:root{color-scheme:light;--bg:#f4f8fc;--surface:#fff;--soft:#edf4f8;--ink:#17394e;--muted:#577184;--accent:#007d83;--accent-soft:#e8f5f4;--line:#cddde7;--warm:#925719;--warn-bg:#fff5e4;--danger:#b23b34;--shadow:0 12px 36px #183d5710;--focus:#236ab9;font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,select,input{font:inherit;color:inherit}button,summary,select{cursor:pointer}button{border:0;background:none}button:disabled{cursor:wait;opacity:.5}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--focus);outline-offset:3px}button,select,input{min-height:44px}button{transition:background .16s,border-color .16s,box-shadow .16s}button:hover{filter:brightness(.98)}[hidden]{display:none!important}h1,h2,h3,p{margin:0}h1{font-size:36px;letter-spacing:-1px;line-height:1.25}h2{font-size:24px}h3{font-size:20px}p{line-height:1.65}small{font-size:14px}.topbar{height:88px;padding:0 max(28px,calc((100vw - 1560px)/2));display:flex;align-items:center;justify-content:space-between;background:var(--surface);border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;align-items:center}.brand-symbol{width:43px;height:43px;display:grid;place-items:center;border-radius:13px 4px 13px 4px;background:var(--accent);color:white;font-size:25px;font-weight:700}.brand strong{font-size:22px;letter-spacing:2px}.brand small{display:block;color:var(--muted);font-size:12px;margin-top:3px}.header-right{display:flex;align-items:center;gap:20px}.local-label{color:var(--muted);font-size:15px}.icon-button{font-size:15px;padding:8px 13px;border:1px solid var(--line);border-radius:8px}main{max-width:1616px;margin:auto;padding:32px 28px 0}.page-heading{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:28px}.page-heading p{font-size:17px;color:var(--muted);margin-top:10px}.machine-choice{display:flex;padding:5px;background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:0 3px 12px #17394e05}.machine-choice button{text-align:left;padding:12px 24px;border-radius:10px;border:1px solid transparent;min-width:195px}.machine-choice strong{font-size:18px;display:block}.machine-choice span{font-size:14px;display:block;color:var(--muted);margin-top:4px}.machine-choice button[aria-pressed=true]{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}.workbench{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(460px,1fr);gap:24px;align-items:start}.machine-column{border:1px solid var(--line);border-radius:22px;background:var(--surface);overflow:hidden;box-shadow:var(--shadow);position:sticky;top:18px}.machine-heading{display:flex;justify-content:space-between;align-items:center;padding:24px 25px 12px;gap:12px}.machine-heading>div{display:flex;align-items:center;gap:15px}.machine-heading h2{font-size:20px}.machine-heading>span{font-size:14px;color:var(--muted)}.h3c{font-size:27px;font-weight:800;color:#ce1731;font-family:Arial,sans-serif;letter-spacing:-1px}.viewer-wrap{position:relative;height:500px;background:linear-gradient(180deg,#fdf9ff,#f6f4fa 45%,#e7e8ed)}iframe{width:100%;height:100%;border:0;display:block}.viewer-loading{position:absolute;top:20px;left:20px;padding:10px 16px;font-size:16px;border-radius:10px;background:#ffffffec;pointer-events:none}.machine-numbers{display:grid;grid-template-columns:repeat(3,1fr);padding:22px 25px 18px;gap:18px}.machine-numbers>div+div{border-left:1px solid var(--line);padding-left:24px}.machine-numbers span{font-size:14px;color:var(--muted);display:block}.machine-numbers strong{font-size:25px;line-height:1.5;display:block;font-variant-numeric:tabular-nums}.machine-numbers strong small{font-size:15px;font-weight:400}.scene-note{padding:0 25px 