:root {
  --ink: #f8f2ff;
  --muted: #c8bfe1;
  --night: #17103f;
  --panel: rgba(31, 20, 74, 0.72);
  --line: rgba(244, 232, 255, 0.18);
  --pink: #ff58b9;
  --coral: #ff735f;
  --violet: #7b52e8;
  --cyan: #4fdfed;
}
/* STACK landing layout: the Fission composition with STACK's pink, violet, and cyan palette. */
.landing-page {
  min-width: 320px;
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 14% 0%, rgba(123, 82, 232, 0.28), transparent 34rem),
    radial-gradient(circle at 92% 12%, rgba(255, 88, 185, 0.18), transparent 32rem),
    linear-gradient(#17103f 0%, #100b2b 50%, #07051a 100%);
  color: var(--ink);
  line-height: 1.65;
}

.landing-page::before {
  position: fixed;
  z-index: 0;
  inset: 0;
  background-image:
    linear-gradient(rgba(79, 223, 237, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79, 223, 237, 0.025) 1px, transparent 1px);
  background-size: 36px 36px;
  content: "";
  mask-image: linear-gradient(#000, transparent 88%);
  pointer-events: none;
}

.landing-page *, .landing-page *::before, .landing-page *::after { box-sizing: border-box; }
.landing-page .landing-shell a { color: var(--cyan); text-underline-offset: 4px; }
.landing-page .landing-shell a:hover { color: #fff; }
.landing-shell { position: relative; z-index: 1; width: min(calc(100% - 48px), 1240px); margin: 0 auto; }
.landing-header { display: flex; min-height: 92px; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.landing-brand { display: inline-flex; align-items: center; gap: 13px; color: var(--ink); text-decoration: none; }
.landing-brand img { width: 48px; height: 48px; border: 1px solid rgba(79, 223, 237, 0.65); border-radius: 12px; box-shadow: 0 0 26px rgba(255, 88, 185, 0.2); object-fit: cover; }
.landing-brand span { display: flex; flex-direction: column; letter-spacing: 0.17em; line-height: 1.18; }
.landing-brand strong { color: var(--ink); font-size: 0.92rem; }
.landing-brand small { color: var(--pink); font-size: 0.62rem; }
.landing-nav { display: flex; align-items: center; gap: 24px; }
.landing-nav a { color: var(--muted); font-size: 0.72rem; font-weight: 800; letter-spacing: 0.14em; text-decoration: none; text-transform: uppercase; }
.landing-nav a:hover, .landing-nav a[aria-current="page"] { color: var(--pink); }

.mobile-site-menu { display: none; position: relative; }
.mobile-site-menu summary { display: flex; width: 42px; height: 42px; align-items: center; justify-content: center; border: 1px solid rgba(255, 88, 185, 0.68); background: rgba(31, 20, 74, 0.84); color: var(--pink); cursor: pointer; list-style: none; }
.mobile-site-menu summary::-webkit-details-marker { display: none; }
.mobile-site-menu summary:focus-visible { outline: 2px solid var(--pink); outline-offset: 3px; }
.mobile-menu-icon, .mobile-menu-icon::before, .mobile-menu-icon::after { display: block; width: 18px; height: 2px; background: currentcolor; content: ""; transition: transform 0.18s, opacity 0.18s; }
.mobile-menu-icon { position: relative; }
.mobile-menu-icon::before, .mobile-menu-icon::after { position: absolute; left: 0; }
.mobile-menu-icon::before { top: -6px; }
.mobile-menu-icon::after { top: 6px; }
.mobile-site-menu[open] .mobile-menu-icon { background: transparent; }
.mobile-site-menu[open] .mobile-menu-icon::before { transform: translateY(6px) rotate(45deg); }
.mobile-site-menu[open] .mobile-menu-icon::after { transform: translateY(-6px) rotate(-45deg); }
.mobile-menu-links { display: grid; position: absolute; z-index: 10; top: calc(100% + 10px); right: 0; min-width: 166px; gap: 4px; margin: 0; padding: 8px; border: 1px solid rgba(255, 88, 185, 0.68); background: rgba(23, 16, 63, 0.96); box-shadow: 0 18px 40px rgba(0, 0, 0, 0.5), 0 0 24px rgba(255, 88, 185, 0.12); }
.mobile-menu-links a { display: block; padding: 12px 14px; color: var(--muted); font-size: 0.66rem; font-weight: 800; letter-spacing: 0.12em; text-decoration: none; text-transform: uppercase; }
.mobile-menu-links a:hover, .mobile-menu-links a[aria-current="page"] { background: rgba(255, 88, 185, 0.08); color: var(--pink); }

