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

:root {
  --ink: #132238;
  --muted: #5e6b7a;
  --line: #dce3ea;
  --paper: #ffffff;
  --soft: #f4f8fb;
  --brand: #0077b6;
  --brand-dark: #06476f;
  --accent: #22a06b;
  --warning: #f4a261;
}

body {
  font-family: "Segoe UI", Arial, sans-serif;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
}

a {
  color: inherit;
}

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

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

.topbar {
  background: var(--brand-dark);
  color: #d9f2ff;
  font-size: 14px;
}

.topbar-inner {
  min-height: 38px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.topbar a {
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}

.navbar {
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.nav-inner {
  min-height: 72px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--brand-dark);
  text-decoration: none;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 24px;
  align-items: center;
}

.nav-links a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
}

.nav-links a:hover {
  color: var(--brand);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.hero {
  background: #eef7fb;
  padding: 72px 0 56px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.88fr);
  gap: 44px;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  color: var(--brand);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.hero h1 {
  font-size: 52px;
  line-height: 1.05;
  margin-bottom: 18px;
  color: var(--brand-dark);
}

.hero p {
  font-size: 19px;
  color: var(--muted);
  max-width: 680px;
  margin-bottom: 26px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.trust-row span {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--brand-dark);
  font-size: 13px;
  font-weight: 800;
  padding: 7px 12px;
}

.btn-primary,
.btn-secondary {
  min-height: 46px;
  padding: 0 22px;
  border-radius: 6px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}

.link-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-dark);
}

.btn-secondary {
  background: #fff;
  color: var(--brand-dark);
  border-color: var(--line);
}

.btn-secondary:hover {
  border-color: var(--brand);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: 560px;
}

.hero-metrics div {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
}

.hero-metrics strong {
  display: block;
  color: var(--brand);
  font-size: 24px;
}

.hero-metrics span {
  color: var(--muted);
  font-size: 13px;
}

.hero-media {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(19, 34, 56, 0.18);
  aspect-ratio: 4 / 3;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

section {
  padding: 72px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading h2,
.resources h2,
.payment h2,
.support-task h2,
.enroll h2 {
  font-size: 34px;
  line-height: 1.18;
  color: var(--ink);
}

.section-heading p,
.resources p,
.payment p,
.support-task p,
.enroll p {
  color: var(--muted);
}

.pain-points,
.courses,
.payment,
.support-task,
.process-section,
.faq-section,
.track-ticket {
  background: var(--soft);
}

.problem-grid,
.path-grid,
.course-grid,
.video-grid,
.lab-grid,
.services-grid,
.process-grid,
.faq-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.problem-item,
.path-card,
.course-card,
.video-card,
.lab-card,
.service-card,
.resource-item,
.step-item,
.faq-grid details,
.ticket-result,
.support-note,
.bank-card,
.form {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(19, 34, 56, 0.06);
}

.problem-item {
  padding: 20px;
  font-weight: 700;
}

.service-card {
  padding: 22px;
}

.lab-card {
  padding: 22px;
  color: inherit;
  text-decoration: none;
}

.service-card h3 {
  color: var(--brand-dark);
  margin-bottom: 8px;
}

.lab-card h3 {
  color: var(--brand-dark);
  margin-bottom: 8px;
}

.lab-card p {
  color: var(--muted);
}

.service-card p {
  color: var(--muted);
}

.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: #e8f3f8;
  color: var(--brand-dark);
  font-weight: 900;
  margin-bottom: 12px;
}

.mentor-grid {
  display: grid;
  grid-template-columns: minmax(320px, 0.78fr) minmax(0, 1fr);
  gap: 34px;
  align-items: center;
}

.mentor-photo {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 18px 44px rgba(19, 34, 56, 0.15);
}

.mentor-photo img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.mentor-section h2 {
  color: var(--brand-dark);
  font-size: 34px;
  line-height: 1.18;
  margin-bottom: 14px;
}

.mentor-section p {
  color: var(--muted);
}

.cred-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 22px;
}

.cred-grid div {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

.cred-grid strong,
.cred-grid span {
  display: block;
}

.cred-grid strong {
  color: var(--brand-dark);
  margin-bottom: 6px;
}

.cred-grid span {
  color: var(--muted);
  font-size: 14px;
}

.section-actions {
  margin-top: 24px;
}

.faq-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.faq-grid details {
  padding: 20px;
}

.faq-grid summary {
  cursor: pointer;
  color: var(--brand-dark);
  font-weight: 800;
}

.faq-grid p {
  color: var(--muted);
  margin-top: 10px;
}

.path-card,
.course-card,
.video-card {
  overflow: hidden;
}

.path-card {
  padding: 22px;
}

.path-card h3,
.course-card h3,
.video-card h3 {
  font-size: 20px;
  line-height: 1.25;
  margin-bottom: 10px;
  color: var(--brand-dark);
}

