/* ===== RESET & BASE ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Noto Sans JP',sans-serif;color:#1a1a1a;line-height:1.8;background:#fff;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}

/* ===== VARIABLES ===== */
:root{
  --orange:#ff5d00;
  --orange-light:#ff8945;
  --orange-pale:#fff4ed;
  --dark:#1a1a1a;
  --gray:#666;
  --gray-light:#999;
  --gray-bg:#f7f7f7;
  --dark-bg:#1c1c2e;
  --white:#fff;
  --radius:12px;
  --radius-lg:20px;
  --radius-btn:50px;
  --shadow:0 4px 20px rgba(0,0,0,0.08);
  --shadow-hover:0 8px 32px rgba(0,0,0,0.12);
  --max-w:1100px;
  --transition:0.3s cubic-bezier(0.4,0,0.2,1);
}

/* ===== UTILITY ===== */
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section--gray{background:var(--gray-bg)}
.section--dark{background:var(--dark-bg);color:var(--white)}
.section--orange{background:linear-gradient(135deg,var(--orange),var(--orange-light))}
.section-label{font-family:'Montserrat',sans-serif;font-weight:700;font-size:14px;letter-spacing:0.15em;text-transform:uppercase;color:var(--orange);display:block;margin-bottom:8px}
.section--dark .section-label{color:var(--orange-light)}
.section-title{font-size:36px;font-weight:900;letter-spacing:0.05em;line-height:1.4;margin-bottom:16px}
.section-subtitle{font-size:16px;color:var(--gray);line-height:1.8;max-width:640px;margin:0 auto 48px}
.text-center{text-align:center}
.text-orange{color:var(--orange)}
.text-white{color:var(--white)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:18px 48px;border-radius:var(--radius-btn);font-size:16px;font-weight:700;border:none;cursor:pointer;transition:var(--transition);letter-spacing:0.05em}
.btn--primary{background:linear-gradient(135deg,var(--orange),var(--orange-light));color:var(--white);box-shadow:0 4px 16px rgba(255,93,0,0.35)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(255,93,0,0.45)}
.btn--outline{background:transparent;color:var(--white);border:2px solid var(--white)}
.btn--outline:hover{background:var(--white);color:var(--orange)}
.btn--lg{padding:22px 56px;font-size:18px}

/* ===== ANIMATIONS ===== */
.fade-up{opacity:0;transform:translateY(30px);transition:opacity 0.6s ease,transform 0.6s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(255,93,0,0.4)}70%{box-shadow:0 0 0 20px rgba(255,93,0,0)}}

/* ===== HEADER ===== */
.header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,0.95);backdrop-filter:blur(12px);transition:var(--transition);border-bottom:1px solid transparent}
.header.scrolled{border-bottom:1px solid #eee;box-shadow:0 2px 12px rgba(0,0,0,0.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;max-width:var(--max-w);margin:0 auto;padding:0 24px;height:72px}
.logo{font-family:'Montserrat',sans-serif;font-weight:800;font-size:20px;color:var(--dark)}
.logo span{color:var(--orange)}
.nav{display:flex;align-items:center;gap:32px}
.nav a{font-size:14px;font-weight:500;color:var(--dark);transition:var(--transition)}
.nav a:hover{color:var(--orange)}
.nav .btn{padding:12px 28px;font-size:14px}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;background:none;border:none;z-index:1001}
.hamburger span{display:block;width:24px;height:2px;background:var(--dark);transition:var(--transition)}
.hamburger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* ===== HERO ===== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;background-color:#1a1a1a}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover}
.hero-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,0.75) 0%,rgba(0,0,0,0.5) 50%,rgba(0,0,0,0.25) 100%)}
.hero-inner{display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;max-width:var(--max-w);margin:0 auto;padding:140px 24px 100px;position:relative;z-index:1;min-height:100vh}
.hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,0.15);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,0.25);padding:8px 20px;border-radius:var(--radius-btn);font-size:13px;font-weight:500;color:var(--white);margin-bottom:24px;width:fit-content}
.hero-badge::before{content:'';width:8px;height:8px;border-radius:50%;background:var(--orange);animation:pulse 2s infinite}
.hero h1{font-size:56px;font-weight:900;line-height:1.3;letter-spacing:0.02em;margin-bottom:20px;color:var(--white);text-shadow:0 2px 12px rgba(0,0,0,0.5)}
.hero h1 .gradient{color:var(--white)}
.hero p.hero-desc{font-size:18px;color:rgba(255,255,255,0.95);line-height:1.8;margin-bottom:36px;max-width:640px;text-shadow:0 1px 6px rgba(0,0,0,0.4)}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap;align-items:center;justify-content:center}
.hero-note{font-size:13px;color:rgba(255,255,255,0.5);margin-top:12px}
.hero-stats-bar{display:flex;gap:32px;margin-top:48px;flex-wrap:wrap;justify-content:center}
.hero-stats-bar .stat-item{text-align:center}
.hero-stats-bar .stat-num{font-family:'Montserrat',sans-serif;font-size:36px;font-weight:800;color:var(--orange)}
.hero-stats-bar .stat-num small{font-size:16px}
.hero-stats-bar .stat-label{font-size:13px;color:rgba(255,255,255,0.7);margin-top:2px}

