/* ============================================================
   DAIKEI CORPORATE SITE — style.css
   Design: Engineering-forward, Sharp, Precise
   ============================================================ */

/* ── Custom Properties ─────────────────────────────────────── */
:root {
  /* Brand */
  --red:        #EF3125;
  --red-dark:   #C4251A;
  --red-dim:    rgba(239, 49, 37, 0.12);

  /* Neutrals */
  --black:      #0A0A0A;
  --dark:       #111111;
  --dark-mid:   #1A1A1A;
  --dark-card:  #1E1E1E;
  --gray-800:   #2A2A2A;
  --gray-600:   #444444;
  --gray-400:   #888888;
  --gray-200:   #CCCCCC;
  --gray-100:   #E8E8E8;
  --tinted:     #F4F4F2;
  --white:      #FFFFFF;

  /* Typography */
  --font-body:  'Space Grotesk', 'Noto Sans JP', sans-serif;
  --font-jp:    'Noto Sans JP', sans-serif;
  --font-mono:  'Space Mono', 'Courier New', monospace;

  /* Scale */
  --text-xs:    0.6875rem;    /* 11px */
  --text-sm:    0.8125rem;    /* 13px */
  --text-base:  1rem;         /* 16px */
  --text-md:    1.125rem;     /* 18px */
  --text-lg:    1.375rem;     /* 22px */
  --text-xl:    1.75rem;      /* 28px */
  --text-2xl:   2.25rem;      /* 36px */
  --text-3xl:   3rem;         /* 48px */
  --text-4xl:   4rem;         /* 64px */
  --text-5xl:   5.5rem;       /* 88px */
  --text-6xl:   7.5rem;       /* 120px */

  /* Spacing */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-6:  1.5rem;
  --sp-8:  2rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;
  --sp-32: 8rem;

  /* Layout */
  --container: 1200px;
  --gutter:    clamp(1.25rem, 5vw, 3rem);

  /* Motion */
  --ease-out:     cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out:  cubic-bezier(0.76, 0, 0.24, 1);
  --dur-fast:     0.2s;
  --dur-base:     0.4s;
  --dur-slow:     0.7s;
  --dur-slower:   1.1s;

  /* Nav */
  --nav-h: 64px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--dark);
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
table { border-collapse: collapse; width: 100%; }

/* ── Utilities ──────────────────────────────────────────────── */
.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: clamp(var(--sp-16), 10vw, var(--sp-32));
}

.section--dark   { background: var(--dark); }
.section--tinted { background: var(--tinted); }

.section-label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: var(--sp-4);
}
.section-label--light { color: var(--gray-600); }

.section-title {
  font-family: var(--font-jp);
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--dark);
}
.section-title--light { color: var(--white); }

.section-header {
  margin-bottom: clamp(var(--sp-12), 6vw, var(--sp-20));
}

.required {
  color: var(--red);
  font-family: var(--font-mono);
  font-size: 0.75em;
}

/* ── Scroll Reveal ──────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-out);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.reveal--d1 { transition-delay: 0.12s; }
.reveal--d2 { transition-delay: 0.24s; }
.reveal--d3 { transition-delay: 0.36s; }

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: var(--sp-3) var(--sp-6);
  border: 1.5px solid transparent;
  transition:
    background var(--dur-fast) ease,
    color var(--dur-fast) ease,
    border-color var(--dur-fast) ease,
    transform var(--dur-fast) ease;
  position: relative;
}

.btn--primary {
  background: var(--red);
  color: var(--white);
  border-color: var(--red);
}
.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--red-dark);
  border-color: var(--red-dark);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.35);
}
.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--white);
  transform: translateY(-2px);
}

.btn--wide { width: 100%; justify-content: center; padding-block: var(--sp-4); }

.btn__spinner {
  display: none;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.btn.is-loading .btn__label { opacity: 0.4; }
.btn.is-loading .btn__spinner { display: block; }

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 3px;
}

/* ── HEADER / NAV ────────────────────────────────────────────── */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  z-index: 100;
  transition: background var(--dur-base) ease, box-shadow var(--dur-base) ease;
}
.header.is-scrolled {
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: baseline;
  gap: var(--sp-2);
  text-decoration: none;
}
.nav__logo-jp {
  font-family: var(--font-jp);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--white);
  letter-spacing: -0.02em;
  line-height: 1;
}
.nav__logo-en {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--red);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-8);
}

