/* =========================================================
   CHAOYU COMPUTE — Design System
   Concept: 算力即疆域 / COMPUTE IS TERRITORY
   ========================================================= */

@font-face {
  font-family: "CY Sans";
  src: url("../fonts/noto-sans-sc-subset.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "CY Serif";
  src: url("../fonts/noto-serif-sc-subset.woff2") format("woff2");
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --ink: #090806;
  --ink-2: #11100d;
  --ink-3: #1a1813;
  --ink-4: #242019;
  --paper: #f1ede4;
  --paper-deep: #e4ded1;
  --paper-bright: #faf7f0;
  --orange: #ff4d12;
  --orange-deep: #d83a05;
  --orange-soft: #ffb18f;
  --gold: #c99a61;
  --bone: #f1ede4;
  --muted: #9b978f;
  --muted-dark: #6f6a61;
  --line: rgba(241, 237, 228, 0.16);
  --line-strong: rgba(241, 237, 228, 0.28);
  --line-dark: rgba(9, 8, 6, 0.15);
  --line-dark-strong: rgba(9, 8, 6, 0.28);

  --sans: "CY Sans", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --serif: "CY Serif", "Songti SC", "STSong", "Noto Serif SC", serif;

  --gutter: clamp(1.25rem, 4.6vw, 5.25rem);
  --header-h: 78px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.76, 0, 0.24, 1);
  --max: 1760px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--bone);
  font-family: var(--sans);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.menu-open,
body.dialog-open {
  overflow: hidden;
}

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

h1,
h2,
h3,
h4,
p,
figure,
blockquote {
  margin: 0;
}

h1,
h2,
h3,
h4 {
  font-weight: 600;
  line-height: 1.12;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

img,
svg,
canvas {
  display: block;
  max-width: 100%;
}

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

button,
input,
select,
textarea {
  color: inherit;
  font: inherit;
}

button {
  border: 0;
  background: none;
  cursor: pointer;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 2000;
  padding: 12px 18px;
  background: var(--orange);
  color: var(--ink);
  font-size: 12px;
  font-weight: 700;
  transform: translateY(-160%);
  transition: transform 0.25s var(--ease);
}

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

/* ---------- ambient texture ---------- */

.site-noise {
  position: fixed;
  inset: 0;
  z-index: 900;
  pointer-events: none;
  opacity: 0.055;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 220 220' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.92' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.75'/%3E%3C/svg%3E");
  background-size: 180px 180px;
  mix-blend-mode: soft-light;
}

.site-noise::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent 0,
    transparent 3px,
    rgba(0, 0, 0, 0.16) 3px,
    rgba(0, 0, 0, 0.16) 4px
  );
  opacity: 0.16;
}

.scroll-progress {
  position: fixed;
  inset: 0 0 auto;
  height: 2px;
  z-index: 1200;
  pointer-events: none;
}

.scroll-progress span {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: 0 50%;
}

/* ---------- shared layout ---------- */

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

.section {
  position: relative;
  padding-block: clamp(5.25rem, 10vw, 10.5rem);
}

.section--paper {
  background: var(--paper);
  color: var(--ink);
}

.section--ink {
  background: var(--ink);
  color: var(--bone);
}

.section--orange {
  background: var(--orange);
  color: var(--ink);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.68rem;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  background: var(--orange);
}

.section--paper .eyebrow::before,
.section--orange .eyebrow::before {
  background: var(--ink);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 3rem;
  padding-bottom: clamp(2.25rem, 4vw, 4.5rem);
  border-bottom: 1px solid var(--line);
}

.section--paper .section-head {
  border-color: var(--line-dark);
}

.section-head__lead {
  max-width: 25rem;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.85;
}

.section--paper .section-head__lead {
  color: var(--muted-dark);
}

.section-title {
  margin-top: 1.4rem;
  font-family: var(--serif);
  font-size: clamp(2.25rem, 4.8vw, 5.4rem);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.03em;
}

.section-title em {
  color: var(--orange);
  font-style: normal;
}

.section--paper .section-title em {
  color: var(--orange-deep);
}

.kicker {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.section--paper .kicker {
  color: var(--muted-dark);
}

.index-tag {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.index-tag b {
  color: var(--orange);
  font-size: 0.72rem;
  font-weight: 700;
}

