:root {
  --blue: #0867f5;
  --blue-deep: #0647d7;
  --blue-soft: #eaf3ff;
  --cyan: #17b5ef;
  --ink: #101b35;
  --muted: #65718a;
  --line: #e4eaf2;
  --surface: #f5f8fc;
  --white: #fff;
  --radius: 22px;
  --shadow: 0 20px 60px rgba(12, 43, 104, .1);
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 82px; }
body {
  margin: 0;
  overflow-x: clip;
  color: var(--ink);
  background: var(--white);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; }
button { color: inherit; font: inherit; }
.container { width: min(calc(100% - 48px), var(--container)); margin-inline: auto; }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: 76px;
  background: rgba(255,255,255,.82);
  border-bottom: 1px solid rgba(226,233,243,.7);
  backdrop-filter: blur(18px);
  transition: box-shadow .25s ease, background .25s ease;
}
.site-header.scrolled { background: rgba(255,255,255,.94); box-shadow: 0 8px 30px rgba(15,48,93,.08); }
.nav-wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 800; letter-spacing: .02em; }
.brand-mark {
  position: relative;
  width: 45px;
  height: 38px;
  flex: 0 0 auto;
}
.brand-mark img { width: 100%; height: 100%; object-fit: contain; }
.brand-name { font-size: 19px; }
.main-nav { display: flex; align-items: center; gap: 37px; color: #4c5872; font-size: 14px; font-weight: 600; }
.main-nav a { position: relative; padding: 27px 0 25px; transition: color .2s; }
.main-nav a::after { content: ""; position: absolute; left: 50%; bottom: 17px; width: 0; height: 2px; border-radius: 2px; background: var(--blue); transform: translateX(-50%); transition: width .2s; }
.main-nav a:hover, .main-nav a.active { color: var(--blue); }
.main-nav a:hover::after, .main-nav a.active::after { width: 18px; }
.menu-button { display: none; width: 42px; height: 42px; border: 0; background: transparent; padding: 10px; cursor: pointer; }
.menu-button span { display: block; width: 22px; height: 2px; margin: 5px auto; background: var(--ink); border-radius: 2px; transition: .25s; }

