/* --- BUNDLED FROM: base.css --- */



:root {
  
  --font-family-primary:
    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-mono:
    'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;

  
  --font-size-xs: 0.75rem; 
  --font-size-sm: 0.875rem; 
  --font-size-base: 1rem; 
  --font-size-lg: 1.125rem; 
  --font-size-xl: 1.25rem; 
  --font-size-2xl: 1.5rem; 
  --font-size-3xl: 1.875rem; 

  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  
  --space-1: 0.25rem; 
  --space-2: 0.5rem; 
  --space-3: 0.75rem; 
  --space-4: 1rem; 
  --space-5: 1.25rem; 
  --space-6: 1.5rem; 
  --space-8: 2rem; 
  --space-10: 2.5rem; 
  --space-12: 3rem; 
  --space-16: 4rem; 

  
  --radius-sm: 0.125rem; 
  --radius-md: 0.375rem; 
  --radius-lg: 0.5rem; 
  --radius-xl: 0.75rem; 

  
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.4);

  
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);

  
  --glass-blur: blur(12px);
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);

  
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}


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

html {
  font-size: 100%; 
  line-height: var(--line-height-normal);
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  background-image:
    radial-gradient(circle at top right, var(--color-bg-secondary) 0%, transparent 50%),
    radial-gradient(circle at bottom left, var(--color-bg-tertiary) 0%, transparent 50%);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
}


h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
}

h1 {
  font-size: var(--font-size-3xl);
}
h2 {
  font-size: var(--font-size-2xl);
}
h3 {
  font-size: var(--font-size-xl);
}
h4 {
  font-size: var(--font-size-lg);
}
h5 {
  font-size: var(--font-size-base);
}
h6 {
  font-size: var(--font-size-sm);
}

p {
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
}


a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover,
a:focus {
  color: var(--color-accent-hover);
  text-decoration: underline;
}


ul,
ol {
  margin-bottom: var(--space-4);
  padding-left: var(--space-6);
}

li {
  margin-bottom: var(--space-1);
}


code {
  font-family: var(--font-family-mono);
  font-size: 0.875em;
  background-color: var(--color-bg-secondary);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
}

pre {
  font-family: var(--font-family-mono);
  background-color: var(--color-bg-secondary);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: var(--space-4);
}

pre code {
  background: none;
  padding: 0;
  border-radius: 0;
}


img {
  max-width: 100%;
  height: auto;
  display: block;
}


table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--space-4);
}

th,
td {
  padding: var(--space-3);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  font-weight: 600;
  color: var(--color-text-primary);
  background-color: var(--color-bg-secondary);
}


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

.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  z-index: var(--z-tooltip);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 6px;
}


@media (max-width: 640px) {
  html {
    font-size: 87.5%; 
  }
}

@media (min-width: 1200px) {
  html {
    font-size: 112.5%; 
  }
}


/* --- BUNDLED FROM: themes.css --- */



:root,
.theme-light {
  
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-tertiary: #f1f5f9;
  --color-bg-overlay: rgba(0, 0, 0, 0.05);
  --color-bg-gradient: linear-gradient(135deg, #ffb400 0%, #ff4e00 100%);
  --color-bg-gradient-subtle: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  --color-surface-glass: rgba(255, 255, 255, 0.8);

  
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #4a4a4a;
  --color-text-muted: #7a7a7a;
  --color-text-inverse: #ffffff;

  
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --color-border-dark: #cbd5e1;

  
  --color-accent: #ffb400;
  --color-accent-hover: #d79500;
  --color-accent-light: #fff3cd;
  --color-accent-dark: #b87f00;
  --color-accent-gradient: linear-gradient(135deg, #ffb400 0%, #ff4e00 100%);

  
  --color-success: #00c49a;
  --color-success-hover: #00a582;
  --color-success-light: #d1f5ee;
  --color-success-dark: #008768;

  --color-warning: #ffb400;
  --color-warning-hover: #d79500;
  --color-warning-light: #fff3cd;
  --color-warning-dark: #b87f00;

