:root {
  --ink: #082a2a;
  --ink-deep: #031a1b;
  --teal: #12b8aa;
  --teal-light: #b9f7ec;
  --cyan: #66e2d5;
  --paper: #f5f8f7;
  --white: #ffffff;
  --muted: #637371;
  --line: rgba(6, 43, 43, 0.13);
  --blue: #1464d2;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, a, summary { -webkit-tap-highlight-color: transparent; }

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  height: 78px;
  padding: 0 clamp(24px, 4.8vw, 76px);
  display: flex;
  align-items: center;
  gap: 36px;
  background: rgba(250, 253, 252, .92);
  border-bottom: 1px solid rgba(8, 42, 42, .08);
  backdrop-filter: blur(18px);
}
.brand { display: inline-flex; align-items: center; gap: 13px; flex: none; }
.brand-symbol {
  width: 45px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1px;
  border-radius: 11px;
  color: white;
  background: linear-gradient(135deg, #1464d2, #0abda9);
  box-shadow: 0 9px 25px rgba(8, 104, 122, .18);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: -.08em;
}
.brand-symbol i { color: #d7fff8; font-size: 6px; font-style: normal; }
.brand-text { display: grid; gap: 2px; }
.brand-text strong { font-size: 18px; letter-spacing: .08em; }
.brand-text small { color: #80908e; font-size: 8px; font-weight: 800; letter-spacing: .16em; }
.desktop-nav { display: flex; align-items: center; gap: clamp(22px, 2.7vw, 43px); margin: 0 auto; }
.desktop-nav a { position: relative; padding: 29px 0 26px; color: #3c504e; font-size: 14px; font-weight: 650; }
.desktop-nav a::after { content: ""; position: absolute; right: 0; bottom: 21px; left: 0; height: 2px; background: var(--teal); transform: scaleX(0); transition: transform .18s ease; }
.desktop-nav a:hover::after, .desktop-nav a:focus-visible::after, .desktop-nav a.active::after { transform: scaleX(1); }
.desktop-nav a.active { color: var(--ink); }
.header-actions { display: flex; align-items: center; gap: 21px; flex: none; }
.tool-link { color: #49605d; font-size: 13px; font-weight: 700; }
.tool-link span { color: var(--teal); padding-left: 4px; }
.header-cta { padding: 13px 17px 13px 19px; display: inline-flex; align-items: center; gap: 18px; border-radius: 8px; color: white; background: var(--ink); font-size: 13px; font-weight: 750; transition: transform .18s ease, background .18s ease; }
.header-cta:hover { transform: translateY(-2px); background: #114b48; }
.header-cta span { color: var(--teal-light); font-size: 17px; }
.mobile-menu { display: none; }

.hero {
  position: relative;
  min-height: calc(100vh - 78px);
  padding: clamp(72px, 8vw, 118px) clamp(28px, 5.6vw, 92px) 100px;
  display: grid;
  grid-template-columns: minmax(410px, .88fr) minmax(560px, 1.12fr);
  align-items: center;
  gap: clamp(54px, 6vw, 110px);
  overflow: hidden;
  color: white;
  background: radial-gradient(circle at 75% 20%, rgba(33, 199, 181, .18), transparent 28%), linear-gradient(120deg, #031819 0%, #062c2b 56%, #073936 100%);
}
.hero::after { content: ""; position: absolute; right: -190px; top: -280px; width: 660px; height: 660px; border: 1px solid rgba(161, 248, 234, .12); border-radius: 50%; box-shadow: 0 0 0 95px rgba(94, 225, 207, .025), 0 0 0 190px rgba(94, 225, 207, .018); }
.hero-grid { position: absolute; inset: 0; opacity: .11; background-image: linear-gradient(rgba(187, 250, 239, .16) 1px, transparent 1px), linear-gradient(90deg, rgba(187, 250, 239, .16) 1px, transparent 1px); background-size: 58px 58px; mask-image: linear-gradient(90deg, #000, transparent 52%); }
.hero-copy, .hero-console { position: relative; z-index: 2; }
.eyebrow { margin: 0; display: flex; align-items: center; gap: 12px; color: rgba(207, 243, 237, .62); font-size: 10px; font-weight: 800; letter-spacing: .17em; }
.eyebrow span { padding: 7px 10px; border-radius: 4px; color: var(--ink); background: var(--teal-light); letter-spacing: .06em; }
.hero h1 { margin: 30px 0 27px; font-size: clamp(50px, 5.25vw, 82px); line-height: 1.09; letter-spacing: -.065em; }
.hero h1 em { color: var(--teal-light); font-style: normal; }
.hero-intro { max-width: 630px; margin: 0; color: rgba(223, 243, 240, .67); font-size: clamp(16px, 1.15vw, 18px); line-height: 1.95; }
.hero-actions { margin-top: 39px; display: flex; align-items: center; gap: 13px; }
.primary-button, .secondary-button { min-height: 58px; padding: 0 16px 0 21px; display: inline-flex; align-items: center; justify-content: center; gap: 28px; border-radius: 8px; font-size: 14px; font-weight: 800; transition: transform .18s ease, box-shadow .18s ease; }
.primary-button { color: var(--ink); background: var(--teal-light); box-shadow: 0 18px 42px rgba(24, 215, 188, .16); }
