:root{color-scheme:light;--paper:#fff8f2;--soft:#f4e7dc;--ink:#211b18;--muted:#71655e;--accent:#e86d32;--accent-deep:#a93613;--line:rgba(57,38,29,.14);--shadow:0 28px 80px rgba(87,45,22,.15);--sm:14px;--md:24px;--lg:38px;--page:min(1240px,calc(100vw - 48px));font-family:"Avenir Next","PingFang SC","Microsoft YaHei",sans-serif;font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:radial-gradient(circle at 80% 6%,rgba(255,157,99,.17),transparent 26%),var(--paper);overflow-x:hidden}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}button,a{-webkit-tap-highlight-color:transparent}h1,h2,p{margin-top:0}h1,h2{font-family:"Songti SC","STSong",serif;font-weight:900;letter-spacing:-.05em}h2 span,h1 span{color:var(--accent)}
.site-header{width:var(--page);height:76px;margin:auto;display:flex;align-items:center;justify-content:space-between;position:relative;z-index:10}.brand{display:inline-flex;align-items:center;gap:11px}.brand img{border-radius:12px;box-shadow:0 8px 24px rgba(144,66,25,.18)}.brand span{display:flex;align-items:baseline;gap:8px}.brand strong{font-size:18px;letter-spacing:.04em}.brand small{color:var(--muted);font-size:12px}nav{display:flex;align-items:center;gap:30px;font-size:14px}nav>a{color:var(--muted);transition:color .18s ease}nav>a:hover{color:var(--ink)}.language-switch{display:flex;padding:3px;border:1px solid var(--line);border-radius:999px}.language-switch button{min-width:34px;height:28px;border:0;border-radius:999px;background:transparent;color:var(--muted);font:700 11px/1 inherit;cursor:pointer}.language-switch button[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
.hero{width:var(--page);min-height:calc(100dvh - 76px);margin:auto;padding:22px 0 72px;display:grid;grid-template-columns:.92fr 1.08fr;align-items:center;gap:clamp(40px,5vw,78px)}.eyebrow{margin-bottom:22px;color:var(--accent-deep);font-size:13px;font-weight:800;letter-spacing:.1em}.hero h1{max-width:650px;margin-bottom:26px;font-size:clamp(47px,5vw,76px);line-height:1.03}.hero-lead{max-width:520px;margin-bottom:34px;color:var(--muted);font-size:clamp(16px,1.35vw,19px);line-height:1.75}.hero-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap}.button{display:inline-flex;min-height:50px;align-items:center;justify-content:center;padding:0 24px;border:1px solid transparent;border-radius:var(--sm);font:700 15px/1 inherit;white-space:nowrap;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease}.button-primary{background:var(--ink);color:#fffaf5;box-shadow:0 13px 28px rgba(41,28,21,.18)}.button-primary:not(:disabled):hover{transform:translateY(-2px)}.button-secondary{color:var(--ink);background:transparent;border-color:var(--line)}.button:disabled{cursor:not-allowed;opacity:.55;box-shadow:none}.text-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700}.text-link b{color:var(--accent);transition:transform .18s ease}.text-link:hover b{transform:translate(3px,3px)}.hero-stage{position:relative;overflow:hidden;border:1px solid rgba(111,69,45,.16);border-radius:var(--lg);box-shadow:var(--shadow);transform:rotate(.7deg)}.hero-stage img{width:100%}
.capability-intro{width:var(--page);margin:auto;padding:90px 0 36px;text-align:center;border-top:1px solid var(--line)}.capability-intro>p{color:var(--accent-deep);font-size:13px;font-weight:800;letter-spacing:.1em}.capability-intro h2{max-width:900px;margin:0 auto;font-size:clamp(40px,5vw,68px);line-height:1.08}
.feature{width:var(--page);margin:auto;padding:clamp(92px,11vw,150px) 0;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(340px,.9fr);align-items:center;gap:clamp(54px,7vw,108px)}.feature-reverse .feature-visual{order:2}.feature-reverse .feature-copy{order:1}.feature-visual{position:relative}.feature-visual:before{content:"";position:absolute;inset:8% -4% -7% 7%;border-radius:var(--lg);background:#f0d7c5;transform:rotate(2.5deg)}.feature-visual img{position:relative;z-index:1;width:100%;border-radius:var(--md);box-shadow:var(--shadow)}.feature-copy h2,.background-copy h2,.download h2{margin-bottom:24px;font-size:clamp(40px,4.6vw,66px);line-height:1.08}.feature-copy>p:not(.eyebrow),.background-copy>p:not(.eyebrow){color:var(--muted);font-size:17px;line-height:1.8}.feature-points{margin-top:34px;border-top:1px solid var(--line)}.feature-points article{display:grid;grid-template-columns:120px 1fr;gap:18px;padding:17px 0;border-bottom:1px solid var(--line)}.feature-points strong{font-size:14px}.feature-points span{color:var(--muted);font-size:14px;line-height:1.6}.three-points article{grid-template-columns:100px 1fr}
