:root {
  color-scheme: light dark;
  --background: #fff8f0;
  --background-deep: #fff0e5;
  --surface: #fffdf9;
  --surface-strong: #ffffff;
  --ink: #4a1a2c;
  --ink-soft: #74485a;
  --ink-faint: #9a7483;
  --accent: #ff8da1;
  --accent-strong: #b7355b;
  --line: rgba(74, 26, 44, 0.17);
  --shadow: rgba(74, 26, 44, 0.16);
  --radius: 24px;
  --content: min(1240px, calc(100% - 48px));
  --font-sans: ui-rounded, "SF Pro Rounded", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--background);
  color: var(--ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 20;
  padding: 10px 14px;
  border-radius: 12px;
  background: var(--ink);
  color: var(--surface);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  width: var(--content);
  min-height: 72px;
  margin: 0 auto;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--background) 88%, transparent);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.brand img {
  border-radius: 13px;
}

nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: var(--ink-soft);
  font-size: 0.9rem;
  font-weight: 700;
}

nav a,
.footer-links a {
  transition: color 180ms ease;
}

nav a:hover,
nav a:focus-visible,
.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--accent-strong);
}

.header-contact {
  justify-self: end;
  padding: 10px 15px;
  border: 2px solid var(--ink);
  border-radius: 14px;
  background: var(--surface-strong);
  box-shadow: 0 3px 0 var(--ink);
  font-size: 0.84rem;
  font-weight: 850;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.header-contact:hover {
  transform: translateY(-1px);
}

.header-contact:active {
  box-shadow: 0 0 0 var(--ink);
  transform: translateY(3px);
}

main,
footer {
  width: var(--content);
  margin: 0 auto;
}

.hero {
  display: grid;
  min-height: calc(100dvh - 72px);
  grid-template-columns: minmax(0, 0.83fr) minmax(420px, 1.17fr);
  align-items: center;
  gap: clamp(40px, 6vw, 92px);
  padding: clamp(64px, 8vh, 92px) 0;
}

.hero-copy {
  position: relative;
  z-index: 2;
  animation: hero-in 720ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

.eyebrow {
  margin: 0 0 26px;
  color: var(--accent-strong);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.16em;
}

h1,
h2,
h3,
p {
  text-wrap: pretty;
}

h1 {
  margin: 0;
  font-size: clamp(3.8rem, 6.5vw, 7rem);
  font-weight: 950;
  letter-spacing: -0.075em;
  line-height: 0.94;
}

h1 span {
  display: block;
  white-space: nowrap;
}

.hero-lead {
  max-width: 29rem;
  margin: 28px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.02rem, 1.35vw, 1.2rem);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 0 21px;
  border: 3px solid var(--ink);
  border-radius: 16px;
  font-weight: 900;
  white-space: nowrap;
  box-shadow: 0 5px 0 var(--ink);
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button:active {
  box-shadow: 0 0 0 var(--ink);
  transform: translateY(5px);
}

.button-primary {
  background: var(--accent);
  color: var(--ink);
}

.button-secondary {
  background: var(--surface-strong);
  color: var(--ink);
}

.hero-visual {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 3px solid var(--ink);
  border-radius: var(--radius);
  background: #fff8f0;
  box-shadow: 10px 12px 0 var(--shadow);
  transform: rotate(1.5deg);
}

.hero-visual::after {
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(255, 255, 255, 0.62);
  border-radius: 16px;
  content: "";
  pointer-events: none;
}

.hero-visual img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.product-section,
.ways-section,
.about-section {
  padding: clamp(88px, 11vw, 148px) 0;
}

.section-heading {
  max-width: 690px;
}

h2 {
  margin: 0;
  font-size: clamp(2.7rem, 5vw, 5.2rem);
  font-weight: 930;
  letter-spacing: -0.065em;
  line-height: 1;
}

.section-heading > p,
.ways-copy > p,
.about-section p {
  margin: 24px 0 0;
  color: var(--ink-soft);
  font-size: 1.05rem;
  line-height: 1.8;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1.28fr 0.72fr;
  grid-template-rows: repeat(2, minmax(210px, auto));
  gap: 18px;
  margin-top: 58px;
}

.feature {
  position: relative;
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  padding: clamp(28px, 4vw, 50px);
  border: 3px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: 7px 8px 0 var(--shadow);
}

.feature-main {
  grid-row: 1 / 3;
  min-height: 500px;
  background: var(--surface-strong);
}

.feature-hum {
  background: var(--accent);
}

.feature-create {
  background: var(--background-deep);
}

.feature h3 {
  max-width: 14ch;
  margin: 0;
  font-size: clamp(1.8rem, 3.25vw, 3.45rem);
  font-weight: 930;
  letter-spacing: -0.055em;
  line-height: 1.02;
}

.feature p {
  max-width: 31rem;
  margin: 20px 0 0;
  color: var(--ink-soft);
  line-height: 1.72;
}