  --color-error: #ff4e00;
  --color-error-hover: #cc3e00;
  --color-error-light: #ffe5db;
  --color-error-dark: #992f00;

  --color-info: #9b5de5;
  --color-info-hover: #7e3fcf;
  --color-info-light: #f0e5ff;
  --color-info-dark: #6b2fb8;

  
  --color-focus: #9b5de5;
  --color-focus-ring: rgba(155, 93, 229, 0.25);
  --color-hover-bg: rgba(0, 0, 0, 0.04);
  --color-active-bg: rgba(0, 0, 0, 0.08);

  
  --color-input-bg: #ffffff;
  --color-input-border: #e2e8f0;
  --color-input-border-focus: #9b5de5;
  --color-input-text: #1a1a1a;
  --color-input-placeholder: #7a7a7a;

  
  --color-button-primary-bg: #ffb400;
  --color-button-primary-text: #1a1a1a;
  --color-button-primary-border: #ffb400;
  --color-button-primary-hover-bg: #d79500;
  --color-button-primary-hover-border: #d79500;

  --color-button-secondary-bg: #ff4e00;
  --color-button-secondary-text: #ffffff;
  --color-button-secondary-border: #ff4e00;
  --color-button-secondary-hover-bg: #cc3e00;
  --color-button-secondary-hover-border: #cc3e00;

  
  --color-tool-header-bg: var(--color-bg-secondary);
  --color-tool-border: var(--color-border);
  --color-code-bg: #f8f9fa;
  --color-code-border: #e9ecef;
}


.theme-dark {
  
  --color-bg-primary: #14110f;
  --color-bg-secondary: #1f1b18;
  --color-bg-tertiary: #2a2622;
  --color-bg-overlay: rgba(255, 255, 255, 0.05);
  --color-bg-gradient: linear-gradient(135deg, #ffb400 0%, #ff4e00 100%);
  --color-bg-gradient-subtle: linear-gradient(135deg, #1f1b18 0%, #2a2622 100%);
  --color-surface-glass: rgba(31, 27, 24, 0.8);

  
  --color-text-primary: #f5f5f0;
  --color-text-secondary: #b3a99f;
  --color-text-muted: #8a7f75;
  --color-text-inverse: #14110f;

  
  --color-border: #2a2622;
  --color-border-light: #1f1b18;
  --color-border-dark: #3a3530;

  
  --color-accent: #ffb400;
  --color-accent-hover: #d79500;
  --color-accent-light: #3a2f10;
  --color-accent-dark: #ffc933;
  --color-accent-gradient: linear-gradient(135deg, #ffb400 0%, #ff4e00 100%);

  
  --color-success: #00c49a;
  --color-success-hover: #00d9aa;
  --color-success-light: #0d332a;
  --color-success-dark: #00a582;

  --color-warning: #ffb400;
  --color-warning-hover: #ffc933;
  --color-warning-light: #3a2f10;
  --color-warning-dark: #d79500;

  --color-error: #ff4e00;
  --color-error-hover: #ff6b2b;
  --color-error-light: #3a1a0d;
  --color-error-dark: #cc3e00;

  --color-info: #9b5de5;
  --color-info-hover: #b07ff0;
  --color-info-light: #2a1f3a;
  --color-info-dark: #7e3fcf;

  
  --color-focus: #9b5de5;
  --color-focus-ring: rgba(155, 93, 229, 0.35);
  --color-hover-bg: rgba(255, 180, 0, 0.08);
  --color-active-bg: rgba(255, 180, 0, 0.15);

  
  --color-input-bg: #1f1b18;
  --color-input-border: #2a2622;
  --color-input-border-focus: #9b5de5;
  --color-input-text: #f5f5f0;
  --color-input-placeholder: #8a7f75;

  
  --color-button-primary-bg: #ffb400;
  --color-button-primary-text: #14110f;
  --color-button-primary-border: #ffb400;
  --color-button-primary-hover-bg: #d79500;
  --color-button-primary-hover-border: #d79500;

