/* カサナル v0.1.0 — モバイルファースト。テーマに依存しない ksn- プレフィックス */
:root{
	--ksn-bg:#FBFAF7; --ksn-surface:#FFFFFF; --ksn-ink:#232C3D; --ksn-soft:#5B657A; --ksn-line:#E4E2DA;
	--ksn-accent:#0E8C74; --ksn-accent-ink:#0B6E5C; --ksn-accent-soft:#DFF0EB;
	--ksn-heat0:#F3F1EA; --ksn-paint:#0E8C74; --ksn-best:#F5A623; --ksn-sat:#3B6FD4; --ksn-sun:#D45B4A;
}
@media (prefers-color-scheme: dark){
	:root{
		--ksn-bg:#171C26; --ksn-surface:#1F2634; --ksn-ink:#EAEDF2; --ksn-soft:#9AA4B5; --ksn-line:#333D4F;
		--ksn-accent:#2FBFA0; --ksn-accent-ink:#6ADBC2; --ksn-accent-soft:#1E3A34;
		--ksn-heat0:#242C3B; --ksn-paint:#2FBFA0; --ksn-sat:#7CA3EF; --ksn-sun:#EF8D7C;
	}
}
.ksn, .ksn *{box-sizing:border-box}
.ksn{
	font-family:"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic UI","Noto Sans JP",system-ui,sans-serif;
	color:var(--ksn-ink); font-size:15px; line-height:1.6; max-width:760px; margin:0 auto;
}
.ksn-panel{background:var(--ksn-surface); border:1px solid var(--ksn-line); border-radius:12px; padding:18px 16px; margin:8px 0}
.ksn-brand{display:flex; align-items:baseline; gap:10px; flex-wrap:wrap; margin-bottom:10px}
.ksn-logo{font-size:20px; font-weight:800; letter-spacing:.06em; color:var(--ksn-ink); text-decoration:none}
.ksn-dot{color:var(--ksn-accent)}
.ksn-tg{color:var(--ksn-soft); font-size:12px}
.ksn-h2{font-size:17px; margin:10px 0 4px; font-weight:800}
.ksn-h3{font-size:14px; margin:18px 0 6px; font-weight:800}
.ksn-ok{color:var(--ksn-accent-ink)}
.ksn-hint{color:var(--ksn-soft); font-size:13px; margin:0 0 12px}
.ksn-muted{color:var(--ksn-soft); font-size:12px}
.ksn-label{font-size:13px; font-weight:700; display:block; margin:8px 0 4px}
.ksn-loading{color:var(--ksn-soft)}

.ksn-input{
	font:inherit; width:100%; padding:11px 12px; border:1px solid var(--ksn-line); border-radius:9px;
	background:var(--ksn-surface); color:var(--ksn-ink); margin-bottom:8px;
}
.ksn-title{font-weight:700}
.ksn-formrow{display:grid; gap:6px; margin-bottom:6px}
@media(min-width:560px){ .ksn-formrow{grid-template-columns:1fr 1fr} }

