertiary); margin-top: 6px; }

.checkbox-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 13.5px;
  color: var(--color-foreground-soft);
  cursor: pointer;
  user-select: none;
}
.checkbox-row input[type="checkbox"] {
  width: 18px; height: 18px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.slider-row { display: flex; align-items: center; gap: var(--space-3); }
.slider-row input[type="range"] {
  flex: 1;
  accent-color: var(--color-primary);
  height: 4px;
}
.slider-value {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 13px;
  color: var(--color-primary-dark);
  min-width: 42px;
  text-align: right;
}

/* Rotate thumbnails */
.rotate-thumb {
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-muted);
  display: flex; align-items: center; justify-content: center;
  aspect-ratio: 3/4;
}
.rotate-thumb canvas, .rotate-thumb img {
  max-width: 100%; max-height: 100%;
  transition: transform var(--dur-base) var(--ease-out);
}
.rotate-thumb .thumb-index {
  position: absolute; top: 6px; left: 6px;
  background: rgba(26,26,26,0.65); color: #fff;
  font-size: 11px; font-weight: 700;
  width: 20px; height: 20px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.rotate-controls {
  position: absolute; bottom: 0; left: 0; right: 0;
  display: flex;
  background: rgba(26,26,26,0.72);
  backdrop-filter: blur(2px);
}
.rotate-controls button {
  flex: 1;
  padding: 8px 0;
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--dur-fast) var(--ease-out);
}
.rotate-controls button:hover { background: rgba(var(--color-primary-rgb), 0.7); }
.rotate-controls button svg { width: 15px; height: 15px; }

/* Watermark live preview */
.watermark-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--space-6);
  align-items: start;
}
.watermark-preview-wrap {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-muted);
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-5);
  min-height: 360px;
}
.watermark-preview-wrap canvas { max-width: 100%; max-height: 460px; box-shadow: var(--shadow-md); background: #fff; }
.watermark-form { display: flex; flex-direction: column; gap: var(--space-4); }
.watermark-form .option-label { font-size: 12.5px; font-weight: 700; color: var(--color-text-secondary); text-transform: uppercase; letter-spacing: 0.03em; display: block; margin-bottom: 6px; }

/* Stat comparison (compress result) */
.stat-compare {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-5);
  margin-bottom: var(--space-5);
}
.stat-box { text-align: center; }
.stat-box .stat-label { font-size: 12px; color: var(--color-text-tertiary); margin-bottom: 4px; }
.stat-box .stat-value { font-family: var(--font-en); font-weight: 700; font-size: 20px; }
.stat-arrow { color: var(--color-text-tertiary); }
.stat-badge {
  display: inline-block;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-weight: 700;
  font-size: 13px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-top: 4px;
}

/* Result thumb grid (pdf → jpg) */
.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: var(--space-3);
  margin: var(--space-5) 0;
  text-align: left;
}
.result-thumb {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-muted);
}
.result-thumb img { width: 100%; display: block; aspect-ratio: 3/4; object-fit: cover; }
.result-thumb .result-thumb-foot {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 10px;
  font-size: 11.5px;
  color: var(--color-text-secondary);
}
.result-thumb .result-thumb-foot button { color: var(--color-primary-dark); font-weight: 600; }
.result-thumb .result-thumb-foot button:hover { text-decoration: underline; }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid, .features-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 1040px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }

  .main-nav.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-3) var(--space-5) var(--space-5);
    box-shadow: var(--shadow-md);
    gap: 2px;
  }
  .main-nav.is-open a { padding: 12px 14px; }
}

@media (max-width: 860px) {
  .footer-top { flex-direction: column; gap: var(--space-6); }
}

@media (max-width: 720px) {
  .steps-grid, .features-grid { grid-template-columns: 1fr; }
  .options-row { flex-direction: column; gap: var(--space-4); }
  .footer-links { gap: var(--space-6); }
  .footer-legal { flex-direction: column; align-items: flex-start; }
  .watermark-layout { grid-template-columns: 1fr; }
  .stat-compare { gap: var(--space-3); }
}