.landing-hero { display: grid; min-height: 630px; grid-template-columns: minmax(0, 0.87fr) minmax(420px, 1.13fr); gap: clamp(36px, 6vw, 88px); align-items: center; padding: 82px 0 76px; }
.landing-hero-copy { position: relative; z-index: 2; }
.landing-kicker { margin: 0 0 18px; color: var(--coral); font-size: 0.72rem; font-weight: 800; letter-spacing: 0.25em; }
.landing-hero h1 { max-width: 650px; margin: 0 0 24px; color: var(--ink); font-size: clamp(3.7rem, 7.5vw, 7.4rem); font-weight: 800; letter-spacing: -0.075em; line-height: 0.89; text-shadow: 0 0 42px rgba(255, 88, 185, 0.15); }
.landing-hero h1 span { display: block; color: var(--pink); }
.landing-hero-lede { max-width: 540px; margin: 0 0 32px; color: var(--muted); font-size: clamp(1.05rem, 1.8vw, 1.2rem); }
.landing-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.landing-button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 0 20px; border: 1px solid var(--cyan); background: rgba(79, 223, 237, 0.1); color: var(--ink) !important; font-size: 0.74rem; font-weight: 800; letter-spacing: 0.1em; text-decoration: none; text-transform: uppercase; transition: transform 0.18s ease, background 0.18s ease; }
.landing-button:hover { background: var(--cyan); color: #17103f !important; transform: translateY(-2px); }
.landing-button.secondary { border-color: var(--line); background: rgba(31, 20, 74, 0.4); color: var(--muted) !important; }
.landing-button.secondary:hover { border-color: rgba(79, 223, 237, 0.65); background: rgba(79, 223, 237, 0.08); color: var(--cyan) !important; }
.landing-note { display: flex; align-items: center; gap: 9px; margin-top: 24px; color: #9c8ec3; font-size: 0.7rem; letter-spacing: 0.08em; }
.landing-note i { display: block; width: 6px; height: 6px; border-radius: 50%; background: var(--pink); box-shadow: 0 0 12px var(--pink); }

.landing-hero-art { position: relative; margin: 0; padding: 10px; border: 1px solid rgba(79, 223, 237, 0.65); background: rgba(7, 5, 26, 0.72); box-shadow: 0 0 70px rgba(255, 88, 185, 0.12); }
.landing-hero-art::before { position: absolute; z-index: -1; inset: 24px -22px -24px 22px; border: 1px solid rgba(255, 88, 185, 0.3); content: ""; }
.landing-hero-art img { display: block; width: 100%; aspect-ratio: 1.9; object-fit: cover; object-position: center; }
.landing-hero-art figcaption { display: flex; justify-content: space-between; gap: 12px; padding: 14px 10px 5px; color: #9c8ec3; font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; }
.landing-hero-art figcaption strong { color: var(--cyan); font-weight: 800; }

.landing-signal-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; padding: 0 0 88px; }
.landing-signal-card { padding: 20px 22px; border: 1px solid var(--line); background: linear-gradient(135deg, rgba(255, 88, 185, 0.07), transparent 62%), rgba(31, 20, 74, 0.78); }
.landing-signal-card small { display: block; margin-bottom: 8px; color: #9c8ec3; font-size: 0.62rem; font-weight: 800; letter-spacing: 0.17em; text-transform: uppercase; }
.landing-signal-card strong { display: block; color: var(--ink); font-size: 0.98rem; letter-spacing: 0.04em; }
.landing-signal-card:nth-child(2) strong { color: var(--cyan); }
.landing-signal-card:nth-child(3) strong { color: var(--pink); }

.landing-screenshot-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 16px; }
.landing-screenshot { grid-column: span 2; margin: 0; padding: 8px; border: 1px solid var(--line); background: linear-gradient(145deg, rgba(255, 88, 185, 0.08), transparent 55%), rgba(31, 20, 74, 0.72); box-shadow: 0 18px 48px rgba(0, 0, 0, 0.24); }
.landing-screenshot:nth-child(4) { grid-column: 2 / span 2; }
.landing-screenshot:nth-child(5) { grid-column: 4 / span 2; }
.landing-screenshot img { display: block; width: 100%; aspect-ratio: 1284 / 2778; object-fit: cover; object-position: center; }
.landing-screenshot figcaption { display: grid; gap: 4px; padding: 15px 8px 7px; }
.landing-screenshot figcaption strong { color: var(--ink); font-size: 0.84rem; letter-spacing: 0.02em; }
.landing-screenshot figcaption span { color: #9c8ec3; font-size: 0.64rem; letter-spacing: 0.1em; text-transform: uppercase; }
.landing-screenshot:nth-child(2) { border-top-color: var(--pink); }
.landing-screenshot:nth-child(3) { border-top-color: var(--coral); }
.landing-screenshot:nth-child(4) { border-top-color: var(--cyan); }
.landing-screenshot:nth-child(5) { border-top-color: var(--violet); }