.hero {
  position: relative;
  min-height: 740px;
  padding: 76px 0 0;
  overflow: hidden;
  background: linear-gradient(120deg, #f8fbff 0%, #eef6ff 54%, #f9fcff 100%);
}
.hero::after { content: ""; position: absolute; inset: auto -10% -70% 42%; height: 100%; background: radial-gradient(circle, rgba(9,103,245,.13), transparent 60%); }
.hero-grid, .contact-grid { position: absolute; inset: 0; opacity: .38; background-image: linear-gradient(rgba(93,137,201,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(93,137,201,.08) 1px, transparent 1px); background-size: 56px 56px; mask-image: linear-gradient(to right, transparent, #000 35%, #000); }
.orb { position: absolute; border-radius: 50%; filter: blur(3px); }
.orb-one { width: 260px; height: 260px; right: 5%; top: 8%; background: rgba(31,183,239,.08); }
.orb-two { width: 120px; height: 120px; left: 45%; bottom: 8%; border: 20px solid rgba(8,103,245,.05); }
.hero-layout { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr .96fr; align-items: center; min-height: 620px; gap: 55px; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 20px; color: var(--blue); font-size: 13px; font-weight: 700; letter-spacing: .15em; }
.eyebrow > span { width: 28px; height: 2px; background: currentColor; }
.hero h1 { margin: 0; font-size: clamp(45px, 5vw, 68px); line-height: 1.18; letter-spacing: -.045em; }
.hero h1 span { color: var(--blue); }
.hero-lead { max-width: 610px; margin: 26px 0 33px; color: var(--muted); font-size: 17px; line-height: 1.95; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 15px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 16px; min-height: 50px; padding: 0 27px; border: 1px solid transparent; border-radius: 8px; font-size: 14px; font-weight: 700; transition: transform .2s, box-shadow .2s, background .2s; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: linear-gradient(120deg, var(--blue-deep), #118df9); box-shadow: 0 12px 30px rgba(6,91,231,.24); }
.button-primary:hover { box-shadow: 0 15px 35px rgba(6,91,231,.32); }
.button svg { width: 19px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.button-ghost { border-color: #cad7e8; background: rgba(255,255,255,.65); }
.button-ghost:hover { background: #fff; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 23px; margin-top: 36px; color: #606c83; font-size: 12px; }
.hero-tags span { display: flex; align-items: center; gap: 6px; }
.hero-tags i { display: grid; place-items: center; width: 17px; height: 17px; border-radius: 50%; color: var(--blue); background: #dcecff; font-size: 10px; font-style: normal; }
.hero-visual { position: relative; height: 480px; }
.visual-glow { position: absolute; width: 390px; height: 390px; left: 50%; top: 50%; border-radius: 50%; background: radial-gradient(circle, rgba(15,150,248,.28), rgba(8,103,245,.07) 52%, transparent 70%); transform: translate(-48%, -52%); }
.code-window { position: absolute; z-index: 2; width: 440px; height: 267px; left: 8%; top: 18%; overflow: hidden; border: 1px solid rgba(178,206,236,.8); border-radius: 14px; background: rgba(255,255,255,.82); box-shadow: 0 30px 70px rgba(34,82,141,.17); backdrop-filter: blur(20px); transform: perspective(900px) rotateY(-5deg) rotateX(2deg); }
.window-bar { height: 43px; display: flex; align-items: center; justify-content: space-between; padding: 0 15px; color: #8a96a9; background: rgba(244,248,253,.9); border-bottom: 1px solid #e5edf5; font: 10px ui-monospace, monospace; }
.window-dots { display: flex; gap: 5px; }.window-dots i { width: 7px; height: 7px; border-radius: 50%; background: #ff6f70; }.window-dots i:nth-child(2) { background: #fbc34a; }.window-dots i:nth-child(3) { background: #49c878; }
.code-body { display: flex; padding: 25px 20px; font: 12px/2.05 ui-monospace, SFMono-Regular, Menlo, monospace; }
.code-rail { width: 34px; display: flex; flex-direction: column; color: #b1bdcc; }
.code-lines { color: #56657b; }.code-lines p { margin: 0; }.code-lines .indent { padding-left: 20px; }.code-lines em, .code-lines b { color: #735ee9; font-style: normal; }.code-lines strong { color: #1c8be6; }.code-lines q { color: #00a189; }.code-lines span { color: #e07f36; }
.device-card { position: absolute; z-index: 3; background: #fff; box-shadow: 0 20px 45px rgba(26,74,131,.18); }
.device-desktop { width: 190px; height: 130px; right: 0; bottom: 14%; padding: 8px; border: 1px solid #e1e8f0; border-radius: 10px; }
.device-screen { height: 100%; padding: 17px 12px; border-radius: 5px; background: linear-gradient(135deg, #0968ef, #12b6ef); }
.device-screen span, .device-screen b, .device-screen i, .device-phone span, .device-phone b, .device-phone i { display: block; border-radius: 5px; background: rgba(255,255,255,.83); }
.device-screen span { width: 50%; height: 7px; }.device-screen b { width: 80%; height: 5px; margin-top: 9px; opacity: .5; }.device-screen i { width: 100%; height: 38px; margin-top: 12px; opacity: .34; }
.device-base { position: absolute; width: 75px; height: 8px; left: 50%; bottom: -9px; border-radius: 0 0 8px 8px; background: #cdd8e5; transform: translateX(-50%); }
.device-phone { width: 90px; height: 174px; left: 1%; bottom: 3%; padding: 23px 9px 16px; border: 2px solid #fff; border-radius: 17px; background: linear-gradient(145deg, #0870f2, #14bcec); transform: rotate(-7deg); }
.phone-speaker { position: absolute; top: 10px; left: 50%; width: 24px; height: 3px; border-radius: 3px; background: rgba(255,255,255,.6); transform: translateX(-50%); }.device-phone span { width: 65%; height: 6px; }.device-phone b { width: 90%; height: 4px; margin-top: 8px; opacity: .55; }.device-phone i { height: 72px; margin-top: 11px; opacity: .25; }.phone-button { position: absolute; width: 5px; height: 5px; left: 50%; bottom: 6px; border: 1px solid rgba(255,255,255,.8); border-radius: 50%; transform: translateX(-50%); }
.floating-chip { position: absolute; z-index: 4; display: flex; align-items: center; gap: 8px; padding: 10px 13px; color: #3d4f69; border: 1px solid rgba(207,220,236,.9); border-radius: 8px; background: rgba(255,255,255,.9); box-shadow: 0 12px 30px rgba(24,63,112,.12); font-size: 10px; font-weight: 700; }.floating-chip span { display: grid; place-items: center; width: 22px; height: 22px; color: #fff; border-radius: 6px; background: var(--blue); font-size: 9px; }.chip-one { right: 4%; top: 8%; }.chip-two { right: 27%; bottom: 2%; }
.scroll-hint { position: absolute; z-index: 4; left: 50%; bottom: 20px; display: flex; flex-direction: column; align-items: center; gap: 5px; color: #8190a4; font-size: 9px; letter-spacing: .12em; transform: translateX(-50%); }.scroll-hint span { width: 16px; height: 25px; border: 1px solid #aebdce; border-radius: 10px; }.scroll-hint span::after { content: ""; display: block; width: 2px; height: 5px; margin: 5px auto; border-radius: 2px; background: var(--blue); animation: scroll 1.5s infinite; }
@keyframes scroll { 50% { transform: translateY(5px); opacity: .35; } }

