/* style.css - FEILIU VPN (Telemetry / Athletic Brutalism) */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700;800&family=Noto+Sans+SC:wght@400;700;900&family=Space+Grotesk:wght@500;700;900&display=swap');

:root {
  --bg: #0B0E0C;
  --accent: #C8FF3E;
  --text: #ECF3E4;
  --muted: #7C8878;
  --border: #2C3529;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { background-color: var(--bg); color: var(--text); font-family: 'Noto Sans SC', sans-serif; line-height: 1.6; -webkit-font-smoothing: antialiased; position: relative; overflow-x: hidden; }
body::before { content: ""; position: fixed; inset: 0; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.08'/%3E%3C/svg%3E"); pointer-events: none; z-index: 9999; }
.scanline { position: fixed; top: 0; left: 0; width: 100%; height: 8px; background: var(--accent); opacity: 0.15; box-shadow: 0 0 20px var(--accent); animation: scan 4s linear infinite; pointer-events: none; z-index: 9998; }
@keyframes scan { 0% { transform: translateY(-100vh); } 100% { transform: translateY(200vh); } }

h1, h2, h3, h4, h5, h6, .brand-text { font-family: 'Space Grotesk', sans-serif; text-transform: uppercase; font-weight: 800; letter-spacing: -0.03em; color: var(--text); margin-bottom: 1rem; }
.mono { font-family: 'JetBrains Mono', monospace; text-transform: uppercase; }
a { color: inherit; text-decoration: none; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* Header */
.header { border-bottom: 1px solid var(--border); position: sticky; top: 0; background: var(--bg); z-index: 100; }
.nav-wrapper { display: flex; align-items: center; justify-content: space-between; height: 80px; }
.logo-group { display: flex; align-items: center; gap: 12px; }
.logo-icon { width: 32px; height: 32px; }
.brand-text { font-size: 1.5rem; margin: 0; color: var(--text); }
.nav-links { display: flex; gap: 32px; }
.nav-links a { font-family: 'JetBrains Mono', monospace; font-size: 0.9rem; font-weight: 700; color: var(--muted); transition: color 0.2s; }
.nav-links a:hover { color: var(--accent); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; font-family: 'JetBrains Mono', monospace; font-weight: 800; font-size: 1rem; padding: 16px 32px; min-height: 48px; border: 2px solid var(--accent); background: transparent; color: var(--accent); cursor: pointer; text-transform: uppercase; transition: all 0.15s; }
.btn:hover { background: var(--accent); color: var(--bg); }
.btn-primary { background: var(--accent); color: var(--bg); }
.btn-primary:hover { background: var(--text); border-color: var(--text); color: var(--bg); }
.btn-block { width: 100%; }

/* Hero Section */
.hero { min-height: calc(100vh - 80px); display: flex; align-items: center; border-bottom: 1px solid var(--border); padding: 80px 0; position: relative; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.hero-title { font-size: 5rem; line-height: 0.9; margin-bottom: 24px; }
.hero-title .highlight { color: var(--accent); display: block; }
.hero-desc { font-size: 1.25rem; color: var(--muted); max-width: 500px; margin-bottom: 40px; }

/* Telemetry Dial */
.telemetry-panel { border: 1px solid var(--border); padding: 40px; display: flex; flex-direction: column; align-items: center; justify-content: center; background: repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(255,255,255,0.02) 10px, rgba(255,255,255,0.02) 20px); }
.dial-container { width: 300px; height: 150px; position: relative; overflow: hidden; border-bottom: 2px solid var(--accent); margin-bottom: 24px; }
.dial-arc { width: 300px; height: 300px; border-radius: 50%; border: 4px dashed var(--border); border-top: 4px solid var(--accent); border-left: 4px solid var(--accent); transform: rotate(45deg); }
.dial-needle { position: absolute; bottom: -2px; left: 50%; width: 4px; height: 120px; background: var(--accent); transform-origin: bottom center; animation: needle-twitch 3s cubic-bezier(0.25, 1, 0.5, 1) infinite; }
@keyframes needle-twitch { 0% { transform: translateX(-50%) rotate(-60deg); } 20% { transform: translateX(-50%) rotate(20deg); } 40% { transform: translateX(-50%) rotate(-10deg); } 60% { transform: translateX(-50%) rotate(40deg); } 80% { transform: translateX(-50%) rotate(5deg); } 100% { transform: translateX(-50%) rotate(-60deg); } }
.dial-readout { text-align: center; }
.dial-value { font-size: 3rem; font-weight: 800; color: var(--text); line-height: 1; }
.dial-label { font-size: 0.9rem; color: var(--muted); letter-spacing: 0.1em; }

