:root {
    --color-bg: #f6f4f0;
    --color-primary: #d94841;
    --color-primary-dark: #a6342e;
    --color-accent: #f4a259;
    --color-surface: #ffffff;
    --color-text: #2d2a26;
    --rgb-primary: 217,72,65;
    --rgb-accent: 244,162,89;
    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --shadow-sm: 0 2px 8px rgba(45,42,38,.06), 0 1px 2px rgba(45,42,38,.04);
    --shadow-md: 0 10px 30px rgba(45,42,38,.08), 0 4px 10px rgba(45,42,38,.05);
    --shadow-lg: 0 20px 50px rgba(45,42,38,.12), 0 10px 20px rgba(45,42,38,.08);
    --space-section: 5.75rem;
    --space-card: 2.375rem;
    --space-gap: 1.75rem;
    --transition: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 600;
    --body-line-height: 1.7;
    --card-accent: var(--color-surface);
    --card-ink: var(--color-text);
    --card-border: var(--color-primary);
    --card-shadow: var(--shadow-md);
    --card-text-shadow: 0 1px 2px rgba(0,0,0,.12);
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: var(--color-bg); caret-color: var(--color-primary); accent-color: var(--color-primary); }
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(--card-shadow, var(--shadow-md)); padding: var(--space-card); transition: var(--transition); background: var(--card-accent, var(--color-surface)); color: var(--card-ink, var(--color-text)); text-shadow: var(--card-text-shadow); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); box-shadow: var(--shadow-sm); }
a:not([class]) { color: inherit; text-decoration: underline; text-decoration-color: var(--color-primary); text-decoration-thickness: 2px; text-underline-offset: 3px; transition: var(--transition); }

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

/* news: featured-top */
/* 首篇横跨全宽 */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); --card-accent: #ff6b6b; --card-ink: #fff; --card-border: rgba(255,255,255,.5); --card-shadow: 0 12px 30px rgba(255,107,107,.35), 0 4px 10px rgba(255,107,107,.2); }
.news-grid > *:first-child { grid-column: span 3; }

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); --card-accent: #6c5ce7; --card-ink: #fff; --card-border: rgba(255,255,255,.5); --card-shadow: 0 12px 30px rgba(108,92,231,.35), 0 4px 10px rgba(108,92,231,.2); }

/* hero: overlay */
/* 全屏背景+文字覆盖 */
.hero { position: relative; min-height: 70vh; display: flex; align-items: center; }
.hero-content { position: relative; z-index: 1; }

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); --card-accent: #00b894; --card-ink: #fff; --card-border: rgba(255,255,255,.5); --card-shadow: 0 12px 30px rgba(0,184,148,.35), 0 4px 10px rgba(0,184,148,.2); }
.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; --card-accent: #e17055; --card-ink: #fff; --card-border: rgba(255,255,255,.5); --card-shadow: 0 12px 30px rgba(225,112,85,.35), 0 4px 10px rgba(225,112,85,.2); }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
.faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2.25rem; --card-accent: #0984e3; --card-ink: #fff; --card-border: rgba(255,255,255,.5); --card-shadow: 0 12px 30px rgba(9,132,227,.35), 0 4px 10px rgba(9,132,227,.2); }

/* stats: inline */
/* 水平排列 */
.stats-grid { display: flex; justify-content: center; gap: 3.25rem; --card-accent: #fdcb6e; --card-ink: #2d2a26; --card-border: rgba(0,0,0,.12); --card-shadow: 0 12px 30px rgba(253,203,110,.35), 0 4px 10px rgba(253,203,110,.2); --card-text-shadow: none; }

/* 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 var(--card-border); }
header, .header, .navbar { background: rgba(255,255,255,.72); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }

/* 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: 2.4rem; --space-card: 1.2rem; --space-gap: 0.9rem; }
    .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; }
}