:root{
  --bg:#e6e3f1; --bg-2:#d9d3ec; --surface:rgba(255,255,255,.62); --surface-2:rgba(255,255,255,.9);
  --text:#221a3a; --muted:#625a80; --line:rgba(34,26,58,.14); --scrim:rgba(30,22,60,.38);
  --gold:#b9820a; --shu:#e2502a; --asagi:#0f9e96; --momo:#d9337f;
  --display:"Dela Gothic One","Hiragino Kaku Gothic StdN","Hiragino Sans","Noto Sans JP",system-ui,sans-serif;
  --body:"Zen Kaku Gothic New","Hiragino Kaku Gothic ProN","Hiragino Sans","Noto Sans JP","Yu Gothic",system-ui,sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0d0a24; --bg-2:#1a1240; --surface:rgba(255,255,255,.06); --surface-2:rgba(255,255,255,.1);
    --text:#f5f0ff; --muted:#a79fca; --line:rgba(255,255,255,.13); --scrim:rgba(5,3,16,.62);
    --gold:#ffc857; --shu:#ff6a3d; --asagi:#3fd8cf; --momo:#ff5fa8; color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0d0a24; --bg-2:#1a1240; --surface:rgba(255,255,255,.06); --surface-2:rgba(255,255,255,.1);
  --text:#f5f0ff; --muted:#a79fca; --line:rgba(255,255,255,.13); --scrim:rgba(5,3,16,.62);
  --gold:#ffc857; --shu:#ff6a3d; --asagi:#3fd8cf; --momo:#ff5fa8; color-scheme:dark;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;overflow:hidden;background:var(--bg);color:var(--text);font-family:var(--body);
  overscroll-behavior:none;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;-webkit-text-size-adjust:100%}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;touch-action:manipulation;padding:0}
button:focus-visible,[role=button]:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
#cv{position:fixed;inset:0;width:100%;height:100%;display:block;touch-action:none}
#probeT,#probeB{position:fixed;left:0;width:1px;visibility:hidden;pointer-events:none}
#probeT{top:0;height:env(safe-area-inset-top,0px)}
#probeB{bottom:0;height:env(safe-area-inset-bottom,0px)}
#app{position:fixed;inset:0;pointer-events:none}
.screen{position:absolute;inset:0;display:none;pointer-events:auto}
.screen.on{display:flex}

/* ---------- home ---------- */
#home{justify-content:center;padding:calc(env(safe-area-inset-top,0px) + 12px) 16px calc(env(safe-area-inset-bottom,0px) + 14px)}
.wrap{width:100%;max-width:520px;height:100%;min-height:0;display:flex;flex-direction:column}
.top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.logo{display:flex;align-items:flex-end;gap:10px;line-height:1}
.logo .kanji{font-family:var(--display);font-size:clamp(44px,13vw,58px);letter-spacing:.02em;
  background:linear-gradient(170deg,var(--gold) 0%,var(--shu) 55%,var(--momo) 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.logo .latin{font-family:var(--display);font-size:13px;letter-spacing:.32em;color:var(--muted);padding-bottom:8px}
.top-btns{display:flex;gap:8px;padding-top:6px}
.icon-btn{width:42px;height:42px;border-radius:13px;background:var(--surface);border:1px solid var(--line);display:grid;place-items:center;
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);font-family:var(--display);font-size:17px}
.icon-btn svg{width:20px;height:20px}
.lead{margin:10px 2px 14px;color:var(--muted);font-size:13.5px;line-height:1.6}
.list{flex:1;min-height:0;overflow-y:auto;-webkit-overflow-scrolling:touch;display:flex;flex-direction:column;gap:10px;padding:3px 3px 12px;touch-action:pan-y}
.song{position:relative;display:flex;gap:14px;align-items:center;padding:10px 12px 10px 10px;border-radius:18px;background:var(--surface);
  border:1.5px solid var(--line);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);cursor:pointer;transition:transform .15s,border-color .2s,background .2s}
.song:active{transform:scale(.985)}
.song.sel{border-color:var(--c1);background:var(--surface-2)}
.song.sel .jacket{box-shadow:0 0 0 3px var(--bg),0 0 0 5px var(--c1)}
