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

    :root {
      --navy-deep: #0b1120;
      --navy-rich: #0f172a;
      --teal-bright: #2dd4bf;
      --teal-deep: #0d9488;
      --teal-glow: rgba(45, 212, 191, 0.25);
      --gray-bg: #f9fafb;
      --white-pure: #ffffff;
      --gray-border: #eef2f6;
      --text-primary: #0f172a;
      --text-secondary: #334155;
      --text-muted: #5b6e8c;
      --shadow-sm: 0 12px 30px rgba(0, 0, 0, 0.04), 0 4px 8px rgba(0, 0, 0, 0.02);
      --shadow-md: 0 20px 35px -12px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.02);
      --shadow-glow: 0 20px 40px -12px rgba(13, 148, 136, 0.25);
      --radius-xl: 28px;
      --radius-lg: 20px;
      --radius-md: 16px;
      --transition-smooth: all 0.4s cubic-bezier(0.2, 0.9, 0.4, 1.1);
    }

    body {
      font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
      background: var(--gray-bg);
      color: var(--text-secondary);
      line-height: 1.5;
      scroll-behavior: smooth;
    }

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

    :focus-visible {
      outline: 3px solid rgba(45, 212, 191, 0.45);
      outline-offset: 2px;
      border-radius: 12px;
    }

    /* glassmorphism & micro-interactions */
    .glass-nav {
      background: rgba(11, 17, 32, 0.82);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      transition: var(--transition-smooth);
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 28px;
    }

    /* header layout */
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 18px 0;
      gap: 24px;
    }

    .logo {
      font-size: 1.8rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      background: linear-gradient(135deg, #ffffff 30%, #b9f5ec 90%);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      text-decoration: none;
    }
    .logo span {
      background: linear-gradient(135deg, var(--teal-bright), var(--teal-deep));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .nav-links {
      display: flex;
      gap: 8px;
      align-items: center;
    }

    .nav-item {
      position: relative;
    }

    .nav-trigger {
      background: transparent;
      border: none;
      padding: 10px 16px;
      font-weight: 500;
      font-size: 0.95rem;
      color: rgba(255, 255, 255, 0.85);
      display: flex;
      align-items: center;
      gap: 6px;
      border-radius: 100px;
      cursor: pointer;
      transition: background 0.2s ease;
      font-family: inherit;
    }
    .nav-trigger:hover {
      background: rgba(255, 255, 255, 0.08);
      color: white;
    }
    .nav-trigger svg {
      width: 14px;
      transition: transform 0.2s;
    }
    .dropdown-panel {
      position: absolute;
      top: calc(100% + 8px);
      left: 0;
      background: var(--white-pure);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      width: 280px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(-8px);
      transition: opacity 0.25s ease, transform 0.25s ease, visibility 0s linear 0.2s;
      border: 1px solid var(--gray-border);
      z-index: 200;
    }
    .nav-item.active .dropdown-panel {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
      transition-delay: 0s;
    }
    .dropdown-panel ul {
      list-style: none;
      padding: 12px;
    }
    .dropdown-panel li a {
      display: block;
      padding: 12px 14px;
      border-radius: 14px;
      text-decoration: none;
      transition: background 0.2s;
    }
    .dropdown-panel li a strong {
      display: block;
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-primary);
    }
    .dropdown-panel li a .desc {
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-top: 4px;
    }
    .dropdown-panel li a:hover {
      background: var(--gray-bg);
    }

    .btn-login {
      background: transparent;
      border: 1px solid rgba(255,255,255,0.3);
      padding: 8px 20px;
      border-radius: 40px;
      color: white;
      font-weight: 600;
      font-size: 0.85rem;
      transition: all 0.2s;
      cursor: pointer;
    }
    .btn-login:hover {
      background: rgba(45,212,191,0.15);
      border-color: var(--teal-bright);
    }

    .mobile-toggle {
      display: none;
      background: rgba(255,255,255,0.08);
      border: none;
      border-radius: 40px;
      width: 44px;
      height: 44px;
      align-items: center;
      justify-content: center;
      cursor: pointer;
    }
    .mobile-toggle svg {
      width: 22px;
      stroke: white;
    }

