:root {
  --ink: #171916;
  --muted: #62675f;
  --line: #dfe3dc;
  --paper: #f7f8f4;
  --white: #fff;
  --soft: #edf0ea;
  --green: #00ab60;
  --green-dark: #087947;
  --dark: #1d211e;
  --shell: 1120px;
  --radius: 22px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 16px; line-height: 1.6; }
body, a, button { -webkit-font-smoothing: antialiased; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; }
.shell { width: min(calc(100% - 48px), var(--shell)); margin-inline: auto; }
.narrow { width: min(calc(100% - 48px), 850px); margin-inline: auto; }
.section { padding: 112px 0; }
.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; left: 16px; top: -60px; z-index: 100; padding: 10px 15px; background: var(--ink); color: white; border-radius: 6px; }
.skip-link:focus { top: 12px; }
:focus-visible { outline: 3px solid var(--green); outline-offset: 4px; }

.site-header { position: fixed; inset: 0 0 auto; z-index: 50; transition: background .2s ease, box-shadow .2s ease; }
.site-header.is-scrolled { background: rgba(247,248,244,.94); box-shadow: 0 1px 0 rgba(23,25,22,.1); backdrop-filter: blur(12px); }
.nav-wrap { min-height: 72px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--ink); text-decoration: none; font-size: 20px; font-weight: 750; letter-spacing: -.04em; }
.brand img { border-radius: 50%; }
.site-nav { display: flex; align-items: center; gap: 36px; }
.site-nav a { position: relative; color: #444942; text-decoration: none; font-size: 14px; font-weight: 650; }
.site-nav a::after { content: ""; position: absolute; height: 2px; left: 0; right: 100%; bottom: -8px; background: var(--green); transition: right .2s ease; }
.site-nav a:hover::after, .site-nav a[aria-current="page"]::after { right: 0; }
.site-nav a[aria-current="page"] { color: var(--ink); }
.language-switcher { display: inline-flex; align-items: center; gap: 6px; margin-left: 6px; padding-left: 24px; border-left: 1px solid var(--line); color: #90958e; font-size: 11px; font-weight: 800; letter-spacing: .08em; }
.language-switcher a { color: #777d75; font-size: inherit; }
.language-switcher strong { color: var(--green-dark); }
.nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 50%; background: var(--paper); align-items: center; justify-content: center; flex-direction: column; gap: 5px; cursor: pointer; }
.nav-toggle > span:not(.sr-only) { width: 16px; height: 1px; background: var(--ink); transition: transform .2s ease; }

.eyebrow { margin: 0 0 22px; color: var(--green-dark); font-size: 12px; line-height: 1.3; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.status-dot { display: inline-block; width: 7px; height: 7px; margin-right: 9px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 5px rgba(0,171,96,.11); vertical-align: 1px; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { letter-spacing: -.045em; line-height: 1.06; }
h1 { margin-bottom: 28px; font-size: clamp(52px, 6.7vw, 88px); font-weight: 540; }
h1 em { color: var(--green); font-style: normal; }
h2 { margin-bottom: 24px; font-size: clamp(38px, 4.6vw, 64px); font-weight: 540; }
h3 { font-size: 23px; font-weight: 650; }

.hero { position: relative; min-height: 760px; padding-top: 160px; overflow: hidden; display: flex; align-items: center; }
.hero-grid { display: grid; grid-template-columns: .92fr 1.08fr; gap: 72px; align-items: center; }
.hero-copy { position: relative; z-index: 2; }
.hero-lede, .page-lede { max-width: 610px; color: var(--muted); font-size: clamp(18px, 2vw, 22px); line-height: 1.55; }
.hero-actions { margin-top: 42px; display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 24px; padding: 14px 20px; border-radius: 8px; text-decoration: none; font-size: 14px; font-weight: 750; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-dark { background: var(--ink); color: white; }
.button-dark:hover { background: var(--green-dark); }
.text-link { color: var(--ink); font-size: 14px; font-weight: 750; text-underline-offset: 5px; }
.orb { position: absolute; pointer-events: none; border: 1px solid rgba(23,25,22,.12); border-radius: 50%; }
.orb::after { content: ""; position: absolute; inset: 18%; border: inherit; border-radius: inherit; }
.orb-one { width: 520px; height: 520px; top: -260px; right: -110px; }

