/* 東洋医学臨床推論支援システム — Production Preview Stylesheet */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#fbfaf7;
  --fg:#1c1917;
  --muted:#57534e;
  --accent:#1e3a5f;
  --accent-dk:#0f2340;
  --accent-light:#2d5f8a;
  --line:#d6d3d1;
  --line-soft:#e7e5e4;
  --card:#fff;
  --card-shadow:0 1px 2px rgba(28,25,23,.04),0 2px 8px rgba(28,25,23,.06);
  --radius:4px;
  --nav-bg:#0f2340;
  --nav-fg:#f5f5f4;
  --warn-bg:#fef7ed;
  --warn-border:#d97706;
  --safe-bg:#f0fdf4;
  --safe-border:#15803d;
  --info-bg:#eff6ff;
  --info-border:#1e40af;
  --max-w:920px;
  --max-w-wide:1080px;
  --font-jp:"Hiragino Mincho ProN","Yu Mincho","Noto Serif JP",serif;
  --font-sans:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic","Noto Sans JP",sans-serif;
}
html{font-size:16px;scroll-behavior:smooth}
body{background:var(--bg);color:var(--fg);font-family:var(--font-sans);line-height:1.85;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none;border-bottom:1px solid transparent;transition:border-color .15s}
a:hover{border-bottom-color:var(--accent)}
img{max-width:100%;height:auto;display:block}

/* ========== Header / Nav ========== */
.site-header{background:#fff;border-bottom:1px solid var(--line)}
.site-header-inner{max-width:var(--max-w-wide);margin:0 auto;padding:18px 24px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}
.site-title{font-family:var(--font-jp);font-size:1.05rem;font-weight:600;letter-spacing:.04em;color:var(--accent-dk)}
.site-title a{color:inherit;border-bottom:none}
.site-title small{display:block;font-size:.72rem;font-weight:400;color:var(--muted);letter-spacing:.02em;margin-top:2px;font-family:var(--font-sans)}
.site-nav{display:flex;flex-wrap:wrap;gap:18px;font-size:.85rem;align-items:center}
.site-nav a{color:var(--fg);opacity:.75;border-bottom:none;transition:opacity .15s;font-weight:500}
.site-nav a:hover{opacity:1;color:var(--accent)}
.site-nav a.active{opacity:1;color:var(--accent);font-weight:600}

/* ========== Hero ========== */
.page-hero{background:linear-gradient(180deg,#fff 0%,#f5f4f0 100%);border-bottom:1px solid var(--line);padding:56px 24px 48px;text-align:center}
.page-hero h1{font-family:var(--font-jp);font-size:1.85rem;font-weight:600;color:var(--accent-dk);letter-spacing:.04em;margin-bottom:14px}
.page-hero .subtitle{color:var(--muted);font-size:.95rem;max-width:680px;margin:0 auto;line-height:1.75}

.hero-top{background:linear-gradient(180deg,#0f2340 0%,#1e3a5f 100%);color:#fff;padding:72px 24px 64px;text-align:center}
.hero-top h1{font-family:var(--font-jp);font-size:2.1rem;font-weight:500;letter-spacing:.06em;margin-bottom:16px;line-height:1.45}
.hero-top .hero-lead{font-size:1.05rem;max-width:720px;margin:0 auto 14px;opacity:.92;line-height:1.85}
.hero-top .hero-subtitle{font-size:.85rem;opacity:.7;letter-spacing:.05em;font-family:var(--font-sans)}

/* ========== Container ========== */
.container{max-width:var(--max-w);margin:0 auto;padding:48px 24px}
.container-wide{max-width:var(--max-w-wide);margin:0 auto;padding:48px 24px}

h2{font-family:var(--font-jp);font-size:1.45rem;font-weight:600;color:var(--accent-dk);margin:48px 0 16px;padding-bottom:8px;border-bottom:1px solid var(--line)}
h2:first-child{margin-top:0}
h3{font-family:var(--font-jp);font-size:1.15rem;font-weight:600;color:var(--accent);margin:32px 0 10px}
h4{font-size:1rem;font-weight:600;color:var(--fg);margin:20px 0 6px}
p{margin-bottom:16px}
ul,ol{margin-bottom:16px;padding-left:1.6em}
li{margin-bottom:6px}
strong{font-weight:600;color:var(--accent-dk)}
.lead{font-size:1.05rem;color:var(--muted);margin-bottom:24px;line-height:1.85}

