:root {
    --color-primary: #7c2d92;
    --color-primary-dark: #2a0a3a;
    --color-accent: #f97316;
    --color-surface: #fdf4ff;
    --color-text: #1a0b24;
    --rgb-primary: 124,45,146;
    --rgb-accent: 249,115,22;
    --radius-sm: 6px 20px;
    --radius-md: 12px 32px;
    --radius-lg: 24px 48px;
    --radius-xl: 36px 72px;
    --shadow-sm: 0 2px 5px rgba(124,45,146,.12), 0 1px 2px rgba(249,115,22,.10);
    --shadow-md: 0 8px 20px -6px rgba(124,45,146,.28), 0 3px 8px -2px rgba(249,115,22,.18);
    --shadow-lg: 0 24px 48px -16px rgba(124,45,146,.42), 0 10px 24px -10px rgba(249,115,22,.30), 0 0 0 1px rgba(124,45,146,.08);
    --space-section: 2.1rem;
    --space-card: 1.1rem;
    --space-gap: 0.8rem;
    --transition: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 700;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: var(--color-surface); background-image: radial-gradient(1100px 560px at 8% -12%, #f7e4ff 0%, rgba(247,228,255,0) 62%), linear-gradient(165deg, #ffffff 0%, #fdf4ff 48%, #fde9d8 100%); accent-color: var(--color-accent); caret-color: var(--color-accent); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 1px 0 rgba(255,255,255,.75), 0 2px 12px rgba(124,45,146,.14); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); background-image: linear-gradient(135deg, rgba(124,45,146,.06) 0%, rgba(168,85,247,.03) 42%, rgba(249,115,22,.07) 100%); background-color: transparent; }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); background-color: #ffffff; background-image: linear-gradient(158deg, #ffffff 0%, #fdf4ff 44%, #fdecdb 100%); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background-image: linear-gradient(132deg, #5b1d80 0%, #7c2d92 38%, #b44fd8 70%, #f97316 128%); color: #fffaf5; text-shadow: 0 1px 3px rgba(42,10,58,.45); box-shadow: 0 8px 18px -8px rgba(124,45,146,.55), inset 0 1px 0 rgba(255,255,255,.28); border-color: rgba(249,115,22,.60); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-color: rgba(249,115,22,.55); text-shadow: 0 1px 6px rgba(124,45,146,.18); }

/* ========== 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); background-image: linear-gradient(140deg, rgba(124,45,146,.10) 0%, rgba(168,85,247,.03) 55%, rgba(249,115,22,.10) 100%); background-color: rgba(253,244,255,.55); border-radius: var(--radius-lg); box-shadow: inset 0 0 0 1px rgba(124,45,146,.12); }

/* features: grid-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); background-image: radial-gradient(circle at 12% 0%, rgba(249,115,22,.12) 0%, rgba(249,115,22,0) 58%), linear-gradient(200deg, rgba(124,45,146,.07) 0%, rgba(255,255,255,0) 70%); background-color: rgba(255,247,237,.55); border-radius: var(--radius-xl); box-shadow: inset 0 0 0 1px rgba(249,115,22,.16); }

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; text-shadow: 0 2px 16px rgba(124,45,146,.10); }

/* testimonials: stacked */
/* 垂直堆叠 */
                .testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; background-image: linear-gradient(180deg, rgba(124,45,146,.08) 0%, rgba(249,115,22,.06) 100%); background-color: rgba(250,240,255,.50); border-radius: var(--radius-lg); box-shadow: inset 0 0 0 1px rgba(124,45,146,.10); }

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; background-image: linear-gradient(90deg, rgba(249,115,22,.10) 0%, rgba(255,255,255,0) 35%, rgba(124,45,146,.10) 100%); border-radius: var(--radius-sm); box-shadow: inset 0 0 0 1px rgba(124,45,146,.09); }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; background-image: linear-gradient(160deg, rgba(168,85,247,.08) 0%, rgba(253,244,255,.45) 55%, rgba(249,115,22,.09) 100%); border-radius: var(--radius-lg); box-shadow: inset 0 0 0 1px rgba(168,85,247,.14); }

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; background-image: linear-gradient(135deg, rgba(124,45,146,.14) 0%, rgba(124,45,146,.02) 48%, rgba(249,115,22,.14) 100%); background-color: rgba(255,248,242,.55); border-radius: var(--radius-md); box-shadow: inset 0 0 0 1px rgba(249,115,22,.18); }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; background-image: linear-gradient(120deg, rgba(91,29,128,.92) 0%, rgba(124,45,146,.90) 45%, rgba(249,115,22,.88) 130%); border-radius: var(--radius-lg); color: #fffaf5; text-shadow: 0 1px 8px rgba(42,10,58,.45); box-shadow: 0 18px 40px -18px rgba(124,45,146,.55), inset 0 1px 0 rgba(255,255,255,.20); }

/* 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(-4px); box-shadow: var(--shadow-lg); }
a:not([class]):hover { color: var(--color-accent); }
.card { border: 1px solid rgba(var(--rgb-accent), .28); }

/* 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: 2.1rem; --space-card: 1.1rem; --space-gap: 0.8rem; }
    .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; }
}