.section--paper .index-tag b {
  color: var(--orange-deep);
}

.hairline {
  height: 1px;
  background: var(--line);
}

.section--paper .hairline {
  background: var(--line-dark);
}

/* ---------- buttons ---------- */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.3rem;
  min-height: 54px;
  padding: 0.9rem 1.35rem 0.9rem 1.5rem;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--bone);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  line-height: 1.2;
  text-transform: uppercase;
  transition: color 0.35s var(--ease), border-color 0.35s var(--ease);
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: var(--orange);
  transform: translateY(102%);
  transition: transform 0.45s var(--ease);
}

.btn > * {
  position: relative;
  z-index: 1;
}

.btn .arrow {
  width: 17px;
  height: 17px;
  transition: transform 0.4s var(--ease);
}

.btn:hover {
  border-color: var(--orange);
  color: var(--ink);
}

.btn:hover::before {
  transform: translateY(0);
}

.btn:hover .arrow {
  transform: translate(3px, -3px);
}

.btn--solid {
  border-color: var(--orange);
  background: var(--orange);
  color: var(--ink);
}

.btn--solid::before {
  background: var(--bone);
}

.btn--solid:hover {
  border-color: var(--bone);
}

.btn--ink {
  border-color: var(--ink);
  color: var(--ink);
}

.btn--ink::before {
  background: var(--ink);
}

.btn--ink:hover {
  color: var(--bone);
  border-color: var(--ink);
}

.btn--wide {
  width: 100%;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid currentColor;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: gap 0.35s var(--ease), color 0.35s var(--ease);
}

.text-link:hover {
  gap: 1rem;
  color: var(--orange);
}

.section--paper .text-link:hover {
  color: var(--orange-deep);
}

.arrow-icon {
  width: 1em;
  height: 1em;
  flex: 0 0 auto;
}

/* ---------- header ---------- */

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1100;
  height: var(--header-h);
  border-bottom: 1px solid rgba(241, 237, 228, 0.11);
  background: rgba(9, 8, 6, 0.72);
  backdrop-filter: blur(18px) saturate(120%);
  -webkit-backdrop-filter: blur(18px) saturate(120%);
  transition: background 0.4s ease, border-color 0.4s ease, transform 0.5s var(--ease);
}

.site-header.is-scrolled {
  background: rgba(9, 8, 6, 0.92);
  border-color: rgba(241, 237, 228, 0.18);
}

.site-header.is-hidden {
  transform: translateY(-100%);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.5rem;
  width: min(var(--max), calc(100% - var(--gutter) * 2));
  height: 100%;
  margin-inline: auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  flex: 0 0 auto;
}

.brand-symbol {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  object-fit: contain;
  filter: drop-shadow(0 0 8px rgba(255, 77, 18, 0.12));
  transition: transform 0.5s var(--ease), filter 0.5s var(--ease);
}

.brand:hover .brand-symbol {
  transform: scale(1.06);
  filter: drop-shadow(0 0 14px rgba(255, 77, 18, 0.3));
}

.brand-type {
  display: flex;
  flex-direction: column;
  gap: 0.16rem;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.08em;
}

.brand-type small {
  color: var(--muted);
  font-size: 0.47rem;
  font-weight: 500;
  letter-spacing: 0.24em;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.1rem, 2vw, 2rem);
  margin-left: auto;
}

.desktop-nav a {
  position: relative;
  padding: 0.5rem 0;
  color: rgba(241, 237, 228, 0.66);
  font-size: 0.73rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  white-space: nowrap;
  transition: color 0.25s ease;
}

.desktop-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.05rem;
  height: 1px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: 100% 50%;
  transition: transform 0.35s var(--ease);
}

.desktop-nav a:hover,
.desktop-nav a[aria-current="page"] {
  color: var(--bone);
}

.desktop-nav a:hover::after,
.desktop-nav a[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: 0 50%;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 0 0 auto;
}

.header-contact {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  height: 40px;
  padding: 0 0.95rem 0 1.05rem;
  border: 1px solid rgba(241, 237, 228, 0.25);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.header-contact svg {
  width: 13px;
  height: 13px;
  transition: transform 0.35s var(--ease);
}

.header-contact:hover,
.header-contact[aria-current="page"] {
  border-color: var(--orange);
  background: var(--orange);
  color: var(--ink);
}

