:root {
  --bg-paper: #f7f5f2;
  --bg-white: #fafafa;
  --ink: #1c1c1e;
  --ink-light: #3a3a3c;
  --gray: #8e8e93;
  --gray-light: #c7c7cc;
  --line: #e5e5ea;
  --line-warm: #d4d0c8;
  --accent: #2d4a5e;
  --accent-warm: #b8956a;
  --accent-muted: rgba(45,74,94,0.06);
}

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

html { scroll-behavior: smooth; }

body.zsdigital-home {
  font-family: 'Noto Sans SC', -apple-system, sans-serif;
  color: var(--ink);
  background: var(--bg-white);
  line-height: 1.9;
  font-weight: 400;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
}

/* ===== NAV ===== */
body.zsdigital-home nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 0 64px;
  background: rgba(250,250,250,0.92);
  backdrop-filter: blur(24px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s;
}

body.zsdigital-home nav.scrolled { border-bottom-color: var(--line); }

body.zsdigital-home .nav-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  margin-right: auto;
}

body.zsdigital-home .nav-brand-mark {
  width: 32px; height: 32px;
  border: 1.5px solid var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.05em;
}

body.zsdigital-home .nav-brand-text {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.12em;
}

body.zsdigital-home .nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  margin-right: 24px;
}

body.zsdigital-home .nav-links a {
  text-decoration: none;
  color: var(--gray);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.08em;
  transition: color 0.3s;
  position: relative;
}

body.zsdigital-home .nav-links a:hover { color: var(--ink); }

body.zsdigital-home .nav-links a::after {
  content: '';
  position: absolute;
  bottom: -6px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.4s ease;
}

body.zsdigital-home .nav-links a:hover::after { width: 100%; }

body.zsdigital-home .nav-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

body.zsdigital-home .nav-actions a {
  text-decoration: none;
  color: var(--gray);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.08em;
  transition: color 0.3s;
  position: relative;
}

body.zsdigital-home .nav-actions a:hover { color: var(--ink); }

body.zsdigital-home .nav-actions a::after {
  content: '';
  position: absolute;
  bottom: -6px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.4s ease;
}

body.zsdigital-home .nav-actions a:hover::after { width: 100%; }

/* ===== HERO ===== */
body.zsdigital-home .hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 45% 55%;
  overflow: hidden;
}

body.zsdigital-home .hero-left {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 64px 80px;
  position: relative;
  z-index: 2;
  background: var(--bg-white);
}

body.zsdigital-home .hero-vertical {
  position: absolute;
  right: 32px;
  top: 50%;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--gray-light);
  font-weight: 300;
}

body.zsdigital-home .hero-label {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gray);
  margin-bottom: 32px;
  text-transform: uppercase;
}

body.zsdigital-home .hero h1 {
  font-family: 'Noto Serif SC', serif;
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 400;
  line-height: 1.5;
  color: var(--ink);
  margin-bottom: 32px;
  letter-spacing: 0.04em;
}

body.zsdigital-home .hero h1 em {
  font-style: normal;
  color: var(--accent);
}

body.zsdigital-home .hero-desc {
  font-size: 14px;
  color: var(--gray);
  line-height: 2.2;
  max-width: 420px;
  margin-bottom: 48px;
  font-weight: 300;
}

body.zsdigital-home .hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 36px;
  background: var(--ink);
  color: var(--bg-white);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.1em;
  transition: all 0.4s ease;
  border: none;
  cursor: pointer;
}

body.zsdigital-home .hero-cta:hover {
  background: var(--accent);
  gap: 20px;
}

body.zsdigital-home .hero-cta-arrow {
  transition: transform 0.4s ease;
}

body.zsdigital-home .hero-cta:hover .hero-cta-arrow {
  transform: translateX(6px);
}

body.zsdigital-home .hero-right {
  position: relative;
  overflow: hidden;
}

body.zsdigital-home .hero-right img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(20%) contrast(0.95);
  transition: transform 8s ease;
}

body.zsdigital-home .hero:hover .hero-right img {
  transform: scale(1.03);
}

body.zsdigital-home .hero-right::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, var(--bg-white) 0%, transparent 25%);
}

body.zsdigital-home .hero-stats {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  background: var(--bg-white);
}

body.zsdigital-home .hero-stat {
  padding: 28px 0;
  text-align: center;
  border-right: 1px solid var(--line);
}

body.zsdigital-home .hero-stat:last-child { border-right: none; }

body.zsdigital-home .hero-stat-num {
  font-family: 'Noto Serif SC', serif;
  font-size: 24px;
  font-weight: 400;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 8px;
}

body.zsdigital-home .hero-stat-label {
  font-size: 11px;
  color: var(--gray);
  letter-spacing: 0.1em;
}

