:root {
  --ink: #16191c;
  --ink-soft: #667078;
  --paper: #f7f6f2;
  --white: #ffffff;
  --line: rgba(22, 25, 28, 0.12);
  --copper: #a35f3e;
  --wa: #177a45;
  --header-h: 72px;
  --sans: "IBM Plex Sans SC", "IBM Plex Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  --en: "IBM Plex Sans", "IBM Plex Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.65;
  background: var(--paper);
  overflow-x: hidden;
}

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

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

button {
  font: inherit;
}

p,
h1,
h2,
h3 {
  margin-top: 0;
}

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

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 100;
  background: var(--ink);
  color: #fff;
  padding: 8px 12px;
}

.skip:focus {
  left: 12px;
  top: 12px;
}

.shell {
  width: min(1120px, calc(100% - 64px));
  margin-inline: auto;
}

.eyebrow {
  margin: 0 0 16px;
  font-family: var(--en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
}

.eyebrow.dark {
  color: var(--copper);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border: 1px solid var(--ink);
  font-size: 14px;
  font-weight: 600;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

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

.btn-ink:hover {
  background: transparent;
  color: var(--ink);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
}

.btn-ghost:hover {
  background: var(--ink);
  color: #fff;
}

.btn-ghost-dark {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
}

.btn-ghost-dark:hover {
  background: #fff;
  color: var(--ink);
}

.btn-wa {
  background: var(--wa);
  border-color: var(--wa);
  color: #fff;
}

.btn-wa:hover {
  filter: brightness(0.92);
  color: #fff;
}

/* Header */
.header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--header-h);
  background: rgba(247, 246, 242, 0.94);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.header.is-scrolled {
  background: var(--paper);
  border-bottom-color: var(--line);
}

.header-inner {
  width: min(1200px, calc(100% - 48px));
  height: 100%;
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 28px;
}

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

.brand img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  background: #fff;
  border: 1px solid var(--line);
  padding: 4px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.brand-text strong {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
}

.brand-text em {
  font-family: var(--en);
  font-style: normal;
  font-size: 10px;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav a {
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color 0.2s ease;
}

.nav a:hover {
  color: var(--ink);
}

.nav a[aria-current="page"] {
  color: var(--ink);
  box-shadow: inset 0 -1px 0 var(--ink);
}

.header-end {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-toggle {
  display: none;
  min-height: 40px;
  padding: 0 12px;
  border: 1px solid var(--ink);
  background: transparent;
  cursor: pointer;
}

/* Hero — centered to match homepage shell width, equal 1:1 split */
.hero {
  width: min(1120px, calc(100% - 64px));
  margin: var(--header-h) auto 0;
  min-height: 640px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  background: var(--ink);
  overflow: hidden;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 56px 48px;
  background: var(--ink);
  color: #fff;
  min-height: 640px;
}

.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(36px, 4.2vw, 54px);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: 0.01em;
}

.hero-sub {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
}

.hero-en {
  margin: 0 0 22px;
  font-family: var(--en);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--copper);
}

.hero-line {
  margin: 0;
  max-width: 28em;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.72);
}

.hero-line + .hero-line {
  margin-top: 8px;
}

.hero-line-en {
  font-family: var(--en);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: rgba(255, 255, 255, 0.58);
}

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

.hero-actions .btn-ink {
  background: #fff;
  color: var(--ink);
  border-color: #fff;
}

.hero-actions .btn-ink:hover {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.55);
}

.hero-actions .btn-ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}

.hero-actions .btn-ghost:hover {
  background: #fff;
  color: var(--ink);
}

.hero-visual {
  position: relative;
  min-height: 640px;
  height: 100%;
  overflow: hidden;
  background: #1c2226;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.18) contrast(1.02);
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(22, 25, 28, 0.28), transparent 40%);
  pointer-events: none;
}

/* About */
.about {
  padding: 108px 0 72px;
  background: var(--white);
}

.about-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  align-items: start;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--line);
}

.about-label span {
  display: block;
  margin-bottom: 10px;
  font-family: var(--en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--copper);
}

.about-label h2,
.section-intro h2,
.contact h2,
.app-content h2 {
  margin: 0;
  font-size: clamp(28px, 3vw, 36px);
  font-weight: 600;
  line-height: 1.25;
}

.about-body .lead {
  margin: 0 0 18px;
  font-size: 22px;
  font-weight: 500;
  line-height: 1.55;
  max-width: 28em;
}

