:root{--ink:#192d40;--muted:#526477;--line:#ccd7df;--paper:#fff;--bg:#f4f7f9;--accent:#1e6077;--pale:#eaf1f5}*{box-sizing:border-box}html{scroll-behavior:auto;scroll-padding-top:110px}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.8 "Microsoft YaHei","PingFang SC",sans-serif}button,input,select{font:inherit}a{color:inherit;text-underline-offset:4px}button,a,select{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default}a:focus-visible,button:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #246baf;outline-offset:4px}[hidden]{display:none!important}h1,h2,h3,h4,p{margin:0}p{overflow-wrap:anywhere}h1{font-size:48px;font-weight:650;line-height:1.3;letter-spacing:-1px;max-width:950px;margin:15px 0 22px}h2{font-size:28px;line-height:1.4;font-weight:650}h3{font-size:20px;line-height:1.5;margin:10px 0}h4{font-size:26px;line-height:1.4;margin:16px 0}.wrap{width:min(1160px,calc(100% - 64px));margin:auto}.skip{position:absolute;top:-100px;left:20px;background:white;padding:12px;z-index:100}.skip:focus{top:10px}.review-bar{background:#e8eef2;border-bottom:1px solid var(--line);display:flex;gap:16px;justify-content:space-between;padding:7px max(32px,calc((100% - 1280px)/2));font-size:12px;color:#43586c}.review-bar a{white-space:nowrap}.site-header{position:sticky;top:0;background:#fffffff5;border-bottom:1px solid var(--line);z-index:20}.header-top{max-width:1344px;margin:auto;min-height:91px;display:flex;justify-content:space-between;align-items:center;gap:24px;padding:16px 32px}.brand{display:flex;align-items:center;gap:13px;text-decoration:none}.logo-slot{width:53px;height:45px;border:1px dashed #8195a6;display:grid;place-items:center;font-size:11px;color:var(--muted);font-weight:400}.brand strong{font-size:22px;line-height:1.2;font-weight:650}.brand small{display:block;font-size:10px;color:var(--muted);letter-spacing:1px;white-space:nowrap}nav{display:flex;gap:25px;align-items:center;font-size:14px}nav a{text-decoration:none;min-height:44px;display:flex;align-items:center;border-bottom:2px solid transparent;white-space:nowrap}nav a[aria-current]{border-color:var(--ink);font-weight:700}nav a:hover{color:var(--accent)}.menu-button{display:none}.hero{background:var(--pale);border-bottom:1px solid var(--line);padding:62px 0 55px}.eyebrow{font-size:12px;letter-spacing:2px;color:var(--muted);margin-bottom:20px}.hero-intro{max-width:890px;font-size:18px;line-height:1.9;color:#394f62}.badge{display:inline-block;font-size:11px;font-weight:400;line-height:1.5;padding:4px 8px;border:1px solid #9badba;color:#42596a;background:#f3f6f8;border-radius:3px}.badge.confirmed{background:#e9f2ef;color:#31574c;border-color:#a0b8ae}.badge.draft{background:#faf5e9;color:#6b5b33;border-color:#c3b790}.dual{display:grid;grid-template-columns:1fr 1fr;gap:14px}.hero-dual{max-width:688px;margin-top:29px}.button{display:flex;align-items:center;justify-content:space-between;gap:12px;text-decoration:none;min-height:50px;padding:11px 19px;border:1px solid #546c7f;border-radius:4px;background:var(--paper);color:var(--ink);font-weight:600;font-size:15px;line-height:1.5}.button:hover{background:#e8f0f5;border-color:#1e6077}.page-content{padding-bottom:55px}.section{padding:54px 0;border-bottom:1px solid var(--line)}.section-head{display:flex;gap:22px;align-items:baseline;margin-bottom:28px}.section-head p{color:var(--muted);margin-top:10px}.number{font:14px/1.5 Consolas,monospace;color:#6a8294;min-width:24px}.grid{display:grid;gap:18px}.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.card,.business-card{padding:26px;border:1px solid var(--line);border-radius:5px;background:#fff}.card p,.business-card p{color:var(--muted);font-size:15px}.business-card{text-decoration:none;display:block;background:#fafcfd}.business-card:hover{border-color:#567183;background:#f1f6f8}.business-card h3{display:flex;justify-content:space-between;gap:15px}.business-card .badge{margin-top:18px}.small-label{font-size:12px;letter-spacing:1px;color:var(--muted)}.path-card .button{margin-top:20px}.text-link{font-size:14px;display:inline-block;margin-top:18px;font-weight:600}.muted{color:var(--muted);font-size:14px;margin-top:16px}.demo{padding:26px;border:1px