:root{
  --pink:#f58ea8;           /* 主色（見出しやボタン） */
  --pink-strong:#ef6d8e;    /* 主色の強調 */
  --pink-light:#ffd7e1;     /* タブやBadgeの背景 */
  --cream:#fff7f2;          /* ページの地色 */
  --ink:#523f44;            /* 文字色（落ち着いた茶） */
  --muted:#8b757b;          /* 補助テキスト */
  --card:#ffffff;           /* カード背景 */
  --shadow:0 10px 24px rgba(245,142,168,.18);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN",Meiryo,sans-serif;color:var(--ink);background:var(--cream);}

.container{width:min(1100px,92%);margin-inline:auto}
.section-title{font-size:1.6rem;margin:2.5rem 0 1rem;font-weight:700;color:var(--ink)}

/* Header */
.site-header{background:linear-gradient(180deg,var(--pink) 0%,#ffa8ba 100%);color:#fff;position:sticky;top:0;z-index:10}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{color:#fff;text-decoration:none;font-size:1.6rem;font-weight:800;letter-spacing:.5px}
.brand-ja{opacity:.95}
.brand-en{opacity:.9;margin-left:.25rem}
.nav a{color:#fff;text-decoration:none;margin-left:18px;font-weight:600;opacity:.95}
.nav a:hover{opacity:1}

/* Hero */
.hero{padding:40px 0 24px;background:linear-gradient(180deg,#ffe9ef 0%,var(--cream) 60%)}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center}
.hero-title{font-size:2.1rem;margin:0 0 .5rem}
.hero-sub{margin:.25rem 0 1rem;color:var(--muted)}
.cta .btn{display:inline-flex;align-items:center;gap:.6rem;padding:14px 18px;border-radius:14px;text-decoration:none;font-weight:800}
.btn-primary{background:var(--pink);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{background:var(--pink-strong)}
.btn-badge{background:var(--pink-light);color:#a33c57;padding:4px 8px;border-radius:999px;font-size:.8rem}
.cta-meta{margin:.6rem 0 0;color:var(--muted);font-size:.9rem}
.hero-art .card{border-radius:18px;background:var(--card);box-shadow:var(--shadow);overflow:hidden}
.hero-art img{display:block;width:100%;height:auto}

.tabs-like{display:flex;gap:16px;justify-content:center;margin-top:24px}
.tab{background:#e8f0f2;color:#8aa; padding:10px 16px;border-radius:12px;font-weight:700}
.tab-hot{background:var(--pink);color:#fff;position:relative}
.tab-hot::before{content:"";position:absolute;bottom:-8px;left:22px;border:10px solid transparent;border-top-color:var(--pink)}
.tab-new{background:#eaeff7;color:#7a9}

/* Features */
.feature-grid{list-style:none;margin:12px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.feature{background:var(--card);border-radius:16px;padding:18px;box-shadow:var(--shadow)}
.feature-emoji{font-size:1.6rem}
.feature-title{margin:.4rem 0 .25rem;font-size:1.1rem}
.feature-desc{color:var(--muted);margin:0}

/* Download strip */
.strip{background:#fff;border-top:1px dashed #f3c7d3;border-bottom:1px dashed #f3c7d3;padding:26px 0;margin:34px 0}
.strip-inner{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.download-card,.changelog{background:var(--card);border-radius:16px;padding:18px;box-shadow:var(--shadow)}
.download-title{margin:.25rem 0 1rem;font-size:1.2rem}
.kv{display:grid;grid-template-columns:120px 1fr;gap:10px;margin:0}
.kv dt{font-weight:700}
.kv dd{margin:0}
code{background:#fff3f7;padding:.25rem .5rem;border-radius:8px;display:inline-block}
.btn-copy{margin-left:8px;padding:6px 10px;border-radius:10px;border:1px solid #f0b6c7;background:#fff;cursor:pointer}
.btn-copy:hover{background:#fff7fb}
.list{margin:0;padding-left:1.2rem}
.list li{margin:.35rem 0}

/* Requirements */
.req-list{margin:.2rem 0 0;padding-left:1.2rem}
.note{color:var(--muted);margin-top:.6rem}

/* FAQ */
.faq{background:var(--card);border-radius:14px;padding:12px 14px;box-shadow:var(--shadow);margin:10px 0}
.faq summary{cursor:pointer;font-weight:700}
.faq p{margin:.6rem 0 0}

/* Footer */
.site-footer{background:#ffe9ef;padding:16px 0;margin-top:40px}
.footer-inner{display:flex;align-items:center;justify-content:space-between}
.footer-nav a{color:#a33c57;text-decoration:none;margin-left:16px}

/* Responsive */
@media (max-width: 900px){
  .hero-inner{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr 1fr}
  .strip-inner{grid-template-columns:1fr}
}
@media (max-width: 560px){
  .feature-grid{grid-template-columns:1fr}
  .nav{display:none}
}