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

    :root {
      --ibl: #38A1E5;
      --ibl-indigo: #7284FF;
      --accent: #0078FF;
      --page-bg: #f5f7fa;
      --title-color: #4E5460;
      --text-muted: #6b7280;
      --card-bg: #F5F8FF;
      --card-border: rgba(115, 185, 255, 0.3);
      --card-radius: 0.8rem;
      --card-shadow: 0 0.125rem 1.25rem 0.3125rem rgba(115, 185, 255, 0.23);
      --btn-radius: 0.4375rem;
      --btn-primary-from: #BACEFF;
      --btn-primary-to: #0078FF;
      --btn-primary-hover-from: #A9BDFF;
      --btn-primary-hover-to: #0069E0;
      --input-border: #e5e7eb;
      --section-gap: 3.1rem;
      --logo-h: 4rem;
      --control-h: 3.25rem;
      --control-font: 1.0625rem;
      --card-pad: 1.625rem;
      --stack-gap: 1.375rem;
      --type-scale: 1;
      --brand-font: clamp(1.875rem, 1.25rem + 2.2vw, 2.625rem);
      --hero-title-font: clamp(1.5rem, 1.1rem + 2.5vw, 2.375rem);
      --hero-tagline-font: clamp(0.875rem, 0.65rem + 0.9vw, 1.25rem);
      --legal-font: clamp(0.625rem, 0.5rem + 0.35vw, 0.8125rem);
      --divider-font: clamp(0.875rem, 0.7rem + 0.5vw, 1.0625rem);
      --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }

    /* Short viewport — desktop / tablet */
    @media (min-width: 640px) and (max-height: 599px) {
      :root {
        --logo-h: 2.5rem;
        --control-h: 2.5rem;
        --control-font: 0.9375rem;
        --card-pad: 0.875rem;
        --stack-gap: 0.875rem;
        --type-scale: 0.88;
      }
    }

    @media (min-width: 640px) and (min-height: 600px) and (max-height: 699px) {
      :root {
        --logo-h: 3.25rem;
        --control-h: 2.75rem;
        --control-font: 1.0625rem;
        --card-pad: 1.125rem;
        --stack-gap: 1.125rem;
        --type-scale: 0.94;
      }
    }

    /* Mobile — default tall */
    @media (max-width: 639px) {
      :root {
        --section-gap: 2rem;
        --logo-h: 2.75rem;
        --control-h: 3.125rem;
        --control-font: 1rem;
        --card-pad: 1.75rem;
        --stack-gap: 1.25rem;
        --type-scale: 1;
      }
    }

    @media (max-width: 639px) and (max-height: 599px) {
      :root {
        --logo-h: 1.75rem;
        --control-h: 2.75rem;
        --control-font: 0.875rem;
        --card-pad: 1.25rem;
        --stack-gap: 1rem;
        --type-scale: 0.88;
      }
    }

    @media (max-width: 639px) and (min-height: 600px) and (max-height: 699px) {
      :root {
        --logo-h: 2.5rem;
        --control-h: 2.875rem;
        --control-font: 0.9375rem;
        --card-pad: 1.5rem;
        --stack-gap: 1.125rem;
        --type-scale: 0.94;
      }
    }

    html {
      -webkit-text-size-adjust: 100%;
      text-size-adjust: 100%;
    }

    html, body {
      height: 100%;
      font-family: var(--font);
      background: var(--page-bg);
      color: var(--title-color);
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    .login-column {
      display: flex;
      flex-direction: column;
      justify-content: flex-start;
      align-items: center;
      min-height: 100%;
      min-height: 100dvh;
      width: 100%;
      max-width: min(46rem, calc(100% - 2rem));
      margin-inline: auto;
      padding:
        env(safe-area-inset-top, 0px)
        max(1rem, env(safe-area-inset-right, 0px))
        max(1rem, env(safe-area-inset-bottom, 0px))
        max(1rem, env(safe-area-inset-left, 0px));
      overflow-y: auto;
      -webkit-overflow-scrolling: touch;
    }

    @media (min-width: 640px) {
      .login-column {
        padding-left: max(1.5rem, env(safe-area-inset-left, 0px));
        padding-right: max(1.5rem, env(safe-area-inset-right, 0px));
      }
    }

