/* ============================================================================
 * assets.css — Radiomics大全 共有スタイル
 * 家族別のアクセント色は各ページの :root で --fam 系変数を上書きする。
 * ========================================================================== */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#1a5fa8;--primary-dark:#0d3d6e;--accent:#00bcd4;
  --bg:#f0f4f8;--card:#fff;--text:#2d3748;--muted:#718096;--border:#e2e8f0;
  /* 家族テーマ（既定 = First-order ブルー） */
  --fam:#1a5fa8;--fam-dark:#0d3d6e;
  --hero1:#0d3d6e;--hero2:#1a5fa8;--hero3:#00bcd4;--hero-span:#7ee8fa;
  --hl1:#e8f4fd;--hl2:#d1eaf7;--hl-border:#1a5fa8;--hl-text:#0d3d6e;
  --cmp-even:#f8fafc;--footer-bg:#0d3d6e;
}
body{font-family:'Helvetica Neue','Hiragino Kaku Gothic ProN','Meiryo',sans-serif;background:var(--bg);color:var(--text);line-height:1.8}
a{color:var(--fam)}
img{max-width:100%}

/* Hero */
.hero{background:linear-gradient(135deg,var(--hero1) 0%,var(--hero2) 60%,var(--hero3) 100%);color:#fff;padding:64px 24px 80px;text-align:center;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23fff' fill-opacity='0.05'%3E%3Ccircle cx='30' cy='30' r='20'/%3E%3C/g%3E%3C/svg%3E") repeat}
.hero-content{position:relative;max-width:840px;margin:0 auto}
.hero-badge{display:inline-block;background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.4);border-radius:20px;padding:5px 16px;font-size:.8rem;letter-spacing:.1em;margin-bottom:20px}
.hero h1{font-size:clamp(1.8rem,5vw,3rem);font-weight:800;margin-bottom:12px;line-height:1.25}
.hero h1 span{color:var(--hero-span)}
.hero p{font-size:clamp(.95rem,2vw,1.15rem);opacity:.95;max-width:620px;margin:0 auto}
.wave{display:block;background:var(--bg);margin-top:-2px}

/* Layout */
main{max-width:1000px;margin:0 auto;padding:0 20px 80px}
section{margin-bottom:56px}
.section-label{display:inline-flex;align-items:center;gap:8px;font-size:.75rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--fam);margin-bottom:10px}
.section-label::before{content:'';display:inline-block;width:18px;height:3px;background:var(--accent);border-radius:2px}
h2{font-size:clamp(1.3rem,3vw,1.9rem);font-weight:700;color:var(--fam-dark);margin-bottom:20px}
h3{font-size:1.05rem;color:var(--fam-dark);margin:18px 0 10px}
.card{background:var(--card);border-radius:14px;padding:28px;box-shadow:0 1px 3px rgba(0,0,0,.06),0 4px 16px rgba(0,0,0,.04);border:1px solid var(--border)}
.highlight{background:linear-gradient(135deg,var(--hl1),var(--hl2));border-left:4px solid var(--hl-border);border-radius:0 10px 10px 0;padding:16px 20px;margin:16px 0;font-size:1rem;font-weight:600;color:var(--hl-text)}
.note{background:#f8fafc;border:1px solid var(--border);border-radius:10px;padding:12px 16px;font-size:.85rem;color:var(--muted);margin:14px 0}

/* Nav */
.sticky-nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);padding:10px 20px;display:flex;gap:6px;flex-wrap:wrap;justify-content:center;margin-bottom:8px}
.sticky-nav a{font-size:.8rem;font-weight:600;color:var(--fam);text-decoration:none;padding:5px 14px;border-radius:20px;border:1px solid var(--border);transition:background .15s,color .15s;white-space:nowrap}
.sticky-nav a:hover{background:var(--fam);color:#fff}
.sticky-nav a.active{background:var(--fam);color:#fff}

/* Lab */
.lab-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
@media(max-width:760px){.lab-grid{grid-template-columns:1fr}}
.lab-left{display:flex;flex-direction:column;gap:14px}
.pattern-btns{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.pat-btn{padding:7px 13px;border-radius:8px;border:2px solid var(--border);background:#fff;font-size:.82rem;font-weight:600;cursor:pointer;color:var(--text);transition:all .15s}
.pat-btn.active,.pat-btn:hover{border-color:var(--fam);background:var(--fam);color:#fff}
canvas{border-radius:10px;display:block;image-rendering:pixelated}
.noise-row{display:flex;align-items:center;gap:12px;font-size:.85rem}
.noise-row input{flex:1}
label{font-weight:600;font-size:.85rem;color:var(--muted)}
.canvases-row{display:flex;gap:12px;flex-wrap:wrap}
.canvas-box{display:flex;flex-direction:column;gap:4px}

