/* ===================================================================
   YKKCLOUD - Y2K Neo-Brutalist Pure CSS
   Zero external dependencies, ultra-fast loading, responsive design
   =================================================================== */

:root {
  --bg-cream: #FAF7EE;
  --bg-card: #FFFFFF;
  --black: #000000;
  --electric-yellow: #FFE500;
  --hot-pink: #FF2A85;
  --cobalt-blue: #0047FF;
  --lime-green: #00E054;
  --neon-cyan: #00E5FF;
  --border-width: 3px;
  --shadow-offset: 5px;
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-cream);
  color: var(--black);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ================= Neo-Brutalist Foundations ================= */
.brutal-box {
  background-color: var(--bg-card);
  border: var(--border-width) solid var(--black);
  box-shadow: var(--shadow-offset) var(--shadow-offset) 0px var(--black);
}

.brutal-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-main);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-decoration: none;
  color: var(--black);
  padding: 14px 28px;
  border: var(--border-width) solid var(--black);
  box-shadow: var(--shadow-offset) var(--shadow-offset) 0px var(--black);
  background-color: var(--electric-yellow);
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.1s ease, background-color 0.1s ease;
  user-select: none;
}

.brutal-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: calc(var(--shadow-offset) + 2px) calc(var(--shadow-offset) + 2px) 0px var(--black);
}

.brutal-btn:active {
  transform: translate(3px, 3px);
  box-shadow: 2px 2px 0px var(--black);
}

.brutal-btn.btn-pink {
  background-color: var(--hot-pink);
  color: #FFFFFF;
}

.brutal-btn.btn-blue {
  background-color: var(--cobalt-blue);
  color: #FFFFFF;
}

.brutal-btn.btn-cyan {
  background-color: var(--neon-cyan);
  color: var(--black);
}

.brutal-btn.btn-lime {
  background-color: var(--lime-green);
  color: var(--black);
}

.brutal-btn.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
  box-shadow: 3px 3px 0px var(--black);
}

.brutal-btn.btn-lg {
  padding: 18px 36px;
  font-size: 18px;
  box-shadow: 6px 6px 0px var(--black);
}

/* Badges / Stickers */
.sticker-badge {
  display: inline-block;
  padding: 4px 12px;
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
  border: 2px solid var(--black);
  box-shadow: 3px 3px 0px var(--black);
  background-color: var(--electric-yellow);
  color: var(--black);
}

.badge-rotate-left {
  transform: rotate(-3deg);
}

.badge-rotate-right {
  transform: rotate(3deg);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ================= Header & Nav ================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--bg-cream);
  border-bottom: var(--border-width) solid var(--black);
  padding: 14px 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--black);
}

.logo-badge {
  background-color: var(--electric-yellow);
  color: var(--black);
  font-weight: 900;
  font-size: 20px;
  padding: 6px 14px;
  border: var(--border-width) solid var(--black);
  box-shadow: 3px 3px 0px var(--black);
  letter-spacing: 1px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
}

.nav-link {
  text-decoration: none;
  color: var(--black);
  font-weight: 800;
  font-size: 15px;
  padding: 6px 12px;
  border: 2px solid transparent;
  transition: all 0.15s ease;
}

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

.nav-link.nav-highlight {
  background-color: var(--hot-pink);
  color: #FFFFFF;
  border: 2px solid var(--black);
  box-shadow: 2px 2px 0px var(--black);
}

.nav-link.nav-highlight:hover {
  background-color: var(--electric-yellow);
  color: var(--black);
}

/* ================= Marquee Ticker ================= */
.marquee-bar {
  background-color: var(--black);
  color: var(--electric-yellow);
  border-bottom: var(--border-width) solid var(--black);
  padding: 10px 0;
  overflow: hidden;
  white-space: nowrap;
  font-weight: 900;
  font-size: 14px;
  letter-spacing: 1px;
}

.marquee-content {
  display: inline-block;
  animation: marqueeAnimation 22s linear infinite;
}

