/* ===== 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','Outfit',sans-serif;color:#1a2744;background:#f8fafb;line-height:1.8;overflow-x:hidden}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}

/* ===== CSS VARIABLES ===== */
:root{
  --navy:#1a2744;
  --navy-light:#2a3f6a;
  --blue:#3b7ddd;
  --blue-light:#e8f1fc;
  --blue-pale:#f0f6ff;
  --coral:#e8593c;
  --coral-light:#fef0ec;
  --coral-pale:#fff7f5;
  --green:#2a9d6e;
  --green-light:#e6f7ef;
  --amber:#e6a023;
  --amber-light:#fef5e0;
  --purple:#6c5ce7;
  --purple-light:#f0edfe;
  --white:#ffffff;
  --gray-50:#f8fafb;
  --gray-100:#eef1f5;
  --gray-200:#dde2ea;
  --gray-400:#9aa5b8;
  --gray-600:#5a6577;
  --radius-sm:8px;
  --radius-md:16px;
  --radius-lg:24px;
  --radius-xl:32px;
  --radius-pill:100px;
  --shadow-sm:0 2px 8px rgba(26,39,68,.06);
  --shadow-md:0 8px 32px rgba(26,39,68,.08);
  --shadow-lg:0 16px 48px rgba(26,39,68,.12);
  --max-w:1120px;
}

/* ===== UTILITY ===== */
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}
.section-pad{padding:100px 0}
.section-pad-sm{padding:72px 0}
.text-center{text-align:center}

/* ===== TYPOGRAPHY ===== */
.heading-xl{font-family:'Outfit','Noto Sans JP',sans-serif;font-size:clamp(2rem,5vw,3.2rem);font-weight:700;line-height:1.25;letter-spacing:-.02em}
.heading-lg{font-family:'Outfit','Noto Sans JP',sans-serif;font-size:clamp(1.5rem,3.5vw,2.2rem);font-weight:600;line-height:1.3;letter-spacing:-.01em}
.heading-md{font-family:'Outfit','Noto Sans JP',sans-serif;font-size:clamp(1.1rem,2.5vw,1.5rem);font-weight:600;line-height:1.4}
.heading-sm{font-size:1rem;font-weight:700;line-height:1.5}
.body-lg{font-size:1.05rem;line-height:1.9;color:var(--gray-600)}
.body-md{font-size:.95rem;line-height:1.8;color:var(--gray-600)}
.label{font-family:'Outfit',sans-serif;font-size:.75rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase}

/* ===== SECTION LABEL ===== */
.section-label{display:inline-flex;align-items:center;gap:8px;padding:6px 18px;border-radius:var(--radius-pill);font-size:.8rem;font-weight:500;margin-bottom:20px}
.section-label .dot{width:8px;height:8px;border-radius:50%}
.sl-blue{background:var(--blue-light);color:var(--blue)}
.sl-blue .dot{background:var(--blue)}
.sl-coral{background:var(--coral-light);color:var(--coral)}
.sl-coral .dot{background:var(--coral)}
.sl-green{background:var(--green-light);color:var(--green)}
.sl-green .dot{background:var(--green)}
.sl-purple{background:var(--purple-light);color:var(--purple)}
.sl-purple .dot{background:var(--purple)}
.sl-amber{background:var(--amber-light);color:var(--amber)}
.sl-amber .dot{background:var(--amber)}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:var(--radius-pill);font-size:.95rem;font-weight:600;border:none;cursor:pointer;transition:all .3s ease}
.btn-primary{background:var(--coral);color:#fff;box-shadow:0 4px 16px rgba(232,89,60,.3)}
.btn-primary:hover{background:#d14e33;transform:translateY(-2px);box-shadow:0 8px 24px rgba(232,89,60,.35)}
.btn-secondary{background:var(--white);color:var(--navy);border:1.5px solid var(--gray-200)}
.btn-secondary:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-2px)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy-light);transform:translateY(-2px)}
.btn svg{width:18px;height:18px}