solid #a9b9c6;border-radius:5px;background:#f6f9fb}.demo>.muted{margin:8px 0 24px;max-width:900px}.demo-layout{display:grid;grid-template-columns:270px 1fr;gap:22px}.step-controls{display:grid;gap:8px;align-content:start}.step-button{border:1px solid var(--line);background:white;text-align:left;padding:12px 16px;color:var(--ink);font-size:14px;line-height:1.6;min-height:48px;display:flex;gap:14px;border-radius:3px}.step-button span{color:#657c8e;font-family:Consolas,monospace}.step-button[aria-pressed=true]{background:#e1ebf1;border-color:#6a899e;font-weight:600}.step-panels{border:1px solid var(--line);background:white;padding:28px;min-height:260px}.step-panel p{color:#425c71}.output{margin-top:26px;padding-top:18px;border-top:1px dashed #b7c7d3;font-size:14px}.subsection{padding-top:35px;margin-top:35px;border-top:1px dashed #b3c2cd;scroll-margin-top:110px}.split-heading{display:flex;align-items:center;justify-content:space-between;gap:20px}.touch-tabs{display:flex;gap:12px;margin:22px 0}.touch-tabs button{flex:1;min-height:48px;padding:12px;border:1px solid #9eb0be;background:white;color:var(--ink);border-radius:3px;font-size:15px}.touch-tabs button[aria-pressed=true]{background:#e1ebf1;border-color:#617f94;font-weight:600}.supporting{background:#f2f6f8;padding:24px;margin-top:25px;border-left:3px solid #8aa1b3}.supporting .button{max-width:400px;margin-top:18px}.faq-list details{border-bottom:1px solid var(--line);padding:18px 4px}.faq-list summary{cursor:pointer;font-weight:600;min-height:30px;line-height:1.7}.faq-list details p{padding:15px 22px 2px;color:var(--muted)}.notice{border:1px dashed #9faeba;background:#f6f8fa;padding:18px 22px;margin-bottom:22px;font-size:14px;color:#465c6c}.consult-card{border:1px solid #98acbd;padding:28px;border-radius:5px;scroll-margin-top:120px}.consult-card>p{font-size:14px;color:var(--muted);margin-bottom:18px}.consult-card label{display:block;font-size:13px;font-weight:600;margin:16px 0 7px}select{width:100%;height:47px;border:1px solid #aebfca;background:white;border-radius:3px;color:var(--ink);padding:8px;font-size:15px}.form-preview{width:100%;margin-top:23px;justify-content:center}.form-result{font-size:13px;padding:14px;background:#f2f5f8;margin-top:15px;min-height:75px;color:#486075}.review-notes{margin-top:28px;padding:20px;background:#f1f4f7;font-size:13px;color:#4a6174}.review-notes summary{cursor:pointer;font-weight:600}.review-notes p{margin-top:12px}.site-footer{background:#eaf0f4;border-top:1px solid var(--line);padding:35px 0;font-size:13px;color:#4b6172}.site-footer p{margin:8px 0}.site-footer a{font-size:12px}.mobile-dual{display:none}.noscript{position:fixed;bottom:0;left:0;right:0;background:#fff0bf;color:#523c00;padding:15px;z-index:50}@media(max-width:1050px){.header-top{flex-wrap:wrap;gap:10px}nav{gap:24px;justify-content:space-between;width:100%}.site-header{position:static}html{scroll-padding-top:16px}.consult-card,.subsection{scroll-margin-top:20px}h1{font-size:40px}}@media(max-width:700px){body{font-size:15px;padding-bottom:78px}.wrap{width:calc(100% - 36px)}.review-bar{display:block;padding:7px 18px;font-size:10px}.review-bar a{display:none}.header-top{padding:15px 18px;min-height:76px;gap:12px}.brand{gap:9px}.brand strong{font-size:19px}.brand small{font-size:8px;letter-spacing:0}.logo-slot{width:41px;height:38px;font-size:9px}.menu-button{display:block;border:1px solid #a4b5c3;background:white;min-height:42px;padding:6px 10px;border-radius:3px;font-size:12px;color:var(--ink)}nav{display:none;flex-direction:column;align-items:stretch;gap:0;font-size:14px}nav.open{display:flex}nav a{padding:7px 9px;border-bottom:1px solid var(--line)}nav a[aria-current]{background:var(--pale);border-color:var(--line)}.hero{padding:32px 0}.eyebrow{font-size:10px;letter-spacing:1px;margin-bottom:17px}h1{font-size:32px;line-height:1.4;letter-spacing:-.4px;margin:15px 0 18px}h2{font-size:23px}h3{font-size:19px}h4{font-size:23px}.hero-intro{font-size:15px;line-height:1.9}.hero-dual{gap:10px;margin-top:23px}.hero-dual .button{font-size:13px;min-height:62px;padding:10px 13px;gap:5px}.hero-dual .button span{display:none}.section{padding:34px 