/*
Theme Name: Atlas AI Laboratory
Theme URI: https://atlas-int.jp/
Author: Atlas Intelligence
Description: Atlas AI研究所 - AIお役立ち情報ブログ
Version: 1.0.0
Text Domain: atlas-lab
*/

:root {
  --navy: #1B2E6B;
  --navy-dark: #0D1A45;
  --navy-deeper: #080F2A;
  --cyan: #4DC8E8;
  --cyan-light: #7FDCF5;
  --cyan-glow: rgba(77, 200, 232, 0.15);
  --cyan-border: rgba(77, 200, 232, 0.3);
  --white: #FFFFFF;
  --white-80: rgba(255,255,255,0.8);
  --white-50: rgba(255,255,255,0.5);
  --white-20: rgba(255,255,255,0.2);
  --white-10: rgba(255,255,255,0.06);
  --gray-text: #94A3B8;
  --card-bg: rgba(13, 26, 69, 0.7);
  --card-border: rgba(77, 200, 232, 0.15);
  --tag-bg: rgba(77, 200, 232, 0.12);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans JP', sans-serif;
  background-color: var(--navy-deeper);
  color: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(77,200,232,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77,200,232,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ── HEADER ── */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(8, 15, 42, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--cyan-border);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.logo-mark { width: 36px; height: 36px; position: relative; flex-shrink: 0; }
.logo-mark svg { width: 100%; height: 100%; }
.logo-text-group { display: flex; flex-direction: column; gap: 1px; }

.logo-main {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--white);
}

.logo-sub {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

nav { display: flex; align-items: center; gap: 8px; }

nav a {
  font-size: 13px;
  font-weight: 400;
  color: var(--white-80);
  text-decoration: none;
  padding: 6px 16px;
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
  letter-spacing: 0.04em;
}

nav a:hover { color: var(--cyan); background: var(--cyan-glow); }

.nav-cta {
  background: var(--cyan) !important;
  color: var(--navy-deeper) !important;
  font-weight: 600 !important;
  border-radius: 8px !important;
}

.nav-cta:hover { background: var(--cyan-light) !important; }

/* ── HERO ── */
.hero {
  position: relative;
  padding: 160px 32px 100px;
  max-width: 1200px;
  margin: 0 auto;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--tag-bg);
  border: 1px solid var(--cyan-border);
  border-radius: 100px;
  padding: 6px 16px;
  margin-bottom: 28px;
}

.hero-badge-dot {
  width: 6px; height: 6px;
  background: var(--cyan);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero-badge span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: 0.12em;
}

.hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(36px, 5vw, 62px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.hero h1 .accent { color: var(--cyan); }

.hero-ja {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: clamp(18px, 2.5vw, 26px);
  font-weight: 300;
  color: var(--white-80);
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.hero-desc {
  font-size: 15px;
  color: var(--gray-text);
  max-width: 520px;
  line-height: 1.8;
  margin-bottom: 40px;
}

.hero-stats { display: flex; gap: 40px; flex-wrap: wrap; }
.hero-stat { display: flex; flex-direction: column; gap: 4px; }

.hero-stat-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 28px;
  font-weight: 700;
  color: var(--cyan);
}

.hero-stat-label { font-size: 12px; color: var(--gray-text); letter-spacing: 0.06em; }

.hero-orb {
  position: absolute;
  top: 60px; right: -100px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(77,200,232,0.08) 0%, transparent 70%);
  pointer-events: none;
  border-radius: 50%;
}

/* ── SECTIONS ── */
.section {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px 80px;
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 36px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--white-10);
}

.section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: 0.2em;
  margin-bottom: 8px;
}

.section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.see-all {
  font-size: 13px;
  color: var(--cyan);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  transition: gap 0.2s;
}
.see-all:hover { gap: 10px; }

/* ── FEATURED CARD ── */
.featured-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  overflow: hidden;
  backdrop-filter: blur(12px);
  margin-bottom: 80px;
  transition: border-color 0.3s, box-shadow 0.3s;
  text-decoration: none;
  color: inherit;
}

.featured-card:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 40px rgba(77,200,232,0.1);
}