  --color-button-secondary-bg: #ff4e00;
  --color-button-secondary-text: #f5f5f0;
  --color-button-secondary-border: #ff4e00;
  --color-button-secondary-hover-bg: #ff6b2b;
  --color-button-secondary-hover-border: #ff6b2b;

  
  --color-tool-header-bg: var(--color-bg-secondary);
  --color-tool-border: var(--color-border);
  --color-code-bg: #1f1b18;
  --color-code-border: #2a2622;
}


* {
  transition:
    background-color var(--transition-normal),
    border-color var(--transition-normal),
    color var(--transition-normal),
    box-shadow var(--transition-normal);
}


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


@media (prefers-contrast: high) {
  :root {
    --color-border: currentColor;
    --color-focus-ring: currentColor;
  }

  .theme-dark {
    --color-border: currentColor;
    --color-focus-ring: currentColor;
  }
}


@media print {
  :root {
    --color-bg-primary: white;
    --color-bg-secondary: white;
    --color-text-primary: black;
    --color-text-secondary: black;
    --color-border: black;
    --color-accent: black;
  }

  * {
    background: white !important;
    color: black !important;
    box-shadow: none !important;
  }
}


/* --- BUNDLED FROM: components.css --- */



.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.container--narrow {
  max-width: 800px;
}

.container--wide {
  max-width: 1400px;
}


.grid {
  display: grid;
  gap: var(--space-4);
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}


.flex {
  display: flex;
}

.flex--column {
  flex-direction: column;
}

.flex--center {
  align-items: center;
  justify-content: center;
}

.flex--between {
  justify-content: space-between;
}

.flex--around {
  justify-content: space-around;
}

.flex--wrap {
  flex-wrap: wrap;
}


.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-5);
  font-family: inherit;
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 48px; 
  min-width: 48px;
  gap: var(--space-2);
}

.btn:focus {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.btn--primary {
  background-color: var(--color-button-primary-bg);
  color: var(--color-button-primary-text);
  border-color: var(--color-button-primary-border);
}

.btn--primary:hover:not(:disabled) {
  background-color: var(--color-button-primary-hover-bg);
  border-color: var(--color-button-primary-hover-border);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--secondary {
  background-color: var(--color-button-secondary-bg);
  color: var(--color-button-secondary-text);
  border-color: var(--color-button-secondary-border);
}

.btn--secondary:hover:not(:disabled) {
  background-color: var(--color-button-secondary-hover-bg);
  border-color: var(--color-button-secondary-hover-border);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background-color: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn--outline:hover:not(:disabled) {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-text-primary);
  border-color: transparent;
}

.btn--ghost:hover:not(:disabled) {
  background-color: var(--color-hover-bg);
}

.btn--small {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  min-height: 48px;
  min-width: 48px;
}

.btn--large {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-lg);
  min-height: 52px;
  min-width: 52px;
}


.input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: inherit;
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-input-text);
  background-color: var(--color-input-bg);
  border: 1px solid var(--color-input-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  min-height: 44px; 
}

.input:focus {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-color: var(--color-input-border-focus);
  box-shadow: 0 0 0 3px var(--color-focus-ring);
}

.input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  background-color: var(--color-bg-tertiary);
}

.input::placeholder {
  color: var(--color-input-placeholder);
  opacity: 1;
}

.input--error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

.input--success {
  border-color: var(--color-success);
  box-shadow: 0 0 0 3px rgba(25, 135, 84, 0.1);
}

.textarea {
  resize: vertical;
  min-height: 120px;
  font-family: var(--font-family-mono);
}


.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: 500;
  color: var(--color-text-primary);
}

.form-label--required::after {
  content: ' *';
  color: var(--color-error);
}

.form-help {
  margin-top: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.form-error {
  margin-top: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--color-error);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}


.card {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card__header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg-secondary);
}

.card__title {
  margin: 0;
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text-primary);
}

.card__body {
  padding: var(--space-6);
}

.card__footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg-secondary);
}


.alert {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  margin-bottom: var(--space-4);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.alert__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
}

