:root {
    --color-primary: #2a0f6d;
    --color-primary-dark: #1c0a4a;
    --color-accent: #f6c945;
    --color-surface: #f6f1ff;
    --color-text: #1b1430;
    --rgb-primary: 42,15,109;
    --rgb-accent: 246,201,69;
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 22px;
    --radius-xl: 28px;
    --shadow-sm: 0 3px 10px rgba(5, 6, 18, 0.08);
    --shadow-md: 0 6px 18px rgba(5, 6, 18, 0.10), 0 20px 42px -16px rgba(0, 0, 0, 0.22);
    --shadow-lg: 0 10px 26px rgba(4, 5, 16, 0.14), 0 30px 60px -26px rgba(0, 0, 0, 0.28);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.35s cubic-bezier(.2,.8,.2,1);
    --heading-weight: 700;
    --body-line-height: 1.75;

    --color-bg-stage: #0f0f1a;
    --color-glow: rgba(246, 201, 69, 0.35);
    --color-border: rgba(42, 15, 109, 0.14);
    --color-border-2: rgba(246, 201, 69, 0.18);
    --shadow-card-hover: 0 14px 34px rgba(6, 6, 22, 0.14), 0 40px 90px -55px rgba(42, 15, 109, 0.35), 0 8px 18px -10px rgba(246, 201, 69, 0.28);
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background: radial-gradient(1200px 700px at 50% -120px, rgba(42, 15, 109, 0.22) 0%, rgba(42, 15, 109, 0) 60%),
                radial-gradient(900px 600px at 15% 10%, rgba(246, 201, 69, 0.10) 0%, rgba(246, 201, 69, 0) 62%),
                linear-gradient(180deg, #0f0f1a 0%, #0f0f1a 35%, #121028 100%);
    -webkit-font-smoothing: antialiased;
    text-rendering: geometricPrecision;
}
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);
    padding: var(--space-card);
    transition: var(--transition);
    box-shadow: 0 6px 18px rgba(5, 6, 18, 0.10), 0 20px 42px -16px rgba(0,0,0,0.22);
    background:
        radial-gradient(900px 260px at 50% -80px, rgba(246, 201, 69, 0.12) 0%, rgba(246, 201, 69, 0) 60%),
        linear-gradient(180deg, rgba(255,255,255,0.78) 0%, rgba(243,232,255,0.62) 100%);
    border: 1px solid rgba(var(--rgb-primary), .10);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
}
a:not([class]) {
    color: #caa83a;
    transition: var(--transition);
    text-shadow: 0 1px 0 rgba(0,0,0,0.25);
}

/* ========== 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; }

/* 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 {
                    scroll-behavior: smooth;
                }
                .feature-list::-webkit-scrollbar { height: 10px; }
                .feature-list::-webkit-scrollbar-thumb {
                    background: linear-gradient(180deg, rgba(var(--rgb-primary), 0.35) 0%, rgba(var(--rgb-accent), 0.30) 100%);
                    border-radius: 999px;
                    border: 2px solid rgba(15,15,26,0.55);
                }
                .feature-list::-webkit-scrollbar-track {
                    background: rgba(255,255,255,0.06);
                    border-radius: 999px;
                }

/* 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); }
.testimonial-list {
    text-shadow: 0 1px 0 rgba(0,0,0,0.20);
}

/* 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 {
    filter: saturate(1.05);
}
.partner-grid > * {
    opacity: 0.95;
    transition: var(--transition);
}
.partner-grid > *:hover {
    opacity: 1;
    transform: translateY(-1px);
}

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-list {
    text-shadow: 0 1px 0 rgba(0,0,0,0.18);
}

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid {
    position: relative;
}
.stats-grid::before {
    content: "";
    position: absolute;
    inset: -24px -20px auto -20px;
    height: 120px;
    border-radius: 999px;
    background: radial-gradient(closest-side at 50% 50%, rgba(var(--rgb-primary), 0.18) 0%, rgba(var(--rgb-primary), 0) 70%);
    pointer-events: none;
}

/* cta: full-bg */
.cta-section {
    background: radial-gradient(1200px 500px at 50% 10%, rgba(246, 201, 69, 0.22) 0%, rgba(246, 201, 69, 0) 55%),
                radial-gradient(900px 420px at 15% 50%, rgba(114, 9, 183, 0.20) 0%, rgba(114, 9, 183, 0) 60%),
                linear-gradient(135deg, #2a0f6d 0%, #1c0a4a 55%, #12062e 100%);
    color: rgba(255,255,255,0.92);
    padding: 4rem 2rem;
    box-shadow: 0 18px 60px rgba(0,0,0,0.35);
    border-top: 1px solid rgba(246, 201, 69, 0.16);
    border-bottom: 1px solid rgba(246, 201, 69, 0.12);
}

/* Page Layout: wide */
/* 超宽 */
            .page-main { max-width: 1400px; margin: 0 auto; }
.page-main {
    max-width: 900px;
}

/* 条件性装饰 */
.card { border: 1px solid rgba(var(--rgb-primary), .10); }
header, .header, .navbar {
    box-shadow:
        0 2px 10px rgba(0,0,0,0.16),
        0 18px 44px -22px rgba(var(--rgb-primary), 0.35);
    border-bottom: 1px solid rgba(246, 201, 69, 0.10);
    background: rgba(15,15,26,0.65);
    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; }
    .page-main { max-width: 860px; }
}
@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; }
    .page-main { max-width: 720px; }
}

/* Interaction polish (visual only; layout unchanged) */
.card:hover, [class*="card"]:hover {
    box-shadow: var(--shadow-card-hover);
    border-color: rgba(var(--rgb-accent), .28);
}
a:hover:not([class]) {
    color: #f6c945;
    text-shadow: 0 0 18px rgba(246, 201, 69, 0.22);
}
:focus-visible {
    outline: 2px solid rgba(246, 201, 69, 0.45);
    outline-offset: 3px;
    border-radius: 12px;
}
::selection {
    background: rgba(var(--rgb-accent), 0.25);
    color: rgba(255,255,255,0.95);
}
input, textarea, select {
    caret-color: #f6c945;
    accent-color: #f6c945;
}