/* Chiye Vision — site tokens & layout
   Paper / Ink / Warm Gray / Charcoal. No SaaS purple, no glass stack. */

:root {
  --paper: #f5f3ef;
  --paper-2: #ebe7e0;
  --ink: #121211;
  --charcoal: #2a2a28;
  --warm: #9a948a;
  --warm-strong: #534e46;
  --line: rgba(18, 18, 17, 0.14);
  --line-on-dark: rgba(245, 243, 239, 0.16);
  --focus: #c4a574;
  --max: 1280px;
  --max-prose: 40rem;
  --pad: clamp(1.25rem, 4vw, 3rem);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --t: 240ms;
  --font-cn: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-en: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-cn);
  font-size: 17px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  font-weight: 400;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  transition: color var(--t) var(--ease), opacity var(--t) var(--ease);
}

a:hover { color: var(--warm-strong); }
a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 0.6rem 1rem;
  z-index: 100;
}
.skip:focus { left: 0; }

.en {
  font-family: var(--font-en);
  letter-spacing: 0.04em;
}

.eyebrow {
  font-family: var(--font-en);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--warm-strong);
  margin: 0 0 1.15rem;
}

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

/* ——— Nav ——— */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--paper);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t) var(--ease);
}
.site-nav.is-scrolled { border-bottom-color: var(--line); }

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.25rem;
  width: min(var(--max), calc(100% - 2 * var(--pad)));
  margin-inline: auto;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.08rem;
  text-decoration: none;
  line-height: 1.15;
}
.brand:hover { color: var(--ink); opacity: 0.75; }
.brand__cn {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}
.brand__en {
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: lowercase;
  color: var(--warm-strong);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--charcoal);
  padding: 0.35rem 0;
  border-bottom: 1px solid transparent;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}
.nav-links a:hover {
  color: var(--ink);
  border-bottom-color: rgba(18, 18, 17, 0.35);
}
.nav-links .nav-contact {
  border: 0;
  background: none;
  padding: 0.35rem 0;
  font: inherit;
  font-size: 0.95rem;
  color: var(--charcoal);
  cursor: pointer;
  border-bottom: 1px solid transparent;
}
.nav-links .nav-contact:hover {
  color: var(--ink);
  border-bottom-color: rgba(18, 18, 17, 0.35);
}
.nav-links a[aria-current="page"],
.nav-links a.is-active {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 1.1rem;
  height: 1px;
  margin: 0.28rem auto;
  background: currentColor;
}

@media (max-width: 820px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; flex-direction: column; }
  .nav-links {
    display: none;
    position: absolute;
    left: 0; right: 0; top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem var(--pad) 1rem;
  }
  .site-nav.is-open .nav-links { display: flex; }
  .nav-links a {
    padding: 0.85rem 0.25rem;
    border-bottom: 1px solid var(--line);
  }
}

/* ——— Buttons ——— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 2.85rem;
  padding: 0.7rem 1.35rem;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font-family: inherit;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition:
    background var(--t) var(--ease),
    color var(--t) var(--ease),
    border-color var(--t) var(--ease),
    transform 180ms var(--ease);
}
.btn:hover {
  background: var(--charcoal);
  color: var(--paper);
  border-color: var(--charcoal);
}
.btn:active { transform: translateY(1px); }
.btn:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}
.btn--ghost {
  background: transparent;
  color: var(--ink);
}
.btn--ghost:hover {
  background: var(--ink);
  color: var(--paper);
}
.btn--on-dark {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}
.btn--on-dark:hover {
  background: transparent;
  color: var(--paper);
  border-color: var(--paper);
}
.btn--ghost-on-dark {
  background: transparent;
  color: var(--paper);
  border-color: var(--line-on-dark);
}
.btn--ghost-on-dark:hover {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--ink);
  border-bottom: 1px solid currentColor;
  padding-bottom: 0.1rem;
}
.text-link .arrow {
  display: inline-block;
  transition: transform var(--t) var(--ease);
}
.text-link:hover .arrow { transform: translateX(4px); }
.text-link--on-dark { color: var(--paper); }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem 1.1rem;
}

