/* ==========================================================================
   Kayak Production Homepage Styling & Craft Layer (Linear 1:1 Polish)
   ========================================================================== */

@font-face {
  font-family: "Satoshi";
  src: url('../assets/fonts/Satoshi-Variable.woff2') format('woff2');
  font-style: normal;
  font-weight: 300 900;
  font-display: swap;
}

:root {
  --font-regular: "Inter Variable", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", sans-serif;
  --font-monospace: "SF Mono", "JetBrains Mono", Menlo, Monaco, Consolas, monospace;
  --color-bg-primary: #08090a;
  --color-text-primary: #f7f8f8;
  --color-text-secondary: #9ba1a6;
  --color-text-muted: #8a8f98;
  --color-border-subtle: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.18);
}

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-family: var(--font-regular);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

[hidden] {
  display: none !important;
}

section[id], #benefits, #integrations, #app-window, #download {
  scroll-margin-top: 88px;
}

.kayak-skip-link {
  position: fixed;
  top: 12px;
  left: 16px;
  z-index: 2000;
  padding: 10px 18px;
  background: #f7f8f8;
  color: #08090a;
  font-size: 13px;
  font-weight: 600;
  border-radius: 8px;
  transform: translateY(-150%);
  transition: transform 0.2s ease;
}
.kayak-skip-link:focus {
  transform: translateY(0);
}

/* Navigation Bar Polish */
.TZTsQG_header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(8, 9, 10, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border-subtle);
}
.TZTsQG_rightSideWrapper {
  width: auto;
  max-width: none;
  margin-left: auto;
  gap: 16px;
}
.TZTsQG_anchor[data-nav-menu] {
  gap: 6px;
  cursor: pointer;
}
.TZTsQG_anchor[aria-expanded="true"] {
  color: var(--color-text-primary) !important;
  background: rgba(255, 255, 255, 0.06);
}

/* Navigation Items & Hover Dropdown */
.TZTsQG_navItems {
  align-items: center;
  gap: 6px;
}
.TZTsQG_anchor {
  font-size: 13.5px !important;
  color: #8a8f98 !important;
  transition: color 0.15s ease, background 0.15s ease !important;
  padding: 6px 10px !important;
  border-radius: 6px !important;
  text-decoration: none !important;
}
.TZTsQG_anchor:hover {
  color: #f7f8f8 !important;
  background: rgba(255, 255, 255, 0.04);
}

.kayak-nav-dropdown-item {
  position: relative;
  display: flex;
  align-items: center;
}
.kayak-dropdown-trigger {
  cursor: pointer;
}
.kayak-nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  width: 440px;
  padding: 8px;
  background: rgba(15, 16, 18, 0.96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6), 0 1px 0 rgba(255, 255, 255, 0.08) inset;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  z-index: 1002;
  visibility: hidden;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.16s ease, transform 0.16s ease, visibility 0.16s ease;
  pointer-events: none;
}
.kayak-nav-dropdown-menu::before {
  content: '';
  position: absolute;
  top: -12px;
  left: 0;
  right: 0;
  height: 12px;
}
.kayak-nav-dropdown-item:hover .kayak-nav-dropdown-menu,
.kayak-nav-dropdown-item:focus-within .kayak-nav-dropdown-menu,
.kayak-nav-dropdown-item.is-open .kayak-nav-dropdown-menu {
  visibility: visible;
  opacity: 1;
  transform: translateY(6px);
  pointer-events: auto;
}
.kayak-nav-dropdown-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.kayak-dropdown-link {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 10px 12px;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.12s ease;
}
.kayak-dropdown-link:hover {
  background: rgba(255, 255, 255, 0.06);
}
.kayak-dropdown-title {
  font-size: 13.5px;
  font-weight: 500;
  color: #f7f8f8;
  line-height: 1.35;
}
.kayak-dropdown-desc {
  font-size: 12px;
  color: #8a8f98;
  line-height: 1.45;
}
.kayak-dropdown-link:hover .kayak-dropdown-desc {
  color: #b0b4ba;
}

