/* ==========================================================================
   SITE 1: CLASHVERGE.CLOUD - Modern SaaS Software Client Portal
   Theme: Electric Royal Indigo & Pure White (#6366F1 / #4F46E5 / #FFFFFF)
   Layout: 2-Column Hero + Interactive App Mockup + Bento Grid + Matrix Table
   ========================================================================== */
:root {
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-dark: #3730a3;
  --primary-light: #eef2ff;
  --accent-cyan: #06b6d4;
  --accent-violet: #8b5cf6;
  --bg-page: #f8faff;
  --bg-card: #ffffff;
  --text-title: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --border-light: #e0e7ff;
  --shadow-card: 0 4px 20px -2px rgba(99, 102, 241, 0.08);
  --shadow-hover: 0 12px 30px -4px rgba(99, 102, 241, 0.16);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font-sans); color: var(--text-body); background: var(--bg-page); line-height: 1.7; }
a { color: var(--primary); text-decoration: none; transition: all 0.2s; }
a:hover { color: var(--primary-hover); }

/* Header */
.site-header { background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border-light); position: sticky; top: 0; z-index: 100; }
.nav-container { max-width: 1240px; margin: 0 auto; padding: 0 24px; height: 72px; display: flex; align-items: center; justify-content: space-between; }
.brand-logo { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; font-size: 1.35rem; color: var(--text-title); text-decoration: none !important; }
.brand-logo img { width: 36px; height: 36px; border-radius: 50%; box-shadow: 0 2px 8px rgba(99, 102, 241, 0.35); }
.nav-menu { display: flex; align-items: center; gap: 8px; list-style: none; }
.nav-menu a { color: #475569; font-weight: 600; font-size: 0.94rem; padding: 8px 14px; border-radius: 8px; }
.nav-menu a:hover { color: var(--primary); background: var(--primary-light); }
.nav-menu a.active { color: var(--primary); background: #e0e7ff; font-weight: 700; }
.nav-cta { display: flex; align-items: center; gap: 12px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 42px; padding: 0 22px; font-weight: 700; font-size: 0.92rem; border-radius: 10px; cursor: pointer; transition: all 0.25s ease; text-decoration: none !important; }
.btn-aff { background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%); color: #fff !important; box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35); border: none; }
.btn-aff:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(99, 102, 241, 0.5); }
.btn-primary { background: #ffffff; color: var(--primary) !important; border: 1.5px solid var(--border-light); }
.btn-primary:hover { background: var(--primary-light); border-color: var(--primary); transform: translateY(-2px); }

/* 2-COLUMN HERO WITH APP PREVIEW MOCKUP */
.hero-saas { padding: 70px 24px 80px; background: radial-gradient(circle at 70% 20%, #eef2ff 0%, #f8faff 70%); border-bottom: 1px solid var(--border-light); }
.hero-wrapper { max-width: 1240px; margin: 0 auto; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center; }
.hero-content { text-align: left; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: #eef2ff; border: 1px solid #c7d2fe; padding: 6px 16px; border-radius: 9999px; color: var(--primary-dark); font-size: 0.88rem; font-weight: 700; margin-bottom: 20px; }
.hero-title { font-size: 2.9rem; font-weight: 900; line-height: 1.22; color: var(--text-title); margin-bottom: 18px; letter-spacing: -0.02em; }
.hero-title .gradient-text { background: linear-gradient(135deg, #4f46e5 0%, #8b5cf6 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-desc { font-size: 1.15rem; color: #475569; margin-bottom: 30px; line-height: 1.8; }
.protocol-tags { display: flex; gap: 10px; margin-bottom: 32px; flex-wrap: wrap; }
.proto-tag { font-size: 0.82rem; font-weight: 700; background: #ffffff; border: 1px solid var(--border-light); padding: 4px 12px; border-radius: 6px; color: var(--primary); }

