:root{--brand:#3869EA;--brand-deep:#21409F;--brand-light:#EEF3FE;--price:#B8481F;--price-accent:#FF6B35;--ink:#1F2A44;--ink-2:#6B7688;--ink-3:#8593A8;--canvas:#FAFAF6;--surface:#FFFFFF;--line:#E3EAFB;--ok:#12813B;--ok-bg:#E8F7EE;--warn:#92400E;--warn-bg:#FEF5E6;--wechat:#07C160;--radius-card:14px;--radius-chip:8px;--radius-sheet:24px;--shadow-sheet:0 -8px 32px rgba(31,42,68,0.12);--num:"SF Mono","Menlo",ui-monospace,monospace}*{box-sizing:border-box}body,html{margin:0;padding:0}body{background:var(--canvas);color:var(--ink);font-family:PingFang SC,Microsoft YaHei,system-ui,-apple-system,sans-serif;font-size:14px;line-height:1.6}a{color:var(--brand);text-decoration:none}a:focus-visible,button:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}button{font-family:inherit;cursor:pointer;border:none;background:none}input,select,textarea{font-family:inherit;font-size:14px;color:var(--ink)}.num{font-family:var(--num);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.price{color:var(--price);font-weight:700}.pc-topinfo{background:var(--surface);font-size:12px;color:var(--ink-2)}.pc-topinfo-inner{max-width:1240px;margin:0 auto;padding:7px 20px;display:flex;justify-content:space-between}.pc-header{background:var(--surface);border-bottom:1px solid var(--line);position:-webkit-sticky;position:sticky;top:0;z-index:30}.pc-header-inner{max-width:1240px;margin:0 auto;padding:0 20px;height:72px;display:flex;align-items:center;gap:28px}.pc-logo{font-size:20px;font-weight:700;color:var(--brand);white-space:nowrap}.pc-nav{display:flex;gap:22px;font-size:14px}.pc-nav a{color:var(--ink);font-weight:500}.pc-nav a.active,.pc-nav a:hover{color:var(--brand)}.pc-search{flex:1 1;max-width:420px;display:flex}.pc-search input{flex:1 1;border:1px solid var(--line);border-right:none;border-radius:20px 0 0 20px;padding:9px 16px;background:#fff;min-width:0}.pc-search button{border-radius:0 20px 20px 0;background:var(--brand);color:#fff;padding:0 18px;font-size:14px}.pc-actions{display:flex;gap:18px;font-size:14px;margin-left:auto}.pc-main{max-width:1240px;margin:0 auto;padding:24px 20px 64px}.pc-footer{background:var(--surface);border-top:1px solid var(--line);padding:20px 0 28px;text-align:center;color:var(--ink-3);font-size:12px}.pc-footer .links{color:var(--ink-2);margin-top:6px}.pc-footer .links a{color:var(--ink-2);margin:0 8px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border-radius:24px;font-size:14px;font-weight:500;padding:0 22px;height:44px;transition:opacity .15s}.btn:disabled{cursor:not-allowed;opacity:.5}.btn-primary{background:var(--brand);color:#fff}.btn-primary:hover:not(:disabled){background:var(--brand-deep)}.btn-ghost{border:1px solid var(--brand);color:var(--brand);background:#fff}.btn-ghost:hover:not(:disabled){background:var(--brand-light)}.btn-plain{border:1px solid var(--line);color:var(--ink-2);background:#fff}.btn-sm{height:32px;padding:0 14px;font-size:13px}.btn-block{width:100%}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card)}.spec-group{margin-bottom:14px}.spec-label{font-size:13px;color:var(--ink-2);margin-bottom:8px;display:flex;justify-content:space-between;align-items:baseline;gap:8px}.spec-label .hint{font-size:12px;color:var(--ink-3);font-weight:400}.chips{display:flex;flex-wrap:wrap;gap:8px}.chip{border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:var(--radius-chip);min-height:36px;padding:4px 14px;font-size:14px;display:inline-flex;align-items:center;position:relative}.chip .hot{min-height:44px}button.chip{cursor:pointer}button.chip.selected,button.chip:hover:not(:disabled){border-color:var(--brand)}button.chip.selected{background:var(--brand-light);color:var(--brand-deep);font-weight:500}button.chip:disabled{background:#F2F4F7;color:var(--ink-3);cursor:not-allowed;text-decoration:line-through}button.chip.soldout,button.chip:disabled.selected{text-decoration:none}button.chip.soldout{background:#fff;color:var(--ink-3);border-style:dashed}.chip-fixed{font-weight:500;border-color:var(--brand-light);cursor:default}.chip-fixed,.convert-card{background:var(--brand-light);color:var(--brand-deep)}.convert-card{border-radius:var(--radius-card);padding:12px 16px;font-size:13px}.convert-card .row{display:flex;gap:8px}.convert-card .warn{color:var(--ink-2);font-size:12px;margin-top:4px}.badge{display:inline-flex;align-items:center;border-radius:6px;font-size:12px;padding:2px 10px;font-weight:500;white-space:nowrap}.badge-warn{background:var(--warn-bg);color:var(--warn)}.badge-ok{background:var(--ok-bg);color:var(--ok)}.badge-muted{background:#F2F4F7;color:var(--ink-2)}.badge-brand{background:var(--brand-light);color:var(--brand-deep)}.badge-aftersale{background:#FDF0F7;color:#9D2463}.field{margin-bottom:14px}.field label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:6px}.field input[type=tel],.field input[type=text],.