/* ========================================
   Buzz MK Racing - Main Stylesheet
   Design System: Black / White / Silver / Dark Grey
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@400;500;600;700&family=Inter:wght@300;400;500;600&family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

/* ---- CSS Variables ---- */
:root {
  --color-black: #000000;
  --color-dark-1: #0a0a0a;
  --color-dark-2: #111111;
  --color-dark-3: #1a1a1a;
  --color-dark-4: #222222;
  --color-dark-5: #2a2a2a;
  --color-grey-1: #e8e8e8;
  --color-grey-2: #d8d8d8;
  --color-grey-3: #c4c4c4;
  --color-grey-4: #b0b0b0;
  --color-grey-5: #9a9a9a;
  --color-silver: #d4d4d4;
  --color-silver-light: #e4e4e4;
  --color-white: #ffffff;
  --color-off-white: #f5f5f5;
  --color-accent: #e8e8e8;

  --font-display: 'Rajdhani', sans-serif;
  --font-body: 'Inter', 'Noto Sans JP', sans-serif;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --spacing-2xl: 10rem;

  --border-width: 1px;
  --border-color: rgba(255, 255, 255, 0.1);
  --border-color-hover: rgba(255, 255, 255, 0.3);

  --transition-fast: 0.2s ease;
  --transition-mid: 0.4s ease;
  --transition-slow: 0.7s ease;

  --nav-height: 80px;
}

/* ---- Reset & Base ---- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  background-color: var(--color-dark-1);
  color: var(--color-white);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ---- Typography ---- */
.font-display {
  font-family: var(--font-display);
  letter-spacing: 0.05em;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.05em;
  line-height: 1.2;
}

.text-hero {
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.0;
  text-transform: uppercase;
}

.text-section-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.text-label {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-grey-4);
}

/* ---- Navigation ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  padding: 0 2.5rem;
  transition: background var(--transition-mid), border-color var(--transition-mid);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border-color);
}

.nav-logo {
  display: flex;
  align-items: center;
  color: var(--color-white);
  white-space: nowrap;
  text-decoration: none;
}

.nav-logo span {
  color: var(--color-silver);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
  margin-left: auto;
}

.nav-links a {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-grey-4);
  padding: 0.4rem 0.9rem;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0.9rem;
  right: 0.9rem;
  height: 1px;
  background: var(--color-white);
  transform: scaleX(0);
  transition: transform var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-white);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
  background: none;
  border: none;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--color-white);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-hamburger.open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}
.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.97);
  z-index: 999;
  padding: 3rem 2.5rem;
  flex-direction: column;
  gap: 0;
  overflow-y: auto;
}

.nav-mobile.open {
  display: flex;
}

.nav-mobile a {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-grey-4);
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border-color);
  transition: color var(--transition-fast);
}

.nav-mobile a:hover {
  color: var(--color-white);
}

/* ---- Hero Section ---- */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--color-black);
}

.hero-bg-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
  filter: grayscale(30%);
}

.hero-bg-gradient {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      to right,
      rgba(0,0,0,0.65) 0%,
      rgba(0,0,0,0.20) 38%,
      rgba(0,0,0,0.02) 65%,
      rgba(0,0,0,0.00) 100%
    ),
    linear-gradient(
      to top,
      rgba(0,0,0,0.35) 0%,
      rgba(0,0,0,0.08) 30%,
      transparent 55%
    ),
    linear-gradient(
      to bottom,
      rgba(0,0,0,0.15) 0%,
      transparent 25%
    );
}

/* Carbon fiber texture overlay */
.hero-bg-texture {
  position: absolute;
  inset: 0;
  opacity: 0.03;
  background-image:
    repeating-linear-gradient(
      45deg,
      #fff 0px,
      #fff 1px,
      transparent 1px,
      transparent 12px
    ),
    repeating-linear-gradient(
      -45deg,
      #fff 0px,
      #fff 1px,
      transparent 1px,
      transparent 12px
    );
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 3rem 6rem;
  max-width: 900px;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-silver);
  margin-bottom: 1.5rem;
}

.hero-label::before {
  content: '';
  display: block;
  width: 30px;
  height: 1px;
  background: var(--color-silver);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 9vw, 8rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 0.95;
  color: var(--color-white);
  margin-bottom: 1.5rem;
}

.hero-title span {
  display: block;
  color: var(--color-silver);
  font-size: 0.55em;
  letter-spacing: 0.1em;
  font-weight: 400;
}

