:root{--white:#fff;--mist:#f4f5f5;--ink:#202729;--muted:#647075;--accent:#bd461c;--line:#dfe3e3;--display:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;--body:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;--mono:Menlo,Consolas,monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--white);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}body.modal-open{overflow:hidden}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}button:disabled{cursor:default}button,input{border-radius:0}img,video{max-width:100%;display:block}figure,p,h1,h2,h3,dl{margin:0}button:focus-visible,a:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--accent);outline-offset:5px}button{border:0}button[hidden],[hidden]{display:none!important}.wrap{width:min(1240px,calc(100% - 96px));margin:auto}.header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line)}.nav-wrap{width:min(1360px,calc(100% - 64px));height:86px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;line-height:1.1;font-weight:700;font-size:23px;letter-spacing:1px}.brand svg{width:35px;height:35px;fill:none;stroke:var(--accent);stroke-width:2.8}.brand small{display:block;font:9px/1.9 var(--mono);letter-spacing:2px;color:var(--muted);margin-top:5px}.desktop-nav{display:flex;gap:30px;font-size:14px}.desktop-nav a:hover,.text-link:hover{color:var(--accent)}.button{display:inline-flex;align-items:center;justify-content:center;gap:30px;background:var(--accent);color:white;min-height:56px;padding:15px 22px;line-height:1.5;font-size:15px;font-weight:600;border:1px solid var(--accent);border-radius:5px;transition:background .18s,transform .18s}.button:hover{background:#a33a16}.button:active{transform:translateY(1px)}.button span{font-size:21px;line-height:1}.button.small{min-height:44px;padding:11px 16px;font-size:13px;gap:16px}.hero{min-height:690px;display:grid;grid-template-columns: .95fr 1.25fr;align-items:center;gap:10px;padding:60px 0 40px}.eyebrow{font-size:12px;letter-spacing:2px;font-weight:600;color:var(--muted);margin-bottom:24px;display:flex;align-items:center;gap:9px}.dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent)}h1{font:600 clamp(40px,4.1vw,62px)/1.24 var(--display);letter-spacing:-1.8px}h1 em{font-style:normal;color:var(--accent)}.hero-description{margin-top:27px;color:var(--muted);font-size:17px;line-height:1.9}.hero-actions{display:flex;gap:20px;align-items:center;margin-top:30px;flex-wrap:wrap}.text-link{display:inline-flex;gap:10px;align-items:center;font-size:14px;min-height:44px}.play-small{font-size:10px;border:1px solid var(--line);width:27px;height:27px;display:grid;place-items:center;border-radius:50%;padding-left:2px}.hero-note{font-size:12px;color:var(--muted);margin-top:25px;line-height:1.9}.hero-product{min-width:0;position:relative}.hero-product img{width:100%;height:auto}.hero-product-label{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:11px;letter-spacing:1px;margin:0 18px 0 30px}.mono{font-family:var(--mono);font-size:11px;letter-spacing:1px}.hero-product figcaption{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);padding:0 18px 0 30px}.hero-product figcaption a{color:var(--ink)}.feature-line{border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:grid;grid-template-columns:repeat(4,1fr);padding:26px 0;margin-bottom:84px}.feature-line>span{border-right:1px solid var(--line);text-align:center;font-size:13px;color:var(--muted)}.feature-line>span:last-child{border:0}.feature-line b{font-weight:600;color:var(--ink);margin-right:10px;font-size:15px}.film-section{background:var(--ink);color:white;padding:68px 0}.film-grid{display:grid;grid-template-columns:1fr 1fr;gap:110px;align-items:center}.light{color:#aeb8ba}.film-copy h2{font-size:44px}.film-copy>p{max-width:370px;color:#c0c8ca;margin-top:25px}.film-points{list-style:none;padding:25px 0 0;margin:20px 0 0;border-top:1px solid #485254;max-width:360px}.film-points li{padding:9px 0;color:#dbe0e1;font-size:14px}.film-points li:before{content:'↗';color:#e78b66;margin-right:15px}.fine{font-size:12px;line-height:1.9;color:var(--muted)}.film-copy .light-fine{color:#aeb8ba;font-size:12px}.film-view{position:relative;min-width:0}.film-view video{height:440px;width:100%;object-fit:contain;background:#161b1c;border-radius:4px}.video-cover{position:absolute;inset:0 