:root{color-scheme:dark;--page:#101d1d;--surface:#172727;--surface2:#213634;--edge:#344946;--text:#eff7f1;--muted:#a5b8b1;--mint:#a1eacb;--mint-deep:#102f28;--danger:#f7a6a6;--warn:#ffc885;font-family:Inter,-apple-system,BlinkMacSystemFont,"Noto Sans TC",system-ui,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--page);color:var(--text);font-size:14px;line-height:1.5}button,input{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--mint);outline-offset:3px}button:disabled{cursor:not-allowed;opacity:.5}a{color:inherit}p,h1,h2{margin:0}button{touch-action:manipulation;-webkit-tap-highlight-color:transparent}small,.helper{color:var(--muted)}.shell{max-width:1110px;margin:auto;padding:0 clamp(14px,3vw,36px);padding-bottom:160px}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:16px 0 14px;border-bottom:1px solid var(--edge);gap:10px}.brand{text-decoration:none;display:flex;gap:12px;align-items:center}.brand-icon{background:var(--mint);color:#102620;font-size:24px;font-weight:800;display:grid;place-items:center;border-radius:13px;width:42px;height:42px}.brand strong{font-size:21px;letter-spacing:-.06em;display:block;line-height:1.1}.brand small{display:block;font-size:10px;letter-spacing:.13em;text-transform:uppercase}.top-actions{display:flex;align-items:center;gap:10px}.service-status{display:flex;align-items:center;gap:6px;background:#213932;padding:7px 9px;border-radius:99px;border:1px solid #39564b;color:#b8eacc;font-size:11px;white-space:nowrap}.service-status.is-error{color:var(--danger);background:#3d2727;border-color:#754447}.live-dot,.tiny-dot{display:inline-block;width:7px;height:7px;border-radius:100%;background:currentColor;vertical-align:middle}.icon-btn{border:1px solid var(--edge);background:var(--surface2);color:var(--text);border-radius:11px;padding:7px 10px;font-size:12px;min-width:41px;font-weight:700}.warning{padding:11px 14px;background:#472d29;color:#ffe3be;margin:14px 0;border-radius:12px;border:1px solid #a76e54}
.hero{padding:31px 0 24px}.eyebrow,.overline{color:var(--mint);font-size:10px;font-weight:750;letter-spacing:.15em;text-transform:uppercase}.sparkle{font-size:16px;vertical-align:middle;margin-right:5px}.hero h1{font-size:clamp(29px,4.4vw,51px);line-height:1.23;letter-spacing:-.055em;margin:10px 0}.hero h1 em{font-style:normal;color:var(--mint)}.hero p{color:var(--muted);font-size:14px;max-width:550px}.trust-row{display:flex;align-items:center;gap:7px 14px;flex-wrap:wrap;margin-top:18px;color:#b4c5bc;font-size:10px}.trust-row>span:first-child{color:var(--mint)}
.steps{display:flex;align-items:center;margin:3px 0 18px;gap:9px}.step{display:flex;align-items:center;gap:7px;color:#839b92;font-size:12px;white-space:nowrap}.step b{display:grid;place-items:center;width:25px;height:25px;border-radius:50%;background:#263734;color:#9bb4a8;font-size:11px}.step.is-current,.step.is-done{color:var(--mint)}.step.is-current b{background:var(--mint);color:var(--mint-deep)}.step.is-done b{background:#294e3f;color:var(--mint)}.step-line{height:1px;width:clamp(15px,3vw,80px);background:var(--edge)}
.columns{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(300px,.85fr);gap:18px;align-items:start}.main-pane,.side-pane{display:grid;gap:16px;min-width:0}.section-card{background:var(--surface);border:1px solid var(--edge);border-radius:21px;padding:20px;box-shadow:0 6px 30px #07110e19}.section-title{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px}.section-title h2{font-size:20px;letter-spacing:-.045em}.overline{margin-bottom:3px}.helper{font-size:11px}.product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.product{background:#1c302e;border:1px solid #3b554f;border-radius:15px;min-width:0;padding:13px;display:flex;flex-direction:column;gap:10px}.product-head{display:flex;align-items:center;gap:10px}.product-emoji{display:grid;place-items:center;background:#27423b;width:43px;height:43px;border-radius:12px;font-size:23px;flex-shrink:0}.product-name{font-size:14px;font-weight:750;line-height:1.3}.product-sku{font-size:10px;color:var(--muted)}.product-footer{display:flex;align-items:center;justify-content:space-between;gap:4px;margin-top:auto}.product-price{font-size:16px;color:var(--mint);font-weight:800;font-variant-numeric:tabular-nums}.qty-controls{display:flex;align-items:center;gap:6px}.qty-controls