/* NotebookLM community landing page. Shared brand tokens live in site.css. */
.notebooklm-page h1, .notebooklm-page h2, .notebooklm-page h3 { font-weight: 800; }
.nb-hero { display: grid; grid-template-columns: 1.13fr 1fr; gap: 72px; align-items: center; padding-block: 82px 88px; }
.nb-community { letter-spacing: .1em; margin-bottom: 28px; }
.nb-community > span { font-size: 23px; }
.nb-hero h1 { font-size: clamp(46px, 5.2vw, 72px); line-height: 1.04; letter-spacing: -.055em; }
.nb-hero h1 em { font-style: normal; color: var(--accent); }
.nb-intro { max-width: 560px; margin-top: 26px; font-size: 20px; line-height: 1.65; color: var(--text-2); }
.nb-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 20px; margin-top: 30px; }
.nb-text-link { font-size: 14px; font-weight: 800; text-underline-offset: 5px; }
.nb-text-link span { margin-left: 5px; }
.nb-upfront { margin-top: 24px; font-size: 13px; color: var(--text-2); line-height: 1.8; }
.nb-upfront a { text-underline-offset: 3px; }
.nb-path-preview { padding: 28px 30px 22px; border: 1px solid var(--border); background: var(--surface); border-radius: 20px; box-shadow: var(--shadow-float); position: relative; }
.nb-preview-top { display: flex; gap: 12px; justify-content: space-between; align-items: center; }
.nb-preview-top .eyebrow { font-size: 9px; letter-spacing: .09em; }
.nb-example { font-size: 10px; color: var(--text-2); white-space: nowrap; }
.nb-path-preview h2 { font-size: 35px; letter-spacing: -.04em; line-height: 1.12; margin-top: 23px; }
.nb-preview-steps { margin-top: 23px; }
.nb-preview-steps li { display: flex; align-items: center; gap: 18px; position: relative; padding: 18px 0; }
.nb-preview-steps li:not(:last-child)::after { content: ''; position: absolute; width: 1px; background: var(--border-strong); left: 18px; top: calc(50% + 22px); height: calc(50% - 4px); }
.nb-step-number { flex: 0 0 38px; height: 38px; display: grid; place-items: center; font-size: 12px; font-weight: 800; background: var(--surface-2); border: 1px solid var(--border); border-radius: 50%; color: var(--text-2); }
.nb-preview-steps h3 { font-size: 16px; line-height: 1.4; letter-spacing: -.02em; }
.nb-preview-steps p { color: var(--text-2); font-size: 12px; margin-top: 3px; }
.nb-preview-steps .nb-active-step { background: var(--accent-soft); border: 1px solid var(--accent-line); margin: 6px -14px; padding: 18px 13px; border-radius: 12px; }
.nb-active-step .nb-step-number { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.nb-preview-steps .nb-active-step::after { display: none; }
.nb-step-kicker { color: var(--accent); font-size: 9px; font-weight: 800; text-transform: uppercase; letter-spacing: .12em; }
.nb-wave { width: 30px; margin-left: auto; flex-shrink: 0; color: var(--accent); }
.nb-preview-note { border-top: 1px solid var(--border); padding-top: 17px; font-size: 12px; color: var(--text-2); }
.nb-preview-note span { color: var(--accent); padding-right: 10px; }
.nb-bridge { border-block: 1px solid var(--border); }
.nb-bridge .container { display: flex; justify-content: space-between; gap: 24px; padding-block: 23px; font-size: 14px; }
.nb-bridge p:first-child { color: var(--accent); font-weight: 800; }
.nb-bridge p:last-child { color: var(--text-2); }
.nb-bridge strong { color: var(--ink); font-weight: 400; }
.nb-section { padding-block: 95px; }
.notebooklm-page section:not(.nb-hero) h2 { font-size: clamp(32px, 3.5vw, 46px); letter-spacing: -.045em; line-height: 1.12; margin-top: 18px; }
.nb-explainer, .nb-maker, .nb-faq { display: grid; grid-template-columns: 1fr 1.1fr; gap: 85px; }
.nb-explainer-copy, .nb-maker-copy { font-size: 18px; color: var(--text-2); }
.nb-explainer-copy p + p, .nb-maker-copy p + p { margin-top: 18px; }
.nb-listen { display: grid; grid-template-columns: 1fr 1.1fr; gap: 60px; background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 44px; align-items: center; }
.nb-listen-copy > p:not(.eyebrow) { color: var(--text-2); margin-top: 20px; font-size: 16px; }
.nb-listen-copy > a { display: inline-block; margin-top: 22px; line-height: 1.7; }
.nb-audio-card { background: var(--canvas); border-radius: 14px; padding: 26px; min-width: 0; }
.nb-audio-label { color: var(--accent); display: flex; align-items: center; gap: 8px; font-size: 11px; }
.nb-audio-label .icon { width: 14px; height: 14px; }
.nb-audio-card h3 { font-size: 22px; letter-spacing: -.03em; margin-top: 18px; }
.nb-audio-card > p { color: var(--text-2); font-size: 12px; margin-top: 5px; }
.nb-audio-card audio { display: block; width: 100%; margin-top: 22px; }
