/**
 * 小飞标书首页 — 与 auth-split 统一的 B2B 视觉语言
 */
html {
  scroll-behavior: smooth;
}

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

.landing-page {
  --landing-primary: #1664ff;
  --landing-primary-hover: #0e52d9;
  --landing-primary-light: #4d9fff;
  --landing-primary-soft: #e8f3ff;
  --landing-primary-glow: rgba(22, 100, 255, 0.35);
  --landing-text: #1d2129;
  --landing-text-secondary: #4e5969;
  --landing-text-muted: #86909c;
  --landing-border: #e5e6eb;
  --landing-bg: #f4f7fc;
  --landing-surface: #ffffff;
  --landing-radius: 12px;
  --landing-radius-lg: 16px;
  --landing-max: 1120px;

  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-width: 0;
  color: var(--landing-text);
  background: var(--landing-bg);
}

/* ── Header ── */
.landing-header {
  position: sticky;
  top: 0;
  z-index: 100;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--landing-border);
}

.landing-header-inner {
  max-width: var(--landing-max);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 24px);
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.landing-header-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  flex-shrink: 0;
}

.landing-header-mark img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: block;
}

.landing-header-brand-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.landing-header-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--landing-text);
}

.landing-header-sub {
  font-size: 11px;
  color: var(--landing-text-muted);
}

.landing-header-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.landing-header-nav--desktop {
  flex-wrap: wrap;
  justify-content: flex-end;
}

@media (max-width: 768px) {
  .landing-header-nav--desktop {
    display: none;
  }
}

.landing-header-link {
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--landing-text-secondary);
  text-decoration: none;
  transition: color 0.15s ease, background 0.15s ease;
}

.landing-header-link:hover {
  color: var(--landing-primary);
  background: var(--landing-primary-soft);
}

.landing-header-link--active {
  color: var(--landing-primary);
  background: var(--landing-primary-soft);
}

.landing-header-link--cta {
  background: linear-gradient(135deg, var(--landing-primary) 0%, #0052d9 100%);
  color: #fff !important;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(22, 100, 255, 0.35);
}

.landing-header-link--cta:hover {
  background: var(--landing-primary-hover);
  color: #fff !important;
}

a.landing-header-link {
  cursor: pointer;
}

.landing-header-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--landing-text);
  cursor: pointer;
}

.landing-header-menu-btn:hover {
  background: var(--landing-primary-soft);
  color: var(--landing-primary);
}

@media (max-width: 768px) {
  .landing-header-menu-btn {
    display: inline-flex;
  }
}

.landing-header-drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 8px;
}

.landing-header-drawer-link {
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--landing-text);
  text-decoration: none;
}

.landing-header-drawer-link:hover {
  background: var(--landing-primary-soft);
  color: var(--landing-primary);
}

.landing-header-drawer-link--active {
  background: var(--landing-primary-soft);
  color: var(--landing-primary);
}

/* ── Layout ── */
.landing-main {
  flex: 1;
  min-width: 0;
}

.landing-wrap {
  max-width: var(--landing-max);
  margin: 0 auto;
  padding-inline: clamp(16px, 4vw, 24px);
}

.landing-section {
  padding-block: clamp(48px, 8vw, 72px);
  scroll-margin-top: 72px;
}

.landing-section--surface {
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.landing-section--mesh {
  position: relative;
  background:
    radial-gradient(ellipse 70% 50% at 50% 0%, rgba(22, 100, 255, 0.06), transparent 60%),
    var(--landing-bg);
}

.landing-section-head {
  max-width: 640px;
  margin-bottom: 32px;
}

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

.landing-section-head--center .landing-h2::after {
  content: '';
  display: block;
  width: 48px;
  height: 4px;
  margin: 14px auto 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--landing-primary), var(--landing-primary-light));
}

.landing-h2 {
  margin: 0 0 12px;
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--landing-text);
  line-height: 1.3;
}

.landing-section-lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--landing-text-secondary);
}

/* ── Hero ── */
.landing-hero {
  position: relative;
  padding-block: clamp(48px, 8vw, 80px);
  overflow: hidden;
  background: linear-gradient(165deg, #eef4ff 0%, #f8fbff 38%, #ffffff 72%, #f4f7fc 100%);
}

.landing-hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.landing-hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(22, 100, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 100, 255, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 30%, #000 20%, transparent 75%);
}

.landing-hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
}

.landing-hero-orb--1 {
  width: 420px;
  height: 420px;
  top: -120px;
  right: -80px;
  background: radial-gradient(circle, rgba(22, 100, 255, 0.35) 0%, transparent 70%);
}

.landing-hero-orb--2 {
  width: 320px;
  height: 320px;
  bottom: -60px;
  left: -60px;
  background: radial-gradient(circle, rgba(77, 159, 255, 0.28) 0%, transparent 70%);
}

.landing-hero-orb--3 {
  width: 200px;
  height: 200px;
  top: 40%;
  left: 45%;
  background: radial-gradient(circle, rgba(22, 100, 255, 0.15) 0%, transparent 70%);
}

.landing-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(32px, 5vw, 56px);
  align-items: center;
}

@media (max-width: 960px) {
  .landing-hero-grid {
    grid-template-columns: 1fr;
  }
}

.landing-hero-copy {
  max-width: 520px;
}

.landing-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 18px;
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--landing-primary);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(232, 243, 255, 0.9));
  border: 1px solid rgba(22, 100, 255, 0.2);
  box-shadow: 0 2px 12px rgba(22, 100, 255, 0.1);
}

