/* ==========================================================================
   三月七官网 Landing Page - Design System & Modern UI
   Domain: sanyueqi.cyou
   ========================================================================== */

:root {
  --bg-dark: #0b0f19;
  --bg-card: rgba(18, 24, 38, 0.75);
  --bg-card-hover: rgba(28, 36, 56, 0.85);
  --accent-cyan: #2dd4bf;
  --accent-cyan-hover: #14b8a6;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  --border-color: rgba(255, 255, 255, 0.1);
  --border-glow: rgba(45, 212, 191, 0.3);
  --shadow-glow: 0 0 25px rgba(45, 212, 191, 0.15);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  background: #0b0f19;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(11, 15, 25, 0.75);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.5px;
}

.brand-logo img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  box-shadow: 0 0 15px rgba(45, 212, 191, 0.4);
  object-fit: cover;
}

.brand-title {
  background: linear-gradient(135deg, #ffffff 0%, #2dd4bf 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--accent-cyan);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #2dd4bf 0%, #0d9488 100%);
  color: #042f2e;
  box-shadow: 0 4px 20px rgba(45, 212, 191, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(45, 212, 191, 0.45);
  background: linear-gradient(135deg, #34d399 0%, #14b8a6 100%);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--text-main);
}

.btn-outline:hover {
  border-color: var(--accent-cyan);
  background: rgba(45, 212, 191, 0.1);
  color: var(--accent-cyan);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1.05rem;
}

/* Mobile menu button */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ==========================================================================
   Hero Section with Atmospheric Mountain & Wave Separator
   ========================================================================== */
.hero-section {
  position: relative;
  padding-top: 150px;
  padding-bottom: 120px;
  /* Dark atmospheric mountain peak backdrop styling */
  background: 
    radial-gradient(circle at 50% 20%, rgba(45, 212, 191, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 0%, rgba(59, 130, 246, 0.15) 0%, transparent 40%),
    linear-gradient(180deg, rgba(11, 15, 25, 0.4) 0%, #0b0f19 100%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 600' preserveAspectRatio='none'%3E%3Cpath fill='%23111827' fill-opacity='0.6' d='M0,320L60,304C120,288,240,256,360,266.7C480,277,600,331,720,341.3C840,352,960,320,1080,288C1200,256,1320,224,1380,208L1440,192L1440,0L1380,0C1320,0,1200,0,1080,0C960,0,840,0,720,0C600,0,480,0,360,0C240,0,120,0,60,0L0,0Z'%3E%3C/path%3E%3C/svg%3E") no-repeat center top;
  background-size: cover;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 30px;
  background: rgba(45, 212, 191, 0.1);
  border: 1px solid rgba(45, 212, 191, 0.3);
  color: var(--accent-cyan);
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-badge .pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(45, 212, 191, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(45, 212, 191, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(45, 212, 191, 0); }
}

.hero-title {
  font-size: 3rem;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 20px;
}

.hero-title span.gradient-text {
  background: linear-gradient(135deg, #2dd4bf 0%, #60a5fa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  line-height: 1.7;
}

/* Hero Download Button Hub */
.hero-download-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.download-card-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.download-card-btn:hover {
  background: rgba(45, 212, 191, 0.12);
  border-color: var(--accent-cyan);
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(45, 212, 191, 0.15);
}

.download-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(45, 212, 191, 0.15);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.download-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

.download-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Hero Card Preview Widget */
.hero-widget-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  position: relative;
  backdrop-filter: blur(20px);
}

.widget-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 20px;
}

.node-status-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.node-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.node-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
}

.node-flag {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 0.92rem;
}

.ping-tag {
  font-size: 0.82rem;
  font-weight: 700;
  color: #34d399;
  background: rgba(52, 211, 153, 0.1);
  padding: 4px 10px;
  border-radius: 20px;
}

/* Curved Wave Bottom Separator */
.wave-divider {
  position: relative;
  width: 100%;
  overflow: hidden;
  line-height: 0;
}

.wave-divider svg {
  position: relative;
  display: block;
  width: calc(100% + 1.3px);
  height: 60px;
}

