/* AI ADVANCE（ai-advance.jp）共通スタイル
 * ai-yosou.css（sniper-japan.jp と共通の予想表示）が使う変数 --navy --blue --border --radius --text --muted --bg-alt もここで定義する。
 */
:root {
  --navy: #0b1f3a;
  --navy2: #13325c;
  --blue: #1f6feb;
  --cyan: #12b5d6;
  --accent: #ff5a36;
  --text: #1c2533;
  --muted: #5d6b80;
  --border: #d9e0ea;
  --bg: #ffffff;
  --bg-alt: #f3f6fb;
  --radius: 8px;
  --max: 1160px;
  --c-boat: #1f6feb;
  --c-keirin: #e0383e;
  --c-keiba: #1f9d55;
  --c-chiho: #d9a400;
  --c-auto: #8a4fd6;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", Meiryo, "Yu Gothic", sans-serif;
  font-size: 16px; line-height: 1.75;
}
img { max-width: 100%; height: auto; vertical-align: middle; }
a { color: var(--blue); }
a:hover { text-decoration: none; }
.container { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
.small { font-size: 13px; }
.muted { color: var(--muted); }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 8px; top: 8px; background: #fff; padding: 6px 10px; z-index: 100; }

/* ---------- ヘッダー ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,0.96);
  border-bottom: 1px solid var(--border); backdrop-filter: blur(6px);
}
.header-inner { display: flex; align-items: center; gap: 16px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--navy); white-space: nowrap; }
.brand-mark { width: 36px; height: 36px; flex: none; }
.brand-name { font-weight: 800; font-size: 21px; letter-spacing: 0.06em; }
.brand-name b { color: var(--blue); }
.brand-sub { display: block; font-size: 10px; font-weight: 600; color: var(--muted); letter-spacing: 0.04em; line-height: 1; margin-top: 2px; }
.gnav { margin-left: auto; }
.gnav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 2px; align-items: center; }
.gnav a { display: block; padding: 8px 10px; color: var(--navy); text-decoration: none; font-weight: 700; font-size: 14px; border-radius: 6px; white-space: nowrap; }
.gnav a:hover { background: var(--bg-alt); }
.gnav a.nav-cta { background: var(--accent); color: #fff; padding: 8px 16px; margin-left: 6px; }
.gnav a.nav-cta:hover { background: #e94a27; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid var(--border); border-radius: 6px; padding: 6px 10px; font-size: 14px; font-weight: 700; color: var(--navy); cursor: pointer; }

@media (max-width: 1000px) {
  .nav-toggle { display: block; }
  .gnav { display: none; position: absolute; left: 0; right: 0; top: 64px; background: #fff; border-bottom: 1px solid var(--border); box-shadow: 0 8px 20px rgba(0,0,0,0.08); }
  .gnav.open { display: block; }
  .gnav ul { flex-direction: column; align-items: stretch; padding: 8px 16px 16px; }
  .gnav a { padding: 12px 8px; border-bottom: 1px solid var(--bg-alt); }
  .gnav a.nav-cta { margin: 10px 0 0; text-align: center; }
}

/* ---------- ボタン ---------- */
.btn { display: inline-block; padding: 12px 22px; border-radius: 999px; font-weight: 800; text-decoration: none; text-align: center; border: 2px solid transparent; line-height: 1.4; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #e94a27; }
.btn-blue { background: var(--blue); color: #fff; }
.btn-blue:hover { background: #1558c4; }
.btn-ghost { background: #fff; color: var(--navy); border-color: var(--navy); }
.btn-ghost:hover { background: var(--navy); color: #fff; }
.btn-large { padding: 15px 30px; font-size: 17px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }
.btn-row.center { justify-content: center; }

/* ---------- 節 ---------- */
.section { padding: 72px 0; }
.section-alt { background: var(--bg-alt); }
.sec-head { text-align: center; margin: 0 auto 40px; max-width: 760px; }
.sec-label { display: inline-block; font-size: 12px; font-weight: 800; letter-spacing: 0.18em; color: var(--blue); margin-bottom: 6px; }
.sec-head h2 { font-size: 30px; line-height: 1.4; margin: 0 0 12px; color: var(--navy); }
.sec-head p { margin: 0; color: var(--muted); }
@media (max-width: 640px) {
  .section { padding: 52px 0; }
  .sec-head h2 { font-size: 24px; }
}

