:root {
  --text: #ffffff;
  --blue: rgb(80, 155, 255);
  --accent: rgb(242, 197, 21);
  --ink: #111111;
  --black: #000000;
  --shell: min(1180px, calc(100vw - 64px));
  --header-h: 86px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--black);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, #ffffff 0, var(--blue) 18vh, var(--black) 68vh, var(--black) 100%);
  pointer-events: none;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
img { max-width: 100%; display: block; }
.section-shell { width: var(--shell); margin: 0 auto; }
.skip-link {
  position: fixed; z-index: 100; top: -60px; left: 16px; padding: 12px 18px;
  color: var(--ink); background: var(--accent); transition: top .2s;
}
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  padding: 14px 0 0;
}
.header-bar {
  width: var(--shell);
  height: 64px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px 0 14px;
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, .18);
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); }
.brand-mark { width: 36px; height: 36px; object-fit: contain; }
.footer-brand .brand-mark { filter: invert(1); }
.brand-copy { display: flex; flex-direction: column; gap: 1px; }
.brand-copy strong { font-size: 15px; letter-spacing: .12em; white-space: nowrap; }
.brand-copy small { font-size: 9px; letter-spacing: .28em; color: #666; }
.desktop-nav { display: flex; align-items: center; gap: 2px; }
.desktop-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  padding: 6px 7px;
  border: 1px solid transparent;
  border-radius: 10px;
  color: var(--ink);
  font-size: 13px;
}
.desktop-nav a strong { font-size: 13px; font-weight: 650; }
.desktop-nav a small { font-size: 9px; color: #8a8a8a; letter-spacing: .04em; }
.desktop-nav a.active,
.desktop-nav a:hover { border-color: var(--accent); }
.header-cta {
  padding: 9px 18px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
}
.header-cta:hover { filter: brightness(1.05); }
.menu-toggle, .mobile-nav { display: none; }

.kicker {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 12px;
  letter-spacing: .16em;
  font-weight: 600;
}
.accent-line {
  display: block;
  width: min(220px, 100%);
  height: 3px;
  margin: 16px 0 22px;
  background: var(--accent);
}
.lead { max-width: 760px; margin: 0; font-size: 16px; line-height: 1.9; color: rgba(255,255,255,.88); }

.hero { min-height: calc(100vh - 90px); padding: 48px 0 80px; display: flex; align-items: center; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, .95fr);
  align-items: center;
  gap: 5vw;
}
.hero-visual {
  width: min(480px, 92%);
  margin: 0 auto;
  overflow: visible;
  background: transparent;
}
.hero-visual img {
  width: 100%;
  height: auto;
  max-height: min(72vh, 560px);
  object-fit: contain;
}
.hero-copy h1 {
  margin: 0;
  font-size: clamp(28px, 3.6vw, 48px);
  font-weight: 560;
  letter-spacing: -.02em;
  line-height: 1.25;
}
.hero-copy h1 small {
  display: block;
  margin-top: 8px;
  font-size: .42em;
  letter-spacing: .18em;
  font-weight: 500;
  color: rgba(255,255,255,.72);
}
.mission { margin: 0; font-size: clamp(18px, 2vw, 24px); line-height: 1.7; font-weight: 500; }
.vision { margin: 18px 0 0; font-size: 15px; line-height: 1.9; color: rgba(255,255,255,.86); }
.brand-pills { display: flex; flex-wrap: wrap; gap: 10px; margin: 28px 0 0; padding: 0; list-style: none; }
.brand-pills li {
  padding: 6px 14px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  color: var(--accent);
  font-size: 12px;
  letter-spacing: .08em;
}
.brand-value { margin: 20px 0 0; font-size: 13px; letter-spacing: .06em; color: rgba(255,255,255,.75); }

.product, .service, .scenes, .about, .partner, .contact { padding: clamp(80px, 10vw, 140px) 0; }
.section-intro h2, .about h2, .contact h2, .partner h2, .scenes h2, .object-intro h3 {
  margin: 0;
  font-size: clamp(32px, 4.2vw, 56px);
  line-height: 1.2;
  letter-spacing: -.03em;
  font-weight: 540;
}

