:root {
  color-scheme: light; --ink: #1d1d1f; --muted: #626267; --subtle: #6e6e73; --link: #0066cc; --action: #0066cc;
  --action-hover: #0057b8; --surface: #f1f2ef; --line: #dedee2; --white: #fafaf8;
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --content-width: 1160px; --reading-width: 760px; --gutter: clamp(20px, 4vw, 40px); font-family: var(--font-sans);
  color: var(--ink); background: var(--white); font-synthesis: none; text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  min-width: 320px; scroll-behavior: smooth; scroll-padding-top: 24px;
}

body {
  min-width: 320px; margin: 0; color: var(--ink); background: var(--white); font-size: 16px; line-height: 1.8;
  overflow-wrap: anywhere;
}

button, input, textarea, select {
  font: inherit;
}

a {
  color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 0.18em;
}

a:hover {
  color: var(--action-hover);
}

a:focus-visible, button:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--action); outline-offset: 3px; border-radius: 4px;
}

::selection {
  color: var(--ink); background: #cfe5ff;
}

.skip-link {
  position: absolute; z-index: 10; top: 10px; left: 10px; padding: 8px 14px; transform: translateY(-150%);
  border-radius: 4px; color: var(--white); background: var(--ink); text-decoration: none;
}

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

.container {
  width: min(var(--content-width), calc(100% - var(--gutter) * 2)); margin-inline: auto;
}

.reading {
  width: min(var(--reading-width), calc(100% - var(--gutter) * 2)); margin-inline: auto;
}

.site-header {
  position: relative; z-index: 1; background: var(--white);
}

.header-inner {
  min-height: 80px; display: flex; align-items: center; justify-content: space-between; gap: 20px 32px;
}

.wordmark {
  flex: 0 1 auto; color: var(--ink); font-size: 20px; font-weight: 620; line-height: 1.4; letter-spacing: -0.025em;
  text-decoration: none;
}

.wordmark:hover {
  color: var(--ink);
}

.site-nav, .footer-nav {
  display: flex; align-items: center; flex-wrap: wrap; gap: 2px 18px;
}

.site-nav a, .footer-nav a {
  display: inline-flex; min-height: 44px; align-items: center; justify-content: center; color: var(--muted);
  font-size: 15px; line-height: 1.4; text-decoration: none; transition: color 140ms ease;
}

.site-nav a:hover, .footer-nav a:hover, .site-nav a[aria-current="page"] {
  color: var(--ink);
}

.site-nav a[aria-current="page"] {
  font-weight: 600;
}

main {
  display: block;
}

.company-hero {
  background: var(--white);
}

.company-hero__layout {
  min-height: 350px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start;
  gap: clamp(44px, 7vw, 88px); padding-block: 76px 64px;
}

.company-hero h1 {
  margin: 0; color: var(--ink); font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  font-size: clamp(44px, 4.4vw, 62px); font-weight: 600; line-height: 1.25; letter-spacing: -0.02em;
}

.company-hero__copy {
  padding-top: 3px;
}

.company-hero__intro {
  max-width: 650px; margin: 0 0 12px; color: var(--muted); font-size: 18px; line-height: 1.85;
}