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:#fff}.field .err{color:var(--price);font-size:12px;margin-top:4px}.notice{border-radius:10px;padding:10px 14px;font-size:13px;margin:12px 0}.notice-warn{background:var(--warn-bg);color:var(--warn)}.notice-info{background:var(--brand-light);color:var(--brand-deep)}.notice-error{background:#FDEDEA;color:var(--price)}.notice-ok{background:var(--ok-bg);color:var(--ok)}.h5-page{max-width:480px;margin:0 auto;min-height:100vh;background:var(--canvas);position:relative;padding-bottom:calc(56px + env(safe-area-inset-bottom))}.h5-topbar{position:-webkit-sticky;position:sticky;top:0;z-index:30;height:48px;background:var(--surface);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:600}.h5-body{padding:12px 16px 24px}.h5-tabbar{position:fixed;bottom:0;left:0;right:0;max-width:480px;margin:0 auto;background:var(--surface);border-top:1px solid var(--line);display:flex;padding-bottom:env(safe-area-inset-bottom);z-index:40}.h5-tab{flex:1 1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:7px 0 5px;font-size:12px;color:var(--ink-2);min-height:48px}.h5-tab .ico{font-size:18px;line-height:1}.h5-tab.active{color:var(--brand);font-weight:500}.h5-actionbar{position:fixed;bottom:0;left:0;right:0;max-width:480px;margin:0 auto;background:var(--surface);border-top:1px solid var(--line);padding:8px 16px calc(8px + env(safe-area-inset-bottom));display:flex;align-items:center;gap:12px;z-index:45}.h5-sheet-mask{position:fixed;inset:0;background:rgba(31,42,68,.45);z-index:60;display:flex;align-items:flex-end}.h5-sheet{background:var(--surface);width:100%;max-width:480px;margin:0 auto;border-radius:var(--radius-sheet) var(--radius-sheet) 0 0;padding:16px 16px calc(16px + env(safe-area-inset-bottom));max-height:86vh;overflow-y:auto;box-shadow:var(--shadow-sheet)}.h5-sheet-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.h5-sheet-title{font-size:16px;font-weight:600}.grid-cards{display:grid;grid-template-columns:1fr 1fr;grid-gap:12px;gap:12px}.pc-grid-cards{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:16px;gap:16px}.pcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);flex-direction:column}.pcard,.pcard .imgbox{overflow:hidden;display:flex}.pcard .imgbox{position:relative;aspect-ratio:1;background:var(--brand-light);align-items:center;justify-content:center}.pcard .imgbox img{width:100%;height:100%;object-fit:cover;display:block}.pcard .fallback{font-size:40px;font-weight:700;color:var(--brand);opacity:.5}.pcard .info{padding:10px 12px 12px;display:flex;flex-direction:column;gap:4px;flex:1 1}.pcard .name{font-size:14px;font-weight:600;line-height:1.4}.pcard .sub{font-size:12px;color:var(--ink-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.pcard .pricebar{display:flex;align-items:baseline;justify-content:space-between;margin-top:auto;gap:8px}.pcard .unit{font-size:12px;color:var(--ink-3);font-weight:400}.add-btn{width:30px;height:30px;border-radius:50%;background:var(--brand);color:#fff;font-size:18px;line-height:1;display:inline-flex;align-items:center;justify-content:center;flex:none}.add-btn:hover{background:var(--brand-deep)}.stepper{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff}.stepper button{width:34px;height:34px;font-size:16px;color:var(--ink)}.stepper button:disabled{color:var(--ink-3);cursor:not-allowed}.stepper .val{min-width:44px;text-align:center;font-family:var(--num)}.cartline{display:flex;gap:12px;padding:14px;align-items:flex-start}.cartline.disabled{background:#FAFAF6}.cartline .thumb{width:76px;height:76px;border-radius:10px;flex:none;background:var(--brand-light);display:flex;align-items:center;justify-content:center;color:var(--brand);font-size:22px;font-weight:700;overflow:hidden}.cartline .thumb img{width:100%;height:100%;object-fit:cover}.ordercard{padding:14px 16px;margin-bottom:12px}.ordercard .head{font-size:13px;color:var(--ink-2);margin-bottom:8px}.ordercard .foot,.ordercard .head{display:flex;justify-content:space-between;align-items:center;gap:8px}.ordercard .foot{margin-top:10px;flex-wrap:wrap}.empty{text-align:center;color:var(--ink-2);padding:48px 16px}.empty .act{margin-top:12px}.skeleton{background:linear-gradient(90deg,#F2F4F7 25%,#E9EDF3 37%,#F2F4F7 63%);background-size:400% 100%;animation:sk 1.2s ease infinite;border-radius:8px}@keyframes sk{0%{background-position:100% 50%}to{background-position:0 50%}}@media (prefers-reduced-motion:reduce){.skeleton{animation:none}.btn{transition:none}}.entity-bar,.moq-note{font-size:12px;color:var(--ink-3)}