:root {
  --bg-cream: #FDF6EC;
  --card-peach: #FFE8D6;
  --card-mint: #DCF5E7;
  --card-sky: #DBEAFE;
  --card-pink: #FCE7F3;
  --card-lemon: #FEF9C3;
  --card-white: #FFFFFF;
  --ink: #3B3B3B;
  --ink-muted: #666666;
  --coral: #FF7A59;
  --coral-hover: #FF623D;
  --coral-soft: rgba(255, 122, 89, 0.14);
  --mint-dot: #10B981;
  --shadow-soft: 0 12px 32px rgba(59, 59, 59, 0.06);
  --shadow-hover: 0 18px 42px rgba(59, 59, 59, 0.12);
  --radius-card: 26px;
  --radius-pill: 999px;
  --font-heading: "Quicksand", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Nunito", "PingFang SC", "Microsoft YaHei", sans-serif;
  --container-max: 1180px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-cream);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .brand-logo {
  font-family: var(--font-heading);
  margin-top: 0;
  color: var(--ink);
  line-height: 1.3;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

/* Floating Capsule Navbar */
.site-header {
  position: sticky;
  top: 16px;
  z-index: 100;
  padding: 0 16px;
  margin-top: 16px;
}

.nav-capsule {
  max-width: var(--container-max);
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-pill);
  padding: 10px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-soft);
  border: 2px solid rgba(255, 255, 255, 0.9);
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  min-height: 44px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.nav-links a:hover {
  background-color: var(--card-peach);
  color: var(--coral-hover);
  transform: translateY(-1px);
}

.nav-links a.nav-highlight {
  background-color: var(--card-lemon);
  color: var(--ink);
}

.nav-links a.nav-highlight:hover {
  background-color: var(--coral);
  color: #FFFFFF;
}

.nav-toggle {
  display: none;
  background: var(--card-peach);
  border: none;
  border-radius: var(--radius-pill);
  min-width: 44px;
  min-height: 44px;
  padding: 0 14px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
}

/* Buttons */
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 26px;
  border-radius: var(--radius-pill);
  font-weight: 800;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: transform 0.22s ease, box-shadow 0.22s ease, background-color 0.22s ease;
}

.btn-primary {
  background-color: var(--coral);
  color: #FFFFFF;
  box-shadow: 0 8px 20px rgba(255, 122, 89, 0.32);
}

.btn-primary:hover {
  background-color: var(--coral-hover);
  transform: translateY(-3px);
  box-shadow: 0 12px 26px rgba(255, 122, 89, 0.42);
}

.btn-secondary {
  background-color: var(--card-white);
  color: var(--ink);
  border: 2px solid #F0DFD0;
  box-shadow: 0 6px 16px rgba(59, 59, 59, 0.05);
}

.btn-secondary:hover {
  background-color: var(--card-sky);
  border-color: #BFDBFE;
  transform: translateY(-3px);
}

/* Bento Card Base */
.bento-card {
  border-radius: var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-soft);
  transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.28s ease;
  position: relative;
  overflow: hidden;
}

.bento-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.bg-peach { background-color: var(--card-peach); }
.bg-mint { background-color: var(--card-mint); }
.bg-sky { background-color: var(--card-sky); }
.bg-pink { background-color: var(--card-pink); }
.bg-lemon { background-color: var(--card-lemon); }
.bg-white { background-color: var(--card-white); }

/* Hero Bento Grid: 3 columns on desktop */
.hero-section {
  padding: 36px 0 28px;
}

.hero-bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: stretch;
}

.hero-main-card {
  grid-column: span 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 38px 36px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  align-self: flex-start;
  background: var(--card-white);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--coral);
  margin-bottom: 16px;
  box-shadow: 0 4px 12px rgba(59, 59, 59, 0.05);
}

.hero-main-card h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.hero-main-card h1 .accent {
  color: var(--coral);
}

.hero-subtitle {
  font-size: 1.08rem;
  color: var(--ink-muted);
  margin: 0;
  max-width: 600px;
}

/* Mascot Card */
.mascot-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: pointer;
  user-select: none;
}

.mascot-emoji {
  font-size: 5rem;
  line-height: 1;
  display: inline-block;
  animation: gentleBounce 2.8s ease-in-out infinite;
  margin-bottom: 14px;
}

.mascot-emoji.wiggle {
  animation: cowWiggle 0.55s ease-in-out;
}

.speech-bubble {
  background: var(--card-white);
  padding: 12px 18px;
  border-radius: 20px;
  font-weight: 800;
  font-size: 0.98rem;
  box-shadow: 0 6px 18px rgba(59, 59, 59, 0.07);
  position: relative;
  max-width: 240px;
}

.mascot-tip {
  margin-top: 10px;
  font-size: 0.82rem;
  color: var(--ink-muted);
  font-weight: 700;
}