.hero-sub {
  font-size: 1rem;
  font-weight: 300;
  color: var(--color-grey-5);
  max-width: 640px;
  margin-bottom: 3rem;
  line-height: 1.9;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  right: 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  z-index: 2;
}

.hero-scroll span {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-grey-4);
  writing-mode: vertical-rl;
}

.hero-scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--color-grey-4), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); transform-origin: top; }
  50% { opacity: 0.3; }
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 1rem 2.2rem;
  border: 1px solid;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  transform: translateX(-101%);
  transition: transform 0.3s ease;
}

.btn:hover::before {
  transform: translateX(0);
}

.btn-primary {
  background: var(--color-white);
  color: var(--color-black);
  border-color: var(--color-white);
}

.btn-primary::before {
  background: var(--color-silver);
}

.btn-primary:hover {
  color: var(--color-dark-1);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-outline::before {
  background: rgba(255, 255, 255, 0.08);
}

.btn-outline:hover {
  border-color: var(--color-white);
}

.btn span {
  position: relative;
  z-index: 1;
}

/* ---- Section Common ---- */
.section {
  padding: var(--spacing-xl) 0;
}

.section-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 3rem;
}

.section-label {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-grey-4);
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.section-label::before {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background: var(--color-grey-4);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}

.section-sub {
  color: var(--color-grey-4);
  font-size: 0.95rem;
  max-width: 600px;
  margin-top: 0.8rem;
}

.section-header {
  margin-bottom: 4rem;
}

/* ---- Grid ---- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
}

/* ---- Card ---- */
.card {
  background: var(--color-dark-3);
  border: 1px solid var(--border-color);
  transition: border-color var(--transition-fast);
  overflow: hidden;
}

.card:hover {
  border-color: var(--border-color-hover);
}

.card-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3/2;
  background: var(--color-dark-4);
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card:hover .card-image img {
  transform: scale(1.05);
}

.card-body {
  padding: 1.5rem;
}

.card-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-silver);
  margin-bottom: 0.6rem;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 0.5rem;
}

.card-date {
  font-size: 0.75rem;
  color: var(--color-grey-3);
  letter-spacing: 0.08em;
}

.card-excerpt {
  font-size: 0.88rem;
  color: var(--color-grey-5);
  margin-top: 0.8rem;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---- Team Section ---- */
.team-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  min-height: 600px;
}

.team-intro-text {
  padding: 6rem 4rem 6rem 3rem;
}

.team-intro-visual {
  position: relative;
  overflow: hidden;
  background: var(--color-dark-3);
}

.team-intro-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 1.0;
}

/* ---- Person Card ---- */
.person-card {
  position: relative;
  overflow: hidden;
  background: var(--color-dark-3);
}

.person-card-image {
  position: relative;
  overflow: hidden;
  background: var(--color-dark-4);
  height: 500px;
}

.person-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-slow);
}

.person-card:hover .person-card-image img {
  transform: scale(1.03);
}

.person-card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2.5rem 1.8rem 1.8rem;
  background: linear-gradient(transparent, rgba(0,0,0,0.9));
}

.person-card-name {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.person-card-role {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-silver);
  margin-top: 0.3rem;
}

.person-card-flag {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

/* ---- Stats Row ---- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--border-color);
  margin: 0;
}

.stat-item {
  padding: 2.5rem 2rem;
  border-right: 1px solid var(--border-color);
  text-align: center;
}

.stat-item:last-child {
  border-right: none;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 0.02em;
  line-height: 1;
}

.stat-unit {
  font-size: 1.2rem;
  color: var(--color-grey-4);
}

.stat-label {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-grey-4);
  margin-top: 0.5rem;
}

/* ---- Race Schedule ---- */
.schedule-list {
  list-style: none;
}

.schedule-item {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  align-items: center;
  gap: 2rem;
  padding: 1.8rem 2rem;
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-fast);
}

.schedule-item:hover {
  background: rgba(255,255,255,0.02);
}

.schedule-item:first-child {
  border-top: 1px solid var(--border-color);
}

.schedule-round {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-grey-3);
  letter-spacing: 0;
  text-align: center;
}

.schedule-info h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.schedule-info p {
  font-size: 0.82rem;
  color: var(--color-grey-4);
  margin-top: 0.3rem;
}

.schedule-date {
  text-align: right;
  font-size: 0.82rem;
  color: var(--color-grey-4);
  letter-spacing: 0.05em;
}

.schedule-status {
  display: inline-block;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.3rem 0.8rem;
  border: 1px solid;
  margin-top: 0.5rem;
}

.schedule-status.upcoming {
  color: var(--color-silver);
  border-color: var(--color-grey-2);
}