.jacket{width:66px;height:66px;flex:none;border-radius:12px;display:grid;place-items:center;font-family:var(--display);font-size:32px;color:#fff;
  background:linear-gradient(150deg,var(--c1),var(--c2));position:relative;overflow:hidden;text-shadow:0 2px 14px rgba(0,0,0,.25);transition:box-shadow .2s}
.jacket::before{content:"";position:absolute;inset:-30%;background:repeating-conic-gradient(from 0deg,rgba(255,255,255,.16) 0 8deg,transparent 8deg 22deg);opacity:.7}
.jacket span{position:relative}
.meta{flex:1;min-width:0}
.s-title{font-weight:900;font-size:17px;line-height:1.3;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.s-en{font-size:12px;color:var(--muted);margin-top:1px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.s-row{display:flex;align-items:center;gap:6px;margin-top:7px;flex-wrap:wrap}
.bpm{font-size:11px;font-weight:700;color:var(--muted)}
.rec{font-size:11px;font-weight:700;min-width:26px;text-align:center;padding:2px 6px;border-radius:7px;border:1px solid var(--line);color:var(--muted)}
.rec.got{color:var(--text);border-color:currentColor}
.rec.fc{color:var(--asagi)} .rec.ap{color:var(--gold)}
.reroll{position:absolute;right:10px;top:10px;font-size:12px;font-weight:700;padding:6px 10px;border-radius:10px;background:var(--surface-2);border:1px solid var(--line)}
.dock{padding-top:8px;display:flex;flex-direction:column;gap:10px}
.diff{display:grid;grid-template-columns:repeat(3,1fr);gap:5px;padding:5px;border-radius:20px;background:var(--surface);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
.diff button{padding:8px 4px 7px;border-radius:15px;font-weight:900;font-size:14px;letter-spacing:.04em;color:var(--muted);display:flex;flex-direction:column;align-items:center;line-height:1.15;transition:background .2s,color .2s}
.diff button small{font-size:11px;font-weight:700;opacity:.9;margin-top:2px}
.diff button.on{color:#fff}
.diff button.on[data-d=easy]{background:linear-gradient(135deg,#1fb9a4,#3a9ee8)}
.diff button.on[data-d=normal]{background:linear-gradient(135deg,#f59e1b,#ec5a2c)}
.diff button.on[data-d=hard]{background:linear-gradient(135deg,#e8388f,#7a45f0)}
.start{height:60px;border-radius:20px;font-family:var(--display);font-size:22px;letter-spacing:.12em;color:#fff;position:relative;overflow:hidden;
  background:linear-gradient(100deg,#ff8a2a,#ff4f7e 60%,#c24cff);box-shadow:0 10px 30px rgba(255,80,110,.32)}
.start::after{content:"";position:absolute;top:0;bottom:0;width:40%;left:-50%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.35),transparent);animation:sheen 3.2s ease-in-out infinite}
@keyframes sheen{0%,60%{left:-50%}100%{left:120%}}
.start:active{transform:scale(.985)}

/* ---------- hud ---------- */
#hud{pointer-events:none}
#btnPause{position:absolute;top:calc(env(safe-area-inset-top,0px) + 12px);right:12px;width:46px;height:46px;border-radius:14px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);color:#fff;pointer-events:auto;display:grid;place-items:center}
#btnPause svg{width:18px;height:18px}

/* ---------- result ---------- */
#result{align-items:center;justify-content:center;overflow-y:auto;padding:calc(env(safe-area-inset-top,0px) + 16px) 16px calc(env(safe-area-inset-bottom,0px) + 16px)}
.res{width:100%;max-width:430px;margin:auto;background:var(--surface);border:1px solid var(--line);border-radius:26px;padding:20px 18px 18px;
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);animation:rise .45s cubic-bezier(.2,.9,.3,1)}
@keyframes rise{from{opacity:0;transform:translateY(24px) scale(.97)}to{opacity:1;transform:none}}
.res-head{display:flex;align-items:center;gap:8px;justify-content:space-between}
.res-title{font-weight:900;font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dchip{flex:none;font-size:12px;font-weight:900;color:#fff;padding:4px 10px;border-radius:9px}
