:root {
  --ink: #0e1f36;
  --navy: #07192e;
  --blue: #1060ad;
  --blue-bright: #1c75c9;
  --cyan: #5eb9d5;
  --paper: #f5f8fb;
  --line: #dce5ed;
  --muted: #68798b;
  --white: #fff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif; }
a { color: inherit; text-decoration: none; }
a:focus-visible, summary:focus-visible { outline: 3px solid #68c6e2; outline-offset: 4px; }
[id] { scroll-margin-top: 84px; }
img { display: block; max-width: 100%; }
button, summary { font: inherit; }
.shell { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.utility-bar { height: 34px; color: #aebed0; background: #061426; font-size: 12px; letter-spacing: .04em; }
.utility-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.utility-meta { display: flex; align-items: center; gap: 13px; }
.utility-meta i { width: 1px; height: 12px; background: #3a4a5f; }
.site-header { position: sticky; top: 0; z-index: 30; height: 82px; border-bottom: 1px solid rgba(14,31,54,.08); background: rgba(255,255,255,.95); backdrop-filter: blur(14px); }
.nav-wrap { height: 100%; display: flex; align-items: center; gap: 34px; }
.brand { display: inline-flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-mark { width: 44px; height: 44px; display: grid; place-items: center; color: white; background: var(--blue); transform: skewX(-9deg); }
.brand-mark svg { transform: skewX(9deg); }
.brand > span:last-child { display: grid; gap: 1px; }
.brand strong { color: #0a4f91; font: 800 25px/1 Arial, sans-serif; letter-spacing: .04em; }
.brand small { color: #738195; font: 700 8px/1.3 Arial, sans-serif; letter-spacing: .18em; }
.desktop-nav { display: flex; align-items: stretch; justify-content: center; gap: 30px; margin-left: auto; height: 100%; }
.desktop-nav a { position: relative; display: flex; align-items: center; color: #2c3b4f; font-size: 14px; font-weight: 600; }
.desktop-nav a::after { position: absolute; left: 0; right: 100%; bottom: 0; height: 3px; content: ""; background: var(--blue); transition: right .25s ease; }
.desktop-nav a:hover::after { right: 0; }
.nav-contact { height: 44px; padding: 0 18px; display: inline-flex; align-items: center; gap: 9px; color: white; background: var(--blue); font-size: 14px; font-weight: 700; }
.mobile-menu { display: none; margin-left: auto; position: relative; }
.mobile-menu summary { width: 44px; height: 44px; display: grid; place-items: center; list-style: none; cursor: pointer; background: var(--paper); }
.mobile-menu summary::-webkit-details-marker { display: none; }
.mobile-menu nav { position: absolute; top: 54px; right: 0; min-width: 220px; display: grid; padding: 12px; background: white; box-shadow: 0 20px 50px rgba(7,25,46,.18); }
.mobile-menu nav a { padding: 12px 10px; border-bottom: 1px solid var(--line); }
.hero { position: relative; overflow: hidden; color: white; background: linear-gradient(112deg, #07192e 0%, #0a2542 58%, #0a3156 100%); }
.hero-grid { position: absolute; inset: 0; opacity: .23; background-image: linear-gradient(rgba(108,155,198,.18) 1px, transparent 1px), linear-gradient(90deg, rgba(108,155,198,.18) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(to right, black, transparent 72%); }
.hero::before { position: absolute; width: 460px; height: 460px; top: -280px; left: 46%; border: 1px solid rgba(94,185,213,.25); border-radius: 50%; content: ""; box-shadow: 0 0 0 85px rgba(94,185,213,.035), 0 0 0 170px rgba(94,185,213,.025); }
.hero-inner { position: relative; min-height: 620px; display: grid; grid-template-columns: .94fr 1.06fr; align-items: center; gap: 62px; padding-top: 62px; padding-bottom: 96px; }
.eyebrow { display: flex; align-items: center; gap: 11px; margin: 0 0 20px; color: #8fcde1; font: 700 12px/1.2 Arial, sans-serif; letter-spacing: .16em; }
.eyebrow span { width: 30px; height: 2px; background: currentColor; }
.eyebrow.dark { color: var(--blue); }
.hero h1 { margin: 0; max-width: 650px; font-size: clamp(42px, 4vw, 66px); line-height: 1.16; letter-spacing: -.045em; }
