/* ============================================
   TIMESYNC - 計測プラットフォーム
   共通スタイルシート
   ============================================ */

/* リセット & ベース */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-primary:   #002b5c;   /* ネイビー */
  --color-accent:    #0099d9;   /* シアンブルー */
  --color-accent2:   #00c2a0;   /* グリーン */
  --color-text:      #1a1a1a;
  --color-text-sub:  #555;
  --color-bg:        #f5f7fb;
  --color-white:     #ffffff;
  --color-border:    #dde3ed;
  --radius:          8px;
  --shadow:          0 4px 20px rgba(0,43,92,.10);
  --transition:      .3s ease;
  --max-w:           1100px;
  --font-ja:         'Noto Sans JP', 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-ja);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.7;
  font-size: 16px;
}

img { max-width: 100%; height: auto; display: block; }
a  { color: var(--color-accent); text-decoration: none; transition: opacity var(--transition); }
a:hover { opacity: .75; }

/* ============================================
   ユーティリティ
   ============================================ */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section    { padding: 80px 0; }
.section--dark  { background: var(--color-primary); color: var(--color-white); }
.section--gray  { background: var(--color-bg); }
.section--accent { background: var(--color-accent); color: var(--color-white); }

.section-label {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}
.section--dark  .section-label,
.section--accent .section-label { color: rgba(255,255,255,.75); }

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-lead {
  font-size: 1.05rem;
  color: var(--color-text-sub);
  max-width: 640px;
}
.section--dark  .section-lead,
.section--accent .section-lead { color: rgba(255,255,255,.85); }

.text-center { text-align: center; }
.text-center .section-lead { margin: 0 auto; }

/* ============================================
   ボタン
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: .95rem;
  font-weight: 700;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
}
.btn-primary:hover { background: #007ab8; opacity: 1; }

.btn-outline {
  background: transparent;
  border-color: var(--color-white);
  color: var(--color-white);
}
.btn-outline:hover { background: rgba(255,255,255,.15); opacity: 1; }

.btn-outline-dark {
  background: transparent;
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.btn-outline-dark:hover { background: var(--color-accent); color: var(--color-white); opacity: 1; }

/* ============================================
   ヘッダー / ナビゲーション
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.site-logo img { height: 36px; width: auto; }
.site-logo-text {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: .05em;
}
.site-logo-text span { color: var(--color-accent); }

.site-nav { display: flex; align-items: center; gap: 32px; }
.site-nav a {
  font-size: .875rem;
  font-weight: 600;
  color: var(--color-text);
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
}
.site-nav a:hover,
.site-nav a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
  opacity: 1;
}
.site-nav .nav-cta {
  background: var(--color-accent);
  color: var(--color-white);
  padding: 8px 20px;
  border-radius: 50px;
  border-bottom: none;
  font-size: .85rem;
}
.site-nav .nav-cta:hover { background: #007ab8; opacity: 1; }

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-primary);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(0,43,92,.95) 0%, rgba(0,43,92,.75) 60%, rgba(0,153,217,.4) 100%);
  z-index: 1;
}

.hero-bg-img {
  position: absolute;
  inset: 0;
  background-image: url('https://timesync.jp/_src/67730214/timesync_logo.png');
  background-size: cover;
  background-position: center;
  opacity: .12;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px 24px;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,153,217,.25);
  border: 1px solid rgba(0,153,217,.5);
  color: #7dd3fc;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .1em;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 28px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 900;
  color: var(--color-white);
  line-height: 1.2;
  margin-bottom: 24px;
}
.hero h1 .accent { color: #7dd3fc; }
.hero h1 em {
  font-style: normal;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,.8);
  max-width: 560px;
  margin-bottom: 40px;
  line-height: 1.9;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,.15);
  flex-wrap: wrap;
}

.stat-item { color: var(--color-white); }
.stat-num {
  font-size: 2.4rem;
  font-weight: 900;
  color: #7dd3fc;
  line-height: 1;
  margin-bottom: 4px;
}
.stat-label { font-size: .8rem; color: rgba(255,255,255,.65); }

/* ============================================
   NUMBERS BELT (実績帯)
   ============================================ */
.numbers-belt {
  background: var(--color-accent);
  padding: 36px 0;
}

.numbers-belt .container {
  display: flex;
  justify-content: space-around;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.belt-item {
  text-align: center;
  color: var(--color-white);
}
.belt-num {
  font-size: 2rem;
  font-weight: 900;
  display: block;
  line-height: 1;
  margin-bottom: 4px;
}
.belt-label {
  font-size: .8rem;
  opacity: .85;
  display: block;
}

/* ============================================
   ABOUT
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-text .section-title { margin-bottom: 24px; }
.about-text p { color: var(--color-text-sub); margin-bottom: 20px; }

.about-quote {
  border-left: 4px solid var(--color-accent);
  padding: 16px 20px;
  background: var(--color-bg);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 28px 0;
  font-weight: 600;
  color: var(--color-primary);
  font-size: 1.05rem;
  line-height: 1.8;
}

.about-image {
  position: relative;
}
.about-image-main {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--color-primary);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
}
.about-image-badge {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--color-white);
  border-radius: 12px;
  padding: 20px 24px;
  box-shadow: var(--shadow);
  text-align: center;
  border: 2px solid var(--color-accent);
}
.about-image-badge strong { display: block; font-size: 1.8rem; color: var(--color-accent); font-weight: 900; }
.about-image-badge span  { font-size: .75rem; color: var(--color-text-sub); }

