/* ===== 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:#333;line-height:1.8;overflow-x:hidden;background:#fff}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%;display:block}

/* ===== Utility ===== */
.container{max-width:1100px;margin:0 auto;padding:0 24px}
.section-title{font-size:2rem;font-weight:700;text-align:center;margin-bottom:12px}
.section-sub{text-align:center;color:#666;margin-bottom:56px;font-size:1.05rem}

/* ===== Buttons ===== */
.btn{display:inline-block;padding:12px 28px;border-radius:8px;font-size:.95rem;font-weight:600;transition:all .25s;cursor:pointer;text-align:center;border:2px solid transparent}
.btn-primary{background:#10B981;color:#fff;border-color:#10B981}
.btn-primary:hover{background:#0EA371;border-color:#0EA371}
.btn-outline{border-color:#10B981;color:#10B981;background:transparent}
.btn-outline:hover{background:#10B981;color:#fff}
.btn-white{background:#fff;color:#10B981;border-color:#fff}
.btn-white:hover{background:#f0fff7;border-color:#f0fff7}
.btn-lg{padding:16px 36px;font-size:1.05rem}
.btn-block{display:block;width:100%}

/* ===== Fade-in ===== */
.fade-in{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* ===== Header ===== */
.header{position:fixed;top:0;left:0;width:100%;z-index:100;transition:background .3s,box-shadow .3s;background:transparent}
.header.scrolled{background:#fff;box-shadow:0 2px 12px rgba(0,0,0,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;max-width:1100px;margin:0 auto;padding:16px 24px}
.header-menu{display:contents}
.logo{display:flex;align-items:center;gap:8px;font-size:1.1rem;font-weight:700;color:#333}
.nav{display:flex;gap:32px}
.nav-link{font-size:.95rem;color:#555;transition:color .2s}
.nav-link:hover{color:#10B981}
.header-cta{padding:10px 24px;font-size:.9rem}
.mobile-menu-btn{display:none;background:none;border:none;cursor:pointer;flex-direction:column;gap:5px;padding:4px}
.mobile-menu-btn span{display:block;width:22px;height:2px;background:#333;border-radius:2px;transition:all .3s}

/* ===== Hero ===== */
.hero{padding:140px 0 80px;background:linear-gradient(180deg,#fff 0%,#E8FBF4 100%)}
.hero-inner{display:flex;align-items:center;gap:60px}
.hero-text{flex:1;min-width:0}
.hero-title{font-size:2.6rem;font-weight:700;line-height:1.4;margin-bottom:20px;color:#1a1a1a}
.hero-sub{font-size:1.1rem;color:#555;margin-bottom:32px;line-height:1.9}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-visual{flex:1;min-width:0}

/* Mock App */
.mock-app{background:#fff;border-radius:12px;box-shadow:0 8px 40px rgba(0,0,0,.12);overflow:hidden}
.mock-toolbar{display:flex;align-items:center;gap:6px;padding:10px 14px;background:#f8f9fa;border-bottom:1px solid #e9ecef}
.mock-toolbar.small{padding:8px 12px}
.mock-dot{width:10px;height:10px;border-radius:50%}
.mock-dot.red{background:#ff5f57}
.mock-dot.yellow{background:#febc2e}
.mock-dot.green{background:#28c840}
.mock-title{margin-left:12px;font-size:.75rem;color:#888}
.mock-body{padding:18px}