/* ========== Cards / Boxes ========== */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px 28px;margin:20px 0;box-shadow:var(--card-shadow)}
.card h3{margin-top:0}
.card p:last-child{margin-bottom:0}

.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;margin:24px 0}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin:20px 0}

.nav-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;box-shadow:var(--card-shadow);transition:transform .15s,box-shadow .15s;display:block}
.nav-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(28,25,23,.08);border-color:var(--accent);border-bottom:1px solid var(--accent)}
.nav-card h3{margin:0 0 8px;color:var(--accent-dk);font-size:1.1rem}
.nav-card p{margin:0;color:var(--muted);font-size:.92rem;line-height:1.7}
.nav-card .status-tag{display:inline-block;font-size:.72rem;background:#f5f4f0;color:var(--muted);padding:2px 8px;border-radius:3px;margin-top:8px;font-family:var(--font-sans)}

/* ========== Boxes ========== */
.safe-box{background:var(--safe-bg);border-left:3px solid var(--safe-border);padding:18px 22px;margin:24px 0;border-radius:var(--radius)}
.warn-box{background:var(--warn-bg);border-left:3px solid var(--warn-border);padding:18px 22px;margin:24px 0;border-radius:var(--radius)}
.info-box{background:var(--info-bg);border-left:3px solid var(--info-border);padding:18px 22px;margin:24px 0;border-radius:var(--radius)}
.note-box{background:#fafaf9;border:1px solid var(--line-soft);padding:18px 22px;margin:24px 0;border-radius:var(--radius);font-size:.92rem;color:var(--muted)}

/* ========== Tables ========== */
table{width:100%;border-collapse:collapse;margin:20px 0;font-size:.92rem;background:var(--card)}
th,td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top}
th{background:var(--accent-dk);color:#fff;font-weight:600;font-size:.88rem}
tr:nth-child(even) td{background:#fafaf9}

/* ========== Stats ========== */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin:28px 0}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px 16px;text-align:center}
.stat .num{display:block;font-family:var(--font-jp);font-size:1.85rem;font-weight:600;color:var(--accent);line-height:1.2}
.stat .label{display:block;font-size:.78rem;color:var(--muted);margin-top:6px;letter-spacing:.02em}

/* ========== Quote ========== */
blockquote{margin:24px 0;padding:20px 28px;background:#faf8f4;border-left:4px solid var(--accent);font-family:var(--font-jp);color:var(--accent-dk);line-height:1.85;font-size:1.02rem}
blockquote .source{display:block;margin-top:10px;font-size:.82rem;color:var(--muted);font-family:var(--font-sans);font-style:normal}

/* ========== Footer ========== */
.site-footer{background:var(--accent-dk);color:#d6d3d1;padding:36px 24px 24px;margin-top:64px;font-size:.85rem}
.site-footer-inner{max-width:var(--max-w-wide);margin:0 auto}
.footer-meta{display:flex;flex-wrap:wrap;gap:8px 18px;margin-bottom:18px}
.footer-meta a{color:#93c5fd;border-bottom:none}
.footer-meta a:hover{border-bottom-color:#93c5fd}
.footer-bottom{border-top:1px solid #1e3a5f;padding-top:14px;font-size:.78rem;color:#a8a29e;display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px}
.preview-note{font-size:.72rem;color:#a8a29e;opacity:.7;font-style:italic}

/* ========== Responsive ========== */
@media(max-width:720px){
  .hero-top h1{font-size:1.55rem}
  .hero-top{padding:48px 18px 40px}
  .page-hero{padding:36px 18px 32px}
  .page-hero h1{font-size:1.35rem}
  .site-header-inner{flex-direction:column;align-items:flex-start;gap:8px;padding:14px 18px}
  .site-nav{gap:12px;font-size:.8rem}
  .container,.container-wide{padding:32px 18px}
  h2{font-size:1.2rem;margin-top:36px}
  .stat .num{font-size:1.4rem}
}