:root {
        color-scheme: dark;
        --bg0: #0b0c0b;
        --bg1: #151613;
        --panel: rgba(242, 239, 231, 0.035);
        --panel-border: rgba(242, 239, 231, 0.12);
        --text: #f2efe7;
        --muted: #b8b1a3;
        --accent: #d7b56d;
        --accent-2: #f0cf7f;
        --button-text: #0a0a10;
      }

      * {
        box-sizing: border-box;
      }

      :focus-visible {
        outline: 2px solid var(--accent);
        outline-offset: 3px;
      }

      @media (prefers-reduced-motion: reduce) {
        *, *::before, *::after {
          animation-duration: 0.01ms !important;
          animation-iteration-count: 1 !important;
          scroll-behavior: auto !important;
          transition-duration: 0.01ms !important;
        }
      }
      body {
        margin: 0;
        min-height: 100vh;
        font-family: "Segoe UI", "Inter", system-ui, sans-serif;
        color: var(--text);
        background: var(--bg0);
      }

      .shell {
        max-width: 980px;
        margin: 0 auto;
        padding: 32px 20px 56px;
      }

      .skip-to-content {
        position: fixed;
        top: 8px;
        left: 8px;
        z-index: 1000;
        padding: 12px 16px;
        color: var(--text);
        background: var(--bg0);
        transform: translateY(calc(-100% - 16px));
      }

      .skip-to-content:focus {
        transform: none;
        outline: 2px solid var(--accent);
      }

      .topbar {
        display: grid;
        grid-template-columns: max-content minmax(0, 1fr);
        align-items: center;
        gap: 20px;
        margin-bottom: 32px;
      }

      .brand {
        display: inline-flex;
        align-items: center;
        gap: 7px;
        color: var(--text);
        font-size: 20px;
        font-weight: 600;
        letter-spacing: -0.02em;
        line-height: 1;
        white-space: nowrap;
      }

      .brand-mark {
        position: relative;
        display: inline-block;
        flex: 0 0 15px;
        width: 15px;
        height: 21px;
        border-top: 4px solid currentColor;
        border-bottom: 4px solid currentColor;
        transform: skewY(-13deg);
      }

      .brand-mark::after {
        position: absolute;
        top: 4px;
        left: 0;
        width: 10px;
        height: 4px;
        background: currentColor;
        content: "";
      }

      nav {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
      }

      .topbar-actions {
        display: flex;
        min-width: 0;
        align-items: center;
        justify-content: flex-end;
        gap: 12px;
      }

      .desktop-site-nav {
        min-width: 0;
        flex: 1 1 auto;
        align-items: center;
        justify-content: flex-end;
        flex-wrap: nowrap;
        gap: 2px;
      }

      .mobile-site-nav {
        display: none;
        position: relative;
        flex-shrink: 0;
      }

      .mobile-site-nav > summary {
        min-height: 38px;
        align-items: center;
        padding: 8px 12px;
        border: 1px solid var(--panel-border);
        border-radius: 4px;
        color: var(--text);
        background: rgba(16, 17, 15, 0.72);
        cursor: pointer;
        list-style: none;
      }

      .mobile-site-nav > summary::-webkit-details-marker {
        display: none;
      }

      .nav-link {
        flex: 0 0 auto;
        padding: 10px 7px 8px;
        border: 0;
        border-bottom: 2px solid transparent;
        border-radius: 2px;
        color: var(--muted);
        font-size: 14px;
        line-height: 1.2;
        white-space: nowrap;
        text-decoration: none;
      }

      .desktop-site-nav .nav-link:hover {
        color: var(--text);
        background: transparent;
        text-decoration: underline;
        text-decoration-color: var(--accent);
        text-underline-offset: 5px;
      }

      .desktop-site-nav .nav-link.active {
        color: var(--text);
        border-bottom-color: var(--accent);
        background: transparent;
        font-weight: 600;
      }

      .hero {
        margin-bottom: 22px;
      }

      .eyebrow {
        margin: 0 0 10px;
        color: var(--accent);
        text-transform: uppercase;
        letter-spacing: 0.12em;
        font-size: 0.82rem;
        font-weight: 700;
      }

      h1 {
        margin: 0 0 12px;
        font-size: clamp(2rem, 5vw, 3.2rem);
        line-height: 1.02;
      }

      .summary {
        max-width: 760px;
        margin: 0;
        color: var(--muted);
        font-size: 1.02rem;
        line-height: 1.65;
      }

      .grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
        gap: 16px;
      }

      
      .card {
        padding: 18px 18px 16px;
        border-radius: 6px;
        background: var(--panel);
        border: 1px solid var(--panel-border);
        box-shadow: none;
      }

      .card h2 {
        margin: 0 0 10px;
        font-size: 1rem;
      }

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

      .card ul {
        margin: 0;
        padding-left: 18px;
        color: var(--text);
        line-height: 1.55;
      }

