/* ==========================================================================
   XFLTD (养鸡场) - 温暖乡村粗野主义 (Warm Country Brutalism)
   Pure Flat Colors: No Gradients, No Box-Shadows.
   Palette:
     Primary (赤陶红): #E8503A
     Background (奶油白): #F2EAD8
     Text/Lines (炭黑): #241C15
     Secondary (黏土棕): #7A3B2E
     Accent (蛋黄黄): #F0B429
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Alfa+Slab+One&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --color-primary: #E8503A;
  --color-bg: #F2EAD8;
  --color-text: #241C15;
  --color-secondary: #7A3B2E;
  --color-accent: #F0B429;
  --color-white: #FFFFFF;
  --border-width: 2px;
  --border-charcoal: 2px solid var(--color-text);
  --font-heading: 'Alfa Slab One', 'Arial Black', Impact, serif;
  --font-body: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  border-left: var(--border-charcoal);
  border-right: var(--border-charcoal);
  max-width: 1360px;
  margin: 0 auto;
}

/* Typography */
h1, h2, h3, h4, .brand-stamp {
  font-family: var(--font-heading);
  letter-spacing: 0.5px;
  font-weight: 400;
  line-height: 1.15;
  color: var(--color-text);
}

p, li, input, button, table {
  font-family: var(--font-body);
}

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

/* Common Layout Components */
.container {
  width: 100%;
  padding-left: 32px;
  padding-right: 32px;
}

.section-divider {
  border-top: var(--border-charcoal);
}

/* Buttons (Strictly flat, 2px charcoal border) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.05rem;
  padding: 14px 28px;
  border: var(--border-charcoal);
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: background-color 0.15s ease, color 0.15s ease;
  min-height: 52px;
  text-align: center;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-bg);
}

.btn-primary:hover {
  background-color: var(--color-secondary);
  color: var(--color-bg);
}

.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-text);
}

.btn-accent:hover {
  background-color: var(--color-primary);
  color: var(--color-bg);
}

.btn-outline {
  background-color: var(--color-bg);
  color: var(--color-text);
}

.btn-outline:hover {
  background-color: var(--color-text);
  color: var(--color-bg);
}

/* Header & Sticky Navbar */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-bg);
  border-bottom: var(--border-charcoal);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 32px;
  gap: 20px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 14px;
}

.stamp-box {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-bg);
  border: 3px double var(--color-text);
  padding: 3px;
}

.stamp-box svg {
  width: 100%;
  height: 100%;
  display: block;
}

.brand-text-wrap {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  line-height: 1;
  color: var(--color-text);
}

.brand-subtitle {
  font-size: 0.7rem;
  letter-spacing: 3px;
  font-weight: 700;
  color: var(--color-secondary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-item a {
  font-weight: 700;
  font-size: 0.95rem;
  padding: 6px 10px;
  border: 2px solid transparent;
}

.nav-item a:hover {
  border: var(--border-charcoal);
  background-color: var(--color-accent);
}

.nav-badge-pill {
  background-color: var(--color-primary);
  color: var(--color-bg);
  padding: 2px 8px;
  font-size: 0.75rem;
  font-weight: 700;
  margin-left: 4px;
}

/* Hero Section */
.hero-section {
  padding: 60px 32px 50px 32px;
  background-color: var(--color-bg);
  border-bottom: var(--border-charcoal);
}

.hero-meta-tag {
  display: inline-block;
  background-color: var(--color-text);
  color: var(--color-bg);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 2px;
  padding: 6px 14px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.5rem, 5.5vw, 4.8rem);
  line-height: 1.05;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: 24px;
}

.hero-title .highlight-red {
  color: var(--color-primary);
  background-color: transparent;
}

.hero-lead {
  font-size: 1.25rem;
  font-weight: 500;
  max-width: 820px;
  color: var(--color-text);
  line-height: 1.65;
  margin-bottom: 36px;
  border-left: 6px solid var(--color-primary);
  padding-left: 20px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 30px;
}

.hero-trust-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  padding-top: 24px;
  border-top: var(--border-charcoal);
  font-size: 0.9rem;
  font-weight: 600;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.trust-dot {
  width: 10px;
  height: 10px;
  background-color: var(--color-primary);
  display: inline-block;
}

/* Marquee Tape (Pure Flat Color Banner) */
.marquee-band {
  background-color: var(--color-accent);
  color: var(--color-text);
  border-bottom: var(--border-charcoal);
  overflow: hidden;
  white-space: nowrap;
  padding: 12px 0;
  display: flex;
}

.marquee-content {
  display: inline-flex;
  animation: marquee 25s linear infinite;
  font-family: var(--font-heading);
  font-size: 1.15rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.marquee-item {
  padding: 0 20px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.marquee-star {
  color: var(--color-primary);
}

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

/* Section Header */
.section-header-block {
  padding: 48px 32px 32px 32px;
  background-color: var(--color-bg);
  border-bottom: var(--border-charcoal);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 20px;
}