19px;font-size:13px;color:var(--muted)}.scene-note button{padding:0 3px;min-height:30px;text-decoration:underline;font-size:13px;color:var(--accent)}.task-panel{background:var(--surface);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);overflow:hidden}.task-tabs{display:flex;gap:26px;padding:0 26px;border-bottom:1px solid var(--line)}.task-tabs button{height:73px;font-size:22px;color:var(--muted);padding:0;position:relative}.task-tabs button[aria-selected=true]{font-weight:700;color:var(--ink)}.task-tabs button[aria-selected=true]:after{content:"";position:absolute;bottom:-1px;left:0;right:0;height:4px;background:var(--accent);border-radius:3px 3px 0 0}.part-nav{display:grid;grid-template-columns:repeat(6,1fr);gap:4px;padding:20px 22px 0}.part-nav button{font-size:16px;min-height:44px;border-radius:8px;color:var(--muted)}.part-nav button[aria-current=step]{background:var(--accent-soft);font-weight:700;color:var(--accent)}.controls{padding:26px}.control-heading{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:19px}.control-heading h3{font-size:22px}.control-heading span{font-size:15px;color:var(--muted)}.option-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.option-button{min-height:66px;text-align:left;padding:13px 16px;border:1px solid var(--line);border-radius:11px;position:relative;display:flex;flex-direction:column;justify-content:center;background:var(--surface)}.option-button strong{font-size:17px;font-weight:600;line-height:1.3;padding-right:16px;overflow-wrap:anywhere}.option-button small{color:var(--muted);font-size:14px;margin-top:4px}.option-button[aria-pressed=true]{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent);background:var(--accent-soft)}.option-button[aria-pressed=true]:after{content:"✓";position:absolute;right:12px;top:13px;color:var(--accent);font-weight:700;font-size:16px}.quantity-label{display:flex;justify-content:space-between;align-items:center;font-size:17px;font-weight:600;margin:25px 0 12px}.quantity-label small{font-size:14px;font-weight:400;color:var(--muted)}.quantity-row{display:flex;flex-wrap:wrap;gap:8px}.quantity-row button{border:1px solid var(--line);border-radius:9px;min-width:48px;height:46px;font-size:18px;padding:0 12px}.quantity-row button[aria-pressed=true]{border-color:var(--accent);background:var(--accent);color:white}.field-help{font-size:15px;color:var(--muted);margin-top:16px;line-height:1.6}.field{display:flex;flex-direction:column;gap:9px;font-size:16px}.field select,.field input{border:1px solid var(--line);border-radius:9px;background:var(--surface);padding:10px 12px;min-width:0;width:100%;font-size:17px}.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:20px}.storage-block+.storage-block{border-top:1px solid var(--line);margin-top:26px;padding-top:24px}.storage-block h3{margin-bottom:15px}.hardware-bottom{padding:0 26px 24px}.selection-note{font-size:15px;line-height:1.5;color:var(--warm);margin-bottom:16px;min-height:23px}.primary,.secondary{border:1px solid var(--accent);border-radius:10px;padding:13px 24px;font-size:17px;font-weight:600;min-height:50px;display:inline-flex;justify-content:center;align-items:center}.primary{background:var(--accent);color:white;box-shadow:0 4px 10px #007d8316}.secondary{background:var(--surface);color:var(--accent);border-color:var(--line)}.hardware-bottom>.primary{width:100%}.task-footer{border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:10px 26px;background:var(--soft);gap:12px;font-size:14px;color:var(--muted)}.text-button{font-size:14px;color:var(--accent);padding:8px 0;white-space:nowrap}.bottom-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:28px 0}.bottom-bar