@import url("./brand-tokens.css");

:root {
  --ink: var(--kecha-ink);
  --ink-soft: var(--kecha-ink-soft);
  --panel: #102c3b;
  --paper: var(--kecha-paper);
  --paper-2: #eaf5f2;
  --text: #eaf7f4;
  --muted: #a9c0c4;
  --accent: var(--kecha-accent);
  --accent-strong: var(--kecha-accent-strong);
  --cyan: var(--kecha-portfolio-cyan);
  --line: rgba(211, 244, 238, .18);
  --radius: 22px;
  --shadow: 0 24px 80px rgba(1, 10, 17, .28);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--ink); color: var(--text); font-size: 16px; line-height: 1.6; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.shell { width: min(1160px, calc(100% - 36px)); margin-inline: auto; }
.site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--line); background: rgba(7, 21, 33, .9); backdrop-filter: blur(18px); }
.nav-row { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font-size: 1.15rem; font-weight: 800; letter-spacing: -.02em; }
.brand svg { width: 32px; height: 32px; }
.brand small { color: var(--muted); font-size: .75rem; font-weight: 650; letter-spacing: .06em; text-transform: uppercase; }
nav { display: flex; align-items: center; gap: 20px; }
nav a { text-decoration: none; color: var(--muted); font-size: .94rem; font-weight: 650; }
nav a:hover, nav a:focus-visible { color: var(--text); }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: 8px; padding: 0 20px; border: 1px solid transparent; border-radius: 999px; background: var(--accent); color: #021a13; font: inherit; font-weight: 800; text-decoration: none; cursor: pointer; }
.button:hover { background: #4ee0b5; }
.button.secondary { border-color: var(--line); background: transparent; color: var(--text); }
.button.disabled { cursor: default; opacity: .72; }
:focus-visible { outline: 3px solid var(--cyan); outline-offset: 3px; }
.hero { position: relative; overflow: hidden; padding: 92px 0 74px; }
.hero::before { content: ""; position: absolute; width: 540px; height: 540px; right: -160px; top: -210px; border-radius: 50%; background: radial-gradient(circle, rgba(33,201,151,.22), rgba(91,214,232,.06) 45%, transparent 70%); }
.hero-grid { position: relative; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(320px, .85fr); align-items: center; gap: 64px; }
.eyebrow { margin-bottom: 16px; color: var(--accent); font-size: .78rem; font-weight: 850; letter-spacing: .15em; text-transform: uppercase; }
h1, h2, h3 { margin: 0; line-height: 1.08; letter-spacing: -.035em; }
h1 { max-width: 800px; font-size: clamp(3rem, 7vw, 6.6rem); }
h2 { font-size: clamp(2rem, 4.3vw, 3.9rem); }
h3 { font-size: 1.25rem; }
.lede { max-width: 700px; margin: 24px 0 0; color: var(--muted); font-size: clamp(1.08rem, 2vw, 1.32rem); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.platform-map { position: relative; min-height: 430px; padding: 26px; border: 1px solid var(--line); border-radius: 36px; background: linear-gradient(150deg, rgba(22,59,72,.94), rgba(9,28,42,.72)); box-shadow: var(--shadow); }
.platform-core { display: grid; place-items: center; width: 146px; height: 146px; margin: 116px auto 0; border: 1px solid rgba(33,201,151,.65); border-radius: 42px; background: rgba(33,201,151,.11); font-size: 1.65rem; font-weight: 850; }
.platform-app { position: absolute; width: 155px; padding: 16px; border: 1px solid var(--line); border-radius: 18px; background: #0b2432; box-shadow: 0 12px 32px rgba(0,0,0,.22); }
.platform-app b { display: block; margin-bottom: 4px; }
.platform-app span { color: var(--muted); font-size: .85rem; line-height: 1.35; }
.platform-app.one { top: 24px; left: 24px; }
.platform-app.two { top: 24px; right: 24px; }
.platform-app.three { bottom: 24px; left: 50%; transform: translateX(-50%); }
.platform-map::after { content: "One platform • bounded applications"; position: absolute; left: 0; right: 0; bottom: 94px; text-align: center; color: var(--muted); font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; }
.light { background: var(--paper); color: var(--ink); }
.section { padding: 90px 0; }
.section-head { display: grid; grid-template-columns: 1fr .8fr; gap: 56px; align-items: end; margin-bottom: 42px; }
.section-head p { margin: 0; color: #49616a; font-size: 1.08rem; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.priority-grid { grid-template-columns: repeat(2, 1fr); }
