/* CSSVariantEngine v3.0 — 9you-stream.com.cn */
/* Palette: ember-teal | Radius: medium | Shadow: glow */
/* Spacing: balanced | Transition: smooth */
/* Section layouts: {"news":"grid-4","features":"centered","hero":"split","testimonials":"masonry","partners":"grid-6","faq":"single-column","stats":"grid-4","cta":"card-style"} */

:root {
    --color-primary: #0f766e;
    --color-primary-dark: #042f2e;
    --color-accent: #f59e0b;
    --color-surface: #fffbeb;
    --color-text: #1c1917;
    --rgb-primary: 15,118,110;
    --rgb-accent: 245,158,11;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 14px;
    --radius-xl: 16px;
    --shadow-sm: 0 2px 8px rgba(var(--rgb-primary), .12), 0 0 16px rgba(var(--rgb-accent), .22);
    --shadow-md: 0 4px 18px rgba(var(--rgb-primary), .16), 0 0 24px rgba(var(--rgb-accent), .4);
    --shadow-lg: 0 10px 32px rgba(var(--rgb-primary), .2), 0 0 40px rgba(var(--rgb-accent), .55);
    --space-section: 3.5rem;
    --space-card: 1.25rem;
    --space-gap: 1.1rem;
    --transition: 0.3s cubic-bezier(.4, 0, .2, 1);
    --heading-weight: 700;
    --body-line-height: 1.65;
    --block-outline: 1px solid rgba(var(--rgb-accent), .45);
    accent-color: var(--color-accent);
    caret-color: var(--color-accent);
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: var(--color-surface); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 0 18px rgba(var(--rgb-accent), .12); }
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: var(--color-surface); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); box-shadow: 0 0 18px rgba(var(--rgb-accent), .25); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

/* ========== Section Layout Variants ========== */

/* news: grid-4 */
.news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 0.8); background: #dbeafe; border-radius: 16px 8px 16px 8px; outline: var(--block-outline); box-shadow: var(--shadow-sm); }

/* features: centered */
.feature-list { display: flex; flex-direction: column; align-items: center; gap: calc(var(--space-gap) * 2); max-width: 720px; margin: 0 auto; background: #fef3c7; border-radius: 8px 16px 8px 16px; outline: var(--block-outline); box-shadow: var(--shadow-sm); }

/* hero: split */
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; background: linear-gradient(135deg, #f0fdfa 0%, #99f6e4 100%); border-radius: 16px 16px 8px 8px; outline: var(--block-outline); box-shadow: 0 0 24px rgba(var(--rgb-accent), .25), 0 8px 24px rgba(var(--rgb-primary), .14); animation: heroPulse 5s ease-in-out infinite; }

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); background: #fce7f3; border-radius: 8px 16px; outline: var(--block-outline); box-shadow: var(--shadow-sm); }
.testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; background: #ede9fe; border-radius: 16px 8px; outline: var(--block-outline); box-shadow: var(--shadow-sm); }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; background: #ffedd5; border-radius: 12px; outline: var(--block-outline); box-shadow: var(--shadow-sm); }

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; background: #cffafe; border-radius: 16px 8px 16px 8px; outline: var(--block-outline); box-shadow: var(--shadow-sm); }

/* cta: card-style */
.cta-inner { background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%); border-radius: var(--radius-xl); padding: 3rem; text-align: center; outline: var(--block-outline); box-shadow: 0 0 24px rgba(var(--rgb-accent), .4), 0 10px 30px rgba(var(--rgb-primary), .18); animation: ctaPulse 3.5s ease-in-out infinite; }

/* Page Layout: wide */
.page-main { max-width: 1400px; margin: 0 auto; }

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 14px rgba(var(--rgb-accent), .45); }
.card { border: 1px solid rgba(var(--rgb-accent), .35); }
header, .header, .navbar { box-shadow: 0 2px 16px rgba(var(--rgb-primary), .15), 0 0 24px rgba(var(--rgb-accent), .12); }
.card:hover, [class*="card"]:hover { box-shadow: 0 0 32px rgba(var(--rgb-accent), .6), 0 8px 28px rgba(var(--rgb-primary), .2); border-color: rgba(var(--rgb-accent), .7); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { box-shadow: 0 0 30px rgba(var(--rgb-accent), .6); }

@keyframes heroPulse {
    0%, 100% { box-shadow: 0 0 20px rgba(var(--rgb-accent), .22), 0 8px 24px rgba(var(--rgb-primary), .12); }
    50% { box-shadow: 0 0 36px rgba(var(--rgb-accent), .45), 0 8px 24px rgba(var(--rgb-primary), .18); }
}

@keyframes ctaPulse {
    0%, 100% { box-shadow: 0 0 24px rgba(var(--rgb-accent), .4), 0 10px 30px rgba(var(--rgb-primary), .18); }
    50% { box-shadow: 0 0 44px rgba(var(--rgb-accent), .7), 0 10px 30px rgba(var(--rgb-primary), .24); }
}

/* 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: 2.25rem; --space-card: 1.05rem; --space-gap: 0.8rem; }
    .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; }
}