.section { padding: 105px 0; }
.section-heading { max-width: 680px; margin: 0 auto 58px; text-align: center; }.section-heading .eyebrow { justify-content: center; }.section-heading h2, .advantage-copy h2, .contact-copy h2 { margin: 0; font-size: clamp(31px, 3.6vw, 45px); line-height: 1.25; letter-spacing: -.035em; }.section-heading > p:last-child { margin: 18px auto 0; color: var(--muted); line-height: 1.8; }
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.service-card { position: relative; min-height: 407px; padding: 32px 25px 27px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; transition: transform .3s, box-shadow .3s, border-color .3s; }.service-card::after { content: ""; position: absolute; inset: auto 0 0; height: 3px; background: linear-gradient(90deg, var(--blue), var(--cyan)); transform: scaleX(0); transform-origin: left; transition: transform .3s; }.service-card:hover { transform: translateY(-8px); border-color: #c7dcfa; box-shadow: var(--shadow); }.service-card:hover::after { transform: scaleX(1); }
.service-icon { display: grid; place-items: center; width: 57px; height: 57px; margin-bottom: 39px; border-radius: 14px; color: var(--blue); background: var(--blue-soft); }.service-icon svg { width: 31px; fill: none; stroke: currentColor; stroke-width: 1.45; stroke-linecap: round; stroke-linejoin: round; }
.service-num { position: absolute; top: 29px; right: 24px; color: #cad4e1; font: 700 13px ui-monospace, monospace; }.service-card h3 { margin: 0 0 13px; font-size: 20px; }.service-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.85; }.service-card ul { margin: 22px 0 0; padding: 19px 0 0; border-top: 1px solid #edf1f6; list-style: none; }.service-card li { position: relative; margin: 9px 0; padding-left: 16px; color: #68768c; font-size: 12px; }.service-card li::before { content: ""; position: absolute; left: 0; top: 7px; width: 5px; height: 5px; border-radius: 50%; background: var(--blue); }

.advantages { position: relative; overflow: hidden; color: #fff; background: #071a38; }.advantages::before { content: ""; position: absolute; width: 600px; height: 600px; left: -150px; top: -250px; background: radial-gradient(circle, rgba(9,118,242,.3), transparent 65%); }.advantages::after { content: ""; position: absolute; inset: 0; opacity: .08; background-image: linear-gradient(#fff 1px, transparent 1px), linear-gradient(90deg, #fff 1px, transparent 1px); background-size: 64px 64px; mask-image: linear-gradient(to right, #000, transparent 65%); }
.advantage-layout { position: relative; z-index: 2; display: grid; grid-template-columns: .75fr 1.25fr; gap: 100px; align-items: center; }.eyebrow-light { color: #5aa9ff; }.advantage-copy h2 { line-height: 1.35; }.advantage-copy > p:last-of-type { margin: 25px 0 28px; color: #99a9c0; line-height: 1.9; }.text-link { color: #6cb6ff; font-size: 13px; font-weight: 700; }.text-link span { margin-left: 8px; transition: margin .2s; }.text-link:hover span { margin-left: 14px; }
.advantage-list { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }.advantage-item { display: flex; gap: 18px; min-height: 150px; padding: 27px 25px; border: 1px solid rgba(146,180,222,.15); border-radius: 17px; background: rgba(255,255,255,.045); transition: background .25s, transform .25s; }.advantage-item:hover { background: rgba(255,255,255,.08); transform: translateY(-4px); }.advantage-item > span { color: #3d91f3; font: 700 11px ui-monospace, monospace; }.advantage-item h3 { margin: 0 0 10px; font-size: 17px; }.advantage-item p { margin: 0; color: #96a8bf; font-size: 12px; line-height: 1.8; }