.feature-hum p {
  color: #4a1a2c;
}

.feature-mark {
  align-self: flex-end;
  color: var(--accent-strong);
  font-size: clamp(4rem, 10vw, 9rem);
  font-weight: 950;
  letter-spacing: -0.1em;
  line-height: 0.78;
  opacity: 1;
  transform: translate(3%, 5%);
}

.ways-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: center;
  gap: clamp(52px, 9vw, 130px);
  border-top: 1px solid var(--line);
}

.studio-visual {
  margin: 0;
  overflow: hidden;
  border: 3px solid var(--ink);
  border-radius: var(--radius);
  background: #fff8f0;
  box-shadow: 8px 9px 0 var(--shadow);
  transform: rotate(-1.2deg);
}

.studio-visual img {
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
}

.ways-copy dl {
  display: grid;
  gap: 20px;
  margin: 40px 0 0;
}

.ways-copy dl div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.ways-copy dt {
  font-weight: 900;
}

.ways-copy dd {
  margin: 0;
  color: var(--ink-soft);
}

.about-section {
  display: grid;
  grid-template-columns: 144px minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(28px, 5vw, 64px);
  border-top: 1px solid var(--line);
}

.about-section img {
  border-radius: 28px;
  box-shadow: 6px 7px 0 var(--shadow);
}

.about-section h2 {
  max-width: 14ch;
  font-size: clamp(2.4rem, 4.4vw, 4.8rem);
}

footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 26px 48px;
  padding: 44px 0 52px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.footer-brand strong {
  color: var(--ink);
  font-size: 1.15rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px 24px;
}

.filing-note {
  max-width: 58rem;
  margin: 0;
  line-height: 1.7;
}

.copyright {
  justify-self: end;
  margin: 0;
}

.reveal {
  opacity: 1;
}

a:focus-visible {
  outline: 3px solid var(--accent-strong);
  outline-offset: 4px;
}

@keyframes hero-in {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  :root {
    --content: min(100% - 32px, 720px);
  }

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

  nav {
    display: none;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 52px;
    padding: 72px 0 84px;
  }

  h1 {
    font-size: clamp(3.45rem, 13vw, 5.6rem);
  }

  .hero-copy {
    max-width: 650px;
  }

  .hero-visual {
    transform: none;
  }

  .feature-grid,
  .ways-section {
    grid-template-columns: 1fr;
  }

  .feature-grid {
    grid-template-rows: auto;
  }

  .feature-main {
    min-height: 420px;
    grid-row: auto;
  }

  .ways-section {
    gap: 64px;
  }

  .studio-visual {
    width: min(100%, 580px);
  }

  .about-section {
    grid-template-columns: 112px 1fr;
  }

  .about-section img {
    width: 112px;
    height: 112px;
  }

  .about-section .button {
    width: fit-content;
    grid-column: 2;
  }
}

@media (max-width: 600px) {
  :root {
    --content: calc(100% - 28px);
    --radius: 20px;
  }

  .site-header {
    min-height: 66px;
  }

  .brand img {
    width: 38px;
    height: 38px;
  }

  .brand span {
    font-size: 1rem;
  }

  .header-contact {
    padding: 9px 11px;
    font-size: 0.76rem;
  }

  .hero {
    padding-top: 58px;
  }

  h1 {
    font-size: clamp(3rem, 14vw, 4.6rem);
  }

  h1 span {
    white-space: normal;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .button {
    padding-inline: 14px;
    font-size: 0.9rem;
  }

  .product-section,
  .ways-section,
  .about-section {
    padding: 82px 0;
  }

  .feature-grid {
    gap: 14px;
    margin-top: 42px;
  }

  .feature,
  .feature-main {
    min-height: 280px;
  }

  .feature-mark {
    font-size: 4.4rem;
  }

  .ways-copy dl div {
    grid-template-columns: 86px 1fr;
    gap: 16px;
  }

  .about-section {
    grid-template-columns: 1fr;
  }

  .about-section img {
    width: 96px;
    height: 96px;
  }

  .about-section .button {
    grid-column: auto;
  }

  footer {
    grid-template-columns: 1fr;
  }

  .footer-links {
    justify-content: flex-start;
  }

  .copyright {
    justify-self: start;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #22151a;
    --background-deep: #2d1b22;
    --surface: #302029;
    --surface-strong: #37232d;
    --ink: #fff4f6;
    --ink-soft: #e2bdc8;
    --ink-faint: #bd929f;
    --accent: #ff8da1;
    --accent-strong: #ff9eb0;
    --line: rgba(255, 244, 246, 0.17);
    --shadow: rgba(8, 3, 5, 0.5);
  }

  .button,
  .header-contact,
  .feature,
  .hero-visual,
  .studio-visual {
    border-color: #fff4f6;
  }

  .button,
  .header-contact {
    box-shadow: 0 5px 0 #fff4f6;
  }

  .header-contact {
    box-shadow: 0 3px 0 #fff4f6;
  }

  .button-primary,
  .feature-hum {
    color: #4a1a2c;
  }
}

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

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

}