:root {
  --ink: #071b3a;
  --blue: #0b4a92;
  --bright: #176dd1;
  --pale: #edf5ff;
  --cream: #f8f4ed;
  --line: #cfdced;
  --white: #fff;
  --serif: Georgia, "Times New Roman", serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: #fff; font-family: var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
img { display: block; max-width: 100%; }
button, input { font: inherit; }
.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; }
.skip-link { position: fixed; z-index: 100; left: 1rem; top: 1rem; padding: .75rem 1rem; background: #fff; transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }
.section-shell { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }

.site-header { height: 82px; width: min(1240px, calc(100% - 40px)); margin: auto; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid #e5ebf3; }
.brand { display: inline-flex; gap: 11px; align-items: center; text-decoration: none; font-family: var(--serif); font-size: 1.55rem; font-weight: 700; letter-spacing: -.03em; }
.brand img { border-radius: 50%; }
.primary-nav { display: flex; align-items: center; gap: 2rem; font-size: .87rem; font-weight: 650; }
.primary-nav a { text-decoration: none; position: relative; }
.primary-nav a:not(.nav-download)::after { content: ""; position: absolute; inset: auto 0 -7px; height: 1px; background: var(--blue); transform: scaleX(0); transition: transform .2s; }
.primary-nav a:hover::after { transform: scaleX(1); }
.nav-download { color: #fff; background: var(--ink); padding: .7rem 1.05rem; border-radius: 3px; }
.nav-toggle { display: none; background: none; border: 0; padding: .6rem; }

.hero { min-height: 690px; padding: 100px 0 84px; display: grid; grid-template-columns: .95fr 1.05fr; align-items: center; gap: 60px; overflow: hidden; }
.eyebrow { margin: 0 0 1.3rem; display: flex; align-items: center; gap: .65rem; color: var(--blue); text-transform: uppercase; letter-spacing: .16em; font-size: .68rem; font-weight: 800; }
.eyebrow > span { width: 27px; height: 1px; background: currentColor; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 1.55rem; font-family: var(--serif); font-size: clamp(4.5rem, 7.2vw, 7rem); line-height: .83; letter-spacing: -.065em; font-weight: 500; }
h1 em, h2 em { color: var(--blue); font-weight: 500; }
.hero-lede { max-width: 570px; color: #53657c; font-size: 1.08rem; line-height: 1.78; }
.hero-actions { margin-top: 2.2rem; display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap; }
.button { min-height: 52px; padding: 0 1.25rem; border-radius: 3px; display: inline-flex; align-items: center; justify-content: center; gap: .7rem; text-decoration: none; font-weight: 760; font-size: .88rem; transition: transform .2s, box-shadow .2s, background .2s; }
.button:hover { transform: translateY(-2px); }
.button:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible + span { outline: 3px solid #76aeff; outline-offset: 3px; }
.button svg { width: 19px; fill: currentColor; }
.button-primary { color: #fff; background: var(--blue); box-shadow: 0 12px 30px rgba(11,74,146,.2); }
.button-primary:hover { background: #083d78; box-shadow: 0 15px 34px rgba(11,74,146,.3); }
.meta { color: #758398; font-size: .73rem; }

.hero-art { min-height: 460px; position: relative; display: grid; place-items: center; isolation: isolate; }
.halo { position: absolute; width: 480px; height: 480px; background: radial-gradient(circle, #d7e9ff 0 35%, #edf5ff 36% 58%, transparent 59%); border-radius: 50%; z-index: -3; }
.hero-icon { position: absolute; width: 158px; top: 2px; left: 50%; translate: -50% 0; z-index: 3; filter: drop-shadow(0 18px 20px rgba(7,27,58,.2)); border-radius: 50%; }
.browser-frame { position: absolute; width: min(560px, 100%); height: 340px; top: 122px; background: #fff; border: 1px solid #9ebbdc; border-radius: 13px; overflow: hidden; transform: perspective(800px) rotateY(-4deg) rotateX(2deg); box-shadow: 0 35px 70px rgba(12,46,85,.22); z-index: 2; }
.browser-chrome { height: 48px; padding: 0 13px; background: #f0f5fa; border-bottom: 1px solid #d4e0ed; display: flex; align-items: center; gap: 6px; }
.browser-chrome > span { width: 8px; height: 8px; background: #a9b9c9; border-radius: 50%; }
.address { margin-left: 10px; flex: 1; height: 25px; padding: 6px 12px; background: #fff; border-radius: 4px; color: #9aa7b7; font-size: 9px; }
.browser-content { padding: 43px 62px; }
.mini-brand { display: flex; align-items: center; gap: 6px; font-family: var(--serif); font-size: 14px; }
.mini-brand img { width: 25px; border-radius: 50%; }
.search-line { margin-top: 22px; padding: 13px 17px; border: 1px solid #b7cce3; border-radius: 22px; color: #718297; font-size: 10px; }
.result-lines { margin-top: 26px; display: grid; gap: 10px; }
.result-lines i { display: block; height: 7px; background: #e6eef7; width: 83%; }
.result-lines i:nth-child(2) { width: 67%; }
.result-lines i:nth-child(3) { width: 75%; }
.impact-chip { margin-top: 22px; width: max-content; padding: 7px 10px; background: var(--pale); color: var(--blue); font-size: 9px; font-weight: 750; }
.orbit { position: absolute; border: 1px solid rgba(11,74,146,.18); border-radius: 50%; z-index: -2; }
.orbit-one { width: 550px; height: 230px; transform: rotate(21deg); }
.orbit-two { width: 520px; height: 310px; transform: rotate(-25deg); }