/* ——— Hero ——— */
.hero {
  padding: clamp(2.25rem, 6vw, 4.75rem) 0 clamp(3rem, 8vw, 5.5rem);
}
.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.hero__brand {
  font-size: clamp(2.9rem, 7.5vw, 5.6rem);
  line-height: 0.94;
  letter-spacing: -0.03em;
  font-weight: 700;
  margin: 0 0 0.2rem;
}
.hero__brand .en {
  display: block;
  margin-top: 0.45rem;
  font-size: 0.34em;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--warm-strong);
  text-transform: lowercase;
}
.hero__value {
  margin: 2rem 0 1.15rem;
  font-size: clamp(1.5rem, 3.2vw, 2.2rem);
  line-height: 1.28;
  font-weight: 600;
  letter-spacing: -0.02em;
  max-width: 14em;
}
.hero__desc {
  margin: 0 0 2rem;
  color: var(--charcoal);
  max-width: 28em;
  font-size: 1.06rem;
  line-height: 1.8;
}
.hero__desc span { display: block; }

.hero__visual {
  position: relative;
  background: var(--paper-2);
  overflow: visible;
  min-height: clamp(280px, 40vw, 540px);
  aspect-ratio: auto;
  border: 1px solid var(--line);
  padding: clamp(0.85rem, 2vw, 1.25rem);
}
.hero__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  min-height: 0;
  transition: transform 400ms var(--ease);
}
.hero__visual:hover img { transform: none; }
.hero__visual-caption {
  position: static;
  margin-top: 0.85rem;
  font-family: var(--font-en);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--warm-strong);
  text-shadow: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
}

@media (max-width: 860px) {
  .hero { padding-top: 1.5rem; }
  .hero__grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
    align-items: start;
  }
  .hero__visual {
    order: -1;
    min-height: 0;
  }
  .hero__value { margin-top: 1.35rem; }
}

/* ——— CHIYE FRAME ——— */
.chiye-frame {
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--ink);
  overflow: hidden;
}
.chiye-frame__meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.35rem 1rem;
  padding: 0.55rem 0.7rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-en);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--warm-strong);
  background: var(--paper);
}
.chiye-frame__meta strong {
  color: var(--ink);
  font-weight: 600;
}
.chiye-frame__shot {
  position: relative;
  background: #ebe7e0;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}
.chiye-frame__shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  transition: transform 320ms var(--ease);
}
.chiye-frame__foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.25rem 0.75rem;
  padding: 0.45rem 0.7rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-en);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--warm-strong);
}

/* ——— Project Wall (Hero) ——— */
.project-wall {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  grid-template-rows: auto auto;
  gap: 0.65rem;
  min-height: 280px;
}
.project-wall .chiye-frame:nth-child(1) {
  grid-row: 1 / 3;
}
.project-wall .chiye-frame:nth-child(1) .chiye-frame__shot {
  aspect-ratio: 4 / 5;
  min-height: 280px;
}
.project-wall .chiye-frame:nth-child(2) .chiye-frame__shot,
.project-wall .chiye-frame:nth-child(3) .chiye-frame__shot {
  aspect-ratio: 16 / 9;
}
.project-wall__tag {
  position: absolute;
  right: 0.5rem;
  bottom: 0.5rem;
  z-index: 2;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-en);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.4rem 0.55rem;
}

@media (max-width: 860px) {
  .project-wall {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
  }
  .project-wall .chiye-frame:nth-child(1) {
    grid-column: 1 / -1;
    grid-row: auto;
  }
  .project-wall .chiye-frame:nth-child(1) .chiye-frame__shot {
    aspect-ratio: 16 / 10;
    min-height: 0;
  }
}