/* APP MOCKUP CARD */
.app-mockup { background: #ffffff; border: 1px solid #c7d2fe; border-radius: 20px; padding: 24px; box-shadow: 0 20px 45px -10px rgba(99, 102, 241, 0.2); }
.mockup-header { display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid #f1f5f9; padding-bottom: 14px; margin-bottom: 18px; }
.mockup-dots { display: flex; gap: 6px; }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.red { background: #f87171; }
.dot.yellow { background: #fbbf24; }
.dot.green { background: #34d399; }
.mockup-title { font-size: 0.85rem; font-weight: 700; color: #64748b; font-family: var(--font-mono); }
.mockup-mode-tabs { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; margin-bottom: 18px; }
.mode-tab { text-align: center; padding: 8px; border-radius: 8px; font-size: 0.82rem; font-weight: 700; background: #f8fafc; color: #64748b; border: 1px solid #e2e8f0; }
.mode-tab.active { background: #eef2ff; color: var(--primary); border-color: var(--primary); }
.node-row { display: flex; align-items: center; justify-content: space-between; padding: 12px; background: #f8fafc; border-radius: 8px; margin-bottom: 8px; font-size: 0.88rem; font-weight: 600; }
.node-row.active { background: #f5f3ff; border: 1px solid #c4b5fd; color: #6d28d9; }
.latency { font-family: var(--font-mono); font-size: 0.8rem; padding: 2px 8px; border-radius: 4px; font-weight: 700; }
.latency.fast { background: #dcfce7; color: #15803d; }
.tun-switch-box { display: flex; align-items: center; justify-content: space-between; padding: 12px; background: #eef2ff; border-radius: 8px; margin-top: 14px; font-size: 0.88rem; font-weight: 700; color: var(--primary-dark); }

/* BENTO GRID */
.main-wrapper { max-width: 1240px; margin: 0 auto; padding: 70px 24px; }
.section-header { text-align: center; max-width: 760px; margin: 0 auto 50px; }
.section-tag { color: var(--primary); font-weight: 800; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 8px; }
.section-title { font-size: 2.2rem; font-weight: 900; color: var(--text-title); margin-bottom: 12px; }
.section-sub { font-size: 1.05rem; color: var(--text-muted); }

.bento-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 70px; }
.bento-card { background: var(--bg-card); border: 1px solid var(--border-light); border-radius: 18px; padding: 32px; box-shadow: var(--shadow-card); transition: all 0.3s; }
.bento-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: #a5b4fc; }
.bento-card.col-span-2 { grid-column: span 2; }
.bento-icon { width: 50px; height: 50px; background: var(--primary-light); color: var(--primary); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; margin-bottom: 20px; }
.bento-title { font-size: 1.3rem; font-weight: 800; color: var(--text-title); margin-bottom: 10px; }
.bento-desc { font-size: 0.95rem; color: var(--text-body); line-height: 1.7; }

/* Download matrix */
.download-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 28px; margin-bottom: 60px; }
.os-card { background: #ffffff; border-radius: 18px; padding: 32px; border: 1px solid var(--border-light); box-shadow: var(--shadow-card); transition: all 0.3s; }
.os-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: #a5b4fc; }
.os-card-header { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; }
.os-icon { width: 54px; height: 54px; background: var(--primary-light); color: var(--primary); border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 1.6rem; }
.os-title { font-size: 1.35rem; font-weight: 800; color: var(--text-title); }
.os-tag { font-size: 0.82rem; color: var(--primary); font-weight: 700; margin-top: 2px; }
.package-list { list-style: none; }
.package-item { padding: 12px 0; border-bottom: 1px solid #f1f5f9; }
.package-item:last-child { border-bottom: none; }
.pkg-link { display: flex; align-items: center; justify-content: space-between; font-weight: 700; color: var(--primary); }
.pkg-desc { font-size: 0.82rem; color: var(--text-muted); margin-top: 4px; }

/* Steps */
.steps-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; margin-bottom: 60px; }
.step-card { background: #ffffff; border: 1px solid var(--border-light); border-radius: 16px; padding: 28px 24px; box-shadow: var(--shadow-card); }
.step-badge { width: 38px; height: 38px; background: var(--primary); color: #fff; font-weight: 800; border-radius: 10px; display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.step-title { font-size: 1.15rem; font-weight: 800; margin-bottom: 8px; color: var(--text-title); }
.step-desc { font-size: 0.92rem; color: var(--text-muted); }

/* CTA */
.cta-banner { background: linear-gradient(135deg, #4f46e5 0%, #6366f1 50%, #8b5cf6 100%); color: #fff; border-radius: 20px; padding: 50px 36px; text-align: center; margin: 60px 0; box-shadow: var(--shadow-hover); }
.cta-banner h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 14px; }
.cta-banner p { font-size: 1.1rem; color: #e0e7ff; max-width: 720px; margin: 0 auto 28px; }