.alert__content {
  flex: 1;
}

.alert__title {
  margin: 0 0 var(--space-1) 0;
  font-weight: 600;
  font-size: var(--font-size-base);
}

.alert__message {
  margin: 0;
  font-size: var(--font-size-sm);
}

.alert--success {
  background-color: var(--color-success-light);
  border-color: var(--color-success);
  color: var(--color-success-dark);
}

.alert--warning {
  background-color: var(--color-warning-light);
  border-color: var(--color-warning);
  color: var(--color-warning-dark);
}

.alert--error {
  background-color: var(--color-error-light);
  border-color: var(--color-error);
  color: var(--color-error-dark);
}

.alert--info {
  background-color: var(--color-info-light);
  border-color: var(--color-info);
  color: var(--color-info-dark);
}


.loading {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-top: 2px solid var(--color-accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}


@media (max-width: 640px) {
  .container {
    padding: 0 var(--space-3);
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .btn--small {
    width: auto;
    min-width: 44px;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .card__header,
  .card__body,
  .card__footer {
    padding: var(--space-4);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-2);
  }

  .btn {
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
  }

  .input,
  .textarea {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
  }
}


.focus-trap {
  position: relative;
}

.focus-trap::before,
.focus-trap::after {
  content: '';
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}


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

.sr-only-focusable:focus {
  position: static !important;
  width: auto !important;
  height: auto !important;
  padding: inherit !important;
  margin: inherit !important;
  overflow: visible !important;
  clip: auto !important;
  white-space: normal !important;
}


@media (prefers-contrast: high) {
  .btn {
    border: 2px solid currentColor;
  }

  .input {
    border: 2px solid currentColor;
  }

  .card {
    border: 2px solid currentColor;
  }
}


.header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--color-surface-glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
  gap: var(--space-6);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin: 0;
  transition: transform var(--transition-fast);
  cursor: pointer;
}

.logo:hover {
  transform: translateY(-2px);
}

.logo-icon {
  font-size: 2rem;
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-5px);
  }
}

.logo-text {
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  padding: var(--space-3) var(--space-5);
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: var(--font-size-base);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-accent-gradient);
  transition: all var(--transition-normal);
  transform: translateX(-50%);
}

.nav-link:hover {
  color: var(--color-accent);
  background-color: var(--color-accent-light);
  text-decoration: none;
  transform: translateY(-1px);
}

.nav-link:hover::before {
  width: 80%;
}

.nav-link.active {
  color: var(--color-accent);
  background: var(--color-accent-light);
  font-weight: 600;
}

.nav-link.active::before {
  width: 80%;
}

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

.btn-icon {
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: 50%;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.btn-icon:hover {
  background: var(--color-accent);
  color: white;
  transform: rotate(180deg) scale(1.1);
  box-shadow: var(--shadow-glow);
}

.theme-icon {
  transition: transform var(--transition-normal);
}


.footer {
  margin-top: auto;
  padding: var(--space-12) 0 var(--space-6);
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--color-accent-gradient);
  opacity: 0.3;
}

.footer .container {
  text-align: center;
}

.footer p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-sm);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
  position: relative;
}

.footer-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent-gradient);
  transition: width var(--transition-normal);
}

.footer-links a:hover {
  color: var(--color-accent);
  text-decoration: none;
  transform: translateY(-2px);
}

.footer-links a:hover::after {
  width: 100%;
}


.main {
  flex: 1;
  padding: var(--space-12) 0;
  position: relative;
}

.tool-hub {
  max-width: 1200px;
  margin: 0 auto;
}

.tool-header {
  text-align: center;
  margin-bottom: var(--space-12);
  animation: fadeInUp 0.6s ease-out;
}

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

.tool-header h2 {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  margin-bottom: var(--space-4);
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.tool-header p {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: var(--line-height-relaxed);
}

.tool-container {
  animation: fadeInUp 0.8s ease-out 0.2s both;
}


@media (max-width: 768px) {
  .header .container {
    flex-wrap: wrap;
  }

  .nav {
    order: 3;
    flex-basis: 100%;
    justify-content: flex-start;
    margin-top: var(--space-3);
  }

