/* yuntujichang.christmas - Nordic Periwinkle Frost & Glacier Turquoise Sky-Train */
:root {
  --bg-frost: #EEF2FF;
  --bg-lavender: #E0E7FF;
  --bg-crystal: #FFFFFF;
  --ink-nordic: #1E1B4B;
  --ink-slate: #4338CA;
  --iris-main: #4F46E5;
  --glacier-cyan: #0891B2;
  --orchid-pop: #C026D3;
  --border-ice: rgba(79, 70, 229, 0.22);
  --shadow-ice: 0 20px 48px rgba(30, 27, 75, 0.09);
}

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

html {
  scroll-behavior: smooth;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-frost);
  color: var(--ink-nordic);
  line-height: 1.76;
}

body {
  background: linear-gradient(180deg, #E0E7FF 0%, #EEF2FF 40%, #F5F3FF 100%);
  overflow-x: hidden;
}

a, a:visited {
  color: var(--iris-main);
  text-decoration: underline;
  text-underline-offset: 4px;
  font-weight: 700;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--orchid-pop);
}

.nx-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.nx-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(238, 242, 255, 0.94);
  border-bottom: 1px solid var(--border-ice);
  padding: 14px 0;
}

.nx-nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px;
}

.nx-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none !important;
}

.nx-brand-title {
  font-size: 1.44rem;
  font-weight: 900;
  background: linear-gradient(135deg, #1E1B4B 0%, #4F46E5 55%, #0891B2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nx-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.nx-nav a, .nx-nav a:visited {
  color: var(--ink-nordic);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 99px;
}

.nx-nav a:hover, .nx-nav a.active {
  background: rgba(79, 70, 229, 0.12);
  color: var(--iris-main);
}

.btn-nx-top, .btn-nx-top:visited {
  background: linear-gradient(135deg, var(--iris-main), var(--glacier-cyan));
  color: #FFFFFF !important;
  text-decoration: none !important;
  padding: 9px 22px !important;
  border-radius: 99px;
  font-weight: 800;
}

/* Grand Arched Dome Hero Layout */
.nx-hero {
  padding: 48px 0 72px;
}

.nx-dome-frame {
  background: var(--bg-crystal);
  border: 2px solid var(--border-ice);
  border-radius: 140px 140px 36px 36px;
  padding: 56px 44px 44px;
  box-shadow: var(--shadow-ice);
  text-align: center;
}

.nx-frost-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-frost);
  border: 1px solid var(--border-ice);
  color: var(--iris-main);
  padding: 6px 18px;
  border-radius: 99px;
  font-size: 0.86rem;
  font-weight: 800;
  margin-bottom: 18px;
}

.nx-dome-frame h1 {
  font-size: 2.75rem;
  line-height: 1.25;
  max-width: 820px;
  margin: 0 auto 18px;
  color: var(--ink-nordic);
  font-weight: 900;
}

.nx-dome-frame h1 span {
  background: linear-gradient(135deg, #4F46E5, #0891B2, #C026D3);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nx-dome-sub {
  max-width: 740px;
  margin: 0 auto 28px;
  font-size: 1.08rem;
  color: #475569;
}

.nx-cta-pair {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 38px;
}

.btn-nx-iris, .btn-nx-iris:visited {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #4F46E5 0%, #0891B2 100%);
  color: #FFFFFF !important;
  text-decoration: none !important;
  padding: 15px 34px;
  border-radius: 99px;
  font-size: 1.05rem;
  font-weight: 800;
  box-shadow: 0 14px 28px rgba(79, 70, 229, 0.26);
  transition: transform 0.2s ease;
}

.btn-nx-iris:hover {
  transform: translateY(-3px);
}

.btn-nx-crystal, .btn-nx-crystal:visited {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-frost);
  color: var(--ink-nordic) !important;
  text-decoration: none !important;
  padding: 15px 28px;
  border-radius: 99px;
  font-size: 1.02rem;
  font-weight: 800;
  border: 2px solid var(--iris-main);
  transition: transform 0.2s ease;
}

.btn-nx-crystal:hover {
  background: var(--bg-lavender);
  transform: translateY(-3px);
}

/* Animated SVG Stage: Enchanted Sky-Train Gliding Across Crystal Viaduct in Clouds */
.nx-train-stage {
  border-radius: 26px;
  overflow: hidden;
  border: 2px solid rgba(8, 145, 178, 0.35);
  box-shadow: 0 20px 44px rgba(30, 27, 75, 0.18);
}

.nx-train-stage svg {
  width: 100%;
  height: auto;
  display: block;
}

@keyframes trainGlide {
  0%, 100% { transform: translateX(0px) translateY(0px); }
  50% { transform: translateX(18px) translateY(-6px); }
}

@keyframes snowSpin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes ribbonWave {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(10px); }
}

.anim-sky-train {
  animation: trainGlide 5s ease-in-out infinite;
}

.anim-snowflake-1 {
  animation: snowSpin 16s linear infinite;
  transform-origin: 140px 85px;
}

.anim-snowflake-2 {
  animation: snowSpin 20s linear infinite reverse;
  transform-origin: 780px 95px;
}

.anim-sky-ribbon {
  animation: ribbonWave 6s ease-in-out infinite;
}

/* Sections */
.nx-sec {
  padding: 74px 0;
}

.nx-sec.lavender-band {
  background: rgba(224, 231, 255, 0.6);
  border-top: 1px solid var(--border-ice);
  border-bottom: 1px solid var(--border-ice);
}

.nx-sec-head {
  text-align: center;
  max-width: 740px;
  margin: 0 auto 48px;
}

.nx-sec-head h2 {
  font-size: 2.1rem;
  color: var(--ink-nordic);
  margin-bottom: 12px;
  font-weight: 900;
}

