:root {
    --color-primary: #b91c1c;
    --color-primary-dark: #7f1d1d;
    --color-accent: #f97316;
    --color-surface: #fff1e6;
    --color-text: #1f2937;
    --rgb-primary: 185,28,28;
    --rgb-accent: 249,115,22;
    --radius-sm: 0;
    --radius-md: 3px;
    --radius-lg: 0;
    --radius-xl: 2px;
    --shadow-sm: 0 1px 0 rgba(31, 41, 55, .06), 0 10px 22px rgba(185,28,28,.08);
    --shadow-md: 0 1px 0 rgba(31, 41, 55, .06), 0 14px 34px rgba(185,28,28,.12), 0 2px 0 rgba(249,115,22,.10) inset;
    --shadow-lg: 0 2px 0 rgba(31, 41, 55, .06), 0 26px 60px rgba(185,28,28,.14), 0 1px 0 rgba(249,115,22,.18) inset, 0 0 0 1px rgba(185,28,28,.10);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 0.52s cubic-bezier(.2,.85,.2,1);
    --heading-weight: 650;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(180deg, rgba(255,241,230,1) 0%, rgba(255,255,255,1) 28%, rgba(249,250,251,1) 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); background-image: linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,0)); }
.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow:
        0 1px 0 rgba(31, 41, 55, .06),
        0 18px 40px rgba(var(--rgb-primary), .14),
        0 10px 22px rgba(var(--rgb-accent), .10),
        0 0 0 1px rgba(var(--rgb-primary), .14) inset;
    padding: var(--space-card);
    transition: var(--transition);
    background:
        linear-gradient(180deg, rgba(255,255,255,1) 0%, rgba(255,247,237,.92) 100%);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    box-shadow:
        0 1px 0 rgba(31, 41, 55, .06),
        0 14px 30px rgba(var(--rgb-primary), .12),
        0 0 0 1px rgba(var(--rgb-primary), .16) inset;
    background:
        linear-gradient(180deg, rgba(185,28,28,1) 0%, rgba(127,29,29,1) 100%);
    color: rgba(255,255,255,.96);
}
a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-shadow: 0 1px 0 rgba(255,255,255,.35);
}
a:not([class]):hover { color: var(--color-accent); }

/* Alternating horizontal strips (visual-only) */
section:nth-of-type(odd),
.section:nth-of-type(odd) {
    background:
        linear-gradient(90deg, rgba(255,255,255,.96) 0%, rgba(255,241,230,.92) 52%, rgba(255,255,255,.96) 100%);
}
section:nth-of-type(even),
.section:nth-of-type(even) {
    background:
        linear-gradient(90deg, rgba(31,41,55,.96) 0%, rgba(79,70,229,.22) 40%, rgba(249,115,22,.18) 70%, rgba(31,41,55,.96) 100%);
    color: rgba(255,255,255,.92);
}
section:nth-of-type(even) a:not([class]),
.section:nth-of-type(even) a:not([class]) { color: rgba(251,146,60,.96); }
section:nth-of-type(even) .card,
.section:nth-of-type(even) .card,
section:nth-of-type(even) [class*="card"],
.section:nth-of-type(even) [class*="card"] {
    background:
        radial-gradient(1200px 220px at 20% 0%, rgba(249,115,22,.28) 0%, rgba(0,0,0,0) 52%),
        linear-gradient(180deg, rgba(255,255,255,.10) 0%, rgba(255,255,255,.06) 100%);
    box-shadow:
        0 1px 0 rgba(255,255,255,.10),
        0 18px 40px rgba(0,0,0,.35),
        0 12px 26px rgba(var(--rgb-accent), .18),
        0 0 0 1px rgba(255,255,255,.12) inset;
}

/* ========== 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; }
                .news-grid .card {
                    border-radius: var(--radius-xl);
                    background:
                        linear-gradient(180deg, rgba(255,255,255,1) 0%, rgba(255,247,237,.90) 100%),
                        radial-gradient(900px 240px at 0% 0%, rgba(var(--rgb-accent), .20) 0%, rgba(0,0,0,0) 55%);
                }
                .news-grid .card { color: var(--color-text); }