/* ============================================
   競技対応
   ============================================ */
.sports-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.sport-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 16px;
  text-align: center;
  transition: all var(--transition);
}
.sport-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 8px 24px rgba(0,153,217,.15);
  transform: translateY(-4px);
}

.sport-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), #006ba3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.6rem;
}

.sport-name {
  font-weight: 800;
  font-size: .95rem;
  color: var(--color-primary);
  margin-bottom: 8px;
}
.sport-desc { font-size: .8rem; color: var(--color-text-sub); line-height: 1.6; }

/* ============================================
   特長 (WHY)
   ============================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 52px;
}

.feature-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: all var(--transition);
}
.feature-card:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(0,153,217,.5);
  transform: translateY(-4px);
}

.feature-num {
  font-size: 3.5rem;
  font-weight: 900;
  color: rgba(0,153,217,.35);
  line-height: 1;
  margin-bottom: 16px;
  font-family: monospace;
}

.feature-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 12px;
}
.feature-title .tag {
  display: block;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.feature-desc { font-size: .875rem; color: rgba(255,255,255,.7); line-height: 1.8; }

/* ============================================
   パートナー
   ============================================ */
.partners-intro {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 52px;
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.partner-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: all var(--transition);
}
.partner-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.partner-area {
  display: inline-block;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text-sub);
  font-size: .72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 50px;
  letter-spacing: .05em;
}
.partner-area.nationwide {
  background: rgba(0,153,217,.08);
  border-color: rgba(0,153,217,.25);
  color: var(--color-accent);
}

.partner-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
}
.partner-sub { font-size: .8rem; color: var(--color-text-sub); }

.partner-sports {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.sport-tag {
  background: var(--color-bg);
  color: var(--color-text-sub);
  font-size: .72rem;
  padding: 3px 10px;
  border-radius: 50px;
  border: 1px solid var(--color-border);
}

.partner-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: .8rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-top: 4px;
}
.partner-link::after { content: '→'; }

.partners-cta {
  text-align: center;
  padding: 28px;
  background: var(--color-bg);
  border-radius: var(--radius);
  border: 1px dashed var(--color-border);
}
.partners-cta p { color: var(--color-text-sub); font-size: .875rem; margin-bottom: 12px; }

/* ============================================
   FAQ
   ============================================ */
.faq-list { max-width: 760px; margin: 48px auto 0; }

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-q {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 24px 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  font-family: var(--font-ja);
  transition: color var(--transition);
}
.faq-q:hover { color: var(--color-accent); }
.faq-q .q-mark {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
  font-weight: 900;
}
.faq-q .q-icon {
  margin-left: auto;
  font-size: 1.2rem;
  flex-shrink: 0;
  transition: transform var(--transition);
  color: var(--color-accent);
}
.faq-item.open .q-icon { transform: rotate(45deg); }

.faq-a {
  display: none;
  padding: 0 0 24px 44px;
  color: var(--color-text-sub);
  line-height: 1.85;
  font-size: .95rem;
}
.faq-item.open .faq-a { display: block; }

/* ============================================
   CTA バナー
   ============================================ */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, #004580 100%);
  padding: 72px 24px;
  text-align: center;
}

.cta-banner h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 16px;
}
.cta-banner p {
  color: rgba(255,255,255,.75);
  margin-bottom: 36px;
  font-size: 1rem;
}
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ============================================
   フッター
   ============================================ */
.site-footer {
  background: #0a1628;
  color: rgba(255,255,255,.6);
  padding: 56px 0 32px;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.1);
  margin-bottom: 32px;
}

.footer-brand-name {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--color-white);
  letter-spacing: .05em;
  margin-bottom: 12px;
}
.footer-brand-name span { color: var(--color-accent); }

.footer-desc {
  font-size: .82rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

.footer-company { font-size: .8rem; line-height: 2; }
.footer-company strong { color: rgba(255,255,255,.85); display: block; margin-bottom: 4px; }

.footer-nav-title {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.4);
  margin-bottom: 16px;
}

.footer-nav a {
  display: block;
  font-size: .85rem;
  color: rgba(255,255,255,.6);
  padding: 5px 0;
  transition: color var(--transition);
}
.footer-nav a:hover { color: var(--color-white); opacity: 1; }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .78rem;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-links { display: flex; gap: 24px; }
.footer-links a { color: rgba(255,255,255,.5); font-size: .78rem; }
.footer-links a:hover { color: var(--color-white); opacity: 1; }

/* ============================================
   レスポンシブ
   ============================================ */
@media (max-width: 900px) {
  .about-grid      { grid-template-columns: 1fr; gap: 40px; }
  .sports-grid     { grid-template-columns: repeat(3, 1fr); }
  .features-grid   { grid-template-columns: 1fr; }
  .partners-grid   { grid-template-columns: 1fr; }
  .footer-top      { grid-template-columns: 1fr; gap: 32px; }
  .hero-stats      { gap: 32px; }
}

@media (max-width: 640px) {
  .section         { padding: 56px 0; }
  .sports-grid     { grid-template-columns: repeat(2, 1fr); }
  .site-nav        { display: none; }
  .hero h1         { font-size: 1.8rem; }
  .numbers-belt .container { justify-content: flex-start; gap: 32px; }
}