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

:root {
  --primary: #0d3d56;
  --primary-light: #1a6b8a;
  --accent: #2bb3c0;
  --accent-light: #48d8e8;
  --bg: #f0f7f9;
  --bg2: #e4eff3;
  --card: #ffffff;
  --card2: #f8fbfc;
  --text: #1a2e35;
  --muted: #5a7d85;
  --gold: #d4a84b;
  --section-alt: #0d3d56;
  --section-alt2: #0a2f40;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-jp: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;

  --radius: 12px;
  --shadow: 0 4px 24px rgba(13,61,86,0.10);
  --shadow-lg: 0 8px 40px rgba(13,61,86,0.15);

  --max-w: 1200px;
  --nav-h: 68px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.2; color: var(--primary); }

/* ===== NAVIGATION ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(13,61,86,0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
}

.nav-brand {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}

.nav-links a:hover { color: var(--primary); border-bottom-color: var(--accent); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lang-toggle {
  display: flex;
  gap: 4px;
  background: var(--bg2);
  border-radius: 20px;
  padding: 4px;
}

.lang-btn {
  background: none;
  border: none;
  padding: 4px 10px;
  border-radius: 16px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--muted);
  transition: all 0.2s;
}

.lang-btn.active {
  background: var(--primary);
  color: #fff;
}

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.hamburger svg { width: 24px; height: 24px; color: var(--primary); }

/* ===== MOBILE MENU ===== */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(13,61,86,0.5);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.mobile-menu.open { display: block; opacity: 1; pointer-events: all; }

.mobile-panel {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 280px;
  background: #fff;
  padding: 24px;
  transform: translateX(100%);
  transition: transform 0.3s;
}

.mobile-menu.open .mobile-panel { transform: translateX(0); }

.mobile-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.mobile-nav-close { background: none; border: none; cursor: pointer; padding: 8px; }

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mobile-nav-links a {
  display: block;
  padding: 12px 0;
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  border-bottom: 1px solid var(--bg2);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 540px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #06293d 0%, #0d3d56 50%, #0a2f40 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.35;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px 32px;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(43,179,192,0.2);
  border: 1px solid rgba(43,179,192,0.4);
  color: var(--accent-light);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  color: #fff;
  margin-bottom: 16px;
  max-width: 620px;
}

.hero-sub {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.8);
  max-width: 520px;
  margin-bottom: 32px;
  line-height: 1.7;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  padding: 14px 28px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.25s;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(43,179,192,0.35);
}

/* ===== SECTION BASE ===== */
.section {
  padding: 72px 32px;
}

.section-alt { background: var(--card); }
.section-dark { background: var(--section-alt); color: #fff; }
.section-dark h2, .section-dark h3 { color: #fff; }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  margin-bottom: 12px;
}

.section-header p {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ===== INTRO ===== */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.intro-img {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  box-shadow: var(--shadow-lg);
}

.intro-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.intro-text h2 {
  font-size: 2rem;
  margin-bottom: 16px;
}

.intro-text p {
  color: var(--muted);
  line-height: 1.8;
  font-size: 1.05rem;
}

/* ===== ARTICLE CARDS ===== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.article-card {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.article-img {
  aspect-ratio: 16/10;
  overflow: hidden;
}

.article-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

.article-card:hover .article-img img { transform: scale(1.04); }

.article-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-category {
  display: inline-block;
  background: var(--bg2);
  color: var(--primary-light);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: 20px;
  margin-bottom: 12px;
  width: fit-content;
}

.article-title {
  font-size: 1.1rem;
  margin-bottom: 10px;
  line-height: 1.4;
}

.article-excerpt {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
  flex: 1;
  margin-bottom: 16px;
}

.article-expand {
  display: none;
  padding: 16px 24px;
  background: var(--card2);
  border-top: 1px solid var(--bg2);
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
}

.article-expand.open { display: block; }

.article-expand p { margin-bottom: 12px; }
.article-expand p:last-child { margin-bottom: 0; }

.article-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  padding: 0;
  margin-top: auto;
  transition: color 0.2s;
}

.article-toggle:hover { color: var(--primary); }
.toggle-icon { font-size: 0.7rem; transition: transform 0.3s; }
.article-toggle.open .toggle-icon { transform: rotate(180deg); }

/* ===== VISITOR INFO ===== */
.visit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.visit-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
}

.visit-card-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  color: var(--accent-light);
}

.visit-card h3 {
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.visit-card p {
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ===== TIPS GRID ===== */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.tip-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  display: flex;
  gap: 16px;
}