.hero-visual { position: relative; height: 520px; }
.phone-frame { position: absolute; z-index: 2; left: 0; bottom: 0; width: min(68%, 355px); min-height: 470px; padding: 25px 18px 18px; border: 8px solid var(--ink); border-radius: 38px; background: #fff; box-shadow: 0 28px 70px rgba(23,25,22,.14); }
.phone-frame::before { content: ""; position: absolute; width: 72px; height: 5px; top: 10px; left: 50%; transform: translateX(-50%); border-radius: 8px; background: #333631; }
.phone-top { display: grid; grid-template-columns: auto 1fr auto; gap: 9px; align-items: center; padding: 5px 3px 17px; border-bottom: 1px solid var(--line); font-size: 11px; font-weight: 750; }
.mini-mark { width: 22px; height: 22px; border: 6px solid var(--green); border-radius: 50%; }
.chat-date { margin: 22px 0 14px; color: #92978f; text-align: center; font-size: 9px; font-weight: 750; letter-spacing: .1em; }
.bubble { width: 83%; margin-bottom: 12px; padding: 11px 13px; font-size: 11px; line-height: 1.45; }
.bubble-in { border-radius: 4px 15px 15px 15px; background: var(--soft); }
.bubble-out { margin-left: auto; border-radius: 15px 4px 15px 15px; background: #d9f4e7; }
.publish-row { position: absolute; left: 18px; right: 18px; bottom: 19px; padding: 14px; border: 1px solid #a7ddc2; border-radius: 10px; background: #f3fcf8; font-size: 10px; display: flex; align-items: center; justify-content: space-between; }
.publish-row strong { color: var(--green-dark); }
.echo-card { position: absolute; z-index: 3; right: 0; top: 18px; width: 55%; padding: 26px; border-radius: 20px; background: var(--dark); color: white; box-shadow: 0 32px 72px rgba(23,25,22,.22); transform: rotate(2.5deg); }
.echo-card-head { display: flex; align-items: center; gap: 9px; padding-bottom: 22px; border-bottom: 1px solid rgba(255,255,255,.14); font-size: 13px; font-weight: 750; }
.echo-symbol { display: grid; width: 27px; height: 27px; place-items: center; border-radius: 50%; background: var(--green); }
.echo-kicker { margin: 26px 0 12px; color: #84d9ae; font-size: 9px; font-weight: 800; letter-spacing: .15em; }
.echo-card h2 { margin-bottom: 15px; font-size: 28px; }
.echo-card > p:not(.echo-kicker) { color: #c8cdc8; font-size: 12px; }
.echo-meta { display: flex; justify-content: space-between; gap: 15px; margin-top: 32px; color: #909790; font-size: 9px; text-transform: uppercase; letter-spacing: .08em; }
.echo-path { position: absolute; z-index: 1; left: 36%; top: 44%; width: 31%; overflow: visible; fill: none; stroke: var(--green); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.foundation { background: var(--white); }
.split-heading { display: grid; grid-template-columns: 1fr 1fr; align-items: end; gap: 100px; margin-bottom: 64px; }
.split-heading h2 { margin-bottom: 0; }
.split-heading > p { max-width: 500px; margin: 0 0 7px; color: var(--muted); }
.mode-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.mode-card { position: relative; min-height: 310px; padding: 27px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); }
.mode-card.featured { background: #dff5e9; border-color: #b9e7ce; }
.mode-number { color: #8a9088; font-size: 11px; font-weight: 800; letter-spacing: .08em; }
.mode-card h3 { margin: 145px 0 11px; }
.mode-card p { max-width: 240px; margin-bottom: 0; color: var(--muted); font-size: 14px; }
.line-icon { position: absolute; top: 66px; left: 28px; width: 56px; height: 56px; border: 2px solid var(--ink); border-radius: 50%; }
.line-icon::before, .line-icon::after { content: ""; position: absolute; background: var(--ink); }
.person-icon::before { width: 13px; height: 13px; left: 19px; top: 11px; border-radius: 50%; }
.person-icon::after { width: 27px; height: 13px; left: 12px; bottom: 10px; border-radius: 18px 18px 5px 5px; }
.group-icon { box-shadow: 19px 10px 0 -8px #dff5e9, 19px 10px 0 -6px var(--ink); }
.group-icon::before { width: 14px; height: 14px; left: 19px; top: 11px; border-radius: 50%; }
.group-icon::after { width: 27px; height: 13px; left: 12px; bottom: 9px; border-radius: 18px 18px 5px 5px; }
.channel-icon::before { width: 22px; height: 17px; left: 14px; top: 16px; clip-path: polygon(0 30%, 100% 0, 100% 100%, 0 70%); }
.channel-icon::after { width: 4px; height: 14px; left: 15px; top: 29px; transform: rotate(-13deg); }
.message-types { display: flex; align-items: center; gap: 9px; margin-top: 18px; flex-wrap: wrap; }
.message-types span { padding: 8px 13px; border: 1px solid var(--line); border-radius: 99px; color: var(--muted); font-size: 11px; font-weight: 700; }
.message-types .message-label { border: 0; padding-left: 0; color: var(--ink); text-transform: uppercase; letter-spacing: .08em; }

