:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #431a8b;
    --color-accent: #e0b96f;
    --color-surface: #fbf4e6;
    --color-text: #f2ead9;
    --rgb-primary: 124,58,237;
    --rgb-accent: 224,185,111;
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 28px;
    --radius-xl: 44px;
    --shadow-sm: 0 1px 2px rgba(3,6,18,.35), 0 2px 8px rgba(3,6,18,.2);
    --shadow-md: 0 4px 12px rgba(3,6,18,.35), 0 18px 36px rgba(67,26,139,.16);
    --shadow-lg: 0 12px 28px rgba(3,6,18,.4), 0 36px 72px rgba(67,26,139,.2), 0 0 0 1px rgba(224,185,111,.06);
    --space-section: 5.5rem;
    --space-card: 1.75rem;
    --space-gap: 1.25rem;
    --transition: 0.5s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 600;
    --body-line-height: 1.6;
}

body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background:
        radial-gradient(ellipse at 50% 0%, rgba(124,58,237,.2), transparent 55%),
        radial-gradient(ellipse at 85% 100%, rgba(224,185,111,.08), transparent 50%);
    background-color: #0b0e1a;
    caret-color: var(--color-accent);
}

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: var(--shadow-md);
    padding: var(--space-card);
    transition: var(--transition);
    color: #271b35;
    border: 1px solid transparent;
    background:
        linear-gradient(145deg, rgba(255,255,255,.96), rgba(251,244,230,.86)) padding-box,
        linear-gradient(135deg, rgba(124,58,237,.55), rgba(224,185,111,.65)) border-box;
    background-color: #fcf7ea;
}

.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    color: #251a30;
    background: linear-gradient(135deg, #efcf7e 0%, #cd9d47 38%, #f4df9c 72%, #b5852f 100%);
    box-shadow: 0 6px 16px rgba(124,58,237,.18), 0 12px 28px rgba(224,185,111,.22), inset 0 1px 0 rgba(255,255,255,.35);
}

a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
}

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

/* news: masonry-2 */
.news-grid { column-count: 2; column-gap: var(--space-gap); }
.news-grid .card { break-inside: avoid; margin-bottom: var(--space-gap); }

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }

/* hero: split */
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2.25rem; align-items: center; }

/* testimonials: carousel */
.testimonial-list { display: flex; overflow: hidden; }
.testimonial-list > * { flex: 0 0 100%; }

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; }

/* faq: with-sidebar */
.faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 1.75rem; }

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: card-style */
.cta-inner {
    background:
        radial-gradient(circle at 15% 20%, rgba(124,58,237,.14), transparent 46%),
        radial-gradient(circle at 85% 0%, rgba(224,185,111,.18), transparent 52%),
        linear-gradient(145deg, #fffdf5, var(--color-surface) 58%, #f2e3c4);
    background-color: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: 2.75rem;
    text-align: center;
    color: #251a30;
    box-shadow: var(--shadow-lg);
}

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

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(circle at 18% 12%, rgba(224,185,111,.16), transparent 44%),
        radial-gradient(circle at 82% 18%, rgba(124,58,237,.38), transparent 52%),
        radial-gradient(ellipse at 50% 125%, rgba(67,26,139,.45), transparent 62%),
        linear-gradient(158deg, #0d0b18 0%, #131021 42%, #241239 100%);
}

.card { border: 1px solid transparent; }

/* 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: 1.75rem;
        --space-card: 0.875rem;
        --space-gap: 0.625rem;
    }
    .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; }
}