/* ===== ABOUT ===== */
.about-section{position:relative;overflow:hidden}
.about-bg{position:absolute;inset:0;z-index:0}
.about-bg img{width:100%;height:100%;object-fit:cover;opacity:0.12}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;position:relative;z-index:1}
.about-content p{margin-bottom:20px;color:var(--gray)}
.about-features{display:flex;flex-direction:column;gap:16px;margin-top:32px}
.about-feature{display:flex;gap:16px;align-items:flex-start;padding:20px;background:var(--orange-pale);border-radius:var(--radius);transition:var(--transition)}
.about-feature:hover{transform:translateX(4px)}
.about-feature-icon{width:48px;height:48px;min-width:48px;border-radius:12px;background:linear-gradient(135deg,var(--orange),var(--orange-light));display:flex;align-items:center;justify-content:center;font-size:22px}
.about-feature h4{font-size:15px;font-weight:700;margin-bottom:4px}
.about-feature p{font-size:14px;color:var(--gray);margin:0}
.about-image{border-radius:var(--radius-lg);overflow:hidden;position:relative}
.about-image img{width:100%;height:100%;object-fit:cover;min-height:400px}

/* ===== PROBLEMS ===== */
.problems-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.problem-card{background:var(--white);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);transition:var(--transition);border-left:4px solid transparent;text-align:center}
.problem-card:hover{border-left-color:var(--orange);transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.problem-card-img{width:180px;height:180px;object-fit:contain;margin:0 auto 20px}
.problem-card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.problem-card p{font-size:14px;color:var(--gray);text-align:center}

/* ===== SOLUTION ===== */
.solution-items{display:flex;flex-direction:column;gap:64px}
.solution-item{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.solution-item:nth-child(even){direction:rtl}
.solution-item:nth-child(even) > *{direction:ltr}
.solution-num{font-family:'Montserrat',sans-serif;font-size:120px;font-weight:800;color:var(--orange-pale);line-height:1;margin-bottom:-20px;position:relative;z-index:0}
.solution-item h3{font-size:24px;font-weight:900;margin-bottom:12px;position:relative;z-index:1}
.solution-item p{color:var(--gray);font-size:15px}
.solution-visual{border-radius:var(--radius-lg);overflow:hidden;min-height:280px}
.solution-visual img{width:100%;height:100%;object-fit:cover;min-height:280px}

/* ===== AI TOOLS ===== */
.tools-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;margin-bottom:48px}
.tool-card{background:var(--white);border-radius:var(--radius);padding:28px 20px;text-align:center;box-shadow:var(--shadow);transition:var(--transition);border:2px solid transparent}
.tool-card:hover{border-color:var(--orange);transform:translateY(-4px)}
.tool-card-icon{width:56px;height:56px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center}
.tool-card-icon svg{width:48px;height:48px}
.tool-card h4{font-size:15px;font-weight:700;margin-bottom:4px}
.tool-card p{font-size:13px;color:var(--gray)}
.tools-highlight{text-align:center;padding:32px;background:linear-gradient(135deg,var(--orange),var(--orange-light));border-radius:var(--radius);color:var(--white)}
.tools-highlight p{font-size:20px;font-weight:700;letter-spacing:0.03em}