    @media (min-width: 1024px) {
      .login-column {
        margin-block: 1rem;
        margin-inline: auto;
        min-height: calc(100vh - 2rem);
        min-height: calc(100dvh - 2rem);
        padding:
          env(safe-area-inset-top, 0px)
          1.5rem
          max(2.5rem, env(safe-area-inset-bottom, 0px))
          1.5rem;
      }
    }

    .login-column__inner {
      display: flex;
      flex-direction: column;
      align-items: center;
      width: 100%;
      flex: 0 1 auto;
      min-height: 0;
      padding-top: var(--section-gap);
      padding-bottom: max(2.5rem, env(safe-area-inset-bottom, 0px));
      gap: calc(var(--section-gap) - 0.5rem);
    }

    .logo-section {
      display: flex;
      justify-content: center;
      flex-shrink: 0;
    }

    .logo-section__row {
      display: flex;
      align-items: center;
      gap: 0.875rem;
    }

    .logo-section__link {
      display: inline-flex;
      line-height: 0;
    }

    .logo-section__img {
      height: var(--logo-h);
      width: auto;
      object-fit: contain;
    }

    .brand-name {
      font-size: calc(var(--brand-font) * var(--type-scale));
      font-weight: 700;
      text-transform: lowercase;
      background: linear-gradient(to right, var(--ibl), var(--ibl-indigo));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      letter-spacing: -0.02em;
    }

    .auth-main {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: var(--section-gap);
      width: 100%;
    }

    .hero {
      text-align: center;
      width: 100%;
      margin-bottom: 10px;
    }

    .hero__title {
      font-size: calc(var(--hero-title-font) * var(--type-scale));
      font-weight: 400;
      color: var(--title-color);
      line-height: 1.25;
      max-width: 24ch;
      margin: 0 auto 0.5rem;
    }

    @media (min-width: 640px) {
      .login-column__inner {
        gap: 2rem;
      }

      .auth-main {
        gap: 2rem;
      }

      .hero__title {
        white-space: nowrap;
        max-width: 24ch;
        margin-bottom: 0.375rem;
        line-height: 1.25;
      }

      .hero__tagline,
      .hero__tagline-lead,
      .hero__tagline-rest {
        font-size: calc(var(--hero-tagline-font) * var(--type-scale));
        line-height: 1.35;
      }
    }

    .hero__tagline {
      font-size: calc(var(--hero-tagline-font) * var(--type-scale));
      color: var(--text-muted);
      line-height: 1.375;
      margin: 0 auto;
      padding: 0 0.25rem;
    }

    .hero__tagline-lead,
    .hero__tagline-rest {
      font-size: inherit;
    }

    .hero__tagline-rest {
      display: block;
    }

    .auth-card {
      width: 100%;
      max-width: 34rem;
      padding: var(--card-pad);
      border-radius: var(--card-radius);
      border: 0.25px solid var(--card-border);
      background: var(--card-bg);
      box-shadow: var(--card-shadow);
    }

    .auth-card__stack {
      display: flex;
      flex-direction: column;
      gap: var(--stack-gap);
    }

    .input {
      width: 100%;
      height: var(--control-h);
      min-height: var(--control-h);
      padding: 0 0.875rem;
      font-size: var(--control-font);
      font-family: inherit;
      color: var(--title-color);
      background: #fff;
      border: 1px solid var(--input-border);
      border-radius: var(--btn-radius);
      outline: none;
    }

    .input:user-invalid:not(:placeholder-shown) {
      border: 2px solid #3b82f6;
    }

    .input:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 2px rgba(0, 120, 255, 0.15);
    }

    .btn {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.25rem;
      width: 100%;
      height: var(--control-h);
      min-height: var(--control-h);
      font-size: var(--control-font);
      font-family: inherit;
      border-radius: var(--btn-radius);
      cursor: pointer;
      transition: background 0.15s, border-color 0.15s;
    }

    .btn--primary {
      border: 0;
      box-shadow: none;
      font-weight: 600;
      color: #fff !important;
      background: linear-gradient(to right, var(--btn-primary-from), var(--btn-primary-to));
    }

    .btn--primary:hover {
      background: linear-gradient(
        to right,
        var(--btn-primary-hover-from),
        var(--btn-primary-hover-to)
      );
    }

    .btn--outline {
      font-weight: 500;
      color: #374151;
      background: #fff;
      border: 1px solid #e5e7eb;
      box-shadow: none;
    }

