:root{--brand:#9D2933;--brand-ink:#7C1F28;--brand-soft:#FBEDED;--bg:#fff;--surface:#F8F8F9;--line:#E5E7EB;--line-soft:#EEF0F3;--text:#1F2328;--muted:#6B7280;--radius:12px;--maxw:1120px}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--text);background:var(--bg);font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}button{font:inherit}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}.wrap>*{min-width:0}a:focus-visible,button:focus-visible{outline:2px solid var(--brand);outline-offset:4px}.skip-link{position:fixed;top:-60px;left:16px;z-index:100;background:#fff;border:1px solid var(--line);padding:8px 12px}.skip-link:focus{top:10px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line-soft)}
.nav{display:flex;align-items:center;height:62px;gap:28px}.logo,.f-brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:17px;letter-spacing:.2px;white-space:nowrap;flex:none}.logo-mark{width:32px;height:32px;display:block;flex:none;object-fit:contain}.f-brand .logo-mark{width:28px;height:28px}.nav-links{display:flex;gap:22px;margin-left:auto;font-size:14px;color:var(--muted);min-width:0}.nav-links a{white-space:nowrap}.nav-links a:hover,.nav-links a[aria-current=page]{color:var(--brand)}
.hero{padding:78px 0 58px;text-align:center;border-bottom:1px solid var(--line-soft)}.eyebrow{display:inline-block;font-size:13px;color:var(--brand);background:var(--brand-soft);border-radius:20px;padding:4px 14px;margin-bottom:22px}.hero h1,.page-hero h1{font-size:clamp(24px,3.2vw,32px);font-weight:600;letter-spacing:1px;line-height:1.45}.hero .roles{margin-top:14px;font-size:14px;color:var(--muted);letter-spacing:.5px}.hero .sub,.page-hero p{max-width:700px;margin:16px auto 0;color:var(--muted)}.hero-actions{display:flex;gap:12px;justify-content:center;margin-top:28px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:36px;padding:6px 16px;border-radius:8px;font-size:14px;border:1px solid var(--line);color:var(--text);background:#fff;transition:.15s}.btn:hover{border-color:var(--brand);color:var(--brand)}.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}.btn-primary:hover{background:var(--brand-ink);border-color:var(--brand-ink);color:#fff}.btn-lg{min-height:42px;padding:8px 22px;font-size:15px}.btn.disabled{color:#9CA3AF;background:#F3F4F6;border-color:var(--line);cursor:not-allowed}
.block{padding:58px 0;border-bottom:1px solid var(--line-soft);scroll-margin-top:62px}.stats-block{padding:36px 0}.block-surface{background:var(--surface)}.sec-head{margin-bottom:30px}.sec-head.center{text-align:center}.sec-head h2,.block h2{font-size:clamp(20px,2.2vw,23px);font-weight:600;letter-spacing:.5px}.sec-head p{margin-top:8px;color:var(--muted);font-size:14px}.kicker{font-size:12px;color:var(--brand);letter-spacing:1.5px;margin-bottom:8px}.lead{margin-top:14px;color:var(--muted);font-size:15px}
.stats{display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.stat{padding:22px 14px;text-align:center;border-right:1px solid var(--line);background:#fff}.stat:last-child{border-right:0}.stat b{display:block;font-size:22px;font-weight:600;color:var(--brand)}.stat span{display:block;margin-top:4px;font-size:13px;color:var(--muted)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}.steps{list-style:none;counter-reset:s;margin-top:6px}.steps li{counter-increment:s;position:relative;padding:9px 0 9px 34px;font-size:14px;color:var(--muted);border-bottom:1px dashed var(--line)}.steps li::before{content:counter(s);position:absolute;left:0;top:10px;width:22px;height:22px;border-radius:50%;background:var(--brand-soft);color:var(--brand);font-size:12px;display:flex;align-items:center;justify-content:center}.chips{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}.chip{font-size:13px;color:var(--muted);border:1px solid var(--line);border-radius:20px;padding:3px 12px;background:#fff}
.about-block{padding:48px 0}.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:stretch}.about-card{display:flex;min-width:0;flex-direction:column;padding:28px 30px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.about-card .lead{line-height:1.85}.about-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:auto;padding-top:20px}.about-facts span{min-width:0;padding:7px 10px;border-radius:8px;background:var(--surface);color:var(--muted);font-size:12px;text-align:center}.about-facts span:last-child{grid-column:1/-1}.about-summary{margin-top:10px;color:var(--muted);font-size:13px}.approach-card{background:linear-gradient(180deg,#fff 0%,#FFFBFB 100%)}.approach-card .steps{display:grid;gap:8px;margin-top:16px}.approach-card .steps li{min-height:47px;padding:11px 12px 11px 44px;border:1px solid var(--line-soft);border-radius:8px;background:#fff;line-height:1.7}.approach-card .steps li::before{left:12px;top:12px}
