:root {
  --paper: #f2efe9;
  --paper-deep: #e9e4db;
  --ink: #1b1b19;
  --muted: #6d6a63;
  --faint: #817b72;
  --line: rgba(27, 27, 25, .15);
  --white: #fbfaf7;
  --blue: #7894a4;
  --blue-deep: #546f7e;
  --ui: "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  --display: "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
section[id] { scroll-margin-top: 88px; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--ui);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 72px;
  display: flex;
  align-items: center;
  gap: 40px;
  padding: 0 max(28px, calc((100vw - 1240px) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(242, 239, 233, .9);
  backdrop-filter: blur(18px);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-size: 14px; letter-spacing: .06em; white-space: nowrap; }
.brand img { width: 28px; height: 28px; object-fit: contain; }
.brand b { font-weight: 750; letter-spacing: .12em; }
.site-header nav { display: flex; gap: 30px; margin: auto; }
.site-header nav a { color: var(--muted); font-size: 13px; text-decoration: none; transition: color .18s; }
.site-header nav a:hover { color: var(--ink); }
.menu-toggle {
  width: 38px;
  height: 38px;
  padding: 0;
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(255,255,255,.28);
  color: var(--ink);
  cursor: pointer;
}
.menu-toggle span { width: 15px; height: 1px; background: currentColor; transition: transform .18s, opacity .18s; }
.menu-open .menu-toggle span:first-child { transform: translateY(6px) rotate(45deg); }
.menu-open .menu-toggle span:nth-child(2) { opacity: 0; }
.menu-open .menu-toggle span:last-child { transform: translateY(-6px) rotate(-45deg); }
.header-cta {
  padding: 10px 16px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-size: 12px;
  text-decoration: none;
  white-space: nowrap;
}
.header-cta:hover { background: var(--ink); color: var(--paper); }

main { overflow: hidden; }
.hero {
  max-width: 1240px;
  min-height: 720px;
  margin: 0 auto;
  padding: 82px 28px 66px;
  display: grid;
  grid-template-columns: minmax(380px, .84fr) minmax(560px, 1.16fr);
  align-items: center;
  gap: 58px;
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  color: var(--blue-deep);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
}
.eyebrow span { width: 28px; height: 1px; background: currentColor; }
h1, h2, h3, p { margin-top: 0; }
.hero h1 {
  margin-bottom: 28px;
  font-family: var(--display);
  font-size: clamp(44px, 4.8vw, 64px);
  font-weight: 650;
  line-height: 1.22;
  letter-spacing: -.035em;
}
.hero h1 em { color: var(--blue-deep); font-style: normal; }
.hero-copy > p {
  max-width: 510px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}
.hero-actions { display: flex; gap: 12px; margin: 34px 0 38px; }
.button {
  min-height: 46px;
  padding: 0 21px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  border: 1px solid var(--line);
  border-radius: 9px;
  font-size: 12px;
  text-decoration: none;
  transition: transform .16s, background .16s, color .16s;
}
.button:hover { transform: translateY(-1px); }
.button.primary { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.button.quiet { background: rgba(255,255,255,.32); }
.button.disabled { opacity: .42; pointer-events: none; }
.windows-download { gap: 9px; }
.windows-download svg { width: 14px; height: 14px; flex: none; fill: currentColor; }
.header-cta.windows-download { display: inline-flex; align-items: center; gap: 7px; }
.header-cta.windows-download svg { width: 12px; height: 12px; }
.hero-facts { display: flex; flex-wrap: wrap; gap: 9px 20px; color: var(--faint); font-size: 12.5px; }
.hero-facts span::before { content: "·"; margin-right: 8px; color: var(--blue); }

.hero-project-shot {
  min-width: 0;
  margin: 0;
  border: 1px solid rgba(27,27,25,.18);
  border-radius: 18px;
  background: #e9e4dc;
  box-shadow: 0 36px 85px rgba(56,47,37,.16);
  overflow: hidden;
}
.shot-window-bar {
  height: 42px;
  padding: 0 15px;
  display: flex;
  align-items: center;
  gap: 9px;
  border-bottom: 1px solid rgba(27,27,25,.12);
  background: rgba(255,255,255,.88);
  color: var(--ink);
  font-size: 10px;
  font-weight: 650;
}
.shot-window-bar i { width: 8px; height: 8px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 3px rgba(120,148,164,.14); }
.shot-window-bar small { margin-left: auto; color: var(--faint); font-size: 11px; font-weight: 400; }
.hero-project-shot img { display: block; width: 100%; height: auto; background: #f5f2ed; }
.hero-project-shot figcaption { padding: 11px 15px; border-top: 1px solid rgba(27,27,25,.1); background: #f8f6f2; color: var(--faint); font-size: 12px; }

