/* ==========================================================================
   老猫云 LAOMAO CLOUD - SWISS INTERNATIONAL TYPOGRAPHIC STYLE
   Design System: Pure Ink (#000000), Rice Paper (#F5F2EC), International Orange (#FF4B00)
   Strict Rules: 0 Border Radius, 0 Box Shadows, 0 Gradients, 2px Solid Borders
   ========================================================================== */

:root {
  --bg-paper: #F5F2EC;
  --ink-black: #000000;
  --accent-orange: #FF4B00;
  --line-width: 2px;
  --font-display: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: 0 !important;
  box-shadow: none !important;
  text-shadow: none !important;
}

html {
  font-size: 16px;
  background-color: var(--bg-paper);
  color: var(--ink-black);
  font-family: var(--font-display);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-paper);
  color: var(--ink-black);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  border-left: var(--line-width) solid var(--ink-black);
  border-right: var(--line-width) solid var(--ink-black);
  max-width: 1440px;
  margin: 0 auto;
}

/* Micro-label style */
.micro-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--ink-black);
  padding: 2px 8px;
  border: 1px solid var(--ink-black);
  background: transparent;
  line-height: 1.2;
}

.micro-label.orange {
  background: var(--accent-orange);
  color: #FFFFFF;
  border-color: var(--accent-orange);
}

/* Base Typographic Stroke Effect */
.stroke-text {
  color: transparent;
  -webkit-text-stroke: 2px var(--ink-black);
  font-weight: 900;
}

/* Solid & Stroke Dual Headline */
.mega-title {
  font-size: clamp(3.5rem, 8.5vw, 7.75rem); /* Scaled for 124px on desktop */
  line-height: 0.92;
  font-weight: 900;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  word-break: break-word;
}

/* Buttons */
.btn-swiss {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  background: var(--ink-black);
  color: #FFFFFF;
  border: var(--line-width) solid var(--ink-black);
  padding: 16px 32px;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn-swiss:hover, .btn-swiss:focus {
  background: var(--accent-orange);
  border-color: var(--accent-orange);
  color: #FFFFFF;
}

.btn-swiss-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  background: transparent;
  color: var(--ink-black);
  border: var(--line-width) solid var(--ink-black);
  padding: 16px 32px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-swiss-outline:hover, .btn-swiss-outline:focus {
  background: var(--ink-black);
  color: #FFFFFF;
}

/* ==========================================================================
   Header & Nav
   ========================================================================== */
.site-header {
  border-bottom: var(--line-width) solid var(--ink-black);
  position: sticky;
  top: 0;
  background-color: var(--bg-paper);
  z-index: 100;
}

.header-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 24px;
  border-bottom: 1px solid var(--ink-black);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  background: #EFECE5;
}

.header-main {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: stretch;
}

.brand-container {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 28px;
  border-right: var(--line-width) solid var(--ink-black);
  text-decoration: none;
  color: var(--ink-black);
}

.brand-name {
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1;
}

.brand-sub {
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--accent-orange);
  margin-top: 3px;
}

/* Geometric Cat Logo: Circle & Triangles */
.cat-logo-svg {
  width: 38px;
  height: 38px;
  display: block;
}

.nav-menu {
  display: flex;
  list-style: none;
  align-items: stretch;
}

.nav-item {
  display: flex;
  border-right: 1px solid var(--ink-black);
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 0 22px;
  text-decoration: none;
  color: var(--ink-black);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.nav-link:hover {
  background-color: var(--ink-black);
  color: #FFFFFF;
}

.nav-link.highlight {
  background-color: #E6E1D6;
  color: var(--accent-orange);
  font-weight: 900;
}

.nav-link.highlight:hover {
  background-color: var(--accent-orange);
  color: #FFFFFF;
}

.header-cta {
  display: flex;
  align-items: center;
  padding: 10px 24px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  border-bottom: var(--line-width) solid var(--ink-black);
  display: grid;
  grid-template-columns: 7fr 5fr;
  min-height: 580px;
}

.hero-content {
  padding: 48px;
  border-right: var(--line-width) solid var(--ink-black);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.hero-headline {
  margin-bottom: 28px;
}

