@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;600;700;800&family=DM+Sans:ital,wght@0,400;0,500;0,600;1,400;1,500&display=swap');

:root {
  --clr-primary: #6C3BFF;
  --clr-primary-light: #8B63FF;
  --clr-primary-dark: #5428E0;
  --clr-primary-ghost: rgba(108, 59, 255, 0.06);
  --clr-primary-tint: #EDE8FF;
  --clr-accent: #FF3B5C;
  --clr-accent-tint: #FFE8EC;

  --clr-bg: #F7F8FC;
  --clr-bg-elevated: #FFFFFF;
  --clr-surface: #FFFFFF;
  --clr-surface-2: #F2F3F8;

  --clr-text-primary: #15112B;
  --clr-text-secondary: #4A4568;
  --clr-text-tertiary: #8884A0;

  --clr-border: #E4E2EE;
  --clr-border-strong: #C8C4DC;
  --clr-border-focus: #6C3BFF;

  --clr-success: #22C993;
  --clr-success-tint: #E6FBF4;
  --clr-error: #FF3B5C;
  --clr-error-tint: #FFE8EC;
  --clr-info: #3B9EFF;
  --clr-info-tint: #E8F3FF;
  --clr-warning: #F59E0B;
  --clr-warning-tint: #FEF3C7;

  --font-heading: 'Sora', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;

  --text-xs: clamp(0.7rem, 0.65rem + 0.25vw, 0.75rem);
  --text-sm: clamp(0.8125rem, 0.75rem + 0.3vw, 0.875rem);
  --text-base: clamp(0.9375rem, 0.875rem + 0.3vw, 1rem);
  --text-md: clamp(1rem, 0.95rem + 0.25vw, 1.0625rem);
  --text-lg: clamp(1.0625rem, 1rem + 0.3vw, 1.125rem);
  --text-xl: clamp(1.1875rem, 1.1rem + 0.4vw, 1.25rem);
  --text-2xl: clamp(1.375rem, 1.25rem + 0.6vw, 1.5rem);
  --text-3xl: clamp(1.625rem, 1.4rem + 1vw, 1.875rem);
  --text-4xl: clamp(1.875rem, 1.5rem + 1.5vw, 2.25rem);
  --text-5xl: clamp(2.25rem, 1.8rem + 2vw, 2.875rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-7: 1.75rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-14: 3.5rem;
  --space-16: 4rem;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-pill: 9999px;

  --shadow-xs: 0 1px 2px rgba(21, 17, 43, 0.05);
  --shadow-sm: 0 1px 4px rgba(21, 17, 43, 0.07), 0 2px 8px rgba(21, 17, 43, 0.05);
  --shadow-md: 0 4px 12px rgba(21, 17, 43, 0.08), 0 2px 6px rgba(21, 17, 43, 0.05);
  --shadow-lg: 0 8px 28px rgba(21, 17, 43, 0.10), 0 2px 8px rgba(21, 17, 43, 0.06);
  --shadow-primary: 0 4px 18px rgba(108, 59, 255, 0.28), 0 1px 4px rgba(108, 59, 255, 0.18);

  --gutter: max(1rem, 4vw);
  --content-max: 1280px;
  --topbar-h: 60px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-fast: 120ms;
  --dur-base: 200ms;
}

@media (prefers-color-scheme: dark) {
  :root {
    --clr-primary: #7D52FF;
    --clr-primary-light: #9970FF;
    --clr-primary-dark: #6C3BFF;
    --clr-primary-ghost: rgba(125, 82, 255, 0.10);
    --clr-primary-tint: #1E1640;
    --clr-accent: #FF5272;
    --clr-accent-tint: #2D0D14;

    --clr-bg: #0F0D1E;
    --clr-bg-elevated: #16132B;
    --clr-surface: #1C1833;
    --clr-surface-2: #131028;

    --clr-text-primary: #EDE9FF;
    --clr-text-secondary: #A89EC8;
    --clr-text-tertiary: #6A6385;

    --clr-border: #2A2445;
    --clr-border-strong: #3D3660;
    --clr-border-focus: #7D52FF;

