:root {
  --bg: #f5f0e6;
  --bg-soft: #f9f5ee;
  --paper: #fbf7f0;
  --paper-strong: #efe7d8;
  --paper-warm: #e6dbc8;
  --ink: #191610;
  --ink-soft: #5b554c;
  --ink-muted: #80786c;
  --line: rgba(25, 22, 16, 0.14);
  --line-strong: rgba(25, 22, 16, 0.22);
  --accent: #6f5a42;
  --shadow-soft: 0 12px 30px rgba(72, 54, 32, 0.05);
  --shadow-card: 0 18px 48px rgba(72, 54, 32, 0.08);
  --radius-xl: 36px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --content-width: min(1280px, calc(100vw - 48px));
  --section-space: 74px;
  --font-display: "Iowan Old Style", "Georgia", "Times New Roman", "Songti SC", "STSong", serif;
  --font-sans: "Avenir Next", "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "IBM Plex Mono", "Menlo", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-sans);
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.45), transparent 28%),
    linear-gradient(180deg, #f7f2ea 0%, #f3eee4 52%, #f5f0e6 100%);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(circle, rgba(25, 22, 16, 0.03) 0.8px, transparent 0.8px);
  background-size: 14px 14px;
  opacity: 0.35;
  z-index: -1;
}

::selection {
  background: rgba(25, 22, 16, 0.14);
}

:focus-visible {
  outline: 2px solid rgba(25, 22, 16, 0.3);
  outline-offset: 2px;
}

main {
  position: relative;
}

body[data-lang-mode="en"] [data-lang="zh"],
body[data-lang-mode="zh"] [data-lang="en"] {
  display: none;
}

body[data-lang-mode="en"] .card-copy-zh,
body[data-lang-mode="zh"] .card-copy-en {
  display: none;
}

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

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

button {
  font: inherit;
}

.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--ink);
  z-index: 100;
}

.site-shell {
  width: 100%;
}

.topbar,
.section,
.footer {
  width: var(--content-width);
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 0;
  z-index: 90;
  backdrop-filter: blur(10px);
  transition: padding 180ms ease;
}

.topbar::after {
  content: "";
  position: absolute;
  inset: 8px -18px;
  z-index: -1;
  border: 1px solid rgba(25, 22, 16, 0.06);
  border-radius: 999px;
  background: rgba(249, 245, 238, 0.82);
  box-shadow: 0 0 0 rgba(0, 0, 0, 0);
  transition: border-color 180ms ease, background 180ms ease, box-shadow 180ms ease, inset 180ms ease;
}

.topbar.is-scrolled {
  padding: 14px 0;
}

.topbar.is-scrolled::after {
  inset: 6px -18px;
  border-color: rgba(25, 22, 16, 0.1);
  background: rgba(249, 245, 238, 0.92);
  box-shadow: 0 10px 26px rgba(72, 54, 32, 0.05);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.55);
  font-family: var(--font-display);
  font-size: 1rem;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-copy strong,
.footer-brandline {
  letter-spacing: 0.14em;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
}

.brand-copy em,
.footer,
.footer a {
  color: var(--ink-muted);
  font-style: normal;
}

.brand-copy em {
  font-size: 0.8rem;
}

.topnav,
.topbar-actions,
.footer-group {
  display: flex;
  align-items: center;
}

.topnav {
  gap: 24px;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.nav-link {
  position: relative;
  transition: color 180ms ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 1px;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--ink);
  transition: transform 200ms ease;
}

.nav-link:hover,
.nav-link:focus-visible,
.nav-link.is-current {
  color: var(--ink);
}

.nav-link:hover::after,
.nav-link:focus-visible::after,
.nav-link.is-current::after {
  transform: scaleX(1);
}

.topbar-actions {
  gap: 10px;
}

.lang-toggle {
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}

.lang-toggle-track {
  position: relative;
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  width: 90px;
  height: 42px;
  padding: 0 4px;
}

