:root {
  --bg: #07111f;
  --bg-soft: #0b1728;
  --surface: #0f1f33;
  --surface-hover: #142943;
  --border: rgba(91, 220, 255, 0.16);

  --cyan: #35d9ff;
  --cyan-bright: #6ee7ff;
  --violet: #8b7cff;
  --purple: #a78bfa;

  --text: #f4f8fc;
  --text-soft: #b7c5d6;
  --text-muted: #7f91a6;

  --success: #43e6a4;
  --warning: #ffc857;
  --danger: #ff6b81;

  --shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
  --glow: 0 0 35px rgba(53, 217, 255, 0.12);

  --container: 1180px;
  --radius: 18px;
  --transition: 180ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 10%, rgba(53, 217, 255, 0.08), transparent 28%),
    radial-gradient(circle at 85% 20%, rgba(139, 124, 255, 0.08), transparent 30%),
    var(--bg);
  color: var(--text);
  font-family:
    Inter, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

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

button {
  cursor: pointer;
}

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

.container {
  width: min(100% - 32px, var(--container));
  margin-inline: auto;
}

/* Accessibility */

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 9999;
  padding: 10px 16px;
  background: var(--cyan);
  color: #031019;
  font-weight: 700;
  border-radius: 8px;
}

.skip-link:focus {
  top: 16px;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border);
  background: rgba(7, 17, 31, 0.88);
  backdrop-filter: blur(16px);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(53, 217, 255, 0.35);
  border-radius: 12px;
  background: rgba(53, 217, 255, 0.08);
  box-shadow: var(--glow);
  font-size: 21px;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 17px;
  letter-spacing: 0.02em;
}

.brand small {
  margin-top: -2px;
  color: var(--cyan);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.28em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.main-nav a {
  color: var(--text-soft);
  font-size: 14px;
  font-weight: 600;
  transition: color var(--transition);
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--cyan-bright);
}

.menu-toggle {
  display: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 10px;
  padding: 8px 11px;
}

/* Typography */

.eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--cyan);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

h1,
h2,
h3 {
  line-height: 1.15;
}

h1 {
  max-width: 760px;
  font-size: clamp(2.6rem, 7vw, 5.2rem);
  letter-spacing: -0.045em;
}

h1 span {
  display: block;
  color: var(--cyan);
  text-shadow: 0 0 30px rgba(53, 217, 255, 0.18);
}

h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  letter-spacing: -0.03em;
}

h3 {
  font-size: 1.25rem;
}

p {
  color: var(--text-soft);
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 750;
  transition:
    transform var(--transition),
    border-color var(--transition),
    background var(--transition),
    box-shadow var(--transition);
}

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

.btn-primary {
  background: var(--cyan);
  color: #031019;
  box-shadow: 0 10px 30px rgba(53, 217, 255, 0.16);
}

.btn-primary:hover {
  background: var(--cyan-bright);
  box-shadow: 0 14px 36px rgba(53, 217, 255, 0.22);
}

.btn-secondary {
  border-color: var(--border);
  background: rgba(15, 31, 51, 0.75);
  color: var(--text);
}

.btn-secondary:hover {
  border-color: rgba(53, 217, 255, 0.4);
  background: var(--surface-hover);
}

/* Sections */

section {
  padding: 100px 0;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 48px;
}

.section-heading p {
  max-width: 650px;
  margin-top: 16px;
  font-size: 1.05rem;
}

/* Hero */

.hero {
  position: relative;
  overflow: hidden;
  min-height: 720px;
  display: grid;
  align-items: center;
  padding: 100px 0;
}

.hero::before {
  content: "";
  position: absolute;
  width: 560px;
  height: 560px;
  top: -260px;
  right: -180px;
  border-radius: 50%;
  background: rgba(139, 124, 255, 0.08);
  filter: blur(20px);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 70px;
}

