:root {
  --bg: #f7fcff;
  --bg-soft: #ecf8ff;
  --text: #17384b;
  --text-soft: #587181;
  --primary: #0b5f8f;
  --primary-deep: #07324a;
  --primary-dark: #0b3954;
  --card: #ffffff;
  --line: #d9edf8;
  --white: #ffffff;
  --shadow: 0 20px 60px rgba(8, 58, 90, 0.08);
  --radius-lg: 32px;
  --radius-md: 24px;
  --radius-sm: 18px;
  --container: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
.container { width: min(calc(100% - 32px), var(--container)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(16px);
  background: rgba(11, 57, 84, 0.78);
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.header-inner {
  min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand-sub { color: rgba(255,255,255,0.62); font-size: 11px; letter-spacing: .32em; text-transform: uppercase; margin-bottom: 4px; }
.brand-main { color: var(--white); font-size: 19px; font-weight: 700; letter-spacing: .04em; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
.brand-logo {
  width: 186px;
  max-width: 32vw;
  height: auto;
  display: block;
  filter: drop-shadow(0 8px 22px rgba(0,0,0,.14));
}
.brand-text {
  display: none;
}
.footer-logo-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 24px;
  background: rgba(255,255,255,0.88);
  box-shadow: 0 18px 36px rgba(3,27,43,0.16);
  margin-bottom: 18px;
}
.footer-logo {
  width: min(420px, 100%);
  height: auto;
  display: block;
}
.nav { display: flex; align-items: center; gap: 26px; }
.nav a { color: rgba(255,255,255,0.82); font-size: 14px; transition: .25s ease; }
.nav a:hover, .nav a.active { color: var(--white); }
.nav-toggle {
  display: none; width: 44px; height: 44px; border: 1px solid rgba(255,255,255,0.18);
  border-radius: 999px; background: transparent; color: white; cursor: pointer;
}
.mobile-nav { display: none; border-top: 1px solid rgba(255,255,255,0.1); padding: 12px 0 18px; }
.mobile-nav a { display: block; color: rgba(255,255,255,0.86); padding: 10px 0; font-size: 15px; }
.hero {
  position: relative; min-height: 100vh; padding: 52px 0 60px; color: white; overflow: hidden; background: #0c4667;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(5,38,61,.58), rgba(11,95,143,.34), rgba(128,216,255,.16)); z-index: 1;
}
.hero-slider {
  position: absolute;
  inset: 0;
}
.hero-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: scale(1.06);
  transition: opacity 1.2s ease, transform 6s ease;
}
.hero-slide.active {
  opacity: .34;
  transform: scale(1);
}
.hero-inner {
  position: relative; z-index: 2; display: grid; grid-template-columns: 1.15fr .85fr; gap: 44px; align-items: end; min-height: calc(100vh - 160px);
}
.hero-badge {
  animation: fadeUp .8s ease both;
  display: inline-flex; align-items: center; padding: 10px 16px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.22); background: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.82); font-size: 11px; letter-spacing: .24em; text-transform: uppercase; margin-bottom: 24px;
}
.hero h1 { margin: 0; font-size: clamp(48px, 8vw, 94px); line-height: .95; letter-spacing: -.03em; animation: fadeUp .95s ease both; }
.hero p { max-width: 620px; font-size: 18px; color: rgba(255,255,255,0.84); margin: 26px 0 0; animation: fadeUp 1.1s ease both; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; animation: fadeUp 1.25s ease both; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px;
  border-radius: 999px; font-size: 14px; font-weight: 700; transition: .25s ease; cursor: pointer; border: none;
}
.btn-primary { background: white; color: var(--primary-deep); }
.btn-primary:hover { transform: translateY(-1px); }
.btn-outline { background: transparent; color: white; border: 1px solid rgba(255,255,255,0.22); }
.btn-outline:hover { background: rgba(255,255,255,0.09); }
.hero-card {
  animation: fadeLeft 1s ease both;
  border-radius: 30px; padding: 22px; background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 24px 80px rgba(4,35,56,0.35); backdrop-filter: blur(12px); margin-left: auto; max-width: 430px;
}
.hero-card-head {
  display: flex; justify-content: space-between; align-items: center; gap: 16px; padding-bottom: 18px; margin-bottom: 18px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.hero-card-sub { color: rgba(255,255,255,0.6); text-transform: uppercase; letter-spacing: .28em; font-size: 11px; }
