/* ============ tokens（漆黒×ビビッドレッド×白 / ボールド・スポーティ） ============ */
:root {
  --black: #0a0a0a;
  --black2: #141414;
  --panel: #1a1a1a;
  --white: #ffffff;
  --smoke: #b9b9b9;
  --red: #e8332a;
  --red-dark: #b71f18;
  --line: #2b2b2b;

  --font-disp: 'Anton', 'Noto Sans JP', sans-serif;   /* 極太タイポ */
  --font-en: 'Archivo Black', sans-serif;
  --font-body: 'Noto Sans JP', sans-serif;
  --ease-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --skew: -8deg;
  --page-progress: 0;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body); background: var(--black); color: var(--white);
  line-height: 1.85; overflow-x: hidden; font-weight: 700;
}
a { color: inherit; text-decoration: none; }
video { display: block; }

/* 注: デモのため prefers-reduced-motion では止めない */

[data-reveal] { opacity: 0; transform: translateY(50px) skewX(-2deg); transition: opacity 0.9s var(--ease-expo), transform 0.9s var(--ease-expo); }
[data-reveal].is-visible { opacity: 1; transform: none; }

/* ============ 平行四辺形の共通パーツ ============ */
.skew-btn {
  display: inline-block; transform: skewX(var(--skew)); background: var(--red); color: var(--white);
  padding: 16px 40px; font-family: var(--font-disp); letter-spacing: 0.08em; font-size: 1.05rem;
  border: 0; cursor: pointer; transition: background 0.25s, transform 0.25s var(--ease-expo);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.5);
}
.skew-btn span { display: inline-block; transform: skewX(calc(var(--skew) * -1)); }
.skew-btn:hover { background: var(--white); color: var(--black); transform: skewX(var(--skew)) translate(-3px, -3px); }

.skew-card { transform: skewX(var(--skew)); }
.skew-card .prog-inner, .skew-card .plan-inner { transform: skewX(calc(var(--skew) * -1)); }

/* ============ loader ============ */
.loader {
  position: fixed; inset: 0; z-index: 300; background: var(--black);
  display: grid; place-items: center; overflow: hidden;
  transition: clip-path 0.7s var(--ease-expo), visibility 0.7s;
  clip-path: inset(0 0 0 0);
}
.loader.done { clip-path: inset(0 0 100% 0); visibility: hidden; }
.loader-bar { position: absolute; left: 0; right: 0; top: 50%; height: 3px; background: var(--red); transform: scaleX(0); transform-origin: left; animation: barGrow 0.8s var(--ease-expo) forwards; }
@keyframes barGrow { to { transform: scaleX(1); } }
.loader-logo { font-family: var(--font-en); font-size: 2rem; letter-spacing: 0.2em; background: var(--black); padding: 10px 24px; position: relative; z-index: 2; }
.loader-logo i, .brand i, .footer-logo i { color: var(--red); font-style: normal; }

/* ============ progress / header ============ */
.page-progress { position: fixed; top: 0; left: 0; right: 0; height: 4px; z-index: 150; background: var(--red); transform: scaleX(var(--page-progress)); transform-origin: left; will-change: transform; }
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 140; display: flex; align-items: center; gap: 30px; padding: 18px 30px; mix-blend-mode: difference; }
.brand { font-family: var(--font-en); letter-spacing: 0.18em; font-size: 1.25rem; margin-right: auto; }
.header-nav { display: none; gap: 30px; font-size: 0.9rem; font-weight: 900; letter-spacing: 0.04em; }
@media (min-width: 940px) { .header-nav { display: flex; } }
.header-nav a { position: relative; padding: 4px 0; }
.header-nav a::after { content: ''; position: absolute; left: 0; bottom: -2px; width: 100%; height: 3px; background: var(--red); transform: scaleX(0) skewX(var(--skew)); transform-origin: right; transition: transform 0.35s var(--ease-expo); }
.header-nav a:hover::after { transform: scaleX(1) skewX(var(--skew)); transform-origin: left; }
.menu-btn { background: none; border: 0; cursor: pointer; display: flex; flex-direction: column; gap: 7px; padding: 8px; }
.menu-btn i { width: 32px; height: 3px; background: var(--white); transform: skewX(var(--skew)); transition: transform 0.35s var(--ease-expo); }
.menu-btn.open i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.menu-btn.open i:nth-child(2) { transform: translateY(-5px) rotate(-45deg); }

