:root {
  --primary: #FF6600;
  --primary-dark: #E05A00;
  --primary-light: #FF8533;
  --dark: #1a1a1a;
  --dark-bg: #111111;
  --dark-card: #1e1e1e;
  --light-bg: #f7f8fa;
  --white: #ffffff;
  --text: #1a1a1a;
  --text-light: #666666;
  --text-muted: #999999;
  --border: #e0e0e0;
  --font-ja: 'Noto Sans JP', sans-serif;
  --font-en: 'Inter', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-ja);
  color: var(--text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

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

/* ===== HEADER ===== */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: 72px;
  background: rgba(26,26,26,0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: background 0.3s;
}
.header.scrolled { background: rgba(26,26,26,0.98); }
.header-inner {
  max-width: 1100px; margin: 0 auto; padding: 0 24px;
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}
.logo img { height: 28px; }
.header-nav { display: flex; gap: 28px; }
.header-nav a {
  font-family: var(--font-ja); font-size: 13px; font-weight: 500;
  color: rgba(255,255,255,0.7); transition: color 0.2s; letter-spacing: 0.02em;
}
.header-nav a:hover { color: var(--primary); }
.header-cta {
  background: var(--primary); color: var(--white);
  padding: 8px 24px; border-radius: 6px;
  font-size: 13px; font-weight: 700; transition: background 0.2s;
}
.header-cta:hover { background: var(--primary-dark); }
.hamburger {
  display: none; background: none; border: none; cursor: pointer;
  width: 28px; height: 20px; position: relative;
}
.hamburger span {
  display: block; width: 100%; height: 2px; background: #fff;
  position: absolute; left: 0; transition: 0.3s;
}
.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 9px; }
.hamburger span:nth-child(3) { top: 18px; }
.hamburger.active span:nth-child(1) { top: 9px; transform: rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { top: 9px; transform: rotate(-45deg); }

.mobile-nav {
  display: none; position: fixed; top: 72px; left: 0; right: 0;
  background: rgba(26,26,26,0.98); padding: 20px 24px;
  flex-direction: column; gap: 16px; z-index: 99;
  transform: translateY(-100%); transition: transform 0.3s;
}
.mobile-nav.active { transform: translateY(0); }
.mobile-nav a { color: rgba(255,255,255,0.8); font-size: 15px; font-weight: 500; padding: 8px 0; }
.mobile-nav-cta {
  background: var(--primary); color: var(--white) !important;
  text-align: center; padding: 12px !important; border-radius: 8px; font-weight: 700;
}

/* ===== HERO ===== */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  justify-content: center; overflow: hidden; padding: 72px 24px 60px;
}
.hero-bg {
  position: absolute; inset: 0;
  background: url('images/hero-banner.jpg') center center / cover no-repeat;
}
.hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(to bottom, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.3) 40%, rgba(0,0,0,0.6) 100%);
}

/* Geometric decorations */
.hero-geometric { position: absolute; inset: 0; z-index: 1; overflow: hidden; pointer-events: none; }
.geo-circle {
  position: absolute; border-radius: 50%; border: 1px solid rgba(255,102,0,0.12);
}
.geo-1 { width: 500px; height: 500px; top: -100px; right: -150px; animation: geoRotate 30s linear infinite; }
.geo-2 { width: 300px; height: 300px; bottom: -50px; left: -80px; border-color: rgba(255,102,0,0.08); animation: geoRotate 25s linear infinite reverse; }
.geo-3 { width: 180px; height: 180px; top: 30%; left: 10%; border-color: rgba(255,255,255,0.04); animation: geoPulse 6s ease-in-out infinite; }
.geo-line {
  position: absolute; height: 1px; background: linear-gradient(90deg, transparent, rgba(255,102,0,0.15), transparent);
}
.geo-l1 { width: 40%; top: 25%; left: 5%; transform: rotate(-15deg); }
.geo-l2 { width: 35%; bottom: 30%; right: 0; transform: rotate(20deg); }
@keyframes geoRotate { to { transform: rotate(360deg); } }
@keyframes geoPulse { 0%,100% { transform: scale(1); opacity: 0.5; } 50% { transform: scale(1.15); opacity: 1; } }