/* ---------- ヒーロー ---------- */
.hero {
  position: relative; overflow: hidden; padding: 64px 0 56px;
  background:
    radial-gradient(900px 420px at 85% 10%, rgba(18,181,214,0.16), transparent 60%),
    radial-gradient(700px 380px at 5% 90%, rgba(31,111,235,0.12), transparent 60%),
    linear-gradient(180deg, #f7faff 0%, #ffffff 100%);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0.5;
  background-image: linear-gradient(rgba(11,31,58,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(11,31,58,0.05) 1px, transparent 1px);
  background-size: 32px 32px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 85%); mask-image: linear-gradient(180deg, #000 0%, transparent 85%);
}
.hero-grid { position: relative; display: grid; grid-template-columns: 1.05fr 1fr; gap: 40px; align-items: center; }
.hero-badge { display: inline-flex; gap: 8px; align-items: center; background: var(--navy); color: #fff; font-size: 13px; font-weight: 700; padding: 5px 14px; border-radius: 999px; }
.hero-badge i { width: 8px; height: 8px; border-radius: 50%; background: #3ee08f; box-shadow: 0 0 0 4px rgba(62,224,143,0.25); font-style: normal; }
.hero h1 { font-size: 44px; line-height: 1.3; margin: 18px 0 16px; color: var(--navy); letter-spacing: 0.01em; }
.hero h1 em { font-style: normal; background: linear-gradient(90deg, var(--blue), var(--cyan)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-lead { font-size: 17px; color: #33415a; margin: 0 0 26px; }
.hero-sports { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 26px; padding: 0; list-style: none; }
.hero-sports li { font-size: 13px; font-weight: 700; padding: 4px 12px; border-radius: 999px; background: #fff; border: 1px solid var(--border); }
.hero-sports li::before { content: "●"; margin-right: 5px; }
.hero-sports .s-boat::before { color: var(--c-boat); }
.hero-sports .s-keirin::before { color: var(--c-keirin); }
.hero-sports .s-keiba::before { color: var(--c-keiba); }
.hero-sports .s-chiho::before { color: var(--c-chiho); }
.hero-sports .s-auto::before { color: var(--c-auto); }
.hero-shot { margin: 0; background: #fff; border-radius: 12px; padding: 8px; box-shadow: 0 24px 60px rgba(11,31,58,0.18); border: 1px solid var(--border); }
.hero-shot img { border-radius: 6px; display: block; width: 100%; }
.hero-shot figcaption { font-size: 12px; color: var(--muted); padding: 8px 4px 2px; }
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
}

/* ---------- 本日のＡＩ予想カード ---------- */
.today-date { text-align: center; font-weight: 800; color: var(--navy); margin: -20px 0 24px; }
.today-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.tc {
  position: relative; display: flex; flex-direction: column; background: #fff; border: 1px solid var(--border);
  border-top: 5px solid var(--c); border-radius: 10px; text-decoration: none; color: var(--text);
  box-shadow: 0 2px 6px rgba(11,31,58,0.05); transition: transform .15s, box-shadow .15s; overflow: hidden;
}
.tc:hover { transform: translateY(-3px); box-shadow: 0 12px 26px rgba(11,31,58,0.12); }
.tc-img { aspect-ratio: 16 / 10; background: #0b1f3a center / cover no-repeat; }
.tc-body { padding: 14px 14px 16px; display: flex; flex-direction: column; flex: 1; }
.tc-sport { font-weight: 800; font-size: 17px; color: var(--navy); }
.tc-soft { font-size: 12px; color: var(--muted); margin-bottom: 8px; }
.tc-buy { font-size: 13px; color: var(--muted); }
.tc-buy b { font-size: 30px; color: var(--c); font-weight: 800; margin-right: 2px; }
.tc-sub { font-size: 12px; color: var(--muted); min-height: 1.6em; }
.tc-hit { font-size: 12px; margin-top: 6px; padding: 4px 8px; border-radius: 6px; background: var(--bg-alt); }
.tc-hit.plus { background: #fff1ee; color: #c8341a; font-weight: 700; }
.tc-go { margin-top: auto; padding-top: 10px; font-weight: 800; font-size: 14px; color: var(--c); }
.tc-boat { --c: var(--c-boat); } .tc-keirin { --c: var(--c-keirin); } .tc-keiba { --c: var(--c-keiba); }
.tc-chiho { --c: var(--c-chiho); } .tc-auto { --c: var(--c-auto); }
@media (max-width: 1000px) { .today-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px) { .today-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; } .tc-buy b { font-size: 24px; } }

/* ---------- 実績表 ---------- */
.js-tabs { display: flex; justify-content: center; gap: 8px; margin: 0 0 18px; flex-wrap: wrap; }
.js-tabs button { font: inherit; font-size: 14px; font-weight: 700; padding: 6px 16px; border-radius: 999px; border: 1px solid var(--border); background: #fff; color: var(--navy); cursor: pointer; }
.js-tabs button.on { background: var(--navy); color: #fff; border-color: var(--navy); }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--border); border-radius: 10px; background: #fff; }
.jt { width: 100%; border-collapse: collapse; min-width: 720px; font-size: 15px; }
.jt th, .jt td { padding: 12px 14px; border-bottom: 1px solid var(--border); text-align: right; white-space: nowrap; }
.jt th { background: var(--navy); color: #fff; font-size: 13px; font-weight: 700; text-align: center; }
.jt td:first-child { text-align: left; font-weight: 800; }
.jt tr:last-child td { border-bottom: none; }
.jt .dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 8px; }
.jt .plus { color: #d62b2b; font-weight: 800; }
.jt a { text-decoration: none; }
.note { font-size: 13px; color: var(--muted); margin: 12px 0 0; }

