:root {
    --color-primary: #6b2f2a;
    --color-primary-dark: #4f1f1b;
    --color-accent: #c44536;
    --color-surface: #f5f1e8;
    --color-text: #1a1a1a;
    --rgb-primary: 107,47,42;
    --rgb-accent: 196,69,54;
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 26px;
    --radius-xl: 34px;

    --shadow-sm:
        0 1px 0 rgba(26,26,26,0.04),
        0 8px 22px rgba(26,26,26,0.08);
    --shadow-md:
        0 10px 30px rgba(26,26,26,0.10),
        0 2px 0 rgba(26,26,26,0.05);
    --shadow-lg:
        0 18px 50px rgba(26,26,26,0.14),
        0 8px 16px rgba(196,69,54,0.10),
        0 1px 0 rgba(26,26,26,0.05);

    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;

    --transition: 520ms cubic-bezier(0.16, 1, 0.32, 1);
    --heading-weight: 600;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: radial-gradient(1000px 700px at 10% -10%, rgba(196,69,54,0.10), rgba(196,69,54,0) 55%), radial-gradient(900px 650px at 110% 10%, rgba(107,47,42,0.10), rgba(107,47,42,0) 60%), var(--color-surface); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 1px 0 rgba(255,255,255,0.55); }
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(26,26,26,0.06),
        0 10px 24px rgba(26,26,26,0.10),
        0 0 0 1px rgba(26,26,26,0.06) inset;
    background: linear-gradient(180deg, rgba(255,255,255,0.78), rgba(255,255,255,0.52));
    padding: var(--space-card);
    transition:
        transform 560ms cubic-bezier(0.16, 1, 0.32, 1),
        box-shadow 560ms cubic-bezier(0.16, 1, 0.32, 1),
        border-color 560ms cubic-bezier(0.16, 1, 0.32, 1),
        background 560ms cubic-bezier(0.16, 1, 0.32, 1),
        filter 560ms cubic-bezier(0.16, 1, 0.32, 1);
    border-style: solid;
    border-color: rgba(26,26,26,0.08);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition:
        transform 520ms cubic-bezier(0.16, 1, 0.32, 1),
        box-shadow 520ms cubic-bezier(0.16, 1, 0.32, 1),
        background 520ms cubic-bezier(0.16, 1, 0.32, 1),
        color 520ms cubic-bezier(0.16, 1, 0.32, 1),
        border-color 520ms cubic-bezier(0.16, 1, 0.32, 1);
    outline-color: rgba(196,69,54,0.55);
    caret-color: var(--color-accent);
    accent-color: var(--color-accent);
}
a:not([class]) { color: var(--color-primary-dark); transition: var(--transition); text-shadow: 0 1px 0 rgba(255,255,255,0.55); }

/* ========== 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: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

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

/* testimonials: grid-3 */
.testimonial-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }

/* cta: card-style */
.cta-inner {
    background:
        radial-gradient(900px 400px at 20% 0%, rgba(196,69,54,0.18), rgba(196,69,54,0) 60%),
        radial-gradient(650px 320px at 90% 20%, rgba(107,47,42,0.14), rgba(107,47,42,0) 55%),
        linear-gradient(180deg, rgba(255,255,255,0.82), rgba(255,255,255,0.50));
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    border-style: solid;
    border-color: rgba(196,69,54,0.20);
    box-shadow:
        0 1px 0 rgba(26,26,26,0.06),
        0 22px 70px rgba(26,26,26,0.14),
        0 6px 18px rgba(196,69,54,0.12);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    opacity: 0.98;
}

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-6px);
    box-shadow:
        0 2px 0 rgba(26,26,26,0.06),
        0 22px 70px rgba(26,26,26,0.16),
        0 10px 22px rgba(196,69,54,0.14),
        0 0 0 1px rgba(196,69,54,0.20) inset;
    filter: saturate(1.03);
    border-color: rgba(196,69,54,0.26);
}
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(900px 450px at 15% 15%, rgba(255,255,255,0.18), rgba(255,255,255,0) 58%),
        linear-gradient(135deg, rgba(196,69,54,0.95), rgba(79,31,27,0.92));
    color: rgba(245,241,232,0.98);
}
.hero, [class*="hero"], section:first-of-type * {
    color: inherit;
}

/* 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; --radius-sm: 12px; --radius-md: 16px; --radius-lg: 22px; --radius-xl: 30px; }
    .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; }
}