.lang-toggle-track::before {
  content: "";
  position: absolute;
  inset: 4px auto 4px 4px;
  width: calc(50% - 4px);
  border-radius: 999px;
  background: var(--ink);
  transition: transform 220ms ease;
}

body[data-lang-mode="zh"] .lang-toggle-track::before {
  transform: translateX(39px);
}

.lang-toggle-option {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  color: var(--ink);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

body[data-lang-mode="en"] .lang-toggle-option:first-child,
body[data-lang-mode="zh"] .lang-toggle-option:last-child {
  color: #fff;
}

.section {
  position: relative;
  padding: var(--section-space) 0;
  scroll-margin-top: 96px;
}

main > .section + .section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(25, 22, 16, 0.08) 14%, rgba(25, 22, 16, 0.08) 86%, transparent);
}

.eyebrow,
.sheet-label,
.front-label,
.card-index,
.model-meta span,
.value-columns article span,
.solution-item span,
.footer-brand p:first-child,
.footer-group p {
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  align-items: center;
  gap: 48px;
  min-height: calc(100vh - 112px);
  padding-top: 34px;
}

.hero-helper {
  margin: 0 0 16px;
  color: var(--ink-muted);
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2vw, 1.7rem);
  letter-spacing: -0.03em;
}

.hero h1,
.feature-copy h2,
.section-heading h2,
.value-heading h2,
.philosophy-copy h2,
.cta-panel h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 0.95;
  letter-spacing: -0.05em;
  text-wrap: balance;
}

.hero h1 {
  max-width: 10ch;
  font-size: clamp(4.1rem, 8vw, 8rem);
}

.hero-text,
.feature-copy p,
.feature-metrics p,
.capability-card p,
.model-body p,
.section-intro,
.value-heading p,
.value-columns article p,
.solution-item p,
.philosophy-copy p,
.cta-panel p,
.manifesto-text {
  color: var(--ink-soft);
  line-height: 1.8;
  font-size: 1rem;
  text-wrap: pretty;
}

.hero-text {
  max-width: 38rem;
  margin-top: 20px;
  font-size: 1.08rem;
}

.hero-copy {
  max-width: 41rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.hero-rail {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid rgba(25, 22, 16, 0.12);
}

.hero-rail-item {
  min-width: 0;
}

.hero-rail-label {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-rail-item p {
  margin: 0;
  color: var(--ink);
  line-height: 1.6;
  font-size: 0.98rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 0.96rem;
  letter-spacing: -0.01em;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

.button-primary:hover,
.button-primary:focus-visible {
  box-shadow: 0 12px 24px rgba(25, 22, 16, 0.12);
}

.button-secondary {
  background: transparent;
  color: var(--ink);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background: rgba(25, 22, 16, 0.04);
  border-color: rgba(25, 22, 16, 0.22);
}

.button-header {
  min-height: 42px;
  padding: 0 18px;
}

.hero-figure {
  position: relative;
}

.hero-art {
  position: relative;
  min-height: 640px;
  filter: saturate(0.98);
}

.hero-sheet {
  position: absolute;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--paper);
  box-shadow: var(--shadow-soft);
}

.hero-sheet-back {
  inset: 14% 10% 24% 22%;
  background: linear-gradient(180deg, #f2ebdd, #ebe1d0);
  transform: rotate(-7deg);
}

.hero-sheet-main {
  inset: 6% 6% 10% 8%;
  overflow: hidden;
}

.hero-sheet-main::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.14), transparent 28%, transparent 82%, rgba(25, 22, 16, 0.04));
  pointer-events: none;
}

.sheet-grid {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(25, 22, 16, 0.06) 1px, transparent 1px),
    linear-gradient(rgba(25, 22, 16, 0.06) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.7), transparent 98%);
}

.sheet-label {
  position: absolute;
  top: 24px;
  left: 28px;
}

.sheet-room,
.sheet-wall,
.sheet-note {
  position: absolute;
}

.sheet-room {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(25, 22, 16, 0.12);
  border-radius: 18px;
  box-shadow: 0 14px 28px rgba(72, 54, 32, 0.04);
}