.primary-button span { width: 31px; height: 31px; display: grid; place-items: center; border-radius: 6px; color: white; background: var(--ink); font-size: 17px; }
.secondary-button { color: #dcf5f1; border: 1px solid rgba(203, 245, 238, .2); background: rgba(255, 255, 255, .035); }
.secondary-button span { color: var(--cyan); }
.primary-button:hover, .secondary-button:hover { transform: translateY(-3px); }
.hero-footnote { margin-top: 43px; padding-top: 24px; display: flex; align-items: center; gap: 14px; border-top: 1px solid rgba(208, 247, 240, .12); }
.pulse-dot { width: 8px; height: 8px; flex: none; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 6px rgba(102, 226, 213, .1); }
.hero-footnote p { margin: 0; display: grid; gap: 5px; }
.hero-footnote strong { font-size: 12px; }
.hero-footnote small { color: rgba(216, 241, 236, .48); font-size: 10px; }

.hero-console { min-width: 0; border: 1px solid rgba(213, 252, 245, .24); border-radius: 18px; background: #f8fbfa; box-shadow: 0 42px 100px rgba(0, 12, 12, .4), 0 0 0 10px rgba(196, 250, 242, .025); transform: rotateY(-3deg) rotateX(1deg); }
.console-topbar { height: 60px; padding: 0 19px; display: flex; align-items: center; justify-content: space-between; color: var(--ink); border-bottom: 1px solid #e1eae7; }
.console-topbar > div { display: flex; align-items: center; gap: 10px; }
.console-logo { width: 28px; height: 28px; display: grid; place-items: center; border-radius: 7px; color: white; background: linear-gradient(135deg, var(--blue), var(--teal)); font-size: 9px; font-weight: 900; }
.console-topbar p { margin: 0; display: grid; gap: 2px; }
.console-topbar strong { font-size: 10px; }
.console-topbar small { color: #91a09d; font-size: 6px; letter-spacing: .16em; }
.console-status { padding: 7px 9px; border-radius: 99px; color: #178b7e; background: #e4f8f4; font-size: 7px; font-weight: 800; }
.console-status::before { content: ""; width: 5px; height: 5px; margin-right: 6px; display: inline-block; border-radius: 50%; background: var(--teal); }
.console-body { min-height: 470px; display: grid; grid-template-columns: 57px 1fr; }
.console-body aside { padding: 18px 10px 12px; display: flex; flex-direction: column; align-items: center; gap: 13px; border-right: 1px solid #e2eae8; background: #f2f7f5; }
.console-body aside span { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 7px; color: #91a29f; font-size: 12px; }
.console-body aside span.active { color: white; background: var(--ink); }
.console-body aside i { flex: 1; }
.console-main { min-width: 0; padding: 25px; color: var(--ink); }
.console-heading { display: flex; align-items: flex-end; justify-content: space-between; }
.console-heading small { color: #99a7a4; font-size: 6px; font-weight: 800; letter-spacing: .18em; }
.console-heading h2 { margin: 5px 0 0; font-size: 21px; letter-spacing: -.04em; }
.console-heading > span { color: #a0aeab; font-size: 9px; font-weight: 700; }
.solution-grid { margin-top: 21px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 9px; }
.solution-grid article { position: relative; min-width: 0; min-height: 155px; padding: 13px; overflow: hidden; border: 1px solid #dfe8e5; border-radius: 9px; background: white; }
.solution-grid article.featured { color: white; border-color: var(--ink); background: var(--ink); }
.solution-grid article > div { display: flex; align-items: center; justify-content: space-between; }
.solution-grid article > div span { width: 31px; height: 31px; display: grid; place-items: center; border-radius: 8px; color: #097d72; background: #dff8f3; font-size: 9px; font-weight: 900; }
.solution-grid article.featured > div span { color: var(--ink); background: var(--teal-light); }
.solution-grid article i { color: #b2bfbc; font-size: 7px; font-style: normal; }
.solution-grid h3 { margin: 24px 0 5px; font-size: 13px; }
.solution-grid p { margin: 0; color: #869692; font-size: 7px; }
.solution-grid article.featured p { color: rgba(226, 247, 243, .55); }
.solution-grid b { position: absolute; right: 12px; bottom: 10px; color: #a5b5b1; font-size: 11px; }
.solution-grid article.featured b { color: var(--cyan); }
.console-chart { margin-top: 12px; padding: 15px 16px 5px; border: 1px solid #dfe8e5; border-radius: 9px; background: white; }
.console-chart > div { display: flex; align-items: center; justify-content: space-between; }
.console-chart span { color: #70817e; font-size: 8px; font-weight: 700; }
.console-chart strong { color: #119c8d; font-size: 13px; }
.console-chart svg { width: 100%; height: 72px; display: block; }