/* ——— Case product composition ——— */
.case-compose {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 0.55rem;
}
.case-compose .chiye-frame:first-child {
  grid-row: 1 / 3;
}
.case-compose .chiye-frame:first-child .chiye-frame__shot {
  aspect-ratio: 4 / 5;
}
.case-compose .chiye-frame:not(:first-child) .chiye-frame__shot {
  aspect-ratio: 16 / 10;
}
@media (max-width: 760px) {
  .case-compose {
    grid-template-columns: 1fr;
  }
  .case-compose .chiye-frame:first-child {
    grid-row: auto;
  }
  .case-compose .chiye-frame:first-child .chiye-frame__shot {
    aspect-ratio: 16 / 10;
  }
}

.case {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(1.5rem, 4vw, 3.25rem);
  padding: clamp(2.25rem, 4.5vw, 3.25rem) 0;
  border-top: 1px solid var(--line);
  align-items: center;
  text-decoration: none;
  color: inherit;
}
a.case:hover .chiye-frame__shot img { transform: scale(1.015); }
a.case:hover .case__more .arrow { transform: translateX(5px); }
a.case:hover .case__index { color: var(--ink); }
a.case:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 6px;
}
.case__more {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.85rem;
  font-family: var(--font-en);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-bottom: 1px solid transparent;
  padding-bottom: 0.1rem;
  transition: border-color var(--t) var(--ease);
}
a.case:hover .case__more {
  border-bottom-color: var(--ink);
}
.case__more .arrow {
  display: inline-block;
  transition: transform var(--t) var(--ease);
}
.case__code {
  font-family: var(--font-en);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--warm-strong);
  margin: 0 0 0.35rem;
}
.case__summary {
  margin: 0;
  max-width: 36em;
  color: var(--charcoal);
  line-height: 1.75;
  font-size: 1.02rem;
}

/* ——— GEO concept UI ——— */
.geo-demo {
  border: 1px solid var(--ink);
  background: var(--paper);
  display: grid;
  grid-template-columns: 1fr;
  overflow: hidden;
}
.geo-demo__head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-en);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--warm-strong);
}
.geo-demo__head strong { color: var(--ink); }
.geo-demo__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
@media (min-width: 720px) {
  .geo-demo__body { grid-template-columns: 1.05fr 0.95fr; }
}
.geo-demo__pane {
  padding: 1rem 0.95rem 1.15rem;
}
.geo-demo__pane + .geo-demo__pane {
  border-top: 1px solid var(--line);
}
@media (min-width: 720px) {
  .geo-demo__pane + .geo-demo__pane {
    border-top: none;
    border-left: 1px solid var(--line);
  }
}
.geo-demo__label {
  font-family: var(--font-en);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--warm);
  margin: 0 0 0.75rem;
}
.geo-demo__q {
  margin: 0;
  padding: 0.85rem 0.9rem;
  background: var(--paper-2);
  border: 1px solid var(--line);
  font-size: 0.98rem;
  line-height: 1.55;
  color: var(--ink);
}
.geo-demo__answer {
  margin: 0 0 0.85rem;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--charcoal);
}
.geo-demo__tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.geo-demo__tags li {
  font-family: var(--font-en);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--line);
  padding: 0.35rem 0.5rem;
  color: var(--ink);
}
.geo-demo__note {
  margin: 0;
  padding: 0.55rem 0.85rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-en);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--warm-strong);
  background: var(--paper-2);
}

/* ——— Sections ——— */
.section {
  padding: clamp(3.5rem, 9vw, 7rem) 0;
}
.section--tight { padding: clamp(2.5rem, 6vw, 4.5rem) 0; }
.section--dark {
  background: var(--ink);
  color: var(--paper);
}
.section--paper-2 { background: var(--paper-2); }
.section__head {
  margin-bottom: clamp(2rem, 5vw, 3.25rem);
  max-width: 36rem;
}
.section__title {
  margin: 0;
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 650;
}
.section__title .en {
  display: block;
  margin-bottom: 0.45rem;
  font-size: 0.38em;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--warm-strong);
}
.section--dark .section__title .en,
.manifesto__sign,
.section--dark .eyebrow {
  color: var(--warm);
}
.capability__num,
.case__index,
.case__type,
.case__label,
.geo-band__aside,
.tech-aside,
.phase__n,
.steps__n,
.eyebrow {
  color: var(--warm-strong);
}