.ksn-moderow{display:flex; gap:8px; margin:4px 0 14px}
.ksn-modecard{
	flex:1; font:inherit; text-align:left; padding:12px 14px; border-radius:11px; cursor:pointer;
	border:1.5px solid var(--ksn-line); background:var(--ksn-surface); color:var(--ksn-soft);
}
.ksn-modecard b{display:block; font-size:15px; color:var(--ksn-ink)}
.ksn-modecard small{font-size:11px; line-height:1.5}
.ksn-modecard.on{border-color:var(--ksn-accent); background:var(--ksn-accent-soft)}
.ksn-modecard.on b, .ksn-modecard.on small{color:var(--ksn-accent-ink)}
.ksn-optin{display:flex; gap:7px; align-items:flex-start; font-size:12px; color:var(--ksn-soft); margin:2px 0 10px}
.ksn-optin input{margin-top:3px}
.ksn-quickrow{display:flex; gap:6px; align-items:center; flex-wrap:wrap; margin-bottom:4px}
.ksn-quicklabel{font-size:12.5px; font-weight:700}
.ksn-danger{border-color:var(--ksn-sun); color:var(--ksn-sun)}
#ksn-tip{
	position:fixed; z-index:9999; background:var(--ksn-ink); color:var(--ksn-bg); font-size:12px;
	padding:6px 10px; border-radius:8px; pointer-events:none; opacity:0; max-width:280px; line-height:1.5;
	transition:opacity .15s;
	font-family:"Hiragino Sans","Hiragino Kaku Gothic ProN",system-ui,sans-serif;
}
#ksn-tip.show{opacity:1}
.ksn-decided{
	background:color-mix(in srgb, var(--ksn-best) 14%, var(--ksn-surface));
	border:1.5px solid var(--ksn-best); border-radius:10px; padding:10px 14px;
	font-size:14px; margin:4px 0 10px;
}
.ksn-best li.sub{border-style:dashed}
.ksn-best li.sub .ksn-rank{color:var(--ksn-soft); font-size:14px}
.ksn-decidebtn{padding:6px 12px; font-size:12.5px; border-color:var(--ksn-accent); color:var(--ksn-accent-ink); white-space:nowrap}
.ksn-wari{margin-top:18px; background:var(--ksn-bg); border:1px solid var(--ksn-line); border-radius:10px; padding:14px}
.ksn-warirow{display:flex; gap:8px; align-items:center; flex-wrap:wrap; font-size:13.5px}
.ksn-warirow .ksn-input{width:110px; margin-bottom:0}
.ksn-warirow input[type=number]:last-of-type{width:70px}
.ksn-wariout{font-size:14.5px; font-weight:800; color:var(--ksn-accent-ink); margin:10px 0; font-variant-numeric:tabular-nums}
.ksn-wari > .ksn-input{margin:4px 0 10px}
.ksn-wari .ksn-primary{margin-top:0}

.ksn-calhead{display:flex; align-items:center; justify-content:space-between; margin:6px 0}
.ksn-nav{
	font:inherit; width:38px; height:38px; border:1px solid var(--ksn-line); border-radius:9px;
	background:var(--ksn-surface); color:var(--ksn-ink); cursor:pointer; font-size:16px;
}
.ksn-nav:disabled{opacity:.3}
.ksn-calgrid{display:grid; grid-template-columns:repeat(7,1fr); gap:4px}
.ksn-dow{font-size:11px; color:var(--ksn-soft); text-align:center}
.ksn-dow.sa{color:var(--ksn-sat)} .ksn-dow.su{color:var(--ksn-sun)}
.ksn-dcell{
	aspect-ratio:1; font:inherit; font-size:14px; border:1px solid transparent; border-radius:9px;
	background:none; color:var(--ksn-ink); cursor:pointer; min-height:40px;
}
.ksn-dcell.sa{color:var(--ksn-sat)} .ksn-dcell.su{color:var(--ksn-sun)}
.ksn-dcell.sel{background:var(--ksn-accent); color:#fff !important; font-weight:700}
.ksn-dcell:disabled{color:var(--ksn-line)}
.ksn-dcell.lock{color:var(--ksn-line)}
.ksn-prolegend{margin:6px 0 0}
.ksn-selrow{margin-top:12px}
.ksn-selcount{color:var(--ksn-accent-ink)}
.ksn-seltags{display:flex; flex-wrap:wrap; gap:6px; margin:4px 0 8px}
.ksn-tag{
	font-size:12px; background:var(--ksn-accent-soft); color:var(--ksn-accent-ink);
	border-radius:999px; padding:3px 11px; font-weight:600;
}