/* ===== SECTIONS ===== */
body.zsdigital-home .section {
  padding: 140px 64px;
  max-width: 1200px;
  margin: 0 auto;
}

body.zsdigital-home .section-header {
  display: flex;
  align-items: flex-start;
  gap: 80px;
  margin-bottom: 80px;
}

body.zsdigital-home .section-num {
  font-size: 11px;
  color: var(--gray-light);
  letter-spacing: 0.15em;
  font-weight: 300;
  padding-top: 6px;
  min-width: 40px;
}

body.zsdigital-home .section-title {
  font-family: 'Noto Serif SC', serif;
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 400;
  line-height: 1.5;
  color: var(--ink);
  letter-spacing: 0.04em;
}

/* ===== PHILOSOPHY ===== */
body.zsdigital-home .philosophy {
  background: var(--bg-paper);
  text-align: center;
  padding: 160px 64px;
}

body.zsdigital-home .philosophy-inner {
  max-width: 800px;
  margin: 0 auto;
}

body.zsdigital-home .philosophy-label {
  font-size: 11px;
  letter-spacing: 0.25em;
  color: var(--gray);
  margin-bottom: 40px;
}

body.zsdigital-home .philosophy h2 {
  font-family: 'Noto Serif SC', serif;
  font-size: clamp(22px, 2.5vw, 32px);
  font-weight: 400;
  line-height: 2;
  color: var(--ink);
  margin-bottom: 40px;
  letter-spacing: 0.06em;
}

body.zsdigital-home .philosophy-line {
  width: 40px;
  height: 1px;
  background: var(--accent-warm);
  margin: 0 auto 40px;
}

body.zsdigital-home .philosophy-desc {
  font-size: 14px;
  color: var(--gray);
  line-height: 2.4;
  font-weight: 300;
  max-width: 560px;
  margin: 0 auto;
}

/* ===== SERVICES ===== */
body.zsdigital-home .services-list {
  display: flex;
  flex-direction: column;
}

body.zsdigital-home .service-item {
  display: grid;
  grid-template-columns: 80px 1fr 200px;
  gap: 40px;
  align-items: start;
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.4s ease;
  position: relative;
}

body.zsdigital-home .service-item:first-child { border-top: 1px solid var(--line); }

body.zsdigital-home .service-item:hover {
  background: var(--accent-muted);
  margin: 0 -64px;
  padding-left: 64px;
  padding-right: 64px;
}

body.zsdigital-home .service-num {
  font-size: 12px;
  color: var(--gray-light);
  letter-spacing: 0.1em;
  padding-top: 4px;
}

body.zsdigital-home .service-body h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 20px;
  font-weight: 400;
  margin-bottom: 12px;
  color: var(--ink);
  letter-spacing: 0.04em;
}

body.zsdigital-home .service-body p {
  font-size: 13.5px;
  color: var(--gray);
  line-height: 2;
  font-weight: 300;
  max-width: 480px;
}

body.zsdigital-home .service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
  padding-top: 4px;
}

body.zsdigital-home .service-tag {
  font-size: 11px;
  color: var(--gray);
  letter-spacing: 0.05em;
  padding: 4px 12px;
  border: 1px solid var(--line);
  transition: all 0.3s;
}

body.zsdigital-home .service-item:hover .service-tag {
  border-color: var(--line-warm);
  color: var(--ink-light);
}