0 34px;background:linear-gradient(transparent,rgba(0,0,0,.32));color:white;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;font-size:13px}.play-large{display:grid;place-items:center;width:70px;height:70px;background:var(--white);border-radius:50%;color:var(--ink);font-size:21px;padding-left:4px;box-shadow:0 4px 40px #0003}.film-caption{display:flex;align-items:center;gap:8px;margin-top:12px;color:#c0c8ca;font-size:11px}.film-caption>span:last-child{margin-left:auto}.video-error{background:#2f3a3b;padding:20px;font-size:14px}.video-error a{text-decoration:underline}.section{padding:105px 0}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:42px}h2{font:600 38px/1.35 var(--display);letter-spacing:-.7px}h3{font-size:19px;font-weight:600;line-height:1.55}.section-heading>p{color:var(--muted);font-size:15px;line-height:1.9}.fit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}.fit-grid article{border-top:1px solid var(--ink);padding:24px 0 0}.step{font:13px var(--mono);color:var(--accent);margin-bottom:28px}.step span{font:13px var(--body);color:var(--muted);margin-left:16px}.fit-grid p{color:var(--muted);margin-top:14px;font-size:14px;min-height:72px;max-width:310px}.fit-grid details{border-top:1px solid var(--line);margin-top:26px;font-size:13px}.fit-grid details>div{padding:0 12px 16px 0;color:var(--muted)}summary{list-style:none;display:flex;justify-content:space-between;align-items:center;gap:15px;padding:18px 0;cursor:pointer;min-height:52px}summary::-webkit-details-marker{display:none}summary span{font-size:22px;font-weight:400;color:var(--muted);transition:transform .18s}details[open]>summary span{transform:rotate(45deg);color:var(--accent)}.states-section{background:var(--mist);padding:75px 0}.states-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:75px;align-items:center}.states-copy>p{margin-top:20px;color:var(--muted);font-size:15px}.state-tabs{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:30px 0;max-width:360px}.state-tabs button{display:flex;gap:14px;align-items:center;justify-content:space-between;text-align:left;background:transparent;border:1px solid #cdd3d4;border-radius:3px;padding:15px;font-size:14px;min-height:54px}.state-tabs button[aria-selected=true]{border-color:var(--accent);background:#fff;color:var(--accent);box-shadow:inset 0 -2px var(--accent)}.state-num{font:11px var(--mono);color:var(--muted)}.state-tabs button>span:nth-child(2){margin-right:auto}.states-copy .fine{font-size:12px;max-width:365px}.state-figure{background:var(--white);padding:16px 22px 20px;border:1px solid #e8ebeb;border-radius:5px;min-width:0}.state-figure img{width:100%;height:auto;aspect-ratio:1;object-fit:contain}.state-figure figcaption{padding-top:15px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}.state-figure figcaption strong{font-size:14px;font-weight:500;display:block;margin-top:5px}.state-figure figcaption>span{font-size:11px;color:var(--muted)}.package-grid{display:grid;grid-template-columns:1fr 1fr;gap:100px;align-items:center}.package-picture{position:relative;background:var(--mist);border-radius:4px;overflow:hidden}.package-picture img{width:100%;height:570px;object-fit:contain;background:#e8e9e6}.photo-tag{position:absolute;top:18px;left:18px;padding:5px 12px;border-radius:3px;font-size:11px;letter-spacing:1px;background:white;color:var(--ink)}.package-copy>p{margin:23px 0 26px;color:var(--muted);font-size:15px}.package-list{margin-bottom:28px}.package-list>div{padding:16px 0;border-top:1px solid var(--line)}.package-list dt{font-weight:600;font-size:15px}.package-list dd{font-size:13px;color:var(--muted);margin:4px 0 0}.package-copy p.fine{font-size:12px;margin:16px 0 0}.detail-section{background:var(--mist);padding:90px 0}.detail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.detail-grid button{width:100%;position:relative;padding:0;background:#e8e9e6;overflow:hidden}.detail-grid img{width:100%;height:345px;object-fit:contain;transition:filter .2s}.detail-grid button:hover img{filter:brightness(1.06)}.detail-grid button>span{position:absolute;right:12px;bottom:12px;width:36px;height:36px;display:grid;place-items:center;background:#fff;border-radius:50%;font-size:18px}.detail-grid figcaption{padding-top:20px}.detail-grid