.res-main{display:flex;align-items:center;gap:16px;margin:14px 0 12px}
.rank{font-family:var(--display);font-size:86px;line-height:.9;min-width:1.2em;text-align:center;-webkit-background-clip:text;background-clip:text;color:transparent;
  animation:stamp .55s .25s cubic-bezier(.2,1.6,.4,1) both}
@keyframes stamp{from{opacity:0;transform:scale(2.2) rotate(-8deg)}to{opacity:1;transform:none}}
.r-Sp{background-image:linear-gradient(160deg,#ffe082,#ff7ac0 55%,#8ee9ff)}
.r-S{background-image:linear-gradient(160deg,#ffd66b,#ff8a3d)}
.r-A{background-image:linear-gradient(160deg,#ff7ac0,#a67bff)}
.r-B{background-image:linear-gradient(160deg,#4fe0d6,#5b9bff)}
.r-C,.r-D{background-image:linear-gradient(160deg,#a99fc6,#6e668f)}
.res-sc{min-width:0}
.lamp{font-size:13px;font-weight:900;letter-spacing:.06em;color:var(--muted)}
.lamp.fc{color:var(--asagi)} .lamp.ap{color:var(--gold)}
.score{font-family:var(--display);font-size:clamp(24px,7.4vw,36px);line-height:1.15;font-variant-numeric:tabular-nums}
.newrec{display:inline-block;margin-top:4px;font-size:11px;font-weight:900;color:#fff;background:linear-gradient(100deg,#ff8a2a,#ff4f7e);padding:3px 9px;border-radius:8px}
.res-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}
.res-grid div{background:var(--surface-2);border:1px solid var(--line);border-radius:14px;padding:8px 4px;text-align:center}
.res-grid span{display:block;font-size:10px;font-weight:900;letter-spacing:.04em}
.res-grid b{display:block;font-family:var(--display);font-weight:400;font-size:20px;margin-top:2px}
.k-p{color:var(--gold)} .k-g{color:var(--momo)} .k-o{color:var(--asagi)} .k-m{color:var(--muted)}
.res-sub{display:flex;justify-content:space-between;gap:8px;margin:12px 4px 0;font-size:12px;font-weight:700;color:var(--muted)}
.res-sub b{font-family:var(--display);font-weight:400;color:var(--text);font-size:15px;margin-left:4px}
.advice{margin-top:12px;padding:10px 12px;border-radius:14px;border:1px dashed var(--line);font-size:12.5px;line-height:1.6;display:flex;gap:10px;align-items:center}
.advice[hidden]{display:none}
.advice p{margin:0;flex:1}
.res-btns{display:grid;grid-template-columns:1fr 1.4fr;gap:8px;margin-top:14px}

/* ---------- shared ---------- */
.btn{height:50px;padding:0 16px;border-radius:15px;background:var(--surface-2);border:1px solid var(--line);font-weight:900;font-size:15px}
.btn.primary{background:linear-gradient(100deg,#ff8a2a,#ff4f7e);color:#fff;border:0}
.btn.wide{width:100%}
.btn.small{height:36px;font-size:12.5px;padding:0 12px;border-radius:11px;flex:none}
.btn.danger{color:#e5484d}
.sheet{position:absolute;inset:0;z-index:5;display:none;align-items:flex-end;justify-content:center;background:var(--scrim);pointer-events:auto}
.sheet.on{display:flex;animation:fade .2s}
.sheet.center{align-items:center}
@keyframes fade{from{opacity:0}to{opacity:1}}
.panel{width:100%;max-width:520px;max-height:88%;overflow-y:auto;background:var(--bg);border-radius:26px 26px 0 0;
  padding:16px 18px calc(env(safe-area-inset-bottom,0px) + 18px);animation:up .28s cubic-bezier(.2,.9,.3,1);touch-action:pan-y}
.sheet.center .panel{max-width:330px;margin:16px;border-radius:26px;padding:22px 18px 18px;display:flex;flex-direction:column;gap:10px}
@keyframes up{from{transform:translateY(40px);opacity:.4}to{transform:none;opacity:1}}
.ph{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
.ph h2{margin:0;font-family:var(--display);font-weight:400;font-size:22px}
.close{font-size:13px;font-weight:700;color:var(--muted);padding:8px 4px}
.pt{margin:0 0 6px;text-align:center;font-family:var(--display);font-weight:400;font-size:28px;letter-spacing:.08em}
.row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 0;border-bottom:1px solid var(--line)}