strong{font-size:19px;display:block}.bottom-bar span{display:block;font-size:14px;color:var(--muted);margin-top:7px}.actions{display:flex;gap:12px;flex-shrink:0}.details-section{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line)}summary{font-size:17px;font-weight:600;padding:22px 0;list-style:none;display:flex;align-items:center;gap:12px}summary:after{content:"＋";margin-left:auto;font-size:22px;font-weight:400;color:var(--muted)}details[open]>summary:after{content:"−"}summary span{font-weight:400;font-size:14px;color:var(--muted)}.method-content{max-width:960px;padding:0 0 24px;font-size:16px;color:var(--muted)}.method-content h3{color:var(--ink);margin:16px 0 8px}.source-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.source-links a{border:1px solid var(--line);padding:10px 14px;border-radius:8px;color:var(--accent);font-size:14px}.bom-row{display:grid;grid-template-columns:100px 1fr 80px;gap:16px;padding:16px 20px;border-bottom:1px solid var(--line);font-size:16px;background:var(--surface)}.bom-row:last-child{border:0;margin-bottom:22px}.bom-row>span:first-child{color:var(--muted)}.bom-row>span:last-child{text-align:right}.issue{font-size:15px;padding:15px 18px;margin-bottom:10px;line-height:1.7;border-radius:10px;background:var(--warn-bg);color:var(--warm)}.issue.error{background:#fff0ef;color:var(--danger)}.model-options{display:flex;flex-direction:column;gap:10px}.model-options .option-button{min-height:62px}.model-options .option-button strong{font-size:18px}.advanced{margin-top:20px}.advanced summary{font-size:15px;padding:10px 0;color:var(--muted)}.advanced .field-grid{margin-top:8px;padding-bottom:18px}.model-result{margin:0 26px 26px;border:1px solid var(--line);border-radius:13px;overflow:hidden}.result-head{padding:18px 20px;background:var(--accent-soft);display:flex;align-items:center;gap:12px}.result-head.warn{background:var(--warn-bg);color:var(--warm)}.result-head.error{background:#fff0ef;color:var(--danger)}.result-head strong{font-size:21px}.result-head p{font-size:14px;margin-top:4px;color:var(--muted)}.result-icon{font-size:25px}.memory-visual{padding:20px}.memory-top{display:flex;justify-content:space-between;align-items:baseline;gap:8px;font-size:14px;color:var(--muted)}.memory-top strong{font-size:25px;color:var(--ink)}.memory-top strong small{font-size:14px}.memory-track{height:14px;display:flex;overflow:hidden;border-radius:10px;background:var(--soft);margin:14px 0}.memory-track span{height:100%;flex-shrink:0}.memory-legend{display:flex;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--muted)}.memory-legend i{display:inline-block;width:8px;height:8px;border-radius:3px;margin-right:5px}.speed-result{border-top:1px solid var(--line);padding:16px 20px;display:flex;justify-content:space-between;align-items:center;font-size:16px}.speed-result strong{font-size:20px;color:var(--muted)}.model-result details{border-top:1px solid var(--line);border-bottom:0;padding:0 20px}.model-result summary{font-size:14px;padding:13px 0;font-weight:400}.model-result details p{font-size:14px;color:var(--muted);padding-bottom:12px}.result-empty{padding:24px;font-size:16px;line-height:1.6}.error-banner{background:#fff0ef;color:var(--danger);border:1px solid #efc0bb;border-radius:12px;padding:18px 22px;margin-bottom:20px;font-size:17px}footer{padding:32px 0;display:flex;justify-content:space-between;font-size:13px;color:var(--muted);gap:20px}#toast{position:fixed;bottom:26px;left:50%;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:var(--ink);color:white;border-radius:10px;padding:14px 23px;box-shadow:var(--shadow);transition:opacity .18s,transform .18s;z-index:9;font-size:16px;max-width:90vw}#toast.show{opacity:1;transform:translate(-50%,0)}[data-theme=warm]{--bg:#f7f4ee;--surface:#fffdfa;--soft:#f0ece5;--line:#dcd5c9;--ink:#3b403f;--muted:#666d69;--accent:#52736a;--accent-soft:#eaf0e8;--focus:#396f8f}
