:root {
  --color-bg: #ffffff;
  --color-surface: #f7f9fb;
  --color-surface-strong: #eef3f6;
  --color-text: #0b1728;
  --color-muted: #465565;
  --color-border: rgba(11, 23, 40, 0.12);
  --color-primary: #06284f;
  --color-primary-2: #0a3b75;
  --color-primary-soft: #dbe7ff;
  --color-accent: #caa24b;
  --font-headline: "Manrope", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --container-max: 1180px;
  --nav-height: 76px;
  --radius-card: 24px;
  --radius-button: 999px;
  --shadow-soft: 0 24px 80px rgba(15, 23, 42, 0.08);
  --shadow-card: 0 22px 54px rgba(11,23,40,.10), 0 4px 14px rgba(11,23,40,.05);
  --surface: var(--color-bg);
  --surface-low: var(--color-surface);
  --surface-mid: var(--color-surface-strong);
  --ink: var(--color-text);
  --muted: var(--color-muted);
  --navy: var(--color-primary);
  --navy-2: var(--color-primary-2);
  --blue: #7ca9df;
  --blue-soft: var(--color-primary-soft);
  --gold: var(--color-accent);
  --outline: var(--color-border);
  --shadow: var(--shadow-soft);
  --radius: var(--radius-card);
}
* { box-sizing: border-box; }
html {
  width: 100%;
  overflow-x: hidden;
  scroll-behavior: smooth;
}
body {
  width: 100%;
  overflow-x: hidden;
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.material-symbols-outlined { font-variation-settings: 'FILL' 0, 'wght' 300, 'GRAD' 0, 'opsz' 24; }
.site-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  min-height: var(--nav-height);
  background: rgba(255,255,255,.82);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--outline);
}
.nav-inner {
  width: min(100% - 48px, var(--container-max));
  min-height: var(--nav-height);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.brand { display: flex; align-items: center; gap: .875rem; font-weight: 800; letter-spacing: -.035em; }
.brand-logo {
  display: block;
  width: auto;
  height: 2.5rem;
  object-fit: contain;
}
.brand-mark {
  display: grid; place-items: center;
  width: 2.5rem; height: 2.5rem;
  border-radius: .8rem;
  background: var(--navy);
  color: #fff;
  font: 800 .8rem/1 var(--font-headline);
  box-shadow: 0 10px 28px rgba(15,23,42,.16);
}
.brand-text { font-family: var(--font-headline); font-size: .94rem; }
.nav-menu { display: flex; align-items: center; gap: 1.65rem; }
.nav-menu a { font-size: .86rem; font-weight: 700; color: var(--muted); letter-spacing: -.02em; }
.nav-menu a:hover { color: var(--ink); }
.nav-cta { display: inline-flex; align-items: center; justify-content: center; min-height: 3.35rem; color: #fff !important; background: var(--ink); padding: 0 1.15rem; border-radius: var(--radius-button); box-shadow: 0 10px 28px rgba(15,23,42,.12); }
.nav-toggle { display: none; border: 0; background: transparent; color: var(--ink); }
.snap-container { min-height: 100%; overflow: visible; scroll-snap-type: none; scrollbar-width: none; }
.snap-container::-webkit-scrollbar { display: none; }
.snap-section {
  min-height: 100svh;
  scroll-snap-align: none;
  scroll-snap-stop: normal;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: calc(var(--nav-height) + 32px) 0 96px;
}
.section-inner { width: min(100% - 48px, var(--container-max)); margin: 0 auto; }
.surface-low { background: var(--surface-low); }
.two-col, .services-layout { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(320px, .98fr); gap: clamp(2.5rem, 6vw, 5.75rem); align-items: center; }
.hero {
  min-height: 100svh;
  align-items: center;
