*,*::before,*::after{box-sizing:border-box}
:root{
  --orange:#F37021; --orange-dark:#D85A0F; --orange-light:#FFF4EC; --orange-tint:#FDE8D4;
  --dark:#1E293B; --dark-2:#0F172A; --slate:#475569; --muted:#94A3B8; --border:#E2E8F0;
  --bg:#F6F7FB; --card:#FFFFFF; --green:#16A34A; --red:#DC2626;
  --island:#2563EB; --kln:#DC2626; --nt:#16A34A;
  --shadow:0 8px 30px rgba(15,23,42,.07); --shadow-lg:0 20px 50px rgba(15,23,42,.12);
  --r:16px; --r-sm:10px;
}
html{scroll-behavior:smooth}
body{
  margin:0; font-family:'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans TC', sans-serif;
  background:var(--bg); color:var(--dark); line-height:1.6; font-size:15px; -webkit-font-smoothing:antialiased;
}
a{color:var(--orange-dark); text-decoration:none}
img{max-width:100%; display:block}
.wrap{max-width:1200px; margin:0 auto; padding:0 20px}

/* Header */
.site-header{position:sticky; top:0; z-index:90; background:#fff; border-bottom:1px solid var(--border); box-shadow:0 2px 10px rgba(0,0,0,.03)}
.header-row{display:flex; align-items:center; justify-content:space-between; padding:12px 20px}
.brand{display:flex; align-items:center; gap:14px}
.logo{height:44px; width:auto; border-radius:6px}
.brand-title{display:block; font-size:18px; font-weight:800; color:var(--dark-2); line-height:1.15}
.brand-sub{display:block; font-size:11px; font-weight:700; color:var(--orange); letter-spacing:.5px}
.header-actions{display:flex; gap:8px; align-items:center}
@media(max-width:768px){.brand-sub{display:none}.hotline{display:none}}

/* Buttons */
.btn{display:inline-flex; align-items:center; justify-content:center; gap:6px; padding:10px 16px; border-radius:var(--r-sm); font-size:13px; font-weight:700; border:none; cursor:pointer; transition:.15s}
.btn-primary{background:var(--orange); color:#fff}.btn-primary:hover{background:var(--orange-dark)}
.btn-outline{background:#fff; color:var(--dark); border:1px solid var(--border)}.btn-outline:hover{border-color:var(--orange); color:var(--orange)}
.btn-whatsapp{background:#25D366; color:#fff}.btn-whatsapp:hover{background:#1EBE5D}
.btn-dark{background:var(--dark-2); color:#fff}
.btn-sm{padding:7px 12px; font-size:12px}

/* Hero */
.hero{padding:26px 0 10px}
.hero-card{background:linear-gradient(135deg,#fff 0%,var(--orange-light) 100%); border:1px solid var(--orange-tint); border-radius:var(--r); padding:30px; box-shadow:var(--shadow)}
.hero-top{display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:10px; margin-bottom:12px}
.hero-badge{display:inline-flex; align-items:center; padding:6px 12px; background:var(--orange); color:#fff; font-weight:800; font-size:13px; border-radius:999px; box-shadow:0 4px 14px rgba(243,112,33,.35)}
.version-chip{font-size:12px; font-weight:700; color:var(--slate)}
.hero-title{font-size:30px; font-weight:800; color:var(--dark-2); margin:0 0 10px; line-height:1.25}
.hero-title span{color:var(--orange)}
.hero-desc{font-size:15px; color:var(--slate); margin:0 0 18px; max-width:820px}
.hero-chips{display:flex; flex-wrap:wrap; gap:8px}
.hero-chips span{font-size:12px; font-weight:600; background:#fff; border:1px solid var(--orange-tint); padding:5px 10px; border-radius:999px; color:var(--dark)}
@media(max-width:600px){.hero-title{font-size:22px}.hero-card{padding:20px}}