.about-body p {
  margin: 0;
  max-width: 38em;
  color: var(--ink-soft);
  font-size: 16px;
}

.facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding-top: 40px;
}

.fact span {
  display: block;
  margin-bottom: 8px;
  font-family: var(--en);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.fact strong {
  font-size: 16px;
  font-weight: 600;
}

.fact .mono {
  font-family: var(--en);
  font-size: 13px;
  letter-spacing: 0.02em;
  word-break: break-all;
}

/* Business */
.business {
  padding: 100px 0;
  background: var(--paper);
}

.section-intro {
  max-width: 520px;
  margin-bottom: 44px;
}

.section-intro.center {
  margin-inline: auto;
  text-align: center;
}

.section-intro p {
  margin: 14px 0 0;
  color: var(--ink-soft);
}

.biz-editorial {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: 14px;
  margin-bottom: 14px;
}

.biz-feature {
  position: relative;
  min-height: 420px;
  overflow: hidden;
  background: #1a1e22;
  color: #fff;
}

.biz-feature img,
.biz-tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.biz-feature:hover img,
.biz-tile:hover img {
  transform: scale(1.03);
}

.biz-feature::after,
.biz-tile::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 35%, rgba(22, 25, 28, 0.78));
}

.biz-caption,
.biz-tile > div {
  position: absolute;
  z-index: 1;
  left: 24px;
  right: 24px;
  bottom: 24px;
}

.biz-caption span {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--en);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
}

.biz-caption h3,
.biz-tile h3 {
  margin: 0 0 4px;
  font-size: 28px;
  font-weight: 600;
}

.biz-caption p,
.biz-tile p {
  margin: 0;
  font-family: var(--en);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.7);
}

.biz-side {
  display: grid;
  gap: 14px;
}

.biz-tile {
  position: relative;
  min-height: 203px;
  overflow: hidden;
  background: #1a1e22;
  color: #fff;
}

.biz-tile h3 {
  font-size: 20px;
}

.biz-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-top: 28px;
}

.biz-row article {
  padding: 28px 20px;
  border-right: 1px solid var(--line);
}

.biz-row article:last-child {
  border-right: 0;
}

.biz-row h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
}

.biz-row p {
  margin: 0;
  font-family: var(--en);
  font-size: 12px;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}

.biz-cta {
  margin-top: 36px;
}

/* Applications */
.applications:not(.home-apps) {
  background: var(--ink);
}

/* Homepage: align with centered shell sections, equal 1:1 panel */
.home-apps {
  background: var(--white);
  padding: 0 0 96px;
}

.home-apps .app-panel {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  min-height: 480px;
  max-height: 520px;
  background: var(--ink);
  overflow: hidden;
}

.home-apps .app-panel > img,
.home-apps .app-content {
  min-height: 480px;
  max-height: 520px;
  height: 100%;
}

.app-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  min-height: 480px;
}

.app-panel > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  filter: grayscale(0.25);
  min-height: 480px;
}

.app-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 48px 40px;
  color: #fff;
  background: var(--ink);
}

.app-content ul {
  list-style: none;
  margin: 36px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.app-content li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.app-content li:last-child {
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.app-content strong {
  font-size: 18px;
  font-weight: 600;
}

.app-content span:not(.eyebrow) {
  font-family: var(--en);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
}

/* Process */
.process {
  padding: 96px 0;
  background: var(--white);
}

.flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  counter-reset: none;
}

.flow li {
  position: relative;
  padding: 8px 28px 8px 0;
}

.flow li:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 28px;
  right: 10px;
  width: 28px;
  height: 1px;
  background: var(--line);
}

.flow span {
  display: block;
  margin-bottom: 14px;
  font-family: var(--en);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--copper);
}

.flow strong {
  display: block;
  margin-bottom: 6px;
  font-family: var(--en);
  font-size: 18px;
  font-weight: 600;
}

.flow em {
  font-style: normal;
  color: var(--ink-soft);
  font-size: 14px;
}

/* Why */
.why {
  padding: 96px 0;
  background: var(--paper);
}

.why-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}

.why-list > div {
  padding: 32px 28px 32px 0;
  border-bottom: 1px solid var(--line);
}

.why-list > div:nth-child(odd) {
  padding-right: 40px;
  border-right: 1px solid var(--line);
}

