/* ============================================================
   Chase Joy — Main Stylesheet
   Songyuan Zhuhe Network Technology Co., Ltd.
   Design: Bold, asymmetric, energetic, organic shapes
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
  --color-fire: #FF6B35;
  --color-ocean: #004E89;
  --color-forest: #1A936F;
  --color-sun: #FFD166;
  --color-ink: #1A1A2E;
  --color-cream: #FFFBF5;
  --color-snow: #FFFFFF;
  --color-stone: #F0EDE8;
  --color-charcoal: #2D2D3F;

  --font-display: 'Georgia', 'Times New Roman', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --space-2xl: 10rem;

  --radius-sm: 4px;
  --radius-md: 12px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  --shadow-soft: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-bold: 0 8px 40px rgba(0,0,0,0.12);
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-ink);
  background-color: var(--color-cream);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Focus & Selection --- */
:focus-visible {
  outline: 3px solid var(--color-fire);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

::selection {
  background-color: var(--color-fire);
  color: var(--color-snow);
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: 1.15;
  font-weight: 700;
}

h1 { font-size: clamp(3rem, 7vw, 6rem); }
h2 { font-size: clamp(2rem, 4.5vw, 3.5rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 2rem); }

a {
  color: var(--color-ocean);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

a:hover {
  color: var(--color-fire);
  text-decoration-color: var(--color-fire);
}

/* --- Skip Link --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  background: var(--color-ink);
  color: var(--color-snow);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  z-index: 10000;
  font-weight: 600;
  text-decoration: none;
}

.skip-link:focus {
  top: var(--space-md);
}

/* --- Navigation --- */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-sm) var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-snow);
  border-bottom: 2px solid var(--color-ink);
  transition: transform 0.3s ease;
}

.site-nav.nav-hidden {
  transform: translateY(-100%);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-brand:hover {
  color: var(--color-ink);
}

.nav-brand-icon {
  width: 36px;
  height: 36px;
  background: var(--color-fire);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-snow);
  font-size: 1.25rem;
}

.nav-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-ink);
  text-decoration: none;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease;
}

.nav-links a:hover {
  color: var(--color-fire);
  border-bottom-color: var(--color-fire);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: 2px solid var(--color-ink);
  border-radius: var(--radius-sm);
  width: 44px;
  height: 44px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-ink);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO — Bold asymmetrical split with organic blob
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem var(--space-md) 4rem;
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 650px;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-fire);
  background: var(--color-snow);
  border: 2px solid var(--color-fire);
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
}

.hero h1 {
  margin-bottom: var(--space-sm);
  color: var(--color-ink);
}

.hero h1 em {
  font-style: normal;
  color: var(--color-fire);
}

.hero p {
  font-size: 1.25rem;
  max-width: 480px;
  margin-bottom: var(--space-lg);
  color: var(--color-charcoal);
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.hero-visual {
  position: absolute;
  right: -5%;
  top: 50%;
  transform: translateY(-50%);
  width: 45vw;
  max-width: 700px;
  z-index: 1;
}

.blob-group {
  position: relative;
  width: 100%;
  padding-bottom: 100%;
}

.blob {
  position: absolute;
  border-radius: 50%;
}

.blob-1 {
  width: 70%;
  height: 70%;
  background: var(--color-fire);
  top: 5%;
  left: 15%;
  animation: blobFloat 6s ease-in-out infinite;
}

.blob-2 {
  width: 50%;
  height: 50%;
  background: var(--color-sun);
  bottom: 5%;
  right: 5%;
  animation: blobFloat 6s ease-in-out 2s infinite;
}

.blob-3 {
  width: 35%;
  height: 35%;
  background: var(--color-forest);
  top: 15%;
  right: 10%;
  animation: blobFloat 6s ease-in-out 4s infinite;
}

@keyframes blobFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-15px, 10px) scale(1.03); }
  66% { transform: translate(10px, -8px) scale(0.97); }
}

/* ============================================================
   BUTTONS — Bold outline and fill styles
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.2s ease;
  border: 2px solid transparent;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--color-fire);
  color: var(--color-snow);
  border-color: var(--color-fire);
}

.btn-primary:hover {
  background: var(--color-ink);
  border-color: var(--color-ink);
  color: var(--color-snow);
  box-shadow: var(--shadow-bold);
}

.btn-outline {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-ink);
}

.btn-outline:hover {
  background: var(--color-ink);
  color: var(--color-snow);
  box-shadow: var(--shadow-soft);
}

/* ============================================================
   SECTIONS — General spacing
   ============================================================ */
.section {
  padding: var(--space-2xl) var(--space-md);
  position: relative;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-ocean);
  margin-bottom: var(--space-sm);
}