.mission { background: var(--ink); color: #fff; padding: 110px 0 105px; }
.eyebrow-light { color: #8bb9ed; }
.mission-heading { display: grid; grid-template-columns: 1.3fr .7fr; align-items: end; gap: 50px; }
.mission-heading .eyebrow { grid-column: 1 / -1; }
h2 { font-family: var(--serif); font-size: clamp(2.8rem, 5vw, 5rem); line-height: .98; letter-spacing: -.045em; font-weight: 500; }
.mission-heading h2 { margin-bottom: 0; }
.mission-heading h2 em { color: #8dbcf2; }
.mission-heading > p:last-child { margin-bottom: 7px; color: #aebbd0; line-height: 1.8; }
.principles { margin-top: 88px; display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid #36506f; }
.principles article { position: relative; padding: 43px 42px 0 0; }
.principles article + article { padding-left: 42px; border-left: 1px solid #36506f; }
.principles .number { position: absolute; right: 18px; top: 18px; color: #6f8199; font-family: var(--serif); font-style: italic; font-size: .8rem; }
.principles svg { width: 34px; height: 34px; fill: none; stroke: #79afea; stroke-width: 1.6; margin-bottom: 30px; }
.principles h3 { font-family: var(--serif); font-size: 1.7rem; font-weight: 500; }
.principles p { color: #9facbd; line-height: 1.75; font-size: .9rem; }

.cause { padding: 120px 0; display: grid; grid-template-columns: 1fr .95fr; gap: 110px; align-items: center; }
.cause-copy h2 { font-size: clamp(2.8rem, 4.5vw, 4.5rem); }
.cause-copy > p:not(.eyebrow) { color: #5f6d7e; line-height: 1.75; max-width: 560px; }
.cause-copy .fine-print { font-size: .76rem; padding-left: 14px; border-left: 2px solid #b9cee5; }
.cause-picker { border: 0; padding: 0; margin: 0; }
.cause-picker legend { margin-bottom: 1rem; color: #6a788b; font-size: .73rem; font-weight: 750; text-transform: uppercase; letter-spacing: .12em; }
.cause-option { min-height: 98px; margin-bottom: 12px; padding: 20px 23px; border: 1px solid #d8e1eb; display: grid; grid-template-columns: 44px 1fr 22px; gap: 16px; align-items: center; cursor: pointer; transition: border .2s, background .2s, transform .2s; }
.cause-option:hover { transform: translateX(3px); }
.cause-option.is-selected { background: var(--pale); border-color: #89add4; }
.cause-option input { position: absolute; opacity: 0; pointer-events: none; }
.cause-mark { font-size: 1.6rem; color: var(--blue); }
.cause-option strong, .cause-option small { display: block; }
.cause-option strong { font-family: var(--serif); font-size: 1.25rem; }
.cause-option small { color: #788598; margin-top: 4px; }
.cause-option i { width: 18px; height: 18px; border: 1px solid #9aabbd; border-radius: 50%; position: relative; }
.cause-option.is-selected i::after { content: ""; position: absolute; inset: 3px; border-radius: 50%; background: var(--blue); }
.local-note { display: flex; justify-content: flex-end; align-items: center; gap: 8px; color: #738195; font-size: .72rem; }
.local-note span { width: 7px; height: 7px; background: #4e91d8; border-radius: 50%; box-shadow: 0 0 0 4px #e0edfb; }

