:root {
    --color-primary: #0f4c5c;
    --color-primary-dark: #093443;
    --color-accent: #2a9d8f;
    --color-surface: #f6f7ff;
    --color-text: #102a32;
    --rgb-primary: 15,76,92;
    --rgb-accent: 42,157,143;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 14px;
    --radius-xl: 22px;

    --shadow-sm: 0 1px 0 rgba(9,52,67,.08);
    --shadow-md:
        0 10px 26px rgba(10,35,48,.10),
        0 2px 10px rgba(42,157,143,.14),
        0 1px 0 rgba(0,0,0,.04);
    --shadow-lg:
        0 18px 40px rgba(10,35,48,.14),
        0 6px 18px rgba(42,157,143,.22),
        0 2px 8px rgba(0,0,0,.06);

    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;

    --transition: 180ms cubic-bezier(.2,.9,.2,1);

    --heading-weight: 700;
    --body-line-height: 1.6;
}

body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background: transparent;
}

h1, h2, h3, h4 { font-weight: var(--heading-weight); }

section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }

/* Card/glow base */
.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow:
        0 12px 28px rgba(10,35,48,.10),
        0 3px 12px rgba(42,157,143,.18),
        0 1px 0 rgba(0,0,0,.04);
    padding: var(--space-card);
    transition:
        transform var(--transition),
        box-shadow var(--transition),
        border-color var(--transition),
        filter var(--transition),
        background-color var(--transition);
    background: linear-gradient(180deg, rgba(255,255,255,.92), rgba(246,247,255,.92));
    border: 1px solid rgba(42,157,143,.18);
}

/* Buttons/links */
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition:
        transform var(--transition),
        box-shadow var(--transition),
        color var(--transition),
        background-color var(--transition),
        border-color var(--transition),
        filter var(--transition);
    caret-color: var(--color-accent);
    accent-color: var(--color-accent);
}

a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-shadow: 0 0 0 rgba(0,0,0,0);
}

/* ========== 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);
                    box-shadow:
                        0 14px 30px rgba(10,35,48,.10),
                        0 2px 10px rgba(42,157,143,.16),
                        0 1px 0 rgba(0,0,0,.04);
                    border-color: rgba(42,157,143,.20);
                }

/* features: horizontal */
/* 水平滚动 */
                .feature-list {
                    display: flex;
                    gap: var(--space-gap);
                    overflow-x: auto;
                    scroll-snap-type: x mandatory;

                    background:
                        repeating-linear-gradient(
                            90deg,
                            rgba(42,157,143,.08) 0 18px,
                            rgba(255,255,255,0) 18px 36px
                        );
                    border-radius: var(--radius-xl);
                    padding: calc(var(--space-card) * .55);
                    box-shadow:
                        0 14px 34px rgba(10,35,48,.08),
                        0 1px 0 rgba(0,0,0,.04);
                    border: 1px solid rgba(42,157,143,.16);
                }
                .feature-list > * {
                    flex: 0 0 300px;
                    scroll-snap-align: start;
                }

/* hero: overlay */
/* 全屏背景+文字覆盖 */
                .hero {
                    position: relative;
                    min-height: 70vh;
                    display: flex;
                    align-items: center;

                    background:
                        radial-gradient(900px circle at 15% 25%, rgba(42,157,143,.30), rgba(42,157,143,0) 55%),
                        radial-gradient(700px circle at 85% 35%, rgba(15,76,92,.30), rgba(15,76,92,0) 60%),
                        linear-gradient(135deg, #0b3a45, #0f4c5c);
                    filter: saturate(1.05);
                }
                .hero-content { position: relative; z-index: 1; }

/* testimonials: stacked */
/* 垂直堆叠 */
                .testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; }

/* partners: scroll */
/* 自动滚动 */
                .partner-grid {
                    display: flex;
                    gap: 2rem;
                    overflow: hidden;

                    animation: partnerScroll 20s linear infinite;

                    background:
                        linear-gradient(180deg, rgba(255,255,255,.55), rgba(246,247,255,.35));
                    border-radius: var(--radius-xl);
                    padding: calc(var(--space-card) * .45);
                    border: 1px solid rgba(42,157,143,.14);
                    box-shadow:
                        0 18px 40px rgba(10,35,48,.10),
                        0 2px 10px rgba(42,157,143,.18);
                }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

/* 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; text-shadow: 0 0 28px rgba(42,157,143,.18); }

/* cta: card-style */
.cta-inner {
    background:
        radial-gradient(650px circle at 15% 15%, rgba(42,157,143,.26), rgba(42,157,143,0) 58%),
        radial-gradient(500px circle at 85% 35%, rgba(15,76,92,.22), rgba(15,76,92,0) 55%),
        linear-gradient(180deg, rgba(246,247,255,.98), rgba(246,247,255,.84));
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;

    box-shadow:
        0 22px 54px rgba(10,35,48,.12),
        0 8px 28px rgba(42,157,143,.22),
        0 2px 10px rgba(0,0,0,.05);
    border: 1px solid rgba(42,157,143,.18);
}

/* 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:
        0 26px 70px rgba(10,35,48,.16),
        0 0 32px rgba(42,157,143,.60),
        0 10px 32px rgba(42,157,143,.22);
    border-color: rgba(42,157,143,.40);
    filter: saturate(1.06);
}

a:not([class]):hover {
    color: var(--color-accent);
    text-shadow: 0 0 18px rgba(42,157,143,.35);
}

.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(900px circle at 20% 20%, rgba(42,157,143,.28), rgba(42,157,143,0) 56%),
        radial-gradient(650px circle at 80% 35%, rgba(15,76,92,.30), rgba(15,76,92,0) 60%),
        linear-gradient(135deg, #0b3a45, #0f4c5c);
}

/* Keep visual accent edge but shift palette */
.card { border-left: 3px solid rgba(42,157,143,.95); }

/* 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; --radius-lg: 13px; --radius-md: 11px; }
    .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; }
}