  .nav-list {
    width: 100%;
    justify-content: space-around;
  }

  .nav-link {
    padding: 12px var(--space-3);
    font-size: var(--font-size-sm);
  }

  .logo {
    font-size: var(--font-size-xl);
  }

  .tool-header h2 {
    font-size: var(--font-size-2xl);
  }

  .tool-header p {
    font-size: var(--font-size-base);
  }

  .main {
    padding: var(--space-8) 0;
  }

  .footer {
    padding: var(--space-8) 0 var(--space-4);
  }
}

@media (max-width: 480px) {
  .logo-text {
    display: none;
  }

  .nav-list {
    gap: var(--space-1);
  }

  .footer-links {
    gap: var(--space-4);
  }
}


/* --- BUNDLED FROM: content.css --- */



.hero-section {
  background: var(--color-accent-gradient);
  padding: var(--space-16) 0;
  margin-bottom: var(--space-12);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  animation: fadeInUp 0.8s ease-out;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: white;
  margin-bottom: var(--space-6);
  line-height: 1.2;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.page-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--color-text-primary);
  line-height: 1.2;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: var(--space-8);
  line-height: var(--line-height-relaxed);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
  align-items: center;
}

.feature-badge {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  color: white;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: all var(--transition-fast);
}

.feature-badge:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}


.content-section {
  margin: var(--space-16) 0;
  padding: var(--space-12) 0;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-xl);
}

.content-article {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.content-article h2 {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: var(--space-6);
  margin-top: var(--space-12);
  line-height: 1.3;
  position: relative;
  padding-left: var(--space-5);
}

.content-article h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--color-accent-gradient);
  border-radius: 2px;
}

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

.content-article h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
  line-height: 1.4;
}

.content-article h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-accent);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

.content-article p {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-5);
}

.content-article strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.content-article ol,
.content-article ul {
  margin-bottom: var(--space-6);
  padding-left: var(--space-8);
}

.content-article li {
  margin-bottom: var(--space-3);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
}

.usage-steps {
  background: var(--color-bg-primary);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-accent);
  margin: var(--space-8) 0;
}

.usage-steps li {
  margin-bottom: var(--space-4);
  padding-left: var(--space-2);
}


.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
  margin: var(--space-8) 0;
}

.feature-item {
  background: var(--color-bg-primary);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-border);
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.feature-item:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-item h4 {
  font-size: var(--font-size-lg);
  margin-top: 0;
  margin-bottom: var(--space-3);
}

.feature-item p {
  margin-bottom: 0;
  font-size: var(--font-size-sm);
}


.guides-section {
  padding: var(--space-16) 0;
  background: var(--color-bg-primary);
}

.section-heading {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  text-align: center;
  margin-bottom: var(--space-4);
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-description {
  text-align: center;
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto var(--space-12);
  line-height: var(--line-height-relaxed);
}

.guides-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-6);
}

.guide-card {
  background: var(--color-bg-secondary);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 2px solid var(--color-border);
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.guide-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-accent-gradient);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.guide-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.guide-card:hover::before {
  transform: scaleX(1);
}

.guide-icon {
  font-size: 3rem;
  margin-bottom: var(--space-4);
  display: inline-block;
  animation: float 3s ease-in-out infinite;
}

.guide-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.guide-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-5);
}

.guide-link {
  color: var(--color-accent);
  font-weight: 600;
  font-size: var(--font-size-sm);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: all var(--transition-fast);
}

.guide-link:hover {
  gap: var(--space-3);
  text-decoration: none;
}


.tools-section {
  padding: var(--space-16) 0;
  background: var(--color-bg-secondary);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
}

.tool-card {
  background: var(--color-bg-primary);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-border);
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
  position: relative;
  text-align: center;
}

.tool-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-lg);
}

.tool-icon {
  font-size: 3rem;
  margin-bottom: var(--space-4);
  display: inline-block;
  filter: grayscale(0.3);
  transition: filter var(--transition-normal);
}

.tool-card:hover .tool-icon {
  filter: grayscale(0);
  animation: bounce 0.5s ease;
}