.ksn-primary{
	font:inherit; font-weight:700; font-size:15px; width:100%; padding:13px; margin-top:10px;
	background:var(--ksn-accent); color:#fff; border:none; border-radius:10px; cursor:pointer;
}
.ksn-primary:disabled{opacity:.45}
.ksn-abtn{display:block; text-align:center; text-decoration:none}
.ksn-ghost{
	font:inherit; font-weight:600; font-size:13.5px; padding:10px 14px;
	background:none; border:1px solid var(--ksn-line); border-radius:9px; color:var(--ksn-ink); cursor:pointer;
}
.ksn-btnrow{display:grid; gap:8px; margin-top:10px}
@media(min-width:560px){ .ksn-btnrow{grid-template-columns:auto 1fr} .ksn-primary{margin-top:0} }

.ksn-url{
	font-family:ui-monospace,SFMono-Regular,Menlo,monospace; font-size:13px; word-break:break-all;
	background:var(--ksn-bg); border:1px dashed var(--ksn-line); border-radius:9px; padding:10px 12px; margin-bottom:12px;
}
.ksn-sharerow{display:grid; grid-template-columns:1fr 1fr; gap:8px}
@media(min-width:560px){ .ksn-sharerow{grid-template-columns:repeat(4,1fr)} }
.ksn-share{
	font:inherit; font-weight:700; font-size:13.5px; text-align:center; padding:11px 8px;
	border:none; border-radius:9px; color:#fff; text-decoration:none; cursor:pointer; display:block;
}
.ksn-line{background:#06C755} .ksn-x{background:#111}
.ksn-mail{background:#5B657A}
.ksn-copy{background:var(--ksn-surface); color:var(--ksn-ink); border:1px solid var(--ksn-line)}
.ksn-next{margin-top:16px; border-top:1px solid var(--ksn-line); padding-top:14px}
.ksn-next b{display:block; margin-bottom:8px; font-size:14px}

.ksn-tabs{display:flex; gap:6px; margin:8px 0 14px}
.ksn-tab{
	flex:1; font:inherit; font-weight:700; font-size:13.5px; padding:11px 8px; cursor:pointer;
	border:1.5px solid var(--ksn-line); background:var(--ksn-surface); color:var(--ksn-soft); border-radius:9px;
}
.ksn-tab.on{border-color:var(--ksn-accent); color:var(--ksn-accent-ink); background:var(--ksn-accent-soft)}

.ksn-gridwrap{overflow-x:auto; -webkit-overflow-scrolling:touch; padding-bottom:4px; margin:6px -4px}
.ksn-grid{border-collapse:separate; border-spacing:3px; user-select:none; -webkit-user-select:none}
.ksn-grid th{font-size:11px; color:var(--ksn-soft); font-weight:600; padding:2px 4px; white-space:nowrap; background:none; border:none}
.ksn-time{text-align:right; font-variant-numeric:tabular-nums; vertical-align:top; transform:translateY(-8px)}
.ksn-day .ksn-dt{display:block; font-size:12.5px; color:var(--ksn-ink); font-weight:700}
.ksn-dt.sa{color:var(--ksn-sat)} .ksn-dt.su{color:var(--ksn-sun)}
.ksn-cell{
	min-width:52px; width:52px; height:26px; border-radius:6px; background:var(--ksn-heat0);
	border:1px solid transparent; touch-action:none; position:relative; padding:0;
}
.ksn-paint .ksn-cell{cursor:pointer}
.ksn-paint .ksn-cell.on{background:var(--ksn-paint)}
.ksn-heat .ksn-cell.best{border:2px solid var(--ksn-best)}
.ksn-mark{
	position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
	font-size:11px; font-weight:800; color:#fff; pointer-events:none;
}
.ksn-people{display:flex; gap:6px; flex-wrap:wrap; margin-bottom:8px}
.ksn-person{font-size:12.5px; border:1px solid var(--ksn-line); border-radius:999px; padding:3px 12px; font-weight:600}
.ksn-person.c0{border-color:#E06A4E} .ksn-person.c1{border-color:#4E79E0}
.ksn-person.c2{border-color:#B056C7} .ksn-person.c3{border-color:#0E8C74}
.ksn-best{list-style:none; margin:6px 0 12px; padding:0; display:grid; gap:8px}
.ksn-best li{
	display:flex; gap:10px; align-items:center; flex-wrap:wrap; font-variant-numeric:tabular-nums;
	background:var(--ksn-bg); border:1px solid var(--ksn-line); border-radius:9px; padding:11px 13px;
}
.ksn-rank{font-weight:800; color:var(--ksn-best); font-size:16px}
.ksn-slot{font-weight:700; font-size:14px}
.ksn-who{color:var(--ksn-soft); font-size:12px; margin-left:auto}