.hero h1 em { color: #68c6e2; font-style: normal; }
.hero-lead { max-width: 570px; margin: 26px 0 0; color: #c3d2df; font-size: 16px; line-height: 1.9; }
.hero-actions { display: flex; gap: 12px; margin-top: 34px; }
.button { min-height: 50px; padding: 0 24px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; font-size: 14px; font-weight: 700; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: white; background: var(--blue-bright); }
.button-primary:hover { background: #2385dd; }
.button-ghost { color: white; border: 1px solid rgba(255,255,255,.34); }
.hero-trust { display: flex; gap: 28px; margin-top: 35px; color: #aebfd0; font-size: 13px; }
.hero-trust span { display: inline-flex; align-items: center; gap: 8px; }
.hero-trust svg { color: #6bc5df; }
.hero-visual { position: relative; min-width: 0; }
.hero-image-frame { position: relative; height: 390px; overflow: hidden; background: white; box-shadow: 0 28px 80px rgba(0,0,0,.27); }
.hero-image-frame::after { position: absolute; inset: 0; content: ""; border: 1px solid rgba(255,255,255,.28); box-shadow: inset 0 0 0 10px rgba(5,24,42,.06); }
.hero-image-frame img { width: 100%; height: 100%; object-fit: cover; object-position: 24% center; }
.floating-card { position: absolute; left: -34px; bottom: -42px; width: 172px; padding: 23px 22px; display: grid; color: white; background: var(--blue-bright); box-shadow: 0 20px 45px rgba(3,30,55,.25); }
.floating-card strong { font: 800 44px/.95 Arial, sans-serif; }
.floating-card span { margin-top: 7px; font-size: 15px; font-weight: 700; }
.floating-card small { margin-top: 8px; color: #cbe8f4; font-size: 11px; }
.hero-chip { position: absolute; right: -18px; top: -26px; padding: 11px 17px; color: #a8cfe0; border: 1px solid rgba(143,205,225,.35); background: #09223d; font: 700 10px/1 Arial, sans-serif; letter-spacing: .14em; }
.metrics { position: relative; margin-top: -72px; display: grid; grid-template-columns: repeat(4, 1fr); color: var(--ink); background: white; box-shadow: 0 18px 55px rgba(8,33,57,.13); }
.metrics div { min-height: 136px; padding: 27px 30px; display: grid; align-content: center; border-right: 1px solid var(--line); }
.metrics div:last-child { border-right: 0; }
.metrics strong { color: var(--blue); font: 800 34px/1 Arial, sans-serif; }
.metrics strong sup { font-size: 16px; }
.metrics strong small { font: 700 15px/1 "Microsoft YaHei", sans-serif; }
.metrics span { margin-top: 10px; color: #66788b; font-size: 13px; }
.section { padding: 126px 0; }
.products { background: var(--paper); }
.section-heading h2, .capability h2, .quality-copy h2, .about h2, .contact h2 { margin: 0; font-size: clamp(34px, 3.5vw, 50px); line-height: 1.28; letter-spacing: -.035em; }
.split-heading { display: grid; grid-template-columns: 1fr .72fr; align-items: end; gap: 80px; margin-bottom: 56px; }
.split-heading > p { max-width: 500px; margin: 0 0 6px; color: var(--muted); font-size: 15px; line-height: 1.9; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.product-card { overflow: hidden; background: white; border: 1px solid #e3eaf0; transition: transform .25s ease, box-shadow .25s ease; }
.product-card:hover { transform: translateY(-6px); box-shadow: 0 20px 46px rgba(15,49,78,.11); }
.product-image { position: relative; height: 222px; overflow: hidden; background: #eef2f4; }
.product-image img { width: 100%; height: 100%; object-fit: contain; mix-blend-mode: multiply; transition: transform .4s ease; }
.product-card:hover .product-image img { transform: scale(1.04); }
.product-number { position: absolute; left: 0; bottom: 0; width: 52px; height: 46px; display: grid; place-items: center; color: white; background: var(--blue); font: 700 12px/1 Arial, sans-serif; }
.product-body { min-height: 270px; padding: 28px; }
.product-body > p:first-child { margin: 0 0 6px; color: var(--blue); font: 700 10px/1.2 Arial, sans-serif; text-transform: uppercase; letter-spacing: .14em; }
