/* ================================================================
   隐牛科技 · YINNIU — editorial design system
   Palette: warm parchment · deep ink · burnished copper · seal red
   ================================================================ */

:root {
  --cream:       #F1EBDC;
  --cream-2:     #E8DEC6;
  --cream-3:     #DCCFAF;
  --ink:         #17130E;
  --ink-2:       #2A241B;
  --ink-3:       #4A4032;
  --muted:       #7A7060;
  --copper:      #A25520;
  --copper-deep: #7A3E14;
  --seal:        #8C2A24;
  --line:        rgba(23, 19, 14, 0.14);
  --line-soft:   rgba(23, 19, 14, 0.08);

  --f-display:   "Fraunces", "Noto Serif SC", serif;
  --f-serif-cn:  "Noto Serif SC", "Fraunces", serif;
  --f-sans:      "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
  --f-mono:      "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --wrap:        min(1400px, 92vw);
  --gutter:      clamp(1.25rem, 3vw, 3rem);

  --ease:        cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--f-sans);
  background: var(--cream);
  color: var(--ink);
  line-height: 1.55;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  position: relative;
}

::selection {
  background: var(--ink);
  color: var(--cream);
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { list-style: none; }
em { font-style: italic; font-family: var(--f-display); font-weight: 400; }

/* Paper grain overlay */
.grain {
  position: fixed; inset: 0;
  pointer-events: none; z-index: 200;
  opacity: 0.45;
  mix-blend-mode: multiply;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(162,85,32,0.05) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(23,19,14,0.04) 0%, transparent 50%),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='300' height='300'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.09  0 0 0 0 0.07  0 0 0 0 0.05  0 0 0 0.35 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* ========== NAVIGATION ========== */

.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.1rem var(--gutter);
  background: rgba(241, 235, 220, 0.82);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  border-bottom: 1px solid var(--line-soft);
  transition: padding 0.4s var(--ease);
}

.nav.is-scrolled { padding: 0.7rem var(--gutter); }

.nav__logo { display: flex; align-items: center; gap: 0.75rem; }

.nav__logo-mark {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  background: var(--ink);
  color: var(--cream);
  font-family: var(--f-serif-cn);
  font-weight: 600;
  font-size: 1.25rem;
  border-radius: 3px;
  position: relative;
}
.nav__logo-mark::after {
  content: "";
  position: absolute;
  inset: 3px;
  border: 1px solid rgba(241,235,220,0.35);
  border-radius: 2px;
  pointer-events: none;
}

.nav__logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.nav__logo-cn { font-family: var(--f-serif-cn); font-weight: 600; font-size: 1rem; letter-spacing: 0.02em; }
.nav__logo-en { font-family: var(--f-mono); font-size: 0.68rem; letter-spacing: 0.18em; color: var(--muted); text-transform: uppercase; }

.nav__menu { display: flex; gap: 2.2rem; }
.nav__menu a {
  position: relative;
  font-size: 0.9rem;
  font-weight: 400;
  display: inline-flex; align-items: baseline; gap: 0.35rem;
  padding: 0.3rem 0;
  transition: color 0.3s var(--ease);
}
.nav__menu a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--copper);
  transition: width 0.4s var(--ease);
}
.nav__menu a:hover { color: var(--copper); }
.nav__menu a:hover::after { width: 100%; }
.nav__num {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.1em;
}

.nav__cta {
  display: inline-flex; align-items: center; gap: 0.55rem;
  padding: 0.6rem 1.1rem;
  background: var(--ink);
  color: var(--cream);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  border-radius: 2px;
  transition: background 0.3s var(--ease), transform 0.3s var(--ease);
}
.nav__cta:hover { background: var(--copper); transform: translateY(-1px); }
.nav__cta svg { transition: transform 0.4s var(--ease); }
.nav__cta:hover svg { transform: translate(2px, -2px); }

@media (max-width: 960px) {
  .nav__menu { display: none; }
}

/* ========== HERO ========== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 9rem var(--gutter) 5rem;
  overflow: hidden;
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 30% 40%, rgba(162,85,32,0.08), transparent 60%),
    radial-gradient(ellipse at 70% 80%, rgba(140,42,36,0.06), transparent 55%),
    linear-gradient(180deg, var(--cream) 0%, var(--cream-2) 100%);
  z-index: -2;
}

