/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f4f6f9;
  --color-surface: #f8f9fb;
  --color-border: rgba(10, 20, 40, 0.1);
  --color-text: #12151c;
  --color-text-dim: rgba(18, 21, 28, 0.66);
  --color-text-faint: rgba(18, 21, 28, 0.42);
  --color-accent: #1450c4;
  --color-accent-soft: rgba(20, 80, 196, 0.08);
  --font-jp: 'Noto Sans JP', sans-serif;
  --font-en: 'Jost', sans-serif;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --container: 1120px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-jp);
  font-weight: 300;
  line-height: 1.9;
  letter-spacing: 0.02em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

.noise-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 22px 0;
  transition: background 0.4s var(--ease), padding 0.4s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}

.header.is-scrolled {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(14px);
  padding: 14px 0;
  border-color: var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  font-family: var(--font-en);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--color-text);
}

.logo__img {
  height: 46px;
  width: auto;
  display: block;
}

.nav {
  display: flex;
  align-items: center;
  gap: 40px;
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav a {
  color: var(--color-text-dim);
  position: relative;
  padding: 4px 0;
  overflow: hidden;
  transition: color 0.3s var(--ease);
}

.nav a > span {
  display: block;
  transition: translate 0.4s var(--ease);
}

/* duplicated label that slides up on hover */
.nav a:hover { color: var(--color-text); }

.nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--color-accent);
  transition: width 0.35s var(--ease);
}

.nav a:hover::after { width: 100%; }

/* current section */
.nav a.is-active { color: var(--color-accent); }
.nav a.is-active::after { width: 100%; }

.nav__cta {
  border: 1px solid var(--color-border);
  padding: 9px 20px !important;
  border-radius: 999px;
  color: var(--color-text) !important;
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease), color 0.35s var(--ease);
}

.nav__cta:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff !important;
}

.nav__cta::after { display: none; }

/* scroll progress */
.header__progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 2px;
  width: 100%;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}

.header.is-scrolled .header__progress { opacity: 1; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px; height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 200;
}

.nav-toggle span {
  display: block;
  height: 1px;
  background: var(--color-text);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

/* ===== Buttons ===== */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 36px;
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 999px;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), color 0.35s var(--ease);
  border: 1px solid transparent;
}

.btn > span { position: relative; z-index: 1; }

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  transform: translateY(101%);
  transition: transform 0.5s var(--ease);
}

.btn:hover::before { transform: translateY(0); }

.btn--primary {
  background: var(--color-accent);
  color: #ffffff;
}

.btn--primary::before { background: #0d3a99; }

.btn--primary:hover { transform: translateY(-2px); }

.btn--outline {
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn--outline::before { background: var(--color-accent); }

.btn--outline:hover {
  border-color: var(--color-accent);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn--full { width: 100%; border: none; }

/* Hero CTA — minimal underline link */
.btn-cta {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 0 4px 16px;
  color: var(--color-text);
  transition: color 0.4s var(--ease), gap 0.4s var(--ease);
}

.btn-cta:hover { color: var(--color-accent); gap: 22px; }

/* base hairline */
.btn-cta::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--color-border);
}

/* accent line that sweeps in */
.btn-cta::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.55s var(--ease);
}

.btn-cta:hover::after { transform: scaleX(1); }

/* label swap */
.btn-cta__text {
  position: relative;
  display: block;
  overflow: hidden;
  line-height: 1.7;
}

.btn-cta__label {
  display: block;
  font-size: 15px;
  letter-spacing: 0.08em;
  white-space: nowrap;
  transition: translate 0.5s var(--ease);
}

.btn-cta__label--ghost {
  position: absolute;
  inset: 0;
  translate: 0 110%;
}

.btn-cta:hover .btn-cta__label { translate: 0 -110%; }
.btn-cta:hover .btn-cta__label--ghost { translate: 0 0; }

.btn-cta__arrow {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.btn-cta:hover .btn-cta__arrow { animation: arrowLoop 0.6s var(--ease); }

