/* CROSS WAVE demo corporate site — dark modern corporate style */
:root {
  --accent: #1e5a9f;
  --accent-light: #2f74c4;
  --black: #000;
  --dark: #0a0a0a;
  --gray: #888;
  --light-gray: #f5f5f5;
  --white: #fff;
  --font-en: 'Montserrat', sans-serif;
  --font-jp: 'Noto Sans JP', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-jp);
  font-size: 16px;
  line-height: 1.9;
  color: #222;
  background: var(--white);
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ---------- header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 5vw;
  transition: background .3s;
}
.site-header.scrolled { background: rgba(0,0,0,.85); backdrop-filter: blur(6px); }
.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--white);
}
.site-logo img { width: 28px; height: 28px; object-fit: contain; background: var(--white); border-radius: 50%; }
.site-nav ul { display: flex; gap: 32px; }
.site-nav a {
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--white);
  position: relative;
  padding-bottom: 4px;
}
.site-nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--white);
  transition: width .3s;
}
.site-nav a:hover::after, .site-nav a.current::after { width: 100%; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 40px; height: 40px;
  cursor: pointer;
  z-index: 110;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  margin: 6px auto;
  transition: transform .3s, opacity .3s;
}
body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(30,90,159,.45), transparent 60%),
    radial-gradient(ellipse 60% 50% at 20% 85%, rgba(47,116,196,.25), transparent 65%),
    linear-gradient(160deg, #000 0%, #060d18 55%, #0a1626 100%);
  color: var(--white);
  padding: 140px 8vw 100px;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 70% 70% at 60% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 60% 40%, #000 30%, transparent 75%);
}
.hero-inner { position: relative; max-width: 860px; }
.hero-title {
  font-family: var(--font-en);
  font-size: clamp(40px, 7vw, 88px);
  font-weight: 600;
  letter-spacing: .06em;
  line-height: 1.1;
  margin-bottom: 60px;
}
.hero .section-label { color: rgba(255,255,255,.7); }
.hero-mission {
  font-size: clamp(20px, 2.6vw, 30px);
  font-weight: 700;
  line-height: 1.8;
  margin: 16px 0 28px;
}
.hero-desc {
  font-size: 15px;
  color: rgba(255,255,255,.75);
  max-width: 640px;
  margin-bottom: 36px;
}
.scroll-indicator {
  position: absolute;
  right: 5vw; bottom: 40px;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: .3em;
  color: rgba(255,255,255,.6);
  writing-mode: vertical-rl;
}
.scroll-indicator::after {
  content: '';
  display: block;
  width: 1px; height: 56px;
  background: linear-gradient(rgba(255,255,255,.7), transparent);
  margin-top: 12px;
  margin-left: 4px;
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- common ---------- */
.section-label {
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--accent-light);
}
.section-title {
  font-family: var(--font-en);
  font-size: clamp(26px, 4vw, 32px);
  font-weight: 600;
  margin-bottom: 28px;
}
.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  transition: gap .25s;
}
.arrow-link:hover { gap: 12px; }
.arrow-link .arr { font-family: var(--font-en); font-weight: 600; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  transition: background .3s, color .3s;
}
.btn-light { color: var(--white); }
.btn-light:hover { background: var(--white); color: var(--black); }

/* ---------- what we do ---------- */
.whatwedo {
  background: var(--black);
  color: var(--white);
  padding: 110px 8vw;
}
.whatwedo .inner { max-width: 860px; margin: 0 auto; }
.whatwedo .lead {
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 700;
  line-height: 2;
  margin-bottom: 28px;
}
.whatwedo p { color: rgba(255,255,255,.75); font-size: 15px; }

