:root {
  --navy: #123D6A;
  --deep: #0B2D50;
  --blue: #2166A8;
  --sky: #BDEAFF;
  --paper: #F5F9FC;
  --white: #FFFFFF;
  --ink: #15324D;
  --muted: #526A7F;
  --line: #CADCE9;
  --radius: 20px;
  --max-width: 1180px;
  --gutter: clamp(22px, 5vw, 64px);
  --font: "Avenir Next", Avenir, "Segoe UI", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.65 var(--font); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { line-height: 1.12; letter-spacing: -.045em; }
address { font-style: normal; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--blue); outline-offset: 5px; }
::selection { background: var(--sky); color: var(--deep); }
.wrap { max-width: var(--max-width); padding-inline: var(--gutter); margin-inline: auto; }
.skip-link { position: absolute; top: -90px; left: 22px; padding: 12px 20px; background: var(--white); z-index: 10; }
.skip-link:focus { top: 12px; }
.header { position: relative; background: var(--white); border-bottom: 1px solid var(--line); z-index: 5; }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; min-height: 88px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-size: 19px; font-weight: 800; letter-spacing: -.045em; white-space: nowrap; }
.brand img { width: 38px; height: 38px; }
.nav { display: flex; gap: 30px; align-items: center; font-size: 14px; font-weight: 600; }
.nav a { padding-block: 8px; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--blue); text-decoration: underline; text-underline-offset: 7px; }
.menu-toggle { display: none; padding: 8px 14px; border: 1px solid var(--line); border-radius: 8px; background: var(--white); color: var(--navy); cursor: pointer; }
.hero { background: var(--navy); color: var(--white); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 70px; align-items: center; padding-block: clamp(70px, 9vw, 120px); }
.hero-location { color: var(--sky); font-size: 15px; margin-bottom: 22px; }
.hero h1 { font-size: clamp(54px, 7vw, 90px); font-weight: 650; }
.hero h1 span { display: block; }
.hero .lead { max-width: 31em; color: #DFEBF5; margin-top: 26px; font-size: 18px; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 10px; min-height: 48px; border-radius: 8px; padding: 12px 22px; background: var(--navy); color: var(--white); font-size: 14px; font-weight: 700; border: 1px solid transparent; }
.button:hover { background: var(--deep); }
.hero .button { background: var(--sky); color: var(--deep); }
.hero .button:hover { background: var(--white); }
.button-secondary, .hero .button-secondary { background: transparent; color: inherit; border-color: currentColor; }
.button-secondary:hover { background: #E5F0F8; }
.hero .button-secondary:hover { background: #24517D; }




