:root {
  --blue: #4c9aff;
  --blue-deep: #3b82f6;
  --blue-soft: #eaf3ff;
  --logo-orange: #ff7912;
  --ink: #0b1220;
  --ink-mid: #1a2740;
  --text: #1a1d26;
  --text-on-dark: #eef3ff;
  --muted-on-dark: #9bb0c9;
  --ink-soft: #3a4552;
  --muted: #6b7788;
  --line: rgba(255, 255, 255, 0.1);
  --line-dark: rgba(26, 29, 38, 0.12);
  --glow: rgba(76, 154, 255, 0.35);
  --display: "Space Grotesk", "Noto Sans SC", "PingFang SC", sans-serif;
  --body: "Noto Sans SC", "PingFang SC", "Space Grotesk", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: var(--body);
  background: #f0f4f9;
  min-height: 100vh;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  opacity: 0.04;
  z-index: 0;
  mix-blend-mode: overlay;
  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='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.top {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(20px, 4vw, 56px);
  background: linear-gradient(180deg, rgba(11, 18, 32, 0.72), rgba(11, 18, 32, 0));
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  box-shadow: none;
  transition: background 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease,
    backdrop-filter 0.22s ease;
}

.top.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom-color: rgba(26, 29, 38, 0.08);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.top.is-scrolled .brand-lock {
  color: var(--ink);
}

.top.is-scrolled .top-nav > a {
  color: var(--ink-soft);
}

.top.is-scrolled .top-nav > a:hover {
  color: var(--ink);
}

.top.is-scrolled .eco-menu > summary {
  color: var(--ink-soft);
  -webkit-text-fill-color: var(--ink-soft);
}

@media (prefers-reduced-motion: reduce) {
  .top {
    transition: none;
  }
}

.brand-lock {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-on-dark);
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  position: relative;
}

.brand-lock img {
  display: block;
}

.brand-spark {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--logo-orange);
  box-shadow: 0 0 12px rgba(255, 121, 18, 0.7);
  margin-left: 2px;
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 12px 16px;
}

.top-nav > a {
  color: var(--muted-on-dark);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
}

.top-nav > a:hover {
  color: #fff;
}

.eco-menu {
  position: relative;
}

.eco-menu > summary {
  list-style: none;
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  cursor: pointer;
  color: var(--muted-on-dark);
  -webkit-text-fill-color: var(--muted-on-dark);
  font-size: 0.92rem;
  font-weight: 500;
  border: 0;
  border-radius: 0;
  padding: 0;
  background: transparent;
  user-select: none;
}

.eco-menu > summary::-webkit-details-marker {
  display: none;
}

.eco-menu > summary::marker {
  content: "";
  font-size: 0;
}

/* 小箭头：更多产品 ▾ */
.eco-menu > summary::after {
  content: "";
  display: block;
  width: 0.4em;
  height: 0.4em;
  margin-top: -0.15em;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.15s ease, margin 0.15s ease;
}

.eco-menu[open] > summary::after {
  margin-top: 0.15em;
  transform: rotate(225deg);
}

.eco-menu > summary:hover,
.eco-menu[open] > summary {
  color: #fff;
  -webkit-text-fill-color: #fff;
}

.eco-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  z-index: 40;
  width: min(17rem, calc(100vw - 2rem));
  padding: 0.5rem 0;
  border-radius: 1rem;
  border: 1px solid #e4e4e7;
  background: #fff;
  box-shadow: 0 16px 40px rgba(15, 15, 18, 0.12);
}

.eco-label {
  margin: 0;
  padding: 0.35rem 0.9rem 0.25rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: #a1a1aa;
}

.eco-panel a,
.foot-eco-grid a {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  padding: 0.55rem 0.9rem;
  text-decoration: none;
  color: inherit;
}

.eco-panel a:hover,
.foot-eco-grid a:hover {
  background: #fafafa;
}

.eco-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: #18181b;
}

.eco-hint {
  font-size: 0.75rem;
  color: #71717a;
}

.foot-eco {
  margin: 0.75rem 0 1rem;
}

.foot-eco-grid {
  display: grid;
  gap: 0.25rem;
  margin-top: 0.35rem;
}

@media (min-width: 640px) {
  .foot-eco-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  overflow: hidden;
  color: var(--text-on-dark);
  background: linear-gradient(165deg, #0b1220 0%, #121c30 45%, #1a2740 100%);
}