/* Marquee */
.marquee-container { width: 100%; overflow: hidden; background: var(--accent); color: var(--bg); padding: 12px 0; border-bottom: 1px solid var(--border); }
.marquee-content { display: flex; white-space: nowrap; animation: marquee 20s linear infinite; }
.marquee-item { font-family: 'JetBrains Mono', monospace; font-weight: 800; font-size: 1.1rem; margin-right: 24px; }
@keyframes marquee { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* Section Common */
.section { padding: 100px 0; border-bottom: 1px solid var(--border); }
.section-header { margin-bottom: 64px; }
.section-label { font-family: 'JetBrains Mono', monospace; color: var(--accent); margin-bottom: 16px; font-size: 0.9rem; }
.section-title { font-size: 3rem; }

/* Pricing */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.price-card { border: 1px solid var(--border); padding: 40px 32px; display: flex; flex-direction: column; }
.price-card.featured { background: var(--accent); color: var(--bg); border-color: var(--accent); transform: translateY(-8px); box-shadow: 12px 12px 0 rgba(200, 255, 62, 0.2); }
.price-card.featured h3, .price-card.featured .price-amount, .price-card.featured .price-desc, .price-card.featured .price-features li { color: var(--bg); }
.price-card.featured .price-currency, .price-card.featured .price-period { color: rgba(11, 14, 12, 0.6); }
.price-card.featured .btn { background: var(--bg); color: var(--accent); border-color: var(--bg); }
.price-card.featured .btn:hover { background: transparent; color: var(--bg); border-color: var(--bg); }
.price-name { font-size: 1.5rem; margin-bottom: 8px; }
.price-desc { font-family: 'JetBrains Mono', monospace; font-size: 0.85rem; color: var(--muted); margin-bottom: 32px; min-height: 40px; }
.price-display { margin-bottom: 32px; display: flex; align-items: baseline; }
.price-currency { font-family: 'JetBrains Mono', monospace; font-size: 1.5rem; color: var(--muted); }
.price-amount { font-size: 3.5rem; font-family: 'JetBrains Mono', monospace; font-weight: 800; line-height: 1; }
.price-period { font-family: 'JetBrains Mono', monospace; color: var(--muted); margin-left: 8px; }
.price-features { list-style: none; margin-bottom: 40px; flex-grow: 1; }
.price-features li { font-family: 'JetBrains Mono', monospace; font-size: 0.9rem; padding: 12px 0; border-bottom: 1px solid var(--border); color: var(--text); display: flex; align-items: center; }
.price-features li::before { content: ">"; color: var(--accent); margin-right: 12px; font-weight: 800; }
.price-card.featured .price-features li { border-bottom-color: rgba(11, 14, 12, 0.15); }
.price-card.featured .price-features li::before { color: var(--bg); }

/* External Link Banner */
.ext-banner { border: 1px solid var(--border); padding: 32px; display: flex; align-items: center; justify-content: space-between; margin-top: 64px; background: repeating-linear-gradient(-45deg, transparent, transparent 10px, rgba(200, 255, 62, 0.03) 10px, rgba(200, 255, 62, 0.03) 20px); }
.ext-banner-info h4 { font-size: 1.2rem; margin-bottom: 4px; }
.ext-banner-info p { color: var(--muted); font-size: 0.95rem; }

/* Subpages */
.page-header { padding: 80px 0 40px; border-bottom: 1px solid var(--border); margin-bottom: 60px; }
.page-header h1 { font-size: 3.5rem; line-height: 1.1; }
.content-block { max-width: 800px; margin: 0 auto 100px; font-size: 1.05rem; color: var(--text); }
.content-block h2 { font-size: 1.8rem; margin: 48px 0 24px; color: var(--accent); border-bottom: 1px solid var(--border); padding-bottom: 16px; }
.content-block p { margin-bottom: 24px; color: var(--muted); }
.content-block ul, .content-block ol { margin: 0 0 24px 24px; color: var(--muted); }
.content-block li { margin-bottom: 12px; }
.content-block strong { color: var(--text); }
.alert-box { border: 1px solid var(--accent); padding: 24px; margin: 32px 0; font-family: 'JetBrains Mono', monospace; font-size: 0.9rem; background: rgba(200, 255, 62, 0.05); }

/* Guide/Blog Styles */
.breadcrumb { font-family: "JetBrains Mono", monospace; margin-bottom: 24px; font-size: 0.85rem; color: var(--muted); }
.breadcrumb a { color: var(--accent); transition: 0.2s; }
.breadcrumb a:hover { color: var(--text); }
.article-meta { font-family: "JetBrains Mono", monospace; color: var(--muted); margin-bottom: 40px; border-bottom: 1px solid var(--border); padding-bottom: 16px; display: flex; gap: 24px; flex-wrap: wrap; }
.guide-card { border: 1px solid var(--border); padding: 32px; display: flex; flex-direction: column; background: var(--bg); transition: transform 0.2s; }
.guide-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.guide-card .meta { font-family: "JetBrains Mono", monospace; font-size: 0.8rem; color: var(--accent); margin-bottom: 12px; }
.guide-card h3 { font-size: 1.4rem; margin-bottom: 16px; color: var(--text); font-family: "Space Grotesk", sans-serif; letter-spacing: -0.02em; line-height: 1.3; }
.guide-card p { color: var(--muted); margin-bottom: 24px; flex-grow: 1; }
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 40px; }
.internal-link { color: var(--accent); text-decoration: underline; font-weight: bold; }

