/* ============================================================
   中国区VPN (zoog-vpn.mom) - Neo-Brutalism Global Stylesheet
   Pure CSS - Ultra Lightweight & Zero Dependencies
   ============================================================ */

:root {
  --bg-cream: #F4F1EA;
  --black: #111111;
  --white: #FFFFFF;
  --accent-yellow: #FFD400;
  --accent-cyan: #8EF0FF;
  --accent-pink: #FFC9DE;
  --accent-green: #B8FF52;
  --accent-purple: #D5B3FF;
  --border-width: 3px;
  --shadow-offset: 6px;
  --shadow-main: 6px 6px 0 var(--black);
  --shadow-hover: 8px 8px 0 var(--black);
  --shadow-active: 2px 2px 0 var(--black);
  --font-display: 'Archivo Black', -apple-system, BlinkMacSystemFont, 'Segoe UI', Impact, 'Arial Black', sans-serif;
  --font-body: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Segoe UI', Roboto, sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-cream);
  color: var(--black);
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-cream);
  color: var(--black);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ================= Typography & Highlighters ================= */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--black);
}

h1 { font-size: clamp(2.2rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }

p {
  margin-bottom: 1rem;
  font-size: 1.05rem;
}

.marker-highlight {
  background: var(--accent-yellow);
  padding: 0.1em 0.4em;
  border-radius: 2px;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
  display: inline;
}

.marker-cyan { background: var(--accent-cyan); }
.marker-pink { background: var(--accent-pink); }
.marker-green { background: var(--accent-green); }

/* ================= Neo-Brutalism Badges & Slanted Stickers ================= */
.badge {
  display: inline-block;
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 900;
  text-transform: uppercase;
  border: var(--border-width) solid var(--black);
  box-shadow: 3px 3px 0 var(--black);
  letter-spacing: 0.05em;
  background: var(--accent-yellow);
}

.sticker {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.95rem;
  padding: 8px 16px;
  border: var(--border-width) solid var(--black);
  box-shadow: 4px 4px 0 var(--black);
  transform: rotate(-3deg);
  background: var(--accent-pink);
  margin-bottom: 12px;
}
.sticker.rotate-right {
  transform: rotate(3deg);
  background: var(--accent-cyan);
}
.sticker.rotate-straight {
  transform: rotate(0deg);
  background: var(--accent-green);
}

/* ================= Buttons with Physics ================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 900;
  text-decoration: none;
  color: var(--black);
  background: var(--accent-yellow);
  border: var(--border-width) solid var(--black);
  box-shadow: var(--shadow-main);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
  user-select: none;
  text-align: center;
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hover);
  background-color: #ffe033;
}

.btn:active {
  transform: translate(4px, 4px);
  box-shadow: var(--shadow-active);
}

.btn-cyan { background: var(--accent-cyan); }
.btn-cyan:hover { background: #b0f5ff; }

.btn-pink { background: var(--accent-pink); }
.btn-pink:hover { background: #ffd9e7; }

.btn-green { background: var(--accent-green); }
.btn-green:hover { background: #c7ff70; }

.btn-black {
  background: var(--black);
  color: var(--white);
}
.btn-black:hover {
  background: #2a2a2a;
  color: var(--white);
}

.btn-lg {
  padding: 18px 36px;
  font-size: 1.25rem;
}

.btn-block {
  width: 100%;
}

/* ================= Containers & Layout ================= */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 900px;
}

.section {
  padding: 80px 0;
  border-bottom: var(--border-width) solid var(--black);
}

.section-head {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px auto;
}

.section-head .subhead {
  font-size: 1.2rem;
  font-weight: 600;
  margin-top: 14px;
  color: #333;
}

/* ================= Header & Navigation ================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-cream);
  border-bottom: var(--border-width) solid var(--black);
  padding: 16px 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--black);
}

.logo-badge {
  background: var(--black);
  color: var(--accent-yellow);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.2rem;
  padding: 4px 10px;
  border: 2px solid var(--black);
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  font-weight: 700;
  font-size: 1rem;
  color: var(--black);
  text-decoration: none;
  padding: 6px 10px;
  border: 2px solid transparent;
  transition: all 0.15s ease;
}