/* ——— Capabilities ——— */
.capability-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}
.capability {
  display: grid;
  grid-template-columns: 3.75rem 1fr;
  gap: 0.85rem 1.35rem;
  padding: clamp(1.65rem, 3.5vw, 2.4rem) 0;
  border-bottom: 1px solid var(--line);
  transition: background var(--t) var(--ease);
}
.capability:hover {
  background: rgba(18, 18, 17, 0.02);
}
.capability:hover .capability__title {
  letter-spacing: -0.005em;
}
.capability:hover .capability__num {
  color: var(--ink);
}
.capability__num {
  font-family: var(--font-en);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--warm);
  padding-top: 0.45rem;
}
.capability__title {
  margin: 0 0 0.65rem;
  font-size: clamp(1.35rem, 2.5vw, 1.7rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.2;
  transition: letter-spacing var(--t) var(--ease);
}
.capability__body {
  margin: 0;
  color: var(--charcoal);
  max-width: 36em;
  font-size: 1.02rem;
  line-height: 1.8;
}
.capability__body span { display: block; }
.capability--geo .capability__title { color: var(--ink); }
.capability__link { margin: 0.85rem 0 0; }

@media (min-width: 900px) {
  .capability-list {
    grid-template-columns: 1fr 1fr;
    gap: 0 3rem;
    border-top: none;
  }
  .capability {
    border-top: 1px solid var(--line);
  }
  .capability:nth-child(1),
  .capability:nth-child(2) { border-top: 1px solid var(--line); }
}

/* ——— Manifesto ——— */
.manifesto {
  padding: clamp(5rem, 13vw, 9.5rem) 0;
  text-align: left;
  color: #ebe7e0;
  background:
    linear-gradient(180deg, #161513 0%, #121211 48%, #0e0d0c 100%);
}
.manifesto__quote {
  margin: 0;
  max-width: 15em;
  font-size: clamp(1.85rem, 4.9vw, 3.25rem);
  line-height: 1.32;
  font-weight: 600;
  letter-spacing: -0.025em;
  color: #ebe7e0;
}
.manifesto__quote span { display: block; }
.manifesto__quote span:last-child {
  margin-top: 0.15em;
}
.manifesto__sign {
  margin-top: 2.75rem;
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--warm);
}

/* ——— Cases ——— */
.case-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.case:last-child { border-bottom: 1px solid var(--line); }
.case__index {
  font-family: var(--font-en);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--warm-strong);
  margin: 0 0 0.35rem;
}
.case__type {
  margin: 0 0 1rem;
  color: var(--warm-strong);
  font-size: 0.92rem;
  line-height: 1.5;
}
.case__name {
  margin: 0 0 0.45rem;
  font-size: clamp(1.4rem, 2.6vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.015em;
}
.case-compose--single {
  grid-template-columns: 1fr;
}
.case-compose--single .chiye-frame:first-child {
  grid-row: auto;
}
.chiye-frame__shot--wide {
  aspect-ratio: 16 / 10 !important;
}

@media (max-width: 760px) {
  .case { grid-template-columns: 1fr; align-items: start; }
}

/* ——— GEO band ——— */
.geo-band {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: start;
}
.geo-band__title {
  margin: 0 0 1.35rem;
  font-size: clamp(1.65rem, 3.8vw, 2.55rem);
  line-height: 1.22;
  font-weight: 700;
  letter-spacing: -0.02em;
  max-width: 14em;
}
.geo-band__title span { display: block; }
.geo-band__body {
  margin: 0 0 1rem;
  color: var(--charcoal);
  max-width: 38em;
  line-height: 1.75;
}
.geo-band__body strong {
  color: var(--ink);
  font-weight: 600;
}
.geo-band__cta { margin: 1.65rem 0 0; }

.geo-band__note {
  margin: 1.25rem 0 0;
  color: var(--warm-strong);
  font-size: 0.9rem;
  line-height: 1.65;
}