/* ===== HEADER / NAV ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;padding:12px 0;transition:all .4s ease}
.site-header.scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(16px);box-shadow:var(--shadow-sm)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;max-width:var(--max-w);margin:0 auto;padding:0 24px}
.logo{display:flex;align-items:center;gap:10px;font-family:'Outfit',sans-serif;font-weight:700;font-size:1.3rem;color:var(--navy)}
.logo-mark{width:36px;height:36px;border-radius:10px;object-fit:contain}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-size:.85rem;font-weight:500;color:var(--gray-600);transition:color .2s}
.nav-links a:hover{color:var(--blue)}
.nav-cta{padding:10px 24px;font-size:.85rem}
.mobile-menu-btn{display:none;background:none;border:none;cursor:pointer;padding:8px}
.mobile-menu-btn span{display:block;width:22px;height:2px;background:var(--navy);margin:5px 0;border-radius:2px;transition:.3s}

/* ===== HERO ===== */
.hero{padding:160px 0 100px;background:linear-gradient(160deg,#f0f6ff 0%,#fff7f5 50%,#f8fafb 100%);position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-200px;right:-200px;width:600px;height:600px;background:radial-gradient(circle,rgba(59,125,221,.08) 0%,transparent 70%);border-radius:50%}
.hero::after{content:'';position:absolute;bottom:-100px;left:-150px;width:500px;height:500px;background:radial-gradient(circle,rgba(232,89,60,.06) 0%,transparent 70%);border-radius:50%}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;position:relative;z-index:1}
.hero-content{animation:fadeUp .8s ease-out}
.hero-eyebrow{display:inline-flex;align-items:center;gap:6px;background:var(--blue-light);color:var(--blue);padding:6px 16px;border-radius:var(--radius-pill);font-size:.8rem;font-weight:500;margin-bottom:24px}
.hero-title{margin-bottom:20px;color:var(--navy)}
.hero-title .accent{color:var(--coral)}
.hero-sub{font-size:1.1rem;color:var(--gray-600);line-height:1.9;margin-bottom:36px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.hero-visual{position:relative;animation:fadeUp .8s ease-out .2s both}
.hero-card{background:var(--white);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);padding:32px;position:relative;overflow:hidden}
.hero-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--blue),var(--coral),var(--green))}
.hero-card-row{display:flex;align-items:center;gap:16px;margin-bottom:20px}
.badge-tier{padding:6px 14px;border-radius:var(--radius-pill);font-size:.75rem;font-weight:600}
.badge-bronze{background:#fef5e0;color:#b07d18}
.badge-silver{background:var(--gray-100);color:var(--gray-600)}
.badge-gold{background:var(--green-light);color:var(--green)}
.hero-card-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:16px}
.stat-box{background:var(--gray-50);border-radius:var(--radius-md);padding:16px;text-align:center}
.stat-num{font-family:'Outfit',sans-serif;font-size:1.6rem;font-weight:700;color:var(--navy)}
.stat-label{font-size:.72rem;color:var(--gray-400);margin-top:4px}
.float-badge{position:absolute;padding:10px 18px;border-radius:var(--radius-md);background:var(--white);box-shadow:var(--shadow-md);font-size:.8rem;font-weight:500;animation:float 3s ease-in-out infinite}
.float-badge.fb-1{top:-10px;right:-10px;color:var(--blue)}
.float-badge.fb-2{bottom:20px;left:-20px;color:var(--green)}

