/* ==========================================================================
   星辰VPN (StarLight VPN) - Lunar Halo Brand System
   Palette:
     Deep Indigo:      #131528
     Panel:            #1D2140
     Panel Hover:      #22274A
     Moonlight:        #EDE6D6
     Champagne Gold:   #C9A876
     Dusk Rose:        #B76E79 (used sparingly)
     Text Muted:       rgba(237, 230, 214, 0.65)
     Gold Hairline:    rgba(201, 168, 118, 0.18)
     Gold Border Hover:rgba(201, 168, 118, 0.45)
   Typography:
     Headings: "Marcellus", serif (wide letter-spacing 0.2em+)
     Body:     "Figtree", sans-serif (light 300)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Figtree:ital,wght@0,300;0,400;0,500;1,300;1,400&family=Marcellus&display=swap');

:root {
  --bg-deep: #131528;
  --panel-bg: #1D2140;
  --panel-hover: #22274A;
  --moonlight: #EDE6D6;
  --gold: #C9A876;
  --gold-soft: rgba(201, 168, 118, 0.12);
  --gold-glow: rgba(201, 168, 118, 0.25);
  --dusk-rose: #B76E79;
  --text-main: #EDE6D6;
  --text-muted: rgba(237, 230, 214, 0.65);
  --hairline: rgba(201, 168, 118, 0.18);
  --hairline-hover: rgba(201, 168, 118, 0.42);
  --font-heading: 'Marcellus', Georgia, "Times New Roman", serif;
  --font-body: 'Figtree', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --container-max: 1200px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-pill: 9999px;
  --transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

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

body {
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.8;
  background-color: var(--bg-deep);
  color: var(--text-main);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

/* Typography with wide letter-spacing */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.35;
  color: var(--text-main);
  letter-spacing: 0.2em;
}

p {
  color: var(--text-muted);
  font-weight: 300;
}

.italic-serif {
  font-family: var(--font-heading);
  font-style: italic;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 28px;
  padding-right: 28px;
}

/* One soft radial moonlight glow behind the hero only */
.hero-glow-bg {
  position: absolute;
  top: -80px;
  left: 50%;
  transform: translateX(-50%);
  width: 780px;
  height: 520px;
  background: radial-gradient(ellipse at center, rgba(237, 230, 214, 0.07) 0%, rgba(201, 168, 118, 0.04) 40%, rgba(19, 21, 40, 0) 72%);
  filter: blur(70px);
  pointer-events: none;
  z-index: 0;
}

/* Quiet luxury outlined buttons with soft fill on hover */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  padding: 13px 30px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  border: 1px solid var(--gold);
  background: transparent;
  color: var(--moonlight);
  transition: var(--transition);
  text-align: center;
  white-space: nowrap;
}

.btn:hover {
  background: rgba(201, 168, 118, 0.16);
  border-color: var(--moonlight);
  color: #FFFFFF;
  transform: translateY(-2px);
}

.btn-primary {
  border: 1px solid var(--gold);
  background: rgba(201, 168, 118, 0.08);
  color: var(--moonlight);
}

.btn-primary:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--bg-deep);
}

.btn-secondary {
  border: 1px solid var(--hairline);
  background: transparent;
  color: var(--text-muted);
}

.btn-secondary:hover {
  border-color: var(--gold);
  background: rgba(201, 168, 118, 0.08);
  color: var(--moonlight);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(19, 21, 40, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--hairline);
  padding: 18px 0;
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: 1.25rem;
  letter-spacing: 0.22em;
  color: var(--moonlight);
}

.brand-logo svg {
  width: 34px;
  height: 34px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.nav-link:hover, .nav-link.active {
  color: var(--gold);
}

.nav-badge-pill {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  padding: 2px 8px;
  background: rgba(183, 110, 121, 0.15); /* Dusk rose used sparingly */
  border: 1px solid rgba(183, 110, 121, 0.4);
  color: #df9ea7;
  border-radius: var(--radius-pill);
  margin-left: 6px;
}

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

/* Section Header Shared - Generous 96px section spacing */
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  background: var(--gold-soft);
  border: 1px solid var(--hairline);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 20px;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 20px;
  letter-spacing: 0.22em;
  line-height: 1.35;
}