@keyframes arrowLoop {
  50%  { translate: 160% 0; opacity: 0; }
  51%  { translate: -160% 0; opacity: 0; }
  100% { translate: 0 0; opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .btn-cta:hover .btn-cta__arrow { animation: none; }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background: var(--color-bg);
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  will-change: transform;
}

.hero__orb--1 {
  width: 52vw; height: 52vw;
  top: -12%; left: -10%;
  background: radial-gradient(circle, rgba(20, 80, 196, 0.5), transparent 66%);
  animation: orbDrift1 9s ease-in-out infinite;
}

.hero__orb--2 {
  width: 46vw; height: 46vw;
  bottom: -16%; right: -10%;
  background: radial-gradient(circle, rgba(43, 130, 220, 0.44), transparent 66%);
  animation: orbDrift2 11s ease-in-out infinite;
}

.hero__orb--3 {
  width: 38vw; height: 38vw;
  top: 26%; left: 40%;
  background: radial-gradient(circle, rgba(15, 40, 120, 0.32), transparent 66%);
  animation: orbDrift3 13s ease-in-out infinite;
}

/* city skyline sitting at the foot of the hero */
.hero__city {
  position: absolute;
  right: 0;
  bottom: 0;
  width: min(62%, 980px);
  height: clamp(240px, 44%, 430px);
  pointer-events: none;
  opacity: 0;
  animation: netFade 2.6s var(--ease) 0.7s forwards;
  /* fade in from the left and soften the tops of the towers */
  mask-image:
    linear-gradient(90deg, transparent, #000 26%),
    linear-gradient(180deg, transparent, #000 26%);
  -webkit-mask-image:
    linear-gradient(90deg, transparent, #000 26%),
    linear-gradient(180deg, transparent, #000 26%);
  mask-composite: intersect;
  -webkit-mask-composite: source-in;
}

.hero__city svg {
  width: 100%;
  height: 100%;
  display: block;
}

.hero__city-reflection {
  opacity: 0.55;
  filter: blur(1.6px);
}

@media (max-width: 860px) {
  .hero__city {
    width: 88%;
    height: clamp(190px, 32%, 300px);
    mask-image:
      linear-gradient(90deg, transparent, #000 16%),
      linear-gradient(180deg, transparent, #000 20%);
    -webkit-mask-image:
      linear-gradient(90deg, transparent, #000 16%),
      linear-gradient(180deg, transparent, #000 20%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero__city { animation: none; opacity: 1; }
}

.hero__net {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  animation: netFade 2.4s var(--ease) 0.5s forwards;
}

@keyframes netFade { to { opacity: 1; } }

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(20, 80, 196, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 80, 196, 0.055) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: radial-gradient(ellipse 75% 65% at 50% 45%, #000 25%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 75% 65% at 50% 45%, #000 25%, transparent 78%);
  opacity: 0;
  animation: netFade 2s var(--ease) 0.3s forwards;
}

@keyframes orbDrift1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%      { transform: translate(28vw, 20vh) scale(1.38); }
  66%      { transform: translate(10vw, 38vh) scale(0.76); }
}

@keyframes orbDrift2 {
  0%, 100% { transform: translate(0, 0) scale(1.1); }
  33%      { transform: translate(-30vw, -16vh) scale(0.72); }
  66%      { transform: translate(-12vw, -34vh) scale(1.34); }
}

@keyframes orbDrift3 {
  0%, 100% { transform: translate(0, 0) scale(0.88); }
  33%      { transform: translate(-24vw, 22vh) scale(1.42); }
  66%      { transform: translate(20vw, -20vh) scale(0.82); }
}

.hero__line {
  display: block;
  overflow: hidden;
}

.hero__anim {
  opacity: 0;
  animation: heroRise 1.1s var(--ease) forwards;
  animation-delay: var(--d, 0s);
}

