/* DesignCat corporate site
   Brand colours come from the official logo data (Design Cat inc完.ai). */
:root {
  --green-deep: #066839;
  --green: #39B54A;
  --green-tint: #EAF5EC;
  --ink: #333132;
  --ink-deep: #231F20;
  --muted: #62605E;
  --line: #E2E5DF;
  --paper: #FFFFFF;
  --paper-alt: #F5F7F3;

  --font-jp: "Zen Kaku Gothic New", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  --font-en: "Chakra Petch", "Zen Kaku Gothic New", "Hiragino Sans", sans-serif;

  --wrap: 1120px;
  --gutter: clamp(20px, 5vw, 40px);
  --radius: 18px;
  --header-h: 72px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-jp);
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: 0.02em;
  font-feature-settings: "palt" 1;
  -webkit-font-smoothing: antialiased;
  word-break: auto-phrase;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3, p, dl, dd, ul { margin: 0; }
ul { padding: 0; list-style: none; }

:focus-visible {
  outline: 3px solid var(--green);
  outline-offset: 3px;
  border-radius: 6px;
}

.wrap {
  width: 100%;
  max-width: calc(var(--wrap) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 100;
  padding: 8px 14px;
  background: var(--ink-deep);
  color: #fff;
  border-radius: 8px;
  text-decoration: none;
}
.skip:focus { top: 12px; }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.site-header { padding-top: env(safe-area-inset-top, 0px); }

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand img { width: 172px; height: auto; }

.nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 32px);
  font-size: 15px;
  font-weight: 500;
}
.nav a {
  text-decoration: none;
  white-space: nowrap;
}
.nav a:not(.nav-cta):hover { color: var(--green-deep); }

.nav-cta {
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  transition: background 0.2s;
}
.nav-cta:hover { background: var(--green-deep); }

/* ---------- common ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.14em;
  color: var(--green-deep);
}
.eyebrow-light { color: #fff; }

/* two-tone "patch" chip — the split head of the logo cat */
.chip {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--green-deep) 50%, var(--green) 50%);
  flex: none;
}
.chip-light { background: linear-gradient(90deg, #fff 50%, rgba(255, 255, 255, 0.55) 50%); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.2s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--green-deep); color: #fff; }
.btn-primary:hover { background: #045A31; }
.btn-ghost { border: 1.5px solid var(--ink); color: var(--ink); }
.btn-ghost:hover { border-color: var(--green-deep); color: var(--green-deep); }

.section { padding-block: clamp(72px, 11vw, 128px); }
.section-alt { background: var(--paper-alt); }

.section-head { margin-bottom: clamp(36px, 5vw, 56px); }
.section-head h2 {
  margin-top: 10px;
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1.4;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.section-lead {
  margin-top: 16px;
  max-width: 40em;
  color: var(--muted);
}

/* ---------- hero ---------- */
.hero {
  padding-block: clamp(40px, 7vw, 96px) clamp(64px, 9vw, 112px);
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  align-items: center;
  gap: clamp(32px, 6vw, 80px);
}
.hero h1 {
  margin-top: 18px;
  font-size: clamp(28px, 4.2vw, 50px);
  line-height: 1.4;
  font-weight: 700;
  letter-spacing: 0.03em;
}
.phrase { display: inline-block; }
.hero .lead {
  margin-top: 24px;
  max-width: 34em;
  color: var(--muted);
  font-size: clamp(15px, 1.6vw, 17px);
  word-break: auto-phrase;
}
.hero-actions {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-visual {
  position: relative;
  aspect-ratio: 1;
  width: 100%;
  max-width: 460px;
  justify-self: end;
}
.patch {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.hero-cat {
  position: absolute;
  left: 50%;
  top: 53%;
  width: 60%;
  transform: translate(-50%, -50%);
  filter: drop-shadow(0 16px 18px rgba(6, 104, 57, 0.18));
  animation: bob 5s ease-in-out infinite;
}
@keyframes bob {
  0%, 100% { transform: translate(-50%, -50%); }
  50% { transform: translate(-50%, calc(-50% - 8px)); }
}

/* ---------- services ---------- */
.services {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 24px);
}
.card {
  display: flex;
  flex-direction: column;
  padding: clamp(24px, 3.2vw, 36px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.card:hover {
  border-color: #CBE6CF;
  box-shadow: 0 12px 32px rgba(35, 31, 32, 0.06);
}
.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.num {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--green);
}
.icon {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.card .icon {
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: 12px;
  background: var(--green-tint);
  color: var(--green-deep);
}
.card h3 {
  margin-top: 20px;
  font-size: clamp(19px, 2vw, 22px);
  line-height: 1.5;
  font-weight: 700;
}
.card p {
  margin-top: 12px;
  color: var(--muted);
  font-size: 15px;
}
.tags {
  margin-top: auto;
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tags li {
  padding: 3px 12px;
  border-radius: 999px;
  background: var(--paper-alt);
  font-size: 13px;
  color: var(--ink);
}

