:root{--bg: #f6f4f1;--surface: #ffffff;--ink: #1a1714;--ink-dim: #5f574e;--ink-faint: #756b60;--line: #e8e3dc;--line-strong: #d6cfc6;--brand: #f05a1c;--brand-ink: #c23b05;--brand-btn: #d13d06;--brand-soft: #fdf0e8;--amber: #a06d00;--amber-ink: #7a5200;--amber-btn: #8a5f00;--amber-soft: #faf3e2;--steel: #1f5567;--steel-soft: #eaf2f4;--fs-micro: .75rem;--fs-xs: .8125rem;--fs-sm: .875rem;--fs-body: 1rem;--fs-lead: 1.0625rem;--fs-h3: 1.125rem;--fs-h2: clamp(1.5rem, 1.32rem + .75vw, 2rem);--fs-display: clamp(2rem, 1.55rem + 2.1vw, 3.25rem);--sp-1: .25rem;--sp-2: .5rem;--sp-3: .75rem;--sp-4: 1rem;--sp-6: 1.5rem;--sp-8: 2rem;--sp-10: 2.5rem;--sp-12: 3rem;--sp-16: 4rem;--sp-20: 5rem;--sp-24: 6rem;--font-cn: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", system-ui, -apple-system, sans-serif;--font-num: "Helvetica Neue", Helvetica, Arial, var(--font-cn);--ease: cubic-bezier(.2, .8, .2, 1);--rad: 12px;--maxw: 1200px;--gutter: 24px;--shadow: 0 12px 32px -16px rgba(26, 23, 20, .22);--shadow-hover: 0 18px 40px -20px rgba(26, 23, 20, .28);--section-y: clamp(4rem, 3rem + 3.4vw, 6rem)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:var(--font-cn);background:var(--bg);color:var(--ink);font-size:var(--fs-body);line-height:1.75;letter-spacing:.01em;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}::selection{background:var(--brand-soft);color:var(--brand-ink)}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button{font-family:inherit}:focus-visible{outline:2px solid var(--brand-ink);outline-offset:3px;border-radius:4px}h1,h2,h3{text-wrap:balance}p{text-wrap:pretty}.wrap{width:min(var(--maxw),100% - var(--gutter) * 2);margin-inline:auto}section{padding-block:var(--section-y)}.sec-tight{padding-block:clamp(3rem,2.4rem + 2vw,4rem)}.kicker{display:inline-flex;align-items:center;gap:8px;font-size:var(--fs-micro);font-weight:600;letter-spacing:.16em;color:var(--brand-ink);margin-bottom:var(--sp-3)}.kicker:before{content:"";width:16px;height:1.5px;background:currentColor}.kicker.amber{color:var(--amber-ink)}.kicker.steel{color:var(--steel)}.h2{font-size:var(--fs-h2);font-weight:600;line-height:1.42;letter-spacing:.005em}.lede{font-size:var(--fs-lead);line-height:1.72;color:var(--ink-dim);margin-top:var(--sp-3);max-width:60ch}.sec-head{margin-bottom:var(--sp-10)}.sec-head .lede{margin-top:var(--sp-3)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:46px;padding:0 24px;border-radius:10px;border:1px solid transparent;font-size:var(--fs-sm);font-weight:600;letter-spacing:.01em;cursor:pointer;white-space:nowrap;transition:background .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease)}.btn .arr{transition:transform .18s var(--ease);font-size:.95em}.btn:hover .arr{transform:translate(3px)}.btn-primary{background:var(--brand-btn);color:#fff;box-shadow:0 6px 18px -8px #d13d0680}.btn-primary:hover{background:#b83404;transform:translateY(-1px);box-shadow:0 10px 24px -10px #d13d068c}.btn-outline{background:var(--surface);border-color:var(--line-strong);color:var(--ink)}.btn-outline:hover{border-color:var(--ink-dim);background:#fff}.btn-amber{background:var(--amber-btn);color:#fff;box-shadow:0 6px 18px -8px #8a5f0073}.btn-amber:hover{background:#6f4c00;transform:translateY(-1px)}.nav{position:fixed;inset:0 0 auto;z-index:50;background:#f6f4f1e0;backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid transparent;transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)}.nav.is-scrolled{background:#f6f4f1f7;border-color:var(--line);box-shadow:0 8px 24px -20px #1a17144d}.nav-in{width:min(var(--maxw),100% - var(--gutter) * 2);margin-inline:auto;display:flex;align-items:center;gap:var(--sp-8);height:72px}.