  padding: calc(var(--nav-height) + 48px) 0 88px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.68), rgba(255,255,255,.48) 42%, rgba(255,255,255,.76)),
    radial-gradient(circle at 50% 42%, rgba(255,255,255,.26), rgba(255,255,255,0) 54%),
    url("./img/hero_section.png") center / cover no-repeat;
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
}
.hero-copy {
  width: min(100%, 820px);
  text-align: center;
}
.hero-copy h1, .section-copy h2, .center-heading h2, .center-only h2, .final-inner h2 {
  font-family: var(--font-headline);
  letter-spacing: -.05em;
  line-height: 1.02;
  margin: 0;
  font-weight: 800;
}
.hero-copy h1 { font-size: clamp(3rem, 6vw, 5.65rem); line-height: .94; letter-spacing: -.06em; max-width: none; text-wrap: balance; }
.hero-copy h1 span { color: var(--navy-2); }
.hero-copy p, .section-copy p, .center-only p, .final-inner p {
  color: var(--muted);
  font-size: clamp(1rem, 1.2vw, 1.12rem);
  line-height: 1.85;
  max-width: 42rem;
  margin: 1.6rem 0 0;
}
.hero-copy p {
  max-width: 45rem;
  margin-left: auto;
  margin-right: auto;
  color: rgba(11, 23, 40, .72);
  text-shadow: 0 1px 18px rgba(255,255,255,.62);
}
.hero .eyebrow {
  color: rgba(11, 23, 40, .68);
  justify-content: center;
}
.eyebrow, .section-kicker {
  display: inline-flex;
  align-items: center;
  gap: .58rem;
  color: var(--muted);
  font-size: .72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .18em;
  margin-bottom: 1.25rem;
}
.pulse-dot { width: .55rem; height: .55rem; border-radius: 50%; background: var(--navy); animation: pulse 1.8s infinite; }
@keyframes pulse { 0%,100%{opacity:1; transform:scale(1)} 50%{opacity:.35; transform:scale(.8)} }
.hero-actions { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 2.5rem; }
.hero .hero-actions { justify-content: center; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.35rem;
  padding: 0 1.5rem;
  border-radius: var(--radius-button);
  border: 1px solid transparent;
  font-size: .92rem;
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.2;
  text-align: center;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.button:hover { transform: translateY(-1px); box-shadow: 0 16px 42px rgba(15,23,42,.12); }
.button.primary { background: var(--ink); color: #fff; box-shadow: 0 14px 34px rgba(15,23,42,.16); }
.button.secondary { background: var(--surface-low); border: 1px solid var(--outline); color: var(--ink); }
.hero .button.primary { background: var(--navy); color: #fff; box-shadow: 0 18px 48px rgba(6,40,79,.24); }
.hero .button.secondary { background: rgba(255,255,255,.94); border-color: rgba(6,40,79,.22); color: var(--navy); box-shadow: 0 16px 42px rgba(15,23,42,.12); }
.button.inverse { background: #fff; color: var(--ink); box-shadow: 0 14px 34px rgba(15,23,42,.14); }
.button.ghost-light { color: #fff; border: 1px solid rgba(255,255,255,.22); background: rgba(255,255,255,.06); }
.approach-visual { min-height: clamp(330px, 42vh, 410px); position: relative; }
.workflow-board {
  position: absolute;
  inset: 3rem 1rem 2rem 3rem;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  border: 1px solid var(--outline);
}
.image-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.image-visual img {
  display: block;
  width: 100%;
  max-height: clamp(330px, 48vh, 470px);
  object-fit: contain;
}
.scroll-cue { position: absolute; left: 50%; bottom: 1.4rem; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: .25rem; color: rgba(11,23,40,.35); font-size: .62rem; text-transform: uppercase; letter-spacing: .34em; font-weight: 800; }