      .card li + li {
        margin-top: 8px;
      }
    

      a {
        color: var(--accent);
      }

      footer {
        margin-top: 28px;
        padding-top: 16px;
        border-top: 1px solid var(--panel-border);
        color: var(--muted);
        line-height: 1.6;
      }

      .accent {
        color: var(--accent-2);
      }

      @media (max-width: 1023px) {
        .topbar {
          grid-template-columns: minmax(0, 1fr) auto;
          gap: 12px;
          align-items: center;
          margin-bottom: 24px;
        }

        .topbar-actions {
          width: auto;
          flex-wrap: nowrap;
        }

        .desktop-site-nav {
          display: none;
        }

        .mobile-site-nav {
          display: block;
        }

        .mobile-site-nav > summary {
          display: inline-flex;
        }

        .mobile-site-nav:not([open]) > nav {
          display: none;
        }

        .mobile-site-nav[open] > nav {
          position: fixed;
          top: 72px;
          right: 12px;
          z-index: 60;
          display: grid;
          width: min(78vw, 280px);
          max-height: calc(100dvh - 84px);
          overflow-y: auto;
          padding: 8px;
          border: 1px solid var(--panel-border);
          border-radius: 4px;
          background: #151613;
          box-shadow: 0 18px 40px rgba(0, 0, 0, 0.38);
        }

        .mobile-site-nav .nav-link {
          min-height: 40px;
          padding: 10px 12px;
          border: 0;
          border-left: 2px solid transparent;
          border-radius: 2px;
        }

        .mobile-site-nav .nav-link:hover,
        .mobile-site-nav .nav-link.active {
          color: var(--text);
          border-color: transparent;
          border-left-color: var(--accent);
          background: rgba(242, 239, 231, 0.045);
        }

        .mobile-site-nav .nav-link.active {
          font-weight: 600;
        }
      }

      
      .topbar-actions {
        display: flex;
        min-width: 0;
        flex-wrap: wrap;
        align-items: center;
        justify-content: flex-end;
        gap: 12px;
        margin-left: auto;
      }

      .site-auth {
        position: relative;
        min-width: 0;
        max-width: 100%;
        z-index: 50;
        color: #eeeeec;
        font: 14px/1.45 "Inter", system-ui, sans-serif;
        --auth-surface: #181818;
        --auth-field: #111111;
        --auth-border: #3b3b39;
        --auth-text: #eeeeec;
        --auth-muted: #aaa9a4;
        --auth-focus: #e1d9bc;
      }

      .site-auth.is-floating {
        position: fixed;
        top: 14px;
        right: 14px;
        z-index: 1200;
      }

      .site-auth[hidden] {
        display: none !important;
      }

      .site-auth-trigger {
        display: inline-flex;
        max-width: 100%;
        align-items: center;
        gap: 12px;
        min-height: 44px;
        padding: 0 14px;
        border: 1px solid var(--auth-border);
        border-radius: 12px;
        color: var(--auth-text);
        background: transparent;
        box-shadow: none;
        cursor: pointer;
        user-select: none;
        list-style: none;
      }

      .site-auth-trigger::-webkit-details-marker {
        display: none;
      }

      .site-auth-trigger::after {
        width: 7px;
        height: 7px;
        flex: 0 0 7px;
        border-right: 1.5px solid currentColor;
        border-bottom: 1.5px solid currentColor;
        content: "";
        transform: translateY(-2px) rotate(45deg);
      }

      .site-auth-trigger:hover,
      .site-auth[open] > .site-auth-trigger {
        border-color: #eeeeec;
        background: #242424;
      }

      .site-auth-trigger:focus-visible {
        outline: 2px solid var(--auth-focus);
        outline-offset: 3px;
      }

      .site-auth[open] > .site-auth-trigger::after {
        transform: translateY(2px) rotate(225deg);
      }

      [data-site-auth-label] {
        min-width: 0;
        max-width: 14ch;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
      }

      .site-auth-avatar {
        display: none;
      }

      .site-auth-panel {
        position: absolute;
        top: calc(100% + 8px);
        right: 0;
        display: grid;
        gap: 12px;
        box-sizing: border-box;
        width: min(320px, calc(100vw - 28px));
        max-height: min(760px, calc(100vh - 96px));
        overflow-y: auto;
        overscroll-behavior: contain;
        padding: 22px;
        border: 1px solid var(--auth-border);
        border-radius: 8px;
        color: var(--auth-text);
        background: var(--auth-surface);
        box-shadow: 0 8px 24px #0004;
      }

      .site-auth-session-actions > .site-auth-account-link {
        grid-column: 1 / -1;
      }

      .site-auth-footer {
        display: flex;
        flex-wrap: wrap;
        gap: 0 18px;
        margin: 4px 0 0;
        padding-top: 8px;
        border-top: 1px solid var(--auth-border);
      }