.company-hero__intro strong { color: var(--ink); font-weight: 550; }

.home-products { background: #fff; }
.home-products > .container > .section-head { margin-bottom: 38px; }
.product-case {
  display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.35fr); align-items: center;
  gap: clamp(32px, 5vw, 68px);
}
.product-case__copy h3 {
  margin: 0; font-size: 34px; font-weight: 620; line-height: 1.35; letter-spacing: -0.025em;
}
.product-case__copy p { margin: 18px 0; color: var(--muted); font-size: 16px; line-height: 1.8; }
.product-case__copy .product-case__position { margin-top: 10px; color: var(--ink); font-size: 19px; }
.product-case__copy .feature-list { grid-template-columns: minmax(0, 1fr); margin-top: 22px; }
.product-case__copy .feature-list > li { border: 0; padding: 4px 0; color: var(--muted); font-size: 15px; }
.product-case__links { display: flex; gap: 5px 22px; flex-wrap: wrap; margin-top: 22px; }
.product-case__media { min-width: 0; margin: 0; }
.screenshot-link { display: block; background: #f0f1f3; padding: 18px; text-decoration: none; }
.screenshot-link img { display: block; width: 100%; height: auto; }
.product-case__media figcaption { margin-top: 12px; color: var(--muted); font-size: 13px; line-height: 1.7; }
.home-about { display: grid; grid-template-columns: minmax(180px, 0.6fr) minmax(0, 1.4fr); gap: 48px; }
.home-about__body p { margin: 0 0 18px; color: var(--muted); font-size: 18px; line-height: 1.9; }
.home-contact__links { display: flex; align-items: flex-start; flex-direction: column; }

.actions {
  display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-top: 20px;
}

.button {
  display: inline-flex; min-height: 44px; align-items: center; justify-content: center; gap: 7px; padding: 9px 17px;
  border: 1px solid transparent; border-radius: 5px; font-size: 15px; font-weight: 560; line-height: 1.5;
  text-align: center; text-decoration: none; transition: background-color 140ms ease, color 140ms ease;
}

.button:hover {
  text-decoration: none;
}

.button--primary {
  color: var(--white); background: var(--action);
}

.button--primary:hover {
  color: var(--white); background: var(--action-hover);
}

.button--secondary {
  color: var(--ink); background: #e9e9ed;
}

.button--secondary:hover {
  color: var(--ink); background: #dedee2;
}

.text-link {
  display: inline-flex; min-height: 44px; align-items: center; gap: 6px; font-weight: 550; text-decoration: none;
}

.text-link:hover {
  text-decoration: underline; text-underline-offset: 0.2em;
}

.icon {
  width: 1em; height: 1em; flex: 0 0 auto; vertical-align: middle;
}







.section {
  padding-block: clamp(56px, 6vw, 72px);
}

.section--alt {
  background: var(--surface);
}


.section-head {
  max-width: 720px; margin-bottom: 28px;
}

.section-head h2, .section > .reading > h2, .section > .container > h2 {
  margin: 0; color: var(--ink); font-size: clamp(26px, 2.4vw, 32px); font-weight: 620; line-height: 1.35;
  letter-spacing: -0.025em; text-wrap: balance;
}

.section-head p, .section > .reading > p, .section > .container > p, .lead {
  max-width: 700px; margin: 12px 0 0; color: var(--muted); font-size: 16px; line-height: 1.8;
}

.section > .reading > p + h2, .section > .container > p + h2 {
  margin-top: 28px;
}

.section-head .text-link {
  margin-top: 10px;
}







.feature-list {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 30px; margin: 0; padding: 0;
  list-style: none;
}

.feature-list > li {
  min-width: 0; padding: 10px 0; border-top: 1px solid var(--line); color: var(--ink); font-size: 15px; line-height: 1.65;
}

.editorial-list {
  margin: 0; padding: 0; border-top: 1px solid var(--line);
}

.editorial-list > div, .editorial-list > li {
  display: grid; grid-template-columns: minmax(190px, 0.72fr) minmax(0, 1.6fr); gap: 20px 44px; padding: 19px 0;
  border-bottom: 1px solid var(--line);
}

.editorial-list dt, .editorial-list h3 {
  margin: 0; color: var(--ink); font-size: 18px; font-weight: 600; line-height: 1.5;
}

.editorial-list dd, .editorial-list p {
  margin: 0; color: var(--muted); line-height: 1.75;
}

.principles {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px 36px; margin: 0; padding: 0; list-style: none;
}

.principles > div, .principles > li {
  padding-top: 15px; border-top: 1px solid var(--line);
}

.principles h3 {
  margin: 0; color: var(--ink); font-size: 18px; font-weight: 600; line-height: 1.5;
}

