:root {
  --paper: #f4efe4;
  --paper-deep: #e8dfce;
  --ink: #18251f;
  --ink-soft: #536059;
  --vermilion: #b33b2e;
  --vermilion-dark: #8e2c23;
  --jade: #2f5b4e;
  --line: rgba(24, 37, 31, 0.18);
  --max: 1240px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, transparent 49.85%, rgba(24, 37, 31, 0.025) 50%, transparent 50.15%),
    var(--paper);
  font-family: "Noto Serif CJK SC", "Songti SC", "STSong", "SimSun", serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
p { line-height: 1.85; }
.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  padding: .75rem 1rem;
  color: #fff;
  background: var(--ink);
}
.skip-link:focus { top: 1rem; }

.site-header {
  width: min(calc(100% - 64px), var(--max));
  min-height: 96px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: .12em;
  font-size: 1.05rem;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  color: var(--paper);
  background: var(--vermilion);
  border-radius: 4px 4px 12px 4px;
  font-size: 1.15rem;
}
.brand small {
  display: block;
  margin-top: 3px;
  color: var(--ink-soft);
  font: 500 .55rem/1.2 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: .28em;
}
nav { display: flex; gap: clamp(18px, 3vw, 42px); }
nav a {
  position: relative;
  padding: 12px 0;
  text-decoration: none;
  color: var(--ink-soft);
  font: 600 .82rem/1 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: .12em;
}
nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 4px;
  width: 100%;
  height: 1px;
  background: var(--vermilion);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .25s ease;
}
nav a:hover::after, nav a:focus-visible::after { transform: scaleX(1); transform-origin: left; }
a:focus-visible { outline: 2px solid var(--vermilion); outline-offset: 4px; }

main, footer { overflow: hidden; }
.hero {
  width: min(calc(100% - 64px), var(--max));
  min-height: 720px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  align-items: center;
  gap: 7vw;
  padding: 80px 0 96px;
}
.eyebrow, .section-index {
  margin: 0 0 26px;
  color: var(--vermilion-dark);
  font: 700 .7rem/1.4 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: .2em;
  text-transform: uppercase;
}
.eyebrow { display: flex; align-items: center; gap: 12px; }
.eyebrow span { width: 34px; height: 1px; background: var(--vermilion); }
h1, h2, h3, p { margin-top: 0; }
h1 {
  margin-bottom: 28px;
  font-weight: 600;
  font-size: clamp(3rem, 6.3vw, 5.75rem);
  line-height: 1.12;
  letter-spacing: -.055em;
}
h1 em { color: var(--vermilion); font-style: normal; }
.hero-lead {
  max-width: 630px;
  margin-bottom: 34px;
  color: var(--ink-soft);
  font-size: 1.05rem;
}
.status {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  padding: 12px 17px;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: rgba(255, 255, 255, .25);
  font-family: ui-sans-serif, system-ui, sans-serif;
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--vermilion);
  box-shadow: 0 0 0 5px rgba(179, 59, 46, .12);
}
.status strong, .status small { display: block; }
.status strong { font-size: .78rem; }
.status small { margin-top: 2px; color: var(--ink-soft); font-size: .68rem; }

.hero-art {
  position: relative;
  min-height: 520px;
  isolation: isolate;
}
.hero-art::before {
  content: "";
  position: absolute;
  inset: 7% 5% 0 15%;
  z-index: -3;
  border-radius: 48% 52% 44% 56%;
  background: var(--paper-deep);
  transform: rotate(-5deg);
}
.orbit { position: absolute; z-index: -2; border: 1px solid var(--line); border-radius: 50%; }
.orbit-one { inset: 12% 7% 10% 12%; transform: rotate(18deg); }
.orbit-two { inset: 26% -4% 25% 0; transform: rotate(-24deg); }
.seal {
  position: absolute;
  display: grid;
  place-items: center;
  align-content: center;
  aspect-ratio: 1;
  border-radius: 50%;
  text-align: center;
  box-shadow: 0 20px 45px rgba(24, 37, 31, .12);
}
.seal span, .seal small {
  font: 600 .58rem/1.2 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: .18em;
}
.seal strong { display: block; margin: 5px 0; font-size: 1.55rem; letter-spacing: .12em; }
.seal-main {
  top: 21%;
  left: 26%;
  width: 54%;
  color: #f7f2e8;
  background: var(--jade);
  border: 8px double rgba(244, 239, 228, .5);
  transform: rotate(-5deg);
}
.seal-main strong { font-size: clamp(2.4rem, 5vw, 4rem); letter-spacing: .06em; }
.seal-main small { opacity: .65; }
.seal-idea, .seal-product, .seal-delivery { width: 24%; border: 1px solid rgba(24, 37, 31, .18); }
.seal-idea { top: 4%; left: 4%; background: #d7cbb3; transform: rotate(8deg); }
.seal-product { right: 0; top: 13%; color: #fff7eb; background: var(--vermilion); transform: rotate(7deg); }
.seal-delivery { right: 6%; bottom: 5%; background: #f7f2e8; transform: rotate(-8deg); }
.art-note {
  position: absolute;
  left: 2%;
  bottom: 12%;
  margin: 0;
  color: var(--ink-soft);
  font-size: .82rem;
  line-height: 1.65;
  letter-spacing: .12em;
}

