:root {
  color-scheme: dark;
  --bg: #08090e;
  --surface: rgba(20, 22, 30, 0.72);
  --surface-solid: #14161e;
  --line: rgba(255, 255, 255, 0.12);
  --line-strong: rgba(255, 255, 255, 0.2);
  --text: #f7f7f5;
  --muted: #a8abb5;
  --blue: #168bff;
  --cyan: #00e5f5;
  --green: #25e6a4;
  --magenta: #e23ef2;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  --background-shift: 0px;
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: "Plus Jakarta Sans", system-ui, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  isolation: isolate;
}

body::before {
  position: fixed;
  inset: -3vmax;
  z-index: -2;
  background: url("/assets/airdows-flow-background.webp") center / cover no-repeat;
  content: "";
  filter: saturate(0.92) contrast(1.02);
  pointer-events: none;
  will-change: transform;
  animation: backgroundDrift 30s var(--ease) infinite alternate;
}

body::after {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(8, 9, 14, 0.32) 0%, rgba(8, 9, 14, 0.72) 62%, rgba(8, 9, 14, 0.96) 100%),
    linear-gradient(90deg, rgba(8, 9, 14, 0.3), transparent 55%, rgba(8, 9, 14, 0.16));
  content: "";
  pointer-events: none;
}

@keyframes backgroundDrift {
  0% {
    transform: translate3d(-0.8%, calc(var(--background-shift) - 0.5%), 0) scale(1.025);
  }
  100% {
    transform: translate3d(0.8%, calc(var(--background-shift) + 0.5%), 0) scale(1.055);
  }
}

button,
input,
a {
  font: inherit;
}

a {
  color: inherit;
}

.hidden-input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.is-hidden {
  display: none !important;
}

.shell {
  width: min(1240px, calc(100% - 64px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  background: rgba(8, 9, 14, 0.72);
  backdrop-filter: blur(24px) saturate(120%);
  -webkit-backdrop-filter: blur(24px) saturate(120%);
}

.header-inner {
  min-height: 76px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 32px;
}

.brand {
  display: inline-flex;
  width: max-content;
  align-items: center;
  gap: 11px;
  color: var(--text);
  font-size: 1.16rem;
  font-weight: 800;
  text-decoration: none;
}

.brand img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  transition: transform 600ms var(--ease), filter 600ms var(--ease);
}

.brand:hover img {
  filter: drop-shadow(0 0 14px rgba(0, 229, 245, 0.32));
  transform: translateY(-2px) rotate(-4deg) scale(1.04);
}

.main-nav,
.footer-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.main-nav a,
.footer-links a {
  position: relative;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 600;
  text-decoration: none;
  transition: color 300ms var(--ease);
}

.main-nav a::after,
.footer-links a::after {
  position: absolute;
  right: 0;
  bottom: -7px;
  left: 0;
  height: 1px;
  background: var(--cyan);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 500ms var(--ease);
}

.main-nav a:hover::after,
.footer-links a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.main-nav a:hover,
.footer-links a:hover {
  color: var(--text);
}

.header-action {
  justify-self: end;
}

.header-controls {
  display: flex;
  align-items: center;
  justify-self: end;
  gap: 12px;
}

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.025);
}

.language-switch button {
  min-width: 31px;
  height: 27px;
  padding: 0 6px;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.67rem;
  font-weight: 700;
  transition: background 250ms var(--ease), color 250ms var(--ease);
}

.language-switch button:hover,
.language-switch button:focus-visible {
  color: var(--text);
  outline: none;
}

.language-switch button.is-active {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: var(--text);
  color: #090a0f;
  cursor: pointer;
  font-weight: 800;
  text-align: center;
  text-decoration: none;
  transition: transform 450ms var(--ease), background 450ms var(--ease), border-color 450ms var(--ease), color 450ms var(--ease);
}

.button:hover {
  background: #fff;
  box-shadow: 0 16px 38px rgba(0, 0, 0, 0.24);
  transform: translateY(-3px);
}

.button:focus-visible,
.drop-zone:focus-visible,
.qr-button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.button-secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.button-secondary:hover {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.1);
}

.hero {
  min-height: calc(100vh - 76px);
  display: flex;
  align-items: center;
  padding: 80px 0;
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  max-width: 580px;
  text-shadow: 0 10px 44px rgba(0, 0, 0, 0.28);
}