    --clr-success: #2EDBA0;
    --clr-success-tint: #0B2820;
    --clr-error: #FF5272;
    --clr-error-tint: #2D0D14;
    --clr-info: #5BB3FF;
    --clr-info-tint: #091D36;
    --clr-warning: #FBBF24;
    --clr-warning-tint: #2D1A00;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.35), 0 2px 8px rgba(0, 0, 0, 0.25);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4), 0 2px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.5), 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-primary: 0 4px 18px rgba(125, 82, 255, 0.35), 0 1px 4px rgba(125, 82, 255, 0.22);
  }
}

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

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--clr-text-primary);
  background-color: var(--clr-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

a {
  color: var(--clr-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

:focus-visible {
  outline: 2px solid var(--clr-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: 0 var(--gutter);
  background: rgba(247, 248, 252, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
  transition: background var(--dur-base) var(--ease-out);
}

@media (prefers-color-scheme: dark) {
  .topbar {
    background: rgba(15, 13, 30, 0.82);
  }
}

.topbar__logo {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-accent) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  flex-shrink: 0;
  letter-spacing: -0.01em;
  user-select: none;
}

.topbar__name {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--clr-text-primary);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.topbar__nav {
  display: none;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
}

@media (min-width: 768px) {
  .topbar__nav {
    display: flex;
  }
}

.topbar__nav-item {
  display: flex;
}

.topbar__nav-item a {
  display: inline-flex;
  align-items: center;
  height: 34px;
  padding: 0 var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--clr-text-secondary);
  text-decoration: none;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.topbar__nav-item a:hover {
  background: var(--clr-primary-ghost);
  color: var(--clr-primary);
  text-decoration: none;
}

.topbar__spacer {
  flex: 1;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out),
              transform var(--dur-fast) var(--ease-out),
              border-color var(--dur-base) var(--ease-out),
              color var(--dur-base) var(--ease-out),
              opacity var(--dur-base) var(--ease-out);
  position: relative;
  overflow: hidden;
  user-select: none;
}

.btn:active {
  transform: scale(0.975);
}

.btn:disabled,
.btn[disabled] {
  opacity: 0.48;
  cursor: not-allowed;
  pointer-events: none;
}

.btn--sm {
  height: 32px;
  padding: 0 var(--space-3);
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
}

.btn--md {
  height: 40px;
  padding: 0 var(--space-5);
  font-size: var(--text-sm);
}

.btn--lg {
  height: 48px;
  padding: 0 var(--space-6);
  font-size: var(--text-base);
}

.btn--primary {
  background: linear-gradient(135deg, var(--clr-primary) 0%, #8B3AFF 100%);
  color: #fff;
  box-shadow: var(--shadow-primary);
}

.btn--primary:hover {
  box-shadow: 0 6px 24px rgba(108, 59, 255, 0.38), 0 2px 6px rgba(108, 59, 255, 0.22);
  transform: translateY(-1px);
  text-decoration: none;
}

.btn--primary:active {
  transform: translateY(0) scale(0.975);
}

.btn--ghost {
  background: transparent;
  color: var(--clr-text-secondary);
  border: 1.5px solid var(--clr-border);
}

.btn--ghost:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: var(--clr-primary-ghost);
  text-decoration: none;
}

.btn.loading {
  pointer-events: none;
  color: transparent;
}

.btn.loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

input[type="text"],
input[type="email"],
input[type="number"],
input[type="date"],
select,
textarea {
  display: block;
  width: 100%;
  height: 42px;
  padding: 0 var(--space-3);
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text-primary);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 400;
  transition: border-color var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
  appearance: none;
  -webkit-appearance: none;
}

textarea {
  height: auto;
  padding: var(--space-3);
  resize: vertical;
  min-height: 80px;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--clr-border-focus);
  box-shadow: 0 0 0 3px var(--clr-primary-ghost);
}

input::placeholder,
textarea::placeholder {
  color: var(--clr-text-tertiary);
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238884A0' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-8);
  cursor: pointer;
}

.switch {
  position: relative;
  display: inline-flex;
  width: 46px;
  height: 26px;
  flex-shrink: 0;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.switch__track {
  position: absolute;
  inset: 0;
  background: var(--clr-surface-2);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-pill);
  transition: background var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
  cursor: pointer;
}

.switch__thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  background: var(--clr-text-tertiary);
  border-radius: 50%;
  transition: transform var(--dur-base) var(--ease-spring),
              background var(--dur-base) var(--ease-out);
  pointer-events: none;
}

