/* === FENGHU.BUZZ — Original Stylesheet === */
/* Color Palette (solid hex only, no translucent values) */
:root {
  --color-abyss: #0b1a2f;
  --color-midnight: #152238;
  --color-royal: #1e3a5f;
  --color-steel: #2d4a6f;
  --color-teal: #06d6a0;
  --color-coral: #ff6b6b;
  --color-gold: #f4a261;
  --color-amber: #e9c46a;
  --color-sky: #48cae4;
  --color-white: #ffffff;
  --color-snow: #f8f9fa;
  --color-mist: #e8ecf1;
  --color-fog: #ced4da;
  --color-charcoal: #1a1a2e;
  --color-slate: #4a4a5a;
  --color-medium: #6c757d;
  --font-heading: 'Georgia', 'Times New Roman', serif;
  --font-body: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Consolas', 'Courier New', monospace;
}

/* === RESET & BASE === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-charcoal);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.3;
  color: var(--color-abyss);
}

h1 { font-size: 2.8rem; font-weight: 700; }
h2 { font-size: 2.2rem; font-weight: 600; }
h3 { font-size: 1.5rem; font-weight: 600; }
h4 { font-size: 1.2rem; font-weight: 600; }

p { margin-bottom: 1rem; }

a {
  color: var(--color-royal);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover { color: var(--color-teal); }

img { max-width: 100%; height: auto; display: block; }

ul, ol { margin-bottom: 1rem; padding-left: 1.5rem; }
li { margin-bottom: 0.4rem; }

strong { color: var(--color-abyss); }

/* === NAVIGATION === */
.site-nav {
  background-color: var(--color-abyss);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 68px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-teal);
  text-decoration: none;
  letter-spacing: 0.5px;
}

.nav-brand-geo {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--color-teal), var(--color-sky));
  clip-path: polygon(50% 0%, 100% 38%, 82% 100%, 18% 100%, 0% 38%);
}

.nav-links {
  display: flex;
  gap: 2.2rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-links a {
  color: var(--color-mist);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
  text-decoration: none;
  transition: color 0.2s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-teal);
  transition: width 0.25s ease;
}

.nav-links a:hover { color: var(--color-teal); }
.nav-links a:hover::after { width: 100%; }

.nav-links a.active { color: var(--color-teal); }
.nav-links a.active::after { width: 100%; }

/* === HERO SECTION (Homepage) === */
.hero {
  background-color: var(--color-midnight);
  position: relative;
  overflow: hidden;
  padding: 7rem 2rem 6rem;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, transparent 49.5%, var(--color-royal) 49.5%, var(--color-royal) 50.5%, transparent 50.5%),
    linear-gradient(225deg, transparent 49.5%, var(--color-steel) 49.5%, var(--color-steel) 50.5%, transparent 50.5%);
  background-size: 120px 120px;
  opacity: 0.12;
}

.hero-wave {
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 100px;
  background-color: var(--color-white);
  clip-path: polygon(0% 100%, 0% 60%, 5% 45%, 12% 55%, 20% 38%, 28% 48%, 35% 30%, 43% 42%, 50% 25%, 58% 38%, 65% 20%, 73% 32%, 80% 28%, 88% 40%, 95% 35%, 100% 45%, 100% 100%);
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  background-color: var(--color-teal);
  color: var(--color-abyss);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  padding: 0.4rem 1.2rem;
  border-radius: 50px;
  margin-bottom: 1.5rem;
}

.hero h1 {
  color: var(--color-white);
  font-size: 3.5rem;
  margin-bottom: 1.2rem;
  letter-spacing: -0.5px;
}

.hero h1 .highlight {
  color: var(--color-teal);
}

.hero p {
  color: var(--color-mist);
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background-color 0.2s;
  text-decoration: none;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background-color: var(--color-teal);
  color: var(--color-abyss);
  box-shadow: 0 4px 14px rgba(6, 214, 160, 0.35);
}
.btn-primary:hover {
  background-color: #05c495;
  color: var(--color-abyss);
  box-shadow: 0 6px 20px rgba(6, 214, 160, 0.5);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-steel);
}
.btn-outline:hover {
  border-color: var(--color-teal);
  color: var(--color-teal);
  box-shadow: 0 4px 14px rgba(6, 214, 160, 0.2);
}

