:root {
  --blue: #075ee8;
  --blue-dark: #084bb4;
  --cyan: #05a7c8;
  --ink: #101b2d;
  --muted: #5d6879;
  --line: #dfe6ee;
  --soft: #f4f8fb;
  --green: #31a477;
  --white: #ffffff;
  --container: 1180px;
  --shadow: 0 14px 38px rgba(16, 27, 45, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; }
button, input, select, textarea { font: inherit; }
button { color: inherit; }
.container { width: min(calc(100% - 48px), var(--container)); margin-inline: auto; }
.section { padding: 104px 0; }

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  height: 76px;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(223, 230, 238, 0.8);
  backdrop-filter: blur(18px);
}
.header-inner { height: 100%; display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex: none; }
.brand-mark { width: 42px; height: 42px; display: inline-grid; place-items: center; flex: none; }
.brand-mark img { width: 100%; height: 100%; object-fit: contain; }
.brand-copy { display: grid; line-height: 1.05; }
.brand-copy strong { font-size: 21px; font-weight: 780; white-space: nowrap; }
.brand-copy small { margin-top: 5px; color: #7e8794; font-size: 8px; font-weight: 700; letter-spacing: 0; }
.site-nav { display: flex; align-items: center; gap: 36px; margin-left: auto; height: 100%; }
.site-nav a { position: relative; display: grid; place-items: center; height: 100%; color: #303a49; font-size: 14px; font-weight: 600; }
.site-nav a::after { content: ""; position: absolute; left: 50%; bottom: 0; width: 0; height: 2px; background: var(--blue); transform: translateX(-50%); transition: width .2s ease; }
.site-nav a:hover, .site-nav a.active { color: var(--blue); }
.site-nav a.active::after, .site-nav a:hover::after { width: 24px; }
.button { min-height: 46px; padding: 0 22px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; border: 1px solid transparent; border-radius: 6px; font-weight: 700; cursor: pointer; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button svg { width: 17px; height: 17px; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: var(--blue); box-shadow: 0 9px 22px rgba(7, 94, 232, .18); }
.button-primary:hover { background: var(--blue-dark); box-shadow: 0 12px 26px rgba(7, 94, 232, .24); }
.button-secondary { color: var(--ink); background: rgba(255,255,255,.8); border-color: #cbd5e1; }
.button-secondary:hover { background: #fff; border-color: #9eabba; }
.header-cta { min-height: 42px; padding-inline: 18px; font-size: 14px; }
.language-switch { min-width: 54px; height: 36px; padding: 0 10px; display: inline-flex; align-items: center; justify-content: center; gap: 6px; color: #435064; background: #fff; border: 1px solid #dbe3ec; border-radius: 5px; font-size: 12px; font-weight: 750; transition: color .2s ease, border-color .2s ease, background .2s ease; }
.language-switch:hover { color: var(--blue); background: #f5f9ff; border-color: #a9c7ef; }
.language-switch svg { width: 15px; height: 15px; }
.icon-button { display: grid; place-items: center; width: 42px; height: 42px; border: 0; border-radius: 6px; background: transparent; cursor: pointer; }
.menu-toggle { display: none; }
.menu-toggle svg { width: 24px; height: 24px; }

.hero { position: relative; min-height: 640px; overflow: hidden; background: #eef4f8 url("assets/hero-meeting.webp") center / cover no-repeat; }
.hero-shade { position: absolute; inset: 0 auto 0 0; width: 62%; background: rgba(250, 252, 254, .96); clip-path: polygon(0 0, 80% 0, 100% 100%, 0 100%); }
.hero-inner { position: relative; z-index: 2; min-height: 640px; display: flex; align-items: center; }
.hero-copy { width: 540px; padding: 52px 0 66px; }
.eyebrow { margin: 0 0 15px; display: flex; align-items: center; gap: 9px; color: var(--blue); font-size: 13px; font-weight: 750; letter-spacing: 0; }
.eyebrow > span { width: 26px; height: 2px; background: var(--cyan); }
.hero h1 { margin: 0; font-size: 64px; line-height: 1.08; letter-spacing: 0; font-weight: 800; }
.hero-slogan { margin: 16px 0 14px; max-width: 520px; font-size: 29px; line-height: 1.4; font-weight: 750; }
.hero-description { max-width: 520px; margin: 0; color: #4c5868; font-size: 17px; line-height: 1.9; }
.hero-actions { display: flex; gap: 14px; margin-top: 32px; }
.hero-trust { display: flex; gap: 24px; margin-top: 32px; color: #667182; font-size: 13px; }
.hero-trust span { display: flex; align-items: center; gap: 7px; }
.hero-trust svg { width: 16px; color: var(--green); }
.scroll-hint { position: absolute; z-index: 3; left: 50%; bottom: 18px; width: 38px; height: 38px; display: grid; place-items: center; color: #fff; background: rgba(16, 27, 45, .58); border-radius: 50%; transform: translateX(-50%); }
.scroll-hint svg { width: 18px; }