.section { max-width: 1240px; margin: 0 auto; padding: 112px 28px; }
.section-head { display: grid; grid-template-columns: 1.4fr .6fr; align-items: start; gap: 70px; margin-bottom: 48px; }
.section-head > div { display: block; }
.section h2 { margin: 0; font-family: var(--display); font-size: clamp(28px, 3vw, 39px); font-weight: 650; letter-spacing: -.025em; }
.section-head > p { color: var(--muted); font-size: 14.5px; line-height: 1.8; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.feature {
  min-height: 236px;
  padding: 27px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255,255,255,.42);
}
.feature-icon {
  width: 34px;
  height: 34px;
  margin-bottom: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(84,111,126,.22);
  border-radius: 9px;
  background: rgba(120,148,164,.08);
  color: var(--blue-deep);
  font-size: 16px;
}
.feature-icon svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.65; stroke-linecap: round; stroke-linejoin: round; }
.feature h3 { margin: auto 0 10px; font-family: var(--display); font-size: 20px; font-weight: 650; }
.feature p { max-width: 520px; margin-bottom: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }

.workflow-showcase-section { padding-top: 54px; padding-bottom: 60px; }
.workflow-rows { border-top: 1px solid var(--line); }
.workflow-row {
  display: grid;
  grid-template-columns: minmax(240px,.68fr) minmax(0,1.32fr);
  align-items: center;
  gap: 56px;
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}
.workflow-tag {
  display: inline-flex;
  min-height: 28px;
  padding: 0 10px;
  align-items: center;
  border: 1px solid rgba(84,111,126,.25);
  border-radius: 999px;
  color: var(--blue-deep);
  font-size: 11px;
  font-weight: 650;
}
.workflow-copy h3 { margin: 17px 0 9px; font-size: 23px; font-weight: 650; }
.workflow-copy p { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.8; }
.workflow-points { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 15px; }
.workflow-points span { padding: 5px 8px; border-radius: 5px; background: rgba(120,148,164,.09); color: var(--muted); font-size: 11px; }
.workflow-graph {
  min-width: 0;
  padding: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background-color: rgba(255,255,255,.42);
  background-image: radial-gradient(rgba(70,65,58,.13) .65px, transparent .65px);
  background-size: 19px 19px;
}
.graph-node {
  min-width: 128px;
  min-height: 70px;
  padding: 11px 12px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(255,255,255,.94);
  box-shadow: 0 7px 17px rgba(50,44,37,.06);
}
.graph-node b { font-size: 12.5px; font-weight: 650; }
.graph-node small { margin-top: 4px; color: var(--muted); font-size: 10.5px; line-height: 1.45; }
.graph-node.generator { min-width: 154px; border-color: var(--ink); background: var(--ink); color: var(--paper); }
.graph-node.generator small { color: rgba(242,239,233,.62); }
.graph-node.result { border-color: rgba(84,111,126,.32); background: rgba(232,239,242,.92); }
.graph-node.mark { border-style: dashed; }
.graph-stack { min-width: 126px; display: grid; gap: 5px; }
.graph-stack span {
  min-height: 28px;
  padding: 0 9px;
  display: flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255,255,255,.9);
  color: var(--muted);
  font-size: 10.5px;
}
.graph-edge { width: 26px; height: 1px; flex: none; position: relative; background: rgba(84,111,126,.45); }
.graph-edge::after { content: ""; position: absolute; right: 0; top: -3px; width: 6px; height: 6px; border-top: 1px solid var(--blue-deep); border-right: 1px solid var(--blue-deep); transform: rotate(45deg); }

.project-gallery { padding-top: 54px; }
.gallery-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.gallery-grid figure { margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.4); }
.gallery-grid img { display: block; width: 100%; height: 360px; object-fit: cover; background: #f6f3ee; }
.gallery-grid figcaption { padding: 16px 18px 17px; border-top: 1px solid var(--line); }
.gallery-grid figcaption b, .gallery-grid figcaption span { display: block; }
.gallery-grid figcaption b { font-size: 13px; font-weight: 650; }
.gallery-grid figcaption b { font-size: 14px; }
.gallery-grid figcaption span { margin-top: 7px; color: var(--muted); font-size: 13.5px; line-height: 1.7; }