@media (max-width: 800px) {
  .geo-band { grid-template-columns: 1fr; }
}

/* ——— CTA / Footer ——— */
.final-cta {
  padding: clamp(4rem, 10vw, 7rem) 0 clamp(2rem, 5vw, 3rem);
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
}
.final-cta__bg {
  position: absolute;
  inset: 0;
  opacity: 0.72;
  pointer-events: none;
}
.final-cta__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(18,18,17,0.35) 0%, rgba(18,18,17,0.55) 55%, rgba(18,18,17,0.82) 100%);
}
.final-cta__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.final-cta__inner { position: relative; z-index: 1; }
.final-cta__title {
  margin: 0 0 1.5rem;
  font-size: clamp(1.75rem, 4.5vw, 2.85rem);
  line-height: 1.2;
  font-weight: 650;
  letter-spacing: -0.02em;
  max-width: 12em;
}

.site-footer {
  background: var(--ink);
  color: rgba(245, 243, 239, 0.72);
  padding: 0 0 2.5rem;
  border-top: 1px solid var(--line-on-dark);
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.5rem;
  padding-top: 2rem;
  font-size: 0.88rem;
}
.site-footer a { color: var(--paper); text-decoration: none; }
.site-footer a:hover { color: var(--warm); }
.site-footer__brand {
  color: var(--paper);
  font-weight: 600;
  letter-spacing: 0.06em;
}

/* ——— Contact ——— */
.contact-block {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-on-dark);
  max-width: 36em;
}
.contact-block p { margin: 0 0 0.75rem; color: rgba(245, 243, 239, 0.78); }

/* ——— GEO page ——— */
.page-hero {
  padding: clamp(3rem, 8vw, 5.5rem) 0 clamp(2.5rem, 6vw, 4rem);
}
.page-hero__title {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5.5vw, 3.6rem);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.025em;
  max-width: 12em;
}
.page-hero__title span { display: block; }
.page-hero__lead {
  margin: 0;
  max-width: 34em;
  color: var(--charcoal);
  font-size: 1.08rem;
}

.path-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem 2.5rem;
}
.path-card {
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
}
.path-card h3 {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  font-weight: 650;
}
.path-flow {
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--charcoal);
}
.path-flow li {
  padding: 0.35rem 0;
  padding-left: 1.1rem;
  position: relative;
}
.path-flow li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85rem;
  width: 0.45rem;
  height: 1px;
  background: var(--warm-strong);
}
.path-card--new {
  background: var(--paper-2);
  padding: 1.5rem;
  border-top: none;
}

@media (max-width: 720px) {
  .path-compare { grid-template-columns: 1fr; }
}

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}
.steps li {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
}
.steps__n {
  font-family: var(--font-en);
  color: var(--warm-strong);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  padding-top: 0.15rem;
}
.steps__t { margin: 0; font-weight: 600; }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem 3rem;
}
.two-col h3 {
  margin: 0 0 0.65rem;
  font-size: 1.15rem;
}
.two-col p {
  margin: 0;
  color: var(--charcoal);
}
@media (max-width: 720px) {
  .two-col { grid-template-columns: 1fr; }
}

.phase-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}
.phase {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 1rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
}
.phase__n {
  font-family: var(--font-en);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--warm-strong);
}
.phase__t { margin: 0; font-weight: 600; font-size: 1.05rem; }

@media (max-width: 560px) {
  .phase { grid-template-columns: 1fr; gap: 0.35rem; }
}

.prose-note {
  margin: 1.25rem 0 0;
  color: var(--charcoal);
  max-width: 40em;
}
.tech-aside {
  margin-top: 1.5rem;
  padding: 1rem 0 0;
  border-top: 1px solid var(--line);
  font-size: 0.88rem;
  color: var(--warm-strong);
  max-width: 42em;
}

/* ——— Reveal ——— */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 400ms var(--ease), transform 400ms var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .text-link .arrow, .hero__visual img, .case__media img { transition: none; }
}