.download-section { min-height: 710px; padding: 100px 24px; position: relative; overflow: hidden; display: grid; place-items: center; background: #092754; color: #fff; text-align: center; }
.download-section::before, .download-section::after { content: ""; position: absolute; border: 1px solid rgba(173,207,247,.14); border-radius: 50%; width: 850px; height: 400px; transform: rotate(18deg); }
.download-section::after { transform: rotate(-20deg); width: 1000px; }
.download-glow { position: absolute; width: 680px; height: 680px; border-radius: 50%; background: radial-gradient(circle, rgba(41,115,201,.5), transparent 66%); }
.download-inner { width: min(720px,100%); position: relative; z-index: 2; display: flex; flex-direction: column; align-items: center; }
.download-inner > img { border-radius: 50%; margin-bottom: 27px; box-shadow: 0 14px 35px rgba(0,0,0,.25); }
.centered { justify-content: center; }
.download-inner h2 { margin-bottom: 1rem; }
.download-inner > p:not(.eyebrow) { color: #b9cae0; }
.button-light { margin-top: 20px; color: var(--ink); background: #fff; box-shadow: 0 13px 35px rgba(0,0,0,.18); }
.download-meta { margin-top: 18px; display: flex; justify-content: center; gap: 0; color: #9eb5d1; font-size: .7rem; }
.download-meta span + span::before { content: "·"; margin: 0 10px; }
.preview-notice { width: min(650px, 100%); margin-top: 38px; padding: 18px 22px; border: 1px solid rgba(175,205,239,.25); background: rgba(4,21,47,.32); text-align: left; }
.preview-notice > strong { display: block; margin-bottom: 5px; font-family: var(--serif); font-size: 1.05rem; }
.preview-notice > p { margin-bottom: 13px; color: #adbed3; font-size: .76rem; line-height: 1.55; }
.checksum { width: 100%; border: 0; border-top: 1px solid rgba(175,205,239,.2); padding: 11px 0 0; background: transparent; color: #d8e6f6; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 10px; cursor: pointer; font-size: .67rem; text-align: left; }
.checksum span:first-child { color: #829ab8; }
.checksum code { overflow: hidden; text-overflow: ellipsis; }
.copy-label { color: #91bff2; }

footer { min-height: 110px; padding: 30px max(24px, calc((100% - 1180px)/2)); display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 24px; background: #06182f; color: #8fa2ba; font-size: .72rem; }
.footer-brand { color: #fff; font-size: 1.15rem; }
footer p { margin: 0; }
footer p:last-child { text-align: right; }

.reveal { opacity: 0; transform: translateY(16px); transition: opacity .65s ease, transform .65s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .reveal { opacity: 1; transform: none; transition: none; } * { animation: none !important; transition-duration: .01ms !important; } }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 72px; text-align: center; }
  .hero-copy .eyebrow, .hero-actions { justify-content: center; }
  .hero-lede { margin-inline: auto; }
  .hero-art { min-height: 480px; }
  .mission-heading { grid-template-columns: 1fr; gap: 24px; }
  .principles { grid-template-columns: 1fr; }
  .principles article, .principles article + article { padding: 35px 0; border-left: 0; border-bottom: 1px solid #36506f; }
  .cause { grid-template-columns: 1fr; gap: 55px; }
  footer { grid-template-columns: 1fr; text-align: center; }
  footer > * { justify-self: center; }
  footer p:last-child { text-align: center; }
}

@media (max-width: 680px) {
  .section-shell { width: min(100% - 32px, 1180px); }
  .site-header { width: calc(100% - 28px); height: 70px; }
  .nav-toggle { display: grid; gap: 6px; }
  .nav-toggle span:not(.sr-only) { display: block; width: 24px; height: 2px; background: var(--ink); }
  .primary-nav { position: absolute; z-index: 20; inset: 70px 14px auto; padding: 1.4rem; display: none; flex-direction: column; align-items: stretch; gap: 1.2rem; background: #fff; border: 1px solid #d9e3ed; box-shadow: 0 18px 35px rgba(7,27,58,.14); }
  .primary-nav.is-open { display: flex; }
  .primary-nav a { padding: .5rem; }
  .nav-download { text-align: center; }
  .hero { padding: 68px 0 35px; min-height: 0; }
  h1 { font-size: clamp(3.7rem, 21vw, 5.2rem); }
  .hero-art { min-height: 385px; }
  .halo { width: 355px; height: 355px; }
  .hero-icon { width: 112px; }
  .browser-frame { top: 90px; height: 265px; }
  .browser-content { padding: 27px 32px; }
  .mission { padding: 78px 0 60px; }
  h2 { font-size: 2.8rem; }
  .principles { margin-top: 52px; }
  .cause { padding: 78px 0; }
  .cause-option { padding: 16px; grid-template-columns: 38px 1fr 18px; }
  .download-section { min-height: 700px; padding: 80px 16px; }
  .download-meta { flex-direction: column; gap: 4px; }
  .download-meta span + span::before { content: none; }
  .preview-notice { padding: 17px; }
}