/* FutureStack: revenue tool, supporting offer and persistent review access. */
:root {
  --bg: #040710;
  --surface: #0b1221;
  --text: #f0f4ff;
  --muted: #a5b3cb;
  --subtle: #899bb6;
  --line: rgba(190, 208, 239, 0.16);
  --green: #75bfa3;
  --emerald: #287d63;
  --green-hover: #26745d;
  --gold: #f5c96e;
  --blue: #3b6395;
  --blue-hover: #426b9e;
  --blue-border: #6590bc;
  --blue-link: #a2bbdc;
  --sans: 'DM Sans', system-ui, sans-serif;
  --serif: 'DM Serif Display', Georgia, serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 132px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.65 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
h1, h2, h3, p { margin: 0; }
svg { display: block; }
a, button, summary { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--gold); outline-offset: 5px; }
.container { width: min(1120px, calc(100% - 48px)); margin-inline: auto; }
.skip-link { position: fixed; top: 8px; left: 16px; z-index: 200; padding: 12px 18px; background: var(--text); color: var(--bg); transform: translateY(-160%); border-radius: 6px; }
.skip-link:focus { transform: translateY(0); }
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(4, 7, 16, 0.97); border-bottom: 1px solid var(--line); }
.announcement { min-height: 50px; padding: 8px 18px; display: flex; align-items: center; justify-content: center; gap: 16px; background: var(--gold); color: #191308; font-size: 0.86rem; font-weight: 600; line-height: 1.4; }
.announcement > span:first-child { font-size: 0.67rem; font-weight: 700; letter-spacing: 0.08em; }
.announcement strong { font-size: 1.35rem; font-weight: 800; line-height: 1.2; white-space: nowrap; }
.announcement-action { font-size: 0.76rem; white-space: nowrap; }
.announcement:hover { background: #ffda8d; }
.nav-content { display: flex; align-items: center; gap: 24px; min-height: 76px; }
.brand { display: inline-flex; align-items: center; flex-shrink: 0; gap: 10px; font: 700 0.95rem/1.2 ui-monospace, Menlo, Consolas, monospace; letter-spacing: 0.03em; }
.brand-mark { width: 28px; height: 28px; }
.nav-links { display: flex; align-items: center; gap: 18px; margin-left: auto; }
.nav-links a { color: var(--muted); font-size: 0.84rem; padding: 8px 0; white-space: nowrap; }
.nav-links a:hover { color: var(--text); }
.header-review-link { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 11px 14px; min-height: 42px; flex-shrink: 0; border: 1px solid var(--blue-border); border-radius: 7px; color: #fff; background: var(--blue); font-size: 0.78rem; font-weight: 700; line-height: 1.25; white-space: nowrap; }
.header-review-link:hover { background: var(--blue-hover); }
.review-mobile { display: none; }
.mobile-toggle { display: none; flex-direction: column; align-items: center; justify-content: center; gap: 5px; width: 40px; height: 42px; padding: 8px; flex-shrink: 0; border: 1px solid var(--line); border-radius: 6px; color: var(--text); background: transparent; cursor: pointer; }
.mobile-toggle span { width: 20px; height: 1px; background: currentColor; }
.hero { padding: 64px 0 70px; background: radial-gradient(ellipse at 75% 35%, rgba(245, 201, 110, 0.06), transparent 60%); }
.hero-layout { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr); align-items: center; gap: 72px; }
.hero-copy { min-width: 0; }
.eyebrow { color: var(--gold); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.13em; text-transform: uppercase; margin-bottom: 16px; }
h1 { font: 400 clamp(3rem, 5.8vw, 5.2rem)/1.07 var(--serif); letter-spacing: -0.025em; }
h1 em { color: var(--gold); font-weight: 400; }
.hero-description { color: var(--muted); font-size: 1.04rem; max-width: 490px; margin-top: 24px; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 20px; margin-top: 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 24px; min-height: 54px; padding: 14px 24px; border-radius: 7px; font-size: 0.93rem; font-weight: 700; line-height: 1.4; }
.button--offer { background: var(--gold); color: #171207; }
.button--offer:hover { background: #ffda8d; }
.button--tool { background: var(--emerald); color: #fff; }
.button--tool:hover { background: var(--green-hover); }