.hero__watermark {
  position: absolute;
  right: -5%; top: 50%;
  transform: translateY(-50%);
  font-family: var(--f-serif-cn);
  font-size: clamp(30rem, 68vw, 62rem);
  font-weight: 900;
  color: var(--ink);
  opacity: 0.035;
  line-height: 0.85;
  z-index: -1;
  pointer-events: none;
  user-select: none;
  animation: breathe 14s ease-in-out infinite;
}

@keyframes breathe {
  0%, 100% { transform: translateY(-50%) scale(1); opacity: 0.035; }
  50%      { transform: translateY(-51%) scale(1.012); opacity: 0.045; }
}

.hero__corner {
  position: absolute;
  display: flex; align-items: center; gap: 0.7rem;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--muted);
  text-transform: uppercase;
  opacity: 0;
  animation: fadeUp 1.2s var(--ease) 0.4s forwards;
}
.hero__corner--tl { top: 6.5rem;     left: var(--gutter); }
.hero__corner--tr { top: 6.5rem;     right: var(--gutter); }
.hero__corner--bl { bottom: 3.5rem;  left: var(--gutter); }
.hero__corner--br { bottom: 3.5rem;  right: var(--gutter); }

.dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--copper);
  display: inline-block;
}

.hero__body {
  position: relative;
  max-width: 1100px;
  width: 100%;
  text-align: center;
}

.hero__eyebrow {
  display: flex; align-items: center; justify-content: center; gap: 1rem;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.35em;
  color: var(--ink-3);
  text-transform: uppercase;
  margin-bottom: 2.2rem;
  opacity: 0;
  animation: fadeUp 1s var(--ease) 0.2s forwards;
}
.hero__eyebrow .line {
  width: clamp(30px, 8vw, 80px);
  height: 1px;
  background: var(--ink-3);
}

.hero__title {
  font-family: var(--f-serif-cn);
  font-weight: 600;
  font-size: clamp(4.5rem, 14vw, 12rem);
  line-height: 0.95;
  letter-spacing: -0.01em;
  display: flex; align-items: center; justify-content: center; gap: 0.08em;
  margin-bottom: 2rem;
  color: var(--ink);
}
.hero__title-char {
  display: inline-block;
  opacity: 0;
  transform: translateY(40px) rotate(-2deg);
  animation: charIn 1s var(--ease) forwards;
}
.hero__title-char:nth-child(1) { animation-delay: 0.30s; }
.hero__title-char:nth-child(2) { animation-delay: 0.42s; }
.hero__title-char:nth-child(3) { animation-delay: 0.54s; }
.hero__title-char:nth-child(4) { animation-delay: 0.66s; }
.hero__title-char:nth-child(5) { animation-delay: 0.78s; }

.hero__title-sep {
  font-family: var(--f-display);
  font-weight: 300;
  font-size: 0.6em;
  color: var(--copper);
  padding: 0 0.1em;
  transform: translateY(-0.15em);
  opacity: 0.8;
}

@keyframes charIn {
  0%   { opacity: 0; transform: translateY(40px) rotate(-2deg); }
  100% { opacity: 1; transform: translateY(0) rotate(0); }
}

.hero__latin {
  font-family: var(--f-display);
  font-size: clamp(1.1rem, 1.5vw, 1.4rem);
  font-weight: 400;
  color: var(--ink-3);
  letter-spacing: 0.02em;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 1s var(--ease) 1.0s forwards;
}
.hero__latin em { font-style: italic; color: var(--copper); font-weight: 500; }

.hero__lede {
  max-width: 38em;
  margin: 0 auto 2.8rem;
  font-size: 1.02rem;
  font-weight: 300;
  line-height: 1.9;
  color: var(--ink-3);
  opacity: 0;
  animation: fadeUp 1s var(--ease) 1.15s forwards;
}