.hero-content > p {
  max-width: 670px;
  margin-top: 24px;
  font-size: 1.12rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 26px;
  color: var(--text-muted);
  font-size: 13px;
}

.hero-trust span::first-letter {
  color: var(--success);
}

.hero-panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: rgba(15, 31, 51, 0.72);
  box-shadow: var(--shadow), var(--glow);
}

.terminal-top {
  display: flex;
  gap: 7px;
  padding: 15px 18px;
  border-bottom: 1px solid var(--border);
}

.terminal-top span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--text-muted);
}

.terminal-content {
  padding: 30px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.terminal-label {
  margin-bottom: 24px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.terminal-line {
  margin: 13px 0;
  color: var(--text-muted);
  font-size: 13px;
}

.terminal-line span {
  color: var(--cyan);
}

.terminal-line strong {
  color: var(--success);
}

.terminal-progress {
  height: 7px;
  margin: 28px 0 20px;
  overflow: hidden;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.07);
}

.terminal-progress div {
  width: 72%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
}

.terminal-status {
  color: var(--cyan-bright);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

/* Learning model */

.learning-model {
  background: linear-gradient(
    180deg,
    transparent,
    rgba(15, 31, 51, 0.42),
    transparent
  );
}

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

.model-card {
  position: relative;
  padding: 30px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(15, 31, 51, 0.65);
  box-shadow: var(--shadow);
}

.model-card.featured {
  border-color: rgba(53, 217, 255, 0.35);
  box-shadow: var(--shadow), var(--glow);
}

.model-number {
  position: absolute;
  top: 20px;
  right: 22px;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 800;
}

.model-icon {
  margin-bottom: 24px;
  font-size: 32px;
}

.model-card p {
  margin-top: 12px;
}

/* Topic cards */

.topic-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.topic-card {
  min-height: 260px;
  display: flex;
  flex-direction: column;
  padding: 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition:
    transform var(--transition),
    border-color var(--transition),
    background var(--transition),
    box-shadow var(--transition);
}

.topic-card:hover {
  transform: translateY(-5px);
  border-color: rgba(53, 217, 255, 0.38);
  background: var(--surface-hover);
  box-shadow: var(--glow);
}

.topic-icon {
  margin-bottom: 18px;
  font-size: 30px;
}

.topic-tag {
  color: var(--cyan);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.topic-card h3 {
  margin-top: 8px;
}

.topic-card p {
  margin-top: 10px;
  font-size: 14px;
}

.topic-link {
  margin-top: auto;
  padding-top: 20px;
  color: var(--cyan-bright);
  font-size: 13px;
  font-weight: 800;
}

/* Practice */

.practice-section {
  background: rgba(11, 23, 40, 0.72);
}

.lab-card {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 34px;
  padding: 34px;
  border: 1px solid rgba(53, 217, 255, 0.2);
  border-radius: 22px;
  background:
    radial-gradient(circle at 90% 20%, rgba(139, 124, 255, 0.09), transparent 35%),
    var(--surface);
  box-shadow: var(--shadow);
}

.lab-badge,
.coming-soon {
  display: inline-block;
  color: var(--cyan);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.lab-intro h3 {
  margin-top: 10px;
  font-size: 1.7rem;
}

.lab-intro p {
  margin-top: 14px;
}

.safety-note {
  margin-top: 22px;
  padding: 14px;
  border-left: 3px solid var(--warning);
  background: rgba(255, 200, 87, 0.06);
  color: var(--text-soft);
  font-size: 13px;
}

.password-demo label {
  display: block;
  margin-bottom: 9px;
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
}

.input-row {
  display: flex;
  gap: 10px;
}

.input-row input {
  width: 100%;
  min-width: 0;
  height: 48px;
  padding: 0 15px;
  border: 1px solid var(--border);
  border-radius: 11px;
  outline: none;
  background: #081523;
  color: var(--text);
}

.input-row input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(53, 217, 255, 0.08);
}