.ksn-viral{
	margin-top:18px; border-top:1px solid var(--ksn-line); padding-top:14px;
	display:flex; gap:10px; align-items:center; flex-wrap:wrap; font-size:13px;
}
.ksn-vb{
	background:var(--ksn-ink); color:var(--ksn-bg); border-radius:999px; padding:9px 18px;
	font-weight:700; text-decoration:none; font-size:13px;
}
.ksn-toast{
	position:fixed; left:50%; bottom:24px; transform:translateX(-50%) translateY(8px); z-index:9999;
	background:var(--ksn-ink); color:var(--ksn-bg); padding:11px 20px; border-radius:999px; font-size:13px;
	opacity:0; pointer-events:none; transition:opacity .25s, transform .25s; max-width:92vw; text-align:center;
}
.ksn-toast.show{opacity:1; transform:translateX(-50%)}
@media (prefers-reduced-motion: reduce){ .ksn *{transition:none !important} }

/* ---------------- LP ---------------- */
.ksn-lp{
	font-family:"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic UI","Noto Sans JP",system-ui,sans-serif;
	color:var(--ksn-ink); max-width:860px; margin:0 auto; line-height:1.75;
	background:var(--ksn-bg); border-radius:14px; overflow:hidden;
}
.ksn-hero{text-align:center; padding:36px 16px 28px}
.ksn-hero .ksn-logo{font-size:34px}
.ksn-hero h1{font-size:clamp(22px, 5.5vw, 34px); font-weight:800; margin:14px 0 8px; letter-spacing:.02em; text-wrap:balance}
.ksn-hero p{color:var(--ksn-soft); font-size:15px; margin:0 0 22px}
.ksn-cta{
	display:inline-block; background:var(--ksn-accent); color:#fff; font-weight:800; font-size:16px;
	padding:15px 34px; border-radius:999px; text-decoration:none;
}
.ksn-cta:hover{filter:brightness(1.05); color:#fff}
.ksn-cta-note{font-size:12px; color:var(--ksn-soft); margin-top:8px}
.ksn-steps{display:grid; gap:12px; padding:8px 16px}
@media(min-width:640px){ .ksn-steps{grid-template-columns:repeat(3,1fr)} }
.ksn-step{background:var(--ksn-surface); border:1px solid var(--ksn-line); border-radius:12px; padding:18px}
.ksn-step .num{font-size:11px; font-weight:800; letter-spacing:.14em; color:var(--ksn-accent-ink)}
.ksn-step b{display:block; font-size:15px; margin:4px 0 6px}
.ksn-step p{font-size:13px; color:var(--ksn-soft); margin:0}
.ksn-features{padding:20px 16px}
.ksn-features h2{font-size:19px; font-weight:800; text-align:center; margin:16px 0}
.ksn-fgrid{display:grid; gap:12px}
@media(min-width:640px){ .ksn-fgrid{grid-template-columns:1fr 1fr} }
.ksn-feature{background:var(--ksn-surface); border:1px solid var(--ksn-line); border-radius:12px; padding:16px 18px}
.ksn-feature b{font-size:14.5px}
.ksn-feature p{font-size:13px; color:var(--ksn-soft); margin:4px 0 0}
.ksn-lp .ksn-bottom{text-align:center; padding:30px 16px 40px}