.header-contact:hover svg {
  transform: translate(2px, -2px);
}

.menu-btn {
  display: none;
  position: relative;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-strong);
  color: var(--bone);
}

.menu-btn span {
  position: absolute;
  left: 11px;
  width: 18px;
  height: 1px;
  background: currentColor;
  transition: transform 0.35s var(--ease), top 0.35s var(--ease);
}

.menu-btn span:first-child {
  top: 16px;
}

.menu-btn span:last-child {
  top: 24px;
}

.menu-btn[aria-expanded="true"] span:first-child {
  top: 20px;
  transform: rotate(45deg);
}

.menu-btn[aria-expanded="true"] span:last-child {
  top: 20px;
  transform: rotate(-45deg);
}

/* ---------- mobile menu ---------- */

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 1050;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: calc(var(--header-h) + 2rem) var(--gutter) 2rem;
  overflow-y: auto;
  background: var(--ink);
  color: var(--bone);
  visibility: hidden;
  opacity: 0;
  clip-path: inset(0 0 100% 0);
  transition: clip-path 0.6s var(--ease-in-out), opacity 0.3s ease, visibility 0s linear 0.6s;
}

.mobile-menu.is-open {
  visibility: visible;
  opacity: 1;
  clip-path: inset(0);
  transition: clip-path 0.6s var(--ease-in-out), opacity 0.3s ease, visibility 0s;
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  margin-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.mobile-menu__nav a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.72rem 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--serif);
  font-size: clamp(1.8rem, 6.5vw, 2.8rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  transition: color 0.25s ease, padding 0.35s var(--ease);
}

.mobile-menu__nav a span {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.58rem;
  font-weight: 500;
  letter-spacing: 0.16em;
}

.mobile-menu__nav a:hover,
.mobile-menu__nav a[aria-current="page"] {
  color: var(--orange);
  padding-left: 0.4rem;
}

.mobile-menu__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  padding-top: 2rem;
  color: var(--muted);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.mobile-menu__foot a {
  color: var(--bone);
}

.mobile-menu__foot .mobile-mail {
  color: var(--orange);
  font-size: clamp(0.82rem, 3.4vw, 1.2rem);
  letter-spacing: 0.01em;
}

/* ---------- page transition ---------- */

.page-transition {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  pointer-events: none;
  visibility: hidden;
}

.page-transition.is-on {
  visibility: visible;
  pointer-events: all;
}

.page-transition__panel {
  background: var(--ink);
  transform: scaleY(0);
  transform-origin: 50% 100%;
  transition: transform 0.5s var(--ease-in-out);
}

.page-transition.is-on .page-transition__panel {
  transform: scaleY(1);
}

.page-transition__mark {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--bone);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  opacity: 0;
  transform: translate(-50%, -50%);
  transition: opacity 0.25s ease;
}

.page-transition.is-on .page-transition__mark {
  opacity: 1;
  transition-delay: 0.24s;
}

.page-transition__mark i {
  width: 7px;
  height: 7px;
  background: var(--orange);
  border-radius: 50%;
  animation: blink 0.9s steps(2, end) infinite;
}

/* ---------- footer ---------- */

.site-footer {
  position: relative;
  overflow: hidden;
  padding: clamp(4rem, 7vw, 7rem) var(--gutter) 1.6rem;
  background: var(--ink);
  color: var(--bone);
  border-top: 1px solid var(--line);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(15rem, 1.4fr) minmax(0, 1fr) minmax(0, 1.15fr);
  gap: clamp(2.5rem, 6vw, 7rem);
  padding-bottom: clamp(3rem, 6vw, 6rem);
}

.footer-brand .brand {
  margin-bottom: 1.7rem;
}

.footer-brand .brand-symbol {
  width: 46px;
  height: 46px;
}

.footer-brand .brand-type {
  font-size: 1.3rem;
}

.footer-brand p {
  max-width: 18rem;
  color: var(--muted);
  font-family: var(--serif);
  font-size: clamp(1.3rem, 2.2vw, 1.9rem);
  font-weight: 500;
  line-height: 1.5;
}

.footer-col h2 {
  margin-bottom: 1.3rem;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.footer-col ul {
  display: grid;
  gap: 0.55rem;
}

.footer-col a {
  display: inline-block;
  padding: 0.1rem 0;
  font-size: 0.78rem;
  color: rgba(241, 237, 228, 0.8);
  transition: color 0.25s ease, transform 0.3s var(--ease);
}

