@font-face{font-family:Manrope;src:url('manrope.ttf') format('truetype');font-style:normal;font-weight:200 800;font-display:swap}
:root{--paper:#fff;--cloud:#f5f7f9;--ink:#17242e;--muted:#586a78;--line:#dce2e7;--blue:#2857d5;--pale:#eaf0ff;--radius:12px;--max:1320px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;color:var(--ink);background:var(--paper);font-family:Manrope,'Avenir Next',sans-serif;font-size:16px;line-height:1.65}button,input,select{font:inherit}a{color:inherit}a,button,input,select{ -webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:5px}button,a{touch-action:manipulation}img,svg{max-width:100%;display:block}button{cursor:pointer}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.12;font-weight:650}h1{font-size:clamp(44px,5.6vw,80px);letter-spacing:-.057em}h2{font-size:clamp(30px,3.25vw,46px);letter-spacing:-.043em}h3{font-size:22px;letter-spacing:-.02em}.wrap{width:min(var(--max),calc(100% - 96px));margin-inline:auto}.skip-link{position:fixed;top:-100px;left:20px;padding:12px 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h2{font-size:32px;max-width:600px}.large-callout p{font-size:14px;margin-top:16px;max-width:560px;color:#c3d0da}.large-callout .button{white-space:nowrap;background:#fff;color:var(--ink)}.footer{padding-block:40px 32px;margin-top:0;border-top:1px solid var(--line)}.footer-top{display:flex;justify-content:space-between;align-items:start;gap:40px;margin-bottom:35px}.footer .brand{font-size:21px}.footer p{color:var(--muted);font-size:12px;max-width:550px;line-height:1.85;margin-top:13px}.footer-links{display:flex;gap:25px;font-size:12px;flex-wrap:wrap}.footer-links a{text-decoration:none}.footer-bottom{display:flex;justify-content:space-between;gap:25px;color:var(--muted);font-size:10px;padding-top:22px;border-top:1px solid var(--line)}.breadcrumbs{font-size:12px;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap;padding-top:26px}.breadcrumbs a{text-underline-offset:3px}.article-hero{background:var(--cloud);padding:58px 0 60px;border-bottom:1px solid var(--line)}.article-hero 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@media(min-width:1600px){.hero{max-width:1700px;margin-inline:auto}.hero-copy{padding-left:70px}}
@media(max-width:1100px){.wrap{width:calc(100% - 56px)}.hero-copy{padding:50px 30px}.hero{min-height:570px}.hero h1{font-size:58px}.benefit-strip div{display:block}.benefit-strip span{display:block;margin-top:5px}.planner-layout{gap:34px;grid-template-columns:.85fr 1.15fr}.article-layout{gap:40px;grid-template-columns:minmax(0,1fr) 240px}.nav-links{gap:20px}.section{padding-block:72px}.layout-board{padding:18px;gap:12px}.planner-result{padding:24px}}
@media(max-width:760px){.wrap{width:calc(100% - 40px)}.nav{height:74px;gap:14px}.brand{font-size:21px;gap:9px}.brand-mark{width:24px;height:24px;grid-template-columns:9px 9px;grid-template-rows:9px 9px}.nav-links{display:none;position:absolute;top:74px;left:0;right:0;z-index:10;margin:0;padding:24px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 15px 20px #17242e0b;align-items:flex-start}.nav-links.is-open{display:flex;flex-direction:column}.menu-toggle{display:block;margin-left:auto}.nav>.button{display:none}.hero{grid-template-columns:1fr;min-height:0}.hero-copy{padding:46px 24px 39px}.hero-copy h1{font-size:58px;max-width:470px}.hero-copy .lead{font-size:15px;max-width:410px;margin-top:22px}.intro-line{font-size:12px;margin-bottom:20px}.hero-actions{margin-top:26px}.hero-note{margin-top:20px;font-size:11px}.hero-media{height:360px}.hero-media>img{object-position:center 49%}.image-caption{bottom:16px;left:20px;font-size:10px}.hero-media .image-detail{top:18px;right:20px}.benefit-strip{gap:14px;padding-block:25px}.benefit-strip strong{font-size:11px}.benefit-strip span{font-size:10px;line-height:1.6}.section{padding-block:58px}.section-head{display:block;margin-bottom:28px}.section-head>p{margin-top:20px;max-width:100%;font-size:14px}.module-grid{grid-template-columns:1fr;gap:30px}.module{display:grid;grid-template-columns:118px 1fr;gap:0 18px;align-items:start}.module-figure{grid-row:1/3;padding:14px;min-height:120px;margin:0;align-self:stretch}.module-figure svg{height:100px}.module h3{font-size:18px;margin-bottom:9px}.module p{font-size:12px;line-height:1.75}.section-footnote{font-size:11px}.planner-layout{grid-template-columns:1fr;gap:28px}.planner-intro>p{max-width:100%}.planner-form{margin-top:28px}.field-row,.choice-grid{max-width:100%}.field select.wall-type{width:100%}.planner-result{padding:21px}.layout-board{min-height:250px;gap:15px;padding:18px}.layout-piece svg{height:90px}.guides-grid{grid-template-columns:1fr;gap:22px}.guide-card{min-height:0;padding-top:22px}.guide-card h3{font-size:22px}.guide-card p{font-size:13px}.large-callout{padding:32px 25px;display:block}.large-callout h2{font-size:28px}.large-callout .button{margin-top:25px}.footer-top{display:block;margin-bottom:28px}.footer-links{margin-top:26px;gap:18px}.footer-bottom{display:block;line-height:1.8}.footer-bottom span{display:block}.article-hero{padding:40px 0}.article-hero h1{font-size:40px;letter-spacing:-.047em}.article-hero .lead{font-size:15px;margin-top:22px}.article-layout{display:flex;flex-direction:column;padding-block:38px 48px;gap:16px}.article-aside{position:static;order:2}.article-body h2{font-size:25px}.article-body p,.article-body li{font-size:14px}.breadcrumbs{font-size:11px;padding-top:20px}.article-meta{flex-wrap:wrap;font-size:10px;gap:10px}.guides-intro{padding-block:45px 30px}.guides-intro h1{font-size:46px}.sources{padding:20px}.kit-visual .image-caption{font-size:9px;bottom:12px;left:12px}.desktop-only{display:none}.mobile-only{display:block}}
@media(max-width:360px){.hero-copy h1{font-size:49px}.hero-actions{gap:18px}.button{padding:12px 18px}.choice{font-size:11px}.planner-result-top{align-items:flex-start;flex-direction:column}.wrap{width:calc(100% - 32px)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

