:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #4c1d95;
    --color-accent: #22c55e;
    --color-surface: #f7fbff;
    --color-text: #0f172a;
    --rgb-primary: 124,58,237;
    --rgb-accent: 34,197,94;
    --radius-sm: 8px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --shadow-sm: 0 1px 0 rgba(2,6,23,.04);
    --shadow-md: 0 10px 30px rgba(2,6,23,.10), 0 2px 10px rgba(124,58,237,.10), 0 1px 0 rgba(255,255,255,.6) inset;
    --shadow-lg: 0 22px 60px rgba(2,6,23,.16), 0 10px 24px rgba(124,58,237,.18), 0 2px 0 rgba(255,255,255,.55) inset;
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 0.5s cubic-bezier(.2,.9,.2,1);
    --heading-weight: 700;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: radial-gradient(900px 500px at 15% 10%, rgba(124,58,237,.10), transparent 55%), radial-gradient(700px 420px at 85% 15%, rgba(34,197,94,.10), transparent 52%), linear-gradient(180deg, #f8fbff 0%, #f3f7ff 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: #0b1220; }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition); background: linear-gradient(180deg, rgba(255,255,255,.92) 0%, rgba(247,251,255,.86) 100%); border: 1px solid rgba(2,6,23,.06); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition), border-color var(--transition); border: 1px solid rgba(124,58,237,.30); background: linear-gradient(135deg, rgba(124,58,237,.12) 0%, rgba(34,197,94,.10) 100%); color: #0f172a; }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-color: rgba(124,58,237,.35); text-underline-offset: 3px; }
a:not([class]):hover { text-decoration-color: rgba(34,197,94,.60); }
a:not([class]) { text-shadow: 0 1px 0 rgba(255,255,255,.35); }

.card:hover, [class*="card"]:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(124,58,237,.35); }
.card, [class*="card"] { position: relative; }
.card::after, [class*="card"]::after {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    pointer-events: none;
    background: linear-gradient(135deg, rgba(124,58,237,.55) 0%, rgba(34,197,94,.42) 40%, rgba(124,58,237,.15) 100%);
    opacity: 0;
    transition: opacity var(--transition);
    mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    padding: 1px;
}
.card:hover::after, [class*="card"]:hover::after { opacity: .9; }

a:not([class]):hover { color: var(--color-accent); }

.hero, [class*="hero"], section:first-of-type { background: radial-gradient(1200px 520px at 25% 10%, rgba(124,58,237,.85) 0%, rgba(124,58,237,.20) 45%, rgba(0,0,0,0) 70%), radial-gradient(900px 480px at 85% 20%, rgba(34,197,94,.62) 0%, rgba(34,197,94,.16) 46%, rgba(0,0,0,0) 72%), linear-gradient(135deg, rgba(124,58,237,.95) 0%, rgba(76,29,149,.92) 55%, rgba(17,94,89,.75) 100%); color: rgba(255,255,255,.95); box-shadow: 0 22px 70px rgba(76,29,149,.28); border: 1px solid rgba(255,255,255,.14); }
.hero, [class*="hero"], section:first-of-type * { text-shadow: 0 1px 0 rgba(0,0,0,.18); }

.card { border-left: 3px solid #7c3aed; }
header, .header, .navbar { box-shadow: 0 12px 26px rgba(2,6,23,.10), 0 2px 10px rgba(124,58,237,.10); background: rgba(255,255,255,.72); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid rgba(2,6,23,.06); }
header, .header, .navbar { transition: box-shadow var(--transition), background var(--transition), border-color var(--transition); }
header:hover, .header:hover, .navbar:hover { box-shadow: 0 18px 40px rgba(2,6,23,.14), 0 6px 20px rgba(124,58,237,.14); border-bottom-color: rgba(124,58,237,.18); background: rgba(255,255,255,.80); }

.news-grid { column-count: 2; column-gap: var(--space-gap); }
.news-grid .card { break-inside: avoid; margin-bottom: var(--space-gap); background: linear-gradient(180deg, rgba(255,255,255,.92) 0%, rgba(247,251,255,.82) 100%); }
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
.testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }
.partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 20s linear infinite; }
@keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }
.cta-section { background: linear-gradient(135deg, rgba(124,58,237,.98) 0%, rgba(76,29,149,.96) 55%, rgba(34,197,94,.92) 100%); color: rgba(255,255,255,.96); padding: 4rem 2rem; position: relative; overflow: hidden; border-top: 1px solid rgba(255,255,255,.18); border-bottom: 1px solid rgba(255,255,255,.12); }
.cta-section::before {
    content: "";
    position: absolute;
    inset: -40%;
    background: radial-gradient(circle at 30% 35%, rgba(255,255,255,.35) 0%, rgba(255,255,255,.12) 26%, rgba(255,255,255,0) 60%);
    transform: rotate(8deg);
    pointer-events: none;
}
.cta-section::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(124,58,237,.25) 0%, rgba(34,197,94,.18) 40%, rgba(255,255,255,0) 70%);
    pointer-events: none;
    opacity: .9;
}
.page-main { max-width: 1400px; margin: 0 auto; }

@media (max-width: 1024px) {
    .news-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .feature-list { grid-template-columns: repeat(2, 1fr) !important; }
    .partner-grid { grid-template-columns: repeat(3, 1fr) !important; }
    .stats-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .hero-inner { grid-template-columns: 1fr !important; }
}
@media (max-width: 640px) {
    :root { --space-section: 2rem; --space-card: 1rem; --space-gap: 0.75rem; }
    .news-grid { grid-template-columns: 1fr !important; }
    .feature-list { grid-template-columns: 1fr !important; }
    .faq-list { grid-template-columns: 1fr !important; }
    .testimonial-list { column-count: 1 !important; }
    .partner-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .stats-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .cta-inner { grid-template-columns: 1fr !important; }
}