.section-header-block .section-index {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--color-secondary);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-header-block .section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
}

.section-header-block .section-subtitle {
  max-width: 500px;
  font-size: 1rem;
  color: var(--color-text);
}

/* 3 Core Advantage Cards (Pure flat grid) */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: var(--border-charcoal);
}

.advantage-card {
  padding: 40px 32px;
  border-right: var(--border-charcoal);
  background-color: var(--color-bg);
  display: flex;
  flex-direction: column;
}

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

.advantage-card:nth-child(2) {
  background-color: #EDE3CD;
}

.card-num {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: 8px;
  display: inline-block;
  width: fit-content;
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: 16px;
  line-height: 1.25;
}

.card-desc {
  font-size: 1rem;
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: 20px;
}

.card-tag {
  margin-top: auto;
  align-self: flex-start;
  padding: 4px 10px;
  background-color: var(--color-text);
  color: var(--color-bg);
  font-size: 0.8rem;
  font-weight: 700;
}

/* Streaming & AI Cards */
.media-ai-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: var(--border-charcoal);
}

.media-ai-card {
  padding: 44px 32px;
  border-right: var(--border-charcoal);
  background-color: var(--color-bg);
}

.media-ai-card:last-child {
  border-right: none;
  background-color: #EDE3CD;
}

.media-badge {
  display: inline-block;
  background-color: var(--color-primary);
  color: var(--color-bg);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 4px 12px;
  margin-bottom: 16px;
}

.media-ai-card h3 {
  font-size: 1.6rem;
  margin-bottom: 16px;
}

.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.tech-pill {
  border: var(--border-charcoal);
  background-color: var(--color-bg);
  padding: 8px 14px;
  font-weight: 700;
  font-size: 0.9rem;
}

.tech-pill.accent {
  background-color: var(--color-accent);
}

/* Farm Store Line-Item Pricing Table (以文字行呈现的农场商店清单) */
.pricing-section {
  border-bottom: var(--border-charcoal);
  background-color: var(--color-bg);
}

.pricing-table-wrap {
  width: 100%;
  overflow-x: auto;
}

.farm-store-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.farm-store-table th {
  background-color: var(--color-text);
  color: var(--color-bg);
  font-family: var(--font-heading);
  font-size: 1rem;
  padding: 16px 24px;
  letter-spacing: 1px;
  border: none;
}

.farm-store-table td {
  padding: 22px 24px;
  border-bottom: var(--border-charcoal);
  vertical-align: middle;
  font-size: 1rem;
}

.farm-store-table tr:hover {
  background-color: #E6DCBE;
}

.farm-store-table tr.featured-row {
  background-color: #F8EFE0;
}

.plan-name-wrap {
  display: flex;
  flex-direction: column;
}

.plan-name {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  color: var(--color-text);
}

.plan-tag {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 4px;
}

.price-figure {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: var(--color-primary);
}

.price-cycle {
  font-size: 0.85rem;
  color: var(--color-secondary);
  font-weight: 600;
}

/* Big Quote Manifesto (含一句大引语的农场故事) */
.manifesto-section {
  padding: 70px 32px;
  background-color: var(--color-primary);
  color: var(--color-bg);
  border-bottom: var(--border-charcoal);
  text-align: center;
}

.manifesto-tag {
  font-size: 0.9rem;
  letter-spacing: 3px;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 20px;
  display: inline-block;
  background-color: var(--color-text);
  color: var(--color-bg);
  padding: 4px 14px;
}

.big-quote {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4.2vw, 3.6rem);
  line-height: 1.2;
  max-width: 980px;
  margin: 0 auto 30px auto;
  text-transform: uppercase;
}

.manifesto-story {
  max-width: 760px;
  margin: 0 auto;
  font-size: 1.15rem;
  line-height: 1.8;
  font-weight: 400;
  color: #FCEFD9;
}

/* Testimonials / User Reviews (用户评价) */
.reviews-section {
  border-bottom: var(--border-charcoal);
  background-color: var(--color-bg);
}

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

.review-card {
  padding: 36px 28px;
  border-right: var(--border-charcoal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

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

.review-stars {
  color: var(--color-accent);
  font-size: 1.2rem;
  margin-bottom: 14px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 1rem;
  line-height: 1.65;
  margin-bottom: 24px;
  font-style: italic;
}

.reviewer-meta {
  border-top: var(--border-charcoal);
  padding-top: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.reviewer-name {
  font-weight: 700;
  font-size: 0.95rem;
}

.reviewer-role {
  font-size: 0.8rem;
  color: var(--color-secondary);
}

/* FAQ (常见问题解答) */
.faq-section {
  border-bottom: var(--border-charcoal);
  background-color: var(--color-bg);
}

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

.faq-item {
  border-bottom: var(--border-charcoal);
  padding: 30px 32px;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--color-text);
}