.section-heading { margin-bottom: 46px; }
.section-heading h2 { margin: 0; font-size: 38px; line-height: 1.32; font-weight: 770; }
.split-heading { display: grid; grid-template-columns: 1.2fr .8fr; align-items: end; gap: 70px; }
.split-heading > p, .centered-heading > p:last-child { margin: 0; color: var(--muted); }
.centered-heading { max-width: 720px; margin-inline: auto; text-align: center; }
.centered-heading .eyebrow { justify-content: center; }
.centered-heading h2 { margin-bottom: 14px; }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.service-card { position: relative; min-height: 470px; padding: 35px 32px 30px; overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: 8px; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.service-card:hover { transform: translateY(-6px); border-color: #b8c9df; box-shadow: var(--shadow); }
.service-card-featured { background: var(--ink); border-color: var(--ink); color: #fff; }
.service-card-featured::before { content: ""; position: absolute; right: -60px; bottom: -76px; width: 210px; height: 210px; border: 28px solid rgba(5, 167, 200, .16); border-radius: 50%; }
.service-number { position: absolute; right: 28px; top: 25px; color: #dfe6ee; font-size: 44px; line-height: 1; font-weight: 800; }
.service-card-featured .service-number { color: rgba(255,255,255,.1); }
.service-icon { width: 58px; height: 58px; display: grid; place-items: center; color: var(--blue); background: #e9f2ff; border-radius: 6px; }
.service-icon svg { width: 27px; height: 27px; }
.service-card-featured .service-icon { color: #fff; background: var(--blue); }
.service-card h3 { margin: 27px 0 10px; font-size: 23px; }
.service-card > p { min-height: 56px; margin: 0; color: var(--muted); font-size: 14px; }
.service-card-featured > p { color: #b9c3d0; }
.service-card ul { margin: 25px 0; padding: 20px 0 20px 18px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); color: #445164; font-size: 14px; }
.service-card li + li { margin-top: 7px; }
.service-card-featured ul { color: #d2d8e0; border-color: rgba(255,255,255,.12); }
.service-card > a { position: relative; z-index: 1; display: inline-flex; align-items: center; gap: 7px; color: var(--blue); font-size: 14px; font-weight: 700; }
.service-card > a svg { width: 16px; }
.service-card-featured > a { color: #65d8ea; }
.capability-strip { margin-top: 24px; display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 8px 28px rgba(16, 27, 45, .04); }
.capability-strip > div { min-height: 110px; padding: 24px 26px; display: grid; grid-template-columns: 40px 1fr; grid-template-rows: 1fr 1fr; align-items: center; border-right: 1px solid var(--line); }
.capability-strip > div:last-child { border-right: 0; }
.capability-strip svg { grid-row: 1 / 3; width: 25px; color: var(--blue); }
.capability-strip strong { font-size: 18px; line-height: 1.2; }
.capability-strip span { color: var(--muted); font-size: 12px; }

.solutions { background: var(--soft); }
.solution-layout { display: grid; grid-template-columns: 1.05fr .95fr; min-height: 520px; overflow: hidden; background: #fff; border: 1px solid #e0e7ef; border-radius: 8px; box-shadow: var(--shadow); }
.solution-visual { position: relative; min-height: 520px; overflow: hidden; }
.solution-visual img { height: 100%; object-fit: cover; }
.visual-label { position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 30px; display: grid; color: #fff; background: rgba(11, 21, 36, .84); backdrop-filter: blur(10px); }
.visual-label span { color: #7bdbea; font-size: 12px; }
.visual-label strong { margin-top: 3px; font-size: 20px; }
.solution-list { display: grid; grid-template-rows: repeat(4, 1fr); }
.solution-item { position: relative; display: grid; grid-template-columns: 46px 1fr 24px; align-items: center; gap: 15px; padding: 24px 28px; border-bottom: 1px solid var(--line); transition: background .2s ease; }
.solution-item:last-child { border-bottom: 0; }
.solution-item:hover, .solution-item.active { background: #f5f9ff; }
.solution-index { color: #aeb8c5; font-size: 12px; font-weight: 700; }
.solution-item.active .solution-index { color: var(--blue); }
.solution-item h3 { margin: 0 0 4px; font-size: 18px; }
.solution-item p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
.solution-item > svg { width: 19px; color: #9faaba; }
.solution-item.active > svg { color: var(--blue); }