.hero-content {
  position: relative; z-index: 2; text-align: center; max-width: 800px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

/* Top label: SPORTS MARIO × SNS TALENT */
.hero-top-label {
  display: flex; align-items: center; justify-content: center; gap: 16px;
  margin-bottom: 20px;
}
.hero-brand-tag {
  font-family: var(--font-en); font-size: 13px; font-weight: 700;
  letter-spacing: 0.15em; color: rgba(255,255,255,0.6);
  padding: 5px 16px; border: 1px solid rgba(255,255,255,0.15); border-radius: 4px;
}
.hero-x {
  font-family: var(--font-en); font-size: 18px; font-weight: 300;
  color: var(--primary);
}

/* Big typography block */
.hero-main-visual { margin-bottom: 28px; position: relative; }
.hero-trophy-area {
  position: relative; display: flex; align-items: center; justify-content: center;
}
.hero-trophy {
  display: none;
}
@keyframes trophyFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.hero-big-text {
  display: flex; flex-direction: column; align-items: center; line-height: 0.9;
  position: relative; z-index: 1;
}
.hero-big-line1 {
  font-family: var(--font-en); font-size: clamp(60px, 14vw, 130px);
  font-weight: 800; letter-spacing: -0.03em;
  background: linear-gradient(180deg, #FF6600 0%, #FF3D00 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-big-line2 {
  font-family: var(--font-en); font-size: clamp(40px, 9vw, 90px);
  font-weight: 800; letter-spacing: 0.05em; color: var(--white);
  margin-top: 4px;
}
.hero-big-year {
  font-family: var(--font-en); font-size: clamp(24px, 4vw, 40px);
  font-weight: 300; letter-spacing: 0.4em; color: rgba(255,255,255,0.35);
  margin-top: 12px;
}

/* Catchcopy below big text */
.hero-catch {
  font-size: clamp(18px, 3vw, 26px); font-weight: 900; color: var(--white);
  margin-bottom: 12px; line-height: 1.5; letter-spacing: -0.01em;
}
.text-accent { color: var(--primary); }
.hero-sub {
  font-size: clamp(13px, 1.8vw, 15px); color: rgba(255,255,255,0.55);
  line-height: 1.8; margin-bottom: 36px;
}
.hero-prize {
  text-align: center; margin-bottom: 40px;
}
.hero-prize-main {
  display: flex; align-items: baseline; justify-content: center;
}
.prize-yen {
  font-family: var(--font-en); font-size: clamp(36px, 6vw, 56px);
  font-weight: 800; color: var(--primary); line-height: 1;
}
.prize-amount-num {
  font-family: var(--font-en); font-size: clamp(56px, 10vw, 88px);
  font-weight: 800; line-height: 1;
  background: linear-gradient(180deg, #FFD700 0%, #FF6600 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 24px rgba(255,102,0,0.5));
}
.prize-label {
  display: block; font-size: 14px; font-weight: 700; color: rgba(255,255,255,0.7);
  margin-top: 4px; letter-spacing: 0.15em;
}
.prize-sub {
  display: block; font-size: 12px; color: rgba(255,255,255,0.4);
  margin-top: 4px;
}
.hero-cta {
  display: inline-block; background: var(--primary); color: var(--white);
  padding: 16px 48px; border-radius: 8px; font-size: 16px; font-weight: 700;
  transition: all 0.3s; box-shadow: 0 4px 20px rgba(255,102,0,0.3);
}
.hero-cta:hover {
  background: var(--primary-dark); transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(255,102,0,0.4);
}
.hero-scroll {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.hero-scroll span {
  font-family: var(--font-en); font-size: 10px; letter-spacing: 0.2em;
  color: rgba(255,255,255,0.3);
}
.scroll-line {
  width: 1px; height: 40px; background: linear-gradient(to bottom, rgba(255,102,0,0.6), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ===== SECTIONS ===== */
.section { padding: 100px 0; }
.section-light { background: var(--light-bg); }
.section-dark { background: var(--dark-bg); color: var(--white); }
.section-accent {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
}
.section-header { text-align: center; margin-bottom: 60px; }
.section-label {
  font-family: var(--font-en); font-size: 12px; font-weight: 700;
  letter-spacing: 0.2em; color: var(--primary); display: block; margin-bottom: 12px;
}
.section-dark .section-label { color: var(--primary-light); }
.section-accent .section-label { color: rgba(255,255,255,0.7); }
.section-title {
  font-size: clamp(24px, 4vw, 36px); font-weight: 900; letter-spacing: -0.01em;
}