.marquee-item {
  display: inline-block;
  margin: 0 25px;
}

.marquee-item span {
  color: var(--hot-pink);
  margin-right: 8px;
}

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

/* ================= Hero Section ================= */
.hero-section {
  padding: 60px 0 70px;
  position: relative;
}

.hero-wrapper {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.hero-content {
  position: relative;
}

.hero-tag-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.hero-title {
  font-size: 46px;
  font-weight: 950;
  line-height: 1.15;
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}

.hero-title .brand-highlight {
  background-color: var(--electric-yellow);
  padding: 0 8px;
  border: 2px solid var(--black);
  box-shadow: 3px 3px 0px var(--black);
  display: inline-block;
}

.hero-title .accent-pink {
  color: var(--hot-pink);
  text-shadow: 2px 2px 0px var(--black);
}

.hero-subtitle {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 16px;
  color: #111;
}

.hero-intro {
  font-size: 16px;
  color: #333;
  margin-bottom: 30px;
  line-height: 1.75;
  background-color: #FFFFFF;
  padding: 16px 20px;
  border: var(--border-width) solid var(--black);
  box-shadow: 4px 4px 0px var(--black);
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 25px;
}

.hero-guarantee {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 13px;
  font-weight: 800;
  color: #222;
}

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

/* Hero Right Visual Card */
.hero-card {
  padding: 30px;
  background-color: #FFFFFF;
  position: relative;
}

.hero-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid var(--black);
  padding-bottom: 15px;
  margin-bottom: 20px;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

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

.live-badge {
  background-color: var(--lime-green);
  font-size: 12px;
  font-weight: 900;
  padding: 4px 8px;
  border: 2px solid var(--black);
}

.speed-metric-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  margin-bottom: 20px;
}

.metric-item {
  padding: 14px;
  background-color: var(--bg-cream);
  border: 2px solid var(--black);
  box-shadow: 3px 3px 0px var(--black);
}

.metric-label {
  font-size: 12px;
  font-weight: 800;
  color: #555;
  text-transform: uppercase;
}

.metric-value {
  font-size: 26px;
  font-weight: 950;
  color: var(--black);
  margin-top: 4px;
}

.metric-value.highlight-green {
  color: #059669;
}

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

.node-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background-color: #F8F9FA;
  border: 2px solid var(--black);
  font-size: 13px;
  font-weight: 700;
}

.node-flag {
  display: flex;
  align-items: center;
  gap: 8px;
}

.node-ping {
  font-family: var(--font-mono);
  font-weight: 900;
  color: #059669;
}

/* ================= Section Header ================= */
.section-header {
  text-align: center;
  margin-bottom: 50px;
  position: relative;
}

.section-tag {
  margin-bottom: 12px;
}

.section-title {
  font-size: 36px;
  font-weight: 950;
  line-height: 1.2;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 16px;
  color: #555;
  max-width: 650px;
  margin: 0 auto;
  font-weight: 600;
}

/* ================= Core Advantages (3 Cards) ================= */
.advantages-section {
  padding: 60px 0;
}

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

.advantage-card {
  padding: 30px 24px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.card-num {
  position: absolute;
  top: -16px;
  right: -10px;
  background-color: var(--black);
  color: var(--electric-yellow);
  font-size: 18px;
  font-weight: 950;
  padding: 4px 12px;
  border: 2px solid var(--black);
  box-shadow: 2px 2px 0px var(--black);
}

.advantage-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  border: var(--border-width) solid var(--black);
  box-shadow: 3px 3px 0px var(--black);
  margin-bottom: 20px;
}

.card-yellow .advantage-icon { background-color: var(--electric-yellow); }
.card-pink .advantage-icon { background-color: var(--hot-pink); color: #FFF; }
.card-blue .advantage-icon { background-color: var(--neon-cyan); }

.advantage-card h3 {
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 12px;
}

.advantage-card p {
  font-size: 15px;
  color: #333;
  line-height: 1.65;
  margin-bottom: 18px;
}

.card-perks {
  list-style: none;
  border-top: 2px dashed var(--black);
  padding-top: 14px;
}