.path-card p,
.course-card p,
.video-card p {
  color: var(--muted);
}

.path-meta,
.course-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: #e8f3f8;
  color: var(--brand-dark);
  font-size: 12px;
  font-weight: 700;
}

.course-image,
.video-thumb {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.course-image img,
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.course-body,
.video-body {
  padding: 20px;
}

.video-card a {
  display: inline-block;
  margin-top: 14px;
  color: var(--brand);
  font-weight: 800;
  text-decoration: none;
}

.resources-grid,
.payment-grid,
.enroll-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(360px, 1fr);
  gap: 34px;
  align-items: start;
}

.resource-list,
.payment-steps {
  display: grid;
  gap: 14px;
}

.resource-item,
.step-item {
  padding: 18px;
}

.resource-item h3,
.step-item h3 {
  font-size: 18px;
  color: var(--brand-dark);
  margin-bottom: 6px;
}

.bank-card {
  padding: 24px;
}

.bank-card h3 {
  margin-bottom: 18px;
  color: var(--brand-dark);
}

.bank-row {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.bank-row span {
  color: var(--muted);
}

.bank-row strong {
  text-align: right;
}

.bank-card p {
  margin-top: 18px;
  color: var(--muted);
}

.clickable-card {
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.clickable-card:hover,
.clickable-card:focus {
  transform: translateY(-4px);
  border-color: rgba(0, 119, 182, 0.45);
  box-shadow: 0 14px 32px rgba(19, 34, 56, 0.12);
  outline: none;
}

.path-card,
.course-card,
.resource-item {
  color: inherit;
  text-decoration: none;
}

.card-link {
  display: inline-block;
  margin-top: 16px;
  color: var(--brand);
  font-weight: 800;
}

.detail-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 16px 42px rgba(19, 34, 56, 0.1);
  margin-top: 24px;
  padding: 28px;
}

.detail-panel[hidden] {
  display: none;
}

.detail-header {
  max-width: 860px;
  margin-bottom: 22px;
}

.detail-header h3 {
  color: var(--brand-dark);
  font-size: 28px;
  margin-bottom: 8px;
}

.detail-header p {
  color: var(--muted);
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.detail-grid h4 {
  color: var(--brand-dark);
  margin-bottom: 12px;
}

.concept-list,
.check-list {
  display: grid;
  gap: 10px;
}

.concept-item {
  border-bottom: 1px solid var(--line);
  padding-bottom: 10px;
}

.concept-item strong {
  display: block;
  margin-bottom: 4px;
}

.concept-item p,
.check-list li {
  color: var(--muted);
}

.check-list {
  padding-left: 18px;
}

.outcome-box {
  background: #eef7fb;
  border-left: 4px solid var(--brand);
  border-radius: 6px;
  margin-top: 22px;
  padding: 16px;
  color: var(--ink);
}

.qr-box {
  display: flex;
  justify-content: center;
  background: var(--soft);
  border: 1px dashed var(--line);
  border-radius: 8px;
  margin-bottom: 18px;
  padding: 18px;
}

.qr-box img {
  width: 220px;
  height: 220px;
}

.page-main {
  background: var(--paper);
}

.content-hero {
  background: var(--soft);
  padding: 54px 0;
}

.content-hero h1 {
  color: var(--brand-dark);
  font-size: 42px;
  line-height: 1.12;
  max-width: 920px;
  margin-bottom: 12px;
}

.content-hero p {
  color: var(--muted);
  max-width: 860px;
  font-size: 18px;
}

.back-link {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--brand);
  font-weight: 800;
  text-decoration: none;
}

.content-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.78fr);
  gap: 24px;
  align-items: start;
}

.content-block {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(19, 34, 56, 0.06);
  padding: 26px;
}

.content-block h2 {
  color: var(--brand-dark);
  margin-bottom: 14px;
}

.content-block h3 {
  margin-top: 18px;
  margin-bottom: 7px;
  color: var(--ink);
}

.content-block p {
  color: var(--muted);
}

.narrow {
  max-width: 760px;
}

.support-note {
  padding: 18px;
  margin-top: 22px;
}

.support-note strong,
.support-note span {
  display: block;
}

.support-note span {
  color: var(--muted);
  margin-top: 4px;
}

.form {
  padding: 24px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  margin-bottom: 7px;
  font-weight: 700;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  min-height: 44px;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font: inherit;
  color: var(--ink);
}

.form-group textarea {
  resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus,
.track-form input:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(0, 119, 182, 0.14);
}

.form-message {
  margin-top: 16px;
  padding: 14px;
  border-radius: 6px;
  font-weight: 700;
}

.form-message.success {
  background: #dff5e8;
  color: #155d38;
  border: 1px solid #bce7cf;
}

.form-message.error {
  background: #ffe8e8;
  color: #9f1d1d;
  border: 1px solid #ffc9c9;
}

.track-form {
  max-width: 640px;
  display: flex;
  gap: 10px;
}

.track-form input {
  flex: 1;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font: inherit;
}