/* Floating Button & Article Nav & FAQ */
.floating-back-btn { position: fixed; bottom: 40px; right: 40px; background: var(--accent); color: var(--bg); padding: 16px 24px; font-family: "JetBrains Mono", monospace; font-weight: 800; border: none; box-shadow: 6px 6px 0 var(--border); transition: transform 0.2s, box-shadow 0.2s; z-index: 1000; text-transform: uppercase; letter-spacing: -0.05em; font-size: 0.95rem; display: flex; align-items: center; gap: 8px; }
.floating-back-btn:hover { transform: translate(-2px, -2px); box-shadow: 8px 8px 0 var(--border); color: var(--bg); }
.next-article-nav { margin-top: 64px; border-top: 2px solid var(--accent); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; font-family: "JetBrains Mono", monospace; }
.next-article-nav span { color: var(--muted); font-size: 0.85rem; }
.next-article-nav a { font-size: 1.2rem; font-weight: 800; color: var(--text); transition: color 0.2s; text-transform: uppercase; }
.next-article-nav a:hover { color: var(--accent); }
.hero-image { max-width: 100%; height: auto; border: 2px solid var(--accent); box-shadow: 8px 8px 0 var(--border); margin-top: 32px; filter: contrast(1.1) grayscale(0.2); }
.faq-container { display: flex; flex-direction: column; gap: 16px; margin-top: 32px; }
.faq-item { border: 1px solid var(--border); background: rgba(255,255,255,0.02); transition: border-color 0.2s; }
.faq-item:hover { border-color: var(--accent); }
.faq-item details { padding: 24px; }
.faq-item summary { list-style: none; display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-family: "Space Grotesk", sans-serif; font-size: 1.15rem; font-weight: 700; color: var(--text); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-answer { margin-top: 16px; color: var(--muted); border-top: 1px dashed var(--border); padding-top: 16px; font-size: 0.95rem; }

/* Credibility & E-E-A-T Additions */
.footer-grid { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 24px; margin-bottom: 48px; }
.social-links { display: flex; gap: 16px; font-family: "JetBrains Mono", monospace; font-size: 0.9rem; font-weight: 800; }
.social-links a { color: var(--accent); transition: 0.2s; text-decoration: underline; }
.social-links a:hover { color: var(--text); }
.trust-badge { display: flex; flex-direction: column; text-align: right; font-size: 0.8rem; color: var(--muted); gap: 4px; }
.trust-badge strong { color: var(--text); }
.reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 40px; }
.review-card { border: 1px solid var(--border); padding: 32px; background: rgba(255,255,255,0.02); display: flex; flex-direction: column; }
.review-card .stars { color: var(--accent); margin-bottom: 16px; font-size: 1.2rem; letter-spacing: 2px; }
.review-card p { font-size: 0.95rem; color: var(--text); font-style: italic; margin-bottom: 24px; flex-grow: 1; }
.review-card .author { font-family: "JetBrains Mono", monospace; font-size: 0.85rem; color: var(--muted); border-top: 1px dashed var(--border); padding-top: 16px; }

/* Affiliate Disclosure */
.aff-disclosure { font-family: "JetBrains Mono", monospace; font-size: 0.8rem; color: var(--muted); padding: 16px; border: 1px dashed var(--border); text-align: center; margin-top: 32px; background: rgba(255,255,255,0.02); line-height: 1.5; }
.aff-disclosure strong { color: var(--text); }

@media (max-width: 992px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-desc { margin: 0 auto 40px; }
  .pricing-grid { grid-template-columns: 1fr; }
  .ext-banner { flex-direction: column; text-align: center; gap: 24px; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero-title { font-size: 3.5rem; }
  .section-title { font-size: 2.2rem; }
  .footer-grid { flex-direction: column; text-align: center; justify-content: center; } 
  .trust-badge { text-align: center; } 
  .reviews-grid { grid-template-columns: 1fr; }
  .guide-grid { grid-template-columns: 1fr; }
  .price-card.featured { transform: none; box-shadow: none; }
  .floating-back-btn { bottom: 20px; right: 20px; padding: 12px 16px; font-size: 0.8rem; box-shadow: 4px 4px 0 var(--border); }
}