/* ==========================================================================
   Guangyu Intelligent Computing (Tensorplume) — corporate site stylesheet
   Editorial, light-on-paper with deep ink sections. Accent: feather teal.
   ========================================================================== */

:root {
  --ink: #0b1626;
  --ink-2: #13233a;
  --ink-3: #1c2f4b;
  --paper: #f6f3ec;
  --paper-2: #ece7dc;
  --paper-3: #e2dccd;
  --white: #ffffff;
  --text: #14202f;
  --muted: #5b6675;
  --muted-2: #8a93a0;
  --line: rgba(11, 22, 38, 0.12);
  --line-strong: rgba(11, 22, 38, 0.22);
  --line-on-ink: rgba(246, 243, 236, 0.14);
  --accent: #0fa58f;
  --accent-deep: #0b8574;
  --accent-soft: rgba(15, 165, 143, 0.12);
  --amber: #f5b72b;
  --amber-soft: rgba(245, 183, 43, 0.16);
  --danger: #d64545;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC",
    "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial,
    sans-serif;
  --font-num: "Helvetica Neue", "Avenir Next", -apple-system, BlinkMacSystemFont, "Segoe UI",
    Arial, var(--font-sans);
  --font-mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, "Courier New", monospace;

  --container: 1240px;
  --gutter: clamp(20px, 4vw, 48px);
  --section: clamp(72px, 10vw, 136px);
  --radius: 14px;
  --radius-lg: 22px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --header-h: 72px;
}

/* ---------- reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
h1,
h2,
h3,
h4,
p,
ul,
ol,
figure {
  margin: 0;
}
ul,
ol {
  padding: 0;
  list-style: none;
}
a {
  color: inherit;
  text-decoration: none;
}
img,
svg {
  display: block;
  max-width: 100%;
}
button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
::selection {
  background: var(--accent);
  color: var(--white);
}

/* ---------- typography ---------- */
.h-display {
  font-size: clamp(40px, 6.2vw, 84px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 700;
}
html[lang="en"] .h-display {
  font-size: clamp(38px, 5.6vw, 76px);
}
.h1 {
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 700;
}
.h2 {
  font-size: clamp(28px, 3.6vw, 46px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  font-weight: 700;
}
.h3 {
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.3;
  font-weight: 600;
}
.h4 {
  font-size: 18px;
  line-height: 1.4;
  font-weight: 600;
}
.lead {
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.7;
  color: var(--muted);
}
.small {
  font-size: 14px;
}
.muted {
  color: var(--muted);
}
.num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
}
.mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin-bottom: 20px;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
}
.on-ink .eyebrow {
  color: var(--accent);
}
.accent {
  color: var(--accent);
}
.max-ch {
  max-width: 62ch;
}

/* ---------- layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-inline: var(--gutter);
}
.section {
  padding-block: var(--section);
  position: relative;
}
.section-tight {
  padding-block: calc(var(--section) * 0.6);
}
.on-ink {
  background: var(--ink);
  color: var(--paper);
}
.on-ink .muted,
.on-ink .lead {
  color: rgba(246, 243, 236, 0.66);
}
.on-paper-2 {
  background: var(--paper-2);
}
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 32px clamp(32px, 6vw, 96px);
  align-items: end;
  margin-bottom: clamp(40px, 5vw, 72px);
}
.section-head .lead {
  padding-bottom: 6px;
}
.section-head--stack {
  grid-template-columns: 1fr;
  max-width: 760px;
}
.grid {
  display: grid;
  gap: 24px;
}
.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.divider {
  height: 1px;
  background: var(--line);
}
.on-ink .divider {
  background: var(--line-on-ink);
}

