/* T42 revision: product-led homepage, sharing the existing Aurora product shell. */
.product-home { background:var(--cxy-surface-page); }
.product-home #caixiaoyun-ai,.product-home #tax-wuyou { scroll-margin-top:88px; }
.ph-hero { position:relative; isolation:isolate; overflow:hidden; background:var(--cxy-tint-blue-bg); }
.ph-hero-image { position:absolute; inset:0; width:100%; height:100%; object-fit:cover; object-position:center; z-index:-1; }
.ph-hero-inner { min-height:640px; display:flex; align-items:center; position:relative; padding-top:64px; padding-bottom:64px; }
.ph-hero-copy { width:52%; max-width:640px; }
.ph-product-name { color:var(--cxy-action); font-weight:700; font-size:20px; margin:28px 0 12px; }
.ph-hero h1 { font-size:clamp(48px,5.4vw,76px); font-weight:900; letter-spacing:-.035em; line-height:1.13; margin:0 0 28px; color:var(--cxy-ink); }
.ph-hero h1 span { color:var(--cxy-action); }
.ph-lead { font-size:20px; line-height:1.85; color:var(--cxy-text); margin:0; }
.ph-actions { display:flex; flex-wrap:wrap; gap:12px; margin-top:32px; }
.ph-actions .btn { gap:12px; }
.ph-hero-note { margin:28px 0 0; color:var(--cxy-muted); font-size:14px; line-height:1.8; }
.ph-hero-note a { color:var(--cxy-action); display:inline-flex; align-items:center; min-height:44px; gap:8px; margin-left:8px; font-weight:600; }
.ph-product-bar { border-top:1px solid var(--cxy-border); border-bottom:1px solid var(--cxy-border); background:var(--cxy-surface-card); }
.ph-product-bar-inner { display:grid; grid-template-columns:1fr 1fr 1fr; }
.ph-product-bar-inner>a { display:flex; gap:20px; padding:28px 32px 28px 0; align-items:center; color:var(--cxy-ink); }
.ph-product-bar-inner>a+a { padding-left:32px; border-left:1px solid var(--cxy-border); }
.ph-bar-index { color:var(--cxy-action); font-family:var(--cxy-font-num); font-size:14px; }
.ph-product-bar strong { display:block; font-size:20px; }
.ph-product-bar a div span { display:block; color:var(--cxy-muted); font-size:14px; margin-top:8px; }
.ph-product-bar a>span:last-child { color:var(--cxy-action); margin-left:auto; }
.ph-product-bar a:hover strong { color:var(--cxy-action); }
.ph-brand-signature { border-left:1px solid var(--cxy-border); padding:28px 0 28px 32px; align-self:center; }
.ph-brand-signature strong { font-size:16px; }.ph-brand-signature>span { display:block; color:var(--cxy-muted); font-size:13px; margin-top:10px; }
.ph-ai-grid { display:grid; grid-template-columns:.9fr 1.1fr; align-items:center; gap:72px; }
.ph-section-copy h2,.ph-tax-copy h2,.ph-together h2 { font-size:clamp(32px,3.3vw,46px); line-height:1.3; letter-spacing:-.035em; margin:20px 0 24px; }
.ph-section-copy>p,.ph-tax-copy>p { font-size:17px; line-height:1.9; color:var(--cxy-text); max-width:32em; }
.ph-text-link { display:inline-flex; align-items:center; min-height:44px; color:var(--cxy-action); font-size:14px; font-weight:600; }
.ph-section-copy>.ph-text-link { margin-top:16px; }
.ph-capabilities { display:grid; grid-template-columns:1fr 1fr; gap:20px; position:relative; }
.ph-capabilities::before { content:""; position:absolute; inset:-20px; background:radial-gradient(ellipse,color-mix(in srgb,var(--cxy-cyan) 10%,transparent),transparent 70%); z-index:0; pointer-events:none; }
.ph-capability { position:relative; padding:28px; border:1px solid color-mix(in srgb,var(--cxy-action) 13%,var(--cxy-border)); border-radius:24px; background:var(--cxy-surface-card); color:var(--cxy-ink); transition:transform .2s ease,border-color .2s ease; }
.ph-capability:nth-child(2),.ph-capability:nth-child(3) { background:var(--cxy-surface-subtle); }
.ph-capability:hover { transform:translateY(-3px); border-color:var(--cxy-action); }
.ph-icon { display:inline-flex; width:48px; height:48px; align-items:center; justify-content:center; border-radius:14px; background:var(--cxy-tint-blue-bg); color:var(--cxy-action); }