/* ---------- service ---------- */
.service {
  background: var(--white);
  padding: 110px 8vw;
}
.service .head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  max-width: 1080px;
  margin: 0 auto 48px;
}
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  max-width: 1080px;
  margin: 0 auto;
}
.service-card {
  border: 1px solid #e4e4e4;
  border-radius: 12px;
  padding: 0 0 30px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: box-shadow .3s, transform .3s;
  background: var(--white);
  overflow: hidden;
}
.service-card .thumb {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.service-card .thumb-contain {
  object-fit: contain;
  background: #f4f6f9;
  padding: 16px;
  box-sizing: border-box;
}
.service-card h3, .service-card p, .service-card .tag { margin-left: 30px; margin-right: 30px; }
.service-card:hover { box-shadow: 0 12px 32px rgba(0,0,0,.08); transform: translateY(-4px); }
.service-card h3 {
  font-family: var(--font-en);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.4;
}
.service-card p { font-size: 14px; color: #555; flex: 1; }
.service-card .tag {
  align-self: flex-start;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--gray);
  border: 1px solid #ddd;
  border-radius: 999px;
  padding: 3px 14px;
}
.service-card .tag.active { color: var(--accent); border-color: var(--accent); }

/* ---------- cta ---------- */
.cta {
  background: linear-gradient(120deg, var(--accent) 0%, #16406f 100%);
  color: var(--white);
  padding: 90px 8vw;
  text-align: center;
}
.cta h2 {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  margin-bottom: 16px;
}
.cta p { color: rgba(255,255,255,.85); font-size: 15px; margin-bottom: 32px; }

/* ---------- news ---------- */
.news {
  background: var(--light-gray);
  padding: 110px 8vw;
}
.news .head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  max-width: 860px;
  margin: 0 auto 40px;
}
.news-list { max-width: 860px; margin: 0 auto; }
.news-list li { border-bottom: 1px solid #ddd; }
.news-list a,
.news-list .row {
  display: flex;
  gap: 28px;
  align-items: baseline;
  padding: 22px 8px;
  transition: background .2s;
}
.news-list a:hover { background: rgba(30,90,159,.05); }
.news-list time {
  font-family: var(--font-en);
  font-size: 13px;
  color: var(--gray);
  flex-shrink: 0;
}
.news-list .cat {
  flex-shrink: 0;
  font-size: 11px;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 1px 12px;
}
.news-list .ttl { font-size: 14px; }

/* ---------- footer ---------- */
.site-footer {
  background: var(--black);
  color: #aaa;
  padding: 90px 8vw 40px;
}
.footer-contact {
  display: block;
  max-width: 860px;
  margin: 0 auto 70px;
  border: 1px solid #333;
  border-radius: 16px;
  padding: 48px 40px;
  color: var(--white);
  transition: border-color .3s, background .3s;
}
.footer-contact:hover { border-color: var(--accent-light); background: rgba(30,90,159,.12); }
.footer-contact .en {
  font-family: var(--font-en);
  font-size: 26px;
  font-weight: 600;
  display: block;
  margin-bottom: 8px;
}
.footer-nav {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.footer-nav a {
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: .14em;
  color: #ccc;
}
.footer-nav a:hover { color: var(--white); }
.copyright {
  text-align: center;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: .1em;
  color: #666;
}

/* ---------- sub pages ---------- */
.page-hero {
  background:
    radial-gradient(ellipse 70% 80% at 80% 10%, rgba(30,90,159,.4), transparent 60%),
    linear-gradient(160deg, #000 0%, #081120 100%);
  color: var(--white);
  padding: 170px 8vw 90px;
}
.page-hero .en {
  font-family: var(--font-en);
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 600;
  letter-spacing: .04em;
}
.page-hero .jp { font-size: 14px; color: rgba(255,255,255,.7); margin-top: 8px; }

.section { padding: 100px 8vw; }
.section .inner { max-width: 860px; margin: 0 auto; }
.section.alt { background: var(--light-gray); }
.section .lead {
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 700;
  line-height: 2;
  margin-bottom: 24px;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  max-width: 1080px;
  margin: 40px auto 0;
}
.value-card {
  background: var(--white);
  border-radius: 12px;
  padding: 36px 30px;
  border: 1px solid #e8e8e8;
}
.value-card .en {
  font-family: var(--font-en);
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  display: block;
}
.value-card h3 { font-size: 19px; margin: 6px 0 12px; }
.value-card p { font-size: 14px; color: #555; }