.nav__link {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  font-weight: 700;
  color: var(--gray-200);
  transition: color var(--dur-fast) ease;
  position: relative;
}
.nav__link::after {
  content: '';
  position: absolute;
  inset: auto 0 -4px 0;
  height: 1px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-base) var(--ease-out);
}
.nav__link:hover,
.nav__link:focus-visible { color: var(--white); }
.nav__link:hover::after  { transform: scaleX(1); }

.nav__link--cta {
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.25);
  padding: var(--sp-2) var(--sp-4);
}
.nav__link--cta::after { display: none; }
.nav__link--cta:hover { border-color: var(--red); color: var(--red); }

.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: 4px;
}
.nav__hamburger-bar {
  display: block;
  height: 1.5px;
  background: var(--white);
  transition: transform var(--dur-base) var(--ease-out), opacity var(--dur-fast) ease;
}
.nav__hamburger[aria-expanded="true"] .nav__hamburger-bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav__hamburger[aria-expanded="true"] .nav__hamburger-bar:nth-child(2) {
  opacity: 0;
}
.nav__hamburger[aria-expanded="true"] .nav__hamburger-bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── HERO ───────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  background: var(--dark);
  display: grid;
  grid-template-rows: 1fr auto;
  overflow: hidden;
  padding-block: var(--nav-h) var(--sp-12);
}

/* Engineering grid background */
.hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.032) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}

/* Red geometric accent */
.hero__bg-accent {
  position: absolute;
  top: -10%;
  right: -5%;
  width: clamp(300px, 45vw, 700px);
  aspect-ratio: 1;
  background: var(--red);
  clip-path: polygon(100% 0, 100% 65%, 55% 100%, 0 55%, 30% 0);
  opacity: 0.06;
  pointer-events: none;
}

.hero__inner {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-block: var(--sp-12);
  position: relative;
  z-index: 1;
}

.hero__meta {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  font-size: var(--text-xs);
  color: var(--gray-400);
  margin-bottom: clamp(var(--sp-8), 4vh, var(--sp-12));
  opacity: 0;
  animation: fadeUp var(--dur-slow) var(--ease-out) 0.3s forwards;
}
.hero__meta-sep {
  display: block;
  width: 32px;
  height: 1px;
  background: var(--gray-600);
}

.hero__headline {
  display: flex;
  flex-direction: column;
  gap: 0.05em;
  margin-bottom: clamp(var(--sp-6), 3vh, var(--sp-8));
}
.hero__headline-line {
  display: block;
  font-family: var(--font-jp);
  font-size: clamp(var(--text-3xl), 7.5vw, var(--text-6xl));
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--white);
  opacity: 0;
  animation: fadeUp var(--dur-slow) var(--ease-out) forwards;
}
.hero__headline-line:nth-child(1) { animation-delay: 0.45s; }
.hero__headline-line:nth-child(2) { animation-delay: 0.58s; }
.hero__headline-line:nth-child(3) { animation-delay: 0.71s; }

.hero__headline-line--red { color: var(--red); }
.hero__headline-line--en {
  font-family: var(--font-mono);
  font-size: clamp(var(--text-xl), 4.5vw, var(--text-4xl));
  font-weight: 700;
  color: var(--gray-600);
  letter-spacing: 0.08em;
}

.hero__copy {
  font-size: clamp(var(--text-base), 1.8vw, var(--text-md));
  color: var(--gray-200);
  line-height: 1.85;
  max-width: 42ch;
  margin-bottom: clamp(var(--sp-8), 4vh, var(--sp-12));
  opacity: 0;
  animation: fadeUp var(--dur-slow) var(--ease-out) 0.85s forwards;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
  opacity: 0;
  animation: fadeUp var(--dur-slow) var(--ease-out) 1s forwards;
}