.card-perks li {
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ================= Streaming & AI Showcase ================= */
.showcase-section {
  padding: 60px 0;
  background-color: #F4EEDB;
  border-top: var(--border-width) solid var(--black);
  border-bottom: var(--border-width) solid var(--black);
}

.showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.showcase-card {
  padding: 32px;
}

.showcase-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.showcase-card h3 {
  font-size: 24px;
  font-weight: 950;
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-badge {
  font-size: 24px;
}

.showcase-card p {
  font-size: 15px;
  color: #444;
  margin-bottom: 24px;
  line-height: 1.6;
}

.app-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 25px;
}

.app-pill {
  padding: 8px 16px;
  background-color: var(--bg-cream);
  border: 2px solid var(--black);
  box-shadow: 2px 2px 0px var(--black);
  font-weight: 800;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.app-pill.highlight {
  background-color: var(--electric-yellow);
}

.showcase-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding-top: 18px;
  border-top: 2px solid var(--black);
}

.s-feature {
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ================= Pricing Section ================= */
.pricing-section {
  padding: 70px 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  align-items: stretch;
}

.pricing-card {
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: transform 0.15s ease;
}

.pricing-card:hover {
  transform: translateY(-4px);
}

.pricing-card.featured-card {
  background-color: #FFFDF5;
  border-width: 4px;
  transform: scale(1.02);
  z-index: 2;
  box-shadow: 7px 7px 0px var(--black);
}

.pricing-badge-wrapper {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%) rotate(-2deg);
}

.pricing-header {
  border-bottom: 2px solid var(--black);
  padding-bottom: 18px;
  margin-bottom: 18px;
  text-align: center;
}

.plan-name {
  font-size: 20px;
  font-weight: 950;
  margin-bottom: 4px;
}

.plan-target {
  font-size: 12px;
  font-weight: 700;
  color: #666;
}

.price-row {
  margin-top: 14px;
  display: flex;
  align-items: baseline;
  justify-content: center;
}

.currency {
  font-size: 20px;
  font-weight: 900;
}

.price-num {
  font-size: 44px;
  font-weight: 950;
  line-height: 1;
  color: var(--black);
}

.period {
  font-size: 14px;
  font-weight: 700;
  color: #666;
  margin-left: 4px;
}

.plan-features {
  list-style: none;
  margin-bottom: 25px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.plan-features li {
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  line-height: 1.4;
}

.plan-features li.strong {
  font-weight: 900;
  color: var(--black);
}

.plan-cta {
  width: 100%;
}

/* ================= Reviews / Testimonials ================= */
.reviews-section {
  padding: 60px 0;
  background-color: #FFF6EC;
  border-top: var(--border-width) solid var(--black);
  border-bottom: var(--border-width) solid var(--black);
}

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

.review-card {
  padding: 24px;
  background-color: #FFFFFF;
}

.review-rating {
  color: #FFA500;
  font-size: 18px;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 14px;
  font-style: italic;
  color: #222;
  line-height: 1.6;
  margin-bottom: 18px;
}

.reviewer-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 2px dashed #000;
  padding-top: 12px;
}

.reviewer-name {
  font-weight: 900;
  font-size: 14px;
}

.reviewer-role {
  font-size: 12px;
  font-weight: 700;
  color: #666;
  background-color: var(--bg-cream);
  padding: 2px 6px;
  border: 1px solid #000;
}

/* ================= FAQ Section ================= */
.faq-section {
  padding: 70px 0;
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.faq-item {
  padding: 22px 24px;
  background-color: #FFFFFF;
}

.faq-question {
  font-size: 18px;
  font-weight: 900;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.faq-q-badge {
  background-color: var(--electric-yellow);
  color: var(--black);
  font-size: 13px;
  padding: 2px 8px;
  border: 2px solid var(--black);
  box-shadow: 2px 2px 0px var(--black);
}

.faq-answer {
  font-size: 14px;
  color: #333;
  line-height: 1.7;
  padding-left: 36px;
}