.value-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 40px 0 0;
  padding: 0;
  list-style: none;
}
.value-row li {
  padding: 10px 18px;
  border: 1px solid rgba(255,255,255,.28);
  border-radius: 999px;
  font-size: 13px;
}
.sell-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 48px 0 64px;
}
.sell-card, .cap-card {
  padding: 22px 20px 26px;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.04);
}
.sell-card span, .cap-card span {
  color: var(--accent);
  font-size: 11px;
  letter-spacing: .14em;
}
.sell-card h3, .cap-card h3 { margin: 12px 0 10px; font-size: 18px; font-weight: 560; }
.sell-card p, .cap-card p { margin: 0; font-size: 13px; line-height: 1.75; color: rgba(255,255,255,.78); }

.scene-feature, .scene-wide {
  position: relative;
  height: clamp(420px, 52vw, 680px);
  margin: 0;
  overflow: hidden;
  background: #0a0a0a;
}
.scene-feature::after, .scene-wide::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 48%, rgba(0,0,0,.72) 100%);
}
.scene-feature img, .scene-wide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.1s cubic-bezier(.2,.7,.2,1);
}
.scene-feature:hover img, .scene-wide:hover img { transform: scale(1.025); }
.scene-feature figcaption, .scene-wide figcaption {
  position: absolute;
  z-index: 2;
  left: 32px;
  right: 32px;
  bottom: 28px;
}
.scene-feature figcaption span, .scene-wide figcaption span {
  display: block;
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 11px;
  letter-spacing: .16em;
}
.scene-feature figcaption strong, .scene-wide figcaption h3 {
  margin: 0 0 8px;
  font-size: clamp(22px, 2.6vw, 36px);
  font-weight: 520;
}
.scene-feature figcaption p, .scene-wide figcaption p {
  margin: 0;
  max-width: 560px;
  color: rgba(255,255,255,.78);
  font-size: 13px;
  line-height: 1.7;
}

.product-object-grid {
  display: grid;
  grid-template-columns: minmax(240px, .7fr) 1.5fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
  padding: clamp(64px, 8vw, 110px) 0;
}
.object-intro p:not(.kicker) { margin: 18px 0 0; font-size: 14px; line-height: 1.9; color: rgba(255,255,255,.82); }
.object-intro ul { margin: 36px 0 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.18); }
.object-intro li {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(255,255,255,.18);
  font-size: 14px;
}
.object-intro li span { color: var(--accent); font-size: 11px; letter-spacing: .12em; }
.object-gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.object-gallery figure {
  position: relative;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  padding: 28px 16px 48px;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255,255,255,.1), rgba(0,0,0,.28));
}
.object-gallery img {
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: contain;
  transition: transform .7s ease;
}
.object-gallery figure:hover img { transform: scale(1.03); }
.object-gallery figcaption {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 12px;
  display: flex;
  justify-content: space-between;
  color: rgba(255,255,255,.8);
  font-size: 10px;
  letter-spacing: .12em;
}
.object-gallery figcaption span { color: var(--accent); }

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 48px;
}
.tech-values { margin: 22px 0 0; color: var(--accent); font-size: 14px; letter-spacing: .12em; }
.arch-block { margin-top: 72px; }
.arch-block h3 { margin: 0 0 24px; font-size: 22px; }
.arch-list { margin: 0; padding: 0; list-style: none; counter-reset: arch; }
.arch-list li {
  counter-increment: arch;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 8px 20px;
  padding: 22px 0;
  border-top: 1px solid rgba(255,255,255,.16);
}
.arch-list li::before {
  content: "0" counter(arch);
  color: var(--accent);
  font-size: 13px;
  letter-spacing: .12em;
  grid-row: 1 / span 2;
}
.arch-list strong { font-size: 18px; font-weight: 560; }
.arch-list p { margin: 6px 0 0; font-size: 14px; line-height: 1.8; color: rgba(255,255,255,.78); }