@keyframes gentleBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

@keyframes cowWiggle {
  0% { transform: rotate(0deg) scale(1); }
  20% { transform: rotate(-14deg) scale(1.12); }
  40% { transform: rotate(12deg) scale(1.14); }
  60% { transform: rotate(-10deg) scale(1.1); }
  80% { transform: rotate(8deg) scale(1.05); }
  100% { transform: rotate(0deg) scale(1); }
}

/* Speed Card */
.speed-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.78);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-weight: 800;
  font-size: 0.88rem;
  align-self: flex-start;
}

.pulse-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--mint-dot);
  position: relative;
}

.pulse-dot::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background-color: rgba(16, 185, 129, 0.4);
  animation: pulseRing 1.8s ease-out infinite;
}

@keyframes pulseRing {
  0% { transform: scale(0.8); opacity: 0.9; }
  100% { transform: scale(2.1); opacity: 0; }
}

.speed-number {
  font-family: var(--font-heading);
  font-size: 2.35rem;
  font-weight: 700;
  margin: 14px 0 4px;
  color: #065F46;
}

.speed-sub {
  font-weight: 700;
  font-size: 0.95rem;
  color: #047857;
  margin: 0;
}

/* Device Card */
.device-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.device-icons {
  font-size: 1.15rem;
  font-weight: 800;
  background: rgba(255, 255, 255, 0.78);
  padding: 12px 16px;
  border-radius: 18px;
  margin-bottom: 14px;
  text-align: center;
}

.card-title-sm {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.card-desc-sm {
  margin: 0;
  font-size: 0.94rem;
  color: var(--ink-muted);
}

/* Globe Card */
.globe-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.globe-card img {
  width: 84px;
  height: 84px;
  flex-shrink: 0;
}

/* 4 Mini Feature Blocks */
.mini-features-section {
  padding: 12px 0 36px;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.mini-card {
  border-radius: 24px;
  padding: 20px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--card-white);
  box-shadow: var(--shadow-soft);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.mini-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.mini-icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
}

.mini-card h3 {
  font-size: 1.02rem;
  margin: 0 0 2px;
}

.mini-card p {
  margin: 0;
  font-size: 0.84rem;
  color: var(--ink-muted);
}

/* Section Headers */
.section-block {
  padding: 40px 0;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 32px;
}

.section-tag {
  display: inline-block;
  background: var(--card-peach);
  color: var(--coral-hover);
  font-weight: 800;
  font-size: 0.85rem;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 10px;
}

.section-header h2 {
  font-size: clamp(1.65rem, 3vw, 2.25rem);
  margin-bottom: 10px;
}

.section-header p {
  margin: 0;
  color: var(--ink-muted);
}

/* 3 Advantages Grid */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.adv-card img {
  width: 100%;
  height: 170px;
  object-fit: contain;
  margin-bottom: 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.7);
  padding: 12px;
}

.adv-card h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.adv-card p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.96rem;
}

/* Streaming & AI 2-col Grid */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.media-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.media-card img {
  width: 100%;
  height: 200px;
  object-fit: contain;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.78);
  padding: 14px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  display: inline-block;
  background: var(--card-white);
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.86rem;
  font-weight: 700;
  box-shadow: 0 3px 10px rgba(59, 59, 59, 0.05);
}

/* Pricing Grid */
.pricing-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--card-white);
}

.pricing-card.featured {
  background: var(--coral);
  color: #FFFFFF;
  box-shadow: 0 18px 40px rgba(255, 122, 89, 0.28);
}

.pricing-card.featured h3,
.pricing-card.featured .price-value,
.pricing-card.featured .price-period,
.pricing-card.featured li {
  color: #FFFFFF;
}

.popular-badge {
  display: inline-block;
  align-self: flex-start;
  background: var(--card-lemon);
  color: var(--ink);
  font-weight: 800;
  font-size: 0.85rem;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}

.plan-badge {
  display: inline-block;
  align-self: flex-start;
  background: var(--card-peach);
  color: var(--ink);
  font-weight: 800;
  font-size: 0.85rem;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}

.price-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 8px 0 18px;
}

.price-value {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
}

.price-period {
  font-size: 0.95rem;
  color: var(--ink-muted);
  font-weight: 700;
}

.feature-list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.96rem;
  font-weight: 600;
}

.pricing-card.featured .btn-primary {
  background: var(--card-white);
  color: var(--coral-hover);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.14);
}

.pricing-card.featured .btn-primary:hover {
  background: var(--card-lemon);
  color: var(--ink);
}

/* Reviews */
.review-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.stars {
  color: #F59E0B;
  font-size: 1.15rem;
  margin-bottom: 10px;
  letter-spacing: 2px;
}

.review-text {
  margin: 0 0 18px;
  font-size: 0.97rem;
}

.reviewer {
  display: flex;
  align-items: center;
  gap: 12px;
}

.avatar-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--card-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.05rem;
  box-shadow: 0 4px 10px rgba(59, 59, 59, 0.06);
}