.featured-image {
  background: linear-gradient(135deg, var(--navy) 0%, #162456 50%, #0D3060 100%);
  position: relative;
  min-height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.featured-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(77,200,232,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77,200,232,0.08) 1px, transparent 1px);
  background-size: 30px 30px;
}

.featured-image img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.featured-icon {
  font-size: 80px;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 0 30px rgba(77,200,232,0.4));
}

.featured-content {
  padding: 48px 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.card-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--tag-bg);
  border: 1px solid var(--cyan-border);
  border-radius: 100px;
  padding: 4px 12px;
  font-size: 11px;
  color: var(--cyan);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
  width: fit-content;
}

.featured-title {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 16px;
}

.featured-excerpt {
  font-size: 14px;
  color: var(--gray-text);
  line-height: 1.85;
  margin-bottom: 28px;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: var(--white-50);
  font-family: 'Space Grotesk', sans-serif;
}

.card-meta-sep { opacity: 0.3; }

/* ── CATEGORIES ── */
.categories {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px 60px;
}

.category-tabs { display: flex; gap: 10px; flex-wrap: wrap; }

.category-tab {
  padding: 8px 20px;
  border-radius: 100px;
  border: 1px solid var(--white-20);
  font-size: 13px;
  color: var(--white-80);
  text-decoration: none;
  transition: all 0.2s;
  font-family: 'Noto Sans JP', sans-serif;
  background: transparent;
  display: inline-block;
}

.category-tab:hover,
.category-tab.active {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--tag-bg);
}

/* ── ARTICLE GRID ── */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.article-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  overflow: hidden;
  backdrop-filter: blur(12px);
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  border-color: rgba(77, 200, 232, 0.5);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3), 0 0 20px rgba(77,200,232,0.05);
}

.article-thumb {
  height: 160px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(77,200,232,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77,200,232,0.06) 1px, transparent 1px);
  background-size: 24px 24px;
  z-index: 0;
}

.article-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.thumb-navy { background: linear-gradient(135deg, #1B2E6B, #0D3060); }
.thumb-teal { background: linear-gradient(135deg, #0D3060, #0A4A5E); }
.thumb-dark { background: linear-gradient(135deg, #0D1B4B, #1B2E6B); }

.thumb-icon {
  font-size: 48px;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 0 16px rgba(77,200,232,0.3));
}

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

.article-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--cyan);
  letter-spacing: 0.12em;
  margin-bottom: 12px;
}

.article-title {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.55;
  margin-bottom: 12px;
  letter-spacing: 0.01em;
  flex: 1;
}

.article-excerpt {
  font-size: 13px;
  color: var(--gray-text);
  line-height: 1.75;
  margin-bottom: 20px;
}

.article-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--white-10);
  padding-top: 16px;
}

.article-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--white-50);
}

.article-readmore {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 12px;
  color: var(--cyan);
}

/* ── SECTION DIVIDER ── */
.section-divider {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto 80px;
  padding: 0 32px;
}

.divider-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan-border), transparent);
}

/* ── PICKUP / SERIES ── */
.pickup-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.pickup-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 32px;
  backdrop-filter: blur(12px);
  transition: border-color 0.3s, transform 0.3s;
  text-decoration: none;
  color: inherit;
  display: flex;
  gap: 24px;
  position: relative;
}

.pickup-card:hover {
  border-color: rgba(77,200,232,0.5);
  transform: translateY(-3px);
}

.pickup-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 36px;
  font-weight: 700;
  color: var(--cyan-border);
  line-height: 1;
  flex-shrink: 0;
}

.pickup-content { flex: 1; }
.pickup-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--cyan);
  letter-spacing: 0.12em;
  margin-bottom: 10px;
}

.pickup-title { font-size: 16px; font-weight: 700; line-height: 1.5; margin-bottom: 12px; }
.pickup-meta { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--white-50); }

/* ── COMING SOON ── */
.coming-soon-card {
  cursor: default;
  pointer-events: none;
}

.coming-soon-card:hover {
  border-color: var(--card-border) !important;
  transform: none !important;
  box-shadow: none !important;
}

.coming-soon-card .article-body,
.coming-soon-card .featured-content,
.coming-soon-card .pickup-content {
  opacity: 0.35;
  filter: blur(2px);
  user-select: none;
}