/* ===== PROBLEM ===== */
.problem{background:var(--white)}
.problem-catchphrase{font-family:'Outfit','Noto Sans JP',sans-serif;font-size:clamp(1.1rem, 2.5vw, 1.4rem);font-weight:700;color:var(--navy);margin-bottom:40px;letter-spacing:0.05em;line-height:1.6;position:relative;display:inline-block;padding-bottom:12px}
.problem-catchphrase::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:60px;height:3px;background:linear-gradient(90deg,var(--blue),var(--coral));border-radius:2px}
.problem-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px}
.problem-card{border-radius:var(--radius-lg);padding:36px 28px;text-align:center;border:1px solid transparent;transition:all .4s ease}
.problem-card:nth-child(1){background:var(--blue-pale);border-color:#d4e4f7}
.problem-card:nth-child(2){background:var(--coral-pale);border-color:#f5d5cc}
.problem-card:nth-child(3){background:var(--purple-light);border-color:#d9d4f7}
.problem-icon{width:64px;height:64px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:1.8rem}
.problem-card:nth-child(1) .problem-icon{background:var(--blue-light);color:var(--blue)}
.problem-card:nth-child(2) .problem-icon{background:var(--coral-light);color:var(--coral)}
.problem-card:nth-child(3) .problem-icon{background:var(--purple-light);color:var(--purple)}
.problem-card h3{margin-bottom:10px;color:var(--navy)}
.problem-card p{font-size:.9rem;color:var(--gray-600);line-height:1.7}
.problem-bridge{margin-top:48px;padding:28px 36px;background:var(--navy);color:#fff;border-radius:var(--radius-lg);text-align:center;font-size:1.05rem;font-weight:500}
.problem-bridge span{color:var(--coral);font-weight:700}

/* ===== ABOUT ===== */
.about{background:var(--gray-50)}
.about-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:60px;align-items:center;margin-top:48px}
.about-desc{font-size:1rem;color:var(--gray-600);line-height:1.9;margin-bottom:28px}
.pillar-list{display:flex;flex-direction:column;gap:16px}
.pillar-item{display:flex;align-items:flex-start;gap:16px;background:var(--white);border-radius:var(--radius-md);padding:20px;box-shadow:var(--shadow-sm);transition:transform .3s}
.pillar-item:hover{transform:translateX(4px)}
.pillar-num{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-family:'Outfit',sans-serif;font-size:.85rem;font-weight:700;flex-shrink:0}
.pillar-item:nth-child(1) .pillar-num{background:var(--blue-light);color:var(--blue)}
.pillar-item:nth-child(2) .pillar-num{background:var(--green-light);color:var(--green)}
.pillar-item:nth-child(3) .pillar-num{background:var(--amber-light);color:var(--amber)}
.pillar-text h4{font-size:.95rem;font-weight:700;color:var(--navy);margin-bottom:4px}
.pillar-text p{font-size:.85rem;color:var(--gray-600)}
.about-visual{background:var(--white);border-radius:var(--radius-xl);padding:36px;box-shadow:var(--shadow-md);position:relative}
.about-diagram{display:flex;flex-direction:column;gap:16px;align-items:center}
.diagram-row{display:flex;align-items:center;gap:12px;width:100%}
.diagram-box{flex:1;padding:14px;border-radius:var(--radius-md);text-align:center;font-size:.85rem;font-weight:600}
.db-research{background:var(--blue-light);color:var(--blue)}
.db-practice{background:var(--coral-light);color:var(--coral)}
.diagram-plus{font-family:'Outfit',sans-serif;font-size:1.4rem;font-weight:700;color:var(--gray-400)}
.diagram-arrow{font-size:1.2rem;color:var(--gray-400)}
.diagram-result{background:var(--navy);color:#fff;padding:18px;border-radius:var(--radius-md);text-align:center;width:100%;font-weight:600;font-size:.95rem}

/* ===== BENEFIT (三方よし) ===== */
.benefit{background:var(--white)}
.benefit-tabs{display:flex;justify-content:center;gap:8px;margin:40px 0 48px;flex-wrap:wrap}
.tab-btn{padding:12px 28px;border-radius:var(--radius-pill);border:1.5px solid var(--gray-200);background:var(--white);cursor:pointer;font-size:.9rem;font-weight:600;color:var(--gray-600);transition:all .3s}
.tab-btn:hover{border-color:var(--blue)}
.tab-btn.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.benefit-panel{display:none;animation:fadeUp .5s ease-out}
.benefit-panel.active{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.benefit-item{display:flex;gap:16px;background:var(--gray-50);border-radius:var(--radius-md);padding:24px;transition:all .3s}
.benefit-item:hover{background:var(--white);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.benefit-num{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-family:'Outfit',sans-serif;font-size:.9rem;font-weight:700;flex-shrink:0}
.tab-student .benefit-num{background:var(--green-light);color:var(--green)}
.tab-univ .benefit-num{background:var(--blue-light);color:var(--blue)}
.tab-corp .benefit-num{background:var(--coral-light);color:var(--coral)}
.benefit-info h4{font-size:.95rem;font-weight:700;color:var(--navy);margin-bottom:6px}
.benefit-info p{font-size:.85rem;color:var(--gray-600);line-height:1.7}

