/* ==========================================================
   G TECH JAPAN Corporate Site
   ========================================================== */

:root {
  --red: #e83818;
  --red-deep: #c42d10;
  --ink: #231815;
  --ink-2: #4a423f;
  --ink-3: #7d7471;
  --line: #e4ddd8;
  --paper: #faf8f5;
  --paper-2: #f3efea;
  --white: #ffffff;

  --font-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  --font-serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-en: "Inter", "Helvetica Neue", Arial, sans-serif;

  --container: 1120px;
  --gutter: clamp(20px, 5vw, 48px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.9;
  letter-spacing: 0.02em;
  font-feature-settings: "palt";
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p, dl, dd { margin: 0; }
.pc { display: inline; }
@media (max-width: 760px) { .pc { display: none; } }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

/* ---------- reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(250, 248, 245, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s, background 0.4s;
}
.site-header.is-scrolled {
  border-color: var(--line);
  background: rgba(250, 248, 245, 0.9);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { width: 56px; height: auto; }
.brand-text {
  font-size: 12px;
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.global-nav ul { display: flex; align-items: center; gap: 34px; }
.global-nav a {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.2;
  position: relative;
  padding: 6px 0;
}
.nav-en {
  font-family: var(--font-en);
  font-size: 10px;
  color: var(--red);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 3px;
}
.global-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%; bottom: 0;
  height: 1px;
  background: var(--ink);
  transition: right 0.4s var(--ease);
}
.global-nav a:hover::after { right: 0; }
.nav-cta {
  background: var(--ink);
  color: var(--white) !important;
  padding: 10px 20px !important;
  border-radius: 999px;
  font-size: 13px;
  transition: background 0.3s;
}
.nav-cta::after { display: none; }
.nav-cta:hover { background: var(--red); }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border: 0; background: transparent;
  cursor: pointer;
  position: relative;
  z-index: 110;
}
.nav-toggle span {
  position: absolute;
  left: 10px; right: 10px;
  height: 2px;
  background: var(--ink);
  transition: transform 0.4s var(--ease), top 0.4s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 17px; }
.nav-toggle span:nth-child(2) { top: 26px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { top: 21px; transform: rotate(-45deg); }

@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .global-nav {
    position: fixed;
    inset: 0;
    background: var(--paper);
    padding: 110px var(--gutter) 40px;
    transform: translateY(-100%);
    opacity: 0;
    transition: transform 0.5s var(--ease), opacity 0.4s;
    pointer-events: none;
  }
  .global-nav.is-open { transform: none; opacity: 1; pointer-events: auto; }
  .global-nav ul { flex-direction: column; align-items: flex-start; gap: 22px; }
  .global-nav a { font-size: 20px; font-weight: 500; }
  .nav-en { font-size: 11px; }
  .nav-cta { margin-top: 10px; font-size: 15px !important; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  transition: transform 0.3s var(--ease), background 0.3s, color 0.3s, border-color 0.3s;
}
.btn-primary { background: var(--red); color: var(--white); }
.btn-primary:hover { background: var(--red-deep); transform: translateY(-2px); }
.btn-ghost { border: 1px solid var(--ink); color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--white); transform: translateY(-2px); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: min(100vh, 920px);
  min-height: min(100svh, 920px);
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 140px 0 100px;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-circle {
  position: absolute;
  top: 50%;
  right: -22vw;
  width: min(56vw, 720px);
  height: min(56vw, 720px);
  transform: translateY(-50%);
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #ff6a44 0%, var(--red) 55%, var(--red-deep) 100%);
  animation: heroIn 1.6s var(--ease) both;
}
@keyframes heroIn {
  from { opacity: 0; transform: translateY(-46%) scale(0.92); }
  to   { opacity: 1; transform: translateY(-50%) scale(1); }
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(35, 24, 21, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(35, 24, 21, 0.06) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 90%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 90%);
}
.hero-inner { position: relative; }
.hero-title, .hero-lead { position: relative; }
.hero-title { max-width: 14em; }
.hero-eyebrow {
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.hero-eyebrow::before {
  content: "";
  width: 36px; height: 1px;
  background: var(--red);
}
.hero-title {
  font-size: clamp(34px, 5.2vw, 62px);
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 30px;
}
.hero-title em {
  font-style: normal;
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--red);
}
.hero-lead {
  max-width: 600px;
  font-size: clamp(14px, 1.3vw, 16px);
  color: var(--ink-2);
  margin-bottom: 40px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 60px; }
.hero-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink-3);
}
.hero-meta .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--red); }
.scroll-hint {
  position: absolute;
  left: var(--gutter);
  bottom: 30px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.scroll-hint span {
  width: 40px; height: 1px;
  background: var(--ink-3);
  position: relative;
  overflow: hidden;
}
.scroll-hint span::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--red);
  transform: translateX(-100%);
  animation: lineRun 2.4s var(--ease) infinite;
}
@keyframes lineRun {
  0% { transform: translateX(-100%); }
  50% { transform: translateX(0); }
  100% { transform: translateX(100%); }
}
@media (max-width: 760px) {
  .hero { padding: 120px 0 90px; min-height: auto; }
  .hero-circle {
    top: auto; bottom: -38vw;
    right: -28vw;
    width: 76vw; height: 76vw;
    transform: none;
    opacity: 0.9;
  }
  @keyframes heroIn { from { opacity: 0; } to { opacity: 0.9; } }
  .hero-actions { margin-bottom: 40px; }
  .scroll-hint { display: none; }
}