.hero__line > .hero__anim {
  display: block;
  transform: translateY(100%);
}

.hero__lead.hero__anim,
.hero__actions.hero__anim,
.eyebrow.hero__anim {
  transform: translateY(20px);
}

@keyframes heroRise {
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .hero__orb,
  .hero__net,
  .hero__grid { animation: none; opacity: 1; }
  .hero__anim { opacity: 1; transform: none; animation: none; }
}

.eyebrow__rule {
  display: inline-block;
  width: 0;
  height: 1px;
  margin-right: 14px;
  vertical-align: middle;
  background: var(--color-accent);
  animation: ruleGrow 1s var(--ease) 0.5s forwards;
}

@keyframes ruleGrow { to { width: 46px; } }

.eyebrow {
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 28px;
}

.hero__title {
  font-size: clamp(34px, 5.4vw, 64px);
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: 0.01em;
  margin-bottom: 32px;
}

.hero__title span { display: block; }

.hero__lead {
  max-width: 560px;
  font-size: 16px;
  color: var(--color-text-dim);
  margin-bottom: 44px;
}

.hero__lead-en {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 14px;
  letter-spacing: 0.03em;
  color: var(--color-text-faint);
  margin-bottom: 6px;
}

.hero__actions {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 32px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

.hero__scroll span {
  position: relative;
  width: 1px;
  height: 48px;
  background: var(--color-border);
  overflow: hidden;
}

.hero__scroll span::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(var(--color-accent), transparent);
  animation: scrollTrace 2.2s var(--ease) infinite;
}

@keyframes scrollTrace {
  0%   { transform: translateY(-100%); }
  60%  { transform: translateY(100%); }
  100% { transform: translateY(100%); }
}

/* ===== Sections ===== */
.section { padding: 140px 0; position: relative; }

.section-tag {
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 18px;
}

.section-head { margin-bottom: 64px; max-width: 640px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }

.section-head h2 {
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.5;
}

/* ===== About ===== */
.about { background: var(--color-bg-alt); }

.about__text {
  max-width: 760px;
  font-size: 16px;
  color: var(--color-text-dim);
}

/* naming breakdown: ARC + ATH → ARCATH */
.naming {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  margin-top: 64px;
}

.naming__part {
  display: grid;
  grid-template-columns: 148px 1fr 1.15fr;
  align-items: center;
  gap: 34px;
  padding: 26px 34px;
  border: 1px solid var(--color-border);
  border-radius: 18px;
  background: var(--color-bg);
  box-shadow: 0 10px 30px -24px rgba(16, 32, 64, 0.5);
  opacity: 0;
  translate: 0 22px;
  transition:
    opacity 0.8s var(--ease) calc(var(--i) * 0.16s + 0.15s),
    translate 0.8s var(--ease) calc(var(--i) * 0.16s + 0.15s),
    border-color 0.4s var(--ease),
    box-shadow 0.4s var(--ease);
}

.naming.is-visible .naming__part { opacity: 1; translate: 0 0; }

.naming__part:hover {
  border-color: rgba(20, 80, 196, 0.35);
  box-shadow: 0 20px 44px -26px rgba(20, 80, 196, 0.7);
}

.naming__part--result {
  background: linear-gradient(120deg, rgba(20, 80, 196, 0.06), rgba(20, 80, 196, 0.02));
  border-color: rgba(20, 80, 196, 0.3);
}

.naming__icon {
  display: grid;
  place-items: center;
  width: 100%;
  height: 96px;
}

.naming__icon svg { width: 92px; height: 92px; }

/* middle zone: mark + label, separated by hairlines */
.naming__id {
  padding: 6px 0 6px 34px;
  border-left: 1px solid var(--color-border);
}

.naming__mark {
  display: block;
  font-family: var(--font-en);
  font-size: 34px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  line-height: 1.15;
}

.naming__label {
  display: block;
  margin-top: 10px;
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text);
}

.naming__desc {
  padding-left: 34px;
  border-left: 1px solid var(--color-border);
  font-size: 13.5px;
  line-height: 1.95;
  color: var(--color-text-dim);
}