.float-badge { position: absolute; right: -30px; bottom: 52px; padding: 12px 15px; display: flex; align-items: center; gap: 11px; border-radius: 11px; color: var(--ink); background: rgba(237, 255, 251, .95); box-shadow: 0 17px 40px rgba(0, 23, 23, .28); }
.float-badge > span { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 9px; color: white; background: var(--teal); font-size: 10px; font-weight: 900; }
.float-badge p { margin: 0; display: grid; gap: 3px; }
.float-badge strong { font-size: 10px; }
.float-badge small { color: #82928f; font-size: 7px; }

.business-strip { display: grid; grid-template-columns: 1.5fr 1fr 1fr; min-height: 132px; background: white; border-bottom: 1px solid var(--line); }
.business-strip > * { margin: 0; padding: 30px clamp(22px, 4vw, 58px); display: grid; align-content: center; border-right: 1px solid var(--line); }
.business-strip > *:last-child { border-right: 0; }
.business-strip p { color: #9aa7a4; font-size: 8px; font-weight: 800; letter-spacing: .18em; }
.business-strip p span { margin-top: 9px; color: var(--ink); font-size: 12px; letter-spacing: 0; }
.business-strip div { grid-template-columns: auto 1fr; column-gap: 15px; }
.business-strip div strong { grid-row: span 2; color: var(--teal); font-size: 25px; letter-spacing: -.06em; }
.business-strip div span { font-size: 14px; font-weight: 850; }
.business-strip div small { margin-top: 5px; color: #8d9b98; font-size: 8px; }

.section { width: min(1480px, 100%); margin: 0 auto; padding: 130px clamp(28px, 6vw, 92px); }
.section-heading { margin-bottom: 58px; display: grid; grid-template-columns: 1fr minmax(330px, .55fr); align-items: end; gap: 80px; }
.section-kicker { margin: 0 0 18px; color: var(--teal); font-size: 10px; font-weight: 900; letter-spacing: .22em; }
.section-heading h2, .connection-copy h2, .qingmei-copy h2, .service-heading h2, .contact-section h2 { margin: 0; font-size: clamp(42px, 4.7vw, 70px); line-height: 1.1; letter-spacing: -.06em; }
.section-heading h2 span, .service-heading h2 span { color: var(--teal); }
.section-intro { padding-left: 28px; border-left: 2px solid var(--teal); }
.section-intro span { color: var(--ink); font-size: 11px; font-weight: 900; }
.section-intro p { margin: 13px 0 0; color: var(--muted); font-size: 15px; line-height: 1.85; }
.application-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 16px; }
.application-card { position: relative; min-height: 360px; padding: 27px; display: flex; flex-direction: column; justify-content: space-between; overflow: hidden; border: 1px solid var(--line); border-radius: 5px; background: white; transition: transform .22s ease, box-shadow .22s ease; }
.application-card:hover { transform: translateY(-6px); box-shadow: 0 25px 60px rgba(7, 43, 43, .11); }
.application-card:nth-child(1), .application-card:nth-child(2), .application-card:nth-child(3) { grid-column: span 4; }
.application-card:nth-child(4), .application-card:nth-child(5) { grid-column: span 6; }
.application-card.teal { background: #c8f7ee; }
.application-card.ink { color: white; border-color: var(--ink); background: radial-gradient(circle at 85% 5%, rgba(24, 205, 181, .24), transparent 35%), var(--ink); }
.application-card.blue { color: white; border-color: #155cb7; background: linear-gradient(135deg, #0d4fa8, #1772d4); }
.application-card.sand { background: #f0eadc; }
.application-top { display: flex; align-items: flex-start; justify-content: space-between; }
.application-icon { min-width: 48px; height: 42px; padding: 0 10px; display: inline-grid; place-items: center; border: 1px solid currentColor; border-radius: 99px; font-size: 9px; font-weight: 900; letter-spacing: .06em; }
.application-number { font-size: 10px; font-weight: 900; letter-spacing: .13em; opacity: .45; }
.application-card h3 { margin: 0 0 12px; font-size: 27px; letter-spacing: -.04em; }
.application-card p { max-width: 540px; margin: 0; font-size: 14px; line-height: 1.75; opacity: .66; }
.application-card ul { margin: 22px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 7px; list-style: none; }
.application-card li { padding: 6px 9px; border: 1px solid currentColor; border-radius: 99px; font-size: 9px; font-weight: 750; opacity: .55; }
.application-card > a { margin-top: 26px; padding-top: 17px; display: flex; align-items: center; justify-content: space-between; border-top: 1px solid currentColor; font-size: 11px; font-weight: 800; opacity: .75; }
.application-card > a span { font-size: 17px; }

.connection-section { max-width: 1600px; margin: 0 auto; padding: 120px clamp(28px, 7vw, 110px); display: grid; grid-template-columns: .62fr 1.38fr; align-items: center; gap: clamp(60px, 8vw, 125px); color: white; background: var(--ink); }
.connection-copy h2 { font-size: clamp(42px, 4.4vw, 66px); }