.principles p {
  margin: 7px 0 0; color: var(--muted); line-height: 1.75;
}

.contact-band {
  display: flex; align-items: center; justify-content: space-between; gap: 22px 36px; padding-block: 22px;
  border-block: 1px solid var(--line);
}

.contact-band h2, .contact-band h3 {
  margin: 0; color: var(--ink); font-size: 25px; font-weight: 620; line-height: 1.4;
}

.contact-band p {
  max-width: 620px; margin: 7px 0 0; color: var(--muted);
}

.contact-band > a {
  flex: 0 0 auto;
}

.page-intro {
  padding-block: 54px 28px;
}

.page-intro h1 {
  max-width: 780px; margin: 0; color: var(--ink); font-size: clamp(34px, 3.3vw, 40px); font-weight: 640; line-height: 1.3;
  letter-spacing: -0.03em; text-wrap: balance;
}

.page-intro p {
  max-width: 700px; margin: 14px 0 0; color: var(--muted); font-size: 16px; line-height: 1.8;
}

.page-intro .lead {
  font-size: 17px;
}

.page-intro .muted, .muted {
  color: var(--muted);
}

.product-feature {
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(250px, 0.85fr); align-items: center;
  gap: clamp(36px, 6vw, 76px);
}

.product-feature__copy {
  min-width: 0;
}

.product-feature__copy .section-head {
  margin-bottom: 21px;
}

.product-feature__copy h3 {
  margin: 24px 0 4px; color: var(--ink); font-size: 18px; font-weight: 600; line-height: 1.5;
}

.product-feature__copy .feature-list {
  grid-template-columns: minmax(0, 1fr);
}

.product-feature__copy .text-link {
  margin-top: 8px;
}

.product-flow {
  margin: 0; padding: 0; list-style: none;
}

.product-flow__item {
  display: grid; grid-template-columns: 76px minmax(0, 1fr); align-items: center; gap: 12px 18px; min-height: 64px;
  padding: 13px 0; border-top: 1px solid var(--line);
}

.product-flow__item:last-child {
  border-bottom: 1px solid var(--line);
}

.product-flow__item strong {
  color: var(--ink); font-size: 17px; font-weight: 600;
}

.product-flow__item span {
  min-width: 0; color: var(--muted); font-size: 15px; line-height: 1.65;
}

.contact-list {
  margin: 0; padding: 0; border-top: 1px solid var(--line);
}

.contact-row {
  display: grid; grid-template-columns: minmax(170px, 0.65fr) minmax(0, 1.5fr); align-items: baseline; gap: 13px 36px;
  padding: 19px 0; border-bottom: 1px solid var(--line);
}

.contact-row dt, .contact-row h2, .contact-row h3 {
  margin: 0; color: var(--ink); font-size: 17px; font-weight: 600; line-height: 1.55;
}

.contact-row dd, .contact-row p {
  min-width: 0; margin: 0; color: var(--muted); line-height: 1.7;
}

.contact-row dd > p {
  margin-bottom: 4px;
}

.contact-row a, .legal a, .footer-company a {
  overflow-wrap: anywhere;
}

.legal {
  color: var(--muted); line-height: 1.85;
}

.legal > * + * {
  margin-top: 1em;
}

.legal h2 {
  margin: 1.9em 0 0.55em; color: var(--ink); font-size: 26px; font-weight: 620; line-height: 1.45;
}

.legal h3 {
  margin: 1.5em 0 0.4em; color: var(--ink); font-size: 18px; font-weight: 600; line-height: 1.5;
}

.legal p, .legal ul, .legal ol {
  margin: 0.85em 0 0;
}

.legal li + li {
  margin-top: 0.4em;
}

.notice {
  margin-block: 20px; padding: 15px 18px; color: var(--muted);
  background: var(--surface); line-height: 1.7;
}

.not-found {
  padding-block: 72px 84px;
}

.not-found h1 {
  margin: 0; color: var(--ink); font-size: clamp(34px, 3.3vw, 40px); font-weight: 640; line-height: 1.3;
  letter-spacing: -0.03em;
}