/* ===== OVERVIEW ===== */
.overview-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.overview-card {
  background: var(--white); border-radius: 12px; padding: 32px 24px;
  text-align: center; border: 1px solid var(--border);
  transition: transform 0.3s, box-shadow 0.3s;
}
.overview-card:hover {
  transform: translateY(-4px); box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}
.overview-card-accent {
  background: var(--dark); color: var(--white); border-color: var(--dark);
}
.overview-icon {
  width: 56px; height: 56px; margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
  background: var(--light-bg); border-radius: 12px; color: var(--primary);
}
.overview-card-accent .overview-icon { background: rgba(255,102,0,0.15); }
.overview-card h3 {
  font-size: 14px; font-weight: 700; margin-bottom: 8px;
  color: var(--text-light); letter-spacing: 0.02em;
}
.overview-card-accent h3 { color: rgba(255,255,255,0.6); }
.overview-card p { font-size: 15px; line-height: 1.6; }
.prize-amount {
  font-size: 18px; font-weight: 700;
}
.prize-amount span {
  font-family: var(--font-en); font-size: 48px; font-weight: 800;
  color: var(--primary); line-height: 1;
}

/* ===== TARGET ===== */
.target-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px;
}
.target-card {
  background: var(--dark-card); border-radius: 12px; padding: 32px;
  border: 1px solid rgba(255,255,255,0.08);
}
.target-card-wide { grid-column: 1 / -1; }
.target-card-header {
  display: flex; align-items: center; gap: 12px; margin-bottom: 20px;
}
.target-badge {
  font-family: var(--font-en); font-size: 11px; font-weight: 700;
  letter-spacing: 0.1em; padding: 4px 12px; border-radius: 4px;
}
.target-badge.required { background: var(--primary); color: var(--white); }
.target-badge.welcome { background: rgba(255,102,0,0.15); color: var(--primary-light); }
.target-badge.audience { background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.7); }
.target-card h3 { font-size: 18px; font-weight: 700; }
.target-list { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.target-list li {
  padding-left: 24px; position: relative; font-size: 14px;
  color: rgba(255,255,255,0.7); line-height: 1.6;
}
.target-list li::before {
  content: ''; position: absolute; left: 0; top: 8px;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--primary); opacity: 0.7;
}
.target-list li.highlight { color: var(--primary-light); font-weight: 700; }
.target-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.tag {
  font-size: 13px; padding: 8px 16px; border-radius: 100px;
  background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.6);
  border: 1px solid rgba(255,255,255,0.1);
}

/* ===== ACTIVITY ===== */
.activity-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.activity-card {
  background: var(--white); border-radius: 12px; padding: 36px 28px;
  border: 1px solid var(--border); position: relative; overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
}
.activity-card:hover {
  transform: translateY(-4px); box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}
.activity-number {
  font-family: var(--font-en); font-size: 64px; font-weight: 800;
  color: rgba(255,102,0,0.08); position: absolute; top: -8px; right: 12px;
  line-height: 1;
}
.activity-icon {
  width: 56px; height: 56px; display: flex; align-items: center; justify-content: center;
  background: rgba(255,102,0,0.08); border-radius: 12px; color: var(--primary);
  margin-bottom: 20px;
}
.activity-card h3 {
  font-size: 18px; font-weight: 700; margin-bottom: 10px; color: var(--dark);
}
.activity-card p {
  font-size: 14px; color: var(--text-light); line-height: 1.7; margin-bottom: 16px;
}
.activity-freq {
  font-family: var(--font-en); font-size: 12px; font-weight: 600;
  color: var(--primary); letter-spacing: 0.05em;
  padding: 4px 12px; background: rgba(255,102,0,0.08); border-radius: 4px;
}

