:root {
    --color-primary: #8a5a2b;
    --color-primary-dark: #6f3f1c;
    --color-accent: #c2410c;
    --color-surface: #f7f5ef;
    --color-text: #1f2328;
    --rgb-primary: 138,90,43;
    --rgb-accent: 194,65,12;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --shadow-sm: 0 1px 0 rgba(15, 23, 42, 0.04), 0 10px 30px rgba(15, 23, 42, 0.08);
    --shadow-md: 0 1px 0 rgba(15, 23, 42, 0.04), 0 14px 38px rgba(15, 23, 42, 0.10);
    --shadow-lg: 0 1px 0 rgba(15, 23, 42, 0.06), 0 22px 60px rgba(15, 23, 42, 0.14);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 1.125rem;
    --transition: 0.52s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 700;
    --body-line-height: 1.7;
}

body { 
    color: var(--color-text); 
    line-height: var(--body-line-height);
    background:
        radial-gradient(1200px 700px at 15% -10%, rgba(194,65,12,0.10), rgba(194,65,12,0.00) 55%),
        radial-gradient(900px 520px at 95% 15%, rgba(138,90,43,0.10), rgba(138,90,43,0.00) 60%),
        linear-gradient(180deg, rgba(255,255,255,0.9), rgba(247,245,239,1));
}

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(15, 23, 42, 0.06),
        0 10px 24px rgba(15, 23, 42, 0.10),
        0 1px 0 rgba(255, 255, 255, 0.7) inset;
    padding: var(--space-card); 
    transition: 
        transform var(--transition),
        box-shadow var(--transition),
        border-color var(--transition),
        background var(--transition),
        filter var(--transition);
    background:
        linear-gradient(180deg, rgba(255,255,255,0.96), rgba(255,255,255,0.90)),
        radial-gradient(900px 220px at 15% 0%, rgba(194,65,12,0.12), rgba(194,65,12,0) 58%);
    border: 1px solid rgba(var(--rgb-primary), .10);
}
.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: 
        transform var(--transition),
        background var(--transition),
        box-shadow var(--transition),
        color var(--transition),
        border-color var(--transition);
}
a:not([class]) { 
    color: var(--color-primary);
    transition: var(--transition);
}
a:not([class]):focus-visible,
.card:focus-within { outline: 2px solid rgba(var(--rgb-accent), 0.35); outline-offset: 3px; }

.card:hover, [class*="card"]:hover { 
    transform: translateY(-6px);
    box-shadow: 
        0 1px 0 rgba(15, 23, 42, 0.08),
        0 18px 46px rgba(15, 23, 42, 0.16),
        0 1px 0 rgba(255, 255, 255, 0.75) inset,
        0 0 0 6px rgba(194,65,12,0.07);
    filter: saturate(1.03);
}
a:not([class]):hover { color: var(--color-accent); }

.card { border: 1px solid rgba(var(--rgb-primary), .10); }
header, .header, .navbar { background: transparent; }

.card:hover, [class*="card"]:hover { border-color: rgba(var(--rgb-accent), .20); }

.card {
    caret-color: var(--color-accent);
    accent-color: var(--color-accent);
}

@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: 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; }
}

/* ========== 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; background:
        linear-gradient(180deg, rgba(255,255,255,0.98), rgba(255,255,255,0.88)),
        radial-gradient(760px 260px at 80% 0%, rgba(138,90,43,0.14), rgba(138,90,43,0) 58%); }

/* 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; }
                .feature-list .card { background:
        linear-gradient(180deg, rgba(255,255,255,0.98), rgba(255,255,255,0.89)),
        radial-gradient(820px 260px at 10% 0%, rgba(194,65,12,0.13), rgba(194,65,12,0) 60%); }

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }

/* testimonials: stacked */
/* 垂直堆叠 */
                .testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; }
                .testimonial-list .card { background:
        linear-gradient(180deg, rgba(255,255,255,0.98), rgba(255,255,255,0.90)),
        radial-gradient(900px 260px at 100% 0%, rgba(138,90,43,0.14), rgba(138,90,43,0) 55%); }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }
.partner-grid .card { background:
        linear-gradient(180deg, rgba(255,255,255,0.98), rgba(255,255,255,0.90)),
        linear-gradient(135deg, rgba(194,65,12,0.10), rgba(194,65,12,0) 55%); }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-list .card { background:
        linear-gradient(180deg, rgba(255,255,255,0.98), rgba(255,255,255,0.90)),
        radial-gradient(700px 220px at 20% 0%, rgba(194,65,12,0.12), rgba(194,65,12,0) 60%); }

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid .card { background:
        linear-gradient(180deg, rgba(255,255,255,0.98), rgba(255,255,255,0.90)),
        radial-gradient(760px 220px at 60% 0%, rgba(138,90,43,0.13), rgba(138,90,43,0) 60%); }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }
.cta-inner .card { background:
        linear-gradient(180deg, rgba(255,255,255,0.98), rgba(255,255,255,0.90)),
        conic-gradient(from 210deg at 50% 50%, rgba(194,65,12,0.16), rgba(138,90,43,0.10), rgba(255,255,255,0) 55%, rgba(194,65,12,0.16)); }

/* Page Layout: narrow-centered */
/* 窄版居中 */
            .page-main { max-width: 860px; margin: 0 auto; }