.hero__actions {
  display: flex; justify-content: center; gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 1s var(--ease) 1.3s forwards;
}

.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  padding: 0.95rem 1.8rem;
  font-size: 0.92rem;
  letter-spacing: 0.05em;
  border-radius: 2px;
  transition: all 0.35s var(--ease);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--ink);
  color: var(--cream);
}
.btn--primary::before {
  content: "";
  position: absolute; inset: 0;
  background: var(--copper);
  transform: translateY(101%);
  transition: transform 0.4s var(--ease);
  z-index: 0;
}
.btn--primary > * { position: relative; z-index: 1; }
.btn--primary:hover::before { transform: translateY(0); }
.btn__arrow { transition: transform 0.4s var(--ease); }
.btn--primary:hover .btn__arrow { transform: translateX(4px); }

.btn--ghost {
  border: 1px solid var(--ink);
  color: var(--ink);
}
.btn--ghost:hover { background: var(--ink); color: var(--cream); }

.hero__scroll {
  display: inline-flex; flex-direction: column; align-items: center; gap: 0.4rem;
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  color: var(--muted);
  transition: color 0.3s var(--ease);
}
.hero__scroll:hover { color: var(--copper); }
.hero__scroll svg { animation: scrollBob 2.4s ease-in-out infinite; }
@keyframes scrollBob {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(6px); }
}

/* Marquee band at bottom of hero */
.marquee {
  position: absolute;
  bottom: 0;
  left: 0; right: 0;
  overflow: hidden;
  padding: 0.8rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--cream-2);
  opacity: 0;
  animation: fadeUp 1s var(--ease) 1.6s forwards;
}
.marquee__track {
  display: inline-flex;
  gap: 2.2rem;
  white-space: nowrap;
  font-family: var(--f-mono);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-3);
  animation: marquee 40s linear infinite;
}
.marquee__track span { padding-left: 2.2rem; }
.marquee__dot { color: var(--copper); }
@keyframes marquee {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@keyframes fadeUp {
  0%   { opacity: 0; transform: translateY(20px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* ========== SECTION HEAD ========== */

.section-head {
  display: flex; align-items: center; gap: 1.3rem;
  margin-bottom: 3.5rem;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.section-head__num {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 400;
  font-size: 2rem;
  color: var(--copper);
  line-height: 1;
}
.section-head__line {
  flex: 1; height: 1px;
  max-width: 120px;
  background: var(--line);
}
.section-head--light { color: rgba(241,235,220,0.7); }
.section-head--light .section-head__num { color: var(--copper); }
.section-head--light .section-head__line { background: rgba(241,235,220,0.2); max-width: 80px; }

/* ========== PHILOSOPHY ========== */

.philosophy {
  padding: 9rem var(--gutter) 10rem;
  position: relative;
}

.philosophy__grid {
  width: var(--wrap);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 6vw, 6rem);
  align-items: start;
}

.philosophy__title {
  font-family: var(--f-serif-cn);
  font-weight: 500;
  font-size: clamp(3.5rem, 7.5vw, 6.5rem);
  line-height: 1.05;
  color: var(--ink);
  letter-spacing: 0.02em;
  margin-bottom: 1.5rem;
}
.philosophy__title--accent {
  color: var(--copper);
  font-weight: 600;
  font-style: normal;
  position: relative;
  display: inline-block;
}
.philosophy__title--accent::after {
  content: "";
  position: absolute;
  left: -0.1em; right: 0;
  bottom: 0.04em;
  height: 8px;
  background: linear-gradient(90deg, rgba(162,85,32,0.2), transparent);
  z-index: -1;
}

.philosophy__latin {
  font-family: var(--f-display);
  font-size: 1rem;
  font-weight: 400;
  color: var(--muted);
  font-style: italic;
}

.philosophy__body p {
  font-size: 1.04rem;
  line-height: 2;
  margin-bottom: 1.5rem;
  color: var(--ink-2);
  font-weight: 300;
}
.philosophy__body strong {
  font-weight: 500;
  color: var(--ink);
  border-bottom: 1px solid var(--copper);
  padding-bottom: 1px;
}
.philosophy__lead {
  font-family: var(--f-serif-cn);
  font-size: 1.4rem !important;
  font-weight: 400;
  line-height: 1.8 !important;
  color: var(--ink) !important;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 2rem !important;
}