      .site-auth-footer a {
        display: inline-flex;
        align-items: center;
        min-height: 44px;
        color: var(--auth-muted);
        font-size: 12px;
        text-decoration: underline;
        text-underline-offset: 3px;
      }

      .site-auth-form input { box-sizing: border-box; }

      .site-auth:not([open]) .site-auth-panel {
        display: none;
      }

      .site-auth-panel :focus-visible {
        outline: 2px solid var(--auth-focus);
        outline-offset: 3px;
      }

      [data-site-auth-status]:empty {
        display: none;
      }

      .site-auth-copy,
      .site-auth-user,
      .site-auth-account-link {
        color: var(--auth-muted);
        font-size: 0.88rem;
        line-height: 1.45;
      }

      .site-auth-user {
        color: var(--auth-text);
        font-weight: 500;
        overflow-wrap: anywhere;
      }

      .site-auth-account-link {
        display: inline-flex;
        align-items: center;
        min-height: 44px;
        color: var(--auth-text);
        font-weight: 500;
        text-decoration: underline;
        text-underline-offset: 3px;
      }

      .site-auth-copy.error {
        color: #ffaaaa;
      }

      .site-auth-copy.success {
        color: #8ce0aa;
      }

      .site-auth-form {
        display: grid;
        gap: 10px;
        min-inline-size: 0;
        margin: 0;
        padding: 0;
        border: 0;
      }

      .site-auth-form[hidden],
      .site-auth-form [hidden],
      .site-auth-session-actions[hidden] {
        display: none !important;
      }

      .site-auth-tabs {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 4px;
      }

      .site-auth-tabs button {
        min-height: 44px;
        padding: 8px 4px;
        border: 0;
        border-bottom: 2px solid transparent;
        color: var(--auth-muted);
        background: transparent;
        font: inherit;
        cursor: pointer;
      }

      .site-auth-tabs button[aria-selected="true"] {
        color: var(--auth-text);
        border-bottom-color: var(--auth-focus);
      }

      .site-auth-fields { display: grid; gap: 10px; }

      .site-auth-form label {
        display: grid;
        gap: 5px;
        color: var(--auth-muted);
        font-size: 0.86rem;
        font-weight: 500;
      }

      .site-auth-form input {
        min-height: 44px;
        width: 100%;
        border: 1px solid var(--auth-border);
        border-radius: 6px;
        padding: 8px 11px;
        color: var(--auth-text);
        background: var(--auth-field);
        font: inherit;
        font-weight: 500;
      }

      .site-auth-form input::placeholder {
        color: #96958f;
      }

      .site-auth-form input:is(:autofill, :-webkit-autofill) {
        box-shadow: 0 0 0 1000px var(--auth-field) inset;
        -webkit-text-fill-color: var(--auth-text);
        caret-color: var(--auth-text);
      }

      .site-auth-form input:focus {
        border-color: var(--auth-focus);
        outline: 2px solid var(--auth-focus);
        outline-offset: 1px;
      }

      .site-auth-actions,
      .site-auth-session-actions {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 8px;
      }

      .site-auth-actions { grid-template-columns: 1fr; }

      .site-auth-actions button,
      .site-auth-session-actions button {
        min-height: 44px;
        border: 1px solid var(--auth-border);
        border-radius: 8px;
        padding: 8px 10px;
        color: var(--auth-text);
        background: transparent;
        font: inherit;
        font-weight: 500;
        cursor: pointer;
      }

      .site-auth-actions button {
        border-color: #eeeeec;
        color: #0a0a10;
        background: #eeeeec;
      }

      .site-auth-actions button:hover,
      .site-auth-session-actions button:hover {
        border-color: #eeeeec;
        background: #292929;
      }

      .site-auth-actions button:hover {
        background: #ffffff;
      }

      .site-auth-actions button:disabled,
      .site-auth-session-actions button:disabled {
        cursor: wait;
        opacity: 0.66;
      }

      @media (max-width: 760px) {
        .topbar-actions {
          width: 100%;
          justify-content: space-between;
        }

        .site-auth {
          margin-left: auto;
        }

        .site-auth.is-floating {
          top: 10px;
          right: 10px;
        }

        body.stem-trainer-public .site-auth.is-floating {
          top: 112px;
          right: 12px;
        }
      }

      @font-face { font-family:Inter; src:url("/gloss-fonts/InterVariable.woff2") format("woff2"); font-display:swap; }
:root {
  color-scheme: dark;
  --packs-paper: #0b0c0d;
  --packs-paper-white: #111214;
  --packs-paper-shade: #141618;
  --packs-ink: #f4f4f4;
  --packs-muted: #a4a7ab;
  --packs-rule: #292b2e;
  --packs-accent: #ededed;
  --packs-accent-dark: #ffffff;
  --packs-success: #a2bd99;
  --packs-error: #e59a89;
  --packs-button: #ededed;
  --packs-button-text: #111214;
}