/* ——— Utility ——— */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

/* =========================================================
   SHOWROOM COMPOSITION (homepage rewrite)
   ========================================================= */

.hero__grid {
  align-items: center;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.15fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
}
.hero__visual { display: none; }

/* Project Portal */
.portal {
  position: relative;
  height: clamp(320px, 42vw, 520px);
  margin-right: clamp(-0.5rem, -2vw, -1.5rem);
}
.portal__win {
  position: absolute;
  display: block;
  overflow: hidden;
  background: #1a1612;
  text-decoration: none;
  color: var(--paper);
  box-shadow: 0 18px 50px rgba(18, 18, 17, 0.18);
  transition: transform 280ms var(--ease), z-index 0s, box-shadow 280ms var(--ease);
}
.portal__win img {
  width: 120%;
  height: 120%;
  max-width: none;
  object-fit: cover;
  object-position: left top;
  transform: translate(-6%, -4%);
  transition: transform 360ms var(--ease);
}
.portal__win--da {
  width: 72%;
  height: 78%;
  left: 0;
  top: 6%;
  z-index: 2;
}
.portal__win--cl {
  width: 48%;
  height: 46%;
  right: -2%;
  top: 0;
  z-index: 3;
}
.portal__win--geo {
  width: 42%;
  height: 40%;
  right: 4%;
  bottom: 2%;
  z-index: 4;
}
.portal__veil {
  position: absolute;
  inset: auto 0 0 0;
  padding: 0.85rem 1rem;
  background: linear-gradient(180deg, transparent, rgba(12,11,10,0.82));
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 240ms var(--ease), transform 240ms var(--ease);
}
.portal__name {
  font-size: 0.95rem;
  font-weight: 650;
}
.portal__go {
  font-family: var(--font-en);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(245,243,239,0.8);
}
.portal__win:hover,
.portal__win:focus-visible {
  z-index: 6;
  transform: translateY(-4px) scale(1.015);
  box-shadow: 0 22px 60px rgba(18, 18, 17, 0.28);
  outline: none;
}
.portal__win:hover img,
.portal__win:focus-visible img {
  transform: translate(-4%, -2%) scale(1.02);
}
.portal__win:hover .portal__veil,
.portal__win:focus-visible .portal__veil {
  opacity: 1;
  transform: none;
}

@media (max-width: 860px) {
  .portal {
    order: -1;
    height: 300px;
    margin-right: 0;
  }
  .portal__win--da { width: 78%; height: 70%; left: 0; top: 18%; }
  .portal__win--cl { width: 55%; height: 42%; right: 0; top: 0; }
  .portal__win--geo { width: 50%; height: 36%; right: 2%; bottom: 0; }
  .portal__veil { opacity: 1; transform: none; padding: 0.55rem 0.7rem; }
  .portal__name { font-size: 0.82rem; }
}

/* Capabilities interactive index */
.cap-index {
  padding: clamp(3rem, 8vw, 5.5rem) 0;
}
.cap-index__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: stretch;
}
.cap-index__title {
  margin: 0 0 1.75rem;
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  letter-spacing: -0.02em;
  font-weight: 700;
}
.cap-nav {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.cap-nav__item {
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  padding: 1.05rem 0.15rem;
  cursor: pointer;
  color: var(--charcoal);
  transition: color var(--t) var(--ease), padding-left var(--t) var(--ease);
}
.cap-nav__item:hover,
.cap-nav__item.is-active {
  color: var(--ink);
  padding-left: 0.45rem;
}
.cap-nav__en {
  display: block;
  font-family: var(--font-en);
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  letter-spacing: 0.02em;
  font-weight: 650;
}
.cap-nav__zh {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.92rem;
  color: var(--warm-strong);
}
.cap-nav__item.is-active .cap-nav__zh { color: var(--charcoal); }
.cap-stage {
  position: relative;
  min-height: 320px;
}
.cap-panel[hidden] { display: none !important; }
.cap-panel__media {
  display: block;
  overflow: hidden;
  background: #1a1612;
  aspect-ratio: 16 / 10;
  margin-bottom: 1rem;
}
.cap-panel__media img {
  width: 108%;
  height: 108%;
  max-width: none;
  object-fit: cover;
  object-position: left top;
  transform: translate(-3%, -2%);
  transition: transform 360ms var(--ease);
}
.cap-panel__media:hover img { transform: translate(-1%, 0) scale(1.02); }
.cap-panel__text {
  margin: 0 0 0.85rem;
  color: var(--charcoal);
  max-width: 34em;
  line-height: 1.7;
  font-size: 1.05rem;
}