    /* hero section */
    .hero {
      padding: 60px 0 70px;
      position: relative;
      overflow: hidden;
    }
    .hero-glow {
      position: absolute;
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, rgba(45,212,191,0.2) 0%, rgba(13,148,136,0) 70%);
      top: -150px;
      right: -100px;
      border-radius: 50%;
      pointer-events: none;
    }
    .hero-card {
      background: var(--white-pure);
      border-radius: var(--radius-xl);
      padding: 54px 48px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--gray-border);
      transition: transform 0.3s ease;
      position: relative;
      backdrop-filter: blur(0px);
    }
    .hero-eyebrow {
      font-size: 0.7rem;
      text-transform: uppercase;
      letter-spacing: 3px;
      font-weight: 700;
      color: var(--teal-deep);
      margin-bottom: 20px;
    }
    .hero h1 {
      font-size: clamp(2.3rem, 5vw, 3.6rem);
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.2;
      color: var(--text-primary);
      max-width: 800px;
    }
    .hero-lead {
      font-size: 1.2rem;
      color: var(--text-secondary);
      margin-top: 24px;
      max-width: 600px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      margin: 36px 0 24px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: linear-gradient(105deg, var(--teal-bright), var(--teal-deep));
      border: none;
      padding: 14px 32px;
      border-radius: 60px;
      font-weight: 700;
      color: white;
      font-size: 0.95rem;
      transition: all 0.25s;
      box-shadow: 0 10px 18px -8px rgba(13,148,136,0.4);
      cursor: pointer;
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 20px 28px -12px rgba(13,148,136,0.5);
      filter: brightness(1.02);
    }
    .btn-outline {
      background: transparent;
      border: 1.5px solid var(--gray-border);
      padding: 12px 28px;
      border-radius: 60px;
      font-weight: 600;
      color: var(--text-primary);
      transition: all 0.2s;
      text-decoration: none;
    }
    .btn-outline:hover {
      border-color: var(--teal-bright);
      background: rgba(45,212,191,0.05);
    }
    .hero-note {
      font-size: 0.85rem;
      color: var(--text-muted);
      border-left: 3px solid var(--teal-bright);
      padding-left: 16px;
      margin-top: 20px;
    }

    /* pillars */
    .pillars-section {
      margin: 20px 0 60px;
    }
    .pillars-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      background: var(--white-pure);
      border-radius: var(--radius-xl);
      padding: 40px 44px;
      border: 1px solid var(--gray-border);
      box-shadow: var(--shadow-sm);
    }
    .pillar-item {
      position: relative;
      padding-left: 24px;
    }
    .pillar-item::before {
      content: '';
      position: absolute;
      left: 0;
      top: 8px;
      width: 4px;
      height: 32px;
      background: linear-gradient(180deg, var(--teal-bright), var(--teal-deep));
      border-radius: 4px;
    }
    .pillar-item h3 {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--text-primary);
      margin-bottom: 12px;
    }
    .pillar-item p {
      color: var(--text-secondary);
      line-height: 1.5;
    }

    /* animated feature cards (AI/experts) */
    .experts-showcase {
      margin: 60px 0 20px;
    }
    .section-badge {
      display: inline-block;
      background: rgba(45,212,191,0.12);
      padding: 6px 18px;
      border-radius: 100px;
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--teal-deep);
      margin-bottom: 24px;
    }
    .expert-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 28px;
      margin-top: 20px;
    }
    .expert-card {
      background: var(--white-pure);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      transition: var(--transition-smooth);
      border: 1px solid var(--gray-border);
      box-shadow: var(--shadow-sm);
    }
    .expert-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-glow);
      border-color: rgba(45,212,191,0.3);
    }
    .expert-icon {
      background: linear-gradient(135deg, #e6f7f5, #ffffff);
      width: 56px;
      height: 56px;
      border-radius: 30px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 28px;
      margin-bottom: 22px;
    }
    .expert-card h4 {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--text-primary);
    }
    .expert-card p {
      margin: 12px 0 18px;
      color: var(--text-muted);
    }
    .chip-available {
      font-size: 0.7rem;
      background: #e0f2fe;
      color: #0c4e6e;
      border-radius: 40px;
      padding: 4px 12px;
      display: inline-block;
    }

    /* footer */
    .footer {
      background: var(--navy-rich);
      margin-top: 80px;
      padding: 56px 0 32px;
      color: #b9c7d9;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 40px;
    }
    .footer-logo {
      font-size: 1.8rem;
      font-weight: 800;
      background: linear-gradient(135deg, white, var(--teal-bright));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      margin-bottom: 16px;
    }
    .footer h5 {
      color: #ffffffcc;
      font-size: 0.8rem;
      letter-spacing: 1px;
      margin-bottom: 20px;
    }
    .footer a {
      display: block;
      color: #b9c7d9;
      text-decoration: none;
      font-size: 0.85rem;
      margin: 8px 0;
      transition: color 0.2s;
    }
    .footer a:hover {
      color: var(--teal-bright);
    }
    .footer-bottom {
      border-top: 1px solid #1e2a3e;
      margin-top: 48px;
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      font-size: 0.75rem;
      flex-wrap: wrap;
    }

    @media (max-width: 980px) {
      .nav-links {
        display: none;
      }
      .mobile-toggle {
        display: flex;
      }
      .pillars-grid {
        grid-template-columns: 1fr;
        padding: 32px;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-card {
        padding: 36px 28px;
      }
    }
    @media (max-width: 640px) {
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .hero-actions {
        flex-direction: column;
      }
      .btn-primary, .btn-outline {
        text-align: center;
        justify-content: center;
      }
    }