/* Header Action CTA Button (白底黑字) */
.kayak-header-cta-btn {
  display: inline-flex;
  align-items: center;
  background: #ffffff;
  color: #08090a;
  border: 1px solid #ffffff;
  padding: 5px 14px;
  border-radius: 9999px;
  font-size: 12.5px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s ease;
  white-space: nowrap;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}
.kayak-header-cta-btn:hover {
  background: #e6e8ec;
  border-color: #e6e8ec;
  color: #08090a;
  transform: translateY(-1px);
}

/* Mobile Drawer Fallback */
#navigation-panel {
  position: fixed;
  top: calc(var(--header-height) + 8px);
  right: max(24px, var(--page-padding-right));
  z-index: 1001;
  width: 520px;
  padding: 12px;
  border: 1px solid var(--color-border-subtle);
  border-radius: 12px;
  background: #101112;
}
.kayak-nav-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.kayak-nav-group {
  display: flex;
  flex-direction: column;
}
.kayak-nav-group a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px;
  border-radius: 8px;
  color: var(--color-text-primary);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
}
.kayak-nav-group a:hover {
  background: rgba(255, 255, 255, 0.06);
}
.kayak-nav-group small, .kayak-nav-group-heading {
  color: var(--color-text-secondary);
  font-size: 13px;
  line-height: 1.5;
}
.kayak-nav-group-heading {
  padding: 8px 12px;
}
.kayak-nav-group a:focus-visible, [data-nav-menu]:focus-visible {
  outline: 2px solid var(--color-text-primary);
  outline-offset: 2px;
}

.TZTsQG_logoLink {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.kayak-brand-name {
  font-family: "Satoshi", sans-serif;
  font-size: 17px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #f5f5f7;
}
.TZTsQG_logoLink > img, .kayak-footer-brand > img {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  border-radius: 6px;
  object-fit: cover;
}

/* Hero Section Typography & Rhythm */
.QI8oKG_container {
  --kayak-hero-leading-space: 90px;
  position: relative;
  isolation: isolate;
  padding-top: 24px;
}
@media (max-width: 1024px) {
  .QI8oKG_container { --kayak-hero-leading-space: 46px; }
}
@media (max-width: 640px) {
  .QI8oKG_container { --kayak-hero-leading-space: 60px; }
}
.kayak-hero-video {
  position: absolute;
  z-index: -1;
  top: calc(-1 * var(--kayak-hero-leading-space) - 12px);
  right: -24px;
  bottom: -40px;
  width: 60%;
  overflow: hidden;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 45%), linear-gradient(to bottom, transparent, #000 2%), url("../assets/video/hero-edge-mask.svg?v=2");
  mask-image: linear-gradient(to right, transparent, #000 45%), linear-gradient(to bottom, transparent, #000 2%), url("../assets/video/hero-edge-mask.svg?v=2");
  -webkit-mask-composite: source-in;
  mask-composite: intersect;
  -webkit-mask-size: 100% 100%;
  mask-size: 100% 100%;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  mask-mode: alpha;
}
.kayak-hero-video video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 60% center;
  filter: grayscale(1);
}
.kayak-hero-video::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.24);
}
.kayak-hero-brand-scene {
  display: none;
  position: absolute;
  top: 50%;
  right: clamp(32px, 4vw, 64px);
  width: 272px;
  height: 176px;
  transform: translateY(-50%);
  pointer-events: none;
}
.kayak-hero-mark {
  display: block;
  width: 144px;
  height: auto;
  margin: 0 auto;
}
.kayak-hero-brand-words {
  position: absolute;
  inset: auto 0 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
}
.kayak-hero-word {
  color: var(--word-rest, #9c9c9c);
  font-size: 14px;
  line-height: 1.5;
  font-weight: 400;
  white-space: nowrap;
}
.kayak-hero-word-link {
  flex: 0 0 20px;
  stroke: #666;
  stroke-width: 0.85;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.kayak-hero-word-link path {
  stroke-dasharray: 1;
  stroke-dashoffset: 0;
}
.kayak-hero-mark-body,
.kayak-hero-mark-bow {
  fill: none;
  stroke: #aaa;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 0;
}
@media (min-width: 1100px) {
  .kayak-hero-brand-scene {
    display: block;
  }
}
@media (prefers-reduced-motion: no-preference) {
  html.kayak-motion-ready .kayak-hero-mark-body {
    animation: kayak-mark-draw 1.8s cubic-bezier(0.65, 0, 0.35, 1) 0.4s both;
  }
  html.kayak-motion-ready .kayak-hero-mark-bow {
    animation: kayak-mark-draw 1.2s cubic-bezier(0.65, 0, 0.35, 1) 0.8s both;
  }
  html.kayak-motion-ready .kayak-hero-word {
    animation: kayak-word-reveal 0.9s cubic-bezier(0.16, 1, 0.3, 1) var(--word-delay) both;
  }
  html.kayak-motion-ready .kayak-hero-word-link path {
    animation: kayak-word-connect 0.65s ease var(--line-delay) both;
  }
}
@keyframes kayak-mark-draw {
  from { stroke-dashoffset: 1; }
  to { stroke-dashoffset: 0; }
}
@keyframes kayak-word-reveal {
  0% { opacity: 0; clip-path: inset(100% 0 0); transform: translateY(6px); color: #f7f7f7; }
  55% { opacity: 1; clip-path: inset(0); transform: translateY(0); color: #f7f7f7; }
  100% { opacity: 1; clip-path: inset(0); transform: translateY(0); color: var(--word-rest, #9c9c9c); }
}
@keyframes kayak-word-connect {
  from { stroke-dashoffset: 1; }
  to { stroke-dashoffset: 0; }
}