.ph-icon svg { width:26px; height:26px; fill:none; stroke:currentColor; stroke-width:1.6; stroke-linecap:round; stroke-linejoin:round; }
.ph-capability h3 { font-size:21px; margin:20px 0 12px; }
.ph-capability p { color:var(--cxy-text); font-size:14px; line-height:1.85; margin:0; }
.ph-capability-link { display:block; margin-top:20px; color:var(--cxy-action); font-size:13px; }
.ph-tax-section { padding:0 0 96px; }
.ph-tax-poster { position:relative; overflow:hidden; isolation:isolate; border:1px solid var(--cxy-border); border-radius:28px; }
.ph-tax-poster>img { position:absolute; inset:0; width:100%; height:100%; object-fit:cover; object-position:center; z-index:-1; }
.ph-tax-copy { width:54%; padding:64px 0 64px 48px; }
.ph-tax-copy>p { max-width:26em; }
.ph-tax-copy .ph-service-note { margin-top:20px; font-size:13px; color:var(--cxy-muted); }
.ph-tax-details { display:grid; grid-template-columns:repeat(3,1fr); gap:40px; padding:32px 0; }
.ph-tax-details>div { display:grid; grid-template-columns:28px 1fr; gap:8px 12px; }
.ph-tax-details>div>span { color:var(--cxy-action); font:500 14px/1.8 var(--cxy-font-num); }
.ph-tax-details h3 { font-size:18px; margin:0; }
.ph-tax-details p { grid-column:2; color:var(--cxy-text); line-height:1.8; font-size:14px; margin:0; }
.ph-disclaimer { border-top:1px solid var(--cxy-border); padding-top:20px; margin:0; color:var(--cxy-muted); font-size:13px; line-height:1.8; }
.ph-together { position:relative; overflow:hidden; padding:72px 0; background:var(--cxy-isle-bg); color:var(--cxy-isle-ink); }
.ph-together::before { content:""; position:absolute; width:560px; height:560px; right:-120px; top:-200px; border-radius:50%; background:radial-gradient(circle,color-mix(in srgb,var(--cxy-cyan) 14%,transparent),transparent 66%); pointer-events:none; }
.ph-together-inner { display:grid; grid-template-columns:1fr 1.1fr; align-items:center; gap:64px; position:relative; }
.ph-together .portal-eyebrow { color:var(--cxy-isle-tint-cyan-fg); }
.ph-together h2 { color:var(--cxy-isle-ink); font-size:36px; margin-bottom:20px; }
.ph-together p { color:var(--cxy-isle-text); font-size:15px; line-height:1.8; }
.ph-together-path { display:grid; grid-template-columns:1fr 24px 1fr; gap:16px; align-items:center; }
.ph-together-path a { padding:28px 24px; border:1px solid var(--cxy-isle-border-strong); border-radius:20px; background:var(--cxy-isle-surface-card); color:var(--cxy-isle-ink); }
.ph-together-path a:hover { border-color:var(--cxy-isle-tint-cyan-fg); }
.ph-together-path small { color:var(--cxy-isle-muted); font-size:13px; }
.ph-together-path strong { display:block; font-size:26px; margin:16px 0; }
.ph-together-path a>span { color:var(--cxy-isle-text); font-size:13px; line-height:1.8; }
.ph-path-plus { color:var(--cxy-isle-tint-cyan-fg); font-size:28px; }
.ph-support .portal-heading h2 { font-size:32px; }
.ph-support-grid { display:grid; grid-template-columns:1fr 1.6fr; gap:48px; }
.ph-ai-entry { padding:32px; background:var(--cxy-surface-subtle); border-radius:24px; border:1px solid var(--cxy-border); }
.ph-ai-entry h3,.ph-knowledge-heading h3 { margin:20px 0 12px; font-size:24px; }
.ph-ai-entry p,.ph-knowledge-entry>p { color:var(--cxy-text); font-size:15px; line-height:1.8; }
.ph-knowledge-heading { display:flex; align-items:center; justify-content:space-between; gap:20px; }
.ph-knowledge-heading h3 { margin:0; }
.ph-knowledge-entry ul { list-style:none; margin:20px 0 0; padding:0; }
.ph-knowledge-entry li { border-top:1px solid var(--cxy-border); }
.ph-knowledge-entry li a { display:flex; align-items:center; justify-content:space-between; gap:16px; padding:18px 0; color:var(--cxy-ink); line-height:1.7; font-weight:600; font-size:15px; }