.section { padding-block: clamp(64px, 8vw, 100px); }
.section-title { font-size: clamp(32px, 4.2vw, 48px); max-width: 16ch; }
.section-lead { color: var(--muted); max-width: 48em; margin-top: 22px; font-size: 18px; }
.company-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 64px; }
.company-copy p { color: var(--muted); margin-top: 20px; }
.company-copy .full-name { color: var(--ink); font-weight: 700; font-size: 20px; margin-top: 0; }
.facts { margin: 32px 0 0; }
.fact { display: grid; grid-template-columns: 140px 1fr; padding-block: 17px; gap: 20px; border-top: 1px solid var(--line); }
.fact dt { color: var(--muted); }
.fact dd { margin: 0; overflow-wrap: anywhere; }
.fact a { color: var(--blue); text-decoration: underline; text-underline-offset: 4px; }
.contact-band { background: #E2EEF7; }
.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.contact-list { display: grid; gap: 25px; }
.contact-method { padding-bottom: 25px; border-bottom: 1px solid #B9D0E2; }
.contact-method h3 { font-size: 15px; letter-spacing: 0; font-weight: 500; color: var(--muted); margin-bottom: 8px; }
.contact-method a, .contact-method address { font-size: clamp(19px, 2.2vw, 26px); letter-spacing: -.025em; font-weight: 600; overflow-wrap: anywhere; }
.contact-method a:hover { color: var(--blue); text-decoration: underline; text-underline-offset: 5px; }
.info-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin-top: 36px; }
.info-link { display: block; border-top: 2px solid var(--navy); padding-top: 22px; }
.info-link h3 { font-size: 22px; }
.info-link p { color: var(--muted); margin-top: 12px; }
.info-link span { display: inline-block; color: var(--blue); margin-top: 20px; font-size: 14px; font-weight: 700; text-decoration: underline; text-underline-offset: 4px; }
.info-link:hover span { color: var(--deep); }
.footer { padding-block: 42px 24px; background: var(--deep); color: var(--white); }
.footer-top { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.footer p, .footer address { margin-top: 14px; color: #BED1E2; font-size: 14px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: flex-end; font-size: 14px; }
.footer-links a:hover { text-decoration: underline; text-underline-offset: 5px; }
.footer-bottom { padding-top: 24px; margin-top: 36px; border-top: 1px solid #31536F; font-size: 12px; color: #BED1E2; display: flex; justify-content: space-between; gap: 20px; }
.page-heading { padding-block: 70px 48px; }
.page-heading h1 { font-size: clamp(40px, 5vw, 64px); }
.page-heading p { color: var(--muted); max-width: 48em; margin-top: 20px; }
.page-heading .updated { font-size: 14px; }
.document { max-width: 780px; margin-inline: auto; padding-bottom: 84px; }
.document h2 { font-size: 25px; margin: 34px 0 16px; }
.document p, .document ul { margin-block: 16px; }
.document ul { padding-left: 22px; }
.document a { color: var(--blue); text-decoration: underline; text-underline-offset: 4px; overflow-wrap: anywhere; }
.document address { padding: 24px; background: #E2EEF7; border-radius: 12px; }
.faq { max-width: 800px; margin-top: 36px; }
.faq details { border-top: 1px solid var(--line); padding-block: 20px; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { font-weight: 650; cursor: pointer; font-size: 18px; }
.faq details p { margin-top: 16px; color: var(--muted); }
.faq a { color: var(--blue); text-decoration: underline; }
.note { font-size: 14px; color: var(--muted); margin-top: 24px; }
@media (max-width: 850px) {
  .hero-grid { gap: 24px; }


  .company-layout, .contact-layout { gap: 36px; }
  .nav { gap: 20px; }
}
@media (max-width: 680px) {
  .header-inner { min-height: 76px; gap: 16px; }
  .brand { font-size: 17px; }
  .brand img { width: 32px; height: 32px; }
  .menu-toggle { display: block; }
  .js .nav { display: none; }
  .js .nav.is-open { display: flex; }
  .nav { position: absolute; left: 0; right: 0; top: 100%; background: var(--white); border-bottom: 1px solid var(--line); padding: 18px var(--gutter); flex-direction: column; align-items: stretch; gap: 12px; }
  html:not(.js) .header-inner { flex-wrap: wrap; padding-block: 18px; }
  html:not(.js) .nav { position: static; flex-basis: 100%; padding: 0; border: 0; }
  html:not(.js) .menu-toggle { display: none; }
  .hero-grid, .company-layout, .contact-layout, .footer-top { grid-template-columns: 1fr; }
  .hero-grid { padding-block: 58px 40px; }
  .hero h1 { font-size: clamp(48px, 14vw, 72px); }



  .company-layout { gap: 30px; }
  .info-links { grid-template-columns: 1fr; gap: 32px; }
  .footer-links { justify-content: flex-start; }
  .footer-bottom { flex-direction: column; gap: 8px; }
  .fact { grid-template-columns: 1fr; gap: 4px; }
  .page-heading { padding-block: 50px 32px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