[hidden] { display: none !important; }

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--packs-ink);
  background: var(--packs-paper);
  font: 16px/1.55 Inter, system-ui, sans-serif;
}

button, input, textarea, select { font: inherit; }
a { color: var(--packs-accent); text-underline-offset: 3px; }
a:hover { color: var(--packs-accent-dark); }
:focus-visible { outline: 2px solid var(--packs-accent); outline-offset: 3px; }

.shell {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 22px 44px 40px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: none;
  margin: 0;
  padding: 0 0 14px;
  border-bottom: 0;
}

.brand {
  flex: 0 0 auto;
  gap: 9px;
  color: var(--packs-ink);
  font: 600 21px/1 Inter, system-ui, sans-serif;
  letter-spacing: -0.04em;
  text-decoration: none;
}
.brand:hover { color: var(--packs-ink); }
.brand-lign { color: var(--packs-accent); }
.tool-sidebar .brand,
.tool-sidebar .brand:hover,
.tool-sidebar .brand-lign { color: inherit; }

.topbar-actions {
  display: flex;
  min-width: 0;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
  margin-left: auto;
}

.desktop-site-nav {
  display: flex;
  min-width: 0;
  flex: 1 1 auto;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: flex-end;
  gap: 15px;
}

.nav-link,
.desktop-site-nav .nav-link {
  flex: 0 0 auto;
  min-height: 40px;
  padding: 8px 0 6px;
  border: 0;
  border-bottom: 1px solid transparent;
  border-radius: 0;
  color: var(--packs-muted);
  background: transparent;
  font: 14px/1.35 Inter, system-ui, sans-serif;
  text-decoration: none;
  white-space: nowrap;
}
.nav-link:hover,
.nav-link.active,
.nav-link[aria-current="page"] {
  border-color: var(--packs-accent);
  color: var(--packs-ink);
  background: transparent;
}

.mobile-site-nav { position: relative; flex-shrink: 0; }
.mobile-site-nav > summary {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: 8px 12px;
  border: 1px solid var(--packs-rule);
  border-radius: 0;
  color: var(--packs-ink);
  background: transparent;
  cursor: pointer;
  list-style: none;
}
.mobile-site-nav > summary::-webkit-details-marker { display: none; }
.mobile-site-nav[open] > nav {
  position: fixed;
  top: 72px;
  right: 14px;
  z-index: 60;
  display: grid;
  width: min(82vw, 300px);
  max-height: calc(100dvh - 88px);
  overflow-y: auto;
  padding: 8px 16px;
  border: 1px solid var(--packs-rule);
  border-radius: 0;
  background: var(--packs-paper-white);
  box-shadow: 0 12px 28px #00000055;
}
.mobile-site-nav .nav-link { min-height: 44px; white-space: normal; }
.mobile-site-nav .nav-link.active { border-color: var(--packs-accent); }

.site-auth {
  z-index: 50;
  color: var(--packs-ink);
  font: 14px/1.45 Inter, system-ui, sans-serif;
  --auth-surface: var(--packs-paper-white);
  --auth-field: #0b0c0d;
  --auth-border: var(--packs-rule);
  --auth-text: var(--packs-ink);
  --auth-muted: var(--packs-muted);
  --auth-focus: var(--packs-accent);
}
.site-auth-trigger {
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--packs-rule);
  border-radius: 0;
  color: var(--packs-ink);
  background: transparent;
  box-shadow: none;
}
.site-auth-trigger:hover,
.site-auth[open] > .site-auth-trigger { border-color: var(--packs-ink); background: var(--packs-paper-shade); }
.site-auth-panel {
  border-color: var(--packs-rule);
  border-radius: 0;
  color: var(--packs-ink);
  background: var(--packs-paper-white);
  box-shadow: 0 12px 28px #00000055;
}
.site-auth-heading { color: var(--packs-ink); font: 400 24px/1.2 Inter, system-ui, sans-serif; letter-spacing: -0.025em; }
.site-auth-form input { border-radius: 0; }
.site-auth-actions button,
.site-auth-session-actions button { border-radius: 0; font-family: Inter, system-ui, sans-serif; }
.site-auth-copy.error { color: var(--packs-error); }
.site-auth-copy.success { color: var(--packs-success); }

main#main-content {
  display: block;
  width: 100%;
  max-width: 860px;
  margin: 30px auto 0;
}

.hero {
  max-width: none;
  margin: 0 0 24px;
  text-align: left;
}
.eyebrow {
  margin: 0 0 16px;
  color: var(--packs-accent);
  font: 700 12px/1.3 Inter, system-ui, sans-serif;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}
.hero h1 {
  max-width: none;
  margin: 0;
  color: var(--packs-ink);
  font: 450 32px/1.25 Inter, system-ui, sans-serif;
  letter-spacing: -0.04em;
}
.summary { margin:12px 0 0; color:var(--packs-muted); font-size:15px; line-height:1.6; }