.password-demo small {
  display: block;
  margin-top: 9px;
  color: var(--text-muted);
}

.analysis-result {
  min-height: 120px;
  margin-top: 22px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #081523;
}

.result-placeholder {
  color: var(--text-muted);
  font-size: 14px;
}

/* Challenges */

.challenge-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.challenge-card {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.challenge-card > span:first-child {
  display: block;
  margin-bottom: 18px;
  font-size: 30px;
}

.challenge-card p {
  margin: 12px 0 22px;
  font-size: 14px;
}

.coming-soon {
  color: var(--text-muted);
}

/* About */

.about {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: rgba(15, 31, 51, 0.4);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: start;
}

.about-grid p + p {
  margin-top: 18px;
}

/* FAQ */

.faq-list {
  max-width: 850px;
}

.faq-list details {
  border-top: 1px solid var(--border);
  padding: 20px 0;
}

.faq-list details:last-child {
  border-bottom: 1px solid var(--border);
}

.faq-list summary {
  cursor: pointer;
  color: var(--text);
  font-weight: 700;
}

.faq-list p {
  max-width: 760px;
  padding-top: 14px;
}

/* Footer */

.site-footer {
  padding: 70px 0 25px;
  background: #050d18;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 40px;
}

.footer-brand {
  margin-bottom: 18px;
}

.footer-grid > div > p {
  max-width: 300px;
  font-size: 14px;
}

.footer-grid h3 {
  margin-bottom: 14px;
  font-size: 14px;
}

.footer-grid a:not(.brand) {
  display: block;
  width: fit-content;
  margin: 8px 0;
  color: var(--text-muted);
  font-size: 13px;
}

.footer-grid a:not(.brand):hover {
  color: var(--cyan);
}

.footer-bottom {
  margin-top: 50px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 12px;
}

/* Responsive */

@media (max-width: 900px) {
  .hero-grid,
  .lab-card,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .model-grid,
  .topic-grid,
  .challenge-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero {
    min-height: auto;
  }

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

@media (max-width: 680px) {
  section {
    padding: 75px 0;
  }

  .container {
    width: min(100% - 24px, var(--container));
  }

  .menu-toggle {
    display: block;
  }

  .main-nav {
    position: absolute;
    top: 76px;
    left: 12px;
    right: 12px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: rgba(7, 17, 31, 0.98);
    box-shadow: var(--shadow);
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    padding: 13px;
    border-radius: 9px;
  }

  .main-nav a:hover {
    background: var(--surface);
  }

  .model-grid,
  .topic-grid,
  .challenge-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 75px;
  }

  .hero-actions,
  .input-row {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .hero-trust {
    flex-direction: column;
    gap: 8px;
  }

  .lab-card {
    padding: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}

/* 2FA Demonstration */
#two-factor .demo-card {
  margin-top: 32px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
}

#two-factor .demo-card > h3 {
  margin: 8px 0 10px;
  font-size: 1.5rem;
}

#two-factor .demo-card > p {
  color: var(--muted);
  line-height: 1.7;
}

#two-factor .demo-question {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

#two-factor .demo-question h4 {
  margin-bottom: 14px;
  font-size: 1rem;
}

#two-factor .demo-options {
  display: grid;
  gap: 10px;
}

#two-factor .demo-options button {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  font: inherit;
  line-height: 1.5;
}

#two-factor .demo-options button:hover,
#two-factor .demo-options button:focus-visible {
  border-color: var(--cyan);
  outline: none;
}

#two-factor .demo-options button.selected {
  border-color: var(--cyan);
  background: rgba(53, 217, 255, 0.08);
}

#two-factor .demo-options button.correct {
  border-color: var(--success);
}

#two-factor .demo-options button.incorrect {
  border-color: var(--danger);
}

#two-factor .demo-feedback {
  min-height: 24px;
  margin-top: 14px;
  color: var(--muted);
  line-height: 1.6;
}