.connection-copy > p:not(.section-kicker) { margin: 27px 0 0; color: rgba(222, 242, 238, .64); font-size: 15px; line-height: 1.9; }
.connection-points { margin-top: 38px; border-top: 1px solid rgba(212, 249, 242, .14); }
.connection-points > div { padding: 18px 0; display: grid; grid-template-columns: 62px 1fr; border-bottom: 1px solid rgba(212, 249, 242, .14); }
.connection-points strong { color: var(--teal-light); font-size: 12px; }
.connection-points span { color: rgba(225, 245, 241, .7); font-size: 12px; }
.flow-board { padding: 28px; border: 1px solid rgba(210, 249, 243, .18); border-radius: 12px; background: rgba(255, 255, 255, .035); box-shadow: 0 30px 70px rgba(0, 12, 12, .22); }
.flow-label { padding-bottom: 20px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(210, 249, 243, .13); }
.flow-label span { color: var(--teal); font-size: 8px; font-weight: 900; letter-spacing: .2em; }
.flow-label strong { color: rgba(229, 248, 245, .65); font-size: 10px; }
.flow-row { padding: 46px 0; display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; align-items: center; gap: 10px; }
.flow-row article { position: relative; min-height: 145px; padding: 18px 14px; display: flex; flex-direction: column; justify-content: flex-end; border: 1px solid rgba(216, 250, 245, .14); border-radius: 7px; background: rgba(255, 255, 255, .035); }
.flow-row article:first-child { border-color: rgba(98, 225, 208, .45); background: rgba(43, 191, 172, .12); }
.flow-row article > span { position: absolute; top: 14px; right: 14px; color: var(--teal); font-size: 8px; font-weight: 900; }
.flow-row strong { font-size: 12px; }
.flow-row small { margin-top: 7px; color: rgba(218, 241, 237, .43); font-size: 7px; }
.flow-row > i { color: var(--teal); font-size: 15px; font-style: normal; opacity: .65; }
.flow-metric { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid rgba(210, 249, 243, .13); }
.flow-metric > div { padding: 22px 15px 0; display: grid; gap: 6px; border-right: 1px solid rgba(210, 249, 243, .13); }
.flow-metric > div:first-child { padding-left: 0; }
.flow-metric > div:last-child { border-right: 0; }
.flow-metric small { color: rgba(219, 244, 240, .38); font-size: 8px; }
.flow-metric strong { color: var(--teal-light); font-size: 12px; }

.qingmei-section { max-width: 1600px; min-height: 760px; margin: 0 auto; padding: 115px clamp(28px, 6vw, 96px); display: grid; grid-template-columns: 1.25fr .75fr; align-items: center; gap: clamp(60px, 8vw, 126px); overflow: hidden; background: #d6faf4; }
.qingmei-visual { position: relative; min-width: 0; }
.qingmei-window { overflow: hidden; border: 1px solid rgba(7, 44, 43, .18); border-radius: 14px; background: white; box-shadow: 0 34px 80px rgba(8, 75, 68, .16); transform: rotate(-1.8deg); }
.qingmei-bar { height: 46px; padding: 0 16px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid #e3eae9; color: var(--ink); background: #f8faf9; }
.qingmei-bar span { display: flex; align-items: center; gap: 8px; font-size: 9px; font-weight: 800; }
.qingmei-bar i { width: 20px; height: 20px; display: inline-block; border-radius: 6px; background: var(--teal); }
.qingmei-bar small { color: #8d9b99; font-size: 7px; }
.qingmei-window img { width: 100%; aspect-ratio: 1.85 / 1; object-fit: cover; object-position: center; }
.qingmei-sticker { position: absolute; right: -28px; bottom: -35px; padding: 14px 18px 14px 14px; display: flex; align-items: center; gap: 12px; border-radius: 11px; color: white; background: var(--ink); box-shadow: 0 18px 40px rgba(3, 35, 33, .22); }
.qingmei-sticker strong { width: 39px; height: 39px; display: grid; place-items: center; border-radius: 9px; color: var(--ink); background: var(--teal-light); font-size: 11px; }
.qingmei-sticker span { font-size: 9px; font-weight: 800; line-height: 1.5; }
.product-badge { display: inline-block; margin-bottom: 28px; padding: 8px 11px; border: 1px solid rgba(8, 42, 42, .19); border-radius: 99px; font-size: 9px; font-weight: 900; letter-spacing: .08em; }
.qingmei-copy h2 { font-size: clamp(42px, 4.5vw, 68px); }
.qingmei-copy > p:not(.section-kicker) { margin: 27px 0 0; color: #586b67; font-size: 15px; line-height: 1.9; }
.toolbox-tags { margin-top: 30px; display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid rgba(8, 42, 42, .14); }
.toolbox-tags span { padding: 15px 3px; border-bottom: 1px solid rgba(8, 42, 42, .14); font-size: 11px; font-weight: 750; }
.toolbox-tags span:nth-child(odd) { border-right: 1px solid rgba(8, 42, 42, .14); }
.toolbox-tags i { padding-right: 11px; color: #25a99b; font-size: 8px; font-style: normal; }