    .btn--outline:hover {
      background: #fafafa;
      border-color: #d1d5db;
    }

    .btn--outline svg { width: 1.375rem; height: 1.375rem; flex-shrink: 0; }

    .divider-or {
      text-align: center;
      color: var(--text-muted);
      font-size: calc(var(--divider-font) * var(--type-scale));
      padding: 0.25rem 0;
    }

    .auth-card__legal {
      text-align: center;
      font-size: calc(var(--legal-font) * var(--type-scale));
      color: var(--text-muted);
    }

    .auth-card__legal a {
      color: inherit;
      text-decoration: none;
    }

    .auth-card__legal a:hover { text-decoration: underline; }

    .auth-card__legal .sep { margin: 0 0.5rem; }

    .cta-pill {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 2px;
      gap: 2px;
      background: #f0f0f0;
      border: 1px solid rgba(115, 185, 255, 0.28);
      border-radius: var(--btn-radius);
      box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
      width: fit-content;
      max-width: 100%;
      box-sizing: border-box;
    }

    .cta-pill a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      box-sizing: border-box;
      height: 42px;
      min-height: 42px;
      padding: 0 1.5rem;
      font-size: var(--control-font);
      font-weight: 500;
      line-height: 1;
      color: var(--text-muted);
      text-decoration: none;
      border-radius: var(--btn-radius);
      white-space: nowrap;
      cursor: pointer;
      transition: background 0.15s, box-shadow 0.15s;
    }

    .cta-pill__text {
      display: inline-block;
      line-height: 1.125;
      transition: color 0.15s;
    }

    .cta-pill a:hover,
    .cta-pill a.is-active:hover {
      background: #fff;
      box-shadow: 0 2px 8px rgba(56, 161, 229, 0.2);
    }

    .cta-pill a:hover .cta-pill__text,
    .cta-pill a.is-active:hover .cta-pill__text {
      color: var(--ibl);
      font-weight: 600;
    }

    @supports (-webkit-background-clip: text) or (background-clip: text) {
      .cta-pill a:hover .cta-pill__text,
      .cta-pill a.is-active:hover .cta-pill__text {
        background: linear-gradient(to right, var(--ibl), var(--ibl-indigo));
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
        color: transparent;
      }
    }

    .cta-pill a.is-active {
      background: #fff;
      color: var(--title-color);
      box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
    }

    @media (max-width: 639px) {
      .login-column {
        max-width: 100%;
        margin-inline: auto;
      }

      .login-column__inner {
        padding-top: var(--section-gap);
        gap: var(--section-gap);
      }

      .auth-main {
        gap: var(--section-gap);
      }

      .login-column__inner,
      .auth-main,
      .hero,
      .auth-card {
        width: 100%;
        max-width: 100%;
      }

      .logo-section__row {
        gap: 0.5rem;
      }

      .hero__title {
        max-width: none;
        margin-bottom: 0.25rem;
        line-height: 1.2;
      }

      .hero__tagline,
      .hero__tagline-lead,
      .hero__tagline-rest {
        font-size: 16px;
        line-height: 1.35;
      }

      .divider-or {
        padding: 0;
      }

      .btn--outline svg {
        width: 1rem;
        height: 1rem;
      }

      .input {
        font-size: max(16px, var(--control-font));
        padding: 0 0.75rem;
        height: var(--control-h);
        min-height: var(--control-h);
      }

      .btn {
        height: var(--control-h);
        min-height: var(--control-h);
        touch-action: manipulation;
      }

      .cta-pill a,
      .cta-pill a.is-active {
        padding: 0 0.875rem;
        touch-action: manipulation;
      }
    }

    @media (max-width: 380px) {
      .login-column {
        padding-left: max(0.75rem, env(safe-area-inset-left, 0px));
        padding-right: max(0.75rem, env(safe-area-inset-right, 0px));
      }
    }

    .login-error {
      width: 100%;
      max-width: 34rem;
      padding: 0.625rem 0.875rem;
      font-size: 0.875rem;
      color: #b91c1c;
      text-align: center;
      background: #fef2f2;
      border: 1px solid #fecaca;
      border-radius: var(--btn-radius);
    }

