/* ===== iPhone Pro “黒チタン×キラキラ”テーマ 共通CSS ===== */
:root{--bg:#0a0b0d;--panel:#0e1115;--line:#1a2230;--text:#f2f6fa;--muted:#9aa7b5;--brand:#7dd3ff;--brand2:#bfe6ff;--radius:22px;--blur:22px;--dur:.9s}
@media (prefers-color-scheme: light){:root{--bg:#f7f8fb;--panel:#fff;--line:#e5eaf0;--text:#101418;--muted:#687382;--brand:#0077ff;--brand2:#5bb2ff}}
*{box-sizing:border-box}html,body{height:100%}
body{margin:0;color:var(--text);background:
 radial-gradient(1200px 800px at 110% -10%, rgba(125,211,255,.06), transparent 60%),
 radial-gradient(900px 700px at -10% -10%, rgba(191,230,255,.05), transparent 55%),var(--bg);
font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Segoe UI",Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;letter-spacing:-.01em}
a{color:inherit}

/* 背景きらめき */
.bg{position:fixed;inset:0;pointer-events:none;z-index:-1}
.stars,.stars::before,.stars::after{content:"";position:absolute;inset:0;background:
 radial-gradient(2px 2px at 15% 20%, rgba(255,255,255,.35), transparent 60%),
 radial-gradient(2px 2px at 80% 30%, rgba(191,230,255,.45), transparent 60%),
 radial-gradient(1px 1px at 40% 70%, rgba(255,255,255,.3), transparent 60%),
 radial-gradient(1.5px 1.5px at 65% 85%, rgba(191,230,255,.35), transparent 60%);animation:sparkle var(--dur) linear infinite;opacity:.5}
.stars::before{animation-delay:.2s;opacity:.35}.stars::after{animation-delay:.6s;opacity:.25}
@keyframes sparkle{0%,100%{filter:brightness(1)}50%{filter:brightness(1.25)}}

/* ナビ */
.nav{position:sticky;top:0;backdrop-filter:saturate(160%) blur(18px);background:color-mix(in hsl, var(--bg), transparent 72%);border-bottom:1px solid color-mix(in hsl, var(--line), transparent 30%);z-index:50}
.row{max-width:1180px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo{display:inline-block;width:34px;height:34px;border-radius:9px;background:url("/images/logo.gif") center/contain no-repeat;box-shadow:0 0 0 1px rgba(125,211,255,.18) inset}
.brand-text{font-weight:600;opacity:.96}
.menu{display:flex;align-items:center;gap:20px}
.menu a{opacity:.82;text-decoration:none;transition:.25s}
.menu a:hover{opacity:1;color:var(--brand)}
.btn{display:inline-flex;align-items:center;justify-content:center;height:42px;padding:0 20px;border-radius:999px;border:1px solid color-mix(in hsl, var(--line), transparent 10%);text-decoration:none;transition:.3s cubic-bezier(.4,0,.2,1)}
.btn.titanium{background:linear-gradient(180deg,#1a1f27,#12151a);box-shadow:inset 0 1px 0 rgba(255,255,255,.05),0 10px 30px rgba(0,0,0,.35)}
.btn.titanium:hover{transform:translateY(-1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 14px 34px rgba(0,0,0,.45)}
.btn.primary{background:linear-gradient(180deg, var(--brand), var(--brand2));color:#031a28;border-color:rgba(0,0,0,.35)}
.btn.primary:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn.ghost{background:transparent}
.btn.ghost:hover{background:color-mix(in hsl, var(--brand), transparent 92%)}

/* 共通ヒーロー */
.hero{max-width:1180px;margin:0 auto;padding:84px 24px 36px;text-align:center}
.subhero{max-width:1180px;margin:0 auto;padding:56px 24px 0;text-align:center}
.pill{display:inline-block;padding:6px 14px;border:1px solid color-mix(in hsl, var(--line), transparent 20%);border-radius:999px;font-size:13px;opacity:.8;letter-spacing:.05em}
.titan-title{margin:.6em 0 .3em;font-size:clamp(36px,5.4vw,64px);font-weight:700;line-height:1.08;letter-spacing:-.02em;background:linear-gradient(180deg,#eaf6ff,#cbe8ff 35%,#84cfff 60%,#7fb9ff);-webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:0 12px 30px rgba(127,185,255,.15)}
.lead{font-size:clamp(16px,2.1vw,20px);line-height:1.8;color:var(--muted);max-width:760px;margin:0 auto}
.cta{display:flex;justify-content:center;gap:14px;margin-top:26px}

