*{box-sizing:border-box} :root{--bg:#060b10;--bg2:#111820;--panel:rgba(25,31,39,.82);--panel2:rgba(19,25,32,.95);--line:rgba(255,255,255,.13);--white:#fff;--muted:#b9c1ca;--green:#35d14a;--red:#ff3347;--red2:#ca0d1e;--blue:#1565c0} html,body{margin:0;min-height:100%;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic",sans-serif;background:radial-gradient(circle at 50% 10%,#17212b 0,#080d13 42%,#030507 100%);color:var(--white)} body{padding:env(safe-area-inset-top) 0 env(safe-area-inset-bottom);overflow-x:hidden}.phone-shell{width:min(100%,520px);margin:0 auto;padding:18px 14px 72px}.app-card{min-height:100dvh;display:flex;flex-direction:column;gap:16px}.connect-card{width:100%;display:flex;align-items:center;gap:16px;padding:17px 20px;border:2px solid var(--green);border-radius:30px;background:linear-gradient(135deg,rgba(22,36,29,.96),rgba(11,17,22,.92));color:white;box-shadow:0 0 20px rgba(53,209,74,.16),inset 0 0 18px rgba(53,209,74,.06);cursor:pointer;text-align:left}.connect-card.connected{border-color:var(--green);box-shadow:0 0 28px rgba(53,209,74,.28),inset 0 0 18px rgba(53,209,74,.09)}.connect-card.searching{opacity:.82}.bt-icon{flex:0 0 56px;width:56px;height:56px;border-radius:50%;background:linear-gradient(145deg,#47e85a,#159928);display:grid;place-items:center;font-size:40px;font-weight:900;line-height:1;box-shadow:0 10px 18px rgba(0,0,0,.35)}.connect-texts{min-width:0;display:grid;gap:4px}.connect-texts strong{font-size:clamp(1.55rem,7vw,2.2rem);line-height:1;color:var(--green);letter-spacing:.02em}.connect-texts span{color:#d1d6db;font-size:1.02rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chevron{margin-left:auto;font-size:3.1rem;color:#d3d6da;line-height:1}.current-panel{text-align:center;padding:10px 4px 0}.panel-title{margin:0 0 16px;color:#f5f6f7;font-size:clamp(1.35rem,5.7vw,1.9rem);font-weight:700}.bpm-row{display:flex;align-items:center;justify-content:center;gap:25px}.heart{width:72px;height:72px;position:relative;color:#ff4052;font-size:74px;line-height:1;filter:drop-shadow(0 5px 8px rgba(0,0,0,.35));animation:pulse 1s infinite ease-in-out}.heart span{position:absolute;color:white;font-size:35px;left:18px;top:18px;font-weight:800}.heart.paused{animation:none;opacity:.6}.bpm-value{display:flex;align-items:flex-end;gap:15px}.bpm-value span{font-size:clamp(6.2rem,25vw,9.6rem);line-height:.85;font-weight:900;letter-spacing:-.08em;text-shadow:0 7px 12px rgba(0,0,0,.42)}.bpm-value em{font-style:normal;font-size:clamp(1.65rem,7vw,2.55rem);font-weight:650;margin-bottom:12px}.zone{min-height:28px;color:var(--green);font-weight:700;font-size:1rem}.zone.warn{color:#ffd75b}.zone.danger{color:#ff6674}.timer{margin-top:2px;color:#c8d0d8;font-variant-numeric:tabular-nums;font-size:1.2rem}.record-panel{display:grid;place-items:center;padding:18px 0 14px}.record-btn{width:clamp(230px,61vw,290px);height:clamp(230px,61vw,290px);border-radius:50%;border:14px solid rgba(255,255,255,.12);background:radial-gradient(circle at 34% 24%,#ff5364 0,#ff273b 45%,#d41325 100%);color:white;font-size:clamp(2.1rem,9vw,3.1rem);font-weight:900;letter-spacing:.02em;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;box-shadow:0 16px 0 var(--red2),0 28px 40px rgba(0,0,0,.42),inset 0 5px 0 rgba(255,255,255,.22);cursor:pointer}.record-btn span{font-size:3.4rem;line-height:1}.record-btn:disabled{filter:grayscale(.75);opacity:.55;cursor:not-allowed}.record-btn.recording{background:radial-gradient(circle at 34% 24%,#46e75a 0,#2cc843 48%,#169326 100%);box-shadow:0 16px 0 #0c6f19,0 28px 40px rgba(0,0,0,.42),inset 0 5px 0 rgba(255,255,255,.18)}.stats-card{display:grid;grid-template-columns:repeat(3,1fr);padding:22px 10px;border:1px solid var(--line);border-radius:20px;background:linear-gradient(135deg,rgba(30,38,48,.88),rgba(16,21,28,.92));box-shadow:0 