/* ==========================================================================
   Features Section
   ========================================================================== */
.section {
  padding: 100px 0;
}

.section-title-wrap {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-tag {
  color: var(--accent-cyan);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}

.feature-icon-box {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(45, 212, 191, 0.12);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 24px;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ==========================================================================
   Pricing Section (套餐与价格)
   ========================================================================== */
.pricing-section {
  background: rgba(15, 21, 35, 0.6);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 28px;
  align-items: stretch;
}

.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
}

.price-card.popular {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 30px rgba(45, 212, 191, 0.2);
  background: rgba(22, 32, 50, 0.85);
}

.popular-badge {
  position: absolute;
  top: -14px;
  right: 24px;
  background: linear-gradient(135deg, #2dd4bf 0%, #0d9488 100%);
  color: #042f2e;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
}

.price-header h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.price-header p {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-bottom: 24px;
}

.price-amount {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

.currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.value {
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: -1px;
}

.period {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.price-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
  flex-grow: 1;
}

.price-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.price-features li.active {
  color: var(--text-main);
}

.price-features li svg {
  color: var(--accent-cyan);
  flex-shrink: 0;
}

/* ==========================================================================
   SEO Articles Matrix Section
   ========================================================================== */
.articles-section {
  padding: 100px 0;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.article-card:hover {
  transform: translateY(-4px);
  border-color: rgba(45, 212, 191, 0.4);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--accent-cyan);
  margin-bottom: 12px;
  font-weight: 600;
}

.article-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 12px;
}

.article-card h3 a:hover {
  color: var(--accent-cyan);
}

.article-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.article-tag {
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-dim);
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--accent-cyan);
}

/* ==========================================================================
   User Reviews & Testimonials Section
   ========================================================================== */
.reviews-section {
  background: rgba(13, 19, 32, 0.7);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.review-stars {
  color: #fbbf24;
  font-size: 1.1rem;
  display: flex;
  gap: 4px;
}

.review-text {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: auto;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2dd4bf, #3b82f6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #0b0f19;
}

.author-info h5 {
  font-size: 0.95rem;
  font-weight: 700;
}

.author-info p {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ==========================================================================
   FAQ Accordion Section
   ========================================================================== */
.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.05rem;
}

.faq-question svg {
  transition: transform 0.3s ease;
  color: var(--accent-cyan);
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 28px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 250px;
  padding: 0 28px 24px;
}

/* ==========================================================================
   Article Detail Page Formatting
   ========================================================================== */
.article-header-section {
  padding-top: 140px;
  padding-bottom: 60px;
  background: radial-gradient(circle at 50% 20%, rgba(45, 212, 191, 0.1) 0%, transparent 60%);
  border-bottom: 1px solid var(--border-color);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.breadcrumb a:hover {
  color: var(--accent-cyan);
}

.article-title-main {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
}

.article-content-wrap {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  padding: 60px 0;
}

.article-body {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #d1d5db;
}

.article-body h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 36px 0 18px;
  color: #fff;
  border-left: 4px solid var(--accent-cyan);
  padding-left: 14px;
}

.article-body h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 28px 0 14px;
  color: #f3f4f6;
}

.article-body p {
  margin-bottom: 20px;
}

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

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

.article-body blockquote {
  background: rgba(45, 212, 191, 0.08);
  border-left: 4px solid var(--accent-cyan);
  padding: 20px 24px;
  border-radius: var(--radius-sm);
  margin: 24px 0;
  font-style: italic;
  color: var(--text-main);
}

.table-responsive {
  overflow-x: auto;
  margin: 24px 0;
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.article-table th, .article-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.92rem;
}

.article-table th {
  background: rgba(255, 255, 255, 0.05);
  color: var(--accent-cyan);
  font-weight: 700;
}

.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.sidebar-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.sidebar-box h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

/* ==========================================================================
   Footer & Mandatory Core Task 2 PBN Link Area
   ========================================================================== */
.site-footer {
  background: #070a12;
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
}

