:root {
        --font-sans: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
        --color-bg: #f6f8fc;
        --color-surface: #ffffff;
        --color-surface-soft: #f3f6fb;
        --color-text: #111827;
        --color-text-soft: #4b5563;
        --color-primary: #1d4ed8;
        --color-primary-strong: #1e40af;
        --color-border: #dbe3f0;
        --color-success-bg: #ecfdf3;
        --color-success-text: #166534;
        --shadow-soft: 0 8px 24px rgba(17, 24, 39, 0.08);
        --space-1: 0.25rem;
        --space-2: 0.5rem;
        --space-3: 0.75rem;
        --space-4: 1rem;
        --space-5: 1.25rem;
        --space-6: 1.5rem;
        --space-8: 2rem;
        --space-10: 2.5rem;
        --space-12: 3rem;
        --radius-sm: 0.5rem;
        --radius-md: 0.75rem;
        --radius-lg: 1rem;
        --radius-pill: 999px;
      }

      * {
        box-sizing: border-box;
      }

      html {
        scroll-behavior: smooth;
      }

      body {
        margin: 0;
        font-family: var(--font-sans);
        color: var(--color-text);
        background: linear-gradient(180deg, #f9fbff 0%, var(--color-bg) 40%, #eff4fb 100%);
        line-height: 1.5;
      }

      .site-content {
        display: none;
      }

      .site-content.unlocked {
        display: block;
      }

      .password-gate {
        min-height: 100vh;
        display: grid;
        place-items: center;
        padding: var(--space-6);
      }

      .password-card {
        width: min(460px, 100%);
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-soft);
        padding: var(--space-8);
      }

      .password-card h1 {
        margin: 0 0 var(--space-2);
        font-size: 1.45rem;
      }

      .password-card p {
        margin: 0 0 var(--space-4);
        color: var(--color-text-soft);
      }

      .password-actions {
        display: flex;
        gap: var(--space-3);
        align-items: center;
      }

      .password-error {
        display: none;
        margin-top: var(--space-3);
        color: #b91c1c;
        font-weight: 600;
      }

      .password-error.show {
        display: block;
      }

      .shell {
        width: min(1240px, 100% - 2rem);
        margin: 0 auto;
        padding: var(--space-8) 0 var(--space-12);
      }

      .layout {
        display: grid;
        grid-template-columns: 260px minmax(0, 1fr);
        gap: var(--space-8);
        align-items: start;
      }

      .sidebar {
        position: sticky;
        top: var(--space-6);
        align-self: start;
      }

      .brand-mark {
        display: inline-flex;
        align-items: center;
        margin-bottom: var(--space-3);
        border-radius: var(--radius-md);
        background: #070b13;
        padding: var(--space-2) var(--space-3);
      }

      .brand-mark img {
        width: 170px;
        max-width: 100%;
        height: auto;
        display: block;
      }

      .tabs-nav {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        padding: var(--space-3);
        box-shadow: var(--shadow-soft);
      }

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

      .tab-btn {
        border: 1px solid transparent;
        background: transparent;
        border-radius: var(--radius-md);
        padding: var(--space-3) var(--space-4);
        text-align: left;
        font-weight: 600;
        color: var(--color-text-soft);
        cursor: pointer;
        transition: all 0.2s ease;
      }

      .tab-btn:hover {
        background: var(--color-surface-soft);
        color: var(--color-text);
      }

      .tab-btn[aria-selected="true"] {
        background: #e8f0ff;
        border-color: #bdd1ff;
        color: var(--color-primary-strong);
      }

      .tab-btn:focus-visible,
      .cta-btn:focus-visible,
      .link-chip:focus-visible,
      input:focus-visible,
      select:focus-visible,
      textarea:focus-visible,
      .floating-cta:focus-visible {
        outline: 3px solid rgba(29, 78, 216, 0.35);
        outline-offset: 2px;
      }