/* blue circular connector between rows */
.naming__link {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin: -8px auto;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  position: relative;
  z-index: 1;
  box-shadow: 0 6px 16px -6px rgba(20, 80, 196, 0.8);
}

.naming__link svg { width: 17px; height: 17px; }

@media (max-width: 860px) {
  .naming { margin-top: 44px; }

  .naming__part {
    grid-template-columns: 88px 1fr;
    gap: 18px;
    padding: 22px 20px;
  }

  .naming__icon { height: 72px; }
  .naming__icon svg { width: 68px; height: 68px; }

  .naming__id { padding-left: 20px; }
  .naming__mark { font-size: 27px; }

  .naming__desc {
    grid-column: 1 / -1;
    padding-left: 0;
    padding-top: 16px;
    margin-top: 4px;
    border-left: none;
    border-top: 1px solid var(--color-border);
  }

  .naming__desc br { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .naming__part { opacity: 1; translate: 0 0; transition: none; }
}

/* ===== Mission ===== */
.mission {
  position: relative;
  text-align: center;
  overflow: hidden;
  background:
    linear-gradient(180deg, transparent 45%, rgba(159, 199, 243, 0.22) 100%),
    radial-gradient(ellipse 55% 45% at 50% 32%, rgba(20, 80, 196, 0.05), transparent 70%),
    var(--color-bg);
}

/* flowing light at the foot of the section */
.mission__aurora {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: clamp(300px, 52%, 520px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.9;
}

.mission__aurora svg {
  width: 100%;
  height: 100%;
  display: block;
}

.mission__glow {
  transform-origin: 720px 392px;
  animation: glowPulse 6s ease-in-out infinite;
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.85; transform: scale(1); }
  50%      { opacity: 1;    transform: scale(1.1); }
}

/* each ribbon drifts sideways at its own pace */
.mission__silk path {
  animation: silkDrift 14s ease-in-out infinite;
}

.mission__silk path:nth-child(2) { animation-duration: 18s; animation-delay: -3s; }
.mission__silk path:nth-child(3) { animation-duration: 16s; animation-delay: -6s; }
.mission__silk path:nth-child(4) { animation-duration: 21s; animation-delay: -2s; }
.mission__silk path:nth-child(5) { animation-duration: 15s; animation-delay: -8s; }
.mission__silk path:nth-child(6) { animation-duration: 19s; animation-delay: -5s; }
.mission__silk path:nth-child(7) { animation-duration: 23s; animation-delay: -9s; }
.mission__silk path:nth-child(8) { animation-duration: 17s; animation-delay: -4s; }
.mission__silk path:nth-child(9) { animation-duration: 25s; animation-delay: -11s; }

@keyframes silkDrift {
  0%, 100% { transform: translate3d(0, 0, 0); }
  50%      { transform: translate3d(-46px, -10px, 0); }
}

.mission__sparks circle { animation: sparkTwinkle 4s ease-in-out infinite; }

.mission__sparks circle:nth-child(2n)  { animation-duration: 5.5s; animation-delay: -1.2s; }
.mission__sparks circle:nth-child(3n)  { animation-duration: 6.5s; animation-delay: -2.4s; }
.mission__sparks circle:nth-child(5n)  { animation-duration: 4.8s; animation-delay: -3.1s; }

@keyframes sparkTwinkle {
  0%, 100% { opacity: 0.25; }
  50%      { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .mission__glow,
  .mission__silk path,
  .mission__sparks circle { animation: none; }
}

.mission__watermark {
  font-family: var(--font-en);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 400;
  letter-spacing: 0.22em;
  color: var(--color-text);
  opacity: 0.72;
  margin-bottom: 14px;
}

.mission .container { position: relative; z-index: 1; }

.mission__quote {
  font-size: clamp(26px, 4vw, 46px);
  font-weight: 500;
  line-height: 1.55;
  margin: 8px auto 0;
  max-width: 760px;
}