/* ---------- しくみ ---------- */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: st; margin: 0 0 36px; padding: 0; list-style: none; }
.flow li { position: relative; background: #fff; border: 1px solid var(--border); border-radius: 10px; padding: 22px 18px 18px; }
.flow li::before { counter-increment: st; content: "STEP " counter(st); display: inline-block; font-size: 11px; font-weight: 800; letter-spacing: 0.1em; color: #fff; background: var(--blue); padding: 2px 10px; border-radius: 999px; margin-bottom: 8px; }
.flow .t { display: block; font-size: 13px; font-weight: 800; color: var(--accent); }
.flow h3 { font-size: 18px; margin: 2px 0 6px; color: var(--navy); }
.flow p { margin: 0; font-size: 14px; color: #3b4860; }
@media (max-width: 900px) { .flow { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .flow { grid-template-columns: 1fr; } }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: center; }
.split h3 { font-size: 22px; color: var(--navy); margin: 0 0 10px; }
.split ul { padding-left: 1.2em; margin: 0; }
.split li { margin: 4px 0; }
.shot { margin: 0; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; background: #fff; box-shadow: 0 10px 30px rgba(11,31,58,0.1); }
.shot img { display: block; width: 100%; }
.shot figcaption { font-size: 12px; color: var(--muted); padding: 8px 12px; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }

/* 判定の3つ */
.judge3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 28px; }
.judge3 div { border-radius: 10px; padding: 16px; background: #fff; border: 1px solid var(--border); }
.judge3 b { display: inline-block; font-size: 15px; padding: 2px 12px; border-radius: 6px; color: #fff; margin-bottom: 6px; }
.judge3 p { margin: 0; font-size: 14px; }
.j-buy b { background: #d62b2b; } .j-watch b { background: #d98a00; } .j-skip b { background: #7a8699; }
@media (max-width: 640px) { .judge3 { grid-template-columns: 1fr; } }

/* ---------- ソフト ---------- */
.soft-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.soft { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.soft-top { display: flex; gap: 12px; align-items: center; padding: 16px 16px 12px; border-bottom: 4px solid var(--c); }
.soft-top img { width: 52px; height: 52px; border-radius: 10px; }
.soft-tag { font-size: 12px; font-weight: 800; color: var(--c); }
.soft-top h3 { margin: 0; font-size: 19px; color: var(--navy); line-height: 1.3; }
.soft-shot { display: block; aspect-ratio: 16 / 9; background: #0b1f3a center top / cover no-repeat; }
.soft-body { padding: 14px 16px 18px; display: flex; flex-direction: column; flex: 1; }
.soft-body ul { margin: 0 0 12px; padding-left: 1.2em; font-size: 14px; }
.soft-body li { margin: 3px 0; }
.price { margin-top: auto; border-top: 1px dashed var(--border); padding-top: 12px; }
.price s { color: var(--muted); font-size: 13px; }
.price strong { display: block; font-size: 26px; color: var(--accent); line-height: 1.3; }
.price strong small { font-size: 13px; color: var(--text); font-weight: 700; }
.price .cond { font-size: 12px; color: var(--muted); }
.soft-links { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.soft-links a { flex: 1; min-width: 120px; font-size: 14px; padding: 9px 10px; }
.soft-boat { --c: var(--c-boat); } .soft-keirin { --c: var(--c-keirin); } .soft-keiba { --c: var(--c-keiba); }
.soft-chiho { --c: var(--c-chiho); } .soft-auto { --c: var(--c-auto); }
.soft-key { --c: var(--navy); background: linear-gradient(160deg, #0b1f3a, #163a6b); color: #e8eefb; border: none; }
.soft-key .soft-top { border-bottom-color: var(--cyan); }
.soft-key h3, .soft-key .soft-tag { color: #fff; }
.soft-key .price { border-top-color: rgba(255,255,255,0.25); }
.soft-key .price strong { color: #ffd34d; }
.soft-key .price strong small, .soft-key .price .cond { color: #c7d3ea; }
.soft-key .soft-shot { background-color: #fff; background-size: contain; background-position: center; }
@media (max-width: 1000px) { .soft-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .soft-grid { grid-template-columns: 1fr; } }