.section-copy h2, .center-heading h2, .center-only h2 { font-size: clamp(2.2rem, 5vw, 4.4rem); }
.feature-list { display: grid; gap: 1.1rem; }
.feature-item { display: flex; gap: 1.2rem; padding: 1.45rem; border-radius: var(--radius-card); background: rgba(255,255,255,.78); border: 1px solid var(--outline); box-shadow: var(--shadow-card); }
#problem .feature-item {
  background: rgba(255,255,255,.9);
  box-shadow: 0 22px 54px rgba(11,23,40,.12), 0 4px 14px rgba(11,23,40,.06);
}
.feature-item > span { color: var(--navy); font-size: 2rem; }
.feature-item h3, .build-card h3, .service-card h3, .steps h3 { font-family: var(--font-headline); margin: 0 0 .45rem; letter-spacing: -.035em; font-size: clamp(1.15rem, 2vw, 1.5rem); line-height: 1.25; }
.feature-item p, .build-card p, .service-card p, .steps p, details p { margin: 0; color: var(--muted); font-size: .92rem; }
.workflow-board { background: linear-gradient(160deg, #fff, #f3f7fb); padding: 2rem; position: relative; inset: 1rem; }
.workflow-board::before { content:""; position:absolute; left: -2rem; bottom: -2rem; width: 50%; height: 50%; background: rgba(124,169,223,.12); filter: blur(40px); }
.board-header { display:flex; justify-content:space-between; border-bottom:1px solid var(--outline); padding-bottom:1.2rem; margin-bottom:1.2rem; }
.board-header span { height:.65rem; border-radius:999px; background:var(--surface-mid); width: 8rem; }
.board-grid { display:grid; grid-template-columns: repeat(3, 1fr); gap:1rem; }
.board-card { height: 6.8rem; border-radius:1rem; background:#fff; border:1px solid var(--outline); box-shadow: var(--shadow-card); }
.board-card.active { background: linear-gradient(145deg, var(--navy), var(--navy-2)); }
.text-link { display:inline-flex; align-items:center; gap:.25rem; margin-top: 2rem; color: var(--navy); font-weight: 800; }
.center-heading { text-align: center; margin-bottom: 3rem; }
.cards-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.build-card { min-height: clamp(16rem, 28vh, 19rem); padding: clamp(1.45rem, 2.5vw, 2rem); border-radius: var(--radius-card); background: #fff; border: 1px solid var(--outline); box-shadow: var(--shadow-card); }
.build-card.strong { background: var(--navy); color: #fff; transform: translateY(-.55rem); }
.build-card.strong p { color: rgba(255,255,255,.68); }
.build-card > span { font-size: 2.4rem; color: var(--navy); margin-bottom: 3rem; }
.build-card.strong > span { color: #fff; }
.services-layout { grid-template-columns: minmax(0, .78fr) minmax(360px, 1.22fr); }
.section-copy.narrow p { max-width: 34rem; }
.service-stack { display: grid; gap: 1rem; }
.service-card { padding: clamp(1.25rem, 2.2vw, 1.65rem); border-radius: var(--radius-card); background: #fff; border: 1px solid var(--outline); box-shadow: var(--shadow-card); display: flex; justify-content: space-between; align-items: center; gap: 2rem; }
.service-card.available { position: relative; min-height: 11.5rem; padding-bottom: 5.8rem; background: var(--navy); color:#fff; }
.service-card.available p { color: rgba(255,255,255,.68); }
.service-card a { flex: 0 0 auto; background:#fff; color: var(--navy); border-radius:var(--radius-button); padding:.78rem 1.1rem; font-weight:700; font-size:.9rem; box-shadow: 0 10px 28px rgba(15,23,42,.12); }
.service-card.available a {
  position: absolute;
  right: clamp(1.25rem, 2.2vw, 1.65rem);
  bottom: clamp(1.25rem, 2.2vw, 1.65rem);
}
.service-card.muted { opacity: .68; }