/* ===== CERTIFICATION ===== */
.certification{background:linear-gradient(160deg,var(--blue-pale) 0%,var(--gray-50) 100%)}
.cert-timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:48px;position:relative}
.cert-timeline::before{content:'';position:absolute;top:60px;left:16.67%;right:16.67%;height:3px;background:var(--gray-200);border-radius:2px}
.cert-card{text-align:center;position:relative;padding:0 16px}
.cert-badge-wrap{width:100px;height:100px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 24px;position:relative;z-index:1}
.cert-badge-img{width:100px;height:100px;object-fit:contain;border-radius:50%;drop-shadow:0 4px 12px rgba(0,0,0,.1)}
.cert-title{font-size:1rem;font-weight:700;color:var(--navy);margin-bottom:6px}
.cert-subtitle{font-size:.85rem;color:var(--gray-600);margin-bottom:16px}
.cert-topics{list-style:none;text-align:left;padding:0}
.cert-topics li{font-size:.8rem;color:var(--gray-600);padding:6px 0;border-bottom:1px solid var(--gray-100);display:flex;align-items:center;gap:8px}
.cert-topics li::before{content:'';width:6px;height:6px;border-radius:50%;flex-shrink:0}
.cert-card:nth-child(1) .cert-topics li::before{background:var(--amber)}
.cert-card:nth-child(2) .cert-topics li::before{background:var(--gray-400)}
.cert-card:nth-child(3) .cert-topics li::before{background:var(--green)}

/* ===== SYSTEM ===== */
.system{background:var(--navy);color:#fff}
.system .heading-lg{color:#fff}
.system .body-lg{color:rgba(255,255,255,.7)}
.system-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px}
.system-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);padding:32px;transition:all .4s}
.system-card:hover{background:rgba(255,255,255,.1);transform:translateY(-4px)}
.system-icon{width:52px;height:52px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;margin-bottom:20px;font-size:1.5rem}
.system-card:nth-child(1) .system-icon{background:rgba(59,125,221,.2);color:#7aacef}
.system-card:nth-child(2) .system-icon{background:rgba(232,89,60,.2);color:#f0957e}
.system-card:nth-child(3) .system-icon{background:rgba(42,157,110,.2);color:#6dd4a5}
.system-card h3{font-size:1.05rem;font-weight:700;margin-bottom:8px}
.system-card p{font-size:.85rem;color:rgba(255,255,255,.6);line-height:1.7}
.system-tags{display:flex;gap:8px;margin-top:16px;flex-wrap:wrap}
.sys-tag{padding:4px 12px;border-radius:var(--radius-pill);font-size:.72rem;background:rgba(255,255,255,.08);color:rgba(255,255,255,.6);border:1px solid rgba(255,255,255,.1)}

/* ===== FLOW ===== */
.flow{background:var(--gray-50)}
.flow-steps{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:48px;position:relative}
.flow-step{text-align:center;position:relative}
.flow-num{width:52px;height:52px;border-radius:50%;background:var(--white);border:2px solid var(--blue);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-family:'Outfit',sans-serif;font-size:1.1rem;font-weight:700;color:var(--blue);position:relative;z-index:1;transition:all .3s}
.flow-step:hover .flow-num{background:var(--blue);color:#fff;transform:scale(1.1)}
.flow-step-title{font-size:.9rem;font-weight:700;color:var(--navy);margin-bottom:6px}
.flow-step-desc{font-size:.78rem;color:var(--gray-400);line-height:1.6}
.flow-connector{position:absolute;top:26px;left:calc(50% + 26px);width:calc(100% - 52px);height:2px;background:var(--gray-200)}
.flow-step:last-child .flow-connector{display:none}
.flow-timeline{display:flex;justify-content:space-between;margin-top:36px;padding:16px 24px;background:var(--white);border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}
.flow-time{text-align:center}
.flow-time span{display:block;font-size:.72rem;color:var(--gray-400)}
.flow-time strong{font-family:'Outfit',sans-serif;font-size:.85rem;font-weight:600;color:var(--navy)}