.row:last-child{border-bottom:0}
.rl b{display:block;font-size:15px}
.rl small{display:block;font-size:12px;color:var(--muted);margin-top:2px;line-height:1.5}
.stepper{display:flex;align-items:center;gap:4px;flex:none}
.stepper button{width:40px;height:40px;border-radius:12px;background:var(--surface-2);border:1px solid var(--line);font-size:20px;font-weight:700}
.stepper output{min-width:66px;text-align:center;font-family:var(--display);font-size:16px}
input[type=range]{width:140px;accent-color:var(--shu);touch-action:pan-x}
.tgl{width:52px;height:32px;flex:none;border-radius:999px;background:var(--line);position:relative;transition:background .2s}
.tgl::after{content:"";position:absolute;top:3px;left:3px;width:26px;height:26px;border-radius:50%;background:#fff;box-shadow:0 2px 6px rgba(0,0,0,.25);transition:transform .2s}
.tgl[aria-checked=true]{background:linear-gradient(100deg,#ff8a2a,#ff4f7e)}
.tgl[aria-checked=true]::after{transform:translateX(20px)}
.seg{display:flex;gap:4px;padding:3px;border-radius:12px;background:var(--surface-2);border:1px solid var(--line);flex:none}
.seg button{padding:7px 12px;border-radius:9px;font-size:13px;font-weight:700;color:var(--muted)}
.seg button.on{background:var(--text);color:var(--bg)}
.how{display:flex;flex-direction:column;gap:12px;margin:10px 0 14px}
.how-i{display:flex;gap:14px;align-items:center}
.how-i svg{width:56px;height:56px;flex:none;border-radius:14px}
.how-i b{font-family:var(--display);font-weight:400;font-size:16px;letter-spacing:.04em}
.how-i p{margin:2px 0 0;font-size:13.5px;line-height:1.6;color:var(--muted)}
.tips{margin:0 0 12px;padding-left:1.2em;font-size:13px;line-height:1.75;color:var(--text)}
kbd{font-family:var(--body);font-size:11px;font-weight:700;padding:1px 6px;border-radius:6px;border:1px solid var(--line);background:var(--surface-2);margin:0 1px}
.note{font-size:12.5px;line-height:1.7;color:var(--muted);background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:10px 12px;margin:0 0 14px}
#toast{position:absolute;left:50%;bottom:calc(env(safe-area-inset-bottom,0px) + 90px);transform:translate(-50%,20px);opacity:0;z-index:9;
  background:var(--text);color:var(--bg);font-size:13px;font-weight:700;padding:10px 16px;border-radius:12px;transition:opacity .25s,transform .25s;pointer-events:none;white-space:nowrap}
#toast.on{opacity:1;transform:translate(-50%,0)}
@media (prefers-reduced-motion: reduce){ .start::after{animation:none} .rank,.res,.panel{animation:none} }

/* ---------- HIBANA 追加分 ---------- */
.jacket img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.song .local{font-size:10px;font-weight:900;padding:2px 6px;border-radius:6px;background:var(--text);color:var(--bg)}
.empty{padding:28px 16px;text-align:center;color:var(--muted);font-size:13.5px;line-height:1.8;border:1.5px dashed var(--line);border-radius:18px}
.empty b{color:var(--text)}
a.icon-btn{text-decoration:none;color:inherit}
.diff.n2{grid-template-columns:repeat(2,1fr)} .diff.n1{grid-template-columns:1fr}
.diff button[disabled]{opacity:.35;cursor:default}
#loading{position:absolute;inset:0;z-index:8;display:none;align-items:center;justify-content:center;background:var(--scrim);pointer-events:auto}
#loading.on{display:flex}
#loading div{background:var(--bg);border-radius:18px;padding:18px 22px;font-weight:900;font-size:14px;display:flex;gap:12px;align-items:center}
#loading i{width:18px;height:18px;border-radius:50%;border:3px solid var(--line);border-top-color:var(--shu);animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.res-btns.pt{grid-template-columns:1fr 1.4fr}

.logo{flex:none}
.logo .kanji{white-space:nowrap}
@media (max-width:430px){ .logo .latin{display:none} .top-btns{gap:6px} }