.room-a {
  top: 20%;
  left: 11%;
  width: 42%;
  height: 20%;
}

.room-b {
  top: 22%;
  right: 12%;
  width: 22%;
  height: 34%;
}

.room-c {
  left: 11%;
  bottom: 16%;
  width: 34%;
  height: 22%;
}

.room-d {
  left: 48%;
  bottom: 18%;
  width: 22%;
  height: 14%;
}

.sheet-wall {
  background: rgba(25, 22, 16, 0.1);
  border-radius: 999px;
}

.wall-a {
  top: 20%;
  left: 54%;
  width: 1px;
  height: 52%;
}

.wall-b {
  top: 40%;
  left: 11%;
  width: 62%;
  height: 1px;
}

.wall-c {
  top: 54%;
  left: 45%;
  width: 1px;
  height: 22%;
}

.sheet-note {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 34px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(251, 247, 240, 0.95);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.note-a {
  top: 16%;
  right: 10%;
}

.note-b {
  left: 12%;
  bottom: 10%;
}

.note-c {
  right: 18%;
  bottom: 26%;
}

.hero-sheet-front {
  right: 0;
  bottom: 0;
  width: min(340px, 48%);
  min-height: 240px;
  background: linear-gradient(180deg, #fbf7f0, #f0e6d7);
}

.front-card {
  padding: 26px 24px;
}

.front-card strong,
.model-body strong {
  display: block;
  margin-top: 10px;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.front-card p {
  margin: 12px 0 0;
  color: var(--ink-soft);
  line-height: 1.75;
}

.manifesto {
  padding-top: 16px;
}

.manifesto-inner,
.feature-card,
.capability-card,
.model-row,
.value-panel,
.solution-item,
.cta-panel,
.philosophy-note {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(251, 247, 240, 0.84);
  box-shadow: var(--shadow-soft);
}

.feature-card,
.capability-card,
.model-row,
.solution-item,
.cta-panel,
.philosophy-note,
.manifesto-inner,
.value-panel {
  transition: box-shadow 220ms ease, border-color 220ms ease, background 220ms ease;
}

.feature-card:hover,
.capability-card:hover,
.model-row:hover,
.solution-item:hover,
.cta-panel:hover,
.philosophy-note:hover,
.manifesto-inner:hover,
.value-panel:hover {
  box-shadow: var(--shadow-card);
  border-color: var(--line-strong);
}

.manifesto-inner {
  padding: 34px 36px;
}

.manifesto-text {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 2.4vw, 2.45rem);
  line-height: 1.42;
  letter-spacing: -0.035em;
}

.feature-card {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 26px;
  padding: 32px;
}

.feature-copy {
  padding-right: 20px;
}

.feature-copy h2,
.section-heading h2,
.value-heading h2,
.philosophy-copy h2,
.cta-panel h2 {
  max-width: 12ch;
  font-size: clamp(2.6rem, 5vw, 5rem);
}

.feature-copy p {
  max-width: 38rem;
}

.inline-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  color: var(--ink);
  font-size: 0.96rem;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.inline-link::after {
  content: "->";
  font-family: var(--font-mono);
}

.feature-metrics {
  display: grid;
  gap: 0;
  padding-left: 22px;
  border-left: 1px solid rgba(25, 22, 16, 0.1);
}

.feature-metrics article {
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.feature-metrics article:first-child {
  border-top: 0;
  padding-top: 0;
}

.feature-metrics article span,
.capability-card .card-index,
.value-columns article span,
.model-meta span {
  display: block;
  margin-bottom: 12px;
}

.feature-metrics h3,
.capability-card h3,
.model-body h3,
.value-columns article h3,
.solution-item h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.feature-metrics h3,
.capability-card h3,
.value-columns article h3,
.solution-item h3 {
  font-size: 1.4rem;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 24px;
  margin-bottom: 28px;
}

.section-intro {
  max-width: 34rem;
  margin: 0;
  padding-top: 8px;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.capability-card {
  padding: 24px 22px;
}

.capability-card:nth-child(2n) {
  background: rgba(255, 251, 245, 0.92);
}

.capability-card p,
.value-columns article p,
.solution-item p {
  margin: 0;
}

.model-list {
  display: grid;
  gap: 0;
}

.model-row {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 24px;
  padding: 24px 26px;
  align-items: start;
  border-radius: 0;
}