@keyframes bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.tool-card h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.tool-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
  margin-bottom: var(--space-4);
}

.tool-status {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}


.about-section {
  padding: var(--space-16) 0;
  background: var(--color-bg-primary);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-content p {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-6);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-12);
}

.stat-item {
  padding: var(--space-6);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-border);
  transition: all var(--transition-normal);
}

.stat-item:hover {
  border-color: var(--color-accent);
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-2);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}


.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-8);
  text-align: left;
}

.footer-section h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.footer-section h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.footer-section p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
}

.footer-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-section li {
  margin-bottom: var(--space-2);
}

.footer-section a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}


@media (max-width: 768px) {
  .hero-section {
    padding: var(--space-12) 0;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-features {
    justify-content: center;
  }

  .content-article {
    padding: 0 var(--space-4);
  }

  .content-article h2 {
    font-size: var(--font-size-2xl);
  }

  .features-grid,
  .guides-grid,
  .tools-grid {
    grid-template-columns: 1fr;
  }

  .guides-section,
  .tools-section,
  .about-section {
    padding: var(--space-12) 0;
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-section {
    padding: var(--space-10) 0;
  }

  .feature-badge {
    font-size: var(--font-size-xs);
    padding: var(--space-1) var(--space-3);
  }

  .about-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}




.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-8) var(--space-4);
  min-height: 60vh;
}


.breadcrumb {
  margin-bottom: var(--space-6);
  padding: var(--space-3) 0;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: var(--font-size-sm);
}

.breadcrumb li {
  display: flex;
  align-items: center;
}

.breadcrumb li:not(:last-child)::after {
  content: '›';
  margin-left: var(--space-2);
  color: var(--color-text-muted);
  font-weight: bold;
}

.breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.breadcrumb li[aria-current='page'] {
  color: var(--color-text-muted);
}


.guide-article {
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--space-8);
}


.article-header {
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: 2px solid var(--color-border);
}

.article-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  line-height: var(--line-height-tight);
}

.article-meta {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  line-height: var(--line-height-relaxed);
}

.article-info {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.article-info span {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}


.toc {
  background: var(--color-bg-secondary);
  border-left: 4px solid var(--color-accent);
  padding: var(--space-5);
  margin: var(--space-6) 0;
  border-radius: var(--radius-md);
}

.toc h2 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
}

.toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc li {
  margin-bottom: var(--space-2);
}

.toc a {
  color: var(--color-accent);
  text-decoration: none;
  transition: all var(--transition-fast);
  display: inline-block;
  padding: var(--space-1) 0;
}

.toc a:hover {
  color: var(--color-accent-hover);
  transform: translateX(4px);
}


.article-section {
  margin-bottom: var(--space-8);
}

.article-section h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.article-section h2:first-of-type {
  border-top: none;
  margin-top: 0;
}

.article-section h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

.article-section p {
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-4);
  color: var(--color-text-secondary);
}

.article-section ul,
.article-section ol {
  margin-bottom: var(--space-4);
  padding-left: var(--space-6);
  line-height: var(--line-height-relaxed);
}

.article-section li {
  margin-bottom: var(--space-2);
  color: var(--color-text-secondary);
}

.article-section strong {
  color: var(--color-text-primary);
  font-weight: 600;
}


.info-box,
.warning-box,
.error-box {
  padding: var(--space-5);
  margin: var(--space-6) 0;
  border-radius: var(--radius-md);
  border-left: 4px solid;
}

.info-box {
  background: rgba(59, 130, 246, 0.1);
  border-color: #3b82f6;
}

.warning-box {
  background: rgba(251, 191, 36, 0.1);
  border-color: #fbbf24;
}

.error-box {
  background: rgba(239, 68, 68, 0.1);
  border-color: #ef4444;
}

.info-box h3,
.warning-box h3,
.error-box h3 {
  margin-top: 0;
  margin-bottom: var(--space-3);
  font-size: var(--font-size-lg);
}


.code-example {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin: var(--space-4) 0;
  overflow-x: auto;
}