.landing-hero-badge-ico {
  flex-shrink: 0;
}

.landing-hero-h1 {
  margin: 0 0 16px;
  font-size: clamp(28px, 4.5vw, 42px);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.03em;
  color: var(--landing-text);
}

.landing-hero-accent {
  background: linear-gradient(135deg, var(--landing-primary) 0%, #0052d9 55%, #003eb3 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.landing-hero-lead {
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--landing-text-secondary);
}

.landing-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.landing-hero-note {
  margin: 0 0 24px;
  font-size: 13px;
  color: var(--landing-text-muted);
}

.landing-hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  border-top: none;
}

@media (max-width: 560px) {
  .landing-hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

.landing-hero-stat {
  margin: 0;
  padding: 14px 12px;
  border-radius: 12px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.92), rgba(232, 243, 255, 0.65));
  border: 1px solid rgba(22, 100, 255, 0.14);
  box-shadow: 0 4px 16px rgba(22, 100, 255, 0.06);
  text-align: center;
}

.landing-hero-stat-value {
  margin: 0 0 4px;
  font-size: 24px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--landing-primary), var(--landing-primary-light));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.2;
}

.landing-hero-stat-suffix {
  font-size: 14px;
  font-weight: 600;
  margin-left: 2px;
}

.landing-hero-stat-label {
  margin: 0;
  font-size: 12px;
  color: var(--landing-text-muted);
  line-height: 1.4;
}

/* Hero illustration area */
.landing-hero-visual {
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.landing-hero-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  max-width: 480px;
}

.landing-hero-chip {
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  color: var(--landing-primary);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(22, 100, 255, 0.18);
  box-shadow: 0 2px 10px rgba(22, 100, 255, 0.08);
}

.landing-hero-visual-cta {
  display: inline-flex;
  align-items: center;
  padding: 10px 22px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  background: linear-gradient(135deg, var(--landing-primary), #0052d9);
  box-shadow: 0 6px 20px rgba(22, 100, 255, 0.32);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.landing-hero-visual-cta:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(22, 100, 255, 0.4);
}

/* ── 客户端下载 ── */
.landing-client-download {
  position: relative;
  /* 不可 hidden：安卓/iOS 二维码浮层会向下溢出到下一区块 */
  overflow: visible;
  z-index: 3;
  padding: clamp(56px, 8vw, 88px) 0;
  background:
    linear-gradient(180deg, #f7f9fc 0%, #eef2f7 100%);
}

.landing-client-download::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(640px 360px at 88% 42%, rgba(22, 100, 255, 0.08), transparent 62%),
    radial-gradient(480px 280px at 72% 68%, rgba(77, 159, 255, 0.06), transparent 58%);
  pointer-events: none;
}

.landing-client-download-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
  gap: clamp(28px, 5vw, 56px);
  align-items: center;
}

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

  .landing-client-download-visual {
    order: -1;
    min-height: 220px;
  }
}

.landing-client-download-copy {
  min-width: 0;
}

.landing-client-download-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
  margin: 0 0 14px;
}

.landing-client-download-title {
  margin: 0;
  font-size: clamp(32px, 4.8vw, 48px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--landing-text);
}

.landing-client-download-gift {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, #ff6a3d 0%, #ff8f4a 100%);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1;
  text-decoration: none;
  box-shadow: 0 6px 16px rgba(255, 106, 61, 0.28);
  transform: translateY(-2px);
  cursor: pointer;
  transition: filter 0.15s ease, transform 0.15s ease;
}

.landing-client-download-gift:hover {
  filter: brightness(1.05);
  transform: translateY(-3px);
  color: #fff;
}

.landing-client-download-lead {
  margin: 0 0 clamp(28px, 4vw, 36px);
  font-size: clamp(16px, 2.2vw, 20px);
  line-height: 1.5;
  color: var(--landing-text-secondary);
}

.landing-client-download-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.landing-client-download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 168px;
  height: 48px;
  padding: 0 28px;
  border: none;
  border-radius: 999px;
  background: linear-gradient(90deg, #1664ff 0%, #4d9fff 100%);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 10px 28px rgba(22, 100, 255, 0.28);
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    filter 0.18s ease;
}

.landing-client-download-btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.03);
  box-shadow: 0 14px 32px rgba(22, 100, 255, 0.34);
}

.landing-client-download-btn:active {
  transform: translateY(0);
}

.landing-client-download-btn:disabled {
  opacity: 0.65;
  cursor: wait;
  transform: none;
  filter: none;
}

.landing-client-download-btn--outline {
  background: #fff;
  color: var(--landing-primary);
  border: 1.5px solid rgba(22, 100, 255, 0.38);
  box-shadow: 0 6px 18px rgba(22, 100, 255, 0.1);
}

.landing-client-download-btn--outline:hover:not(:disabled) {
  background: var(--landing-primary-soft);
  border-color: rgba(22, 100, 255, 0.55);
  filter: none;
  box-shadow: 0 10px 24px rgba(22, 100, 255, 0.16);
}

.landing-client-download-mobile {
  position: relative;
  z-index: 5;
}

.landing-client-download-qr {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  z-index: 30;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 176px;
  padding: 14px 12px 12px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid rgba(229, 230, 235, 0.95);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.14);
  transform: translateX(-50%);
}

.landing-client-download-qr img {
  display: block;
  width: 148px;
  height: 148px;
  border-radius: 6px;
}

.landing-client-download-qr-hint {
  margin: 0;
  font-size: 12px;
  line-height: 1.4;
  color: var(--landing-text-muted);
  text-align: center;
}

