:root{--bg:#f5f5f7;--bg-elevated:#ffffff;--card:#ffffff;--fg:#1d1d1f;--fg-soft:#424245;--muted:#86868b;--accent:#06c755;--accent-strong:#04a548;--accent-fg:#ffffff;--accent-soft:rgba(6,199,85,0.1);--border:rgba(0,0,0,0.08);--border-strong:rgba(0,0,0,0.14);--danger:#ff3b30;--danger-soft:rgba(255,59,48,0.1);--warn:#ff9500;--field:#f5f5f7;--shadow-sm:0 1px 2px rgba(0,0,0,0.04),0 1px 3px rgba(0,0,0,0.06);--shadow-md:0 4px 16px rgba(0,0,0,0.06),0 1px 4px rgba(0,0,0,0.04);--shadow-lg:0 12px 40px rgba(0,0,0,0.1);--radius:20px;--radius-sm:14px;--radius-lg:28px;--font:-apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","Segoe UI","Noto Sans Thai","Helvetica Neue",Roboto,sans-serif}@media (prefers-color-scheme:dark){:root{--bg:#000000;--bg-elevated:#1c1c1e;--card:#1c1c1e;--fg:#f5f5f7;--fg-soft:#d1d1d6;--muted:#8e8e93;--accent:#30d158;--accent-strong:#28b84c;--accent-fg:#ffffff;--accent-soft:rgba(48,209,88,0.16);--border:rgba(255,255,255,0.1);--border-strong:rgba(255,255,255,0.18);--danger:#ff453a;--danger-soft:rgba(255,69,58,0.18);--field:#2c2c2e;--shadow-sm:0 1px 3px rgba(0,0,0,0.4);--shadow-md:0 4px 20px rgba(0,0,0,0.5);--shadow-lg:0 12px 44px rgba(0,0,0,0.6)}}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:var(--font);font-size:16px;line-height:1.5;letter-spacing:-.01em;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}h1,h2,h3,h4{letter-spacing:-.022em;font-weight:700;margin:0 0 4px}h1{font-size:28px}h2{font-size:24px}h3{font-size:19px}h4{font-size:16px}p{margin:0 0 8px}a{color:var(--accent);text-decoration:none;font-weight:500}a:hover{text-decoration:underline}.container{max-width:460px;margin:0 auto;padding:20px 16px 48px}.container-wide{max-width:1120px;margin:0 auto;padding:28px 20px 64px}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:14px;box-shadow:var(--shadow-sm)}.card-flat{box-shadow:none}.hero{position:relative;overflow:hidden;border:none;border-radius:var(--radius-lg);padding:28px 24px;color:#fff;background:linear-gradient(135deg,#06c755,#04a548 55%,#00875a);box-shadow:0 16px 40px rgba(6,199,85,.32)}.hero:after{content:"";position:absolute;top:-60px;right:-40px;width:200px;height:200px;border-radius:50%;background:rgba(255,255,255,.14)}.hero *{position:relative;z-index:1}.hero .points{color:#fff}.hero .muted{color:rgba(255,255,255,.82)}.points{font-size:52px;font-weight:800;line-height:1.05;letter-spacing:-.04em;color:var(--accent)}.points-unit{font-size:18px;font-weight:600;margin-left:4px;opacity:.85}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--accent);color:var(--accent-fg);border:none;border-radius:980px;padding:13px 22px;font-family:inherit;font-size:16px;font-weight:600;letter-spacing:-.01em;cursor:pointer;width:100%;transition:transform .12s ease,box-shadow .2s ease,background .2s ease,opacity .2s ease;-webkit-tap-highlight-color:transparent}.btn:hover{background:var(--accent-strong);box-shadow:0 6px 18px rgba(6,199,85,.3)}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.4;cursor:not-allowed;box-shadow:none;transform:none}.btn-secondary{background:var(--field);color:var(--fg)}.btn-secondary:hover{background:var(--border);box-shadow:none}.btn-danger,.btn-danger:hover{background:var(--danger)}.btn-danger:hover{opacity:.88;box-shadow:0 6px 18px rgba(255,59,48,.3)}.btn-sm{padding:8px 16px;font-size:14px;width:auto}.btn-pill-light{background:rgba(255,255,255,.22);color:#fff;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.btn-pill-light:hover{background:rgba(255,255,255,.3);box-shadow:none}.input,select.input{width:100%;background:var(--field);color:var(--fg);border:1px solid transparent;border-radius:var(--radius-sm);padding:14px 16px;font-family:inherit;font-size:16px;margin-bottom:12px;transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;-webkit-appearance:none;-moz-appearance:none;appearance:none}.input::placeholder{color:var(--muted)}.input:focus,select.input:focus{outline:none;border-color:var(--accent);background:var(--bg-elevated);box-shadow:0 0 0 4px var(--accent-soft)}select.input{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2386868b' d='M6 8 0 0h12z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;padding-right:40px}label.field-label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin:4px 0 6px}.segmented{display:flex;flex-wrap:wrap;gap:2px;background:var(--field);border-radius:14px;padding:3px;margin-bottom:16px;scrollbar-width:none}.segmented::-webkit-scrollbar{display:none}.segmented button{flex:1 1 auto;border:none;background:transparent;color:var(--fg-soft);font-family:inherit;font-size:14px;font-weight:600;padding:9px 14px;border-radius:11px;cursor:pointer;white-space:nowrap;transition:background .18s ease,color .18s ease,box-shadow .18s ease}.segmented button.active{background:var(--bg-elevated);color:var(--fg);box-shadow:var(--shadow-sm)}.muted{color:var(--muted);font-size:14px}.row{justify-content:space-between;align-items:center;gap:12px}.row,.stack{display:flex}.stack{flex-direction:column;gap:4px}.badge{display:inline-flex;align-items:center;gap:4px;padding:5px 12px;border-radius:999px;background:var(--accent-soft);color:var(--accent-strong);font-size:13px;font-weight:600}.badge-grey{background:var(--field);color:var(--muted)}.badge-warn{background:rgba(255,149,0,.14);color:var(--warn)}.divider{height:1px;background:var(--border);margin:14px 0;border:none}.item{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--border)}.item:last-child{border-bottom:none}.item:first-child{padding-top:4px}.code-display{margin-top:14px;padding:18px;text-align:center;background:var(--field);border:1px dashed var(--border-strong);border-radius:var(--radius-sm);font-size:30px;font-weight:800;letter-spacing:8px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}table{width:100%;border-collapse:collapse}td,th{text-align:left;padding:12px 10px;border-bottom:1px solid var(--border);font-size:14px}th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.03em}tr:last-child td{border-bottom:none}.alert-error{color:var(--danger);font-weight:500}.alert-error,.alert-ok{font-size:14px;margin:4px 0}.alert-ok{color:var(--accent-strong);font-weight:600}.center-screen{min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:20px}.fade-in{animation:fadeIn .4s ease both}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}