#startScreen.sionindo-landing {
      --sl-bg: #101927;
      --sl-paper: #192637;
      --sl-ink: #e9f0fb;
      --sl-muted: #b0c0d4;
      --sl-line: #35465c;
      --sl-accent: #83d5d1;
      --sl-accent-hover: #a1e3df;
      --sl-on-accent: #102e32;
      --sl-soft: #213d40;
      --sl-placeholder: #a0b1c7;
      --sl-field-hover: #66809c;
      --sl-error: #ffb7c1;
      --sl-error-bg: #40252f;
      --sl-radius: 16px;
      box-sizing: border-box;
      display: flex;
      flex-direction: column;
      width: 100%;
      min-height: 100svh;
      margin: 0;
      padding: 0;
      background: var(--sl-bg);
      color: var(--sl-ink);
      font: 400 15px/1.5 "Segoe UI", Arial, sans-serif;
      color-scheme: dark;
      -webkit-text-size-adjust: 100%;
    }
    #startScreen.sionindo-landing *,
    #startScreen.sionindo-landing *::before,
    #startScreen.sionindo-landing *::after { box-sizing: border-box; }
    #startScreen.sionindo-landing[hidden],
    #startScreen.sionindo-landing [hidden] { display: none !important; }
    #startScreen.sionindo-landing button,
    #startScreen.sionindo-landing input,
    #startScreen.sionindo-landing select { font: inherit; }
    #startScreen.sionindo-landing button,
    #startScreen.sionindo-landing a { -webkit-tap-highlight-color: transparent; }
    #startScreen.sionindo-landing button { cursor: pointer; }
    #startScreen.sionindo-landing button:disabled { opacity: .6; cursor: not-allowed; }
    #startScreen.sionindo-landing :is(button, a, input, select, summary):focus-visible {
      outline: 3px solid var(--sl-accent);
      outline-offset: 3px;
    }
    #startScreen.sionindo-landing h1,
    #startScreen.sionindo-landing h2,
    #startScreen.sionindo-landing p { margin: 0; }
    #startScreen.sionindo-landing .sl-header { border-bottom: 1px solid var(--sl-line); background: var(--sl-paper); }
    #startScreen.sionindo-landing .sl-header-inner {
      width: min(100%, 1120px); margin: 0 auto; padding: 23px 32px;
      display: flex; align-items: center; justify-content: space-between; gap: 20px;
    }
    #startScreen.sionindo-landing .sl-brand { flex-shrink: 0; }
    #startScreen.sionindo-landing .sl-wordmark { color: var(--sl-ink); font-size: 25px; font-weight: 800; letter-spacing: 1.2px; line-height: 1; }
    #startScreen.sionindo-landing .sl-wordmark small {
      display: block; margin-top: 8px; font-size: 10px; font-weight: 500;
      letter-spacing: 4.4px; color: var(--sl-accent);
    }
    #startScreen.sionindo-landing .sl-logo-image { display: block; width: 152px; max-height: 56px; object-fit: contain; }
    #startScreen.sionindo-landing .sl-top-links { display: flex; align-items: center; gap: 24px; }
    #startScreen.sionindo-landing .sl-text-button {
      display: inline-flex; align-items: center; justify-content: center; gap: 7px;
      min-height: 44px; margin: 0; padding: 6px 0;
      border: 0; border-radius: 4px; background: transparent; color: var(--sl-muted);
      font-size: 13px; font-weight: 500; text-decoration: none;
    }
    #startScreen.sionindo-landing .sl-text-button:hover { color: var(--sl-accent); text-decoration: underline; text-underline-offset: 4px; }
    #startScreen.sionindo-landing .sl-main { flex: 1; width: 100%; padding: 30px 20px 36px; }
    #startScreen.sionindo-landing .sl-intro { max-width: 700px; margin: 0 auto 24px; text-align: center; }
    #startScreen.sionindo-landing .sl-eyebrow { margin-bottom: 9px; color: var(--sl-accent); font-size: 11px; font-weight: 700; letter-spacing: 1.6px; text-transform: uppercase; }
    #startScreen.sionindo-landing h1 { font-size: 34px; font-weight: 700; line-height: 1.2; letter-spacing: 0; }
    #startScreen.sionindo-landing .sl-intro p { margin-top: 11px; color: var(--sl-muted); font-size: 14px; }
    #startScreen.sionindo-landing .sl-panel {