.landing-client-download-link {
  color: var(--landing-primary);
  font-weight: 500;
  text-decoration: none;
}

.landing-client-download-link:hover {
  text-decoration: underline;
}

.landing-client-download-mac {
  position: relative;
}

.landing-client-download-chevron {
  transition: transform 0.18s ease;
}

.landing-client-download-chevron.is-open {
  transform: rotate(180deg);
}

.landing-client-download-menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  z-index: 20;
  min-width: 168px;
  padding: 8px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid rgba(229, 230, 235, 0.95);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
}

.landing-client-download-menu-item {
  display: block;
  width: 100%;
  padding: 12px 16px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--landing-text-secondary);
  font-size: 15px;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.landing-client-download-menu-item:hover {
  background: var(--landing-primary-soft);
  color: var(--landing-primary);
}

.landing-client-download-note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--landing-text-muted);
}

.landing-client-download-visual {
  position: relative;
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.landing-client-download-device {
  position: relative;
  width: min(100%, 420px);
  aspect-ratio: 1.15;
  filter: blur(0.2px);
  opacity: 0.92;
}

.landing-client-download-screen {
  position: absolute;
  top: 8%;
  left: 10%;
  right: 6%;
  height: 52%;
  border-radius: 14px 14px 4px 4px;
  background: linear-gradient(145deg, #ffffff 0%, #f3f6fb 100%);
  box-shadow:
    0 24px 48px rgba(15, 23, 42, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.95);
  overflow: hidden;
}

.landing-client-download-screen-bar {
  display: block;
  height: 28px;
  background: linear-gradient(180deg, #eef2f8 0%, #e7edf6 100%);
}

.landing-client-download-screen-line {
  display: block;
  height: 10px;
  margin: 14px 18px 0;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(22, 100, 255, 0.18), rgba(22, 100, 255, 0.06));
}

.landing-client-download-screen-line--1 {
  width: 72%;
}

.landing-client-download-screen-line--2 {
  width: 56%;
  opacity: 0.75;
}

.landing-client-download-screen-line--3 {
  width: 64%;
  opacity: 0.55;
}

.landing-client-download-keyboard {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 42%;
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72) 0%, rgba(232, 237, 245, 0.88) 100%);
  box-shadow: 0 28px 60px rgba(15, 23, 42, 0.14);
  transform: perspective(900px) rotateX(18deg);
  transform-origin: center bottom;
}

.landing-client-download-keyboard::before {
  content: '';
  position: absolute;
  inset: 18% 8% 22%;
  border-radius: 10px;
  background:
    repeating-linear-gradient(
      90deg,
      rgba(148, 163, 184, 0.16) 0,
      rgba(148, 163, 184, 0.16) 1px,
      transparent 1px,
      transparent 14px
    ),
    repeating-linear-gradient(
      180deg,
      rgba(148, 163, 184, 0.12) 0,
      rgba(148, 163, 184, 0.12) 1px,
      transparent 1px,
      transparent 12px
    );
  opacity: 0.65;
}

.landing-hero-preview {
  min-width: 0;
  position: relative;
}

.landing-hero-preview::before {
  content: '';
  position: absolute;
  inset: 12% -8% -8% 8%;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(22, 100, 255, 0.2), rgba(77, 159, 255, 0.12));
  filter: blur(28px);
  z-index: 0;
}

.landing-preview-frame {
  position: relative;
  z-index: 1;
  border-radius: var(--landing-radius-lg);
  border: 2px solid transparent;
  background:
    linear-gradient(#fff, #fff) padding-box,
    linear-gradient(135deg, rgba(22, 100, 255, 0.45), rgba(77, 159, 255, 0.25), rgba(22, 100, 255, 0.15)) border-box;
  box-shadow:
    0 0 0 1px rgba(22, 100, 255, 0.06),
    0 24px 56px -12px rgba(22, 100, 255, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
  overflow: hidden;
  animation: landing-preview-float 6s ease-in-out infinite;
}

@keyframes landing-preview-float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

.landing-preview-top {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  background: linear-gradient(90deg, #0e52d9 0%, var(--landing-primary) 100%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.landing-preview-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
}

.landing-preview-dot:nth-child(1) {
  background: #ff5f57;
}

.landing-preview-dot:nth-child(2) {
  background: #febc2e;
}

.landing-preview-dot:nth-child(3) {
  background: #28c840;
}

.landing-preview-title {
  margin-left: 8px;
  font-size: 13px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.92);
}

.landing-preview-body {
  padding: 20px 22px 22px;
  background: linear-gradient(180deg, #fafcff 0%, #ffffff 100%);
}

.landing-preview-lead {
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--landing-text-secondary);
  background: var(--landing-primary-soft);
  border-left: 3px solid var(--landing-primary);
}

.landing-preview-list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.landing-preview-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 14px;
  line-height: 1.45;
  color: var(--landing-text);
  background: #fff;
  border: 1px solid rgba(22, 100, 255, 0.1);
  box-shadow: 0 2px 8px rgba(22, 100, 255, 0.04);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.landing-preview-item:hover {
  border-color: rgba(22, 100, 255, 0.28);
  box-shadow: 0 6px 20px rgba(22, 100, 255, 0.1);
  transform: translateX(4px);
}

.landing-preview-item-num {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--landing-primary), var(--landing-primary-light));
}

