:root {
  --bg: #f5f6f8;
  --bg-deep: #e9ecf1;
  --bg-elevated: #ffffff;
  --ink: #14171c;
  --ink-soft: #414851;
  --muted: #6a7380;
  --line: rgba(20, 23, 28, 0.1);
  --accent: #4a9fd8;
  --accent-deep: #2f7fb8;
  --charcoal: #12151a;
  --charcoal-soft: #1c222b;
  --wechat: #07c160;
  --font-display: "IBM Plex Sans", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --shell: min(1180px, calc(100% - 2.5rem));
  --header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  background: var(--bg);
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; border: 0; background: none; cursor: pointer; color: inherit; }

:focus-visible {
  outline: 2px solid var(--accent-deep);
  outline-offset: 3px;
}

h1, h2, h3, strong {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.15;
}

h1 {
  font-size: clamp(2.6rem, 6.5vw, 4.6rem);
  margin: 0 0 1.1rem;
  font-weight: 700;
}
h2 { font-size: clamp(1.85rem, 3.4vw, 2.55rem); margin: 0 0 0.75rem; }
h3 { font-size: 1.35rem; margin: 0 0 0.6rem; font-family: var(--font-body); font-weight: 700; }
p { margin: 0 0 1rem; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.shell { width: var(--shell); margin-inline: auto; }

.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 90;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

/* Header — e22h-like dark bar + gold accent */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--header-h);
  background: rgba(26, 28, 31, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.site-header.is-scrolled {
  border-bottom-color: rgba(74, 159, 216, 0.35);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.25);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
  color: #fff;
}

.brand-logo {
  display: block;
  height: 36px;
  width: auto;
  max-width: min(220px, 58vw);
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background:
    radial-gradient(circle at 50% 50%, transparent 38%, var(--accent) 39%, var(--accent) 44%, transparent 45%),
    linear-gradient(135deg, var(--charcoal-soft), #111);
  border: 1.5px solid var(--accent);
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 11px;
  background: var(--accent);
  border-radius: 2px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text strong {
  font-family: var(--font-body);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  font-weight: 700;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.15rem 1.35rem;
}

.nav a {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.92rem;
  transition: color 0.2s ease;
}

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

.nav-cta {
  margin-left: 0.35rem;
  padding: 0.45rem 1rem;
  background: var(--accent);
  color: var(--charcoal);
  font-weight: 700;
  font-size: 0.88rem;
  border-radius: 2px;
  transition: background 0.2s ease, transform 0.2s ease;
}

.nav-cta:hover {
  background: #8fc4eb;
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  place-items: center;
  gap: 6px;
  flex-direction: column;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  min-height: min(100vh, 880px);
  display: grid;
  align-items: end;
  padding: calc(var(--header-h) + 3rem) 0 5.5rem;
  color: #fff;
  overflow: hidden;
  background: #0c0d0f;
}

.hero-plane {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  transform: scale(1.04);
  animation: hero-drift 18s ease-in-out infinite alternate;
}

.hero-falloff {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(12, 13, 15, 0.88) 0%, rgba(12, 13, 15, 0.55) 42%, rgba(12, 13, 15, 0.25) 100%),
    linear-gradient(180deg, rgba(12, 13, 15, 0.35) 0%, transparent 35%, rgba(12, 13, 15, 0.75) 100%);
}

.hero-ring {
  position: absolute;
  right: 8%;
  top: 28%;
  width: min(42vw, 420px);
  aspect-ratio: 1;
  border: 1px solid rgba(74, 159, 216, 0.35);
  border-radius: 50%;
  pointer-events: none;
  animation: ring-spin 28s linear infinite;
}

.hero-ring::before,
.hero-ring::after {
  content: "";
  position: absolute;
  inset: 12%;
  border-radius: 50%;
  border: 1px dashed rgba(74, 159, 216, 0.25);
}