.hero-atmosphere {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-atmosphere .grid {
  position: absolute;
  inset: 0;
  opacity: 0.22;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 20%, transparent 75%);
}

.aurora {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
  will-change: transform;
}

.aurora.a1 {
  width: min(52vw, 560px);
  height: min(52vw, 560px);
  top: -8%;
  right: 8%;
  background: radial-gradient(circle, rgba(76, 154, 255, 0.45), transparent 68%);
}

.aurora.a2 {
  width: min(40vw, 420px);
  height: min(40vw, 420px);
  bottom: 8%;
  left: -6%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.28), transparent 70%);
}

.aurora.a3 {
  width: 180px;
  height: 180px;
  top: 38%;
  left: 42%;
  background: radial-gradient(circle, rgba(255, 121, 18, 0.22), transparent 70%);
}

.orbit {
  position: absolute;
  width: min(70vw, 720px);
  height: min(70vw, 720px);
  top: 50%;
  left: 55%;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(76, 154, 255, 0.15);
  border-radius: 50%;
  box-shadow: inset 0 0 80px rgba(76, 154, 255, 0.06);
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1180px;
  margin: 0 auto;
  min-height: 100vh;
  min-height: 100dvh;
  padding: clamp(100px, 14vh, 140px) clamp(20px, 4vw, 56px) 72px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}

.brand-hero {
  margin: 0 0 12px;
  font-family: var(--display);
  font-size: clamp(3.4rem, 9vw, 6.2rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.95;
  color: #fff;
  text-shadow: 0 0 60px rgba(76, 154, 255, 0.25);
}

.hero h1 {
  margin: 0 0 16px;
  font-family: var(--display);
  font-size: clamp(1.35rem, 2.8vw, 1.9rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-on-dark);
}

.lead {
  margin: 0 0 32px;
  max-width: 36ch;
  color: var(--muted-on-dark);
  font-size: 1.08rem;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 12px;
  font-family: var(--body);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.btn.primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 12px 32px rgba(76, 154, 255, 0.35);
}

.btn.primary:hover {
  background: var(--blue-deep);
  transform: translateY(-2px);
}

.btn.ghost {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.18);
  color: #fff;
  backdrop-filter: blur(8px);
}

.btn.ghost:hover {
  border-color: rgba(76, 154, 255, 0.55);
  background: rgba(76, 154, 255, 0.12);
}

.btn.ghost.dark {
  color: var(--text);
  background: rgba(255, 255, 255, 0.7);
  border-color: var(--line-dark);
}

.btn.ghost.dark:hover {
  border-color: rgba(76, 154, 255, 0.45);
  color: var(--blue-deep);
  background: var(--blue-soft);
}

.btn.text {
  background: transparent;
  color: var(--blue-deep);
  min-height: 40px;
  padding: 0 8px;
  box-shadow: none;
}

.hero-visual {
  position: relative;
  min-height: 440px;
  display: grid;
  place-items: center;
  will-change: transform;
}

.device.glass {
  position: relative;
  width: min(380px, 94%);
  padding: 18px 18px 20px;
  border-radius: 26px;
  background: linear-gradient(160deg, rgba(22, 32, 48, 0.92), rgba(12, 18, 30, 0.96));
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #e8eee9;
  box-shadow:
    0 40px 80px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(76, 154, 255, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px);
}

.device-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 18px;
  opacity: 0.9;
}

.device-bar .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3d4a57;
}

.device-bar .dot:first-child {
  background: #ff5f57;
}
.device-bar .dot:nth-child(2) {
  background: #febc2e;
}
.device-bar .dot:nth-child(3) {
  background: #28c840;
}

.device-title {
  margin-left: auto;
  font-family: var(--display);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #9bbce0;
}

.bubble {
  max-width: 88%;
  margin-bottom: 11px;
  padding: 11px 13px;
  border-radius: 14px;
  font-size: 0.92rem;
  line-height: 1.4;
  opacity: 0;
  transform: translateY(10px);
}

.bubble.visible {
  opacity: 1;
  transform: none;
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.bubble.in {
  background: #243039;
  border-bottom-left-radius: 4px;
}