.why-list > div:nth-child(even) {
  padding-left: 40px;
}

.why-list h3 {
  margin: 0 0 10px;
  font-size: 20px;
  font-weight: 600;
}

.why-list p {
  margin: 0;
  color: var(--ink-soft);
  max-width: 28em;
}

/* Contact */
.contact {
  padding: 108px 0;
  background: var(--ink);
  color: #fff;
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: start;
}

.contact-name {
  margin: 18px 0 4px;
  font-size: 22px;
  font-weight: 600;
}

.contact-en {
  margin: 0;
  font-family: var(--en);
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
}

.contact-details {
  display: grid;
  gap: 28px;
  padding-top: 8px;
}

.contact-details > div > span {
  display: block;
  margin-bottom: 8px;
  font-family: var(--en);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
}

.contact-details a {
  font-size: 20px;
  font-weight: 500;
  border-bottom: 1px solid transparent;
}

.contact-details a:hover {
  border-bottom-color: rgba(255, 255, 255, 0.4);
}

.contact-details p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.78);
  max-width: 28em;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 8px;
}

/* Legal strip */
.legal-strip {
  background: #111417;
  color: rgba(255, 255, 255, 0.55);
  padding: 22px 0;
  font-size: 12px;
}

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

.legal-grid p {
  margin: 0;
  line-height: 1.5;
}

.legal-grid span {
  display: block;
  margin-bottom: 4px;
  font-family: var(--en);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.35);
}

/* Footer */
.footer {
  background: #0d0f11;
  color: rgba(255, 255, 255, 0.62);
  padding: 56px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr 1.1fr 0.9fr;
  gap: 28px 32px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand strong {
  display: block;
  color: #fff;
  font-size: 16px;
  margin-bottom: 8px;
}

.footer-brand span {
  display: block;
  font-size: 13px;
  margin-top: 4px;
}

.footer-col {
  display: grid;
  gap: 10px;
  align-content: start;
}

.footer-col h3 {
  margin: 0 0 4px;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.footer-col a {
  font-size: 14px;
  line-height: 1.45;
}

.footer-col a:hover {
  color: #fff;
}

.footer-addr {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.45);
  max-width: 18em;
}

.footer-col-legal a {
  font-weight: 500;
  color: rgba(255, 255, 255, 0.78);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-top {
  display: none;
}

.footer-nav,
.footer-contact {
  display: grid;
  gap: 10px;
  align-content: start;
}

.footer-nav a:hover,
.footer-contact a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  align-items: center;
  padding-top: 22px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
}

.footer-legal {
  display: inline-flex;
  gap: 16px;
}

.footer-legal a,
.footer-legal button {
  background: none;
  border: 0;
  padding: 0;
  color: rgba(255, 255, 255, 0.72);
  cursor: pointer;
  font: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-legal a:hover,
.footer-legal button:hover {
  color: #fff;
}

.legal-page {
  background: var(--white);
}

.legal-prose {
  max-width: 760px;
}

.legal-prose h2 {
  margin: 36px 0 12px;
  font-size: 20px;
  font-weight: 600;
}

.legal-prose h2:first-child {
  margin-top: 0;
}

.legal-prose p,
.legal-prose li {
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.75;
}

.legal-prose ul {
  margin: 0 0 8px;
  padding-left: 1.2em;
}

.legal-prose a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Dialog */
.legal-dialog {
  position: relative;
  border: 0;
  padding: 28px;
  max-width: 480px;
  width: calc(100% - 32px);
  background: var(--white);
  color: var(--ink);
}

.legal-dialog::backdrop {
  background: rgba(13, 15, 17, 0.55);
}

.legal-dialog h3 {
  margin: 0 0 12px;
  font-size: 18px;
}

.legal-dialog p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.legal-close {
  position: absolute;
  top: 12px;
  right: 14px;
  border: 0;
  background: transparent;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  color: var(--ink-soft);
}

.legal-dialog form {
  margin: 0;
}

/* Multi-page shared */
.page-hero {
  margin-top: var(--header-h);
  padding: 72px 0 56px;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.page-hero-dark {
  background: var(--ink);
  color: #fff;
  border-bottom: 0;
}

.page-kicker {
  margin: 0 0 14px;
  font-family: var(--en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--copper);
}