.local-band {
  padding: 75px max(28px, calc((100vw - 1184px) / 2));
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 80px;
  align-items: end;
  background: var(--ink);
  color: var(--paper);
}
.local-band h2 { margin: 16px 0 0; font-family: var(--display); font-size: clamp(28px,3vw,40px); font-weight: 650; }
.local-band h2 span { display: block; white-space: nowrap; }
.local-band > p { margin: 0; color: rgba(242,239,233,.72); font-size: 14.5px; line-height: 1.85; }

.download-section { padding-top: 96px; padding-bottom: 56px; }
.download-card {
  padding: 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 35px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255,255,255,.4);
}
.download-card h2 { margin: 10px 0 12px; font-family: var(--display); font-size: 31px; font-weight: 650; }
.release-meta { display: flex; flex-wrap: wrap; gap: 8px; }
.release-meta span { padding: 7px 10px; border: 1px solid var(--line); border-radius: 5px; color: var(--muted); font-size: 12px; }
.download-action { min-width: 245px; text-align: right; }
.download-action small { display: block; margin-top: 10px; color: var(--faint); font-size: 12px; line-height: 1.6; }
.copy-button { margin-top: 8px; border: 0; background: transparent; color: var(--blue-deep); font: 11.5px var(--ui); cursor: pointer; }
.checksum-row { min-height: 50px; padding: 0 8px; display: flex; align-items: center; gap: 12px; border-bottom: 1px solid var(--line); color: var(--faint); font-size: 12px; }
.checksum-row code { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); }
.checksum-row button { border: 0; background: transparent; color: var(--blue-deep); font: 11.5px var(--ui); cursor: pointer; }

.pricing-section { padding-top: 50px; }
.release-board {
  display: grid;
  grid-template-columns: .82fr 1.18fr;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: rgba(255,255,255,.38);
}
.release-intro {
  padding: 34px;
  background: var(--ink);
  color: var(--paper);
}
.release-live {
  display: inline-flex;
  min-height: 29px;
  padding: 0 10px;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(242,239,233,.2);
  border-radius: 999px;
  color: rgba(242,239,233,.72);
  font-size: 11px;
  font-weight: 600;
}
.release-live i { width: 6px; height: 6px; border-radius: 50%; background: #8fb49a; box-shadow: 0 0 0 4px rgba(143,180,154,.12); }
.release-intro h3 { max-width: 380px; margin: 32px 0 14px; font-size: 28px; font-weight: 650; line-height: 1.35; }
.release-intro p { max-width: 430px; margin: 0; color: rgba(242,239,233,.65); font-size: 13px; line-height: 1.85; }
.release-intro > a { display: inline-flex; margin-top: 27px; padding-bottom: 4px; gap: 8px; border-bottom: 1px solid rgba(242,239,233,.35); color: var(--paper); font-size: 12px; text-decoration: none; }
.release-roadmap {
  position: relative;
  margin: 0;
  padding: 32px 34px;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-content: center;
  gap: 0;
}
.release-roadmap::before { content: ""; position: absolute; left: 72px; right: 72px; top: 42px; height: 1px; background: var(--line); }
.release-roadmap li { position: relative; z-index: 1; padding: 0 13px; }
.release-roadmap li > span {
  min-height: 20px;
  padding-left: 28px;
  position: relative;
  display: flex;
  align-items: center;
  color: var(--muted);
  font-size: 11.5px;
  font-weight: 650;
}
.release-roadmap li > span::before {
  content: "";
  width: 16px;
  height: 16px;
  position: absolute;
  left: 0;
  top: 2px;
  border: 1px solid rgba(84,111,126,.34);
  border-radius: 50%;
  background: var(--paper);
}
.release-roadmap li.active > span { color: var(--ink); }
.release-roadmap li.active > span::before { border: 4px solid var(--blue-deep); }
.release-roadmap div { margin-top: 31px; }
.release-roadmap b { display: block; font-size: 15px; font-weight: 650; }
.release-roadmap p { margin: 8px 0 0; color: var(--muted); font-size: 12px; line-height: 1.75; }
.faq-section { padding-top: 60px; }
.faq-section details { border-top: 1px solid var(--line); }
.faq-section details:last-child { border-bottom: 1px solid var(--line); }
.faq-section summary { padding: 22px 34px 22px 0; position: relative; font-size: 14.5px; font-weight: 600; cursor: pointer; list-style: none; }
.faq-section summary::-webkit-details-marker { display: none; }
.faq-section summary::after { content: "+"; position: absolute; right: 6px; color: var(--faint); }
.faq-section details[open] summary::after { content: "−"; }
.faq-section details p { max-width: 760px; margin: 0 0 23px; color: var(--muted); font-size: 14px; line-height: 1.85; }