.philosophy__seal {
  display: flex; align-items: center; gap: 1.5rem;
  margin-top: 2.5rem;
}
.seal {
  width: 86px; height: 86px;
  background: var(--seal);
  color: var(--cream);
  display: grid;
  grid-template-columns: 1fr 1fr;
  place-items: center;
  font-family: var(--f-serif-cn);
  font-weight: 700;
  font-size: 1.6rem;
  border-radius: 3px;
  position: relative;
  transform: rotate(-4deg);
  box-shadow:
    0 1px 0 rgba(23,19,14,0.15),
    inset 0 0 0 4px var(--seal),
    inset 0 0 0 5px rgba(241,235,220,0.3);
  letter-spacing: -0.05em;
}
.seal::after {
  content: "";
  position: absolute;
  inset: -2px;
  border: 1px solid rgba(140,42,36,0.4);
  border-radius: 4px;
  opacity: 0.6;
}

.philosophy__signature {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}
.philosophy__sig-cn {
  font-family: var(--f-serif-cn);
  font-size: 1.1rem;
  letter-spacing: 0.3em;
  color: var(--ink);
  font-weight: 500;
}
.philosophy__sig-en {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--muted);
  margin-top: 0.35rem;
}

@media (max-width: 860px) {
  .philosophy__grid { grid-template-columns: 1fr; }
}

/* ========== SERVICES ========== */

.services {
  padding: 7rem var(--gutter) 10rem;
  background: linear-gradient(180deg, var(--cream-2) 0%, var(--cream) 100%);
  position: relative;
  border-top: 1px solid var(--line-soft);
}

.services .section-head,
.services__intro,
.services__pillars {
  width: var(--wrap);
  margin-left: auto; margin-right: auto;
}

.services__intro {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: end;
  margin-bottom: 5rem;
}
.services__heading {
  font-family: var(--f-serif-cn);
  font-weight: 500;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--ink);
}
.services__heading em {
  color: var(--copper);
  font-family: var(--f-serif-cn);
  font-style: normal;
  font-weight: 400;
}
.services__intro-text {
  font-size: 1rem;
  line-height: 1.95;
  color: var(--ink-3);
  max-width: 38em;
}
.services__intro-text strong {
  color: var(--copper-deep);
  font-weight: 600;
}

.services__pillars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.pillar {
  background: var(--cream);
  border: 1px solid var(--line);
  padding: 3rem 2.5rem;
  position: relative;
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease);
}
.pillar::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 64px; height: 64px;
  border-top: 1px solid var(--copper);
  border-left: 1px solid var(--copper);
  transition: all 0.4s var(--ease);
}
.pillar::after {
  content: "";
  position: absolute;
  bottom: 0; right: 0;
  width: 64px; height: 64px;
  border-bottom: 1px solid var(--copper);
  border-right: 1px solid var(--copper);
  transition: all 0.4s var(--ease);
}
.pillar:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -20px rgba(23,19,14,0.15);
}
.pillar:hover::before, .pillar:hover::after {
  width: 96px; height: 96px;
}

.pillar--alt { background: var(--ink); color: var(--cream); }
.pillar--alt::before, .pillar--alt::after { border-color: var(--copper); }
.pillar--alt .pillar__num { color: var(--cream-3); }
.pillar--alt .pillar__title-cn { color: var(--cream); }
.pillar--alt .pillar__title-en { color: var(--copper); }
.pillar--alt .pillar__lede { color: rgba(241,235,220,0.75); }
.pillar--alt .pillar__list li { border-color: rgba(241,235,220,0.12); }
.pillar--alt .pillar__list strong { color: var(--cream); }
.pillar--alt .pillar__list span { color: rgba(241,235,220,0.55); }
.pillar--alt .pillar__idx { color: var(--copper); }
.pillar--alt .pillar__foot { color: rgba(241,235,220,0.45); border-color: rgba(241,235,220,0.12); }