.manifesto {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 5vw;
  padding: 120px max(32px, calc((100vw - var(--max)) / 2));
  color: #f3eee4;
  background: var(--ink);
}
.manifesto .section-index { color: #d28b7c; }
.manifesto h2, .section-header h2, .path h2, .about h2 {
  margin-bottom: 28px;
  font-size: clamp(2.25rem, 4.2vw, 4.2rem);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: -.035em;
}
.manifesto p:last-child { max-width: 760px; margin: 0; color: #b9c0bc; font-size: 1.06rem; }

.audiences { width: min(calc(100% - 64px), var(--max)); margin: 0 auto; padding: 130px 0; }
.section-header { display: grid; grid-template-columns: 1fr 2.1fr 1.15fr; gap: 4vw; align-items: start; }
.section-header h2 { margin-top: -10px; }
.section-header > p:last-child { color: var(--ink-soft); margin: 0; font-size: .92rem; }
.audience-list { margin-top: 70px; border-top: 1px solid var(--line); }
.audience-list article {
  display: grid;
  grid-template-columns: .45fr 1.05fr 1.7fr 1.2fr;
  align-items: center;
  gap: 24px;
  min-height: 190px;
  border-bottom: 1px solid var(--line);
  transition: padding .25s ease, background .25s ease;
}
.audience-list article:hover { padding: 0 24px; background: rgba(255, 255, 255, .24); }
.number { color: var(--vermilion); font: 700 .66rem/1 ui-sans-serif, system-ui, sans-serif; }
.article-title { display: flex; align-items: center; gap: 17px; }
.glyph {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  flex: 0 0 auto;
  color: var(--paper);
  background: var(--jade);
  border-radius: 50% 50% 50% 12%;
  font-size: 1.05rem;
}
article:nth-child(2) .glyph { background: var(--vermilion); border-radius: 50% 12% 50% 50%; }
article:nth-child(3) .glyph { color: var(--ink); background: var(--paper-deep); border-radius: 12% 50% 50%; }
.article-title h3 { margin: 0; font-size: 1.3rem; }
.audience-list article > p:not(.number) { margin: 0; color: var(--ink-soft); font-size: .9rem; }
article ul { margin: 0; padding: 0; list-style: none; font: 600 .7rem/2 ui-sans-serif, system-ui, sans-serif; color: var(--ink-soft); }
article li::before { content: "—"; margin-right: 8px; color: var(--vermilion); }

.path {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 9vw;
  padding: 130px max(32px, calc((100vw - var(--max)) / 2));
  background: var(--paper-deep);
}
.path-intro > p:last-child { max-width: 520px; color: var(--ink-soft); }
.path-list { margin: 0; padding: 0; list-style: none; counter-reset: steps; border-top: 1px solid var(--line); }
.path-list li { display: grid; grid-template-columns: 70px 1fr; gap: 20px; align-items: center; min-height: 112px; border-bottom: 1px solid var(--line); }
.path-list span { color: var(--vermilion); font: 700 .65rem/1 ui-sans-serif, system-ui, sans-serif; }
.path-list strong, .path-list small { display: block; }
.path-list strong { margin-bottom: 7px; font-size: 1.2rem; letter-spacing: .08em; }
.path-list small { color: var(--ink-soft); font: .78rem/1.4 ui-sans-serif, system-ui, sans-serif; }