/* Section */
.section{padding:30px 0}
.section-alt{background:#fff}
.section-head{margin-bottom:20px}
.section-head h2{margin:0 0 4px; font-size:24px; font-weight:800; color:var(--dark-2)}
.section-head p{margin:0; color:var(--slate); font-size:14px}
.panel-kicker{display:inline-block; font-size:11px; font-weight:800; text-transform:uppercase; letter-spacing:1px; color:var(--orange); margin-bottom:4px}
.text-center{text-align:center}

/* Cards */
.card{background:var(--card); border:1px solid var(--border); border-radius:var(--r); padding:24px; box-shadow:var(--shadow)}
.muted{color:var(--muted)} .small{font-size:12px}

/* Control Panel */
.panel-card{background:linear-gradient(180deg,#fff 0%,#FFFBF7 100%); border:2px solid var(--orange-tint); border-radius:var(--r); padding:26px; box-shadow:var(--shadow-lg)}
.panel-header{display:flex; justify-content:space-between; align-items:flex-start; flex-wrap:wrap; gap:14px; margin-bottom:20px}
.panel-title{margin:0 0 6px; font-size:22px; font-weight:800; color:var(--dark-2)}
.panel-desc{margin:0; font-size:13px; color:var(--slate); max-width:760px}
.panel-desc code{background:#fff; border:1px solid var(--border); padding:1px 6px; border-radius:4px; font-size:12px}
.user-pill{display:inline-flex; align-items:center; gap:8px; padding:10px 14px; background:#fff; border:1px solid var(--orange-tint); border-radius:999px; font-size:13px; font-weight:700; color:var(--dark-2); box-shadow:0 2px 8px rgba(0,0,0,.04); white-space:nowrap}
.user-pill .dot{width:10px; height:10px; border-radius:50%; background:var(--green); animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.ctrl-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin-bottom:16px}
@media(max-width:960px){.ctrl-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.ctrl-grid{grid-template-columns:1fr}}
.ctrl label{display:block; font-size:12px; font-weight:700; color:var(--slate); margin-bottom:5px}
.ctrl select,.ctrl input{width:100%; padding:10px 12px; border:1px solid var(--border); border-radius:var(--r-sm); font-size:13px; font-family:inherit; background:#fff; color:var(--dark)}
.ctrl select:focus,.ctrl input:focus{outline:none; border-color:var(--orange)}
.input-btn{display:flex; gap:6px}
.input-btn input{flex:1}
.demo-users{display:flex; flex-wrap:wrap; align-items:center; gap:8px; padding:12px 0 16px; border-top:1px dashed var(--border)}
.demo-label{font-size:12px; font-weight:700; color:var(--slate)}
.chip-btn{font-size:12px; font-weight:600; padding:6px 10px; border:1px solid var(--border); border-radius:999px; background:#fff; cursor:pointer; font-family:inherit}
.chip-btn:hover{border-color:var(--orange); color:var(--orange)}
.url-share{display:flex; align-items:center; flex-wrap:wrap; gap:8px; font-size:12px; color:var(--slate); padding-top:8px; border-top:1px dashed var(--border)}
.url-share code{flex:1; min-width:260px; background:#fff; border:1px solid var(--border); padding:6px 10px; border-radius:6px; font-size:12px; word-break:break-all; cursor:pointer}

