:root{color-scheme:light;--text:#181818;--text-soft:#686868;--accent:#191919;--accent-hover:#3a3a3a;--accent-soft:#f3f3f1;--surface:#fff;--surface-muted:#f6f6f4;--line:#e4e4e1;--dark:#181818;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--shadow-soft:0 8px 28px #1329540a;--shadow:0 16px 42px #13295417;--container:1240px;--font-body:-apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:108px}body{background:var(--surface);color:var(--text);font:16px/1.8 var(--font-body);-webkit-font-smoothing:antialiased;margin:0}a{color:inherit;text-underline-offset:4px}a:hover{color:var(--accent)}button,input,textarea,select{font:inherit}button,summary,a{-webkit-tap-highlight-color:transparent}:focus-visible{outline:3px solid var(--accent);outline-offset:5px}h1,h2,h3,h4,p,ul,ol{margin-top:0}h1,h2,h3,h4{letter-spacing:-.035em;text-wrap:pretty;font-weight:700;line-height:1.4}h1{font-size:clamp(2rem,3.7vw,3.25rem)}h2{font-size:clamp(1.5rem,2.6vw,2.2rem)}h3{font-size:1.2rem}p{margin-bottom:1em}img,svg{vertical-align:middle;max-width:100%}img{height:auto}hr{border:0;border-top:1px solid var(--line);margin:2rem 0}.container{width:min(var(--container), calc(100% - 80px));margin-inline:auto}main{min-height:60vh}.skip-link{z-index:100;background:var(--text);color:#fff;padding:12px 20px;position:fixed;top:-100px;left:20px}.skip-link:focus{color:#fff;top:12px}.site-header{z-index:30;border-bottom:1px solid var(--line);background:#fffffff7;position:sticky;top:0}.site-header__inner{justify-content:space-between;align-items:center;gap:24px;min-height:88px;display:flex}.site-brand{flex-shrink:0;align-items:center;gap:11px;text-decoration:none;display:inline-flex}.site-brand__mark{background:var(--accent);color:#fff;letter-spacing:-4px;border-radius:12px;place-items:center;width:44px;height:44px;padding-bottom:6px;padding-right:4px;font:800 38px/1 Arial,sans-serif;display:grid}.site-brand__copy strong{align-items:center;gap:8px;font-size:1.25rem;line-height:1.3;display:flex}.site-brand__copy strong span{letter-spacing:.1em;font:700 12px/1.3 Arial,sans-serif}.site-brand__copy small{color:var(--text-soft);margin-top:2px;font-size:12px;display:block}.site-nav{gap:clamp(16px,2vw,28px);display:flex}.site-nav a{white-space:nowrap;padding-block:31px;font-size:14px;text-decoration:none;position:relative}.site-nav a[aria-current]{color:var(--accent);font-weight:650}.site-nav a[aria-current]:after{content:"";background:var(--accent);height:2px;position:absolute;bottom:19px;left:0;right:0}.nav-cta{background:var(--text);color:#fff;border-radius:var(--radius-sm);white-space:nowrap;align-items:center;gap:20px;padding:10px 17px;font-size:14px;text-decoration:none;display:inline-flex}.mobile-menu{display:none}.eyebrow{color:var(--accent);letter-spacing:.12em;margin-bottom:18px;font-size:13px;font-weight:650}.lead{color:var(--text-soft);max-width:660px;font-size:1.0625rem;line-height:1.95}.button-row{flex-wrap:wrap;gap:12px;margin-top:28px;display:flex}.button{border:1px solid var(--accent);border-radius:var(--radius-sm);background:var(--accent);color:#fff;justify-content:center;align-items:center;gap:28px;min-height:50px;padding:11px 24px;font-size:15px;font-weight:600;text-decoration:none;transition:background .18s,transform .18s;display:inline-flex}.button:hover{background:var(--accent-hover);color:#fff;transform:translateY(-2px)}.button--secondary{color:var(--text);border-color:var(--line);background:0 0}.button--secondary:hover{background:var(--accent-soft);color:var(--accent);border-color:var(--accent)}.text-link{color:var(--accent);align-items:center;gap:12px;font-size:14px;font-weight:600;text-decoration:none;display:inline-flex}.text-link:hover{text-decoration:underline}.section{border-bottom:1px solid var(--line);padding-block:76px}.section:last-child{border-bottom:0}.section-heading{max-width:780px;margin-bottom:32px}.section-heading h2{margin-bottom:14px}.section-heading p:last-child{color:var(--text-soft);margin-bottom:0}.section-heading .eyebrow{margin-bottom:12px}.section-heading--row{justify-content:space-between;align-items:end;gap:24px;max-width:none;display:flex}.section-heading--row h2{margin-bottom:0}.section-heading--row>a{flex-shrink:0}.section--muted{background:var(--surface-muted);border-radius:var(--radius-lg);border:0;margin-block:32px;padding:44px}.card-grid,.faq-feature-grid,.faq-topic-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;display:grid}.card,.faq-feature-card,.faq-topic-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);flex-direction:column;align-items:flex-start;padding:28px;display:flex}.card h3 a,.faq-feature-card h3 a{text-decoration:none}.card p,.faq-feature-card p,.faq-topic-card p{color:var(--text-soft)}.card .text-link,.faq-feature-card .text-link,.faq-topic-card .text-link{margin-top:auto}.split-grid,.cta-panel{grid-template-columns:repeat(2,minmax(0,1fr));gap:48px;display:grid}.section-list{color:var(--text-soft);margin-bottom:0;padding-left:20px}.section-list li{padding-block:8px}.section-list li::marker{color:var(--accent)}.section-list--link{padding-left:0;list-style:none}.section-list--link a{text-decoration:none}.section-list--link li{border-bottom:1px solid var(--line)}.breadcrumbs{color:var(--text-soft);margin-top:26px;font-size:13px}.breadcrumbs ol{flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;display:flex}.breadcrumbs li{overflow-wrap:anywhere;display:inline}.breadcrumbs li+li:before{content:"/";color:#909bb0;padding-right:8px}.breadcrumbs a{text-decoration:none}.page-hero{border-bottom:1px solid var(--line);padding-block:48px 52px}.page-hero__grid{grid-template-columns:minmax(0,1fr) 310px;align-items:center;gap:64px;display:grid}.page-hero__grid:not(:has(.page-hero__aside)){grid-template-columns:minmax(0,850px)}.page-hero__copy h1{margin-bottom:20px}.page-hero__copy .lead{margin-bottom:0}.page-hero__aside{gap:16px;display:grid}.hero-side-card{border:1px solid var(--line);border-radius:var(--radius-md);padding:26px}.hero-side-card--accent{background:var(--accent-soft);border-color:#0000}.hero-side-card h2,.hero-side-card h3{font-size:1.15rem}.hero-side-card p:last-child{margin-bottom:0}.hero-contact-list,.compact-link-list{color:var(--text-soft);margin:0;padding:0;font-size:14px;list-style:none}.hero-contact-list li{margin-top:12px}.hero-contact-list strong{color:var(--text);display:block}.compact-link-list li+li{margin-top:14px}.compact-link-list a{text-decoration:none}.meta-inline,.page-hero__meta{color:var(--text-soft);flex-wrap:wrap;gap:8px 20px;margin-block:18px 0;font-size:13px;display:flex}.page-hero__meta span{background:var(--surface-muted);border-radius:4px;padding:3px 10px}.content-grid{grid-template-columns:minmax(0,1fr) 280px;align-items:start;gap:72px;padding-block:52px 80px;display:grid}.content-stack{gap:38px;min-width:0;display:grid}.sticky-panel{border-left:1px solid var(--line);max-height:calc(100dvh - 145px);padding-left:24px;font-size:14px;position:sticky;top:120px;overflow-y:auto}.sticky-panel h2{letter-spacing:0;margin-block:24px 10px;font-size:1rem}.sticky-panel .eyebrow+h2{margin-top:0}.sticky-panel .button{min-height:44px;font-size:14px}.panel-group+.panel-group{margin-top:28px}.rich-text,.prose-panel{overflow-wrap:anywhere}.rich-text{font-size:1.0625rem;line-height:1.95}.rich-text h2{margin-block:2em .8em;font-size:1.5rem}.rich-text h3{margin-top:1.6em;font-size:1.2rem}.rich-text>:first-child{margin-top:0}.rich-text li{margin-bottom:.5em}.rich-text blockquote{border-left:3px solid var(--accent);background:var(--accent-soft);margin-inline:0;padding:20px 24px}.rich-text blockquote p:last-child{margin:0}.rich-text table{border-collapse:collapse;max-width:100%;font-size:15px;display:block;overflow-x:auto}.rich-text th,.rich-text td{border:1px solid var(--line);text-align:left;padding:12px 16px}.rich-text th{background:var(--surface-muted)}.rich-text pre{background:var(--dark);color:#fff;border-radius:var(--radius-sm);max-width:100%;padding:22px;font-size:14px;line-height:1.7;overflow-x:auto}.rich-text