.section-title {
  margin-bottom: var(--space-sm);
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--color-charcoal);
  max-width: 560px;
  margin-bottom: var(--space-lg);
}

/* ============================================================
   FEATURES — Staggered asymmetrical cards
   ============================================================ */
.features {
  background: var(--color-snow);
}

.features-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.feature-row {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
  position: relative;
}

.feature-row:nth-child(even) {
  flex-direction: row-reverse;
}

.feature-visual {
  flex: 1;
  min-width: 0;
}

.feature-shape {
  width: 100%;
  aspect-ratio: 4 / 3;
  border: 3px solid var(--color-ink);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  background: var(--color-stone);
}

.feature-shape-inner {
  position: absolute;
  border-radius: var(--radius-md);
}

.feature-shape .fs-rect {
  width: 55%;
  height: 40%;
  background: var(--color-fire);
  top: 15%;
  left: 10%;
  transform: rotate(-3deg);
}

.feature-shape .fs-circle {
  width: 35%;
  height: 52%;
  background: var(--color-ocean);
  border-radius: 50%;
  top: 30%;
  right: 12%;
}

.feature-shape .fs-squiggle {
  width: 70%;
  height: 25%;
  background: var(--color-sun);
  border-radius: var(--radius-full);
  bottom: 18%;
  left: 15%;
  transform: rotate(2deg);
}

.feature-row:nth-child(2) .feature-shape .fs-rect {
  background: var(--color-forest);
}

.feature-row:nth-child(2) .feature-shape .fs-circle {
  background: var(--color-fire);
}

.feature-row:nth-child(3) .feature-shape .fs-rect {
  background: var(--color-ocean);
}

.feature-row:nth-child(3) .feature-shape .fs-circle {
  background: var(--color-sun);
}

.feature-text {
  flex: 1;
  min-width: 0;
}

.feature-text h3 {
  margin-bottom: var(--space-sm);
}

.feature-text p {
  color: var(--color-charcoal);
  max-width: 440px;
}

.feature-number {
  font-family: var(--font-display);
  font-size: 6rem;
  font-weight: 700;
  color: var(--color-stone);
  line-height: 1;
  margin-bottom: -2rem;
  pointer-events: none;
  user-select: none;
}

/* ============================================================
   COUNTERS — Animated stat strip, horizontal scroll feel
   ============================================================ */
.counters {
  background: var(--color-ink);
  color: var(--color-snow);
  padding: var(--space-xl) var(--space-md);
  overflow: hidden;
}

.counters-strip {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-around;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.counter-item {
  text-align: center;
  min-width: 160px;
}

.counter-value {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1;
  color: var(--color-sun);
}

.counter-suffix {
  color: var(--color-sun);
}

.counter-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: var(--space-xs);
  color: var(--color-stone);
}

/* ============================================================
   VALUES — Organic overlapping card layout
   ============================================================ */
.values {
  background: var(--color-cream);
}

.values-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.values-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.value-card {
  background: var(--color-snow);
  border: 2px solid var(--color-ink);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  max-width: 600px;
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.value-card:nth-child(odd) {
  align-self: flex-start;
}

.value-card:nth-child(even) {
  align-self: flex-end;
  margin-right: 5%;
}

.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-bold);
}

.value-card-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
  border: 2px solid var(--color-ink);
}

.value-card:nth-child(1) .value-card-icon { background: var(--color-fire); color: var(--color-snow); border-color: var(--color-fire); }
.value-card:nth-child(2) .value-card-icon { background: var(--color-ocean); color: var(--color-snow); border-color: var(--color-ocean); }
.value-card:nth-child(3) .value-card-icon { background: var(--color-forest); color: var(--color-snow); border-color: var(--color-forest); }
.value-card:nth-child(4) .value-card-icon { background: var(--color-sun); color: var(--color-ink); border-color: var(--color-sun); }

.value-card h3 {
  margin-bottom: var(--space-xs);
}

.value-card p {
  color: var(--color-charcoal);
}

.value-card::before {
  content: '';
  position: absolute;
  top: -12px;
  left: 30px;
  width: 30px;
  height: 12px;
  background: var(--color-stone);
  clip-path: polygon(0 100%, 50% 0, 100% 100%);
}

/* ============================================================
   CONTACT — Asymmetrical split with bold form
   ============================================================ */
.contact {
  background: var(--color-snow);
}

.contact-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  gap: var(--space-xl);
  align-items: flex-start;
}

.contact-info {
  flex: 1;
}

.contact-info h2 {
  margin-bottom: var(--space-sm);
}

.contact-detail {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  font-size: 1rem;
}

.contact-detail-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--color-ink);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
}