/* Feature value panel */
.feat-panel{display:grid;grid-template-columns:1fr 1fr;gap:7px}
@media(max-width:480px){.feat-panel{grid-template-columns:1fr}}
.feat-val{background:#f8fafc;border:1px solid var(--border);border-radius:9px;padding:7px 11px;display:flex;flex-direction:column}
.feat-val .fname{font-size:.67rem;font-weight:700;color:var(--muted)}
.feat-val .fval{font-size:1.1rem;font-weight:800;color:var(--fam-dark);font-variant-numeric:tabular-nums}
.grp-title{grid-column:1/-1;font-size:.68rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--fam);margin-top:6px;border-bottom:1px solid var(--border);padding-bottom:2px}

/* Feature cards */
.feat-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:20px}
.feat-card{background:var(--card);border-radius:14px;border:1px solid var(--border);overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,.05);transition:transform .2s,box-shadow .2s}
.feat-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(0,0,0,.1)}
.fc-header{padding:14px 20px 10px;border-bottom:1px solid var(--border);display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;background:#fafafa}
.fc-name{font-size:1rem;font-weight:800;color:var(--fam-dark)}
.fc-en{font-size:.78rem;color:var(--muted)}
.fc-body{padding:14px 20px}
.fc-body p{font-size:.86rem;color:var(--text);margin-bottom:10px}
.formula-toggle{background:none;border:1px solid var(--border);border-radius:6px;padding:4px 10px;font-size:.75rem;cursor:pointer;color:var(--fam);font-weight:600}
.formula-toggle:hover{background:var(--fam);color:#fff}
.formula-box{display:none;background:#f8fafc;border-radius:8px;padding:6px 14px;font-size:.92rem;color:var(--fam-dark);margin-top:8px;line-height:1.5;overflow-x:auto}
.formula-box.open{display:block}
.formula-box .fdesc{font-size:.78rem;color:var(--muted);font-family:'Hiragino Kaku Gothic ProN','Meiryo',sans-serif}

/* Comparison table */
.cmp-wrap{overflow-x:auto}
.cmp-table{width:100%;border-collapse:collapse;font-size:.8rem;table-layout:fixed;min-width:600px}
.cmp-table th,.cmp-table td{border:1px solid var(--border);padding:7px 10px;text-align:center;font-variant-numeric:tabular-nums;white-space:normal;word-break:break-word}
.cmp-table thead th{background:var(--fam);color:#fff;font-weight:700;position:sticky;top:0;z-index:5}
.cmp-table tbody tr:nth-child(even) td{background:var(--cmp-even)}
.cmp-table td:first-child,.cmp-table th:first-child{text-align:left;font-weight:600;position:sticky;left:0;background:#fff;z-index:4;width:30%}
.cmp-table thead th:first-child{z-index:6}
.cmp-table tbody tr:nth-child(even) td:first-child{background:var(--cmp-even)}

/* Footer */
footer.site-footer{background:var(--footer-bg);color:rgba(255,255,255,.72);padding:30px 20px 18px;font-size:.85rem}
footer.site-footer .ft-inner{max-width:1000px;margin:0 auto;text-align:center}
footer.site-footer a{color:#fff;text-decoration:underline}
footer.site-footer .ft-lab{font-size:.95rem;color:#fff;font-weight:700;margin-bottom:4px}
footer.site-footer .ft-refs{font-size:.78rem;color:rgba(255,255,255,.6);margin-top:10px}
footer.site-footer .ft-disc{font-size:.78rem;color:rgba(255,255,255,.7);margin-top:10px;max-width:640px;margin-left:auto;margin-right:auto}
footer.site-footer .ft-copy{font-size:.72rem;color:rgba(255,255,255,.5);margin-top:14px;border-top:1px solid rgba(255,255,255,.15);padding-top:12px}