@media (max-width: 860px) {
  .cap-index__grid { grid-template-columns: 1fr; }
  .cap-stage { min-height: 0; }
}

/* Manifesto tighter */
.manifesto--tight {
  padding: clamp(3.25rem, 8vw, 5.75rem) 0;
}
.manifesto--tight .manifesto__quote {
  font-size: clamp(1.55rem, 3.8vw, 2.55rem);
  max-width: 14em;
  line-height: 1.3;
}
.manifesto--tight .manifesto__sign { margin-top: 1.75rem; }

/* Featured asymmetric showroom */
.work-show {
  padding: clamp(3.5rem, 9vw, 6.5rem) 0 clamp(2rem, 5vw, 3rem);
}
.work-show__head { margin-bottom: clamp(1.75rem, 4vw, 2.75rem); }
.work-show__title {
  margin: 0;
  font-size: clamp(1.8rem, 3.8vw, 2.6rem);
  letter-spacing: -0.02em;
  font-weight: 700;
}
.feat {
  display: grid;
  text-decoration: none;
  color: inherit;
  margin-bottom: clamp(2.5rem, 7vw, 5rem);
  transition: opacity var(--t) var(--ease);
}
.feat:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 6px;
}
.feat__visual {
  position: relative;
  overflow: hidden;
  background: #161310;
}
.feat__visual > img:first-child {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: left top;
  display: block;
  transition: transform 380ms var(--ease);
}
.feat__float {
  position: absolute;
  width: min(42%, 360px);
  right: 6%;
  bottom: -8%;
  box-shadow: 0 16px 40px rgba(0,0,0,0.28);
  transition: transform 380ms var(--ease);
}
.feat__copy { padding-top: 1.15rem; max-width: 36em; }
.feat__code {
  margin: 0 0 0.45rem;
  font-family: var(--font-en);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--warm-strong);
}
.feat__name {
  margin: 0 0 0.35rem;
  font-size: clamp(1.55rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.feat__type {
  margin: 0 0 0.85rem;
  font-family: var(--font-en);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--warm-strong);
}
.feat__line {
  margin: 0 0 1rem;
  color: var(--charcoal);
  font-size: 1.05rem;
  line-height: 1.65;
}
.feat__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-en);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-bottom: 1px solid transparent;
  transition: border-color var(--t) var(--ease), transform var(--t) var(--ease);
}
.feat__cta--static { margin-top: 0.5rem; }

.feat--hero {
  grid-template-columns: 1fr;
}
.feat--hero .feat__visual {
  aspect-ratio: 16 / 9;
  margin-bottom: 0.25rem;
}
.feat--wide {
  grid-template-columns: 1.35fr 0.75fr;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  align-items: end;
}
.feat--wide .feat__visual { aspect-ratio: 16 / 10; }
.feat--wide .feat__copy { padding-top: 0; padding-bottom: 0.5rem; }

.feat--brand {
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  align-items: center;
  background: var(--ink);
  color: var(--paper);
  padding: clamp(1.5rem, 4vw, 2.75rem);
  margin-bottom: 0;
}
.feat--brand .feat__code,
.feat--brand .feat__line { color: rgba(245,243,239,0.72); }
.feat--brand .feat__cta { color: var(--paper); }
.feat__brand-type {
  display: flex;
  flex-direction: column;
  font-size: clamp(3rem, 8vw, 5.5rem);
  line-height: 0.92;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.feat:hover .feat__visual > img:first-child { transform: scale(1.015); }
.feat:hover .feat__float { transform: translateY(-8px) scale(1.02); }
.feat:hover .feat__cta {
  border-bottom-color: currentColor;
  transform: translateX(3px);
}