.process { background: #fff; }
.process-track { position: relative; display: grid; grid-template-columns: repeat(5, 1fr); gap: 28px; }
.process-track::before { content: ""; position: absolute; left: 6%; right: 6%; top: 27px; border-top: 1px dashed #bfcbd9; }
.process-track article { position: relative; text-align: center; }
.process-top { position: relative; z-index: 1; height: 92px; display: flex; flex-direction: column; align-items: center; gap: 22px; }
.process-top span { width: 54px; height: 54px; display: grid; place-items: center; color: #fff; background: var(--blue); border: 8px solid #fff; border-radius: 50%; font-size: 13px; font-weight: 750; box-shadow: 0 0 0 1px #dce5ef; }
.process-top svg { width: 29px; height: 29px; color: var(--cyan); }
.process-track h3 { margin: 20px 0 5px; font-size: 17px; }
.process-track p { margin: 0; color: var(--muted); font-size: 13px; }

.about { padding-top: 60px; background: #fff; }
.about-grid { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 80px; }
.about-image { position: relative; height: 520px; }
.about-image img { height: 100%; object-fit: cover; border-radius: 8px; }
.about-badge { position: absolute; right: -34px; bottom: 34px; min-width: 255px; padding: 22px 24px; display: flex; align-items: center; gap: 15px; color: #fff; background: var(--ink); border-left: 4px solid var(--cyan); box-shadow: var(--shadow); }
.about-badge svg { width: 30px; color: #64d4e5; }
.about-badge span { display: grid; color: #b8c3d0; font-size: 12px; }
.about-badge strong { color: #fff; font-size: 18px; }
.about-copy h2 { margin: 0 0 24px; font-size: 38px; line-height: 1.35; }
.about-copy > p:not(.eyebrow) { margin: 0 0 16px; color: var(--muted); }
.about-values { margin-top: 30px; display: grid; gap: 13px; }
.about-values > div { display: flex; align-items: center; gap: 16px; }
.about-values svg { width: 23px; color: var(--blue); }
.about-values span { display: grid; color: var(--muted); font-size: 12px; }
.about-values strong { color: var(--ink); font-size: 15px; }

.contact { padding: 84px 0; background: var(--ink); }
.contact-shell { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 90px; }
.contact-copy { color: #fff; }
.eyebrow-light { color: #7ce0ec; }
.contact-copy h2 { margin: 0 0 20px; font-size: 40px; line-height: 1.35; }
.contact-copy > p:not(.eyebrow) { color: #adb9c8; }
.contact-meta { margin-top: 34px; display: grid; gap: 12px; }
.contact-meta a { display: flex; align-items: center; gap: 14px; color: #e2e9f0; }
.contact-meta svg { width: 21px; color: #65d8e8; }
.contact-meta span { display: grid; }
.contact-meta small { color: #7f8d9f; font-size: 11px; }
.contact-form { padding: 34px; background: #fff; border-radius: 8px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form label { display: grid; gap: 7px; margin-bottom: 17px; color: #2e3a4a; font-size: 13px; font-weight: 700; }
.contact-form input, .contact-form select, .contact-form textarea { width: 100%; padding: 12px 14px; color: var(--ink); background: #f8fafc; border: 1px solid #dbe3ec; border-radius: 5px; outline: none; font-size: 14px; transition: border .2s ease, box-shadow .2s ease; }
.contact-form textarea { min-height: 108px; resize: vertical; }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(7, 94, 232, .09); }
.contact-form .button { width: 100%; }
.form-note { margin: 10px 0 0; color: #8b95a3; font-size: 11px; text-align: center; }

.site-footer { background: #0a1322; color: #9ba8b9; }
.footer-main { min-height: 128px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 30px; }
.footer-brand { color: #fff; }
.footer-main > p { margin: 0; font-size: 13px; }
.footer-main nav { display: flex; gap: 25px; font-size: 13px; }
.footer-main nav a:hover { color: #fff; }
.footer-bottom { padding: 18px 0; display: flex; justify-content: space-between; border-top: 1px solid rgba(255,255,255,.08); font-size: 11px; }
.back-to-top { position: fixed; z-index: 30; right: 24px; bottom: 24px; color: #fff; background: var(--blue); box-shadow: 0 8px 20px rgba(7, 94, 232, .3); opacity: 0; pointer-events: none; transform: translateY(10px); transition: .2s ease; }
.back-to-top.visible { opacity: 1; pointer-events: auto; transform: none; }
.back-to-top svg { width: 18px; }

@media (max-width: 1020px) {
  .header-inner { gap: 18px; }
  .site-nav { gap: 20px; }
  .site-nav a { font-size: 13px; }
  .header-cta { display: none; }
  .hero-shade { width: 76%; }
  .service-card { padding-inline: 24px; }
  .about-grid { gap: 48px; }
  .contact-shell { gap: 50px; }
}