/* ============ menu overlay（赤が斜めに走る） ============ */
.menu-overlay { position: fixed; inset: 0; z-index: 130; background: var(--red); clip-path: polygon(100% 0, 100% 0, 100% 100%, 100% 100%); transition: clip-path 0.6s var(--ease-expo); visibility: hidden; }
.menu-overlay.open { clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%); visibility: visible; }
.menu-overlay nav { height: 100%; display: flex; align-items: center; padding: 0 12vw; }
.menu-overlay ul { list-style: none; }
.menu-overlay li { opacity: 0; transform: translateX(60px) skewX(var(--skew)); transition: opacity 0.5s var(--ease-expo), transform 0.5s var(--ease-expo); }
.menu-overlay.open li { opacity: 1; transform: skewX(var(--skew)); }
.menu-overlay a { display: flex; align-items: baseline; gap: 20px; padding: 10px 4px; }
.menu-overlay small { font-family: var(--font-en); color: var(--black); font-size: 0.9rem; }
.menu-overlay span { font-family: var(--font-disp); font-size: clamp(2.6rem, 9vw, 5.5rem); color: var(--white); -webkit-text-stroke: 1px var(--white); transition: color 0.25s, -webkit-text-stroke 0.25s; }
.menu-overlay a:hover span { color: transparent; }

/* ============ hero ============ */
.hero { position: relative; min-height: 100vh; overflow: hidden; display: flex; align-items: center; background: var(--black); clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%); }
.hero-video-wrap { position: absolute; inset: 0; }
.hero-video {
  width: 100%; height: 100%; object-fit: cover;
  transform: scale(calc(1 + var(--sp, 0) * 0.2)) translateY(calc(var(--sp, 0) * 60px));
  will-change: transform; opacity: 0.72;
}
.hero-veil { position: absolute; inset: 0; background: linear-gradient(105deg, #0a0a0af2 0%, #0a0a0ab0 42%, #0a0a0a44 78%, #e8332a22 100%); }
.hero-scanline { position: absolute; inset: 0; background: repeating-linear-gradient(0deg, transparent 0 3px, rgba(0,0,0,0.18) 3px 4px); pointer-events: none; opacity: 0.5; }
.hero-side {
  position: absolute; top: 50%; right: 3vw; transform: translateY(-50%) rotate(180deg); z-index: 3;
  writing-mode: vertical-rl; font-family: var(--font-en); font-size: clamp(0.7rem, 1.1vw, 0.95rem);
  letter-spacing: 0.45em; color: var(--red);
}
.hero-inner { position: relative; z-index: 2; padding: 0 7vw; max-width: 1200px; }
.hero-en { font-family: var(--font-en); letter-spacing: 0.35em; font-size: clamp(0.7rem, 1.2vw, 0.95rem); color: var(--red); margin-bottom: 18px; }
.hero-title { font-family: var(--font-disp); font-weight: 400; font-size: clamp(3.4rem, 12vw, 10rem); line-height: 0.94; letter-spacing: 0.01em; font-style: italic; }
.hero-slam { display: block; opacity: 0; transform: translateY(0.7em) skewX(-10deg); animation: slam 0.7s var(--ease-expo) forwards; }
.hero-slam:nth-child(2) { color: var(--red); }
@keyframes slam { 60% { opacity: 1; transform: translateY(-0.05em) skewX(-8deg); } to { opacity: 1; transform: skewX(-8deg); } }
.hero-sub { max-width: 540px; margin-top: 30px; color: var(--smoke); font-size: 0.95rem; font-weight: 500; opacity: 0; animation: fadeUp 0.9s var(--ease-expo) 1.5s forwards; }
.hero-cta { margin-top: 36px; opacity: 0; animation: fadeUp 0.9s var(--ease-expo) 1.7s forwards; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }
.hero-scroll { position: absolute; right: 7vw; bottom: 8vh; z-index: 3; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.hero-scroll span { font-family: var(--font-en); font-size: 0.6rem; letter-spacing: 0.3em; color: var(--smoke); }
.hero-scroll i { width: 2px; height: 60px; background: var(--red); transform-origin: top; animation: scrollLine 1.8s var(--ease-expo) infinite; }
@keyframes scrollLine { 0% { transform: scaleY(0); } 55% { transform: scaleY(1); transform-origin: top; } 56% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ============ 斜め赤ストライプ帯 ============ */
.diag-stripe { background: var(--red); overflow: hidden; padding: 22px 0; transform: skewY(-2.5deg); margin: -3vh 0; position: relative; z-index: 5; box-shadow: 0 0 60px rgba(232,51,42,0.4); }
.ds-track { white-space: nowrap; transform: skewY(2.5deg); will-change: transform; animation: dsMove 30s linear infinite; }
.ds-track span { display: inline-block; font-family: var(--font-disp); font-size: clamp(1.6rem, 3.4vw, 2.6rem); color: var(--black); letter-spacing: 0.04em; }
@keyframes dsMove { from { transform: skewY(2.5deg) translateX(0); } to { transform: skewY(2.5deg) translateX(-50%); } }