.hero-ring::after { inset: 28%; border-style: solid; opacity: 0.5; }

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 40rem;
}

.brand-hero {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.2vw, 1.45rem);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.brand-hero span {
  display: inline-block;
  margin-left: 0.35rem;
  font-family: var(--font-body);
  font-size: 0.78em;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.7);
  text-transform: none;
  font-weight: 500;
}

.hero-lead {
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.05rem;
  max-width: 34rem;
  margin-bottom: 1.75rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.78rem 1.35rem;
  border-radius: 2px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.btn-primary {
  background: var(--accent);
  color: var(--charcoal);
}

.btn-primary:hover {
  background: #8fc4eb;
  transform: translateY(-1px);
}

.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.45);
  color: #fff;
  background: rgba(255, 255, 255, 0.04);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.contact .btn-ghost,
.product-copy .btn-ghost {
  border-color: rgba(26, 28, 31, 0.25);
  color: var(--ink);
}

.contact .btn-ghost:hover,
.product-copy .btn-ghost:hover {
  border-color: var(--accent-deep);
  color: var(--accent-deep);
}

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

.btn-wechat:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
}

.text-link {
  color: var(--accent-deep);
  font-weight: 600;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.text-link:hover { border-bottom-color: var(--accent-deep); }

/* Sections */
.section {
  padding: 5.5rem 0;
  position: relative;
}

.section-head {
  max-width: 40rem;
  margin-bottom: 2.75rem;
}

.section-head.light { color: #fff; }
.section-head.light .section-desc { color: rgba(255, 255, 255, 0.65); }
.section-head.light .eyebrow { color: var(--accent); }

.eyebrow {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-deep);
}

.section-desc {
  color: var(--muted);
  margin: 0;
  font-size: 1.02rem;
}

/* Advantages — mirrors e22h "我们的服务" */
.advantages {
  background:
    radial-gradient(ellipse at 10% 0%, rgba(74, 159, 216, 0.12), transparent 45%),
    var(--bg);
}

.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.adv-item {
  padding: 1.6rem 1.35rem 1.7rem;
  background: var(--bg-elevated);
  border-top: 3px solid var(--accent);
  box-shadow: 0 10px 30px rgba(26, 28, 31, 0.04);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.adv-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(26, 28, 31, 0.08);
}

.adv-icon {
  display: inline-flex;
  color: var(--accent-deep);
  margin-bottom: 1rem;
}

.adv-item h3 { margin-bottom: 0.45rem; }
.adv-item p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* Products */
.products {
  background: var(--bg-deep);
}

.product-row {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.5rem;
  align-items: center;
  margin-bottom: 3.5rem;
}

.product-row:last-child { margin-bottom: 0; }

.product-row.reverse {
  direction: rtl;
}

.product-row.reverse > * { direction: ltr; }

.product-media {
  position: relative;
  overflow: hidden;
  background: #111;
  min-height: 280px;
}

.product-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 320px;
  transition: transform 0.6s ease;
}

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

.product-tag {
  display: inline-block;
  margin: 0 0 0.65rem;
  padding: 0.2rem 0.65rem;
  background: var(--charcoal);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.product-platform {
  margin: 0 0 1rem;
  color: var(--accent-deep);
  font-weight: 600;
  font-size: 0.95rem;
}

.spec-list {
  margin: 1.25rem 0 1.75rem;
  display: grid;
  gap: 0.55rem;
}

.spec-list li {
  padding-left: 1rem;
  position: relative;
  color: var(--ink-soft);
  font-size: 0.96rem;
}

.spec-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

.spec-list strong {
  font-family: var(--font-body);
  color: var(--ink);
  margin-right: 0.35rem;
}

/* Platforms — dark band like e22h process */
.platforms {
  background:
    linear-gradient(160deg, #1a1c1f 0%, #252830 55%, #1a1c1f 100%);
  color: #fff;
}

.plat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.plat-card {
  padding: 1.5rem 1.25rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-top: 2px solid rgba(74, 159, 216, 0.45);
  transition: background 0.25s ease, border-color 0.25s ease;
}