@media (max-width: 820px) {
  .container { width: min(calc(100% - 32px), var(--container)); }
  .section { padding: 76px 0; }
  .site-header { height: 68px; }
  .language-switch { margin-left: auto; }
  .menu-toggle { display: grid; flex: none; }
  .site-nav { position: fixed; inset: 68px 0 auto; height: auto; display: grid; align-content: start; gap: 0; padding: 14px 20px 24px; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 14px 28px rgba(16,27,45,.1); opacity: 0; visibility: hidden; transform: translateY(-10px); transition: .2s ease; }
  .site-nav.open { opacity: 1; visibility: visible; transform: none; }
  .site-nav a { height: 50px; justify-content: start; border-bottom: 1px solid #eef2f6; }
  .site-nav a::after { display: none; }
  .hero, .hero-inner { min-height: 650px; }
  .hero { background-position: 59% center; }
  .hero-shade { width: 100%; background: rgba(250, 252, 254, .88); clip-path: none; }
  .hero-copy { width: min(100%, 560px); padding-top: 84px; }
  .hero h1 { font-size: 54px; }
  .hero-slogan { font-size: 26px; }
  .split-heading { grid-template-columns: 1fr; gap: 18px; }
  .section-heading h2, .about-copy h2 { font-size: 32px; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 0; }
  .service-card > p { min-height: 0; }
  .capability-strip { grid-template-columns: 1fr 1fr; }
  .capability-strip > div:nth-child(2) { border-right: 0; }
  .capability-strip > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .solution-layout { grid-template-columns: 1fr; }
  .solution-visual { min-height: 400px; }
  .process-track { grid-template-columns: 1fr 1fr; gap: 40px 24px; }
  .process-track::before { display: none; }
  .process-track article:last-child { grid-column: 1 / 3; max-width: 260px; justify-self: center; }
  .about-grid { grid-template-columns: 1fr; }
  .about-image { height: 430px; }
  .about-badge { right: 20px; }
  .contact-shell { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; padding: 34px 0; gap: 16px; }
  .footer-main nav { flex-wrap: wrap; }
}

@media (max-width: 520px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .section { padding: 64px 0; }
  .brand-copy strong { font-size: 18px; }
  .brand-mark { width: 38px; height: 38px; }
  .hero, .hero-inner { min-height: 640px; }
  .hero { background-position: 56% center; }
  .hero-shade { background: rgba(248, 251, 253, .91); }
  .hero-copy { padding: 54px 0 68px; }
  .hero h1 { font-size: 45px; }
  .hero-slogan { margin-top: 12px; font-size: 23px; }
  .hero-description { font-size: 15px; line-height: 1.8; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-trust { flex-wrap: wrap; gap: 8px 18px; margin-top: 24px; }
  .scroll-hint { display: none; }
  .section-heading { margin-bottom: 32px; }
  .section-heading h2, .about-copy h2 { font-size: 28px; }
  .split-heading { gap: 14px; }
  .service-card { padding: 28px 24px 26px; }
  .service-card h3 { font-size: 21px; }
  .capability-strip > div { min-height: 96px; padding: 19px 14px; grid-template-columns: 34px 1fr; }
  .capability-strip strong { font-size: 16px; }
  .solution-visual { min-height: 300px; }
  .visual-label { padding: 20px; }
  .solution-item { grid-template-columns: 34px 1fr 18px; gap: 9px; padding: 19px 16px; }
  .process-track { gap: 34px 14px; }
  .process-track p { padding-inline: 4px; }
  .about { padding-top: 20px; }
  .about-image { height: 350px; }
  .about-badge { left: 16px; right: 16px; bottom: 16px; min-width: 0; }
  .contact { padding: 64px 0; }
  .contact-copy h2 { font-size: 30px; }
  .contact-form { padding: 24px 18px; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .footer-main nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 22px; }
  .footer-bottom { align-items: flex-start; flex-direction: column; gap: 4px; }
  .back-to-top { right: 14px; bottom: 14px; }
}

html[lang="en"] body { font-family: Inter, "Segoe UI", Arial, sans-serif; }
html[lang="en"] .hero h1 { font-size: 58px; }
html[lang="en"] .hero-copy { width: 575px; }
html[lang="en"] .service-card h3 { font-size: 21px; }
html[lang="en"] .contact-copy h2 { font-size: 38px; }

@media (max-width: 520px) {
  html[lang="en"] .hero h1 { font-size: 42px; }
  html[lang="en"] .hero-slogan { font-size: 22px; line-height: 1.35; }
  html[lang="en"] .contact-copy h2 { font-size: 29px; }
}

@media (max-width: 360px) {
  .header-inner { gap: 8px; }
  .language-switch { min-width: 48px; padding-inline: 6px; }
  .menu-toggle { width: 38px; height: 38px; }
  html[lang="en"] .brand { gap: 7px; }
  html[lang="en"] .brand-mark { width: 34px; height: 34px; }
  html[lang="en"] .brand-copy strong { font-size: 15px; }
  html[lang="en"] .brand-copy small { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}