:root {
    --color-primary: #005a7a;
    --color-primary-dark: #023047;
    --color-accent: #ffb703;
    --color-surface: #fff4e6;
    --color-text: #0f172a;
    --rgb-primary: 0,90,122;
    --rgb-accent: 255,183,3;
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 6px;
    --radius-xl: 8px;
    --shadow-sm: 0 1px 0 rgba(2,48,71,.16);
    --shadow-md:
        0 1px 0 rgba(2,48,71,.10),
        0 10px 24px rgba(2,48,71,.08),
        0 2px 6px rgba(255,183,3,.10);
    --shadow-lg:
        0 1px 0 rgba(2,48,71,.14),
        0 14px 34px rgba(2,48,71,.12),
        0 6px 16px rgba(255,183,3,.14);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 260ms cubic-bezier(.2,.9,.2,1);
    --heading-weight: 800;
    --body-line-height: 1.65;
}

body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(180deg, rgba(255,244,230,.65) 0%, rgba(255,255,255,0) 55%), #ffffff; }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 1px 0 rgba(2,48,71,.08); }
section, .section {
    padding-top: var(--space-section);
    padding-bottom: var(--space-section);
    background:
        linear-gradient(180deg, rgba(255,255,255,.92) 0%, rgba(255,255,255,.70) 100%),
        radial-gradient(1200px 420px at 50% 0%, rgba(255,183,3,.14) 0%, rgba(255,183,3,0) 60%);
    border-top: 1px solid rgba(var(--rgb-primary), .10);
}
.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow:
        0 1px 0 rgba(2,48,71,.10),
        0 10px 26px rgba(2,48,71,.10),
        0 2px 8px rgba(0,90,122,.08);
    padding: var(--space-card);
    transition:
        transform 220ms cubic-bezier(.2,.9,.2,1),
        box-shadow 220ms cubic-bezier(.2,.9,.2,1),
        background-color 220ms cubic-bezier(.2,.9,.2,1),
        border-color 220ms cubic-bezier(.2,.9,.2,1);
    background:
        linear-gradient(180deg, rgba(255,255,255,.96) 0%, rgba(255,255,255,.86) 100%);
    border-color: rgba(var(--rgb-primary), .14);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: background-color 220ms cubic-bezier(.2,.9,.2,1), transform 220ms cubic-bezier(.2,.9,.2,1), box-shadow 220ms cubic-bezier(.2,.9,.2,1), border-color 220ms cubic-bezier(.2,.9,.2,1), color 220ms cubic-bezier(.2,.9,.2,1);
}
a:not([class]) {
    color: var(--color-primary);
    transition: color 220ms cubic-bezier(.2,.9,.2,1), text-shadow 220ms cubic-bezier(.2,.9,.2,1);
    text-shadow: 0 1px 0 rgba(2,48,71,.06);
}

/* ========== 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; }
                .news-grid > * {
    background:
        linear-gradient(180deg, rgba(255,255,255,.94) 0%, rgba(255,255,255,.82) 100%),
        radial-gradient(700px 280px at 10% 0%, rgba(0,180,216,.10) 0%, rgba(0,180,216,0) 60%);
    border-radius: var(--radius-lg);
}

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }
.feature-list > * {
    border-radius: var(--radius-md);
    box-shadow:
        0 1px 0 rgba(2,48,71,.08),
        0 10px 22px rgba(2,48,71,.06);
}

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }
.hero-content * { text-shadow: 0 1px 0 rgba(2,48,71,.06); }

/* testimonials: stacked */
/* 垂直堆叠 */
                .testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; }
                .testimonial-list > * {
    background:
        linear-gradient(180deg, rgba(255,255,255,.95) 0%, rgba(255,244,230,.70) 100%);
    border-radius: var(--radius-md);
    box-shadow:
        0 1px 0 rgba(2,48,71,.08),
        0 12px 26px rgba(2,48,71,.07);
}

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; }
.partner-grid > * { filter: saturate(.98); opacity: .92; }
.partner-grid > *:hover { opacity: 1; }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }
.faq-list > * {
    border-radius: var(--radius-md);
    background:
        linear-gradient(180deg, rgba(255,255,255,.96) 0%, rgba(255,244,230,.55) 100%);
    box-shadow:
        0 1px 0 rgba(2,48,71,.08),
        0 10px 22px rgba(2,48,71,.06);
}

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid > * {
    border-radius: var(--radius-md);
    box-shadow:
        0 1px 0 rgba(2,48,71,.07),
        0 10px 20px rgba(2,48,71,.05);
    background:
        linear-gradient(180deg, rgba(255,255,255,.94) 0%, rgba(255,255,255,.78) 100%),
        radial-gradient(500px 220px at 50% 0%, rgba(255,183,3,.12) 0%, rgba(255,183,3,0) 60%);
}

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }
.cta-inner * { text-shadow: 0 1px 0 rgba(2,48,71,.06); }

/* 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(-3px);
    box-shadow:
        0 1px 0 rgba(2,48,71,.12),
        0 18px 40px rgba(2,48,71,.16),
        0 7px 18px rgba(255,183,3,.20);
    border-color: rgba(var(--rgb-primary), .24);
}
a:not([class]):hover {
    color: var(--color-accent);
    text-shadow:
        0 1px 0 rgba(255,183,3,.25),
        0 10px 22px rgba(255,183,3,.20);
}
.card { border: 1px solid rgba(var(--rgb-primary), .14); }

/* 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-sm: 2px; --radius-md: 4px; --radius-lg: 6px; --transition: 220ms cubic-bezier(.2,.9,.2,1); }
    .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; }
}