@import url("https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Manrope:wght@400;500;600;700;800&display=swap");
:root {
  --ink: #171819;
  --muted: #6b7073;
  --line: #d9ddda;
  --paper: #f3f4f0;
  --blue: #3478f6;
  --blue-dark: #245dc8;
  --radius: 10px;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: Manrope, "Microsoft YaHei", sans-serif;
  line-height: 1.5;
}
a {
  color: inherit;
  text-decoration: none;
}
button,
input {
  font: inherit;
}
.section-shell {
  width: min(1160px, calc(100% - 48px));
  margin: 0 auto;
}
.site-header {
  height: 78px;
  display: flex;
  align-items: center;
  gap: 42px;
  width: min(1160px, calc(100% - 48px));
  margin: auto;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: -0.03em;
}
.brand img {
  width: 29px;
  height: 29px;
  object-fit: contain;
}
.desktop-nav {
  display: flex;
  gap: 28px;
  margin-left: auto;
  color: var(--muted);
  font-size: 13px;
}
.desktop-nav a:hover,
.text-link:hover {
  color: var(--blue);
}
.header-download {
  font-size: 13px;
  font-weight: 700;
}
.header-download span {
  color: var(--blue);
  margin-left: 5px;
}
.menu-button {
  display: none;
  background: none;
  border: 0;
  font-size: 21px;
}
.hero {
  min-height: 600px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 72px;
  padding: 42px 0 58px;
}
.eyebrow {
  font:
    500 11px/1.2 "DM Mono",
    monospace;
  letter-spacing: 0.14em;
  color: var(--blue);
  margin: 0 0 24px;
}
.hero h1,
.section-heading h2,
.workflow-copy h2,
.download h2 {
  font-size: clamp(47px, 6vw, 84px);
  line-height: 1.02;
  letter-spacing: -0.07em;
  margin: 0 0 26px;
  font-weight: 800;
}
.hero h1 em {
  font-style: normal;
  color: var(--blue);
}
.hero-lede {
  max-width: 460px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
  margin: 0 0 31px;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 24px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 25px;
  min-height: 50px;
  padding: 0 18px;
  border-radius: 7px;
  font-size: 13px;
  font-weight: 700;
}
.button-primary {
  background: var(--blue);
  color: #fff;
}
.button-primary:hover {
  background: var(--blue-dark);
}
.button-light {
  background: #fff;
  color: var(--ink);
  padding: 0 22px;
}
.button-light:hover {
  background: #e4e9e3;
}
.text-link {
  font-size: 13px;
  font-weight: 700;
}
.text-link span {
  color: var(--blue);
  margin-left: 7px;
}
.hero-note {
  font:
    11px "DM Mono",
    monospace;
  color: #989e9d;
  margin-top: 35px;
}
.hero-visual {
  position: relative;
}
.visual-frame {
  position: relative;
  aspect-ratio: 1/0.57;
  overflow: hidden;
  background: #242725;
  border-radius: var(--radius);
}
.visual-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85);
}
.visual-frame:after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(14, 17, 17, 0.05),
    rgba(14, 17, 17, 0.65)
  );
}
.visual-chrome,
.visual-caption {
  position: absolute;
  z-index: 1;
  left: 24px;
  right: 24px;
  display: flex;
  justify-content: space-between;
  color: #fff;
}
.visual-chrome {
  top: 22px;
  font:
    11px "DM Mono",
    monospace;
  opacity: 0.75;
}
.visual-caption {
  bottom: 25px;
  font-size: 14px;
}
.visual-stamp {
  position: absolute;
  right: -22px;
  bottom: 30px;
  padding: 17px 16px;
  background: var(--blue);
  color: #fff;
  font:
    500 10px/1.4 "DM Mono",
    monospace;
  letter-spacing: 0.08em;
  transform: rotate(-7deg);
}
.signal-band {
  border-block: 1px solid var(--line);
}
.signal-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 23px 0;
  color: #727775;
  font:
    11px "DM Mono",
    monospace;
}
.signal-grid span + span {
  border-left: 1px solid var(--line);
  padding-left: 28px;
}
.features {
  padding: 150px 0;
}
.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 64px;
}
.section-heading h2 {
  font-size: clamp(40px, 5vw, 64px);
  margin: 0;
}
.section-heading > p:last-child {
  max-width: 270px;
  color: var(--muted);
  font-size: 14px;
}
.feature-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 12px;
}
.feature {
  min-height: 245px;
  padding: 27px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.feature-wide {
  grid-column: 1/-1;
  min-height: 210px;
  flex-direction: row;
}
.feature-index {
  font:
    11px "DM Mono",
    monospace;
  color: var(--blue);
}
.feature h3 {
  font-size: 20px;
  letter-spacing: -0.04em;
  margin: 0 0 9px;
}
.feature p {
  max-width: 375px;
  color: var(--muted);
  font-size: 13px;
  margin: 0;
}
.feature-mark,
.feature-arrow {
  font-size: 40px;
  color: var(--blue);
  align-self: flex-end;
}
.feature-dark {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}
.feature-dark p {
  color: #a9afad;
}
.workflow {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 100px;
