:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  --page: #ffffff;
  --ink: #262626;
  --muted: #727782;
  --line: #e9e9e9;
  --coral: #f45b51;
  --coral-hover: #df4b42;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--page);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--page);
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 5px;
}

.page-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.content-width {
  width: min(100% - 128px, 1448px);
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid var(--line);
}

.header-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 15px;
  text-decoration: none;
  font-size: 23px;
  font-weight: 750;
  letter-spacing: 0.015em;
  white-space: nowrap;
}

.brand img {
  width: 44px;
  height: 44px;
  display: block;
  clip-path: inset(3.15% round 25%);
}

.domain,
.footer-domain {
  color: var(--muted);
  font-size: 19px;
  letter-spacing: 0.015em;
}

.hero {
  display: grid;
  grid-template-columns: minmax(260px, 430px) minmax(0, 1fr);
  align-items: center;
  column-gap: clamp(64px, 5vw, 80px);
  min-height: 512px;
  padding-block: 92px 84px;
}

.hero-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  filter: drop-shadow(0 12px 14px rgb(0 0 0 / 13%));
}

.hero-icon {
  display: block;
  width: min(100%, 330px);
  height: auto;
  aspect-ratio: 1;
  clip-path: inset(3.15% round 25%);
}

.hero-copy {
  min-width: 0;
  transform: translateY(34px);
}

.hero h1 {
  margin: 0;
  font-size: clamp(42px, 4vw, 64px);
  font-weight: 760;
  line-height: 1.18;
  letter-spacing: -0.047em;
}

.hero-description {
  max-width: 850px;
  margin: 30px 0 40px;
  color: var(--muted);
  font-size: clamp(19px, 1.65vw, 24px);
  font-weight: 400;
  line-height: 1.65;
  letter-spacing: 0.005em;
}

.download-button {
  width: fit-content;
  min-width: 360px;
  min-height: 77px;
  padding: 18px 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 17px;
  border-radius: 10px;
  background: var(--coral);
  color: #ffffff;
  text-decoration: none;
  font-size: 25px;
  font-weight: 700;
  line-height: 1.2;
  box-shadow: 0 6px 18px rgb(244 91 81 / 12%);
  transition: background-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.download-button:hover {
  background: var(--coral-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgb(244 91 81 / 18%);
}

.download-button svg {
  width: 32px;
  height: 32px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}

.download-meta {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.45;
}


.features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  padding-block: 63px 76px;
  border-top: 1px solid var(--line);
}

.feature {
  min-width: 0;
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  align-items: start;
  column-gap: 24px;
  padding-inline: 0 32px;
}

.feature + .feature {
  border-left: 1px solid var(--line);
  padding-left: 54px;
}

.feature-icon {
  width: 64px;
  height: 64px;
  fill: none;
  stroke: var(--ink);
  stroke-width: 3.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feature-icon .accent-stroke {
  stroke: var(--coral);
  stroke-width: 4.2;
}

.feature-icon .accent-fill {
  fill: var(--coral);
  stroke: var(--coral);
}

.feature-icon .plus-stroke {
  stroke: #ffffff;
  stroke-width: 2.7;
}

.word-icon {
  stroke-width: 5.7;
}

.word-icon .accent-stroke {
  stroke-width: 6.5;
}

.feature h2 {
  margin: 0 0 13px;
  font-size: 22px;
  font-weight: 720;
  line-height: 1.4;
  white-space: nowrap;
}

.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

.site-footer {
  margin-top: auto;
  padding: 31px 24px 38px;
  border-top: 1px solid var(--line);
  text-align: center;
  color: #858995;
  font-size: 16px;
  line-height: 1.5;
}

.site-footer p {
  margin: 0;
}

.site-footer .footer-domain {
  font-size: 17px;
}

.footer-rule {
  display: block;
  width: 21px;
  height: 1px;
  margin: 18px auto 17px;
  background: #c9ccd1;
}

@media (max-width: 1140px) {
  .content-width {
    width: min(100% - 72px, 1000px);
  }

  .hero {
    grid-template-columns: minmax(220px, 290px) minmax(0, 1fr);
    column-gap: 52px;
  }

  .hero-copy {
    transform: none;
  }

  .hero-icon {
    width: min(100%, 280px);
  }

  .feature {
    grid-template-columns: 58px minmax(0, 1fr);
    column-gap: 16px;
    padding-right: 20px;
  }

  .feature + .feature {
    padding-left: 23px;
  }

  .feature-icon {
    width: 52px;
    height: 52px;
  }

  .feature h2 {
    font-size: 19px;
    white-space: normal;
  }

  .feature p {
    font-size: 15px;
  }
}

@media (max-width: 760px) {
  .content-width {
    width: min(100% - 42px, 590px);
  }

  .header-inner {
    min-height: 72px;
    gap: 10px;
  }

  .brand {
    gap: 10px;
    font-size: 19px;
  }

  .brand img {
    width: 37px;
    height: 37px;
  }

  .domain {
    font-size: 12px;
    letter-spacing: -0.01em;
    white-space: nowrap;
  }

  .hero {
    display: flex;
    flex-direction: column;
    min-height: 0;
    padding-block: 53px 57px;
    text-align: center;
  }

  .hero-icon {
    width: clamp(152px, 43vw, 190px);
  }

  .hero-icon-wrap {
    justify-content: center;
  }

  .hero-icon-wrap {
    filter: drop-shadow(0 9px 12px rgb(0 0 0 / 12%));
  }

  .hero-copy {
    width: 100%;
  }

  .hero h1 {
    margin-top: 40px;
    font-size: clamp(31px, 8vw, 42px);
    line-height: 1.27;
    letter-spacing: -0.05em;
    text-wrap: balance;
  }

  .hero-description {
    margin: 19px auto 29px;
    max-width: 500px;
    font-size: 16px;
    line-height: 1.75;
    text-wrap: pretty;
  }

  .download-button {
    width: 100%;
    min-width: 0;
    min-height: 64px;
    padding: 15px 20px;
    font-size: 20px;
    gap: 12px;
  }

  .download-button svg {
    width: 26px;
    height: 26px;
  }

  .download-meta {
    margin-top: 15px;
    font-size: 14px;
  }


  .features {
    display: flex;
    flex-direction: column;
    gap: 37px;
    padding-block: 44px 55px;
  }

  .feature,
  .feature + .feature {
    grid-template-columns: 60px minmax(0, 1fr);
    column-gap: 18px;
    padding: 0;
    border: 0;
  }

  .feature-icon {
    width: 53px;
    height: 53px;
  }

  .feature h2 {
    margin-bottom: 6px;
    font-size: 20px;
  }

  .feature p {
    font-size: 15px;
    line-height: 1.65;
  }

  .site-footer {
    padding-block: 26px 33px;
    font-size: 14px;
  }

  .site-footer .footer-domain {
    font-size: 14px;
  }
}

@media (max-width: 360px) {
  .content-width {
    width: min(100% - 30px, 590px);
  }

  .brand {
    font-size: 17px;
  }

  .domain {
    font-size: 10px;
  }
}

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

  .download-button:hover {
    transform: none;
  }
}