.process { background: var(--surface); }.process-track { position: relative; display: grid; grid-template-columns: repeat(5, 1fr); }.process-track::before { content: ""; position: absolute; left: 10%; right: 10%; top: 47px; border-top: 1px dashed #b9c9de; }.process-step { position: relative; z-index: 2; text-align: center; }.process-step > span { display: inline-block; margin-bottom: 15px; color: #9aa9bb; font: 700 10px ui-monospace, monospace; }.process-icon { display: grid; place-items: center; width: 67px; height: 67px; margin: 0 auto 22px; color: var(--blue); border: 1px solid #cee0f6; border-radius: 50%; background: #fff; box-shadow: 0 10px 25px rgba(19,66,123,.07); font-size: 22px; font-weight: 300; transition: .25s; }.process-step:hover .process-icon { color: #fff; border-color: var(--blue); background: var(--blue); transform: scale(1.07); }.process-step h3 { margin: 0 0 8px; font-size: 16px; }.process-step p { margin: 0; color: var(--muted); font-size: 12px; }

.contact { position: relative; overflow: hidden; color: #fff; background: linear-gradient(120deg, #064fd7, #0587ee); }.contact::before { content: ""; position: absolute; width: 420px; height: 420px; right: -80px; top: -200px; border: 70px solid rgba(255,255,255,.06); border-radius: 50%; }.contact-grid { opacity: .12; mask-image: linear-gradient(to left, #000, transparent); }.contact-wrap { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr 1fr; gap: 100px; align-items: center; padding-top: 88px; padding-bottom: 88px; }.contact-copy > p:last-of-type { max-width: 530px; margin: 23px 0 0; color: rgba(255,255,255,.75); line-height: 1.9; }.contact .eyebrow-light { color: #a9d5ff; }
.contact-panel { padding: 30px 34px 22px; border: 1px solid rgba(255,255,255,.24); border-radius: 20px; background: rgba(255,255,255,.12); box-shadow: 0 20px 50px rgba(0,51,150,.18); backdrop-filter: blur(15px); }.contact-item { display: flex; align-items: center; gap: 18px; padding: 15px 0; border-bottom: 1px solid rgba(255,255,255,.15); }.contact-icon { display: grid; place-items: center; width: 42px; height: 42px; flex: 0 0 auto; border-radius: 11px; background: rgba(255,255,255,.14); }.contact-icon svg { width: 21px; fill: none; stroke: #fff; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }.contact-item div { display: flex; flex-direction: column; gap: 5px; }.contact-item small { color: rgba(255,255,255,.62); font-size: 11px; }.contact-item strong { font-size: 16px; letter-spacing: .03em; }.placeholder-note { margin: 15px 0 0; color: rgba(255,255,255,.52); font-size: 10px; text-align: right; }

.site-footer { padding: 34px 0 20px; background: #fff; }.footer-main { display: flex; align-items: center; justify-content: space-between; padding-bottom: 28px; }.brand-footer > span:last-child { display: flex; flex-direction: column; gap: 3px; }.brand-footer b { font-size: 17px; }.brand-footer small { color: #8b96a8; font-size: 9px; font-weight: 500; }.footer-nav { display: flex; gap: 29px; color: #65718a; font-size: 12px; }.footer-nav a:hover { color: var(--blue); }.footer-bottom { display: flex; justify-content: space-between; padding-top: 18px; color: #9aa4b4; border-top: 1px solid #e8edf3; font-size: 10px; }.footer-bottom p { margin: 0; }.footer-bottom a:hover { color: var(--blue); }
.back-to-top { position: fixed; z-index: 90; right: 24px; bottom: 24px; display: grid; place-items: center; width: 42px; height: 42px; color: #fff; border-radius: 50%; background: var(--blue); box-shadow: 0 10px 25px rgba(8,103,245,.3); opacity: 0; pointer-events: none; transform: translateY(10px); transition: .25s; }.back-to-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.reveal { opacity: 1; transform: none; }