.mission__line {
  display: block;
  overflow: hidden;
}

.mission__line > span {
  display: block;
  translate: 0 105%;
  transition: translate 1s var(--ease);
}

.mission__line--sub > span { transition-delay: 0.14s; }

.section-head.is-visible .mission__line > span { translate: 0 0; }

.mission__line--sub {
  font-size: 0.62em;
  color: var(--color-text-dim);
  margin-top: 10px;
}

.mission__divider {
  position: relative;
  display: block;
  width: 0;
  height: 1px;
  margin: 40px auto;
  background: linear-gradient(90deg, transparent, var(--color-accent) 18%, var(--color-accent) 82%, transparent);
  transition: width 1s var(--ease) 0.45s;
}

.mission__divider::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  translate: -50% -50%;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-accent);
  opacity: 0;
  transition: opacity 0.5s var(--ease) 1.2s;
}

.section-head.is-visible .mission__divider { width: 400px; max-width: 62%; }
.section-head.is-visible .mission__divider::after { opacity: 1; }

.mission__desc {
  max-width: 620px;
  margin: 0 auto;
  color: var(--color-text-dim);
  font-size: 15px;
}

@media (prefers-reduced-motion: reduce) {
  .mission__line > span { translate: 0 0; transition: none; }
  .mission__divider { width: 70px; transition: none; }
}

/* ===== Services ===== */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}

.service-card {
  position: relative;
  background: var(--color-bg);
  padding: 52px 36px 48px;
  overflow: hidden;
  transition: background 0.45s var(--ease), transform 0.45s var(--ease);
}

/* accent bar that grows from the top edge on hover */
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.55s var(--ease);
}

/* oversized ghost number */
.service-card::after {
  content: attr(data-ghost);
  position: absolute;
  right: 18px;
  bottom: -18px;
  font-family: var(--font-en);
  font-size: 130px;
  font-weight: 600;
  line-height: 1;
  color: var(--color-accent);
  opacity: 0.05;
  pointer-events: none;
  transition: opacity 0.45s var(--ease), transform 0.55s var(--ease);
}

.service-card:hover {
  background: var(--color-surface);
  transform: translateY(-4px);
}

.service-card:hover::before { transform: scaleX(1); }

.service-card:hover::after {
  opacity: 0.09;
  transform: translateY(-6px);
}

/* card header: icon left, number + title right */
.service-card__head {
  display: flex;
  align-items: flex-start;
  gap: 22px;
  padding-bottom: 26px;
  margin-bottom: 26px;
  border-bottom: 1px solid var(--color-border);
}

.service-card__heading { flex: 1; min-width: 0; }

.service-card__no {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-en);
  font-size: 26px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 12px;
}

/* rule that extends from the number */
.service-card__no i {
  flex: 1;
  height: 1px;
  background: rgba(20, 80, 196, 0.28);
  scale: 0 1;
  transform-origin: left;
  transition: scale 0.65s var(--ease);
}

.service-card.is-visible .service-card__no i { scale: 1 1; }

.service-card__icon {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 66px;
  height: 66px;
  border-radius: 18px;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  border: 1px solid rgba(20, 80, 196, 0.14);
  transition: background 0.45s var(--ease), color 0.45s var(--ease), transform 0.55s var(--ease);
}

.service-card__icon svg { width: 32px; height: 32px; }

.service-card:hover .service-card__icon {
  background: var(--color-accent);
  color: #fff;
  transform: translateY(-3px) rotate(-6deg);
}

.service-card h3 {
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 6px;
  line-height: 1.5;
}

.service-card__sub {
  font-family: var(--font-en);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  opacity: 0.75;
  margin-bottom: 0;
}

.service-card__text {
  font-size: 14.5px;
  color: var(--color-text-dim);
}

/* itemised lists inside a service card */
.service-detail { margin-top: 30px; }

.service-detail__block + .service-detail__block { margin-top: 26px; }

.service-detail__title {
  position: relative;
  padding-left: 14px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--color-text);
  margin-bottom: 14px;
}

