@font-face {
  font-family: "Instrument Sans";
  src: url("assets/fonts/instrument-sans-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "Newsreader";
  src: url("assets/fonts/newsreader-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 300 600;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  color-scheme: dark;
  --ink-950: oklch(10.5% 0.022 230);
  --ink-925: oklch(12.5% 0.026 230);
  --ink-900: oklch(15.5% 0.03 230);
  --ink-850: oklch(20% 0.035 230);
  --paper: oklch(93.5% 0.019 78);
  --paper-soft: oklch(80% 0.024 230);
  --paper-muted: oklch(68% 0.025 230);
  --accent: oklch(66% 0.135 256);
  --accent-soft: oklch(78% 0.085 256);
  --rule: oklch(34% 0.028 230);
  --rule-strong: oklch(46% 0.035 230);
  --font-sans: "Instrument Sans", "Avenir Next", "PingFang TC", "Noto Sans TC", sans-serif;
  --font-display: "Newsreader", "Iowan Old Style", "Baskerville", "Songti TC", "Noto Serif TC", serif;
  --shell: 1480px;
  --gutter: clamp(1.25rem, 4vw, 4.25rem);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-toggle: cubic-bezier(0.65, 0, 0.35, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--ink-950);
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--paper);
  background: var(--ink-950);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.65;
  font-kerning: normal;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
img, svg { display: block; }

.shell {
  width: min(calc(100% - (var(--gutter) * 2)), var(--shell));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 900;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--ink-950);
  background: var(--paper);
  transform: translateY(-150%);
  transition: transform 180ms var(--ease-out);
}

.skip-link:focus { transform: translateY(0); }

:focus-visible {
  outline: 2px solid var(--accent-soft);
  outline-offset: 5px;
}

.site-header {
  position: fixed;
  z-index: 200;
  inset: 0 0 auto;
  border-bottom: 1px solid transparent;
  background: oklch(10.5% 0.022 230 / 0%);
  transition: background-color 260ms var(--ease-toggle), border-color 260ms var(--ease-toggle);
}

.site-header.is-scrolled {
  border-color: var(--rule);
  background: oklch(10.5% 0.022 230 / 92%);
  backdrop-filter: blur(18px);
}

.header-inner {
  min-height: 6.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.wordmark {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: clamp(0.86rem, 1.15vw, 1.06rem);
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  white-space: nowrap;
}

.wordmark-logo {
  width: 3.15rem;
  height: auto;
  flex: 0 0 auto;
  opacity: 0.88;
  filter: saturate(0.42) brightness(1.28) contrast(1.05);
}

.header-actions,
.main-nav {
  display: flex;
  align-items: center;
}

.header-actions { gap: clamp(0.85rem, 2vw, 2rem); }
.main-nav { gap: clamp(1rem, 2.3vw, 2.75rem); }

.main-nav a,
.footer-nav a {
  position: relative;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  border: 0;
  color: var(--paper-soft);
  background: transparent;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.19em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 160ms var(--ease-toggle);
}

.main-nav a::after,
.footer-nav a::after {
  content: "";
  position: absolute;
  inset: auto 0 7px;
  height: 1px;
  background: var(--accent-soft);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 240ms var(--ease-out);
}

.hero {
  min-height: max(54rem, 100svh);
  position: relative;
  display: flex;
  align-items: stretch;
  isolation: isolate;
  overflow: clip;
  background: var(--ink-950);
}

.hero-art,
.hero-art picture,
.hero-art img,
.hero-grid {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-art { z-index: -3; }

.hero-art img {
  object-fit: cover;
  object-position: 63% center;
  filter: saturate(0.8) contrast(1.04) brightness(0.74);
  transform: scale(1.02);
}

.hero-art::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, var(--ink-950) 0%, oklch(10.5% 0.022 230 / 94%) 27%, oklch(10.5% 0.022 230 / 52%) 55%, oklch(10.5% 0.022 230 / 10%) 100%),
    linear-gradient(0deg, var(--ink-950) 0%, transparent 28%, oklch(10.5% 0.022 230 / 34%) 100%);
}