/* Safe Browsing Demonstration */
#safe-browsing .demo-card {
  margin-top: 32px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
}

#safe-browsing .demo-card > h3 {
  margin: 8px 0 10px;
  font-size: 1.5rem;
}

#safe-browsing .demo-card > p {
  color: var(--muted);
  line-height: 1.7;
}

#safe-browsing .demo-question {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

#safe-browsing .demo-question h4 {
  margin-bottom: 14px;
  font-size: 1rem;
}

#safe-browsing .demo-options {
  display: grid;
  gap: 10px;
}

#safe-browsing .demo-options button {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  font: inherit;
  line-height: 1.5;
}

#safe-browsing .demo-options button:hover,
#safe-browsing .demo-options button:focus-visible {
  border-color: var(--cyan);
  outline: none;
}

#safe-browsing .demo-options button.selected {
  border-color: var(--cyan);
  background: rgba(53, 217, 255, 0.08);
}

#safe-browsing .demo-options button.correct {
  border-color: var(--success);
}

#safe-browsing .demo-options button.incorrect {
  border-color: var(--danger);
}

#safe-browsing .demo-feedback {
  min-height: 24px;
  margin-top: 14px;
  color: var(--muted);
  line-height: 1.6;
}

/* Malware Demonstration */
#malware-demo {
  margin-top: 32px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
}

#malware-demo > h3 {
  margin: 8px 0 10px;
  font-size: 1.5rem;
}

#malware-demo > p {
  color: var(--muted);
  line-height: 1.7;
}

#malware-demo .demo-question {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

#malware-demo .demo-question h4 {
  margin-bottom: 14px;
  font-size: 1rem;
}

#malware-demo .demo-options {
  display: grid;
  gap: 10px;
}

#malware-demo .demo-options button {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  font: inherit;
  line-height: 1.5;
}

#malware-demo .demo-options button:hover,
#malware-demo .demo-options button:focus-visible {
  border-color: var(--cyan);
  outline: none;
}

#malware-demo .demo-options button.selected {
  border-color: var(--cyan);
  background: rgba(53, 217, 255, 0.08);
}

#malware-demo .demo-options button.correct {
  border-color: var(--success);
}

#malware-demo .demo-options button.incorrect {
  border-color: var(--danger);
}

#malware-demo .demo-feedback {
  min-height: 24px;
  margin-top: 14px;
  color: var(--muted);
  line-height: 1.6;
}

/* Social Engineering Demonstration */
#social-engineering-demo {
  margin-top: 32px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
}

#social-engineering-demo > h3 {
  margin: 8px 0 10px;
  font-size: 1.5rem;
}

#social-engineering-demo > p {
  color: var(--muted);
  line-height: 1.7;
}

#social-engineering-demo .demo-question {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

#social-engineering-demo .demo-question h4 {
  margin-bottom: 14px;
  font-size: 1rem;
}

#social-engineering-demo .demo-options {
  display: grid;
  gap: 10px;
}

#social-engineering-demo .demo-options button {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  font: inherit;
  line-height: 1.5;
}

#social-engineering-demo .demo-options button:hover,
#social-engineering-demo .demo-options button:focus-visible {
  border-color: var(--cyan);
  outline: none;
}

#social-engineering-demo .demo-options button.selected {
  border-color: var(--cyan);
  background: rgba(53, 217, 255, 0.08);
}

#social-engineering-demo .demo-options button.correct {
  border-color: var(--success);
}

#social-engineering-demo .demo-options button.incorrect {
  border-color: var(--danger);
}

#social-engineering-demo .demo-feedback {
  min-height: 24px;
  margin-top: 14px;
  color: var(--muted);
  line-height: 1.6;
}

/* Social Engineering Demonstration */
#social-engineering-demo {
  margin-top: 32px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
}

