:root{--bg: #fbf7f6;--surface: #ffffff;--surface-2: #f4eeec;--text: #2d2426;--text-sub: #75696b;--border: #e8dfdd;--primary: #c8506a;--primary-soft: #f8e1e6;--on-primary: #ffffff;--period: #d9445f;--spot: #e68aa0;--pred: 217, 68, 95;--break: #b9b2c9;--ovulation: #4f8fd6;--kirakira: #e9b93c;--yuragi: #9a7cc9;--warn-bg: #fff3dc;--warn-text: #7a4b00;--alert-bg: #fde4e8;--alert-text: #8c1d33;--info-bg: #e7f0fb;--info-text: #1f4a7a;--radius: 14px;--shadow: 0 1px 3px rgba(60, 30, 40, .08);color-scheme:light}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--bg: #1b1617;--surface: #251f20;--surface-2: #30292a;--text: #f3eaeb;--text-sub: #b3a6a8;--border: #3d3435;--primary: #ef7d95;--primary-soft: #4a2730;--on-primary: #1b1617;--period: #f0627d;--spot: #f2a1b3;--pred: 240, 98, 125;--break: #6f6884;--ovulation: #7fb2ec;--kirakira: #e8c35c;--yuragi: #b49ae0;--warn-bg: #3d3018;--warn-text: #f5d394;--alert-bg: #4a1f28;--alert-text: #ffc2cd;--info-bg: #1d2c40;--info-text: #b8d4f5;--shadow: none;color-scheme:dark}}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--text);font-family:Hiragino Sans,Hiragino Kaku Gothic ProN,Noto Sans JP,Yu Gothic UI,Meiryo,system-ui,sans-serif;font-size:15px;line-height:1.6;-webkit-tap-highlight-color:transparent}button,input,select,textarea{font:inherit;color:inherit}.loading{padding:48px 16px;text-align:center;color:var(--text-sub)}.app{max-width:560px;margin:0 auto;min-height:100vh;padding:0 16px 96px}.app-header{display:flex;align-items:center;justify-content:space-between;padding:16px 0 8px}.app-header h1{font-size:18px;margin:0;letter-spacing:.04em}.app-header .date{color:var(--text-sub);font-size:13px}h2{font-size:17px;margin:20px 0 10px}h3{font-size:15px;margin:0 0 6px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin:12px 0;box-shadow:var(--shadow)}.card.hero{text-align:center;padding:22px 16px}.label{font-size:13px;color:var(--text-sub)}.big{font-size:26px;font-weight:700;line-height:1.3;margin:4px 0}.mid{font-size:18px;font-weight:700}.sub{color:var(--text-sub);font-size:13px}.muted{color:var(--text-sub)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--border);background:var(--surface);border-radius:999px;padding:10px 18px;cursor:pointer;font-weight:600;min-height:44px}.btn.primary{background:var(--primary);border-color:var(--primary);color:var(--on-primary)}.btn.ghost{background:transparent}.btn.danger{color:var(--period);border-color:var(--period);background:transparent}.btn.block{width:100%}.btn.small{min-height:34px;padding:4px 12px;font-size:13px}.btn:disabled{opacity:.5;cursor:default}.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.row.end{justify-content:flex-end}.stack>*+*{margin-top:10px}.seg{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:6px}.seg button{border:1px solid var(--border);background:var(--surface);border-radius:10px;padding:10px 4px;cursor:pointer;min-height:44px;font-weight:600}.seg button.on{background:var(--primary-soft);border-color:var(--primary);color:var(--primary)}.notice{border-radius:12px;padding:12px 14px;margin:12px 0;font-size:14px}.notice.warn{background:var(--warn-bg);color:var(--warn-text)}.notice.alert{background:var(--alert-bg);color:var(--alert-text)}.notice.info{background:var(--info-bg);color:var(--info-text)}.notice strong{display:block;margin-bottom:2px}.progress{height:8px;background:var(--surface-2);border-radius:999px;overflow:hidden;margin:10px 0 4px;position:relative}.progress>span{position:absolute;top:0;bottom:0}.progress .done{left:0;background:var(--primary)}.progress .win{background:rgba(var(--pred),.3)}.field{display:block;margin:10px 0}.field>span{display:block;font-size:13px;color:var(--text-sub);margin-bottom:4px}input[type=date],input[type=number],input[type=text],input[type=search],select,textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:var(--surface);min-height:44px}textarea{min-height:70px}.list{list-style:none;padding:0;margin:0}.list li{padding:10px 0;border-bottom:1px solid var(--border)}.list li:last-child{border-bottom:none}.list button.item{width:100%;text-align:left;background:none;border:none;padding:0;cursor:pointer}.nav{position:fixed;left:0;right:0;bottom:0;background:var(--surface);border-top:1px solid var(--border);display:flex;justify-content:center;padding-bottom:env(safe-area-inset-bottom);z-index:10}.nav-inner{display:grid;grid-template-columns:repeat(5,1fr);width:100%;max-width:560px}.nav button{background:none;border:none;padding:8px 0 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var(--break)}.cell .marks{display:flex;gap:2px;margin-top:auto;margin-bottom:4px;min-height:8px}.dot{width:8px;height:8px;border-radius:50%;display:inline-block}.dot.period{background:var(--period)}.dot.period.light{background:transparent;border:2px solid var(--period)}.dot.spot{background:var(--spot)}.dot.spot.light{background:transparent;border:2px solid var(--spot)}.dot.pred-spot{background:transparent;border:1.5px dashed var(--spot)}.dot.ovulation{background:var(--ovulation)}.dot.kirakira{background:var(--kirakira)}.dot.yuragi{background:var(--yuragi)}.dot.missed{background:var(--text-sub);width:5px;height:5px}.legend{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:12px;color:var(--text-sub);margin:12px 0}.legend span{display:inline-flex;align-items:center;gap:5px}.legend 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2px;overflow:hidden}.timeline .tick{position:absolute;top:3px;bottom:3px;border-radius:2px}.timeline .tick.light{background:var(--spot);opacity:.6}.timeline .tick.heavy{background:var(--period)}.timeline .end{position:absolute;top:0;bottom:0;width:3px;background:var(--text)}.axis{display:flex;justify-content:space-between;font-size:11px;color:var(--text-sub)}.badge{display:inline-block;font-size:12px;padding:1px 8px;border-radius:999px;background:var(--surface-2);color:var(--text-sub);margin-left:6px}.badge.red{background:var(--alert-bg);color:var(--alert-text)}.steps{display:flex;gap:4px;margin:12px 0 4px}.steps span{flex:1;height:4px;border-radius:2px;background:var(--border)}.steps span.on{background:var(--primary)}.choice{display:block;width:100%;text-align:left;border:1px solid var(--border);background:var(--surface);border-radius:12px;padding:12px 14px;margin:8px 0;cursor:pointer}.choice.on{border-color:var(--primary);background:var(--primary-soft)}.choice .sub{display:block}.disclaimer{font-size:12px;color:var(--text-sub);margin:24px 0 8px}.disclaimer ul{padding-left:18px;margin:4px 0}