/* diagonal hairline texture used on hero & stages */
.texture {
  position: relative;
}
.texture::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    135deg,
    rgba(11, 22, 38, 0.055) 0 1px,
    transparent 1px 14px
  );
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0.15));
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0.15));
}
.on-ink.texture::before {
  background-image: repeating-linear-gradient(
    135deg,
    rgba(246, 243, 236, 0.07) 0 1px,
    transparent 1px 14px
  );
}
.texture > * {
  position: relative;
}

/* ---------- buttons ---------- */
.btn {
  --btn-bg: var(--ink);
  --btn-fg: var(--paper);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 0 24px;
  border-radius: 999px;
  border: 1px solid var(--btn-bg);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.01em;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.35s var(--ease), background 0.25s, color 0.25s, border-color 0.25s,
    box-shadow 0.35s;
}
.btn svg {
  width: 18px;
  height: 18px;
  transition: transform 0.35s var(--ease);
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -12px rgba(11, 22, 38, 0.45);
}
.btn:hover svg {
  transform: translateX(3px);
}
.btn-accent {
  --btn-bg: var(--accent);
  --btn-fg: var(--white);
}
.btn-accent:hover {
  background: var(--accent-deep);
  border-color: var(--accent-deep);
}
.btn-ghost {
  --btn-bg: transparent;
  --btn-fg: var(--text);
  border-color: var(--line-strong);
}
.btn-ghost:hover {
  border-color: var(--text);
  box-shadow: none;
}
.on-ink .btn-ghost {
  --btn-fg: var(--paper);
  border-color: rgba(246, 243, 236, 0.35);
}
.on-ink .btn-ghost:hover {
  border-color: var(--paper);
}
.btn-sm {
  min-height: 42px;
  padding: 0 18px;
  font-size: 14px;
}
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--accent-deep);
}
.link-arrow svg {
  width: 18px;
  height: 18px;
  transition: transform 0.35s var(--ease);
}
.link-arrow:hover svg {
  transform: translateX(4px);
}
.on-ink .link-arrow {
  color: var(--accent);
}

/* ---------- chips / tags ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--white);
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.4;
}
.chip-accent {
  background: var(--accent-soft);
  border-color: transparent;
  color: var(--accent-deep);
}
.chip-amber {
  background: var(--amber-soft);
  border-color: transparent;
  color: #8a5f00;
}
.on-ink .chip {
  background: rgba(246, 243, 236, 0.06);
  border-color: var(--line-on-ink);
  color: var(--paper);
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 6px;
  background: var(--paper-2);
  color: var(--muted);
}
.on-ink .tag {
  background: rgba(246, 243, 236, 0.08);
  color: rgba(246, 243, 236, 0.7);
}

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: rgba(246, 243, 236, 0.82);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}
.site-header.is-scrolled {
  border-bottom-color: var(--line);
}
.site-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: 18px;
  flex-shrink: 0;
}
.brand-mark {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
}
.brand-cn {
  font-size: 15px;
  font-weight: 500;
  color: var(--muted);
  padding-left: 12px;
  border-left: 1px solid var(--line-strong);
  line-height: 1.2;
}
.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.nav a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  position: relative;
  transition: color 0.2s, background 0.2s;
}
.nav a:hover {
  background: rgba(11, 22, 38, 0.05);
}
.nav a[aria-current="page"] {
  color: var(--accent-deep);
}
.nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.lang-switch a {
  padding: 4px 6px;
  border-radius: 6px;
}
.lang-switch a:hover {
  color: var(--text);
}
.lang-switch a[aria-current="true"] {
  color: var(--text);
  font-weight: 700;
}
.lang-switch span {
  color: var(--line-strong);
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  position: relative;
  transition: background 0.2s;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--text);
  transition: transform 0.3s var(--ease);
}
.nav-toggle span::before {
  top: -6px;
}
.nav-toggle span::after {
  top: 6px;
}
body.nav-open .nav-toggle span {
  background: transparent;
}
body.nav-open .nav-toggle span::before {
  transform: translateY(6px) rotate(45deg);
}
body.nav-open .nav-toggle span::after {
  transform: translateY(-6px) rotate(-45deg);
}