/* デバイス風フレーム */
.hero-device{margin:56px auto 0;max-width:960px;position:relative;aspect-ratio:16/9;border-radius:28px}
.hero-device .rim{position:absolute;inset:-2px;border-radius:30px;background:
 linear-gradient(140deg, rgba(255,255,255,.14), rgba(255,255,255,.02) 30%, rgba(0,0,0,.35) 60%, rgba(191,230,255,.12) 95%);box-shadow:0 6px 40px rgba(0,0,0,.45), inset 0 0 0 1px rgba(255,255,255,.05);pointer-events:none}
.hero-device .screen{position:absolute;inset:0;border-radius:28px;overflow:hidden;border:1px solid color-mix(in hsl, var(--line), transparent 10%);background:linear-gradient(180deg,#0f1216,#0a0c0f)}
.hero-device .screen img{width:100%;height:100%;object-fit:cover;opacity:.35;transition:.5s}
.hero-device:hover .screen img{opacity:.48}
.reflection{position:absolute;inset:0;pointer-events:none;background:linear-gradient(105deg, rgba(255,255,255,.06) 0%, transparent 35%, transparent 65%, rgba(255,255,255,.05) 100%);mix-blend-mode:screen;opacity:.6;animation:glide 6s ease-in-out infinite}
@keyframes glide{0%,100%{transform:translateX(-10%)}50%{transform:translateX(6%)}}

/* セクション・ガラスパネル・カード */
.section{padding:64px 24px}
.container{max-width:1180px;margin:0 auto}
.prose h2{font-size:28px;margin:0 0 14px}
.prose p{line-height:1.9;color:var(--muted)}
.glass{background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01));border:1px solid color-mix(in hsl, var(--line), transparent 10%);border-radius:var(--radius);padding:24px;backdrop-filter:blur(var(--blur));box-shadow:0 10px 30px rgba(0,0,0,.25)}
.cards{display:grid;gap:18px;margin-top:22px}
@media(min-width:900px){.cards{grid-template-columns:repeat(3,1fr)}}
.card{position:relative;background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01));border:1px solid color-mix(in hsl, var(--line), transparent 10%);border-radius:var(--radius);padding:24px;min-height:150px;transition:.35s cubic-bezier(.4,0,.2,1);backdrop-filter:blur(var(--blur));box-shadow:0 10px 30px rgba(0,0,0,.22)}
.card::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;background:linear-gradient(140deg, rgba(191,230,255,.08), transparent 40%, transparent 60%, rgba(125,211,255,.08));opacity:0;transition:.35s}
.card:hover{transform:translateY(-4px);border-color:color-mix(in hsl, var(--brand), transparent 70%)}.card:hover::after{opacity:.9}
.card h3{margin:6px 0 8px;font-size:19px}.card p{margin:0;color:var(--muted);line-height:1.8}

/* 一覧テーブル（ルールやスケジュール） */
.table{width:100%;border-collapse:separate;border-spacing:0;border:1px solid color-mix(in hsl, var(--line), transparent 10%);border-radius:16px;overflow:hidden}
.table th,.table td{padding:14px 16px;border-bottom:1px solid color-mix(in hsl, var(--line), transparent 15%);text-align:left}
.table thead th{background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));font-weight:600}
.table tr:last-child td{border-bottom:none}
.badge{display:inline-block;padding:4px 8px;border:1px solid color-mix(in hsl, var(--line), transparent 20%);border-radius:999px;font-size:12px;color:var(--muted)}

/* ギャラリー・フッター */
.gallery{display:grid;gap:14px}
@media(min-width:800px){.gallery{grid-template-columns:repeat(3,1fr)}}
.placeholder{display:grid;place-items:center;height:180px;border:1px dashed color-mix(in hsl, var(--line), transparent 10%);border-radius:var(--radius);color:var(--muted);background:linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,.01))}
.footer{border-top:1px solid color-mix(in hsl, var(--line), transparent 20%);padding:30px 24px;margin-top:80px}
.footer-inner{max-width:1180px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.muted{color:var(--muted)}
:focus-visible{outline:2px solid var(--brand);outline-offset:4px}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.sp-br{display:none}@media(max-width:560px){.sp-br{display:inline}}