      width: 100%; max-width: 650px; margin: 0 auto;
      background: var(--sl-paper); border: 1px solid var(--sl-line); border-radius: var(--sl-radius);
      box-shadow: 0 8px 30px #0000001a;
    }
    #startScreen.sionindo-landing .sl-tabs {
      display: flex; gap: 6px; margin: 0; padding: 7px;
      border-bottom: 1px solid var(--sl-line); border-radius: 15px 15px 0 0;
      background: var(--sl-bg);
    }
    #startScreen.sionindo-landing .sl-tab {
      flex: 1; min-width: 0; min-height: 46px; margin: 0; padding: 11px 12px;
      border: 1px solid transparent; border-radius: 10px; background: transparent;
      color: var(--sl-muted); font-size: 14px; font-weight: 600;
    }
    #startScreen.sionindo-landing .sl-tab[aria-selected="true"] {
      border-color: var(--sl-line); background: var(--sl-paper); color: var(--sl-ink); box-shadow: 0 2px 5px #0000001a;
    }
    #startScreen.sionindo-landing .sl-panel-content { padding: 25px 28px 18px; }
    #startScreen.sionindo-landing h2 { font-size: 20px; font-weight: 650; line-height: 1.35; }
    #startScreen.sionindo-landing .sl-description { margin-top: 7px; color: var(--sl-muted); font-size: 13px; }
    #startScreen.sionindo-landing .sl-form { display: block; margin: 21px 0 0; padding: 0; }
    #startScreen.sionindo-landing .sl-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; }
    #startScreen.sionindo-landing .sl-field { min-width: 0; }
    #startScreen.sionindo-landing .sl-label { display: block; margin-bottom: 7px; font-size: 13px; font-weight: 600; color: var(--sl-ink); }
    #startScreen.sionindo-landing .sl-control {
      display: block; width: 100%; min-height: 46px; margin: 0; padding: 11px 12px;
      border: 1px solid var(--sl-line); border-radius: 8px; background: var(--sl-paper);
      color: var(--sl-ink); font-size: 16px; font-weight: 400; line-height: 1.4;
    }
    #startScreen.sionindo-landing .sl-control::placeholder { color: var(--sl-placeholder); opacity: 1; }
    #startScreen.sionindo-landing .sl-control:hover { border-color: var(--sl-field-hover); }
    #startScreen.sionindo-landing .sl-password { position: relative; }
    #startScreen.sionindo-landing .sl-password .sl-control { padding-right: 67px; }
    #startScreen.sionindo-landing .sl-pin-toggle {
      position: absolute; inset: 1px 2px 1px auto; padding: 0 10px;
      border: 0; border-radius: 7px; background: transparent; color: var(--sl-accent);
      font-size: 12px; font-weight: 600;
    }
    #startScreen.sionindo-landing .sl-name {
      display: flex; align-items: center; flex-wrap: wrap; gap: 2px 9px;
      margin-top: 11px; color: var(--sl-muted); font-size: 12px;
    }
    #startScreen.sionindo-landing .sl-name label { flex-shrink: 0; }
    #startScreen.sionindo-landing .sl-name input {
      flex: 1 1 230px; min-width: 0; height: 27px; margin: 0; padding: 0;
      border: 0; border-radius: 3px; background: transparent; color: var(--sl-muted); font-size: 12px;
    }
    #startScreen.sionindo-landing .sl-name input::placeholder { color: var(--sl-placeholder); }
    #startScreen.sionindo-landing .sl-settings { margin-top: 19px; padding-top: 20px; border-top: 1px solid var(--sl-line); }
    #startScreen.sionindo-landing .sl-settings .sl-row { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); }
    #startScreen.sionindo-landing .sl-package-button {
      display: flex; align-items: center; justify-content: space-between; gap: 8px;
      text-align: left; cursor: pointer;
    }
    #startScreen.sionindo-landing .sl-package-button::after { content: "⌄"; flex-shrink: 0; color: var(--sl-muted); }
    #startScreen.sionindo-landing .sl-custom-duration { max-width: 190px; margin-top: 16px; }
    #startScreen.sionindo-landing .sl-primary {
      display: inline-flex; align-items: center; justify-content: center; gap: 12px;