.product-body h3 { margin: 0; font-size: 22px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 16px; }
.tag-row span { padding: 6px 9px; color: #587085; background: #edf4f8; font-size: 11px; }
.product-description { min-height: 66px; margin: 18px 0 14px !important; color: var(--muted) !important; font: 400 13px/1.75 "Microsoft YaHei", sans-serif !important; text-transform: none !important; letter-spacing: 0 !important; }
.product-body a { display: inline-flex; align-items: center; gap: 8px; color: var(--blue); font-size: 13px; font-weight: 700; }
.product-body a svg { transition: transform .2s ease; }
.product-body a:hover svg { transform: translateX(4px); }
.capability { position: relative; overflow: hidden; padding: 112px 0; color: white; background: #0a223c; }
.capability::after { position: absolute; right: -100px; top: -140px; width: 500px; height: 500px; border: 1px solid rgba(100,184,214,.14); border-radius: 50%; content: ""; box-shadow: 0 0 0 80px rgba(100,184,214,.025), 0 0 0 160px rgba(100,184,214,.02); }
.capability-grid { position: relative; z-index: 1; display: grid; grid-template-columns: .88fr 1.12fr; gap: 92px; align-items: center; }
.capability-copy > p:not(.eyebrow) { max-width: 530px; margin: 24px 0 0; color: #b8c9d8; font-size: 15px; line-height: 1.9; }
.capability-list { display: grid; gap: 12px; margin-top: 34px; }
.capability-list > div { padding: 16px 0; display: flex; align-items: center; gap: 17px; border-bottom: 1px solid rgba(255,255,255,.12); }
.capability-list svg { color: #66c0dc; }
.capability-list span { display: grid; gap: 5px; }
.capability-list strong { font-size: 15px; }
.capability-list small { color: #91a8bc; font-size: 12px; }
.capability-art { position: relative; }
.capability-art > img { width: 100%; min-height: 390px; object-fit: cover; box-shadow: 0 28px 70px rgba(0,0,0,.25); }
.art-caption { position: absolute; left: -36px; bottom: -34px; min-width: 250px; padding: 22px 25px; display: flex; align-items: center; gap: 20px; background: white; color: var(--ink); box-shadow: 0 20px 45px rgba(0,0,0,.22); }
.art-caption > span { color: var(--blue); font: 800 34px/1 Arial, sans-serif; }
.art-caption p { margin: 0; color: #718093; font-size: 12px; line-height: 1.6; }
.art-caption strong { color: var(--ink); font-size: 16px; }
.process { background: white; }
.center-heading { max-width: 720px; margin: 0 auto 58px; text-align: center; }
.center-heading .eyebrow { justify-content: center; }
.center-heading > p:last-child { margin: 18px 0 0; color: var(--muted); font-size: 14px; }
.steps { display: grid; grid-template-columns: repeat(5, 1fr); margin-bottom: 80px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.step { position: relative; min-height: 190px; padding: 31px 25px; border-right: 1px solid var(--line); }
.step:last-child { border-right: 0; }
.step > span { color: #88aac5; font: 700 11px/1 Arial, sans-serif; letter-spacing: .08em; }
.step h3 { margin: 37px 0 9px; font-size: 18px; }
.step p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.7; }
.step:not(:last-child)::after { position: absolute; top: 50%; right: -5px; z-index: 1; width: 9px; height: 9px; content: ""; border-top: 1px solid #7893aa; border-right: 1px solid #7893aa; background: white; transform: rotate(45deg); }
.quality-panel { display: grid; grid-template-columns: 1.08fr .92fr; min-height: 430px; color: white; background: var(--blue); }
.quality-image { min-height: 430px; overflow: hidden; }
.quality-image img { width: 100%; height: 100%; object-fit: cover; }
.quality-copy { padding: 62px 58px; }
.quality-copy .eyebrow { color: #a7dff0; }
.quality-copy h2 { font-size: 38px; }
.quality-copy > p:not(.eyebrow) { margin: 19px 0 0; color: #d2e5f2; font-size: 14px; line-height: 1.85; }
.quality-copy ul { display: grid; gap: 13px; margin: 27px 0 0; padding: 0; list-style: none; }
.quality-copy li { display: flex; align-items: center; gap: 10px; font-size: 13px; }
.quality-copy li svg { color: #aee8f8; }
.about { padding: 104px 0; color: white; background: #061426; }