/* ===== CURRICULUM ===== */
.curriculum-scroll-wrapper{overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:16px;margin:0 -24px;padding-left:24px;padding-right:24px}
.curriculum-scroll-wrapper::-webkit-scrollbar{height:6px}
.curriculum-scroll-wrapper::-webkit-scrollbar-track{background:transparent}
.curriculum-scroll-wrapper::-webkit-scrollbar-thumb{background:var(--orange);border-radius:3px}
.curriculum-cards{display:flex;gap:20px;width:max-content}
.curriculum-card{width:260px;min-width:260px;background:var(--white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);transition:var(--transition);flex-shrink:0}
.curriculum-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.curriculum-card-img{width:100%;height:180px;overflow:hidden;background:var(--orange-pale)}
.curriculum-card-img img{width:100%;height:100%;object-fit:cover}
.curriculum-card-body{padding:20px}
.curriculum-card-day{font-family:'Montserrat',sans-serif;font-size:13px;font-weight:700;color:var(--orange);letter-spacing:0.08em;text-transform:uppercase;margin-bottom:6px}
.curriculum-card h4{font-size:16px;font-weight:900;margin-bottom:8px;line-height:1.4}
.curriculum-card p{font-size:13px;color:var(--gray);line-height:1.6}

/* ===== VOICE (STUDENTS) ===== */
.voice-section{position:relative;overflow:hidden}
.voice-bg{position:absolute;inset:0;z-index:0}
.voice-bg img{width:100%;height:100%;object-fit:cover}
.voice-bg::after{content:'';position:absolute;inset:0;background:rgba(28,28,46,0.88)}
.voice-content{position:relative;z-index:1}
.voice-header{display:flex;justify-content:center;gap:40px;margin-bottom:48px;flex-wrap:wrap}
.voice-stat{text-align:center}
.voice-stat-num{font-family:'Montserrat',sans-serif;font-size:48px;font-weight:800;color:var(--orange)}
.voice-stat-label{font-size:14px;color:rgba(255,255,255,0.7)}
.voice-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}
.voice-card{background:rgba(255,255,255,0.08);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,0.1);border-radius:var(--radius-lg);padding:36px;transition:var(--transition)}
.voice-card:hover{transform:translateY(-4px);background:rgba(255,255,255,0.12)}
.voice-stars{color:#f5a623;font-size:16px;margin-bottom:12px;letter-spacing:2px}
.voice-card blockquote{font-size:15px;line-height:1.8;color:rgba(255,255,255,0.9);margin-bottom:24px;position:relative;padding-left:16px;border-left:3px solid var(--orange)}
.voice-author{display:flex;align-items:center;gap:16px}
.voice-avatar{width:56px;height:56px;border-radius:50%;overflow:hidden;border:2px solid var(--orange);flex-shrink:0}
.voice-avatar img{width:100%;height:100%;object-fit:cover}
.voice-author-info{font-size:15px;font-weight:600;color:var(--white)}
.voice-author-info span{display:block;font-size:13px;color:rgba(255,255,255,0.5);font-weight:400;margin-top:2px}

/* ===== TEACHER ===== */
.teacher-section{position:relative;overflow:hidden}
.teacher-bg{position:absolute;inset:0;z-index:0}
.teacher-bg img{width:100%;height:100%;object-fit:cover}
.teacher-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,244,237,0.92),rgba(255,255,255,0.88))}
.teacher-card{display:grid;grid-template-columns:320px 1fr;gap:48px;align-items:center;position:relative;z-index:1;background:rgba(255,255,255,0.7);backdrop-filter:blur(12px);border-radius:var(--radius-lg);padding:48px;box-shadow:var(--shadow)}
.teacher-photo{border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:3/4}
.teacher-photo img{width:100%;height:100%;object-fit:cover}
.teacher-info h3{font-size:28px;font-weight:900;margin-bottom:4px}
.teacher-info .teacher-role{font-size:14px;color:var(--orange);font-weight:500;margin-bottom:20px}
.teacher-info p{color:var(--gray);font-size:15px;margin-bottom:16px}
.teacher-tags{display:flex;flex-wrap:wrap;gap:8px}
.teacher-tag{background:var(--orange-pale);color:var(--orange);font-size:13px;font-weight:500;padding:6px 14px;border-radius:var(--radius-btn)}

