:root {
    --color-primary: #a16207;
    --color-primary-dark: #7c3aed;
    --color-accent: #38bdf8;
    --color-surface: #f8fafc;
    --color-text: #2a1a0a;
    --rgb-primary: 161,98,7;
    --rgb-accent: 56,189,248;
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 26px;
    --radius-xl: 34px;
    --shadow-sm: 0 1px 0 rgba(16,24,40,.06), 0 2px 10px rgba(16,24,40,.06);
    --shadow-md: 0 8px 22px rgba(2,6,23,.08), 0 2px 6px rgba(2,6,23,.06);
    --shadow-lg: 0 18px 40px rgba(2,6,23,.10), 0 6px 16px rgba(2,6,23,.07), 0 1px 0 rgba(255,255,255,.35) inset;
    --space-section: 2.25rem;
    --space-card: 1.25rem;
    --space-gap: 1.25rem;
    --transition: 650ms cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 700;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(180deg, #f3f4f6 0%, #f8fafc 45%, #fefefe 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: 0 1px 0 rgba(255,255,255,.7) inset, 0 10px 30px rgba(2,6,23,.10), 0 4px 12px rgba(2,6,23,.06); padding: var(--space-card); transition: box-shadow var(--transition), transform var(--transition), background var(--transition), border-color var(--transition), color var(--transition); border: 1px solid rgba(148,163,184,.35); background: #ffffff; 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), box-shadow var(--transition), transform var(--transition), color var(--transition), border-color var(--transition); }
a:not([class]) { color: var(--color-primary); transition: color var(--transition), text-shadow var(--transition), transform var(--transition); }
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 20px rgba(56,189,248,.35); }

.card:focus-visible,
.btn:focus-visible,
button[class*="btn"]:focus-visible,
a[class*="btn"]:focus-visible { outline: 3px solid rgba(56,189,248,.35); outline-offset: 3px; }

/* ========== Section Layout Variants ========== */

/* news: list-view */
/* 列表模式 (图左文右) */
                .news-grid { display: flex; flex-direction: column; gap: var(--space-gap); }
                .news-grid .card { display: grid; grid-template-columns: 280px 1fr; border-radius: calc(var(--radius-lg) - 4px); box-shadow: 0 1px 0 rgba(255,255,255,.7) inset, 0 14px 38px rgba(2,6,23,.10), 0 4px 14px rgba(2,6,23,.06); }

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }
.feature-list .card { border-radius: var(--radius-lg); background: linear-gradient(180deg, rgba(255,255,255,.98) 0%, rgba(255,255,255,.92) 100%); }

/* hero: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; } 
                .testimonial-list > * { flex: 0 0 100%; }
                .testimonial-list .card { border-radius: var(--radius-xl); box-shadow: 0 1px 0 rgba(255,255,255,.75) inset, 0 16px 44px rgba(2,6,23,.12), 0 5px 16px rgba(2,6,23,.06); }

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 20s linear infinite; }
                @keyframes partnerScroll { 0% { transform: translateX(0); filter: saturate(1) brightness(1); } 100% { transform: translateX(-50%); filter: saturate(1.05) brightness(1.02); } }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }
.faq-list .card { box-shadow: 0 1px 0 rgba(255,255,255,.75) inset, 0 12px 34px rgba(2,6,23,.09); border-color: rgba(148,163,184,.32); }

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }
                .stats-grid .card { border-radius: 999px; padding-left: 1.1rem; padding-right: 1.1rem; background: linear-gradient(180deg, rgba(255,255,255,.96) 0%, rgba(248,250,252,.9) 100%); }

/* cta: full-bg */
.cta-section { background: linear-gradient(135deg, rgba(161,98,7,1) 0%, rgba(124,58,237,1) 56%, rgba(56,189,248,.95) 100%); color: #ffffff; padding: 4rem 2rem; box-shadow: 0 18px 60px rgba(124,58,237,.22), 0 6px 22px rgba(161,98,7,.18); border: 1px solid rgba(255,255,255,.18); }
.cta-section a:not([class]) { color: #eaffff; text-shadow: 0 10px 30px rgba(56,189,248,.22); }
.cta-section a:not([class]):hover { color: #ffffff; text-shadow: 0 0 26px rgba(56,189,248,.55); }

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
            .page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type { background: radial-gradient(900px 380px at 18% 18%, rgba(56,189,248,.18) 0%, rgba(56,189,248,0) 60%), radial-gradient(700px 340px at 82% 22%, rgba(124,58,237,.20) 0%, rgba(124,58,237,0) 62%), linear-gradient(135deg, rgba(161,98,7,.95) 0%, rgba(124,58,237,.92) 55%, rgba(56,189,248,.55) 100%); }
header, .header, .navbar { box-shadow: 0 12px 28px rgba(2,6,23,.10), 0 2px 8px rgba(2,6,23,.05), 0 1px 0 rgba(255,255,255,.55) inset; border-bottom: 1px solid rgba(148,163,184,.24); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }

/* Responsive */
@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: 2.25rem; --space-card: 1.15rem; --space-gap: 1rem; }
    .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; }
}