/* ---------- section common ---------- */
section { position: relative; }
.section-head { margin-bottom: 64px; }
.section-en {
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(26px, 3.2vw, 38px);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.04em;
}
.section-lead {
  margin-top: 18px;
  color: var(--ink-2);
  font-size: 15px;
  max-width: 640px;
}
.section-en.light { color: #ff9c85; }
.section-title.light { color: var(--white); }

/* ---------- intro ---------- */
.intro {
  padding: 120px 0;
  background: var(--white);
  border-top: 1px solid var(--line);
}
.intro-grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
}
.intro-label {
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--red);
  padding-top: 8px;
}
.intro-title {
  font-family: var(--font-serif);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 600;
  line-height: 1.6;
  margin-bottom: 30px;
  letter-spacing: 0.04em;
}
.intro-body p + p { margin-top: 18px; }
.intro-body p { color: var(--ink-2); font-size: 15.5px; max-width: 700px; }
@media (max-width: 760px) {
  .intro { padding: 80px 0; }
  .intro-grid { grid-template-columns: 1fr; gap: 20px; }
}

/* ---------- services ---------- */
.services { padding: 130px 0; }
.service-list { border-top: 1px solid var(--line); }
.service-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 30px;
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.3s;
}
.service-num {
  font-family: var(--font-en);
  font-weight: 300;
  font-size: 40px;
  color: var(--red);
  line-height: 1;
  letter-spacing: -0.02em;
}
.service-body h3 {
  font-size: clamp(19px, 2vw, 23px);
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}
.service-body p { color: var(--ink-2); font-size: 15px; max-width: 760px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.tags li {
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-2);
  background: var(--white);
}
@media (max-width: 760px) {
  .services { padding: 90px 0; }
  .service-item { grid-template-columns: 1fr; gap: 14px; padding: 36px 0; }
  .service-num { font-size: 30px; }
}

/* ---------- approach ---------- */
.approach {
  padding: 130px 0;
  background: var(--ink);
  color: var(--white);
}
.approach .section-en { color: #ff9c85; }
.approach .section-lead { color: rgba(255,255,255,0.7); }
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  counter-reset: step;
}
.step {
  position: relative;
  padding: 36px 28px 40px;
  background: rgba(255,255,255,0.04);
  border-top: 1px solid rgba(255,255,255,0.18);
  transition: background 0.3s;
}
.step:hover { background: rgba(255,255,255,0.08); }
.step-num {
  display: block;
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--red);
  margin-bottom: 26px;
}
.step-num::before { content: "STEP "; }
.step h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: 0.04em;
}
.step p { font-size: 14px; color: rgba(255,255,255,0.72); }
@media (max-width: 900px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .approach { padding: 90px 0; }
  .steps { grid-template-columns: 1fr; }
  .step { padding: 30px 22px 34px; }
}

/* ---------- philosophy ---------- */
.philosophy { padding: 140px 0; background: var(--white); overflow: hidden; }
.philosophy-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 80px;
  align-items: center;
}
.philosophy-visual {
  position: relative;
  aspect-ratio: 1 / 1.15;
  min-height: 320px;
}
.ph-circle {
  position: absolute;
  inset: 8% 10% auto 0;
  width: 78%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #ff6a44 0%, var(--red) 60%, var(--red-deep) 100%);
}
.ph-vertical {
  position: absolute;
  right: 6%;
  top: 0;
  writing-mode: vertical-rl;
  font-family: var(--font-serif);
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: 600;
  letter-spacing: 0.24em;
  line-height: 1;
  color: var(--ink);
  height: 100%;
  padding: 2% 0;
}
.philosophy-body p { color: var(--ink-2); font-size: 15.5px; }
.philosophy-body .section-title { margin-bottom: 28px; }
.philosophy-body p + p { margin-top: 18px; }
.values {
  margin-top: 46px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  border-top: 1px solid var(--line);
  padding-top: 32px;
}
.value-num {
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--red);
  display: block;
  margin-bottom: 10px;
}
.value h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.value p { font-size: 13px; color: var(--ink-3); line-height: 1.7; }
@media (max-width: 900px) {
  .philosophy { padding: 90px 0; }
  .philosophy-grid { grid-template-columns: 1fr; gap: 50px; }
  .philosophy-visual { max-width: 420px; aspect-ratio: auto; min-height: 0; height: 420px; }
  .ph-circle { width: 240px; max-width: 65%; inset: 0 auto auto 0; }
  .ph-vertical { right: 8%; top: 0; height: 100%; font-size: 17px; letter-spacing: 0.18em; padding: 0; line-height: 1; }
}
@media (max-width: 560px) {
  .values { grid-template-columns: 1fr; gap: 20px; }
}