.schedule-status.next {
  color: var(--color-white);
  border-color: var(--color-white);
  background: rgba(255,255,255,0.05);
}

/* ---- Gallery Grid ---- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 280px;
  gap: 3px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  background: var(--color-dark-4);
}

.gallery-item:first-child {
  grid-column: span 2;
  grid-row: span 2;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-item-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0);
  display: flex;
  align-items: flex-end;
  padding: 1.5rem;
  transition: background var(--transition-mid);
}

.gallery-item:hover .gallery-item-overlay {
  background: rgba(0,0,0,0.5);
}

.gallery-item-caption {
  font-size: 0.82rem;
  color: var(--color-white);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--transition-mid), transform var(--transition-mid);
}

.gallery-item:hover .gallery-item-caption {
  opacity: 1;
  transform: translateY(0);
}

.gallery-zoom-icon {
  opacity: 0;
  transition: opacity 0.25s;
}

.gallery-item:hover .gallery-zoom-icon {
  opacity: 1;
}

/* ---- News Image Gallery (detail page) ---- */
.news-image-gallery {
  max-width: 800px;
  margin: 3rem auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.news-gallery-thumb {
  position: relative;
  width: 280px;
  height: 187px;
  overflow: hidden;
  cursor: pointer;
  background: var(--color-dark-3);
  border: 1px solid var(--border-color);
  flex-shrink: 0;
}

/* 画像が1枚だけのときも通常サイズで表示 */

.news-gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
  display: block;
}

.news-gallery-thumb:hover img {
  transform: scale(1.08);
}

.news-gallery-thumb-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.25s;
  color: #fff;
  font-size: 1.2rem;
  opacity: 0;
}

.news-gallery-thumb:hover .news-gallery-thumb-overlay {
  background: rgba(0,0,0,0.45);
  opacity: 1;
}

/* ---- Sponsor Logos ---- */
.sponsor-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.sponsor-logo-item {
  flex: 1 1 200px;
  min-width: 160px;
  background: var(--color-dark-3);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem 1.2rem;
  transition: all var(--transition-fast);
  text-decoration: none;
  gap: 0.8rem;
}

.sponsor-logo-item:hover {
  background: var(--color-dark-4);
  border-color: var(--border-color-hover);
}

.sponsor-logo-item img {
  max-height: 80px;
  max-width: 200px;
  opacity: 0.9;
  transition: opacity var(--transition-fast);
  object-fit: contain;
}

.sponsor-logo-item:hover img {
  opacity: 1;
}

/* Sponsor company name below logo */
.sponsor-company-name {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-grey-4);
  text-align: center;
  line-height: 1.3;
}

.sponsor-logo-item:hover .sponsor-company-name {
  color: var(--color-grey-3);
}

/* Sponsor placeholder text */
.sponsor-placeholder-text {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-grey-3);
  text-align: center;
}

/* ---- CTA Banner ---- */
.cta-banner {
  background: var(--color-dark-3);
  border: 1px solid var(--border-color);
  padding: 5rem 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  right: -100px;
  top: -100px;
  width: 400px;
  height: 400px;
  border: 1px solid rgba(255,255,255,0.03);
  border-radius: 50%;
}

.cta-banner::after {
  content: '';
  position: absolute;
  right: -60px;
  top: -60px;
  width: 250px;
  height: 250px;
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 50%;
}

.cta-text h2 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.cta-text p {
  color: var(--color-grey-4);
  margin-top: 0.8rem;
  font-size: 0.95rem;
}

/* ---- Divider ---- */
.divider {
  width: 100%;
  height: 1px;
  background: var(--border-color);
}

/* ---- Footer ---- */
.footer {
  background: var(--color-black);
  border-top: 1px solid var(--border-color);
  padding: 5rem 0 2rem;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 3rem;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 4rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid var(--border-color);
}

.footer-brand h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--color-grey-4);
  line-height: 1.8;
  max-width: 280px;
}

.footer-col h4 {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-grey-4);
  margin-bottom: 1.5rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.8rem;
}

.footer-col ul li a {
  font-size: 0.88rem;
  color: var(--color-grey-5);
  transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
  color: var(--color-white);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--color-grey-3);
}

.footer-sns {
  display: flex;
  gap: 1rem;
}

.footer-sns a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  font-size: 0.9rem;
  color: var(--color-grey-4);
  transition: all var(--transition-fast);
}

.footer-sns a:hover {
  color: var(--color-white);
  border-color: var(--color-grey-4);
}