.echo-section { background: var(--dark); color: white; overflow: hidden; }
.echo-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; align-items: start; }
.eyebrow.light { color: #79d9aa; }
.echo-intro { position: sticky; top: 120px; }
.echo-intro > p:not(.eyebrow):not(.fine-print) { color: #bbc1bb; font-size: 18px; }
.fine-print { margin-top: 25px; color: #888f88; font-size: 12px; }
.echo-flow { list-style: none; margin: 0; padding: 0; }
.echo-flow li { display: grid; grid-template-columns: 54px 1fr; gap: 20px; align-items: center; min-height: 112px; padding: 24px; border-top: 1px solid #3c423c; }
.echo-flow li:last-child { border-bottom: 1px solid #3c423c; }
.echo-flow li > span { color: #778078; font-size: 11px; font-weight: 800; }
.echo-flow strong, .echo-flow small { display: block; }
.echo-flow strong { margin-bottom: 5px; font-size: 21px; letter-spacing: -.025em; }
.echo-flow small { color: #9da49d; font-size: 13px; }
.echo-flow .flow-accent { background: var(--green); border: 0; border-radius: 13px; color: #081b12; }
.echo-flow .flow-accent > span, .echo-flow .flow-accent small { color: #164f34; }
.echo-uses { display: flex; gap: 10px; margin-top: 84px; padding-top: 24px; border-top: 1px solid #3c423c; flex-wrap: wrap; }
.echo-uses span { padding: 8px 13px; border: 1px solid #444b44; border-radius: 99px; color: #abb1ab; font-size: 11px; }

.philosophy { background: #e6e9e2; }
.philosophy-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 110px; }
.principle-list article { display: grid; grid-template-columns: 45px .65fr 1fr; gap: 20px; padding: 30px 0; border-top: 1px solid #c6cbc4; align-items: baseline; }
.principle-list article:last-child { border-bottom: 1px solid #c6cbc4; }
.principle-list span { color: var(--green-dark); font-size: 11px; font-weight: 800; }
.principle-list h3 { margin: 0; font-size: 19px; }
.principle-list p { margin: 0; color: var(--muted); font-size: 14px; }

.status-section { background: white; }
.status-card { position: relative; display: grid; grid-template-columns: .75fr 1fr 150px; gap: 72px; align-items: center; padding: 60px; border-radius: 28px; background: var(--paper); overflow: hidden; }
.status-card h2 { margin-bottom: 0; }
.status-card p { color: var(--muted); }
.placeholder-note { margin-bottom: 0; font-size: 12px; }
.status-ring { display: grid; width: 140px; height: 140px; place-items: center; border: 1px solid #a6aca4; border-radius: 50%; text-align: center; transform: rotate(-8deg); }
.status-ring span { font-size: 11px; font-weight: 850; letter-spacing: .12em; line-height: 1.35; }
.status-ring::after { content: ""; position: absolute; width: 8px; height: 8px; margin-top: -140px; border-radius: 50%; background: var(--green); }