.grid3,.prod{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card,.prod-item,.q-item,.proj-card,.c-item,.download-card,.record{min-width:0;overflow-wrap:anywhere;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}.card:hover,.prod-item:hover,.proj-card:hover{border-color:var(--brand)}.card h3,.prod-item h3{font-size:17px;font-weight:600}.card-lead{margin-top:6px;font-size:14px;color:var(--brand)}.card ul{list-style:none;margin-top:16px}.card li{position:relative;padding-left:16px;font-size:14px;color:var(--muted);margin-bottom:7px}.card li::before{content:"";position:absolute;left:0;top:11px;width:5px;height:5px;border-radius:50%;background:var(--brand)}
.prod-item{display:flex;flex-direction:column}.prod-item .plat,.download-card .plat{font-size:12px;color:var(--muted);letter-spacing:.5px}.prod-item h3{margin-top:4px}.prod-item h3 small,.download-card h2 small,.product-page-hero h1 small{display:block;margin-top:2px;font-size:13px;font-weight:400;color:var(--muted)}.prod-item>p{margin-top:10px;font-size:14px;color:var(--muted);flex:1}.product-card-footer{display:flex;min-height:132px;flex-direction:column;margin-top:16px;padding-top:16px;border-top:1px solid var(--line-soft)}.product-card-footer .card-more{margin-top:auto}.card-more{display:inline-flex;gap:8px;align-items:center;margin-top:18px;font-size:14px;color:var(--brand)}.prod-foot{margin-top:22px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;background:var(--brand-soft);border-radius:var(--radius);padding:18px 22px}.prod-foot p{font-size:14px}.product-actions{display:flex;align-items:center;gap:15px;flex-wrap:wrap}.product-console-entry{font-size:12px;color:var(--muted)}.product-console-entry:hover{color:var(--brand)}
.chain{display:grid;grid-template-columns:repeat(5,1fr)}.chain-step{padding:22px 18px;background:#fff;border:1px solid var(--line);text-align:center}.chain-step:first-child{border-radius:12px 0 0 12px}.chain-step:last-child{border-radius:0 12px 12px 0}.chain-step+.chain-step{border-left:0}.chain-step h3{font-size:15px;font-weight:600}.chain-step p{margin-top:6px;font-size:13px;color:var(--muted)}.chain-step>span{font-size:12px;color:var(--brand)}
.qual{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.q-item h3{font-size:15px;font-weight:600;display:flex;align-items:center;gap:8px}.q-item .dot{width:8px;height:8px;border-radius:2px;background:var(--brand)}.q-item p{margin-top:8px;font-size:13px;color:var(--muted)}.q-item .no{margin-top:10px;font-size:12px;background:var(--surface);border-radius:6px;padding:6px 9px;display:inline-block}
.proj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.proj-card{display:flex;flex-direction:column}.proj-top{display:flex;justify-content:space-between;gap:10px;font-size:12px;color:var(--muted)}.proj-card h3{margin-top:10px;font-size:15px;font-weight:600;line-height:1.65;flex:1}.proj-card p{margin-top:14px;font-size:12px;color:var(--muted)}
.c-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.c-item span{display:block;font-size:13px;color:var(--muted)}.c-item b{display:block;margin-top:6px;font-size:15px;font-weight:500}.c-item a:hover{color:var(--brand)}
.page-hero{padding:64px 0 46px;text-align:center;border-bottom:1px solid var(--line-soft)}.page-hero .eyebrow{margin-bottom:16px}.product-page-hero .hero-actions{margin-top:22px}.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.feature-grid article{padding:24px;background:#fff;border-right:1px solid var(--line)}.feature-grid article:last-child{border-right:0}.feature-grid span{font-size:12px;color:var(--brand)}.feature-grid h3{font-size:16px;margin-top:12px}.feature-grid p{font-size:13px;color:var(--muted);margin-top:8px}.source-note{margin-top:18px;color:var(--muted);font-size:13px}.record+.record{margin-top:12px}.record b{font-size:14px}.record p{font-size:13px;color:var(--muted);margin-top:5px}.record a{font-size:13px;color:var(--brand)}.contact-card{display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center}.contact-card p{color:var(--muted);margin-top:6px}.contact-card>div:last-child{display:grid;gap:4px;text-align:right;color:var(--brand)}
.download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.download-card h2{font-size:18px;margin-top:5px}.release-empty{margin:18px 0;padding:14px;background:var(--surface);border-radius:8px}.release-empty b{font-size:13px}.release-empty p{font-size:12px;color:var(--muted);margin-top:4px}.download-note{margin-top:22px;border:1px solid var(--line);border-radius:var(--radius);padding:18px 22px;display:grid;grid-template-columns:130px 1fr;gap:20px}.download-note p{font-size:13px;color:var(--muted)}
footer{padding:34px 0 40px;background:var(--surface);font-size:13px;color:var(--muted)}.f-top{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}.f-brand{color:var(--text);font-size:15px}.f-top>div>p{margin-top:10px}.f-links{display:flex;gap:18px;flex-wrap:wrap}.f-links a:hover{color:var(--brand)}.f-bottom{margin-top:20px;padding-top:16px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}.login-placeholder{max-width:520px;margin:0 auto;padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;text-align:center}.login-placeholder .btn{margin-top:22px}