.tip-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent), var(--primary-light));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tip-icon svg { width: 20px; height: 20px; color: #fff; }

.tip-card h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.tip-card p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ===== SEASONAL ===== */
.season-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.season-card {
  border-radius: var(--radius);
  overflow: hidden;
  color: #fff;
  padding: 28px 24px;
  position: relative;
}

.season-card.spring { background: linear-gradient(135deg, #2d6a4f, #52b788); }
.season-card.summer { background: linear-gradient(135deg, #9d4b00, #e07b39); }
.season-card.autumn { background: linear-gradient(135deg, #7f4f24, #b5752a); }
.season-card.winter { background: linear-gradient(135deg, #1b4965, #3a8fb7); }

.season-icon {
  margin-bottom: 16px;
}

.season-icon svg { width: 32px; height: 32px; }

.season-card h3 {
  color: #fff;
  font-size: 1.2rem;
  margin-bottom: 4px;
}

.season-period {
  font-size: 0.8rem;
  opacity: 0.8;
  margin-bottom: 16px;
}

.season-tips { list-style: none; }
.season-tips li {
  font-size: 0.85rem;
  line-height: 1.5;
  margin-bottom: 8px;
  padding-left: 20px;
  position: relative;
}

.season-tips li::before {
  content: url("data:image/svg+xml;utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  position: absolute;
  left: 0;
  top: 1px;
}

/* ===== NEWSLETTER ===== */
.newsletter-inner {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
}

.newsletter-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 28px;
}

.newsletter-input {
  padding: 14px 20px;
  border: 2px solid rgba(255,255,255,0.2);
  border-radius: 30px;
  background: rgba(255,255,255,0.1);
  color: #fff;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}

.newsletter-input::placeholder { color: rgba(255,255,255,0.5); }
.newsletter-input:focus { border-color: var(--accent-light); }

.newsletter-consent {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  text-align: left;
}

.newsletter-consent input[type="checkbox"] {
  margin-top: 3px;
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.newsletter-consent label {
  color: rgba(255,255,255,0.7);
  font-size: 0.82rem;
  line-height: 1.5;
}

.newsletter-success {
  display: none;
  background: rgba(43,179,192,0.2);
  border: 1px solid var(--accent-light);
  border-radius: var(--radius);
  padding: 16px 24px;
  color: #fff;
  margin-top: 16px;
}

.newsletter-success.show { display: block; }

/* ===== FAQ ===== */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  text-align: left;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--primary);
  gap: 16px;
}

.faq-question:hover { background: var(--card2); }

.faq-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--accent);
  transition: transform 0.3s;
}

.faq-item.open .faq-icon { transform: rotate(180deg); }

.faq-answer {
  display: none;
  padding: 0 24px 20px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.75;
}

.faq-item.open .faq-answer { display: block; }

/* ===== FOOTER ===== */
.footer {
  background: var(--primary);
  color: rgba(255,255,255,0.75);
  padding: 60px 32px 32px;
}

.footer-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand-text {
  font-size: 0.88rem;
  line-height: 1.7;
  margin-top: 12px;
  max-width: 280px;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  font-family: var(--font-body);
}

.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a {
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--accent-light); }

.footer-bottom {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copy { font-size: 0.82rem; color: rgba(255,255,255,0.5); }
.footer-disclaimer { font-size: 0.78rem; color: rgba(255,255,255,0.4); max-width: 480px; text-align: right; }

/* ===== SCROLL REVEAL ===== */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .season-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: block; }
  .intro-grid { grid-template-columns: 1fr; }
  .visit-grid { grid-template-columns: 1fr; }
  .tips-grid { grid-template-columns: 1fr; }
  .articles-grid { grid-template-columns: 1fr; }
  .season-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 48px 20px; }
  .hero-content { padding: 60px 20px; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-disclaimer { text-align: left; }
}

/* ===== LEGAL PAGES ===== */
.legal-page { padding-top: 40px; }
.legal-page .section { padding: 48px 32px; }
.legal-content { max-width: 760px; margin: 0 auto; }
.legal-content h2 { font-size: 1.5rem; margin: 40px 0 16px; color: var(--primary); }
.legal-content h2:first-child { margin-top: 0; }
.legal-content p { color: var(--muted); line-height: 1.8; margin-bottom: 16px; font-size: 0.95rem; }
.legal-back { display: inline-flex; align-items: center; gap: 8px; color: var(--accent); text-decoration: none; font-weight: 600; font-size: 0.9rem; margin-bottom: 32px; }
.legal-back:hover { color: var(--primary); }