      min-height: 48px; padding: 12px 20px;
      border: 1px solid var(--sl-accent); border-radius: 9px;
      background: var(--sl-accent); color: var(--sl-on-accent); font-size: 15px; font-weight: 650;
      text-decoration: none; transition: background .15s;
    }
    #startScreen.sionindo-landing .sl-primary:not(:disabled):hover { background: var(--sl-accent-hover); }
    #startScreen.sionindo-landing .sl-start { width: 100%; margin-top: 22px; }
    #startScreen.sionindo-landing .sl-primary .sl-arrow { font-size: 18px; font-weight: 400; }
    #startScreen.sionindo-landing .sl-secondary { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 2px 16px; margin-top: 7px; }
    #startScreen.sionindo-landing .sl-purchase {
      display: flex; align-items: baseline; justify-content: center; flex-wrap: wrap; gap: 4px 7px;
      padding: 13px 20px; border-top: 1px solid var(--sl-line); color: var(--sl-muted); font-size: 13px;
    }
    #startScreen.sionindo-landing .sl-purchase a { color: var(--sl-accent); font-weight: 600; text-underline-offset: 3px; min-height: 30px; display: inline-flex; align-items: center; }
    #startScreen.sionindo-landing .sl-status { margin-top: 12px; padding: 11px 13px; border-radius: 8px; background: var(--sl-soft); color: var(--sl-accent); font-size: 13px; overflow-wrap: anywhere; }
    #startScreen.sionindo-landing .sl-status[data-kind="error"] { color: var(--sl-error); background: var(--sl-error-bg); }
    #startScreen.sionindo-landing .sl-free-heading { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
    #startScreen.sionindo-landing .sl-badge { display: inline-flex; padding: 5px 9px; border-radius: 6px; background: var(--sl-soft); color: var(--sl-accent); font-size: 11px; font-weight: 650; }
    #startScreen.sionindo-landing .sl-free-info { list-style: none; display: grid; gap: 14px; padding: 0; margin: 24px 0 20px; color: var(--sl-muted); font-size: 14px; }
    #startScreen.sionindo-landing .sl-free-info li { display: flex; gap: 10px; align-items: flex-start; }
    #startScreen.sionindo-landing .sl-free-info li::before { content: "✓"; font-weight: 700; color: var(--sl-accent); }
    #startScreen.sionindo-landing .sl-free-note { margin-top: 14px; font-size: 12px; color: var(--sl-muted); text-align: center; }
    #startScreen.sionindo-landing .sl-footer { border-top: 1px solid var(--sl-line); }
    #startScreen.sionindo-landing .sl-footer-inner { width: min(100%, 1120px); display: flex; align-items: center; justify-content: space-between; gap: 10px 20px; flex-wrap: wrap; margin: 0 auto; padding: 13px 32px; color: var(--sl-muted); font-size: 12px; }
    #startScreen.sionindo-landing .sl-dialog {
      width: min(480px, calc(100% - 32px)); max-height: calc(100svh - 32px);
      margin: auto; padding: 0; border: 1px solid var(--sl-line); border-radius: var(--sl-radius);
      background: var(--sl-paper); color: var(--sl-ink); box-shadow: 0 24px 80px #00000066;
      overflow: auto; font: inherit;
    }
    #startScreen.sionindo-landing .sl-dialog::backdrop { background: #060d18b3; }
    #startScreen.sionindo-landing .sl-dialog-inner { padding: 24px; }
    #startScreen.sionindo-landing .sl-dialog-header { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 14px; }
    #startScreen.sionindo-landing .sl-close { width: 44px; min-height: 44px; padding: 0; border: 1px solid var(--sl-line); border-radius: 9px; background: var(--sl-paper); color: var(--sl-ink); font-size: 23px; line-height: 1; }
    #startScreen.sionindo-landing .sl-dialog p { color: var(--sl-muted); font-size: 14px; }
    #startScreen.sionindo-landing .sl-rules { display: grid; gap: 12px; margin: 18px 0 0; padding-left: 21px; color: var(--sl-muted); font-size: 14px; }