/* Mock: プロジェクト写真（ヒーロー） */
.mock-project-header{display:flex;justify-content:space-between;align-items:flex-end;padding-bottom:12px;border-bottom:2px solid #10B981;margin-bottom:14px}
.mock-project-title{font-size:.95rem;font-weight:700;color:#333}
.mock-project-client{font-size:.7rem;color:#888}
.mock-phase{margin-bottom:12px}
.mock-phase-label{display:inline-block;font-size:.7rem;font-weight:700;border-radius:999px;padding:2px 12px;margin-bottom:8px}
.mock-phase-label.before{background:#e0f2fe;color:#0369a1}
.mock-phase-label.after{background:#D1FAE5;color:#0e9c6e}
.mock-thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.mock-thumb{aspect-ratio:4/3;border-radius:8px;display:grid;place-items:center;font-size:18px;border:1px solid #e9ecef}
.mock-thumb.b{background:repeating-linear-gradient(45deg,#eef0f4,#eef0f4 9px,#f7f8fb 9px,#f7f8fb 18px)}
.mock-thumb.a{background:linear-gradient(160deg,#eafaf0,#d9f0df)}
.mock-share-bar{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:14px;padding:10px 12px;background:#f8fafc;border-radius:8px}
.mock-expiry{font-size:.7rem;color:#92600a;background:#fef3c7;border:1px dashed #fde68a;border-radius:999px;padding:2px 10px;white-space:nowrap}
.mock-send-btn{font-size:.75rem;font-weight:700;color:#fff;background:#10B981;border-radius:6px;padding:6px 14px;white-space:nowrap}

/* ===== Features ===== */
.features{padding:100px 0}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{background:#fff;border:1px solid #eef1f6;border-radius:12px;padding:32px 28px;transition:box-shadow .3s,transform .3s}
.feature-card:hover{box-shadow:0 4px 24px rgba(0,0,0,.08);transform:translateY(-4px)}
.feature-icon{width:56px;height:56px;background:#E8FBF4;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.feature-card h3{font-size:1.1rem;margin-bottom:10px;font-weight:600}
.feature-card p{font-size:.9rem;color:#666;line-height:1.7}

/* ===== Highlights ===== */
.highlights{padding:60px 0 100px;background:#f8fafc}
.highlight-row{display:flex;align-items:center;gap:60px;margin-bottom:80px}
.highlight-row:last-child{margin-bottom:0}
.highlight-row.reverse{flex-direction:row-reverse}
.highlight-visual{flex:1;min-width:0}
.highlight-text{flex:1;min-width:0}
.highlight-text h3{font-size:1.5rem;font-weight:700;margin-bottom:16px}
.highlight-text p{color:#555;margin-bottom:20px;line-height:1.8}
.highlight-list{display:flex;flex-direction:column;gap:10px}
.highlight-list li{position:relative;padding-left:24px;color:#555;font-size:.95rem}
.highlight-list li::before{content:'';position:absolute;left:0;top:8px;width:14px;height:14px;border-radius:50%;background:#10B981;opacity:.8}

/* Mock Screens (Highlights) */
.mock-screen{background:#fff;border-radius:12px;box-shadow:0 4px 24px rgba(0,0,0,.1);overflow:hidden}

/* Mock: アップロード */
.mock-upload{padding:16px}
.mock-drop{border:2px dashed #cbe9db;border-radius:10px;padding:14px;text-align:center;font-size:.7rem;color:#888;background:#fbfdfc;margin-bottom:12px}
.mock-drop strong{color:#10B981}

/* Mock: 共有メール */
.mock-mail{padding:16px;display:flex;flex-direction:column;gap:8px}
.mock-mail-row{display:flex;gap:8px;align-items:center;font-size:.7rem;color:#475569;background:#f8fafc;border-radius:6px;padding:8px 10px}
.mock-mail-row .lbl{color:#94a3b8;flex:none;width:44px}
.mock-mail-btn{margin-top:6px;align-self:flex-start;font-size:.75rem;font-weight:700;color:#fff;background:#10B981;border-radius:6px;padding:7px 16px}

/* Mock: 共有リンク一覧 */
.mock-shares{padding:16px;display:flex;flex-direction:column;gap:10px}
.mock-share-item{background:#f8fafc;border-radius:8px;padding:10px 12px;font-size:.7rem;color:#475569}
.mock-share-item .row1{display:flex;align-items:center;gap:8px;margin-bottom:4px}
.mock-badge{display:inline-block;border-radius:999px;padding:1px 10px;font-weight:700;font-size:.65rem}
.mock-badge.ok{background:#D1FAE5;color:#0e9c6e}
.mock-badge.exp{background:#fef3c7;color:#b45309}
.mock-badge.stop{background:#ffe4e6;color:#e11d48}
.mock-share-item .url{color:#94a3b8;word-break:break-all;font-size:.6rem}