.about {
  width: min(calc(100% - 64px), var(--max));
  margin: 0 auto;
  padding: 150px 0;
  display: grid;
  grid-template-columns: .8fr 1.4fr;
  gap: 9vw;
  align-items: center;
}
.about-mark { display: grid; grid-template-columns: repeat(3, 1fr); max-width: 420px; transform: rotate(-3deg); }
.about-mark span {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  color: var(--vermilion);
  border: 2px solid var(--vermilion);
  font-size: clamp(2.5rem, 5vw, 4rem);
}
.about-mark span + span { margin-left: -2px; }
.about > div:last-child > p:last-child { max-width: 690px; color: var(--ink-soft); }

footer {
  padding: 70px max(32px, calc((100vw - var(--max)) / 2)) 34px;
  color: #eee8dd;
  background: var(--ink);
}
.footer-brand { display: flex; align-items: baseline; gap: 15px; }
.footer-brand strong { font-size: 1.65rem; letter-spacing: .12em; }
.footer-brand span { color: #97a19b; font: 600 .65rem/1 ui-sans-serif, system-ui, sans-serif; letter-spacing: .28em; }
footer > p { margin: 12px 0 60px; color: #97a19b; font-size: .85rem; letter-spacing: .15em; }
.footer-legal { display: flex; justify-content: space-between; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.13); color: #97a19b; font: .7rem/1.5 ui-sans-serif, system-ui, sans-serif; }
.footer-legal a { text-underline-offset: 4px; }

@media (max-width: 900px) {
  .site-header, .hero, .audiences, .about { width: min(calc(100% - 40px), var(--max)); }
  .site-header { min-height: 82px; }
  nav { gap: 18px; }
  nav a:nth-child(2), nav a:nth-child(3) { display: none; }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 50px; padding: 70px 0 90px; }
  .hero-copy { max-width: 700px; }
  .hero-art { min-height: 500px; max-width: 590px; width: 100%; margin: 0 auto; }
  .manifesto { grid-template-columns: 1fr; }
  .section-header { grid-template-columns: 1fr 2fr; }
  .section-header > p:last-child { grid-column: 2; }
  .audience-list article { grid-template-columns: .25fr 1fr 1.6fr; }
  article ul { display: none; }
  .path { grid-template-columns: 1fr; }
  .about { grid-template-columns: .7fr 1.3fr; }
}

@media (max-width: 600px) {
  body { overflow-x: hidden; }
  .site-header, .hero, .audiences, .about { width: min(calc(100% - 32px), var(--max)); }
  .site-header { min-height: 74px; }
  .brand { gap: 8px; font-size: .9rem; }
  .brand-mark { width: 34px; height: 34px; }
  nav a { font-size: .72rem; }
  nav a:nth-child(4) { display: none; }
  .hero { padding-top: 56px; }
  h1 { font-size: clamp(2.7rem, 14vw, 4.1rem); }
  .hero-copy { min-width: 0; }
  .hero-lead { max-width: 100%; overflow-wrap: anywhere; font-size: .96rem; }
  .hero-art { min-height: 390px; }
  .seal-main { width: 58%; left: 22%; }
  .seal-idea, .seal-product, .seal-delivery { width: 27%; }
  .art-note { display: none; }
  .manifesto, .path { padding: 90px 20px; }
  .manifesto h2, .section-header h2, .path h2, .about h2 { font-size: 2.25rem; }
  .audiences { padding: 95px 0; }
  .section-header { display: block; }
  .section-header > p:last-child { margin-bottom: 50px; }
  .audience-list { margin-top: 0; }
  .audience-list article { display: block; padding: 28px 0; min-height: 0; }
  .audience-list article:hover { padding: 28px 0; }
  .number { margin-bottom: 16px; }
  .article-title { margin-bottom: 18px; }
  .audience-list article > p:not(.number) { padding-left: 69px; }
  .about { grid-template-columns: 1fr; padding: 95px 0; }
  .about-mark { max-width: 290px; }
  footer { padding: 58px 20px 28px; }
  .footer-legal { flex-direction: column; gap: 10px; }
}

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