.footer-col a:hover {
  color: var(--orange);
  transform: translateX(3px);
}

.footer-col address {
  color: rgba(241, 237, 228, 0.76);
  font-size: 0.77rem;
  font-style: normal;
  line-height: 1.8;
}

.footer-col address + address {
  margin-top: 0.9rem;
}

.footer-col address b {
  display: block;
  margin-bottom: 0.15rem;
  color: var(--bone);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.footer-col .footer-mail {
  display: block;
  margin-top: 1.2rem;
  color: var(--orange);
  font-size: 0.8rem;
}

.footer-marquee {
  display: flex;
  align-items: center;
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 0.9rem 0;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}

.footer-marquee__track {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 2.5rem;
  min-width: 100%;
  animation: marquee 30s linear infinite;
}

.footer-marquee span {
  flex: 0 0 auto;
  font-size: clamp(2.3rem, 5.5vw, 6rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.05em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(241, 237, 228, 0.34);
}

.footer-marquee i {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  background: var(--orange);
  border-radius: 50%;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.4rem;
  color: var(--muted);
  font-size: 0.61rem;
  letter-spacing: 0.08em;
}

.footer-bottom .coords {
  color: rgba(241, 237, 228, 0.45);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.16em;
}

/* ---------- page hero shared ---------- */

.page-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(4.5rem, 9vw, 9rem)) 0 clamp(4rem, 7vw, 7rem);
}

.page-hero--dark {
  background: var(--ink);
  color: var(--bone);
}

.page-hero--paper {
  background: var(--paper);
  color: var(--ink);
}

.page-hero--orange {
  background: var(--orange);
  color: var(--ink);
}

.page-hero__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: clamp(3rem, 6vw, 6.5rem);
  color: var(--muted);
  font-size: 0.63rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.page-hero--paper .page-hero__top,
.page-hero--orange .page-hero__top {
  color: var(--muted-dark);
}

.page-hero__top .index-path {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.page-hero__top .index-path b {
  color: var(--orange);
}

.page-hero--paper .page-hero__top .index-path b,
.page-hero--orange .page-hero__top .index-path b {
  color: var(--ink);
}

.page-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(18rem, 0.55fr);
  align-items: end;
  gap: clamp(2.5rem, 6vw, 8rem);
}

.page-title {
  font-family: var(--serif);
  font-size: clamp(3.2rem, 8vw, 8.5rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.page-title em {
  color: var(--orange);
  font-style: normal;
}

.page-hero--paper .page-title em {
  color: var(--orange-deep);
}

.page-hero--orange .page-title em {
  color: var(--paper-bright);
}

.page-hero__aside {
  padding-left: clamp(0rem, 2vw, 2rem);
  border-left: 1px solid var(--line);
}

.page-hero--paper .page-hero__aside,
.page-hero--orange .page-hero__aside {
  border-color: var(--line-dark);
}

.page-hero__aside p {
  color: var(--muted);
  font-size: 0.87rem;
  line-height: 1.9;
}

.page-hero--paper .page-hero__aside p,
.page-hero--orange .page-hero__aside p {
  color: rgba(9, 8, 6, 0.7);
}

.page-hero__aside .kicker {
  margin-bottom: 1rem;
}

.page-hero__aside .en-line {
  margin-top: 1.9rem;
  color: var(--bone);
  font-size: 0.61rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  line-height: 1.7;
  text-transform: uppercase;
}

.page-hero--paper .page-hero__aside .en-line,
.page-hero--orange .page-hero__aside .en-line {
  color: var(--ink);
}

.page-hero__rule {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-top: clamp(3rem, 6vw, 6rem);
  color: var(--muted);
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.page-hero__rule::before {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

.page-hero--paper .page-hero__rule,
.page-hero--orange .page-hero__rule {
  color: var(--muted-dark);
}

.page-hero--paper .page-hero__rule::before,
.page-hero--orange .page-hero__rule::before {
  background: var(--line-dark);
}

/* ---------- giant CTA shared ---------- */

.closing-cta {
  position: relative;
  overflow: hidden;
  padding: clamp(5.5rem, 11vw, 11rem) var(--gutter);
  background: var(--ink);
  color: var(--bone);
}