.profile { max-width: 860px; margin: 0 auto; }
.profile h3 { font-size: 22px; margin-bottom: 20px; }
.profile dl { display: grid; grid-template-columns: 120px 1fr; gap: 12px 24px; font-size: 14px; }
.profile dt { font-weight: 700; color: var(--accent); }
.profile-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  align-items: start;
  max-width: 860px;
  margin: 0 auto;
}
.profile-grid .photo { width: 100%; border-radius: 12px; }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  max-width: 1080px;
  margin: 0 auto;
}
.split .img { width: 100%; border-radius: 12px; object-fit: cover; aspect-ratio: 4 / 3; }

.empty-note {
  max-width: 860px;
  margin: 0 auto;
  color: var(--gray);
  font-size: 14px;
  padding: 32px 8px;
  border-top: 1px solid #ddd;
  border-bottom: 1px solid #ddd;
}

.about-table { max-width: 860px; margin: 0 auto; width: 100%; border-collapse: collapse; }
.about-table th, .about-table td {
  text-align: left;
  padding: 20px 12px;
  border-bottom: 1px solid #ddd;
  font-size: 14px;
  vertical-align: top;
}
.about-table th { width: 140px; font-weight: 700; }

.shop-card {
  max-width: 860px;
  margin: 32px auto 0;
  background: var(--white);
  border: 1px solid #e4e4e4;
  border-radius: 12px;
  padding: 36px 30px;
}
.shop-card h4 { font-size: 17px; margin-bottom: 8px; }
.shop-card p { font-size: 14px; color: #555; }
.coming-list { max-width: 860px; margin: 0 auto; }
.coming-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #ddd;
  padding: 24px 8px;
}
.coming-list h3 { font-family: var(--font-en); font-size: 19px; font-weight: 600; }
.coming-list .tag {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--gray);
  border: 1px solid #ddd;
  border-radius: 999px;
  padding: 3px 14px;
}

/* ---------- contact form ---------- */
.contact-form {
  max-width: 720px;
  margin: 0 auto;
  display: grid;
  gap: 24px;
}
.contact-form .field label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
}
.contact-form .req {
  display: inline-block;
  font-size: 11px;
  color: var(--white);
  background: var(--accent);
  border-radius: 4px;
  padding: 1px 8px;
  margin-left: 8px;
  vertical-align: 2px;
}
.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid #d5d5d5;
  border-radius: 8px;
  font-family: var(--font-jp);
  font-size: 15px;
  background: var(--white);
  transition: border-color .2s, box-shadow .2s;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(30,90,159,.15);
}
.contact-form textarea { min-height: 180px; resize: vertical; }
.btn-accent {
  color: var(--white);
  background: var(--accent);
  border-color: var(--accent);
  cursor: pointer;
  font-family: var(--font-jp);
  justify-self: center;
}
.btn-accent:hover { background: #16406f; border-color: #16406f; }
.form-note { font-size: 13px; color: var(--gray); text-align: center; }

/* ---------- privacy policy ---------- */
.policy { max-width: 860px; margin: 0 auto; }
.policy .intro { margin-bottom: 8px; }
.policy h2, .policy h3 {
  font-size: 18px;
  margin: 44px 0 14px;
  padding-left: 14px;
  border-left: 4px solid var(--accent);
}
.policy p, .policy li { font-size: 14.5px; color: #333; }
.policy ul { padding-left: 1.5em; list-style: disc; margin: 10px 0; }
.policy .date { margin-top: 48px; color: var(--gray); font-size: 13px; text-align: right; }

/* ---------- appear animation ---------- */
.appear { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s ease; }
.appear.visible { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.95);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s;
  }
  body.nav-open .site-nav { opacity: 1; pointer-events: auto; }
  .site-nav ul { flex-direction: column; text-align: center; gap: 28px; }
  .site-nav a { font-size: 16px; }
  .service .head, .news .head { flex-direction: column; gap: 8px; }
  .profile dl { grid-template-columns: 1fr; gap: 4px; }
  .profile dt { margin-top: 12px; }
  .coming-list li { flex-direction: column; align-items: flex-start; gap: 8px; }
  .footer-contact { padding: 36px 24px; }
  .profile-grid { grid-template-columns: 1fr; gap: 28px; }
  .profile-grid .photo { max-width: 280px; }
  .split { grid-template-columns: 1fr; gap: 28px; }
}