.landing-section { padding: 92px 0; border-top: 1px solid var(--line); }
.landing-section-heading { display: grid; grid-template-columns: minmax(220px, 0.62fr) minmax(0, 1fr); gap: 56px; align-items: end; margin-bottom: 48px; }
.landing-section-heading p { margin: 0 0 12px; color: var(--coral); font-size: 0.68rem; font-weight: 800; letter-spacing: 0.2em; text-transform: uppercase; }
.landing-section-heading h2 { max-width: 440px; margin: 0; color: var(--ink); font-size: clamp(2rem, 4vw, 3.4rem); letter-spacing: -0.055em; line-height: 0.98; }
.landing-section-heading .landing-section-intro { max-width: 520px; margin: 0; color: var(--muted); font-size: 1.02rem; }
.landing-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.landing-step { min-height: 232px; padding: 24px; border: 1px solid var(--line); background: rgba(31, 20, 74, 0.58); }
.landing-step-number { color: var(--violet); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.74rem; font-weight: 800; letter-spacing: 0.16em; }
.landing-step h3 { margin: 58px 0 9px; color: var(--ink); font-size: 1.25rem; letter-spacing: 0.03em; }
.landing-step p { margin: 0; color: var(--muted); font-size: 0.92rem; }
.landing-step:nth-child(1) { border-top: 2px solid var(--cyan); }
.landing-step:nth-child(2) { border-top: 2px solid var(--pink); }
.landing-step:nth-child(3) { border-top: 2px solid var(--coral); }

.landing-feature { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 60px; align-items: center; }
.landing-feature-copy h2 { max-width: 520px; margin: 0 0 18px; color: var(--ink); font-size: clamp(2.2rem, 4vw, 3.8rem); letter-spacing: -0.06em; line-height: 0.96; }
.landing-feature-copy > p { max-width: 570px; margin: 0 0 24px; color: var(--muted); font-size: 1.02rem; }
.landing-feature-list { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.landing-feature-list li { display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border: 1px solid var(--line); background: rgba(23, 16, 63, 0.6); color: var(--muted); }
.landing-feature-list li::before { flex: 0 0 auto; width: 7px; height: 7px; margin-top: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); content: ""; }
.landing-feature-panel { position: relative; padding: 30px; border: 1px solid rgba(255, 88, 185, 0.45); background: linear-gradient(145deg, rgba(255, 88, 185, 0.1), rgba(79, 223, 237, 0.05)), rgba(31, 20, 74, 0.78); }
.landing-feature-panel::after { position: absolute; right: 24px; bottom: 24px; width: 100px; height: 100px; border: 1px solid rgba(79, 223, 237, 0.3); border-radius: 50%; box-shadow: 0 0 30px rgba(79, 223, 237, 0.1) inset; content: ""; }
.landing-feature-panel small { display: block; margin-bottom: 30px; color: var(--pink); font-size: 0.64rem; font-weight: 800; letter-spacing: 0.2em; text-transform: uppercase; }
.landing-feature-panel strong { display: block; max-width: 280px; margin-bottom: 22px; color: var(--ink); font-size: clamp(1.65rem, 3vw, 2.55rem); letter-spacing: -0.045em; line-height: 1.02; }
.landing-route-line { display: flex; align-items: center; gap: 10px; color: var(--cyan); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.72rem; letter-spacing: 0.1em; }
.landing-route-line i { display: block; width: 44px; height: 1px; background: linear-gradient(90deg, var(--cyan), transparent); }

.landing-cta { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 30px; align-items: center; padding: 48px 0 92px; border-top: 1px solid var(--line); }
.landing-cta h2 { max-width: 600px; margin: 0; color: var(--ink); font-size: clamp(2rem, 4vw, 3.4rem); letter-spacing: -0.06em; line-height: 0.98; }
.landing-cta p { max-width: 470px; margin: 12px 0 0; color: var(--muted); }
.landing-cta .landing-button { white-space: nowrap; }
.landing-footer { display: flex; min-height: 88px; align-items: center; justify-content: space-between; gap: 22px; border-top: 1px solid var(--line); color: #9c8ec3; font-size: 0.72rem; }
.landing-footer-links { display: flex; gap: 18px; }
.landing-footer a { color: var(--muted); text-decoration: none; }
.landing-footer a:hover { color: var(--pink); }