/* ---------- 料金・購入の流れ ---------- */
.buy-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 0; padding: 0; list-style: none; counter-reset: bs; }
.buy-steps li { background: #fff; border: 1px solid var(--border); border-radius: 10px; padding: 16px; font-size: 14px; }
.buy-steps li::before { counter-increment: bs; content: counter(bs); display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--navy); color: #fff; font-weight: 800; margin-bottom: 6px; }
.buy-steps b { display: block; font-size: 16px; color: var(--navy); }
@media (max-width: 800px) { .buy-steps { grid-template-columns: 1fr 1fr; } }

/* ---------- FAQ ---------- */
.faq { max-width: 860px; margin: 0 auto; }
.faq details { background: #fff; border: 1px solid var(--border); border-radius: 10px; margin-bottom: 10px; }
.faq summary { cursor: pointer; padding: 16px 44px 16px 18px; font-weight: 800; color: var(--navy); list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "Q"; color: var(--blue); margin-right: 10px; }
.faq summary::after { content: "＋"; position: absolute; right: 18px; top: 15px; color: var(--muted); }
.faq details[open] summary::after { content: "－"; }
.faq .a { padding: 0 18px 16px 42px; margin: 0; font-size: 15px; }

/* ---------- CTA ---------- */
.cta { background: linear-gradient(120deg, var(--navy) 0%, #15407a 60%, #127ea3 100%); color: #fff; text-align: center; padding: 64px 0; }
.cta h2 { font-size: 28px; margin: 0 0 10px; }
.cta p { margin: 0 0 24px; color: #d6e2f5; }
.cta .btn-ghost { background: transparent; color: #fff; border-color: #fff; }
.cta .btn-ghost:hover { background: #fff; color: var(--navy); }

/* ---------- 下層ページ ---------- */
.page-head { background: linear-gradient(180deg, #f3f7fd, #fff); border-bottom: 1px solid var(--border); padding: 36px 0 28px; }
.page-head h1 { margin: 0; font-size: 30px; color: var(--navy); line-height: 1.35; }
.page-head p { margin: 8px 0 0; color: var(--muted); }
.crumb { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.crumb a { color: var(--muted); }
.doc { max-width: 900px; margin: 0 auto; padding: 40px 16px 72px; }
.doc h2 { font-size: 20px; color: var(--navy); border-left: 5px solid var(--blue); padding-left: 10px; margin: 32px 0 10px; }
.doc table { width: 100%; border-collapse: collapse; font-size: 15px; }
.doc th, .doc td { border: 1px solid var(--border); padding: 12px 14px; vertical-align: top; text-align: left; }
.doc th { background: var(--bg-alt); width: 26%; color: var(--navy); }
@media (max-width: 640px) {
  .doc th, .doc td { display: block; width: 100%; }
  .doc th { border-bottom: none; }
  .page-head h1 { font-size: 24px; }
}

/* 予想ページの競技切り替え */
.sport-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 24px; }
.sport-tabs a { flex: 1; min-width: 120px; text-align: center; padding: 10px 8px; border-radius: 10px; border: 1px solid var(--border); border-top: 4px solid var(--c); text-decoration: none; color: var(--navy); font-weight: 800; background: #fff; }
.sport-tabs a.on { background: var(--c); color: #fff; border-color: var(--c); }
.sport-tabs .st-boat { --c: var(--c-boat); } .sport-tabs .st-keirin { --c: var(--c-keirin); } .sport-tabs .st-keiba { --c: var(--c-keiba); }
.sport-tabs .st-chiho { --c: var(--c-chiho); } .sport-tabs .st-auto { --c: var(--c-auto); }
.yosou-note { background: var(--bg-alt); border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px; font-size: 14px; margin-top: 28px; }
.yosou-hero { padding: 28px 0 20px; border-bottom: 1px solid var(--border); background: linear-gradient(180deg, #f3f7fd, #fff); }
.yosou-hero .inner { display: flex; gap: 16px; align-items: center; }
.yosou-hero img { width: 72px; height: 72px; border-radius: 14px; flex: none; }
.yosou-hero h1 { margin: 0; font-size: 26px; color: var(--navy); line-height: 1.35; }
.yosou-hero p { margin: 4px 0 0; color: var(--muted); font-size: 14px; }

/* ---------- フッター ---------- */
.site-footer { background: #0a1628; color: #b9c5d8; padding: 48px 0 24px; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 28px; }
.site-footer h4 { color: #fff; font-size: 14px; margin: 0 0 10px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: 6px 0; }
.site-footer a { color: #b9c5d8; text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.footer-brand .brand { color: #fff; margin-bottom: 10px; }
.footer-brand .brand-name b { color: #6fb6ff; }
.footer-brand .brand-sub { color: #8fa0bb; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); margin-top: 32px; padding-top: 18px; font-size: 12px; color: #7f8ea8; }
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-brand { grid-column: 1 / -1; } }

section[id], article[id] { scroll-margin-top: 76px; }