.switch input:checked ~ .switch__track {
  background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-primary-light) 100%);
  border-color: var(--clr-primary);
}

.switch input:checked ~ .switch__thumb {
  transform: translateX(20px);
  background: #fff;
}

.switch input:focus-visible ~ .switch__track {
  outline: 2px solid var(--clr-primary);
  outline-offset: 2px;
}

.card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card--interactive {
  cursor: pointer;
  transition: box-shadow var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out);
}

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

.spec-table {
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.spec-table__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--clr-border);
}

.spec-table__row:last-child {
  border-bottom: none;
}

.spec-table__label {
  font-size: var(--text-xs);
  color: var(--clr-text-tertiary);
  font-weight: 500;
  flex-shrink: 0;
}

.spec-table__value {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--clr-text-primary);
  font-family: var(--font-heading);
  text-align: right;
}

.upload-zone {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 120px;
  padding: var(--space-5);
  border: 2px dashed var(--clr-border-strong);
  border-radius: var(--radius-lg);
  cursor: pointer;
  text-align: center;
  transition: border-color var(--dur-base) var(--ease-out),
              background var(--dur-base) var(--ease-out);
  background: var(--clr-surface);
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--clr-primary);
  background: var(--clr-primary-ghost);
}

.upload-zone input[type="file"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  border: none;
  box-shadow: none;
  border-radius: 0;
  background: transparent;
}

.upload-zone input[type="file"]:focus-visible {
  outline: none;
}

.upload-zone:focus-within {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px var(--clr-primary-ghost);
}

.upload-zone__icon {
  width: 36px;
  height: 36px;
  color: var(--clr-text-tertiary);
  pointer-events: none;
}

.upload-zone__text {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--clr-text-secondary);
  pointer-events: none;
}

.upload-zone__hint {
  font-size: var(--text-xs);
  color: var(--clr-text-tertiary);
  pointer-events: none;
}

.process-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  height: 48px;
  background: linear-gradient(135deg, var(--clr-primary) 0%, #8B3AFF 100%);
  color: #fff;
  border: none;
  border-radius: var(--radius-lg);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow-primary);
  transition: box-shadow var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out),
              opacity var(--dur-base) var(--ease-out);
  position: relative;
  overflow: hidden;
  letter-spacing: -0.01em;
}

.process-btn:hover:not(:disabled):not(.loading) {
  box-shadow: 0 6px 24px rgba(108, 59, 255, 0.38);
  transform: translateY(-1px);
}

.process-btn:active:not(:disabled):not(.loading) {
  transform: scale(0.975);
}

.process-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.process-btn.loading {
  pointer-events: none;
  color: transparent;
}

.process-btn.loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2.5px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.canvas-wrapper {
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.canvas-wrapper canvas {
  display: none;
  max-width: 100%;
  max-height: 420px;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.canvas-wrapper canvas.visible {
  display: block;
}

.canvas-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--clr-text-tertiary);
  text-align: center;
  padding: var(--space-6);
}

.canvas-placeholder svg {
  width: 40px;
  height: 40px;
  opacity: 0.5;
}

.canvas-placeholder p {
  font-size: var(--text-sm);
}

.output-meta {
  display: none;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
}

.output-meta.visible {
  display: flex;
}

.output-meta__item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.output-meta__label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--clr-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.output-meta__value {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--clr-text-primary);
  font-family: var(--font-heading);
}

.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 40px;
  padding: 0 var(--space-4);
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--clr-text-secondary);
  cursor: pointer;
  text-decoration: none;
  transition: background var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out),
              color var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out),
              opacity var(--dur-base) var(--ease-out);
}

.action-btn:hover:not(:disabled) {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: var(--clr-primary-ghost);
  text-decoration: none;
}

.action-btn--primary {
  background: var(--clr-primary);
  color: #fff;
  border-color: var(--clr-primary);
  box-shadow: var(--shadow-primary);
}

.action-btn--primary:hover:not(:disabled) {
  background: var(--clr-primary-dark);
  border-color: var(--clr-primary-dark);
  color: #fff;
}

.action-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.validation-box {
  display: none;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border-left: 3px solid transparent;
  font-size: var(--text-sm);
  line-height: 1.5;
}