/* ============ 見出し（画面を横切ってスライドイン） ============ */
.sec-heading { position: relative; font-family: var(--font-disp); font-weight: 400; font-size: clamp(2.6rem, 7vw, 5.5rem); line-height: 1; font-style: italic; letter-spacing: 0.01em; padding: 0 7vw; margin-bottom: clamp(40px, 6vw, 70px); }
.sec-heading .sh-en { display: block; font-family: var(--font-en); font-style: normal; font-size: clamp(0.75rem, 1.4vw, 1rem); letter-spacing: 0.4em; color: var(--red); margin-bottom: 14px; }

/* ============ program（斜めカード） ============ */
.program { padding: clamp(90px, 12vw, 150px) 0; background: var(--black); }
.prog-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 26px; padding: 0 7vw; }
.prog-card { background: var(--panel); border: 2px solid var(--line); overflow: hidden; transition: background 0.3s, border-color 0.3s, transform 0.35s var(--ease-expo); }
.prog-inner { padding: 40px 32px; display: block; }
.prog-card:hover { background: var(--red); border-color: var(--red); transform: skewX(var(--skew)) translateY(-8px); }
.prog-icon { font-size: 2.6rem; display: inline-block; transition: transform 0.35s var(--ease-expo); }
.prog-card:hover .prog-icon { transform: translateY(-10px) scale(1.15); }
.prog-no { display: block; font-family: var(--font-en); font-size: 0.9rem; color: var(--red); letter-spacing: 0.2em; margin: 14px 0 6px; transition: color 0.3s; }
.prog-card:hover .prog-no { color: var(--black); }
.prog-card h3 { font-family: var(--font-disp); font-weight: 400; font-size: 1.9rem; letter-spacing: 0.03em; }
.prog-card h3 small { display: block; font-family: var(--font-en); font-size: 0.68rem; letter-spacing: 0.24em; color: var(--smoke); margin-top: 8px; transition: color 0.3s; }
.prog-card:hover h3 small { color: #3a0705; }
.prog-card p { margin-top: 16px; font-size: 0.86rem; font-weight: 500; color: var(--smoke); transition: color 0.3s; }
.prog-card:hover p { color: var(--white); }

/* ============ price（斜め切り背景・3プラン） ============ */
.price { padding: clamp(90px, 12vw, 160px) 0; background: var(--black2); clip-path: polygon(0 3vw, 100% 0, 100% calc(100% - 3vw), 0 100%); }
.plan-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 26px; padding: 0 7vw; align-items: stretch; }
.plan-card { background: var(--panel); border: 2px solid var(--line); transition: transform 0.35s var(--ease-expo); }
.plan-inner { padding: 44px 34px; height: 100%; display: flex; flex-direction: column; }
.plan-card.rec { background: linear-gradient(160deg, var(--red) 0%, var(--red-dark) 100%); border-color: var(--red); box-shadow: 0 20px 60px rgba(232,51,42,0.35); transform: skewX(var(--skew)) scale(1.04); z-index: 2; }
.plan-card:hover { transform: skewX(var(--skew)) translateY(-8px); }
.plan-card.rec:hover { transform: skewX(var(--skew)) scale(1.04) translateY(-8px); }
.plan-badge { align-self: flex-start; font-family: var(--font-disp); background: var(--black); color: var(--red); padding: 6px 20px; letter-spacing: 0.1em; margin-bottom: 18px; }
.plan-en { font-family: var(--font-en); font-size: 0.72rem; letter-spacing: 0.3em; color: var(--red); }
.plan-card.rec .plan-en { color: var(--black); }
.plan-name { font-family: var(--font-disp); font-weight: 400; font-size: 2.1rem; margin: 4px 0 16px; letter-spacing: 0.03em; }
.plan-price { display: flex; align-items: baseline; gap: 4px; }
.plan-price .yen { font-family: var(--font-disp); font-size: 1.6rem; color: var(--red); }
.plan-card.rec .plan-price .yen { color: var(--black); }
.plan-price strong { font-family: var(--font-en); font-size: clamp(2.6rem, 5vw, 3.6rem); line-height: 1; }
.plan-unit { color: var(--smoke); font-size: 0.8rem; margin: 6px 0 22px; }
.plan-card.rec .plan-unit { color: #2a0403; }
.plan-feats { list-style: none; display: grid; gap: 12px; margin-bottom: 30px; flex: 1; }
.plan-feats li { position: relative; padding-left: 24px; font-size: 0.85rem; font-weight: 500; }
.plan-feats li::before { content: '▸'; position: absolute; left: 0; color: var(--red); font-weight: 900; }
.plan-card.rec .plan-feats li::before { color: var(--black); }
.plan-card.rec .plan-btn { background: var(--black); }
.plan-card.rec .plan-btn:hover { background: var(--white); color: var(--black); }
.plan-btn { align-self: flex-start; }