.grid { display: block; min-width: 0; max-width: none; margin: 0; }
.packs-primary-card {
  min-width: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  color: var(--packs-ink);
  background: transparent;
  box-shadow: none;
}
.packs-primary-card > h2 {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.packs-workspace { min-width: 0; padding: 0; }
.packs-form { display: grid; gap: 20px; min-width: 0; }
.packs-primary-card .packs-inline-note {
  margin: 0;
  padding: 0 0 10px 14px;
  border-bottom: 1px solid var(--packs-rule);
  color: var(--packs-muted);
  font: 14px/1.5 Inter, system-ui, sans-serif;
}

.packs-source-block { display: grid; gap: 0; min-width: 0; }
.packs-source-heading {
  display: flex;
  min-height: 40px;
  align-items: center;
  justify-content: flex-start;
  gap: 14px;
  padding: 0;
  border: 0;
}
.packs-upload-title {
  color: var(--packs-ink);
  font: 700 12px/1.35 Inter, system-ui, sans-serif;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}
.packs-mode-grid { display: inline-flex; gap: 4px; padding: 3px; border: 1px solid #363636; border-radius: 999px; background: #161616; box-shadow: none; }
.packs-mode-option {
  position: relative;
  display: inline-flex;
  min-width: 76px;
  min-height: 34px;
  align-items: center;
  justify-content: center;
  color: var(--packs-muted);
  cursor: pointer;
}
.packs-mode-option input[type="radio"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}
.packs-mode-option-title {
  display: inline-flex;
  width: 100%;
  min-height: 34px;
  align-items: center;
  justify-content: center;
  padding: 0 13px;
  border: 0;
  border-radius: 999px;
  color: inherit;
  font: 14px/1.25 Inter, system-ui, sans-serif;
}
.packs-mode-option:has(input:checked) .packs-mode-option-title {
  color: #f3f3f0;
  background: #303030;
  font-weight: 450;
}
.packs-mode-option:has(input:focus-visible) .packs-mode-option-title,
.packs-upload-field:has(input:focus-visible) {
  outline: 2px solid var(--packs-accent);
  outline-offset: 3px;
}

.packs-source-main { display: grid; min-width: 0; }
.packs-upload-field,
.packs-link-field {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  min-width: 0;
  min-height: 0;
  align-items: center;
  justify-items: stretch;
  gap: 6px 16px;
  padding: 16px 0;
  border: 0;
  border-bottom: 1px solid var(--packs-rule);
  border-radius: 0;
  color: var(--packs-ink);
  background: transparent;
  text-align: left;
}
.packs-upload-field.is-dragging { background: rgba(255, 255, 255, 0.08); outline: 1px solid #ffffff80; outline-offset: 4px; }
.packs-file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}
.packs-drop-title,
.packs-link-title {
  color: var(--packs-ink);
  font: 400 19px/1.25 Inter, system-ui, sans-serif;
  letter-spacing: -0.025em;
}
.packs-drop-copy,
.packs-field-help,
.packs-mode-copy {
  color: var(--packs-muted);
  font: 14px/1.48 Inter, system-ui, sans-serif;
}
.packs-submit,
.packs-result-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 0;
  font: 14px/1.2 Inter, system-ui, sans-serif;
  font-weight: 700;
  text-decoration: none;
}
.packs-selected-file { grid-column: 1 / -1; color: var(--packs-ink); font: 14px/1.4 Inter, system-ui, sans-serif; overflow-wrap: anywhere; }
.packs-field-help { grid-column: 1 / -1; display: block; max-width: 64ch; font-size: 13px; }
.packs-retention-note { margin-top: 2px; }
.packs-field-help a { color: var(--packs-accent); }

.packs-link-field { grid-template-columns: 1fr; place-items: stretch; }
.packs-link-inner { display: grid; width: 100%; gap: 8px; margin: 0; }
.packs-link-title { margin: 0; }
.packs-form input:not([type="radio"]):not([type="file"]),
.packs-form textarea {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid var(--packs-rule);
  border-radius: 0;
  color: var(--packs-ink);
  background: var(--packs-paper-white);
  font: 16px/1.45 Inter, system-ui, sans-serif;
}
.packs-form input::placeholder,
.packs-form textarea::placeholder { color: var(--packs-muted); opacity: 1; }
.packs-form input:not([type="radio"]):not([type="file"]):focus,
.packs-form textarea:focus { border-color: var(--packs-accent); outline: 2px solid var(--packs-accent); outline-offset: 1px; box-shadow: none; }