.nav-link:hover {
  background: var(--accent-cyan);
  border: 2px solid var(--black);
  box-shadow: 2px 2px 0 var(--black);
}

.nav-link.active {
  background: var(--accent-yellow);
  border: 2px solid var(--black);
  box-shadow: 2px 2px 0 var(--black);
}

.nav-cta {
  font-size: 0.95rem;
  padding: 8px 18px;
}

/* ================= Hero Section ================= */
.hero-section {
  padding: 70px 0 80px 0;
  background: var(--bg-cream);
  border-bottom: var(--border-width) solid var(--black);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.hero-title {
  margin: 16px 0 20px 0;
  line-height: 1.15;
}

.hero-desc {
  font-size: 1.25rem;
  line-height: 1.6;
  margin-bottom: 32px;
  font-weight: 500;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}

.hero-guarantee {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.95rem;
  font-weight: 700;
}

.hero-guarantee span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-visual-card {
  background: var(--white);
  border: var(--border-width) solid var(--black);
  box-shadow: var(--shadow-main);
  padding: 28px;
  position: relative;
}

.visual-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: var(--border-width) solid var(--black);
  padding-bottom: 14px;
  margin-bottom: 20px;
}

.window-dots {
  display: flex;
  gap: 8px;
}

.window-dot {
  width: 14px;
  height: 14px;
  border: 2px solid var(--black);
  border-radius: 50%;
}
.window-dot.red { background: #FF5F56; }
.window-dot.yellow { background: #FFBD2E; }
.window-dot.green { background: #27C93F; }

.speedometer {
  background: var(--bg-cream);
  border: var(--border-width) solid var(--black);
  padding: 24px;
  text-align: center;
  margin-bottom: 20px;
  box-shadow: 4px 4px 0 var(--black);
}

.speed-metric {
  font-family: var(--font-display);
  font-size: 3.2rem;
  color: var(--black);
  line-height: 1;
  margin: 10px 0;
}

.speed-unit {
  font-size: 1.1rem;
  font-weight: 800;
  text-transform: uppercase;
}

.status-pills {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.status-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  background: var(--white);
  border: 2px solid var(--black);
  font-weight: 700;
  font-size: 0.95rem;
}

.status-badge {
  padding: 2px 8px;
  font-size: 0.8rem;
  font-weight: 900;
  border: 2px solid var(--black);
  background: var(--accent-green);
}

/* ================= Marquee Banner ================= */
.marquee-wrap {
  background: var(--black);
  color: var(--white);
  padding: 16px 0;
  overflow: hidden;
  white-space: nowrap;
  border-bottom: var(--border-width) solid var(--black);
  position: relative;
}

.marquee-content {
  display: inline-block;
  animation: marquee 24s linear infinite;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 900;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.marquee-content span {
  padding: 0 16px;
  color: var(--accent-yellow);
}

@keyframes marquee {
  0% { transform: translateX(0%); }
  100% { transform: translateX(-50%); }
}

/* ================= Core Feature Cards (3 Cards) ================= */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--white);
  border: var(--border-width) solid var(--black);
  box-shadow: var(--shadow-main);
  padding: 32px 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  position: relative;
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 10px 10px 0 var(--black);
}

.feature-card.card-yellow { background: #FFFDE6; }
.feature-card.card-cyan { background: #EDFCFF; }
.feature-card.card-pink { background: #FFF0F5; }

.card-tag {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--font-display);
  font-size: 0.85rem;
  padding: 4px 10px;
  border: 2px solid var(--black);
  background: var(--black);
  color: var(--white);
  margin-bottom: 18px;
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  line-height: 1;
}

.feature-title {
  margin-bottom: 14px;
  font-size: 1.45rem;
}

.feature-text {
  font-size: 1rem;
  color: #222;
  flex-grow: 1;
  margin-bottom: 20px;
}

.card-highlight-list {
  list-style: none;
  border-top: 2px dashed var(--black);
  padding-top: 14px;
  font-weight: 700;
  font-size: 0.95rem;
}

.card-highlight-list li {
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ================= Streaming & AI Support Grid ================= */
.media-ai-section {
  background: #FAFAFA;
}