      .content-wrap {
        min-width: 0;
      }

      .content-header {
        position: sticky;
        top: 0;
        background: rgba(246, 248, 252, 0.92);
        backdrop-filter: blur(6px);
        z-index: 20;
        border-bottom: 1px solid rgba(219, 227, 240, 0.8);
        padding: var(--space-4) 0;
        margin-bottom: var(--space-5);
      }

      .content-header-inner {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: var(--space-3);
      }

      .logo {
        display: inline-flex;
        align-items: center;
        border-radius: var(--radius-md);
        background: #070b13;
        padding: var(--space-2) var(--space-3);
      }

      .logo img {
        width: clamp(180px, 26vw, 280px);
        height: auto;
        display: block;
      }

      .cta-btn {
        border: 0;
        border-radius: var(--radius-pill);
        padding: 0.72rem 1.1rem;
        font-weight: 700;
        background: var(--color-primary);
        color: #fff;
        cursor: pointer;
        transition: transform 0.16s ease, background 0.16s ease;
        text-decoration: none;
        display: inline-flex;
        align-items: center;
        justify-content: center;
      }

      .cta-btn:hover {
        background: var(--color-primary-strong);
        transform: translateY(-1px);
      }

      .panel {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-soft);
        padding: var(--space-8);
        animation: panelIn 0.26s ease;
      }

      @keyframes panelIn {
        from {
          opacity: 0;
          transform: translateY(8px);
        }
        to {
          opacity: 1;
          transform: translateY(0);
        }
      }

      .panel h1,
      .panel h2,
      .panel h3 {
        line-height: 1.2;
        margin-top: 0;
      }

      .hero-title {
        font-size: clamp(1.8rem, 2.8vw, 2.45rem);
        margin-bottom: var(--space-3);
      }

      .hero-sub {
        font-size: 1.05rem;
        color: var(--color-text-soft);
        max-width: 70ch;
      }

      .chip-row {
        display: flex;
        flex-wrap: wrap;
        gap: var(--space-3);
        margin: var(--space-6) 0;
      }

      .chip {
        background: var(--color-surface-soft);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-pill);
        padding: var(--space-2) var(--space-4);
        font-weight: 600;
        font-size: 0.92rem;
      }

      .flow {
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        background: #f8fbff;
        padding: var(--space-4);
        font-weight: 700;
        color: #1e3a8a;
        margin-top: var(--space-5);
      }

      .grid-2 {
        margin-top: var(--space-6);
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: var(--space-4);
      }

      .card {
        background: #fbfcff;
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        padding: var(--space-5);
      }

      .card h3 {
        margin-bottom: var(--space-3);
        font-size: 1rem;
      }

      .copy-block {
        margin: var(--space-6) 0;
      }

      .copy-block p {
        margin: 0 0 var(--space-3);
        color: var(--color-text-soft);
      }

      .list-title {
        font-size: 0.92rem;
        letter-spacing: 0.02em;
        text-transform: uppercase;
        color: #374151;
        margin: 0 0 var(--space-2);
      }

      ul.clean-list,
      ol.clean-list {
        margin: 0;
        padding-left: 1.15rem;
      }

      ul.clean-list li,
      ol.clean-list li {
        margin-bottom: var(--space-2);
      }

      .cta-row {
        margin-top: var(--space-8);
        padding-top: var(--space-5);
        border-top: 1px solid var(--color-border);
      }

      .proof-strip {
        margin-top: var(--space-6);
        padding: var(--space-4);
        border: 1px dashed var(--color-border);
        border-radius: var(--radius-md);
        color: var(--color-text-soft);
      }

      .proof-strip strong {
        color: var(--color-text);
      }

      .connect-section {
        margin-top: var(--space-10);
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-soft);
        padding: var(--space-8);
      }

      .connect-grid {
        display: block;
        max-width: 680px;
      }

      .embed-card {
        margin-top: var(--space-4);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        background: #fff;
        padding: var(--space-3);
        box-shadow: var(--shadow-soft);
      }