.service-detail__title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 3px;
  height: 0.95em;
  border-radius: 2px;
  background: var(--color-accent);
}

.service-detail__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.service-detail__list li {
  font-size: 13px;
  line-height: 1.5;
  color: var(--color-text-dim);
  padding: 7px 14px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-bg);
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease), background 0.3s var(--ease);
}

.service-card:hover .service-detail__list li { background: transparent; }

.service-detail__list li:hover {
  border-color: rgba(20, 80, 196, 0.4);
  color: var(--color-accent);
}

.service-card__brand {
  height: 64px;
  width: auto;
  margin-top: 28px;
  opacity: 0.92;
}

.service-card__link {
  display: inline-block;
  margin-top: 18px;
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--color-accent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease);
}

.service-card__link:hover { border-color: var(--color-accent); }

.service-card__salon {
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid var(--color-border);
}

.service-card__salon-row {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 13.5px;
}

.service-card__salon-row:last-child { margin-bottom: 0; }

.service-card__salon-row dt {
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
}

.service-card__salon-row dd { color: var(--color-text-dim); }

.service-card__salon-note {
  display: inline-block;
  margin-top: 2px;
  font-size: 12px;
  color: var(--color-text-faint);
}

.service-card__sns {
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid var(--color-border);
}

.sns-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--color-text-dim);
  transition: opacity 0.3s var(--ease);
}

.sns-badge:hover { opacity: 0.8; }

.sns-badge__icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #000;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.sns-badge__icon svg { width: 20px; height: 20px; }

.sns-badge__label {
  font-size: 12px;
  letter-spacing: 0.02em;
}

/* ===== Company ===== */
.company { background: var(--color-bg-alt); }

.company-table { border-top: 1px solid var(--color-border); }

.company-table__row {
  position: relative;
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 24px;
  padding: 26px 18px 26px 4px;
  border-bottom: 1px solid var(--color-border);
  opacity: 0;
  translate: 0 14px;
  transition:
    opacity 0.6s var(--ease) calc(var(--i, 0) * 0.07s),
    translate 0.6s var(--ease) calc(var(--i, 0) * 0.07s);
}

.company-table.is-visible .company-table__row { opacity: 1; translate: 0 0; }

/* hover wash that sweeps in from the left */
.company-table__row::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(20, 80, 196, 0.05), transparent 70%);
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  pointer-events: none;
}

.company-table__row:hover::before { opacity: 1; }

.company-table__row dt {
  position: relative;
  padding-left: 16px;
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--color-text-faint);
  text-transform: uppercase;
  transition: color 0.35s var(--ease);
}

/* accent tick that appears on hover */
.company-table__row dt::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 1px;
  background: var(--color-accent);
  scale: 0 1;
  transform-origin: left;
  transition: scale 0.35s var(--ease);
}

.company-table__row:hover dt { color: var(--color-accent); }
.company-table__row:hover dt::before { scale: 1 1; }

.company-table__row dd { font-size: 15px; color: var(--color-text); }

/* 設立日：他の項目と同じ見た目。区切りのドットだけ色を変える */
.date-en {
  font-variant-numeric: tabular-nums;
}

.date-en span {
  margin: 0 1px;
  color: var(--color-accent);
}

@media (prefers-reduced-motion: reduce) {
  .company-table__row { opacity: 1; translate: 0 0; transition: none; }
}

/* ===== Contact ===== */
.contact__grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 72px;
  align-items: start;
}

.contact__lead {
  color: var(--color-text-dim);
  font-size: 15.5px;
  line-height: 2;
}

.contact__info { margin-top: 40px; }

.contact__info-row {
  padding: 20px 0;
  border-top: 1px solid var(--color-border);
}