.landing-preview-item-text {
  flex: 1;
  min-width: 0;
  font-weight: 500;
}

.landing-preview-cta {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  background: linear-gradient(135deg, var(--landing-primary), #0052d9);
  box-shadow: 0 4px 14px rgba(22, 100, 255, 0.3);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.landing-preview-cta:hover {
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(22, 100, 255, 0.38);
}

/* Workflow steps */
.landing-workflow {
  background: linear-gradient(180deg, #ffffff 0%, #eef4ff 55%, #f8fbff 100%);
}

.landing-workflow-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

@media (min-width: 768px) {
  .landing-workflow-steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.landing-workflow-step {
  position: relative;
  padding: 22px 16px 20px;
  border-radius: var(--landing-radius-lg);
  background: #fff;
  border: 1px solid rgba(22, 100, 255, 0.12);
  box-shadow: 0 8px 28px rgba(22, 100, 255, 0.08);
  text-align: center;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.landing-workflow-step:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(22, 100, 255, 0.14);
}

@media (min-width: 768px) {
  .landing-workflow-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -12px;
    width: 24px;
    height: 2px;
    background: linear-gradient(90deg, var(--landing-primary), var(--landing-primary-light));
    transform: translateY(-50%);
    z-index: 1;
    opacity: 0.45;
  }
}

.landing-workflow-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 22px;
  margin-bottom: 12px;
  padding: 0 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--landing-primary);
  background: var(--landing-primary-soft);
}

.landing-workflow-step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: 12px;
  border-radius: 14px;
  color: #fff;
  background: linear-gradient(145deg, var(--landing-primary), var(--landing-primary-light));
  box-shadow: 0 8px 20px rgba(22, 100, 255, 0.28);
}

.landing-workflow-step-title {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--landing-text);
  line-height: 1.35;
}

.landing-workflow-step-desc {
  margin: 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--landing-text-secondary);
}

/* Highlight feature grid */
.landing-highlight-grid {
  display: grid;
  gap: 16px;
}

@media (min-width: 640px) {
  .landing-highlight-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .landing-highlight-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.landing-highlight-card {
  position: relative;
  padding: 24px 20px 22px;
  border-radius: var(--landing-radius-lg);
  background: #fff;
  border: 1px solid rgba(22, 100, 255, 0.1);
  box-shadow: 0 4px 20px rgba(22, 100, 255, 0.06);
  overflow: hidden;
  transition: border-color 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease;
}

.landing-highlight-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--landing-primary), var(--landing-primary-light));
  opacity: 0.85;
}

.landing-highlight-card:hover {
  border-color: rgba(22, 100, 255, 0.28);
  box-shadow: 0 16px 40px rgba(22, 100, 255, 0.12);
  transform: translateY(-4px);
}

.landing-highlight-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.landing-highlight-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(145deg, var(--landing-primary), var(--landing-primary-light));
  box-shadow: 0 6px 16px rgba(22, 100, 255, 0.25);
}

.landing-highlight-tag {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  color: var(--landing-primary);
  background: var(--landing-primary-soft);
  border: 1px solid rgba(22, 100, 255, 0.15);
}

.landing-highlight-title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--landing-text);
  line-height: 1.35;
}

.landing-highlight-desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--landing-text-secondary);
}

/* Use case scenarios */
.landing-scenario-grid {
  display: grid;
  gap: 16px;
}

@media (min-width: 768px) {
  .landing-scenario-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.landing-scenario-card {
  padding: 24px 22px;
  border-radius: var(--landing-radius-lg);
  background: #fff;
  border: 1px solid rgba(22, 100, 255, 0.1);
  box-shadow: 0 4px 20px rgba(22, 100, 255, 0.05);
  transition: box-shadow 0.22s ease, transform 0.22s ease;
}

.landing-scenario-card:hover {
  box-shadow: 0 12px 32px rgba(22, 100, 255, 0.1);
  transform: translateY(-3px);
}

.landing-scenario-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: 14px;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(145deg, var(--landing-primary), var(--landing-primary-light));
  box-shadow: 0 6px 18px rgba(22, 100, 255, 0.28);
}

.landing-scenario-title {
  margin: 0 0 12px;
  font-size: 16px;
  font-weight: 600;
  color: var(--landing-text);
}

.landing-scenario-pain,
.landing-scenario-solution {
  margin: 0 0 8px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--landing-text-secondary);
}

.landing-scenario-solution {
  margin-bottom: 0;
}

.landing-scenario-pain strong,
.landing-scenario-solution strong {
  color: var(--landing-text);
  font-weight: 600;
}

/* ── Buttons ── */
.landing-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 11px 22px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.landing-btn:active {
  transform: scale(0.98);
}

.landing-btn--primary {
  background: linear-gradient(135deg, var(--landing-primary) 0%, #0052d9 100%);
  color: #fff;
  box-shadow: 0 8px 24px rgba(22, 100, 255, 0.35);
}

.landing-btn--primary:hover {
  background: linear-gradient(135deg, var(--landing-primary-hover) 0%, #0047c2 100%);
  color: #fff;
  box-shadow: 0 10px 28px rgba(22, 100, 255, 0.42);
  transform: translateY(-1px);
}

.landing-btn--secondary {
  background: rgba(255, 255, 255, 0.9);
  color: var(--landing-text);
  border-color: rgba(22, 100, 255, 0.2);
  box-shadow: 0 2px 10px rgba(22, 100, 255, 0.06);
}

.landing-btn--secondary:hover {
  border-color: var(--landing-primary);
  color: var(--landing-primary);
  background: #fff;
  box-shadow: 0 4px 16px rgba(22, 100, 255, 0.1);
}