/* Force override of minified 360px restriction */
.QI8oKG_title {
  max-width: 920px !important;
  margin: 0 !important;
}
.kayak-hero-headline {
  font-size: clamp(26px, 3.2vw, 42px) !important;
  line-height: 1.2 !important;
  letter-spacing: -0.025em !important;
  font-weight: 600 !important;
  color: #f7f8f8 !important;
  text-wrap: balance !important;
}

.QI8oKG_descriptionContainer {
  margin-top: 24px !important;
}
.QI8oKG_description {
  max-width: 580px !important;
  font-size: 14.5px !important;
  line-height: 1.65 !important;
  color: #9ba1a6 !important;
  text-wrap: pretty !important;
}

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

.kayak-hero-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  color: #08090a;
  padding: 9px 20px;
  border-radius: 9999px;
  font-size: 13.5px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.15s ease;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}
.kayak-hero-btn-primary:hover {
  background: #e6e8ec;
  transform: translateY(-1px);
}

.kayak-hero-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  color: #f7f8f8;
  border: 1px solid var(--color-border-subtle);
  padding: 9px 18px;
  border-radius: 9999px;
  font-size: 13.5px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.15s ease;
}
.kayak-hero-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-border-hover);
  transform: translateY(-1px);
}

/* ==========================================================================
   App Showcase Mockup (INTACT - PRESERVED EXACTLY AS REQUIRED)
   ========================================================================== */
.kayak-hero-shell > .WS84WW_background,
.kayak-hero-shell > .WS84WW_shadows,
.kayak-hero-shell > .WS84WW_shade {
  pointer-events: none;
}
.kayak-app-canvas {
  position: relative;
  width: var(--width);
  height: 665px;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid #ffffff14;
  border-radius: var(--app-radius);
  background: #181818;
}
.kayak-app-preview {
  display: block;
  position: absolute;
  inset: 0 auto auto 0;
  width: 1920px;
  height: 967px;
  border: 0;
  background: #181818;
  transform-origin: top left;
}

/* ==========================================================================
   Toolstrip Integrations Section (#integrations)
   ========================================================================== */
.kayak-tool-caption {
  display: flex;
  align-items: center;
  gap: 8px;
}
.kayak-tool-caption svg {
  flex-shrink: 0;
}
.kayak-tool-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 24px;
}
.kayak-tool-wordmark {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #f7f8f8;
  font-size: 18.5px;
  font-weight: 600;
  white-space: nowrap;
  letter-spacing: -0.015em;
  opacity: 0.92;
  transition: opacity 0.2s, color 0.2s;
}
.kayak-tool-wordmark:hover {
  opacity: 1;
  color: #ffffff;
}
.kayak-tool-wordmark img {
  width: 22px;
  height: 22px;
  object-fit: contain;
  flex-shrink: 0;
  filter: invert(1);
  opacity: 0.92;
  transition: opacity 0.2s, filter 0.2s;
}
.kayak-tool-wordmark img.kayak-tool-icon-native {
  filter: none;
}
.kayak-tool-wordmark:hover img {
  opacity: 1;
}