.controls:has([data-field=gpu]) .option-button{min-height:72px;padding-top:11px;padding-bottom:11px}.controls:has([data-field=gpu]) .option-button small{font-size:15px}.sensitivity .field{margin:4px 0 14px}.sensitivity .secondary{width:100%;margin-bottom:16px}.sensitivity #sensitivity-result>strong{font-size:26px;display:block;color:var(--warm);margin-bottom:10px}.sensitivity #sensitivity-result>strong small{font-size:14px}.viewer-wrap{height:clamp(360px,calc(100vh - 380px),520px)}
@media(min-width:1500px){.viewer-wrap{height:520px}.controls{padding:28px 30px}.part-nav{padding:22px 26px 0}}
@media(max-width:1100px){.workbench{grid-template-columns:minmax(0,1fr) minmax(420px,1fr);gap:18px}main{padding:26px 20px 0}.machine-heading{display:block}.machine-heading>span{display:block;margin-top:8px}.machine-heading h2{font-size:18px}.machine-numbers{padding:18px;gap:10px}.machine-numbers>div+div{padding-left:14px}.machine-numbers strong{font-size:22px}.controls{padding:23px}.page-heading{gap:20px}.machine-choice button{min-width:170px;padding:10px 15px}}
@media(max-width:850px){.topbar{height:75px;padding:0 20px}.workbench{grid-template-columns:1fr}.machine-column{position:static}.viewer-wrap{height:420px}.machine-heading{display:flex}.machine-heading>span{margin:0}.page-heading{align-items:flex-start;flex-direction:column;gap:22px}.machine-choice{width:100%}.machine-choice button{width:50%}.bottom-bar{align-items:flex-start;flex-direction:column}.actions{width:100%}.actions button{flex:1}.task-tabs button{height:67px}.controls{padding:24px}.hardware-bottom{padding:0 24px 24px}.task-footer{padding:8px 24px}.model-result{margin:0 24px 24px}h1{font-size:32px}}
@media(max-width:480px){main{padding:24px 14px 0}.topbar{padding:0 16px}.brand-symbol{width:37px;height:37px;font-size:22px}.brand strong{font-size:19px}.brand small{font-size:10px}.header-right{gap:8px}.local-label{font-size:12px}.icon-button{font-size:12px;padding:6px 8px}.machine-choice button{min-width:0;padding:12px}.machine-choice strong{font-size:16px}.machine-choice span{font-size:12px}.machine-heading{padding:20px 18px 10px;display:block}.machine-heading>div{gap:12px}.machine-heading>span{margin-top:7px;font-size:13px}.viewer-wrap{height:370px}.machine-numbers{padding:18px 16px}.machine-numbers strong{font-size:22px}.machine-numbers span{font-size:12px}.machine-numbers strong small{font-size:12px}.scene-note{padding:0 16px 14px;font-size:12px}.scene-note button{font-size:12px}.task-tabs{padding:0 20px}.part-nav{padding:18px 14px 0;gap:2px}.part-nav button{font-size:15px}.controls{padding:22px 18px}.option-button{padding:12px;min-height:68px}.option-button strong{font-size:16px}.option-button small{font-size:13px}.option-grid{gap:9px}.control-heading h3{font-size:21px}.control-heading span{font-size:13px}.quantity-row{gap:6px}.quantity-row button{min-width:42px;padding:0 10px;font-size:17px}.field-grid{gap:12px}.field{font-size:15px}.field select,.field input{font-size:16px;padding:10px}.model-result{margin:0 18px 22px}.result-head{padding:16px}.result-head strong{font-size:19px}.memory-visual{padding:17px}.memory-top strong{font-size:23px}.task-footer{padding:8px 18px;font-size:12px}.hardware-bottom{padding:0 18px 22px}.bottom-bar strong{font-size:17px;line-height:1.5}.actions{gap:9px}.actions button{padding:12px 15px;font-size:16px}.bom-row{grid-template-columns:64px 1fr 40px;gap:9px;padding:14px 10px;font-size:14px}.method-content{font-size:15px}footer{flex-direction:column;gap:8px;line-height:1.5}.page-heading p{font-size:16px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;scroll-behavior:auto!important}}