.packs-assist {
  border-top: 1px solid var(--packs-rule);
  border-bottom: 1px solid var(--packs-rule);
}
.packs-assist > summary,
.packs-details > summary { cursor: pointer; list-style: none; }
.packs-assist > summary::-webkit-details-marker,
.packs-details > summary::-webkit-details-marker { display: none; }
.packs-assist-summary {
  display: flex;
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 8px 0;
}
.packs-assist-main { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; }
.packs-assist-title { color: var(--packs-ink); font: 400 16px/1.3 Inter, system-ui, sans-serif; }
.packs-assist-copy { margin: 0; color: var(--packs-muted); font: 12px/1.4 Inter, system-ui, sans-serif; }
.packs-assist-action { min-width: 28px; min-height: 28px; display: inline-grid; place-items: center; color: var(--packs-accent); font: 20px/1 Inter, system-ui, sans-serif; }
.packs-assist-body { display: grid; gap: 14px; padding: 0 0 18px; }
.packs-support-grid { display: grid; gap: 18px; }
@media (min-width: 760px) { .packs-support-grid { grid-template-columns: minmax(0, 1.35fr) minmax(220px, 0.65fr); } }
.packs-secondary-field { display: grid; gap: 7px; color: var(--packs-ink); font: 700 14px/1.4 Inter, system-ui, sans-serif; }
.packs-secondary-field textarea { min-height: 132px; resize: vertical; }
.packs-subtitle-box { display: grid; align-content: start; gap: 8px; padding: 0; border: 0; border-radius: 0; background: transparent; }
.packs-subtitle-box input[type="file"] { width: 100%; color: var(--packs-muted); font: 14px Inter, system-ui, sans-serif; }
.packs-subtitle-box input[type="file"]::file-selector-button { min-height: 40px; margin-right: 8px; padding: 6px 10px; border: 1px solid var(--packs-rule); border-radius: 0; color: var(--packs-ink); background: var(--packs-paper-white); font: inherit; cursor: pointer; }

.packs-footer-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px; }
.packs-actions,
.packs-result-actions,
.packs-list-item-links { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.packs-submit {
  padding: 0 22px;
  border: 1px solid var(--packs-accent);
  color: var(--packs-button-text);
  background: var(--packs-button);
  cursor: pointer;
}
.packs-submit:hover { border-color: var(--packs-accent-dark); color: var(--packs-button-text); background: var(--packs-accent-dark); }
.packs-submit:disabled { cursor: not-allowed; opacity: 0.55; }
.packs-status { min-height: 1.4em; color: var(--packs-muted); font: 14px/1.45 Inter, system-ui, sans-serif; }
.packs-status:empty { display: none; }
.packs-status.success { color: var(--packs-success); }
.packs-status.error { color: var(--packs-error); }

.packs-account-panel,
.packs-result {
  display: grid;
  gap: 12px;
  padding: 18px 0;
  border-top: 3px double var(--packs-rule);
  border-bottom: 1px solid var(--packs-rule);
  border-radius: 0;
  color: var(--packs-ink);
  background: transparent;
}
.packs-account-top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; }
.packs-account-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.packs-account-panel-title,
.packs-result-title { color: var(--packs-accent); font: 700 12px/1.3 Inter, system-ui, sans-serif; letter-spacing: 0.1em; text-transform: uppercase; }
.packs-account-summary-meta,
.packs-result-meta { color: var(--packs-ink); font: 15px/1.5 Inter, system-ui, sans-serif; }
.packs-details { border-top: 1px solid var(--packs-rule); border-radius: 0; background: transparent; }
.packs-details[hidden],
.packs-result[hidden] { display: none !important; }
.packs-details > summary { min-height: 44px; padding: 10px 0; color: var(--packs-ink); font: 16px/1.45 Inter, system-ui, sans-serif; }
.packs-details-body { display: grid; gap: 12px; padding: 0 0 16px; }
.packs-auth-form,
.packs-deposit-form { display: grid; gap: 12px; border: 0; padding: 0; margin: 0; min-inline-size: 0; }
.packs-grid { display: grid; gap: 12px; }
.packs-grid label,
.packs-deposit-form label { display: grid; gap: 6px; color: var(--packs-muted); font: 14px/1.4 Inter, system-ui, sans-serif; }
.packs-submit-secondary,
.packs-result-link { border: 1px solid var(--packs-rule); color: var(--packs-ink); background: transparent; padding: 0 14px; }
.packs-result-link[aria-disabled="true"] { pointer-events: none; opacity: 0.55; }
.packs-list { display: grid; gap: 0; }
.packs-list-item { padding: 12px 0; border-bottom: 1px solid var(--packs-rule); border-radius: 0; background: transparent; }
.packs-list-item-title,
.packs-ledger-delta { color: var(--packs-ink); font: 700 15px/1.4 Inter, system-ui, sans-serif; }
.packs-list-item-meta,
.packs-list-empty { color: var(--packs-muted); font: 14px/1.45 Inter, system-ui, sans-serif; }
.packs-result-actions a { min-width: 72px; }

footer {
  max-width: 1080px;
  margin: 48px auto 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--packs-rule);
  color: var(--packs-muted);
  font: 13px/1.5 Inter, system-ui, sans-serif;
}
footer nav { display: flex; flex-wrap: wrap; gap: 0 18px; margin-top: 8px; }
footer a { min-height: 36px; color: var(--packs-muted); }