@media (max-width: 560px) {
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
  .hero { padding-block: var(--space-7) var(--space-6); }
  .dropzone { padding: var(--space-7) var(--space-4); margin: var(--space-4); }
  .trust-row { gap: var(--space-4); }
  .file-grid { grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); }
}

@media (max-width: 420px) {
  .tools-grid { grid-template-columns: 1fr 1fr; }
  .container { padding-inline: var(--space-4); }
}

@media (max-width: 480px) {
  .header-actions .btn-ghost { display: none; }
}

/* -------------------------------------------------------------------
   자주 묻는 질문 (관리자 SEO/AEO 패널에서 자동 생성/갱신)
   ------------------------------------------------------------------- */
.gbx-faq-section { padding-block: var(--space-6); }
.gbx-faq-section .container { text-align: center; }
.gbx-faq-section h2 { font-size: clamp(22px, 3vw, 28px); font-weight: 800; letter-spacing: -0.01em; margin-bottom: var(--space-5); }
.gbx-faq-list { display: flex; flex-direction: column; gap: 10px; max-width: 720px; margin-inline: auto; text-align: left; }
.gbx-faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  background: #fff;
}
.gbx-faq-item summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--color-foreground);
  list-style: none;
}
.gbx-faq-item summary::-webkit-details-marker { display: none; }
.gbx-faq-item summary::before {
  content: '+';
  display: inline-block;
  width: 16px;
  margin-right: 8px;
  color: var(--color-primary);
  font-weight: 800;
}
.gbx-faq-item[open] summary::before { content: '−'; }
.gbx-faq-item p {
  margin: 10px 0 0 24px;
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

/* -------------------------------------------------------------------
   발표 시간 계산기
   ------------------------------------------------------------------- */
.calc-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--space-6);
  padding: var(--space-6);
}
.calc-settings { display: flex; flex-direction: column; }
.slider-edge { font-size: 12px; color: var(--color-text-tertiary); white-space: nowrap; }
.calc-ppt-fields { display: flex; flex-direction: column; gap: var(--space-3); margin-top: var(--space-2); }
.calc-ppt-fields label { display: flex; flex-direction: column; gap: 4px; font-size: 12.5px; color: var(--color-text-secondary); }
.calc-ppt-fields input { margin-top: 2px; }
.calc-result {
  margin-top: var(--space-6);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  text-align: center;
}
.calc-result-label { display: block; font-size: 12.5px; color: var(--color-primary-dark); font-weight: 700; margin-bottom: 4px; }
.calc-result-value { display: block; font-size: 30px; font-weight: 800; color: var(--color-primary-dark); font-variant-numeric: tabular-nums; }
.calc-result-sub { display: block; font-size: 11.5px; color: var(--color-text-tertiary); margin-top: 6px; }
.calc-script { display: flex; flex-direction: column; }
.calc-textarea { flex: 1; min-height: 280px; resize: vertical; line-height: 1.7; }
.calc-stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3);
  margin-top: var(--space-4);
}
.calc-stats > div {
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  padding: var(--space-3); text-align: center;
}
.calc-stats span { display: block; font-size: 11.5px; color: var(--color-text-tertiary); margin-bottom: 4px; }
.calc-stats strong { font-size: 14px; font-variant-numeric: tabular-nums; }

@media (max-width: 720px) {
  .calc-layout { grid-template-columns: 1fr; padding: var(--space-4); }
  .calc-stats { grid-template-columns: 1fr; }
}

/* -------------------------------------------------------------------
   카드뉴스 분할
   ------------------------------------------------------------------- */
.split-preview-wrap {
  position: relative;
  max-width: 480px;
  margin: 0 auto var(--space-5);
}
.split-preview-wrap canvas {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-muted);
}
.split-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--space-3);
  max-width: 560px;
  margin: 0 auto var(--space-5);
}
.split-controls .option-group { align-items: stretch; }
.result-thumb img.thumb-auto-ratio { aspect-ratio: auto; object-fit: contain; background: #fff; }

@media (max-width: 560px) {
  .split-controls { grid-template-columns: repeat(2, 1fr); }
}