@media (max-width: 860px) {
  .feat--wide,
  .feat--brand { grid-template-columns: 1fr; }
  .feat__float { width: 48%; bottom: -6%; }
  .feat--brand .feat__brand-type { font-size: clamp(2.6rem, 14vw, 4rem); margin-bottom: 0.5rem; }
}

/* GEO scenario */
.geo-scene {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--paper-2);
  padding: clamp(3.5rem, 9vw, 6rem) 0;
  border-top: 1px solid var(--line);
  transition: background var(--t) var(--ease);
}
.geo-scene:hover { background: #e6e1d8; }
.geo-scene:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: -4px;
}
.geo-scene__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}
.geo-scene__title {
  margin: 0 0 1rem;
  font-size: clamp(1.55rem, 3.5vw, 2.35rem);
  line-height: 1.22;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.geo-scene__title span { display: block; }
.geo-scene__sub {
  margin: 0 0 1.25rem;
  color: var(--charcoal);
  max-width: 30em;
  line-height: 1.7;
}
.geo-scene__demo {
  background: var(--paper);
  border: 1px solid var(--ink);
  padding: 1rem;
}
.geo-scene__badge {
  font-family: var(--font-en);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--warm-strong);
  margin-bottom: 0.85rem;
}
.geo-scene__k {
  display: block;
  font-family: var(--font-en);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--warm);
  margin-bottom: 0.4rem;
}
.geo-scene__q,
.geo-scene__a {
  padding: 0.85rem 0;
}
.geo-scene__q { border-bottom: 1px solid var(--line); }
.geo-scene__q p,
.geo-scene__a p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.55;
}
.geo-scene__ans { color: var(--ink); }
.geo-mark {
  background: rgba(28, 26, 23, 0.09);
  color: var(--ink);
  font-weight: 600;
  padding: 0.05em 0.22em;
}
.geo-scene__cite {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  margin-top: 0.75rem !important;
  padding: 0.55rem 0.65rem;
  background: var(--paper-2);
  border-left: 2px solid var(--ink);
  font-size: 0.82rem !important;
  color: var(--charcoal);
}
.geo-cite__tag {
  flex: 0 0 auto;
  font-family: var(--font-en);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
}
.geo-scene__a ul {
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.geo-scene__a li {
  font-family: var(--font-en);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--line);
  padding: 0.3rem 0.45rem;
}
@media (max-width: 800px) {
  .geo-scene__inner { grid-template-columns: 1fr; }
}

/* Case detail pages */
.case-page {
  padding: clamp(2.5rem, 6vw, 4rem) 0 4rem;
}
.case-page__title {
  margin: 0 0 0.5rem;
  font-size: clamp(2rem, 5vw, 3.2rem);
  letter-spacing: -0.025em;
  font-weight: 700;
}
.case-page__type {
  margin: 0 0 1rem;
  font-family: var(--font-en);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--warm-strong);
}
.case-page__lead {
  margin: 0 0 2rem;
  max-width: 40em;
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--charcoal);
}
.case-page__hero {
  margin: 0 0 2rem;
  overflow: hidden;
  background: #161310;
}
.case-page__hero img {
  width: 100%;
  display: block;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}
.case-page__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem 2.5rem;
  margin-bottom: 2rem;
}
.case-page__grid h2 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}
.case-page__grid p {
  margin: 0;
  color: var(--charcoal);
  line-height: 1.7;
}
.case-page__shots {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.case-page__shots img {
  width: 100%;
  display: block;
  object-fit: cover;
  aspect-ratio: 16 / 10;
  background: #161310;
}
.case-page__note {
  color: var(--warm-strong);
  font-size: 0.9rem;
}
@media (max-width: 720px) {
  .case-page__grid,
  .case-page__shots { grid-template-columns: 1fr; }
}