h3{font-size:17px}.detail-grid p{font-size:13px;color:var(--muted);margin-top:6px}.service-section{display:grid;grid-template-columns:1fr 1fr;gap:100px}.service-section>div>p{font-size:14px;color:var(--muted);margin-top:22px}.service-list{list-style:none;padding:0;margin:0}.service-list li{display:flex;gap:25px;padding:22px 0;border-top:1px solid var(--line)}.service-list>li>span{font:12px var(--mono);color:var(--accent);padding-top:7px}.service-list h3{font-size:17px}.service-list p{font-size:14px;margin-top:8px;color:var(--muted)}.faq-section{border-top:1px solid var(--line);padding:80px 0;display:grid;grid-template-columns:.8fr 1.2fr;gap:60px}.faq-section h2{font-size:31px}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{font-size:15px;padding:20px 0}.faq-list p{padding:0 35px 22px 0;color:var(--muted);font-size:14px}.closing{background:var(--mist);border-top:3px solid var(--accent);padding:55px 60px;display:flex;align-items:center;justify-content:space-between;gap:35px}.closing p{color:var(--muted);font-size:14px;margin-top:20px}.closing .eyebrow{margin-bottom:20px}.footer{padding:45px 0 25px}.footer-name{font-size:17px;font-weight:600}.footer>p{font-size:12px;color:var(--muted);margin:12px 0 25px}.footer>div{border-top:1px solid var(--line);padding-top:18px;display:flex;justify-content:space-between;color:var(--muted);font-size:11px}.menu-button,.mobile-nav,.mobile-cta{display:none}.skip{position:fixed;top:-100px;left:20px;background:var(--ink);color:white;padding:10px 20px;z-index:100}.skip:focus{top:10px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}dialog{border:1px solid var(--line);border-radius:8px;padding:0;width:min(510px,calc(100% - 32px));color:var(--ink);max-height:90dvh;overflow:auto}dialog::backdrop{background:rgba(20,27,29,.65);backdrop-filter:blur(5px)}.dialog-inner{padding:40px 35px;position:relative}.close-dialog{position:absolute;right:12px;top:10px;width:44px;height:44px;font-size:30px;line-height:1;background:transparent;color:var(--ink);z-index:2;border-radius:4px}.dialog-inner h2{font-size:28px}.dialog-inner>p{color:var(--muted);font-size:14px;margin-top:15px}.contact-checklist{padding:20px;background:var(--mist);font-size:13px;line-height:2;margin:23px 0}.contact-empty{font-size:13px;color:var(--muted);border-left:2px solid var(--accent);padding-left:14px;margin:20px 0}.outline-button{border:1px solid var(--line);background:#fff;font-size:14px;padding:13px 20px;min-height:48px;border-radius:4px}.outline-button:hover{border-color:var(--ink)}#contact-ready{margin:20px 0}#contact-ready .button{margin-top:15px}.photo-dialog{width:min(1000px,calc(100% - 32px));background:#f4f5f5;overflow:hidden;padding:20px}.photo-dialog img{height:calc(85dvh - 75px);width:100%;object-fit:contain}.photo-dialog p{text-align:center;font-size:13px;padding:14px 0 0}.photo-dialog .close-dialog{background:#fff}.noscript-note{padding:15px;background:var(--mist);text-align:center;font-size:13px}.image-error{padding:25px;color:var(--muted);font-size:13px}
@media(min-width:1600px){.hero{min-height:750px}.hero-product img{max-height:655px;object-fit:contain}}
@media(max-width:1100px){.wrap{width:calc(100% - 64px)}.desktop-nav{gap:18px}.nav-contact{display:none!important}.hero{grid-template-columns:1fr 1.1fr;min-height:620px}.hero-actions{gap:10px}.hero .button{padding:14px;gap:14px}.film-grid,.package-grid{gap:50px}.states-grid{gap:30px}.film-copy h2{font-size:38px}.feature-line b{display:block;margin:0}.detail-grid img{height:280px}.service-section{gap:50px}}
@media(max-width:760px){html{scroll-padding-top:83px}.wrap{width:calc(100% - 40px)}.nav-wrap{height:70px;width:calc(100% - 40px)}.brand{font-size:20px;gap:9px}.brand svg{width:30px}.brand small{font-size:8px}.desktop-nav{display:none}.menu-button{width:44px;height:44px;background:transparent;display:flex;flex-direction:column;gap:7px;justify-content:center;align-items:center}.menu-button span{height:1px;width:22px;background:var(--ink)}.mobile-nav{display:flex;flex-direction:column;padding:10px 20px 20px;border-top:1px solid var(--line)}.mobile-nav a,.mobile-nav button{text-align:left;padding:12px 8px;font-size:15px;min-height:48px}.mobile-nav button{background:var(--accent);color:#fff;margin-top:8px;border-radius:3px}.hero{display:flex;flex-direction:column;align-items:stretch;gap:30px;padding:42px 