/* ===== Pricing ===== */
.pricing{padding:100px 0;background:#fff}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;align-items:start}
.pricing-card{background:#fff;border:1px solid #eef1f6;border-radius:12px;padding:36px 28px;text-align:center;transition:box-shadow .3s}
.pricing-card:hover{box-shadow:0 4px 24px rgba(0,0,0,.08)}
.pricing-card.recommended{border:2px solid #10B981;position:relative;box-shadow:0 4px 24px rgba(16,185,129,.15)}
.recommend-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:#10B981;color:#fff;font-size:.75rem;font-weight:600;padding:4px 16px;border-radius:20px}
.plan-name{font-size:1.2rem;font-weight:600;margin-bottom:12px;color:#333}
.plan-price{margin-bottom:8px}
.price-amount{font-size:2.2rem;font-weight:700;color:#333}
.price-period{font-size:.9rem;color:#888}
.plan-desc{font-size:.85rem;color:#888;margin-bottom:24px}
.plan-features{margin-bottom:28px;text-align:left}
.plan-features li{padding:8px 0;border-bottom:1px solid #f0f0f0;font-size:.9rem;color:#555;position:relative;padding-left:24px}
.plan-features li::before{content:'✓';position:absolute;left:0;color:#10B981;font-weight:700}

/* ===== FAQ ===== */
.faq{padding:100px 0;background:#f8fafc}
.faq-list{max-width:720px;margin:0 auto}
.faq-item{border-bottom:1px solid #e2e8f0}
.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;padding:20px 0;background:none;border:none;cursor:pointer;font-size:1rem;font-weight:500;color:#333;text-align:left;font-family:inherit;line-height:1.6}
.faq-arrow{transition:transform .3s;flex-shrink:0;margin-left:16px;color:#999}
.faq-item.open .faq-arrow{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-answer p{padding:0 0 20px;color:#666;font-size:.95rem;line-height:1.8}

/* ===== CTA ===== */
.cta-section{padding:80px 0;background:linear-gradient(135deg,#10B981 0%,#4A90D9 100%)}
.cta-inner{text-align:center;color:#fff}
.cta-inner h2{font-size:2rem;font-weight:700;margin-bottom:16px}
.cta-inner p{font-size:1.05rem;margin-bottom:32px;opacity:.9}

/* ===== Footer ===== */
.footer{padding:40px 0;background:#1a1a2e;color:#aaa}
.footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.footer-logo{display:flex;align-items:center;gap:8px;font-size:.95rem;font-weight:600;color:#ccc}
.footer-links{display:flex;gap:24px}
.footer-links a{font-size:.85rem;color:#aaa;transition:color .2s}
.footer-links a:hover{color:#fff}
.footer-copy{font-size:.8rem;color:#666}

/* ===== Responsive ===== */
@media(max-width:768px){
  .header-menu{display:none}
  .mobile-menu-btn{display:flex}
  .header.menu-open{background:#fff;box-shadow:0 2px 12px rgba(0,0,0,.08)}
  .header.menu-open .header-menu{display:flex;flex-direction:column;align-items:stretch;gap:12px;position:absolute;top:100%;left:0;width:100%;background:#fff;padding:16px 24px 20px;box-shadow:0 8px 20px rgba(0,0,0,.10)}
  .header.menu-open .nav{display:flex;flex-direction:column;gap:0}
  .header.menu-open .nav-link{padding:13px 2px;border-bottom:1px solid #f0f4f2}
  .header.menu-open .header-cta{display:block;text-align:center;margin-top:6px}
  .mobile-menu-btn.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
  .mobile-menu-btn.open span:nth-child(2){opacity:0}
  .mobile-menu-btn.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
  .hero-inner{flex-direction:column;gap:40px;text-align:center}
  .hero-title{font-size:1.8rem}
  .hero-actions{justify-content:center}
  .features-grid{grid-template-columns:1fr}
  .highlight-row,.highlight-row.reverse{flex-direction:column;gap:32px}
  .pricing-grid{grid-template-columns:1fr;max-width:400px;margin:0 auto}
  .section-title{font-size:1.6rem}
  .footer-inner{flex-direction:column;text-align:center}
}