/* ============================================================
   Attribute · black & white editorial venture site
   ============================================================ */

:root {
  --black: #0a0a0a;
  --ink: #141414;
  --white: #ffffff;
  --paper: #f7f6f3;
  --muted: #6b6b6b;
  --line: #e4e2dd;
  --line-dark: #2a2a2a;
  --muted-inv: #9a9a9a;
  --maxw: 1180px;
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }

/* ---------- Shared ---------- */
.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow-inv { color: var(--muted-inv); }

.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 140px 32px;
}

.section-head { max-width: 720px; margin-bottom: 72px; }
.section-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 18px 0 22px;
}
.section-sub {
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 560px;
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 32px;
  background: rgba(247, 246, 243, 0.82);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--serif);
  font-size: 1.35rem;
  letter-spacing: -0.01em;
}
.brand-mark { font-size: 0.85em; }
.nav-links {
  display: flex;
  gap: 36px;
  font-size: 0.9rem;
  font-weight: 500;
}
.nav-links a { position: relative; color: var(--ink); opacity: 0.75; transition: opacity 0.2s; }
.nav-links a:hover { opacity: 1; }
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -5px;
  width: 0; height: 1px;
  background: var(--ink);
  transition: width 0.25s ease;
}
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 9px 18px;
  border: 1px solid var(--ink);
  border-radius: 100px;
  transition: background 0.2s, color 0.2s;
}
.nav-cta:hover { background: var(--ink); color: var(--white); }

/* ---------- Hero ---------- */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 120px 32px 90px;
}
.hero-title {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(2.6rem, 7vw, 5.4rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  max-width: 15ch;
  margin: 26px 0 34px;
}
.hero-lede {
  font-size: 1.22rem;
  color: var(--muted);
  max-width: 620px;
  line-height: 1.65;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin: 44px 0 76px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 14px 30px;
  border-radius: 100px;
  transition: transform 0.15s ease, background 0.2s, color 0.2s;
}
.btn:active { transform: translateY(1px); }
.btn-solid { background: var(--ink); color: var(--white); }
.btn-solid:hover { background: #000; }
.btn-ghost { border: 1px solid var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--white); }

.hero-meta {
  display: flex;
  gap: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}
.hero-meta div { display: flex; flex-direction: column; gap: 4px; }
.hero-meta .num {
  font-family: var(--serif);
  font-size: 2.4rem;
  font-weight: 400;
  line-height: 1;
}
.hero-meta .lbl {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- Marquee ---------- */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--ink);
  color: var(--white);
  padding: 20px 0;
}
.marquee-track {
  display: inline-flex;
  gap: 40px;
  white-space: nowrap;
  align-items: center;
  animation: scroll 26s linear infinite;
  font-family: var(--serif);
  font-size: 1.5rem;
  padding-left: 40px;
}
.marquee-track span:not(:nth-child(even)) { opacity: 0.95; }
.marquee-track span:nth-child(even) { opacity: 0.4; font-size: 0.8em; }
@keyframes scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- Approach cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.card {
  background: var(--paper);
  padding: 44px 40px 48px;
  transition: background 0.25s;
}
.card:hover { background: var(--white); }
.card-no {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  letter-spacing: 0.1em;
}
.card h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.6rem;
  margin: 18px 0 12px;
  letter-spacing: -0.01em;
}
.card p { color: var(--muted); font-size: 1rem; }

/* ---------- Portfolio (dark) ---------- */
.section-dark {
  max-width: none;
  background: var(--black);
  color: var(--white);
}
.section-dark .section-head,
.section-dark .portfolio {
  max-width: var(--maxw);
  margin-left: auto;
  margin-right: auto;
}
.section-dark .section-title { color: var(--white); }
.section-dark .section-sub { color: var(--muted-inv); }

.portfolio {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
}
.p-item a {
  display: block;
  height: 100%;
  background: var(--black);
  padding: 38px 36px 34px;
  transition: background 0.25s;
}
.p-item a:hover { background: #161616; }
.p-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 18px;
}
.p-name {
  font-family: var(--serif);
  font-size: 1.7rem;
  font-weight: 400;
  letter-spacing: -0.01em;
}
.p-cat {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted-inv);
  white-space: nowrap;
}
.p-desc { color: #c9c9c9; font-size: 0.98rem; margin-bottom: 26px; }
.p-link {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--white);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.p-link .arrow { transition: transform 0.2s ease; display: inline-block; }
.p-item a:hover .arrow { transform: translate(3px, -3px); }

/* ---------- Ethos ---------- */
.ethos { text-align: center; padding: 130px 32px; }
.ethos blockquote {
  max-width: 900px;
  margin: 0 auto;
}
.ethos p {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(1.8rem, 4.6vw, 3.1rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
}

/* ---------- Contact ---------- */
.contact { text-align: center; }
.contact-inner { max-width: 720px; margin: 0 auto; }
.contact-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2rem, 5vw, 3.2rem);
  letter-spacing: -0.02em;
  margin: 18px 0 16px;
}
.contact-sub { color: var(--muted); font-size: 1.1rem; margin-bottom: 40px; }
.contact-mail {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  border-bottom: 2px solid var(--ink);
  padding-bottom: 4px;
  transition: opacity 0.2s;
}
.contact-mail:hover { opacity: 0.6; }

/* ---------- Footer ---------- */
.footer {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 48px 32px 60px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-brand {
  font-family: var(--serif);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-copy { font-size: 0.85rem; color: var(--muted); }
.footer-links { display: flex; gap: 26px; font-size: 0.85rem; }
.footer-links a { color: var(--muted); transition: color 0.2s; }
.footer-links a:hover { color: var(--ink); }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .section { padding: 96px 24px; }
  .hero { padding: 80px 24px 60px; }
  .nav-links { display: none; }
  .cards { grid-template-columns: 1fr; }
  .portfolio { grid-template-columns: 1fr; }
  .hero-meta { gap: 40px; }
  .footer { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) {
  .nav { padding: 16px 20px; }
  .section { padding: 80px 20px; }
  .hero { padding: 60px 20px 50px; }
  .hero-meta .num { font-size: 2rem; }
  .card { padding: 34px 28px; }
  .p-item a { padding: 30px 26px; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .marquee-track { animation: none; }
  html { scroll-behavior: auto; }
}