/* ============ trainer（モノクロ→ホバー赤差し色） ============ */
.trainer { padding: clamp(90px, 12vw, 160px) 0; background: var(--black); }
.trainer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 22px; padding: 0 7vw; }
.trainer-card { position: relative; overflow: hidden; border: 2px solid var(--line); background: var(--panel); transition: border-color 0.3s, transform 0.35s var(--ease-expo); }
.trainer-card:hover { border-color: var(--red); transform: translateY(-6px); }
.trainer-photo { position: relative; height: 260px; display: grid; place-items: center; background: repeating-linear-gradient(135deg, #202020 0 14px, #171717 14px 28px); filter: grayscale(1); transition: filter 0.4s; }
.trainer-card:hover .trainer-photo { filter: grayscale(0); background: repeating-linear-gradient(135deg, var(--red-dark) 0 14px, #7a140f 14px 28px); }
.tp-en { font-family: var(--font-disp); font-size: 2.4rem; color: rgba(255,255,255,0.2); letter-spacing: 0.05em; transition: color 0.4s; }
.trainer-card:hover .tp-en { color: rgba(255,255,255,0.9); }
.trainer-meta { padding: 24px 22px; }
.trainer-meta h3 { font-family: var(--font-disp); font-weight: 400; font-size: 1.5rem; letter-spacing: 0.03em; }
.tm-spec { color: var(--red); font-size: 0.85rem; font-weight: 900; margin-top: 8px; }
.tm-years { color: var(--smoke); font-size: 0.75rem; font-weight: 500; margin-top: 4px; }

/* ============ trial（赤背景巨大CTA・斜め切り） ============ */
.trial { position: relative; background: var(--red); color: var(--black); text-align: center; padding: clamp(110px, 15vw, 200px) 7vw; clip-path: polygon(0 4vw, 100% 0, 100% 100%, 0 100%); overflow: hidden; }
.trial::before { content: 'IGNIS'; position: absolute; inset: 0; display: grid; place-items: center; font-family: var(--font-disp); font-size: 40vw; color: rgba(0,0,0,0.06); pointer-events: none; }
.trial > * { position: relative; z-index: 2; }
.trial-slots { display: inline-flex; align-items: baseline; gap: 10px; background: var(--black); color: var(--white); padding: 12px 28px; transform: skewX(var(--skew)); margin-bottom: 40px; }
.trial-slots > * { transform: skewX(calc(var(--skew) * -1)); }
.ts-label { font-weight: 900; font-size: 0.85rem; }
.ts-num { font-family: var(--font-en); font-size: 2.2rem; color: var(--red); line-height: 1; }
.ts-unit { font-weight: 900; font-size: 0.85rem; }
.trial-head { font-family: var(--font-disp); font-weight: 400; font-size: clamp(2.6rem, 8vw, 6rem); line-height: 1.05; font-style: italic; letter-spacing: 0.01em; }
.trial-body { margin: 24px auto 54px; max-width: 560px; font-weight: 700; }
.magnet-btn {
  display: inline-grid; place-items: center; width: 190px; height: 190px; border-radius: 50%;
  background: var(--black); color: var(--white); font-family: var(--font-disp); font-size: 1.3rem; letter-spacing: 0.08em;
  transition: background 0.3s, color 0.3s; will-change: transform; border: 3px solid var(--black);
}
.magnet-btn:hover { background: var(--white); color: var(--black); }

/* ============ footer ============ */
.site-footer { background: var(--black); padding-top: clamp(50px, 7vw, 80px); }
.footer-main { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; padding: 0 7vw clamp(40px, 6vw, 70px); border-bottom: 1px solid var(--line); }
.footer-logo { font-family: var(--font-en); font-size: 1.8rem; letter-spacing: 0.16em; }
.footer-name { margin-top: 12px; font-weight: 900; }
.footer-addr { color: var(--smoke); font-size: 0.78rem; font-weight: 500; margin-top: 6px; }
.footer-main ul { list-style: none; display: grid; gap: 6px; }
.footer-main nav a { display: flex; gap: 14px; align-items: baseline; font-weight: 900; padding: 4px 0; transition: color 0.25s; }
.footer-main nav a:hover { color: var(--red); }
.footer-main nav small { font-family: var(--font-en); color: var(--red); font-size: 0.72rem; }
.footer-copy { text-align: center; color: #5a5a5a; font-size: 0.72rem; font-weight: 500; padding: 26px 0 32px; }

/* ============ mobile ============ */
@media (max-width: 700px) {
  .hero { clip-path: polygon(0 0, 100% 0, 100% 96%, 0 100%); }
  .hero-side { display: none; }
  .plan-card.rec { transform: skewX(var(--skew)); }
  .plan-card.rec:hover { transform: skewX(var(--skew)) translateY(-8px); }
}