.validation-box.visible {
  display: flex;
}

.validation-box.error {
  background: var(--clr-error-tint);
  border-left-color: var(--clr-error);
  color: var(--clr-error);
}

.validation-box.success {
  background: var(--clr-success-tint);
  border-left-color: var(--clr-success);
  color: var(--clr-success);
}

.validation-box.info {
  background: var(--clr-info-tint);
  border-left-color: var(--clr-info);
  color: var(--clr-info);
}

.validation-box svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 2px;
}

.privacy-note {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--clr-success-tint);
  border: 1px solid rgba(34, 201, 147, 0.2);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  color: var(--clr-text-tertiary);
  line-height: 1.4;
}

.privacy-note svg {
  width: 14px;
  height: 14px;
  color: var(--clr-success);
  flex-shrink: 0;
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
}

.toggle-row__content {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.toggle-row__label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--clr-text-primary);
}

.toggle-row__hint {
  font-size: var(--text-xs);
  color: var(--clr-text-tertiary);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

@media (min-width: 480px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-field label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--clr-text-secondary);
  letter-spacing: 0.02em;
}

.exam-hero {
  position: relative;
  background: var(--clr-bg-elevated);
  border-bottom: 1px solid var(--clr-border);
  padding: var(--space-12) var(--gutter) var(--space-10);
  overflow: hidden;
}

.exam-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 60% at 8% 50%, rgba(108, 59, 255, 0.07) 0%, transparent 100%),
    radial-gradient(ellipse 40% 50% at 92% 30%, rgba(255, 59, 92, 0.05) 0%, transparent 100%);
  pointer-events: none;
}

.exam-hero__inner {
  position: relative;
  max-width: 860px;
}

.exam-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  height: 26px;
  padding: 0 var(--space-3);
  background: var(--clr-primary-tint);
  color: var(--clr-primary);
  border-radius: var(--radius-pill);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
}

.exam-hero__badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--clr-primary);
  flex-shrink: 0;
}

.exam-hero__title {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 1.2rem + 2vw, 2.5rem);
  font-weight: 800;
  color: var(--clr-text-primary);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--space-4);
}

.exam-hero__title mark {
  background: none;
  background-image: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--clr-primary);
}

.exam-hero__lead {
  font-size: var(--text-md);
  color: var(--clr-text-secondary);
  max-width: 560px;
  line-height: 1.65;
  margin-bottom: var(--space-6);
}

.exam-hero__specs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.spec-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  height: 28px;
  padding: 0 var(--space-3);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--clr-text-secondary);
}

.spec-chip__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.spec-chip--primary .spec-chip__dot { background: var(--clr-primary); }
.spec-chip--accent .spec-chip__dot { background: var(--clr-accent); }
.spec-chip--success .spec-chip__dot { background: var(--clr-success); }

.page-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--gutter);
  background: var(--clr-bg);
  border-bottom: 1px solid var(--clr-border);
  font-size: var(--text-xs);
  flex-wrap: wrap;
}

.page-breadcrumb a {
  color: var(--clr-text-tertiary);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}

.page-breadcrumb a:hover {
  color: var(--clr-primary);
  text-decoration: none;
}

.page-breadcrumb__separator {
  color: var(--clr-text-tertiary);
  font-size: 10px;
  line-height: 1;
}

.page-breadcrumb__current {
  font-weight: 600;
  color: var(--clr-text-secondary);
}

#seoContent {
  padding: var(--space-12) var(--gutter);
}

#seoContent h2 {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--clr-text-primary);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
  padding-top: var(--space-8);
  border-top: 1px solid var(--clr-border);
}

#seoContent h2:first-child {
  padding-top: 0;
  border-top: none;
}

#seoContent h3 {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--clr-text-primary);
  letter-spacing: -0.01em;
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

#seoContent p {
  font-size: var(--text-base);
  color: var(--clr-text-secondary);
  line-height: 1.8;
  max-width: 72ch;
  margin-bottom: var(--space-4);
}

#seoContent ul {
  list-style: none;
  margin-bottom: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: 72ch;
}

#seoContent ul li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-base);
  color: var(--clr-text-secondary);
  line-height: 1.6;
}