  align-items: center;
  padding: 30px 0 160px;
}
.workflow-art {
  position: relative;
  aspect-ratio: 1.58/1;
  overflow: hidden;
  border-radius: var(--radius);
}
.workflow-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.2);
}
.workflow-art:after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(18, 26, 26, 0.2);
}
.workflow-art span {
  position: absolute;
  left: 25px;
  bottom: 23px;
  z-index: 1;
  color: #fff;
  font:
    11px/1.6 "DM Mono",
    monospace;
}
.workflow-copy h2 {
  font-size: clamp(40px, 5vw, 62px);
}
.workflow-copy ol {
  list-style: none;
  padding: 0;
  margin: 38px 0 0;
}
.workflow-copy li {
  display: grid;
  grid-template-columns: 45px 1fr;
  gap: 12px;
  padding: 17px 0;
  border-top: 1px solid var(--line);
  font-size: 13px;
}
.workflow-copy li b {
  font:
    11px "DM Mono",
    monospace;
  color: var(--blue);
}
.workflow-copy li span {
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--muted);
}
.workflow-copy strong {
  color: var(--ink);
}
.help {
  padding: 145px 0;
}
.help-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 100px;
}
.help-search label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 12px;
}
.help-search input {
  width: 100%;
  height: 48px;
  padding: 0 15px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  outline: none;
}
.help-search input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(52, 120, 246, 0.12);
}
.help-search p {
  color: var(--muted);
  font-size: 12px;
}
.faq-list details {
  padding: 19px 0;
  border-top: 1px solid var(--line);
}
.faq-list summary {
  display: flex;
  justify-content: space-between;
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
}
.faq-list summary span {
  font-size: 20px;
  font-weight: 400;
  color: var(--blue);
}
.faq-list details[open] summary span {
  transform: rotate(45deg);
}
.faq-list details p {
  max-width: 600px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
  margin: 14px 0 0;
}
.download {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  padding: 70px 56px;
  margin-bottom: 100px;
  background: var(--blue);
  color: #fff;
  border-radius: var(--radius);
}
.download .eyebrow {
  color: #bcd2ff;
}
.download h2 {
  font-size: clamp(38px, 4.5vw, 58px);
  margin-bottom: 17px;
}
.download p:last-child {
  margin: 0;
  color: #d8e5ff;
  font-size: 14px;
}
.site-footer {
  display: flex;
  align-items: center;
  gap: 35px;
  padding: 28px 0 42px;
  border-top: 1px solid var(--line);
  color: #8b918f;
  font-size: 11px;
}
.site-footer .brand {
  color: var(--ink);
  margin-right: auto;
  font-size: 14px;
}
.site-footer .brand img {
  width: 24px;
  height: 24px;
}
.site-footer p {
  margin: 0;
}
.site-footer > span {
  font:
    11px "DM Mono",
    monospace;
}
@media (max-width: 800px) {
  .visual-stamp {
    right: 0;
    transform: none;
  }
  .section-shell,
  .site-header {
    width: min(100% - 32px, 600px);
  }
  .site-header {
    height: 65px;
  }
  .desktop-nav,
  .header-download {
    display: none;
  }
  .menu-button {
    display: block;
    margin-left: auto;
  }
  .hero {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 50px;
    padding: 57px 0 70px;
  }
  .hero h1 {
    font-size: 56px;
  }
  .hero-visual {
    max-width: 520px;
    margin: auto;
    width: 100%;
  }
  .signal-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }
  .signal-grid span + span {
    border-left: 0;
    padding-left: 0;
  }
  .features,
  .help {
    padding: 92px 0;
  }
  .section-heading {
    display: block;
    margin-bottom: 40px;
  }
  .section-heading > p:last-child {
    margin-top: 24px;
  }
  .feature-layout {
    display: block;
  }
  .feature {
    margin-bottom: 12px;
    min-height: 210px;
  }
  .feature-wide {
    min-height: 220px;
    display: flex;
  }
  .workflow {
    display: flex;
    flex-direction: column;
    gap: 54px;
    padding-bottom: 100px;
  }
  .workflow-copy {
    width: 100%;
  }
  .help-layout {
    display: block;
  }
  .help-search {
    margin-bottom: 48px;
  }
  .download {
    display: block;
    padding: 40px 25px;
    margin-bottom: 65px;
  }
  .download .button {
    margin-top: 30px;
  }
  .site-footer {
    flex-wrap: wrap;
    gap: 12px;
  }
  .site-footer p {
    order: 3;
    width: 100%;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}
@media (max-width: 800px) {
  .mobile-open {
    display: flex !important;
    position: absolute;
    top: 65px;
    left: 16px;
    right: 16px;
    z-index: 10;
    flex-direction: column;
    gap: 0;
    padding: 8px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 7px;
    box-shadow: 0 12px 30px rgba(23, 24, 25, 0.12);
  }
  .mobile-open a {
    padding: 12px;
  }
}