/* ---------- hero (home) ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(56px, 8vw, 112px) clamp(56px, 7vw, 96px);
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 48px clamp(32px, 5vw, 80px);
  align-items: center;
}
.hero .h-display {
  margin-top: 8px;
}
.hero .h-display em {
  font-style: normal;
  color: var(--accent);
}
.hero .lead {
  margin-top: 28px;
  max-width: 56ch;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 40px;
}
.hero-meta {
  margin-top: 56px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  color: var(--muted);
  font-size: 14px;
}
.hero-meta strong {
  color: var(--text);
  font-weight: 600;
}
.hero-art {
  position: relative;
  aspect-ratio: 1 / 1.05;
  min-height: 420px;
}
.hero-art svg {
  width: 100%;
  height: 100%;
}
.hero-glow {
  position: absolute;
  width: 62vw;
  height: 62vw;
  max-width: 900px;
  max-height: 900px;
  right: -20vw;
  top: -22vw;
  border-radius: 50%;
  background: radial-gradient(
    circle at center,
    rgba(15, 165, 143, 0.22),
    rgba(245, 183, 43, 0.12) 38%,
    rgba(246, 243, 236, 0) 68%
  );
  filter: blur(20px);
  pointer-events: none;
}

/* stat blocks */
.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.stat {
  padding: 28px 28px 30px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.45);
}
.on-ink .stats {
  border-color: var(--line-on-ink);
}
.on-ink .stat {
  border-color: var(--line-on-ink);
  background: rgba(246, 243, 236, 0.03);
}
.stat-value {
  font-family: var(--font-num);
  font-size: clamp(36px, 4vw, 54px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--ink);
}
.on-ink .stat-value {
  color: var(--paper);
}
.stat-value sup {
  font-size: 0.5em;
  vertical-align: top;
  margin-left: 2px;
  color: var(--accent);
}
.stat-label {
  margin-top: 12px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.5;
}

/* ---------- cards ---------- */
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease), border-color 0.3s;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 48px -28px rgba(11, 22, 38, 0.35);
  border-color: var(--line-strong);
}
.card-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  color: var(--accent-deep);
  margin-bottom: 22px;
}
.card-icon svg {
  width: 24px;
  height: 24px;
}
.card .h3,
.card .h4 {
  margin-bottom: 10px;
}
.card p {
  color: var(--muted);
  font-size: 15px;
}
.card-index {
  position: absolute;
  top: 26px;
  right: 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted-2);
}
.on-ink .card {
  background: rgba(246, 243, 236, 0.04);
  border-color: var(--line-on-ink);
}
.on-ink .card:hover {
  border-color: rgba(246, 243, 236, 0.3);
}
.on-ink .card p {
  color: rgba(246, 243, 236, 0.66);
}
.on-ink .card-icon {
  background: rgba(15, 165, 143, 0.18);
  color: var(--accent);
}

/* capability rows (numbered, editorial) */
.rows {
  border-top: 1px solid var(--line);
}
.row-item {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr) minmax(0, 1.3fr) 40px;
  gap: 24px;
  align-items: start;
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.3s;
}
.row-item:hover {
  background: linear-gradient(90deg, rgba(15, 165, 143, 0.06), transparent 60%);
}
.row-item .idx {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--accent-deep);
  padding-top: 8px;
}
.row-item .h3 {
  margin-bottom: 6px;
}
.row-item p {
  color: var(--muted);
}
.row-item .arrow {
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--text);
  transition: background 0.3s, color 0.3s, transform 0.4s var(--ease);
}
.row-item .arrow svg {
  width: 16px;
  height: 16px;
}
.row-item:hover .arrow {
  background: var(--ink);
  color: var(--paper);
  transform: rotate(-45deg);
}
.on-ink .rows,
.on-ink .row-item {
  border-color: var(--line-on-ink);
}
.on-ink .row-item p {
  color: rgba(246, 243, 236, 0.66);
}
.on-ink .row-item .arrow {
  border-color: rgba(246, 243, 236, 0.3);
  color: var(--paper);
}
.on-ink .row-item:hover .arrow {
  background: var(--paper);
  color: var(--ink);
}