.page-kicker.light {
  color: rgba(255, 255, 255, 0.55);
}

.page-hero h1 {
  margin: 0 0 14px;
  font-size: clamp(34px, 4vw, 48px);
  font-weight: 600;
  line-height: 1.2;
}

.page-lead {
  margin: 0;
  max-width: 36em;
  font-size: 16px;
  color: var(--ink-soft);
  line-height: 1.7;
}

.page-hero-dark .page-lead {
  color: rgba(255, 255, 255, 0.68);
}

.page-section {
  padding: 88px 0;
  background: var(--white);
}

.page-section.muted {
  background: var(--paper);
}

.home-about {
  padding-bottom: 88px;
}

.home-about .facts {
  display: none;
}

.text-link {
  margin-top: 24px !important;
}

.text-link a,
.text-arrow,
.app-more a {
  font-weight: 600;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: border-color 0.25s ease;
}

.text-link a:hover,
.text-arrow:hover,
.app-more a:hover {
  border-bottom-color: var(--ink);
}

.section-cta {
  margin-top: 36px;
}

.section-cta.center {
  text-align: center;
}

.app-more {
  margin: 28px 0 0;
}

.app-more a {
  color: #fff;
  border-bottom-color: rgba(255, 255, 255, 0.35);
}

.app-more a:hover {
  border-bottom-color: #fff;
}

.flow-compact strong {
  font-family: var(--sans);
  font-size: 17px;
}

.flow-compact em {
  display: none;
}

.contact-cta {
  padding: 72px 0;
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.contact-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.contact-cta h2 {
  margin: 0 0 8px;
  font-size: 28px;
  font-weight: 600;
}

.contact-cta p {
  margin: 0;
  color: var(--ink-soft);
}

.prose-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.7fr;
  gap: 48px;
  align-items: start;
}

.prose .lead {
  margin: 0 0 18px;
  font-size: 22px;
  font-weight: 500;
  line-height: 1.55;
}

.prose p {
  margin: 0 0 16px;
  color: var(--ink-soft);
  max-width: 40em;
}

.prose h2,
.dual-cols h2,
.company-details h2 {
  margin: 0 0 18px;
  font-size: clamp(24px, 2.6vw, 32px);
  font-weight: 600;
}

.aside-note {
  padding: 28px;
  border: 1px solid var(--line);
  background: var(--paper);
}

.aside-note p {
  margin: 0 0 10px;
  font-family: var(--en);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--copper);
}

.aside-note strong {
  display: block;
  margin-bottom: 10px;
  font-family: var(--en);
  font-size: 18px;
}

.aside-note span {
  color: var(--ink-soft);
  font-size: 14px;
}

.dual-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.dual-cols p {
  margin: 0 0 14px;
  color: var(--ink-soft);
  max-width: 34em;
}

.detail-list {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}

.detail-list > div {
  display: grid;
  gap: 6px;
  padding: 22px 24px 22px 0;
  border-bottom: 1px solid var(--line);
}

.detail-list > div:nth-child(odd) {
  padding-right: 32px;
  border-right: 1px solid var(--line);
}

.detail-list > div:nth-child(even) {
  padding-left: 32px;
}

.detail-list dt {
  font-family: var(--en);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.detail-list dd {
  margin: 0;
  font-size: 15px;
  font-weight: 500;
}

.detail-list .mono {
  font-family: var(--en);
  letter-spacing: 0.02em;
  word-break: break-all;
}

.product-spotlight {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: 14px;
}

.spotlight-main,
.spotlight-side figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: #1a1e22;
  color: #fff;
}

.spotlight-main {
  min-height: 420px;
}

.spotlight-side {
  display: grid;
  gap: 14px;
}

.spotlight-side figure {
  min-height: 203px;
}

.spotlight-main img,
.spotlight-side img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.12);
}

.spotlight-main::after,
.spotlight-side figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(22, 25, 28, 0.78));
}

.spotlight-main figcaption,
.spotlight-side figcaption {
  position: absolute;
  z-index: 1;
  left: 22px;
  right: 22px;
  bottom: 22px;
}

.spotlight-main figcaption span,
.spotlight-side figcaption span {
  display: block;
  margin-bottom: 8px;
  font-family: var(--en);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.55);
}

.spotlight-main figcaption strong,
.spotlight-side figcaption strong {
  display: block;
  font-size: 22px;
  font-weight: 600;
}

.spotlight-main figcaption em {
  display: block;
  margin-top: 6px;
  font-family: var(--en);
  font-style: normal;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
}