.bubble.out {
  margin-left: auto;
  background: var(--blue);
  color: #fff;
  border-bottom-right-radius: 4px;
}

.bubble.soft {
  background: #243447;
  color: #c5dbf7;
}

.device-input {
  margin-top: 16px;
  padding: 11px 13px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  color: #7f8e99;
  font-size: 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

/* ===== Light bands ===== */
.light-band {
  background: linear-gradient(180deg, #eef3f9 0%, #f5f7fb 50%, #f0f4f9 100%);
  color: var(--text);
}

.band-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(72px, 10vw, 110px) clamp(20px, 4vw, 56px);
}

.eyebrow {
  margin: 0 0 10px;
  font-family: var(--display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue-deep);
}

.capabilities h2,
.use-cases h2,
.fit-band h2,
.faq h2,
.try h2 {
  margin: 0 0 10px;
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  letter-spacing: -0.03em;
}

/* ===== Trust strip ===== */
.trust-strip {
  background: #fff;
  border-block: 1px solid rgba(26, 29, 38, 0.08);
}

.trust-inner {
  padding-top: clamp(28px, 4vw, 40px);
  padding-bottom: clamp(28px, 4vw, 40px);
}

.trust-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px 24px;
}

.trust-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.trust-list strong {
  font-size: 0.95rem;
  color: var(--ink);
}

.trust-list span {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.45;
}

/* ===== Use cases ===== */
.use-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.use-card {
  padding: 1.35rem 1.4rem;
  border-radius: 1rem;
}

.use-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  color: var(--ink);
}

.use-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.55;
}

/* ===== Fit / not fit ===== */
.fit-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.fit-card {
  padding: 1.35rem 1.4rem;
  border-radius: 1rem;
}

.fit-card h3 {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
  color: var(--ink);
}

.fit-card ul {
  margin: 0;
  padding: 0 0 0 1.1rem;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.fit-card li + li {
  margin-top: 0.4rem;
}

.fit-yes {
  border: 1px solid rgba(7, 193, 96, 0.22);
}

.fit-no {
  border: 1px solid rgba(15, 23, 42, 0.1);
}

/* ===== Pricing ===== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  align-items: stretch;
}

.pricing-card {
  display: flex;
  flex-direction: column;
  padding: clamp(24px, 3vw, 32px);
  border-radius: 22px;
  border: 1px solid rgba(26, 29, 38, 0.1);
}

.pricing-card-ops {
  border-color: rgba(255, 121, 18, 0.35);
  box-shadow: 0 16px 40px rgba(255, 121, 18, 0.08);
}

.pricing-kicker {
  margin: 0 0 10px;
  font-family: var(--display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-deep);
}

.pricing-badge {
  display: inline-block;
  align-self: flex-start;
  margin: 0 0 14px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  line-height: 1.3;
}

.pricing-badge-std {
  background: rgba(15, 23, 42, 0.06);
  color: var(--ink);
}

.pricing-badge-ops {
  background: rgba(255, 121, 18, 0.12);
  color: #c2410c;
}

.pricing-price {
  margin: 0 0 12px;
  font-family: var(--display);
  font-size: clamp(2.2rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1;
}

.pricing-price span {
  margin-left: 4px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0;
}

.pricing-lead {
  margin: 0 0 18px;
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.55;
}

.pricing-include-label {
  margin: 0 0 8px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink);
}

.pricing-features {
  margin: 0 0 16px;
  padding: 0 0 0 1.15rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
  line-height: 1.5;
  flex: 1;
}

.pricing-features li + li {
  margin-top: 0.35rem;
}

.pricing-exclude {
  margin: 0 0 18px;
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--muted);
}

.pricing-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: auto;
}

.pricing-footnote {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--muted);
}

@media (max-width: 900px) {
  .pricing-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== FAQ ===== */
.faq-list {
  display: grid;
  gap: 10px;
  max-width: 720px;
}

.faq-item {
  border: 1px solid rgba(26, 29, 38, 0.1);
  border-radius: 12px;
  background: #fff;
  padding: 0.15rem 1rem;
}

.faq-item > summary {
  list-style: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--ink);
  padding: 0.95rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.faq-item > summary::-webkit-details-marker {
  display: none;
}

.faq-item > summary::after {
  content: "";
  width: 0.4em;
  height: 0.4em;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: rotate(45deg);
  flex-shrink: 0;
  margin-top: -0.2em;
  transition: transform 0.15s ease;
}