.packs-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;
}
.hidden-field { position: absolute; left: -99999px; opacity: 0; pointer-events: none; }

@media (max-width: 1023px) {
  .topbar { gap: 12px; margin-bottom: 0; }
  .topbar-actions { gap: 10px; }
  .desktop-site-nav { display: none; }
  .mobile-site-nav { display: block; }
  .mobile-site-nav > summary { display: inline-flex; }
  .mobile-site-nav:not([open]) > nav { display: none; }
}

@media (max-width: 760px) {
  .shell { padding: 16px 18px 36px; }
  .topbar { align-items: center; margin-bottom: 0; padding-bottom: 12px; }
  .brand { font-size: 20px; }
  .topbar-actions { width: auto; align-items: center; gap: 8px; }
  .site-auth-trigger { min-height: 44px; gap: 8px; padding: 0 10px; }
  .mobile-site-nav > summary { min-height: 44px; padding: 8px 10px; }
  main#main-content { max-width: 620px; margin: 28px auto 0; }
  .hero { margin: 0 0 16px; }
  .hero h1 { margin-bottom: 7px; font-size: 28px; line-height: 1.25; }
  .grid { max-width: none; }
  .packs-form { gap: 20px; }
  .packs-source-heading { min-height: 36px; }
  .packs-mode-option { min-height: 36px; }
  .packs-mode-option-title { min-height: 36px; }
  .packs-drop-title,
  .packs-link-title { font-size: 18px; }
  .packs-upload-field { gap: 6px 10px; padding: 14px 0; }
  .packs-link-field { padding: 14px 0; }
  .packs-retention-note { max-width: 100%; }
  .packs-footer-row,
  .packs-account-top { align-items: flex-start; }
  .packs-account-actions { justify-content: flex-start; }
  .packs-result-actions { gap: 8px; }
  footer { margin-top: 36px; }
}

@media (max-width: 360px) {
  .shell { padding-right: 14px; padding-left: 14px; }
  .site-auth-trigger { padding: 0 8px; }

  .packs-mode-grid { gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
}

.packs-drop-title { color:#c0c0c0; font-size:15px; font-weight:400; letter-spacing:0; }
.packs-upload-field {
  position:relative;
  grid-template-columns:minmax(0,1fr);
  align-content:end;
  justify-items:center;
  gap:12px;
  min-height:330px;
  padding:24px;
  border:1px solid #ffffff17;
  border-radius:14px;
  background:radial-gradient(ellipse at 50% 36%,#232323 0%,#171717 45%,#111111 100%);
  text-align:center;
  cursor:pointer;
}
.packs-drop-title { position:absolute; top:50%; left:50%; width:max-content; display:grid; justify-items:center; gap:22px; transform:translate(-50%,-50%); }
.packs-drop-title::before { content:""; display:block; width:112px; height:112px; border:1px solid #ffffff24; border-radius:50%; background:linear-gradient(145deg,#ffffff12,#ffffff04); }
.packs-drop-title::after { content:""; position:absolute; top:43px; left:calc(50% - 7px); width:0; height:0; border-top:13px solid transparent; border-bottom:13px solid transparent; border-left:21px solid #ffffffa6; }
.packs-upload-field:hover { border-color:#ffffff32; }
.packs-upload-field:hover .packs-drop-title::before { background:#ffffff10; }
.packs-upload-field:hover .packs-drop-title::after { border-left-color:#ffffffd1; }
.packs-upload-field .packs-field-help { max-width:none; font-size:12px; text-align:center; }
#mediaUploadLabel > .packs-field-help:not(#mediaPrepHelp) { display:none; }
.packs-mode-option-title,.packs-mode-option:has(input:checked) .packs-mode-option-title { font-weight:450; }
.packs-assist-title { font-size:14px; }
.packs-submit { border-radius:6px; font-weight:550; font-size:13px; }
.packs-retention-note { font-size:12px; }
.topbar-actions { width:auto; flex:0 0 auto; gap:8px; }
.site-auth-trigger { border-radius:6px; font-size:13px; }
.tool-layout .tool-sidebar { display:flex; flex-direction:column; width:180px; padding:32px 20px; background:#000; border-right:1px solid #242628; }
.tool-layout .tool-sidebar .brand { color:#f4f4f4; font:500 21px/1.2 Inter,system-ui,sans-serif; letter-spacing:-.055em; }
.tool-layout .tool-sidebar .desktop-site-nav { flex:0 0 auto; justify-content:flex-start; gap:4px; margin-top:52px; }
.tool-layout .tool-sidebar .nav-link { position:relative; display:flex; align-items:center; min-height:40px; padding:9px 0; border:0; color:#a4a7ab; background:transparent; font-size:13px; font-weight:400; line-height:1.4; }
.tool-layout .tool-sidebar .nav-link:hover,.tool-layout .tool-sidebar .nav-link[aria-current] { color:#fff; }
.tool-layout .tool-sidebar .nav-link[aria-current] { font-weight:500; }
.tool-layout .tool-sidebar .nav-link[aria-current]::before { content:''; position:absolute; left:-20px; top:12px; bottom:12px; width:2px; background:#f4f4f4; }
.tool-layout .mobile-site-nav[open] > nav { background:#000; border-color:#303236; }
footer a { font-size:12px; text-decoration:none; }
a,button,summary { transition:color 140ms ease,border-color 140ms ease,background-color 140ms ease; }
@media(min-width:701px) { body.tool-layout { padding-left:180px; } }
@media(max-width:700px) { .tool-layout .tool-sidebar { display:none; } .packs-upload-field { padding:20px 16px; } .packs-assist-summary { gap:8px; } .packs-assist-main { display:grid; } }