/* FAQ */
.faq-list { max-width: 880px; margin: 0 auto; }
.faq-item { background: #ffffff; border: 1px solid var(--border-light); border-radius: 12px; margin-bottom: 14px; overflow: hidden; }
.faq-question { padding: 18px 24px; font-weight: 800; font-size: 1.05rem; cursor: pointer; color: var(--text-title); display: flex; justify-content: space-between; }
.faq-answer { padding: 0 24px 20px; color: var(--text-body); border-top: 1px solid #f8fafc; }

/* Content & Footer */
.content-card { background: #ffffff; border-radius: 18px; padding: 42px 48px; border: 1px solid var(--border-light); box-shadow: var(--shadow-card); max-width: 960px; margin: 0 auto 50px; }
.content-card h1 { font-size: 2.3rem; font-weight: 900; color: var(--text-title); margin-bottom: 14px; }
.article-meta { display: flex; gap: 18px; color: var(--text-muted); font-size: 0.88rem; margin-bottom: 30px; padding-bottom: 16px; border-bottom: 1px solid #f1f5f9; }
.article-body h3 { font-size: 1.4rem; font-weight: 800; margin: 28px 0 12px; color: var(--text-title); }
.article-body p { margin-bottom: 16px; line-height: 1.8; }
.article-body ul, .article-body ol { margin: 16px 0 24px 24px; line-height: 1.8; }
.article-body code { background: #eef2ff; color: #4338ca; padding: 2px 6px; border-radius: 4px; font-family: var(--font-mono); }
.article-body pre { background: #1e1b4b; color: #e0e7ff; padding: 20px; border-radius: 12px; overflow-x: auto; margin: 20px 0; font-family: var(--font-mono); }

.site-footer { background: #0f172a; color: #94a3b8; padding: 60px 24px 30px; font-size: 0.9rem; }
.footer-container { max-width: 1240px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand h4 { color: #fff; font-size: 1.2rem; margin-bottom: 12px; }
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: #cbd5e1; }
.footer-links a:hover { color: #fff; }
.footer-bottom { max-width: 1240px; margin: 0 auto; padding-top: 24px; border-top: 1px solid #334155; text-align: center; }


/* Subpage Hero & Components */
.subpage-hero { padding: 56px 20px 48px; background: radial-gradient(circle at 50% 20%, #eef2ff 0%, #f8faff 80%); border-bottom: 1px solid var(--border-light); text-align: center; width: 100%; }
.subpage-hero-container { max-width: 960px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; text-align: center; padding: 0 20px; }
.breadcrumbs { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-size: 0.86rem; margin-bottom: 18px; padding: 6px 18px; background: #ffffff; border: 1px solid var(--border-light); border-radius: 9999px; box-shadow: 0 2px 6px rgba(99, 102, 241, 0.06); }
.breadcrumbs a { color: var(--text-muted); display: inline-flex; align-items: center; gap: 6px; font-weight: 600; text-decoration: none; }
.breadcrumbs a:hover { color: var(--primary); }
.breadcrumbs .sep { font-size: 0.65rem; color: #94a3b8; margin: 0 2px; }
.breadcrumbs .current { color: var(--text-title); font-weight: 700; }
.subpage-title { font-size: 2.35rem; font-weight: 900; color: var(--text-title); margin-bottom: 14px; letter-spacing: -0.015em; line-height: 1.25; text-align: center; }
.subpage-desc { font-size: 1.05rem; color: #475569; max-width: 720px; margin: 0 auto; line-height: 1.75; text-align: center; }
.sitemap-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; margin: 30px 0; }
.sitemap-card { background: #ffffff; border: 1px solid var(--border-light); border-radius: 14px; padding: 24px; box-shadow: var(--shadow-card); }
.sitemap-card h3 { font-size: 1.15rem; font-weight: 800; color: var(--text-title); margin-bottom: 12px; border-bottom: 1px solid #f1f5f9; padding-bottom: 8px; }
.sitemap-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.sitemap-list a { color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
.sitemap-list a:hover { text-decoration: underline; }