:root {
    --color-primary: #2d6a4f;
    --color-primary-dark: #1f3d35;
    --color-accent: #87a878;
    --color-surface: #faf8f3;
    --color-text: #2d2d2d;
    --rgb-primary: 45,106,79;
    --rgb-accent: 135,168,120;
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 18px;
    --radius-xl: 22px;
    --shadow-sm: 0 1px 0 rgba(0,0,0,.05);
    --shadow-md:
        0 10px 26px rgba(20,20,20,.08),
        0 2px 8px rgba(20,20,20,.06),
        0 0 0 1px rgba(45,106,79,.08);
    --shadow-lg:
        0 18px 44px rgba(20,20,20,.10),
        0 6px 18px rgba(20,20,20,.07),
        0 1px 0 rgba(255,255,255,.55) inset,
        0 0 0 1px rgba(135,168,120,.14);
    --space-section: 4.25rem;
    --space-card: 1.35rem;
    --space-gap: 1.25rem;
    --transition: 0.5s cubic-bezier(.2,.9,.2,1);
    --heading-weight: 750;
    --body-line-height: 1.7;

    --color-page-bg: #faf8f3;
    --color-card-bg: rgba(250,248,243,.82);
    --color-card-border: rgba(45,106,79,.14);
    --color-accent-ink: #c47b5a;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background:
        radial-gradient(1200px 600px at 15% -10%, rgba(135,168,120,.18) 0%, rgba(135,168,120,0) 55%),
        radial-gradient(900px 520px at 90% 10%, rgba(196,123,90,.14) 0%, rgba(196,123,90,0) 55%),
        linear-gradient(180deg, #faf8f3 0%, #f6f2e8 100%);
}

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);
    padding: var(--space-card);
    transition: var(--transition);
    box-shadow:
        0 20px 50px rgba(20,20,20,.10),
        0 6px 18px rgba(20,20,20,.07),
        0 0 0 1px rgba(45,106,79,.14),
        0 1px 0 rgba(255,255,255,.65) inset;
    background:
        linear-gradient(180deg, rgba(255,255,255,.72) 0%, rgba(250,248,243,.70) 35%, rgba(248,244,235,.72) 100%);
    border: 1px solid rgba(45,106,79,.10);
}

.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    filter: saturate(1.02);
}

a:not([class]) {
    color: #2f6f55;
    transition: var(--transition);
    text-decoration-color: rgba(135,168,120,.35);
}

a:not([class]):hover { color: var(--color-accent); }

.card {
    border: 1px solid rgba(var(--rgb-primary), .12);
    box-shadow:
        0 22px 60px rgba(20,20,20,.10),
        0 7px 22px rgba(20,20,20,.07),
        0 0 0 1px rgba(135,168,120,.18),
        0 1px 0 rgba(255,255,255,.7) inset;
}

/* ========== 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-radius: 20px;
                    background:
                        radial-gradient(600px 220px at 15% 0%, rgba(135,168,120,.14) 0%, rgba(135,168,120,0) 60%),
                        linear-gradient(180deg, rgba(255,255,255,.68) 0%, rgba(250,248,243,.74) 100%);
                    box-shadow:
                        0 18px 46px rgba(20,20,20,.10),
                        0 5px 16px rgba(20,20,20,.07),
                        0 0 0 1px rgba(45,106,79,.14),
                        0 1px 0 rgba(255,255,255,.65) inset;
                }

/* features: grid-3 */
.feature-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-gap);
}
.feature-list .card {
    border-radius: var(--radius-xl);
    box-shadow:
        0 22px 64px rgba(20,20,20,.10),
        0 7px 22px rgba(20,20,20,.07),
        0 0 0 1px rgba(135,168,120,.20),
        0 1px 0 rgba(255,255,255,.72) inset;
    background:
        linear-gradient(135deg, rgba(135,168,120,.16) 0%, rgba(255,255,255,.55) 38%, rgba(250,248,243,.78) 100%);
}