.hero-title {
  max-width: 580px;
  margin: 0 0 24px;
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.2px;
  color: var(--text);
}

.hero-subtitle {
  max-width: 520px;
  margin: 0 0 32px;
  color: #b4b7c3;
  font-size: 1.15rem;
  line-height: 1.6;
  font-weight: 400;
}

.hero-trust-line {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 32px 0 40px;
  padding: 0;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #9ca3af;
  font-size: 0.95rem;
  font-weight: 500;
  margin: 0;
}

.trust-item::before {
  content: '';
  width: 4px;
  height: 4px;
  background: var(--green);
  border-radius: 50%;
  flex-shrink: 0;
}

.hero-cta {
  min-height: 64px;
  padding: 0 48px;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.3px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  transition: transform 300ms var(--ease), box-shadow 300ms var(--ease);
  display: inline-flex;
}

.hero-cta:hover {
  transform: translateY(-4px);
  box-shadow: 0 28px 76px rgba(0, 0, 0, 0.4);
}

.hero-subtext {
  margin: 20px 0 0;
  color: #6b7280;
  font-size: 0.9rem;
  font-weight: 500;
}

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 500px;
}

.device-mockup {
  width: 100%;
  max-width: 320px;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1200px;
  animation: deviceFloat 6s ease-in-out infinite;
}

.mockup-illustration {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 40px 80px rgba(0, 0, 0, 0.4));
}

@keyframes deviceFloat {
  0%, 100% {
    transform: translateY(0px) rotateX(0deg) rotateZ(-2deg);
  }
  50% {
    transform: translateY(-20px) rotateX(2deg) rotateZ(2deg);
  }
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .hero-visual {
    min-height: 400px;
  }
  
  .hero-title {
    font-size: 2.8rem;
  }
  
  .hero-subtitle {
    font-size: 1.05rem;
  }
}

@media (max-width: 640px) {
  .hero {
    padding: 60px 0;
  }
  
  .hero-container {
    gap: 30px;
  }
  
  .hero-title {
    font-size: 2rem;
    margin-bottom: 16px;
  }
  
  .hero-subtitle {
    font-size: 0.95rem;
    margin-bottom: 24px;
  }
  
  .hero-trust-line {
    margin: 24px 0 32px;
    gap: 10px;
  }
  
  .trust-item {
    font-size: 0.9rem;
  }
  
  .hero-cta {
    min-height: 56px;
    padding: 0 32px;
    font-size: 1rem;
    width: 100%;
  }
  
  .hero-visual {
    min-height: 320px;
  }
}

.hero-copy {
  max-width: 1080px;
  text-shadow: 0 10px 44px rgba(0, 0, 0, 0.28);
}

.hero-kicker,
.section-kicker {
  margin: 0 0 22px;
  color: var(--green);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  letter-spacing: 0;
}

.hero-description {
  max-width: 720px;
  margin-bottom: 0;
  color: #c7c9d0;
  font-size: 1.22rem;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-top: 36px;
}

.hero-primary {
  min-height: 58px;
  padding-inline: 28px;
}

.hero-secondary {
  color: #d8dbe3;
  font-size: 0.94rem;
  font-weight: 700;
  text-decoration: none;
  transition: color 300ms var(--ease), transform 500ms var(--ease);
}

.hero-secondary:hover {
  color: #fff;
  transform: translateX(4px);
}

.hero-instruction {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 20px 0 0;
  color: #969ba8;
  font-size: 0.82rem;
  font-weight: 600;
}

.hero-instruction > span[aria-hidden="true"] {
  width: 7px;
  height: 7px;
  flex: 0 0 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 18px rgba(37, 230, 164, 0.65);
}

.transfer-tool {
  --tilt-x: 0deg;
  --tilt-y: 0deg;
  width: min(980px, calc(100% - 80px));
  display: grid;
  grid-template-columns: minmax(0, 1fr) 270px;
  margin: 76px 0 0 auto;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(15, 17, 24, 0.66);
  box-shadow: 0 42px 110px rgba(0, 0, 0, 0.36);
  backdrop-filter: blur(30px) saturate(125%);
  -webkit-backdrop-filter: blur(30px) saturate(125%);
  transform-style: preserve-3d;
  will-change: transform;
}