.apps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.app-card {
  background: var(--white);
  border: var(--border-width) solid var(--black);
  box-shadow: 4px 4px 0 var(--black);
  padding: 20px;
  text-align: center;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.app-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 7px 7px 0 var(--black);
}

.app-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  border: 2px solid var(--black);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 12px auto;
  font-weight: 900;
}

.app-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 6px;
}

.app-desc {
  font-size: 0.9rem;
  color: #555;
  margin-bottom: 0;
}

.app-status {
  display: inline-block;
  margin-top: 10px;
  font-size: 0.75rem;
  font-weight: 900;
  padding: 2px 8px;
  border: 1px solid var(--black);
  background: var(--accent-green);
}

/* ================= Pricing Comparison Table ================= */
.pricing-section {
  background: var(--bg-cream);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.price-card {
  background: var(--white);
  border: var(--border-width) solid var(--black);
  box-shadow: var(--shadow-main);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.price-card.featured {
  background: #FFFDF0;
  border: 4px solid var(--black);
  box-shadow: 10px 10px 0 var(--black);
  transform: scale(1.03);
  z-index: 10;
}

.popular-ribbon {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-pink);
  border: var(--border-width) solid var(--black);
  padding: 4px 16px;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 900;
  white-space: nowrap;
}

.price-header {
  border-bottom: 2px dashed var(--black);
  padding-bottom: 20px;
  margin-bottom: 20px;
  text-align: center;
}

.plan-title {
  font-size: 1.5rem;
  margin-bottom: 6px;
}

.plan-duration {
  font-size: 0.95rem;
  color: #666;
  font-weight: 600;
}

.price-box {
  margin: 16px 0 8px 0;
}

.price-currency {
  font-size: 1.5rem;
  font-weight: 900;
  vertical-align: top;
}

.price-amount {
  font-family: var(--font-display);
  font-size: 3.4rem;
  line-height: 1;
}

.price-period {
  font-size: 1rem;
  font-weight: 700;
  color: #444;
}

.price-savings {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.85rem;
  font-weight: 900;
  background: var(--accent-yellow);
  border: 2px solid var(--black);
  margin-top: 6px;
}

.features-list {
  list-style: none;
  flex-grow: 1;
  margin-bottom: 28px;
}

.features-list li {
  padding: 10px 0;
  border-bottom: 1px solid #e0e0e0;
  font-size: 0.95rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

.features-list li:last-child {
  border-bottom: none;
}

.check-icon {
  font-weight: 900;
  color: var(--black);
  background: var(--accent-green);
  border: 1px solid var(--black);
  width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
}

/* ================= FAQ Accordion (<details>) ================= */
.faq-section {
  background: var(--white);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  border: var(--border-width) solid var(--black);
  background: var(--bg-cream);
  box-shadow: 4px 4px 0 var(--black);
  transition: all 0.15s ease;
}

.faq-item[open] {
  background: #FFFCE6;
  box-shadow: 6px 6px 0 var(--black);
}

.faq-item summary {
  padding: 20px 24px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 900;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.8rem;
  font-family: monospace;
  font-weight: 900;
  line-height: 1;
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  content: "−";
  transform: rotate(0deg);
}

.faq-content {
  padding: 0 24px 22px 24px;
  font-size: 1.05rem;
  line-height: 1.7;
  color: #222;
  border-top: 2px dashed var(--black);
  margin-top: 4px;
  padding-top: 18px;
}

/* ================= User Reviews / Testimonials ================= */
.testimonials-section {
  background: var(--bg-cream);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--white);
  border: var(--border-width) solid var(--black);
  box-shadow: var(--shadow-main);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.test-stars {
  color: var(--black);
  font-size: 1.2rem;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.test-body {
  font-style: normal;
  font-size: 0.98rem;
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

.test-author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 2px solid var(--black);
  padding-top: 14px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border: 2px solid var(--black);
  border-radius: 50%;
  background: var(--accent-yellow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 900;
}

.author-info h4 {
  font-size: 1rem;
  margin: 0;
}

.author-info span {
  font-size: 0.8rem;
  color: #666;
  font-weight: 700;
}

/* ================= Black CTA Banner ================= */
.cta-banner-section {
  background: var(--black);
  color: var(--white);
  padding: 80px 0;
  text-align: center;
  border-bottom: var(--border-width) solid var(--black);
}