.not-found p {
  max-width: 580px; margin: 12px 0 0; color: var(--muted);
}

.not-found .button {
  margin-top: 18px;
}

.site-footer {
  padding-block: 34px 20px; background: var(--surface);
}

.footer-top {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 24px 48px; padding-bottom: 24px;
}

.footer-company {
  max-width: 440px;
}

.footer-company p {
  margin: 0; color: var(--ink); font-size: 15px; font-weight: 600; line-height: 1.6;
}

.footer-company a {
  display: inline-block; margin-top: 5px; font-size: 14px;
}

.footer-nav {
  justify-content: flex-end; gap: 2px 20px;
}

.footer-nav a {
  font-size: 14px;
}

.footer-bottom {
  display: flex; justify-content: space-between; gap: 12px 24px; padding-top: 15px; border-top: 1px solid var(--line);
  color: var(--muted); font-size: 13px; line-height: 1.6;
}

.footer-bottom p {
  margin: 0;
}

@media (max-width: 820px) {
  .company-hero__layout {
    min-height: 0; grid-template-columns: minmax(0, 1fr); gap: 28px; padding-block: 48px;
  }

  .company-hero h1 {
    font-size: clamp(40px, 6vw, 48px);
  }




  .product-feature {
    grid-template-columns: minmax(0, 1fr); gap: 30px;
  }

  .principles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  :root {
    --gutter: 22px;
  }

  .header-inner {
    min-height: 0; align-items: flex-start; flex-direction: column; gap: 6px; padding-block: 14px 10px;
  }

  .wordmark {
    max-width: 100%; font-size: 18px;
  }

  .site-nav {
    width: 100%; gap: 0 17px;
  }

  .site-nav a {
    font-size: 14px;
  }

  .company-hero__layout {
    gap: 26px; padding-block: 40px;
  }

  .company-hero h1 {
    font-size: clamp(38px, 7.8vw, 44px);
  }

  .company-hero__intro {
    font-size: 17px;
  }

  .section {
    padding-block: 48px;
  }

  .section-head {
    margin-bottom: 22px;
  }

  .section-head p, .lead {
    font-size: 16px;
  }

  .feature-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .editorial-list > div, .editorial-list > li {
    grid-template-columns: minmax(0, 1fr); gap: 5px; padding-block: 16px;
  }

  .principles {
    grid-template-columns: minmax(0, 1fr); gap: 19px;
  }

  .contact-band {
    align-items: flex-start; flex-direction: column; gap: 12px;
  }

  .page-intro {
    padding-block: 42px 22px;
  }

  .page-intro h1, .not-found h1 {
    font-size: clamp(30px, 7.5vw, 36px);
  }

  .page-intro p {
    font-size: 16px;
  }

  .contact-row {
    grid-template-columns: minmax(0, 1fr); gap: 5px; padding-block: 16px;
  }

  .not-found {
    padding-block: 64px 72px;
  }

  .footer-top {
    flex-direction: column; gap: 13px; padding-bottom: 18px;
  }

  .footer-nav {
    justify-content: flex-start; gap: 0 18px;
  }
}

@media (max-width: 380px) {
  :root {
    --gutter: 18px;
  }

  .site-nav {
    gap: 0 13px;
  }


  .actions {
    gap: 8px;
  }

  .button {
    padding-inline: 13px;
  }

  .footer-nav {
    gap: 0 12px;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

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

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

@media (max-width: 960px) {
  .product-case { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .product-case__copy { max-width: 680px; }
  .product-case__copy .feature-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .home-about { grid-template-columns: minmax(0, 1fr); gap: 10px; }
}
@media (max-width: 760px) {
  .company-hero__layout { gap: 28px; padding-block: 42px 44px; }
  .product-case__copy h3 { font-size: 30px; }
  .product-case__copy .feature-list { grid-template-columns: minmax(0, 1fr); }
  .screenshot-link { padding: 8px; }
  .home-about__body p { font-size: 17px; }
  .home-products > .container > .section-head { margin-bottom: 28px; }
}