:root {
    --color-primary: #3b1b6a;
    --color-primary-dark: #240a3f;
    --color-accent: #f7c948;
    --color-surface: #f7f3ff;
    --color-text: #1b1230;
    --rgb-primary: 59,27,106;
    --rgb-accent: 247,201,72;

    --radius-sm: 1px;
    --radius-md: 3px;
    --radius-lg: 4px;
    --radius-xl: 6px;

    --shadow-sm: 2px 2px 0 rgba(36, 10, 63, 0.22);
    --shadow-md: 4px 4px 0 rgba(36, 10, 63, 0.28), 0 10px 24px rgba(0,0,0,.18);
    --shadow-lg: 6px 6px 0 rgba(36, 10, 63, 0.34), 0 16px 36px rgba(0,0,0,.22);

    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;

    --transition: 0.15s cubic-bezier(.2,.8,.2,1);

    --heading-weight: 700;
    --body-line-height: 1.75;

    --outline: rgba(247, 201, 72, .95);
    --focus-ring: rgba(247, 201, 72, .55);
    --hero-glow: rgba(247, 201, 72, .22);
    --card-border: rgba(247, 201, 72, .22);
    --card-border-strong: rgba(247, 201, 72, .38);
    --text-shadow: 0 1px 0 rgba(0,0,0,.25);
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background: radial-gradient(1200px 700px at 50% -10%, rgba(247,201,72,.14), transparent 60%),
                radial-gradient(900px 500px at 10% 10%, rgba(59,27,106,.18), transparent 55%),
                #0f0f1a;
}
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: var(--text-shadow); }
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: transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition);
    border: 3px solid var(--card-border);
    background:
        linear-gradient(180deg, rgba(255,255,255,.85), rgba(255,255,255,.65));
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: background-color var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    border: 2px solid rgba(var(--rgb-accent), .65);
    background: linear-gradient(180deg, rgba(247,201,72,.98), rgba(247,201,72,.84));
    color: #1b1230;
    box-shadow: 3px 3px 0 rgba(36, 10, 63, 0.26);
}
a:not([class]) {
    color: var(--color-primary);
    transition: color var(--transition), text-shadow var(--transition);
}
a:not([class]):focus-visible,
.btn:focus-visible, button[class*="btn"]:focus-visible, a[class*="btn"]:focus-visible {
    outline: 2px solid var(--outline);
    outline-offset: 3px;
    box-shadow: 0 0 0 4px var(--focus-ring), 3px 3px 0 rgba(36, 10, 63, 0.26);
}

::selection { background: rgba(247,201,72,.28); color: #0f0f1a; }
input, textarea, select { accent-color: var(--color-accent); caret-color: var(--color-accent); }

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

/* news: list-view */
/* 列表模式 (图左文右) */
                .news-grid { display: flex; flex-direction: column; gap: var(--space-gap); }
                .news-grid .card { display: grid; grid-template-columns: 280px 1fr; background: linear-gradient(180deg, rgba(247,243,255,.95), rgba(247,243,255,.72)); }
                .news-grid .card { border-color: var(--card-border-strong); }

/* features: horizontal */
/* 水平滚动 */
                .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; }
                .feature-list .card { border-radius: var(--radius-md); border-color: rgba(var(--rgb-accent), .32); background:
                    linear-gradient(135deg, rgba(59,27,106,.08), rgba(247,201,72,.10)),
                    linear-gradient(180deg, rgba(255,255,255,.86), rgba(255,255,255,.66)); }

/* hero: overlay */
/* 全屏背景+文字覆盖 */
                .hero { position: relative; min-height: 70vh; display: flex; align-items: center; background:
                    radial-gradient(900px 520px at 50% 20%, rgba(247,201,72,.18), transparent 62%),
                    radial-gradient(720px 480px at 15% 70%, rgba(59,27,106,.30), transparent 60%),
                    linear-gradient(135deg, #0f0f1a, #140a27); }
                .hero-content { position: relative; z-index: 1; }
                .hero-content .card, .hero-content [class*="card"] {
                    background: linear-gradient(180deg, rgba(247,243,255,.92), rgba(247,243,255,.70));
                    border-color: rgba(var(--rgb-accent), .40);
                    box-shadow: 5px 5px 0 rgba(36, 10, 63, 0.34), 0 20px 44px rgba(0,0,0,.22);
                }

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
                .testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }
                .testimonial-list [class*="card"] { border-radius: var(--radius-sm); border-color: rgba(var(--rgb-accent), .26); background:
                    linear-gradient(135deg, rgba(247,201,72,.10), rgba(59,27,106,.10)),
                    linear-gradient(180deg, rgba(255,255,255,.84), rgba(255,255,255,.62)); }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }
                .partner-grid [class*="card"] { border-radius: 2px; border-color: rgba(var(--rgb-accent), .22); box-shadow: 4px 4px 0 rgba(36, 10, 63, 0.26); background:
                    linear-gradient(180deg, rgba(255,255,255,.78), rgba(255,255,255,.56)); }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }
                .stats-grid [class*="card"] { border-color: rgba(var(--rgb-accent), .28); box-shadow: var(--shadow-sm); background:
                    linear-gradient(180deg, rgba(247,243,255,.92), rgba(247,243,255,.70)); }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }
                .cta-inner [class*="card"] { border-radius: var(--radius-md); border-color: rgba(var(--rgb-accent), .42); box-shadow: 6px 6px 0 rgba(36, 10, 63, 0.34), 0 22px 48px rgba(0,0,0,.20); }

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(var(--rgb-accent), .58);
}
a:not([class]):hover {
    color: var(--color-accent);
    text-shadow: 0 0 0 rgba(0,0,0,0), 0 2px 0 rgba(0,0,0,.25);
}
.hero, [class*="hero"], section:first-of-type {
    background: linear-gradient(135deg, #0f0f1a 0%, #1a0d33 45%, #140a27 100%);
}
.card { border: 2px solid rgba(var(--rgb-accent), .26); }

header, .header, .navbar {
    background: linear-gradient(180deg, rgba(15,15,26,.55), rgba(15,15,26,.15));
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(247,201,72,.12);
}

/* 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; }
}