.nb-transcript { margin-top: 18px; font-size: 12px; color: var(--text-2); }
.nb-transcript summary { cursor: pointer; padding-block: 8px; }
.nb-transcript p { margin-top: 12px; line-height: 1.8; }
.nb-maker-copy { border-left: 2px solid var(--accent); padding-left: 28px; }
.nb-signature { color: var(--ink); font-size: 13px; font-weight: 800; }
.nb-pricing { padding-block: 70px; background: var(--surface); border-block: 1px solid var(--border); }
.nb-pricing-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 28px; margin-bottom: 36px; }
.nb-pricing-head > p { font-size: 14px; color: var(--text-2); }
.nb-pricing-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.nb-plan { display: flex; flex-direction: column; padding: 30px; border: 1px solid var(--border); border-radius: 16px; }
.nb-plan-single { background: var(--accent-soft); border-color: var(--accent-line); }
.nb-plan .eyebrow { font-size: 10px; }
.nb-plan h3 { margin-top: 20px; font-size: 21px; letter-spacing: -.025em; }
.nb-price { margin-block: 16px 5px; display: flex; align-items: baseline; gap: 8px; }
.nb-price strong { font-size: 50px; letter-spacing: -.05em; line-height: 1.2; }
.nb-price span, .nb-plan > p:not(.eyebrow):not(.nb-price) { color: var(--text-2); font-size: 13px; }
.nb-plan ul { margin-block: 24px 28px; font-size: 14px; line-height: 2; }
.nb-plan li::before { content: '↳'; color: var(--accent); margin-right: 8px; }
.nb-plan .btn { margin-top: auto; font-size: 13px; padding-inline: 12px; }
.nb-pricing-note { font-size: 12px; color: var(--text-2); max-width: 840px; margin-top: 24px; }
.nb-faq { gap: 55px; }
.nb-faq details { border-bottom: 1px solid var(--border); }
.nb-faq details:first-child { border-top: 1px solid var(--border); }
.nb-faq summary { font-size: 16px; font-weight: 800; padding: 20px 24px 20px 0; cursor: pointer; position: relative; list-style: none; }
.nb-faq summary::-webkit-details-marker { display: none; }
.nb-faq summary::after { content: '+'; position: absolute; right: 0; top: 20px; color: var(--accent); }
.nb-faq details[open] summary::after { content: '−'; }
.nb-faq details p { color: var(--text-2); font-size: 15px; padding-bottom: 22px; }
.nb-download { text-align: center; padding: 64px 24px; border-radius: 20px; background: var(--accent-soft); border: 1px solid var(--accent-line); margin-bottom: 70px; }
.notebooklm-page .nb-download h2 { font-size: clamp(40px, 5vw, 64px); }
.nb-download > p:not(.eyebrow) { margin-top: 22px; color: var(--text-2); }
.nb-download .nb-actions { justify-content: center; }
.nb-download .nb-download-note { font-size: 12px; }
.nb-affiliation { font-size: 11px; color: var(--text-2); max-width: 350px; margin-top: 12px; }
@media (max-width: 1000px) {
  .nb-hero { gap: 32px; padding-block: 60px; }
  .nb-hero h1 { font-size: 54px; }
  .nb-path-preview { padding-inline: 24px; }
  .nb-preview-top { flex-wrap: wrap; gap: 5px; }
  .nb-explainer, .nb-maker, .nb-faq { gap: 36px; }
  .nb-plan { padding: 22px; }
  .nb-listen { gap: 28px; padding: 30px; }
}
@media (max-width: 760px) {
  .nb-nav-sample { display: none; }
  .nb-hero { grid-template-columns: 1fr; gap: 42px; padding-block: 44px 48px; }
  .nb-hero h1 { font-size: clamp(44px, 8.5vw, 64px); }
  .nb-intro { font-size: 18px; }
  .nb-actions { gap: 18px; }
  .nb-community { margin-bottom: 22px; font-size: 10px; }
  .nb-path-preview { max-width: 500px; width: 100%; justify-self: center; }
  .nb-preview-top { flex-wrap: nowrap; }
  .nb-bridge .container { flex-direction: column; gap: 6px; padding-block: 20px; }
  .nb-section { padding-block: 56px; }
  .nb-explainer, .nb-maker, .nb-faq, .nb-listen { grid-template-columns: 1fr; gap: 28px; }
  .nb-explainer-copy, .nb-maker-copy { font-size: 16px; }
  .nb-listen { padding: 26px 20px; }
  .nb-audio-card { padding: 20px; }
  .nb-pricing { padding-block: 48px; }
  .nb-pricing-head { align-items: flex-start; flex-direction: column; gap: 18px; }
  .nb-pricing-grid { grid-template-columns: 1fr; }
  .nb-plan { padding: 26px; }
  .nb-plan ul { margin-block: 16px 24px; }
  .nb-download { margin-bottom: 40px; padding: 44px 18px; }
}
@media (max-width: 400px) {
  .nb-hero h1 { font-size: 42px; }
  .nb-text-link { font-size: 13px; }
  .nb-preview-top { align-items: flex-start; flex-direction: column; }
  .nb-preview-steps h3 { font-size: 14px; }
  .nb-preview-steps p { font-size: 11px; }
  .nb-wave { width: 22px; }
  .notebooklm-page .nav-links { gap: 4px; }
  .notebooklm-page .nav-link { padding-inline: 6px; }
  .notebooklm-page .logo svg { width: 112px; }
  .notebooklm-page .nav-links .btn { padding-inline: 12px; font-size: 12px; }
}