:root {
    --color-primary: #2f6f5e;
    --color-primary-dark: #204b41;
    --color-accent: #c47b5a;
    --color-surface: #faf8f3;
    --color-text: #2d2d2d;
    --rgb-primary: 47,111,94;
    --rgb-accent: 196,123,90;
    --radius-sm: 7px;
    --radius-md: 12px;
    --radius-lg: 14px;
    --radius-xl: 22px;
    --shadow-sm: 0 1px 0 rgba(45,45,45,.06);
    --shadow-md: 0 10px 30px rgba(45,45,45,.08), 0 2px 10px rgba(45,45,45,.05);
    --shadow-lg: 0 18px 50px rgba(45,45,45,.12), 0 6px 18px rgba(45,45,45,.08);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 420ms cubic-bezier(0.16, 1, 0.3, 1);
    --heading-weight: 800;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body { 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:
        0 1px 0 rgba(45,45,45,.06),
        0 10px 26px rgba(45,45,45,.08),
        0 0 0 1px rgba(var(--rgb-accent), .08);
    padding: var(--space-card);
    transition: transform 420ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 420ms cubic-bezier(0.16, 1, 0.3, 1), border-color 420ms cubic-bezier(0.16, 1, 0.3, 1), background-color 420ms cubic-bezier(0.16, 1, 0.3, 1);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: transform 420ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 420ms cubic-bezier(0.16, 1, 0.3, 1), background-color 420ms cubic-bezier(0.16, 1, 0.3, 1), color 420ms cubic-bezier(0.16, 1, 0.3, 1), border-color 420ms cubic-bezier(0.16, 1, 0.3, 1);
}
a:not([class]) {
    color: var(--color-primary);
    transition: color 420ms cubic-bezier(0.16, 1, 0.3, 1), text-shadow 420ms cubic-bezier(0.16, 1, 0.3, 1);
    text-shadow: 0 1px 0 rgba(250,248,243,.25);
}

/* ========== 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); }
                .news-grid > *:first-child { grid-row: span 2; }

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

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

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

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }

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

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-4px);
    box-shadow:
        0 1px 0 rgba(45,45,45,.08),
        0 22px 64px rgba(45,45,45,.14),
        0 0 0 1px rgba(var(--rgb-accent), .16),
        0 0 24px rgba(var(--rgb-accent), .40);
}
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(900px 320px at 20% 10%, rgba(196,123,90,.35), rgba(196,123,90,0) 60%),
        radial-gradient(700px 280px at 80% 0%, rgba(47,111,94,.35), rgba(47,111,94,0) 58%),
        linear-gradient(135deg, #2f6f5e, #204b41);
}
.card { border: 1px solid rgba(var(--rgb-primary), .10); }
header, .header, .navbar { background: 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: 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; }
}