/* Trip Calculator */
.calc-layout{display:grid; grid-template-columns:400px 1fr; gap:20px; align-items:start}
@media(max-width:1100px){.calc-layout{grid-template-columns:1fr}}
.form-row{display:grid; gap:12px; margin-bottom:12px}
.form-row-3{grid-template-columns:1fr 1fr 1fr}
.form-row-2{grid-template-columns:1fr 1fr}
@media(max-width:520px){.form-row-3,.form-row-2{grid-template-columns:1fr}}
.form-checks{font-size:13px; display:flex; flex-direction:column; gap:4px; margin-bottom:14px}
.chk{display:inline-flex; align-items:center; gap:6px; cursor:pointer; font-weight:600}
.chk input{width:16px; height:16px; accent-color:var(--orange)}
.quote-box{background:var(--orange-light); border:2px solid var(--orange-tint); border-radius:var(--r); padding:18px; margin-top:6px}
.quote-row{display:flex; justify-content:space-between; align-items:baseline; font-size:13px; padding:5px 0}
.quote-row strong{font-size:16px}
.quote-row.highlight{border-top:1px dashed var(--orange-tint); margin-top:6px; padding-top:10px}
.quote-row.highlight strong{font-size:24px; color:var(--orange-dark)}
.save-tag{background:var(--green); color:#fff; font-size:11px; font-weight:800; padding:2px 7px; border-radius:999px}
.quote-breakdown{font-size:12px; color:var(--slate); border-top:1px dashed var(--orange-tint); margin-top:8px; padding-top:8px; line-height:1.7}
.quote-footer{display:flex; justify-content:space-between; align-items:center; margin-top:12px; font-size:12px; color:var(--slate)}
.truck-spec{margin-top:16px; font-size:12px; color:var(--slate); border-top:1px dashed var(--border); padding-top:14px; line-height:1.8}
.truck-spec strong{color:var(--dark-2)}

/* Matrix */
.matrix-card{overflow:hidden}
.matrix-card-head{display:flex; justify-content:space-between; align-items:flex-start; flex-wrap:wrap; gap:12px; margin-bottom:14px}
.matrix-card-head h3{margin:0; font-size:16px; font-weight:800}
.matrix-card-head p{margin:2px 0 0}
.matrix-legend{display:flex; gap:10px; font-size:11px; font-weight:700}
.leg::before{content:'■'; margin-right:4px}
.leg-island{color:var(--island)}.leg-kln{color:var(--kln)}.leg-nt{color:var(--nt)}
.matrix-scroll{overflow:auto; max-height:560px; border:1px solid var(--border); border-radius:var(--r-sm); background:#fff}
table.matrix{border-collapse:collapse; font-size:11px; text-align:right; font-variant-numeric:tabular-nums; white-space:nowrap; min-width:100%}
table.matrix th,table.matrix td{padding:5px 7px; border:1px solid #EEF2F6}
table.matrix thead th{position:sticky; top:0; z-index:2; background:#fff; font-weight:700; font-size:10px; text-align:center}
table.matrix thead tr:nth-child(2) th{top:24px}
table.matrix tbody th{position:sticky; left:0; z-index:1; background:#fff; text-align:left; font-size:11px; font-weight:700}
table.matrix thead th:first-child{position:sticky; left:0; z-index:3; background:#fff}
.reg-island{background:rgba(37,99,235,.10)!important; color:var(--island)}
.reg-kln{background:rgba(220,38,38,.10)!important; color:var(--kln)}
.reg-nt{background:rgba(22,163,74,.10)!important; color:var(--nt)}
.diag{background:#FFF2D6!important; font-weight:800}
.hl-row td,.hl-row th{background:#FDF5EC}
.hl-cell{background:var(--orange-tint)!important; font-weight:800; color:var(--orange-dark)}
.matrix-note{margin-top:10px}