.hero-card-title { font-size: 28px; font-weight: 700; margin-top: 6px; }
.dot { width: 12px; height: 12px; border-radius: 999px; background: #7ed6ff; flex: none; }
.hero-card-list { display: grid; gap: 14px; }
.hero-card-item, .hero-card-note {
  background: rgba(0,0,0,0.14); border-radius: 18px; padding: 14px 16px; color: rgba(255,255,255,0.86); font-size: 14px;
}
.hero-card-item { display: flex; justify-content: space-between; gap: 16px; }
.hero-card-item strong, .hero-card-item a { color: white; font-weight: 700; }
.section, .page-section { padding: 110px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 40px; }
.eyebrow { color: #4d91b8; font-size: 11px; text-transform: uppercase; letter-spacing: .32em; }
h2 { margin: 14px 0 0; color: var(--primary-deep); font-size: clamp(32px, 5vw, 52px); line-height: 1.15; }
.section-link, .simple-link {
  color: var(--primary); text-decoration: underline; text-underline-offset: 4px; font-size: 14px; font-weight: 700;
}
.concept-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 40px; align-items: start; }
.card-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.card { background: var(--card); border-radius: 28px; padding: 32px; box-shadow: var(--shadow); transition: transform .3s ease, box-shadow .3s ease; }
.card:hover, .category-card:hover, .post-card:hover, .menu-card:hover { transform: translateY(-6px); box-shadow: 0 26px 70px rgba(8,58,90,0.12); }
.card.dark { background: #0d5d86; color: white; box-shadow: 0 20px 60px rgba(8,58,90,0.18); }
.card.soft { background: #dff5ff; grid-column: 1 / -1; }
.card-label { font-size: 12px; text-transform: uppercase; letter-spacing: .24em; color: #4d91b8; }
.card.dark .card-label { color: rgba(255,255,255,0.6); }
.card.soft .card-label { color: #3d7da3; }
.card p { margin: 16px 0 0; color: #416072; }
.card.dark p { color: rgba(255,255,255,0.82); }
.card.soft p { color: #365567; }
.category-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; }
.category-card { background: white; border-radius: 28px; padding: 24px; box-shadow: 0 20px 50px rgba(8,58,90,0.06); transition: transform .3s ease, box-shadow .3s ease; }
.category-card img, .menu-card img, .concept-image img, .wide-image {
  width: 100%; object-fit: cover; border-radius: 20px;
}
.category-card img { height: 160px; }
.category-card .label, .menu-block .label {
  margin-top: 18px; font-size: 11px; text-transform: uppercase; letter-spacing: .28em; color: #65a9cd;
}
.category-card h3, .menu-block h3, .info-panel h3, .post-card h3, .article h1, .concept-text h3, .contact-panel h3 {
  color: var(--primary-deep); margin: 12px 0 0;
}
.category-card h3 { font-size: 24px; }
.category-card p { margin: 12px 0 0; color: #537180; font-size: 14px; }
.news-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 24px; }
.info-panel { background: #0d5d86; color: white; border-radius: 30px; padding: 32px; }
.info-panel .eyebrow { color: rgba(255,255,255,0.6); }
.info-panel h3 { color: white; font-size: 34px; }
.info-panel p { color: rgba(255,255,255,0.82); margin-top: 16px; }
.post-list, .blog-list-page { display: grid; gap: 16px; }
.post-card {
  width: 100%; text-align: left; background: white; border: 1px solid var(--line); border-radius: 24px;
  padding: 24px; box-shadow: 0 20px 50px rgba(8,58,90,0.05); transition: transform .3s ease, box-shadow .3s ease;
}
.post-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 14px; color: #5d8ba3; }
.pill {
  display: inline-flex; align-items: center; height: 28px; padding: 0 12px; border-radius: 999px;
  background: #ecf8ff; color: var(--primary); font-size: 12px; font-weight: 700;
}
.post-card p, .menu-intro, .concept-intro, .contact-intro, .blog-intro { margin-top: 12px; color: var(--text-soft); }
.menu-stack { display: grid; gap: 26px; margin-top: 32px; }

.menu-tabs {
  top: 94px;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(10px);
  box-shadow: 0 16px 40px rgba(8,58,90,0.06);
}
.menu-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid #cfe8f5;
  background: white;
  color: var(--primary);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: .2s ease;
}
.menu-tab:hover,
.menu-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}
.menu-block.is-hidden { display: none; }