/* Iteration 2: clearer steps, capacity-first options, contextual consultation. */
.nic-intro{margin-bottom:14px;color:var(--muted);font-size:16px}.controls:has([data-field=nic]) .option-button small{overflow-wrap:anywhere}.nic-ports{white-space:nowrap}
.simulation-result{padding:21px 20px;background:var(--soft);border-top:1px solid var(--line)}.simulation-result>span:first-child{font-size:15px;color:var(--muted)}.simulation-result>strong{display:block;margin:7px 0 10px;font-size:32px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums}.simulation-result>strong small{font-size:16px;font-weight:400}.simulation-result p{font-size:14px;color:var(--muted)}.simulation-disclaimer{display:inline-block;margin-top:10px;font-size:13px;color:var(--warm)}.video-result{padding:20px}.video-result h3{font-size:20px}.video-result p{font-size:15px;color:var(--muted);margin:12px 0}.video-result .speed-result{padding:16px 0;margin-top:18px}.video-result a{font-size:15px;color:var(--accent);text-decoration:underline;display:block;margin-top:12px}
.part-nav{grid-template-columns:repeat(7,minmax(0,1fr));gap:3px}.part-nav button{padding:6px 4px;font-size:15px}.step-actions{display:grid;grid-template-columns:1fr 1.65fr;gap:12px}.step-actions button{padding:12px;min-width:0}.step-actions button:disabled{cursor:default;opacity:.35}.review-back{display:flex;justify-content:space-between;gap:12px;padding:12px 26px 0}.capacity-total{display:flex;align-items:center;justify-content:space-between;margin-top:24px;padding:16px 18px;border-radius:12px;background:var(--soft);font-size:16px}.capacity-total strong{font-size:29px;font-variant-numeric:tabular-nums}.capacity-total small{font-size:16px;font-weight:400}.controls:has([data-field=memory]) .option-button strong{font-size:22px}.controls:has([data-field=nic]) .option-button strong{font-size:21px}.controls:has([data-field=memory]) .option-button,.controls:has([data-field=nic]) .option-button{min-height:88px}.bay-meter{border:1px solid var(--line);background:var(--soft);border-radius:12px;padding:15px 16px;margin-bottom:22px}.bay-meter>div:first-child{display:flex;justify-content:space-between;gap:10px;font-size:16px}.bay-meter span{color:var(--accent)}.bay-slots{display:grid;grid-template-columns:repeat(12,1fr);gap:5px;margin-top:12px}.bay-slots i{height:18px;border:1px solid var(--line);border-radius:3px;background:var(--surface)}.bay-slots i.used{background:var(--accent);border-color:var(--accent)}.bay-meter.over{border-color:var(--danger)}.bay-meter.over span{color:var(--danger)}.bay-meter.over .used{background:var(--danger);border-color:var(--danger)}.storage-block h3{font-size:18px;margin-bottom:0}.storage-block .field-grid{margin-top:14px}.storage-block+.storage-block{margin-top:20px;padding-top:20px}.bom-row small{font-weight:400;color:var(--muted);white-space:nowrap}.quote-panel{margin-top:24px;padding:24px 28px;border:1px solid var(--line);border-radius:16px;background:var(--surface);display:grid;grid-template-columns:1fr auto;gap:18px 26px;align-items:center}.eyebrow{font-size:13px;font-weight:600;color:var(--muted);display:block;margin-bottom:6px;letter-spacing:.5px}.quote-panel h2{font-size:28px;font-variant-numeric:tabular-nums}.quote-panel p{font-size:15px;color:var(--muted);margin-top:7px}.quote-panel details{grid-column:1/-1;border:0;border-top:1px solid var(--line)}.quote-panel