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

:root {
  --bg: #0B1D2E;
  --bg-alt: #0F2840;
  --bg-card: #112842;
  --surface: #163354;
  --amber: #E8A838;
  --amber-dim: rgba(232, 168, 56, 0.12);
  --cream: #F8F6F1;
  --text-primary: #F8F6F1;
  --text-secondary: #8D99AE;
  --text-muted: #5C7394;
  --border: rgba(232, 168, 56, 0.15);
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Plus Jakarta Sans', 'Noto Sans JP', -apple-system, sans-serif;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

/* ===== NAVIGATION ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 40px;
  backdrop-filter: blur(12px);
  background: rgba(11, 29, 46, 0.85);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s;
  letter-spacing: 0.01em;
}

.nav-links a:hover { color: var(--amber); }

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 100px 40px 60px;
  position: relative;
  background: var(--bg);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(232,168,56,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  width: 100%;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
  color: var(--amber);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow-line {
  display: block;
  width: 32px;
  height: 1px;
  background: var(--amber);
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 5vw, 4.2rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 28px;
}

.hero-headline em {
  font-style: italic;
  color: var(--amber);
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 420px;
}

/* Hero card - paper transformation visual */
.hero-right {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
}

.paper-card-label, .plain-card-label {
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.paper-dense {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.paper-line {
  height: 6px;
  background: var(--surface);
  border-radius: 3px;
  width: 100%;
}

.paper-line.short { width: 60%; }
.paper-line.medium { width: 80%; }

.paper-formula {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 4px;
  letter-spacing: 0.05em;
  font-family: 'Courier New', monospace;
}

.arrow-block {
  display: flex;
  align-items: center;
  justify-content: center;
}

.paper-plain {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.plain-heading {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--amber);
  margin-bottom: 4px;
}

.plain-line {
  height: 8px;
  background: rgba(232, 168, 56, 0.25);
  border-radius: 4px;
  width: 100%;
}

.plain-line.short { width: 55%; }

/* Hero stats */
.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.stat {
  flex: 1;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--amber);
  line-height: 1;
}

.stat-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: var(--border);
}

.hero-scroll-cue {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 60px;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* ===== MANIFESTO ===== */
.manifesto {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 80px 40px;
}

.manifesto-inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.manifesto-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 28px;
}

.manifesto-quote {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.5vw, 1.7rem);
  font-style: italic;
  font-weight: 400;
  line-height: 1.5;
  color: var(--text-primary);
  margin-bottom: 28px;
  position: relative;
}

.manifesto-body {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
}

.manifesto-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.tag {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ===== FEATURES ===== */
.features {
  padding: 100px 40px;
  background: var(--bg);
}

.features-header {
  max-width: 1200px;
  margin: 0 auto 64px;
}

.section-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  max-width: 560px;
}

.features-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}

.feature-card {
  background: var(--bg-card);
  padding: 40px 36px;
  border-right: 1px solid var(--border);
  position: relative;
}

.feature-card:last-child { border-right: none; }

.feature-num {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--amber-dim);
  line-height: 1;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}

.feature-icon {
  margin-bottom: 20px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.features-delivery {
  max-width: 1200px;
  margin: 40px auto 0;
  display: flex;
  gap: 40px;
  justify-content: center;
  flex-wrap: wrap;
}

.delivery-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
}

/* ===== ARCHIVE ===== */
.archive {
  padding: 100px 40px;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}

.archive-header {
  max-width: 1200px;
  margin: 0 auto 56px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.archive-header .section-label {
  width: 100%;
}

.archive-view-all {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--amber);
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.2s;
}

.archive-view-all:hover { opacity: 0.75; }

.archive-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.archive-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.2s, transform 0.2s;
}

.archive-card:hover {
  border-color: var(--amber);
  transform: translateY(-2px);
}

.archive-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.archive-tag {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
  background: var(--amber-dim);
  padding: 4px 10px;
  border-radius: 100px;
}

.archive-date {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.archive-card-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.archive-card-excerpt {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.archive-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  margin-top: 4px;
}

.read-time {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.read-link {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--amber);
}

/* ===== CLOSING ===== */
.closing {
  padding: 120px 40px;
  background: var(--bg);
  text-align: center;
}

.closing-inner {
  max-width: 800px;
  margin: 0 auto;
}

.closing-accent-line {
  width: 48px;
  height: 3px;
  background: var(--amber);
  border-radius: 2px;
  margin: 0 auto 48px;
}

.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 28px;
}

.closing-headline em {
  font-style: italic;
  color: var(--amber);
}

.closing-body {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 48px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.closing-promise {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
}

.promise-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 48px 40px 32px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 32px;
}

.footer-brand { display: flex; flex-direction: column; gap: 8px; }

.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
}

.footer-tagline {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 28px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--amber); }

.footer-social a {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 500;
  transition: color 0.2s;
}

.footer-social a:hover { color: var(--amber); }

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-right { order: -1; }

  .features-grid,
  .archive-grid {
    grid-template-columns: 1fr;
  }

  .feature-card { border-right: none; border-bottom: 1px solid var(--border); }
  .feature-card:last-child { border-bottom: none; }