.status { display:inline-flex; font-size:.7rem; font-weight:800; color: var(--gold); text-transform:uppercase; letter-spacing:.14em; margin-bottom:.6rem; }
.concept-cta { background: var(--navy); color:#fff; text-align:center; }
.concept-cta::before { content:""; position:absolute; inset:10% 20%; background: radial-gradient(circle, rgba(124,169,223,.22), transparent 56%); filter: blur(60px); }
.final-cta {
  min-height: 100svh;
  align-items: center;
  color: #fff;
  text-align: center;
  padding: calc(var(--nav-height) + 48px) 0 104px;
  background: url("./img/final-cta_section.png") center / cover no-repeat;
}
.center-only, .final-inner { position:relative; z-index:1; max-width: 880px; text-align:center; }
.center-only p { color: rgba(255,255,255,.66); margin-left:auto; margin-right:auto; }
.final-inner p {
  color: rgba(255,255,255,.78);
  margin-left:auto;
  margin-right:auto;
  text-shadow: 0 2px 18px rgba(0,0,0,.22);
}
#concept .center-only .button { margin-top: 2.75rem; }
.light { color: rgba(255,255,255,.55); }
.steps { display:grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: .85rem; }
.steps article { background:#fff; border:1px solid var(--outline); border-radius:var(--radius-card); padding:1.35rem; min-height: 13rem; box-shadow: var(--shadow-card); }
.steps b { display:block; font-family: var(--font-headline); color: rgba(11,23,40,.18); font-size: 2.3rem; margin-bottom: 1.2rem; }
.faq-wrap { max-width: var(--container-max); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .92fr); gap: clamp(2rem, 5vw, 4.5rem); align-items: start; }
.faq-wrap h2 { font-family: var(--font-headline); font-size: clamp(2.2rem, 4.2vw, 3.8rem); line-height: 1.02; letter-spacing: -.05em; margin:0 0 2.2rem; }
.faq-list { display:grid; gap:.8rem; }
details { background:#fff; border:1px solid var(--outline); border-radius:var(--radius-card); padding: 1.2rem 1.4rem; box-shadow: var(--shadow-card); }
#faq details { box-shadow: none; }
summary { cursor:pointer; font-weight:800; font-family: var(--font-headline); letter-spacing:-.03em; }
details p { padding-top: .8rem; }
.company-column h2 { color: var(--navy); }
.company-table {
  width: 100%;
  margin-top: .95rem;
  border-collapse: collapse;
  border-top: 1px solid var(--outline);
  border-bottom: 1px solid var(--outline);
  color: var(--ink);
  font-size: .92rem;
  line-height: 1.55;
}
.company-table th,
.company-table td {
  padding: .78rem .9rem;
  border-top: 1px solid var(--outline);
  text-align: left;
  vertical-align: top;
}
.company-table tr:first-child th,
.company-table tr:first-child td {
  border-top: 0;
}
.company-table th {
  width: 34%;
  color: var(--navy);
  font-weight: 800;
  white-space: nowrap;
}
.company-table td {
  border-left: 1px solid var(--outline);
  color: var(--muted);
}
.company-message {
  width: 100%;
  min-height: 11rem;
  margin-top: .95rem;
  padding: 1rem;
  resize: vertical;
  border: 1px solid var(--outline);
  border-radius: 1rem;
  background: var(--surface-low);
  color: var(--muted);
  font: 500 .92rem/1.75 var(--font-body);
}
.company-message:focus {
  outline: 2px solid rgba(6,40,79,.18);
  outline-offset: 2px;
}
.final-inner h2 { font-size: clamp(3rem, 7.2vw, 6.5rem); }
.final-cta .hero-actions { justify-content: center; }
.final-cta .button { min-height: 3.85rem; padding-inline: 2rem; font-size: 1rem; }
.final-cta .button.inverse { background: var(--ink); color: #fff; box-shadow: 0 10px 28px rgba(15,23,42,.12); }