.qingmei-actions { margin-top: 33px; display: flex; align-items: center; gap: 25px; }
.dark-button { min-height: 55px; padding: 0 16px 0 20px; display: inline-flex; align-items: center; gap: 27px; border-radius: 8px; color: white; background: var(--ink); font-size: 12px; font-weight: 800; }
.dark-button span { color: var(--teal-light); font-size: 17px; }
.inline-link { padding-bottom: 4px; border-bottom: 1px solid rgba(8, 42, 42, .25); color: #405552; font-size: 15px; font-weight: 850; }
.download-page-link { display: inline-flex; align-items: center; gap: 10px; }
.download-page-link span { color: var(--teal); font-size: 19px; }

.service-section { width: min(1480px, 100%); margin: 0 auto; padding: 130px clamp(28px, 6vw, 92px); display: grid; grid-template-columns: .78fr 1.22fr; gap: clamp(70px, 10vw, 150px); }
.service-heading { align-self: start; position: sticky; top: 120px; }
.service-heading > p:not(.section-kicker) { max-width: 550px; margin: 27px 0 0; color: var(--muted); font-size: 15px; line-height: 1.9; }
.service-steps { border-top: 1px solid var(--line); }
.service-steps article { min-height: 142px; padding: 31px 5px; display: grid; grid-template-columns: 65px 1fr; border-bottom: 1px solid var(--line); }
.service-steps article > span { color: var(--teal); font-size: 10px; font-weight: 900; letter-spacing: .13em; }
.service-steps strong { font-size: 22px; letter-spacing: -.03em; }
.service-steps p { margin: 10px 0 0; color: var(--muted); font-size: 13px; line-height: 1.7; }

.contact-section { position: relative; max-width: 1600px; min-height: 590px; margin: 0 auto; padding: 100px clamp(28px, 8vw, 128px); display: grid; grid-template-columns: 1.12fr .88fr; align-items: center; gap: clamp(70px, 10vw, 150px); overflow: hidden; color: white; background: linear-gradient(120deg, #031a1b, #073d39); }
.contact-section > div:not(.contact-orbit) { position: relative; z-index: 2; }
.contact-section h2 { max-width: 850px; font-size: clamp(44px, 5vw, 75px); }
.contact-section > div > p:not(.section-kicker) { max-width: 610px; margin: 26px 0 0; color: rgba(221, 243, 239, .6); font-size: 15px; line-height: 1.85; }
.contact-orbit { position: absolute; right: 18%; top: 50%; width: 510px; height: 510px; border: 1px solid rgba(131, 238, 222, .1); border-radius: 50%; transform: translate(50%, -50%); box-shadow: 0 0 0 82px rgba(68, 213, 192, .025), 0 0 0 164px rgba(68, 213, 192, .018); }
.contact-card { padding: 31px; border: 1px solid rgba(206, 247, 240, .2); border-radius: 12px; background: rgba(255, 255, 255, .055); backdrop-filter: blur(12px); }
.contact-card > span { color: var(--teal); font-size: 9px; font-weight: 900; letter-spacing: .14em; }
.contact-card > strong { margin-top: 15px; display: block; font-size: 25px; }
.contact-card > p { font-size: 13px !important; line-height: 1.75 !important; }
.contact-card > a { margin-top: 27px; padding: 18px 18px 18px 21px; display: flex; align-items: center; justify-content: space-between; border-radius: 7px; color: var(--ink); background: var(--teal-light); font-size: 13px; font-weight: 900; }
.contact-card > a b { font-size: 18px; }
.contact-card > small { margin-top: 13px; display: block; color: rgba(218, 242, 238, .38); text-align: center; font-size: 8px; }

.contact-modal {
  position: fixed;
  z-index: 300;
  inset: 0;
  padding: 24px;
  display: grid;
  place-items: center;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transition: opacity .22s ease, visibility .22s ease;
}
.contact-modal:target { visibility: visible; opacity: 1; pointer-events: auto; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(2, 21, 21, .78); backdrop-filter: blur(10px); }
.modal-card {
  position: relative;
  z-index: 1;
  width: min(760px, 100%);
  max-height: calc(100vh - 48px);
  padding: clamp(28px, 4vw, 48px);
  overflow: auto;
  border: 1px solid rgba(164, 235, 224, .25);
  border-radius: 18px;
  background: #f8fbfa;
  box-shadow: 0 34px 90px rgba(0, 15, 15, .42);
}
.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: #5d706d;
  background: white;
  font-size: 24px;
  line-height: 1;
  transition: transform .18s ease, color .18s ease;
}
.modal-close:hover { color: var(--ink); transform: rotate(8deg); }
.modal-heading { padding-right: 42px; }
.modal-heading > span { color: var(--teal); font-size: 10px; font-weight: 900; letter-spacing: .2em; }
.modal-heading h2 { margin: 12px 0 0; color: var(--ink); font-size: clamp(32px, 4vw, 46px); letter-spacing: -.05em; }
.modal-heading p { max-width: 580px; margin: 13px 0 0; color: var(--muted); font-size: 14px; line-height: 1.75; }
.modal-contact { margin-top: 31px; display: grid; grid-template-columns: 230px 1fr; gap: 26px; }