.igJSCV {
  color: #8a8f98 !important;
}

@media (max-width: 1024px) {
  .kayak-tool-strip {
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
  }
  .kayak-tool-wordmark {
    flex: 0 0 28%;
    justify-content: center;
    font-size: 16px;
  }
}
@media (max-width: 640px) {
  .kayak-tool-strip {
    row-gap: 24px;
    column-gap: 16px;
  }
  .kayak-tool-wordmark {
    font-size: 14px;
    gap: 8px;
  }
  .kayak-tool-wordmark img {
    width: 18px;
    height: 18px;
  }
}

/* ==========================================================================
   Section: Architecture Manifesto Heading (#benefits)
   Centered, Unified Typography matching site scale
   ========================================================================== */
.kayak-benefits-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
.kayak-benefits-title {
  margin: 0;
  font-size: clamp(20px, 2.2vw, 27px) !important;
  line-height: 1.35 !important;
  letter-spacing: -0.02em !important;
  font-weight: 600 !important;
  color: #f7f8f8 !important;
  text-wrap: balance !important;
}
.kayak-benefits-desc {
  margin: 14px auto 0 !important;
  max-width: 560px;
  font-size: 14.5px !important;
  line-height: 1.65 !important;
  color: #8a8f98 !important;
  text-wrap: pretty !important;
}
@media (max-width: 640px) {
  .kayak-benefits-title {
    font-size: 20px !important;
    line-height: 1.35 !important;
  }
  .kayak-benefits-desc {
    font-size: 14px !important;
    line-height: 1.6 !important;
    margin-top: 12px !important;
    text-wrap: balance !important;
  }
}

/* ==========================================================================
   Benefit Cards (Fig 0.1, 0.2, 0.3)
   ========================================================================== */
.GJ9TEa_carouselCard, .GJ9TEa_benefit {
  padding: 20px !important;
  border-radius: 12px !important;
}
.GJ9TEa_carouselCard {
  position: relative;
}
.GJ9TEa_carouselCard .GJ9TEa_figure {
  top: 16px;
  left: 20px;
}
.GJ9TEa_figure {
  font-family: var(--font-monospace) !important;
  font-size: 11px !important;
  font-weight: 600 !important;
  letter-spacing: 0.06em !important;
  color: #8a8f98 !important;
  opacity: 1 !important;
  text-transform: uppercase !important;
}
@media (prefers-reduced-motion: reduce) {
  .GJ9TEa_carouselIllustration ._3fVNxW_gridLoader circle,
  .GJ9TEa_illustration ._3fVNxW_gridLoader circle {
    animation: none;
  }
}
.kayak-card-title {
  font-size: 15px !important;
  font-weight: 600 !important;
  line-height: 1.35 !important;
  letter-spacing: -0.015em !important;
  color: #f7f8f8 !important;
}
.kayak-card-body {
  font-size: 13px !important;
  line-height: 1.55 !important;
  color: var(--color-text-secondary) !important;
  margin: 0 !important;
}

/* ==========================================================================
   Alternating Feature Story Rows
   ========================================================================== */
.kayak-feature-story {
  max-width: var(--homepage-max-width, 1440px);
  margin: 0 auto;
  padding: 64px 48px 96px;
  display: grid;
  gap: 96px;
}
.kayak-feature-row {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  grid-template-areas: "media copy";
  align-items: center;
  gap: 64px;
}
.kayak-feature-row-reverse {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  grid-template-areas: "copy media";
}
.kayak-feature-copy {
  grid-area: copy;
  min-width: 0;
}
.kayak-feature-eyebrow {
  display: inline-block;
  font-size: 11px;
  font-family: var(--font-monospace);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #8a8f98;
  margin-bottom: 12px;
}
.kayak-feature-copy h2 {
  margin: 0;
  font-size: clamp(20px, 1.85vw, 26px);
  line-height: 1.35;
  letter-spacing: -0.02em;
  font-weight: 600;
  color: #f7f8f8;
  text-wrap: balance;
}
.kayak-feature-copy p {
  margin: 14px 0 0;
  max-width: 30em;
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-text-secondary);
  text-wrap: pretty;
}