.menu-block { background: white; border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow); }
.menu-grid { margin-top: 28px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.menu-card { overflow: hidden; border-radius: var(--radius-md); background: #f4fbff; transition: transform .3s ease, box-shadow .3s ease; }
.menu-card img { height: 220px; }
.menu-card-body { padding: 24px; }
.menu-card-head { display: flex; flex-direction: column; gap: 8px; align-items: start; }
.menu-card h4 { margin: 0; font-size: 22px; color: var(--primary-deep); }
.menu-card-price { white-space: normal; color: var(--primary); font-size: 14px; font-weight: 700; }
.menu-card p { margin: 12px 0 0; color: #5e7b89; }
.concept-layout { display: grid; grid-template-columns: 1fr .95fr; gap: 28px; margin-top: 40px; }
.concept-text { background: white; border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow); }
.concept-text p { color: #577282; margin-top: 18px; }
.concept-image { overflow: hidden; border-radius: var(--radius-lg); }
.concept-image img { height: 100%; min-height: 420px; }
.contact-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 28px; margin-top: 40px; }
.contact-panel { background: #0d5d86; color: white; border-radius: var(--radius-lg); padding: 32px; }
.contact-panel h3 { color: white; margin-top: 0; }
.contact-panel p, .contact-panel .contact-info { color: rgba(255,255,255,0.84); }
.contact-info { margin-top: 28px; display: grid; gap: 10px; font-size: 14px; }
.contact-info a, .footer-card a { text-decoration: underline; text-underline-offset: 4px; }
.contact-form { background: white; border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow); }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.field.full { grid-column: 1 / -1; }
.field label { display: block; margin-bottom: 8px; font-size: 14px; font-weight: 700; color: var(--primary-deep); }
.field input, .field textarea {
  width: 100%; border: 1px solid #d7ebf5; border-radius: 18px; padding: 14px 16px; background: white; outline: none;
}
.field textarea { resize: vertical; min-height: 180px; }
.article-back { color: var(--primary); font-size: 14px; font-weight: 700; text-decoration: underline; text-underline-offset: 4px; }
.article {
  margin-top: 30px; background: white; border-radius: var(--radius-lg); padding: 34px; box-shadow: var(--shadow);
}
.article h1 { font-size: clamp(32px, 5vw, 54px); line-height: 1.15; }
.article hr { border: none; height: 1px; background: #e0eff7; margin: 28px 0; }
.article-body { display: grid; gap: 18px; color: #537180; }
.site-footer { position: relative; overflow: hidden; color: white; }
.site-footer img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
}
.site-footer::before {
  content: ""; position: absolute; inset: 0; background: rgba(6,39,63,0.7); z-index: 1;
}
.footer-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.2fr .8fr; gap: 28px; padding: 64px 0; }
.footer-copy .eyebrow { color: rgba(255,255,255,0.6); }
.footer-copy h3 { margin: 14px 0 0; font-size: 38px; color: white; line-height: 1.2; }
.footer-copy p { color: rgba(255,255,255,0.82); max-width: 780px; }
.footer-card {
  border-radius: 28px; padding: 28px; border: 1px solid rgba(255,255,255,0.15); background: rgba(255,255,255,0.1);
  backdrop-filter: blur(8px); display: grid; gap: 10px; font-size: 14px; color: rgba(255,255,255,0.88);
}
.mt-40 { margin-top: 40px; }
.footer-bottom {
  position: relative;
  z-index: 2;
  border-top: 1px solid rgba(255,255,255,0.14);
}
.footer-bottom-inner {
  padding: 18px 0 26px;
  color: rgba(255,255,255,0.78);
  font-size: 13px;
  letter-spacing: .04em;
}
.reveal { opacity: 1; transform: translateY(0); }
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.is-visible { opacity: 1; transform: translateY(0); }
.float-soft { animation: floatSoft 6s ease-in-out infinite; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeLeft {
  from { opacity: 0; transform: translateX(28px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes floatSoft {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@media (max-width: 1100px) {
  .hero-inner, .concept-grid, .news-grid, .concept-layout, .contact-layout, .footer-inner { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 860px) {