/* ===== COMPARISON ===== */
.comparison-table-wrapper{overflow-x:auto;-webkit-overflow-scrolling:touch}
.comparison-table{width:100%;border-collapse:collapse;min-width:600px}
.comparison-table th,.comparison-table td{padding:16px 20px;text-align:center;font-size:14px;border-bottom:1px solid #eee}
.comparison-table thead th{background:var(--gray-bg);font-weight:700;font-size:13px;color:var(--gray);letter-spacing:0.05em}
.comparison-table thead th:first-child{text-align:left}
.comparison-table tbody td:first-child{text-align:left;font-weight:500}
.comparison-table .highlight-col{background:var(--orange-pale);font-weight:700;color:var(--orange);position:relative}
.comparison-table thead .highlight-col{background:var(--orange);color:var(--white);border-radius:var(--radius) var(--radius) 0 0}
.comparison-check{color:var(--orange);font-size:20px;font-weight:700}
.comparison-x{color:#ccc;font-size:16px}

/* ===== PRESENT ===== */
.present-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.present-card{display:flex;gap:20px;align-items:flex-start;background:var(--white);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:var(--transition);overflow:hidden}
.present-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.present-card-img{width:100px;min-width:100px;height:100px;border-radius:var(--radius);overflow:hidden;flex-shrink:0}
.present-card-img img{width:100%;height:100%;object-fit:cover}
.present-card h4{font-size:16px;font-weight:700;margin-bottom:6px}
.present-card p{font-size:14px;color:var(--gray)}

/* ===== PRICE ===== */
.price-card{max-width:560px;margin:0 auto;background:var(--white);border-radius:var(--radius-lg);padding:48px;box-shadow:var(--shadow);text-align:center;border:2px solid var(--orange);position:relative;overflow:hidden}
.price-card::before{content:'POPULAR';position:absolute;top:20px;right:-30px;background:var(--orange);color:var(--white);font-family:'Montserrat',sans-serif;font-size:11px;font-weight:700;padding:6px 40px;transform:rotate(45deg);letter-spacing:0.1em}
.price-card h3{font-size:20px;font-weight:700;margin-bottom:8px}
.price-card .price-label{font-size:14px;color:var(--gray);margin-bottom:16px}
.price-amount{display:flex;align-items:baseline;justify-content:center;gap:4px;margin-bottom:8px}
.price-yen{font-size:20px;font-weight:700;color:var(--orange)}
.price-num{font-family:'Montserrat',sans-serif;font-size:64px;font-weight:800;color:var(--orange);line-height:1}
.price-tax{font-size:13px;color:var(--gray);margin-bottom:24px}
.price-features{text-align:left;margin-bottom:32px}
.price-feature{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid #f0f0f0;font-size:14px}
.price-feature::before{content:'';width:20px;height:20px;min-width:20px;border-radius:50%;background:var(--orange-pale);display:flex;align-items:center;justify-content:center}
.price-feature .check{color:var(--orange);font-weight:700;margin-left:-26px;font-size:14px}
.price-installment{font-size:14px;color:var(--gray);margin-top:16px}

/* ===== FAQ ===== */
.faq-list{max-width:760px;margin:0 auto}
.faq-item{border-bottom:1px solid rgba(255,255,255,0.1);overflow:hidden}
.section--dark .faq-item:last-child{border-bottom:none}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:24px 0;cursor:pointer;gap:16px;transition:var(--transition)}
.faq-question:hover{color:var(--orange-light)}
.faq-question h3{font-size:16px;font-weight:500;flex:1}
.faq-question .faq-q{font-family:'Montserrat',sans-serif;font-weight:700;color:var(--orange-light);margin-right:12px;font-size:18px}
.faq-toggle{width:32px;height:32px;min-width:32px;border-radius:50%;border:2px solid rgba(255,255,255,0.2);display:flex;align-items:center;justify-content:center;font-size:18px;transition:var(--transition)}
.faq-item.active .faq-toggle{transform:rotate(45deg);border-color:var(--orange-light)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height 0.4s ease}
.faq-answer-inner{padding:0 0 24px 36px;font-size:15px;color:rgba(255,255,255,0.7);line-height:1.8}