/* ---------- company ---------- */
.company { padding: 130px 0; }
.company-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 60px;
  align-items: start;
}
.company-table { border-top: 1px solid var(--ink); }
.company-table > div {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}
.company-table dt { font-weight: 700; color: var(--ink); letter-spacing: 0.06em; }
.company-table dd { color: var(--ink-2); }
.company-table .sub { font-family: var(--font-en); font-size: 13px; color: var(--ink-3); letter-spacing: 0.04em; }
.company-table a { color: var(--red); border-bottom: 1px solid currentColor; }
.plain-list li { position: relative; padding-left: 16px; }
.plain-list li::before {
  content: "";
  position: absolute; left: 0; top: 13px;
  width: 6px; height: 1px;
  background: var(--red);
}
.aside-card {
  background: var(--ink);
  color: var(--white);
  padding: 40px 36px;
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}
.aside-card::after {
  content: "";
  position: absolute;
  right: -60px; bottom: -60px;
  width: 200px; height: 200px;
  border-radius: 50%;
  background: var(--red);
  opacity: 0.9;
}
.aside-card > * { position: relative; z-index: 1; }
.aside-en {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #ff9c85;
  margin-bottom: 12px;
}
.aside-title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 0.06em;
}
.aside-text { font-size: 13.5px; color: rgba(255,255,255,0.78); }
@media (max-width: 900px) {
  .company { padding: 90px 0; }
  .company-grid { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 560px) {
  .company-table > div { grid-template-columns: 1fr; gap: 6px; padding: 18px 0; }
}

/* ---------- contact ---------- */
.contact {
  padding: 120px 0;
  background: linear-gradient(135deg, var(--red-deep) 0%, var(--red) 60%, #ff5a36 100%);
  color: var(--white);
  overflow: hidden;
}
.contact::before {
  content: "";
  position: absolute;
  left: -10%; top: -40%;
  width: 60vw; height: 60vw;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.18);
}
.contact-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.contact .section-en.light { color: rgba(255,255,255,0.75); }
.contact-text p:not(.section-en) { margin-top: 24px; color: rgba(255,255,255,0.88); font-size: 15px; max-width: 480px; }
.contact-mail {
  display: block;
  background: var(--white);
  color: var(--ink);
  padding: 32px 36px;
  border-radius: 4px;
  transition: transform 0.35s var(--ease), box-shadow 0.35s;
  box-shadow: 0 20px 50px rgba(120, 20, 0, 0.25);
}
.contact-mail:hover { transform: translateY(-4px); box-shadow: 0 30px 60px rgba(120, 20, 0, 0.3); }
.contact-mail-label {
  display: block;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 8px;
}
.contact-mail-addr {
  font-family: var(--font-en);
  font-size: clamp(18px, 2.2vw, 26px);
  font-weight: 500;
  letter-spacing: 0.02em;
  word-break: break-all;
}
.contact-note { margin-top: 16px; font-size: 12.5px; color: rgba(255,255,255,0.8); letter-spacing: 0.04em; }
@media (max-width: 900px) {
  .contact { padding: 90px 0; }
  .contact-inner { grid-template-columns: 1fr; gap: 40px; }
}

/* ---------- footer ---------- */
.site-footer {
  background: var(--paper);
  border-top: 1px solid var(--line);
  padding: 60px 0 30px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
}
.footer-brand { display: flex; align-items: center; gap: 16px; }
.footer-name { font-weight: 700; font-size: 14px; letter-spacing: 0.06em; }
.footer-addr { font-size: 12.5px; color: var(--ink-3); }
.footer-links { display: flex; flex-wrap: wrap; gap: 24px; font-size: 13px; }
.footer-links a { color: var(--ink-2); transition: color 0.3s; }
.footer-links a:hover { color: var(--red); }
.copyright {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-3);
}

/* ---------- sub page (privacy) ---------- */
.subpage { padding: 160px 0 120px; }
.subpage-head { margin-bottom: 60px; padding-bottom: 30px; border-bottom: 1px solid var(--ink); }
.subpage-body { max-width: 760px; }
.subpage-body h2 {
  font-size: 19px;
  font-weight: 700;
  margin: 48px 0 14px;
  padding-left: 16px;
  border-left: 3px solid var(--red);
  line-height: 1.5;
}
.subpage-body h2:first-child { margin-top: 0; }
.subpage-body p, .subpage-body li { font-size: 15px; color: var(--ink-2); }
.subpage-body p + p { margin-top: 12px; }
.subpage-body ul { margin: 12px 0; }
.subpage-body ul li { position: relative; padding-left: 18px; }
.subpage-body ul li::before {
  content: "";
  position: absolute; left: 0; top: 14px;
  width: 8px; height: 1px; background: var(--red);
}
.subpage-date { margin-top: 48px; font-size: 13px; color: var(--ink-3); text-align: right; }
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 60px;
  font-size: 14px;
  color: var(--red);
}
.back-link::before { content: "←"; }