:root{
  --ink:#243b53; --accent:#0e7490; --accent2:#f59e0b;
  --bg:#f6f8fa; --card:#ffffff; --line:#d9e2ec; --warn:#b3261e;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:"Hiragino Sans","Noto Sans JP",system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.7;display:flex;flex-direction:column}
.wrap{max-width:1100px;margin:0 auto;padding:0 16px}
.wrap-wide{max-width:1400px;margin:0 auto;padding:0 12px;width:100%}
.site-header{background:var(--ink);color:#fff;padding:9px 0 8px;flex:none}
.site-header h1{margin:0 0 1px;font-size:1.2rem}
.tagline{margin:0 0 6px;opacity:.9;font-size:.85rem}
.main-nav{display:flex;flex-wrap:wrap;gap:8px}
.main-nav a,.nav-btn{color:#fff;text-decoration:none;background:transparent;border:1px solid rgba(255,255,255,.5);border-radius:999px;padding:4px 14px;font-size:.9rem;cursor:pointer}
.main-nav a:hover,.nav-btn:hover{background:rgba(255,255,255,.15)}
main{padding:12px 0 8px;flex:1;min-height:0;display:flex;flex-direction:column;width:100%;overflow:auto}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin:0 0 20px}
.card h2{margin:0 0 6px;color:var(--accent);font-size:1.15rem}
.card h3{margin:22px 0 6px;font-size:1.05rem}
label{display:block;margin:8px 0}
input[type=text],input[type=number],select{padding:6px 8px;border:1px solid var(--line);border-radius:6px;font-size:1rem;max-width:100%}
button{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:8px 16px;font-size:.95rem;cursor:pointer}
button:disabled{opacity:.45;cursor:default}
button.mode-btn{background:#e6eef5;color:var(--ink)}
button.mode-btn.active{background:var(--accent2);color:#fff}
.warn{color:var(--warn);font-weight:600}
.note{font-size:.85rem;color:#627d98}
.spec-table{border-collapse:collapse;width:100%;margin:8px 0}
.spec-table th,.spec-table td{border:1px solid var(--line);padding:6px 10px;text-align:left}
.spec-table th{background:#f0f4f8}
.spec-table td.num,.spec-table th.num{text-align:right;font-variant-numeric:tabular-nums}
.ad-bottom{flex:none;height:64px;background:#fff;border-top:1px solid var(--line);color:#9fb3c8;display:flex;align-items:center;justify-content:center;font-size:.9rem;z-index:900;box-shadow:0 -2px 8px rgba(36,59,83,.08);position:relative}
.ad-label{position:absolute;top:2px;left:10px;font-size:.68rem;color:#9fb3c8;letter-spacing:.08em}
[hidden]{display:none !important}
.modal{position:fixed;inset:0;z-index:1000}
.modal-backdrop{position:absolute;inset:0;background:rgba(20,32,46,.55)}
.modal-box{position:relative;background:#fff;max-width:760px;margin:4vh auto;max-height:92vh;overflow:auto;border-radius:12px;padding:24px;width:calc(100% - 24px)}
.modal-box h2{margin-top:0;color:var(--accent)}
.modal-close{position:absolute;top:10px;right:10px;background:#e6eef5;color:var(--ink);border-radius:50%;width:36px;height:36px;font-size:1.1rem;line-height:1}
.ad-full-box{text-align:center}
.ad-full-space{min-height:52vh;border:2px dashed var(--line);border-radius:12px;display:flex;align-items:center;justify-content:center;color:#9fb3c8;margin:10px 0;background:#fbfcfe}
.file-drop{display:block;border:2px dashed var(--accent);border-radius:10px;padding:10px;text-align:center;cursor:pointer;background:#f0f9ff}
.file-drop input{display:none}
canvas{max-width:100%;height:auto;border:1px solid var(--line);border-radius:8px;background:#fff}
.site-footer{padding:6px 0 8px;color:#627d98;font-size:.82rem;text-align:center;flex:none}
.site-footer p{margin:2px 0}
.footer-links a{color:var(--accent)}
/* 姉妹サイト */
.sister-nav{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:6px 0}
.sister-nav a{color:var(--accent);text-decoration:none;border:1px solid var(--line);background:#fff;border-radius:999px;padding:4px 14px;font-size:.85rem}
.sister-nav a:hover{border-color:var(--accent)}
.sister-nav .soon{color:#9fb3c8;border-style:dashed}
.sister-nav .here{background:var(--accent);color:#fff;border-color:var(--accent)}
.limit-box{border:2px solid var(--accent2);background:#fffaf0;border-radius:10px;padding:12px 16px;margin:12px 0}
.limit-box ul{margin:6px 0;padding-left:20px}
.limit-box p{margin:6px 0}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:16px;margin-top:4vh}
.hero-copy h2{font-size:1.3rem}
.hero-upload{display:flex;flex-direction:column}
.hero-upload .big-drop{flex:1;display:flex;flex-direction:column;justify-content:center}
.big-drop{padding:26px 16px}
.big-drop-title{display:block;font-size:1.12rem;font-weight:700;margin-bottom:6px}
.feature-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:16px}
.feature-card h3{margin:0 0 6px;color:var(--accent);font-size:1.05rem}
.feature-card p{margin:4px 0;font-size:.92rem}
@media(max-width:900px){.hero-grid,.feature-row{grid-template-columns:1fr}}