/* Stats strip */
.hero__stats {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: var(--sp-8);
  padding: var(--sp-6) var(--gutter);
  border-top: 1px solid var(--gray-800);
  max-width: var(--container);
  margin-inline: auto;
  width: 100%;
  opacity: 0;
  animation: fadeUp var(--dur-slow) var(--ease-out) 1.15s forwards;
}
.hero__stat {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}
.hero__stat-num {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1;
}
.hero__stat-num::after {
  content: attr(data-suffix);
  font-size: 0.45em;
  color: var(--red);
  margin-left: 0.15em;
  vertical-align: super;
}
.hero__stat-label {
  font-size: var(--text-xs);
  color: var(--gray-400);
  letter-spacing: 0.1em;
  line-height: 1.4;
}
.hero__stat-divider {
  width: 1px;
  height: 48px;
  background: var(--gray-800);
}

/* Scroll hint */
.hero__scroll {
  position: absolute;
  right: var(--gutter);
  bottom: var(--sp-8);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  opacity: 0;
  animation: fadeIn 1s ease 1.5s forwards;
}
.hero__scroll-text {
  font-size: var(--text-xs);
  color: var(--gray-600);
  writing-mode: vertical-lr;
  letter-spacing: 0.2em;
}
.hero__scroll-track {
  width: 1px;
  height: 48px;
  background: var(--gray-800);
  position: relative;
  overflow: hidden;
}
.hero__scroll-thumb {
  position: absolute;
  inset: 0;
  background: var(--red);
  animation: scrollThumb 2s var(--ease-in-out) infinite;
}

@keyframes scrollThumb {
  0%   { transform: translateY(-100%); }
  50%  { transform: translateY(0); }
  100% { transform: translateY(100%); }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: none; }
}
@keyframes fadeIn {
  to   { opacity: 1; }
}

/* ── VISION ─────────────────────────────────────────────────── */
.vision__layout {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: var(--sp-12);
  margin-bottom: clamp(var(--sp-16), 8vw, var(--sp-24));
  align-items: start;
}

.vision__label-col {
  padding-top: var(--sp-2);
}
.vision__rule {
  width: 1px;
  height: clamp(80px, 12vw, 140px);
  background: linear-gradient(to bottom, var(--red), transparent);
  margin-top: var(--sp-4);
  margin-left: 3px;
}

.vision__headline {
  font-family: var(--font-jp);
  font-size: clamp(var(--text-xl), 3.5vw, var(--text-3xl));
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.02em;
  color: var(--dark);
  margin-bottom: var(--sp-8);
}
.vision__headline em {
  font-style: normal;
  color: var(--red);
}

.vision__body p {
  font-size: var(--text-md);
  color: var(--gray-600);
  line-height: 1.85;
  max-width: 56ch;
}
.vision__body p + p { margin-top: var(--sp-4); }

.vision__pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--gray-100);
  border: 1px solid var(--gray-100);
}

.vision__pillar {
  background: var(--white);
  padding: var(--sp-8) var(--sp-6);
}
.vision__pillar-header {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}
.vision__pillar-num {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--red);
}
.vision__pillar-line {
  flex: 1;
  height: 1px;
  background: var(--gray-100);
}
.vision__pillar-title {
  font-family: var(--font-jp);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--dark);
  margin-bottom: var(--sp-3);
}
.vision__pillar-body {
  font-size: var(--text-sm);
  color: var(--gray-600);
  line-height: 1.7;
}

/* ── SERVICES ───────────────────────────────────────────────── */
.services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--gray-800);
  border: 1px solid var(--gray-800);
}

.service-card {
  background: var(--dark-card);
  padding: clamp(var(--sp-8), 4vw, var(--sp-12));
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
  transition:
    background var(--dur-base) ease,
    opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-out);
}
.service-card:hover { background: var(--dark-mid); }

/* Red top border on hover */
.service-card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-slow) var(--ease-out);
}
.service-card:hover::before { transform: scaleX(1); }


.service-card__index {
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--gray-800);
  line-height: 1;
  user-select: none;
}

.service-card__tag {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--red);
}

.service-card__title {
  font-family: var(--font-jp);
  font-size: clamp(var(--text-xl), 2.5vw, var(--text-2xl));
  font-weight: 700;
  color: var(--white);
  line-height: 1.3;
}

.service-card__desc {
  font-size: var(--text-sm);
  color: var(--gray-400);
  line-height: 1.85;
  flex: 1;
}

.service-card__list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}
.service-card__list li {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-size: var(--text-sm);
  color: var(--gray-200);
}
.service-card__list li::before {
  content: '';
  display: block;
  width: 20px;
  height: 1px;
  background: var(--red);
  flex-shrink: 0;
}

