/* ===== VARIABLES ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
    --bg-primary:#0a0a0c;--bg-secondary:#111115;--bg-card:#16161a;--bg-card-hover:#1c1c22;
    --red-primary:#c41e2e;--red-glow:#e63946;--red-deep:#8b1a1a;
    --gold-primary:#d4a843;--gold-light:#f0d078;--gold-dark:#a07828;
    --text-primary:#eaeaea;--text-secondary:#9a9aaa;--text-muted:#5a5a6a;
    --border-subtle:rgba(255,255,255,0.06);--border-gold:rgba(212,168,67,0.3);
}
html{scroll-behavior:smooth}
body{font-family:'Inter','Noto Sans JP',sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.7;overflow-x:hidden}

/* ===== NAVBAR ===== */
.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;padding:0.8rem 1.5rem;transition:all 0.3s ease}
.navbar.scrolled{background:rgba(10,10,12,0.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border-subtle)}
.navbar-inner{max-width:1000px;margin:0 auto;display:flex;align-items:center;justify-content:space-between}
.navbar-logo{display:flex;align-items:center;gap:0.5rem;text-decoration:none;color:var(--gold-light);font-weight:800;font-size:1.1rem;letter-spacing:0.05em}
.navbar-logo-img{height:28px;width:auto}
.navbar-links{display:flex;list-style:none;gap:1.8rem}
.navbar-links a{color:var(--text-muted);text-decoration:none;font-size:0.82rem;font-weight:500;transition:color 0.2s;letter-spacing:0.02em}
.navbar-links a:hover{color:var(--text-primary)}
.navbar-toggle{display:none;background:none;border:none;cursor:pointer;padding:0.5rem;flex-direction:column;gap:5px}
.navbar-toggle span{display:block;width:22px;height:2px;background:var(--text-secondary);transition:all 0.3s}
.navbar-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.navbar-toggle.active span:nth-child(2){opacity:0}
.navbar-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* ===== HERO ===== */
.hero{position:relative;min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:6rem 1.5rem 2rem;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 80% 60% at 50% 40%,rgba(196,30,46,0.12) 0%,transparent 70%),radial-gradient(ellipse 60% 50% at 50% 100%,rgba(212,168,67,0.06) 0%,transparent 60%);pointer-events:none}
.hero::after{content:'';position:absolute;bottom:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--red-deep),var(--gold-dark),var(--red-deep),transparent)}
.hero-particles{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.hero-particles span{position:absolute;border-radius:50%;background:rgba(196,30,46,0.15);animation:float-particle linear infinite}
.hero-particles span:nth-child(1){width:4px;height:4px;left:10%;animation-duration:18s;animation-delay:0s}
.hero-particles span:nth-child(2){width:3px;height:3px;left:25%;animation-duration:22s;animation-delay:3s;background:rgba(212,168,67,0.12)}
.hero-particles span:nth-child(3){width:5px;height:5px;left:45%;animation-duration:16s;animation-delay:1s}
.hero-particles span:nth-child(4){width:3px;height:3px;left:65%;animation-duration:20s;animation-delay:5s;background:rgba(212,168,67,0.1)}
.hero-particles span:nth-child(5){width:4px;height:4px;left:80%;animation-duration:24s;animation-delay:2s}
.hero-particles span:nth-child(6){width:2px;height:2px;left:90%;animation-duration:19s;animation-delay:4s;background:rgba(212,168,67,0.12)}
@keyframes float-particle{0%{transform:translateY(100vh) scale(0);opacity:0}10%{opacity:1}90%{opacity:1}100%{transform:translateY(-10vh) scale(1.5);opacity:0}}
.hero-logo{width:min(420px,80vw);margin-bottom:1.5rem;filter:drop-shadow(0 0 40px rgba(196,30,46,0.25)) drop-shadow(0 0 80px rgba(212,168,67,0.1));animation:logo-entrance 1.2s cubic-bezier(0.16,1,0.3,1) both}
@keyframes logo-entrance{0%{opacity:0;transform:scale(0.85) translateY(20px)}100%{opacity:1;transform:scale(1) translateY(0)}}
.hero-title{font-size:clamp(2rem,5vw,3.5rem);font-weight:900;letter-spacing:0.08em;background:linear-gradient(135deg,var(--gold-light) 0%,var(--gold-primary) 40%,var(--gold-dark) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:0.5rem;animation:fade-up 0.8s 0.3s both}
.hero-subtitle{font-size:clamp(1rem,2.5vw,1.4rem);font-weight:500;color:var(--text-primary);margin-bottom:0.75rem;animation:fade-up 0.8s 0.5s both}
.hero-lead{font-size:clamp(0.85rem,1.8vw,1rem);color:var(--text-secondary);max-width:600px;animation:fade-up 0.8s 0.7s both}
@keyframes fade-up{0%{opacity:0;transform:translateY(24px)}100%{opacity:1;transform:translateY(0)}}
.hero-cta{margin-top:2.5rem;animation:fade-up 0.8s 0.9s both;display:flex;gap:1rem;flex-wrap:wrap;justify-content:center}
.btn-primary,.btn-secondary{display:inline-block;padding:0.85rem 2.5rem;text-decoration:none;font-weight:600;font-size:0.95rem;letter-spacing:0.04em;border-radius:4px;transition:all 0.3s ease;position:relative;overflow:hidden}
.btn-primary{background:linear-gradient(135deg,var(--red-primary),var(--red-deep));color:#fff;border:1px solid rgba(196,30,46,0.4)}
.btn-primary:hover{box-shadow:0 0 30px rgba(196,30,46,0.3);transform:translateY(-2px)}
.btn-secondary{border:1px solid var(--gold-primary);color:var(--gold-light);background:transparent}
.btn-secondary:hover{border-color:var(--gold-light);box-shadow:0 0 30px rgba(212,168,67,0.15);transform:translateY(-2px)}