.pillar__head {
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}
.pillar--alt .pillar__head { border-color: rgba(241,235,220,0.12); }

.pillar__num {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}
.pillar__title { display: flex; flex-direction: column; gap: 0.25rem; }
.pillar__title-cn {
  font-family: var(--f-serif-cn);
  font-weight: 600;
  font-size: clamp(2rem, 3.2vw, 2.6rem);
  color: var(--ink);
  letter-spacing: 0.02em;
}
.pillar__title-en {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 400;
  font-size: 1.1rem;
  color: var(--copper);
}

.pillar__lede {
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--ink-3);
  margin-bottom: 2rem;
}

.pillar__list li {
  display: flex; gap: 1.2rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line-soft);
  transition: padding-left 0.35s var(--ease);
}
.pillar__list li:hover { padding-left: 0.5rem; }
.pillar__list li:last-child { padding-bottom: 0; }
.pillar__idx {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 300;
  font-size: 1.2rem;
  color: var(--copper);
  min-width: 2ch;
}
.pillar__list strong {
  display: block;
  font-family: var(--f-serif-cn);
  font-weight: 500;
  font-size: 1.1rem;
  color: var(--ink);
  margin-bottom: 0.15rem;
  letter-spacing: 0.02em;
}
.pillar__list span {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.5;
}

.pillar__foot {
  margin-top: 2rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line-soft);
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  color: var(--muted);
}

@media (max-width: 900px) {
  .services__intro { grid-template-columns: 1fr; gap: 2rem; }
  .services__pillars { grid-template-columns: 1fr; }
}

/* ========== CAPABILITIES ========== */

.capabilities {
  padding: 8rem var(--gutter) 9rem;
}
.capabilities > * { width: var(--wrap); margin-left: auto; margin-right: auto; }

.capabilities__heading {
  font-family: var(--f-serif-cn);
  font-weight: 500;
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  line-height: 1.2;
  color: var(--ink);
  letter-spacing: 0.01em;
  margin-bottom: 4rem;
  max-width: 20ch;
}
.capabilities__heading em {
  color: var(--copper);
  font-family: var(--f-serif-cn);
  font-style: normal;
  font-weight: 400;
}

.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.cap {
  background: var(--cream);
  padding: 3rem 2.2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: background 0.4s var(--ease);
  position: relative;
  overflow: hidden;
}
.cap::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 2px;
  background: var(--copper);
  transform: translateX(-101%);
  transition: transform 0.5s var(--ease);
}
.cap:hover { background: var(--cream-2); }
.cap:hover::before { transform: translateX(0); }
.cap:hover .cap__icon { color: var(--copper); transform: rotate(-4deg); }

.cap__icon {
  width: 44px; height: 44px;
  color: var(--ink);
  transition: color 0.4s var(--ease), transform 0.5s var(--ease);
  margin-bottom: 0.5rem;
}
.cap__icon svg { width: 100%; height: 100%; }

.cap h4 {
  font-family: var(--f-serif-cn);
  font-weight: 600;
  font-size: 1.4rem;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.cap p {
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.65;
}

@media (max-width: 900px) { .cap-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .cap-grid { grid-template-columns: 1fr; } }

/* ========== PROCESS ========== */

.process {
  padding: 8rem var(--gutter) 9rem;
  background: linear-gradient(180deg, var(--cream) 0%, var(--cream-3) 100%);
  border-top: 1px solid var(--line-soft);
  position: relative;
}
.process > * { width: var(--wrap); margin-left: auto; margin-right: auto; }

.process__head {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: end;
  margin-bottom: 4.5rem;
}
.process__heading {
  font-family: var(--f-serif-cn);
  font-weight: 500;
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  line-height: 1.15;
  color: var(--ink);
}
.process__heading em {
  color: var(--copper);
  font-family: var(--f-serif-cn);
  font-style: normal;
  font-weight: 400;
}
.process__head p {
  font-size: 1rem;
  color: var(--ink-3);
  line-height: 1.9;
  max-width: 34em;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  counter-reset: step;
}