.final-cta .button.ghost-light { background: rgba(255,255,255,.94); border-color: rgba(6,40,79,.22); color: var(--navy); box-shadow: 0 16px 42px rgba(15,23,42,.12); }
.site-footer { position:absolute; bottom:0; left:0; right:0; display:flex; justify-content:space-between; align-items:center; gap:1rem; padding: 1.8rem clamp(1.25rem, 5vw, 4.5rem); border-top:1px solid rgba(255,255,255,.08); color:rgba(255,255,255,.46); font-size:.72rem; letter-spacing:.12em; text-transform:uppercase; }
.site-footer div { display:flex; gap:1.25rem; }
@media (max-width: 1120px) and (min-width: 901px) {
  .steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .steps article { min-height: 11.5rem; }
  .hero-copy h1 { font-size: clamp(2.75rem, 5vw, 3.8rem); }
  .section-copy h2, .center-heading h2, .center-only h2 { font-size: clamp(2.25rem, 4vw, 3.7rem); }
}
@media (max-width: 900px) {
  .snap-container { height: auto; overflow: visible; scroll-snap-type: none; }
  .snap-section { min-height: auto; padding: calc(var(--nav-height) + 28px) 0 4.75rem; scroll-snap-align: none; overflow: visible; }
  .two-col, .services-layout { grid-template-columns: 1fr; gap: 3rem; }
  .hero { min-height: 100svh; padding: calc(var(--nav-height) + 48px) 0 5rem; }
  .cards-3, .steps { grid-template-columns: 1fr; }
  .build-card.strong { transform:none; }
  .nav-toggle { display:block; }
  .nav-menu { position:absolute; top:100%; left:1rem; right:1rem; display:none; flex-direction:column; align-items:stretch; padding:1rem; background:#fff; border:1px solid var(--outline); border-radius:var(--radius-card); box-shadow:var(--shadow); }
  .nav-menu.is-open { display:flex; }
  .brand-text { display:none; }
  .service-card { flex-direction:column; align-items:flex-start; }
  .faq-wrap { grid-template-columns: 1fr; gap: 3rem; }
  .faq-wrap h2 { margin-bottom: 1.5rem; }
  .site-footer { position:relative; flex-direction:column; }
  .final-cta { min-height: 100svh; padding-bottom: 11rem; align-items: center; }
  .final-cta .site-footer {
    position: absolute;
    bottom: 0;
    flex-direction: column;
    justify-content: center;
    text-align: center;
    padding-block: 1.35rem;
  }
  .final-cta .site-footer div { justify-content: center; }
}
@media (max-width: 560px) {
  :root { --nav-height: 64px; }
  .section-inner { width: min(100% - 32px, 100%); }
  .nav-inner { width: min(100% - 32px, 100%); }
  .hero-copy h1 { font-size: clamp(2.15rem, 10vw, 3rem); line-height: 1; }
  .section-copy h2, .center-heading h2, .center-only h2 { font-size: clamp(2rem, 10vw, 3rem); }
  .final-inner h2 { font-size: clamp(2.55rem, 12vw, 3.55rem); }
  .hero-actions { flex-direction: column; }
  .hero .hero-actions { align-items: stretch; }
  .button { width: 100%; white-space: normal; }
  .brand-logo { height: 2rem; }
  .brand-mark { width:2rem; height:2rem; }
  .service-card:not(.available) a { width: 100%; text-align: center; }
  .site-footer div { flex-wrap: wrap; justify-content: center; }
  .final-cta { padding-bottom: 12.5rem; }
}


/* Revision: keep large Japanese headings controlled on desktop */
.section-copy h2 { max-width: 640px; }
.center-heading h2 { max-width: 780px; margin-left: auto; margin-right: auto; }
@media (min-width: 901px) {
  #problem .section-copy h2 { font-size: clamp(2.7rem, 4.2vw, 4.5rem); line-height: .98; }
  #approach .section-copy h2 { font-size: clamp(2.5rem, 3.65vw, 3.95rem); max-width: 700px; }
  #services .section-copy h2 { font-size: clamp(2.45rem, 3.6vw, 3.9rem); max-width: 620px; }
}