.faq-item[open] > summary::after {
  transform: rotate(225deg);
  margin-top: 0.15em;
}

.faq-item p {
  margin: 0 0 1rem;
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.6;
}

.demo-banner {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin: 0 0 28px;
  padding: 0.9rem 1.1rem;
  border-radius: 12px;
  background: var(--blue-soft);
  border: 1px solid rgba(76, 154, 255, 0.25);
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.5;
}

.demo-banner strong {
  color: var(--blue-deep);
  font-size: 0.85rem;
}

.section-lead {
  margin: 0 0 48px;
  color: var(--muted);
  max-width: 40ch;
  font-size: 1.05rem;
}

.cap-story {
  list-style: none;
  margin: 0;
  padding: 0;
}

.cap-story li {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 28px;
  align-items: start;
  padding: 36px 0;
  border-top: 1px solid var(--line-dark);
}

.cap-story li:last-child {
  border-bottom: 1px solid var(--line-dark);
}

.cap-num {
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--blue);
  line-height: 1;
}

.cap-story h3 {
  margin: 0 0 8px;
  font-family: var(--display);
  font-size: clamp(1.35rem, 2.4vw, 1.7rem);
  letter-spacing: -0.02em;
}

.cap-story p {
  margin: 0;
  color: var(--ink-soft);
  max-width: 48ch;
  font-size: 1.05rem;
}

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

.try-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.admin-demo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  margin: 0 0 16px;
}

.admin-demo-creds {
  width: 100%;
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--blue-soft, #eef4fc);
  border: 1px solid rgba(55, 110, 180, 0.12);
}

.admin-demo-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 8px;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.admin-demo-row:last-of-type {
  margin-bottom: 0;
}

.admin-demo-row code {
  font-family: var(--display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
  user-select: all;
}

.admin-demo-note {
  margin: 10px 0 0;
  font-size: 0.78rem;
  color: var(--muted);
  line-height: 1.4;
}

.admin-demo-status {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.admin-demo-status.is-err {
  color: #c2410c;
}

.admin-demo-status.is-ok {
  color: #15803d;
}

.admin-demo .btn[disabled] {
  opacity: 0.65;
  cursor: wait;
}

.try-pane.glass-lite {
  padding: clamp(28px, 4vw, 40px);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 20px 50px rgba(55, 90, 140, 0.1);
  backdrop-filter: blur(12px);
}

.try-kicker {
  margin: 0 0 10px;
  font-family: var(--display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-deep);
}

.try-pane h3 {
  margin: 0 0 12px;
  font-family: var(--display);
  font-size: 1.45rem;
  letter-spacing: -0.02em;
}

.try-pane > p {
  margin: 0 0 22px;
  color: var(--ink-soft);
}

@media (max-width: 1100px) {
  .try-grid-3 {
    grid-template-columns: 1fr 1fr;
  }
}

.try-pane .btn {
  margin-right: 8px;
  margin-bottom: 8px;
}

.qr-block {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 0 0 20px;
}

.qr-img {
  width: 148px;
  height: 148px;
  border-radius: 14px;
  background: #fff;
  padding: 8px;
  border: 1px solid var(--line-dark);
  object-fit: contain;
}

.qr-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.qr-meta code {
  font-family: var(--display);
  font-size: 0.8rem;
  color: var(--muted);
}

.demo-note {
  margin: 36px 0 0;
  font-size: 0.88rem;
  color: var(--muted);
  max-width: 62ch;
}

.foot {
  border-top: 1px solid var(--line-dark);
}

.foot .band-inner {
  padding-top: 48px;
  padding-bottom: 56px;
}

.foot-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--display);
  font-weight: 700;
  margin-bottom: 14px;
}

.foot-brand .muted {
  font-weight: 500;
  color: var(--muted);
}

.foot-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 18px;
  margin-bottom: 12px;
}

.foot-links a,
.beian a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.9rem;
}

.foot-links a:hover,
.beian a:hover {
  color: var(--blue-deep);
}

.beian {
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
}

/* Reveals */
.reveal-hero {
  opacity: 0;
  transform: translateY(22px);
}

.reveal-hero.in {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-hero.in:nth-child(1) {
  transition-delay: 0.05s;
}
.reveal-hero.in:nth-child(2) {
  transition-delay: 0.14s;
}
.reveal-hero.in:nth-child(3) {
  transition-delay: 0.22s;
}
.reveal-hero.in:nth-child(4) {
  transition-delay: 0.3s;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
}

