:root {
    --color-primary: #dc2626;
    --color-primary-dark: #7f1d1d;
    --color-accent: #fbbf24;
    --color-surface: #241a14;
    --color-text: #f6ede3;
    --rgb-primary: 220, 38, 38;
    --rgb-accent: 251, 191, 36;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3), 0 0 18px rgba(var(--rgb-accent), 0.14);
    --shadow-md: 0 10px 22px rgba(0, 0, 0, 0.5), 0 0 34px rgba(var(--rgb-accent), 0.28);
    --shadow-lg: 0 18px 38px rgba(0, 0, 0, 0.6), 0 0 60px rgba(var(--rgb-accent), 0.45);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 800;
    --body-line-height: 1.6;
}

body { background-color: #0c0806; color: var(--color-text); line-height: var(--body-line-height); }
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); background-color: var(--color-surface); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark)); color: #fff7ed; box-shadow: 0 8px 24px rgba(124, 45, 18, 0.25); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); }

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

/* news: featured-left */
/* 左大右小 (1大+2小) */
.news-grid { display: grid; grid-template-columns: 2fr 1fr; grid-template-rows: auto auto; gap: var(--space-gap); background-color: #170e0a; border-radius: var(--radius-xl); }
.news-grid > *:first-child { grid-row: span 2; }

/* features: centered */
/* 居中大卡片 */
.feature-list { display: flex; flex-direction: column; align-items: center; gap: calc(var(--space-gap) * 2); max-width: 720px; margin: 0 auto; background-color: #10170f; border-radius: var(--radius-xl); }

/* hero: minimal */
.hero { padding: 2rem 0; } .hero-content { max-width: 560px; }

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); background-color: #1a1116; border-radius: var(--radius-lg); }
.testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; background-color: #0f1517; border-radius: var(--radius-lg); }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); background-color: #18120b; border-radius: var(--radius-lg); }

/* stats: inline */
/* 水平排列 */
.stats-grid { display: flex; justify-content: center; gap: 3rem; background-color: #121b12; border-radius: var(--radius-lg); }

/* cta: card-style */
.cta-inner { background: radial-gradient(120% 140% at 8% 0%, rgba(var(--rgb-primary), 0.25), transparent 50%), linear-gradient(135deg, var(--color-surface), #3a2416); border-radius: var(--radius-xl); padding: 3rem; text-align: center; box-shadow: var(--shadow-md); animation: glowPulse 6s ease-in-out infinite; }

/* Page Layout: wide */
/* 超宽 */
.page-main { max-width: 1400px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-4px); box-shadow: 0 0 24px rgba(var(--rgb-accent), 0.45), 0 0 64px rgba(var(--rgb-accent), 0.22), 0 18px 34px rgba(0, 0, 0, 0.55); }
a:not([class]):hover { color: #fde68a; }
.hero, [class*="hero"], section:first-of-type { background: radial-gradient(100% 120% at 85% 0%, rgba(220, 38, 38, 0.3), transparent 60%), radial-gradient(90% 110% at 5% 100%, rgba(251, 191, 36, 0.12), transparent 55%), linear-gradient(135deg, #120706, #2b0b0a 60%, #430b0b); }
.card { border-left: 3px solid var(--color-primary); }
header, .header, .navbar { background: transparent; }

@keyframes glowPulse {
    0%, 100% { box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5), 0 0 18px rgba(var(--rgb-accent), 0.16); }
    50% { box-shadow: 0 8px 20px rgba(0, 0, 0, 0.55), 0 0 40px rgba(var(--rgb-accent), 0.36); }
}

/* 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: 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; }
}