/* ===== FINAL CTA ===== */
.final-cta{text-align:center;padding:100px 24px;color:var(--white);position:relative;overflow:hidden}
.final-cta::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 30% 50%,rgba(255,137,69,0.3),transparent 60%)}
.final-cta h2{font-size:40px;font-weight:900;margin-bottom:16px;position:relative;z-index:1}
.final-cta p{font-size:18px;opacity:0.9;margin-bottom:40px;position:relative;z-index:1}
.final-cta .btn{position:relative;z-index:1}

/* ===== FOOTER ===== */
.footer{background:var(--dark);color:rgba(255,255,255,0.6);padding:48px 0 24px}
.footer-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:24px;margin-bottom:32px}
.footer-logo{font-family:'Montserrat',sans-serif;font-weight:800;font-size:18px;color:var(--white)}
.footer-logo span{color:var(--orange)}
.footer-links{display:flex;gap:24px;flex-wrap:wrap}
.footer-links a{font-size:13px;transition:var(--transition)}
.footer-links a:hover{color:var(--white)}
.footer-copy{text-align:center;font-size:12px;padding-top:24px;border-top:1px solid rgba(255,255,255,0.08)}

/* ===== MOBILE NAV OVERLAY ===== */
.mobile-nav{position:fixed;inset:0;background:rgba(255,255,255,0.98);z-index:999;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:32px;opacity:0;pointer-events:none;transition:var(--transition)}
.mobile-nav.active{opacity:1;pointer-events:all}
.mobile-nav a{font-size:18px;font-weight:500;color:var(--dark)}
.mobile-nav a:hover{color:var(--orange)}

/* ===== LEGAL PAGES ===== */
.legal-page{max-width:800px;margin:0 auto;padding:120px 24px 80px}
.legal-page h1{font-size:32px;font-weight:900;margin-bottom:32px;text-align:center}
.legal-page h2{font-size:20px;font-weight:700;margin:32px 0 12px;padding-left:12px;border-left:4px solid var(--orange)}
.legal-page p,.legal-page li{font-size:15px;line-height:1.9;color:var(--gray);margin-bottom:12px}
.legal-page ul{padding-left:20px}
.legal-page li{list-style:disc}
.legal-page table{width:100%;border-collapse:collapse;margin:24px 0}
.legal-page th{background:var(--gray-bg);padding:14px 16px;text-align:left;font-weight:700;width:200px;border-bottom:1px solid #eee;font-size:14px}
.legal-page td{padding:14px 16px;border-bottom:1px solid #eee;font-size:14px;color:var(--gray)}

/* ===== RESPONSIVE ===== */
@media(max-width:968px){
  .nav{display:none}
  .hamburger{display:flex}
  .hero h1{font-size:38px}
  .hero-stats-bar{gap:20px}
  .hero-stats-bar .stat-num{font-size:28px}
  .about-grid{grid-template-columns:1fr}
  .about-image img{min-height:280px}
  .problems-grid{grid-template-columns:1fr}
  .solution-item{grid-template-columns:1fr}
  .solution-item:nth-child(even){direction:ltr}
  .solution-num{font-size:80px}
  .tools-grid{grid-template-columns:repeat(3,1fr)}
  .voice-grid{grid-template-columns:1fr}
  .teacher-card{grid-template-columns:1fr;text-align:center}
  .teacher-photo{max-width:300px;margin:0 auto}
  .teacher-tags{justify-content:center}
  .present-grid{grid-template-columns:1fr}
  .section-title{font-size:28px}
  .section{padding:56px 0}
  .final-cta{padding:64px 24px}
  .final-cta h2{font-size:28px}
  .voice-stat-num{font-size:36px}
  .price-num{font-size:48px}
  .curriculum-card{width:240px;min-width:240px}
  .legal-page{padding-top:96px}
  .legal-page th{width:140px}
}
@media(max-width:480px){
  .hero h1{font-size:28px}
  .hero p.hero-desc{font-size:15px}
  .btn--lg{padding:18px 36px;font-size:16px}
  .tools-grid{grid-template-columns:1fr 1fr}
  .hero-stats-bar{gap:16px}
  .hero-stats-bar .stat-num{font-size:24px}
  .voice-header{gap:24px}
  .comparison-table{min-width:540px}
  .present-card{flex-direction:column;align-items:center;text-align:center}
  .present-card-img{width:140px;height:auto}
  .curriculum-card{width:220px;min-width:220px}
  .legal-page h1{font-size:24px}
  .legal-page table{display:block;overflow-x:auto}
}