.step {
  background: rgba(241,235,220,0.6);
  border: 1px solid var(--line);
  padding: 2.5rem 2rem;
  position: relative;
  transition: all 0.45s var(--ease);
}
.step:hover {
  background: var(--ink);
  color: var(--cream);
  transform: translateY(-6px);
}
.step:hover .step__num { color: var(--copper); }
.step:hover .step__label { color: rgba(241,235,220,0.6); }
.step:hover h3 { color: var(--cream); }
.step:hover p { color: rgba(241,235,220,0.75); }

.step__num {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 300;
  font-size: 3.2rem;
  color: var(--copper);
  line-height: 1;
  margin-bottom: 1.2rem;
  transition: color 0.4s var(--ease);
}
.step__label {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  color: var(--muted);
  margin-bottom: 0.8rem;
  transition: color 0.4s var(--ease);
}
.step h3 {
  font-family: var(--f-serif-cn);
  font-weight: 600;
  font-size: 1.4rem;
  color: var(--ink);
  margin-bottom: 0.8rem;
  letter-spacing: 0.02em;
  transition: color 0.4s var(--ease);
}
.step p {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--ink-3);
  transition: color 0.4s var(--ease);
}

@media (max-width: 980px) {
  .process__head { grid-template-columns: 1fr; gap: 1.5rem; }
  .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* ========== STATS ========== */

.stats {
  padding: 5rem var(--gutter);
  background: var(--ink);
  color: var(--cream);
  position: relative;
  overflow: hidden;
}
.stats::before {
  content: "隱牛";
  position: absolute;
  right: -0.15em; top: 50%;
  transform: translateY(-50%);
  font-family: var(--f-serif-cn);
  font-weight: 900;
  font-size: clamp(16rem, 34vw, 30rem);
  color: rgba(241,235,220,0.035);
  line-height: 0.8;
  pointer-events: none;
  letter-spacing: -0.05em;
}

.stats__inner {
  width: var(--wrap);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 2.5rem;
  position: relative;
}

.stat { text-align: center; }
.stat__num {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: clamp(3.5rem, 7vw, 6rem);
  line-height: 1;
  color: var(--cream);
  letter-spacing: -0.02em;
  margin-bottom: 0.8rem;
}
.stat__label {
  font-family: var(--f-serif-cn);
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--cream);
  letter-spacing: 0.1em;
  margin-bottom: 0.3rem;
}
.stat__en {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--cream-3);
  text-transform: uppercase;
  opacity: 0.6;
}
.stat__divider {
  width: 1px; height: 70px;
  background: linear-gradient(180deg, transparent, rgba(241,235,220,0.25), transparent);
}

@media (max-width: 900px) {
  .stats__inner { grid-template-columns: 1fr 1fr; gap: 3rem 1rem; }
  .stat__divider { display: none; }
}

/* ========== CONTACT ========== */

.contact {
  padding: 9rem var(--gutter) 10rem;
  background: var(--ink);
  color: var(--cream);
  position: relative;
  overflow: hidden;
}
.contact > * { width: var(--wrap); margin-left: auto; margin-right: auto; position: relative; }

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact__lead {
  position: relative;
  padding-right: 2rem;
}
.contact__title {
  font-family: var(--f-serif-cn);
  font-weight: 500;
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  line-height: 1.15;
  color: var(--cream);
  margin-bottom: 1.8rem;
}
.contact__title em {
  color: var(--copper);
  font-family: var(--f-serif-cn);
  font-style: normal;
  font-weight: 400;
}
.contact__lead p {
  font-size: 1rem;
  line-height: 1.95;
  color: rgba(241,235,220,0.7);
  max-width: 32em;
}

.contact__watermark {
  position: absolute;
  left: -0.08em;
  bottom: -10%;
  font-family: var(--f-serif-cn);
  font-weight: 900;
  font-size: clamp(8rem, 16vw, 16rem);
  color: rgba(241,235,220,0.04);
  line-height: 0.85;
  pointer-events: none;
  letter-spacing: -0.04em;
  z-index: 0;
}