.service-card__footer {
  padding-top: var(--sp-6);
  border-top: 1px solid var(--gray-800);
  margin-top: auto;
}
.service-card__stack {
  font-size: var(--text-xs);
  color: var(--gray-600);
  letter-spacing: 0.1em;
}

/* ── ABOUT ──────────────────────────────────────────────────── */
.about__layout {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: clamp(var(--sp-12), 6vw, var(--sp-20));
  align-items: start;
}

.about__sub {
  margin-top: var(--sp-6);
  font-size: var(--text-base);
  color: var(--gray-400);
  line-height: 1.75;
  max-width: 26ch;
}

.about__table {
  border-top: 1px solid var(--gray-100);
}
.about__row {
  display: grid;
  grid-template-columns: 140px 1fr;
  border-bottom: 1px solid var(--gray-100);
  transition: background var(--dur-fast) ease;
}
.about__row:hover { background: var(--tinted); }

.about__th {
  padding: var(--sp-4) var(--sp-4) var(--sp-4) 0;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--gray-400);
  text-align: left;
  vertical-align: top;
  padding-top: var(--sp-5);
}
.about__td {
  padding: var(--sp-4) 0;
  font-family: var(--font-jp);
  font-size: var(--text-base);
  color: var(--dark);
  line-height: 1.7;
}

/* ── NEWS ───────────────────────────────────────────────────── */
.news__list {
  border-top: 1px solid var(--gray-200);
}
.news__item {
  display: grid;
  grid-template-columns: 120px 110px 1fr auto;
  align-items: center;
  gap: var(--sp-4) var(--sp-6);
  padding: var(--sp-5) 0;
  border-bottom: 1px solid var(--gray-200);
  cursor: pointer;
  transition: background var(--dur-fast) ease;
}
.news__item:hover { background: rgba(239,49,37,0.03); }
.news__item:hover .news__arrow { transform: translateX(4px); color: var(--red); }

.news__date {
  font-size: var(--text-sm);
  color: var(--gray-400);
}
.news__badge {
  display: inline-block;
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--gray-600);
  border: 1px solid var(--gray-200);
  padding: 2px 8px;
}
.news__badge--launch {
  color: var(--red);
  border-color: var(--red);
}
.news__title {
  font-family: var(--font-jp);
  font-size: var(--text-base);
  color: var(--dark);
}
.news__arrow {
  font-size: var(--text-sm);
  color: var(--gray-400);
  transition: transform var(--dur-fast) ease, color var(--dur-fast) ease;
}

/* ── CONTACT ────────────────────────────────────────────────── */
.contact__layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: clamp(var(--sp-12), 6vw, var(--sp-20));
  align-items: start;
}

.contact__sub {
  margin-top: var(--sp-6);
  font-size: var(--text-base);
  color: var(--gray-400);
  line-height: 1.85;
}
.contact__detail {
  margin-top: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}
.contact__detail-label {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--gray-600);
}
.contact__detail-val {
  font-size: var(--text-base);
  color: var(--white);
}

/* Form */
.contact__form { display: flex; flex-direction: column; gap: var(--sp-6); }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-6);
}

.form-group { display: flex; flex-direction: column; gap: var(--sp-2); }

.form-label {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--gray-400);
}

.form-input,
.form-select,
.form-textarea {
  background: var(--dark-card);
  border: 1px solid var(--gray-800);
  color: var(--white);
  font-family: var(--font-body);
  font-size: var(--text-base);
  padding: var(--sp-3) var(--sp-4);
  width: 100%;
  outline: none;
  transition: border-color var(--dur-fast) ease, background var(--dur-fast) ease;
  appearance: none;
  -webkit-appearance: none;
  border-radius: 0;
}
.form-input::placeholder,
.form-textarea::placeholder { color: var(--gray-600); }

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--red);
  background: rgba(239,49,37,0.04);
}
.form-input.is-invalid,
.form-select.is-invalid,
.form-textarea.is-invalid { border-color: #FF5F5F; }

.form-select-wrap { position: relative; }
.form-select-icon {
  position: absolute;
  right: var(--sp-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-600);
  pointer-events: none;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}
.form-select { padding-right: var(--sp-12); }
.form-select option { background: var(--dark-card); }