/* ===== SECTIONS ===== */
section{padding:5rem 1.5rem;position:relative}
.alt-bg{background:var(--bg-secondary)}
.section-inner{max-width:900px;margin:0 auto}
.section-label{display:inline-block;font-size:0.7rem;font-weight:700;letter-spacing:0.2em;text-transform:uppercase;color:var(--red-glow);border:1px solid rgba(230,57,70,0.3);padding:0.3rem 1rem;border-radius:2px;margin-bottom:1.5rem}
.section-heading{font-size:clamp(1.5rem,3.5vw,2.2rem);font-weight:800;margin-bottom:1.5rem;line-height:1.3}
.section-heading .accent{background:linear-gradient(135deg,var(--gold-light),var(--gold-primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.section-body{color:var(--text-secondary);font-size:0.95rem;line-height:1.9}
.section-body p+p{margin-top:1rem}
.section-cta{margin-top:2rem;text-align:center}
.btn-detail{display:inline-block;padding:0.7rem 2rem;border:1px solid var(--gold-primary);color:var(--gold-light);text-decoration:none;font-weight:600;font-size:0.9rem;border-radius:4px;transition:all 0.3s}
.btn-detail:hover{background:rgba(212,168,67,0.08);box-shadow:0 0 20px rgba(212,168,67,0.1);transform:translateY(-2px)}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--border-subtle),transparent);max-width:900px;margin:0 auto}

/* ===== VIDEO ===== */
.video-container{margin-top:2rem;border-radius:12px;overflow:hidden;border:1px solid var(--border-subtle)}
.video-container iframe{width:100%;aspect-ratio:16/9;display:block}
.video-placeholder{width:100%;aspect-ratio:16/9;background:var(--bg-card);display:flex;align-items:center;justify-content:center;cursor:pointer}
.video-placeholder-text{text-align:center;color:var(--text-muted)}
.video-placeholder-text span{font-size:3rem;display:block;margin-bottom:0.5rem;opacity:0.4}
.video-placeholder-text p{font-size:0.9rem}