/* 収支シミュレーター専用 */
.sim-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
@media(max-width:900px){.sim-grid{grid-template-columns:1fr}}
.item-row{display:grid;grid-template-columns:1.3fr .8fr .8fr auto;gap:6px;align-items:center;margin:6px 0}
.item-row input{width:100%}
.del-btn{background:#e6eef5;color:var(--ink);padding:6px 10px}
.result-main{font-size:1.05rem}
.big{font-size:1.45rem;font-weight:700;color:var(--accent)}
.plus{color:#2e7d32;font-weight:700}
.minus{color:var(--warn);font-weight:700}
main>.wrap-wide{flex:1;min-height:0;overflow:auto}
@media(max-width:900px){
  .sister-nav{gap:5px;margin:4px 0}
  .sister-nav a{padding:2px 9px;font-size:.78rem}
  .site-footer p{margin:1px 0}
}
@media(max-width:900px){
  .sister-nav{display:block;line-height:2.1}
  .sister-nav a,.sister-nav .here,.sister-nav .soon{border:none;background:none;padding:0 3px;color:var(--accent)}
  .sister-nav .here{font-weight:700;text-decoration:underline}
  .sister-nav .soon{color:#9fb3c8}
}

/* アフィリエイト用品 */
.pr-label{font-size:.72rem;color:#92400e;background:#fef3c7;border:1px solid #f59e0b;border-radius:6px;padding:2px 8px;vertical-align:middle;white-space:nowrap}
.aff-grid{display:flex;flex-wrap:wrap;gap:12px}
.aff-card{display:flex;gap:12px;border:1px solid var(--line);border-radius:12px;padding:10px;background:#fff;max-width:430px}
.aff-card img{width:96px;height:96px;object-fit:contain;flex:none}
.aff-info p{margin:2px 0}
.aff-name{font-weight:700;font-size:.95rem}
.aff-name a{color:var(--accent);text-decoration:none}
.aff-desc{font-size:.85rem;color:#486581}
.aff-price{font-size:.85rem}
.aff-date{color:#9fb3c8;font-size:.78rem}
@media (max-width:640px){
  .aff-card{gap:10px;padding:8px;max-width:none}
  .aff-card img{width:80px;height:80px}
  .aff-name{font-size:.9rem}
  .aff-desc{font-size:.8rem}
  .aff-price{font-size:.82rem}
  .pr-label{display:inline-block;margin-top:4px}
}

/* スリムレイアウト（スクロールなしでアフィリエイトまで見せる） */
.header-row{display:flex;align-items:center;justify-content:space-between;gap:12px}
.header-title h1{font-size:1.08rem;margin:0}
.header-title .tagline{margin:0;font-size:.78rem}
.site-header{padding:7px 0}
.footer-row{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.sister-slim{font-size:.8rem}
.sister-slim a{color:var(--accent);text-decoration:none}
.sister-slim .here{font-weight:700;text-decoration:underline}
.sister-slim .soon{color:#9fb3c8}
.site-footer{padding:4px 0}
.site-footer .footer-links{margin:0}
.affiliate-sec{padding:10px 14px;margin:0 0 12px}
.affiliate-sec h2{font-size:1rem;margin:0 0 8px}
.aff-note{font-size:.72rem;color:#9fb3c8;font-weight:400}
.aff-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;flex-wrap:nowrap}
.aff-card{max-width:none;gap:8px;padding:8px;align-items:flex-start}
.aff-card img{width:56px;height:56px}
.aff-name{font-size:.82rem;line-height:1.45}
.aff-price{font-size:.78rem}
.aff-date{display:block;font-size:.68rem}
.card h3{margin-top:14px}
.limit-box{margin:0 0 12px}
@media(max-width:1100px){
  .aff-grid{display:flex;overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px}
  .aff-card{flex:0 0 172px}
}
@media(max-width:640px){
  .header-title .tagline{display:none}
  .aff-card img{width:52px;height:52px}
}

/* さらなる圧縮（結果カードとアフィリエイト帯） */
.site-header{padding:5px 0}
.header-title h1{font-size:1rem}
main{padding:6px 0 4px}
.ad-bottom{height:48px}
.cost-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}
@media(max-width:640px){.cost-grid{grid-template-columns:1fr}}
#resultCard .spec-table th,#resultCard .spec-table td{padding:4px 8px;font-size:.92rem}
#resultCard .result-main{margin:4px 0}
.affiliate-sec{padding:8px 12px}
.affiliate-sec h2{font-size:.92rem;margin:0 0 6px}
.aff-card{padding:6px;gap:6px}
.aff-card img{width:44px;height:44px}
.aff-name{font-size:.78rem;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.aff-price{font-size:.74rem}
.aff-date{display:none}

#resultCard .spec-table{line-height:1.45}
.affiliate-sec .aff-grid{align-items:stretch}
.aff-card{align-items:center}
.aff-info{min-width:0}
.affiliate-sec h2{font-size:.88rem;margin:0 0 4px}
.aff-price{font-size:.7rem;white-space:nowrap}
.aff-name{font-size:.76rem}
.sim-grid{gap:14px}
.card{padding:10px 14px}
/* 姉妹リンクを読みやすく（中間の大きさに） */
.sister-slim{font-size:.88rem;line-height:1.8;color:#486581}
.sister-slim a{padding:2px 3px;font-weight:600}
.site-footer{padding:6px 0}
.site-footer .footer-links{font-size:.85rem}

/* 姉妹サイト開閉 */
.sister-toggle{background:transparent;border:1px solid var(--line);color:var(--ink);border-radius:999px;padding:6px 18px;font-size:.9rem;cursor:pointer}
.sister-nav[hidden],.sister-slim[hidden]{display:none!important}