/* === STATS STRIP === */
.stats-strip {
  background-color: var(--color-abyss);
  padding: 3rem 2rem;
}

.stats-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-card { padding: 1rem; }
.stat-number {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--color-teal);
  line-height: 1.1;
}
.stat-label {
  color: var(--color-fog);
  font-size: 0.9rem;
  margin-top: 0.4rem;
}

/* === SERVICES SECTION === */
.services {
  padding: 6rem 2rem;
  background-color: var(--color-white);
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 4rem;
}

.section-header .section-tag {
  display: inline-block;
  background-color: var(--color-mist);
  color: var(--color-royal);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  padding: 0.35rem 1rem;
  border-radius: 4px;
  margin-bottom: 1rem;
  border-left: 3px solid var(--color-teal);
}

.section-header h2 {
  color: var(--color-abyss);
  margin-bottom: 0.8rem;
}

.section-header p {
  color: var(--color-slate);
  font-size: 1.05rem;
}

.services-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.service-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-mist);
  border-radius: 12px;
  padding: 2.5rem 2rem;
  transition: transform 0.25s, box-shadow 0.25s;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background-color: var(--color-teal);
  transition: height 0.4s ease;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(11, 26, 47, 0.12);
}

.service-card:hover::before { height: 100%; }

.service-icon {
  width: 56px;
  height: 56px;
  margin-bottom: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
}

.service-card h3 {
  color: var(--color-abyss);
  margin-bottom: 0.8rem;
}

.service-card p {
  color: var(--color-slate);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* === EXPERTISE PANELS === */
.expertise {
  padding: 6rem 2rem;
  background-color: var(--color-snow);
}

.expertise-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.expertise-visual {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 1.2rem;
  aspect-ratio: 1;
}

.exp-block {
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 1px;
  position: relative;
  overflow: hidden;
}

.exp-block:nth-child(1) {
  background-color: var(--color-royal);
  clip-path: polygon(0 0, 85% 0, 100% 15%, 100% 100%, 0 100%);
}

.exp-block:nth-child(2) {
  background-color: var(--color-teal);
  clip-path: polygon(15% 0, 100% 0, 100% 100%, 0 100%, 0 15%);
  color: var(--color-abyss);
}

.exp-block:nth-child(3) {
  background-color: var(--color-coral);
  clip-path: polygon(0 15%, 100% 0, 100% 85%, 0% 100%);
}

.exp-block:nth-child(4) {
  background-color: var(--color-gold);
  clip-path: polygon(0 0, 100% 15%, 100% 100%, 15% 100%);
  color: var(--color-abyss);
}

.expertise-content h2 { margin-bottom: 1rem; }
.expertise-content p {
  color: var(--color-slate);
  margin-bottom: 1.5rem;
}

.expertise-list {
  list-style: none;
  padding: 0;
}

.expertise-list li {
  padding: 0.7rem 0;
  padding-left: 1.8rem;
  position: relative;
  color: var(--color-charcoal);
}

.expertise-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 1rem;
  width: 8px;
  height: 8px;
  background-color: var(--color-teal);
  transform: rotate(45deg);
}

/* === TRUST BADGES === */
.trust {
  padding: 5rem 2rem;
  background-color: var(--color-abyss);
}

.trust-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.trust-card {
  padding: 2rem 1.5rem;
  border: 1px solid var(--color-royal);
  border-radius: 8px;
  transition: border-color 0.3s;
}

.trust-card:hover { border-color: var(--color-teal); }

.trust-icon-symbol {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.trust-card h4 {
  color: var(--color-white);
  margin-bottom: 0.5rem;
}

.trust-card p {
  color: var(--color-fog);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* === METHODOLOGY === */
.methodology {
  padding: 6rem 2rem;
  background-color: var(--color-white);
}

.methodology-steps {
  max-width: 900px;
  margin: 0 auto;
  counter-reset: step;
}

.step-block {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 1.5rem;
  align-items: start;
  padding: 1.8rem 0;
  border-bottom: 1px solid var(--color-mist);
}

.step-block:last-child { border-bottom: none; }

.step-num {
  width: 56px;
  height: 56px;
  background-color: var(--color-abyss);
  color: var(--color-teal);
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.step-content h3 {
  color: var(--color-abyss);
  margin-bottom: 0.4rem;
}