.text-link { font-size: 0.84rem; color: var(--text); padding: 8px 0; }
.text-link:hover { color: var(--gold); }
.hero-terms { color: var(--muted); font-size: 0.76rem; line-height: 1.6; margin-top: 18px; max-width: 440px; }
.affiliate-note { color: var(--subtle); font-size: 0.7rem; margin-top: 8px; }
.affiliate-note a { text-decoration: underline; text-underline-offset: 3px; }
.offer-card { min-width: 0; padding: 28px 30px 0; border: 1px solid rgba(245, 201, 110, 0.32); border-radius: 20px; background: radial-gradient(ellipse at 90% 0, rgba(245, 201, 110, 0.13), transparent 65%), linear-gradient(145deg, #141a27, #0a0f1b); }
.offer-card-top { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.offer-card-top h2 { font: 700 1.25rem/1.3 var(--sans); letter-spacing: -0.02em; }
.offer-badge { padding: 6px 9px; border: 1px solid rgba(245, 201, 110, 0.25); border-radius: 4px; color: var(--gold); font-size: 0.53rem; letter-spacing: 0.12em; white-space: nowrap; }
.offer-value { font: 600 clamp(7rem, 11.5vw, 10rem)/1 var(--sans); letter-spacing: -0.09em; color: var(--gold); margin: 32px 0 20px; }
.offer-value > span:first-child { font-size: 0.58em; letter-spacing: -0.06em; }
.offer-off { display: inline-block; margin-left: 12px; font-size: 0.14em; letter-spacing: 0.04em; font-weight: 500; }
.offer-caption { font: 400 1.5rem/1.4 var(--serif); margin-bottom: 30px; }
.offer-card-bottom { display: flex; justify-content: space-between; gap: 16px; border-top: 1px solid var(--line); padding: 19px 0; font-size: 0.66rem; color: var(--muted); }
.offer-card-bottom a { color: var(--gold); white-space: nowrap; }
.revenue-home .hero { padding: 54px 0 58px; background: radial-gradient(ellipse at 70% 30%, rgba(40, 125, 99, 0.04), transparent 65%); }
.revenue-home .hero-layout { gap: 56px; }
.revenue-home .hero h1 { font-size: clamp(2.3rem, 4vw, 3.55rem); line-height: 1.13; }
.revenue-home .hero h1 em, .revenue-home .hero .eyebrow { color: var(--green); }
.hero-support { display: flex; flex-direction: column; gap: 16px; min-width: 0; }
.report-preview { padding: 26px; background: linear-gradient(145deg, #101b2d, #0a101c); border: 1px solid var(--line); border-radius: 14px; }
.report-preview h2 { font: 600 1.05rem/1.4 var(--sans); }
.check-outputs { padding: 0; margin: 18px 0 0; list-style: none; }
.check-outputs li { display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 12px; padding: 18px 0; }
.check-outputs li + li { border-top: 1px solid var(--line); }
.output-kind { padding-top: 3px; color: var(--green); font-size: 0.61rem; letter-spacing: 0.02em; }
.output-kind--estimate { color: var(--gold); }
.check-outputs h3 { font-size: 0.87rem; font-weight: 600; line-height: 1.4; }
.check-outputs p { color: var(--muted); font-size: 0.76rem; line-height: 1.6; margin-top: 6px; }
.report-preview-note { padding-top: 16px; border-top: 1px solid var(--line); color: var(--subtle); font-size: 0.7rem; }
.campaign-card { display: block; padding: 24px; border: 1px solid rgba(245, 201, 110, 0.65); border-radius: 14px; background: radial-gradient(ellipse at 90% 0, rgba(245, 201, 110, 0.18), transparent 75%), #111722; box-shadow: 0 12px 36px rgba(245, 201, 110, 0.06); }
.campaign-card:hover { border-color: var(--gold); }
.campaign-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.campaign-label { color: var(--gold); font-size: 0.65rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.campaign-provider { color: var(--text); font-size: 0.9rem; font-weight: 600; }
.campaign-main { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 16px; }
.campaign-discount { display: inline-flex; align-items: baseline; gap: 5px; color: var(--gold); font: 700 5rem/1 var(--sans); letter-spacing: -0.06em; white-space: nowrap; }
.campaign-percent { font-size: 0.66em; letter-spacing: -0.03em; }
.campaign-off { font-size: 0.23em; letter-spacing: 0; }
.campaign-link { flex-shrink: 0; padding: 10px 14px; background: var(--gold); border-radius: 6px; color: #191308; font-size: 0.76rem; font-weight: 700; }
.campaign-note { color: var(--muted); font-size: 0.71rem; margin-top: 12px; }
.section { padding: 64px 0; border-top: 1px solid var(--line); }