.scene-value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 48px 0 40px;
}
.scene-value {
  padding: 24px 22px 26px;
  border: 1px solid rgba(242, 197, 21, .45);
  background: rgba(242, 197, 21, .06);
}
.scene-value span, .scene-detail span {
  color: var(--accent);
  font-size: 12px;
  letter-spacing: .16em;
}
.scene-value h3 { margin: 12px 0 10px; font-size: 20px; font-weight: 560; }
.scene-value p { margin: 0; font-size: 14px; line-height: 1.8; color: rgba(255,255,255,.82); }
.scene-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.scene-detail {
  padding: 26px 24px 28px;
  border-top: 3px solid var(--accent);
  background: rgba(255,255,255,.04);
}
.scene-detail:last-child { grid-column: 1 / -1; }
.scene-detail h3 { margin: 12px 0 8px; font-size: 22px; line-height: 1.35; font-weight: 600; }
.scene-sub { margin: 0 0 14px; color: var(--accent); font-size: 13px; }
.scene-detail p { margin: 0 0 12px; font-size: 15px; line-height: 1.85; color: rgba(255,255,255,.86); }
.scene-pain { color: rgba(255,255,255,.7) !important; }
.scene-gain { margin-bottom: 0 !important; color: rgba(255,255,255,.92) !important; }

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px 64px; }
.about-copy p { margin: 0 0 18px; font-size: 16px; line-height: 2; color: rgba(255,255,255,.9); }
.about-facts {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}
.about-facts li {
  padding: 18px 16px;
  border-top: 2px solid var(--accent);
  background: rgba(255,255,255,.04);
}
.about-facts strong { display: block; margin-bottom: 8px; font-size: 13px; color: var(--accent); }
.about-facts span { font-size: 15px; }

.contact-bottom {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.18);
}
.contact-bottom p { max-width: 480px; margin: 0; font-size: 16px; line-height: 1.7; }
.button-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 180px;
  padding: 14px 22px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.button-cta:hover { filter: brightness(1.06); }
.contact-note { margin: 22px 0 0; color: rgba(255,255,255,.55); font-size: 12px; }
.contact-note + .contact-note { margin-top: 8px; }
.contact-note a { color: var(--accent); }

.partner-form {
  max-width: 860px;
  margin-top: 40px;
  padding: 28px 28px 32px;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.04);
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 20px;
}
.partner-form label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
  letter-spacing: .04em;
  color: rgba(255,255,255,.82);
}
.partner-form input,
.partner-form select,
.partner-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 8px;
  background: rgba(0,0,0,.28);
  color: #fff;
  font: inherit;
}
.partner-form textarea { resize: vertical; min-height: 120px; }
.partner-form select option { color: #111; }
.form-wide { display: flex; flex-direction: column; gap: 8px; margin-top: 16px; }
.form-note { margin: 16px 0 20px; color: rgba(255,255,255,.55); font-size: 13px; }
.partner-form .button-cta { border: 0; cursor: pointer; }
.form-status { margin: 16px 0 0; font-size: 14px; }
.form-status.ok { color: var(--accent); }
.form-status.err { color: #ffb4b4; }

.leads-page .leads-main { padding: 40px 0 80px; }
.leads-page h1 { margin: 0 0 12px; font-size: 32px; font-weight: 560; }
.leads-meta { margin: 0 0 28px; color: rgba(255,255,255,.6); font-size: 14px; }
.leads-empty { padding: 28px; border: 1px dashed rgba(255,255,255,.2); color: rgba(255,255,255,.7); }
.lead-card {
  margin: 0 0 16px;
  padding: 22px 22px 20px;
  border-top: 3px solid var(--accent);
  background: rgba(255,255,255,.04);
}
.lead-card header { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 12px; }
.lead-card h2 { margin: 0; font-size: 20px; font-weight: 560; }
.lead-card time { color: var(--accent); font-size: 13px; }
.lead-grid { display: grid; grid-template-columns: 120px 1fr; gap: 8px 16px; font-size: 14px; }
.lead-grid dt { color: rgba(255,255,255,.5); }
.lead-grid dd { margin: 0; }
.lead-grid a { color: var(--accent); }