.form-textarea { resize: vertical; min-height: 140px; }

.form-error {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: #FF5F5F;
  min-height: 1.2em;
  display: block;
}

.form-success {
  display: none;
  padding: var(--sp-6);
  border: 1px solid rgba(50,205,100,0.3);
  background: rgba(50,205,100,0.06);
  text-align: center;
  gap: var(--sp-2);
  flex-direction: column;
}
.form-success[hidden] { display: none !important; }
.form-success:not([hidden]) { display: flex; }
.form-success .mono {
  font-size: var(--text-md);
  color: #32CD64;
}
.form-success p {
  font-size: var(--text-sm);
  color: var(--gray-400);
}

/* ── FOOTER ─────────────────────────────────────────────────── */
.footer {
  background: var(--black);
  border-top: 1px solid var(--gray-800);
}

.footer__inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-12);
  padding-block: clamp(var(--sp-12), 6vw, var(--sp-20));
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}
.footer__logo-jp {
  font-family: var(--font-jp);
  font-size: 2rem;
  font-weight: 900;
  color: var(--white);
  letter-spacing: -0.02em;
  line-height: 1;
}
.footer__logo-en {
  font-size: var(--text-xs);
  color: var(--red);
  letter-spacing: 0.16em;
}
.footer__tagline {
  margin-top: var(--sp-3);
  font-family: var(--font-jp);
  font-size: var(--text-sm);
  color: var(--gray-600);
}

.footer__nav {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  align-items: flex-end;
}
.footer__link {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--gray-600);
  transition: color var(--dur-fast) ease;
}
.footer__link:hover { color: var(--white); }

.footer__bottom {
  border-top: 1px solid var(--gray-800);
}
.footer__bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-block: var(--sp-4);
}
.footer__copy,
.footer__loc {
  font-size: var(--text-xs);
  color: var(--gray-600);
  letter-spacing: 0.1em;
}

/* ── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }

  .nav__links.is-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: var(--nav-h) 0 0 0;
    background: rgba(10,10,10,0.97);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    justify-content: center;
    align-items: center;
    gap: var(--sp-8);
    z-index: 99;
  }
  .nav__links.is-open .nav__link {
    font-size: var(--text-lg);
    letter-spacing: 0.1em;
  }
  .nav__links.is-open .nav__link--cta {
    font-size: var(--text-md);
    padding: var(--sp-3) var(--sp-8);
  }

  .vision__layout {
    grid-template-columns: 1fr;
    gap: var(--sp-6);
  }
  .vision__rule { display: none; }

  .vision__pillars { grid-template-columns: 1fr; }

  .services__grid { grid-template-columns: 1fr; }

  .about__layout { grid-template-columns: 1fr; }
  .about__sub { max-width: none; }

  .news__item {
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
    gap: var(--sp-2) var(--sp-4);
  }
  .news__date { grid-column: 1; grid-row: 1; }
  .news__badge { grid-column: 2; grid-row: 1; justify-self: end; }
  .news__title { grid-column: 1 / -1; grid-row: 2; }
  .news__arrow { display: none; }

  .contact__layout { grid-template-columns: 1fr; }

  .footer__inner { flex-direction: column; gap: var(--sp-8); }
  .footer__nav { align-items: flex-start; flex-direction: row; flex-wrap: wrap; gap: var(--sp-4); }
  .footer__bottom-inner { flex-direction: column; gap: var(--sp-2); text-align: center; }
}

@media (max-width: 600px) {
  :root { --nav-h: 56px; }

  .hero__scroll { display: none; }

  .hero__stats {
    gap: var(--sp-6);
    flex-wrap: wrap;
  }

  .form-row { grid-template-columns: 1fr; }

  .about__row { grid-template-columns: 1fr; }
  .about__th { padding-bottom: 0; border-bottom: none; }
  .about__td { padding-top: var(--sp-1); }
}

/* ── Print ──────────────────────────────────────────────────── */
@media print {
  .header, .hero__scroll, .hero__bg-grid, .hero__bg-accent { display: none; }
  .hero { min-height: auto; padding-top: var(--sp-8); }
  .reveal { opacity: 1; transform: none; }
}