/* ---- Page Header ---- */
.page-header {
  padding: calc(var(--nav-height) + 5rem) 0 5rem;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-color);
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-dark-2) 0%, var(--color-black) 100%);
}

.page-header-inner {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 3rem;
}

.page-header-label {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-silver);
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.page-header-label::before {
  content: '';
  display: block;
  width: 30px;
  height: 1px;
  background: var(--color-silver);
}

.page-header h1 {
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.page-header p {
  color: var(--color-grey-4);
  margin-top: 1rem;
  font-size: 1rem;
  max-width: 600px;
}

/* ---- News List ---- */
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
}

/* ニュース一覧：フィーチャーカード（横並び） */
.news-featured-link {
  display: block;
  grid-column: span 2;
}
.news-featured-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 320px;
}
.news-featured-image {
  aspect-ratio: unset;
  height: 100%;
  min-height: unset;
  position: relative;
  overflow: hidden;
  background: var(--color-dark-4);
}
.news-featured-image img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.news-featured-body {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.news-featured-body .read-more {
  margin-top: auto;
  padding-top: 1.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-silver);
  flex-shrink: 0;
}
.news-featured-title {
  font-size: 1.5rem;
}
.news-featured-excerpt {
  margin-top: 1rem;
  -webkit-line-clamp: 4;
  overflow: hidden;
}

/* ---- News Text List ---- */
.news-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border-color);
}

.news-list-item {
  display: grid;
  grid-template-columns: 180px 1fr 32px;
  align-items: center;
  gap: 1.5rem;
  padding: 1.2rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  text-decoration: none;
  color: inherit;
  transition: background var(--transition-fast);
  cursor: pointer;
}

.news-list-item:hover {
  background: rgba(255,255,255,0.03);
}

.news-list-meta {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  flex-shrink: 0;
}

.news-list-date {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--color-grey-4);
  white-space: nowrap;
}

.news-list-cat {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-silver);
  border: 1px solid var(--border-color);
  padding: 0.2rem 0.55rem;
  width: fit-content;
}

.news-list-body {
  min-width: 0;
}

.news-list-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--color-off-white);
  line-height: 1.45;
  transition: color var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news-list-item:hover .news-list-title {
  color: var(--color-white);
}

.news-list-excerpt {
  font-size: 0.78rem;
  color: var(--color-grey-4);
  line-height: 1.6;
  margin: 0.3rem 0 0;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
}

.news-list-arrow {
  color: var(--color-grey-4);
  font-size: 0.75rem;
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.news-list-item:hover .news-list-arrow {
  color: var(--color-white);
  transform: translateX(3px);
}

.news-category-filter {
  display: flex;
  gap: 0;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.7rem 1.5rem;
  background: none;
  border: 1px solid var(--border-color);
  color: var(--color-grey-4);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-right: -1px;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-white);
  color: var(--color-black);
  border-color: var(--color-white);
  z-index: 1;
}

/* ---- News Detail ---- */
.article-body {
  max-width: 800px;
  margin: 0 auto;
}

.article-body h2 {
  font-size: 1.6rem;
  font-weight: 600;
  margin: 2.5rem 0 1rem;
}

.article-body p {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-off-white);
  margin-bottom: 1.2rem;
}

.article-body img {
  width: 100%;
  margin: 2rem 0;
}

.article-body a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-body a:hover {
  opacity: 0.75;
}

/* ---- Driver Profile ---- */
.driver-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  min-height: 90vh;
}

.driver-hero-visual {
  position: relative;
  overflow: hidden;
  background: var(--color-dark-3);
  min-height: 600px;
}

.driver-hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.driver-hero-info {
  background: var(--color-dark-2);
  padding: 5rem 4rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.driver-number {
  font-family: var(--font-display);
  font-size: 8rem;
  font-weight: 700;
  color: rgba(255,255,255,0.05);
  line-height: 1;
  margin-bottom: -2rem;
  letter-spacing: -0.05em;
}

.driver-name-block {
  margin-bottom: 2rem;
}

.driver-first-name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 300;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-grey-4);
}

.driver-last-name {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.1;
}

.driver-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--border-color);
  margin: 2.5rem 0;
}

.driver-stat {
  padding: 1.5rem;
  border-right: 1px solid var(--border-color);
}

.driver-stat:last-child {
  border-right: none;
}

.driver-stat-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
}

.driver-stat-key {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-grey-4);
  margin-top: 0.4rem;
}

/* ---- Car / Machine ---- */
.car-hero {
  position: relative;
  height: 80vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-black);
}