.background-feature{width:var(--page);margin:clamp(60px,8vw,110px) auto;padding:clamp(50px,7vw,86px);border-radius:var(--lg);background:#292522;color:#fff8f2;display:grid;grid-template-columns:.72fr 1.28fr;align-items:center;gap:clamp(42px,6vw,86px);overflow:hidden}.background-copy>p:not(.eyebrow){color:rgba(255,248,242,.65)}.plain-list{list-style:none;margin:30px 0 0;padding:0}.plain-list li{padding:13px 0;border-bottom:1px solid rgba(255,255,255,.12);color:rgba(255,248,242,.8);font-size:14px}.background-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;align-items:center}.background-gallery figure{margin:0;padding:12%;aspect-ratio:3/4;border-radius:var(--md);background-image:var(--bg-image);background-size:cover;background-position:center;box-shadow:0 24px 60px rgba(0,0,0,.3);display:flex;flex-direction:column;justify-content:center;gap:16px}.background-gallery figure:nth-child(2){transform:translateY(-24px)}.background-sample{display:grid;place-items:center;aspect-ratio:1/1.05;border-radius:14px;background:rgba(255,255,255,.87);box-shadow:0 12px 30px rgba(0,0,0,.2);overflow:hidden}.background-sample img{width:84%;filter:drop-shadow(0 8px 8px rgba(0,0,0,.14))}.background-gallery figcaption{font-size:12px;font-weight:700;text-align:center;text-shadow:0 1px 10px rgba(0,0,0,.5)}
.download{width:var(--page);margin:clamp(90px,12vw,160px) auto 70px;padding:clamp(48px,7vw,88px);border:1px solid var(--line);border-radius:var(--lg);background:linear-gradient(120deg,#f7dfcb,#fff8f2 52%,#f2e5d9);display:grid;grid-template-columns:.56fr 1.44fr;align-items:center;gap:70px}.download-mark{display:grid;place-items:center}.download-mark img{width:min(250px,100%);filter:drop-shadow(0 30px 35px rgba(115,57,25,.22));transform:rotate(-5deg)}.download-status{color:var(--muted);font-size:17px}.download-actions{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0 16px}.system-note{color:var(--muted);font-size:12px}
footer{width:var(--page);min-height:120px;margin:auto;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;color:var(--muted);font-size:12px}footer p{margin:0}footer p:last-child{text-align:right}.footer-brand strong{color:var(--ink);font-size:16px}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.2,1)}.reveal.is-visible{opacity:1;transform:translateY(0)}:focus-visible{outline:3px solid rgba(232,109,50,.5);outline-offset:4px}
@media(max-width:900px){:root{--page:min(100% - 32px,720px)}.hero{grid-template-columns:1fr;min-height:auto;padding:50px 0 90px}.hero-copy{max-width:660px}.hero-stage{width:94%;margin-left:auto}.feature,.background-feature,.download{grid-template-columns:1fr}.feature-reverse .feature-visual,.feature-reverse .feature-copy{order:initial}.background-gallery{max-width:620px}.download{gap:32px}.download-mark{justify-content:start}.download-mark img{width:170px}}
@media(max-width:640px){:root{--page:calc(100% - 28px);--lg:26px;--md:19px}.site-header{height:68px}.brand small{display:none}nav{gap:16px}.hero{padding-top:34px}.hero h1{font-size:clamp(44px,13vw,62px)}.hero-lead{font-size:16px}.hero-actions{align-items:flex-start;flex-direction:column}.capability-intro{padding-top:74px}.feature{padding:86px 0;gap:58px}.feature-copy h2,.background-copy h2,.download h2{font-size:clamp(38px,11vw,54px)}.feature-points article,.three-points article{grid-template-columns:1fr;gap:6px}.background-feature{padding:42px 22px}.background-gallery{gap:8px}.background-gallery figure{padding:8%;border-radius:16px}.background-gallery figcaption{font-size:10px}.download{padding:42px 24px}.download-actions{flex-direction:column}.download-actions .button{width:100%}footer{grid-template-columns:1fr;padding:34px 0}footer p:last-child{text-align:left}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition-duration:.01ms!important}.reveal{opacity:1;transform:none}}
/* Brand visuals stay light in both system appearances. */
.hero{grid-template-columns:1.06fr .94fr;gap:clamp(36px,4vw,64px)}
.hero h1{max-width:700px;margin-bottom:24px;font-size:clamp(44px,4.2vw,62px);line-height:1.02}
.feature-visual:before{background:#f0d7c5}.download{background:linear-gradient(120deg,#f7dfcb,#fff8f2 52%,#f2e5d9)}
@media(max-width:900px){.hero{grid-template-columns:1fr}}