12px 28px rgba(0,0,0,.25);margin-top:6px}.stat{text-align:center;padding:2px 6px}.stat+.stat{border-left:1px solid rgba(255,255,255,.13)}.stat span{display:block;color:#f0f3f5;font-size:1.06rem}.stat strong{display:block;margin-top:8px;font-size:clamp(2.7rem,11vw,4rem);line-height:.9}.stat small{color:#d0d5da;font-size:1rem}.graph-card{border:1px solid var(--line);border-radius:20px;background:linear-gradient(135deg,rgba(30,38,48,.88),rgba(16,21,28,.92));box-shadow:0 12px 28px rgba(0,0,0,.22);padding:18px 14px 12px}.graph-card header{display:flex;align-items:center;justify-content:space-between;gap:10px}.graph-card h2{margin:0;font-size:1.35rem}.graph-card header span{color:var(--green);font-weight:700}.graph-card canvas{width:100%;height:210px;display:block}.settings{border:1px solid var(--line);border-radius:16px;background:rgba(15,20,26,.74);padding:0 14px}.settings summary{cursor:pointer;padding:14px 4px;color:#d9dee4;font-weight:700}.settings-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;padding:0 0 12px}.settings label{display:grid;gap:6px;color:#cbd2d9;font-size:.9rem}.settings input,.settings select{width:100%;border:1px solid rgba(255,255,255,.2);border-radius:10px;padding:10px;background:#0b1117;color:white}.device-info{display:flex;flex-wrap:wrap;gap:12px;color:#cbd2d9;font-size:.9rem;padding-bottom:12px}.sub-actions{display:flex;gap:10px;padding-bottom:14px}.mini-btn{border:0;border-radius:999px;padding:10px 15px;background:#263340;color:white;cursor:pointer}.mini-btn.danger{background:#5c1a24}.log{margin:0;color:#abb4bd;font-size:.9rem;text-align:center;min-height:1.3em}.footer{position:fixed;left:0;right:0;bottom:0;text-align:center;padding:6px 8px calc(6px + env(safe-area-inset-bottom));font-size:.78rem;color:#4aa3ff;background:rgba(4,7,10,.72);backdrop-filter:blur(8px);border-top:1px solid rgba(255,255,255,.08);z-index:20}.footer p{margin:0}.footer a{color:#4aa3ff;text-decoration:none;font-weight:700}.ad-panel{max-width:520px;margin:6px auto 0;border:1px solid #d7e6f8;border-radius:10px;background:#fff;overflow:hidden;color:#222}.ad-panel[hidden]{display:none!important;margin:0!important;padding:0!important;border:0!important;height:0!important;overflow:hidden!important}.ad-panel-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:5px 8px;background:#f4f8ff;border-bottom:1px solid #d7e6f8}.ad-label,.ad-wait{font-size:.72rem;color:#4f6f91;line-height:1}.ad-close-btn{display:none;margin:0!important;padding:3px 8px!important;border:0;border-radius:999px;background:#1565c0;color:white;font-size:.72rem!important;font-weight:700;cursor:pointer}.ad-body{padding:8px;background:white}.fullscreen{width:100%;max-width:none}.fullscreen .graph-card{display:none}@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.08)}}@media(max-width:390px){.phone-shell{padding:12px 10px 70px}.connect-card{padding:14px;border-radius:24px}.bt-icon{width:48px;height:48px;flex-basis:48px;font-size:35px}.connect-texts strong{font-size:1.45rem}.connect-texts span{font-size:.9rem}.bpm-row{gap:16px}.heart{width:58px;height:58px;font-size:59px}.heart span{font-size:27px;left:15px;top:16px}.record-panel{padding:10px 0}.stats-card{padding:17px 8px}.graph-card canvas{height:170px}.graph-card{padding:15px 10px 10px}.settings-grid{grid-template-columns:1fr}}
/* 記録操作の直下に常時表示するリセットボタン */
.record-panel{gap:22px}
.reset-btn{min-width:150px;border:1px solid rgba(255,255,255,.28);border-radius:999px;padding:11px 22px;background:#5c1a24;color:#fff;font-size:1rem;font-weight:800;letter-spacing:.04em;cursor:pointer;box-shadow:0 7px 16px rgba(0,0,0,.28)}
.reset-btn:hover{background:#742430}
.reset-btn:active{transform:translateY(1px)}
.reset-btn:focus-visible{outline:3px solid #fff;outline-offset:3px}