.qr-frame { padding: 14px; display: grid; gap: 10px; border: 1px solid var(--line); border-radius: 12px; background: white; }
.qr-frame img { width: 100%; aspect-ratio: 1; object-fit: contain; }
.qr-frame small { color: #71827f; text-align: center; font-size: 12px; font-weight: 700; }
.phone-card { padding: 26px; display: flex; flex-direction: column; justify-content: center; border-radius: 12px; color: white; background: var(--ink); }
.phone-card > span { color: var(--cyan); font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.phone-card > a:not(.call-button) { margin-top: 13px; color: white; font-size: clamp(25px, 3.2vw, 34px); font-weight: 900; letter-spacing: -.03em; }
.phone-card > p { margin: 9px 0 0; color: rgba(224, 244, 240, .53); font-size: 13px; }
.call-button { margin-top: 28px; padding: 15px 17px; display: flex; align-items: center; justify-content: space-between; border-radius: 7px; color: var(--ink); background: var(--teal-light); font-size: 14px; font-weight: 900; }
.call-button b { font-size: 18px; }

.download-page { min-height: 100vh; background: #f5f8f7; }
.download-hero {
  position: relative;
  min-height: calc(100vh - 78px);
  padding: clamp(74px, 8vw, 120px) clamp(28px, 6vw, 96px) 95px;
  display: grid;
  grid-template-columns: .84fr 1.16fr;
  align-items: center;
  gap: clamp(60px, 8vw, 130px);
  overflow: hidden;
  color: white;
  background: radial-gradient(circle at 78% 24%, rgba(43, 213, 191, .2), transparent 27%), linear-gradient(120deg, #03191a, #073a37);
}
.download-grid { position: absolute; inset: 0; opacity: .1; background-image: linear-gradient(rgba(187, 250, 239, .16) 1px, transparent 1px), linear-gradient(90deg, rgba(187, 250, 239, .16) 1px, transparent 1px); background-size: 58px 58px; mask-image: linear-gradient(90deg, #000, transparent 55%); }
.download-copy, .download-preview { position: relative; z-index: 1; }
.download-label { display: inline-block; padding: 8px 11px; border: 1px solid rgba(198, 247, 239, .22); border-radius: 99px; color: var(--teal-light); font-size: 12px; font-weight: 800; }
.download-copy h1 { margin: 25px 0 24px; font-size: clamp(50px, 5.2vw, 80px); line-height: 1.08; letter-spacing: -.065em; }
.download-copy h1 em { color: var(--teal-light); font-style: normal; }
.download-copy > p:not(.section-kicker) { max-width: 650px; margin: 0; color: rgba(224, 245, 241, .66); font-size: 17px; line-height: 1.9; }
.windows-download-button { width: min(430px, 100%); min-height: 76px; margin-top: 36px; padding: 0 18px 0 22px; display: flex; align-items: center; gap: 16px; border-radius: 10px; color: var(--ink); background: var(--teal-light); box-shadow: 0 20px 50px rgba(26, 212, 186, .2); transition: transform .18s ease, box-shadow .18s ease; }
.windows-download-button:hover { transform: translateY(-4px); box-shadow: 0 25px 60px rgba(26, 212, 186, .28); }
.windows-download-button strong { flex: 1; font-size: 20px; letter-spacing: .01em; }
.windows-download-button > b { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 8px; color: white; background: var(--ink); font-size: 21px; }
.windows-icon { display: grid; grid-template-columns: 9px 9px; gap: 3px; }
.windows-icon i { width: 9px; height: 9px; background: var(--ink); }
.download-meta { margin-top: 37px; padding-top: 24px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid rgba(211, 247, 240, .13); }
.download-meta > span { padding: 0 18px; display: grid; gap: 6px; border-right: 1px solid rgba(211, 247, 240, .13); }
.download-meta > span:first-child { padding-left: 0; }
.download-meta > span:last-child { border-right: 0; }
.download-meta small { color: rgba(222, 244, 240, .4); font-size: 11px; }
.download-meta strong { font-size: 13px; }
.download-preview { min-width: 0; }
.download-window { overflow: hidden; border: 1px solid rgba(210, 251, 244, .3); border-radius: 17px; background: white; box-shadow: 0 44px 100px rgba(0, 12, 12, .42), 0 0 0 10px rgba(185, 247, 236, .025); transform: rotateY(-4deg) rotateX(2deg); }
.download-window-bar { height: 48px; padding: 0 16px; display: flex; align-items: center; justify-content: space-between; color: var(--ink); background: #f7faf9; border-bottom: 1px solid #e0e8e6; }
.download-window-bar span { display: flex; align-items: center; gap: 8px; font-size: 11px; font-weight: 800; }
.download-window-bar i { width: 22px; height: 22px; display: inline-block; border-radius: 6px; background: var(--teal); }
.download-window-bar small { color: #879793; font-size: 9px; }
.download-window img { width: 100%; aspect-ratio: 1.65 / 1; object-fit: cover; object-position: center; }
