:root {
    --color-primary: #b45309;
    --color-primary-dark: #7c2d12;
    --color-accent: #f59e0b;
    --color-surface: #f8fafc;
    --color-text: #0f172a;
    --rgb-primary: 180,83,9;
    --rgb-accent: 245,158,11;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 14px;
    --radius-xl: 16px;
    --shadow-sm: 0 10px 22px rgba(2, 6, 23, 0.08);
    --shadow-md: 0 16px 34px rgba(2, 6, 23, 0.12);
    --shadow-lg: 0 26px 60px rgba(2, 6, 23, 0.16);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.85rem;
    --transition: 240ms cubic-bezier(0.2, 0.9, 0.2, 1);
    --heading-weight: 800;
    --body-line-height: 1.75;
    --shadow-accent: 0 0 24px rgba(245,158,11,.38);
    --shadow-accent-strong: 0 0 32px rgba(245,158,11,.58);
    --sidebar: #252e3a;
    --sidebar-2: #1f2834;
    --card-stroke: rgba(15, 23, 42, 0.10);
    --card-fill: rgba(248, 250, 252, 0.92);
}

body { color: var(--color-text); line-height: var(--body-line-height); background: radial-gradient(900px 500px at 15% 0%, rgba(245,158,11,0.10), transparent 60%), radial-gradient(800px 520px at 85% 10%, rgba(180,83,9,0.10), transparent 55%); }
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: 0 1px 0 rgba(255,255,255,.55) inset, 0 0 0 1px var(--card-stroke) inset, var(--shadow-sm), 0 0 0 rgba(245,158,11,0); padding: var(--space-card); transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition); background: linear-gradient(180deg, rgba(248,250,252,.96), rgba(248,250,252,.86)); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition); box-shadow: 0 1px 0 rgba(255,255,255,.55) inset, 0 10px 22px rgba(2, 6, 23, 0.08); border: 1px solid rgba(180,83,9,0.20); }
a:not([class]) { color: var(--color-primary); transition: color var(--transition), text-shadow var(--transition), filter var(--transition); text-decoration-thickness: 2px; text-underline-offset: 3px; }
h1, h2, h3, h4, .hero-content, .card, .btn { text-shadow: 0 1px 0 rgba(255,255,255,.55); }

section:first-of-type, .hero, [class*="hero"] { filter: saturate(1.02); }

@keyframes accentPulse {
    0% { box-shadow: var(--shadow-sm), 0 0 0 rgba(245,158,11,0); }
    50% { box-shadow: var(--shadow-sm), var(--shadow-accent); }
    100% { box-shadow: var(--shadow-sm), 0 0 0 rgba(245,158,11,0); }
}

@keyframes haloFlicker {
    0% { filter: drop-shadow(0 0 0 rgba(245,158,11,0)); }
    45% { filter: drop-shadow(0 0 16px rgba(245,158,11,.45)); }
    100% { filter: drop-shadow(0 0 0 rgba(245,158,11,0)); }
}

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

/* news: masonry-2 */
/* 两列瀑布流 */
                .news-grid { column-count: 2; column-gap: var(--space-gap); }
                .news-grid .card { break-inside: avoid; margin-bottom: var(--space-gap); border-radius: var(--radius-xl); background: linear-gradient(180deg, rgba(248,250,252,.97), rgba(248,250,252,.84)); }
                .news-grid .card:hover { animation: accentPulse 1100ms ease-in-out both; }

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }
.feature-list .card { border-radius: var(--radius-lg); background: linear-gradient(180deg, rgba(248,250,252,.96), rgba(248,250,252,.82)); }