.ph-knowledge-entry li a:hover { color:var(--cxy-action); }.ph-knowledge-entry li a span { color:var(--cxy-action); }
.ph-knowledge-links { display:flex; flex-wrap:wrap; gap:24px; margin-top:12px; }
.ph-knowledge-links a { color:var(--cxy-action); font-size:13px; display:inline-flex; align-items:center; min-height:44px; }
.product-home .portal-final { padding-top:0; }
[data-theme="dark"] .ph-hero-image { opacity:.38; }
[data-theme="dark"] .ph-hero::after { content:""; position:absolute; inset:0; z-index:-1; background:linear-gradient(90deg,var(--cxy-surface-page),transparent 88%); }
[data-theme="dark"] .ph-tax-poster>img { opacity:.25; }
[data-theme="dark"] .ph-tax-poster { background:var(--cxy-surface-card); }
@media(max-width:1100px) {
 .ph-hero-inner { min-height:600px; }.ph-hero-copy { width:58%; }.ph-hero-image { object-position:60% center; }
 .ph-ai-grid { gap:40px; }.ph-capability { padding:24px; }.ph-together-inner { gap:32px; }.ph-together-path { gap:8px; }.ph-together-path a { padding:24px 16px; }
 .ph-tax-copy { width:58%; padding:48px 0 48px 32px; }
}
@media(max-width:900px) {
 .ph-hero-copy { width:62%; }.ph-hero h1 { font-size:56px; }.ph-lead { font-size:18px; }
 .ph-product-bar-inner { grid-template-columns:1fr 1fr; }.ph-brand-signature { display:none; }
 .ph-ai-grid,.ph-together-inner { grid-template-columns:1fr; gap:40px; }.ph-section-copy { max-width:600px; }
 .ph-support-grid { grid-template-columns:1fr 1.5fr; gap:24px; }.ph-tax-copy { width:64%; }
}
@media(max-width:640px) {
 .ph-hero { display:flex; flex-direction:column; }.ph-hero-inner { order:1; min-height:0; padding-top:40px; padding-bottom:8px; width:100%; }.ph-hero-copy { width:100%; max-width:none; }
 .ph-hero-image { order:2; position:relative; z-index:0; height:300px; object-fit:cover; object-position:80% center; margin-top:0; }
 .ph-product-name { margin-top:24px; font-size:18px; }.ph-hero h1 { font-size:52px; margin-bottom:24px; }.ph-lead { font-size:17px; }.ph-actions { margin-top:24px; gap:8px; }.ph-actions .btn { padding:12px 16px; font-size:14px; gap:8px; }.ph-hero-note { margin-top:16px; font-size:13px; }.ph-hero-note a { margin-left:0; }
 .ph-product-bar-inner>a { padding:24px 16px 24px 0; gap:12px; }.ph-product-bar-inner>a+a { padding-left:20px; }.ph-product-bar strong { font-size:18px; }.ph-product-bar a div span { font-size:12px; }.ph-product-bar a>span:last-child { display:none; }
 .product-home .portal-section { padding:64px 0; }.ph-capabilities { gap:12px; }.ph-capability { padding:20px 16px; border-radius:18px; }.ph-capability h3 { font-size:19px; }.ph-capability p { font-size:14px; }.ph-capability-link { font-size:12px; }.ph-section-copy h2,.ph-tax-copy h2 { font-size:32px; }
 .ph-tax-section { padding-bottom:56px; }.ph-tax-poster { display:flex; flex-direction:column; }.ph-tax-copy { width:100%; padding:32px 24px 8px; order:1; background:var(--cxy-surface-card); }.ph-tax-poster>img { position:relative; height:240px; order:2; z-index:0; object-position:80% center; }.ph-tax-copy>p { font-size:15px; }
 .ph-tax-details { grid-template-columns:1fr; gap:24px; padding:28px 0; }.ph-together { padding:56px 0; }.ph-together h2 { font-size:32px; }.ph-together-path { grid-template-columns:1fr; gap:12px; }.ph-together-path a { padding:24px; }.ph-path-plus { text-align:center; line-height:1; }.ph-together-path strong { margin:8px 0; }.ph-together-inner { gap:24px; }
 .ph-support-grid { grid-template-columns:1fr; gap:32px; }.ph-support .portal-heading h2 { font-size:28px; }.ph-ai-entry { padding:24px; }.product-home .portal-final-in { margin-left:24px; margin-right:24px; width:auto; }.product-home .portal-final { padding-bottom:64px; }
}
@media(prefers-reduced-motion:reduce) { .product-home * { animation:none!important; transition:none!important; scroll-behavior:auto!important; } }