  .nav { display: none; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .mobile-nav.open { display: block; }
  .hero { min-height: auto; }
  .hero-inner { min-height: auto; }
  .card-grid-2, .form-grid, .category-grid { grid-template-columns: 1fr 1fr; }
  .menu-grid { grid-template-columns: 1fr 1fr; }
  .menu-tabs { top: 86px; }
  .section, .page-section { padding: 94px 0; }
  .section-head { align-items: start; flex-direction: column; }
}
@media (max-width: 640px) {
  .container { width: min(calc(100% - 24px), var(--container)); }
  .header-inner { min-height: 72px; }
  .brand-logo { width: 148px; max-width: 56vw; }
  .brand-main { font-size: 16px; }
  .hero h1 { font-size: 46px; }
  .hero p { font-size: 16px; }
  .hero-card-title { font-size: 24px; }
  .card-grid-2, .form-grid, .category-grid { grid-template-columns: 1fr; }
  .menu-grid { grid-template-columns: 1fr; }
  .card, .menu-block, .contact-panel, .contact-form, .article, .concept-text, .info-panel, .post-card, .category-card { padding: 24px; }
  .menu-card-body { padding: 20px; }
  .menu-card h4 { font-size: 19px; }
  .footer-copy h3 { font-size: 31px; }
}

/* menu page animation: safe fallback */
.menu-animate .menu-tabs {
  animation: menuTabsIn .6s ease both;
}
.js .menu-animate .menu-block {
  opacity: 1;
  transform: translateY(0);
}
.js .menu-animate .menu-block.menu-ready {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .55s ease, transform .55s ease;
}
.js .menu-animate .menu-block.menu-inview {
  opacity: 1;
  transform: translateY(0);
}
.menu-animate .menu-card {
  transform-origin: center bottom;
}
.js .menu-animate .menu-card.card-ready {
  opacity: 0;
  transform: translateY(18px) scale(.985);
  transition: opacity .45s ease, transform .45s ease, box-shadow .3s ease;
}
.js .menu-animate .menu-card.card-inview {
  opacity: 1;
  transform: translateY(0) scale(1);
}
.menu-animate .menu-tab {
  transition: transform .2s ease, background .2s ease, border-color .2s ease, color .2s ease, box-shadow .2s ease;
}
.menu-animate .menu-tab:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(11,95,143,0.14);
}
.menu-animate .menu-tab.active {
  box-shadow: 0 12px 24px rgba(11,95,143,0.22);
}
.menu-animate .menu-card img {
  transition: transform .7s ease;
}
.menu-animate .menu-card:hover img {
  transform: scale(1.045);
}
@keyframes menuTabsIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .menu-animate .menu-tabs,
  .menu-animate .menu-block,
  .menu-animate .menu-card,
  .menu-animate .menu-card img,
  .menu-animate .menu-tab {
    animation: none !important;
    transition: none !important;
    transform: none !important;
    opacity: 1 !important;
  }
}


.section-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 14px 28px rgba(11,95,143,0.18);
}
.section-button:hover { transform: translateY(-1px); }
.card.has-bg,
.category-card.has-bg {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.card.has-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: -2;
  transform: scale(1.02);
}
.card.has-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5,27,40,0.18), rgba(5,27,40,0.64));
  z-index: -1;
}
.card.has-bg .card-label,
.card.has-bg p { color: rgba(255,255,255,0.92) !important; }
.card.has-bg p { max-width: 26rem; }
.card.bg-aquarium::before { background-image: url("img-hero/sea-sunny-season03.jpg"); }
.card.bg-cuisine::before { background-image: url("img-hero/sea-sunny-season02.jpg"); }
.card.bg-ocean::before { background-image: url("img-hero/sea-sunny-season01.jpg"); }
.concept-slider {
  position: relative;
  min-height: 420px;
  overflow: hidden;
  border-radius: var(--radius-lg);
}
.concept-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.1s ease;
}
.concept-slide.active { opacity: 1; }

.card:hover,
.category-card:hover {
  transform: none;
  box-shadow: 0 20px 50px rgba(8,58,90,0.06);
}
.category-card,
.card {
  transition: box-shadow .3s ease;
}
@media (max-width: 860px) {
  .section-button { min-height: 44px; }
}

.hero-title-sm { font-size: clamp(38px, 6vw, 72px) !important; line-height: 1.08; }
.concept-title-sm { font-size: clamp(28px, 4.2vw, 44px) !important; }
@media (max-width: 640px) { .hero-title-sm { font-size: 38px !important; } .concept-title-sm { font-size: 28px !important; } }