0 25px;min-height:0}.hero-copy .eyebrow{margin-bottom:22px;font-size:11px}h1{font-size:45px;line-height:1.2;letter-spacing:-1.3px}.hero-description{font-size:15px;margin-top:22px;line-height:1.8}.hero-actions{gap:14px;margin-top:25px}.hero .button{font-size:14px;gap:16px;padding:13px 16px;min-height:50px}.text-link{font-size:13px}.hero-note{font-size:11px;margin-top:18px}.hero-note br{display:none}.hero-product-label{margin:0;font-size:10px}.hero-product img{height:auto}.hero-product figcaption{padding:0;font-size:10px;gap:10px}.hero-product figcaption a{white-space:nowrap}.feature-line{grid-template-columns:repeat(2,1fr);gap:24px 0;padding:24px 0;margin-bottom:48px}.feature-line>span:nth-child(2){border:0}.feature-line b{font-size:14px}.feature-line span{font-size:12px}.film-section{padding:48px 0}.film-grid{grid-template-columns:1fr;gap:30px}.film-copy h2{font-size:33px}.film-copy>p{font-size:14px;max-width:100%;margin-top:20px}.film-points{margin-top:20px;padding-top:15px;max-width:100%}.film-points li{padding:6px 0}.film-view video{height:420px}.film-caption{font-size:10px}.section{padding:58px 0}.section-heading{display:block;margin-bottom:32px}.section-heading>p{font-size:14px;margin-top:20px}.eyebrow{margin-bottom:18px;font-size:11px}h2{font-size:32px;letter-spacing:-.5px}.fit-grid{grid-template-columns:1fr;gap:26px}.fit-grid article{padding-top:20px}.step{margin-bottom:15px}.fit-grid h3{font-size:20px}.fit-grid p{min-height:0;max-width:none;margin-top:10px}.fit-grid details{margin-top:16px}.states-section{padding:50px 0}.states-grid{grid-template-columns:1fr;gap:30px}.states-copy>p{font-size:14px;margin-top:17px}.state-tabs{grid-template-columns:repeat(4,1fr);max-width:none;gap:6px;margin:24px 0 18px}.state-tabs button{flex-direction:column;gap:5px;align-items:center;padding:11px 5px;font-size:13px}.state-tabs button>span:nth-child(2){margin:0}.state-tabs button>span:last-child{display:none}.states-copy .fine{max-width:none}.state-figure{padding:10px 15px 15px}.state-figure figcaption>span{font-size:10px}.package-grid{grid-template-columns:1fr;gap:32px}.package-picture{order:2}.package-copy{order:1}.package-picture img{height:430px}.package-copy>p{font-size:14px;margin-top:20px}.detail-section{padding:50px 0}.detail-grid{grid-template-columns:1fr;gap:32px}.detail-grid img{height:365px}.detail-grid figcaption{padding-top:15px}.service-section{grid-template-columns:1fr;gap:30px}.service-list p{font-size:13px}.faq-section{padding:50px 0;grid-template-columns:1fr;gap:22px}.faq-section h2{font-size:29px}.faq-list summary{font-size:14px}.closing{padding:30px 24px;display:block}.closing .button{margin-top:25px;font-size:14px;width:100%}.closing h2{font-size:31px}.footer{padding:30px 0 105px}.footer>p{font-size:11px}.mobile-cta{position:fixed;bottom:0;left:0;right:0;z-index:20;display:flex;gap:10px;align-items:center;justify-content:space-between;background:#fffffff5;border-top:1px solid var(--line);padding:10px 16px calc(10px + env(safe-area-inset-bottom))}.mobile-cta>span{font-size:11px;color:var(--muted)}.mobile-cta .button{font-size:12px;white-space:nowrap;padding:12px}.dialog-inner{padding:40px 24px 26px}.dialog-inner .eyebrow{font-size:10px}.dialog-inner h2{font-size:26px}.photo-dialog{padding:12px}.photo-dialog img{height:calc(80dvh - 60px)}.photo-dialog p{font-size:12px}}
@media(max-width:375px){h1{font-size:41px}.hero-actions{gap:8px}.hero-actions .button{font-size:13px;padding:13px 12px;gap:9px}.hero-actions .text-link{font-size:12px;gap:6px}.play-small{width:24px;height:24px}.mobile-cta>span{font-size:10px}.mobile-cta{padding-left:12px;padding-right:12px}.film-view video{height:390px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}

.state-figure{position:relative}.state-figure.is-loading img{visibility:hidden}.state-figure.is-loading::before{content:'正在加载产品图片…';position:absolute;left:20px;right:20px;top:42%;text-align:center;font-size:13px;color:var(--muted)}

/* V12: long brand name retains mobile navigation space. */
.brand{flex-shrink:0}.brand>span{font-size:20px}.brand small{font-size:9px;letter-spacing:1px}
@media(max-width:430px){.brand>span{font-size:17px}.brand svg{width:28px;height:28px}.brand{gap:8px}}