/* ===== CONCEPT FEATURES ===== */
.concept-features{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.5rem;margin-top:2.5rem}
.feature-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:8px;padding:2rem 1.5rem;transition:all 0.35s ease;position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--red-primary),var(--gold-primary));opacity:0;transition:opacity 0.35s}
.feature-card:hover{background:var(--bg-card-hover);border-color:rgba(255,255,255,0.1);transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,0.4)}
.feature-card:hover::before{opacity:1}
.feature-icon{font-size:1.8rem;margin-bottom:1rem}
.feature-card h3{font-size:1rem;font-weight:700;margin-bottom:0.6rem}
.feature-card p{font-size:0.85rem;color:var(--text-secondary);line-height:1.7}

/* ===== PHILOSOPHY SECTION ===== */
.philosophy-section{margin-top:3.5rem}
.philosophy-divider{height:1px;background:linear-gradient(90deg,transparent,var(--border-gold),transparent);margin-bottom:0}
.philosophy-block{padding:3.5rem 2rem;text-align:center}
.philosophy-block.philosophy-alt{background:rgba(255,255,255,0.015);border-top:1px solid var(--border-subtle);border-bottom:1px solid var(--border-subtle)}
.philosophy-heading{margin-bottom:2rem}
.philosophy-en{display:block;font-family:'Roboto','Inter',sans-serif;font-size:0.7rem;font-weight:900;letter-spacing:0.35em;color:var(--gold-dark);text-transform:uppercase;margin-bottom:0.8rem}
.philosophy-accent{width:40px;height:2px;background:linear-gradient(90deg,var(--gold-primary),var(--red-primary));margin:0 auto 0.8rem}
.philosophy-heading h3{font-size:1.4rem;font-weight:800;letter-spacing:0.12em;color:var(--text-primary)}
.philosophy-body{max-width:720px;margin:0 auto}
.philosophy-body p{font-size:0.9rem;color:var(--text-secondary);line-height:2.2;text-align:justify}
.philosophy-body p+p{margin-top:0.8rem}

/* ===== STEPS OVERVIEW ===== */
.steps-overview{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:2rem}
.step-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:8px;padding:1.5rem 1rem;text-align:center;transition:all 0.35s;position:relative;overflow:hidden}
.step-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--red-primary),var(--gold-primary));opacity:0;transition:opacity 0.35s}
.step-card:hover{background:var(--bg-card-hover);transform:translateY(-4px);box-shadow:0 8px 30px rgba(0,0,0,0.3)}
.step-card:hover::before{opacity:1}
.step-num{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--red-primary),var(--red-deep));display:flex;align-items:center;justify-content:center;font-size:1rem;font-weight:800;color:#fff;margin:0 auto 1rem;border:2px solid rgba(196,30,46,0.3)}
.step-card h3{font-size:0.9rem;font-weight:700;margin-bottom:0.4rem}
.step-card p{font-size:0.78rem;color:var(--text-secondary);line-height:1.6}

/* ===== RULES SUMMARY ===== */
.rules-summary{display:flex;flex-direction:column;gap:0.5rem;margin-top:2rem}
.rule-item{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:8px;padding:1rem 1.5rem;display:flex;align-items:center;gap:1rem;transition:all 0.3s}
.rule-item:hover{background:var(--bg-card-hover);border-color:rgba(255,255,255,0.1)}
.rule-icon{font-size:1.3rem;flex-shrink:0;width:36px;text-align:center}
.rule-item div{display:flex;align-items:center;gap:0.6rem;flex-wrap:wrap}
.rule-item strong{font-size:0.9rem;color:var(--text-primary);min-width:120px}
.rule-item span{font-size:0.85rem;color:var(--text-secondary)}

