:root {
    --color-primary: #e63946;
    --color-primary-dark: #8f1d2c;
    --color-accent: #f4a261;
    --color-surface: #fff8f0;
    --color-text: #2b2d42;
    --color-card-rose: #ff8a70;
    --color-card-gold: #ffd166;
    --color-card-teal: #64d6c9;
    --color-card-grape: #c59bf5;
    --color-card-ink: #2b2d42;
    --rgb-primary: 230,57,70;
    --rgb-accent: 244,162,97;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 2px 6px rgba(43,45,66,.06), 0 8px 20px -10px rgba(43,45,66,.08);
    --shadow-md: 0 4px 10px rgba(43,45,66,.05), 0 12px 28px -10px rgba(43,45,66,.10), 0 24px 50px -20px rgba(43,45,66,.12);
    --shadow-lg: 0 8px 16px rgba(43,45,66,.06), 0 24px 48px -12px rgba(43,45,66,.12), 0 48px 80px -24px rgba(43,45,66,.14);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 600;
    --body-line-height: 1.65;
}

body {
    background:
        radial-gradient(900px 600px at 12% 8%, rgba(230,57,70,.06), transparent 60%),
        radial-gradient(800px 500px at 88% 12%, rgba(42,157,143,.08), transparent 55%),
        #faf6ef;
    color: var(--color-text);
    line-height: var(--body-line-height);
    accent-color: var(--color-primary);
    caret-color: var(--color-primary);
}

h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 1px 2px rgba(43,45,66,.05); }

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: var(--color-surface); }

.card:hover, [class*="card"]:hover { box-shadow: var(--shadow-lg); filter: brightness(1.02); }

[class*="card"]:nth-child(4n+1) { background: linear-gradient(135deg, var(--color-surface), var(--color-card-rose)); box-shadow: var(--shadow-md), inset 0 4px 0 rgba(230,57,70,.45); }
[class*="card"]:nth-child(4n+2) { background: linear-gradient(135deg, var(--color-surface), var(--color-card-gold)); box-shadow: var(--shadow-md), inset 0 4px 0 rgba(244,162,97,.55); }
[class*="card"]:nth-child(4n+3) { background: linear-gradient(135deg, var(--color-surface), var(--color-card-teal)); box-shadow: var(--shadow-md), inset 0 4px 0 rgba(42,157,143,.45); }
[class*="card"]:nth-child(4n+4) { background: linear-gradient(135deg, var(--color-surface), var(--color-card-grape)); box-shadow: var(--shadow-md), inset 0 4px 0 rgba(155,93,229,.4); }

.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); text-decoration-color: rgba(230,57,70,.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; background: linear-gradient(135deg, var(--color-card-ink), #3d405b); color: #fff8f0; border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); }
.news-grid > *:not(:first-child) { background: linear-gradient(135deg, var(--color-surface), #ffe8d6); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }

/* features: grid-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.feature-list > * { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); background: linear-gradient(145deg, var(--color-surface), #edf6f2); }
.feature-list > *:nth-child(3n+2) { background: linear-gradient(145deg, var(--color-surface), var(--color-card-gold)); }
.feature-list > *:nth-child(3n+3) { background: linear-gradient(145deg, var(--color-surface), #f3eafc); }

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

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
.testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); background: linear-gradient(145deg, #fffaf2, #f7ede1); }

/* partners: scroll */
/* 自动滚动 */
.partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 28s linear infinite; }
.partner-grid > * { border-radius: var(--radius-lg); background: rgba(255,248,240,.8); box-shadow: var(--shadow-sm); }
@keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-list > * { border-radius: var(--radius-lg); background: var(--color-surface); box-shadow: var(--shadow-sm); }

/* stats: inline */
/* 水平排列 */
.stats-grid { display: flex; justify-content: center; gap: 3rem; }
.stats-grid > * { border-radius: var(--radius-lg); background: var(--color-surface); box-shadow: var(--shadow-sm); }

/* cta: full-bg */
.cta-section { background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary) 55%, var(--color-accent)); color: #fff8f0; padding: 4rem 2rem; box-shadow: var(--shadow-lg); }

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

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); text-decoration-color: rgba(244,162,97,.5); }
header, .header, .navbar { background: linear-gradient(180deg, rgba(250,246,239,.7), rgba(250,246,239,.35)); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }

/* 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; }
}