.car-hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
}

.car-spec-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border-color);
}

.spec-item:nth-child(odd) {
  border-right: 1px solid var(--border-color);
}

.spec-key {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-grey-4);
}

.spec-value {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
}

/* ---- Contact Form ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
}

.form-group {
  margin-bottom: 1.8rem;
}

.form-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-grey-4);
  margin-bottom: 0.6rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: var(--color-dark-3);
  border: 1px solid var(--border-color);
  color: var(--color-white);
  padding: 0.9rem 1.2rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast);
  outline: none;
  -webkit-appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-grey-3);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: rgba(255,255,255,0.4);
}

.form-textarea {
  min-height: 160px;
  resize: vertical;
}

.form-select {
  cursor: pointer;
  color: var(--color-grey-5);
}

.form-select option {
  background: var(--color-dark-3);
}

/* ---- Animate on scroll ---- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ---- Image Placeholder ---- */
.img-placeholder {
  width: 100%;
  height: 100%;
  background: var(--color-dark-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  position: relative;
  overflow: hidden;
}

.img-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    linear-gradient(135deg, transparent 45%, rgba(255,255,255,0.02) 45%, rgba(255,255,255,0.02) 55%, transparent 55%),
    linear-gradient(45deg, transparent 45%, rgba(255,255,255,0.02) 45%, rgba(255,255,255,0.02) 55%, transparent 55%);
  background-size: 30px 30px;
}

.img-placeholder-icon {
  font-size: 2rem;
  color: var(--color-grey-2);
  position: relative;
}

.img-placeholder-text {
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-grey-3);
  position: relative;
}

/* ======================================================
   Responsive — Mobile First
   1200px / 900px / 768px / 600px / 480px
   ====================================================== */

/* ---- 1200px ---- */
@media (max-width: 1200px) {
  :root { --nav-height: 70px; }
  .section-inner { padding: 0 2rem; }
  .footer-inner { padding: 0 2rem; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 2.5rem; }
  .hero-content { padding: 0 2.5rem 6rem; }
}

/* ---- 900px (Tablet) ---- */
@media (max-width: 900px) {
  /* Nav */
  .nav { padding: 0 1.5rem; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  /* Hero */
  .hero { min-height: 85vh; }
  .hero-content { padding: 0 1.5rem 5rem; max-width: 100%; }
  .hero-title { font-size: clamp(2.8rem, 10vw, 5rem); }
  .hero-sub { font-size: 0.9rem; }
  .hero-scroll { display: none; }

  /* Section */
  .section { padding: 4rem 0; }
  .section-inner { padding: 0 1.5rem; }
  .section-header { margin-bottom: 2.5rem; }
  .section-title { font-size: clamp(1.8rem, 5vw, 2.8rem); }

  /* Page header */
  .page-header { padding: calc(var(--nav-height) + 3rem) 0 3rem; }
  .page-header-inner { padding: 0 1.5rem; }
  .page-header h1 { font-size: clamp(2.2rem, 8vw, 4rem); }
  .page-header p { font-size: 0.9rem; }

  /* Grids */
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats-row { grid-template-columns: repeat(2, 1fr); }

  /* Team */
  .team-intro { grid-template-columns: 1fr; min-height: auto; }
  .team-intro-text { padding: 3rem 1.5rem 2.5rem 1.5rem; }
  .team-intro-visual { min-height: 300px; }

  /* Person card */
  .person-card-image { height: 360px; }
  .person-card-name { font-size: 1.3rem; }

  /* Driver */
  .driver-hero { grid-template-columns: 1fr; min-height: auto; }
  .driver-hero-visual { min-height: 380px; }
  .driver-hero-info { padding: 3rem 1.5rem; }
  .driver-number { font-size: 5rem; }
  .driver-last-name { font-size: 2.5rem; }
  .driver-stats-grid { grid-template-columns: repeat(3, 1fr); }

  /* Car */
  .car-hero { height: 50vh; min-height: 280px; }
  .car-spec-grid { grid-template-columns: 1fr; }
  .car-spec-grid .spec-item:nth-child(odd) { border-right: none; }

  /* News */
  .news-grid { grid-template-columns: 1fr; }
  .news-featured-link { grid-column: span 1; }
  .news-featured-card { grid-template-columns: 1fr 1fr; grid-template-rows: 240px; }
  .news-featured-image { height: 100%; min-height: unset; }
  .news-featured-body { padding: 2rem; }
  .news-category-filter { gap: 0; }
  .filter-btn { padding: 0.6rem 1rem; font-size: 0.68rem; }
  .news-list-item { grid-template-columns: 160px 1fr 24px; gap: 1rem; }