    /* mobile menu overlay */
    .mobile-menu {
      position: fixed;
      inset: 0;
      background: var(--navy-deep);
      z-index: 200;
      padding: 80px 28px 40px;
      transform: translateX(100%);
      transition: transform 0.3s cubic-bezier(0.2, 0.9, 0.4, 1);
      overflow-y: auto;
    }
    .mobile-menu.open {
      transform: translateX(0);
    }
    .mobile-menu a, .mobile-menu details summary {
      color: white;
      font-weight: 500;
      padding: 14px 0;
      display: block;
      font-size: 1.1rem;
      border-bottom: 1px solid #2d3a4e;
    }
    .mobile-menu details summary {
      list-style: none;
      cursor: pointer;
    }
    .mobile-menu details[open] summary {
      color: var(--teal-bright);
    }
    .mobile-submenu {
      padding-left: 20px;
    }
    .close-menu {
      position: absolute;
      top: 24px;
      right: 24px;
      background: none;
      border: none;
      color: white;
      font-size: 32px;
      cursor: pointer;
    }

    /* Professional inner pages */
    .inner-page {
      padding: 32px 0 64px;
    }

    .inner-wrap {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 28px;
      display: grid;
      gap: 22px;
    }

    .page-hero {
      background: var(--white-pure);
      border: 1px solid var(--gray-border);
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-sm);
      padding: 34px 30px;
    }

    .page-kicker {
      margin: 0 0 12px;
      font-size: 0.7rem;
      font-weight: 700;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--teal-deep);
    }

    .page-hero h1 {
      margin: 0;
      max-width: 760px;
      font-size: clamp(2rem, 4vw, 3rem);
      line-height: 1.15;
      letter-spacing: -0.02em;
      color: var(--text-primary);
    }

    .page-hero .lead {
      margin-top: 12px;
      max-width: 760px;
      color: var(--text-secondary);
      line-height: 1.65;
    }

    .page-actions {
      margin-top: 20px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .page-actions .btn-primary,
    .page-actions .btn-outline {
      padding: 10px 18px;
      font-size: 0.86rem;
    }

    .content-grid {
      display: grid;
      gap: 16px;
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .content-card {
      background: var(--white-pure);
      border: 1px solid var(--gray-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      padding: 24px 22px;
    }

    .content-card h2 {
      margin: 0;
      font-size: 1.1rem;
      color: var(--text-primary);
    }

    .content-card p {
      margin: 10px 0 0;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    .bullet-list {
      list-style: none;
      margin: 14px 0 0;
      padding: 0;
      display: grid;
      gap: 9px;
    }

    .bullet-list li {
      position: relative;
      padding-left: 16px;
      color: var(--text-secondary);
      font-size: 0.92rem;
    }

    .bullet-list li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 8px;
      width: 7px;
      height: 7px;
      border-radius: 999px;
      background: linear-gradient(135deg, var(--teal-bright), var(--teal-deep));
    }

    .pathway {
      background: var(--white-pure);
      border: 1px solid var(--gray-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      padding: 24px 22px;
    }

    .pathway h2 {
      margin: 0;
      font-size: 1.1rem;
      color: var(--text-primary);
    }

    .steps {
      margin: 14px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 12px;
    }

    .steps li {
      display: grid;
      grid-template-columns: 30px 1fr;
      gap: 10px;
      align-items: start;
    }

    .steps .num {
      width: 30px;
      height: 30px;
      border-radius: 999px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 0.78rem;
      font-weight: 700;
      color: #fff;
      background: linear-gradient(135deg, var(--teal-bright), var(--teal-deep));
    }

    .steps strong {
      display: block;
      color: var(--text-primary);
      font-size: 0.92rem;
    }

    .steps span {
      display: block;
      margin-top: 2px;
      color: var(--text-secondary);
      font-size: 0.9rem;
      line-height: 1.55;
    }

    .back-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-muted);
      text-decoration: none;
    }

    .back-link:hover {
      color: var(--teal-deep);
    }

    @media (max-width: 980px) {
      .content-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 640px) {
      .inner-wrap {
        padding: 0 18px;
      }

      .page-hero {
        padding: 24px 20px;
      }
    }

    /* toast */
    .toast {
      position: fixed;
      bottom: 18px;
      left: 50%;
      transform: translateX(-50%) translateY(16px);
      background: rgba(11, 17, 32, 0.92);
      color: rgba(255, 255, 255, 0.92);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 999px;
      padding: 10px 14px;
      box-shadow: var(--shadow-md);
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.2s ease, transform 0.2s ease;
      font-size: 0.9rem;
      max-width: min(92vw, 680px);
      text-align: center;
      z-index: 999;
    }
    .toast.show {
      opacity: 1;
      transform: translateX(-50%) translateY(0);
    }

