/* finesse · register=brand · A=porcelain+navy · B=restrained-Chinese-sans · C=single-product-gallery · D=no-engine · E=product-catalogue · SOUL=7 SPECTACLE=2 DENSITY=4 */
:root {
  --navy: #101c30; --night: #0c1626; --ink: #19283d; --muted: #606d7c;
  --pale: #f7f8fa; --white: #fcfdff; --surface: #edf0f5; --accent: #285dae;
  --blue-light: #a8c0e4; --dark-muted: #b7c2d2; --line: rgb(27 48 77 / 13%);
  --line-light: rgb(235 241 250 / 17%); --shadow: rgb(16 34 60 / 12%);
  --green: #53846c; --mock-ink: #34383f; --mock-muted: #737983;
  --mock-line: #e3e5e9; --mock-bg: #fafbfc; --cos-bg: #23262c;
  --cos-surface: #2c3038; --cos-ink: #e7eaf0; --cos-muted: #a7b0bf;
  --cos-line: rgb(216 225 245 / 12%);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --nav-h: 76px;
}
* { box-sizing: border-box; }
[hidden] { display: none!important; }
html { scroll-padding-top: calc(var(--nav-h) + 24px); overflow-x: clip; scrollbar-gutter: stable; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: var(--font); -webkit-font-smoothing: antialiased; overflow-x: clip; }
a { color: inherit; text-decoration: none; }
button { border: 0; font: inherit; color: inherit; cursor: pointer; }
a, button { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, [tabindex]:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; border-radius: 3px; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, h4, h5, h6, p, figure { margin: 0; }
h1, h2, h3 { overflow-wrap: anywhere; min-width: 0; }
ul, ol { list-style: none; margin: 0; padding: 0; }
::selection { background: var(--accent); color: var(--white); }
.container { width: min(1240px, calc(100% - 112px)); margin-inline: auto; }
.skip-link { position: fixed; top: -70px; left: 16px; z-index: 150; background: var(--white); padding: 14px 20px; }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 100; height: var(--nav-h); background: var(--navy); color: var(--white); }
.nav-wrap { width: min(1360px, calc(100% - 80px)); margin-inline: auto; height: 100%; display: flex; align-items: center; gap: 48px; }
.brand { display: flex; align-items: center; min-width: 0; }
.brand img { width: 176px; height: 45px; object-fit: contain; }
.desktop-nav { margin-left: auto; display: flex; align-items: center; gap: 38px; }
.desktop-nav a, .nav-contact { display: inline-flex; align-items: center; min-height: 44px; font-size: 13px; white-space: nowrap; }
.desktop-nav a { color: var(--dark-muted); }
.desktop-nav a:hover { color: var(--white); }
.nav-contact { gap: 24px; border-left: 1px solid var(--line-light); padding-left: 32px; }
.menu-toggle { display: none; width: 44px; height: 44px; background: transparent; }
.menu-toggle span { display: block; width: 22px; height: 1px; margin: 6px auto; background: var(--white); }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
.mobile-menu { position: absolute; top: var(--nav-h); inset-inline: 0; background: var(--navy); padding: 10px 24px 24px; }
.mobile-menu a { display: block; padding: 17px 0; border-top: 1px solid var(--line-light); font-size: 14px; }
.hero { background: var(--pale); padding-top: 100px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr); gap: 80px; align-items: end; padding-bottom: 75px; }
.company-name { color: var(--muted); font-size: 12px; letter-spacing: .09em; margin-bottom: 26px; }
h1 { font-size: clamp(43px, 4.55vw, 66px); letter-spacing: -.055em; line-height: 1.4; font-weight: 600; }
h1 span { color: inherit; }
.hero-description { padding-bottom: 8px; }
.hero-description p:first-child { font-size: 19px; line-height: 1.9; }
.hero-description p:nth-child(2) { font-size: 13px; line-height: 1.95; color: var(--muted); margin: 15px 0 26px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; min-height: 48px; padding: 0 21px; gap: 35px; border-radius: 3px; font-size: 13px; font-weight: 500; white-space: nowrap; }
.button-dark { background: var(--navy); color: var(--white); }
.text-link { display: inline-flex; align-items: center; gap: 22px; background: transparent; padding: 8px 0; min-height: 44px; border-bottom: 1px solid var(--ink); font-size: 13px; font-weight: 500; white-space: nowrap; }
