:root {
    --color-primary: #0f5c5e;
    --color-primary-dark: #062e34;
    --color-accent: #f0a33b;
    --color-surface: #f3faf7;
    --color-text: #08282a;
    --rgb-primary: 15,92,94;
    --rgb-accent: 240,163,59;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 22px;
    --shadow-sm: 0 1px 2px rgba(8,40,42,.06), 0 1px 3px rgba(15,92,94,.05);
    --shadow-md: 0 6px 18px rgba(8,40,42,.10), 0 2px 6px rgba(15,92,94,.08);
    --shadow-lg: 0 18px 40px rgba(8,40,42,.16), 0 8px 18px rgba(15,92,94,.10);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.5s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 600;
    --body-line-height: 1.6;
}

body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background: linear-gradient(180deg, #f3faf7 0%, #e9f5f1 55%, #f7fbf9 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);
    box-shadow: var(--shadow-md);
    padding: var(--space-card);
    transition: var(--transition);
    background: linear-gradient(160deg, rgba(255,255,255,.96) 0%, rgba(243,250,247,.92) 55%, rgba(233,245,241,.86) 100%);
    color: var(--color-text);
}

.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    color: #f8fffd;
    background: linear-gradient(135deg, #0f5c5e 0%, #0b726d 48%, #13968a 100%);
    box-shadow: 0 6px 16px rgba(15,92,94,.20), inset 0 1px 0 rgba(255,255,255,.18);
}

a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
}

/* ========== 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);
    background: radial-gradient(circle at 12% 8%, rgba(240,163,59,.10), transparent 42%),
                linear-gradient(180deg, rgba(243,250,247,0), rgba(233,245,241,.72));
    border-radius: var(--radius-xl);
}

.news-grid .card {
    display: grid;
    grid-template-columns: 280px 1fr;
    background: linear-gradient(145deg, rgba(255,255,255,.98) 0%, rgba(240,249,245,.94) 62%, rgba(226,242,237,.90) 100%);
}

/* features: horizontal */
/* 水平滚动 */
.feature-list {
    display: flex;
    gap: var(--space-gap);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    background: linear-gradient(90deg, rgba(243,250,247,.86), rgba(255,255,255,.72) 55%, rgba(240,249,245,.90));
    border-radius: var(--radius-xl);
}

.feature-list > * {
    flex: 0 0 300px;
    scroll-snap-align: start;
}

/* hero: centered */
.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

/* testimonials: carousel */
/* 单条轮播 */
.testimonial-list {
    display: flex;
    overflow: hidden;
    background: radial-gradient(circle at 84% 12%, rgba(240,163,59,.16), transparent 38%),
                linear-gradient(155deg, rgba(255,255,255,.84) 0%, rgba(239,248,244,.92) 100%);
    border-radius: var(--radius-xl);
}

.testimonial-list > * {
    flex: 0 0 100%;
}

/* partners: grid-6 */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-gap);
    align-items: center;
    background: linear-gradient(120deg, rgba(15,92,94,.045), rgba(240,163,59,.075) 52%, rgba(19,150,138,.055));
    border-radius: var(--radius-xl);
}

/* faq: single-column */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    background: linear-gradient(180deg, rgba(255,255,255,.76), rgba(243,250,247,.82));
    border-radius: var(--radius-lg);
}

/* stats: grid-4 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-gap);
    text-align: center;
    background: radial-gradient(circle at 50% 0%, rgba(240,163,59,.12), transparent 46%),
                linear-gradient(180deg, rgba(255,255,255,.78), rgba(233,245,241,.70));
    border-radius: var(--radius-xl);
}

/* cta: split */
.cta-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 2rem;
    background: linear-gradient(135deg, rgba(15,92,94,.06), rgba(240,163,59,.08) 58%, rgba(19,150,138,.05));
    border-radius: var(--radius-xl);
}

/* 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(-4px);
    box-shadow: var(--shadow-lg);
}

.hero, [class*="hero"], section:first-of-type {
    background: radial-gradient(circle at 18% 20%, rgba(240,163,59,.24), transparent 44%),
                radial-gradient(circle at 88% 82%, rgba(19,150,138,.22), transparent 42%),
                linear-gradient(135deg, #062e34 0%, #0f5c5e 40%, #147a72 66%, #082a30 100%);
}

/* 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; }
}