:root {
    --color-primary: #3b5266;
    --color-primary-dark: #252e3a;
    --color-accent: #e98a2b;
    --color-surface: #f6f2ea;
    --color-text: #1f2733;
    --rgb-primary: 59,82,102;
    --rgb-accent: 233,138,43;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 26px;
    --shadow-sm: 0 2px 6px rgba(31,38,51,.05), 0 1px 2px rgba(31,38,51,.04), 0 0 0 1px rgba(252,250,246,.45) inset;
    --shadow-md: 0 14px 34px -12px rgba(31,38,51,.16), 0 4px 14px -8px rgba(31,38,51,.1), 0 0 0 1px rgba(254,252,248,.75) inset;
    --shadow-lg: 0 28px 60px -18px rgba(31,38,51,.22), 0 12px 28px -12px rgba(31,38,51,.12), 0 0 0 1px rgba(254,252,248,.6) inset;
    --space-section: 3.25rem;
    --space-card: 1.375rem;
    --space-gap: 1.125rem;
    --transition: 0.55s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 600;
    --body-line-height: 1.65;
    caret-color: var(--color-accent);
    accent-color: var(--color-accent);
}

body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(165deg, #faf7f1 0%, var(--color-surface) 55%, #e6ded2 100%); }
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(--shadow-md); padding: var(--space-card); transition: var(--transition); background: linear-gradient(145deg, #fffdf8 0%, #f5f0e7 100%); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, var(--color-accent) 0%, #c96412 100%); color: #fefcf8; box-shadow: 0 8px 20px -8px rgba(233,138,43,.55), 0 2px 6px rgba(31,38,51,.08); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-color: rgba(233,138,43,.55); }

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

/* news: masonry-2 */
.news-grid { column-count: 2; column-gap: var(--space-gap); }
.news-grid .card { break-inside: avoid; margin-bottom: var(--space-gap); }

/* features: centered */
.feature-list { display: flex; flex-direction: column; align-items: center; gap: calc(var(--space-gap) * 2); max-width: 720px; margin: 0 auto; }

/* 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: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 1.875rem; }

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

/* stats: inline */
.stats-grid { display: flex; justify-content: center; gap: 2.75rem; }

/* cta: full-bg */
.cta-section { background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 55%, #527087 100%); color: #f4f8f7; padding: 4.25rem 2rem; box-shadow: inset 0 1px 0 rgba(255,255,255,.12), 0 20px 50px -24px rgba(37,46,58,.5); }

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

/* 条件性装饰 */
header, .header, .navbar { background: linear-gradient(180deg, rgba(254,252,248,.92), rgba(250,247,241,.72)); box-shadow: 0 4px 24px -12px rgba(37,46,58,.18), 0 0 0 1px rgba(254,252,248,.6) inset; 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: 2.25rem; --space-card: 1rem; --space-gap: 0.875rem; }
    .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; }
}