.hero-grid {
  z-index: -2;
  opacity: 0.23;
  background-image:
    linear-gradient(var(--rule) 1px, transparent 1px),
    linear-gradient(90deg, var(--rule) 1px, transparent 1px);
  background-size: clamp(4.5rem, 8vw, 8rem) clamp(4.5rem, 8vw, 8rem);
  mask-image: linear-gradient(90deg, black, transparent 78%);
}

.hero-inner {
  display: flex;
  align-items: center;
  padding-top: 8.5rem;
  padding-bottom: 10.5rem;
}

.hero-copy {
  width: min(55rem, 61vw);
  margin-top: 1.75rem;
}

.eyebrow,
.section-index {
  margin: 0;
  color: var(--accent-soft);
  font-size: clamp(0.68rem, 0.82vw, 0.78rem);
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
}

h1, h2 {
  margin: 0;
  color: var(--paper);
  font-family: var(--font-display);
  font-weight: 350;
  text-wrap: balance;
}

h1 {
  max-width: 9.4ch;
  margin-top: 1.9rem;
  margin-left: -0.05em;
  font-size: clamp(4.6rem, 8.1vw, 8.9rem);
  line-height: 0.82;
  letter-spacing: -0.06em;
  text-transform: uppercase;
}

.signal-line {
  width: 3.3rem;
  height: 2px;
  margin-top: clamp(2rem, 3.8vw, 3.5rem);
  display: block;
  background: var(--accent);
}

.hero-lead {
  max-width: 35rem;
  margin: 1.25rem 0 0;
  color: var(--paper-soft);
  font-size: clamp(1.05rem, 1.35vw, 1.3rem);
  line-height: 1.55;
  text-wrap: balance;
}

.text-link {
  min-height: 44px;
  margin-top: 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--paper);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.text-link span:last-child {
  color: var(--accent-soft);
  transition: transform 180ms var(--ease-out);
}

.proof-rail {
  position: absolute;
  inset: auto 0 0;
  border-top: 1px solid var(--rule-strong);
  border-bottom: 1px solid var(--rule-strong);
  background: oklch(10.5% 0.022 230 / 76%);
  backdrop-filter: blur(14px);
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.proof-item {
  min-width: 0;
  min-height: 7.5rem;
  padding: 1.35rem clamp(1rem, 3vw, 3rem);
  display: flex;
  align-items: center;
  gap: clamp(0.9rem, 2vw, 2rem);
  border-right: 1px solid var(--rule-strong);
  color: var(--paper);
  font-size: clamp(0.63rem, 0.75vw, 0.74rem);
  font-weight: 500;
  letter-spacing: 0.23em;
  text-transform: uppercase;
}

.proof-item:last-child { border-right: 0; }

.proof-item svg {
  width: 2.75rem;
  flex: 0 0 auto;
  color: var(--accent);
}

.proof-short { display: none; }

.section {
  scroll-margin-top: 5rem;
  position: relative;
  padding-block: clamp(7rem, 12vw, 12rem);
}

.company {
  overflow: clip;
  background: var(--ink-925);
}

.company > .shell {
  position: relative;
  z-index: 1;
}

.company-network {
  width: min(62vw, 67rem);
  position: absolute;
  z-index: 0;
  top: 4.5rem;
  right: -8vw;
  opacity: 0.055;
  pointer-events: none;
  filter: saturate(0.26) brightness(1.06) contrast(1.04);
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 28%, #000 75%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 28%, #000 75%, transparent 100%);
}

.company-network img {
  display: block;
  width: 100%;
  height: auto;
}

.company-intro {
  margin-top: clamp(2.5rem, 5vw, 5rem);
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(20rem, 0.75fr);
  align-items: end;
  gap: clamp(3rem, 9vw, 9rem);
}

h2 {
  max-width: 12ch;
  margin-left: -0.04em;
  font-size: clamp(3.6rem, 6.8vw, 7.4rem);
  line-height: 0.92;
  letter-spacing: -0.055em;
}

.company-copy {
  padding-bottom: 0.55rem;
  color: var(--paper-soft);
  font-size: clamp(1.02rem, 1.3vw, 1.25rem);
  line-height: 1.72;
}