/* ===== TERMS SUMMARY ===== */
.terms-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:2rem}
.terms-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:8px;padding:1.5rem;transition:all 0.35s;position:relative;overflow:hidden}
.terms-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--red-primary),var(--gold-primary));opacity:0;transition:opacity 0.35s}
.terms-card:hover{background:var(--bg-card-hover);transform:translateY(-4px);box-shadow:0 8px 30px rgba(0,0,0,0.3)}
.terms-card:hover::before{opacity:1}
.terms-card h3{font-size:1.2rem;font-weight:800;color:var(--gold-light);margin-bottom:0.3rem}
.terms-card p{font-size:0.9rem;font-weight:600;color:var(--text-primary);margin-bottom:0.5rem}
.terms-detail{font-size:0.78rem;color:var(--text-muted);line-height:1.6}

/* ===== PLAN SECTION ===== */
.plan-section{background:var(--bg-secondary)}
.plan-card{background:var(--bg-card);border:1px solid var(--border-gold);border-radius:12px;padding:3rem 2.5rem;max-width:560px;margin:2.5rem auto 0;position:relative;overflow:hidden}
.plan-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--red-primary),var(--gold-primary),var(--red-primary))}
.plan-card::after{content:'';position:absolute;top:-50%;right:-50%;width:100%;height:100%;background:radial-gradient(circle,rgba(212,168,67,0.03) 0%,transparent 60%);pointer-events:none}
.plan-name{font-size:1.1rem;font-weight:700;margin-bottom:1.5rem;color:var(--gold-light)}
.plan-price{display:flex;align-items:baseline;gap:0.3rem;margin-bottom:0.4rem}
.plan-price .currency{font-size:1rem;font-weight:600;color:var(--text-secondary)}
.plan-price .amount{font-size:3.5rem;font-weight:900;letter-spacing:-0.02em;background:linear-gradient(135deg,var(--gold-light),var(--gold-primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.plan-price .period{font-size:0.9rem;color:var(--text-muted);margin-left:0.3rem}
.plan-tax{font-size:0.8rem;color:var(--text-muted);margin-bottom:2rem}
.plan-benefits-title{font-size:0.75rem;font-weight:700;letter-spacing:0.15em;text-transform:uppercase;color:var(--text-muted);margin-bottom:1rem;padding-bottom:0.5rem;border-bottom:1px solid var(--border-subtle)}
.plan-benefits{list-style:none;display:flex;flex-direction:column;gap:1rem}
.plan-benefits li{display:flex;gap:0.8rem;align-items:flex-start;font-size:0.9rem;color:var(--text-secondary)}
.benefit-icon{flex-shrink:0;width:20px;height:20px;border-radius:50%;background:rgba(212,168,67,0.12);display:flex;align-items:center;justify-content:center;margin-top:2px}
.benefit-icon::after{content:'✦';font-size:0.6rem;color:var(--gold-primary)}
.benefit-label{font-weight:600;color:var(--text-primary)}
.plan-payment{margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--border-subtle);font-size:0.85rem;color:var(--text-muted);display:flex;align-items:center;gap:0.5rem}
.stripe-badge{display:inline-flex;align-items:center;gap:0.3rem;background:rgba(99,91,255,0.1);border:1px solid rgba(99,91,255,0.2);padding:0.2rem 0.6rem;border-radius:3px;font-size:0.75rem;font-weight:600;color:#a29bfe}