.reveal.in {
  opacity: 1;
  transform: none;
  transition: opacity 0.65s ease, transform 0.65s ease;
}

@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    padding-top: 96px;
    gap: 40px;
  }

  .hero-visual {
    min-height: 360px;
    order: -1;
  }

  .brand-hero {
    font-size: clamp(2.8rem, 14vw, 4rem);
  }

  .try-grid,
  .try-grid-3 {
    grid-template-columns: 1fr;
  }

  .cap-story li {
    grid-template-columns: 64px 1fr;
    gap: 16px;
  }

  /* 窄屏只保留「预约演示」+ 更多产品；勿误伤 .eco-panel 内链接 */
  .top-nav > a:not(#cs-nav) {
    display: none;
  }

  .top-nav {
    flex-wrap: nowrap;
    flex-shrink: 0;
    gap: 10px;
  }

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

  .use-grid {
    grid-template-columns: 1fr;
  }

  .fit-grid {
    grid-template-columns: 1fr;
  }

  .eco-menu {
    flex-shrink: 0;
  }

  .eco-panel {
    position: fixed;
    top: calc(4.75rem + env(safe-area-inset-top, 0px));
    left: auto;
    right: max(20px, env(safe-area-inset-right));
    width: min(16rem, calc(100vw - 2.5rem));
    z-index: 45;
    max-height: min(70vh, calc(100dvh - 6rem));
    overflow-y: auto;
  }

  .eco-panel a {
    flex-direction: column;
  }
}

/* —— 智能客服浮标（对齐云管家） —— */
.cs-float {
  position: fixed;
  z-index: 60;
  right: max(20px, env(safe-area-inset-right));
  bottom: max(24px, env(safe-area-inset-bottom));
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  background: #07c160;
  color: #fff;
  cursor: pointer;
  box-shadow: 0 10px 28px rgba(6, 95, 48, 0.28);
  transition: background 0.2s ease, transform 0.2s ease;
}

.cs-float:hover {
  background: #06ad56;
}

.cs-float:active {
  transform: scale(0.96);
}

.cs-float-icon {
  display: block;
}

.cs-modal {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 16px;
  padding-bottom: max(16px, env(safe-area-inset-bottom));
}

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

.cs-modal-backdrop {
  position: absolute;
  inset: 0;
  border: 0;
  background: rgba(0, 0, 0, 0.4);
  cursor: default;
}

.cs-modal-panel {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 24rem;
  padding: 24px;
  border-radius: 16px;
  border: 1px solid #e4e4e7;
  background: #fff;
  box-shadow: 0 20px 48px rgba(15, 23, 42, 0.18);
  color: #18181b;
  font-family: var(--body);
}

.cs-modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #a1a1aa;
  cursor: pointer;
}

.cs-modal-close:hover {
  background: #f4f4f5;
  color: #3f3f46;
}

.cs-modal-panel h3 {
  margin: 0 28px 0 0;
  font-size: 1.125rem;
  font-weight: 600;
  color: #18181b;
}

.cs-modal-hint {
  margin: 6px 28px 0 0;
  font-size: 0.875rem;
  line-height: 1.5;
  color: #64748b;
}

.cs-qr {
  display: block;
  width: 208px;
  height: 208px;
  margin: 20px auto 0;
  padding: 8px;
  object-fit: contain;
  border-radius: 12px;
  border: 1px solid #f4f4f5;
  background: #fff;
}

.cs-weixin-btn {
  display: flex;
  width: 100%;
  margin-top: 20px;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  border: 1px solid #e4e4e7;
  border-radius: 12px;
  background: #fff;
  color: #3f3f46;
  font: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s ease;
}

.cs-weixin-btn:hover {
  background: #fafafa;
}

@media (min-width: 640px) {
  .cs-float {
    right: max(32px, env(safe-area-inset-right));
    bottom: max(32px, env(safe-area-inset-bottom));
  }

  .cs-modal {
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .reveal-hero,
  .reveal,
  .bubble {
    opacity: 1 !important;
    transform: none !important;
  }
}