:root{--bg:#fff;--bg-soft:#f5f5f7;--bg-tint:#fbfbfd;--text:#1d1d1f;--text-soft:#6e6e73;--line:#d2d2d7;--accent:#06c;--accent-hover:#0a84ff;--accent-button:#06c;--accent-button-hover:#0077ed;--control-bg:#f5f5f7b8;--control-active:#fff;--control-line:#3c3c432e;--control-hover:#7676801f;--control-shadow:#0000001f;--shadow-logo:#00000038;--shadow-icon:#00000029;--shadow-card:#0000001a;--sleep:#2e3b52;--twin:#e0452a;--feather:#1f7d53;--radius:22px;--radius-lg:28px;--pill:980px;--header-h:3.25rem;--maxw:1120px;--sans:-apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;color-scheme:light}:root[data-theme=dark]{--bg:#000;--bg-soft:#1c1c1e;--bg-tint:#101012;--text:#f5f5f7;--text-soft:#a1a1a6;--line:#3a3a3c;--accent:#2997ff;--accent-hover:#64b5ff;--accent-button:#0071e3;--accent-button-hover:#0077ed;--control-bg:#1c1c1e;--control-active:#3a3a3c;--control-line:#48484a;--control-hover:#2c2c2e;--control-shadow:#0000006b;--shadow-logo:#0000008c;--shadow-icon:#0000007a;--shadow-card:#0006;color-scheme:dark}@media (prefers-color-scheme:dark){:root:not([data-theme]){--bg:#000;--bg-soft:#1c1c1e;--bg-tint:#101012;--text:#f5f5f7;--text-soft:#a1a1a6;--line:#3a3a3c;--accent:#2997ff;--accent-hover:#64b5ff;--accent-button:#0071e3;--accent-button-hover:#0077ed;--control-bg:#1c1c1e;--control-active:#3a3a3c;--control-line:#48484a;--control-hover:#2c2c2e;--control-shadow:#0000006b;--shadow-logo:#0000008c;--shadow-icon:#0000007a;--shadow-card:#0006;color-scheme:dark}}*,:before,:after{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);min-height:100vh;color:var(--text);font-family:var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;font-size:17px;line-height:1.6}a{color:var(--accent);text-decoration:none}:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}.skip-link{z-index:40;background:var(--text);color:var(--bg);border-radius:10px;padding:.6rem .9rem;position:absolute;top:-4rem;left:1rem}.skip-link:focus{top:1rem}.site-header{z-index:30;min-height:var(--header-h);background:color-mix(in srgb, var(--bg) 72%, transparent);-webkit-backdrop-filter:saturate(180%)blur(20px);border-bottom:1px solid color-mix(in srgb, var(--line) 60%, transparent);justify-content:space-between;align-items:center;gap:1.5rem;padding:.5rem clamp(1.25rem,5vw,3rem);display:flex;position:sticky;top:0}.brand{color:var(--text);align-items:center;gap:.6rem;display:inline-flex}.brand-logo{width:2.25rem;height:2.25rem;box-shadow:0 1px 3px var(--shadow-icon);border-radius:10px;display:block}.brand-text{letter-spacing:-.01em;font-size:1.05rem;font-weight:600}.site-nav{flex-wrap:wrap;gap:.25rem 1.5rem;font-size:.9rem;display:flex}.site-nav a{color:var(--text-soft);transition:color .16s}.site-nav a:hover,.site-nav a.is-active{color:var(--text)}.header-actions,.preferences{align-items:center;display:flex}.header-actions{gap:clamp(1rem,3vw,2.25rem);min-width:0}.preferences{flex:none;gap:.55rem}.language-switcher{--language-pad:3px;isolation:isolate;min-width:6.75rem;padding:var(--language-pad);border:1px solid var(--control-line);border-radius:var(--pill);background:color-mix(in srgb, var(--text) 8%, var(--bg));display:flex;position:relative;box-shadow:inset 0 1px #ffffff59}.language-thumb{top:var(--language-pad);bottom:var(--language-pad);left:var(--language-pad);z-index:0;width:calc((100% - var(--language-pad) * 2) / 2);border-radius:var(--pill);background:var(--bg);box-shadow:0 1px 3px var(--control-shadow);pointer-events:none;transition:transform .28s cubic-bezier(.22,1,.36,1);position:absolute}.language-switcher[data-locale=zh] .language-thumb{transform:translate(100%)}.language-link{z-index:1;color:var(--text-soft);letter-spacing:.01em;white-space:nowrap;border-radius:var(--pill);flex:1;justify-content:center;align-items:center;min-height:1.7rem;padding:0 .7rem;font-size:.82rem;font-weight:600;transition:color .18s;display:inline-flex;position:relative}.language-link:hover,.language-link.is-active{color:var(--text)}.language-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.theme-toggle{border:1px solid var(--control-line);background:var(--control-bg);width:2.25rem;height:2.25rem;color:var(--text-soft);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;padding:0;transition:background .18s,border-color .18s,box-shadow .18s,color .18s,transform .18s;display:inline-flex;box-shadow:inset 0 1px #ffffff8c}.theme-toggle:hover{background:var(--control-hover);color:var(--text);transform:scale(1.05)}.theme-toggle:focus-visible{border-color:color-mix(in srgb, var(--accent) 58%, var(--control-line));box-shadow:0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);outline:none}.theme-toggle-icons{width:1.15rem;height:1.15rem;position:relative}.theme-icon{transform-origin:50%;width:1.15rem;height:1.15rem;transition:transform .42s cubic-bezier(.22,1,.36,1),opacity .24s;position:absolute;inset:0}.theme-icon[data-theme-icon=sun]{opacity:1;transform:rotate(0)scale(1)}.theme-icon[data-theme-icon=moon]{opacity:0;transform:rotate(-90deg)scale(.35)}:root[data-theme=dark] .theme-icon[data-theme-icon=sun]{opacity:0;transform:rotate(90deg)scale(.35)}:root[data-theme=dark] .theme-icon[data-theme-icon=moon]{opacity:1;transform:rotate(0)scale(1)}@media (prefers-color-scheme:dark){:root:not([data-theme]) .theme-icon[data-theme-icon=sun]{opacity:0;transform:rotate(90deg)scale(.35)}:root:not([data-theme]) .theme-icon[data-theme-icon=moon]{opacity:1;transform:rotate(0)scale(1)}}.visually-hidden{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.btn{border-radius:var(--pill);border:1px solid #0000;align-items:center;gap:.4rem;padding:.7rem 1.4rem;font-size:1rem;font-weight:500;line-height:1;transition:background .16s,color .16s,border-color .16s,transform .16s;display:inline-flex}.btn-primary{background:var(--accent-button);color:#fff}.btn-primary:hover{background:var(--accent-button-hover)}.btn-ghost{color:var(--accent);border-color:color-mix(in srgb, var(--accent) 35%, transparent);background:0 0}.btn-ghost:after{content:"›";font-size:1.15em;line-height:1;transition:transform .16s;transform:translateY(-1px)}.btn-ghost:hover{background:color-mix(in srgb, var(--accent) 8%, transparent);border-color:color-mix(in srgb, var(--accent) 55%, transparent)}.btn-ghost:hover:after{transform:translate(3px,-1px)}.hero{max-width:var(--maxw);text-align:center;background:radial-gradient(120% 90% at 50% -10%, var(--bg-tint) 0%, var(--bg) 60%);margin:0 auto;padding:clamp(3.5rem,9vw,7rem) clamp(1.25rem,5vw,3rem) clamp(3rem,7vw,5.5rem)}.hero-logo{width:clamp(84px,12vw,112px);height:auto;box-shadow:0 18px 40px var(--shadow-logo);border-radius:24px}.eyebrow{color:var(--text-soft);letter-spacing:.02em;margin:1.75rem 0 0;font-size:.95rem;font-weight:500}.hero h1{letter-spacing:-.025em;max-width:16ch;margin:.6rem auto 0;font-size:clamp(2.4rem,6.5vw,4.5rem);font-weight:700;line-height:1.06}html[lang=en] .hero h1{max-width:26ch}.lede{max-width:44rem;color:var(--text-soft);margin:1.5rem auto 0;font-size:clamp(1.05rem,2.2vw,1.3rem);line-height:1.5}.hero-actions{margin-top:2.25rem}.products{max-width:var(--maxw);scroll-margin-top:calc(var(--header-h) + 1rem);margin:0 auto;padding:clamp(2.5rem,6vw,4.5rem) clamp(1.25rem,5vw,3rem) clamp(3rem,7vw,5rem)}.section-head{text-align:center;margin-bottom:clamp(2rem,5vw,3.25rem)}.section-head h2{letter-spacing:-.02em;margin:0;font-size:clamp(1.8rem,4vw,2.75rem);font-weight:700}.section-head