/* ---------- case cards ---------- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 24px;
}
.case-card {
  grid-column: span 2;
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease);
}
.case-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 32px 56px -32px rgba(11, 22, 38, 0.4);
}
.case-card.is-wide {
  grid-column: span 3;
}
.case-media {
  aspect-ratio: 4 / 3;
  background: var(--paper-2);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.case-card.is-wide .case-media {
  aspect-ratio: 16 / 10;
}
.case-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.9s var(--ease);
}
.case-card:hover .case-media img {
  transform: scale(1.035);
}
.case-body {
  padding: 26px 26px 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.case-body .chips {
  margin-bottom: 2px;
}
.case-body .h3 {
  font-size: 21px;
}
.case-body p {
  color: var(--muted);
  font-size: 15px;
}
.case-body .link-arrow {
  margin-top: auto;
  padding-top: 8px;
}
.case-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* ---------- process timeline ---------- */
.process {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0;
  counter-reset: step;
  border-top: 1px solid var(--line-on-ink);
}
.step {
  padding: 32px 24px 8px 0;
  position: relative;
  counter-increment: step;
}
.step::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 1.2s var(--ease);
}
.is-visible .step::before {
  width: 100%;
}
.step:nth-child(2)::before {
  transition-delay: 0.15s;
}
.step:nth-child(3)::before {
  transition-delay: 0.3s;
}
.step:nth-child(4)::before {
  transition-delay: 0.45s;
}
.step:nth-child(5)::before {
  transition-delay: 0.6s;
}
.step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 18px;
}
.step .h4 {
  margin-bottom: 10px;
}
.step p {
  font-size: 14.5px;
  color: rgba(246, 243, 236, 0.66);
}
.step .step-dur {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(246, 243, 236, 0.5);
}

/* ---------- marquee (industries / stack) ---------- */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding-block: 18px;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.marquee-track {
  display: flex;
  gap: 48px;
  width: max-content;
  animation: marquee 40s linear infinite;
}
.marquee:hover .marquee-track {
  animation-play-state: paused;
}
.marquee-track span {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--muted);
  white-space: nowrap;
}
.marquee-track span::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.7;
}
@keyframes marquee {
  to {
    transform: translateX(-50%);
  }
}

/* ---------- feature split (image + copy) ---------- */
.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(32px, 6vw, 96px);
  align-items: center;
}
.split.is-reversed > :first-child {
  order: 2;
}
.split-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--paper-2);
}
.split-media img {
  width: 100%;
  height: auto;
}
.checklist li {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  align-items: flex-start;
}
.checklist li:last-child {
  border-bottom: 0;
}
.checklist svg {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  color: var(--accent);
  margin-top: 3px;
}
.checklist strong {
  display: block;
  font-weight: 600;
}
.checklist span {
  color: var(--muted);
  font-size: 15px;
}
.on-ink .checklist li {
  border-color: var(--line-on-ink);
}
.on-ink .checklist span {
  color: rgba(246, 243, 236, 0.66);
}

/* ---------- quote / vision ---------- */
.quote {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}
.quote-mark {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 140px;
  line-height: 0.7;
  color: var(--accent);
  opacity: 0.8;
}
.quote blockquote {
  margin: 0;
  font-size: clamp(22px, 2.6vw, 34px);
  line-height: 1.45;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.quote figcaption {
  margin-top: 24px;
  color: var(--muted);
  font-size: 15px;
}