/* 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 .card {
                    background:
                        linear-gradient(135deg, rgba(255,255,255,1) 0%, rgba(255,241,230,.96) 38%, rgba(255,255,255,1) 100%),
                        radial-gradient(700px 260px at 30% 0%, rgba(var(--rgb-primary), .18) 0%, rgba(0,0,0,0) 55%);
                    box-shadow:
                        0 1px 0 rgba(31, 41, 55, .06),
                        0 18px 40px rgba(var(--rgb-primary), .11),
                        0 10px 24px rgba(var(--rgb-accent), .10),
                        0 0 0 1px rgba(var(--rgb-accent), .16) inset;
                }
                .feature-list .card { border-radius: var(--radius-xl); }

/* hero: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }
.hero-content .card,
.hero-content [class*="card"]{
    border-radius: var(--radius-xl);
    background:
        radial-gradient(900px 320px at 50% 0%, rgba(var(--rgb-accent), .24) 0%, rgba(0,0,0,0) 60%),
        linear-gradient(180deg, rgba(255,255,255,1) 0%, rgba(255,247,237,.92) 100%);
}

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
                .testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }
                .testimonial-list > * {
                    box-shadow:
                        0 1px 0 rgba(31, 41, 55, .06),
                        0 16px 36px rgba(var(--rgb-primary), .12),
                        0 10px 22px rgba(var(--rgb-accent), .10),
                        0 0 0 1px rgba(185,28,28,.10) inset;
                    border-radius: var(--radius-xl);
                    transition: var(--transition);
                    background:
                        linear-gradient(180deg, rgba(255,255,255,1) 0%, rgba(255,247,237,.90) 100%);
                }

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; }
.partner-grid .card,
.partner-grid [class*="card"]{
    border-radius: var(--radius-xl);
    background:
        linear-gradient(135deg, rgba(255,255,255,1) 0%, rgba(255,241,230,.92) 45%, rgba(255,255,255,1) 100%);
}

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }
.faq-list .card,
.faq-list [class*="card"]{
    border-radius: var(--radius-xl);
    background:
        radial-gradient(900px 260px at 0% 0%, rgba(var(--rgb-primary), .18) 0%, rgba(0,0,0,0) 56%),
        linear-gradient(180deg, rgba(255,255,255,1) 0%, rgba(255,247,237,.92) 100%);
}

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid .card,
.stats-grid [class*="card"]{
    border-radius: var(--radius-xl);
    background:
        conic-gradient(from 180deg at 50% 50%, rgba(var(--rgb-accent), .16) 0deg, rgba(255,255,255,1) 70deg, rgba(var(--rgb-primary), .14) 180deg, rgba(255,255,255,1) 300deg);
    box-shadow:
        0 1px 0 rgba(31, 41, 55, .06),
        0 18px 40px rgba(var(--rgb-primary), .10),
        0 0 0 1px rgba(var(--rgb-primary), .12) inset;
}

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }
.cta-inner .card,
.cta-inner [class*="card"]{
    border-radius: var(--radius-xl);
    background:
        linear-gradient(90deg, rgba(var(--rgb-primary), .18) 0%, rgba(255,255,255,1) 38%, rgba(var(--rgb-accent), .18) 100%),
        radial-gradient(700px 280px at 50% 0%, rgba(var(--rgb-accent), .22) 0%, rgba(0,0,0,0) 60%);
    box-shadow:
        0 1px 0 rgba(31, 41, 55, .06),
        0 22px 58px rgba(var(--rgb-primary), .14),
        0 16px 34px rgba(var(--rgb-accent), .12),
        0 0 0 1px rgba(var(--rgb-accent), .18) inset;
}

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
            .page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 18px rgba(var(--rgb-accent), .35); }

/* 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; --transition: 0.46s 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; }
}