.nx-sec-head p {
  color: #475569;
  font-size: 1.03rem;
}

/* 4 Arch-Topped Window Cards */
.nx-arch-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.nx-arch-card {
  background: var(--bg-crystal);
  border: 2px solid var(--border-ice);
  border-radius: 90px 90px 22px 22px;
  padding: 42px 22px 28px;
  text-align: center;
  box-shadow: var(--shadow-ice);
  transition: transform 0.25s ease;
}

.nx-arch-card:hover {
  transform: translateY(-6px);
  border-color: var(--glacier-cyan);
}

.nx-arch-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.14), rgba(8, 145, 178, 0.14));
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nx-arch-card h3 {
  font-size: 1.18rem;
  margin-bottom: 10px;
  color: var(--ink-nordic);
}

.nx-arch-card p {
  font-size: 0.92rem;
  color: #475569;
}

/* Streaming & AI Wide Express Carriages (4 cards) */
.nx-carriage-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.nx-carriage-card {
  background: var(--bg-crystal);
  border: 1px solid var(--border-ice);
  border-top: 5px solid var(--iris-main);
  border-radius: 22px;
  padding: 28px;
  box-shadow: var(--shadow-ice);
}

.nx-carriage-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--glacier-cyan);
  background: rgba(8, 145, 178, 0.1);
  padding: 4px 12px;
  border-radius: 99px;
  margin-bottom: 12px;
}

.nx-carriage-card h3 {
  font-size: 1.22rem;
  margin-bottom: 8px;
  color: var(--ink-nordic);
}

.nx-carriage-card p {
  font-size: 0.94rem;
  color: #475569;
}

/* Pricing (3 Chalet Crystal Cards) */
.nx-price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.nx-price-card {
  background: var(--bg-crystal);
  border: 2px solid var(--border-ice);
  border-radius: 28px;
  padding: 36px 28px;
  box-shadow: var(--shadow-ice);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.nx-price-card.star {
  background: linear-gradient(180deg, #1E1B4B 0%, #312E81 100%);
  color: #FFFFFF;
  border-color: var(--glacier-cyan);
}

.nx-price-card.star h3,
.nx-price-card.star li {
  color: #FFFFFF !important;
}

.nx-price-val {
  font-size: 2.45rem;
  font-weight: 900;
  color: var(--iris-main);
  margin: 14px 0;
}

.nx-price-card.star .nx-price-val {
  color: #38BDF8;
}

.nx-price-ul {
  list-style: none;
  margin: 16px 0 26px;
}

.nx-price-ul li {
  padding: 8px 0;
  border-bottom: 1px dashed rgba(148, 163, 184, 0.25);
  font-size: 0.94rem;
}

/* Testimonials & FAQ */
.nx-voice-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.nx-voice-card {
  background: var(--bg-crystal);
  border: 1px solid var(--border-ice);
  border-radius: 22px;
  padding: 26px;
  box-shadow: var(--shadow-ice);
}

.nx-faq-stack {
  max-width: 860px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}

.nx-faq-item {
  background: var(--bg-crystal);
  border: 1px solid var(--border-ice);
  border-radius: 18px;
  padding: 22px 26px;
  box-shadow: var(--shadow-ice);
}

.nx-faq-item h3 {
  font-size: 1.12rem;
  color: var(--iris-main);
  margin-bottom: 8px;
}

/* Hub Cards */
.nx-hub-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.nx-hub-card {
  background: var(--bg-crystal);
  border: 1px solid var(--border-ice);
  border-radius: 22px;
  padding: 26px;
  box-shadow: var(--shadow-ice);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.nx-hub-card h2, .nx-hub-card h3 {
  font-size: 1.16rem;
  margin: 10px 0;
}

/* Subpage */
.nx-doc-sec {
  padding: 52px 0 78px;
}

.nx-doc-card {
  max-width: 890px;
  margin: 0 auto;
  background: var(--bg-crystal);
  border: 2px solid var(--border-ice);
  border-radius: 28px;
  padding: 44px;
  box-shadow: var(--shadow-ice);
}

.nx-doc-card h1 {
  font-size: 2rem;
  margin-bottom: 12px;
}

.nx-doc-meta {
  font-size: 0.88rem;
  color: #64748B;
  padding-bottom: 16px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border-ice);
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.nx-doc-body h2 {
  font-size: 1.38rem;
  color: var(--iris-main);
  margin: 26px 0 12px;
}

.nx-doc-body h3 {
  font-size: 1.14rem;
  color: var(--glacier-cyan);
  margin: 18px 0 8px;
}

.nx-doc-body p {
  margin-bottom: 15px;
}

.nx-footer {
  background: #1E1B4B;
  color: #E0E7FF;
  padding: 42px 0;
  border-top: 3px solid var(--glacier-cyan);
}

.nx-footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.nx-footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.nx-footer-links a, .nx-footer-links a:visited {
  color: #38BDF8 !important;
  text-decoration: none;
}

@media (max-width: 980px) {
  .nx-arch-grid,
  .nx-carriage-grid,
  .nx-price-grid,
  .nx-voice-row,
  .nx-hub-grid {
    grid-template-columns: 1fr;
  }
  .nx-dome-frame {
    border-radius: 48px 48px 24px 24px;
    padding: 36px 20px;
  }
}

@media (max-width: 768px) {
  .nx-nav-row {
    flex-direction: column;
    align-items: flex-start;
  }
  .nx-nav {
    display: flex !important;
    width: 100%;
    flex-wrap: wrap;
    gap: 8px;
  }
  .nx-dome-frame h1 {
    font-size: 2rem;
  }
  .nx-doc-card {
    padding: 24px 18px;
  }
}