    /* forms (login/signup) */
    .auth-shell {
      min-height: calc(100vh - 130px);
      display: grid;
      align-items: center;
      padding: 36px 0 76px;
    }
    .auth-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 22px;
      align-items: start;
    }
    .auth-card {
      background: var(--white-pure);
      border: 1px solid var(--gray-border);
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-sm);
      padding: 34px 30px;
    }
    .auth-card h1 {
      margin: 0;
      font-size: clamp(1.9rem, 3.5vw, 2.6rem);
      letter-spacing: -0.02em;
      color: var(--text-primary);
    }
    .auth-lead {
      margin-top: 10px;
      color: var(--text-muted);
      line-height: 1.65;
    }
    .form-grid {
      margin-top: 22px;
      display: grid;
      gap: 14px;
    }
    .field label {
      display: block;
      font-weight: 700;
      font-size: 0.85rem;
      color: var(--text-primary);
      margin-bottom: 8px;
    }
    .input {
      width: 100%;
      border: 1px solid var(--gray-border);
      border-radius: 16px;
      padding: 12px 14px;
      font: inherit;
      background: #fff;
      color: var(--text-primary);
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }
    .input::placeholder {
      color: rgba(91, 110, 140, 0.8);
    }
    .input:focus {
      outline: none;
      border-color: rgba(45, 212, 191, 0.55);
      box-shadow: 0 0 0 4px rgba(45, 212, 191, 0.16);
    }
    .row {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
      align-items: center;
      margin-top: 8px;
    }
    .muted {
      color: var(--text-muted);
      font-size: 0.9rem;
    }
    .link {
      color: var(--teal-deep);
      font-weight: 700;
      font-size: 0.9rem;
    }
    .link:hover {
      text-decoration: underline;
    }
    .check {
      display: inline-flex;
      gap: 10px;
      align-items: center;
      font-size: 0.92rem;
      color: var(--text-secondary);
      user-select: none;
    }
    .check input {
      width: 18px;
      height: 18px;
      accent-color: var(--teal-deep);
    }
    .form-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      margin-top: 14px;
      align-items: center;
    }
    .btn-block {
      width: 100%;
      justify-content: center;
    }
    .mini-card {
      background: linear-gradient(135deg, rgba(45, 212, 191, 0.14), rgba(13, 148, 136, 0.02));
      border: 1px solid rgba(45, 212, 191, 0.2);
      border-radius: var(--radius-xl);
      padding: 22px 20px;
      box-shadow: var(--shadow-sm);
    }
    .mini-card h3 {
      margin: 0;
      color: var(--text-primary);
      font-size: 1.05rem;
      letter-spacing: -0.01em;
    }
    .mini-card p {
      margin-top: 10px;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* conditions picker */
    .picker {
      margin-top: 18px;
      display: grid;
      gap: 14px;
    }
    .search {
      display: grid;
      gap: 8px;
    }
    .search input {
      width: 100%;
      border: 1px solid var(--gray-border);
      border-radius: 16px;
      padding: 12px 14px;
      font: inherit;
    }
    .picker-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
    }
    .pick-card {
      position: relative;
      background: var(--white-pure);
      border: 1px solid var(--gray-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      padding: 18px 16px;
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
      cursor: pointer;
      min-height: 128px;
    }
    .pick-card:hover {
      transform: translateY(-4px);
      border-color: rgba(45, 212, 191, 0.28);
      box-shadow: var(--shadow-md);
    }
    .pick-card.selected {
      border-color: rgba(13, 148, 136, 0.45);
      box-shadow: 0 18px 34px -16px rgba(13, 148, 136, 0.35);
    }
    .pick-title {
      margin: 0;
      font-size: 1.05rem;
      font-weight: 800;
      letter-spacing: -0.01em;
      color: var(--text-primary);
    }
    .pick-desc {
      margin-top: 10px;
      color: var(--text-muted);
      line-height: 1.6;
      font-size: 0.92rem;
    }
    .pick-check {
      position: absolute;
      top: 14px;
      right: 14px;
      width: 22px;
      height: 22px;
      border-radius: 999px;
      border: 1px solid var(--gray-border);
      background: #fff;
      display: grid;
      place-items: center;
      color: rgba(13, 148, 136, 0.9);
      font-weight: 900;
      opacity: 0.8;
    }
    .pick-card.selected .pick-check {
      background: rgba(45, 212, 191, 0.14);
      border-color: rgba(13, 148, 136, 0.35);
      opacity: 1;
    }

    @media (max-width: 980px) {
      .auth-grid {
        grid-template-columns: 1fr;
      }
      .picker-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }
    @media (max-width: 640px) {
      .picker-grid {
        grid-template-columns: 1fr;
      }
    }