  .nav { padding: 0 24px; }
  .hero { padding: 100px 24px 60px; }
  .manifesto, .features, .archive, .closing { padding: 80px 24px; }
  .footer { padding: 48px 24px 32px; }
}

/* ===== ARTICLE PAGE ===== */
.article-page {
  max-width: 720px;
  margin: 0 auto;
  padding: 120px 40px 80px;
}

.article-header { margin-bottom: 40px; }

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.article-date,
.article-read-time {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.article-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.article-excerpt {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  font-weight: 400;
}

.article-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 48px 0;
}

/* Article body typography */
.article-body {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--text-primary);
}

.article-body p {
  margin-bottom: 1.4em;
}

.article-body p.article-lead {
  font-size: 1.2rem;
  color: var(--text-secondary);
  font-style: italic;
  line-height: 1.65;
  margin-bottom: 1.8em;
}

.article-body h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 2em 0 0.75em;
  letter-spacing: -0.02em;
}

.article-body strong {
  font-weight: 700;
  color: var(--text-primary);
}

.article-body ul, .article-body ol {
  margin: 1em 0 1.4em 1.5em;
}

.article-body li {
  margin-bottom: 0.5em;
  color: var(--text-secondary);
}

/* ===== SUBSCRIBE SECTION ===== */
.subscribe-section {
  padding: 56px 0 0;
}

.subscribe-headline {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.subscribe-sub {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.subscribe-form {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  max-width: 500px;
}

.subscribe-input {
  flex: 1;
  min-width: 220px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-card);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
}

.subscribe-input:focus {
  border-color: var(--amber);
}

.subscribe-input::placeholder {
  color: var(--text-muted);
}

.subscribe-btn {
  padding: 12px 24px;
  background: var(--amber);
  color: var(--bg);
  border: none;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s;
  white-space: nowrap;
}

.subscribe-btn:hover:not(:disabled) { opacity: 0.85; }
.subscribe-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.subscribe-note {
  font-size: 0.85rem;
  margin-top: 12px;
  color: var(--text-secondary);
}
.subscribe-note.success { color: var(--amber); }
.subscribe-note.error { color: #e05555; }

/* ===== RECENT ARTICLES ===== */
.article-recent {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 80px 40px;
}

.recent-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.recent-inner .section-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 24px;
}

.recent-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

/* ===== ERROR PAGES ===== */
.error-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 40px;
  text-align: center;
}

.error-code {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 900;
  color: var(--text-secondary);
  line-height: 1;
}

.error-msg {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 360px;
}

.btn-home {
  display: inline-block;
  margin-top: 16px;
  padding: 10px 20px;
  background: var(--amber);
  color: var(--bg);
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none;
}

.confirm-check {
  font-size: 3rem;
  line-height: 1;
  margin-bottom: 8px;
}

@media (max-width: 600px) {
  .article-page { padding: 100px 24px 60px; }
  .article-recent { padding: 60px 24px; }
  .subscribe-form { flex-direction: column; }
  .subscribe-input, .subscribe-btn { width: 100%; }
  .recent-grid { grid-template-columns: 1fr; }
}

/* ===== LANGUAGE SWITCHER ===== */
.lang-switch {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border: 1px solid var(--amber);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--amber) !important;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
  letter-spacing: 0.02em;
}

.lang-switch:hover {
  background: var(--amber);
  color: var(--bg) !important;
}

/* Japanese font overrides — ensures CJK renders well */
html[lang="ja"] {
  word-break: normal;
  overflow-wrap: anywhere;
}

html[lang="ja"] .hero-headline {
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  line-height: 1.25;
}

html[lang="ja"] .closing-headline {
  font-size: clamp(1.6rem, 3.5vw, 2.6rem);
  line-height: 1.3;
}

/* ===== ARCHIVE PAGE ===== */
.archive-page {
  padding-top: 64px;
}

.archive-page-header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 72px 40px 56px;
}

.archive-page-header-inner {
  max-width: 720px;
  margin: 0 auto;
}

.archive-page-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 12px;
}

.archive-page-sub {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.archive-page-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 40px 80px;
}

.archive-list {
  display: flex;
  flex-direction: column;
}

.archive-list-item {
  display: block;
  padding: 36px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  transition: opacity 0.2s;
}

.archive-list-item:first-child {
  padding-top: 0;
}

.archive-list-item:hover {
  opacity: 0.85;
}

.archive-list-item:hover .archive-list-title {
  color: var(--amber);
}

.archive-list-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.archive-list-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  transition: color 0.2s;
}

.archive-list-item-featured .archive-list-title {
  font-size: 1.6rem;
}

.archive-list-excerpt {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.archive-list-footer {
  display: flex;
  align-items: center;
  gap: 16px;
}

.archive-empty {
  text-align: center;
  padding: 80px 0;
  color: var(--text-muted);
}

.archive-subscribe {
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.nav-archive-active {
  color: var(--amber) !important;
}

@media (max-width: 600px) {
  .archive-page-header { padding: 60px 24px 40px; }
  .archive-page-content { padding: 48px 24px 60px; }
  .archive-subscribe .subscribe-section { padding: 60px 24px 0; }
}