:root {
    --color-primary: #0f766e;
    --color-primary-dark: #042f2e;
    --color-accent: #f97316;
    --color-surface: #fff7ed;
    --color-text: #1c1917;
    --color-cream: #fffbeb;
    --color-white: #ffffff;
    --color-deep: #134e4a;
    --rgb-primary: 15,118,110;
    --rgb-accent: 249,115,22;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 30px;
    --shadow-sm: 0 6px 14px -8px rgba(15,118,110,.24), 0 1px 2px rgba(4,47,46,.08);
    --shadow-md: 0 18px 38px -22px rgba(4,47,46,.42), 0 8px 18px -12px rgba(249,115,22,.18), inset 0 1px 0 rgba(255,255,255,.72);
    --shadow-lg: 0 32px 64px -28px rgba(4,47,46,.55), 0 18px 32px -18px rgba(15,118,110,.24), inset 0 1px 0 rgba(255,255,255,.18);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.55s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 800;
    --body-line-height: 1.75;
    --gradient-strip: linear-gradient(180deg, #ffffff 0%, #fffbeb 36%, #fff7ed 64%, #ffffff 100%);
    --gradient-card: linear-gradient(145deg, #ffffff 0%, #fff7ed 52%, #ffedd5 100%);
    --gradient-dark: linear-gradient(135deg, #042f2e 0%, #0f766e 46%, #134e4a 100%);
    --gradient-accent: linear-gradient(135deg, #0f766e 0%, #14b8a6 52%, #f97316 100%);
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(180deg, #fffbeb 0%, #ffffff 30%, #fff7ed 62%, #fef3c7 100%); caret-color: var(--color-accent); accent-color: var(--color-accent); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); background: var(--gradient-strip); box-shadow: inset 0 1px 0 rgba(255,255,255,.80), inset 0 -1px 0 rgba(15,118,110,.08); }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); background: var(--gradient-card); color: var(--color-text); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background-image: var(--gradient-accent); background-color: #0f766e; color: #fff7ed; border-color: transparent; box-shadow: 0 14px 30px -14px rgba(4,47,46,.55), 0 4px 12px rgba(249,115,22,.18); text-shadow: 0 1px 0 rgba(0,0,0,.18); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); outline-color: rgba(249,115,22,.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; }

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); background: linear-gradient(90deg, rgba(255,255,255,.52) 0%, rgba(255,247,237,.82) 50%, rgba(255,255,255,.52) 100%); border-radius: var(--radius-xl); box-shadow: inset 0 0 0 1px rgba(15,118,110,.08); }

/* hero: overlay */
/* 全屏背景+文字覆盖 */
                .hero { position: relative; min-height: 70vh; display: flex; align-items: center; background: radial-gradient(circle at 18% 22%, rgba(249,115,22,.28) 0%, rgba(249,115,22,0) 42%), linear-gradient(135deg, #042f2e 0%, #0f766e 48%, #134e4a 76%, #115e59 100%); box-shadow: inset 0 -24px 64px -32px rgba(0,0,0,.55); }
                .hero-content { position: relative; z-index: 1; color: #fff7ed; text-shadow: 0 8px 28px rgba(0,0,0,.30); }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; background: linear-gradient(90deg, rgba(255,255,255,.72) 0%, rgba(255,247,237,.86) 50%, rgba(255,255,255,.72) 100%); border-radius: var(--radius-xl); box-shadow: var(--shadow-sm); } 
                .testimonial-list > * { flex: 0 0 100%; }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; background: linear-gradient(90deg, rgba(255,255,255,.62) 0%, rgba(255,247,237,.82) 50%, rgba(255,255,255,.62) 100%); border-radius: var(--radius-xl); box-shadow: inset 0 0 0 1px rgba(15,118,110,.08); }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); background: linear-gradient(180deg, rgba(255,255,255,.56) 0%, rgba(255,247,237,.78) 100%); border-radius: var(--radius-lg); box-shadow: inset 0 0 0 1px rgba(15,118,110,.08); }

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; background: linear-gradient(90deg, rgba(255,251,235,0) 0%, rgba(255,247,237,.78) 22%, rgba(255,255,255,.92) 50%, rgba(255,247,237,.78) 78%, rgba(255,251,235,0) 100%); border-radius: var(--radius-xl); box-shadow: 0 10px 24px -24px rgba(4,47,46,.44); }

/* cta: card-style */
.cta-inner { background: var(--color-surface); border-radius: var(--radius-xl); padding: 3rem; text-align: center; background-image: var(--gradient-dark); color: #fff7ed; box-shadow: 0 34px 72px -32px rgba(4,47,46,.64), inset 0 1px 0 rgba(255,255,255,.18); text-shadow: 0 6px 22px rgba(0,0,0,.22); }

/* 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 2px 10px rgba(249,115,22,.24); }
header, .header, .navbar { background: linear-gradient(90deg, rgba(255,255,255,.86) 0%, rgba(255,247,237,.72) 46%, rgba(255,251,235,.90) 100%); backdrop-filter: blur(12px); box-shadow: 0 12px 28px -26px rgba(4,47,46,.55); }

/* 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; }
}