:root {
    --color-primary: #9a6b1f;
    --color-primary-dark: #6b4512;
    --color-accent: #a855f7;
    --color-surface: #fff8e7;
    --color-text: #241a12;
    --rgb-primary: 154,107,31;
    --rgb-accent: 168,85,247;
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 32px;
    --radius-xl: 44px;
    --shadow-sm: 0 2px 6px rgba(15,15,26,.08), 0 1px 2px rgba(154,107,31,.08);
    --shadow-md: 0 14px 28px rgba(15,15,26,.14), 0 4px 12px rgba(154,107,31,.1), 0 0 0 1px rgba(255,255,255,.06) inset;
    --shadow-lg: 0 28px 56px rgba(15,15,26,.2), 0 8px 24px rgba(154,107,31,.14), 0 0 0 1px rgba(255,255,255,.06) inset;
    --space-section: 2.25rem;
    --space-card: 1.1rem;
    --space-gap: 0.8rem;
    --transition: 0.5s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 700;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body {
    color: #f7f3e8;
    line-height: var(--body-line-height);
    background:
        radial-gradient(circle at 50% -5%, rgba(168,85,247,0.28), transparent 55%),
        radial-gradient(circle at 85% 10%, rgba(184,134,11,0.14), transparent 45%),
        linear-gradient(160deg, #0f0f1a 0%, #17142b 50%, #0c0a16 100%);
}
h1, h2, h3, h4 {
    font-weight: var(--heading-weight);
    text-shadow: 0 0 28px rgba(244,185,66,.12), 0 2px 4px rgba(15,15,26,.4);
}
section, .section {
    padding-top: var(--space-section);
    padding-bottom: var(--space-section);
    background: radial-gradient(circle at 50% 0%, rgba(244,185,66,0.06), transparent 55%);
}
.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-card);
    transition: var(--transition);
    background:
        radial-gradient(circle at 90% 5%, rgba(184,134,11,0.14) 0%, transparent 45%),
        linear-gradient(145deg, #fffdf7 0%, #fbf0da 55%, #f6e3c0 100%);
    color: var(--color-text);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    background: linear-gradient(135deg, #f4b942 0%, #d69e2e 45%, #b8860b 100%);
    color: #1d1305;
    box-shadow: 0 12px 24px -8px rgba(184,134,11,.5), 0 4px 8px rgba(15,15,26,.2);
}
a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-shadow: 0 1px 2px rgba(15,15,26,.3);
}

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

/* news: grid-4 */
/* 四列紧凑网格 */
.news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 0.8); }

/* 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;
}

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

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
.testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }

/* partners: scroll */
/* 自动滚动 */
.partner-grid {
    display: flex;
    gap: 2rem;
    overflow: hidden;
    animation: partnerScroll 24s linear infinite;
}
@keyframes partnerScroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }

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

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }

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

/* 条件性装饰 */
.card {
    border-left: 3px solid transparent;
    border-image: linear-gradient(180deg, #f4b942 0%, #a855f7 70%) 1;
}
header, .header, .navbar {
    box-shadow:
        0 1px 0 rgba(255,255,255,.06) inset,
        0 10px 24px rgba(15,15,26,.25),
        0 2px 6px rgba(184,134,11,.08);
    background: linear-gradient(180deg, rgba(15,15,26,0.85) 0%, rgba(23,20,43,0.65) 100%);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

/* 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: 1.8rem;
        --space-card: 0.9rem;
        --space-gap: 0.65rem;
    }
    .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; }
}