.download-ready { position: absolute; right: -25px; bottom: -30px; padding: 14px 17px; display: flex; align-items: center; gap: 12px; border-radius: 11px; color: var(--ink); background: rgba(239, 255, 252, .96); box-shadow: 0 18px 40px rgba(0, 22, 22, .27); }
.download-ready > span { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; color: white; background: var(--teal); font-size: 15px; font-weight: 900; }
.download-ready p { margin: 0; display: grid; gap: 3px; }
.download-ready strong { font-size: 12px; }
.download-ready small { color: #7a8b87; font-size: 10px; }
.download-steps { min-height: 230px; display: grid; grid-template-columns: repeat(3, 1fr); background: white; border-bottom: 1px solid var(--line); }
.download-steps > div { padding: 48px clamp(26px, 5vw, 74px); border-right: 1px solid var(--line); }
.download-steps > div:last-child { border-right: 0; }
.download-steps span { color: var(--teal); font-size: 11px; font-weight: 900; letter-spacing: .14em; }
.download-steps strong { margin-top: 14px; display: block; font-size: 20px; }
.download-steps p { margin: 10px 0 0; color: var(--muted); font-size: 14px; line-height: 1.75; }
.download-support { max-width: 1480px; margin: 0 auto; padding: 100px clamp(28px, 7vw, 105px); display: flex; align-items: center; justify-content: space-between; gap: 70px; }
.download-support h2 { margin: 0; font-size: clamp(38px, 4vw, 60px); letter-spacing: -.055em; }
.download-support > div > p:not(.section-kicker) { margin: 18px 0 0; color: var(--muted); font-size: 15px; }
.support-actions { display: flex; align-items: center; gap: 18px; flex: none; }
.support-actions a:first-child { min-height: 58px; padding: 0 18px 0 22px; display: inline-flex; align-items: center; gap: 27px; border-radius: 8px; color: white; background: var(--ink); font-size: 15px; font-weight: 800; }
.support-actions a:first-child span { color: var(--teal-light); font-size: 18px; }
.support-actions a:last-child { padding: 14px 2px; color: #405552; border-bottom: 1px solid var(--line); font-size: 14px; font-weight: 800; }

footer { min-height: 145px; padding: 32px clamp(28px, 5vw, 80px); display: grid; grid-template-columns: auto 1fr auto auto; align-items: center; gap: 55px; background: white; }
footer > p { margin: 0; color: #80908d; font-size: 11px; }
footer nav { display: flex; gap: 25px; }
footer nav a { color: #566966; font-size: 10px; font-weight: 750; }
.footer-meta { display: grid; justify-items: end; gap: 6px; }
.footer-meta span, .footer-meta a { color: #95a29f; font-size: 9px; }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition-duration: .01ms !important; } }
@media (max-width: 1150px) {
  .desktop-nav { display: none; }
  .header-actions { margin-left: auto; }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { max-width: 760px; }
  .hero-console { width: min(820px, 96%); margin: 10px auto 0; }
  .application-card:nth-child(1), .application-card:nth-child(2), .application-card:nth-child(3) { grid-column: span 6; }
  .application-card:nth-child(4), .application-card:nth-child(5) { grid-column: span 6; }
  .application-card:last-child { grid-column: span 12; }
  .connection-section { grid-template-columns: 1fr; }
  .connection-copy { max-width: 760px; }
  .qingmei-section { grid-template-columns: 1fr; }
  .qingmei-visual { width: min(900px, 95%); order: 2; }
  .qingmei-copy { max-width: 720px; }
  footer { grid-template-columns: 1fr 1fr; }
  footer nav { justify-content: flex-end; }
  footer > p { order: 3; }
  .footer-meta { order: 4; }
}
@media (max-width: 760px) {
  .site-header { height: 70px; padding: 0 19px; }
  .header-actions { display: none; }
  .mobile-menu { position: relative; display: block; margin-left: auto; }
  .mobile-menu summary { width: 40px; height: 40px; padding: 10px; display: grid; align-content: center; gap: 4px; list-style: none; cursor: pointer; border-radius: 8px; background: var(--ink); }
  .mobile-menu summary::-webkit-details-marker { display: none; }
  .mobile-menu summary i { height: 2px; display: block; background: var(--teal-light); }
  .mobile-menu nav { position: absolute; right: 0; top: 49px; width: 210px; padding: 10px; display: grid; border: 1px solid var(--line); border-radius: 10px; background: white; box-shadow: 0 20px 50px rgba(4, 35, 35, .16); }
  .mobile-menu nav a { padding: 12px; color: var(--ink); font-size: 14px; font-weight: 700; border-bottom: 1px solid var(--line); }
  .mobile-menu nav a:last-child { border: 0; color: white; background: var(--ink); border-radius: 7px; }
  .brand-text small { display: none; }
  .hero { min-height: auto; padding: 68px 21px 86px; gap: 74px; }