/* ===== ABOUT ===== */
body.zsdigital-home .about {
  background: var(--bg-paper);
}

body.zsdigital-home .about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

body.zsdigital-home .about-image {
  position: relative;
  overflow: hidden;
}

body.zsdigital-home .about-image img {
  width: 100%;
  height: 520px;
  object-fit: cover;
  filter: grayscale(30%) contrast(0.95);
}

body.zsdigital-home .about-image::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid var(--line-warm);
  margin: 16px;
  pointer-events: none;
}

body.zsdigital-home .about-content .section-header {
  margin-bottom: 48px;
}

body.zsdigital-home .about-text {
  font-size: 14px;
  color: var(--gray);
  line-height: 2.2;
  font-weight: 300;
  margin-bottom: 48px;
}

body.zsdigital-home .about-features {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

body.zsdigital-home .about-feature {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

body.zsdigital-home .about-feature-line {
  width: 24px;
  height: 1px;
  background: var(--accent-warm);
  margin-top: 14px;
  flex-shrink: 0;
}

body.zsdigital-home .about-feature h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 6px;
  letter-spacing: 0.05em;
}

body.zsdigital-home .about-feature p {
  font-size: 13px;
  color: var(--gray);
  line-height: 1.9;
  font-weight: 300;
}

/* ===== PROCESS ===== */
body.zsdigital-home .process {
  background: var(--ink);
  color: var(--bg-white);
  padding: 140px 64px;
}

body.zsdigital-home .process-inner {
  max-width: 1200px;
  margin: 0 auto;
}

body.zsdigital-home .process-header {
  display: flex;
  align-items: flex-start;
  gap: 80px;
  margin-bottom: 80px;
}

body.zsdigital-home .process-header .section-num { color: rgba(255,255,255,0.3); }
body.zsdigital-home .process-header .section-title { color: var(--bg-white); }

body.zsdigital-home .process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}

body.zsdigital-home .process-steps::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 0; right: 0;
  height: 1px;
  background: rgba(255,255,255,0.1);
}

body.zsdigital-home .process-step {
  padding-right: 40px;
  position: relative;
}

body.zsdigital-home .process-step::before {
  content: '';
  position: absolute;
  top: 16px;
  left: 0;
  width: 9px;
  height: 9px;
  border: 1px solid rgba(255,255,255,0.3);
  background: var(--ink);
  border-radius: 50%;
  z-index: 1;
}

body.zsdigital-home .process-step-num {
  font-size: 11px;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.15em;
  margin-bottom: 32px;
  padding-top: 40px;
}

body.zsdigital-home .process-step h4 {
  font-family: 'Noto Serif SC', serif;
  font-size: 18px;
  font-weight: 400;
  color: var(--bg-white);
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}

body.zsdigital-home .process-step p {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  line-height: 2;
  font-weight: 300;
}

/* ===== PARTNERS ===== */
body.zsdigital-home .partners {
  background: var(--bg-paper);
}
body.zsdigital-home .partners-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
body.zsdigital-home .partner-item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  background: var(--bg-white);
  text-decoration: none;
  transition: background 0.4s ease;
}
body.zsdigital-home .partner-item:hover {
  background: var(--bg-paper);
}
body.zsdigital-home .partner-name {
  font-size: 14px;
  color: var(--ink);
  letter-spacing: 0.05em;
  opacity: 0.8;
}
body.zsdigital-home .partner-item:hover .partner-name {
  opacity: 1;
}

/* ===== CTA ===== */
body.zsdigital-home .cta {
  text-align: center;
  padding: 160px 64px;
  background: var(--bg-white);
}

body.zsdigital-home .cta h2 {
  font-family: 'Noto Serif SC', serif;
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 400;
  line-height: 1.8;
  color: var(--ink);
  margin-bottom: 24px;
  letter-spacing: 0.04em;
}

body.zsdigital-home .cta p {
  font-size: 14px;
  color: var(--gray);
  line-height: 2.2;
  font-weight: 300;
  margin-bottom: 48px;
}

body.zsdigital-home .cta-line {
  width: 40px;
  height: 1px;
  background: var(--accent-warm);
  margin: 0 auto 48px;
}

body.zsdigital-home .cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 16px 48px;
  border: 1px solid var(--ink);
  color: var(--ink);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.12em;
  transition: all 0.4s ease;
  background: transparent;
}

body.zsdigital-home .cta-btn:hover {
  background: var(--ink);
  color: var(--bg-white);
  gap: 24px;
}

