:root {
    --color-primary: #1a2b49;
    --color-primary-dark: #071426;
    --color-accent: #ff4d6d;
    --color-surface: #fff7e6;
    --color-text: #071426;
    --rgb-primary: 7,20,38;
    --rgb-accent: 255,77,109;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --shadow-sm: 0 1px 0 rgba(var(--rgb-accent), .22);
    --shadow-md: 0 10px 30px rgba(7,20,38,.10), 0 2px 10px rgba(255,77,109,.10);
    --shadow-lg: 0 18px 50px rgba(7,20,38,.16), 0 10px 26px rgba(255,77,109,.14), 0 2px 8px rgba(7,20,38,.10);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 320ms cubic-bezier(0.2, 0.9, 0.25, 1);
    --heading-weight: 650;
    --body-line-height: 1.6;
    --strip-white: #ffffff;
    --strip-cream: #fff3d8;
    --strip-dark: #071426;
}

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-lg);
    box-shadow:
        0 1px 0 rgba(var(--rgb-accent), .18),
        0 16px 50px rgba(7,20,38,.10),
        0 10px 22px rgba(255,77,109,.10);
    padding: var(--space-card);
    transition:
        transform var(--transition),
        box-shadow 420ms cubic-bezier(0.18, 0.9, 0.2, 1),
        border-color var(--transition),
        background-color var(--transition),
        filter 420ms cubic-bezier(0.18, 0.9, 0.2, 1);
}

.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    accent-color: var(--color-accent);
}

a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-shadow: 0 0 0 rgba(var(--rgb-accent), 0);
}
a:not([class]):focus { outline: 2px solid rgba(255,77,109,.55); outline-offset: 3px; border-radius: 10px; }
a:not([class])::selection { background: rgba(255,77,109,.22); }

.card:hover, [class*="card"]:hover {
    transform: translateY(-4px);
    box-shadow:
        0 1px 0 rgba(var(--rgb-accent), .28),
        0 0 24px rgba(var(--rgb-accent), .40),
        0 0 48px rgba(var(--rgb-accent), .18),
        0 28px 70px rgba(7,20,38,.18);
    filter: saturate(1.02);
}
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 18px rgba(var(--rgb-accent), .35); }

.card { border: 1px solid rgba(var(--rgb-primary), .10); }

header, .header, .navbar {
    box-shadow:
        0 10px 26px rgba(7,20,38,.10),
        0 2px 10px rgba(255,77,109,.08);
}

.card:hover { animation: stripGlowPulse 1.35s ease-in-out infinite; }

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

/* news: featured-left */
                .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: 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: stacked */
/* 垂直堆叠 */
                .testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }

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

/* 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 0 22px rgba(var(--rgb-accent), .20); }

/* cta: card-style */
.cta-inner {
    background: linear-gradient(135deg, #fff7e6 0%, rgba(255,243,216,.85) 35%, rgba(255,77,109,.06) 100%);
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    box-shadow:
        inset 0 1px 0 rgba(255,255,255,.65),
        0 0 24px rgba(var(--rgb-accent), .18),
        0 18px 60px rgba(7,20,38,.12);
}

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

/* 条件性装饰 */
@keyframes stripGlowPulse {
    0%, 100% {
        box-shadow:
            0 1px 0 rgba(var(--rgb-accent), .26),
            0 0 18px rgba(var(--rgb-accent), .36),
            0 24px 70px rgba(7,20,38,.16);
    }
    50% {
        box-shadow:
            0 1px 0 rgba(var(--rgb-accent), .40),
            0 0 34px rgba(var(--rgb-accent), .58),
            0 30px 85px rgba(7,20,38,.20);
    }
}

/* 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; --radius-md: 10px; --radius-lg: 12px; }
    .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; }
}