  .hero h1 { font-size: clamp(45px, 13vw, 63px); }
  .eyebrow { align-items: flex-start; flex-direction: column; gap: 8px; }
  .hero-intro { font-size: 15px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-console { width: 100%; transform: none; }
  .console-body { min-height: 370px; grid-template-columns: 42px 1fr; }
  .console-body aside { padding-right: 6px; padding-left: 6px; }
  .console-body aside span { width: 26px; height: 26px; }
  .console-main { padding: 17px 12px; }
  .solution-grid { grid-template-columns: repeat(2, 1fr); }
  .solution-grid article { min-height: 130px; }
  .solution-grid h3 { margin-top: 18px; }
  .console-chart { display: none; }
  .float-badge { right: -5px; bottom: -38px; }
  .business-strip { grid-template-columns: 1fr 1fr; }
  .business-strip > p { grid-column: span 2; border-bottom: 1px solid var(--line); }
  .section { padding: 90px 21px; }
  .section-heading { grid-template-columns: 1fr; gap: 30px; margin-bottom: 42px; }
  .section-heading h2, .connection-copy h2, .qingmei-copy h2, .service-heading h2, .contact-section h2 { font-size: clamp(39px, 11vw, 56px); }
  .section-intro { padding-left: 18px; }
  .application-grid { grid-template-columns: 1fr; }
  .application-card:nth-child(n) { min-height: 325px; grid-column: span 1; }
  .connection-section { padding: 90px 21px; gap: 55px; }
  .flow-board { padding: 19px; }
  .flow-label { align-items: flex-start; flex-direction: column; gap: 7px; }
  .flow-row { padding: 30px 0; grid-template-columns: 1fr 1fr; gap: 9px; }
  .flow-row > i { display: none; }
  .flow-row article { min-height: 128px; }
  .flow-metric { grid-template-columns: 1fr; }
  .flow-metric > div { padding: 16px 0; border-right: 0; border-bottom: 1px solid rgba(210, 249, 243, .13); }
  .qingmei-section { min-height: auto; padding: 90px 21px 115px; gap: 58px; }
  .qingmei-visual { width: 100%; }
  .qingmei-window { transform: none; }
  .qingmei-window img { aspect-ratio: 1.4 / 1; object-position: left center; }
  .qingmei-sticker { right: -3px; }
  .qingmei-actions { align-items: stretch; flex-direction: column; }
  .dark-button { justify-content: center; }
  .inline-link { align-self: center; }
  .service-section { padding: 90px 21px; grid-template-columns: 1fr; gap: 55px; }
  .service-heading { position: static; }
  .service-steps article { grid-template-columns: 48px 1fr; }
  .contact-section { min-height: auto; padding: 88px 21px; grid-template-columns: 1fr; gap: 55px; }
  .contact-card { padding: 25px 20px; }
  .contact-modal { padding: 14px; }
  .modal-card { max-height: calc(100vh - 28px); padding: 28px 20px 22px; border-radius: 14px; }
  .modal-heading { padding-right: 38px; }
  .modal-contact { grid-template-columns: 1fr; gap: 14px; }
  .qr-frame { width: min(270px, 100%); margin: 0 auto; }
  .phone-card { padding: 22px; text-align: center; }
  .phone-card > a:not(.call-button) { font-size: 28px; }
  .download-hero { min-height: auto; padding: 70px 21px 100px; grid-template-columns: 1fr; gap: 75px; }
  .download-copy h1 { font-size: clamp(44px, 12vw, 62px); }
  .download-copy > p:not(.section-kicker) { font-size: 15px; }
  .windows-download-button { min-height: 72px; }
  .windows-download-button strong { font-size: 18px; }
  .download-meta { grid-template-columns: 1fr; }
  .download-meta > span { padding: 13px 0; border-right: 0; border-bottom: 1px solid rgba(211, 247, 240, .13); }
  .download-preview { width: 100%; }
  .download-window { transform: none; }
  .download-window img { aspect-ratio: 1.35 / 1; object-position: left center; }
  .download-ready { right: -2px; }
  .download-steps { grid-template-columns: 1fr; }
  .download-steps > div { padding: 34px 21px; border-right: 0; border-bottom: 1px solid var(--line); }
  .download-support { padding: 80px 21px; align-items: flex-start; flex-direction: column; gap: 40px; }
  .support-actions { width: 100%; align-items: stretch; flex-direction: column; }
  .support-actions a:first-child { justify-content: center; }
  .support-actions a:last-child { align-self: center; }
  footer { padding: 42px 21px; grid-template-columns: 1fr; justify-items: center; gap: 24px; text-align: center; }
  footer nav { flex-wrap: wrap; justify-content: center; }
  footer > p, .footer-meta { order: initial; }
  .footer-meta { justify-items: center; }
}
@media (max-width: 430px) {
  .brand-symbol { width: 39px; height: 36px; }
  .brand-text strong { font-size: 16px; }
  .hero h1 { font-size: 44px; }
  .hero-footnote { align-items: flex-start; }
  .business-strip div { padding: 24px 16px; grid-template-columns: 1fr; }
  .business-strip div strong { grid-row: auto; margin-bottom: 8px; }
}