.section-desc {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-muted);
  font-weight: 300;
}

/* Hero Section */
.hero-section {
  position: relative;
  padding: 110px 0 96px 0;
  text-align: center;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--moonlight);
  background: var(--panel-bg);
  border: 1px solid var(--hairline);
  padding: 8px 22px;
  border-radius: var(--radius-pill);
  margin-bottom: 32px;
}

.hero-tag .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--gold);
  box-shadow: 0 0 8px rgba(201, 168, 118, 0.6);
}

.hero-title {
  font-size: 3.4rem;
  line-height: 1.35;
  letter-spacing: 0.24em;
  margin-bottom: 28px;
  font-weight: 400;
}

.hero-title .accent-text {
  color: var(--gold);
  font-style: italic;
  letter-spacing: 0.16em;
}

.hero-intro {
  font-size: 1.15rem;
  line-height: 1.95;
  color: var(--text-muted);
  max-width: 740px;
  margin: 0 auto 44px auto;
  font-weight: 300;
}

.hero-btns {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding-top: 44px;
  border-top: 1px solid var(--hairline);
}

.stat-item h3 {
  font-size: 1.85rem;
  color: var(--gold);
  letter-spacing: 0.15em;
  margin-bottom: 6px;
}

.stat-item p {
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}

/* Features Grid (3 Core Cards) - Generous 96px spacing */
.features-section {
  padding: 96px 0;
  border-top: 1px solid var(--hairline);
}

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

.feature-card {
  background: var(--panel-bg);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-3px);
  border-color: var(--hairline-hover);
  background: var(--panel-hover);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-pill);
  background: var(--gold-soft);
  border: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 28px;
  color: var(--gold);
}

.card-icon.violet {
  background: rgba(183, 110, 121, 0.12); /* Dusk rose */
  border-color: rgba(183, 110, 121, 0.3);
  color: #df9ea7;
}

.feature-card h3 {
  font-size: 1.3rem;
  letter-spacing: 0.18em;
  margin-bottom: 16px;
}

.feature-card p {
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 24px;
  flex-grow: 1;
}

.feature-points {
  margin-top: auto;
  border-top: 1px solid var(--hairline);
  padding-top: 20px;
}

.feature-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.feature-points li:last-child {
  margin-bottom: 0;
}

.check-icon {
  color: var(--gold);
}

/* Streaming & AI Support Section - Generous 96px spacing */
.streaming-section {
  padding: 96px 0;
  border-top: 1px solid var(--hairline);
}

.streaming-box {
  background: var(--panel-bg);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: 56px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 52px;
  align-items: center;
}

.streaming-info h3 {
  font-size: 1.85rem;
  letter-spacing: 0.2em;
  margin-bottom: 20px;
}

.streaming-info p {
  font-size: 1rem;
  line-height: 1.85;
  margin-bottom: 28px;
}

.badge-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.service-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(19, 21, 40, 0.6);
  border: 1px solid var(--hairline);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  color: var(--moonlight);
  letter-spacing: 0.05em;
  transition: var(--transition);
}

.service-pill:hover {
  border-color: var(--gold);
  background: var(--gold-soft);
  color: var(--gold);
}

.streaming-visual {
  background: rgba(19, 21, 40, 0.7);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 30px;
}

.speed-metric-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--hairline);
}

.speed-metric-header span:first-child {
  font-family: var(--font-heading);
  letter-spacing: 0.15em;
  font-size: 0.95rem;
}

.speed-status {
  color: var(--gold);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  gap: 6px;
}

.speed-status::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gold);
}

.speed-bars {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.speed-bar-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.bar-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.bar-track {
  width: 100%;
  height: 6px;
  background: rgba(237, 230, 214, 0.06);
  border-radius: 3px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, rgba(201, 168, 118, 0.6) 0%, var(--gold) 100%);
  border-radius: 3px;
}

/* Pricing Section - Generous 96px spacing */
.pricing-section {
  padding: 96px 0;
  border-top: 1px solid var(--hairline);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