.contact__cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.contact-card {
  background: rgba(241,235,220,0.04);
  border: 1px solid rgba(241,235,220,0.12);
  padding: 2rem 1.8rem;
  transition: all 0.45s var(--ease);
  position: relative;
  overflow: hidden;
}
.contact-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(162,85,32,0.08) 100%);
  opacity: 0;
  transition: opacity 0.5s var(--ease);
  pointer-events: none;
}
.contact-card:hover {
  background: rgba(241,235,220,0.07);
  border-color: var(--copper);
  transform: translateY(-3px);
}
.contact-card:hover::after { opacity: 1; }
.contact-card--wide { grid-column: span 2; }

.contact-card__label {
  display: flex; align-items: center; gap: 0.75rem;
  margin-bottom: 1.2rem;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  color: rgba(241,235,220,0.5);
  text-transform: uppercase;
}
.contact-card__num {
  color: var(--copper);
  font-family: var(--f-display);
  font-style: italic;
  font-size: 1.1rem;
}
.contact-card__value {
  display: block;
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(1.8rem, 2.5vw, 2.4rem);
  color: var(--cream);
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
  transition: color 0.4s var(--ease);
  line-height: 1.2;
}
.contact-card:hover .contact-card__value { color: var(--copper); }
.contact-card__value--small {
  font-family: var(--f-serif-cn);
  font-weight: 500;
  font-size: clamp(1rem, 1.4vw, 1.25rem);
  line-height: 1.6;
  letter-spacing: 0.02em;
}
.contact-card__meta {
  font-size: 0.82rem;
  color: rgba(241,235,220,0.45);
  line-height: 1.6;
  font-family: var(--f-sans);
}

@media (max-width: 900px) {
  .contact__grid { grid-template-columns: 1fr; gap: 3rem; }
  .contact__cards { grid-template-columns: 1fr; }
  .contact-card--wide { grid-column: span 1; }
}

/* ========== FOOTER ========== */

.footer {
  background: var(--cream);
  color: var(--ink);
  padding: 5rem var(--gutter) 2rem;
  border-top: 1px solid var(--line);
}
.footer__top, .footer__bottom {
  width: var(--wrap);
  margin: 0 auto;
}

.footer__top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.4fr;
  gap: 3rem;
  padding-bottom: 3.5rem;
}

.footer__brand { display: flex; gap: 1rem; align-items: flex-start; }
.footer__mark {
  width: 56px; height: 56px;
  background: var(--ink);
  color: var(--cream);
  display: grid; place-items: center;
  font-family: var(--f-serif-cn);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.04em;
  grid-template-columns: 1fr 1fr;
  border-radius: 3px;
  flex-shrink: 0;
}
.footer__brand-text { padding-top: 0.15rem; }
.footer__brand-cn {
  font-family: var(--f-serif-cn);
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.03em;
}
.footer__brand-en {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-top: 0.25rem;
  text-transform: uppercase;
}

.footer__pillar h5 {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 1.3rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--line);
  font-weight: 500;
}
.footer__pillar ul { display: flex; flex-direction: column; gap: 0.7rem; }
.footer__pillar a {
  font-size: 0.92rem;
  color: var(--ink-2);
  transition: color 0.3s var(--ease);
}
.footer__pillar a:hover { color: var(--copper); }
.footer__addr {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.7;
  margin-top: 0.3rem;
  font-family: var(--f-serif-cn);
}

.footer__rule {
  width: var(--wrap);
  margin: 0 auto;
  height: 1px;
  background: var(--line);
}

.footer__bottom {
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--muted);
}
.footer__legal { display: flex; gap: 0.8rem; align-items: center; }
.footer__legal a:hover { color: var(--copper); }
.footer__legal .dot {
  width: 3px; height: 3px;
  background: var(--muted);
}
.footer__tagline {
  font-family: var(--f-serif-cn);
  letter-spacing: 0.3em;
  color: var(--ink);
  font-weight: 500;
}

@media (max-width: 900px) {
  .footer__top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .footer__top { grid-template-columns: 1fr; gap: 2rem; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
}

/* ========== REVEAL ANIMATIONS ========== */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 1s var(--ease), transform 1s var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}