/* ===== MINI LEADERBOARD ===== */
.lb-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin-top:2rem}
.lb-column{min-width:0}
.lb-column-header{display:flex;align-items:center;gap:0.5rem;margin-bottom:0.8rem;padding:0 0.2rem}
.lb-column-icon{font-size:1.2rem}
.lb-column-title{font-size:0.85rem;font-weight:700;letter-spacing:0.05em;text-transform:uppercase;color:var(--gold-light)}
.lb-table-wrap{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:8px;overflow:hidden}
.lb-table{width:100%;border-collapse:collapse;table-layout:fixed}
.lb-table thead th{padding:0.5rem 0.6rem;font-size:0.65rem;text-transform:uppercase;letter-spacing:0.1em;color:var(--text-muted);text-align:left;border-bottom:1px solid var(--border-subtle);font-weight:600}
.lb-th-rank{width:10%;text-align:center}
.lb-th-badge{width:14%;text-align:center}
.lb-th-name{width:46%}
th.lb-th-elo{width:30%;text-align:center!important}
.lb-table tbody tr{transition:background 0.2s}
.lb-table tbody tr:hover{background:var(--bg-card-hover)}
.lb-table tbody td{padding:0.45rem 0.6rem;font-size:0.82rem;border-bottom:1px solid rgba(255,255,255,0.03)}
.lb-table tbody tr:last-child td{border-bottom:none}
.lb-td-rank{text-align:center;font-weight:800;color:var(--text-muted)}
.lb-td-badge{text-align:center;overflow:hidden;padding:0.3rem 0}
.lb-td-badge img{width:38px;height:auto;max-width:38px;display:block;margin:0 auto}
.lb-td-name{font-weight:600;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lb-td-elo{text-align:center;font-weight:800;font-family:'Inter',sans-serif;color:var(--red-glow);font-size:0.88rem}
.lb-rank-1 .lb-td-rank{color:var(--gold-light);font-size:1rem}
.lb-rank-2 .lb-td-rank{color:#c0c0c0;font-size:0.95rem}
.lb-rank-3 .lb-td-rank{color:#cd7f32;font-size:0.95rem}
.lb-loading{text-align:center;padding:2rem;color:var(--text-muted);font-size:0.85rem}

/* ===== FOOTER ===== */
footer{border-top:1px solid var(--border-subtle);padding:2.5rem 1.5rem;text-align:center}
.footer-inner{max-width:900px;margin:0 auto}
.footer-links{display:flex;justify-content:center;gap:2rem;flex-wrap:wrap;margin-bottom:1.5rem}
.footer-links a{color:var(--text-muted);text-decoration:none;font-size:0.8rem;transition:color 0.2s}
.footer-links a:hover{color:var(--text-secondary)}
.footer-copy{font-size:0.75rem;color:var(--text-muted)}

/* ===== SCROLL ANIMATIONS ===== */
.reveal{opacity:0;transform:translateY(30px);transition:all 0.8s cubic-bezier(0.16,1,0.3,1)}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ===== NAV CLOSE BUTTON ===== */
.nav-close-li{display:none}

/* ===== RESPONSIVE ===== */
@media(max-width:768px){
    .navbar-toggle{display:flex}
    .navbar-links{position:fixed;top:0;right:-100%;width:280px;height:100vh;background:rgba(10,10,12,0.98);backdrop-filter:blur(20px);flex-direction:column;justify-content:center;align-items:center;gap:2rem;transition:right 0.3s ease;padding:2rem}
    .navbar-links.active{right:0}
    .navbar-links a{font-size:1rem}
    .nav-close-li{display:block;position:absolute;top:1.2rem;right:1.2rem}
    .nav-close-btn{background:none;border:1px solid var(--text-muted);color:var(--text-secondary);font-size:1.5rem;width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;border-radius:6px;transition:all 0.2s}
    .nav-close-btn:hover{color:var(--text-primary);border-color:var(--text-primary);background:rgba(255,255,255,0.05)}
    .steps-overview{grid-template-columns:repeat(2,1fr)}
    .lb-grid{grid-template-columns:1fr}
    .terms-summary{grid-template-columns:1fr}
}
@media(max-width:640px){
    section{padding:3.5rem 1.25rem}
    .plan-card{padding:2rem 1.5rem}
    .plan-price .amount{font-size:2.8rem}
    .concept-features{grid-template-columns:1fr}
    .steps-overview{grid-template-columns:1fr}
    .rule-item strong{min-width:auto}
    .hero-cta{flex-direction:column;align-items:center}
}