code{overflow-wrap:anywhere;font-size:.9em}.prose-panel h2{font-size:1.4rem}.quick-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;display:grid}.quick-metric strong{color:var(--accent);font-size:2rem;display:block}.quick-metric span{color:var(--text-soft);font-size:14px}.faq-topic-card__head{justify-content:space-between;gap:16px;width:100%;margin-bottom:16px;display:flex}.faq-topic-card strong{font-size:1.2rem}.faq-topic-card em{color:var(--text-soft);font-size:13px;font-style:normal}.topic-preview-list{color:var(--text-soft);margin-bottom:24px;padding-left:20px;font-size:14px}.topic-preview-list li{margin-bottom:10px}.topic-preview-list a{text-decoration:none}.faq-stack{border-top:1px solid var(--line)}.faq-row{border-bottom:1px solid var(--line);padding-block:26px}.faq-row h3 a{text-decoration:none}.faq-row>p{color:var(--text-soft);max-width:850px}.faq-row .meta-inline{margin:0 0 10px}.pagination-bar{border-top:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;margin-top:36px;padding-top:24px;display:flex}.pagination-bar__summary{color:var(--text-soft);font-size:14px}.pagination,.pagination__numbers{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.pagination__nav,.pagination__number{border:1px solid var(--line);border-radius:var(--radius-sm);justify-content:center;align-items:center;min-width:44px;min-height:44px;padding:4px 12px;font-size:14px;text-decoration:none;display:inline-flex}.pagination__number.is-active{background:var(--accent);border-color:var(--accent);color:#fff}.pagination__nav--disabled{color:var(--text-soft);background:var(--surface-muted)}.contact-box{background:var(--accent-soft);border-radius:var(--radius-md);padding:32px}.contact-box h2{font-size:1.5rem}.contact-stage-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;display:grid}.contact-stage strong{color:var(--accent);font-size:2rem}.contact-stage h3{margin-top:20px}.contact-stage p{color:var(--text-soft)}.contact-mode-list{color:var(--text-soft);flex-wrap:wrap;gap:20px;margin-top:26px;padding:0;font-size:14px;list-style:none;display:flex}.quote-progress__item{margin-top:20px}.quote-progress__item strong,.quote-progress__item span{display:block}.site-footer{background:var(--dark);color:#f6f8ff;margin-top:24px;padding-top:64px}.footer-grid{grid-template-columns:1.2fr .65fr 1fr;gap:80px;padding-bottom:48px;display:grid}.footer-wordmark{align-items:center;gap:14px;margin-bottom:20px;font-size:1.7rem;font-weight:750;text-decoration:none;display:inline-flex}.footer-wordmark span{letter-spacing:.15em;font:600 13px/1.5 Arial,sans-serif}.footer-caption{color:#b4bfd3;margin-top:18px;font-size:14px}.footer-title{color:#b4bfd3;letter-spacing:0;margin-bottom:22px;font-size:14px;font-weight:500}.footer-links{gap:10px;margin:0;padding:0;font-size:14px;list-style:none;display:grid}.footer-links a{text-decoration:none}.footer-email{overflow-wrap:anywhere;font-size:1.25rem;text-decoration:none}.footer-bottom{color:#b4bfd3;border-top:1px solid #314058;justify-content:space-between;gap:20px;padding-block:22px;font-size:12px;display:flex}@media (width<=1100px){.site-nav{gap:16px}.nav-cta{display:none}.page-hero__grid{grid-template-columns:minmax(0,1fr) 270px;gap:32px}.content-grid{grid-template-columns:minmax(0,1fr) 240px;gap:36px}.footer-grid{gap:40px}}@media (width<=760px){.container{width:calc(100% - 40px)}.site-header__inner{gap:12px;min-height:74px}.site-nav{display:none}.site-brand__mark{width:38px;height:38px;font-size:32px}.mobile-menu{display:block}.mobile-menu summary{cursor:pointer;gap:12px;padding:12px 0 12px 16px;font-size:14px;list-style:none;display:flex}.mobile-menu summary::-webkit-details-marker{display:none}.mobile-menu nav{top:100%;border-bottom:1px solid var(--line);box-shadow:var(--shadow);background:#fff;padding:12px 20px 22px;display:grid;position:absolute;inset-inline:0}.mobile-menu nav a{border-bottom:1px solid var(--line);padding:10px 0;text-decoration:none}.mobile-menu nav a[aria-current]{color:var(--accent)}.section{padding-block:46px}.section--muted{padding:26px 