@media(max-width:1080px){.nav{gap:16px}.nav-links{flex:1;gap:4px;overflow-x:auto;scrollbar-width:none}.nav-links::-webkit-scrollbar{display:none}.nav-links a{display:flex;align-items:center;min-height:42px;padding:6px 12px;border-radius:8px;background:var(--surface)}.stats{grid-template-columns:repeat(5,minmax(0,1fr))}.stat{padding:18px 8px}.chain{grid-template-columns:repeat(2,1fr);gap:12px}.chain-step,.chain-step:first-child,.chain-step:last-child{border:1px solid var(--line);border-radius:12px}.qual{grid-template-columns:repeat(2,1fr)}.feature-grid{grid-template-columns:repeat(2,1fr)}.feature-grid article:nth-child(2){border-right:0}.feature-grid article:nth-child(-n+2){border-bottom:1px solid var(--line)}}
@media(max-width:900px){.split,.about-grid{grid-template-columns:1fr;gap:18px}.grid3,.prod,.download-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.proj-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.wrap{padding:0 16px}.nav{height:56px;gap:12px}.logo{font-size:15px;gap:8px}.logo-mark{width:27px;height:27px}.f-brand .logo-mark{width:25px;height:25px}.nav-links{font-size:13px}.hero{padding:34px 0 32px}.hero h1,.page-hero h1{font-size:26px}.hero .sub,.page-hero p{text-align:left}.hero-actions{display:grid;grid-template-columns:1fr;gap:10px;margin-top:22px}.hero-actions .btn{width:100%}.block{padding:34px 0}.about-block{padding:28px 0}.about-card{padding:22px 20px}.about-facts{grid-template-columns:1fr}.about-facts span:last-child{grid-column:auto}.stats{grid-template-columns:repeat(2,minmax(0,1fr))}.stat{padding:16px 10px;border-right:0;border-bottom:1px solid var(--line)}.stat:nth-child(odd):not(:last-child){border-right:1px solid var(--line)}.stat:last-child{grid-column:1/-1;border-bottom:0}.grid3,.prod,.c-grid,.proj-grid,.download-grid,.feature-grid{grid-template-columns:1fr}.card,.prod-item,.q-item,.proj-card,.c-item,.download-card{padding:20px}.prod-foot{display:block}.prod-foot .btn{width:100%;margin-top:12px}.chain{grid-template-columns:1fr}.chain-step{text-align:left}.qual{grid-template-columns:1fr}.feature-grid article{border-right:0;border-bottom:1px solid var(--line)}.feature-grid article:last-child{border-bottom:0}.contact-card{grid-template-columns:1fr}.contact-card>div:last-child{text-align:left}.download-note{grid-template-columns:1fr}.f-links{gap:4px 16px}.f-links a{display:inline-flex;align-items:center;min-height:44px}.f-bottom{display:block;font-size:12px}.f-bottom span{display:block;margin-top:6px}footer{padding:28px 0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
.menu-button{display:none;width:38px;height:38px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--text);font-size:20px;cursor:pointer}.product-card-top,.feature-state{display:flex;align-items:center;justify-content:space-between;gap:12px}.availability,.feature-state b{font-size:11px;font-weight:500;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:4px 9px;white-space:nowrap}.product-status{font-size:12px!important;color:var(--brand)!important}.help-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.help-card{display:flex;flex-direction:column;min-height:180px;padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.help-card h2{font-size:17px}.help-card p{flex:1;margin-top:10px;color:var(--muted);font-size:13px;line-height:1.7}
.product-download{display:flex;flex-direction:column;align-items:flex-start;gap:7px;min-width:0}.product-download .btn{width:auto;align-self:flex-start}.hero-actions .product-download{margin-top:0}.hero-actions:has(.product-download){align-items:flex-start}.release-brief{display:flex;min-height:21px;flex-wrap:wrap;align-items:baseline;gap:4px 8px;color:var(--muted);font-size:12px;line-height:1.5}.release-brief b{font-weight:500;color:var(--text)}.release-brief p{margin:0;font-size:12px}.release-license{font-size:12px;color:var(--muted);overflow-wrap:anywhere;text-align:left}.release-license summary{cursor:pointer}.release-license .card-more{margin-top:8px;font-size:12px}.release-license p{font-size:11px;margin-top:6px}.product-download>span,.product-download>div{max-width:100%}
@media(max-width:900px){.help-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.nav{position:relative}.menu-button{display:grid;place-items:center;margin-left:auto}.nav-links{display:none;position:absolute;top:52px;left:16px;right:16px;z-index:80;margin:0;padding:10px;border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:0 18px 45px rgba(31,35,41,.14);overflow:visible}.nav-links.open{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.nav-links a{background:transparent}.help-grid{grid-template-columns:1fr}.product-card-footer{min-height:0}.product-card-footer .card-more{margin-top:18px}}