.coming-soon-card .article-thumb,
.coming-soon-card .featured-image { opacity: 0.5; }

.cs-badge {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
  pointer-events: none;
}

.cs-badge-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--cyan);
  background: rgba(8, 15, 42, 0.88);
  border: 1px solid var(--cyan-border);
  border-radius: 100px;
  padding: 6px 18px;
  backdrop-filter: blur(8px);
  white-space: nowrap;
}

/* ── NEWSLETTER ── */
.newsletter {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px 100px;
}

.newsletter-inner {
  background: linear-gradient(135deg, rgba(27,46,107,0.8), rgba(13,26,69,0.9));
  border: 1px solid var(--cyan-border);
  border-radius: 24px;
  padding: 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.newsletter-inner::before {
  content: '';
  position: absolute;
  top: -100px; left: 50%;
  transform: translateX(-50%);
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(77,200,232,0.08), transparent 70%);
  pointer-events: none;
}

.newsletter-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: 0.2em;
  margin-bottom: 16px;
}

.newsletter-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.newsletter-desc {
  font-size: 15px;
  color: var(--gray-text);
  margin-bottom: 36px;
  line-height: 1.8;
}

.newsletter-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
}

.newsletter-input {
  flex: 1;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--white-20);
  border-radius: 10px;
  padding: 14px 20px;
  font-size: 14px;
  color: var(--white);
  font-family: 'Noto Sans JP', sans-serif;
  outline: none;
  transition: border-color 0.2s;
}

.newsletter-input::placeholder { color: var(--white-50); }
.newsletter-input:focus { border-color: var(--cyan); }

.newsletter-btn {
  background: var(--cyan);
  color: var(--navy-deeper);
  border: none;
  border-radius: 10px;
  padding: 14px 28px;
  font-size: 14px;
  font-weight: 700;
  font-family: 'Noto Sans JP', sans-serif;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s, transform 0.1s;
}

.newsletter-btn:hover { background: var(--cyan-light); transform: scale(1.02); }

/* ── FOOTER ── */
footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--white-10);
  padding: 48px 32px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-logo { display: flex; align-items: center; gap: 12px; }
.footer-links { display: flex; gap: 24px; }

.footer-links a {
  font-size: 13px;
  color: var(--white-50);
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer-copy {
  font-size: 12px;
  color: var(--white-50);
  font-family: 'Space Grotesk', sans-serif;
}

/* ── HAMBURGER ── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 200;
}

.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s, width 0.3s;
  transform-origin: center;
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; width: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed;
  top: 68px; left: 0; right: 0;
  background: rgba(8, 15, 42, 0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--cyan-border);
  z-index: 99;
  padding: 24px 24px 32px;
  flex-direction: column;
  gap: 8px;
  transform: translateY(-8px);
  opacity: 0;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.mobile-menu.open { transform: translateY(0); opacity: 1; }

.mobile-menu a {
  font-size: 16px;
  font-weight: 500;
  color: var(--white-80);
  text-decoration: none;
  padding: 14px 16px;
  border-radius: 10px;
  transition: background 0.2s, color 0.2s;
}

.mobile-menu a:hover { background: var(--cyan-glow); color: var(--cyan); }

.mobile-menu .mob-cta {
  margin-top: 8px;
  background: var(--cyan);
  color: var(--navy-deeper) !important;
  font-weight: 700 !important;
  text-align: center;
}

/* ── SINGLE POST ── */
.single-wrap {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 100px 32px 80px;
}

.single-back {
  margin-bottom: 40px;
}

.single-back a {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px;
  color: var(--cyan);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s;
}

.single-back a:hover { gap: 10px; }

.single-hero { margin-bottom: 40px; }

.single-title {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: clamp(24px, 4vw, 38px);
  font-weight: 700;
  line-height: 1.4;
  margin: 16px 0 20px;
  letter-spacing: 0.01em;
}

.single-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px;
  color: var(--white-50);
}

.single-meta-sep { opacity: 0.3; }

.single-thumbnail {
  width: 100%;
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 48px;
  border: 1px solid var(--card-border);
}

.single-thumbnail img { width: 100%; height: auto; display: block; }

/* ── ENTRY CONTENT ── */
.entry-content {
  font-size: 16px;
  line-height: 1.9;
  color: var(--white-80);
}