.code-example pre {
  margin: 0;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  color: var(--color-text-primary);
}


.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-6) 0;
  overflow-x: auto;
  display: block;
}

.data-table table {
  width: 100%;
  min-width: 600px;
}

.data-table th,
.data-table td {
  padding: var(--space-3);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.data-table th {
  background: var(--color-bg-secondary);
  font-weight: 600;
  color: var(--color-text-primary);
}

.data-table tr:hover {
  background: var(--color-bg-secondary);
}


.clusters-section {
  margin-top: var(--space-10);
  padding-top: var(--space-8);
  border-top: 2px solid var(--color-border);
}

.clusters-section h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-6);
  color: var(--color-text-primary);
}

.clusters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.cluster-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  transition: all var(--transition-normal);
  text-decoration: none;
  display: block;
}

.cluster-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.cluster-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.cluster-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: var(--line-height-normal);
  margin: 0;
}

.cluster-icon {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-2);
  display: block;
}


.faq-section {
  margin-top: var(--space-8);
}

.faq-item {
  margin-bottom: 0;
  border-bottom: 1px solid var(--color-border);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-item summary {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  padding: var(--space-4) 0;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-text-muted);
  flex-shrink: 0;
  margin-left: var(--space-4);
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  content: "\2212";
}

.faq-item p {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  padding: 0 0 var(--space-4) 0;
  margin: 0;
}

.faq-question {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.faq-answer {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}


.guide-cta {
  background: var(--color-accent-gradient);
  color: white;
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  text-align: center;
  margin: var(--space-8) 0;
}

.guide-cta h2 {
  color: white;
  margin-bottom: var(--space-4);
}

.guide-cta p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-6);
}

.guide-cta .btn {
  background: white;
  color: var(--color-accent);
  font-weight: 600;
}

.guide-cta .btn:hover {
  background: rgba(255, 255, 255, 0.9);
  transform: translateY(-2px);
}


.article-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.article-nav-link {
  flex: 1;
  padding: var(--space-4);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.article-nav-link:hover {
  background: var(--color-accent);
  color: white;
  transform: translateX(-4px);
}

.article-nav-link.next:hover {
  transform: translateX(4px);
}

.article-nav-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  display: block;
  margin-bottom: var(--space-1);
}

.article-nav-title {
  font-weight: 600;
  color: var(--color-text-primary);
}


@media (max-width: 768px) {
  .main-content {
    padding: var(--space-4) var(--space-3);
  }

  .guide-article {
    padding: var(--space-5);
  }

  .article-header h1 {
    font-size: 1.75rem;
  }

  .clusters-grid {
    grid-template-columns: 1fr;
  }

  .article-nav {
    flex-direction: column;
  }

  .data-table {
    font-size: var(--font-size-sm);
  }
}


.article-image-container {
  margin: var(--space-8) 0;
  text-align: center;
}

.article-image {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  transition:
    transform var(--transition-normal),
    box-shadow var(--transition-normal);
}

.article-image:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.article-image-caption {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
  font-style: italic;
}


/* --- BUNDLED FROM: hex-tool.css --- */


.hex-tool {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0;
  animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.hex-tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

@media (max-width: 768px) {
  .hex-tool-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

.input-section,
.output-section {
  background: var(--color-bg-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.input-section::before,
.output-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-accent-gradient);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.input-section:hover,
.output-section:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  transform: translateY(-2px);
}

.input-section:hover::before,
.output-section:hover::before {
  opacity: 1;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-border-light);
}

.section-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin: 0;
  color: var(--color-text-primary);
  letter-spacing: -0.5px;
  position: relative;
  padding-left: var(--space-4);
}

.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 24px;
  background: var(--color-accent-gradient);
  border-radius: 2px;
}

.format-options {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
  align-items: center;
}

.format-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-bg-secondary);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-border);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.format-group:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
  transform: translateY(-1px);
}

.format-group input[type='radio'],
.format-group input[type='checkbox'] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-accent);
}