/* 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 20% 10%, rgba(245,158,11,.35), transparent 60%),
                    radial-gradient(820px 520px at 80% 30%, rgba(180,83,9,.28), transparent 58%),
                    linear-gradient(135deg, var(--sidebar-2), var(--sidebar));
                    border-bottom: 1px solid rgba(255,255,255,.08);
                }
                .hero-content { position: relative; z-index: 1; background: linear-gradient(180deg, rgba(15,23,42,.00), rgba(15,23,42,.00)); }
                .hero::before { content: ""; position: absolute; inset: 0; border-radius: 0; background: radial-gradient(closest-side at 30% 30%, rgba(245,158,11,.18), transparent 60%); opacity: .9; pointer-events: none; }

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
                .testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }
                .testimonial-list .card { background: linear-gradient(180deg, rgba(248,250,252,.94), rgba(248,250,252,.80)); border-radius: var(--radius-xl); }

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 20s linear infinite; }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
                .partner-grid .card { background: linear-gradient(180deg, rgba(248,250,252,.96), rgba(248,250,252,.82)); box-shadow: 0 1px 0 rgba(255,255,255,.5) inset, 0 14px 30px rgba(2, 6, 23, 0.10); }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }
                .faq-wrapper .card:first-child { background: linear-gradient(180deg, rgba(248,250,252,.96), rgba(248,250,252,.84)); }
                .faq-wrapper .card:last-child { background: linear-gradient(180deg, rgba(37,46,58,.95), rgba(37,46,58,.86)); box-shadow: 0 1px 0 rgba(255,255,255,.08) inset, 0 0 0 1px rgba(245,158,11,.18) inset, 0 18px 44px rgba(2,6,23,.22); }
                .faq-wrapper .card:last-child { color: rgba(248,250,252,.92); }
                .faq-wrapper .card:last-child a:not([class]) { color: var(--color-accent); }
                .faq-wrapper .card:last-child a:not([class]):hover { filter: saturate(1.1); }

/* stats: big-number */
/* 大数字居中 */
                .stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
                .stats-grid .stat-value { font-size: 3rem; text-shadow: 0 10px 28px rgba(245,158,11,.22), 0 1px 0 rgba(255,255,255,.55); }
                .stats-grid .card { border-radius: var(--radius-xl); background: linear-gradient(180deg, rgba(248,250,252,.98), rgba(248,250,252,.84)); }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }
.cta-inner .card { background: linear-gradient(180deg, rgba(248,250,252,.96), rgba(248,250,252,.82)); border-radius: var(--radius-xl); }

/* 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(-6px);
    box-shadow:
        0 1px 0 rgba(255,255,255,.65) inset,
        0 0 0 1px rgba(245,158,11,.26) inset,
        0 22px 52px rgba(2, 6, 23, 0.18),
        0 0 24px rgba(245,158,11,.42);
    animation: haloFlicker 900ms ease-in-out both;
}
a:not([class]):hover {
    color: #f59e0b;
    text-shadow: 0 0 18px rgba(245,158,11,.55);
    filter: saturate(1.12);
}
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(900px 520px at 15% 5%, rgba(245,158,11,.32), transparent 58%),
        radial-gradient(760px 520px at 85% 20%, rgba(180,83,9,.26), transparent 60%),
        linear-gradient(135deg, #1b2430, #252e3a);
}
header, .header, .navbar {
    box-shadow:
        0 1px 0 rgba(255,255,255,.10) inset,
        0 10px 28px rgba(2, 6, 23, 0.18),
        0 0 18px rgba(245,158,11,.12);
    border-bottom: 1px solid rgba(245,158,11,.10);
    background: linear-gradient(180deg, rgba(37,46,58,.98), rgba(37,46,58,.90));
}

/* 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; }
    .hero { min-height: 60vh; }
}
@media (max-width: 640px) {
    :root { --space-section: 2rem; --space-card: 1rem; --space-gap: 0.85rem; }
    .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; }
    .hero { background:
        radial-gradient(700px 420px at 20% 5%, rgba(245,158,11,.28), transparent 58%),
        radial-gradient(700px 420px at 85% 35%, rgba(180,83,9,.22), transparent 60%),
        linear-gradient(135deg, #1b2430, #252e3a);
    }
}