@media (max-width: 1000px) {
  .hero-layout { grid-template-columns: 1fr .8fr; gap: 20px; }
  .hero-visual { transform: scale(.82); transform-origin: center; }
  .service-grid { grid-template-columns: 1fr 1fr; }.service-card { min-height: 370px; }
  .advantage-layout { gap: 50px; }.contact-wrap { gap: 55px; }
}

@media (max-width: 760px) {
  .container { width: min(calc(100% - 36px), var(--container)); }
  .site-header { height: 68px; }.brand-mark { width: 41px; height: 34px; }.brand-name { font-size: 17px; }
  .menu-button { display: block; }.menu-button.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }.menu-button.open span:nth-child(2) { opacity: 0; }.menu-button.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .main-nav { position: absolute; left: 18px; right: 18px; top: 62px; display: flex; flex-direction: column; align-items: stretch; gap: 0; padding: 10px 20px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.98); box-shadow: var(--shadow); opacity: 0; pointer-events: none; transform: translateY(-8px); transition: .2s; }.main-nav.open { opacity: 1; pointer-events: auto; transform: none; }.main-nav a { padding: 14px 2px; border-bottom: 1px solid #eef2f6; }.main-nav a:last-child { border: 0; }.main-nav a::after { display: none; }
  .hero { min-height: auto; padding-top: 68px; }.hero-layout { display: flex; flex-direction: column; min-height: auto; padding-top: 78px; padding-bottom: 58px; text-align: center; }.hero-copy { display: flex; flex-direction: column; align-items: center; }.hero h1 { font-size: clamp(39px, 12vw, 53px); }.hero-lead { margin: 22px 0 27px; font-size: 15px; line-height: 1.8; }.hero-actions { justify-content: center; }.hero-tags { justify-content: center; gap: 13px 17px; margin-top: 28px; }.hero-visual { width: 100%; height: 405px; margin-top: 10px; transform: scale(.9); }.code-window { left: 50%; width: 390px; transform: translateX(-50%) perspective(900px) rotateY(-4deg); }.device-desktop { right: 0; }.device-phone { left: 1%; }.scroll-hint { display: none; }
  .section { padding: 78px 0; }.section-heading { margin-bottom: 42px; }.section-heading h2, .advantage-copy h2, .contact-copy h2 { font-size: 32px; }.section-heading > p:last-child { font-size: 14px; }
  .advantage-layout { grid-template-columns: 1fr; gap: 42px; }.advantage-copy { text-align: center; }.advantage-copy .eyebrow { justify-content: center; }.advantage-copy > p:last-of-type { font-size: 14px; }
  .contact-wrap { grid-template-columns: 1fr; gap: 38px; padding-top: 74px; padding-bottom: 74px; }.contact-copy { text-align: center; }.contact-copy .eyebrow { justify-content: center; }.contact-copy > p:last-of-type { font-size: 14px; }
  .process-track { grid-template-columns: 1fr 1fr; gap: 35px 10px; }.process-track::before { display: none; }.process-step:last-child { grid-column: 1 / -1; }.footer-main { flex-direction: column; gap: 25px; }.footer-nav { flex-wrap: wrap; justify-content: center; gap: 15px 24px; }.footer-bottom { flex-direction: column; align-items: center; gap: 9px; text-align: center; }
}

@media (max-width: 520px) {
  .hero-layout { padding-top: 62px; }.hero h1 { font-size: 40px; }.hero-actions { width: 100%; }.button { width: 100%; }.hero-tags { font-size: 11px; }
  .hero-visual { height: 350px; margin-top: 4px; transform: scale(.76); transform-origin: top center; margin-bottom: -70px; }.code-window { top: 17%; }.chip-one { right: 1%; }
  .service-grid, .advantage-list { grid-template-columns: 1fr; }.service-card { min-height: auto; }.advantage-item { min-height: auto; }
  .process-track { gap: 32px 4px; }.process-step p { max-width: 130px; margin-inline: auto; line-height: 1.6; }
  .contact-panel { padding: 25px 22px 18px; }.contact-item strong { font-size: 15px; }
  .back-to-top { right: 16px; bottom: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}