.hero a:focus-visible, .footer a:focus-visible { outline-color: var(--sky); }

/* ---------- 筹备中的 AI 内容创作应用 ---------- */
.hero .app-headline { font-size: clamp(46px, 5.2vw, 72px); max-width: 12ch; text-transform: none; }
.hero-status { color: #BED7EB; margin-top: 22px; font-size: 13px; }
.app-concept { margin: 0; background: var(--white); color: var(--ink); border-radius: 28px; padding: 14px; max-width: 350px; width: 100%; justify-self: center; box-shadow: 0 24px 64px #071F3B55; }
.concept-top { display: flex; align-items: center; gap: 10px; font-size: 13px; font-weight: 700; padding: 4px 4px 14px; }
.concept-top img { width: 28px; height: 28px; }
.concept-image { position: relative; border-radius: 16px; overflow: hidden; }
.concept-image img { width: 100%; height: 310px; object-fit: cover; }
.concept-image > span { position: absolute; bottom: 0; left: 0; right: 0; color: var(--white); font-size: 14px; font-weight: 700; padding: 40px 16px 16px; background: linear-gradient(transparent, #0B2D50D9); }
.concept-prompt { background: var(--paper); padding: 14px; margin-top: 12px; border-radius: 12px; font-size: 13px; }
.concept-prompt > span { color: var(--muted); font-size: 11px; }
.concept-prompt p { margin-top: 4px; }
.app-concept figcaption { font-size: 11px; color: var(--muted); text-align: center; padding: 12px 0 2px; }
.product-heading { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; margin-bottom: 40px; }
.product-heading .section-lead { margin: 0; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.feature > img { width: 100%; height: 290px; object-fit: cover; object-position: center 25%; }
.feature > div { padding: 24px; }
.feature h3 { font-size: 23px; }
.feature p { color: var(--muted); font-size: 15px; margin-top: 14px; }
.comparison-section { background: #E2EEF7; }
.comparison-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.comparison { --split: 50%; position: relative; width: min(100%, 420px); aspect-ratio: 4 / 5; overflow: hidden; border-radius: var(--radius); justify-self: center; background: var(--navy); }
.comparison > img, .comparison-before, .comparison-before img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.comparison-before { clip-path: inset(0 calc(100% - var(--split)) 0 0); }
.comparison-range { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: ew-resize; z-index: 3; touch-action: pan-y; }
.comparison:focus-within { outline: 3px solid var(--blue); outline-offset: 5px; }
.comparison-divider { position: absolute; top: 0; bottom: 0; left: var(--split); width: 2px; background: var(--white); pointer-events: none; transform: translateX(-50%); }
.comparison-divider > span { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; background: var(--white); color: var(--navy); font-size: 23px; }
.comparison-label { position: absolute; top: 14px; padding: 5px 12px; background: #0B2D50D9; color: var(--white); border-radius: 20px; font-size: 12px; }
.before-label { left: 14px; }
.after-label { right: 14px; }
.comparison-picks { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.comparison-pick { border: 1px solid var(--navy); border-radius: 24px; padding: 9px 16px; background: transparent; color: var(--navy); font: inherit; font-size: 14px; cursor: pointer; }
.comparison-pick.is-selected { color: var(--white); background: var(--navy); }
.workflow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 40px; }
.workflow article { border-top: 1px solid var(--line); padding-top: 24px; }
.workflow article > span { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--navy); color: var(--white); font-size: 14px; font-weight: 700; margin-bottom: 18px; }
.workflow h3 { font-size: 22px; }
.workflow p { color: var(--muted); margin-top: 14px; font-size: 15px; }
.launch-band { background: var(--deep); color: var(--white); }
.launch-layout { display: grid; grid-template-columns: 1.15fr .85fr; gap: 80px; align-items: center; }
.launch-layout .section-title { max-width: 20ch; }
.launch-label { font-size: 14px; color: var(--sky); margin-bottom: 18px; }
.launch-layout .section-lead { color: #BED7EB; }
.launch-details h3 { font-size: 24px; }
.launch-details ul { margin: 20px 0 28px; padding-left: 20px; color: #BED7EB; }
.launch-details li + li { margin-top: 10px; }
.launch-details .button { background: var(--sky); color: var(--deep); }
.launch-band a:focus-visible { outline-color: var(--sky); }
@media (max-width: 850px) {
  .hero-grid { gap: 32px; }
  .feature-grid { gap: 16px; }
  .feature > div { padding: 20px; }
  .feature > img { height: 230px; }
  .comparison-layout, .launch-layout { gap: 32px; }
  .product-heading { gap: 32px; }
}
@media (max-width: 680px) {
  .hero .app-headline { font-size: clamp(44px, 11vw, 64px); max-width: 13ch; }
  .app-concept { margin-top: 20px; }
  .concept-image img { height: 300px; }
  .product-heading, .feature-grid, .comparison-layout, .workflow, .launch-layout { grid-template-columns: 1fr; }
  .feature > img { height: 300px; }
  .product-heading { gap: 22px; }
  .workflow { gap: 30px; }
  .comparison-layout { gap: 36px; }
}