/* ---------- CTA band ---------- */
.cta {
  border-radius: var(--radius-lg);
  background: var(--ink);
  color: var(--paper);
  padding: clamp(40px, 5vw, 72px);
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) auto;
  gap: 32px;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.cta::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -140px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(15, 165, 143, 0.35), transparent 65%);
  pointer-events: none;
}
.cta > * {
  position: relative;
  z-index: 1;
}
.cta .h2 {
  margin-bottom: 12px;
}
.cta p {
  color: rgba(246, 243, 236, 0.7);
  max-width: 52ch;
}
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.cta .btn-ghost {
  --btn-fg: var(--paper);
  border-color: rgba(246, 243, 236, 0.35);
}
.cta .btn-ghost:hover {
  border-color: var(--paper);
}

/* ---------- page hero (inner pages) ---------- */
.page-hero {
  padding-block: clamp(56px, 8vw, 104px) clamp(40px, 5vw, 72px);
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.page-hero .lead {
  margin-top: 24px;
  max-width: 62ch;
}
.page-hero .breadcrumb {
  display: flex;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 28px;
}
.page-hero .breadcrumb a:hover {
  color: var(--text);
}

/* ---------- case detail ---------- */
.case-detail {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(32px, 5vw, 80px);
  padding-block: clamp(56px, 7vw, 96px);
  border-bottom: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 24px);
}
.case-detail:last-of-type {
  border-bottom: 0;
}
.case-detail.is-reversed > .case-detail-media {
  order: 2;
}
.case-detail-media {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  align-self: start;
}
.case-detail-media img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--paper-2);
}
.case-detail-body .chips {
  margin-bottom: 20px;
}
.case-detail-body .h2 {
  margin-bottom: 16px;
}
.case-detail-body .lead {
  margin-bottom: 20px;
}
.case-intro {
  color: var(--muted);
  font-size: 15.5px;
  margin-bottom: 28px;
}
.case-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 8px 0 32px;
}
.fact {
  padding: 16px 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.fact .stat-value {
  font-size: 28px;
}
.fact .stat-label {
  margin-top: 6px;
  font-size: 13px;
}
.case-sections {
  display: grid;
  gap: 24px;
}
.case-section h4 {
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin-bottom: 8px;
}
.case-section p,
.case-section li {
  color: var(--muted);
  font-size: 15.5px;
}
.case-section ul li {
  padding-left: 18px;
  position: relative;
  margin-bottom: 6px;
}
.case-section ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 2px;
  background: var(--accent);
}
.case-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 32px;
}
.placeholder {
  background: var(--amber-soft);
  border-bottom: 1px dashed #c48c00;
  padding: 0 2px;
}

/* ---------- careers ---------- */
.jobs {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
}
.job {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 22px 26px;
  border-bottom: 1px solid var(--line);
  transition: background 0.25s;
}
.job:last-child {
  border-bottom: 0;
}
.job:hover {
  background: var(--paper);
}
.job .h4 {
  margin: 0;
}
.job .muted {
  font-size: 14px;
}
.jobs-head {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) minmax(0, 1fr) auto;
  gap: 16px;
  padding: 14px 26px;
  background: var(--paper-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.job-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.job-card .h3 {
  margin-bottom: 0;
}
.job-card .h3 a {
  transition: color 0.2s;
}
.job-card .h3 a:hover {
  color: var(--accent-deep);
}
.job-tagline {
  color: var(--muted);
  font-size: 15px;
}
.job-card .case-section h4 {
  margin-top: 6px;
}
.job-card .btn {
  align-self: flex-start;
  margin-top: auto;
}
.benefits {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}
.benefit {
  padding: 18px 16px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-weight: 600;
  font-size: 14px;
  text-align: center;
}
.values {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--line-on-ink);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.value {
  padding: 36px;
  border-right: 1px solid var(--line-on-ink);
  border-bottom: 1px solid var(--line-on-ink);
}
.value:nth-child(2n) {
  border-right: 0;
}
.value:nth-last-child(-n + 2) {
  border-bottom: 0;
}
.value .idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 14px;
}
.value .h3 {
  margin-bottom: 10px;
}
.value p {
  color: rgba(246, 243, 236, 0.66);
  font-size: 15px;
}

