:root {
      color-scheme: light dark;
      --bg: #ffffff;
      --surface: #ffffff;
      --text: #1d1d1f;
      --muted: #6e6e73;
      --line: rgba(0, 0, 0, 0.08);
      --accent: #0a84ff;
      --accent-soft: rgba(10, 132, 255, 0.12);
      --shadow-soft: 0 18px 40px rgba(15, 15, 20, 0.08);
      --shadow-card: 0 10px 24px rgba(15, 15, 20, 0.04);
      --section-surface: rgba(255, 255, 255, 0.84);
      --section-surface-dark: rgba(11, 11, 12, 0.72);
    }
    @media (prefers-color-scheme: dark) {
      :root {
        --bg: #1c1c1e;
        --surface: #2c2c2e;
        --text: #f5f5f7;
        --muted: #a1a1a6;
        --line: rgba(255, 255, 255, 0.12);
        --accent: #0a84ff;
        --accent-soft: rgba(10, 132, 255, 0.2);
        --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.35);
        --shadow-card: 0 10px 24px rgba(0, 0, 0, 0.3);
        --section-surface: rgba(28, 28, 30, 0.78);
        --section-surface-dark: rgba(11, 11, 12, 0.64);
      }
    }
    body.hero-theme {
      --bg: #0b0b0c;
      --surface: rgba(15, 15, 20, 0.6);
      --text: #f5f5f7;
      --muted: rgba(245, 245, 247, 0.72);
      --line: rgba(255, 255, 255, 0.12);
      --accent-soft: rgba(10, 132, 255, 0.2);
      --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.35);
      --shadow-card: 0 10px 24px rgba(0, 0, 0, 0.3);
      --section-surface: rgba(11, 11, 12, 0.72);
      --section-surface-dark: rgba(11, 11, 12, 0.72);
    }
    body.hero-theme .page::after {
      background:
        linear-gradient(180deg, rgba(11, 11, 12, 0.62), rgba(11, 11, 12, 0.62)),
        radial-gradient(120% 120% at 10% 0%, rgba(10, 132, 255, 0.12), transparent 60%);
    }
    body.hero-theme .section.dark {
      background: transparent;
      border-top: none;
    }
    body.hero-theme .section.page-hero {
      border-top: none;
    }
    body.hero-theme .section {
      border-top: none;
    }
    * {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
      background: #0b0b0c;
      color: var(--text);
      line-height: 1.6;
      min-height: 100vh;
    }
    a {
      color: inherit;
      text-decoration: none;
    }
    .page {
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      background: #0b0b0c;
      position: relative;
    }
    .page::before {
      content: "";
      position: fixed;
      inset: 0;
      background-image: var(--page-bg-image);
      background-size: cover;
      background-position: center;
      opacity: 0.16;
      filter: brightness(0.85) saturate(0.95);
      pointer-events: none;
      z-index: 0;
    }
    .page::after {
      content: "";
      position: fixed;
      inset: 0;
      background: radial-gradient(120% 120% at 10% 0%, rgba(10, 132, 255, 0.12), transparent 60%);
      pointer-events: none;
      z-index: 0;
    }
    .page > * {
      position: relative;
      z-index: 1;
    }
    .nav {
      padding: 14px 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      max-width: 1200px;
      margin: 16px auto 0;
      width: calc(100% - 32px);
      position: sticky;
      top: 16px;
      z-index: 10;
      color: #f5f5f7;
      background: rgba(12, 12, 16, 0.45);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 999px;
      backdrop-filter: blur(16px) saturate(1.1);
      -webkit-backdrop-filter: blur(16px) saturate(1.1);
      box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
    }
    .brand {
      font-weight: 600;
      letter-spacing: 0.02em;
    }
    .nav-links {
      display: flex;
      gap: 20px;
      font-size: 14px;
      color: rgba(245, 245, 247, 0.72);
      flex-wrap: wrap;
    }
    .nav-link {
      padding: 6px 12px;
      border-radius: 12px;
      border: 1px solid rgba(255, 255, 255, 0.18);
      color: rgba(245, 245, 247, 0.86);
      background: rgba(255, 255, 255, 0.04);
      transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
    }
    .nav-link--icon {
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .nav-icon {
      display: none;
      width: 16px;
      height: 16px;
    }
    .nav-icon img {
      width: 16px;
      height: 16px;
      display: block;
      filter: brightness(0) invert(1);
      opacity: 0.9;
    }
    .nav-link:hover {
      color: #fff;
      border-color: rgba(255, 255, 255, 0.32);
      background: rgba(255, 255, 255, 0.08);
    }
    .section {
      width: 100%;
      padding: 120px 24px;
      border-top: 1px solid var(--line);
      background: var(--section-surface);
    }
    .section.dark {
      background: var(--section-surface-dark);
      color: #f5f5f7;
      border-top: none;
    }
    .section.dark .muted {
      color: rgba(245, 245, 247, 0.72);
    }
    .section.dark .eyebrow {