.text-link:hover, .secondary-link:hover { color: var(--accent); }
.light-link { color: var(--white); border-color: var(--line-light); }
.light-link:hover { color: var(--blue-light); }
.secondary-link { color: var(--muted); font-size: 12px; display: inline-flex; align-items: center; min-height: 44px; white-space: nowrap; }
.hero-scope { display: flex; align-items: center; gap: 45px; border-top: 1px solid var(--line); padding-block: 24px; font-size: 12px; color: var(--muted); }
.hero-location { margin-left: auto; font-size: 11px; }
.products { padding: 72px 0 65px; }
.section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 30px; margin-bottom: 36px; }
h2 { font-size: clamp(26px, 2.45vw, 34px); line-height: 1.5; letter-spacing: -.035em; font-weight: 550; }
.section-heading p { font-size: 13px; color: var(--muted); line-height: 1.9; }
.product-tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-bottom: 1px solid var(--line); }
.product-tabs button { background: transparent; text-align: left; padding: 14px 28px 23px; border-bottom: 2px solid transparent; color: var(--muted); position: relative; }
.product-tabs button:first-child { padding-left: 0; }
.product-tabs button:not(:first-child)::before { content: ""; position: absolute; left: 0; top: 15px; width: 1px; height: 38px; background: var(--line); }
.product-tabs button > span { display: block; font-size: 20px; line-height: 1.5; font-weight: 550; white-space: nowrap; }
.product-tabs em { font-style: normal; }
.product-tabs small { display: block; font-size: 12px; line-height: 1.8; margin-top: 7px; font-weight: 400; white-space: nowrap; }
.product-tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--accent); }
.product-tabs button[aria-selected="true"] > span { color: var(--accent); }
/* 三个面板共用网格位置并保留占位，切换时下方内容不跳动。 */
.showcase-panels { display: grid; }
.showcase-layout { grid-area: 1 / 1; display: grid; grid-template-columns: minmax(0, .76fr) minmax(0, 1.65fr); gap: 68px; align-items: center; padding-top: 30px; }
.showcase-layout[hidden] { display: grid!important; visibility: hidden; pointer-events: none; }
.product-copy { min-width: 0; padding-bottom: 25px; }
.product-status { display: block; color: var(--muted); font-size: 11px; letter-spacing: .04em; margin-bottom: 19px; }
.product-copy h3 { font-size: 36px; line-height: 1.3; letter-spacing: -.04em; font-weight: 600; }
.product-copy h3 small { font-size: 22px; font-weight: 400; letter-spacing: -.035em; }
.product-subtitle { font-size: 14px; line-height: 1.9; margin-top: 14px; }
.product-description { font-size: 13px; color: var(--muted); line-height: 2; margin-top: 16px; }
.feature-list { display: grid; gap: 10px; font-size: 12px; color: var(--muted); margin: 23px 0; }
.feature-list li::before { content: "·"; margin-right: 10px; }
.product-actions { display: flex; align-items: center; gap: 25px; }
.demo-stage { aspect-ratio: 1.12; display: flex; align-items: center; min-width: 0; padding-block: 18px; }
.product-demo { width: 100%; }
.projects { padding: 10px 0 90px; }
.project-list { border-top: 1px solid var(--line); }
.project-row { display: grid; grid-template-columns: minmax(0, 1fr) 100px 28px; align-items: center; gap: 30px; width: 100%; padding: 24px 0; text-align: left; background: transparent; border-bottom: 1px solid var(--line); }
.project-title { font-size: 18px; font-weight: 500; line-height: 1.7; }
.project-title small { display: block; font-size: 12px; font-weight: 400; color: var(--muted); margin-top: 4px; }
.project-stage { text-align: right; font-size: 11px; color: var(--muted); white-space: nowrap; }
.project-row > span:last-child { font-size: 21px; text-align: right; }
.project-row:hover .project-title { color: var(--accent); }
.services { background: var(--navy); color: var(--white); padding-block: 85px; }
.service-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 120px; align-items: start; }
.service-label { display: block; font-size: 12px; color: var(--dark-muted); margin-bottom: 23px; }
.service-intro h2 { line-height: 1.65; font-weight: 500; }
.service-intro > p { color: var(--dark-muted); font-size: 14px; line-height: 2; margin-top: 23px; max-width: 370px; }
