:root {
    --color-primary: #ff2d55;
    --color-primary-dark: #a8001f;
    --color-accent: #00d4ff;
    --color-surface: #0b1220;
    --color-text: #eaf2ff;
    --rgb-primary: 255,45,85;
    --rgb-accent: 0,212,255;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 14px;

    --shadow-sm:
        0 1px 0 rgba(255,255,255,.10),
        0 6px 16px rgba(0,0,0,.35);
    --shadow-md:
        0 10px 24px rgba(0,0,0,.38),
        0 2px 0 rgba(255,255,255,.08);
    --shadow-lg:
        0 26px 60px rgba(0,0,0,.42),
        0 10px 22px rgba(0,0,0,.28);

    --shadow-glow:
        0 0 22px rgba(0, 212, 255, .38),
        0 0 44px rgba(0, 212, 255, .18);

    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 520ms cubic-bezier(0.16, 1, 0.3, 1);
    --heading-weight: 700;
    --body-line-height: 1.6;
}

body { color: var(--color-text); line-height: var(--body-line-height); }
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-xl);
    background:
        linear-gradient(180deg, rgba(255,255,255,.08) 0%, rgba(255,255,255,.03) 100%);
    border: 1px solid rgba(255,255,255,.10);
    box-shadow:
        0 14px 34px rgba(0,0,0,.42),
        0 3px 0 rgba(255,255,255,.08),
        0 0 0 rgba(0, 212, 255, 0);
    padding: var(--space-card);
    transition:
        transform 520ms cubic-bezier(0.16, 1, 0.3, 1),
        box-shadow 520ms cubic-bezier(0.16, 1, 0.3, 1),
        background 520ms cubic-bezier(0.16, 1, 0.3, 1),
        border-color 520ms cubic-bezier(0.16, 1, 0.3, 1);
}

.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: 999px;
    transition:
        transform 520ms cubic-bezier(0.16, 1, 0.3, 1),
        box-shadow 520ms cubic-bezier(0.16, 1, 0.3, 1),
        background 520ms cubic-bezier(0.16, 1, 0.3, 1),
        color 520ms cubic-bezier(0.16, 1, 0.3, 1),
        border-color 520ms cubic-bezier(0.16, 1, 0.3, 1);
}

a:not([class]) { color: var(--color-primary); transition: var(--transition); }
a:not([class]):focus { outline: 2px solid rgba(0, 212, 255, .45); outline-offset: 3px; }

@keyframes cardGlowPulse {
    0% { box-shadow: 0 14px 34px rgba(0,0,0,.42), 0 3px 0 rgba(255,255,255,.08), 0 0 0 rgba(0, 212, 255, 0); }
    50% {
        box-shadow:
            0 18px 44px rgba(0,0,0,.46),
            0 3px 0 rgba(255,255,255,.10),
            0 0 26px rgba(0, 212, 255, .44),
            0 0 58px rgba(0, 212, 255, .22);
    }
    100% { box-shadow: 0 14px 34px rgba(0,0,0,.42), 0 3px 0 rgba(255,255,255,.08), 0 0 0 rgba(0, 212, 255, 0); }
}

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

/* news: grid-4 */
/* 四列紧凑网格 */
                .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 0.8); }

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

/* hero: overlay */
/* 全屏背景+文字覆盖 */
                .hero { position: relative; min-height: 70vh; display: flex; align-items: center; }
                .hero-content { position: relative; z-index: 1; }

/* testimonials: carousel */
/* 单条轮播 */
                .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: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
            .page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 212, 255, .38);
    box-shadow:
        0 30px 70px rgba(0,0,0,.46),
        0 10px 22px rgba(0,0,0,.22),
        0 0 24px rgba(0, 212, 255, .48),
        0 0 56px rgba(0, 212, 255, .24);
    animation: cardGlowPulse 1.7s cubic-bezier(0.16, 1, 0.3, 1) both;
}

a:not([class]):hover { color: rgba(0, 212, 255, .95); text-shadow: 0 0 16px rgba(0, 212, 255, .35); }

header, .header, .navbar {
    box-shadow:
        0 8px 22px rgba(0,0,0,.35),
        0 1px 0 rgba(255,255,255,.08),
        0 0 26px rgba(255,45,85,.12);
    border-bottom: 1px solid rgba(255,255,255,.08);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: box-shadow 520ms cubic-bezier(0.16, 1, 0.3, 1), border-color 520ms cubic-bezier(0.16, 1, 0.3, 1), background 520ms cubic-bezier(0.16, 1, 0.3, 1);
}

header:hover, .header:hover, .navbar:hover {
    box-shadow:
        0 16px 38px rgba(0,0,0,.44),
        0 2px 0 rgba(255,255,255,.10),
        0 0 34px rgba(0, 212, 255, .18);
    border-bottom-color: rgba(0, 212, 255, .28);
}

/* 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; }
}