.scope-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.scope-list li {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 20px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.scope-num {
  font-family: var(--en);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--copper);
  padding-top: 6px;
}

.scope-list h2 {
  margin: 0 0 6px;
  font-size: 22px;
  font-weight: 600;
}

.scope-en {
  margin: 0 0 10px;
  font-family: var(--en);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.scope-list li p:last-child {
  margin: 0;
  color: var(--ink-soft);
  max-width: 40em;
}

.other-cats {
  margin-top: 56px;
  padding: 32px 0 0;
  border-top: 1px solid var(--line);
}

.other-cats h2 {
  margin: 0 0 12px;
  font-family: var(--en);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.other-cats > p {
  margin: 0 0 16px;
  color: var(--ink-soft);
}

.other-cats ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
}

.other-cats li {
  font-size: 16px;
  font-weight: 500;
}

.page-bottom-cta {
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.page-bottom-cta p {
  margin: 0 0 18px;
  color: var(--ink-soft);
}

.page-bottom-cta .cta-en {
  display: block;
  margin-top: 12px;
  font-family: var(--en);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.apps-page-body {
  background: var(--paper);
  padding: 0 0 0;
}

.apps-scenes {
  display: grid;
  gap: 24px;
  padding: 0 0 24px;
}

.scene {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  min-height: 480px;
  max-height: 520px;
  overflow: hidden;
  background: var(--ink);
}

.scene-dark {
  background: var(--ink);
  color: #fff;
}

.scene-split {
  background: var(--white);
  color: var(--ink);
}

.scene-split .scene-body {
  background: var(--white);
}

.scene-plain {
  display: block;
  padding: 72px 0;
  background: var(--paper);
  min-height: 0;
  max-height: none;
  overflow: visible;
}

.scene-media {
  overflow: hidden;
  background: #1a1e22;
  min-height: 480px;
  max-height: 520px;
}

.scene-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  min-height: 480px;
  max-height: 520px;
  filter: grayscale(0.15);
}

.scene-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 48px 40px;
  min-height: 480px;
}

.scene-body h2 {
  margin: 0 0 8px;
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 600;
}

.scene-en {
  margin: 0 0 18px;
  font-family: var(--en);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--copper);
}

.scene-dark .scene-en {
  color: rgba(255, 255, 255, 0.5);
}

.scene-body > p:not(.scene-en):not(.scene-tags) {
  margin: 0 0 18px;
  max-width: 30em;
  line-height: 1.75;
  color: var(--ink-soft);
}

.scene-dark .scene-body > p:not(.scene-en):not(.scene-tags) {
  color: rgba(255, 255, 255, 0.72);
}

.scene-tags {
  margin: 0;
  font-size: 13px;
  color: var(--ink-soft);
}

.scene-dark .scene-tags {
  color: rgba(255, 255, 255, 0.45);
}

.scene-plain-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.scene-plain-inner h2 {
  margin: 0 0 8px;
  font-size: 26px;
}

.scene-plain-inner > div > p:not(.scene-en):not(.scene-tags) {
  margin: 0 0 16px;
  color: var(--ink-soft);
  max-width: 32em;
}

.section-cta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.section-cta-bar p {
  margin: 0;
  max-width: 36em;
  color: var(--ink-soft);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.process-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.process-steps li {
  position: relative;
  padding: 8px 28px 8px 0;
}

.process-steps li:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 22px;
  right: 12px;
  width: 24px;
  height: 1px;
  background: var(--line);
}

.step-head {
  margin-bottom: 14px;
}

.step-head span {
  display: block;
  margin-bottom: 12px;
  font-family: var(--en);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--copper);
}

.step-head h2 {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
}

.process-steps p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
  max-width: 18em;
  padding-right: 12px;
}

.contact-page {
  padding-top: 72px;
  padding-bottom: 96px;
}

.contact-address {
  margin: 28px 0 0;
  max-width: 22em;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.72);
}

.contact-hint {
  margin: 28px 0 0;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.5);
}

/* Contact page — compact business panel */
.contact-layout {
  margin-top: var(--header-h);
  background: var(--paper);
  color: var(--ink);
  padding: 56px 0 80px;
}

.contact-panel {
  background: var(--ink);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 48px clamp(28px, 4vw, 56px);
  display: grid;
  gap: 36px;
}