.entry-content h2 {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 22px;
  font-weight: 700;
  margin: 56px 0 20px;
  padding-left: 16px;
  border-left: 3px solid var(--cyan);
  color: var(--white);
  line-height: 1.4;
}

.entry-content h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 40px 0 16px;
  color: var(--white);
}

.entry-content p { margin-bottom: 24px; }

.entry-content a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.entry-content ul,
.entry-content ol {
  margin: 0 0 24px 24px;
}

.entry-content li { margin-bottom: 8px; }

.entry-content blockquote {
  border-left: 2px solid var(--cyan-border);
  padding: 16px 24px;
  margin: 32px 0;
  background: var(--white-10);
  border-radius: 0 8px 8px 0;
  color: var(--gray-text);
  font-style: italic;
}

.entry-content code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  background: rgba(77,200,232,0.1);
  color: var(--cyan-light);
  padding: 2px 8px;
  border-radius: 4px;
}

.entry-content pre {
  background: rgba(13,26,69,0.9);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 24px;
  overflow-x: auto;
  margin: 32px 0;
}

.entry-content pre code {
  background: none;
  padding: 0;
  font-size: 14px;
  color: var(--white-80);
}

.entry-content img {
  max-width: 100%;
  border-radius: 12px;
  margin: 24px 0;
  border: 1px solid var(--card-border);
}

.entry-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 14px;
}

.entry-content th,
.entry-content td {
  padding: 12px 16px;
  border: 1px solid var(--card-border);
  text-align: left;
}

.entry-content th {
  background: var(--card-bg);
  color: var(--cyan);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
}

.single-footer-cta {
  margin-top: 80px;
  padding: 48px 40px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  text-align: center;
  backdrop-filter: blur(12px);
}

.single-footer-cta p {
  color: var(--gray-text);
  margin-bottom: 24px;
  font-size: 15px;
}

.cta-btn {
  display: inline-block;
  background: var(--cyan);
  color: var(--navy-deeper);
  font-weight: 700;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 15px;
  padding: 14px 36px;
  border-radius: 10px;
  text-decoration: none;
  transition: background 0.2s, transform 0.1s;
}

.cta-btn:hover { background: var(--cyan-light); transform: scale(1.02); }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .featured-card { grid-template-columns: 1fr; }
  .featured-image { min-height: 200px; }
  .article-grid { grid-template-columns: repeat(2, 1fr); }
  .pickup-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 36px; }
}

@media (max-width: 640px) {
  .header-inner { padding: 0 20px; }
  nav { display: none; }
  .hamburger { display: flex; }
  .mobile-menu { display: flex; }

  .hero { padding: 110px 20px 56px; }
  .hero h1 { font-size: 30px; line-height: 1.25; }
  .hero-ja { font-size: 15px; }
  .hero-desc { font-size: 14px; }
  .hero-stats { gap: 24px; }
  .hero-stat-num { font-size: 22px; }
  .hero-orb { display: none; }

  .section { padding-left: 20px; padding-right: 20px; padding-bottom: 56px; }
  .categories { padding-left: 20px; padding-right: 20px; padding-bottom: 40px; }
  .newsletter { padding-left: 20px; padding-right: 20px; }
  .section-divider { padding-left: 20px; padding-right: 20px; }
  .section-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .section-title { font-size: 20px; }
  .article-grid { grid-template-columns: 1fr; }
  .featured-content { padding: 28px 24px; }
  .featured-title { font-size: 18px; }
  .pickup-card { flex-direction: column; gap: 12px; padding: 24px; }
  .pickup-num { font-size: 28px; }
  .pickup-title { font-size: 14px; }
  .newsletter-inner { padding: 40px 24px; }
  .newsletter-title { font-size: 22px; }
  .newsletter-form { flex-direction: column; }
  .footer-inner { flex-direction: column; align-items: center; text-align: center; gap: 16px; }
  .footer-links { flex-wrap: wrap; justify-content: center; gap: 16px; }
  .category-tabs { gap: 8px; }
  .category-tab { font-size: 12px; padding: 6px 14px; }

  .single-wrap { padding: 100px 20px 60px; }
  .single-meta { flex-wrap: wrap; gap: 8px; }
}