.cta-banner-section h2 {
  color: var(--white);
  margin-bottom: 16px;
}

.cta-banner-section p {
  color: #cccccc;
  font-size: 1.25rem;
  max-width: 720px;
  margin: 0 auto 36px auto;
}

/* ================= Footer (Strict 4 Links) ================= */
.site-footer {
  background: var(--bg-cream);
  padding: 50px 0 40px 0;
  border-top: var(--border-width) solid var(--black);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 32px;
}

.footer-link {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--black);
  text-decoration: none;
  padding: 6px 14px;
  border: 2px solid var(--black);
  background: var(--white);
  box-shadow: 3px 3px 0 var(--black);
  transition: all 0.15s ease;
}

.footer-link:hover {
  background: var(--accent-yellow);
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--black);
}

.footer-copy {
  font-size: 0.9rem;
  color: #555;
  font-weight: 600;
  text-align: center;
}

/* ================= Content / Article Styling ================= */
.article-header {
  padding: 60px 0 40px 0;
  border-bottom: var(--border-width) solid var(--black);
  background: #FFFEEB;
}

.breadcrumbs {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: #555;
}

.breadcrumbs a {
  color: var(--black);
  text-decoration: none;
  border-bottom: 2px solid var(--black);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.9rem;
  font-weight: 700;
  color: #444;
  margin-top: 14px;
}

.article-content {
  padding: 60px 0;
  font-size: 1.1rem;
  line-height: 1.85;
}

.article-content h2 {
  margin: 44px 0 18px 0;
  padding-bottom: 8px;
  border-bottom: 3px solid var(--black);
}

.article-content h3 {
  margin: 32px 0 14px 0;
}

.article-content p {
  margin-bottom: 1.4rem;
}

.article-content ul, .article-content ol {
  margin-bottom: 1.6rem;
  padding-left: 28px;
}

.article-content li {
  margin-bottom: 8px;
}

.article-content blockquote {
  border-left: 6px solid var(--black);
  background: var(--white);
  padding: 18px 24px;
  margin: 28px 0;
  box-shadow: 4px 4px 0 var(--black);
  font-weight: 600;
}

.article-content a {
  color: var(--black);
  font-weight: 800;
  text-decoration: underline;
  text-decoration-thickness: 2px;
}

.article-content a:hover {
  background: var(--accent-yellow);
}

.callout-box {
  background: #EDFCFF;
  border: var(--border-width) solid var(--black);
  box-shadow: 6px 6px 0 var(--black);
  padding: 24px;
  margin: 32px 0;
}

.callout-box.warning {
  background: #FFF2F2;
}

.callout-box h4 {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

/* ================= News List Cards ================= */
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.news-card {
  background: var(--white);
  border: var(--border-width) solid var(--black);
  box-shadow: var(--shadow-main);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.news-card:hover {
  transform: translateY(-5px);
  box-shadow: 10px 10px 0 var(--black);
}

.news-card h3 {
  margin: 12px 0;
}

.news-card p {
  color: #444;
  font-size: 0.98rem;
  flex-grow: 1;
}

.news-read-more {
  align-self: flex-start;
  margin-top: 14px;
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--black);
  text-decoration: none;
  border-bottom: 3px solid var(--black);
  padding-bottom: 2px;
}

/* ================= Responsive Queries (@media) ================= */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .apps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 540px;
    margin: 0 auto;
  }
  .price-card.featured {
    transform: none;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 12px 0;
  }
  .header-inner {
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
  }
  .site-nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
  }
  .nav-link {
    font-size: 0.9rem;
    padding: 4px 8px;
  }
  .hero-section {
    padding: 40px 0 50px 0;
  }
  .hero-desc {
    font-size: 1.1rem;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .btn {
    width: 100%;
    min-height: 48px;
  }
  .speed-metric {
    font-size: 2.6rem;
  }
  .footer-nav {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }
  .footer-link {
    text-align: center;
    width: 100%;
    display: block;
  }
  .apps-grid {
    grid-template-columns: 1fr;
  }
}