.kayak-feature-media {
  grid-area: media;
  min-width: 0;
  margin: 0;
  aspect-ratio: 1586 / 992;
  overflow: hidden;
  background: transparent;
}
.kayak-feature-media > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 14%, #000 86%, transparent);
  mask-image: linear-gradient(to right, transparent, #000 14%, #000 86%, transparent);
}

/* ==========================================================================
   Footer (Matching Reference Multi-Column Layout)
   ========================================================================== */
.kayak-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: #08090a;
  padding: 56px 0 40px;
}
.kayak-footer-inner {
  width: 100%;
  max-width: var(--homepage-max-width);
  padding-left: calc(var(--homepage-padding-inset) + var(--homepage-outer-padding) - 1px);
  padding-right: calc(var(--homepage-padding-inset) + var(--homepage-outer-padding) - 1px);
  margin-inline: auto;
  box-sizing: border-box;
}
.kayak-footer-main {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 64px;
  padding-bottom: 40px;
}
.kayak-footer-brand-col {
  max-width: 340px;
}
.kayak-footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  margin-bottom: 12px;
}
.kayak-footer-brand img {
  width: 20px;
  height: 20px;
  object-fit: contain;
}
.kayak-footer-brand-name {
  font-family: "Satoshi", -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #f7f8f8;
}
.kayak-footer-tagline {
  font-size: 13px;
  line-height: 1.6;
  color: #8a8f98;
  margin: 0;
}
.kayak-footer-nav-cols {
  display: flex;
  gap: 80px;
}
.kayak-footer-col {
  display: flex;
  flex-direction: column;
}
.kayak-footer-heading {
  font-size: 13px;
  font-weight: 600;
  color: #f7f8f8;
  margin: 0 0 14px 0;
  letter-spacing: -0.01em;
}
.kayak-footer-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.kayak-footer-list li a {
  font-size: 12.5px;
  color: #8a8f98;
  text-decoration: none;
  transition: color 0.15s ease;
  white-space: nowrap;
}
.kayak-footer-list li a:hover {
  color: #f7f8f8;
}
.kayak-footer-list .k-item-name {
  color: #d0d6e0;
  transition: color 0.15s ease;
}
.kayak-footer-list li a:hover .k-item-name {
  color: #ffffff;
}
.kayak-footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
}
.kayak-footer-copy {
  font-size: 12px;
  color: #8a8f98;
  line-height: 1.5;
}

/* Responsive Overrides */
@media (max-width: 1024px) {
  .kayak-tool-strip {
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
  }
  .kayak-tool-wordmark {
    flex: 0 0 28%;
    justify-content: center;
    font-size: 14px;
  }
  .kayak-feature-story {
    padding-inline: 32px;
    gap: 96px;
  }
  .kayak-feature-row {
    gap: 48px;
  }
}

@media (max-width: 900px) {
  .kayak-feature-story {
    padding: 48px 24px 80px;
    gap: 80px;
  }
  .kayak-feature-row, .kayak-feature-row-reverse {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "copy" "media";
    gap: 28px;
  }
  .kayak-feature-copy h2 {
    font-size: clamp(26px, 4vw, 30px);
  }
  .kayak-feature-media > img {
    -webkit-mask-image: linear-gradient(to right, transparent, #000 10%, #000 90%, transparent);
    mask-image: linear-gradient(to right, transparent, #000 10%, #000 90%, transparent);
  }
}