    .login-notice {
      width: 100%;
      max-width: 34rem;
      padding: 0.625rem 0.875rem;
      font-size: 0.875rem;
      color: #166534;
      text-align: center;
      background: #f0fdf4;
      border: 1px solid #bbf7d0;
      border-radius: var(--btn-radius);
    }

    .input--code {
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      letter-spacing: 0.35em;
      text-align: center;
      font-size: 1.25rem;
    }

    .auth-card__stack--secondary {
      margin-top: 0.75rem;
    }

    .login-back-link {
      margin-top: 1rem;
      text-align: center;
      font-size: 0.875rem;
    }

    .login-back-link a {
      color: var(--accent);
      text-decoration: none;
    }

    .login-back-link a:hover {
      text-decoration: underline;
    }

    .login-page--verify {
      background: #f0f7ff;
    }

    .login-column__inner--verify {
      gap: 1.25rem;
    }

    .verify-card {
      width: 100%;
      max-width: 34rem;
      padding: 2rem 1.75rem 1.5rem;
      border-radius: 1rem;
      border: 1px solid rgba(115, 185, 255, 0.35);
      background: #fff;
      box-shadow:
        0 0.25rem 1.5rem rgba(115, 185, 255, 0.18),
        0 0.125rem 0.5rem rgba(0, 120, 255, 0.08);
      text-align: center;
    }

    .verify-card__title {
      margin: 0 0 0.5rem;
      font-size: clamp(1.375rem, 1.1rem + 1vw, 1.75rem);
      font-weight: 600;
      color: #374151;
      line-height: 1.3;
    }

    .verify-card__subtitle {
      margin: 0;
      font-size: 1rem;
      color: #6b7280;
      line-height: 1.4;
    }

    .verify-card__email {
      margin: 0.35rem 0 0;
      font-size: 0.875rem;
      color: #9ca3af;
      word-break: break-all;
    }

    .verify-card__form {
      margin-top: 1.5rem;
    }

    .code-verify__track {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      padding: 0.875rem 1rem;
      border-radius: 0.75rem;
      background: #eef4ff;
      border: 1px solid rgba(115, 185, 255, 0.2);
    }

    .code-verify__digit {
      width: 2.625rem;
      height: 2.875rem;
      padding: 0;
      border: 1px solid #dbeafe;
      border-radius: 0.5rem;
      background: #fff;
      color: #374151;
      font-size: 1.375rem;
      font-weight: 600;
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      text-align: center;
      outline: none;
      transition: border-color 0.15s, box-shadow 0.15s;
      caret-color: var(--accent);
    }

    .code-verify__digit:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(0, 120, 255, 0.15);
    }

    .verify-card__expires {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      margin-top: 1rem;
      padding: 0.5rem 0.875rem;
      border-radius: 999px;
      background: #e8f3ff;
      color: #2563eb;
      font-size: 0.875rem;
      font-weight: 500;
    }

    .verify-card__expires-icon {
      width: 1rem;
      height: 1rem;
      flex-shrink: 0;
    }

    .verify-card__divider {
      margin: 1.25rem 0 1rem;
      border-top: 1px solid #e5e7eb;
    }

    .verify-card__disclaimer {
      margin: 0;
      font-size: 0.8125rem;
      color: #9ca3af;
      line-height: 1.5;
    }

    .verify-card__actions {
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
      gap: 0.5rem;
      margin-top: 1rem;
      font-size: 0.875rem;
    }

    .verify-card__actions-sep {
      color: #d1d5db;
    }

    .verify-card__link,
    .verify-card__link-btn {
      color: var(--accent);
      text-decoration: none;
      background: none;
      border: 0;
      padding: 0;
      font: inherit;
      cursor: pointer;
    }

    .verify-card__link:hover,
    .verify-card__link-btn:hover {
      text-decoration: underline;
    }

    .sr-only {
      position: absolute;
      width: 1px;
      height: 1px;
      padding: 0;
      margin: -1px;
      overflow: hidden;
      clip: rect(0, 0, 0, 0);
      white-space: nowrap;
      border: 0;
    }

    @media (max-width: 480px) {
      .verify-card {
        padding: 1.5rem 1rem 1.25rem;
      }

      .code-verify__track {
        gap: 0.35rem;
        padding: 0.75rem 0.5rem;
      }

      .code-verify__digit {
        width: 2.125rem;
        height: 2.5rem;
        font-size: 1.125rem;
      }
    }