.model-row-featured {
  background: linear-gradient(180deg, #f8f3eb, #efe6d7);
  border-color: var(--line-strong);
}

.model-row:first-child {
  border-top-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
}

.model-row:last-child {
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

.model-row + .model-row {
  margin-top: -1px;
}

.model-meta {
  padding-right: 18px;
  border-right: 1px solid rgba(25, 22, 16, 0.1);
}

.model-meta p,
.model-body p {
  margin: 0;
}

.model-meta p {
  color: var(--ink-muted);
  line-height: 1.7;
}

.model-body h3 {
  font-size: 2rem;
}

.model-body p {
  max-width: 42rem;
}

.model-body {
  position: relative;
  padding-right: 48px;
}

.model-body::after {
  content: "->";
  position: absolute;
  top: 4px;
  right: 0;
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  letter-spacing: 0.08em;
}

.value-panel {
  padding: 32px;
}

.value-heading p {
  max-width: 42rem;
}

.value-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.value-columns article {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.solution-list {
  display: grid;
  gap: 12px;
}

.solution-item {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  padding: 18px 22px;
}

.solution-item::after {
  content: "->";
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

.solution-item h3 {
  margin-bottom: 4px;
}

.philosophy-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 26px;
  align-items: center;
}

.philosophy-copy p {
  max-width: 40rem;
}

.philosophy-note {
  padding: 26px;
}

.note-stack {
  display: grid;
  gap: 14px;
}

.note-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 88px;
  padding: 0 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.38);
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.note-card-strong {
  justify-content: center;
  min-height: 160px;
  background: linear-gradient(180deg, #f0e6d7, #e3d4bc);
  font-size: 2.1rem;
  letter-spacing: 0.08em;
}

.cta-panel {
  padding: 42px 32px;
  text-align: center;
  background: linear-gradient(180deg, #f8f3eb, #eee4d5);
}

.cta-panel h2 {
  max-width: none;
}

.cta-panel p {
  max-width: 40rem;
  margin: 18px auto 0;
}

.cta-panel .hero-actions {
  justify-content: center;
}

.footer {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) repeat(3, minmax(0, 0.72fr)) auto;
  gap: 24px;
  align-items: start;
  padding: 14px 0 40px;
  border-top: 1px solid rgba(25, 22, 16, 0.08);
}

.footer-brand p,
.footer-group p {
  margin: 0 0 10px;
}

.footer-brand p:last-child {
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.7;
  letter-spacing: 0;
  text-transform: none;
  font-family: var(--font-sans);
}

.footer-meta {
  display: block;
  max-width: 26rem;
  color: var(--ink-muted);
  font-size: 0.84rem;
  line-height: 1.7;
}

.footer-group {
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.footer-group a {
  transition: color 160ms ease;
}

.footer-group a:hover,
.footer-group a:focus-visible {
  color: var(--ink);
}

.footer-brandline {
  justify-self: end;
  text-align: right;
  line-height: 1.6;
}

.footer-brandline span {
  display: block;
}

.footer-brandline small {
  display: block;
  margin-top: 8px;
  color: var(--ink-muted);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
}

.request-hero,
.request-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 30px;
  align-items: start;
}

.request-copy h1 {
  max-width: 12ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 7vw, 6.4rem);
  font-weight: 500;
  line-height: 0.95;
  letter-spacing: -0.05em;
  text-wrap: balance;
}

.request-points {
  display: grid;
  gap: 14px;
  margin-top: 32px;
}

.request-points article,
.request-aside-card,
.request-form-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(251, 247, 240, 0.84);
  box-shadow: var(--shadow-soft);
}

.request-points article {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 20px;
}

.request-points article span {
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.request-points article p,
.request-list li,
.request-side p,
.request-status,
.field span,
.field input,
.field select,
.field textarea {
  color: var(--ink-soft);
  line-height: 1.75;
}