.contact-panel-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.contact-panel-head h1 {
  margin: 0;
  font-size: clamp(32px, 3.6vw, 44px);
  font-weight: 600;
  line-height: 1.2;
}

.contact-panel-head .contact-lead {
  margin: 0;
  max-width: 18em;
  font-size: 15px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.62);
  text-align: right;
}

.contact-panel-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 40px 56px;
  align-items: start;
}

.contact-identity .contact-name {
  margin: 0 0 6px;
  font-size: 22px;
  font-weight: 600;
}

.contact-identity .contact-en {
  margin: 0 0 18px;
  font-family: var(--en);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}

.contact-identity .contact-address {
  margin: 0 0 18px;
  max-width: 26em;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.78);
}

.contact-identity .contact-hint {
  margin: 0;
  max-width: 28em;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.48);
}

.contact-lines {
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.contact-line {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  color: #fff;
}

.contact-line span {
  flex: 0 0 auto;
  font-family: var(--en);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
}

.contact-line strong {
  font-size: 18px;
  font-weight: 500;
  text-align: right;
  word-break: break-word;
}

.contact-line:hover strong {
  border-bottom: 1px solid rgba(255, 255, 255, 0.35);
}

.contact-panel-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

@media (max-width: 900px) {
  .contact-panel-body {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .contact-panel-head .contact-lead {
    text-align: left;
    max-width: none;
  }

  .contact-line {
    flex-direction: column;
    gap: 8px;
  }

  .contact-line strong {
    text-align: left;
    font-size: 17px;
  }
}

@media (max-width: 860px) {
  .contact-layout {
    padding: 32px 0 56px;
  }

  .contact-panel {
    padding: 28px 20px;
    gap: 28px;
  }
}

.contact-lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.68);
}


/* Product catalog */
.catalog-section {
  padding-top: 40px;
}

.catalog-toolbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.filters {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  max-width: 100%;
  -webkit-overflow-scrolling: touch;
}

.filter-btn {
  flex: 0 0 auto;
  min-height: 36px;
  padding: 0 14px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.filter-btn:hover,
.filter-btn.is-active {
  color: var(--ink);
  border-color: var(--ink);
  background: var(--white);
}

.filter-btn.filter-other {
  color: var(--ink-soft);
  opacity: 0.85;
}

.catalog-count {
  margin: 0;
  font-size: 13px;
  color: var(--ink-soft);
  white-space: nowrap;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.product-card {
  background: var(--white);
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  min-width: 0;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s ease;
}

.product-card:hover {
  border-color: var(--ink);
}

.product-media {
  aspect-ratio: 1;
  overflow: hidden;
  background: #1a1e22;
}

.product-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.product-card:hover .product-media img {
  transform: scale(1.03);
}

.product-body {
  padding: 16px 16px 18px;
  display: grid;
  gap: 6px;
}

.product-sku {
  font-family: var(--en);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.product-body h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.35;
}

.product-en {
  margin: 0;
  font-family: var(--en);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

.product-desc {
  margin: 4px 0 0;
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-soft);
}

.product-cat {
  margin-top: 8px;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--copper);
}

.featured-grid {
  margin-top: 8px;
}

.other-note {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.other-note h2 {
  margin: 0 0 10px;
  font-family: var(--en);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.other-note p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.catalog-cta,
.page-bottom-cta.catalog-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.catalog-cta h2,
.cta-title {
  margin: 0 0 8px;
  font-size: 22px;
  font-weight: 600;
}

.catalog-error {
  color: var(--ink-soft);
  padding: 24px 0;
}

/* Product detail */
.product-detail {
  padding: 40px 0 72px;
}

.product-loading,
.product-missing {
  padding: 48px 0;
  color: var(--ink-soft);
}

.product-missing a {
  color: var(--ink);
}

.product-crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 0 0 28px;
  font-size: 13px;
  color: var(--ink-soft);
}

.product-crumb a {
  color: var(--ink-soft);
  text-decoration: none;
}

.product-crumb a:hover {
  color: var(--ink);
}

.product-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 36px;
  align-items: start;
}

.product-gallery {
  background: #1a1e22;
  border: 1px solid var(--line);
  overflow: hidden;
}

.product-gallery img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
}

.product-info h1 {
  margin: 8px 0 6px;
  font-size: clamp(28px, 3.2vw, 40px);
  font-weight: 600;
  line-height: 1.2;
}