.closing { background: var(--green); color: #092518; text-align: center; }
.closing-inner { display: flex; align-items: center; flex-direction: column; }
.closing img { margin-bottom: 28px; }
.closing .eyebrow { color: #164e35; }
.closing h2 { font-size: clamp(44px, 6vw, 76px); }
.closing p:last-child { margin-bottom: 0; }
.compact-closing { padding: 90px 0; }
.compact-closing h2 { max-width: 720px; font-size: clamp(38px, 5vw, 60px); }

.site-footer { padding: 62px 0 26px; background: var(--ink); color: white; }
.footer-main { display: grid; grid-template-columns: .6fr 1.2fr .7fr; gap: 50px; align-items: start; padding-bottom: 55px; }
.footer-brand { color: white; }
.footer-brand img { filter: invert(1); }
.footer-main > p { max-width: 330px; color: #9ea49e; font-size: 14px; }
.footer-main nav { display: flex; justify-content: flex-end; gap: 24px; }
.footer-main nav a { color: #d6dad6; font-size: 13px; text-decoration: none; }
.footer-main nav a:hover { color: #76daad; }
.footer-connect { display: flex; justify-content: space-between; align-items: center; gap: 28px; padding: 24px 0; border-top: 1px solid #383c38; }
.email-link { color: white; font-size: 14px; font-weight: 700; text-underline-offset: 5px; }
.email-link:hover { color: #76daad; }
.social-list { display: flex; align-items: center; gap: 12px; }
.social-placeholder { display: inline-flex; align-items: center; gap: 8px; color: #8f968f; font-size: 11px; cursor: not-allowed; }
.social-placeholder img { width: 18px; height: 18px; opacity: .7; filter: invert(1); }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; padding-top: 22px; border-top: 1px solid #383c38; color: #7f867f; font-size: 11px; }
.placeholder { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.page-hero { position: relative; padding-top: 195px; padding-bottom: 125px; overflow: hidden; background: var(--paper); }
.page-hero h1 { max-width: 900px; }
.orb-page { width: 440px; height: 440px; top: -220px; right: -60px; }
.article-section { background: white; }
.article-layout { display: grid; grid-template-columns: 220px minmax(0, 700px); gap: 110px; justify-content: center; align-items: start; }
.article-index { position: sticky; top: 110px; display: flex; flex-direction: column; gap: 13px; padding-top: 7px; }
.article-index > span { margin-bottom: 7px; color: #92978f; font-size: 10px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.article-index a { color: var(--muted); font-size: 12px; text-decoration: none; }
.article-index a:hover { color: var(--green-dark); }
.prose > section { padding: 0 0 84px; scroll-margin-top: 110px; }
.prose > section + section { padding-top: 84px; border-top: 1px solid var(--line); }
.prose h2 { font-size: clamp(34px, 4vw, 50px); }
.prose p { color: var(--muted); font-size: 17px; }
.prose blockquote { margin: 42px 0 0; padding: 25px 0 25px 30px; border-left: 3px solid var(--green); color: var(--ink); font-size: 24px; line-height: 1.4; letter-spacing: -.025em; }
.inline-flow { display: flex; align-items: center; gap: 11px; margin: 34px 0; flex-wrap: wrap; }
.inline-flow span { padding: 9px 13px; border-radius: 8px; background: var(--soft); font-size: 12px; font-weight: 750; }
.inline-flow span:last-child { background: var(--green); }
.inline-flow b { color: #a0a69e; }
.value-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.value-grid article { padding: 24px; border: 1px solid var(--line); border-radius: 14px; background: var(--paper); }
.value-grid h3 { margin-bottom: 12px; font-size: 18px; }
.value-grid p { margin: 0; font-size: 14px; }