/* Bring the legal pages into the same STACK palette as the landing page. */
.policy-site { background: radial-gradient(circle at 18% 0%, rgba(123, 82, 232, 0.28), transparent 34rem), radial-gradient(circle at 95% 9%, rgba(255, 88, 185, 0.16), transparent 32rem), linear-gradient(#17103f 0%, #100b2b 48%, #07051a 100%); color: var(--ink); }
.policy-site::before { background-image: linear-gradient(rgba(79, 223, 237, 0.025) 1px, transparent 1px), linear-gradient(90deg, rgba(79, 223, 237, 0.025) 1px, transparent 1px); }
.policy-site .site-header, .policy-site footer { border-color: var(--line); }
.policy-site .brand > img { border-color: rgba(79, 223, 237, 0.65); box-shadow: 0 0 22px rgba(255, 88, 185, 0.2); }
.policy-site .brand > span:last-child small, .policy-site .back-link, .policy-site footer a { color: var(--cyan); }
.policy-site .hero { border-color: var(--line); }
.policy-site .hero::after { border-color: rgba(123, 82, 232, 0.34); box-shadow: inset 0 0 40px rgba(255, 88, 185, 0.08), 0 0 60px rgba(79, 223, 237, 0.05); }
.policy-site .eyebrow, .policy-site .contents p { color: var(--coral); }
.policy-site h1 { text-shadow: 0 0 38px rgba(255, 88, 185, 0.16); }
.policy-site .lede { color: var(--muted); }
.policy-site .policy-meta span, .policy-site .contents, .policy-site .summary-grid div, .policy-site .provider-list a, .policy-site .support-card, .policy-site .steps li { border-color: var(--line); background-color: rgba(31, 20, 74, 0.78); }
.policy-site .content-grid, .policy-site .policy section + section { border-color: var(--line); }
.policy-site .contents a { color: var(--muted); }
.policy-site .contents a::before, .policy-site .section-number { color: var(--pink); }
.policy-site .contents a:hover { color: var(--cyan); }
.policy-site .policy p, .policy-site .policy li, .policy-site .provider-list small { color: var(--muted); }
.policy-site .policy li::marker { color: var(--cyan); }
.policy-site .provider-list a:hover { border-color: rgba(79, 223, 237, 0.65); background: rgba(23, 16, 63, 0.96); }
.policy-site .contact-card { border-color: rgba(79, 223, 237, 0.65) !important; background: linear-gradient(135deg, rgba(255, 88, 185, 0.1), rgba(79, 223, 237, 0.05)), rgba(31, 20, 74, 0.96); }
.policy-site .contact-link { border-color: var(--cyan); background: rgba(79, 223, 237, 0.08); color: var(--ink); }
.policy-site .contact-link:hover { background: var(--cyan); color: #17103f; }

@media (max-width: 900px) {
  .landing-hero { grid-template-columns: 1fr; padding-top: 62px; }
  .landing-hero-copy { max-width: 720px; }
  .landing-hero-art { max-width: 760px; }
  .landing-section-heading, .landing-feature { grid-template-columns: 1fr; gap: 22px; }
  .landing-screenshot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .landing-screenshot, .landing-screenshot:nth-child(4), .landing-screenshot:nth-child(5) { grid-column: auto; }
}

@media (max-width: 640px) {
  .landing-shell { width: min(calc(100% - 28px), 560px); }
  .landing-header { min-height: 76px; align-items: flex-start; padding: 16px 0; }
  .landing-nav, .policy-site .header-links { display: none; }
  .mobile-site-menu { display: block; }
  .policy-site .site-header { min-height: 76px; align-items: flex-start; padding: 16px 0; }
  .landing-brand img { width: 40px; height: 40px; }
  .landing-brand strong { font-size: 0.78rem; }
  .landing-brand small { font-size: 0.52rem; }
  .landing-hero { min-height: 0; gap: 42px; padding: 58px 0 56px; }
  .landing-hero h1 { font-size: clamp(3.3rem, 16vw, 5.2rem); }
  .landing-hero-art { padding: 6px; }
  .landing-hero-art figcaption { flex-direction: column; gap: 4px; font-size: 0.6rem; }
  .landing-signal-strip, .landing-steps, .landing-screenshot-grid { grid-template-columns: 1fr; }
  .landing-screenshot, .landing-screenshot:nth-child(4), .landing-screenshot:nth-child(5) { grid-column: auto; }
  .landing-signal-strip { padding-bottom: 62px; }
  .landing-section { padding: 64px 0; }
  .landing-section-heading { margin-bottom: 30px; }
  .landing-step { min-height: 0; }
  .landing-step h3 { margin-top: 32px; }
  .landing-feature-panel { padding: 24px; }
  .landing-cta { grid-template-columns: 1fr; padding-bottom: 64px; }
  .landing-footer { align-items: flex-start; flex-direction: column; justify-content: center; padding: 22px 0; }
}

@media (prefers-reduced-motion: reduce) {
  .landing-button { transition: none; }
}