.ticket-result {
  max-width: 700px;
  margin-top: 24px;
  padding: 24px;
}

.ticket-result h3 {
  color: var(--brand-dark);
  margin-bottom: 14px;
}

.result-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.result-row span {
  color: var(--muted);
  word-break: break-word;
}

.status-open {
  color: #c2410c;
  font-weight: 800;
}

.status-in-progress {
  color: #a16207;
  font-weight: 800;
}

.status-closed {
  color: #15803d;
  font-weight: 800;
}

.footer {
  background: var(--brand-dark);
  color: #dbeaf2;
  padding: 56px 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
  margin-bottom: 28px;
}

.footer-section h3 {
  color: #fff;
  margin-bottom: 12px;
}

.footer-section p,
.footer-section a {
  color: #dbeaf2;
}

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

.footer-section li {
  margin-bottom: 8px;
}

.footer-divider {
  border: none;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  margin: 22px 0;
}

.footer-copyright {
  color: #a9c6d6;
  font-size: 14px;
}

/* ============ CERT STRIP ============ */
.cert-strip {
  background: var(--soft);
  padding: 28px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.cert-label {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
}

.cert-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  align-items: center;
}

.cert-badge {
  padding: 8px 18px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.02em;
  border: 1.5px solid transparent;
}

.cert-cisco    { background: #e8f3f8; color: #1d6fa4; border-color: #b8d9ee; }
.cert-fortinet { background: #fff3e8; color: #c0430a; border-color: #ffd1a8; }
.cert-paloalto { background: #fff8e8; color: #a06000; border-color: #fde4a0; }
.cert-mikrotik { background: #f0f8e8; color: #3a6e0a; border-color: #c0e090; }
.cert-ruijie   { background: #f0e8f8; color: #6a2da0; border-color: #d4b0f0; }
.cert-eveng    { background: #e8f8f0; color: #0a6e4a; border-color: #90e0c0; }
.cert-linux    { background: #f8f0e8; color: #6e4a0a; border-color: #e0c090; }

/* ============ MENTOR CARD INFO ============ */
.mentor-card-info {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0 0 8px 8px;
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mentor-card-info strong {
  color: var(--brand-dark);
  font-size: 16px;
}

.mentor-card-info span {
  color: var(--muted);
  font-size: 13px;
}

.mentor-socials a {
  color: var(--brand);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.mentor-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

/* ============ HERO METRICS 4 COLS ============ */
.hero-metrics {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* ============ TESTIMONIALS ============ */
.testimonials-section {
  background: var(--soft);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.testimonial-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 24px;
  box-shadow: 0 4px 16px rgba(19, 34, 56, 0.06);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.testimonial-highlight {
  display: inline-block;
  background: #eef7fb;
  color: var(--brand-dark);
  font-size: 12px;
  font-weight: 800;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid #c4dfe9;
}

.testimonial-card blockquote {
  color: var(--ink);
  font-size: 15px;
  line-height: 1.65;
  flex: 1;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 4px;
}

.author-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-size: 18px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.testimonial-author > div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.testimonial-author strong {
  color: var(--ink);
  font-size: 14px;
}

.testimonial-author span {
  color: var(--muted);
  font-size: 13px;
}

.author-company {
  font-size: 12px !important;
  color: var(--brand) !important;
  font-weight: 700;
}

@media (max-width: 900px) {
  .hero-grid,
  .resources-grid,
  .payment-grid,
  .mentor-grid,
  .content-layout,
  .enroll-grid {
    grid-template-columns: 1fr;
  }

  .problem-grid,
  .path-grid,
  .course-grid,
  .video-grid,
  .lab-grid,
  .services-grid,
  .process-grid,
  .cred-grid,
  .detail-grid,
  .footer-content,
  .testimonials-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .topbar-inner,
  .nav-inner,
  .hero-actions,
  .track-form {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--line);
    padding: 12px 20px 20px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    z-index: 99;
    box-shadow: 0 8px 24px rgba(19, 34, 56, 0.1);
  }

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

  .nav-links li {
    border-bottom: 1px solid var(--line);
  }

  .nav-links a {
    display: block;
    padding: 12px 0;
  }

  .nav-links li:last-child {
    border-bottom: none;
  }

  .hero {
    padding-top: 48px;
  }

  .hero h1 {
    font-size: 38px;
  }

  .hero-metrics,
  .problem-grid,
  .path-grid,
  .course-grid,
  .video-grid,
  .lab-grid,
  .services-grid,
  .process-grid,
  .cred-grid,
  .faq-grid,
  .detail-grid,
  .footer-content,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  section {
    padding: 52px 0;
  }

  .section-heading h2,
  .resources h2,
  .payment h2,
  .support-task h2,
  .enroll h2 {
    font-size: 28px;
  }

  .result-row,
  .bank-row {
    grid-template-columns: 1fr;
    display: grid;
  }

  .bank-row strong {
    text-align: left;
  }
}