/* ---------- about / timeline ---------- */
.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  border-top: 1px solid var(--line);
}
.tl-item {
  padding-top: 24px;
  position: relative;
}
.tl-item::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
}
.tl-year {
  font-family: var(--font-num);
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}
.tl-item p {
  color: var(--muted);
  font-size: 15px;
}
.team-mix {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 48px;
}
.bar-row {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr) 48px;
  gap: 16px;
  align-items: center;
  font-size: 14.5px;
}
.bar {
  height: 8px;
  border-radius: 4px;
  background: var(--paper-2);
  overflow: hidden;
}
.bar i {
  display: block;
  height: 100%;
  width: 0;
  background: var(--accent);
  border-radius: 4px;
  transition: width 1.2s var(--ease);
}
.is-visible .bar i {
  width: var(--w);
}
.bar-row .num {
  text-align: right;
  font-weight: 600;
}

/* ---------- contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  gap: 32px;
  align-items: start;
}
.form {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 3vw, 40px);
}
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.field.is-full {
  grid-column: 1 / -1;
}
.field label {
  font-size: 14px;
  font-weight: 600;
}
.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 13px 14px;
  border-radius: 10px;
  border: 1px solid var(--line-strong);
  background: var(--paper);
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--white);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.field textarea {
  min-height: 140px;
  resize: vertical;
}
.field input[type="file"] {
  padding: 10px 12px;
  cursor: pointer;
}
.field input[type="file"]::file-selector-button {
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  background: var(--white);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 6px 14px;
  margin-right: 12px;
  cursor: pointer;
}
.field-hint {
  font-size: 13px;
  color: var(--muted);
}
.field .is-invalid {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(214, 69, 69, 0.14);
}
.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}
.form-error {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 10px;
  background: rgba(214, 69, 69, 0.1);
  color: var(--danger);
  font-weight: 600;
  font-size: 15px;
}
.form-sent {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-weight: 600;
  font-size: 15px;
}
.btn:disabled {
  opacity: 0.6;
  cursor: default;
  transform: none;
  box-shadow: none;
}
.form-note {
  font-size: 13px;
  color: var(--muted);
  margin-top: 14px;
}
.info-list li {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.info-list li:last-child {
  border-bottom: 0;
}
.info-list .card-icon {
  width: 40px;
  height: 40px;
  margin: 0;
  flex-shrink: 0;
}
.info-list .card-icon svg {
  width: 20px;
  height: 20px;
}
.info-list strong {
  display: block;
  font-size: 14px;
  margin-bottom: 2px;
}
.info-list span {
  color: var(--muted);
  font-size: 15px;
}

/* ---------- footer ---------- */
.site-footer {
  background: var(--ink);
  color: var(--paper);
  padding-block: 64px 28px;
  position: relative;
}
.site-footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--amber) 50%, transparent);
  opacity: 0.8;
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 40px clamp(32px, 6vw, 96px);
  padding-bottom: 44px;
  border-bottom: 1px solid var(--line-on-ink);
}
.footer-brand .brand {
  color: var(--paper);
}
.footer-brand .brand-cn {
  color: rgba(246, 243, 236, 0.6);
  border-color: var(--line-on-ink);
}
.footer-tag {
  margin-top: 18px;
  color: rgba(246, 243, 236, 0.66);
  max-width: 36ch;
  font-size: 15px;
}
.footer-mail {
  display: inline-block;
  margin-top: 14px;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper);
  border-bottom: 1px solid rgba(246, 243, 236, 0.3);
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}
.footer-mail:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(246, 243, 236, 0.5);
  margin-bottom: 16px;
}
.footer-col li {
  margin-bottom: 9px;
}
.footer-col a {
  color: rgba(246, 243, 236, 0.85);
  font-size: 15px;
  transition: color 0.2s;
}
.footer-col a:hover {
  color: var(--accent);
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-top: 22px;
  font-size: 13px;
  color: rgba(246, 243, 236, 0.45);
}
.footer-lang {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}
.footer-lang a {
  color: rgba(246, 243, 236, 0.6);
  transition: color 0.2s;
}
.footer-lang a:hover,
.footer-lang a[aria-current="true"] {
  color: var(--paper);
}
.footer-lang span {
  color: var(--line-on-ink);
}