      color: var(--accent);
    }
    .section.media {
      position: relative;
      overflow: hidden;
    }
    .section.media::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image: var(--media-image);
      background-size: cover;
      background-position: center;
      opacity: 0.12;
      filter: brightness(0.72) saturate(0.85);
    }
    .section.media .section-inner {
      position: relative;
      z-index: 1;
    }
    .section-inner {
      max-width: 1200px;
      margin: 0 auto;
      width: 100%;
    }
    .page-hero {
      padding-top: 160px;
      padding-bottom: 140px;
      min-height: 65vh;
    }
    .login-section {
      display: flex;
      align-items: center;
      min-height: 65vh;
    }
    .login-section .section-inner {
      display: flex;
      justify-content: center;
    }
    .login-card {
      width: 100%;
      max-width: 520px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.18);
      border-radius: 24px;
      padding: 32px;
      box-shadow: var(--shadow-soft);
      display: grid;
      gap: 16px;
      position: relative;
      overflow: hidden;
    }
    .login-card::before {
      content: "";
      position: absolute;
      top: 18px;
      left: 24px;
      height: 2px;
      width: 140px;
      border-radius: 999px;
      background: linear-gradient(90deg, rgba(10, 132, 255, 0) 0%, rgba(10, 132, 255, 0.7) 50%, rgba(10, 132, 255, 0) 100%);
      opacity: 0.9;
    }
    .login-card::after {
      content: "";
      position: absolute;
      top: 18px;
      left: 24px;
      height: 2px;
      width: 60px;
      background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.7), transparent);
      animation: heroPulse 6s ease-in-out infinite;
    }
    @keyframes heroPulse {
      0% { transform: translateX(0); opacity: 0; }
      30% { opacity: 1; }
      70% { opacity: 1; }
      100% { transform: translateX(180px); opacity: 0; }
    }
    @media (prefers-reduced-motion: reduce) {
      .login-card::after {
        display: none;
      }
    }
    .eyebrow {
      text-transform: uppercase;
      letter-spacing: 0.24em;
      font-size: 12px;
      font-weight: 500;
      color: var(--muted);
    }
    h1 {
      font-size: clamp(28px, 4vw, 40px);
      line-height: 1.15;
      margin: 0;
      font-weight: 600;
      letter-spacing: -0.01em;
    }
    p {
      margin: 0;
      color: var(--muted);
    }
    .stack {
      display: grid;
      gap: 12px;
    }
    .button {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 12px 22px;
      border-radius: 14px;
      font-weight: 600;
      font-size: 15px;
      border: 1px solid transparent;
      transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
      cursor: pointer;
      width: 100%;
      justify-content: center;
    }
    .button.primary {
      background: linear-gradient(180deg, #1a90ff 0%, var(--accent) 100%);
      color: #fff;
      box-shadow: 0 10px 24px rgba(10, 132, 255, 0.24);
      border-color: rgba(10, 132, 255, 0.35);
    }
    .button.primary:hover {
      box-shadow: 0 14px 28px rgba(10, 132, 255, 0.28);
      transform: translateY(-1px);
    }
    .button.secondary {
      background: rgba(255, 255, 255, 0.08);
      border-color: rgba(255, 255, 255, 0.2);
      color: #f5f5f7;
    }
    .button:hover {
      transform: translateY(-1px);
    }
    .error {
      border-radius: 14px;
      padding: 12px 14px;
      font-size: 14px;
      background: rgba(255, 69, 58, 0.18);
      border: 1px solid rgba(255, 69, 58, 0.4);
      color: #f5f5f7;
    }
    .meta {
      font-size: 13px;
      color: rgba(245, 245, 247, 0.6);
    }
    .footer-section {
      padding-top: 40px;
      padding-bottom: 64px;
    }
    .footer {
      width: 100%;
      margin-top: 32px;
      padding-top: 24px;
      color: var(--muted);
      font-size: 14px;
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      border-top: 1px solid var(--line);
    }
    .footer.footer--links-only {
      justify-content: flex-start;
    }
    .footer a {
      color: inherit;
    }
    @media (max-width: 900px) {
      .section {
        padding: 96px 16px;
      }
      .page-hero {
        padding-top: 140px;
        padding-bottom: 120px;
      }
      .login-card {
        padding: 24px;
      }
      .footer-section {
        padding-top: 32px;
        padding-bottom: 48px;
      }
      .nav {
        padding: 12px 16px;
        top: 12px;
        margin: 12px auto 0;
      }
    }
    @media (max-width: 600px) {
      .nav-link--icon {
        padding: 8px 10px;
      }
      .nav-link--icon .nav-label {
        display: none;
      }
      .nav-link--icon .nav-icon {
        display: inline-flex;
      }
    }