  /* Gallery */
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 200px;
  }
  .gallery-item:first-child { grid-column: span 2; grid-row: span 1; }

  /* Contact */
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }

  /* Sponsor */
  .sponsor-logo-item { flex: 1 1 140px; padding: 1.5rem 1rem; }
  .sponsor-logo-item img { max-height: 60px; }

  /* Schedule */
  .schedule-item { grid-template-columns: 50px 1fr; gap: 1rem; padding: 1.2rem 1rem; }
  .schedule-date { display: none; }

  /* CTA */
  .cta-banner { flex-direction: column; text-align: center; padding: 3rem 2rem; gap: 2rem; }

  /* Footer */
  .footer { padding: 4rem 0 2rem; }
  .footer-inner { padding: 0 1.5rem; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 2rem; padding-bottom: 2.5rem; }
  .footer-brand { grid-column: span 2; }
}

/* ---- 768px ---- */
@media (max-width: 768px) {
  /* Hero CTA buttons: full width on small screens */
  .hero-cta { flex-direction: column; gap: 0.8rem; }
  .hero-cta .btn { width: 100%; justify-content: center; padding: 0.9rem 1.5rem; }

  /* Race schedule cards inner grid */
  .race-event-row { grid-template-columns: 60px 1fr !important; }
  .race-event-date-col { min-width: auto !important; text-align: left !important; padding: 1rem !important; }

  /* Driver stats */
  .driver-stats-grid { grid-template-columns: repeat(3, 1fr); }
  .driver-stat { padding: 1rem; }
  .driver-stat-value { font-size: 1.4rem; }
}

/* ---- 600px (Mobile) ---- */
@media (max-width: 600px) {
  :root {
    --spacing-xl: 3.5rem;
    --spacing-lg: 2.5rem;
    --nav-height: 64px;
  }

  /* Nav */
  .nav { padding: 0 1rem; height: var(--nav-height); }
  .nav-logo img { height: 28px !important; }

  /* Mobile menu */
  .nav-mobile { padding: 2rem 1.5rem; top: var(--nav-height); }
  .nav-mobile a { font-size: 0.8rem; padding: 0.4rem 0; }

  /* Hero */
  .hero { min-height: 90vh; }
  .hero-content { padding: 0 1.2rem 4.5rem; }
  .hero-label { font-size: 0.62rem; margin-bottom: 1rem; }
  .hero-title { font-size: clamp(2.5rem, 11vw, 4rem); line-height: 0.9; margin-bottom: 1.2rem; }
  .hero-title span { font-size: 0.5em; }
  .hero-sub { font-size: 0.88rem; max-width: 100%; margin-bottom: 2rem; }
  .hero-cta .btn { font-size: 0.75rem; padding: 0.85rem 1.2rem; }

  /* Section */
  .section { padding: 3rem 0; }
  .section-inner { padding: 0 1rem; }
  .section-header { margin-bottom: 2rem; }
  .section-title { font-size: clamp(1.6rem, 6vw, 2.2rem); }
  .section-label { font-size: 0.62rem; }

  /* Page header */
  .page-header { padding: calc(var(--nav-height) + 2rem) 0 2.5rem; }
  .page-header-inner { padding: 0 1rem; }
  .page-header h1 { font-size: clamp(1.9rem, 9vw, 3rem); }
  .page-header p { font-size: 0.85rem; margin-top: 0.8rem; }

  /* Buttons */
  .btn { padding: 0.85rem 1.5rem; font-size: 0.75rem; }

  /* Grids */
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats-row { grid-template-columns: repeat(2, 1fr); }

  /* Team */
  .team-intro-text { padding: 2.5rem 1rem 2rem 1.2rem; }
  .team-intro-visual { min-height: 250px; }

  /* Person card */
  .person-card-image { height: 280px; }
  .person-card-name { font-size: 1.2rem; }
  .person-card-overlay { padding: 1.5rem 1.2rem 1.2rem; }

  /* Stats */
  .stat-item { padding: 1.8rem 0.8rem; }
  .stat-number { font-size: 2.2rem; }
  .stat-unit { font-size: 1rem; }
  .stat-label { font-size: 0.62rem; }

  /* News */
  .news-category-filter { margin-bottom: 1.8rem; }
  .filter-btn { padding: 0.55rem 0.9rem; font-size: 0.65rem; }
  .card-body { padding: 1.2rem; }
  .card-title { font-size: 1rem; }
  .card-excerpt { font-size: 0.85rem; -webkit-line-clamp: 2; }