/* ---------- reveal animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
.reveal-group > * {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal-group.is-visible > * {
  opacity: 1;
  transform: none;
}
.reveal-group.is-visible > :nth-child(1) {
  transition-delay: 0.05s;
}
.reveal-group.is-visible > :nth-child(2) {
  transition-delay: 0.14s;
}
.reveal-group.is-visible > :nth-child(3) {
  transition-delay: 0.23s;
}
.reveal-group.is-visible > :nth-child(4) {
  transition-delay: 0.32s;
}
.reveal-group.is-visible > :nth-child(5) {
  transition-delay: 0.41s;
}
.reveal-group.is-visible > :nth-child(6) {
  transition-delay: 0.5s;
}
.hero .reveal-group.is-visible > * {
  transition-duration: 1.1s;
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
  .reveal,
  .reveal-group > * {
    opacity: 1;
    transform: none;
  }
}

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .row-item {
    grid-template-columns: 70px minmax(0, 1fr) 40px;
  }
  .row-item p {
    grid-column: 2;
  }
  .row-item .arrow {
    grid-row: 1;
    grid-column: 3;
  }
  .process {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 24px;
  }
  .step {
    border-top: 1px solid var(--line-on-ink);
  }
  .process {
    border-top: 0;
  }
  .benefits {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 900px) {
  :root {
    --header-h: 64px;
  }
  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 16px var(--gutter) 24px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s, transform 0.3s var(--ease);
    margin-left: 0;
  }
  body.nav-open .nav {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }
  .nav a {
    padding: 14px 10px;
    font-size: 17px;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
  }
  .nav a[aria-current="page"]::after {
    display: none;
  }
  .header-actions {
    margin-left: auto;
  }
  .header-actions .btn {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .brand-cn {
    display: none;
  }
  .hero {
    min-height: 0;
  }
  .hero-grid,
  .split,
  .grid-2,
  .grid-3,
  .section-head,
  .contact-grid,
  .case-detail,
  .team-mix,
  .values {
    grid-template-columns: 1fr;
  }
  .split.is-reversed > :first-child,
  .case-detail.is-reversed > .case-detail-media {
    order: 0;
  }
  .hero-art {
    min-height: 0;
    max-width: 520px;
    margin: 0 auto;
  }
  .stats {
    grid-template-columns: 1fr;
  }
  .case-grid {
    grid-template-columns: 1fr;
  }
  .case-card,
  .case-card.is-wide {
    grid-column: auto;
  }
  .case-card.is-wide .case-media {
    aspect-ratio: 4 / 3;
  }
  .case-detail-media {
    position: static;
  }
  .cta {
    grid-template-columns: 1fr;
  }
  .quote {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .quote-mark {
    font-size: 90px;
  }
  .jobs-head {
    display: none;
  }
  .job {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  .value {
    border-right: 0;
  }
  .value:nth-last-child(-n + 2) {
    border-bottom: 1px solid var(--line-on-ink);
  }
  .value:last-child {
    border-bottom: 0;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px 24px;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 600px) {
  .grid-4,
  .stats,
  .process,
  .benefits,
  .timeline,
  .case-facts {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    gap: 32px 20px;
  }
  .row-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .row-item .arrow {
    display: none;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .bar-row {
    grid-template-columns: 110px minmax(0, 1fr) 44px;
  }
}