    #startScreen.sionindo-landing .sl-contact { display: block; margin-top: 15px; color: var(--sl-ink); font-size: 15px; font-weight: 600; }
    #startScreen.sionindo-landing .sl-package-list { display: grid; gap: 10px; margin-top: 20px; }
    #startScreen.sionindo-landing .sl-package-option { width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 12px; min-height: 60px; padding: 14px; border: 1px solid var(--sl-line); border-radius: 9px; background: var(--sl-paper); color: var(--sl-ink); text-align: left; }
    #startScreen.sionindo-landing .sl-package-option:hover,
    #startScreen.sionindo-landing .sl-package-option[aria-pressed="true"] { border-color: var(--sl-accent); background: var(--sl-soft); }
    #startScreen.sionindo-landing .sl-package-option small { display: block; margin-top: 3px; color: var(--sl-muted); font-size: 12px; }
    #startScreen.sionindo-landing .sl-dialog-note { margin-top: 16px !important; font-size: 12px !important; }
    @media (max-width: 600px) {
      #startScreen.sionindo-landing .sl-header-inner { padding: 18px 20px; }
      #startScreen.sionindo-landing .sl-wordmark { font-size: 22px; }
      #startScreen.sionindo-landing .sl-wordmark small { font-size: 9px; letter-spacing: 3.9px; }
      #startScreen.sionindo-landing .sl-top-links { gap: 13px; }
      #startScreen.sionindo-landing .sl-guide-link { display: none; }
      #startScreen.sionindo-landing .sl-main { padding: 25px 14px 28px; }
      #startScreen.sionindo-landing .sl-intro { margin-bottom: 22px; }
      #startScreen.sionindo-landing .sl-intro p { max-width: 300px; margin: 10px auto 0; font-size: 13px; }
      #startScreen.sionindo-landing .sl-panel-content { padding: 22px 20px 16px; }
      #startScreen.sionindo-landing .sl-row { gap: 13px; }
      #startScreen.sionindo-landing .sl-settings .sl-row { grid-template-columns: minmax(0, 1fr); gap: 17px; }
      #startScreen.sionindo-landing .sl-footer-inner { padding: 12px 20px; }
      #startScreen.sionindo-landing .sl-purchase a { min-height: 44px; }
    }
    @media (max-width: 390px) {
      #startScreen.sionindo-landing .sl-row { grid-template-columns: minmax(0, 1fr); gap: 17px; }
      #startScreen.sionindo-landing .sl-panel-content { padding-left: 17px; padding-right: 17px; }
      #startScreen.sionindo-landing .sl-tab { font-size: 13px; }
      #startScreen.sionindo-landing .sl-eyebrow { font-size: 10px; letter-spacing: 1.2px; }
    }
    @media (prefers-reduced-motion: reduce) {
      #startScreen.sionindo-landing .sl-primary { transition: none; }
    }

/* Only the start screen changes; the existing exam/header layout is preserved. */
body.landing-active { background: #101927; }
body.landing-active > .app-shell { width: 100%; margin: 0; padding: 0; }
body.landing-active > .app-shell > .topbar { display: none; }
#startScreen.sionindo-landing { border: 0; border-radius: 0; }
#startScreen.sionindo-landing .hidden { display: none !important; }
#startScreen.sionindo-landing .sl-control { min-width: 0; overflow-wrap: anywhere; white-space: normal; }
#startScreen.sionindo-landing .sl-name label { margin: 0; }
#startScreen.sionindo-landing .sl-status:empty { display: none; }
#startScreen.sionindo-landing .sl-control:disabled { cursor: wait; }
#startScreen.sionindo-landing .sl-text-button { white-space: normal; }
#startScreen.sionindo-landing .sl-footer-report { overflow-wrap: anywhere; }
#startScreen.sionindo-landing .sl-logo-image { filter: brightness(0) invert(1); }
#startScreen.sionindo-landing .sl-wordmark,
#startScreen.sionindo-landing .sl-wordmark small,
#startScreen.sionindo-landing .sl-eyebrow { letter-spacing: 0; }
@media (max-width: 600px) {
  #startScreen.sionindo-landing h1 { font-size: 27px; }
  #startScreen.sionindo-landing .sl-name input { flex-basis: 100%; }
  #startScreen.sionindo-landing .sl-footer-inner { align-items: flex-start; }
}