/* ===== INSTAGRAM ===== */
.section-desc {
  font-size: 15px; color: var(--text-light); margin-top: 12px; line-height: 1.8;
}
.section-dark .section-desc { color: rgba(255,255,255,0.5); }
.instagram-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 40px;
}
.instagram-embed-wrapper {
  border-radius: 12px; overflow: hidden;
  background: var(--dark-card); border: 1px solid rgba(255,255,255,0.08);
}
.instagram-embed-wrapper iframe {
  width: 100%; min-height: 480px; display: block;
}
.instagram-placeholder {
  aspect-ratio: 4/5; background: var(--dark-card); border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.08);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 12px; text-align: center; padding: 24px;
  transition: transform 0.3s, border-color 0.3s;
}
.instagram-placeholder:hover {
  transform: translateY(-4px); border-color: rgba(255,102,0,0.3);
}
.instagram-placeholder-icon { color: var(--primary); opacity: 0.6; }
.instagram-placeholder p {
  font-size: 15px; font-weight: 700; color: var(--white);
}
.instagram-placeholder span {
  font-size: 12px; color: rgba(255,255,255,0.4); line-height: 1.6;
}
.instagram-follow { text-align: center; }
.btn-instagram {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 32px; border-radius: 8px; font-size: 14px; font-weight: 700;
  color: var(--white); border: 1px solid rgba(255,255,255,0.2);
  transition: all 0.3s; background: transparent;
}
.btn-instagram:hover {
  border-color: var(--primary); color: var(--primary);
  background: rgba(255,102,0,0.08);
}

/* ===== FLOW ===== */
.flow-timeline {
  max-width: 680px; margin: 0 auto; position: relative;
  padding-left: 48px;
}
.flow-timeline::before {
  content: ''; position: absolute; left: 20px; top: 0; bottom: 0;
  width: 2px; background: rgba(255,102,0,0.2);
}
.flow-step {
  position: relative; margin-bottom: 40px; display: flex; gap: 24px;
}
.flow-step:last-child { margin-bottom: 0; }
.flow-step-number {
  position: absolute; left: -48px; top: 0;
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--primary); color: var(--white);
  font-family: var(--font-en); font-size: 18px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  z-index: 2; box-shadow: 0 0 0 6px var(--dark-bg);
}
.flow-step-content {
  background: var(--dark-card); border-radius: 12px; padding: 28px;
  border: 1px solid rgba(255,255,255,0.08); flex: 1;
}
.flow-step-content h3 {
  font-size: 18px; font-weight: 700; margin-bottom: 4px;
  display: flex; align-items: center; gap: 10px;
}
.step-tag {
  font-size: 11px; font-weight: 600; color: var(--primary);
  background: rgba(255,102,0,0.12); padding: 2px 10px; border-radius: 4px;
}
.flow-step-sub {
  font-size: 12px; color: var(--primary-light); font-weight: 600;
  margin-bottom: 8px; letter-spacing: 0.02em;
}
.flow-step-content p:last-child {
  font-size: 14px; color: rgba(255,255,255,0.6); line-height: 1.7;
}