/* Catalog */
.cat-tabs{display:flex; flex-wrap:wrap; gap:8px; margin-bottom:14px}
.cat-tab{font-size:13px; font-weight:700; padding:8px 14px; border-radius:999px; border:1px solid var(--border); background:#fff; cursor:pointer; font-family:inherit; color:var(--dark); transition:.15s}
.cat-tab:hover{border-color:var(--orange); color:var(--orange)}
.cat-tab.active{background:var(--orange); color:#fff; border-color:var(--orange); box-shadow:0 3px 12px rgba(243,112,33,.3)}
.cat-meta-bar{display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px; margin-bottom:18px}
.cat-sub{font-size:13px; color:var(--slate)}
.search-box input{padding:9px 12px; border:1px solid var(--border); border-radius:999px; font-size:13px; width:260px; font-family:inherit; background:#fff}
.search-box input:focus{outline:none; border-color:var(--orange)}
@media(max-width:600px){.search-box input{width:100%}}
.prod-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
@media(max-width:960px){.prod-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:540px){.prod-grid{grid-template-columns:1fr}}
.prod-card{background:#fff; border:1px solid var(--border); border-radius:var(--r); padding:18px; display:flex; flex-direction:column; gap:10px; transition:.15s; position:relative}
.prod-card:hover{box-shadow:var(--shadow); border-color:var(--orange-tint)}
.prod-media{height:150px; display:flex; align-items:center; justify-content:center; background:#FAFAFC; border-radius:var(--r-sm); overflow:hidden}
.prod-media img{max-height:100%; object-fit:contain}
.prod-media.full-row{grid-column:1/-1; height:auto; max-height:260px}
.prod-media.full-row img{max-height:260px; object-fit:contain}
.prod-head{display:flex; justify-content:space-between; align-items:flex-start; gap:8px}
.prod-name{margin:0; font-size:15px; font-weight:800; color:var(--dark-2); line-height:1.3}
.prod-cat-badge{font-size:10px; font-weight:800; text-transform:uppercase; color:var(--orange); letter-spacing:.5px}
.prod-specs{font-size:12px; color:var(--slate); line-height:1.7}
.prod-specs span+span::before{content:' · '}
.price-stack{margin-top:auto; background:var(--bg); border-radius:var(--r-sm); padding:10px 12px; display:flex; flex-direction:column; gap:4px}
.price-line{display:flex; justify-content:space-between; align-items:baseline; font-size:12px}
.price-orig{text-decoration:line-through; color:var(--muted); font-size:11px}
.price-adj{font-size:15px; font-weight:800; color:var(--orange-dark)}
.price-model{font-size:11px; color:var(--slate)}
.prod-foot{display:flex; justify-content:space-between; align-items:center; gap:8px}
.prod-foot .save-chip{font-size:11px; font-weight:800; color:var(--green)}
.quote-note{font-size:12px; color:var(--orange-dark); font-weight:700}

/* Rules */
.rules-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:16px}
@media(max-width:900px){.rules-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:500px){.rules-grid{grid-template-columns:1fr}}
.rule-card{background:var(--bg); border:1px solid var(--border); border-radius:var(--r); padding:20px}
.rule-icon{font-size:28px; margin-bottom:8px}
.rule-card h3{margin:0 0 6px; font-size:16px; font-weight:800}
.rule-card p{margin:0; font-size:13px; color:var(--slate)}

/* API */
.api-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
@media(max-width:960px){.api-grid{grid-template-columns:1fr}}
.api-card{position:relative}
.api-badge{position:absolute; top:18px; right:18px; font-size:10px; font-weight:800; padding:3px 8px; border-radius:999px; background:var(--orange-light); color:var(--orange-dark)}
.api-card h3{margin:0 0 6px; font-size:17px; font-weight:800}
pre{background:#0F172A; color:#E2E8F0; padding:14px; border-radius:var(--r-sm); overflow:auto; font-size:12px; margin:10px 0 0}
pre code{font-family:'DM Sans', monospace}
.playground-card{margin-top:20px}
.play-head{display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:10px; margin-bottom:14px}
.play-head h3{margin:0}
.play-grid{display:grid; grid-template-columns:1fr 1fr; gap:14px}
@media(max-width:768px){.play-grid{grid-template-columns:1fr}}
#playReq{width:100%; height:260px; font-family:monospace; font-size:12px; padding:12px; border:1px solid var(--border); border-radius:var(--r-sm); background:#FAFAFC}
#playResp{margin:0; height:260px; overflow:auto}

/* Source */
.src-btns{display:flex; flex-wrap:wrap; justify-content:center; gap:10px; margin-top:16px}

/* Footer */
.site-footer{background:#fff; border-top:1px solid var(--border); padding:24px 0 90px; font-size:13px}
.footer-row{display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:16px}
.footer-links{display:flex; flex-wrap:wrap; gap:14px}
.footer-links a{color:var(--slate)}