.service-intro > a { margin-top: 24px; }
.service-steps li { display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 22px; padding: 24px 0; border-top: 1px solid var(--line-light); }
.service-steps li:first-child { padding-top: 0; border-top: 0; }
.service-steps li > span { font-size: 11px; color: var(--dark-muted); padding-top: 7px; }
.service-steps h3 { font-size: 17px; line-height: 1.8; font-weight: 500; }
.service-steps p { color: var(--dark-muted); font-size: 13px; line-height: 1.95; margin-top: 9px; }
.about { padding-block: 95px; }
.about-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.6fr); gap: 90px; }
.about-location { font-size: 12px; color: var(--muted); margin-top: 17px; }
.about-copy p { font-size: 14px; line-height: 2; color: var(--muted); margin-bottom: 18px; }
.about-copy .about-lead { font-size: 23px; color: var(--ink); line-height: 1.6; font-weight: 500; margin-bottom: 23px; }
.about-actions { display: flex; align-items: center; gap: 32px; margin-top: 29px; }
.site-footer { background: var(--navy); color: var(--white); }
.footer-top { display: flex; align-items: center; gap: 30px; padding-block: 32px; }
.footer-top p { color: var(--dark-muted); font-size: 12px; margin-right: auto; }
.back-top { display: inline-flex; align-items: center; min-height: 44px; font-size: 11px; white-space: nowrap; }
.footer-bottom { display: flex; justify-content: space-between; gap: 25px; padding-block: 22px; color: var(--dark-muted); font-size: 11px; border-top: 1px solid var(--line-light); }
dialog { width: min(800px, calc(100% - 36px)); max-height: calc(100dvh - 64px); border: 1px solid var(--line); border-radius: 8px; padding: 0; background: var(--white); color: var(--ink); overscroll-behavior: contain; }
dialog::backdrop { background: rgb(7 17 34 / 65%); }
.dialog-shell { position: relative; padding: 55px 52px 32px; }
.dialog-close { position: absolute; top: 12px; right: 12px; width: 44px; height: 44px; display: grid; place-items: center; background: transparent; font-size: 28px; color: var(--muted); border-radius: 50%; }
.dialog-close:hover { background: var(--surface); }
.detail-header { padding-bottom: 25px; border-bottom: 1px solid var(--line); }
.detail-header h2 { font-size: 35px; }
.detail-header p { color: var(--muted); font-size: 16px; line-height: 1.85; margin-top: 14px; }
.detail-content { padding-top: 24px; }
.detail-content > p, .detail-section p { color: var(--muted); font-size: 14px; line-height: 1.95; margin-bottom: 22px; }
.detail-section { padding: 20px 0 0; border-top: 1px solid var(--line); }
.detail-section h3 { font-size: 17px; line-height: 1.8; font-weight: 550; margin-bottom: 10px; }
.detail-boundary { background: var(--surface); padding: 16px 20px; font-size: 12px!important; border-radius: 3px; margin-top: 20px; }
.detail-footer { display: flex; align-items: center; gap: 25px; padding-top: 5px; }
body.dialog-open { overflow-y: hidden; }
.noscript-note { padding: 20px; font-size: 14px; background: var(--surface); }
@media (max-width: 1100px) {
  .container { width: calc(100% - 72px); }
  .hero-grid { gap: 42px; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); }
  .hero-description p:first-child { font-size: 17px; }
  .desktop-break { display: none; }
  .showcase-layout { gap: 36px; }
  .product-copy h3 { font-size: 31px; }
  .product-copy h3 small { font-size: 18px; }
  .service-grid { gap: 65px; }
}
@media (max-width: 800px) {
  :root { --nav-h: 66px; }
  .container { width: calc(100% - 48px); }
  .nav-wrap { width: calc(100% - 32px); gap: 20px; }
  .brand img { width: 150px; height: 39px; }
  .desktop-nav { display: none; }
  .nav-contact { margin-left: auto; padding-left: 0; border-left: 0; font-size: 12px; }
  .menu-toggle { display: block; }
  .hero { padding-top: 58px; }
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 25px; padding-bottom: 42px; }
  .company-name { font-size: 11px; margin-bottom: 22px; }
  h1 { font-size: clamp(38px, 6.9vw, 53px); line-height: 1.45; }
  .hero-description p:first-child { font-size: 16px; }
  .hero-description p:first-child br { display: none; }
  .hero-description p:nth-child(2) { font-size: 13px; max-width: 550px; margin: 12px 0 21px; }