0}.section-head{gap:13px;margin-bottom:22px}.number{font-size:12px;min-width:18px}.grid{gap:14px}.cols-2,.cols-3{grid-template-columns:1fr}.card,.business-card{padding:22px}.business-card h3{font-size:20px}.card p,.business-card p{font-size:14px}.demo{padding:18px}.demo-layout{grid-template-columns:1fr;gap:15px}.step-controls{grid-template-columns:1fr 1fr;gap:8px}.step-button{padding:10px 9px;gap:6px;align-items:center;font-size:12px}.step-panels{padding:20px;min-height:260px}.step-panel p{font-size:14px}.step-panels .small-label{font-size:10px}.split-heading{display:block}.split-heading .text-link{margin:0 0 10px}.touch-tabs{gap:8px}.touch-tabs button{font-size:13px;padding:10px 5px}.supporting{padding:20px}.supporting p{font-size:14px}.consult-card{padding:22px}.consult-card h3{font-size:21px}.notice{padding:15px}.mobile-dual{display:block;position:fixed;z-index:40;bottom:0;left:0;right:0;background:#fffffff5;border-top:1px solid #a4b8c6;padding:10px 12px calc(10px + env(safe-area-inset-bottom))}.mobile-dual .dual{gap:8px}.mobile-dual .button{font-size:12px;padding:10px 8px;min-height:45px;justify-content:center}.mobile-dual .button span{display:none}.site-footer{padding:28px 0}.faq-list details p{padding-left:8px;padding-right:8px}.review-notes{padding:17px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}@media print{.review-bar,.site-header,.mobile-dual,.form-preview{display:none}body{padding:0}.hero{padding:24px 0}.wrap{width:100%}.section{break-inside:avoid}.step-panel[hidden]{display:block!important}.step-controls{display:none}.step-panels{min-height:0}.grid{grid-template-columns:1fr 1fr}.site-footer{background:white}.button{color:#000}}

/* V1.1: retained low-fidelity visual system; content routes and focus safety. */
:root{--dock-height:0px;--header-height:91px}
html{scroll-padding-top:calc(var(--header-height) + 12px);scroll-padding-bottom:calc(var(--dock-height) + 16px)}
body{padding-bottom:var(--dock-height)}
a,button,select,summary,[id]{scroll-margin-top:12px;scroll-margin-bottom:16px}
.positioning{font-size:17px;color:#39556c;font-weight:600;margin-bottom:18px}
.product-nav{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-start;width:100%;margin-top:24px}
.product-nav a{border:1px solid #a7bbc9;background:#f3f7fa;border-radius:3px;padding:10px 18px;min-height:46px;text-decoration:none}
.table-wrap{overflow-x:auto;margin-top:20px}table{border-collapse:collapse;width:100%;font-size:14px}th,td{text-align:left;padding:14px;border:1px solid var(--line);vertical-align:top}th{background:#edf3f7}
.title-line{display:block}.payment-title{font-size:44px;line-height:1.5}.mobile-dual{background:#fff}
.site-footer a{display:inline-flex;align-items:center;min-height:44px}.scenario-grid{margin-top:20px}.scenario-grid ol{font-size:14px;padding-left:23px}.product-block{scroll-margin-top:16px}
.demo>.muted{margin-bottom:20px}.subsection{scroll-margin-top:16px}.consult-card{scroll-margin-top:16px}
@media(max-width:1050px){:root{--header-height:0px}}
@media(max-width:700px){:root{--dock-height:calc(66px + env(safe-area-inset-bottom))}body{padding-bottom:var(--dock-height)}.positioning{font-size:14px;line-height:1.8}.product-nav{display:grid;grid-template-columns:1fr 1fr;gap:9px}.product-nav a{display:flex;justify-content:center;font-size:13px;padding:9px;white-space:normal}.payment-title{font-size:clamp(22px,6.1vw,28px);line-height:1.7;letter-spacing:0}.payment-title .title-line{white-space:nowrap}.table-wrap table{font-size:12px;table-layout:fixed}th,td{padding:10px 8px;overflow-wrap:anywhere}.table-wrap th:first-child{width:23%}.table-wrap th:last-child{width:26%}.site-footer a{font-size:13px}.brand small{font-size:8px}.demo-layout{gap:15px}}
@media(max-width:360px){.header-top{gap:8px}.brand{gap:7px}.brand strong{font-size:18px}.brand small{font-size:7px}.logo-slot{width:35px}.menu-button{padding:6px 8px;font-size:11px}.hero-dual .button{font-size:12px;padding:9px;min-height:57px}.mobile-dual{padding-left:9px;padding-right:9px}.mobile-dual .button{font-size:11px;padding:10px 5px}.step-button{font-size:11px;gap:4px;padding:10px 7px}}
@media print{body{padding-bottom:0}}