.landing-btn--light {
  background: #fff;
  color: var(--landing-primary);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
}

.landing-btn--light:hover {
  background: #f2f3f5;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.landing-btn--outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}

.landing-btn--outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

.landing-btn--lg {
  padding: 13px 28px;
  font-size: 16px;
}

/* ── Scene strip ── */
.landing-scenes {
  border-block: 1px solid rgba(22, 100, 255, 0.12);
  background: linear-gradient(90deg, #eef4ff 0%, #ffffff 35%, #eef4ff 70%, #ffffff 100%);
}

.landing-scenes-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-block: 24px;
}

@media (min-width: 768px) {
  .landing-scenes-inner {
    flex-direction: row;
    align-items: center;
    gap: 24px;
  }
}

.landing-scenes-label {
  margin: 0;
  flex-shrink: 0;
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--landing-primary), var(--landing-primary-light));
  box-shadow: 0 4px 12px rgba(22, 100, 255, 0.25);
}

.landing-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.landing-pill {
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--landing-text-secondary);
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(22, 100, 255, 0.15);
  box-shadow: 0 2px 8px rgba(22, 100, 255, 0.05);
  transition: border-color 0.15s ease, color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.landing-pill:hover {
  border-color: rgba(22, 100, 255, 0.4);
  color: var(--landing-primary);
  background: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(22, 100, 255, 0.12);
}

/* ── Prose ── */
.landing-prose {
  max-width: 760px;
}

.landing-prose p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--landing-text-secondary);
}

/* ── Capability accordion ── */
.landing-cap-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.landing-cap-item {
  border: 1px solid var(--landing-border);
  border-radius: var(--landing-radius-lg);
  background: var(--landing-surface);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.landing-cap-item:hover {
  border-color: rgba(22, 100, 255, 0.2);
}

.landing-cap-item[open] {
  border-color: rgba(22, 100, 255, 0.35);
  box-shadow: 0 8px 28px rgba(22, 100, 255, 0.06);
}

.landing-cap-summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.landing-cap-summary::-webkit-details-marker {
  display: none;
}

.landing-cap-summary::after {
  content: '';
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  margin-left: auto;
  border-right: 2px solid var(--landing-text-muted);
  border-bottom: 2px solid var(--landing-text-muted);
  transform: rotate(45deg);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.landing-cap-item[open] > .landing-cap-summary::after {
  transform: rotate(225deg);
  border-color: var(--landing-primary);
}

.landing-cap-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(145deg, var(--landing-primary), var(--landing-primary-light));
  box-shadow: 0 4px 12px rgba(22, 100, 255, 0.22);
}

.landing-cap-head {
  flex: 1;
  min-width: 0;
  text-align: left;
}

.landing-cap-num {
  display: block;
  margin-bottom: 4px;
  font-size: 12px;
  font-weight: 600;
  color: var(--landing-text-muted);
}

.landing-cap-title {
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 600;
  color: var(--landing-text);
  line-height: 1.35;
}

.landing-cap-tagline {
  margin: 0;
  font-size: 13px;
  font-weight: 500;
  color: var(--landing-primary);
}

.landing-cap-body {
  padding: 0 20px 20px 74px;
  border-top: 1px solid var(--landing-border);
}

@media (max-width: 560px) {
  .landing-cap-body {
    padding-left: 20px;
  }
}

.landing-cap-p {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--landing-text-secondary);
}

/* ── Cooperation ── */
.landing-coop-grid {
  display: grid;
  gap: 16px;
}

@media (min-width: 768px) {
  .landing-coop-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.landing-coop-card {
  padding: 24px;
  border-radius: var(--landing-radius-lg);
  background: #fff;
  border: 1px solid rgba(22, 100, 255, 0.1);
  box-shadow: 0 4px 20px rgba(22, 100, 255, 0.06);
}

.landing-coop-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.landing-coop-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(145deg, var(--landing-primary), var(--landing-primary-light));
  box-shadow: 0 6px 16px rgba(22, 100, 255, 0.25);
}

.landing-coop-title {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--landing-text);
}

.landing-coop-list {
  margin: 0;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--landing-text-secondary);
}

.landing-coop-list li {
  margin-bottom: 8px;
}

.landing-coop-list li:last-child {
  margin-bottom: 0;
}

/* ── Advantages bento ── */
.landing-adv-grid {
  display: grid;
  gap: 14px;
  list-style: none;
  margin: 0;
  padding: 0;
}

@media (min-width: 640px) {
  .landing-adv-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .landing-adv-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.landing-adv-card {
  padding: 22px 20px;
  border-radius: var(--landing-radius);
  background: #fff;
  border: 1px solid rgba(22, 100, 255, 0.1);
  box-shadow: 0 4px 16px rgba(22, 100, 255, 0.05);
  transition: border-color 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease;
}

.landing-adv-card:hover {
  border-color: rgba(22, 100, 255, 0.28);
  box-shadow: 0 12px 32px rgba(22, 100, 255, 0.1);
  transform: translateY(-3px);
}

.landing-adv-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 12px;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(145deg, var(--landing-primary), var(--landing-primary-light));
  box-shadow: 0 6px 14px rgba(22, 100, 255, 0.22);
}

.landing-adv-title {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--landing-text);
}

.landing-adv-desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--landing-text-secondary);
}

/* ── Company intro ── */
.landing-company-copy--center {
  max-width: 760px;
  margin-inline: auto;
  margin-bottom: clamp(28px, 4vw, 40px);
}