.request-points article p {
  margin: 0;
}

.request-aside-card,
.request-form-card {
  padding: 26px;
}

.request-list {
  display: grid;
  gap: 14px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.request-list li {
  position: relative;
  padding-left: 18px;
}

.request-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(25, 22, 16, 0.36);
}

.request-side h2 {
  max-width: 13ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 4vw, 4.5rem);
  font-weight: 500;
  line-height: 0.97;
  letter-spacing: -0.05em;
  text-wrap: balance;
}

.request-form {
  display: grid;
  gap: 18px;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.field {
  display: grid;
  gap: 8px;
}

.field > span {
  color: var(--ink-muted);
  font-size: 0.84rem;
  letter-spacing: 0.02em;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid rgba(25, 22, 16, 0.14);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.52);
  color: var(--ink);
  padding: 14px 16px;
  font: inherit;
  transition: border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.field input:hover,
.field select:hover,
.field textarea:hover,
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: rgba(25, 22, 16, 0.24);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 0 0 4px rgba(25, 22, 16, 0.04);
  outline: 0;
}

.field textarea {
  resize: vertical;
  min-height: 124px;
}

.field-checkbox {
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 12px;
  padding-top: 4px;
}

.field-hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.field-checkbox input {
  width: 18px;
  height: 18px;
  margin-top: 3px;
  padding: 0;
  border-radius: 6px;
}

.field-checkbox > span {
  font-size: 0.92rem;
}

.request-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 6px;
}

.request-actions .button[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.request-actions .button[data-loading="true"] {
  opacity: 0.72;
}

.request-status {
  display: none;
  padding: 16px 18px;
  border: 1px solid rgba(25, 22, 16, 0.12);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.48);
  font-size: 0.94rem;
}

.request-status strong {
  color: var(--ink);
  font-weight: 600;
}

.request-status.is-visible {
  display: block;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms ease, transform 700ms ease;
}

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

@media (max-width: 1180px) {
  .topbar {
    flex-wrap: wrap;
  }

  .topnav {
    order: 3;
    width: 100%;
    justify-content: center;
  }

  .hero,
  .feature-card,
  .philosophy-layout,
  .request-hero,
  .request-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 12px;
  }

  .hero-copy {
    max-width: none;
  }

  .feature-copy {
    padding-right: 0;
  }

  .feature-metrics {
    padding-left: 0;
    padding-top: 18px;
    border-left: 0;
    border-top: 1px solid rgba(25, 22, 16, 0.1);
  }

  .capability-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .value-columns {
    grid-template-columns: 1fr;
  }

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

  .footer-brandline {
    justify-self: start;
    text-align: left;
  }
}

@media (max-width: 860px) {
  :root {
    --content-width: min(100vw - 28px, 100%);
    --section-space: 60px;
  }

  .topnav {
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .topbar-actions {
    width: 100%;
    justify-content: space-between;
  }

  .hero h1 {
    font-size: clamp(3.4rem, 14vw, 5.2rem);
  }

  .hero-art {
    min-height: 520px;
  }

  .feature-card,
  .value-panel,
  .cta-panel {
    padding: 24px;
  }

  .capability-grid {
    grid-template-columns: 1fr;
  }

  .field-grid {
    grid-template-columns: 1fr;
  }

  .model-row {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .model-meta {
    padding-right: 0;
    padding-bottom: 16px;
    border-right: 0;
    border-bottom: 1px solid rgba(25, 22, 16, 0.1);
  }

  .solution-item {
    grid-template-columns: 56px minmax(0, 1fr) auto;
    gap: 14px;
  }

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

@media (max-width: 560px) {
  .topbar::after {
    inset: 8px -8px;
  }

  .topbar-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .lang-toggle {
    align-self: flex-start;
  }

  .button,
  .button-header {
    width: 100%;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-text {
    font-size: 1rem;
  }

  .hero-art {
    min-height: 440px;
  }

  .hero-rail {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .hero-sheet-front {
    width: calc(100% - 22px);
  }

  .manifesto-inner {
    padding: 24px;
  }

  .section-heading {
    gap: 16px;
  }

  .section-intro {
    padding-top: 0;
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition-duration: 0.01ms !important;
  }
}