summary{padding:15px 0 0;font-size:15px}.price-row{display:flex;justify-content:space-between;gap:18px;padding:14px 0;border-bottom:1px solid var(--line);font-size:15px}.price-row strong{white-space:nowrap}.consult-fab{position:fixed;right:24px;bottom:25px;display:flex;gap:11px;align-items:center;background:var(--accent);color:white;z-index:10;border-radius:16px;padding:15px 21px;box-shadow:0 8px 24px #17394e30;border:1px solid #ffffff70}.consult-fab strong{font-size:17px;display:block}.consult-fab small{font-size:12px;opacity:.9;display:block;margin-top:2px;text-align:left}.consult-fab:hover{box-shadow:0 9px 28px #17394e45}.consult-fab:focus-visible{outline-offset:4px}main{padding-bottom:90px}dialog{border:1px solid var(--line);border-radius:22px;padding:30px;max-width:560px;width:calc(100% - 32px);max-height:calc(100dvh - 40px);background:var(--surface);color:var(--ink);box-shadow:0 25px 90px #17394e35}dialog::backdrop{background:#17394e75;backdrop-filter:blur(3px)}.consult-heading{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.consult-heading h2{font-size:25px}.consult-intro{font-size:16px;color:var(--muted);margin:16px 0 22px}.field textarea{font:inherit;font-size:15px;color:var(--ink);width:100%;resize:vertical;min-height:160px;border:1px solid var(--line);border-radius:10px;padding:14px;background:var(--soft);line-height:1.65}.consult-actions{display:grid;grid-template-columns:1fr 1.65fr;gap:12px;margin-top:22px}.consult-actions button{padding:12px}.consult-phone{display:block;text-align:center;color:var(--accent);font-size:15px;padding:18px 0 0}.consult-phone:focus-visible{outline-offset:2px}.model-filter{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:17px}.model-filter button{border:1px solid var(--line);border-radius:8px;font-size:15px;padding:7px 14px}.model-filter button[aria-pressed=true]{color:var(--accent);background:var(--accent-soft);border-color:var(--accent)}.model-select-info{font-size:14px;color:var(--muted);line-height:1.6;margin-top:10px}.model-select-info a{text-decoration:underline;color:var(--accent)}
@media(max-width:850px){.consult-fab{bottom:16px;right:20px}.quote-panel{padding:22px}.quote-panel>.primary{padding:13px 18px}.quote-panel h2{font-size:26px}}
@media(min-width:851px){.consult-fab{left:24px;right:auto}}
@media(max-width:480px){.controls:has([data-field=nic]) .option-button strong{font-size:20px}.nic-ports{display:block;font-size:16px;margin-top:3px}.machine-numbers strong{display:flex;align-items:baseline;gap:4px;font-size:20px;white-space:nowrap}}
@media(max-width:480px){.part-nav{display:flex;overflow:auto;scrollbar-width:none;padding-bottom:2px}.part-nav button{flex:0 0 auto;padding:9px 12px}.step-actions{gap:10px}.step-actions button{font-size:16px}.review-back{padding:12px 18px 0}.review-back .text-button{font-size:14px}.quote-panel{padding:20px;grid-template-columns:1fr}.quote-panel>.primary{width:100%}.quote-panel h2{font-size:27px}.quote-panel details{grid-column:1}.consult-fab{bottom:0;left:0;right:0;border:0;border-top:1px solid var(--line);border-radius:0;justify-content:center;padding:12px 18px calc(12px + env(safe-area-inset-bottom));box-shadow:0 -5px 22px #17394e16}.consult-fab small{display:none}.consult-fab strong{font-size:18px}.consult-fab svg{width:22px;height:22px}dialog{padding:24px 20px;border-radius:18px;max-height:calc(100dvh - 24px)}.consult-actions button{font-size:15px}.consult-heading h2{font-size:23px}.price-row{font-size:14px}.price-row span{overflow-wrap:anywhere}.capacity-total{padding:14px}.controls:has([data-field=memory]) .option-button strong{font-size:21px}#toast{bottom:80px}}