.landing-company-brand {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.landing-company-logo {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  object-fit: cover;
  box-shadow: 0 8px 24px rgba(22, 100, 255, 0.15);
}

.landing-company-name {
  margin: 0 0 4px;
  font-size: 20px;
  font-weight: 700;
  color: var(--landing-text);
}

.landing-company-tagline {
  margin: 0;
  font-size: 14px;
  color: var(--landing-text-muted);
}

.landing-company-prose p + p {
  margin-top: 14px;
}

.landing-company-highlights {
  display: grid;
  gap: 14px;
  list-style: none;
  margin: 0;
  padding: 0;
}

@media (min-width: 768px) {
  .landing-company-highlights {
    grid-template-columns: repeat(3, 1fr);
  }
}

.landing-company-highlights > .landing-reveal {
  list-style: none;
}

.landing-company-highlight-card {
  height: 100%;
  padding: 22px 20px;
  border-radius: var(--landing-radius-lg);
  background: #fff;
  border: 1px solid rgba(22, 100, 255, 0.1);
  box-shadow: 0 4px 16px rgba(22, 100, 255, 0.05);
  transition: border-color 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease;
}

.landing-company-highlight-card:hover {
  border-color: rgba(22, 100, 255, 0.28);
  box-shadow: 0 12px 32px rgba(22, 100, 255, 0.1);
  transform: translateY(-3px);
}

.landing-company-highlight-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 12px;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(145deg, var(--landing-primary), var(--landing-primary-light));
  box-shadow: 0 6px 14px rgba(22, 100, 255, 0.22);
}

.landing-company-highlight-title {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--landing-text);
}

.landing-company-highlight-desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--landing-text-secondary);
}

/* ── Vision ── */
.landing-vision {
  padding-block: clamp(48px, 7vw, 64px);
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(22, 100, 255, 0.12), transparent 55%),
    linear-gradient(135deg, #e8f3ff 0%, #f0f7ff 50%, #e8f3ff 100%);
  border-block: 1px solid rgba(22, 100, 255, 0.15);
}

.landing-vision-inner {
  max-width: 720px;
  margin-inline: auto;
  text-align: center;
}

.landing-vision-title {
  margin: 0 0 12px;
  font-size: clamp(20px, 3vw, 24px);
  font-weight: 700;
  color: var(--landing-text);
}

.landing-vision-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--landing-text-secondary);
}

/* ── FAQ ── */
.landing-faq-panel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 760px;
  margin-inline: auto;
}

.landing-faq-item {
  margin: 0;
  border: 1px solid var(--landing-border);
  border-radius: var(--landing-radius);
  background: var(--landing-surface);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.landing-faq-item[open] {
  border-color: rgba(22, 100, 255, 0.35);
}

.landing-faq-summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--landing-text);
  user-select: none;
}

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

.landing-faq-summary::after {
  content: '';
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  margin-left: auto;
  border-right: 2px solid var(--landing-text-muted);
  border-bottom: 2px solid var(--landing-text-muted);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.landing-faq-item[open] > .landing-faq-summary::after {
  transform: rotate(225deg);
  border-color: var(--landing-primary);
}

.landing-faq-answer {
  padding: 0 18px 18px;
  border-top: 1px solid var(--landing-border);
}

.landing-faq-answer p {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--landing-text-secondary);
}

/* ── CTA band ── */
.landing-cta-band {
  position: relative;
  padding-block: clamp(56px, 8vw, 72px);
  overflow: hidden;
  background: linear-gradient(125deg, #0047c2 0%, var(--landing-primary) 45%, var(--landing-primary-light) 100%);
}

.landing-cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 90% 20%, rgba(255, 255, 255, 0.15), transparent 50%),
    radial-gradient(ellipse 50% 60% at 10% 80%, rgba(255, 255, 255, 0.08), transparent 45%);
  pointer-events: none;
}

.landing-cta-band-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 24px;
}

@media (min-width: 768px) {
  .landing-cta-band-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.landing-cta-band-title {
  margin: 0 0 8px;
  font-size: clamp(22px, 3vw, 26px);
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}

.landing-cta-band-lead {
  margin: 0;
  max-width: 480px;
  font-size: 15px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.88);
}

.landing-cta-band-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  flex-shrink: 0;
}

/* ── Footer ── */
.landing-page-foot {
  padding: 32px 24px 40px;
  text-align: center;
  background: var(--landing-surface);
  border-top: 1px solid var(--landing-border);
}

.landing-foot-inner {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.landing-foot-brand {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--landing-text);
}

.landing-foot-copy {
  margin: 0;
  font-size: 13px;
  color: var(--landing-text-muted);
}

.landing-foot-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 16px;
  margin: 4px 0 2px;
}

.landing-foot-links a {
  font-size: 13px;
  font-weight: 600;
  color: var(--landing-text-muted);
  text-decoration: none;
}

.landing-foot-links a:hover {
  color: var(--landing-primary);
}

.landing-foot-beian-link {
  font-size: 13px;
  color: var(--landing-text-muted);
  text-decoration: none;
}

.landing-foot-beian-link:hover {
  color: var(--landing-primary);
}

/* ── Scroll reveal ── */
.landing-reveal {
  opacity: 0;
  transition:
    opacity 0.65s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.65s cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: var(--reveal-delay, 0ms);
}