.drop-zone {
  position: relative;
  min-height: 330px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 54px;
  border-right: 1px solid var(--line);
  cursor: default;
  transition: background 500ms var(--ease), box-shadow 500ms var(--ease);
}

.drop-zone.is-over {
  background: rgba(0, 229, 245, 0.07);
  box-shadow: inset 0 0 0 1px rgba(0, 229, 245, 0.42);
}

.drop-zone.is-loading {
  background: rgba(37, 230, 164, 0.06);
}

.drop-overline,
.qr-overline {
  margin-bottom: 12px;
  color: var(--cyan);
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
}

.drop-zone h2 {
  max-width: 560px;
  margin-bottom: 12px;
  font-size: 2.55rem;
  line-height: 1.1;
}

.drop-description {
  max-width: 500px;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 0.98rem;
}

.file-picker-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

.file-picker-row .button {
  min-width: 170px;
}

.file-picker-row .button:disabled {
  cursor: wait;
  opacity: 0.65;
  transform: none;
}

.staged-files {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.staged-file-copy {
  min-width: 0;
  display: grid;
  gap: 5px;
}

.staged-file-copy strong,
.staged-file-copy span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.staged-file-copy strong {
  color: var(--text);
  font-size: 0.92rem;
}

.staged-file-copy span {
  color: var(--muted);
  font-size: 0.74rem;
}

.staged-continue {
  min-width: 196px;
  background: var(--blue);
  color: #fff;
}

.staged-continue:hover {
  background: #2995ff;
}

.staged-continue:disabled {
  cursor: wait;
  opacity: 0.58;
  transform: none;
}

.drop-hint {
  margin: 0;
  color: #777c89;
  font-size: 0.76rem;
}

.air-pet {
  position: absolute;
  top: 28px;
  right: 30px;
  width: 48px;
  height: 40px;
  border: 2px solid var(--cyan);
  border-radius: 8px;
  background: var(--blue);
  transition: transform 500ms var(--ease), border-color 500ms var(--ease);
  animation: petFloat 4.5s var(--ease) infinite;
}

@keyframes petFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.air-pet::before {
  position: absolute;
  top: 12px;
  left: 13px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #c8f9ff;
  box-shadow: 13px 0 #c8f9ff;
  content: "";
}

.air-pet::after {
  position: absolute;
  bottom: 7px;
  left: 18px;
  width: 9px;
  height: 4px;
  border-bottom: 2px solid #c8f9ff;
  border-radius: 0 0 8px 8px;
  content: "";
}

.is-over .air-pet,
.is-loading .air-pet {
  border-color: var(--green);
  animation-duration: 1.2s;
  transform: translateY(-4px);
}

.tool-aside {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 34px 28px;
  background: rgba(255, 255, 255, 0.025);
  text-align: center;
}

.tool-aside h3 {
  margin-bottom: 7px;
  font-size: 1rem;
}

.tool-aside p {
  margin-bottom: 20px;
  color: var(--muted);
  font-size: 0.8rem;
}

.qr-button {
  width: 142px;
  height: 142px;
  display: grid;
  place-items: center;
  padding: 8px;
  border: 0;
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
  transition: transform 450ms var(--ease);
}

.qr-button:hover {
  transform: translateY(-3px);
}

.qr-button canvas,
.qr-button img {
  display: block;
  width: 126px !important;
  height: 126px !important;
}

.tool-note {
  max-width: 980px;
  margin: 18px 0 0 auto;
  color: #858a96;
  font-size: 0.78rem;
  text-align: right;
}

.motion-ready [data-reveal] {
  opacity: 0;
  transform: translate3d(0, 34px, 0);
  transition:
    opacity 900ms var(--ease) var(--reveal-delay, 0ms),
    transform 1100ms var(--ease) var(--reveal-delay, 0ms);
}

.motion-ready [data-reveal].is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

.motion-ready .transfer-tool[data-reveal] {
  transform: perspective(1300px) translate3d(0, 44px, 0) rotateX(var(--tilt-x)) rotateY(var(--tilt-y));
}

.motion-ready .transfer-tool[data-reveal].is-visible {
  transform: perspective(1300px) translate3d(0, 0, 0) rotateX(var(--tilt-x)) rotateY(var(--tilt-y));
}

