:root {
    --color-primary: #0f766e;
    --color-primary-dark: #0b5b55;
    --color-accent: #7c3aed;
    --color-surface: #f6f7fb;
    --color-text: #0a1222;
    --rgb-primary: 15,118,110;
    --rgb-accent: 124,58,237;
    --radius-sm: 0px;
    --radius-md: 6px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    --shadow-sm: 0 1px 0 rgba(10,18,34,.06), 0 8px 20px rgba(15,118,110,.10);
    --shadow-md: 0 2px 0 rgba(10,18,34,.05), 0 14px 34px rgba(15,118,110,.12), 0 2px 10px rgba(124,58,237,.08);
    --shadow-lg: 0 3px 0 rgba(10,18,34,.06), 0 22px 60px rgba(15,118,110,.18), 0 10px 26px rgba(124,58,237,.12);

    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;

    --transition: 0.55s cubic-bezier(.2,.85,.2,1);
    --heading-weight: 700;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: radial-gradient(1200px 600px at 20% -10%, rgba(124,58,237,.10), transparent 55%), radial-gradient(900px 540px at 90% 10%, rgba(15,118,110,.12), transparent 50%), linear-gradient(#fbfcff, var(--color-surface)); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); letter-spacing: -0.01em; }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] {
    border-radius: var(--radius-xl);
    padding: var(--space-card);
    transition: var(--transition);
    background:
        linear-gradient(180deg, rgba(255,255,255,.98), rgba(255,255,255,.92)) padding-box,
        radial-gradient(110% 120% at 0% 0%, rgba(124,58,237,.18), transparent 55%) border-box;
    box-shadow:
        0 1px 0 rgba(10,18,34,.06),
        0 18px 40px rgba(15,118,110,.10),
        0 6px 18px rgba(124,58,237,.08);
    border: 1px solid rgba(10,18,34,.07);
    position: relative;
}
.card::before, [class*="card"]::before{
    content:"";
    position:absolute;
    inset:0;
    border-radius: inherit;
    pointer-events:none;
    opacity:.9;
    background:
        linear-gradient(135deg, rgba(124,58,237,.18), rgba(15,118,110,.14)) 0 0 / 120% 120% no-repeat,
        radial-gradient(600px 220px at 30% 0%, rgba(124,58,237,.20), transparent 55%);
    mix-blend-mode: multiply;
    filter: saturate(1.1);
}
.card::after, [class*="card"]::after{
    content:"";
    position:absolute;
    inset:-1px;
    border-radius: inherit;
    pointer-events:none;
    opacity:.35;
    background: linear-gradient(135deg, rgba(124,58,237,.65), rgba(15,118,110,.55));
    mask: linear-gradient(#000, #000) content-box, linear-gradient(#000, #000);
    -webkit-mask: linear-gradient(#000, #000) content-box, linear-gradient(#000, #000);
    padding: 1px;
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    background: linear-gradient(135deg, rgba(15,118,110,.08), rgba(124,58,237,.10));
    box-shadow:
        0 1px 0 rgba(10,18,34,.05),
        0 12px 26px rgba(15,118,110,.12);
    border: 1px solid rgba(15,118,110,.18);
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-shadow: 0 1px 0 rgba(255,255,255,.6); }
a:not([class]):hover { color: var(--color-primary-dark); }

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

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; } 
                .testimonial-list > * { flex: 0 0 100%; }

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

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }

/* Page Layout: narrow-centered */
/* 窄版居中 */
            .page-main { max-width: 860px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-6px);
    box-shadow:
        0 2px 0 rgba(10,18,34,.06),
        0 26px 75px rgba(15,118,110,.20),
        0 12px 34px rgba(124,58,237,.14);
    border-color: rgba(15,118,110,.22);
}
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(900px 320px at 15% 10%, rgba(124,58,237,.34), transparent 58%),
        radial-gradient(700px 300px at 85% 0%, rgba(15,118,110,.30), transparent 54%),
        linear-gradient(135deg, #0f766e, #1d4ed8);
    background-blend-mode: screen, screen, normal;
}
header, .header, .navbar { background: transparent; }

/* 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: 8px; --radius-lg: 12px; --radius-xl: 14px; --transition: 0.5s cubic-bezier(.2,.85,.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; }
}