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}.logo img{width:36px;height:36px;border-radius:8px}.logo span{font-size:1rem;font-weight:600;letter-spacing:.02em;line-height:1.2}.logo small{display:block;font-size:.5625rem;font-weight:500;letter-spacing:.18em;color:var(--ink-faint);margin-top:2px}.nav-links{display:flex;gap:var(--sp-8);margin-left:auto;list-style:none}.nav-links a{position:relative;display:block;padding-block:12px;font-size:var(--fs-sm);color:var(--ink-dim);transition:color .16s}.nav-links a:after{content:"";position:absolute;inset:auto 0 5px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .26s var(--ease)}.nav-links a[aria-current=location]{color:var(--brand-ink)}.nav-links a[aria-current=location]:after,.nav-links a:focus-visible:after{transform:scaleX(1)}.nav-links a:hover{color:var(--ink)}.nav-cta{display:flex;align-items:center;gap:10px;flex-shrink:0}.nav-cta .btn{min-height:40px;padding:0 18px;font-size:var(--fs-xs)}.burger{display:none;margin-left:auto;width:40px;height:40px;border-radius:8px;border:1px solid var(--line-strong);background:var(--surface);color:var(--ink);font-size:1rem;cursor:pointer}.mobile-menu{display:none;position:fixed;inset:72px 0 auto;z-index:49;max-height:calc(100dvh - 72px);overflow-y:auto;overscroll-behavior:contain;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .18s ease,transform .22s var(--ease),visibility 0s .22s;background:var(--bg);border-bottom:1px solid var(--line);padding:var(--sp-2) var(--gutter) var(--sp-6)}.mobile-menu.open{opacity:1;visibility:visible;transform:none;transition-delay:0s}.mobile-menu a.m-link{display:flex;align-items:center;justify-content:space-between;padding:14px 4px;font-size:var(--fs-body);border-bottom:1px solid var(--line)}.mobile-menu .btn{width:100%;margin-top:12px}.hero{padding-top:136px;padding-bottom:var(--sp-8)}.hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:var(--sp-12);align-items:center}.hero h1{font-size:var(--fs-display);font-weight:600;line-height:1.26;letter-spacing:.005em}.hero h1 em{font-style:normal;color:var(--brand-ink)}.hero .sub{font-size:var(--fs-lead);line-height:1.75;color:var(--ink-dim);margin-top:var(--sp-4);max-width:52ch}.hero .sub strong{color:var(--ink);font-weight:600}.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:var(--sp-8)}.hero-side{display:grid;gap:12px}.prod-chip{display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--rad);padding:20px 22px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease)}.prod-chip:is(:hover,:focus-visible){border-color:var(--brand);box-shadow:var(--shadow);transform:translateY(-2px)}.prod-chip .mark{width:40px;height:40px;border-radius:9px;flex-shrink:0;display:grid;place-items:center;color:#fff;font-size:15px;font-weight:600}.prod-chip .mark.o{background:var(--brand-btn)}.prod-chip .mark.a{background:var(--amber-btn)}.prod-chip b{display:block;font-size:var(--fs-sm);font-weight:600;line-height:1.5}.prod-chip small{display:block;font-size:var(--fs-xs);color:var(--ink-faint);line-height:1.6;margin-top:2px}.carousel{position:relative;margin-top:var(--sp-12);padding:var(--sp-6) var(--sp-8);border:1px solid var(--line);border-radius:var(--rad);background:var(--surface)}.car-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;column-gap:var(--sp-4);row-gap:var(--sp-2);padding-bottom:var(--sp-3);border-bottom:1px solid var(--line)}.car-title{font-size:var(--fs-xs);font-weight:600;color:var(--ink-dim)}.car-viewport{padding-top:var(--sp-6);touch-action:pan-y pinch-zoom}.car-track{display:grid}.slide{grid-area:1 / 1;min-width:0;visibility:hidden}.slide[aria-hidden=false]{visibility:visible}.slide-text{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:var(--sp-12);align-items:start}.slide-detail{display:flex;flex-direction:column;align-items:flex-start}.slide-meta{display:flex;flex-wrap:wrap;align-items:center;gap:var(--sp-3);margin-bottom:var(--sp-3)}.slide-meta .cat{font-size:var(--fs-micro);font-weight:600;letter-spacing:.06em;color:var(--brand-ink);background:var(--brand-soft);padding:4px 10px;border-radius:6px}.slide-meta .cat.amber{color:var(--amber-ink);background:var(--amber-soft)}.slide-meta .cat.steel{color:var(--steel);background:var(--steel-soft)}.slide-meta time{font-size:var(--fs-micro);color:var(--ink-faint);font-variant-numeric:tabular-nums}.slide-text h3{font-size:1.25rem;font-weight:600;line-height:1.5}.slide-text p{font-size:var(--fs-sm);line-height:1.75;color:var(--ink-dim)}.slide-text .more{display:inline-flex;align-items:center;gap:var(--sp-2);min-height:44px;margin-top:var(--sp-2);font-size:var(--fs-xs);font-weight:600;color:var(--brand-ink)}.slide-text .more:hover{text-decoration:underline;text-underline-offset:3px}.car-ctrl{display:flex;align-items:center;gap:var(--sp-1)}.car-btn{width:44px;height:44px;border-radius:8px;flex-shrink:0;border:1px solid transparent;background:transparent;color:var(--ink-dim);font-size:14px;display:grid;place-items:center;transition:color .16s,border-color .16s,background .16s,transform .16s}.dots{display:flex;align-items:center}.dot{position:relative;width:32px;height:44px;padding:0;border:none;border-radius:6px;background:transparent;font-size:var(--fs-xs);font-variant-numeric:tabular-nums;color:var(--ink-faint);cursor:pointer;display:grid;place-items:center}.dot:after{content:"";position:absolute;bottom:4px;width:12px;height:2px;border-radius:2px;background:currentColor;transform:scaleX(0);transition:transform .26s var(--ease),background .2s}.dot[aria-current=true]{color:var(--brand-ink);font-weight:600}.dot[aria-current=true]:after{transform:scaleX(1)}.dot:is(:hover,:focus-visible){color:var(--brand-ink);background:var(--brand-soft)}.twin{display:grid;grid-template-columns:1fr 1fr;gap:20px}.twin-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--rad);padding:32px;display:flex;flex-direction:column;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease)}.twin-card:is(:hover,:focus-within){border-color:var(--line-strong);box-shadow:var(--shadow)}.twin-card .num{font-family:var(--font-num);font-size:var(--fs-micro);font-weight:600;letter-spacing:.14em;color:var(--ink-faint)}.twin-card h3{font-size:1.3125rem;font-weight:600;line-height:1.45;margin-top:12px}.twin-card .bar{width:32px;height:2px;border-radius:2px;margin-top:14px}.twin-card.a .bar{background:var(--brand-btn)}.twin-card.b .bar{background:var(--amber-btn)}.twin-card p{font-size:var(--fs-sm);line-height:1.78;color:var(--ink-dim);margin-top:16px}.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}.tags span{font-size:var(--fs-micro);color:var(--ink-dim);border:1px solid var(--line);border-radius:6px;padding:4px 10px}.twin-card .btn{margin-top:28px;align-self:flex-start}.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.fstep{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--rad);padding:24px}.fstep .no{display:inline-block;font-family:var(--font-num);font-size:var(--fs-micro);font-weight:600;color:var(--amber-ink);background:var(--amber-soft);border-radius:6px;padding:3px 8px;letter-spacing:.04em}.fstep b{display:block;margin-top:14px;font-size:var(--fs-body);font-weight:600;line-height:1.5}.fstep small{display:block;margin-top:6px;font-size:var(--fs-xs);line-height:1.7;color:var(--ink-dim)}.sub-head{display:flex;align-items:baseline;justify-content:space-between;gap:var(--sp-4);margin-top:var(--sp-12);margin-bottom:14px}.sub-head .t{display:inline-flex;align-items:center;gap:8px;font-size:var(--fs-xs);font-weight:600}.sub-head .t:before{content:"";width:5px;height:5px;border-radius:50%;background:var(--amber)}.sub-head .n{font-size:var(--fs-micro);color:var(--ink-faint)}.industries{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.ind{background:var(--surface);border:1px solid var(--line);border-radius:var(--rad);padding:24px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease)}.ind:hover{border-color:var(--line-strong)}.ind b{font-size:var(--fs-h3);font-weight:600;line-height:1.5}.ind small{display:block;margin-top:8px;font-size:var(--fs-xs);line-height:1.72;color:var(--ink-dim)}.ind .ord{margin-top:16px;padding:10px 12px;border-radius:8px;background:var(--amber-soft);border:1px solid #f0e4c8;font-size:var(--fs-xs);line-height:1.65;color:var(--amber-ink)}.ind .ord b{display:block;font-size:.6875rem;font-weight:600;letter-spacing:.1em;color:var(--amber);margin-bottom:2px}.join-band{margin-top:var(--sp-12);background:var(--surface);border:1px solid var(--line);border-radius:var(--rad);padding:32px;display:flex;align-items:center;justify-content:space-between;gap:var(--sp-8);flex-wrap:wrap}.join-band h3{font-size:1.1875rem;font-weight:600;line-height:1.5}.join-band p{font-size:var(--fs-sm);line-height:1.75;color:var(--ink-dim);margin-top:8px;max-width:62ch}.join-band .btn{flex-shrink:0}.relay{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:var(--sp-16);align-items:start}.relay .h2{margin-top:4px}.relay-feats{list-style:none;display:grid;gap:24px;margin-top:var(--sp-8)}.rf{display:flex;gap:14px}.rf .ic{width:38px;height:38px;flex-shrink:0;border-radius:9px;background:var(--steel-soft);color:var(--steel);display:grid;place-items:center}.rf b{display:block;font-size:var(--fs-sm);font-weight:600;line-height:1.5}.rf p{font-size:var(--fs-xs);line-height:1.72;color:var(--ink-dim);margin-top:4px}.model-board{background:var(--surface);border:1px solid var(--line);border-radius:var(--rad);padding:28px}.mb-group+.mb-group{margin-top:24px}.mb-group h4{font-size:var(--fs-micro);font-weight:600;letter-spacing:.14em;color:var(--steel);margin-bottom:12px}.chips{display:flex;flex-wrap:wrap;gap:8px}.chip{font-size:var(--fs-xs);line-height:1.4;color:var(--ink-dim);border:1px solid var(--line);border-radius:6px;padding:6px 12px;background:#fbfaf8}.chip.more{border-style:dashed;color:var(--ink-faint);background:transparent}.stats{border-block:1px solid var(--line)}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.stat b{display:block;font-family:var(--font-num);font-size:clamp(1.75rem,1.45rem + 1.2vw,2.5rem);font-weight:600;letter-spacing:-.01em;line-height:1.2;font-variant-numeric:tabular-nums}.stat b i{font-style:normal;color:var(--brand);margin-left:2px}.stat span{display:block;font-size:var(--fs-xs);color:var(--ink-dim);margin-top:6px}.final{text-align:center;padding-block:clamp(4rem,3rem + 4vw,7rem)}.final .h2{font-size:clamp(1.625rem,1.3rem + 1.6vw,2.25rem)}.final .lede{margin-inline:auto}.final .hero-cta{justify-content:center}footer{border-top:1px solid var(--line);padding-block:56px 28px}.foot-grid{display:grid;grid-template-columns:1.8fr 1fr 1fr 1fr;gap:40px}.foot-grid h2{font-size:var(--fs-xs);font-weight:600;color:var(--ink);margin-bottom:14px}.foot-grid ul{list-style:none;display:grid;gap:10px}.foot-grid a{font-size:var(--fs-xs);color:var(--ink-dim);transition:color .16s}.foot-grid a:hover{color:var(--ink)}.foot-brand p{font-size:var(--fs-xs);line-height:1.75;color:var(--ink-faint);margin-top:16px;max-width:32ch}.foot-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:var(--fs-micro);color:var(--ink-faint)}@media(max-width:1000px){.hero-grid,.relay{grid-template-columns:1fr;gap:var(--sp-10)}.slide-text{gap:var(--sp-6)}.flow,.industries{grid-template-columns:repeat(2,1fr)}}@media(max-width:880px){:root{--gutter: 20px}.nav-links,.nav-cta{display:none}.burger{display:grid;place-items:center}.mobile-menu{display:block}.twin{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr);gap:28px 24px}.join-band{padding:24px}}@media(max-width:600px){:root{--fs-lead: 1rem}.flow,.industries{grid-template-columns:1fr}.foot-grid{grid-template-columns:1fr 1fr;gap:28px}.final .hero-cta .btn{width:100%}.hero-cta .btn{flex:1 1 100%}.carousel{padding:var(--sp-4)}.car-ctrl{gap:0}.dot{width:28px}.slide-text{grid-template-columns:1fr;gap:var(--sp-4)}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}[id]{scroll-margin-top:92px}.nav-in>nav{margin-left:auto}.nav-in>.nav-cta{margin-left:auto}.legal-links{display:flex;flex-wrap:wrap;gap:16px 