.hero-headline .line-1 {
  display: block;
}

.hero-headline .line-2 {
  display: block;
  color: var(--accent-orange);
}

.hero-intro {
  font-size: 1.25rem;
  line-height: 1.65;
  font-weight: 500;
  max-width: 640px;
  margin-bottom: 36px;
  color: #222222;
}

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

.hero-guarantee {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  font-family: var(--font-mono);
  margin-top: 12px;
  color: #444;
}

.hero-sidebar {
  display: grid;
  grid-template-rows: auto 1fr auto;
  background-color: #EDE8DE;
}

.sidebar-block {
  padding: 28px;
  border-bottom: var(--line-width) solid var(--ink-black);
}

.sidebar-block:last-child {
  border-bottom: none;
}

.metric-number {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--ink-black);
}

.metric-label {
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-top: 6px;
}

.status-ticker {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.8;
  padding: 24px;
}

.status-item {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed var(--ink-black);
  padding: 6px 0;
}

.status-live {
  color: var(--accent-orange);
  font-weight: bold;
}

/* ==========================================================================
   Section Headers (Swiss Grid Strip)
   ========================================================================== */
.section-banner {
  border-bottom: var(--line-width) solid var(--ink-black);
  padding: 20px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #EAE5DC;
}

.section-banner h2 {
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

/* ==========================================================================
   Core Advantages (01 / 02 / 03 Strict Grid + Vertical Lines)
   ========================================================================== */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: var(--line-width) solid var(--ink-black);
}

.adv-card {
  padding: 44px 36px;
  border-right: var(--line-width) solid var(--ink-black);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background-color: var(--bg-paper);
  position: relative;
}

.adv-card:last-child {
  border-right: none;
}

.adv-num {
  font-size: 4.5rem;
  font-weight: 900;
  line-height: 0.85;
  letter-spacing: -0.05em;
  margin-bottom: 24px;
  color: var(--ink-black);
}

.adv-card:hover .adv-num {
  color: var(--accent-orange);
}

.adv-title {
  font-size: 1.5rem;
  font-weight: 900;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.adv-desc {
  font-size: 1rem;
  line-height: 1.65;
  color: #333333;
  margin-bottom: 28px;
}

.adv-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

/* ==========================================================================
   Streaming & AI Support Matrix
   ========================================================================== */
.streaming-ai-section {
  border-bottom: var(--line-width) solid var(--ink-black);
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.stream-col {
  padding: 44px;
  border-right: var(--line-width) solid var(--ink-black);
}

.ai-col {
  padding: 44px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.service-card {
  border: var(--line-width) solid var(--ink-black);
  padding: 20px;
  background: #FFF;
  transition: transform 0.1s ease;
}

.service-card:hover {
  background: var(--ink-black);
  color: #FFF;
}

.service-card:hover .service-badge {
  background: var(--accent-orange);
  color: #FFF;
  border-color: var(--accent-orange);
}

.service-name {
  font-size: 1.2rem;
  font-weight: 900;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.service-badge {
  font-size: 0.68rem;
  font-family: var(--font-mono);
  font-weight: 700;
  padding: 2px 6px;
  border: 1px solid var(--ink-black);
  background: #F0EDE6;
}

.service-param {
  font-size: 0.85rem;
  color: inherit;
  opacity: 0.85;
}

/* ==========================================================================
   Pricing Table
   ========================================================================== */
.pricing-section {
  border-bottom: var(--line-width) solid var(--ink-black);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.price-card {
  padding: 36px 28px;
  border-right: var(--line-width) solid var(--ink-black);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--bg-paper);
  position: relative;
}

.price-card:last-child {
  border-right: none;
}

.price-card.featured {
  background: #EDE7DC;
  border-top: 6px solid var(--accent-orange);
}

.price-tier-header {
  border-bottom: 1px solid var(--ink-black);
  padding-bottom: 18px;
  margin-bottom: 20px;
}

.price-plan-name {
  font-size: 1.4rem;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.price-plan-tagline {
  font-size: 0.85rem;
  color: #555555;
  margin-top: 4px;
}

.price-figure {
  margin: 16px 0 24px 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.price-currency {
  font-size: 1.4rem;
  font-weight: 900;
}