.about-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; }
.about-grid > div:last-child { padding-top: 28px; }
.about-grid > div:last-child p { max-width: 620px; margin: 0 0 18px; color: #b5c5d4; font-size: 15px; line-height: 2; }
.contact { padding: 94px 0; color: white; background: linear-gradient(105deg, #095393, #1374bd); }
.contact-inner { display: grid; grid-template-columns: 1fr 440px; gap: 70px; align-items: center; }
.contact .eyebrow { color: #bce7f5; }
.contact-card { padding: 32px 36px; display: grid; background: white; color: var(--ink); box-shadow: 0 22px 55px rgba(2,31,57,.2); }
.contact-card > p { margin: 0 0 13px; color: var(--blue); font-size: 12px; font-weight: 700; letter-spacing: .08em; }
.contact-card > a:not(.button) { margin: 2px 0; font: 700 19px/1.45 Arial, "Microsoft YaHei", sans-serif; }
.contact-card small { margin: 8px 0 18px; color: #8a97a4; font-size: 10px; }
.button-light { width: max-content; color: white; background: var(--ink); }
footer { color: #a9b9c8; background: #040e1a; }
.footer-top { min-height: 126px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(255,255,255,.1); }
.footer-brand strong { color: white; }
.footer-links { display: flex; gap: 30px; font-size: 12px; }
.footer-links a:hover { color: white; }
.footer-bottom { min-height: 68px; display: flex; align-items: center; justify-content: space-between; font-size: 10px; }

@media (max-width: 1020px) {
  .desktop-nav { gap: 18px; }
  .nav-contact { display: none; }
  .hero-inner { grid-template-columns: 1fr; padding-top: 80px; }
  .hero-copy { max-width: 720px; }
  .hero-visual { max-width: 760px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-copy { max-width: 720px; }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .step { border-bottom: 1px solid var(--line); }
  .quality-panel { grid-template-columns: 1fr; }
  .quality-image { max-height: 390px; }
}

@media (max-width: 760px) {
  .shell { width: min(100% - 32px, 1180px); }
  .utility-meta { display: none; }
  .site-header { height: 70px; }
  .desktop-nav { display: none; }
  .mobile-menu { display: block; }
  .brand-mark { width: 40px; height: 40px; }
  .hero-inner { min-height: auto; gap: 52px; padding: 68px 0 95px; }
  .hero h1 { font-size: 42px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-trust { flex-direction: column; gap: 12px; }
  .hero-image-frame { height: 290px; }
  .floating-card { left: 14px; bottom: -42px; }
  .hero-chip { right: 10px; }
  .metrics { margin-top: -24px; grid-template-columns: repeat(2, 1fr); }
  .metrics div { min-height: 110px; padding: 22px; border-bottom: 1px solid var(--line); }
  .section { padding: 88px 0; }
  .split-heading, .about-grid, .contact-inner { grid-template-columns: 1fr; gap: 30px; }
  .section-heading h2, .capability h2, .quality-copy h2, .about h2, .contact h2 { font-size: 34px; }
  .product-grid { grid-template-columns: 1fr; }
  .product-image { height: 245px; }
  .product-body { min-height: auto; }
  .product-description { min-height: auto; }
  .capability { padding: 84px 0 105px; }
  .capability-grid { gap: 58px; }
  .capability-art > img { min-height: 270px; }
  .art-caption { left: 14px; right: 14px; bottom: -40px; min-width: 0; }
  .steps { grid-template-columns: 1fr; }
  .step { min-height: auto; padding: 25px 20px; border-right: 0; }
  .step h3 { margin: 12px 0 7px; }
  .step::after { display: none; }
  .quality-panel { margin-inline: -16px; }
  .quality-image { min-height: 260px; }
  .quality-copy { padding: 42px 30px; }
  .about { padding: 82px 0; }
  .about-grid > div:last-child { padding-top: 0; }
  .contact { padding: 78px 0; }
  .contact-card { padding: 27px 24px; }
  .contact-card > a:not(.button) { font-size: 16px; }
  .footer-top { padding: 34px 0; align-items: flex-start; flex-direction: column; gap: 27px; }
  .footer-links { flex-wrap: wrap; gap: 16px 24px; }
  .footer-bottom { padding: 20px 0; align-items: flex-start; flex-direction: column; gap: 8px; }
}