.product-sku-lg {
  margin: 0;
  font-family: var(--en);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--copper);
}

.product-en-lg {
  margin: 0 0 10px;
  font-family: var(--en);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

.product-cat-lg {
  margin: 0 0 16px;
  font-size: 13px;
  color: var(--ink-soft);
}

.product-lead {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.product-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.product-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
}

.product-sections {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.product-sections h2 {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 600;
}

.product-sections p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.spec-list {
  margin: 0;
  display: grid;
  gap: 12px;
}

.spec-list > div {
  display: grid;
  gap: 4px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.spec-list dt {
  font-family: var(--en);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

.spec-list dd {
  margin: 0;
  font-size: 14px;
  color: var(--ink);
}

.app-chip-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.app-chip-list li {
  padding: 10px 12px;
  background: var(--white);
  border: 1px solid var(--line);
  font-size: 14px;
}

.product-related {
  margin-top: 56px;
}

.product-related h2 {
  margin: 0 0 20px;
  font-size: 20px;
  font-weight: 600;
}

/* Mobile WhatsApp float — restrained, mobile only */
.wa-float {
  display: none;
  position: fixed;
  right: 16px;
  bottom: 18px;
  z-index: 60;
  min-height: 44px;
  padding: 0 16px;
  align-items: center;
  justify-content: center;
  background: var(--wa);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  border: 0;
  box-shadow: none;
}

.wa-float:hover {
  color: #fff;
  filter: brightness(0.95);
}

@media (max-width: 860px) {
  .wa-float {
    display: inline-flex;
  }

  .header-end .btn-ink {
    display: none;
  }
}

@media (max-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-layout,
  .product-sections {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .product-grid {
    grid-template-columns: 1fr;
  }

  .product-detail {
    padding-top: 28px;
  }

  .product-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: 0;
    width: min(1120px, calc(100% - 32px));
  }

  .hero-copy {
    padding: 48px 28px;
    min-height: 0;
  }

  .hero-visual {
    min-height: 320px;
  }

  .home-apps {
    padding-bottom: 64px;
  }

  .home-apps .app-panel > img,
  .home-apps .app-content,
  .app-panel > img {
    min-height: 280px;
  }

  .about-grid,
  .biz-editorial,
  .app-panel,
  .contact-grid,
  .footer-top,
  .footer-grid,
  .facts,
  .legal-grid,
  .prose-grid,
  .dual-cols,
  .product-spotlight,
  .scene,
  .scene-plain-inner,
  .detail-list {
    grid-template-columns: 1fr;
  }

  .scene {
    max-height: none;
  }

  .scene-media,
  .scene-media img,
  .scene-body {
    min-height: 280px;
    max-height: none;
  }

  .detail-list > div:nth-child(odd),
  .detail-list > div:nth-child(even) {
    padding-left: 0;
    padding-right: 0;
    border-right: 0;
  }

  .process-steps {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

  .process-steps li:not(:last-child)::after {
    display: none;
  }

  .process-steps p {
    max-width: none;
    padding-right: 0;
  }

  .biz-row {
    grid-template-columns: 1fr 1fr;
  }

  .biz-row article:nth-child(2) {
    border-right: 0;
  }

  .biz-row article:nth-child(1),
  .biz-row article:nth-child(2) {
    border-bottom: 1px solid var(--line);
  }

  .flow {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .flow li:not(:last-child)::after {
    display: none;
  }

  .why-list {
    grid-template-columns: 1fr;
  }

  .why-list > div:nth-child(odd),
  .why-list > div:nth-child(even) {
    padding: 24px 0;
    border-right: 0;
  }
}

@media (max-width: 860px) {
  .shell {
    width: min(100%, calc(100% - 32px));
  }

  .header-inner {
    width: min(100%, calc(100% - 24px));
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
  }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 8px 0;
    margin: 0;
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    padding: 14px 20px;
  }

  .brand-text em {
    display: none;
  }

  .hero h1 {
    font-size: clamp(32px, 9vw, 40px);
  }

  .biz-row {
    grid-template-columns: 1fr;
  }

  .biz-row article {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .flow,
  .process-steps {
    grid-template-columns: 1fr;
  }

  .scope-list li {
    grid-template-columns: 48px 1fr;
    gap: 12px;
  }

  .page-hero {
    padding: 56px 0 40px;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    transition: none !important;
  }
}