.card { min-height: 260px; padding: 28px; border: 1px solid #d7e7e3; border-radius: var(--radius); background: white; color: var(--ink); box-shadow: 0 16px 40px rgba(13,43,51,.07); }
.card .tag { display: inline-block; margin-bottom: 42px; color: #08795d; font-size: .76rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.card p { color: #53676e; }
.card a { color: #08795d; font-weight: 800; text-underline-offset: 4px; }
.card.muted { background: #eef6f4; }
.portfolio-note { display: grid; grid-template-columns: .8fr 1.2fr; gap: 34px; align-items: center; margin-top: 18px; padding: 28px; border: 1px solid #cfe3de; border-radius: var(--radius); background: #e5f3ef; }
.portfolio-note .tag { display: inline-block; margin-bottom: 10px; color: #08795d; font-size: .76rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.portfolio-note p { margin: 0; color: #49616a; }
.portfolio-note a { color: #08795d; font-weight: 800; text-underline-offset: 4px; }
.chain { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; gap: 14px; align-items: stretch; }
.chain-step { display: grid; align-content: center; min-height: 170px; padding: 24px; border: 1px solid var(--line); border-radius: 20px; background: var(--ink-soft); }
.chain-step span { color: var(--accent); font-size: .76rem; font-weight: 850; letter-spacing: .12em; }
.chain-step strong { margin-top: 10px; font-size: 1.15rem; }
.chain-step small { margin-top: 4px; color: var(--muted); font-size: .88rem; }
.chain-arrow { display: grid; place-items: center; color: var(--accent); font-size: 1.5rem; }
.split { display: grid; grid-template-columns: .85fr 1.15fr; gap: 64px; align-items: start; }
.list { display: grid; gap: 14px; }
.list article { padding: 22px; border: 1px solid var(--line); border-radius: 18px; background: var(--ink-soft); }
.list p { margin: 7px 0 0; color: var(--muted); }
.principles { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.principles article { min-height: 128px; padding: 22px; border: 1px solid #d7e7e3; border-radius: 18px; background: #fff; }
.principles article:last-child { grid-column: 1 / -1; }
.principles span { color: #08795d; font-size: .78rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.principles p { margin: 8px 0 0; color: #49616a; }
.use-cases { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.use-case { padding: 24px; border: 1px solid #d7e7e3; border-radius: 18px; background: #fff; }
.use-case p { margin-bottom: 0; color: #53676e; }
.notice { margin-top: 28px; padding: 18px 20px; border-left: 4px solid var(--accent); background: rgba(33,201,151,.09); color: var(--muted); }
.cta { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 30px; padding: 42px; border: 1px solid var(--line); border-radius: 28px; background: linear-gradient(135deg, #123444, #0b2533); }
.cta p { margin: 12px 0 0; color: var(--muted); }
footer { border-top: 1px solid var(--line); }
.footer-row { min-height: 110px; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--muted); font-size: .9rem; }
.footer-row strong { color: var(--text); }
@media (max-width: 900px) {
  .hero-grid, .section-head, .split, .portfolio-note { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .chain { grid-template-columns: 1fr; }
  .chain-arrow { transform: rotate(90deg); min-height: 24px; }
  .platform-map { min-height: 390px; }
  .hero { padding-top: 62px; }
  nav a:not(.button) { display: none; }
}
@media (max-width: 620px) {
  .shell { width: min(100% - 24px, 1160px); }
  .nav-row { min-height: 66px; }
  .brand small { display: none; }
  .hero { padding: 54px 0; }
  h1 { font-size: clamp(2.7rem, 14vw, 4.2rem); }
  .platform-map { min-height: auto; display: grid; gap: 10px; padding: 16px; }
  .platform-core { width: auto; height: auto; min-height: 90px; margin: 0; }
  .platform-app { position: static; width: auto; }
  .platform-app.three { transform: none; }
  .platform-map::after { display: none; }
  .section { padding: 64px 0; }
  .use-cases { grid-template-columns: 1fr; }
  .principles { grid-template-columns: 1fr; }
  .principles article:last-child { grid-column: auto; }
  .cta { grid-template-columns: 1fr; padding: 28px; }
  .footer-row { align-items: flex-start; flex-direction: column; justify-content: center; }
}