/* Cart */
.cart-bar{position:fixed; bottom:0; left:0; right:0; z-index:80; background:#fff; border-top:1px solid var(--border); box-shadow:0 -6px 20px rgba(0,0,0,.08); padding:10px 20px; display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:10px}
.cart-info{display:flex; align-items:baseline; gap:12px; font-size:13px}
.cart-total b{font-size:18px; color:var(--orange-dark)}
.cart-saved{font-size:11px; font-weight:800; color:var(--green)}
.cart-actions{display:flex; gap:8px}
.cart-modal{position:fixed; inset:0; z-index:100; background:rgba(15,23,42,.45); display:flex; align-items:flex-end; justify-content:center}
@media(min-width:768px){.cart-modal{align-items:center}}
.cart-dialog{background:#fff; width:100%; max-width:640px; max-height:85vh; border-radius:var(--r) var(--r) 0 0; display:flex; flex-direction:column; overflow:hidden; box-shadow:var(--shadow-lg)}
@media(min-width:768px){.cart-dialog{border-radius:var(--r)}}
.cart-modal-head{display:flex; justify-content:space-between; align-items:center; padding:18px 22px; border-bottom:1px solid var(--border)}
.cart-modal-head h3{margin:0}
.btn-close{background:none; border:none; font-size:24px; cursor:pointer; color:var(--muted)}
.cart-items{padding:14px 22px; overflow:auto; flex:1; display:flex; flex-direction:column; gap:10px}
.cart-item{display:flex; justify-content:space-between; align-items:center; gap:10px; font-size:13px; padding-bottom:10px; border-bottom:1px dashed var(--border)}
.cart-item-name{font-weight:700}
.cart-item-sub{font-size:11px; color:var(--slate)}
.cart-item-price{text-align:right}
.cart-item-price .orig{text-decoration:line-through; color:var(--muted); font-size:11px}
.cart-item-price .adj{font-weight:800; color:var(--orange-dark)}
.btn-del{background:none; border:none; color:var(--muted); cursor:pointer; font-size:16px}
.cart-empty{text-align:center; padding:30px; color:var(--muted); font-size:13px}
.cart-modal-foot{padding:18px 22px; border-top:1px solid var(--border); background:var(--bg); display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px}
.cart-modal-total .final b{font-size:20px; color:var(--orange-dark)}
.cart-modal-btns{display:flex; gap:8px}

/* Print */
@media print{.site-header,.cart-bar,.panel-card .ctrl-grid,.demo-users,.url-share,.api-grid,.playground-card{display:none}.matrix-scroll{max-height:none}}

/* Stock badges & inventory strip */
.stock-badge{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:700;padding:3px 8px;border-radius:999px;margin-bottom:6px;width:fit-content;letter-spacing:-.2px}
.stock-surplus{background:#ecfdf5;color:#047857}
.stock-normal{background:#f3f4f6;color:#374151}
.stock-tight{background:#fffbeb;color:#b45309}
.stock-scarce{background:#fef2f2;color:#b91c1c;animation:pulse 2.4s infinite}
.stock-out{background:#f3f4f6;color:#9ca3af}
.card.is-out{opacity:.72}
.card.is-out .card-foot{display:flex;flex-wrap:wrap;gap:6px}
.inv-strip{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px;font-size:12px;color:var(--muted);align-items:center}
.inv-chip{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-weight:700;font-size:12px}
.inv-chip i{width:8px;height:8px;border-radius:50%;display:inline-block}
.inv-chip.surplus i{background:#10b981}.inv-chip.tight i{background:#f59e0b}.inv-chip.scarce i{background:#ef4444}.inv-chip.out i{background:#9ca3af}
.ctrl-checks{display:flex;flex-wrap:wrap;gap:12px;margin-top:4px}
.ctrl-check{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;cursor:pointer;color:var(--dark-2)}
.ctrl-check input{accent-color:var(--orange)}
.demo-tag{font-size:11px;color:var(--muted);margin-left:6px}