/* ---------- company ---------- */
.company {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 2fr);
  gap: clamp(24px, 5vw, 64px);
}
.profile { border-top: 1px solid var(--line); }
.profile .row {
  display: grid;
  grid-template-columns: 9.5em minmax(0, 1fr);
  gap: 16px;
  padding-block: 22px;
  border-bottom: 1px solid var(--line);
}
.profile dt {
  font-weight: 700;
  font-size: 15px;
}
.profile dd { overflow-wrap: anywhere; }
.profile .sub {
  display: block;
  font-size: 14px;
  color: var(--muted);
}
.profile a {
  color: var(--green-deep);
  text-underline-offset: 3px;
}

/* ---------- contact ---------- */
.contact {
  padding-block: clamp(96px, 12vw, 150px) clamp(72px, 10vw, 120px);
}
.contact-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(28px, 5vw, 64px);
  padding: clamp(40px, 6vw, 72px);
  border-radius: 28px;
  background: var(--green-deep);
  color: #fff;
}
.contact-cat {
  position: absolute;
  z-index: 1;
  right: clamp(32px, 7vw, 96px);
  bottom: calc(100% - 14px);
  width: clamp(88px, 11vw, 120px);
}
.contact h2 {
  margin-top: 10px;
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1.4;
}
.contact-copy p:last-child {
  margin-top: 16px;
  max-width: 30em;
  color: rgba(255, 255, 255, 0.86);
}
.contact-action {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}
.mail {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  max-width: 100%;
  padding: 18px 26px;
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
  font-family: var(--font-en);
  font-weight: 600;
  font-size: clamp(16px, 2.2vw, 20px);
  letter-spacing: 0.02em;
  text-decoration: none;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.16);
  transition: transform 0.2s, box-shadow 0.2s;
}
.mail span { overflow-wrap: anywhere; }
.mail:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}
.mail .icon { color: var(--green-deep); flex: none; }
.copy {
  margin-left: 10px;
  padding: 6px 4px;
  border: 0;
  background: none;
  color: #fff;
  font: inherit;
  font-size: 14px;
  text-decoration: underline;
  text-underline-offset: 4px;
  cursor: pointer;
}
.copy-status {
  min-height: 1.6em;
  margin-left: 14px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.9);
}

/* ---------- footer ---------- */
.site-footer {
  background: var(--ink-deep);
  color: rgba(255, 255, 255, 0.78);
  padding-block: 44px calc(44px + env(safe-area-inset-bottom, 0px));
  font-size: 14px;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px 40px;
}
.footer-inner img { width: 140px; }
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
}
.footer-nav a { text-decoration: none; }
.footer-nav a:hover { color: #fff; }
.copyright {
  margin-left: auto;
  font-family: var(--font-en);
  letter-spacing: 0.06em;
}

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual {
    justify-self: center;
    max-width: 380px;
    order: -1;
  }
  .company { grid-template-columns: 1fr; }
  .company .section-head { margin-bottom: 0; }
  .contact-card { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  :root { --header-h: 64px; }
  .brand img { width: 144px; }
  .nav a:not(.nav-cta) { display: none; }
  .nav-cta { padding: 7px 16px; font-size: 14px; }
  .services { grid-template-columns: 1fr; }
  .hero-visual { max-width: 300px; }
  .profile .row {
    grid-template-columns: 1fr;
    gap: 4px;
    padding-block: 18px;
  }
  .profile dt { font-size: 13px; color: var(--muted); }
  .contact-card { padding: 36px 22px 32px; border-radius: 22px; }
  .contact-action { align-items: stretch; }
  .mail {
    justify-content: center;
    gap: 10px;
    padding: 15px 16px;
    font-size: 15px;
  }
  .mail .icon { width: 22px; height: 22px; }
  .copy { align-self: flex-start; margin-left: 4px; }
  .copyright { margin-left: 0; width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-cat { animation: none; }
  .btn, .mail, .card { transition: none; }
}

/* ---------- 404 ---------- */
.notfound {
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 40px var(--gutter);
  text-align: center;
}
.notfound h1 { font-size: clamp(24px, 4vw, 32px); line-height: 1.5; }
.notfound p:not(.eyebrow) { color: var(--muted); margin-bottom: 12px; }