/* 表格在小屏内横向滚动，不撑宽正文。 */
.table-scroll{max-width:100%;overflow-x:auto;border:1px solid var(--line);border-radius:8px;margin:24px 0}.comparison-table{border-collapse:collapse;width:100%;min-width:640px;font-size:12px;line-height:1.6}.comparison-table th,.comparison-table td{text-align:left;vertical-align:top;padding:16px;border-bottom:1px solid var(--line)}.comparison-table thead{background:var(--cloud)}.comparison-table th{font-weight:650}.comparison-table tbody th{width:24%}.article-body{min-width:0}.comparison-table tr:last-child td,.comparison-table tr:last-child th{border-bottom:0}
@media(max-width:760px){.brand{font-size:20px;gap:8px}.brand-mark{width:24px}.comparison-table th,.comparison-table td{padding:12px}}

.brand-disclosure{font-size:11px;color:var(--muted);margin-top:14px}.table-scroll:focus-visible{outline:3px solid var(--blue);outline-offset:3px}

@media(min-width:761px) and (max-width:900px){.nav-links{display:none;position:absolute;top:88px;left:0;right:0;z-index:10;margin:0;padding:24px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 15px 20px #17242e0b;align-items:flex-start}.nav-links.is-open{display:flex;flex-direction:column}.menu-toggle{display:block;margin-left:auto}.nav>.button{display:none}.nav-links .mobile-only{display:block}}