  /* News featured card: 縦積み */
  .news-featured-link { grid-column: span 1; }
  .news-featured-card { grid-template-columns: 1fr; grid-template-rows: auto; }
  .news-featured-image { height: 200px; min-height: unset; }
  .news-featured-body { padding: 1.5rem; }
  .news-featured-title { font-size: 1.15rem; }
  .news-featured-excerpt { -webkit-line-clamp: 3; }
  /* News list: スマホ縦並び */
  .news-list-item { grid-template-columns: 1fr 24px; gap: 0.8rem; }
  .news-list-meta { flex-direction: row; align-items: center; gap: 0.7rem; grid-column: 1; grid-row: 1; }
  .news-list-body { grid-column: 1; }
  .news-list-arrow { grid-column: 2; grid-row: 1 / 3; }
  .news-list-title { font-size: 0.88rem; white-space: normal; }
  .news-list-excerpt { -webkit-line-clamp: 2; }

  /* News detail */
  .article-body { padding: 0; }
  .article-body h2 { font-size: 1.25rem; }
  .article-body p { font-size: 0.93rem; line-height: 1.85; }

  /* News image thumbs */
  .news-gallery-thumb { width: 200px; height: 134px; }

  /* Gallery */
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 150px;
  }
  .gallery-item:first-child { grid-column: span 2; grid-row: span 1; }

  /* Driver */
  .driver-hero-visual { min-height: 300px; }
  .driver-hero-info { padding: 2.5rem 1rem; }
  .driver-number { font-size: 4rem; margin-bottom: -1.5rem; }
  .driver-first-name { font-size: 1rem; letter-spacing: 0.2em; }
  .driver-last-name { font-size: 2rem; }
  .driver-stats-grid { grid-template-columns: repeat(3, 1fr); }
  .driver-stat { padding: 0.8rem 0.5rem; }
  .driver-stat-value { font-size: 1.2rem; }
  .driver-stat-key { font-size: 0.58rem; }

  /* Car */
  .car-hero { height: 40vh; min-height: 220px; }

  /* Contact */
  .contact-grid { gap: 2rem; }
  .form-input,
  .form-select,
  .form-textarea { padding: 0.8rem 1rem; font-size: 0.9rem; }
  .form-label { font-size: 0.68rem; }
  /* reCAPTCHA responsive */
  .g-recaptcha { transform: scale(0.88); transform-origin: left top; }

  /* Sponsor */
  .sponsor-logo-item { flex: 1 1 120px; min-width: 100px; padding: 1.2rem 0.8rem; }
  .sponsor-logo-item img { max-height: 48px; }
  .sponsor-company-name { font-size: 0.65rem; }

  /* Schedule */
  .schedule-item { padding: 1rem; gap: 0.8rem; }
  .schedule-round { font-size: 1.4rem; }
  .schedule-info h3 { font-size: 0.92rem; }
  .schedule-info p { font-size: 0.75rem; }

  /* CTA */
  .cta-banner { padding: 2.5rem 1.2rem; }
  .cta-text h2 { font-size: clamp(1.4rem, 5vw, 2rem); }
  .cta-text p { font-size: 0.85rem; }

  /* Footer */
  .footer { padding: 3rem 0 2rem; }
  .footer-inner { padding: 0 1rem; }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding-bottom: 2rem;
  }
  .footer-brand { grid-column: span 1; }
  .footer-brand p { max-width: 100%; font-size: 0.83rem; }
  .footer-col h4 { margin-bottom: 1rem; }
  .footer-col ul li { margin-bottom: 0.6rem; }
  .footer-col ul li a { font-size: 0.83rem; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 1rem; padding-top: 1.5rem; }
  .footer-copy { font-size: 0.75rem; }
}

/* ---- 480px (Small Mobile) ---- */
@media (max-width: 480px) {
  /* Hero */
  .hero-title { font-size: clamp(2.2rem, 12vw, 3.2rem); }

  /* Grid-4: スポンサーなど2列維持 */
  .grid-4 { grid-template-columns: repeat(2, 1fr); }

  /* Race schedule inner: 1カラム化 */
  .race-event-row {
    grid-template-columns: 60px 1fr !important;
  }
  .race-event-date-col {
    display: none !important;
  }

  /* Driver stats: 3列 → 1行に収める */
  .driver-stat-value { font-size: 1.1rem; }

  /* Gallery: 1列 */
  .gallery-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: 200px;
  }
  .gallery-item:first-child { grid-column: span 1; }