#seoContent ul li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--clr-primary);
  flex-shrink: 0;
  margin-top: 0.5em;
}

#seoContent ol {
  list-style: none;
  counter-reset: seo-ol;
  margin-bottom: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: 72ch;
}

#seoContent ol li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-base);
  color: var(--clr-text-secondary);
  line-height: 1.6;
  counter-increment: seo-ol;
}

#seoContent ol li::before {
  content: counter(seo-ol);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  min-width: 20px;
  background: var(--clr-primary-tint);
  color: var(--clr-primary);
  border-radius: 50%;
  font-size: 11px;
  font-weight: 700;
  font-family: var(--font-heading);
  flex-shrink: 0;
  margin-top: 2px;
}

#seoContent table {
  width: 100%;
  border-collapse: collapse;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--clr-border);
  margin-bottom: var(--space-6);
  max-width: 72ch;
}

#seoContent table th {
  background: var(--clr-surface-2);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--clr-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: var(--space-2) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--clr-border);
}

#seoContent table td {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--clr-text-secondary);
  border-bottom: 1px solid var(--clr-border);
  vertical-align: top;
}

#seoContent table tr:last-child td {
  border-bottom: none;
}

#faqSection {
  background: var(--clr-bg-elevated);
  border-top: 1px solid var(--clr-border);
  padding: var(--space-12) var(--gutter);
}

.faq-inner {
  max-width: 760px;
  margin: 0 auto;
}

.faq-heading {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--clr-text-primary);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-2);
}

.faq-subheading {
  font-size: var(--text-base);
  color: var(--clr-text-secondary);
  margin-bottom: var(--space-6);
}

.faq-list {
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  width: 100%;
  padding: var(--space-4) var(--space-5);
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--clr-text-primary);
  font-family: var(--font-body);
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.faq-question:hover {
  background: var(--clr-primary-ghost);
}

.faq-question[aria-expanded="true"] {
  color: var(--clr-primary);
}

.faq-chevron {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--clr-text-tertiary);
  transition: transform var(--dur-base) var(--ease-out);
}

.faq-question[aria-expanded="true"] .faq-chevron {
  transform: rotate(180deg);
  color: var(--clr-primary);
}

.faq-answer {
  display: none;
  padding: 0 var(--space-5) var(--space-4);
  font-size: var(--text-sm);
  color: var(--clr-text-secondary);
  line-height: 1.7;
  background: var(--clr-surface);
}

.faq-answer.open {
  display: block;
}

.site-footer {
  background: var(--clr-bg-elevated);
  border-top: 1px solid var(--clr-border);
  padding: var(--space-8) var(--gutter);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  max-width: var(--content-max);
  margin: 0 auto;
}

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

.site-footer__name {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--clr-text-primary);
}

.site-footer__links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.site-footer__links a {
  font-size: var(--text-xs);
  color: var(--clr-text-tertiary);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}

.site-footer__links a:hover {
  color: var(--clr-primary);
  text-decoration: none;
}

.site-footer__copy {
  font-size: var(--text-xs);
  color: var(--clr-text-tertiary);
  width: 100%;
}

#toastContainer {
  position: fixed;
  bottom: var(--space-5);
  right: var(--space-5);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
  max-width: 320px;
  width: calc(100vw - var(--space-10));
}

.toast-msg {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--clr-text-primary);
  border-left: 3px solid var(--clr-border-strong);
  animation: toastSlide 0.3s var(--ease-spring) forwards;
  pointer-events: auto;
  transition: opacity 0.3s ease;
}

.toast-msg.success { border-left-color: var(--clr-success); }
.toast-msg.error { border-left-color: var(--clr-error); }
.toast-msg.info { border-left-color: var(--clr-info); }
.toast-msg.warning { border-left-color: var(--clr-warning); }

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes toastSlide {
  from {
    opacity: 0;
    transform: translateX(24px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

.tool-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .tool-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .tool-grid {
    grid-template-columns: 380px 1fr;
  }
}

.action-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

@media (max-width: 480px) {
  .action-row {
    grid-template-columns: 1fr;
  }
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--clr-surface-2);
}

::-webkit-scrollbar-thumb {
  background: rgba(108, 59, 255, 0.25);
  border-radius: var(--radius-pill);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(108, 59, 255, 0.45);
}