.site-footer { background: var(--black); color: var(--text); border-top: 1px solid rgba(255,255,255,.12); }
.footer-main { display: grid; grid-template-columns: 1fr 1.3fr .6fr; gap: 48px; padding: 64px 0; }
.footer-brand { color: var(--text); }
.footer-brand .brand-copy small { color: rgba(255,255,255,.55); }
.footer-slogan strong { color: var(--accent); font-size: 13px; letter-spacing: .12em; }
.footer-slogan p { max-width: 360px; margin: 12px 0 0; color: rgba(255,255,255,.65); font-size: 13px; line-height: 1.7; }
.footer-nav { display: grid; gap: 14px; }
.footer-nav a { color: rgba(255,255,255,.7); font-size: 13px; }
.footer-nav a:hover { color: var(--accent); }
.footer-legal {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  padding: 18px 0 28px;
  border-top: 1px solid rgba(255,255,255,.12);
}
.footer-legal p, .footer-legal a { margin: 0; color: rgba(255,255,255,.4); font-size: 11px; font-weight: 400; line-height: 1.5; }
.footer-beian {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0 6px;
  text-align: center;
  width: 100%;
}
.footer-beian a {
  font-size: 11px;
  font-weight: 400;
  line-height: 1.5;
  color: rgba(255,255,255,.4);
}
.footer-beian a:hover { color: rgba(255,255,255,.7); }
.footer-beian-gongan {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.footer-beian-gongan img {
  width: 16px;
  height: 17px;
  flex-shrink: 0;
  vertical-align: middle;
}

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

@media (max-width: 980px) {
  :root { --shell: min(100% - 36px, 860px); }
  .desktop-nav { display: none; }
  .menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 42px;
    height: 42px;
    padding: 8px;
    border: 0;
    background: transparent;
    cursor: pointer;
  }
  .menu-toggle span { display: block; width: 100%; height: 2px; background: var(--ink); }
  .menu-toggle.open span:first-child { transform: translateY(4px) rotate(45deg); }
  .menu-toggle.open span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .mobile-nav {
    position: fixed;
    inset: 86px 18px auto;
    display: flex;
    flex-direction: column;
    padding: 18px 20px 28px;
    background: #fff;
    color: var(--ink);
    border-radius: 16px;
    transform: translateY(-140%);
    opacity: 0;
    pointer-events: none;
    transition: transform .3s, opacity .3s;
  }
  .mobile-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .mobile-nav a { padding: 14px 0; border-bottom: 1px solid #eee; font-size: 15px; color: var(--ink); display: flex; align-items: baseline; gap: 10px; }
  .mobile-nav a small { color: #888; font-size: 12px; }
  .hero { padding-top: 28px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-copy { order: 2; }
  .hero-visual { order: 1; }
  .sell-grid, .capability-grid { grid-template-columns: 1fr 1fr; }
  .scene-value-grid, .scene-detail-grid { grid-template-columns: 1fr; }
  .scene-detail:last-child { grid-column: auto; }
  .product-object-grid, .about-grid { grid-template-columns: 1fr; }
  .about-facts { grid-template-columns: 1fr 1fr; }
  .footer-main { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  :root { --shell: calc(100vw - 28px); }
  .header-bar { height: 58px; }
  .header-cta { display: none; }
  .hero { min-height: auto; }
  .hero-copy h1 { font-size: 28px; }
  .sell-grid, .capability-grid, .about-facts, .scene-value-grid, .scene-detail-grid { grid-template-columns: 1fr; }
  .object-gallery { grid-template-columns: 1fr; }
  .scene-feature, .scene-wide { height: 460px; }
  .scene-feature figcaption, .scene-wide figcaption { left: 18px; right: 18px; bottom: 18px; }
  .contact-bottom { flex-direction: column; align-items: flex-start; }
  .form-grid { grid-template-columns: 1fr; }
  .partner-form { padding: 20px; }
  .footer-main, .footer-legal { grid-template-columns: 1fr; gap: 20px; }
  .footer-beian { justify-content: flex-start; text-align: left; }
}