.plat-card:hover,
.plat-card.featured {
  background: rgba(74, 159, 216, 0.08);
  border-color: rgba(74, 159, 216, 0.35);
  border-top-color: var(--accent);
}

.plat-lane {
  display: inline-block;
  margin-bottom: 0.75rem;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 600;
}

.plat-card h3 {
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.02em;
}

.plat-card p {
  margin: 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.92rem;
}

/* Scenes */
.scenes-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: center;
}

.scenes-media {
  overflow: hidden;
  background: #111;
}

.scenes-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 360px;
}

.scenes-copy .section-head { margin-bottom: 1.5rem; }

.scene-list {
  display: grid;
  gap: 1rem;
}

.scene-list li {
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 0.2rem;
}

.scene-list li:first-child { border-top: 1px solid var(--line); }

.scene-list strong {
  font-family: var(--font-body);
  font-size: 1.02rem;
}

.scene-list span {
  color: var(--muted);
  font-size: 0.92rem;
}

/* Process */
.process {
  background:
    radial-gradient(ellipse at 80% 20%, rgba(74, 159, 216, 0.1), transparent 40%),
    var(--bg-deep);
}

.process-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  counter-reset: none;
}

.process-list li {
  padding: 1.4rem 1.1rem;
  background: var(--bg-elevated);
  border-bottom: 3px solid var(--accent);
  display: grid;
  gap: 0.4rem;
}

.process-list span {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--accent-deep);
  letter-spacing: 0.04em;
}

.process-list strong {
  font-family: var(--font-body);
  font-size: 1.05rem;
}

.process-list em {
  font-style: normal;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

/* About */
.about {
  background: var(--bg);
}

.about-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2.5rem;
  align-items: stretch;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(74, 159, 216, 0.25);
  background: var(--charcoal);
}

.stat {
  padding: 2rem 1.4rem;
  color: #fff;
  display: grid;
  gap: 0.35rem;
  place-content: center;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.stat strong {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 4vw, 3.2rem);
  color: var(--accent);
  line-height: 1;
}

.stat span {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.6);
}

.about-content .section-head { margin-bottom: 1.25rem; }
.about-content p { color: var(--ink-soft); }

/* Contact */
.contact {
  padding-top: 2rem;
  padding-bottom: 5.5rem;
}

.contact-panel {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  padding: 2.5rem;
  background: var(--charcoal);
  color: #fff;
  border-top: 4px solid var(--accent);
}

.contact-copy .eyebrow { color: var(--accent); }
.contact-copy h2 { color: #fff; }
.contact-copy p { color: rgba(255, 255, 255, 0.68); margin-bottom: 0; }

.contact-actions {
  display: grid;
  gap: 0.85rem;
  align-content: center;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.contact-note {
  margin: 0.25rem 0 0;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.45);
}

/* Footer */
.site-footer {
  background: #111214;
  color: rgba(255, 255, 255, 0.5);
  padding: 1.75rem 0;
  font-size: 0.88rem;
}
/* hotlinks */
.footer-inner .footer-hotlinks { flex: 1 1 100%; }
.footer-hotlinks {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem 1rem;
  padding-top: 0.85rem;
  margin-top: 0.35rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.86rem;
}
.footer-hotlinks-label {
  color: rgba(255, 255, 255, 0.55);
  white-space: nowrap;
}
.footer-hotlinks-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.9rem;
}
.footer-hotlinks-list a {
  color: rgba(255, 255, 255, 0.78);
  text-decoration: none;
}
.footer-hotlinks-list a:hover {
  color: #fff;
  text-decoration: underline;
}


.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.footer-brand strong {
  color: var(--accent);
  font-family: var(--font-display);
  letter-spacing: 0.08em;
  font-size: 1.1rem;
}

.site-footer p { margin: 0; }

/* WeChat float + modal */
.wechat-float {
  position: fixed;
  right: 1.25rem;
  bottom: 1.5rem;
  z-index: 60;
}