/* ===== CTA ===== */
.cta-section{background:linear-gradient(160deg,var(--coral-pale) 0%,var(--blue-pale) 100%);position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;top:-100px;right:-100px;width:400px;height:400px;background:radial-gradient(circle,rgba(232,89,60,.08),transparent 70%);border-radius:50%}
.cta-inner{max-width:640px;margin:0 auto;position:relative;z-index:1}
.cta-form{background:var(--white);border-radius:var(--radius-xl);padding:40px;box-shadow:var(--shadow-lg);margin-top:36px}
.form-group{margin-bottom:20px}
.form-label{display:block;font-size:.85rem;font-weight:600;color:var(--navy);margin-bottom:6px}
.form-label .req{color:var(--coral);font-size:.75rem;margin-left:4px}
.form-input,.form-select,.form-textarea{width:100%;padding:12px 16px;border:1.5px solid var(--gray-200);border-radius:var(--radius-sm);font-size:.9rem;font-family:inherit;color:var(--navy);background:var(--white);transition:border-color .3s}
.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(59,125,221,.1)}
.form-textarea{resize:vertical;min-height:100px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-submit{width:100%;margin-top:8px}
.form-note{font-size:.75rem;color:var(--gray-400);margin-top:12px;text-align:center}

/* ===== FOOTER ===== */
.site-footer{background:var(--navy);color:#fff;padding:48px 0 32px}
.footer-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:24px}
.footer-logo{font-family:'Outfit',sans-serif;font-size:1.1rem;font-weight:700;display:flex;align-items:center;gap:10px}
.footer-logo .logo-mark{width:28px;height:28px;border-radius:8px}
.footer-links{display:flex;gap:24px}
.footer-links a{font-size:.8rem;color:rgba(255,255,255,.5);transition:color .2s}
.footer-links a:hover{color:#fff}
.footer-copy{text-align:center;margin-top:32px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);font-size:.75rem;color:rgba(255,255,255,.4)}

/* ===== ANIMATIONS ===== */
@keyframes fadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.reveal{opacity:0;transform:translateY(40px);transition:all .7s cubic-bezier(.16,1,.3,1)}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-delay-1{transition-delay:.15s}
.reveal-delay-2{transition-delay:.3s}
.reveal-delay-3{transition-delay:.45s}

/* ===== RESPONSIVE ===== */
@media(max-width:900px){
  .hero-grid,.about-grid{grid-template-columns:1fr;gap:40px}
  .problem-grid,.system-grid{grid-template-columns:1fr}
  .benefit-panel.active{grid-template-columns:1fr}
  .cert-timeline{grid-template-columns:1fr;gap:40px}
  .cert-timeline::before{display:none}
  .flow-steps{grid-template-columns:1fr;gap:24px}
  .flow-connector{display:none!important}
  .flow-timeline{flex-direction:column;gap:12px}
  .form-row{grid-template-columns:1fr}
  .nav-links{display:none}
  .mobile-menu-btn{display:block}
}
@media(max-width:600px){
  .section-pad{padding:64px 0}
  .hero{padding:120px 0 64px}
  .hero-btns{flex-direction:column}
  .btn{width:100%;justify-content:center}
  .benefit-tabs{gap:6px}
  .tab-btn{padding:10px 16px;font-size:.8rem}
  .mobile-only{display:block}
}
@media(min-width:601px){
  .mobile-only{display:none}
}