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

.price-card:hover {
  transform: translateY(-3px);
  border-color: var(--hairline-hover);
  background: var(--panel-hover);
}

.price-card.featured {
  border-color: var(--gold);
  background: linear-gradient(180deg, #1D2140 0%, #24294F 100%);
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gold);
  color: var(--bg-deep);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  padding: 3px 14px;
  border-radius: var(--radius-pill);
}

.plan-name {
  font-size: 1.25rem;
  letter-spacing: 0.2em;
  margin-bottom: 10px;
}

.plan-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.plan-price {
  margin-bottom: 28px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.plan-price .currency {
  font-size: 1.2rem;
  color: var(--gold);
}

.plan-price .amount {
  font-size: 2.6rem;
  font-family: var(--font-heading);
  letter-spacing: 0.05em;
  color: var(--moonlight);
  line-height: 1;
}

.plan-price .period {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.plan-features {
  margin-bottom: 32px;
  flex-grow: 1;
  border-top: 1px solid var(--hairline);
  padding-top: 24px;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.plan-features li .check {
  color: var(--gold);
}

.price-card .btn {
  width: 100%;
}

/* User Reviews Section - Generous 96px spacing */
.reviews-section {
  padding: 96px 0;
  border-top: 1px solid var(--hairline);
}

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

.review-card {
  background: var(--panel-bg);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: var(--transition);
}

.review-card:hover {
  transform: translateY(-2px);
  border-color: var(--hairline-hover);
}

.review-stars {
  color: var(--gold);
  margin-bottom: 18px;
  letter-spacing: 4px;
  font-size: 0.88rem;
}

.review-text {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--text-main);
  margin-bottom: 24px;
  font-style: italic;
  font-family: var(--font-body);
}

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

.avatar-circle {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--gold-soft);
  border: 1px solid var(--hairline);
  color: var(--gold);
  font-family: var(--font-heading);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
}

.reviewer-info h4 {
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  font-weight: 400;
}

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

/* FAQ Section - Generous 96px spacing */
.faq-section {
  padding: 96px 0;
  border-top: 1px solid var(--hairline);
}

.faq-list {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.faq-item {
  background: var(--panel-bg);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 28px 32px;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--hairline-hover);
}

.faq-item h3 {
  font-size: 1.15rem;
  letter-spacing: 0.14em;
  margin-bottom: 12px;
  color: var(--moonlight);
  display: flex;
  align-items: center;
  gap: 12px;
}

.faq-item h3::before {
  content: "✦";
  color: var(--gold);
  font-size: 0.85rem;
}

.faq-item p {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-muted);
  padding-left: 24px;
}

/* Final CTA Section - Generous 96px spacing */
.cta-banner-section {
  padding: 96px 0;
  border-top: 1px solid var(--hairline);
}

.cta-banner {
  background: var(--panel-bg);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: 64px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner h2 {
  font-size: 2.3rem;
  letter-spacing: 0.22em;
  margin-bottom: 18px;
}

.cta-banner p {
  font-size: 1.1rem;
  max-width: 640px;
  margin: 0 auto 36px auto;
}

/* Footer Section - Quiet luxury */
.site-footer {
  border-top: 1px solid var(--hairline);
  background-color: #0E1020;
  padding: 56px 0 40px 0;
  text-align: center;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 44px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.footer-nav a {
  font-family: var(--font-heading);
  letter-spacing: 0.18em;
  font-size: 0.92rem;
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.footer-nav a:hover {
  color: var(--gold);
}

.footer-copyright {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: rgba(237, 230, 214, 0.45);
}

/* Responsive Media Queries (@media) */
@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cards-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .streaming-box {
    grid-template-columns: 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.15rem;
    letter-spacing: 0.16em;
  }
  .hero-intro {
    font-size: 1rem;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .cards-grid-3 {
    grid-template-columns: 1fr;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .streaming-box {
    padding: 28px;
  }
  .nav-menu {
    display: none;
  }
  .footer-nav {
    gap: 18px;
  }
  .btn {
    width: 100%;
    padding: 13px 20px;
  }
  .hero-btns {
    flex-direction: column;
    width: 100%;
  }
}