footer {
  padding: 42px max(28px, calc((100vw - 1184px) / 2));
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 35px;
  border-top: 1px solid var(--line);
}
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand img { width: 28px; height: 28px; }
.footer-brand b, .footer-brand span { display: block; }
.footer-brand b { font-size: 12px; }
.footer-brand span { margin-top: 4px; color: var(--faint); font-size: 11px; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--muted); font-size: 12px; text-decoration: none; }
footer small { color: var(--faint); font-size: 11.5px; }

.legal-page { max-width: 820px; margin: 0 auto; padding: 90px 28px 110px; }
.legal-page h1 { margin-bottom: 14px; font-family: var(--display); font-size: 42px; font-weight: 650; }
.legal-page h2 { margin: 38px 0 12px; font-size: 16px; }
.legal-page p, .legal-page li { color: var(--muted); font-size: 12px; line-height: 2; }
.legal-page a.back { display: inline-block; margin-bottom: 40px; color: var(--blue-deep); font-size: 11px; text-decoration: none; }

@media (max-width: 980px) {
  .site-header { justify-content: flex-start; gap: 12px; padding: 0 20px; }
  .site-header .brand { margin-right: auto; }
  .menu-toggle { display: inline-flex; flex: none; }
  .site-header nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin: 0;
    padding: 7px 20px 13px;
    display: none;
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--line);
    background: var(--paper);
    box-shadow: 0 18px 30px rgba(56,47,37,.08);
    backdrop-filter: blur(18px);
  }
  .menu-open nav { display: flex; }
  .site-header nav a { padding: 13px 4px; border-bottom: 1px solid rgba(27,27,25,.09); color: var(--ink); font-size: 14px; }
  .site-header nav a:last-child { border-bottom: 0; }
  .hero { grid-template-columns: 1fr; padding-top: 60px; }
  .hero-copy { max-width: 720px; }
  .section-head { grid-template-columns: 1fr; gap: 14px; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gallery-grid { grid-template-columns: 1fr; }
  .workflow-row { grid-template-columns: 1fr; gap: 24px; }
  .local-band { grid-template-columns: 1fr; gap: 28px; }
  footer { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .site-header { height: 62px; }
  .header-cta { padding: 9px 12px; }
  .hero { padding: 46px 18px 38px; min-height: auto; }
  .hero h1 { font-size: 43px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-project-shot { border-radius: 13px; }
  .shot-window-bar small { display: none; }
  .gallery-grid img { height: 300px; }
  .section { padding: 64px 18px; }
  .section-head > div { display: block; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature { min-height: 210px; }
  .workflow-graph { flex-direction: column; }
  .workflow-graph .graph-node { width: 100%; }
  .workflow-graph .graph-stack { width: 100%; grid-template-columns: 1fr 1fr; }
  .workflow-graph .graph-edge { width: 1px; height: 22px; }
  .workflow-graph .graph-edge::after { right: -3px; top: auto; bottom: 0; transform: rotate(135deg); }
  .release-board { grid-template-columns: 1fr; }
  .release-roadmap { grid-template-columns: 1fr; gap: 19px; padding: 27px 26px 30px; }
  .release-roadmap::before { display: none; }
  .release-roadmap li { display: block; padding: 0; }
  .release-roadmap li > span { margin-bottom: 9px; }
  .release-roadmap div { margin-top: 0; }
  .feature-icon { margin-bottom: 30px; }
  .local-band { padding: 58px 20px; }
  .download-card { align-items: flex-start; flex-direction: column; padding: 22px; }
  .download-action { width: 100%; min-width: 0; text-align: left; }
  .download-action .button { width: 100%; }
  .pricing-grid { grid-template-columns: 1fr; }
  .footer-links { flex-wrap: wrap; }
}

@media (max-width: 360px) {
  .site-header .header-cta { display: none; }
}