.privacy-hero { background: #e8ebe5; }
.draft-badge { display: inline-flex; align-items: center; margin-top: 28px; padding: 9px 14px; border: 1px solid #c8cec5; border-radius: 99px; font-size: 11px; font-weight: 750; text-transform: uppercase; letter-spacing: .07em; }
.policy-section { background: white; }
.policy-layout { display: grid; grid-template-columns: 260px minmax(0, 700px); gap: 90px; justify-content: center; align-items: start; }
.policy-aside { position: sticky; top: 110px; padding: 24px; border-radius: 14px; background: var(--paper); }
.policy-aside div { padding: 0 0 15px; margin-bottom: 15px; border-bottom: 1px solid var(--line); }
.policy-aside span, .policy-aside strong { display: block; overflow-wrap: anywhere; }
.policy-aside span { color: #8b9189; font-size: 10px; font-weight: 800; text-transform: uppercase; letter-spacing: .09em; }
.policy-aside strong { margin-top: 4px; font-size: 12px; }
.policy-aside p { margin: 20px 0 0; color: var(--muted); font-size: 12px; }
.policy.prose > section { padding-bottom: 50px; }
.policy.prose > section + section { padding-top: 50px; }
.policy h2 { font-size: 28px; }
.policy p { font-size: 15px; }
.policy .todo { padding: 15px 17px; border-left: 3px solid var(--green); background: #eaf7f0; color: #315b46; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; overflow-wrap: anywhere; }
.contact-placeholder { padding: 20px; border-radius: 10px; background: var(--soft); color: var(--ink) !important; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; overflow-wrap: anywhere; }

@media (max-width: 900px) {
  .section { padding: 88px 0; }
  .hero { padding-top: 130px; }
  .hero-grid { grid-template-columns: 1fr; gap: 55px; }
  .hero-copy { max-width: 720px; }
  .hero-visual { width: min(100%, 650px); margin-inline: auto; }
  .split-heading, .echo-layout, .philosophy-grid { grid-template-columns: 1fr; gap: 45px; }
  .echo-intro { position: static; }
  .status-card { grid-template-columns: 1fr 1fr; gap: 45px; }
  .status-ring { display: none; }
  .article-layout, .policy-layout { grid-template-columns: 1fr; gap: 50px; }
  .article-index, .policy-aside { position: static; }
  .article-index { display: none; }
  .policy-aside { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
  .policy-aside div { margin: 0; }
  .policy-aside p { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
  .shell, .narrow { width: min(calc(100% - 32px), var(--shell)); }
  .section { padding: 72px 0; }
  .nav-wrap { min-height: 64px; }
  .nav-toggle { display: flex; }
  .site-nav { position: absolute; left: 16px; right: 16px; top: 58px; display: none; padding: 12px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); box-shadow: 0 15px 30px rgba(23,25,22,.12); flex-direction: column; align-items: stretch; gap: 0; }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 11px; }
  .language-switcher { margin: 7px 11px 3px; padding: 12px 0 2px; border-top: 1px solid var(--line); border-left: 0; }
  .language-switcher a { padding: 0; }
  .site-nav a::after { display: none; }
  .nav-toggle[aria-expanded="true"] span:nth-last-child(2) { transform: translateY(3px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3px) rotate(-45deg); }
  h1 { font-size: clamp(45px, 14vw, 66px); }
  h2 { font-size: 38px; }
  .hero { min-height: 0; padding-top: 122px; }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .hero-visual { height: 435px; }
  .phone-frame { width: 67%; min-height: 390px; border-width: 6px; border-radius: 30px; }
  .bubble { font-size: 9px; }
  .echo-card { top: 5px; width: 58%; padding: 18px; }
  .echo-card h2 { font-size: 21px; }
  .echo-card > p:not(.echo-kicker) { font-size: 10px; }
  .echo-meta { display: none; }
  .mode-grid { grid-template-columns: 1fr; }
  .mode-card { min-height: 245px; }
  .mode-card h3 { margin-top: 105px; }
  .principle-list article { grid-template-columns: 36px 1fr; }
  .principle-list article p { grid-column: 2; }
  .status-card { grid-template-columns: 1fr; padding: 32px 25px; }
  .footer-main { grid-template-columns: 1fr; gap: 25px; }
  .footer-main nav { justify-content: flex-start; }
  .footer-connect { align-items: flex-start; flex-direction: column; }
  .social-list { align-items: flex-start; flex-direction: column; }
  .footer-bottom { flex-direction: column; }
  .page-hero { padding-top: 145px; padding-bottom: 80px; }
  .prose > section { padding-bottom: 58px; }
  .prose > section + section { padding-top: 58px; }
  .value-grid, .policy-aside { grid-template-columns: 1fr; }
  .policy-aside p { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}