  /* Stats: 2列 → 各数字サイズ縮小 */
  .stat-number { font-size: 2rem; }

  /* Contact form padding */
  .section-inner { padding: 0 0.9rem; }
  .page-header-inner { padding: 0 0.9rem; }
  .footer-inner { padding: 0 0.9rem; }
}

/* ======================================================
   Race / Gallery / Contact — Mobile-specific overrides
   ====================================================== */

/* レーススケジュール行：インラインgrid上書き用 */
.race-event-row {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 0;
  align-items: center;
}

/* ギャラリー カテゴリータブ */
.gallery-tab-nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 3rem;
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.gallery-tab-nav::-webkit-scrollbar { display: none; }

/* レース詳細ナビ */
.race-detail-nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Contact form box */
.contact-form-box {
  background: var(--color-dark-3);
  border: 1px solid var(--border-color);
  padding: 3rem;
}

/* Season stats grid (race page top) */
.season-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--border-color);
}

/* ======================================================
   Mobile overrides for inline-style elements
   ====================================================== */

@media (max-width: 900px) {
  /* ギャラリータブ padding */
  .gallery-tab-nav { padding: 0 1.5rem; }
  .race-detail-nav { padding: 0 1.5rem; }
}

@media (max-width: 900px) {
  /* チーム・スポンサー等の2カラム+大gap→1カラム */
  .two-col-wide {
    grid-template-columns: 1fr !important;
    gap: 2.5rem !important;
  }

  /* Director hero: 縦積み */
  .director-hero-grid {
    grid-template-columns: 1fr !important;
    min-height: auto !important;
  }
  .director-hero-grid > div:first-child {
    min-height: 380px !important;
  }
  .director-hero-grid > div:last-child {
    padding: 3rem 2rem !important;
  }

  /* Director biography grid */
  .director-bio-grid {
    grid-template-columns: 1fr !important;
    gap: 2rem !important;
  }

  /* キャリア行のpadding調整 */
  .career-row {
    gap: 1.5rem !important;
  }
}

@media (max-width: 600px) {
  /* Director hero */
  .director-hero-grid > div:first-child {
    min-height: 300px !important;
  }
  .director-hero-grid > div:last-child {
    padding: 2rem 1.2rem !important;
  }

  /* キャリア行: year列を縦に */
  .career-row {
    grid-template-columns: 1fr !important;
    gap: 0.5rem !important;
    padding: 1.5rem 0 !important;
  }

  /* レース行: 大会番号列を小さく、日付列を非表示 */
  .race-event-row {
    grid-template-columns: 56px 1fr !important;
  }
  .race-event-row > *:last-child {
    display: none !important;
  }

  /* season stats: 2列 */
  .season-stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  .season-stats-grid > div:nth-child(2) {
    border-right: none !important;
  }
  .season-stats-grid > div:nth-child(3) {
    border-top: 1px solid var(--border-color);
  }
  .season-stats-grid > div:nth-child(4) {
    border-top: 1px solid var(--border-color);
  }

  /* ギャラリータブ padding */
  .gallery-tab-nav { padding: 0 1rem; }
  .race-detail-nav { padding: 0 1rem; }

  /* Contact form box padding */
  .contact-form-box { padding: 1.8rem 1.2rem; }

  /* RACE DETAIL Overview grid: 1列 */
  .race-overview-grid {
    grid-template-columns: 1fr !important;
  }

  /* レース詳細ページ ラウンド行の横並びを縦に */
  .round-rows-grid {
    grid-template-columns: 1fr !important;
  }
  .round-rows-grid > div {
    border-left: none !important;
    border-top: 1px solid var(--border-color);
  }
  .round-rows-grid > div:first-child {
    border-top: none;
  }

  /* TOP の inline grid (race schedule) */
  .top-race-row {
    grid-template-columns: 56px 1fr !important;
  }
  .top-race-row > *:last-child {
    display: none !important;
  }

  /* マニフェストのデコ文字を非表示 */
  .manifesto-bg-text { display: none; }
}

@media (max-width: 480px) {
  /* reCAPTCHAをより小さく */
  .g-recaptcha {
    transform: scale(0.78);
    transform-origin: left top;
  }

  /* フォームボックス */
  .contact-form-box { padding: 1.4rem 1rem; }
}

/* ---- Utility ---- */
.text-silver { color: var(--color-silver); }
.text-grey { color: var(--color-grey-4); }
.text-upper { text-transform: uppercase; }
.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-sm { gap: 1rem; }
.gap-md { gap: 2rem; }

.line-accent {
  display: inline-block;
  width: 40px;
  height: 2px;
  background: var(--color-silver);
  vertical-align: middle;
  margin-right: 1rem;
}