.landing-reveal--up {
  transform: translateY(28px);
}

.landing-reveal--left {
  transform: translateX(-32px);
}

.landing-reveal--right {
  transform: translateX(32px);
}

.landing-reveal--scale {
  transform: scale(0.92);
}

.landing-reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ── Hero entrance ── */
@media (prefers-reduced-motion: no-preference) {
  .landing-hero-enter > * {
    animation: landing-hero-in 0.7s cubic-bezier(0.22, 1, 0.36, 1) backwards;
  }

  .landing-hero-enter > *:nth-child(1) {
    animation-delay: 0.05s;
  }
  .landing-hero-enter > *:nth-child(2) {
    animation-delay: 0.12s;
  }
  .landing-hero-enter > *:nth-child(3) {
    animation-delay: 0.18s;
  }
  .landing-hero-enter > *:nth-child(4) {
    animation-delay: 0.24s;
  }
  .landing-hero-enter > *:nth-child(5) {
    animation-delay: 0.3s;
  }
  .landing-hero-enter > *:nth-child(6) {
    animation-delay: 0.36s;
  }

  .landing-hero-enter--late {
    animation: landing-hero-in 0.85s cubic-bezier(0.22, 1, 0.36, 1) 0.2s backwards;
  }

  .landing-hero-stat {
    animation: landing-stat-in 0.55s cubic-bezier(0.22, 1, 0.36, 1) backwards;
    animation-delay: calc(0.45s + var(--hero-stat-i, 0) * 0.08s);
  }

  .landing-hero-chip {
    animation: landing-chip-in 0.5s cubic-bezier(0.22, 1, 0.36, 1) backwards;
    animation-delay: calc(0.55s + var(--chip-i, 0) * 0.07s);
  }

  .landing-hero-orb--1 {
    animation: landing-orb-drift-a 14s ease-in-out infinite;
  }

  .landing-hero-orb--2 {
    animation: landing-orb-drift-b 18s ease-in-out infinite;
  }

  .landing-hero-orb--3 {
    animation: landing-orb-drift-c 12s ease-in-out infinite;
  }

  .landing-hero-badge {
    animation: landing-badge-shimmer 3s ease-in-out infinite;
  }

  .landing-pill--pop {
    animation: landing-pill-pop 0.45s cubic-bezier(0.22, 1, 0.36, 1) backwards;
    animation-delay: calc(var(--pill-i, 0) * 0.06s);
  }
}

@keyframes landing-hero-in {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes landing-stat-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes landing-chip-in {
  from {
    opacity: 0;
    transform: scale(0.85);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes landing-orb-drift-a {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(-16px, 12px);
  }
}

@keyframes landing-orb-drift-b {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(12px, -10px);
  }
}

@keyframes landing-orb-drift-c {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(-8px, 8px) scale(1.08);
  }
}

@keyframes landing-badge-shimmer {
  0%,
  100% {
    box-shadow: 0 2px 12px rgba(22, 100, 255, 0.1);
  }
  50% {
    box-shadow: 0 4px 20px rgba(22, 100, 255, 0.22);
  }
}

@keyframes landing-pill-pop {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ── Video tutorial ── */
.landing-tutorial-panel {
  max-width: var(--landing-max);
  margin: 0 auto;
  background: var(--landing-surface);
  border: 1px solid var(--landing-border);
  border-radius: var(--landing-radius-lg);
  box-shadow:
    0 12px 40px rgba(22, 100, 255, 0.08),
    0 2px 8px rgba(29, 33, 41, 0.04);
  overflow: hidden;
}

.landing-tutorial-tab-bar {
  padding: clamp(14px, 2.5vw, 20px) clamp(14px, 2.5vw, 20px) 0;
  background:
    radial-gradient(ellipse 80% 120% at 50% -20%, rgba(22, 100, 255, 0.1), transparent 70%),
    linear-gradient(180deg, #f7faff 0%, #fff 100%);
  border-bottom: 1px solid var(--landing-border);
}

.landing-tutorial-tab-scroll {
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: rgba(22, 100, 255, 0.35) transparent;
  padding-bottom: 2px;
}

.landing-tutorial-tab-scroll::-webkit-scrollbar {
  height: 4px;
}

.landing-tutorial-tab-scroll::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(22, 100, 255, 0.28);
}

.landing-tutorial-tab-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.landing-tutorial-tab-track {
  display: flex;
  flex-wrap: nowrap;
  align-items: stretch;
  gap: 6px;
  width: 100%;
  min-width: max-content;
  padding: 5px;
  border-radius: 12px;
  background: rgba(22, 100, 255, 0.05);
  border: 1px solid rgba(22, 100, 255, 0.1);
  box-shadow: inset 0 1px 2px rgba(22, 100, 255, 0.05);
}

.landing-tutorial-tab {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  gap: 7px;
  flex: 1 1 0;
  min-width: clamp(96px, calc((100% - 30px) / 5), 200px);
  padding: 9px 10px;
  border: 1px solid transparent;
  border-radius: 9px;
  background: transparent;
  cursor: pointer;
  text-align: left;
  color: var(--landing-text-secondary);
  white-space: nowrap;
  transition:
    background 0.22s cubic-bezier(0.22, 1, 0.36, 1),
    border-color 0.22s ease,
    box-shadow 0.22s ease,
    color 0.2s ease;
}

.landing-tutorial-tab:hover:not(.landing-tutorial-tab--active) {
  background: rgba(255, 255, 255, 0.78);
  border-color: rgba(22, 100, 255, 0.14);
  color: var(--landing-text);
}

.landing-tutorial-tab--active {
  background: #fff;
  border-color: rgba(22, 100, 255, 0.2);
  color: var(--landing-primary);
  box-shadow:
    0 4px 16px rgba(22, 100, 255, 0.14),
    0 1px 2px rgba(29, 33, 41, 0.05);
}