.footer-brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

/* Core Task 2: PBN Links Styling - Low Key, Aesthetic, Small Font */
.footer-friendly-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-dim);
  padding: 12px 24px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-friendly-links span {
  opacity: 0.4;
}

.footer-friendly-links a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-friendly-links a:hover {
  color: var(--accent-cyan);
}

.footer-copyright {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* Responsive Styles */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-title {
    font-size: 2.4rem;
  }

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

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .mobile-toggle {
    display: block;
  }

  .hero-download-grid {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 2rem;
  }

  .section {
    padding: 60px 0;
  }
}

/* ==========================================================================
   Client Download Modal Dialog
   ========================================================================== */
.download-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(4, 8, 16, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeInModal 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeInModal {
  from { opacity: 0; }
  to { opacity: 1; }
}

.download-modal-card {
  position: relative;
  background: #111827;
  background: linear-gradient(165deg, #151e32 0%, #0d121f 100%);
  border: 1px solid rgba(45, 212, 191, 0.35);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.65), 0 0 35px rgba(45, 212, 191, 0.15);
  border-radius: 20px;
  max-width: 520px;
  width: 100%;
  padding: 32px 28px 24px;
  color: var(--text-main);
  animation: scaleUpModal 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  max-height: 90vh;
  overflow-y: auto;
}

@keyframes scaleUpModal {
  from { transform: scale(0.92) translateY(10px); }
  to { transform: scale(1) translateY(0); }
}

.modal-close-btn {
  position: absolute;
  top: 16px;
  right: 18px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-muted);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  transition: var(--transition);
}

.modal-close-btn:hover {
  background: rgba(239, 68, 68, 0.2);
  border-color: #ef4444;
  color: #fff;
  transform: rotate(90deg);
}

.modal-header {
  text-align: center;
  margin-bottom: 20px;
}

.modal-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border-radius: 20px;
  background: rgba(45, 212, 191, 0.12);
  border: 1px solid rgba(45, 212, 191, 0.3);
  color: var(--accent-cyan);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.modal-title {
  font-size: 1.55rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #ffffff 0%, #2dd4bf 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.modal-subtitle {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.modal-selected-plan {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  background: rgba(45, 212, 191, 0.08);
  border: 1px dashed rgba(45, 212, 191, 0.4);
  border-radius: 10px;
  padding: 10px 14px;
  margin-bottom: 18px;
}

.modal-selected-plan .plan-tag {
  background: var(--accent-cyan);
  color: #042f2e;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 6px;
}

.modal-selected-plan .plan-name-text {
  font-weight: 700;
  color: #fff;
  font-size: 0.95rem;
}

.modal-selected-plan .plan-tip {
  font-size: 0.8rem;
  color: var(--text-muted);
  width: 100%;
}

.modal-platforms-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.modal-platform-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  padding: 14px 18px;
  text-decoration: none;
  color: var(--text-main);
  transition: var(--transition);
}

.modal-platform-btn:hover {
  background: rgba(45, 212, 191, 0.14);
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(45, 212, 191, 0.2);
}

.modal-platform-btn .platform-icon {
  font-size: 1.9rem;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(45, 212, 191, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.modal-platform-btn .platform-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex-grow: 1;
}

.modal-platform-btn .platform-name {
  font-weight: 700;
  font-size: 1rem;
  color: #ffffff;
}

.modal-platform-btn .platform-desc {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.modal-platform-btn .platform-action {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-cyan);
  white-space: nowrap;
}

.modal-steps-guide {
  background: rgba(0, 0, 0, 0.25);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 16px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.modal-steps-guide h4 {
  font-size: 0.85rem;
  color: var(--accent-cyan);
  margin-bottom: 6px;
  font-weight: 700;
}

.modal-steps-guide ol {
  margin-left: 20px;
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.modal-footer {
  text-align: center;
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.modal-direct-link {
  font-size: 0.82rem;
  color: var(--text-dim);
  text-decoration: underline;
  transition: color 0.2s;
}

.modal-direct-link:hover {
  color: var(--accent-cyan);
}