:root {
    --color-primary: #0b1220;
    --color-primary-dark: #050814;
    --color-accent: #7c3aed;
    --color-surface: #fff7e6;
    --color-text: #0b1220;
    --rgb-primary: 11,18,32;
    --rgb-accent: 124,58,237;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 18px;
    --radius-xl: 28px;

    --shadow-sm: 0 1px 0 rgba(255,255,255,.45), 0 10px 30px rgba(11,18,32,.08);
    --shadow-md: 0 1px 0 rgba(255,255,255,.6), 0 14px 40px rgba(11,18,32,.12), 0 3px 10px rgba(124,58,237,.10);
    --shadow-lg: 0 2px 0 rgba(255,255,255,.55), 0 26px 75px rgba(11,18,32,.18), 0 10px 28px rgba(124,58,237,.18);

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

    --transition: 0.52s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 700;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background:
        radial-gradient(1200px 800px at 15% 10%, rgba(124,58,237,.10), rgba(124,58,237,0) 60%),
        radial-gradient(900px 600px at 90% 30%, rgba(59,130,246,.10), rgba(59,130,246,0) 55%),
        linear-gradient(180deg, #ffffff 0%, #fffdf7 35%, #fff7e6 100%);
}

h1, h2, h3, h4 { font-weight: var(--heading-weight); }

section, .section {
    padding-top: var(--space-section);
    padding-bottom: var(--space-section);
    background:
        linear-gradient(180deg, rgba(255,255,255,.86) 0%, rgba(255,255,255,.78) 100%);
}

.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-card);
    transition:
        transform var(--transition),
        box-shadow var(--transition),
        border-color var(--transition),
        background var(--transition),
        color var(--transition);
    background:
        linear-gradient(180deg, rgba(255,255,255,.92) 0%, rgba(255,255,255,.75) 100%);
}

.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition:
        transform var(--transition),
        box-shadow var(--transition),
        background var(--transition),
        border-color var(--transition),
        color var(--transition),
        filter var(--transition);
    border-color: rgba(var(--rgb-accent), .35);
}

a:not([class]) {
    color: #4f46e5;
    transition: var(--transition);
    text-shadow: 0 1px 0 rgba(255,255,255,.55);
}

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

/* news: list-view */
/* 列表模式 (图左文右) */
                .news-grid { display: flex; flex-direction: column; gap: var(--space-gap); }
                .news-grid .card {
    display: grid;
    grid-template-columns: 280px 1fr;

    background:
        linear-gradient(135deg, rgba(255,255,255,.92) 0%, rgba(255,255,255,.72) 55%, rgba(255,247,230,.85) 100%);
    border-radius: calc(var(--radius-lg) - 2px);
    border: 1px solid rgba(var(--rgb-primary), .10);
    box-shadow:
        0 1px 0 rgba(255,255,255,.65),
        0 18px 55px rgba(11,18,32,.12),
        0 10px 26px rgba(124,58,237,.14);
}

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }
.feature-list .card {
    background:
        radial-gradient(700px 260px at 15% 0%, rgba(124,58,237,.14), rgba(124,58,237,0) 60%),
        linear-gradient(180deg, rgba(255,255,255,.92) 0%, rgba(255,255,255,.74) 100%);
    border: 1px solid rgba(var(--rgb-primary), .10);
}

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }
.hero-content * {
    text-shadow: 0 1px 0 rgba(255,255,255,.4);
}

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
                .testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }
.testimonial-list > * .card {
    background:
        linear-gradient(180deg, rgba(255,255,255,.92) 0%, rgba(255,255,255,.70) 100%),
        radial-gradient(420px 180px at 90% 0%, rgba(124,58,237,.20), rgba(124,58,237,0) 55%);
    border: 1px solid rgba(var(--rgb-primary), .10);
    box-shadow:
        0 1px 0 rgba(255,255,255,.62),
        0 20px 60px rgba(11,18,32,.14),
        0 8px 22px rgba(124,58,237,.12);
}