p{color:var(--text-soft);margin:.6rem 0 0;font-size:1.05rem}.product-card{background:var(--bg-soft);border-radius:var(--radius-lg);scroll-margin-top:calc(var(--header-h) + 1rem);grid-template-columns:minmax(200px,.72fr) minmax(0,1.6fr);align-items:center;gap:clamp(1.5rem,4vw,3.5rem);margin-bottom:1.75rem;padding:clamp(1.75rem,4vw,3rem);transition:transform .22s,box-shadow .22s;display:grid}.product-card:last-child{margin-bottom:0}.product-card:hover{box-shadow:0 22px 48px var(--shadow-card);transform:translateY(-4px)}.product-icon{place-items:center;width:100%;margin:0 auto;display:grid}.product-icon img{aspect-ratio:1;object-fit:cover;width:clamp(96px,60%,132px);height:auto;box-shadow:0 16px 32px var(--shadow-icon);border-radius:24%}.product-content{min-width:0}.product-kicker{color:var(--text-soft);letter-spacing:.02em;align-items:center;gap:.5rem;margin:0 0 .5rem;font-size:.85rem;font-weight:500;display:inline-flex}.product-index{color:var(--text);font-variant-numeric:tabular-nums;font-weight:700}.product-content h3{letter-spacing:-.02em;margin:0;font-size:clamp(1.6rem,3.2vw,2.25rem);font-weight:700}.product-tagline{color:var(--text);margin:.35rem 0 .9rem;font-size:clamp(1.05rem,2vw,1.25rem);font-weight:500}.product-desc{max-width:46rem;color:var(--text-soft);margin:0;font-size:1rem}.facts{gap:.55rem;margin:1.25rem 0 1.6rem;padding:0;list-style:none;display:grid}.facts li{color:var(--text);padding-left:1.6rem;font-size:.98rem;position:relative}.facts li:before{content:"";background:var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center / .7rem no-repeat;border-radius:50%;width:1.05rem;height:1.05rem;position:absolute;top:.5em;left:0;transform:translateY(-50%)}.site-footer{max-width:var(--maxw);border-top:1px solid var(--line);grid-template-columns:1fr auto auto;align-items:center;gap:1.5rem 2.5rem;margin:0 auto;padding:2.5rem clamp(1.25rem,5vw,3rem) 3rem;display:grid}.footer-brand{align-items:center;gap:.85rem;display:flex}.footer-brand .brand-logo{border-radius:11px;width:2.5rem;height:2.5rem}.footer-name{margin:0;font-weight:600}.footer-note{color:var(--text-soft);margin:.1rem 0 0;font-size:.9rem}.footer-links{flex-wrap:wrap;gap:.75rem 1.5rem;font-size:.92rem;display:flex}.footer-links a{color:var(--text-soft)}.footer-links a:hover{color:var(--text)}.copyright{color:var(--text-soft);margin:0;font-size:.88rem}.lost{max-width:var(--maxw);min-height:calc(100vh - var(--header-h) - 9rem);text-align:center;flex-direction:column;justify-content:center;align-items:center;margin:0 auto;padding:6vh clamp(1.25rem,5vw,3rem);display:flex}.lost .eyebrow{color:var(--accent);font-weight:600}.lost h1{letter-spacing:-.02em;margin:.4rem 0 .6rem;font-size:clamp(2.2rem,6vw,3.5rem);font-weight:700}.lost .lede{margin-bottom:2rem}@media (width<=820px){.product-card{text-align:center;grid-template-columns:1fr;justify-items:center}.product-icon{max-width:168px}.product-kicker{justify-content:center}.facts{text-align:left;display:inline-grid}.site-footer{text-align:center;grid-template-columns:1fr;justify-items:center}.footer-brand{text-align:center;flex-direction:column}}@media (width<=700px){.site-nav{display:none}}@media (width<=420px){.brand-text{display:none}.site-header{gap:1rem}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn,.btn-ghost:after,.theme-toggle,.theme-icon,.language-thumb,.product-card{transition:none}.product-card:hover,.theme-toggle:hover{transform:none}}@media (prefers-reduced-motion:no-preference){@supports (view-transition-name:root){::view-transition-old(root),::view-transition-new(root){mix-blend-mode:normal;animation:none}::view-transition-old(root){z-index:1}::view-transition-new(root){z-index:2}}}