.step-content p {
  color: var(--color-slate);
  margin-bottom: 0;
}

/* === INDUSTRIES === */
.industries {
  padding: 6rem 2rem;
  background-color: var(--color-snow);
}

.industries-tag-cloud {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  justify-content: center;
}

.tag-pill {
  padding: 0.65rem 1.4rem;
  border: 2px solid var(--color-mist);
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-royal);
  background-color: var(--color-white);
  transition: all 0.25s;
  cursor: default;
}

.tag-pill:hover {
  border-color: var(--color-teal);
  color: var(--color-abyss);
  background-color: var(--color-mist);
}

.tag-pill.featured {
  border-color: var(--color-teal);
  color: var(--color-abyss);
  font-weight: 600;
}

/* === CTA SECTION === */
.cta-section {
  padding: 5rem 2rem;
  background: linear-gradient(160deg, var(--color-midnight), var(--color-royal));
  text-align: center;
  color: var(--color-white);
  position: relative;
}

.cta-section h2 {
  color: var(--color-white);
  margin-bottom: 1rem;
}

.cta-section p {
  color: var(--color-mist);
  max-width: 550px;
  margin: 0 auto 2rem;
  font-size: 1.05rem;
}

.cta-contact-info {
  max-width: 500px;
  margin: 2rem auto 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.3rem 2rem;
  text-align: left;
  font-size: 0.9rem;
  color: var(--color-fog);
}

.cta-contact-info span {
  color: var(--color-teal);
  font-weight: 500;
  word-break: break-all;
}

/* === FOOTER === */
.site-footer {
  background-color: var(--color-abyss);
  padding: 4rem 2rem 1.5rem;
  color: var(--color-fog);
}

.footer-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-royal);
}

.footer-brand-name {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--color-teal);
  margin-bottom: 0.8rem;
}

.footer-brand-desc {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 0;
  color: var(--color-fog);
}

.footer-col h4 {
  color: var(--color-white);
  margin-bottom: 1.2rem;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
}

.footer-col ul li { margin-bottom: 0.6rem; }

.footer-col ul li a {
  color: var(--color-fog);
  font-size: 0.9rem;
  transition: color 0.2s;
}

.footer-col ul li a:hover { color: var(--color-teal); }

.footer-bottom {
  max-width: 1100px;
  margin: 1.5rem auto 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-medium);
}

/* === PAGE BANNER (Privacy / TOS) === */
.page-banner {
  background-color: var(--color-midnight);
  padding: 5rem 2rem;
  text-align: center;
  position: relative;
}

.page-banner h1 {
  color: var(--color-white);
  font-size: 2.8rem;
  margin-bottom: 0.8rem;
}

.page-banner p {
  color: var(--color-fog);
  font-size: 1rem;
}

/* === LEGAL CONTENT (Privacy + TOS) === */
.legal-content {
  max-width: 860px;
  margin: 0 auto;
  padding: 4rem 2rem 5rem;
}

.legal-section {
  margin-bottom: 2.8rem;
}

.legal-section h2 {
  font-size: 1.6rem;
  color: var(--color-abyss);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-mist);
}

.legal-section h3 {
  font-size: 1.2rem;
  color: var(--color-royal);
  margin-bottom: 0.6rem;
}

.legal-section p {
  color: var(--color-slate);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.legal-section ul,
.legal-section ol {
  color: var(--color-slate);
  line-height: 1.8;
  margin-bottom: 1rem;
  padding-left: 1.6rem;
}

.legal-section ul li,
.legal-section ol li {
  margin-bottom: 0.5rem;
}

.legal-last-updated {
  background-color: var(--color-snow);
  border-left: 4px solid var(--color-teal);
  padding: 1rem 1.5rem;
  margin-bottom: 3rem;
  color: var(--color-slate);
  font-size: 0.9rem;
  border-radius: 0 6px 6px 0;
}

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: 1fr 1fr; }
  .expertise-grid { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .expertise-visual { max-width: 300px; margin: 0 auto; }
  .hero h1 { font-size: 2.4rem; }
  .cta-contact-info { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .nav-inner { flex-direction: column; height: auto; padding: 1rem; gap: 0.8rem; }
  .nav-links { gap: 1rem; flex-wrap: wrap; justify-content: center; }
  .stats-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.9rem; }
  .hero { padding: 4rem 1.5rem 3rem; }
  .step-block { grid-template-columns: 50px 1fr; gap: 1rem; }
}