/* yuanbang-education.com — airy-rhythm warm minimal */
:root {
    --color-bg: #faf8f3;
    --color-primary: #4f7355;
    --color-primary-dark: #334d36;
    --color-accent: #c47b5a;
    --color-surface: #ece3d5;
    --color-text: #2d2d2d;
    --rgb-primary: 79,115,85;
    --rgb-accent: 196,123,90;
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 28px;
    --radius-xl: 40px;
    --shadow-sm: 0 2px 12px rgba(45,45,45,.04), 0 8px 18px -14px rgba(196,123,90,.14);
    --shadow-md: 0 2px 4px rgba(45,45,45,.03), 0 28px 44px -26px rgba(79,115,85,.25), inset 0 0 0 1px rgba(255,252,247,.35);
    --shadow-lg: 0 4px 8px rgba(45,45,45,.04), 0 36px 64px -28px rgba(51,77,54,.24);
    --space-section: 3.375rem;
    --space-card: 1.5rem;
    --space-gap: 1.15rem;
    --transition: 240ms cubic-bezier(.2,.7,.3,1);
    --heading-weight: 800;
    --body-line-height: 1.75;
}

body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background:
        radial-gradient(960px 420px at 88% -10%, rgba(196,123,90,.11), transparent 62%),
        linear-gradient(180deg, #fefcf7 0%, var(--color-bg) 42%, #f4efe5 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); background: linear-gradient(150deg, rgba(255,252,247,.9) 0%, var(--color-surface) 100%); backdrop-filter: blur(8px); padding: var(--space-card); transition: var(--transition); }

.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%); color: var(--color-bg); box-shadow: 0 12px 22px -14px rgba(var(--rgb-primary), .65), inset 0 1px 0 rgba(255,252,247,.22); transition: var(--transition); }

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: horizontal */
.feature-list { display: flex; gap: var(--space-gap); overflow-x: auto; scroll-snap-type: x mandatory; }
.feature-list > * { flex: 0 0 300px; scroll-snap-align: start; }

/* hero: split */
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2.25rem; align-items: center; }

/* testimonials: carousel */
.testimonial-list { display: flex; overflow: hidden; } 
.testimonial-list > * { flex: 0 0 100%; }

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; }

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

/* stats: big-number */
.stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2.25rem; }
.stats-grid .stat-value { font-size: 3rem; }

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

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

/* 条件性装饰 */
.card { border: 1px solid rgba(var(--rgb-accent), .18); }

header, .header, .navbar {
    background: linear-gradient(180deg, rgba(250,248,243,.94), rgba(250,248,243,.82));
    backdrop-filter: blur(14px);
    box-shadow: 0 1px 2px rgba(45,45,45,.04), 0 16px 28px -20px rgba(51,77,54,.18);
}

/* 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: 1.125rem; --space-gap: .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; }
}