.company-copy p { margin: 0; }
.company-copy p + p { margin-top: 1.5rem; color: var(--paper-muted); }

.company-facts {
  margin: clamp(5rem, 9vw, 9rem) 0 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--rule-strong);
  border-bottom: 1px solid var(--rule-strong);
}

.company-facts div {
  min-height: 8.5rem;
  padding: 1.45rem clamp(1rem, 2vw, 2rem);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 2rem;
  border-right: 1px solid var(--rule-strong);
}

.company-facts div:last-child { border-right: 0; }
.company-facts dt { color: var(--accent-soft); font-size: 0.7rem; letter-spacing: 0.18em; }
.company-facts dd { margin: 0; font-size: 0.76rem; font-weight: 500; letter-spacing: 0.17em; text-transform: uppercase; }

.contact {
  min-height: 78svh;
  display: flex;
  align-items: center;
  overflow: clip;
  background: var(--ink-950);
}

.contact-water {
  position: absolute;
  z-index: 0;
  inset: 0;
  opacity: 0.22;
  background:
    linear-gradient(90deg, var(--ink-950) 0%, oklch(10.5% 0.022 230 / 80%) 58%, transparent),
    url("assets/images/orca-hero.webp") center bottom / cover no-repeat;
  filter: saturate(0.55) contrast(1.2);
  transform: scaleY(-1);
}

.contact::after {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0;
  background: linear-gradient(0deg, var(--ink-950), transparent 58%, var(--ink-950));
}

.contact-inner { position: relative; z-index: 1; }
.contact h2 { max-width: 13ch; margin-top: clamp(2.25rem, 4vw, 4rem); }

.contact-copy {
  margin: clamp(2.25rem, 4vw, 3.5rem) 0 0;
  color: var(--paper-soft);
  font-size: clamp(1.05rem, 1.3vw, 1.25rem);
}

.contact-email {
  width: min(100%, 57rem);
  min-height: 6.5rem;
  margin-top: clamp(2rem, 4vw, 3.5rem);
  padding-block: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--rule-strong);
  border-bottom: 1px solid var(--rule-strong);
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 3.2vw, 3.25rem);
  font-weight: 350;
  letter-spacing: -0.025em;
  transition: color 180ms var(--ease-toggle), border-color 180ms var(--ease-toggle);
}

.contact-email span:last-child {
  color: var(--accent-soft);
  font-family: var(--font-sans);
  font-size: 1.35rem;
  transition: transform 180ms var(--ease-out);
}

.site-footer {
  border-top: 1px solid var(--rule);
  background: var(--ink-950);
}

.footer-grid {
  padding-block: clamp(3.5rem, 6vw, 5.5rem);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4rem;
}

.footer-brand p {
  margin: 0.8rem 0 0 2.8rem;
  color: var(--paper-muted);
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.footer-nav {
  display: flex;
  align-items: flex-start;
  gap: clamp(1.25rem, 3vw, 3rem);
}

.footer-legal {
  grid-column: 1 / -1;
  padding-top: 2.2rem;
  display: grid;
  grid-template-columns: minmax(0, 48rem) auto;
  justify-content: space-between;
  gap: 3rem;
  border-top: 1px solid var(--rule);
  color: var(--paper-muted);
  font-size: 0.7rem;
  line-height: 1.72;
}

.footer-legal p { margin: 0; }
.footer-legal p:last-child { white-space: nowrap; }

.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 700ms var(--ease-out),
    transform 700ms var(--ease-out);
  transition-delay: calc(var(--reveal-order, 0) * 70ms);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (hover: hover) {
  .main-nav a:hover,
  .footer-nav a:hover { color: var(--paper); }

  .main-nav a:hover::after,
  .footer-nav a:hover::after {
    transform: scaleX(1);
    transform-origin: left;
  }

  .text-link:hover span:last-child { transform: translateY(4px); }
  .contact-email:hover { color: var(--accent-soft); border-color: var(--accent); }
  .contact-email:hover span:last-child { transform: translate(4px, -4px); }
}