/* hero: minimal */
.hero { padding: 2rem 0; }
.hero-content { max-width: 560px; }
.hero-content .card {
    border-radius: 24px;
    background:
        radial-gradient(900px 320px at 20% 0%, rgba(135,168,120,.22) 0%, rgba(135,168,120,0) 55%),
        radial-gradient(700px 260px at 90% 15%, rgba(196,123,90,.18) 0%, rgba(196,123,90,0) 52%),
        linear-gradient(180deg, rgba(255,255,255,.74) 0%, rgba(250,248,243,.80) 100%);
    box-shadow:
        0 28px 80px rgba(20,20,20,.10),
        0 10px 30px rgba(20,20,20,.07),
        0 0 0 1px rgba(45,106,79,.14),
        0 1px 0 rgba(255,255,255,.75) inset;
}

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
                .testimonial-list > * {
                    break-inside: avoid;
                    margin-bottom: var(--space-gap);
                }
.testimonial-list > * {
    border-radius: 20px;
    background:
        linear-gradient(180deg, rgba(255,255,255,.70) 0%, rgba(250,248,243,.78) 100%);
    box-shadow:
        0 18px 46px rgba(20,20,20,.10),
        0 6px 18px rgba(20,20,20,.07),
        0 0 0 1px rgba(135,168,120,.18),
        0 1px 0 rgba(255,255,255,.7) inset;
}

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
.partner-grid .card {
    border-radius: 999px;
    padding: calc(var(--space-card) * .75);
    background:
        linear-gradient(135deg, rgba(135,168,120,.18) 0%, rgba(255,255,255,.62) 45%, rgba(250,248,243,.72) 100%);
    box-shadow:
        0 14px 38px rgba(20,20,20,.08),
        0 4px 14px rgba(20,20,20,.06),
        0 0 0 1px rgba(45,106,79,.12),
        0 1px 0 rgba(255,255,255,.7) inset;
}

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-list .card {
    border-radius: 22px;
    background:
        radial-gradient(700px 280px at 20% 0%, rgba(135,168,120,.16) 0%, rgba(135,168,120,0) 60%),
        linear-gradient(180deg, rgba(255,255,255,.72) 0%, rgba(250,248,243,.80) 100%);
    box-shadow:
        0 22px 60px rgba(20,20,20,.10),
        0 7px 22px rgba(20,20,20,.07),
        0 0 0 1px rgba(45,106,79,.14),
        0 1px 0 rgba(255,255,255,.72) inset;
}

/* 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 {
    border-radius: 24px;
    background:
        linear-gradient(180deg, rgba(255,255,255,.74) 0%, rgba(250,248,243,.82) 100%);
    box-shadow:
        0 28px 80px rgba(20,20,20,.10),
        0 10px 30px rgba(20,20,20,.07),
        0 0 0 1px rgba(135,168,120,.20),
        0 1px 0 rgba(255,255,255,.75) inset;
}

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }
.cta-inner .card {
    border-radius: 26px;
    background:
        linear-gradient(135deg, rgba(135,168,120,.22) 0%, rgba(255,255,255,.55) 42%, rgba(196,123,90,.10) 100%);
    box-shadow:
        0 30px 90px rgba(20,20,20,.10),
        0 10px 30px rgba(20,20,20,.07),
        0 0 0 1px rgba(45,106,79,.16),
        0 1px 0 rgba(255,255,255,.76) inset;
    backdrop-filter: blur(10px);
}

/* Page Layout: narrow-centered */
/* 窄版居中 */
            .page-main { max-width: 860px; margin: 0 auto; }
.page-main {
    filter: saturate(1.02);
}

/* 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; }

    .news-grid .card { border-radius: 18px; }
    .testimonial-list > * { border-radius: 18px; }
}
@media (max-width: 640px) {
    :root { --space-section: 2.35rem; --space-card: 1.05rem; --space-gap: 0.9rem; --transition: 0.45s cubic-bezier(.2,.9,.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; }

    .card, [class*="card"] {
        border-radius: 18px;
        box-shadow:
            0 16px 44px rgba(20,20,20,.09),
            0 5px 16px rgba(20,20,20,.06),
            0 0 0 1px rgba(45,106,79,.14),
            0 1px 0 rgba(255,255,255,.7) inset;
    }
}