:root{color-scheme:light dark;--bg:#f5f5f4;--fg:#171717;--muted:#6b6b6b;--card:#ffffff;--surface:#fbfbfa;--surface-active:#f0f0ee;--line:#e2e2e0;--line-strong:#cfcfcb;--accent:#171717;--accent-fg:#ffffff;--green:#007a33;--green-fg:#ffffff;--amber:#ffb100;--amber-fg:#1a1400;--red:#c22026;--red-fg:#ffffff;--focus:#2563eb}@media (prefers-color-scheme:dark){:root{--bg:#121212;--fg:#f2f2f0;--muted:#9a9a98;--card:#1d1d1c;--surface:#242423;--surface-active:#2e2e2c;--line:#383836;--line-strong:#4a4a47;--accent:#f2f2f0;--accent-fg:#121212;--green:#00933e;--amber:#ffb100;--red:#d3282f}}*{box-sizing:border-box;margin:0;padding:0}body,html{height:100%}body,html{background:var(--bg)}body{color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.4}button{background:none;border:none;cursor:pointer;-webkit-tap-highlight-color:transparent}button,input{font:inherit;color:inherit}:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.money{font-feature-settings:"tnum";font-variant-numeric:tabular-nums;letter-spacing:-.02em;font-weight:700}.shell{max-width:640px;margin:0 auto;min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;padding:calc(16px + env(safe-area-inset-top)) calc(16px + env(safe-area-inset-right)) calc(16px + env(safe-area-inset-bottom)) calc(16px + env(safe-area-inset-left));gap:16px}.topbar{display:flex;align-items:center;justify-content:space-between;min-height:44px}.topbar h1{font-size:17px;font-weight:600}.topbar .sub{color:var(--muted);font-size:13px}.btn-ghost{color:var(--muted);font-size:15px;padding:8px 12px;border-radius:8px}.btn-ghost:active{background:var(--line)}.btn{display:flex;align-items:center;justify-content:center;width:100%;min-height:56px;border-radius:12px;font-size:18px;font-weight:600;background:var(--accent);color:var(--accent-fg)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-secondary{background:var(--card);color:var(--fg);border:1px solid var(--line)}.btn-onstate{background:rgb(255 255 255/.22);color:inherit;border:2px solid}.product-hero{position:relative;display:flex;align-items:center;gap:14px;width:100%;min-height:88px;padding:18px 20px 18px 22px;border-radius:12px;background:var(--surface);color:var(--fg);border:1px solid var(--line-strong);text-align:left;overflow:hidden;transition:background-color 80ms linear,transform 80ms ease-out}.product-hero:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent)}.product-hero:active{background:var(--surface-active);transform:scale(.985)}.product-hero .hero-main{display:flex;flex-direction:column;gap:3px;min-width:0;flex:1 1}.product-hero .hero-title{font-size:28px;font-weight:600;line-height:1.2;letter-spacing:-.01em}.product-hero .hero-sub{font-size:14px;color:var(--muted)}.product-hero .hero-amount{font-size:24px;font-weight:600;white-space:nowrap}.row-chevron{flex:none;color:var(--muted)}.product-hero .row-chevron{color:var(--accent)}.product-list{display:flex;flex-direction:column;gap:10px}.product-row{display:flex;align-items:center;gap:12px;width:100%;min-height:72px;padding:16px 18px;border-radius:12px;background:var(--card);border:1px solid var(--line);text-align:left;transition:background-color 80ms linear,transform 80ms ease-out}.product-row:active{background:var(--surface-active);transform:scale(.99)}.product-row .title{flex:1 1;min-width:0;font-size:17px;font-weight:600}.product-row .amount{font-size:24px;white-space:nowrap}.scan-stage{position:relative;width:100%;aspect-ratio:4/3;max-height:46dvh;border-radius:16px;overflow:hidden;background:var(--surface);color:var(--fg)}.scan-stage video{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);min-width:100%;min-height:100%;width:auto;height:auto;object-fit:cover;background:var(--surface);opacity:0;transition:opacity .1s linear}.scan-stage video.is-ready{opacity:1}@media (prefers-reduced-motion:reduce){.scan-stage video{transition:none}}.scan-stage .stage-hint{position:absolute;inset:auto 0 0 0;padding:10px 16px;font-size:14px;text-align:center;color:#fff;background:rgb(0 0 0/.55)}.scan-stage .stage-off{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:24px;text-align:center;color:var(--muted);font-size:15px}.scan-input{width:100%;min-height:60px;padding:0 18px;font-size:22px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;border-radius:12px;border:2px solid var(--line);background:var(--card)}.scan-input:focus{border-color:var(--focus);outline:none}.field-hint{color:var(--muted);font-size:14px}.alert{padding:14px 16px;border-radius:12px;font-size:15px;font-weight:600}.alert-amber{background:var(--amber);color:var(--amber-fg)}.alert-red{background:var(--red);color:var(--red-fg)}html[data-payment-state=paid],html[data-payment-state=paid] body{background:var(--green)}html[data-payment-state=waiting],html[data-payment-state=waiting] body{background:var(--amber)}html[data-payment-state=failed],html[data-payment-state=failed] body{background:var(--red)}.state-screen{position:fixed;inset:0;z-index:50;height:100vh;height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:max(32px,env(safe-area-inset-top)) max(24px,env(safe-area-inset-right)) max(32px,env(safe-area-inset-bottom)) max(24px,env(safe-area-inset-left));text-align:center}.state-green{background:var(--green);color:var(--green-fg)}.state-amber{background:var(--amber);color:var(--amber-fg)}.state-red{background:var(--red);color:var(--red-fg)}.state-neutral{background:var(--bg);color:var(--fg)}.state-screen .state-label{font-size:22px;font-weight:700}.state-screen .state-amount{font-size:clamp(56px,18vw,112px);line-height:1.05}.state-screen .state-detail{font-size:17px;opacity:.9;max-width:32ch}.state-screen .state-countdown{font-size:40px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;font-weight:700}.state-screen .state-actions{display:flex;flex-direction:column;gap:10px;width:min(320px,100%);margin-top:24px}.login-card{display:flex;flex-direction:column;gap:16px;margin:auto 0}.login-card h1{font-size:28px;font-weight:700}.login-card p{color:var(--muted);font-size:15px}.load-slot{min-height:96px}.load-slot-lg{min-height:200px}.load-text{padding:12px 0;text-align:center;color:var(--muted);font-size:14px}.tabs{display:flex;gap:6px;padding:4px;border-radius:14px;background:var(--line)}.tabs button{flex:1 1;min-height:48px;border-radius:10px;font-size:17px;font-weight:600;color:var(--muted)}.tabs button[aria-selected=true]{background:var(--card);color:var(--fg)}.search-bar{display:flex;gap:8px}.search-bar .text-input{flex:1 1;min-width:0}.btn-scan{flex:none;min-height:48px;padding:0 20px;border-radius:12px;font-size:16px;font-weight:600;background:var(--card);border:1px solid var(--line)}.section-head{display:flex;align-items:center;justify-content:space-between;font-size:15px;font-weight:600;color:var(--muted);margin-top:4px}.scan-stage-sm{aspect-ratio:3/2;max-height:34dvh}.record-list{display:flex;flex-direction:column;gap:8px}.record-row{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;padding:14px 16px;border-radius:12px;background:var(--card);border:1px solid var(--line);text-align:left}.record-row .rec-main{display:flex;flex-direction:column;gap:2px;min-width:0}.record-row .rec-amount{font-size:26px}.record-row .rec-meta{color:var(--muted);font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.badge{flex:none;font-size:13px;font-weight:600;padding:5px 10px;border-radius:999px;white-space:nowrap}.badge-green{background:var(--green);color:var(--green-fg)}.badge-amber{background:var(--amber);color:var(--amber-fg)}.badge-gray{background:var(--line);color:var(--muted)}.detail-card{display:flex;flex-direction:column;gap:14px;padding:20px;border-radius:16px;background:var(--card);border:1px solid var(--line)}.detail-amount{font-size:clamp(40px,12vw,64px);line-height:1.1}.detail-row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;font-size:15px}.detail-row dt{color:var(--muted);flex:none}.detail-row dd{text-align:right;word-break:break-all;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.btn-danger{background:var(--card);color:var(--red);border:2px solid var(--red)}.modal-backdrop{position:fixed;inset:0;z-index:60;display:flex;align-items:flex-end;justify-content:center;padding:16px;background:rgb(0 0 0/.5)}@media (min-width:520px){.modal-backdrop{align-items:center}}.modal{width:min(480px,100%);max-height:90dvh;overflow-y:auto;display:flex;flex-direction:column;gap:14px;padding:20px;border-radius:16px;background:var(--bg);border:1px solid var(--line)}.modal h2{font-size:20px;font-weight:700}.modal p{font-size:15px;color:var(--muted)}.reason-chips{display:flex;flex-wrap:wrap;gap:8px}.chip{padding:10px 14px;border-radius:999px;border:1px solid var(--line);background:var(--card);font-size:15px}.chip[aria-pressed=true]{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}.text-input{width:100%;min-height:48px;padding:12px 14px;font-size:16px;border-radius:12px;border:2px solid var(--line);background:var(--card)}.text-input:focus{border-color:var(--focus);outline:none}.seg{display:flex;gap:8px}.seg button{flex:1 1;min-height:48px;border-radius:12px;border:1px solid var(--line);background:var(--card);font-size:15px;font-weight:600}.seg button[aria-pressed=true]{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}.amount-display{font-size:clamp(48px,14vw,88px);line-height:1.1;text-align:center;padding:12px 0 4px}.amount-display.is-empty,.amount-sub{color:var(--muted)}.amount-sub{text-align:center;font-size:15px;min-height:1.4em}.keypad{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:10px;gap:10px}.key{min-height:68px;border-radius:10px;background:var(--card);border:1px solid var(--line);font-size:28px;font-weight:500;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;touch-action:manipulation;-moz-user-select:none;user-select:none;-webkit-user-select:none;transition:background-color 60ms linear}.key:active{background:var(--accent);color:var(--accent-fg)}.stepper{display:flex;align-items:center;justify-content:center;gap:14px}.step-btn{width:76px;height:76px;border-radius:16px;background:var(--card);border:1px solid var(--line);font-size:34px;font-weight:700;touch-action:manipulation;-moz-user-select:none;user-select:none;-webkit-user-select:none}.step-btn:active{background:var(--line)}.step-btn:disabled{opacity:.35}.qty-input{width:104px;min-height:76px;text-align:center;font-size:34px;font-weight:700;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;border-radius:12px;border:2px solid var(--line);background:var(--card)}.qty-input:focus{border-color:var(--focus);outline:none}.empty-state{display:flex;flex-direction:column;align-items:center;gap:6px;padding:40px 16px;text-align:center}.empty-state .empty-title{font-size:17px;font-weight:600;color:var(--fg)}.empty-state .empty-hint{font-size:14px;color:var(--muted)}