#social-engineering-demo > h3 {
  margin: 8px 0 10px;
  font-size: 1.5rem;
}

#social-engineering-demo > p {
  color: var(--muted);
  line-height: 1.7;
}

#social-engineering-demo .demo-question {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

#social-engineering-demo .demo-question h4 {
  margin-bottom: 14px;
  font-size: 1rem;
}

#social-engineering-demo .demo-options {
  display: grid;
  gap: 10px;
}

#social-engineering-demo .demo-options button {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  font: inherit;
  line-height: 1.5;
}

#social-engineering-demo .demo-options button:hover,
#social-engineering-demo .demo-options button:focus-visible {
  border-color: var(--cyan);
  outline: none;
}

#social-engineering-demo .demo-options button.selected {
  border-color: var(--cyan);
  background: rgba(53, 217, 255, 0.08);
}

#social-engineering-demo .demo-options button.correct {
  border-color: var(--success);
}

#social-engineering-demo .demo-options button.incorrect {
  border-color: var(--danger);
}

#social-engineering-demo .demo-feedback {
  min-height: 24px;
  margin-top: 14px;
  color: var(--muted);
  line-height: 1.6;
}

/* Site Search */

.search-toggle {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-soft);
  border-radius: 10px;
  padding: 8px 12px;
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.search-toggle:hover,
.search-toggle:focus-visible {
  color: var(--cyan-bright);
  border-color: var(--cyan);
  background: var(--surface-strong);
}

.site-search {
  border-bottom: 1px solid var(--border);
  background: rgba(10, 24, 43, 0.98);
  padding: 18px 0 22px;
}

.site-search[hidden] {
  display: none;
}

.site-search label {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
  font-size: 14px;
  font-weight: 800;
}

.site-search-row {
  display: flex;
  gap: 10px;
}

.site-search-row input {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  padding: 12px 14px;
  font: inherit;
  outline: none;
}

.site-search-row input::placeholder {
  color: var(--text-muted);
}

.site-search-row input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.12);
}

.site-search-results {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.search-result {
  display: block;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  padding: 14px 16px;
  transition: border-color var(--transition), transform var(--transition);
}

.search-result:hover,
.search-result:focus-visible {
  border-color: var(--cyan);
  transform: translateY(-1px);
}

.search-result strong {
  display: block;
  color: var(--text);
  font-size: 15px;
}

.search-result span {
  display: block;
  margin-top: 5px;
  color: var(--text-soft);
  font-size: 13px;
  line-height: 1.55;
}

.search-empty {
  margin: 0;
  color: var(--text-soft);
  font-size: 14px;
}

@media (max-width: 900px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .search-toggle {
    margin-left: auto;
  }
}

@media (max-width: 680px) {
  .search-toggle {
    order: 2;
  }

  .menu-toggle {
    order: 3;
  }

  .main-nav {
    order: 4;
    width: 100%;
  }

  .site-search-row {
    flex-direction: column;
  }

  .site-search-row .btn {
    width: 100%;
  }
}

/* Learning Progress */

.progress-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin: 0 0 28px;
  padding: 22px 24px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgba(34, 211, 238, 0.08), rgba(124, 58, 237, 0.08)),
    var(--surface);
}

.progress-panel h3 {
  margin: 5px 0 6px;
  color: var(--text);
  font-size: 20px;
}

.progress-panel p {
  margin: 0;
  max-width: 620px;
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.6;
}

.progress-meter {
  flex: 0 0 210px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.progress-meter-track {
  flex: 1;
  height: 9px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.progress-meter-track span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  transition: width 350ms ease;
}

.progress-meter strong {
  min-width: 42px;
  color: var(--cyan-bright);
  font-size: 13px;
  text-align: right;
}

@media (max-width: 680px) {
  .progress-panel {
    align-items: stretch;
    flex-direction: column;
    gap: 18px;
    padding: 20px;
  }

  .progress-meter {
    flex-basis: auto;
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .progress-meter-track span {
    transition: none;
  }
}