.section h2 { font: 400 clamp(1.9rem, 3vw, 2.7rem)/1.18 var(--serif); letter-spacing: -0.02em; }
.section-intro { max-width: 650px; margin-bottom: 30px; }
.section-intro > p:last-child:not(.eyebrow) { color: var(--muted); margin-top: 16px; font-size: 0.92rem; max-width: 580px; }
.benefit-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 36px; }
.item-number { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; background: rgba(117, 191, 163, 0.08); color: var(--green); border-radius: 7px; font-size: 0.68rem; margin-bottom: 16px; }
.benefit h3 { font-size: 1rem; font-weight: 600; line-height: 1.4; margin-bottom: 10px; }
.benefit p { color: var(--muted); font-size: 0.84rem; line-height: 1.7; }
.tool-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.tool-card { display: flex; flex-direction: column; align-items: flex-start; padding: 28px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; transition: border-color 160ms ease; }
.tool-card:hover { border-color: rgba(117, 191, 163, 0.6); }
.tool-card--review:hover { border-color: var(--blue-border); }
.tool-label { color: var(--subtle); font-size: 0.67rem; margin-bottom: 10px; }
.tool-card h3 { font-size: 1.18rem; font-weight: 600; line-height: 1.4; margin-bottom: 10px; }
.tool-card p { color: var(--muted); font-size: 0.87rem; line-height: 1.65; margin-bottom: 24px; max-width: 410px; }
.card-link { margin-top: auto; color: var(--green); font-size: 0.82rem; font-weight: 600; }
.tool-card--review .card-link { color: var(--blue-link); }
.tools-alternative { margin-top: 22px; color: var(--subtle); font-size: 0.76rem; }
.tools-alternative a { color: var(--muted); text-decoration: underline; text-underline-offset: 3px; }
.evidence { background: #080d17; }
.evidence-layout { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr); gap: 100px; align-items: center; }
.evidence-layout p:not(.eyebrow) { color: var(--muted); font-size: 0.86rem; margin-top: 18px; max-width: 570px; }
.evidence-links { display: flex; flex-direction: column; }
.evidence-links a { display: flex; justify-content: space-between; padding: 14px 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 0.87rem; }
.evidence-links a:hover { color: var(--gold); }
.faq-layout { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: 72px; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list details:first-child { border-top: 1px solid var(--line); }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 20px 0; cursor: pointer; font-size: 0.88rem; font-weight: 500; list-style: none; line-height: 1.5; }
.faq-list summary::marker { content: ''; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: '+'; color: var(--gold); flex-shrink: 0; font-size: 1.1rem; }
.faq-list details[open] summary::after { content: '−'; }
.faq-list details p { color: var(--muted); font-size: 0.83rem; line-height: 1.75; padding-bottom: 22px; }
.faq-list details a { color: var(--gold); text-decoration: underline; text-underline-offset: 3px; }
.site-footer { border-top: 1px solid var(--line); padding: 34px 0; }
.footer-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; }
.footer-top p { color: var(--subtle); font-size: 0.76rem; margin-top: 10px; }
.contact-link { font-size: 0.76rem; color: var(--muted); }
.footer-links { display: flex; flex-wrap: wrap; gap: 10px 24px; margin: 24px 0 18px; color: var(--muted); font-size: 0.75rem; }
.footer-links a:hover, .contact-link:hover { color: var(--text); }
.footer-disclosure { color: var(--subtle); max-width: 880px; font-size: 0.7rem; line-height: 1.7; }
.offer-hero { max-width: 760px; margin-inline: auto; padding: 54px 0 64px; text-align: center; }
.offer-hero h1 { font-size: clamp(2.8rem, 5.8vw, 4.5rem); }
.offer-hero .hero-description { margin-inline: auto; }
.offer-summary { margin: 30px auto 0; padding: 26px; max-width: 560px; background: var(--surface); border: 1px solid rgba(245, 201, 110, 0.32); border-radius: 14px; }
.offer-summary .button { width: 100%; }
.offer-summary p { color: var(--muted); font-size: 0.82rem; margin-top: 16px; }
.offer-page .section-intro { max-width: none; }
.offer-page .benefit-grid { gap: 28px; }