.faq-q-badge {
  background-color: var(--color-primary);
  color: var(--color-bg);
  padding: 2px 8px;
  font-size: 0.9rem;
  line-height: 1.2;
}

.faq-answer {
  padding-left: 36px;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
}

/* Footer (仅保留4个标题，重复印章图形，在新页面打开) */
.site-footer {
  background-color: var(--color-bg);
  padding: 50px 32px 30px 32px;
  text-align: center;
}

.footer-stamp-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.footer-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 28px;
  margin-bottom: 36px;
  list-style: none;
}

.footer-nav-link {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  padding: 8px 18px;
  border: var(--border-charcoal);
  background-color: var(--color-bg);
  transition: all 0.15s ease;
  display: inline-block;
}

.footer-nav-link:hover {
  background-color: var(--color-primary);
  color: var(--color-bg);
}

.footer-bottom-copy {
  border-top: var(--border-charcoal);
  padding-top: 24px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-secondary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

/* Article & Content Subpage Styling */
.article-header {
  padding: 50px 32px 30px 32px;
  border-bottom: var(--border-charcoal);
  background-color: #EDE3CD;
}

.article-body {
  padding: 40px 32px 60px 32px;
  max-width: 960px;
  margin: 0 auto;
}

.article-body h2 {
  font-size: 1.8rem;
  margin: 36px 0 16px 0;
  border-bottom: var(--border-charcoal);
  padding-bottom: 8px;
}

.article-body h3 {
  font-size: 1.35rem;
  margin: 24px 0 12px 0;
}

.article-body p {
  margin-bottom: 18px;
  line-height: 1.8;
  font-size: 1.05rem;
}

.article-body ul, .article-body ol {
  margin-left: 24px;
  margin-bottom: 20px;
  line-height: 1.8;
}

.article-body blockquote {
  border-left: 6px solid var(--color-primary);
  padding: 16px 24px;
  background-color: #E6DCBE;
  margin: 24px 0;
  font-weight: 500;
}

.article-callout {
  border: var(--border-charcoal);
  background-color: var(--color-bg);
  padding: 24px;
  margin: 28px 0;
}

.article-callout a {
  color: var(--color-primary);
  font-weight: 700;
  text-decoration: underline;
}

.article-grid {
  display: grid;
  grid-template-columns: 1fr;
  border-bottom: var(--border-charcoal);
}

.article-list-item {
  padding: 32px;
  border-bottom: var(--border-charcoal);
  background-color: var(--color-bg);
}

.article-list-item:nth-child(even) {
  background-color: #EDE3CD;
}

.article-list-item:last-child {
  border-bottom: none;
}

.article-meta {
  font-size: 0.85rem;
  color: var(--color-secondary);
  font-weight: 700;
  margin-bottom: 8px;
}

.article-link-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  color: var(--color-text);
  margin-bottom: 12px;
  display: block;
}

.article-link-title:hover {
  color: var(--color-primary);
}

/* ==========================================================================
   Responsive Adaptations (@media Queries)
   Ensure mobile single-column display & finger-friendly button sizing
   ========================================================================== */
@media (max-width: 992px) {
  .advantages-grid {
    grid-template-columns: 1fr;
  }
  .advantage-card {
    border-right: none;
    border-bottom: var(--border-charcoal);
  }
  .advantage-card:last-child {
    border-bottom: none;
  }
  .media-ai-section {
    grid-template-columns: 1fr;
  }
  .media-ai-card {
    border-right: none;
    border-bottom: var(--border-charcoal);
  }
  .media-ai-card:last-child {
    border-bottom: none;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .review-card {
    border-right: none;
    border-bottom: var(--border-charcoal);
  }
  .review-card:last-child {
    border-bottom: none;
  }
}

@media (max-width: 768px) {
  body {
    border-left: none;
    border-right: none;
  }
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }
  .navbar {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 20px;
    gap: 16px;
  }
  .nav-links {
    width: 100%;
    flex-wrap: wrap;
    gap: 10px;
  }
  .hero-section {
    padding: 36px 20px;
  }
  .hero-title {
    font-size: 2.3rem;
  }
  .hero-lead {
    font-size: 1.05rem;
    padding-left: 14px;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
    min-height: 54px; /* Finger-friendly touch target */
  }
  .section-header-block {
    padding: 32px 20px;
  }
  .advantage-card, .media-ai-card, .faq-item, .article-list-item {
    padding: 28px 20px;
  }
  .manifesto-section {
    padding: 50px 20px;
  }
  .big-quote {
    font-size: 1.8rem;
  }
  .farm-store-table th, .farm-store-table td {
    padding: 16px 14px;
    font-size: 0.9rem;
  }
  .price-figure {
    font-size: 1.4rem;
  }
  .footer-nav {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }
  .footer-nav-link {
    width: 100%;
    text-align: center;
  }
}