.price-num {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--ink-black);
}

.price-period {
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: #666;
}

.price-features {
  list-style: none;
  margin-bottom: 32px;
  font-size: 0.92rem;
  line-height: 1.9;
}

.price-features li {
  position: relative;
  padding-left: 20px;
}

.price-features li::before {
  content: "■";
  position: absolute;
  left: 0;
  font-size: 0.65rem;
  color: var(--accent-orange);
}

/* ==========================================================================
   User Reviews (Testimonials)
   ========================================================================== */
.reviews-section {
  border-bottom: var(--line-width) solid var(--ink-black);
}

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

.review-card {
  padding: 36px 30px;
  border-right: var(--line-width) solid var(--ink-black);
  background-color: var(--bg-paper);
}

.review-card:last-child {
  border-right: none;
}

.review-stars {
  color: var(--accent-orange);
  letter-spacing: 2px;
  font-size: 1.1rem;
  margin-bottom: 14px;
}

.review-quote {
  font-size: 1.05rem;
  line-height: 1.6;
  font-weight: 500;
  margin-bottom: 20px;
  color: #111;
}

.review-meta {
  font-size: 0.82rem;
  font-family: var(--font-mono);
  color: #555;
  border-top: 1px dashed var(--ink-black);
  padding-top: 12px;
}

.review-user {
  font-weight: 800;
  color: var(--ink-black);
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */
.faq-section {
  border-bottom: var(--line-width) solid var(--ink-black);
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.faq-item {
  padding: 36px;
  border-right: var(--line-width) solid var(--ink-black);
  border-bottom: var(--line-width) solid var(--ink-black);
}

.faq-item:nth-child(2n) {
  border-right: none;
}

.faq-item:nth-last-child(-n+2) {
  border-bottom: none;
}

.faq-q {
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.faq-q-num {
  font-family: var(--font-mono);
  color: var(--accent-orange);
  font-size: 1rem;
}

.faq-a {
  font-size: 0.98rem;
  line-height: 1.7;
  color: #333333;
}

/* ==========================================================================
   Footer (Strictly 4 Links Only)
   ========================================================================== */
.site-footer {
  background-color: var(--bg-paper);
}

.footer-manifesto {
  padding: 48px;
  border-bottom: var(--line-width) solid var(--ink-black);
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 32px;
  align-items: center;
}

.footer-nav-bar {
  border-bottom: var(--line-width) solid var(--ink-black);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background-color: #E8E3D8;
}

.footer-nav-link {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  font-size: 1.05rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  color: var(--ink-black);
  border-right: var(--line-width) solid var(--ink-black);
  transition: all 0.15s ease;
}

.footer-nav-link:last-child {
  border-right: none;
}

.footer-nav-link:hover {
  background-color: var(--accent-orange);
  color: #FFFFFF;
}

.footer-bottom {
  padding: 24px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #666;
}

/* ==========================================================================
   Content Pages (Articles, About, Terms, Privacy, Sitemap)
   ========================================================================== */
.page-container {
  padding: 64px 48px;
  max-width: 1040px;
  margin: 0 auto;
}

.page-header-strip {
  border-bottom: var(--line-width) solid var(--ink-black);
  padding: 40px 48px 30px;
  background-color: #EBE6DC;
}

.page-headline {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-top: 16px;
  margin-bottom: 12px;
}

.article-body {
  font-size: 1.12rem;
  line-height: 1.85;
  color: #1a1a1a;
}

.article-body p {
  margin-bottom: 24px;
}

.article-body h2 {
  font-size: 1.85rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin: 48px 0 20px 0;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ink-black);
}

.article-body h3 {
  font-size: 1.35rem;
  font-weight: 800;
  margin: 32px 0 16px 0;
}

.article-body ul, .article-body ol {
  margin-bottom: 24px;
  padding-left: 28px;
}

.article-body li {
  margin-bottom: 10px;
}

.article-body blockquote {
  border-left: 4px solid var(--accent-orange);
  padding: 16px 24px;
  background: #EDE7DC;
  font-style: normal;
  font-weight: 500;
  margin: 28px 0;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  border: 2px solid var(--ink-black);
}

.article-body th, .article-body td {
  border: 1px solid var(--ink-black);
  padding: 12px 16px;
  text-align: left;
}