.offer-page .nav-content { justify-content: space-between; }
.offer-page .header-review-link { margin-left: auto; }
.offer-page .faq-layout { grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); }

@media (max-width: 1080px) {
  .nav-content { gap: 18px; }
  .nav-links { gap: 12px; }
  .nav-links a { font-size: 0.78rem; }
  .hero-layout { gap: 40px; }
  .revenue-home .hero-layout { gap: 32px; }
  .campaign-discount { font-size: 4rem; }
  .campaign-main { gap: 12px; }
  .campaign-link { padding: 10px 12px; font-size: 0.7rem; }
  .offer-card { padding: 24px 24px 0; }
  .offer-value { font-size: clamp(6rem, 11.5vw, 9rem); }
  .offer-off { margin-left: 8px; }
}
@media (max-width: 960px) {
  .nav-links { display: none; }
  .header-review-link { margin-left: auto; }
  .mobile-toggle { display: flex; }
  .nav-links.open { display: flex; flex-direction: column; align-items: stretch; gap: 2px; position: absolute; left: 0; right: 0; top: 100%; margin: 0; padding: 18px 24px; background: #080d17; border-bottom: 1px solid var(--line); box-shadow: 0 20px 30px rgba(0, 0, 0, 0.2); }
  .nav-links.open a { padding: 13px 0; font-size: 0.9rem; }
  .evidence-layout { gap: 48px; }
  .faq-layout { gap: 40px; }
  .offer-card-top { flex-wrap: wrap; gap: 10px; }
}
@media (max-width: 760px) {
  .hero { padding: 38px 0 42px; }
  .revenue-home .hero { padding: 38px 0 42px; }
  .revenue-home .hero h1 { font-size: clamp(2.2rem, 6.8vw, 3rem); }
  .hero-layout { grid-template-columns: 1fr; gap: 32px; }
  h1 { font-size: clamp(2.7rem, 8.8vw, 4rem); }
  .hero-description { max-width: 570px; }
  .offer-card { max-width: 570px; width: 100%; }
  .offer-value { font-size: 8rem; margin: 22px 0 14px; }
  .offer-caption { font-size: 1.35rem; margin-bottom: 24px; }
  .section { padding: 44px 0; }
  .benefit-grid { grid-template-columns: 1fr; gap: 24px; }
  .benefit { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 0 16px; }
  .benefit .item-number { grid-row: 1 / 3; margin: 2px 0 0; }
  .benefit p { grid-column: 2; }
  .tool-grid { grid-template-columns: 1fr; gap: 16px; }
  .evidence-layout, .faq-layout, .offer-page .faq-layout { grid-template-columns: 1fr; gap: 26px; }
  .section-intro { margin-bottom: 26px; }
  .footer-top { flex-direction: column; gap: 16px; }
  .offer-hero { padding: 38px 0 44px; }
}
@media (max-width: 420px) {
  .container { width: calc(100% - 32px); }
  .announcement { min-height: 48px; padding: 10px 12px; font-size: 0.7rem; gap: 8px; }
  .announcement > span:first-child { font-size: 0.55rem; }
  .announcement strong { font-size: 1.15rem; }
  .announcement-action-label { display: none; }
  .nav-content { min-height: 64px; gap: 8px; }
  .brand { font-size: 0.79rem; gap: 7px; letter-spacing: 0.01em; }
  .brand-mark { width: 25px; height: 25px; }
  .header-review-link { min-height: 38px; padding: 9px 10px; font-size: 0.68rem; gap: 5px; }
  .review-desktop { display: none; }
  .review-mobile { display: inline; }
  .mobile-toggle { width: 36px; height: 38px; }
  .hero { padding-top: 30px; }
  .revenue-home .hero { padding-top: 30px; }
  .revenue-home .hero h1 { font-size: clamp(2.05rem, 8.8vw, 2.4rem); }
  .report-preview { padding: 22px; }
  .campaign-card { padding: 16px 18px; }
  .campaign-main { margin-top: 12px; gap: 10px; }
  .campaign-discount { font-size: 3.6rem; }
  .campaign-provider { font-size: 0.83rem; }
  .campaign-label { font-size: 0.58rem; }
  .campaign-link { padding: 10px 12px; font-size: 0.7rem; }
  .campaign-note { margin-top: 10px; font-size: 0.68rem; }
  .eyebrow { font-size: 0.62rem; margin-bottom: 14px; }
  .hero-description { font-size: 0.94rem; margin-top: 20px; }
  .hero-actions { gap: 10px 18px; margin-top: 24px; }
  .hero-actions .button { width: 100%; }
  .hero-actions .text-link { font-size: 0.8rem; }
  .hero-terms { font-size: 0.71rem; margin-top: 10px; }
  .offer-card { padding: 22px 22px 0; }
  .offer-value { font-size: 7.3rem; }
  .offer-card-bottom { font-size: 0.6rem; gap: 10px; }
  .tool-card { padding: 24px; }
  .contact-link { font-size: 0.7rem; overflow-wrap: anywhere; }
  .offer-summary { padding: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}