.format-group label {
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  cursor: pointer;
  font-weight: 500;
  user-select: none;
}

.format-group input:checked + label {
  color: var(--color-accent);
  font-weight: 600;
}

.text-area {
  width: 100%;
  min-height: 150px;
  padding: var(--space-4);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  resize: vertical;
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-inner);
}

.text-area:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--color-bg-primary);
  box-shadow:
    var(--shadow-md),
    0 0 0 4px var(--color-focus-ring);
  transform: translateY(-1px);
}

.text-area.has-error {
  border-color: var(--color-error);
}

.text-area.has-warning {
  border-color: var(--color-warning);
}

.action-buttons {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-6);
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--color-accent-gradient);
  color: white;
  border: none;
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-lg);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  font-size: var(--font-size-base);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  letter-spacing: 0.3px;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left var(--transition-slow);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px) scale(1.02);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0) scale(0.98);
}

.btn-primary:disabled {
  background: var(--color-border-dark);
  cursor: not-allowed;
  transform: none;
  opacity: 0.6;
}

.btn-secondary {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  border: 2px solid var(--color-border);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  font-size: var(--font-size-base);
  letter-spacing: 0.3px;
}

.btn-secondary:hover {
  background: var(--color-accent-light);
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.message {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin: var(--space-3) 0;
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  border-left: 4px solid;
  backdrop-filter: var(--glass-blur);
  animation: slideIn 0.3s ease-out;
  box-shadow: var(--shadow-sm);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.message.error {
  background: var(--color-error-light);
  color: var(--color-error-dark);
  border-color: var(--color-error);
}

.message.warning {
  background: var(--color-warning-light);
  color: var(--color-warning-dark);
  border-color: var(--color-warning);
}

.message.success {
  background: var(--color-success-light);
  color: var(--color-success-dark);
  border-color: var(--color-success);
}

.message.info {
  background: var(--color-info-light);
  color: var(--color-info-dark);
  border-color: var(--color-info);
}

.info-panel {
  background: var(--color-bg-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid var(--color-border-light);
  margin-bottom: var(--space-8);
  box-shadow: var(--shadow-md);
  backdrop-filter: var(--glass-blur);
  transition: all var(--transition-normal);
}

.info-panel:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-6);
}

.info-item {
  text-align: center;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
  transition: all var(--transition-fast);
}

.info-item:hover {
  background: var(--color-accent-light);
  transform: scale(1.05);
}

.info-label {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 1px;
}

.info-value {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-accent);
  font-family: var(--font-family-mono);
}

.history-panel {
  background: var(--color-bg-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
}

.history-panel:hover {
  box-shadow: var(--shadow-xl);
}

.history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 2px solid var(--color-border-light);
}

.history-header h3 {
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
  font-size: var(--font-size-xl);
}

.history-list {
  max-height: 400px;
  overflow-y: auto;
  padding-right: var(--space-2);
}

.history-list::-webkit-scrollbar {
  width: 8px;
}

.history-list::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
  border-radius: 4px;
}

.history-list::-webkit-scrollbar-thumb {
  background: var(--color-border-dark);
  border-radius: 4px;
  transition: background var(--transition-fast);
}

.history-list::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}

.history-item {
  padding: var(--space-4);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-3);
  background: var(--color-bg-secondary);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.history-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--color-accent-gradient);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.history-item:hover {
  border-color: var(--color-accent);
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  background: var(--color-bg-primary);
}

.history-item:hover::before {
  opacity: 1;
}

.history-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.history-direction {
  background: var(--color-primary);
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 500;
}

.history-content {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.4;
  word-break: break-all;
}

.history-input {
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.history-output {
  color: var(--color-text-secondary);
}

.history-empty {
  text-align: center;
  color: var(--color-text-secondary);
  font-style: italic;
  padding: 2rem;
}

.loading-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-secondary);
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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


.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;
}


.btn:focus,
.text-area:focus,
input:focus,
select:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}


@media (prefers-contrast: high) {
  .text-area,
  .btn {
    border-width: 2px;
  }
}


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

  .spinner {
    animation: none;
  }
}