/* ===== NON-ACCEPTANCE ===== */
body.zsdigital-home .non-acceptance {
  background: var(--bg-paper);
}
body.zsdigital-home .non-acceptance-intro {
  font-size: 14px;
  color: var(--gray);
  line-height: 2.2;
  font-weight: 300;
  max-width: 640px;
  margin-bottom: 64px;
}
body.zsdigital-home .non-acceptance-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
body.zsdigital-home .non-acceptance-item {
  display: flex;
  gap: 32px;
  padding: 40px;
  background: var(--bg-white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  transition: all 0.4s ease;
}
body.zsdigital-home .non-acceptance-item:hover {
  box-shadow: 0 12px 32px rgba(45,74,94,0.06);
}
body.zsdigital-home .non-acceptance-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-warm);
  font-size: 18px;
  color: var(--accent);
  flex-shrink: 0;
}
body.zsdigital-home .non-acceptance-body h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 20px;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}
body.zsdigital-home .non-acceptance-body p {
  font-size: 13.5px;
  color: var(--gray);
  line-height: 2;
  font-weight: 300;
  max-width: 600px;
}

@media (max-width: 768px) {
  body.zsdigital-home .non-acceptance-item {
    flex-direction: column;
    gap: 20px;
    padding: 28px;
  }
}

/* ===== FOOTER ===== */
body.zsdigital-home footer {
  background: var(--ink);
  padding: 80px 64px 40px;
}

body.zsdigital-home .footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

body.zsdigital-home .footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 64px;
  margin-bottom: 80px;
}

body.zsdigital-home .footer-brand {
  font-size: 15px;
  font-weight: 500;
  color: var(--bg-white);
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}

body.zsdigital-home .footer-brand span { color: var(--accent-warm); }

body.zsdigital-home .footer-desc {
  font-size: 13px;
  color: rgba(255,255,255,0.4);
  line-height: 2;
  font-weight: 300;
  max-width: 300px;
}

body.zsdigital-home .footer-col h4 {
  font-size: 11px;
  color: rgba(255,255,255,0.3);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 24px;
  font-weight: 400;
}

body.zsdigital-home .footer-col ul { list-style: none; }
body.zsdigital-home .footer-col li { margin-bottom: 12px; }
body.zsdigital-home .footer-col a {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  transition: color 0.3s;
  font-weight: 300;
}
body.zsdigital-home .footer-col a:hover { color: var(--bg-white); }

body.zsdigital-home .footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

body.zsdigital-home .footer-bottom p {
  font-size: 11px;
  color: rgba(255,255,255,0.3);
  letter-spacing: 0.05em;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  body.zsdigital-home .hero { grid-template-columns: 1fr; }
  body.zsdigital-home .hero-right { display: none; }
  body.zsdigital-home .hero-left { padding: 120px 40px 80px; }
  body.zsdigital-home .hero-stats { grid-template-columns: repeat(2, 1fr); }
  body.zsdigital-home .hero-stat:nth-child(2) { border-right: none; }
  body.zsdigital-home .hero-stat { border-bottom: 1px solid var(--line); }
  body.zsdigital-home .about-grid { grid-template-columns: 1fr; }
  body.zsdigital-home .process-steps { grid-template-columns: repeat(2, 1fr); gap: 40px 0; }
  body.zsdigital-home .process-steps::before { display: none; }
  body.zsdigital-home .partners-grid { grid-template-columns: repeat(2, 1fr); }
  body.zsdigital-home .footer-top { grid-template-columns: 1fr 1fr; }
  body.zsdigital-home .service-item { grid-template-columns: 60px 1fr; }
  body.zsdigital-home .service-tags { display: none; }
}

@media (max-width: 768px) {
  body.zsdigital-home nav { padding: 0 24px; }
  body.zsdigital-home .nav-links { display: none; }
  body.zsdigital-home .section { padding: 80px 24px; }
  body.zsdigital-home .philosophy { padding: 100px 24px; }
  body.zsdigital-home .process { padding: 100px 24px; }
  body.zsdigital-home .cta { padding: 100px 24px; }
  body.zsdigital-home .partners-grid { grid-template-columns: 1fr; }
  body.zsdigital-home footer { padding: 60px 24px 32px; }
  body.zsdigital-home .footer-top { grid-template-columns: 1fr; gap: 40px; }
  body.zsdigital-home .footer-bottom { flex-direction: column; gap: 16px; }
  body.zsdigital-home .process-steps { grid-template-columns: 1fr; }
  body.zsdigital-home .section-header { flex-direction: column; gap: 16px; }
  body.zsdigital-home .hero-vertical { display: none; }
}

/* ===== SCROLL REVEAL ===== */
body.zsdigital-home .reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 1s cubic-bezier(0.16, 1, 0.3, 1);
}
body.zsdigital-home .reveal.visible {
  opacity: 1;
  transform: translateY(0);
}