:root {
    --color-primary: #b0382a;
    --color-primary-dark: #7b2319;
    --color-accent: #c44536;
    --color-surface: #f5f1e8;
    --color-text: #1a1a1a;
    --rgb-primary: 176,56,42;
    --rgb-accent: 196,69,54;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --shadow-sm: 0 1px 2px rgba(26,26,26,.08), 0 0 12px rgba(var(--rgb-accent),.18);
    --shadow-md: 0 2px 6px rgba(26,26,26,.06), 0 0 24px rgba(var(--rgb-accent),.25);
    --shadow-lg: 0 6px 20px rgba(26,26,26,.08), 0 0 40px rgba(var(--rgb-accent),.38);
    --space-section: 3.5rem;
    --space-card: 1.5rem;
    --space-gap: 1.1rem;
    --transition: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 800;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body {
    background-color: var(--color-surface);
    background-image: linear-gradient(180deg, #faf6ee 0%, var(--color-surface) 40%, #ece3d3 100%);
    color: var(--color-text);
    line-height: var(--body-line-height);
    caret-color: var(--color-accent);
    accent-color: var(--color-accent);
    transition: var(--transition);
}

h1, h2, h3, h4 {
    font-weight: var(--heading-weight);
    text-shadow: 0 1px 2px rgba(26,26,26,.06);
}

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: #fffaf2;
    border: 1px solid rgba(var(--rgb-accent), .12);
}

.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
}

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

/* news: grid-3 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 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: overlay */
.hero {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
    background: radial-gradient(ellipse at center, #e8ddd0 0%, transparent 70%);
    animation: editorial-glow-pulse 4s ease-in-out infinite;
}

.hero-content {
    position: relative;
    z-index: 1;
}

/* testimonials: masonry */
.testimonial-list {
    column-count: 2;
    column-gap: var(--space-gap);
}

.testimonial-list > * {
    break-inside: avoid;
    margin-bottom: 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: two-column */
.faq-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-gap);
}

/* 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: full-width */
.page-main {
    max-width: 1200px;
    margin: 0 auto;
}

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(var(--rgb-accent), .35);
}

a:not([class]):hover {
    color: var(--color-accent);
}

.card {
    border: 1px solid rgba(var(--rgb-accent), .18);
}

@keyframes editorial-glow-pulse {
    0%, 100% {
        box-shadow: 0 0 18px rgba(var(--rgb-accent), .18);
    }
    50% {
        box-shadow: 0 0 32px rgba(var(--rgb-accent), .35);
    }
}

/* 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: 1.1rem;
        --space-gap: 0.8rem;
    }
    .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; }
}