.closing-cta::before {
  content: "";
  position: absolute;
  top: 50%;
  right: -18vw;
  width: 60vw;
  height: 60vw;
  border: 1px solid rgba(255, 77, 18, 0.25);
  border-radius: 50%;
  transform: translateY(-50%);
  box-shadow: 0 0 0 8vw rgba(255, 77, 18, 0.02), 0 0 0 16vw rgba(255, 77, 18, 0.018);
  pointer-events: none;
}

.closing-cta__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 3rem;
  width: min(var(--max), 100%);
  margin-inline: auto;
}

.closing-cta h2 {
  max-width: 11em;
  font-family: var(--serif);
  font-size: clamp(3rem, 7vw, 7.6rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.05em;
}

.closing-cta h2 em {
  color: var(--orange);
  font-style: normal;
}

.closing-cta__aside {
  max-width: 21rem;
  padding-bottom: 0.4rem;
}

.closing-cta__aside p {
  margin-bottom: 1.8rem;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.9;
}

.closing-cta__aside .eyebrow {
  margin-bottom: 1.1rem;
}

/* ---------- page enter / reveal ---------- */

.page-enter {
  animation: pageIn 0.9s var(--ease) both;
}

.js .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
  transition-delay: var(--delay, 0ms);
}

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

.js .reveal-clip {
  clip-path: inset(0 0 100% 0);
  transition: clip-path 1.1s var(--ease);
  transition-delay: var(--delay, 0ms);
}

.js .reveal-clip.is-visible {
  clip-path: inset(0);
}

/* shared mini components */

.dot-live {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--orange);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(255, 77, 18, 0.16);
  animation: pulseDot 2s ease-out infinite;
}

.mono {
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.rule-label {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.rule-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

.section--paper .rule-label {
  color: var(--muted-dark);
}

.section--paper .rule-label::after {
  background: var(--line-dark);
}

/* keyframes */

@keyframes marquee {
  to {
    transform: translateX(-50%);
  }
}

@keyframes pulseDot {
  0% {
    box-shadow: 0 0 0 0 rgba(255, 77, 18, 0.35);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(255, 77, 18, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(255, 77, 18, 0);
  }
}

@keyframes blink {
  50% {
    opacity: 0.2;
  }
}

@keyframes pageIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes lineUp {
  from {
    transform: translateY(110%);
  }
  to {
    transform: translateY(0);
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes coreSpin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes dialogIn {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* ---------- responsive ---------- */

@media (max-width: 1180px) {
  .desktop-nav {
    display: none;
  }

  .menu-btn {
    display: block;
  }

  .header-inner {
    gap: 1.5rem;
  }

  .header-contact {
    margin-left: auto;
  }
}

@media (max-width: 900px) {
  :root {
    --header-h: 68px;
  }

  .header-contact {
    display: none;
  }

  .page-hero__grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .page-hero__top > span:last-child {
    display: none;
  }

  .page-hero__top .index-path {
    flex-wrap: nowrap;
    white-space: nowrap;
  }

  .page-hero__aside {
    max-width: 32rem;
    padding-left: 0;
    border-left: 0;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .section-head {
    display: block;
  }

  .section-head__lead {
    margin-top: 1.4rem;
  }

  .closing-cta__inner {
    display: block;
  }

  .closing-cta__aside {
    margin-top: 2.5rem;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15px;
  }

  .site-noise {
    opacity: 0.04;
  }

  .header-inner {
    width: calc(100% - 1.5rem);
  }

  .brand-type {
    font-size: 0.92rem;
  }

  .brand-symbol {
    width: 32px;
    height: 32px;
  }

  .mobile-menu {
    padding-inline: 1.25rem;
  }

  .mobile-menu__nav a {
    font-size: clamp(1.65rem, 8vw, 2.2rem);
    padding: 0.65rem 0;
  }

  .page-hero__top {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 0.55rem;
  }

  .page-hero__top > span:last-child {
    display: none;
  }

  .page-hero__top .index-path {
    flex-wrap: nowrap;
    white-space: nowrap;
  }

  .footer-top {
    grid-template-columns: 1fr;
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-bottom {
    font-size: 0.57rem;
  }

  .footer-bottom .coords {
    width: 100%;
  }

  .btn {
    min-height: 50px;
  }

  .closing-cta {
    padding-inline: var(--gutter);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .js .reveal,
  .js .reveal-clip {
    opacity: 1;
    transform: none;
    clip-path: none;
  }
}