/* FAQ Accordion */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--card-white);
  border-radius: 24px;
  padding: 6px 24px;
  box-shadow: var(--shadow-soft);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.faq-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.08rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 44px;
}

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

.faq-item summary::after {
  content: "+";
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--card-peach);
  color: var(--coral);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  content: "−";
  background: var(--coral);
  color: #FFFFFF;
}

.faq-answer {
  padding: 0 0 20px;
  color: var(--ink-muted);
  font-size: 0.96rem;
  border-top: 1px dashed #EFE5DA;
  padding-top: 14px;
}

/* Footer */
.site-footer {
  padding: 36px 0 44px;
  margin-top: 28px;
}

.footer-capsule {
  background: var(--card-white);
  border-radius: 28px;
  padding: 26px 32px;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: var(--bg-cream);
  font-weight: 700;
  font-size: 0.94rem;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.footer-links a:hover {
  background: var(--card-peach);
  color: var(--coral-hover);
}

.copyright {
  font-size: 0.9rem;
  color: var(--ink-muted);
  font-weight: 600;
}

/* Subpages & Articles */
.page-hero {
  padding: 34px 0 20px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ink-muted);
  margin-bottom: 16px;
}

.breadcrumb a {
  color: var(--coral);
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.article-container {
  max-width: 880px;
  margin: 0 auto 48px;
  padding: 0 20px;
}

.article-paper {
  background: var(--card-white);
  border-radius: 28px;
  padding: 40px 42px;
  box-shadow: var(--shadow-soft);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 14px 0 24px;
  font-size: 0.9rem;
  color: var(--ink-muted);
  font-weight: 700;
}

.article-paper h1 {
  font-size: clamp(1.65rem, 3.2vw, 2.2rem);
  margin-bottom: 12px;
}

.article-paper h2 {
  font-size: 1.42rem;
  margin-top: 32px;
  margin-bottom: 14px;
  padding-left: 14px;
  border-left: 5px solid var(--coral);
}

.article-paper h3 {
  font-size: 1.18rem;
  margin-top: 22px;
  margin-bottom: 10px;
}

.article-paper p {
  margin: 0 0 16px;
  color: #444444;
  font-size: 1.02rem;
  line-height: 1.85;
}

.article-paper ul, .article-paper ol {
  margin: 0 0 18px;
  padding-left: 22px;
  color: #444444;
  line-height: 1.85;
}

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

.callout-box {
  background: var(--card-mint);
  border-radius: 22px;
  padding: 20px 24px;
  margin: 22px 0;
}

.callout-box.peach {
  background: var(--card-peach);
}

.callout-box.sky {
  background: var(--card-sky);
}

.callout-box.lemon {
  background: var(--card-lemon);
}

.table-wrap {
  overflow-x: auto;
  margin: 20px 0;
  border-radius: 20px;
  border: 2px solid #F3EAE0;
}

table.bento-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-white);
  font-size: 0.95rem;
}

table.bento-table th,
table.bento-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid #F3EAE0;
}

table.bento-table th {
  background: var(--card-peach);
  font-family: var(--font-heading);
  font-weight: 700;
}

table.bento-table tr:last-child td {
  border-bottom: none;
}

.inline-link {
  color: var(--coral-hover);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Network Self-Check Controls */
.selector-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 20px 0;
}

.net-option {
  min-height: 52px;
  padding: 12px 16px;
  border-radius: 20px;
  border: 2px solid #EFE4D6;
  background: var(--bg-cream);
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 0.96rem;
  color: var(--ink);
  cursor: pointer;
  transition: all 0.2s ease;
}

.net-option:hover,
.net-option.active {
  background: var(--coral);
  color: #FFFFFF;
  border-color: var(--coral);
  transform: translateY(-2px);
}

.check-result-box {
  background: var(--card-sky);
  border-radius: 24px;
  padding: 24px;
  margin-top: 18px;
}

/* Responsive Media Queries */
@media (max-width: 980px) {
  .hero-bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-main-card {
    grid-column: span 2;
  }
  .mini-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .selector-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .nav-capsule {
    flex-wrap: wrap;
  }
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    padding-top: 12px;
    gap: 6px;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links a {
    justify-content: center;
  }
}

@media (max-width: 640px) {
  .hero-bento-grid,
  .mini-grid,
  .grid-3,
  .grid-2,
  .selector-grid {
    grid-template-columns: 1fr;
  }
  .hero-main-card {
    grid-column: span 1;
    padding: 28px 22px;
  }
  .bento-card {
    padding: 22px;
  }
  .article-paper {
    padding: 24px 20px;
  }
  .btn {
    width: 100%;
  }
  .footer-capsule {
    flex-direction: column;
    align-items: flex-start;
  }
}