@media (max-width: 768px) {
  .QI8oKG_container {
    padding-top: 12px;
  }
  .kayak-hero-video {
    right: -16px;
    bottom: auto;
    width: 85%;
    height: calc(var(--kayak-hero-leading-space) + 132px);
  }
  .TZTsQG_navItems {
    display: none;
  }
  #navigation-panel.kayak-mobile-navigation {
    top: calc(var(--header-height) + 8px);
    right: 16px;
    left: 16px;
    width: auto;
    max-height: calc(100dvh - var(--header-height) - 24px);
    overflow-y: auto;
  }
  .kayak-mobile-navigation .kayak-nav-groups {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }
  .kayak-hero-headline {
    font-size: clamp(23px, 7.4vw, 30px) !important;
  }
  .kayak-brand-name {
    font-size: 16px;
  }
  .kayak-app-canvas {
    transform: scale(0.5);
    transform-origin: top left;
  }
  .kayak-footer {
    padding: 48px 0 36px;
  }
  .kayak-footer-main {
    flex-direction: column;
    gap: 40px;
    padding-bottom: 36px;
  }
  .kayak-footer-brand-col {
    max-width: 100%;
  }
  .kayak-footer-nav-cols {
    flex-wrap: wrap;
    gap: 40px;
  }
}

/* ==========================================================================
   Page Preloader & Motion Engine (Step 165)
   ========================================================================== */

/* Top Scroll Progress Line (Refined Minimalist Grey) */
.kayak-scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 2px;
  z-index: 999999;
  background: linear-gradient(90deg, #484b52 0%, #8a8f98 50%, #dcdfe4 100%);
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.25);
  pointer-events: none;
  transition: width 0.08s linear;
}

/* Page Preloader (Minimalist Kayak Brand Entrance) */
.kayak-page-loader {
  position: fixed;
  inset: 0;
  z-index: 999998;
  background: #08090a;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: all;
  transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.4s;
}

.kayak-page-loader.is-loaded {
  opacity: 0;
  transform: scale(1.02);
  visibility: hidden;
  pointer-events: none;
}

.kayak-loader-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.kayak-loader-icon-wrap {
  width: auto;
  height: auto;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  display: flex;
  align-items: center;
  justify-content: center;
}

.kayak-loader-icon {
  width: 36px;
  height: 36px;
  object-fit: contain;
  /* 简单下方淡一点：纯粹向下极弱自然微光投影，无大面积弥散荧光 */
  filter: drop-shadow(0 6px 12px rgba(255, 255, 255, 0.08));
  animation: kayakLogoFloat 1.6s ease-in-out infinite alternate;
}

.kayak-loader-bar {
  width: 96px;
  height: 2px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}

.kayak-loader-progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #484b52 0%, #8a8f98 50%, #dcdfe4 100%);
  border-radius: 999px;
  animation: kayakLoaderFill 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes kayakLogoFloat {
  0% {
    transform: translateY(0);
    filter: drop-shadow(0 5px 10px rgba(255, 255, 255, 0.06));
  }
  100% {
    transform: translateY(-2px);
    filter: drop-shadow(0 8px 14px rgba(255, 255, 255, 0.10));
  }
}

@keyframes kayakLoaderFill {
  0% { width: 15%; }
  50% { width: 75%; }
  100% { width: 100%; }
}

/* Scroll Reveal Classes (only active when JS sets .kayak-motion-ready on html) */
html.kayak-motion-ready .kayak-reveal,
html.kayak-motion-ready .GJ9TEa_carouselCard,
html.kayak-motion-ready .GJ9TEa_benefit {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1), transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

html.kayak-motion-ready .kayak-reveal.is-revealed,
html.kayak-motion-ready .GJ9TEa_carouselCard.is-revealed,
html.kayak-motion-ready .GJ9TEa_benefit.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger for cards */
html.kayak-motion-ready .GJ9TEa_carouselCard,
html.kayak-motion-ready .GJ9TEa_benefit {
  transition-delay: calc(var(--item-index, 0) * 0.09s);
}

/* Feature rows: copy and media synchronized arrival */
html.kayak-motion-ready .kayak-feature-row {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

html.kayak-motion-ready .kayak-feature-row.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

html.kayak-motion-ready .kayak-feature-row .kayak-feature-media {
  transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

html.kayak-motion-ready .kayak-feature-row:hover .kayak-feature-media {
  transform: translateY(-3px);
}

