:root{color-scheme:dark;--base:#02040a;--surface:#07111f;--blue:#8dd6ff;--gold:#ffd66b;--ink:#f7fbff;--muted:#b1bdcc;--line:#26364c;font-family:"BIZ UDPGothic","Yu Gothic UI","Meiryo UI",sans-serif;background:var(--base);color:var(--ink)}
*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at top,#112b42 0,transparent 55%)}button,input,select,textarea{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.45;cursor:default}button,a,input,select,textarea{outline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--blue)}[hidden]{display:none!important}.shell{height:100dvh;max-width:580px;margin:auto;display:grid;grid-template-rows:auto minmax(0,1fr) auto}header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:max(20px,env(safe-area-inset-top)) 24px 18px;border-bottom:1px solid var(--line)}.brand{font-size:23px;font-weight:800;letter-spacing:.08em;color:var(--ink);text-decoration:none}.brand span{color:var(--blue);font-size:14px}.trial{font-size:12px;color:var(--blue);line-height:1.7}main{min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:30px max(24px,env(safe-area-inset-right)) 24px max(24px,env(safe-area-inset-left))}h1{font-size:clamp(24px,6vw,30px);font-weight:600;line-height:1.6;margin:6px 0 12px;letter-spacing:.04em}.eyebrow{font-size:10px;letter-spacing:.23em;color:var(--blue);margin:0}.lead{font-size:14px;color:var(--muted);line-height:1.9;margin:0 0 32px}.balance{display:flex;align-items:center;justify-content:space-between;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:28px;font-size:13px;color:var(--muted)}.balance strong{color:var(--gold);font-size:28px;font-weight:600}.primary{width:100%;min-height:52px;padding:14px;border:0;border-radius:8px;background:var(--gold);color:#09111c;font-weight:700;margin:10px 0}.quiet{display:block;min-height:48px;margin:8px auto;background:transparent;color:var(--blue);border:0;padding:12px}.footnote,.hint{font-size:12px;color:var(--muted);line-height:1.85}.footnote{margin-top:28px}.notice{border-left:2px solid var(--blue);padding:2px 0 2px 18px;margin-bottom:24px}.notice h2{font-size:17px;line-height:1.8;margin:0 0 12px}.notice p{font-size:13px;line-height:1.8}.muted{color:var(--muted)}label{display:block;font-size:14px;margin:22px 0 10px;line-height:1.6}label small{font-size:11px;color:var(--muted);font-weight:normal;margin-left:8px}input:not([type=range]),select,textarea{width:100%;min-height:48px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink);padding:12px;font-size:16px}textarea{resize:vertical;min-height:98px;line-height:1.7}input[type=file]{font-size:12px}input::file-selector-button{padding:8px;border:0;border-radius:4px;margin-right:8px;background:var(--line);color:var(--ink)}fieldset{padding:0;border:0;margin:0;min-width:0}.preview{display:block;max-width:160px;height:128px;object-fit:contain;border-radius:8px;margin:16px auto;background:var(--surface)}hr{border:0;border-top:1px solid var(--line);margin:26px 0}output{float:right;color:var(--gold);font-weight:700}input[type=range]{width:100%;min-height:44px;accent-color:var(--gold)}.presets{display:flex;gap:8px}.presets button{flex:1;min-height:44px;padding:8px 0;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--ink)}.presets button[aria-pressed=true]{border-color:var(--gold);color:var(--gold)}nav{display:flex;align-items:center;justify-content:center;gap:0;padding:10px 24px max(12px,env(safe-area-inset-bottom));border-top:1px solid var(--line);background:var(--base)}nav button,nav a{min-width:100px;min-height:44px;text-align:center;display:grid;place-items:center;background:var(--surface);border:1px solid var(--line);color:var(--ink);text-decoration:none;font-size:13px}nav button{border-radius:24px 0 0 24px}nav a{border-left:0;border-radius:0 24px 24px 0}#error{padding:14px;border:1px solid #ed9b9b;border-radius:8px;color:#ffd2d2;font-size:13px;line-height:1.8}#ranking{padding:0;list-style:none;margin:24px 0}#ranking li{display:grid;grid-template-columns:24px 64px minmax(0,1fr);gap:12px;align-items:start;padding:18px 0;border-bottom:1px solid var(--line)}#ranking img{width:64px;height:64px;border-radius:8px;object-fit:cover}#ranking .rank{color:var(--gold);font-size:17px;padding-top:4px}#ranking h2{font-size:15px;line-height:1.6;margin:0 0 5px;overflow-wrap:anywhere}#ranking p{font-size:12px;color:var(--muted);line-height:1.8;margin:4px 0;overflow-wrap:anywhere}#completed-at{font-size:13px;line-height:1.8;color:var(--muted)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}