/* ================= Bottom CTA ================= */
.bottom-cta-section {
  padding: 60px 0;
}

.bottom-cta-box {
  background-color: var(--electric-yellow);
  padding: 45px 30px;
  text-align: center;
  border: var(--border-width) solid var(--black);
  box-shadow: 8px 8px 0px var(--black);
}

.bottom-cta-title {
  font-size: 34px;
  font-weight: 950;
  margin-bottom: 12px;
}

.bottom-cta-desc {
  font-size: 17px;
  font-weight: 700;
  color: #222;
  margin-bottom: 28px;
}

/* ================= Footer ================= */
.site-footer {
  background-color: var(--black);
  color: #FFFFFF;
  padding: 40px 0 35px;
  border-top: var(--border-width) solid var(--black);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
  text-align: center;
}

.footer-brand {
  font-size: 22px;
  font-weight: 950;
  color: var(--electric-yellow);
  letter-spacing: 1px;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  list-style: none;
  flex-wrap: wrap;
}

.footer-link {
  color: #FFFFFF;
  text-decoration: none;
  font-weight: 800;
  font-size: 15px;
  padding: 6px 14px;
  border: 2px solid #FFFFFF;
  background-color: #111;
  transition: all 0.15s ease;
}

.footer-link:hover {
  background-color: var(--hot-pink);
  color: #FFFFFF;
  border-color: var(--hot-pink);
  box-shadow: 3px 3px 0px #FFFFFF;
}

.footer-copy {
  font-size: 12px;
  color: #888;
  font-weight: 600;
}

/* ================= Article & Static Content Layouts ================= */
.article-header {
  padding: 50px 0 30px;
  border-bottom: var(--border-width) solid var(--black);
  background-color: #FFFDF5;
}

.article-meta {
  display: flex;
  gap: 16px;
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.article-title {
  font-size: 34px;
  font-weight: 950;
  line-height: 1.25;
  margin-bottom: 16px;
}

.article-body {
  padding: 50px 0 70px;
}

.article-content {
  max-width: 860px;
  margin: 0 auto;
  background-color: #FFFFFF;
  padding: 40px;
  border: var(--border-width) solid var(--black);
  box-shadow: 6px 6px 0px var(--black);
  font-size: 16px;
  line-height: 1.85;
}

.article-content h2 {
  font-size: 24px;
  font-weight: 950;
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--black);
}

.article-content h3 {
  font-size: 19px;
  font-weight: 900;
  margin: 24px 0 12px;
}

.article-content p {
  margin-bottom: 20px;
  color: #222;
}

.article-content ul, .article-content ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

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

.article-content blockquote {
  border-left: 5px solid var(--electric-yellow);
  background-color: var(--bg-cream);
  padding: 16px 20px;
  margin: 24px 0;
  font-weight: 700;
  border: 2px solid var(--black);
  border-left-width: 8px;
}

.article-content a {
  color: var(--cobalt-blue);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-content a:hover {
  background-color: var(--electric-yellow);
  color: var(--black);
}

.article-list-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.article-card-item {
  padding: 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.article-card-item h3 {
  font-size: 20px;
  font-weight: 900;
  margin: 10px 0 12px;
  line-height: 1.35;
}

.article-card-item p {
  font-size: 14px;
  color: #444;
  margin-bottom: 20px;
  line-height: 1.6;
}

/* ================= Responsive Queries ================= */
@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .advantages-grid {
    grid-template-columns: 1fr;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hero-wrapper {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .hero-title {
    font-size: 32px;
  }

  .nav-menu {
    gap: 10px;
  }

  .nav-link {
    font-size: 13px;
    padding: 4px 8px;
  }

  .showcase-grid {
    grid-template-columns: 1fr;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .article-list-grid {
    grid-template-columns: 1fr;
  }

  .brutal-btn {
    width: 100%;
    text-align: center;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .footer-nav {
    flex-direction: column;
    gap: 12px;
    width: 100%;
  }

  .footer-link {
    width: 100%;
    text-align: center;
  }

  .article-content {
    padding: 22px;
  }
}