:root {
  color-scheme: light;
  --bg: #f9f9f9;
  --surface: rgba(255, 255, 255, 0.8);
  --surface-strong: #ffffff;
  --surface-low: rgba(242, 244, 244, 0.86);
  --surface-mid: rgba(236, 238, 239, 0.92);
  --text: #2f3334;
  --muted: #5b6061;
  --primary: #565d81;
  --primary-dim: #4a5175;
  --primary-soft: rgba(195, 202, 244, 0.32);
  --secondary-soft: rgba(205, 230, 249, 0.38);
  --outline: rgba(175, 179, 179, 0.24);
  --outline-soft: rgba(175, 179, 179, 0.12);
  --shadow: 0 10px 40px rgba(47, 51, 52, 0.06);
  --shadow-soft: 0 24px 64px rgba(47, 51, 52, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Noto Sans JP", "Hiragino Sans", sans-serif;
  font-size: 0.98rem;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 16%, rgba(195, 202, 244, 0.7) 0%, transparent 36%),
    radial-gradient(circle at 86% 78%, rgba(205, 230, 249, 0.75) 0%, transparent 34%),
    linear-gradient(180deg, #fbfbfb 0%, var(--bg) 100%);
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: auto;
  border-radius: 999px;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
}

body::before {
  top: -10rem;
  left: -8rem;
  width: 22rem;
  height: 22rem;
  background: rgba(195, 202, 244, 0.44);
}

body::after {
  right: -7rem;
  bottom: -9rem;
  width: 20rem;
  height: 20rem;
  background: rgba(247, 233, 219, 0.45);
}

a {
  color: var(--primary-dim);
  text-decoration-color: rgba(86, 93, 129, 0.28);
  text-underline-offset: 0.22em;
}

a:hover {
  color: var(--primary);
}

code {
  padding: 0.12rem 0.36rem;
  border-radius: 0.45rem;
  background: rgba(236, 238, 239, 0.84);
  font-family: "SFMono-Regular", "SF Mono", "Menlo", monospace;
  font-size: 0.9em;
}

.dogwalk-site {
  position: relative;
}

.shell {
  position: relative;
  z-index: 1;
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 72px;
}

.site-bar {
  position: sticky;
  top: 18px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 20px;
  padding: 16px 18px;
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.54)),
    rgba(255, 255, 255, 0.44);
  border: 1px solid var(--outline-soft);
  box-shadow: var(--shadow);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
}

.site-bar-copy {
  display: grid;
  gap: 4px;
}

.brand-mark {
  font-family: "Noto Sans JP", sans-serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
}

.brand-note {
  margin: 0;
  color: var(--muted);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.site-nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.38);
  border: 1px solid transparent;
  color: var(--muted);
  text-decoration: none;
  font-family: "Noto Sans JP", sans-serif;
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition:
    background 180ms ease,
    color 180ms ease,
    border-color 180ms ease,
    transform 180ms ease;
}

.site-nav-link:hover {
  background: rgba(255, 255, 255, 0.68);
  border-color: var(--outline-soft);
  color: var(--text);
  transform: translateY(-1px);
}

.site-nav-link.is-active {
  background: rgba(255, 255, 255, 0.78);
  border-color: var(--outline);
  color: var(--text);
}

.document-frame {
  display: grid;
  gap: 18px;
}

.hero,
.card {
  position: relative;
  overflow: hidden;
  border-radius: 32px;
  border: 1px solid var(--outline-soft);
  box-shadow: var(--shadow);
}

.hero {
  padding: clamp(28px, 5vw, 52px);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.84), rgba(255, 255, 255, 0.56)),
    linear-gradient(135deg, rgba(195, 202, 244, 0.24), rgba(205, 230, 249, 0.16));
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto auto -3rem -2rem;
  width: 12rem;
  height: 12rem;
  border-radius: 999px;
  background: rgba(195, 202, 244, 0.3);
  filter: blur(64px);
  pointer-events: none;
}

.card {
  padding: clamp(22px, 3.4vw, 30px);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.72)),
    var(--surface-low);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(205, 230, 249, 0.52);
  color: var(--primary-dim);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--text);
}

h1,
h2 {
  font-family: "Noto Serif JP", serif;
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

h3 {
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.45;
  color: var(--text);
}

h1 {
  margin-top: 18px;
  font-size: clamp(2.3rem, 6vw, 4.15rem);
}

h2 {
  font-size: clamp(1.38rem, 2vw, 1.72rem);
}

h3 {
  font-size: 1.2rem;
}

p,
li {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.9;
  color: var(--text);
}

.muted {
  margin-top: 12px;
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.stack {
  display: grid;
  gap: 18px;
}

.hero > * + *,
.card > * + * {
  margin-top: 14px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dim) 100%);
  color: #faf8ff;
  text-decoration: none;
  font-family: "Noto Sans JP", sans-serif;
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  box-shadow: 0 16px 32px rgba(86, 93, 129, 0.16);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    filter 180ms ease;
}

.button:hover {
  color: #faf8ff;
  transform: translateY(-1px);
  box-shadow: 0 20px 36px rgba(86, 93, 129, 0.2);
  filter: saturate(1.04);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.56);
  color: var(--primary-dim);
  border: 1px solid var(--outline-soft);
  box-shadow: none;
}

.button.secondary:hover {
  color: var(--primary);
  box-shadow: none;
}

.list {
  margin: 0;
  padding-left: 1.2rem;
}

.list li + li {
  margin-top: 0.55rem;
}

.footer {
  margin: 8px 4px 0;
  color: var(--muted);
  font-size: 0.84rem;
  letter-spacing: 0.04em;
}

@media (max-width: 760px) {
  .shell {
    width: min(100% - 20px, 1040px);
    padding-top: 16px;
    padding-bottom: 48px;
  }

  .site-bar {
    position: static;
    flex-direction: column;
    align-items: stretch;
    padding: 14px;
    border-radius: 22px;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .hero,
  .card {
    border-radius: 24px;
  }
}