.wechat-fab {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.75rem 1rem;
  background: var(--wechat);
  color: #fff;
  border-radius: 999px;
  box-shadow: 0 10px 28px rgba(7, 193, 96, 0.35);
  font-weight: 700;
  font-size: 0.9rem;
  transition: transform 0.2s ease, filter 0.2s ease;
}

.wechat-fab:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
}

.wechat-modal[hidden] { display: none; }

.wechat-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 1.25rem;
}

.wechat-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
}

.wechat-modal-panel {
  position: relative;
  width: min(360px, 100%);
  background: #fff;
  padding: 2rem 1.75rem 1.75rem;
  text-align: center;
  border-top: 4px solid var(--accent);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.25);
}

.wechat-modal-close {
  position: absolute;
  top: 0.5rem;
  right: 0.75rem;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--muted);
}

.wechat-modal-panel h3 {
  margin-bottom: 1rem;
  font-family: var(--font-display);
}

.wechat-qr {
  width: 180px;
  height: 180px;
  margin: 0 auto 1rem;
  background: var(--bg-deep);
  display: grid;
  place-items: center;
  position: relative;
}

.wechat-qr img {
  width: 180px;
  height: 180px;
  object-fit: cover;
  position: relative;
  z-index: 1;
}

.wechat-qr-fallback {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.wechat-tip { margin: 0 0 0.35rem; color: var(--muted); font-size: 0.9rem; }
.wechat-id { margin: 0 0 1.1rem; }
.wechat-modal-panel .btn-primary { width: 100%; }

/* Reveal motion */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-reveal].is-inview {
  opacity: 1;
  transform: none;
}

@keyframes hero-drift {
  from { transform: scale(1.04) translate(0, 0); }
  to { transform: scale(1.08) translate(-1.2%, -0.8%); }
}

@keyframes ring-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-photo,
  .hero-ring,
  [data-reveal] {
    animation: none !important;
    transition: none !important;
    opacity: 1;
    transform: none;
  }
}

/* Responsive */
@media (max-width: 1100px) {
  .adv-grid,
  .plat-grid { grid-template-columns: repeat(2, 1fr); }
  .process-list { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  .nav-toggle { display: flex; }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 1.25rem 1.25rem;
    background: rgba(26, 28, 31, 0.98);
    border-bottom: 1px solid rgba(74, 159, 216, 0.25);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.28s ease, opacity 0.28s ease;
  }

  .nav.is-open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .nav a,
  .nav-cta {
    padding: 0.85rem 0.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .nav-cta {
    margin: 0.75rem 0 0;
    text-align: center;
    border-bottom: 0;
  }

  .hero { min-height: 78vh; align-items: end; padding-bottom: 3.5rem; }
  .hero-ring { opacity: 0.35; right: -8%; top: 18%; }

  .product-row,
  .product-row.reverse,
  .scenes-layout,
  .about-layout,
  .contact-panel {
    grid-template-columns: 1fr;
    direction: ltr;
  }

  .process-list { grid-template-columns: 1fr 1fr; }
  .contact-panel { padding: 1.75rem; }
}

@media (max-width: 560px) {
  .adv-grid,
  .plat-grid,
  .process-list,
  .about-stats {
    grid-template-columns: 1fr;
  }

  .hero-actions { width: 100%; }
  .hero-actions .btn { flex: 1; }

  .wechat-fab span { display: none; }
  .wechat-fab { border-radius: 50%; width: 56px; height: 56px; justify-content: center; padding: 0; }
}

/* SEO-GEO-FAQ */
.seo-faq { padding-block: clamp(3rem, 6vw, 5rem); }
.seo-faq-list { max-width: 720px; margin: 0 auto; display: grid; gap: 0.75rem; }
.seo-faq-item {
  border: 1px solid color-mix(in srgb, currentColor 18%, transparent);
  border-radius: 10px;
  padding: 0.85rem 1.1rem;
  background: color-mix(in srgb, currentColor 3%, transparent);
}
.seo-faq-item summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}
.seo-faq-item summary::-webkit-details-marker { display: none; }
.seo-faq-item p {
  margin: 0.65rem 0 0;
  opacity: 0.85;
  line-height: 1.65;
  font-size: 0.95rem;
}