.manifesto {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, 0.5fr);
  align-items: end;
  gap: 96px;
  padding: 180px 0;
}

.manifesto h2 {
  max-width: 800px;
  margin-bottom: 0;
  font-size: 5rem;
  line-height: 1.02;
  white-space: pre-line;
}

.manifesto-copy {
  padding-bottom: 8px;
}

.manifesto-copy p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.75;
}

.bento-section,
.process-section,
.guides-section,
.faq-section {
  padding: 132px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 64px;
}

.section-heading h2 {
  margin-bottom: 18px;
  font-size: 3.6rem;
  line-height: 1.08;
}

.section-heading p:last-child {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.04rem;
}

.bento {
  display: grid;
  grid-template-columns: 1.18fr 0.82fr;
  grid-template-rows: repeat(2, minmax(230px, auto));
  gap: 16px;
}

.feature {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-width: 0;
  padding: 38px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.025);
  transition: border-color 450ms var(--ease), background 450ms var(--ease), transform 450ms var(--ease);
}

.feature:hover {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.045);
  transform: translateY(-3px);
}

.feature-large {
  grid-row: 1 / 3;
  min-height: 480px;
}

.feature-index {
  position: absolute;
  top: 30px;
  left: 36px;
  color: var(--cyan);
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1;
  text-shadow: 0 0 24px rgba(0, 229, 245, 0.2);
}

.feature-large::after {
  position: absolute;
  top: 42px;
  right: -30px;
  width: 190px;
  height: 230px;
  border: 1px solid rgba(0, 229, 245, 0.28);
  border-radius: 8px;
  content: "";
  transform: rotate(12deg);
}

.feature h3 {
  max-width: 520px;
  margin-bottom: 12px;
  font-size: 2rem;
  line-height: 1.15;
}

.feature p {
  max-width: 560px;
  margin-bottom: 0;
  color: var(--muted);
}

.process-list {
  border-top: 1px solid var(--line);
}

.process-step {
  position: relative;
  display: grid;
  grid-template-columns: 116px 0.7fr 1.3fr;
  align-items: baseline;
  gap: 32px;
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.process-step::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--blue), var(--magenta));
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 750ms var(--ease);
}

.process-step:hover::after {
  transform: scaleX(1);
}

.process-step span {
  color: #20dfff;
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1;
  text-shadow: 0 0 24px rgba(0, 229, 245, 0.2);
  transition: color 500ms var(--ease), transform 600ms var(--ease);
}

.process-step:hover span {
  color: #7defff;
  transform: translateX(8px);
}

.process-step h3 {
  margin-bottom: 0;
  font-size: 2rem;
  transition: transform 600ms var(--ease);
}

.process-step:hover h3 {
  transform: translateX(6px);
}

.process-step p {
  margin-bottom: 0;
  color: var(--muted);
}

.guide-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.guide-link {
  min-height: 170px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 28px 26px 22px;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
  transition: background 450ms var(--ease), color 450ms var(--ease);
}

.guide-link + .guide-link {
  border-left: 1px solid var(--line);
}

.guide-link:hover {
  background: rgba(255, 255, 255, 0.035);
}

.guide-link span {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.guide-link strong {
  max-width: 280px;
  font-size: 1.2rem;
  line-height: 1.25;
  transition: color 450ms var(--ease), transform 550ms var(--ease);
}

.guide-link:hover strong {
  color: var(--cyan);
  transform: translateX(6px);
}

.faq-layout {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 100px;
}

.faq-layout .section-heading {
  margin-bottom: 0;
}

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

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

.faq-list summary::after {
  color: var(--cyan);
  content: "+";
  font-size: 1.2rem;
  font-weight: 500;
  transition: color 400ms var(--ease), transform 500ms var(--ease);
}

.faq-list details[open] summary::after {
  content: "−";
  color: var(--magenta);
  transform: rotate(180deg);
}

.faq-list details p {
  max-width: 650px;
  margin: 0;
  padding: 0 40px 26px 0;
  color: var(--muted);
  animation: faqReveal 500ms var(--ease);
}

@keyframes faqReveal {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.final-cta {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) auto;
  align-items: end;
  gap: 80px;
  padding: 160px 0;
  border-top: 1px solid var(--line);
}