.landing-tutorial-tab-index {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 7px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--landing-primary);
  background: rgba(22, 100, 255, 0.1);
  transition: background 0.22s ease, color 0.22s ease, box-shadow 0.22s ease;
}

.landing-tutorial-tab--active .landing-tutorial-tab-index {
  color: #fff;
  background: linear-gradient(135deg, var(--landing-primary), var(--landing-primary-light));
  box-shadow: 0 3px 10px rgba(22, 100, 255, 0.26);
}

.landing-tutorial-tab-label {
  flex: 1;
  min-width: 0;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.3;
  color: inherit;
  overflow: hidden;
  text-overflow: ellipsis;
}

.landing-tutorial-tab--active .landing-tutorial-tab-label {
  color: var(--landing-text);
}

.landing-tutorial-tab:focus-visible {
  outline: 2px solid var(--landing-primary);
  outline-offset: 2px;
}

@media (min-width: 768px) {
  .landing-tutorial-tab {
    padding: 10px 12px;
    gap: 8px;
  }

  .landing-tutorial-tab-index {
    width: 26px;
    height: 26px;
    font-size: 10px;
  }

  .landing-tutorial-tab-label {
    font-size: 13px;
  }
}

.landing-tutorial-player-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #0d1117;
  overflow: hidden;
}

.landing-tutorial-player,
.landing-tutorial-player-fallback {
  display: block;
  width: 100%;
  height: 100%;
  background: #0d1117;
}

.landing-tutorial-player .d-player-wrap {
  width: 100% !important;
  height: 100% !important;
}

.landing-tutorial-cover {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 24px;
  border: 0;
  cursor: pointer;
  color: #fff;
  background:
    radial-gradient(ellipse 70% 55% at 50% 42%, rgba(22, 100, 255, 0.32), transparent 68%),
    linear-gradient(180deg, #1a2332 0%, #0d1117 100%);
}

.landing-tutorial-cover:disabled {
  cursor: progress;
}

.landing-tutorial-cover:focus-visible {
  outline: 2px solid var(--landing-primary-light);
  outline-offset: -4px;
}

.landing-tutorial-cover-play {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(135deg, var(--landing-primary), var(--landing-primary-light));
  box-shadow: 0 10px 28px rgba(22, 100, 255, 0.38);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.landing-tutorial-cover-play svg {
  width: 28px;
  height: 28px;
  margin-left: 3px;
}

.landing-tutorial-cover:hover:not(:disabled) .landing-tutorial-cover-play {
  transform: scale(1.06);
  box-shadow: 0 12px 32px rgba(22, 100, 255, 0.48);
}

.landing-tutorial-cover-label {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
}

.landing-tutorial-cover-hint {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.72);
}

/* ── Split layouts ── */
.landing-features-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 320px);
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

@media (max-width: 960px) {
  .landing-features-layout {
    grid-template-columns: 1fr;
  }

  .landing-features-layout > .landing-reveal:last-child {
    justify-self: center;
    max-width: 320px;
  }
}

.landing-position-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 380px);
  gap: clamp(28px, 5vw, 56px);
  align-items: center;
}

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

  .landing-position-layout > .landing-reveal:last-child {
    justify-self: center;
    max-width: 360px;
  }
}

/* ── Scenes animated band ── */
.landing-scenes--animated {
  position: relative;
  overflow: hidden;
}

.landing-scenes-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(22, 100, 255, 0.04) 25%,
    rgba(22, 100, 255, 0.08) 50%,
    rgba(22, 100, 255, 0.04) 75%,
    transparent 100%
  );
  background-size: 200% 100%;
  animation: landing-scenes-shine 8s ease-in-out infinite;
  pointer-events: none;
}

@keyframes landing-scenes-shine {
  0%,
  100% {
    background-position: 100% 0;
  }
  50% {
    background-position: 0% 0;
  }
}


/* ── Workflow step as reveal li ── */
.landing-workflow-steps > .landing-reveal {
  list-style: none;
}

.landing-adv-grid > .landing-reveal {
  list-style: none;
}

.landing-adv-grid > .landing-reveal > .landing-adv-card {
  height: 100%;
}

.landing-highlight-icon,
.landing-workflow-step-icon,
.landing-scenario-icon {
  transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1);
}

.landing-highlight-card:hover .landing-highlight-icon,
.landing-workflow-step:hover .landing-workflow-step-icon,
.landing-scenario-card:hover .landing-scenario-icon {
  transform: scale(1.08) rotate(-3deg);
}

.landing-highlight-card {
  height: 100%;
}

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

  .landing-reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .landing-hero-enter > *,
  .landing-hero-enter--late,
  .landing-hero-stat,
  .landing-hero-chip,
  .landing-hero-orb,
  .landing-scenes-bg,
  .landing-pill--pop {
    animation: none !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .landing-btn--primary:hover,
  .landing-btn--light:hover {
    transform: none;
  }

  .landing-preview-frame,
  .landing-hero-visual-cta:hover,
  .landing-workflow-step:hover,
  .landing-highlight-card:hover,
  .landing-scenario-card:hover,
  .landing-adv-card:hover,
  .landing-company-highlight-card:hover,
  .landing-pill:hover,
  .landing-preview-item:hover {
    animation: none !important;
    transform: none !important;
  }

  .landing-tutorial-tab,
  .landing-tutorial-tab--active {
    transition: none !important;
  }
}