/* ===== 技术资讯：列表可点进详情 ===== */
a.news-item-link {
  display: block;
  color: inherit;
  text-decoration: none;
}
a.news-item-link:hover .news-item-body h2,
a.news-item-link:hover .news-more {
  color: var(--brand, var(--accent, #099dfd));
}
.news-more {
  display: inline-block;
  margin-top: 0.55rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--teal, var(--brand, #099dfd));
}
.news-article-inner {
  max-width: 820px;
}
.news-article-cover {
  margin: 0 0 1.5rem;
  overflow: hidden;
  border-radius: var(--radius, 12px);
  border: 1px solid var(--line, rgba(0,0,0,.08));
}
.news-article-cover img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.news-article-lead {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--ink-soft, var(--muted, #445));
  margin: 0 0 1.75rem;
}
.news-back { margin-top: 2rem; }
.page-hero-compact { padding-bottom: 1.5rem; }
.page-hero { padding: 7.5rem 0 2.5rem; }
.page-lead { max-width: 46rem; color: var(--ink-soft, var(--muted, #445)); }
.breadcrumb { display: flex; flex-wrap: wrap; gap: .45rem; margin-bottom: 1rem; font-size: .9rem; opacity: .85; }
.news-page { padding-top: 0.5rem; padding-bottom: 4rem; }
.news-list { display: grid; gap: 1.5rem; }
.news-item {
  display: grid;
  grid-template-columns: 0.9fr 1.2fr;
  gap: 1.35rem;
  align-items: center;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line, rgba(0,0,0,.1));
}
.news-item-media {
  overflow: hidden;
  border: 1px solid var(--line, rgba(0,0,0,.1));
  aspect-ratio: 16 / 10;
  background: #0b0d10;
  border-radius: 10px;
}
.news-item-media img { width: 100%; height: 100%; object-fit: cover; }
.news-item-body time {
  display: inline-block;
  margin-bottom: 0.45rem;
  color: var(--teal, var(--brand, #099dfd));
  font-size: 0.85rem;
}
.news-item-body h2 { margin: 0 0 0.55rem; font-size: 1.25rem; line-height: 1.4; }
.news-item-body p { margin: 0; color: var(--ink-soft, var(--muted, #445)); line-height: 1.75; }
.news-ticker {
  overflow: hidden;
  border: 1px solid var(--line, rgba(0,0,0,.1));
  border-radius: 999px;
  background: rgba(255,255,255,.45);
  margin-bottom: 1.75rem;
}
.news-ticker-track {
  display: flex;
  gap: 2rem;
  width: max-content;
  padding: 0.7rem 1rem;
  animation: news-marquee 42s linear infinite;
}
.news-ticker:hover .news-ticker-track { animation-play-state: paused; }
.news-ticker-track a, .news-ticker-track span {
  white-space: nowrap;
  font-size: 0.92rem;
  opacity: 0.9;
}
.news-ticker-track time { margin-right: 0.55rem; color: var(--brand, #099dfd); }
@keyframes news-marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
.detail-block { margin-bottom: 1.4rem; }
.detail-block h2 { margin: 0 0 0.55rem; font-size: 1.15rem; }
.detail-block p { margin: 0; color: var(--ink-soft, var(--muted, #445)); line-height: 1.85; }
.detail-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  margin-top: 2rem;
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--line, rgba(0,0,0,.1));
  border-radius: var(--radius, 12px);
  background: rgba(255,255,255,.5);
}
.detail-cta h2 { margin: 0 0 0.35rem; font-size: 1.1rem; }
.detail-cta p { margin: 0; color: var(--muted, #556); }
@media (max-width: 860px) {
  .news-item { grid-template-columns: 1fr; }
}
/* news-figure-rich */