      .embed-frame {
        width: 100%;
        min-height: 1075px;
        border: none;
        border-radius: var(--radius-sm);
        background: #fff;
        display: block;
      }

      form {
        display: grid;
        gap: var(--space-3);
      }

      label {
        font-size: 0.9rem;
        font-weight: 600;
      }

      input,
      select,
      textarea {
        width: 100%;
        border: 1px solid var(--color-border);
        border-radius: var(--radius-sm);
        padding: 0.7rem 0.8rem;
        font: inherit;
      }

      textarea {
        min-height: 110px;
        resize: vertical;
      }

      .success {
        display: none;
        margin-top: var(--space-4);
        padding: var(--space-4);
        background: var(--color-success-bg);
        color: var(--color-success-text);
        border: 1px solid #bbf7d0;
        border-radius: var(--radius-sm);
        font-weight: 600;
      }

      .success.show {
        display: block;
      }

      .floating-cta {
        position: fixed;
        right: var(--space-4);
        bottom: var(--space-4);
        border: 0;
        border-radius: var(--radius-pill);
        background: var(--color-primary);
        color: #fff;
        box-shadow: 0 12px 28px rgba(30, 64, 175, 0.35);
        padding: 0.9rem 1.2rem;
        font-weight: 800;
        z-index: 60;
        cursor: pointer;
      }

      .floating-cta:hover {
        background: var(--color-primary-strong);
      }

      .mobile-topbar {
        display: none;
      }

      .sections-btn {
        border: 1px solid var(--color-border);
        border-radius: var(--radius-pill);
        padding: 0.62rem 0.95rem;
        font-weight: 700;
        background: #fff;
        color: var(--color-text);
        cursor: pointer;
      }

      .mobile-sections-overlay[hidden] {
        display: none;
      }

      .mobile-sections-overlay {
        position: fixed;
        inset: 0;
        z-index: 70;
      }

      .mobile-sections-backdrop {
        position: absolute;
        inset: 0;
        background: rgba(15, 23, 42, 0.45);
      }

      .mobile-sections-drawer {
        position: absolute;
        top: 0;
        right: 0;
        width: min(360px, 86vw);
        height: 100%;
        background: #fff;
        border-left: 1px solid var(--color-border);
        box-shadow: -16px 0 28px rgba(15, 23, 42, 0.14);
        padding: var(--space-4);
        display: flex;
        flex-direction: column;
        gap: var(--space-3);
      }

      .mobile-sections-head {
        display: flex;
        align-items: center;
        justify-content: space-between;
      }

      .close-sections-btn {
        border: 1px solid var(--color-border);
        border-radius: var(--radius-pill);
        background: #fff;
        padding: 0.45rem 0.8rem;
        font-weight: 600;
        cursor: pointer;
      }

      .mobile-tab-list {
        display: flex;
        flex-direction: column;
        gap: var(--space-2);
        overflow-y: auto;
        padding-right: var(--space-1);
      }

      @media (max-width: 980px) {
        .layout {
          grid-template-columns: 1fr;
          gap: var(--space-4);
        }

        .sidebar {
          display: none;
        }

        .mobile-topbar {
          display: flex;
          position: sticky;
          top: 0;
          z-index: 50;
          background: rgba(246, 248, 252, 0.95);
          backdrop-filter: blur(6px);
          border: 1px solid var(--color-border);
          border-radius: var(--radius-lg);
          padding: var(--space-2);
          margin-bottom: var(--space-4);
          gap: var(--space-2);
        }

        .mobile-topbar .sections-btn {
          width: 100%;
        }

        .panel {
          padding: var(--space-6);
        }

        .grid-2 {
          grid-template-columns: 1fr;
        }

        .content-header {
          position: static;
          backdrop-filter: none;
          border-bottom: 0;
          padding-top: 0;
        }
      }