@media (max-width: 900px) {
  .hero-copy { width: min(42rem, 76vw); }
  .hero-art img { object-position: 60% center; }
  .hero-art::after {
    background:
      linear-gradient(90deg, var(--ink-950) 0%, oklch(10.5% 0.022 230 / 90%) 30%, oklch(10.5% 0.022 230 / 34%) 78%, transparent),
      linear-gradient(0deg, var(--ink-950), transparent 34%, oklch(10.5% 0.022 230 / 25%));
  }
  .company-intro { grid-template-columns: 1fr; align-items: start; }
  .company-copy { max-width: 42rem; }
  .company-facts { grid-template-columns: repeat(2, 1fr); }
  .company-facts div:nth-child(2) { border-right: 0; }
  .company-facts div:nth-child(-n + 2) { border-bottom: 1px solid var(--rule-strong); }
}

@media (max-width: 640px) {
  :root { --gutter: 1.15rem; }

  .header-inner { min-height: 4.75rem; gap: 0.75rem; }
  .wordmark { gap: 0.5rem; font-size: 0.72rem; letter-spacing: 0.17em; }
  .wordmark-logo { width: 2.55rem; }
  .header-actions { gap: 0.25rem; }
  .main-nav { gap: 0.45rem; }
  .main-nav a { padding-inline: 0.35rem; font-size: 0.62rem; letter-spacing: 0.1em; }

  .hero { min-height: 50rem; }
  .hero-inner { align-items: flex-start; padding-top: 10.5rem; padding-bottom: 8.75rem; }
  .hero-copy { width: 100%; margin-top: 0; }
  .hero-art img { object-position: 62% center; filter: saturate(0.72) contrast(1.05) brightness(0.66); }
  .hero-art::after {
    background:
      linear-gradient(90deg, var(--ink-950) 0%, oklch(10.5% 0.022 230 / 80%) 35%, oklch(10.5% 0.022 230 / 22%) 100%),
      linear-gradient(0deg, var(--ink-950) 0%, oklch(10.5% 0.022 230 / 52%) 38%, oklch(10.5% 0.022 230 / 24%) 100%);
  }

  .eyebrow { max-width: 25rem; font-size: 0.61rem; letter-spacing: 0.2em; }
  h1 { margin-top: 1.4rem; font-size: clamp(2.55rem, 12.8vw, 3.6rem); line-height: 0.86; }
  .signal-line { margin-top: 1.75rem; }
  .hero-lead { max-width: 30rem; font-size: 1rem; line-height: 1.55; }
  .text-link { margin-top: 0.85rem; }

  .proof-item {
    min-height: 6.25rem;
    padding: 0.85rem 0.45rem;
    flex-direction: column;
    justify-content: center;
    gap: 0.65rem;
    text-align: center;
    font-size: 0.57rem;
    letter-spacing: 0.15em;
  }
  .proof-item svg { width: 1.85rem; }
  .proof-long { display: none; }
  .proof-short { display: inline; }

  .section { padding-block: 6.25rem; }
  .company-network {
    width: 52rem;
    max-width: none;
    top: 4rem;
    right: -32rem;
    opacity: 0.045;
  }
  .section-index { font-size: 0.62rem; }
  .company-intro { margin-top: 2.2rem; gap: 2.75rem; }
  h2 { font-size: clamp(3.35rem, 15vw, 4.6rem); line-height: 0.9; }
  .company-copy { font-size: 1rem; line-height: 1.68; }
  .company-facts { margin-top: 4.5rem; }
  .company-facts div { min-height: 7rem; padding: 1rem; gap: 1.5rem; }
  .company-facts dd { font-size: 0.65rem; letter-spacing: 0.12em; }

  .contact { min-height: 43rem; }
  .contact-email { min-height: 5.5rem; font-size: clamp(1.25rem, 6vw, 1.65rem); }

  .footer-grid { grid-template-columns: 1fr; gap: 2.25rem; }
  .footer-nav { flex-wrap: wrap; }
  .footer-legal { grid-template-columns: 1fr; gap: 1.5rem; }
  .footer-legal p:last-child { white-space: normal; }
}

@media (pointer: coarse) {
  .main-nav a,
  .footer-nav a,
  .text-link { min-height: 48px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .js [data-reveal] { opacity: 1; transform: none; }
}