.news-figure {
  margin: 0.85rem 0 1.6rem;
  overflow: hidden;
  border-radius: 12px;
  border: 1px solid var(--line, rgba(0,0,0,.1));
  background: #0b0d10;
}
.news-figure img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}
.news-figure figcaption {
  padding: 0.55rem 0.85rem 0.75rem;
  font-size: 0.88rem;
  color: var(--muted, #667);
  background: rgba(255,255,255,.72);
}

/* news pagination */
.news-pager {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line, rgba(0,0,0,.1));
}
.news-pager-pages {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}
.news-pager-pages a,
.news-pager .pager-prev,
.news-pager .pager-next {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.2rem;
  height: 2.2rem;
  padding: 0 0.7rem;
  border: 1px solid var(--line, rgba(0,0,0,.12));
  border-radius: 8px;
  font-size: 0.92rem;
  text-decoration: none;
  color: inherit;
}
.news-pager-pages a.is-active {
  background: var(--brand, #099dfd);
  border-color: transparent;
  color: #fff;
  font-weight: 700;
}
.news-pager .is-disabled {
  opacity: 0.4;
  pointer-events: none;
}
.news-pager-meta {
  margin: 0.75rem 0 0;
  font-size: 0.88rem;
  color: var(--muted, #667);
}

/* ===== page-hero contrast (light sites) ===== */
.page-hero {
  background: transparent !important;
}
.page-hero h1 {
  color: var(--ink, #0f1724) !important;
}
.page-hero .page-lead {
  color: var(--muted, #334155) !important;
}
.page-hero .breadcrumb,
.page-hero .breadcrumb a,
.page-hero .breadcrumb span {
  color: var(--muted, #64748b) !important;
}
.page-hero .eyebrow {
  color: var(--brand, var(--accent, #099dfd)) !important;
}
/* --- site extensions --- */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.platform-card {
  padding: 1.5rem 1.25rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-top: 2px solid var(--accent);
}
.platform-card h3 {
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.35rem;
}
.platform-card p {
  margin: 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.92rem;
}
.scene-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.scene-card {
  background: var(--bg-elevated);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
}
.scene-card img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}
.scene-copy {
  padding: 1.25rem 1.35rem 1.5rem;
}
.scene-copy h3 {
  margin-bottom: 0.4rem;
}
.scene-copy p {
  margin: 0;
  color: var(--ink-soft);
}
.contact-inner {
  padding: 2.5rem;
  background: var(--charcoal);
  color: #fff;
  border-top: 4px solid var(--accent);
}
.contact-inner .section-head {
  margin-bottom: 1.5rem;
}
.contact-inner .eyebrow {
  color: var(--accent);
}
.contact-inner h2 {
  color: #fff;
}
.contact-inner .section-desc {
  color: rgba(255, 255, 255, 0.68);
}
.contact-inner .contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: start;
}
.about-cta {
  padding: 1.75rem;
  background: var(--bg-elevated);
  border-top: 3px solid var(--accent);
}
.feat-page {
  padding-top: 0;
}
.feat-group {
  margin-bottom: 2.5rem;
  padding: 1.75rem;
  background: var(--bg-elevated);
  border-left: 4px solid var(--accent);
}
.feat-group h3 {
  margin-bottom: 0.75rem;
}
.feat-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem 1.5rem;
}
.feat-list li {
  position: relative;
  padding-left: 1rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}
.feat-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-deep);
}
.page-hero {
  padding: calc(var(--header-h) + 2.5rem) 0 2rem;
  background: var(--charcoal);
  color: #fff;
}
.page-hero .eyebrow {
  color: var(--accent);
}
.page-hero h1 {
  color: #fff;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}
.page-hero p {
  color: rgba(255, 255, 255, 0.7);
  max-width: 40rem;
}
@media (max-width: 900px) {
  .platform-grid,
  .scene-grid,
  .about-grid,
  .feat-list {
    grid-template-columns: 1fr;
  }
}