button{height:35px;width:35px;min-width:35px;border-radius:10px;border:1px solid #537468;background:#29493e;color:#e4fff0;font-size:19px;font-weight:600;display:grid;place-items:center}.qty-controls button.plus{background:var(--mint);color:#16342b;border-color:var(--mint)}.qty-count{font-variant-numeric:tabular-nums;font-size:13px;min-width:11px;text-align:center;font-weight:700}.product-hint{margin-top:12px}.loading-card{color:var(--muted);grid-column:1/-1}
.count-pill,.source-pill{border-radius:99px;background:#244038;color:var(--mint);padding:5px 11px;font-weight:700;font-size:11px}.cart-items{display:grid;gap:9px}.cart-row{display:flex;align-items:center;gap:9px;padding:8px 0;border-bottom:1px solid #2a3d39}.cart-row:last-child{border-bottom:0}.cart-name{min-width:0;flex:1;line-height:1.3;font-weight:600}.cart-name small{display:block;font-size:10px;font-weight:400}.cart-qty{color:#a9c7b9}.cart-price{font-weight:650;font-variant-numeric:tabular-nums}.empty-cart{border:1px dashed #436059;border-radius:13px;text-align:center;padding:22px;color:var(--muted)}.money-row{display:flex;justify-content:space-between;align-items:center;padding:15px 0;border-top:1px solid var(--edge);margin-top:14px}.grand-total{font-size:25px;color:var(--mint);letter-spacing:-.045em;font-variant-numeric:tabular-nums}.budget-head{display:flex;justify-content:space-between;align-items:center;gap:12px}.budget-head label{font-size:12px}.budget-edit{display:flex;align-items:center;gap:7px;margin-top:8px}.budget-edit>span{color:var(--muted)}.budget-edit input{width:100%;min-width:0;background:#101e1c;border:1px solid #406158;border-radius:9px;color:var(--text);height:39px;padding:8px 9px;outline:0}.budget-edit input:focus{border-color:var(--mint)}.btn{border-radius:11px;padding:11px 13px;border:1px solid transparent;font-weight:700;font-size:13px;min-height:42px}.btn-primary{background:var(--mint);color:#14352a}.btn-outline{border-color:#527367;background:#1d3530;color:var(--text)}.btn-soft{background:#29483f;color:var(--mint);border-color:#446459;white-space:nowrap}.btn-tiny{padding:7px 12px;min-height:39px}.bar{height:5px;background:#2d433e;overflow:hidden;border-radius:99px;margin-top:13px}.bar-fill{display:block;width:0;height:100%;background:var(--mint);transition:width .25s}.bar-fill.over{background:var(--danger)}.cart-hint{font-size:11px;color:var(--muted);margin-top:8px;min-height:18px}.over-text{color:var(--danger)!important}
.proposal-card{border-color:#66977f;background:#20392f}.proposal-note{color:#e3f4e8;margin:0 0 14px;font-size:14px}.compare{background:#152a23;border:1px solid #3c6b53;border-radius:12px;padding:12px;display:grid;gap:6px}.compare-row{display:flex;justify-content:space-between;gap:6px}.compare .after{color:var(--mint);font-weight:800}.compare strong{font-variant-numeric:tabular-nums}.compare-changes{border-top:1px solid #3a5b4c;padding-top:9px;font-size:11px;color:#b6d2bd}.button-pair{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:14px 0 7px}
.pay-card{border-color:#4f7467}.pay-lock{color:var(--mint);background:#26443a;padding:5px 10px;border-radius:12px}.checkout-message{font-size:12px;color:var(--muted);line-height:1.65}.checkout-actions{margin-top:14px}.checkout-actions .btn{width:100%}.locked-heading{font-weight:700;color:var(--mint);margin-bottom:7px}.lock-summary{background:#1e3630;padding:12px;border-radius:12px;margin:10px 0;border:1px solid #3a5d4f}.lock-summary strong{font-size:21px;letter-spacing:-.04em}.pay-order{color:var(--muted);font-size:10px;overflow-wrap:anywhere;margin-top:8px}.paypal-container{min-height:45px;margin-top:12px}.danger-link{display:block;margin:12px auto 0;background:none;border:none;color:#f2b6a1;text-decoration:underline;padding:7px;font-size:12px}.receipt-card{text-align:center;background:#1d4032;border:1px solid #5eac85;padding:18px 9px;border-radius:14px}.receipt-check{font-size:32px;color:var(--mint)}.receipt-card h3{margin:0 0 6px}.receipt-card code{display:block;word-break:break-all;font-size:11px;color:#c5ead8;margin-top:6px}.receipt-card .btn{margin-top:13px}.pending-text{color:var(--warn)}
