/* KaiReader — calm, paper/e-ink identity on the shared dark shell.
   Deliberately does NOT use KaiTheme: the real app is a monochrome e-ink reader. */

body { --kr-paper: #f4f2ea; --kr-ink: #17171a; --kr-warm: #c8792f; }

.kr-hero {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 60px;
  align-items: center;
  padding: 92px 0 80px;
}
.kr-appbadge { display: inline-flex; align-items: center; gap: 12px; margin: 0 0 22px; font-weight: 750; letter-spacing: -.01em; }
.kr-appbadge img { border-radius: 11px; background: #fff; padding: 5px; box-shadow: 0 6px 18px #0006; }
.kr-hero h1 { font-size: clamp(50px, 8vw, 100px); }
.kr-hero h1 span { color: var(--kr-warm); }
.kr-lead { max-width: 540px; margin: 30px 0 22px; color: var(--muted); font-size: clamp(17px, 2vw, 21px); }
.kr-tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 24px; }
.kr-tags span { padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; font-size: 12px; font-weight: 700; letter-spacing: .04em; color: var(--muted); }

/* The morning page — the star of the hero, a paper card on the dark shell */
.kr-hero-art { display: grid; place-items: center; padding: 26px; border-radius: 30px; background: #e9e9e3; border: 1px solid #cfd0c9; box-shadow: 0 40px 100px #0009; }
.kr-page {
  width: min(92%, 400px);
  padding: 30px 28px 20px;
  border-radius: 14px;
  background: #fbfbf7;
  border: 1px solid #d9dad2;
  box-shadow: 12px 14px 0 #17171712;
  color: var(--kr-ink);
  display: flex;
  flex-direction: column;
}
.kr-page-top, .kr-page-foot { display: flex; justify-content: space-between; font: 800 10px/1 ui-monospace, monospace; letter-spacing: .12em; text-transform: uppercase; color: #6b7280; }
.kr-headline { margin: 16px 0 14px; font-size: 24px; line-height: 1.14; letter-spacing: -.035em; }
.kr-para { margin: 0 0 14px; font-size: 15px; line-height: 1.55; color: #33343a; }
.kr-para ruby rt { color: #6b7280; font-size: .62em; }
.kr-gloss { background: linear-gradient(transparent 62%, #c8792f44 62%); color: inherit; padding: 0 1px; }
.kr-line { height: 9px; border-radius: 4px; background: #d7d8d0; margin-bottom: 11px; }
.kr-line.short { width: 58%; }
.kr-page-foot { margin-top: 14px; padding-top: 14px; border-top: 1px solid #e2e3db; }

main > section + section { border-top: 1px solid #ffffff12; }
.kr-how, .kr-features, .kr-privacy { padding: 80px 0; }

.kr-how h2 { font-size: clamp(34px, 5vw, 56px); letter-spacing: -.05em; margin: 0 0 40px; }
.kr-steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.kr-steps li { position: relative; padding-top: 8px; }
.kr-step-n { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--line); color: var(--kr-warm); font-weight: 800; margin-bottom: 16px; }
.kr-steps strong { display: block; font-size: 20px; letter-spacing: -.03em; margin-bottom: 8px; }
.kr-steps p { margin: 0; color: var(--muted); font-size: 15px; }

.kr-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.kr-feature { padding: 26px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.kr-feature h3 { margin: 0 0 10px; font-size: 18px; letter-spacing: -.02em; }
.kr-feature p { margin: 0; color: var(--muted); font-size: 14px; }

.kr-privacy { max-width: 820px; margin-inline: auto; text-align: center; }
.kr-privacy blockquote { margin: 0 0 30px; font-size: clamp(21px, 3.2vw, 32px); line-height: 1.32; letter-spacing: -.03em; color: var(--text); }
.kr-cta { display: inline-flex; gap: 12px; align-items: center; padding: 13px 22px; border-radius: 999px; font-weight: 750; text-decoration: none; color: var(--bg); background: var(--kr-warm); }
.kr-cta:hover, .kr-cta:focus-visible { filter: brightness(1.08); }

@media (max-width: 860px) {
  .kr-hero { grid-template-columns: 1fr; gap: 40px; padding-top: 68px; }
  .kr-hero-art { order: -1; max-width: 460px; }
  .kr-steps, .kr-features { grid-template-columns: 1fr; }
}