:root {
    --color-primary: #5b21b6;
    --color-primary-dark: #1f1146;
    --color-accent: #22c55e;
    --color-surface: #f5f3ff;
    --color-text: #120b2e;

    --rgb-primary: 91,33,182;
    --rgb-accent: 34,197,94;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 18px;
    --radius-xl: 24px;

    --shadow-sm: 0 3px 8px rgba(14, 10, 40, 0.10);
    --shadow-md: 0 6px 16px rgba(14, 10, 40, 0.12), 0 1px 0 rgba(255,255,255,0.45) inset;
    --shadow-lg: 0 10px 30px rgba(10, 6, 30, 0.16), 0 2px 0 rgba(255,255,255,0.48) inset;

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

    --transition: 0.38s cubic-bezier(0.16, 1, 0.3, 1);
    --heading-weight: 800;
    --body-line-height: 1.6;

    --border-strong: rgba(91, 33, 182, 0.35);
    --border-strong-2: rgba(34, 197, 94, 0.35);
    --focus-ring: rgba(34, 197, 94, 0.45);
}

body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background: radial-gradient(1200px 600px at 20% -10%, rgba(91,33,182,0.16), transparent 60%),
                radial-gradient(900px 500px at 85% 10%, rgba(34,197,94,0.14), transparent 55%),
                linear-gradient(180deg, #ffffff, #fbfbff);
}

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 4px 10px rgba(8, 4, 24, 0.06),
        0 14px 34px rgba(8, 4, 24, 0.10),
        0 1px 0 rgba(255,255,255,0.55) inset;
    padding: var(--space-card);
    transition:
        transform 0.38s cubic-bezier(0.16, 1, 0.3, 1),
        box-shadow 0.38s cubic-bezier(0.16, 1, 0.3, 1),
        background-color 0.38s cubic-bezier(0.16, 1, 0.3, 1);
    border-style: solid;
    border-width: 1px;
    border-color: rgba(91, 33, 182, 0.20);
    background:
        linear-gradient(180deg, rgba(255,255,255,0.92), rgba(255,255,255,0.72));
}

.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: 0.38s cubic-bezier(0.16, 1, 0.3, 1);
    border-style: solid;
    border-width: 1px;
    border-color: rgba(91, 33, 182, 0.35);
    box-shadow:
        0 3px 10px rgba(17, 10, 45, 0.10),
        0 1px 0 rgba(255,255,255,0.55) inset;
    background: linear-gradient(180deg, rgba(91,33,182,0.10), rgba(91,33,182,0.04));
}

a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}

:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 2px;
}

/* ========== 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-color: rgba(34, 197, 94, 0.26);
    background:
        radial-gradient(800px 240px at 20% -10%, rgba(34,197,94,0.18), transparent 55%),
        linear-gradient(180deg, rgba(255,255,255,0.92), rgba(255,255,255,0.70));
}

/* features: centered */
/* 居中大卡片 */
.feature-list {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: calc(var(--space-gap) * 2);
    max-width: 720px;
    margin: 0 auto;
}
.feature-list > * {
    border-color: rgba(91, 33, 182, 0.28);
    background:
        linear-gradient(135deg, rgba(91,33,182,0.10), rgba(34,197,94,0.08)),
        linear-gradient(180deg, rgba(255,255,255,0.92), rgba(255,255,255,0.70));
}

/* hero: overlay */
/* 全屏背景+文字覆盖 */
.hero {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
    background:
        radial-gradient(1100px 650px at 15% 20%, rgba(91,33,182,0.28), transparent 55%),
        radial-gradient(900px 520px at 80% 20%, rgba(34,197,94,0.22), transparent 58%),
        linear-gradient(135deg, var(--color-primary-dark), #0b0526);
    border-bottom: 1px solid rgba(255,255,255,0.10);
}
.hero::before {
    content: "";
    position: absolute;
    inset: -2px;
    background:
        conic-gradient(from 180deg at 50% 50%, rgba(34,197,94,0.28), rgba(91,33,182,0.30), rgba(255,255,255,0.00));
    filter: blur(18px);
    opacity: 0.75;
    pointer-events: none;
}
.hero-content { position: relative; z-index: 1; }
.hero-content, .hero-content * {
    text-shadow: 0 2px 10px rgba(0,0,0,0.35);
}

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
.testimonial-list > * {
    break-inside: avoid;
    margin-bottom: var(--space-gap);
    border-color: rgba(91, 33, 182, 0.25);
    background:
        radial-gradient(900px 260px at 85% -10%, rgba(91,33,182,0.22), transparent 55%),
        linear-gradient(180deg, rgba(255,255,255,0.92), rgba(255,255,255,0.68));
}

/* partners: grid-4 */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: calc(var(--space-gap) * 1.5);
    align-items: center;
}
.partner-grid .card, .partner-grid [class*="card"] {
    border-radius: 20px;
    border-color: rgba(34, 197, 94, 0.22);
    background:
        linear-gradient(180deg, rgba(34,197,94,0.10), rgba(255,255,255,0.68));
    box-shadow:
        0 5px 14px rgba(12, 7, 34, 0.10),
        0 18px 40px rgba(12, 7, 34, 0.08);
}

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
.faq-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}
.faq-wrapper .card, .faq-wrapper [class*="card"] {
    border-radius: var(--radius-xl);
    border-color: rgba(91, 33, 182, 0.24);
    background:
        linear-gradient(145deg, rgba(91,33,182,0.10), rgba(34,197,94,0.07)),
        linear-gradient(180deg, rgba(255,255,255,0.92), rgba(255,255,255,0.68));
}

/* 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; }
.stats-grid .card, .stats-grid [class*="card"] {
    border-color: rgba(34, 197, 94, 0.26);
    background:
        radial-gradient(900px 240px at 20% -10%, rgba(34,197,94,0.22), transparent 55%),
        linear-gradient(180deg, rgba(255,255,255,0.92), rgba(255,255,255,0.68));
}

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }
.cta-inner .card, .cta-inner [class*="card"] {
    border-color: rgba(91,33,182,0.24);
    background:
        linear-gradient(135deg, rgba(91,33,182,0.14), rgba(34,197,94,0.10)),
        linear-gradient(180deg, rgba(255,255,255,0.92), rgba(255,255,255,0.65));
}

/* 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 6px 16px rgba(8, 4, 24, 0.10),
        0 26px 60px rgba(8, 4, 24, 0.12),
        0 1px 0 rgba(255,255,255,0.62) inset;
}

.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(1200px 720px at 20% 0%, rgba(34,197,94,0.26), transparent 58%),
        radial-gradient(980px 560px at 90% 20%, rgba(91,33,182,0.30), transparent 55%),
        linear-gradient(135deg, var(--color-primary-dark), #090421);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

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; }
    .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; }
}

/* Decorative asymmetry enhancements (visual only) */
.news-grid .card:nth-child(3n+1),
.testimonial-list > *:nth-child(3n+1) {
    border-radius: 26px 14px 22px 14px;
}
.news-grid .card:nth-child(3n+2),
.testimonial-list > *:nth-child(3n+2) {
    border-radius: 14px 26px 14px 22px;
}
.news-grid .card:nth-child(3n+3),
.testimonial-list > *:nth-child(3n+3) {
    border-radius: 18px 20px 26px 12px;
}

input, textarea, select {
    caret-color: var(--color-accent);
    accent-color: var(--color-accent);
    opacity: 1;
}