.article-body th {
  background: #E0DBD0;
  font-weight: 900;
}

.article-body tr:nth-child(even) {
  background: #FAF8F5;
}

.article-cta-box {
  border: 2px solid var(--ink-black);
  background: #EDE6DC;
  padding: 36px;
  margin: 48px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.article-card-item {
  border: 2px solid var(--ink-black);
  padding: 32px;
  margin-bottom: 24px;
  background: #FFFFFF;
  transition: all 0.15s ease;
  text-decoration: none;
  color: var(--ink-black);
  display: block;
}

.article-card-item:hover {
  background: #FFF9F5;
  border-color: var(--accent-orange);
}

/* ==========================================================================
   Responsive Queries (@media)
   Strict Mobile Single Column & Finger Friendly
   ========================================================================== */
@media screen and (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .price-card:nth-child(2) {
    border-right: none;
  }
  .price-card:nth-child(-n+2) {
    border-bottom: var(--line-width) solid var(--ink-black);
  }
  .advantages-grid {
    grid-template-columns: 1fr;
  }
  .adv-card {
    border-right: none;
    border-bottom: var(--line-width) solid var(--ink-black);
  }
  .adv-card:last-child {
    border-bottom: none;
  }
  .streaming-ai-section {
    grid-template-columns: 1fr;
  }
  .stream-col {
    border-right: none;
    border-bottom: var(--line-width) solid var(--ink-black);
  }
}

@media screen and (max-width: 768px) {
  body {
    border-left: none;
    border-right: none;
  }
  .header-topbar {
    display: none;
  }
  .header-main {
    grid-template-columns: 1fr;
  }
  .brand-container {
    border-right: none;
    border-bottom: 1px solid var(--ink-black);
    justify-content: space-between;
    padding: 14px 20px;
  }
  .nav-menu {
    flex-wrap: wrap;
    border-bottom: var(--line-width) solid var(--ink-black);
  }
  .nav-item {
    flex: 1 1 33.333%;
    border-bottom: 1px solid var(--ink-black);
  }
  .nav-link {
    padding: 12px 10px;
    font-size: 0.85rem;
    justify-content: center;
    text-align: center;
  }
  .header-cta {
    display: none;
  }
  .hero-section {
    grid-template-columns: 1fr;
  }
  .hero-content {
    padding: 32px 20px;
    border-right: none;
    border-bottom: var(--line-width) solid var(--ink-black);
  }
  .hero-sidebar {
    grid-template-columns: 1fr;
  }
  .mega-title {
    font-size: 3.2rem;
  }
  .stroke-text {
    -webkit-text-stroke: 1.5px var(--ink-black);
  }
  .section-banner {
    padding: 16px 20px;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .section-banner h2 {
    font-size: 1.4rem;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .price-card {
    border-right: none;
    border-bottom: var(--line-width) solid var(--ink-black);
    padding: 28px 20px;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .review-card {
    border-right: none;
    border-bottom: var(--line-width) solid var(--ink-black);
    padding: 28px 20px;
  }
  .faq-grid {
    grid-template-columns: 1fr;
  }
  .faq-item {
    border-right: none;
    border-bottom: var(--line-width) solid var(--ink-black);
    padding: 24px 20px;
  }
  .footer-manifesto {
    grid-template-columns: 1fr;
    padding: 32px 20px;
  }
  .footer-nav-bar {
    grid-template-columns: 1fr 1fr;
  }
  .footer-nav-link {
    padding: 20px 12px;
    font-size: 0.95rem;
  }
  .footer-nav-link:nth-child(odd) {
    border-right: var(--line-width) solid var(--ink-black);
  }
  .footer-nav-link:nth-child(even) {
    border-right: none;
  }
  .footer-nav-link:nth-child(-n+2) {
    border-bottom: var(--line-width) solid var(--ink-black);
  }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    padding: 20px;
    text-align: center;
  }
  .page-container {
    padding: 36px 20px;
  }
  .page-header-strip {
    padding: 28px 20px 20px;
  }
  .article-cta-box {
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 20px;
  }
  .btn-swiss, .btn-swiss-outline {
    width: 100%;
    padding: 16px 20px;
  }
}