22px}.section-heading--row{flex-wrap:wrap}.card-grid,.faq-feature-grid,.faq-topic-grid,.split-grid,.cta-panel,.contact-stage-grid{grid-template-columns:1fr;gap:20px}.card,.faq-feature-card,.faq-topic-card{padding:24px}.page-hero{padding-block:32px 36px}.page-hero__grid{grid-template-columns:1fr;gap:26px}.page-hero__aside{grid-template-columns:1fr}.content-grid{grid-template-columns:1fr;gap:36px;padding-block:34px 48px}.sticky-panel{border-left:0;border-top:1px solid var(--line);max-height:none;padding-top:26px;padding-left:0;position:static}.breadcrumbs{margin-top:20px;font-size:12px}.breadcrumbs li:last-child{display:none}.button{padding-inline:19px}.footer-grid{grid-template-columns:1fr 1fr;gap:32px}.footer-brand{grid-column:1/-1}.footer-email{font-size:1rem}.footer-bottom{flex-direction:column;gap:6px}}@media (width<=380px){.container{width:calc(100% - 32px)}.footer-grid{grid-template-columns:1fr}.button-row .button{width:100%}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition:none!important;animation:none!important}}body{font-weight:400}::selection{color:#111;background:#dcdcd8}h1,h2,h3{letter-spacing:-.045em;text-wrap:balance}.site-header{background:#fffffff7;border-bottom-color:#0000}.site-header__inner{min-height:98px}.site-brand{gap:20px}.site-wordmark{letter-spacing:-3px;color:var(--text);font:750 43px/1 Arial,sans-serif}.site-wordmark span{font-size:43px}.site-brand__descriptor{letter-spacing:.06em;color:#5e5e5e;border-left:1px solid #c9c9c6;padding-left:18px;font-size:12px;line-height:1.55;display:block}.site-nav{gap:30px}.site-nav a{color:#686868;padding-block:35px;font-size:14px}.site-nav a[aria-current]{color:#181818}.site-nav a[aria-current]:after{height:1px;bottom:24px}.nav-cta{color:#181818;background:#fff;border:1px solid #d8d8d5;border-radius:99px;padding:10px 22px}.nav-cta:hover{color:#fff;background:#181818}.button{border-radius:99px;gap:26px;min-height:54px;padding-inline:26px;font-weight:500}.button:hover{transform:none}.button--secondary:hover{background:#f1f1ef}.eyebrow{letter-spacing:.1em;color:#787875;font-size:12px;font-weight:500}.text-link{color:#333;font-weight:500}.page-hero{padding-block:64px 48px}.page-hero h1{margin-bottom:20px;font-size:clamp(2.2rem,4.2vw,3.6rem)}.page-hero .lead{color:#747470;font-size:16px}.breadcrumbs{color:#858581;margin-top:18px}.breadcrumbs li+li:before{color:#aaa}.reading-header{padding-top:58px;padding-bottom:40px}.reading-header h1{max-width:860px;font-size:clamp(2rem,3.6vw,3rem)}.reading-header .lead{font-size:17px;line-height:1.95}.reading-grid{padding-top:48px}.rich-text{color:#343434;line-height:2.05}.rich-text h2,.rich-text h3{color:#181818}.rich-text a{color:#333}.rich-text h2{font-size:1.6rem}.sticky-panel{border-color:#e7e7e4}.table-of-contents h2{letter-spacing:.04em;font-weight:500}.answer-summary{border-left:0;border-radius:4px;padding:24px 28px}.source-list{background:#f7f7f5}.card,.faq-feature-card,.faq-topic-card{box-shadow:none;border-radius:0}.article-row{padding-block:34px}.article-row h2{font-size:1.4rem}.article-row__link{border-color:#ddd}.article-row__link:hover{color:#fff;background:#181818}.topic-links a{border-radius:99px}.section-heading h2{font-weight:600}.contact-checklist{background:#f6f6f3}.contact-intro .contact-email{color:#181818}.site-footer{background:#181818;margin-top:0;padding-top:48px}.site-footer .footer-caption{color:#aaa}.footer-title{color:#9d9d98}.footer-wordmark{letter-spacing:-.04em;font-size:2rem}.footer-bottom{color:#9f9f9b;border-color:#393939}.site-footer a:hover{color:#d4d4cf}@media (width<=1100px){.site-nav{gap:20px}}@media (width<=760px){.site-header__inner{min-height:82px}.site-wordmark,.site-wordmark span{font-size:35px}.site-brand{gap:14px}.site-brand__descriptor{padding-left:13px}.page-hero{padding-top:36px;padding-bottom:34px}.page-hero h1{font-size:2rem}.reading-header{padding-top:32px}.reading-header h1{font-size:1.9rem}.reading-grid{padding-top:32px}.button{min-height:50px;padding-inline:23px}.article-row h2{font-size:1.2rem}}