/* Header dynamic scroll styling */
.TZTsQG_header {
  transition: background 0.3s ease, border-color 0.3s ease, -webkit-backdrop-filter 0.3s ease, backdrop-filter 0.3s ease !important;
}
.TZTsQG_header.is-scrolled {
  background: rgba(8, 9, 10, 0.8) !important;
  -webkit-backdrop-filter: blur(18px) saturate(180%) !important;
  backdrop-filter: blur(18px) saturate(180%) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

/* ==========================================================================
   Page Scrollbar Component (右栏页面滚动条组件 - Linear Craft)
   ========================================================================== */

@media (min-width: 769px) {
  html {
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  html::-webkit-scrollbar {
    display: none;
  }
}

.kayak-scrollbar-comp {
  position: fixed;
  right: 6px;
  top: 84px;
  bottom: 28px;
  width: 16px;
  z-index: 999990;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
  opacity: 0.32;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: auto;
}

.kayak-scrollbar-comp:hover,
.kayak-scrollbar-comp.is-active,
.kayak-scrollbar-comp.is-dragging {
  opacity: 1;
}

.kayak-scrollbar-track {
  position: relative;
  width: 3px;
  height: 100%;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  transition: width 0.2s cubic-bezier(0.16, 1, 0.3, 1), background 0.2s ease;
  cursor: pointer;
}

.kayak-scrollbar-comp:hover .kayak-scrollbar-track,
.kayak-scrollbar-comp.is-active .kayak-scrollbar-track {
  width: 5px;
  background: rgba(255, 255, 255, 0.16);
}

/* Draggable Active Thumb */
.kayak-scrollbar-thumb {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  min-height: 42px;
  background: linear-gradient(180deg, #6c717b 0%, #9ba1a6 50%, #dcdfe4 100%);
  border-radius: 999px;
  cursor: grab;
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.15);
  transition: background 0.15s ease, box-shadow 0.15s ease;
  will-change: transform, height;
  z-index: 3;
}

.kayak-scrollbar-thumb:hover,
.kayak-scrollbar-thumb.is-dragging {
  background: #f7f8f8;
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.4);
}

.kayak-scrollbar-thumb.is-dragging {
  cursor: grabbing;
}

/* Section Marker Ticks */
.kayak-scroll-marker {
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 5px;
  height: 5px;
  padding: 0;
  margin: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.24);
  border: 1px solid #08090a;
  outline: none;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
  z-index: 2;
}

.kayak-scrollbar-comp:hover .kayak-scroll-marker {
  width: 7px;
  height: 7px;
}

.kayak-scroll-marker:hover,
.kayak-scroll-marker.is-active {
  background: #ffffff;
  transform: translate(-50%, -50%) scale(1.35);
  box-shadow: 0 0 6px rgba(255, 255, 255, 0.45);
}

/* Floating Section Title / Progress Pill */
.kayak-scrollbar-badge {
  position: absolute;
  right: 22px;
  top: 0;
  transform: translateY(-50%);
  background: rgba(18, 19, 22, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 500;
  color: #f7f8f8;
  white-space: nowrap;
  pointer-events: none;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.45), 0 0 1px rgba(255, 255, 255, 0.1);
  opacity: 0;
  transition: opacity 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: top, opacity;
  z-index: 10;
}

.kayak-scrollbar-comp:hover .kayak-scrollbar-badge,
.kayak-scrollbar-comp.is-active .kayak-scrollbar-badge {
  opacity: 1;
}

/* Mobile: hide custom floating scrollbar, fallback to touch native */
@media (max-width: 768px) {
  .kayak-scrollbar-comp {
    display: none !important;
  }
}

/* Reduced Motion Override */
@media (prefers-reduced-motion: reduce) {
  .kayak-page-loader {
    display: none !important;
  }
  .kayak-scroll-progress {
    display: none !important;
  }
  .kayak-scrollbar-comp {
    opacity: 0.8 !important;
  }
  html.kayak-motion-ready .kayak-reveal,
  html.kayak-motion-ready .GJ9TEa_carouselCard,
  html.kayak-motion-ready .GJ9TEa_benefit,
  html.kayak-motion-ready .kayak-feature-row {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}