.final-cta h2 {
  max-width: 820px;
  margin-bottom: 20px;
  font-size: 4.5rem;
  line-height: 1.03;
}

.final-cta p:last-child {
  max-width: 620px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.site-footer {
  border-top: 1px solid var(--line);
}

.footer-inner {
  min-height: 112px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  color: var(--muted);
  font-size: 0.8rem;
}

.site-footer .footer-links {
  flex-wrap: wrap;
  justify-content: flex-end;
}

@media (max-width: 980px) {
  .shell {
    width: min(100% - 48px, 1240px);
  }

  .header-inner {
    grid-template-columns: 1fr auto;
  }

  .main-nav {
    display: none;
  }

  h1 {
    font-size: 4.1rem;
  }

  .transfer-tool {
    width: 100%;
  }

  .manifesto {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .manifesto h2 {
    font-size: 4rem;
  }

  .manifesto-copy {
    max-width: 580px;
  }

  .faq-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

@media (max-width: 720px) {
  .shell {
    width: min(100% - 32px, 1240px);
  }

  .site-header {
    position: relative;
  }

  .header-inner {
    min-height: 68px;
    gap: 14px;
  }

  .brand {
    font-size: 1rem;
  }

  .brand img {
    width: 31px;
    height: 31px;
  }

  .header-action {
    min-height: 40px;
    padding: 0 14px;
    font-size: 0.76rem;
  }

  .header-controls {
    gap: 7px;
  }

  .language-switch button {
    min-width: 27px;
    height: 25px;
    padding: 0 4px;
    font-size: 0.62rem;
  }

  .hero {
    min-height: auto;
    padding: 72px 0 82px;
  }

  body::before {
    background-position: 58% center;
  }

  h1 {
    font-size: 3rem;
    line-height: 1.06;
  }

  .hero-description {
    font-size: 1rem;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
    gap: 18px;
    margin-top: 30px;
  }

  .hero-primary {
    width: 100%;
  }

  .hero-secondary {
    align-self: flex-start;
  }

  .hero-instruction {
    align-items: flex-start;
    line-height: 1.5;
  }

  .transfer-tool {
    grid-template-columns: 1fr;
    margin-top: 54px;
  }

  .drop-zone {
    min-height: 330px;
    padding: 70px 24px 34px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .drop-zone h2 {
    font-size: 2rem;
  }

  .file-picker-row {
    align-items: stretch;
    flex-direction: column;
  }

  .file-picker-row .button {
    width: 100%;
  }

  .staged-files {
    align-items: stretch;
    flex-direction: column;
    gap: 16px;
  }

  .staged-continue {
    width: 100%;
  }

  .tool-aside {
    padding: 36px 24px;
  }

  .tool-note {
    text-align: left;
  }

  .manifesto,
  .bento-section,
  .process-section,
  .guides-section,
  .faq-section,
  .final-cta {
    padding: 96px 0;
  }

  .manifesto h2,
  .final-cta h2 {
    font-size: 3rem;
  }

  .section-heading {
    margin-bottom: 42px;
  }

  .section-heading h2 {
    font-size: 2.55rem;
  }

  .bento {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }

  .feature,
  .feature-large {
    min-height: 300px;
    grid-row: auto;
    padding: 30px 24px;
  }

  .feature-large::after {
    width: 120px;
    height: 150px;
  }

  .feature h3 {
    font-size: 1.65rem;
  }

  .feature-index {
    top: 26px;
    left: 24px;
    font-size: 1.45rem;
  }

  .process-step {
    grid-template-columns: 64px 1fr;
    gap: 14px;
  }

  .process-step span {
    font-size: 1.45rem;
  }

  .process-step p {
    grid-column: 2;
  }

  .guide-links {
    grid-template-columns: 1fr;
  }

  .guide-link + .guide-link {
    border-left: 0;
  }

  .final-cta {
    grid-template-columns: 1fr;
    align-items: stretch;
    gap: 38px;
  }

  .final-cta .button {
    width: 100%;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 30px 0;
  }

  .footer-links,
  .site-footer .footer-links {
    justify-content: flex-start;
    gap: 14px 20px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  body::before {
    animation: none !important;
    transform: scale(1.015) !important;
  }

  .motion-ready [data-reveal],
  .motion-ready .transfer-tool[data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
}