.contact__info-row:last-child { border-bottom: 1px solid var(--color-border); }

.contact__info-row dt {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.contact__info-row dd {
  font-size: 14.5px;
  color: var(--color-text);
  line-height: 1.8;
}

.contact__info-row dd a {
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease);
}

.contact__info-row dd a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.contact-form { display: flex; flex-direction: column; gap: 26px; }

/* floating-label field */
.form-row {
  position: relative;
  opacity: 0;
  translate: 0 16px;
  transition:
    opacity 0.6s var(--ease) calc(var(--i, 0) * 0.09s),
    translate 0.6s var(--ease) calc(var(--i, 0) * 0.09s);
}

.contact-form.is-visible .form-row { opacity: 1; translate: 0 0; }

.form-row label {
  position: absolute;
  left: 17px;
  top: 17px;
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--color-text-faint);
  pointer-events: none;
  transform-origin: left top;
  transition: translate 0.3s var(--ease), scale 0.3s var(--ease), color 0.3s var(--ease);
}

.form-row label span { color: var(--color-accent); }

.form-row input,
.form-row textarea {
  width: 100%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 26px 16px 12px;
  color: var(--color-text);
  font-family: var(--font-jp);
  font-size: 15px;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.3s var(--ease);
  resize: vertical;
}

.form-row textarea { padding-top: 30px; }

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  background: var(--color-bg);
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(20, 80, 196, 0.1);
}

/* raise the label when focused or filled */
.form-row input:focus + label,
.form-row textarea:focus + label,
.form-row input:not(:placeholder-shown) + label,
.form-row textarea:not(:placeholder-shown) + label {
  translate: 0 -10px;
  scale: 0.76;
  color: var(--color-accent);
}

/* spam trap — off-screen but not display:none, so bots still fill it */
.form-honey {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-note {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--color-text-dim);
  min-height: 18px;
}

.form-note.is-success { color: var(--color-accent); }
.form-note.is-error { color: #c0392b; }

.contact-form.is-sending { opacity: 0.75; }

.btn--full:disabled { cursor: progress; }

@media (max-width: 860px) {
  .contact__grid { grid-template-columns: 1fr; gap: 48px; }
}

@media (prefers-reduced-motion: reduce) {
  .form-row { opacity: 1; translate: 0 0; transition: none; }
}

/* ===== Footer ===== */
.footer {
  padding: 76px 0 34px;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-alt);
}

.footer__top {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 64px;
  padding-bottom: 54px;
}

.logo--footer { height: 52px; width: auto; opacity: 1; }

.footer__tagline {
  margin-top: 20px;
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.footer__address {
  margin-top: 16px;
  font-size: 13px;
  line-height: 2;
  color: var(--color-text-dim);
}

.footer__nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer__col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__col-title {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: 4px;
}

.footer__col a {
  position: relative;
  width: fit-content;
  font-size: 13.5px;
  color: var(--color-text-dim);
  transition: color 0.3s var(--ease), translate 0.3s var(--ease);
}

.footer__col a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 100%;
  height: 1px;
  background: var(--color-accent);
  scale: 0 1;
  transform-origin: right;
  transition: scale 0.35s var(--ease);
}

.footer__col a:hover {
  color: var(--color-accent);
  translate: 3px 0;
}

.footer__col a:hover::after { scale: 1 1; transform-origin: left; }

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 26px;
  border-top: 1px solid var(--color-border);
}

.footer__copy {
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--color-text-faint);
}

.footer__totop {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  transition: color 0.3s var(--ease);
}

.footer__totop svg {
  width: 16px;
  height: 16px;
  transition: translate 0.35s var(--ease);
}

.footer__totop:hover { color: var(--color-accent); }
.footer__totop:hover svg { translate: 0 -4px; }

@media (max-width: 860px) {
  .footer { padding-top: 56px; }
  .footer__top {
    grid-template-columns: 1fr;
    gap: 44px;
    padding-bottom: 40px;
  }
  .footer__nav { grid-template-columns: 1fr 1fr; gap: 28px; }
}