/* ---- 数式コピー（クリックでLaTeX） ---- */
mjx-container{cursor:pointer;transition:background .12s}
mjx-container:hover{background:rgba(26,95,168,.08);border-radius:5px}
.mj-toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%) translateY(12px);background:#1a202c;color:#fff;padding:10px 20px;border-radius:24px;font-size:.85rem;font-weight:700;box-shadow:0 6px 22px rgba(0,0,0,.28);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:9999}
.mj-toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---- 比較表の定性チップ（小/中/大） ---- */
.qchip{display:inline-block;min-width:2.6em;padding:2px 9px;border-radius:20px;font-weight:800;font-size:.78rem;line-height:1.5;text-align:center}
.q-low{background:#dbeafe;color:#1e40af}
.q-mid{background:#f1f5f9;color:#475569}
.q-high{background:#fee2e2;color:#b91c1c}
.q-na{background:#f8fafc;color:#94a3b8;font-weight:700;border:1px solid var(--border)}
.q-legend{font-size:.78rem;color:var(--muted);margin:4px 0 10px;display:flex;gap:7px;align-items:center;flex-wrap:wrap}
.q-legend .qchip{min-width:auto}
.q-legend .q-legnote{margin-left:4px}
/* 比較表セルのデータバー（最大/最小を明示） */
.qbar{position:relative;display:block;height:20px;border-radius:5px;background:#eef2f6;overflow:hidden;min-width:48px;box-shadow:inset 0 0 0 1px rgba(0,0,0,.04)}
.qbar-fill{position:absolute;left:0;top:0;height:100%;border-radius:5px;transition:width .4s ease}
.qbar-lab{position:absolute;right:3px;top:50%;transform:translateY(-50%);font-size:.6rem;font-weight:800;padding:1px 5px;border-radius:7px;line-height:1.4;z-index:2;letter-spacing:.02em}
.qbar-lab.mx{background:rgba(192,57,43,.92);color:#fff}
.qbar-lab.mn{background:rgba(58,111,196,.9);color:#fff}
.cmp-table td .qbar{margin:0 auto}
.cmp-table .cmp-en{font-size:.7rem;color:var(--muted);font-weight:600;display:block;margin-top:1px}

/* ---- 各特徴の「大きく/小さくなる条件」バッジ ---- */
.bigsmall{display:flex;flex-direction:column;gap:5px;margin-top:8px;font-size:.8rem}
.bigsmall .bs-row{display:flex;gap:7px;align-items:flex-start;line-height:1.5}
.bigsmall .bs-tag{flex:none;font-weight:800;border-radius:6px;padding:1px 8px;font-size:.72rem;margin-top:1px}
.bigsmall .bs-up{background:#fee2e2;color:#b91c1c}
.bigsmall .bs-down{background:#dbeafe;color:#1e40af}

/* ---- 行列の図解（マトリクス・グリッド） ---- */
.matfig{display:flex;gap:22px;flex-wrap:wrap;align-items:flex-start;margin:14px 0}
.matfig figure{margin:0}
.matfig figcaption{font-size:.78rem;color:var(--muted);text-align:center;margin-top:6px}
.mat-grid{border-collapse:collapse;font-variant-numeric:tabular-nums}
.mat-grid td,.mat-grid th{border:1px solid var(--border);width:34px;height:34px;text-align:center;font-size:.85rem;font-weight:700;padding:0}
.mat-grid th{background:#f1f5f9;color:var(--muted);font-size:.72rem;font-weight:700}
.mat-grid .gcell{background:#fff;color:var(--fam-dark)}
.mat-grid .gcell.hl{background:var(--hl1);outline:2px solid var(--fam)}
.mat-grid .mcell{background:#fff;color:var(--fam-dark)}
.mat-grid .mcell.pos{background:var(--hl2);color:var(--fam-dark)}
.mat-arrow{display:flex;align-items:center;font-size:1.6rem;color:var(--fam);align-self:center}
.mat-steps{counter-reset:mstep;margin:12px 0 4px;padding:0;list-style:none}
.mat-steps li{position:relative;padding:4px 0 4px 30px;font-size:.86rem;color:var(--text)}
.mat-steps li::before{counter-increment:mstep;content:counter(mstep);position:absolute;left:0;top:3px;width:21px;height:21px;border-radius:50%;background:var(--fam);color:#fff;font-size:.74rem;font-weight:800;display:flex;align-items:center;justify-content:center}
.legend-dots{display:flex;gap:14px;flex-wrap:wrap;font-size:.78rem;color:var(--muted);margin-top:6px}
.legend-dots span{display:inline-flex;align-items:center;gap:5px}
.legend-dots i{width:14px;height:14px;border-radius:3px;display:inline-block;border:1px solid var(--border)}

/* ---- 特徴量名（日本語 + 英語 + 略称）と実測値バー ---- */
.feat-val{transition:transform .12s,box-shadow .12s}
.feat-val:hover{transform:translateY(-1px);box-shadow:0 3px 12px rgba(0,0,0,.08)}
.feat-val .fname{font-size:.66rem;font-weight:700;color:var(--muted);line-height:1.25}
.feat-val .fname .en{display:block;font-size:.57rem;font-weight:600;color:#9aa6b2;letter-spacing:.01em}
.f-ab{color:var(--fam);font-weight:800}
.feat-val .fbar{height:5px;background:#e9eef3;border-radius:4px;margin-top:5px;overflow:hidden}
.feat-val .fbar>i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--fam),var(--accent));border-radius:4px;transition:width .55s cubic-bezier(.34,1.5,.5,1)}
/* 比較表セル内の略称 */
.cmp-table td:first-child .f-ab{margin-right:2px}
/* カードヘッダの略称（日本語の前） */
.fc-name .f-ab{margin-right:5px}