/* 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 {
    background:
        linear-gradient(180deg, rgba(255,247,230,.92) 0%, rgba(255,255,255,.68) 100%);
    border: 1px solid rgba(var(--rgb-primary), .09);
    box-shadow:
        0 1px 0 rgba(255,255,255,.55),
        0 16px 45px rgba(11,18,32,.10),
        inset 0 1px 0 rgba(255,255,255,.35);
}

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-list .card {
    background:
        linear-gradient(135deg, rgba(255,255,255,.92) 0%, rgba(255,247,230,.86) 65%, rgba(255,255,255,.74) 100%);
    border: 1px solid rgba(var(--rgb-primary), .10);
}

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid .card {
    background:
        radial-gradient(520px 220px at 50% 0%, rgba(59,130,246,.18), rgba(59,130,246,0) 60%),
        linear-gradient(180deg, rgba(255,255,255,.92) 0%, rgba(255,255,255,.72) 100%);
    border: 1px solid rgba(var(--rgb-primary), .10);
}

/* cta: full-bg */
.cta-section {
    background:
        linear-gradient(135deg, #0b1220 0%, #1d1037 45%, #0b1220 100%);
    color: #ffffff;
    padding: 4rem 2rem;

    position: relative;
    overflow: hidden;
    border-top-left-radius: var(--radius-xl);
    border-top-right-radius: var(--radius-xl);

    box-shadow:
        0 1px 0 rgba(255,255,255,.08) inset,
        0 34px 110px rgba(0,0,0,.28),
        0 12px 40px rgba(124,58,237,.22);
}

.cta-section::before {
    content: "";
    position: absolute;
    inset: -2px;
    background:
        radial-gradient(900px 420px at 20% 10%, rgba(124,58,237,.35), rgba(124,58,237,0) 55%),
        radial-gradient(700px 360px at 90% 30%, rgba(59,130,246,.22), rgba(59,130,246,0) 52%),
        linear-gradient(180deg, rgba(255,255,255,.06) 0%, rgba(255,255,255,0) 100%);
    opacity: .95;
    pointer-events: none;
}

.cta-section::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(255,255,255,.10) 0%, rgba(255,255,255,0) 22%, rgba(255,255,255,.08) 55%, rgba(255,255,255,0) 78%, rgba(255,255,255,.10) 100%);
    opacity: .35;
    mix-blend-mode: overlay;
    pointer-events: none;
}

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-4px);
    box-shadow:
        0 2px 0 rgba(255,255,255,.62),
        0 34px 100px rgba(11,18,32,.22),
        0 12px 34px rgba(124,58,237,.22),
        0 0 0 1px rgba(var(--rgb-accent), .18) inset;
    background:
        linear-gradient(180deg, rgba(255,255,255,.94) 0%, rgba(255,255,255,.76) 100%),
        radial-gradient(600px 220px at 20% 0%, rgba(124,58,237,.18), rgba(124,58,237,0) 55%);
}

a:not([class]):hover {
    color: #6d28d9;
    text-shadow: 0 2px 12px rgba(109,40,217,.28), 0 1px 0 rgba(255,255,255,.45);
}

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

header, .header, .navbar {
    background:
        linear-gradient(180deg, rgba(255,255,255,.55) 0%, rgba(255,255,255,.25) 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(11,18,32,.08);
    box-shadow:
        0 1px 0 rgba(255,255,255,.6) inset,
        0 18px 55px rgba(11,18,32,.06);
}

/* 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; }

    .card, [class*="card"] {
        border-radius: calc(var(--radius-md) + 2px);
        box-shadow:
            0 1px 0 rgba(255,255,255,.62),
            0 14px 40px rgba(11,18,32,.12),
            0 7px 18px rgba(124,58,237,.10);
        transition-duration: 0.48s;
    }
}