.hero { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }
main#main-content { max-width:1040px; margin:clamp(44px,8vh,78px) auto 0; }
@media(min-width:1200px) {
  .grid { display:grid; grid-template-columns:minmax(0,1.55fr) minmax(0,.95fr); align-items:start; gap:clamp(38px,5vw,68px); }
}
@media(max-width:1199px) {
  main#main-content { max-width:740px; }
  .grid { display:block; }
}
@media(max-width:760px) {
  main#main-content { max-width:620px; margin:28px auto 0; }
  .packs-upload-field { min-height:300px; padding:24px 18px; }
  .packs-drop-title { gap:16px; }
  .packs-drop-title::before { width:70px; height:70px; }
  .packs-drop-title::after { top:25px; left:calc(50% - 5px); border-top-width:9px; border-bottom-width:9px; border-left-width:15px; }
}
@media(max-width:360px) {
  .packs-drop-title { gap:12px; }
  .packs-drop-title::before { width:64px; height:64px; }
  .packs-drop-title::after { top:22px; left:calc(50% - 4px); border-top-width:8px; border-bottom-width:8px; border-left-width:13px; }
}

      /* Match the homepage rail; keep the account controls above the workspace. */
.tool-layout { padding-left: 180px; }
.tool-sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: 180px;
  padding: 36px 18px;
  overflow-y: auto;
  background: #000;
  color: #f6f3ed;
  z-index: 3;
}
.tool-sidebar .brand { text-decoration: none; }
.tool-sidebar .desktop-site-nav {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0;
  margin-top: 64px;
}
.tool-sidebar .nav-link {
  white-space: normal;
  padding: 16px 0;
  border: 0;
  border-top: 1px solid #ffffff40;
  border-radius: 0;
  color: #f6f3ed;
  background: transparent;
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
}
.tool-sidebar .nav-link:hover,
.tool-sidebar .nav-link[aria-current] { color: #e5c39b; background: transparent; }
.tool-sidebar .nav-link[aria-current] { font-weight: 700; }
.tool-sidebar a:focus-visible { outline: 2px solid #e5c39b; outline-offset: 4px; }
.tool-layout .tool-topbar { display: flex; justify-content: flex-end; }
.tool-layout .tool-topbar > .brand,
.tool-layout .mobile-site-nav { display: none; }
@media (max-width: 1050px) and (min-width: 701px) {
  .tool-layout { padding-left: 160px; }
  .tool-sidebar { width: 160px; padding: 28px 16px; }
}
@media (max-width: 700px) {
  .tool-layout { padding-left: 0; }
  .tool-sidebar { display: none; }
  .tool-layout .tool-topbar > .brand { display: inline-flex; }
  .tool-layout .mobile-site-nav { display: block; }
  .tool-layout .topbar-actions { flex-wrap: nowrap; }
  .tool-layout .mobile-site-nav > summary { display: inline-flex; }
  .tool-layout .mobile-site-nav:not([open]) > nav { display: none; }
  .tool-layout .mobile-site-nav[open] > nav {
    position: fixed;
    top: 72px;
    right: 12px;
    z-index: 60;
    display: grid;
    width: min(78vw, 280px);
    max-height: calc(100dvh - 84px);
    overflow-y: auto;
    padding: 8px;
    background: #000;
    border: 1px solid #ffffff40;
    border-radius: 4px;
  }
  .tool-layout .mobile-site-nav .nav-link { white-space: normal; min-height: 44px; }
}