/* ===== Legal pages ===== */
.legal { padding-top: 160px; }

.legal__inner { max-width: 760px; }

.legal__title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 500;
  margin-bottom: 36px;
}

.legal__lead {
  color: var(--color-text-dim);
  font-size: 15px;
  margin-bottom: 56px;
}

.legal__block { margin-bottom: 44px; }

.legal__block h2 {
  font-size: 18px;
  font-weight: 500;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.legal__block p {
  color: var(--color-text-dim);
  font-size: 15px;
  margin-bottom: 12px;
}

.legal__block ul {
  list-style: none;
  color: var(--color-text-dim);
  font-size: 15px;
}

.legal__block ul li {
  padding-left: 20px;
  position: relative;
  margin-bottom: 10px;
}

.legal__block ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-accent);
}

.legal__date {
  color: var(--color-text-faint);
  font-size: 13px;
  margin-top: 60px;
}

/* ===== Reveal animation ===== */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 0.9s var(--ease) calc(var(--i, 0) * 0.12s),
    transform 0.9s var(--ease) calc(var(--i, 0) * 0.12s);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* section heading: tag slides in, rule draws, title lifts by line */
.section-head .section-tag {
  position: relative;
  padding-left: 0;
  transition: padding-left 0.7s var(--ease) 0.1s;
}

.section-head.is-visible .section-tag { padding-left: 58px; }

.section-head .section-tag::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width 0.7s var(--ease) 0.1s;
}

.section-head.is-visible .section-tag::before { width: 44px; }

.section-head--center .section-tag { padding-left: 0 !important; }
.section-head--center .section-tag::before { display: none; }

.section-head h2 {
  clip-path: inset(0 0 100% 0);
  transform: translateY(18px);
  transition: clip-path 0.95s var(--ease) 0.18s, transform 0.95s var(--ease) 0.18s;
}

.section-head.is-visible h2 {
  clip-path: inset(0 0 -10% 0);
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal],
  [data-reveal].is-visible { opacity: 1; transform: none; transition: none; }
  .section-head h2 { clip-path: none; transform: none; transition: none; }
  .section-head .section-tag,
  .section-head .section-tag::before { transition: none; }
}

/* ===== Responsive ===== */
@media (max-width: 860px) {
  .nav {
    position: fixed;
    inset: 0;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 8px;
    padding: 0 34px;
    background: var(--color-bg);
    font-size: 30px;
    letter-spacing: 0.04em;
    clip-path: circle(0% at calc(100% - 46px) 46px);
    transition: clip-path 0.75s var(--ease);
    pointer-events: none;
  }

  .nav.is-open {
    clip-path: circle(150% at calc(100% - 46px) 46px);
    pointer-events: auto;
  }

  .nav a {
    padding: 12px 0;
    opacity: 0;
    translate: 0 24px;
    transition: opacity 0.5s var(--ease), translate 0.5s var(--ease), color 0.3s var(--ease);
  }

  .nav.is-open a { opacity: 1; translate: 0 0; }
  .nav.is-open a:nth-child(1) { transition-delay: 0.22s; }
  .nav.is-open a:nth-child(2) { transition-delay: 0.29s; }
  .nav.is-open a:nth-child(3) { transition-delay: 0.36s; }
  .nav.is-open a:nth-child(4) { transition-delay: 0.43s; }
  .nav.is-open a:nth-child(5) { transition-delay: 0.5s; }

  .nav a::after { display: none; }

  .nav__cta {
    margin-top: 22px;
    font-size: 15px;
    padding: 13px 30px !important;
  }

  .nav-toggle { display: flex; }
  body.nav-open { overflow: hidden; }
  .nav-toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav-toggle.is-open span:nth-child(2) { opacity: 0; }
  .nav-toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

  .services__grid { grid-template-columns: 1fr; }
  .company-table__row { grid-template-columns: 1fr; gap: 6px; }
  .section { padding: 96px 0; }
  .container { padding: 0 22px; }
}