.history{background:var(--surface);border:1px solid var(--edge);border-radius:16px;overflow:hidden}.history summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px}.history summary::-webkit-details-marker{display:none}.history-heading{font-weight:650;display:flex;align-items:center;gap:9px}.history-counter{border-radius:50px;background:#2e4740;color:var(--mint);font-size:11px;padding:4px 10px}.events{border-top:1px solid var(--edge);padding:0 14px 14px;max-height:300px;overflow:auto}.event{padding:10px 5px;border-bottom:1px solid #294039}.event:last-child{border-bottom:0}.event b{font-size:12px;font-weight:650}.event small{display:block;color:var(--muted);font-size:10px;margin-top:3px}
.prompt-panel{position:fixed;bottom:0;left:0;right:0;z-index:15;background:linear-gradient(180deg,#10201ef5,#111e1dfd);border-top:1px solid #486558;box-shadow:0 -14px 35px #0b1614b0;padding:11px max(15px,env(safe-area-inset-right)) max(12px,env(safe-area-inset-bottom)) max(15px,env(safe-area-inset-left))}.prompt-inner{max-width:1040px;margin:auto}.prompt-header{display:flex;align-items:center;justify-content:space-between;margin:0 0 7px;gap:12px}.prompt-header label{font-size:11px;font-weight:750;color:var(--mint)}.prompt-status{font-size:10px;color:#b7d6c6}.prompt-form{background:#0d1b19;border:1px solid #57846d;display:flex;align-items:center;border-radius:12px;gap:7px;padding:5px}.prompt-form input{flex:1;min-width:0;background:none;border:0;outline:0;color:var(--text);padding:8px;font-size:13px;height:38px}.prompt-form input::placeholder{color:#8da89e}.microphone,.send-btn{flex:0 0 38px;width:38px;height:38px;border-radius:9px;border:0;font-size:20px;display:grid;place-items:center;background:#2b4a3d;color:var(--mint)}.send-btn{background:var(--mint);color:#10372b}.microphone.is-active{background:#8c4848;color:white}.suggestions{display:flex;gap:6px;overflow:auto;padding:8px 0 0;scrollbar-width:none}.suggestions button{background:#244036;color:#cfe9da;border:1px solid #426e56;border-radius:30px;padding:5px 10px;white-space:nowrap;font-size:11px}.toast{position:fixed;z-index:30;bottom:132px;left:50%;transform:translateX(-50%);max-width:min(92vw,540px);width:max-content;background:#29483d;border:1px solid #81c8a0;color:var(--text);border-radius:12px;padding:12px 15px;font-size:13px;box-shadow:0 12px 30px #0009}.toast.is-error{border-color:#d68181;background:#50302d;color:#ffe2e0}
@media(max-width:850px){.columns{grid-template-columns:1fr}.side-pane{grid-row:1;grid-template-columns:1fr 1fr}.main-pane{grid-row:2}}@media(max-width:650px){.side-pane{grid-template-columns:1fr}.shell{padding-bottom:154px}.hero{padding:24px 0 20px}.section-card{padding:16px}.steps{margin-bottom:13px}.hero h1{font-size:32px}.product-grid{gap:9px}.product{padding:11px}.product-head{gap:7px}.product-emoji{width:37px;height:37px;font-size:19px}.product-name{font-size:12px}.product-price{font-size:14px}.qty-controls{gap:5px}.qty-controls button{width:32px;min-width:32px;height:32px}.topbar{padding:12px 0}.hero p{font-size:12px}.trust-row{gap:5px 8px}}@media(max-width:370px){.brand small{font-size:8px}.service-status{font-size:9px}.service-status .live-dot{display:none}.hero h1{font-size:28px}.product-footer{flex-wrap:wrap}.qty-controls{margin-left:auto}.steps{gap:4px}.step{font-size:10px}.step-line{width:9px}.section-title h2{font-size:18px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
/* Phone flow follows the user's real task order: pick -> review suggestion -> cart -> checkout -> audit. */
@media(max-width:850px){
 .columns{display:flex;flex-direction:column;gap:14px}
 .main-pane,.side-pane{display:contents}
 .main-pane>.section-card:first-child{order:1;width:100%}
 #proposal-section{order:2;width:100%}
 .cart-card{order:3;width:100%}
 .pay-card{order:4;width:100%}
 .history{order:5;width:100%}
}