24px;margin-top:32px;font-size:var(--fs-xs);color:var(--ink-dim)}.legal-links a:hover,.foot-bottom a:hover{text-decoration:underline}.car-btn{cursor:pointer}.car-pause[aria-pressed=true]{background:var(--brand-soft);color:var(--brand-ink)}.car-pause-symbol{display:block;width:16px;height:16px;fill:currentColor}.skip-link{position:fixed;top:8px;left:8px;padding:12px;background:var(--surface);z-index:100;transform:translateY(-160%)}.skip-link:focus{transform:none}.legal-page{min-height:72svh;padding:120px 0 80px}.legal-shell{max-width:820px}.back-link{display:inline-flex;margin-bottom:24px;color:var(--ink-dim);font-size:var(--fs-sm)}.legal-shell h1{font-size:var(--fs-h2);line-height:1.4}.legal-updated{margin-top:16px;color:var(--ink-dim)}.legal-note{margin-top:32px;border-left:3px solid var(--brand);background:var(--brand-soft);padding:18px 20px}.legal-sections{display:grid;gap:32px;margin-top:40px}.legal-sections section{border-top:1px solid var(--line);padding:24px 0 0}.legal-sections h2{font-size:22px}.legal-sections p,.legal-sections li{color:var(--ink-dim);line-height:1.8;margin-top:12px}.legal-sections ul{padding-left:20px}@media(min-width:881px){.mobile-menu{display:none}}@media(max-width:600px){.foot-brand{grid-column:1 / -1}.hero{padding-top:96px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}.burger-lines{position:relative;width:17px;height:12px}.burger-lines span{position:absolute;left:0;width:17px;height:1.5px;background:currentColor;transform-origin:center;transition:transform .22s var(--ease)}.burger-lines span:first-child{top:2px}.burger-lines span:last-child{bottom:2px}.burger[aria-expanded=true] .burger-lines span:first-child{transform:translateY(3.25px) rotate(45deg)}.burger[aria-expanded=true] .burger-lines span:last-child{transform:translateY(-3.25px) rotate(-45deg)}.mobile-menu .m-link span{color:var(--ink-faint);transition:transform .18s var(--ease)}.mobile-menu .m-link[aria-current=location]{color:var(--brand-ink)}.mobile-menu .m-link:is(:hover,:focus-visible) span{transform:translate(2px,-2px)}.btn:active,.car-btn:active,.prod-chip:active{transform:translateY(1px) scale(.985)}.btn:focus-visible .arr{transform:translate(3px)}.car-btn:is(:hover,:focus-visible){background:var(--brand-soft);border-color:var(--brand);color:var(--brand-ink)}.prod-chip-arrow{margin-left:auto;padding-left:8px;color:var(--ink-faint);transition:color .18s,transform .24s var(--ease)}.prod-chip:is(:hover,:focus-visible) .prod-chip-arrow{color:var(--brand-ink);transform:translateY(4px)}.slide-text .more{align-self:flex-start}.more span{display:inline-block;transition:transform .18s var(--ease)}.more:is(:hover,:focus-visible) span{transform:translate(4px)}main[tabindex="-1"]:focus,section[tabindex="-1"]:focus{outline:none}.carousel{--news-offset: 12px}.carousel[data-direction=previous]{--news-offset: -12px}@media(prefers-reduced-motion:no-preference){.slide[aria-hidden=false] .slide-text>*{animation:news-text-in .42s cubic-bezier(.16,1,.3,1) both}.slide[aria-hidden=false] .slide-detail{animation-delay:65ms}@keyframes news-text-in{0%{opacity:.45;transform:translate(var(--news-offset))}to{opacity:1;transform:none}}}@media(min-width:1001px){.fstep:not(:last-child):after{content:"";position:absolute;right:-17px;top:40px;width:16px;height:1px;background:var(--amber);transform-origin:left}}@media(min-width:1001px)and (prefers-reduced-motion:no-preference){.flow[data-entered=true] .fstep:after{animation:process-connect .44s var(--ease) both}.flow[data-entered=true] .fstep:nth-child(2):after{animation-delay:.1s}.flow[data-entered=true] .fstep:nth-child(3):after{animation-delay:.2s}@keyframes process-connect{0%{transform:scaleX(0)}to{transform:scaleX(1)}}}@media(prefers-reduced-motion:reduce){.btn,.prod-chip,.more span,.prod-chip-arrow,.mobile-menu{transform:none!important}}