/* ===== CRITERIA ===== */
.criteria-lead {
  text-align: center; font-size: 15px; color: var(--text-light);
  max-width: 680px; margin: 0 auto 32px;
}
.criteria-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px; max-width: 980px; margin: 0 auto;
}
.criteria-item {
  display: flex; flex-direction: column; gap: 10px;
  padding: 24px 20px; background: #fff; border: 1px solid var(--border);
  border-radius: 12px; border-left: 4px solid var(--primary);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.criteria-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}
.criteria-item h4 {
  font-size: 17px; font-weight: 700; color: var(--dark);
}
.criteria-item p {
  font-size: 13px; color: var(--text-light); line-height: 1.6;
}
@media (max-width: 768px) {
  .criteria-grid { grid-template-columns: 1fr; }
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 720px; margin: 0 auto;
  display: flex; flex-direction: column; gap: 8px;
}
.faq-item {
  background: var(--dark-card); border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.06); overflow: hidden;
}
.faq-question {
  width: 100%; padding: 20px 24px; display: flex;
  align-items: center; justify-content: space-between; gap: 16px;
  background: none; border: none; cursor: pointer; text-align: left;
  font-family: var(--font-ja); font-size: 15px; font-weight: 700;
  color: var(--white); transition: color 0.2s;
}
.faq-question:hover { color: var(--primary-light); }
.faq-icon {
  font-size: 22px; color: var(--primary); transition: transform 0.3s;
  flex-shrink: 0;
}
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.4s;
}
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer p {
  padding: 0 24px 20px; font-size: 14px; color: rgba(255,255,255,0.6); line-height: 1.8;
}

/* ===== ENTRY ===== */
.entry-content {
  text-align: center; padding: 20px 0;
}
.entry-title {
  font-size: clamp(28px, 5vw, 40px); font-weight: 900;
  margin-bottom: 20px; line-height: 1.4;
}
.entry-desc {
  font-size: 15px; color: rgba(255,255,255,0.8); margin-bottom: 40px; line-height: 1.8;
}
.entry-buttons { margin-bottom: 16px; }
.btn-entry {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--white); color: var(--primary); padding: 18px 48px;
  border-radius: 8px; font-size: 17px; font-weight: 700;
  transition: all 0.3s; box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
.btn-entry:hover {
  transform: translateY(-2px); box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}
.entry-note {
  font-size: 12px; color: rgba(255,255,255,0.5);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--dark); padding: 48px 0 32px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 24px;
}
.footer-brand p {
  font-size: 12px; color: var(--text-muted); margin-top: 8px;
}
.footer-links { display: flex; gap: 24px; }
.footer-links a {
  font-size: 13px; color: rgba(255,255,255,0.5); transition: color 0.2s;
}
.footer-links a:hover { color: var(--primary); }
.footer-copy {
  font-family: var(--font-en); font-size: 11px; color: rgba(255,255,255,0.25);
  text-align: center; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.06);
}

/* ===== ANIMATIONS ===== */
[data-animate] {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
[data-animate].visible {
  opacity: 1; transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .header-nav, .header-cta { display: none; }
  .hamburger { display: block; }
  .mobile-nav { display: flex; }
  .section { padding: 72px 0; }
  .section-header { margin-bottom: 40px; }
  .overview-grid { grid-template-columns: repeat(2, 1fr); }
  .target-grid { grid-template-columns: 1fr; }
  .activity-grid { grid-template-columns: 1fr; }
  .hero-highlights { gap: 16px; }
  .hero-highlight-divider { display: none; }
  .hero-highlight-item { flex: 1; min-width: 100px; }
  .flow-timeline { padding-left: 40px; }
  .flow-timeline::before { left: 16px; }
  .flow-step-number { left: -40px; width: 34px; height: 34px; font-size: 15px; }
  .instagram-grid { grid-template-columns: 1fr; max-width: 360px; margin: 0 auto 40px; }
  .footer-inner { flex-direction: column; gap: 20px; text-align: center; }
  .footer-links { flex-wrap: wrap; justify-content: center; }
}

@media (max-width: 480px) {
  .overview-grid { grid-template-columns: 1fr; }
  .hero-cta { width: 100%; text-align: center; }
  .btn-entry { width: 100%; justify-content: center; }
}