.contact-detail a {
  font-weight: 600;
}

.contact-form-wrap {
  flex: 1.2;
  background: var(--color-cream);
  border: 2px solid var(--color-ink);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  color: var(--color-ink);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  border: 2px solid var(--color-ink);
  border-radius: var(--radius-md);
  background: var(--color-snow);
  color: var(--color-ink);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-fire);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.2);
  outline: none;
}

.form-group textarea {
  resize: vertical;
  min-height: 130px;
}

.form-submit {
  margin-top: var(--space-sm);
}

.form-feedback {
  margin-top: var(--space-sm);
  font-weight: 600;
  font-size: 0.95rem;
  min-height: 1.5rem;
}

.form-feedback.success {
  color: var(--color-forest);
}

.form-feedback.error {
  color: var(--color-fire);
}

/* ============================================================
   FOOTER — Bold dark strip
   ============================================================ */
.site-footer {
  background: var(--color-ink);
  color: var(--color-stone);
  padding: var(--space-xl) var(--space-md) var(--space-md);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.footer-brand p {
  max-width: 320px;
  font-size: 0.95rem;
  margin-top: var(--space-sm);
}

.footer-links {
  display: flex;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-sun);
  margin-bottom: var(--space-sm);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.5rem;
}

.footer-col a {
  color: var(--color-stone);
  text-decoration: none;
  font-size: 0.95rem;
}

.footer-col a:hover {
  color: var(--color-fire);
}

.footer-bottom {
  max-width: 1200px;
  margin: var(--space-lg) auto 0;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-charcoal);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: 0.85rem;
}

/* ============================================================
   LEGAL PAGES — Clean reading layout
   ============================================================ */
.legal-page {
  max-width: 800px;
  margin: 0 auto;
  padding: 8rem var(--space-md) var(--space-xl);
}

.legal-page h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--space-sm);
}

.legal-page .last-updated {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-charcoal);
  margin-bottom: var(--space-lg);
  display: block;
}

.legal-page h2 {
  font-size: 1.5rem;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
  padding-top: var(--space-md);
  border-top: 2px solid var(--color-stone);
}

.legal-page p,
.legal-page ul,
.legal-page ol {
  margin-bottom: var(--space-sm);
}

.legal-page ul,
.legal-page ol {
  padding-left: var(--space-md);
}

.legal-page li {
  margin-bottom: 0.5rem;
}

.legal-page strong {
  color: var(--color-ocean);
}

/* ============================================================
   ANIMATIONS — Scroll-triggered
   ============================================================ */
.anim-fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.anim-fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.anim-fade-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.anim-fade-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.anim-fade-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.anim-fade-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.anim-scale-in {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.anim-scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

.anim-delay-1 { transition-delay: 0.1s; }
.anim-delay-2 { transition-delay: 0.2s; }
.anim-delay-3 { transition-delay: 0.3s; }
.anim-delay-4 { transition-delay: 0.4s; }
.anim-delay-5 { transition-delay: 0.5s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .hero-visual {
    right: -10%;
    width: 40vw;
    opacity: 0.5;
  }

  .feature-row {
    flex-direction: column !important;
    gap: var(--space-md);
  }

  .contact-inner {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    background: var(--color-snow);
    border-left: 2px solid var(--color-ink);
    padding: 6rem var(--space-md) var(--space-md);
    gap: var(--space-sm);
    transition: right 0.3s ease;
    z-index: 999;
  }

  .nav-links.open {
    right: 0;
  }

  .nav-toggle {
    display: flex;
    z-index: 1001;
  }

  .hero {
    padding-top: 6rem;
    text-align: left;
  }

  .hero-visual {
    display: none;
  }

  .hero-actions {
    flex-direction: column;
  }

  .counters-strip {
    flex-direction: column;
    align-items: center;
  }

  .value-card:nth-child(even) {
    align-self: flex-start;
    margin-right: 0;
  }

  .footer-inner,
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
  }

  .footer-links {
    gap: var(--space-md);
  }
}

@media (max-width: 480px) {
  :root {
    --space-md: 1.25rem;
    --space-lg: 2.5rem;
    --space-xl: 3.5rem;
    --space-2xl: 5rem;
  }

  .section {
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
  }

  .contact-form-wrap {
    padding: var(--space-md);
  }
}

/* ============================================================
   PRINT STYLES
   ============================================================ */
@media print {
  .site-nav,
  .site-footer,
  .hero-visual,
  .nav-toggle { display: none; }

  body {
    background: white;
    color: black;
    font-size: 12pt;
  }

  .section {
    padding: 2rem 0;
    page-break-inside: avoid;
  }

  a { color: black; }
}