  .hero-scope { gap: 23px; font-size: 11px; padding-block: 20px; }
  .hero-location { display: none; }
  .products { padding: 50px 0 40px; }
  .section-heading { margin-bottom: 22px; }
  .section-heading p { font-size: 12px; }
  .product-tabs button { padding: 12px 17px 19px; }
  .product-tabs button > span { font-size: 16px; }
  .product-tabs small { font-size: 10px; }
  .showcase-layout { grid-template-columns: minmax(0, 1fr); gap: 20px; padding-top: 34px; }
  .product-copy { padding-bottom: 0; min-height: 270px; }
  .product-status { margin-bottom: 12px; }
  .product-copy h3 { font-size: 30px; }
  .product-subtitle { margin-top: 9px; }
  .product-description { margin-top: 12px; max-width: 600px; }
  .feature-list { display: flex; flex-wrap: wrap; gap: 8px 18px; margin: 15px 0; font-size: 11px; }
  .demo-stage { aspect-ratio: 1.12; padding-block: 8px; }
  .projects { padding-bottom: 60px; }
  .project-title { font-size: 16px; }
  .project-row { gap: 20px; grid-template-columns: minmax(0, 1fr) 80px 20px; }
  .project-title small { font-size: 11px; }
  .project-stage { font-size: 10px; }
  .services { padding-block: 60px; }
  .service-grid { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .service-intro > p { max-width: 550px; margin-top: 17px; }
  .service-intro > a { margin-top: 15px; }
  .service-steps li:first-child { border-top: 1px solid var(--line-light); padding-top: 24px; }
  .about { padding-block: 60px; }
  .about-grid { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .about-location { display: none; }
  .about-copy .about-lead { font-size: 21px; }
  .footer-top { flex-wrap: wrap; gap: 15px 25px; }
  .footer-top p { font-size: 11px; }
  .footer-bottom { font-size: 10px; }
  .dialog-shell { padding: 55px 28px 26px; }
}
@media (max-width: 480px) {
  .container { width: calc(100% - 40px); }
  .nav-contact { display: none; }
  .menu-toggle { margin-left: auto; }
  .hero { padding-top: 40px; }
  h1 { font-size: clamp(33px, 9vw, 43px); letter-spacing: -.05em; }
  .company-name { font-size: 10px; letter-spacing: .04em; margin-bottom: 18px; }
  .hero-grid { gap: 23px; padding-bottom: 33px; }
  .hero-description p:first-child { font-size: 14px; line-height: 1.95; }
  .hero-description p:nth-child(2) { font-size: 12px; margin: 10px 0 20px; }
  .hero-scope { justify-content: space-between; gap: 8px; font-size: 9px; padding-block: 18px; }
  .section-heading { align-items: flex-start; gap: 9px; flex-direction: column; }
  .section-heading p { font-size: 12px; }
  .product-tabs button { padding: 12px 8px 18px; }
  .product-tabs button > span { font-size: 14px; }
  .product-tabs em { display: none; }
  .product-tabs small { display: none; }
  .product-tabs button:not(:first-child)::before { height: 20px; top: 12px; }
  .product-copy { min-height: 292px; }
  .feature-list { display: grid; gap: 9px; }
  .product-subtitle { font-size: 13px; }
  .product-description { font-size: 12px; }
  .project-row { grid-template-columns: minmax(0, 1fr) 22px; gap: 8px 15px; padding-block: 21px; }
  .project-title { font-size: 16px; grid-column: 1; }
  .project-title small { margin-top: 7px; line-height: 1.9; }
  .project-stage { grid-row: 2; grid-column: 1; text-align: left; }
  .project-row > span:last-child { grid-column: 2; grid-row: 1 / 3; }
  .service-label { font-size: 11px; margin-bottom: 17px; }
  .service-intro > p { font-size: 13px; }
  .service-steps li { gap: 16px; }
  .service-steps h3 { font-size: 16px; }
  .service-steps p { font-size: 12px; }
  .about-copy p { font-size: 13px; }
  .about-actions { gap: 25px; flex-wrap: wrap; }
  .footer-top .brand { width: 100%; }
  .footer-top p { font-size: 9px; line-height: 1.9; max-width: 70%; }
  .back-top { font-size: 10px; margin-left: auto; }
  .footer-bottom { flex-wrap: wrap; gap: 10px; }
  .footer-bottom > span:first-child { width: 100%; }
  .detail-header h2 { font-size: 28px; }
  .detail-header p { font-size: 14px; }
  .detail-content > p, .detail-section p { font-size: 13px; }
  .detail-footer { gap: 22px; flex-wrap: wrap; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition-duration: .01ms!important; } }