:root {
  --ink: #13233c;
  --muted: #66758a;
  --blue: #1c71e8;
  --blue-deep: #0c2b52;
  --cyan: #20b6d5;
  --orange: #ff6a1a;
  --gold: #f5bd43;
  --line: #dbe5ef;
  --paper: #f5f9fc;
  --white: #fff;
  --max: 1200px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; font-synthesis: none; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; }
.container { width: min(var(--max), calc(100% - 56px)); margin: 0 auto; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: 2px; }
.eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--orange); }
h1, h2, h3, p { margin: 0; }
h1 { font-size: clamp(46px, 6vw, 78px); line-height: 1.07; letter-spacing: -3px; }
h2 { font-size: clamp(31px, 4vw, 52px); line-height: 1.15; letter-spacing: -1.5px; }
h3 { line-height: 1.3; }
.lead { color: var(--muted); font-size: 17px; line-height: 1.8; }
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.94); border-bottom: 1px solid var(--line); backdrop-filter: blur(16px); }
.nav { height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand img { width: 40px; height: 40px; object-fit: contain; }
.brand strong { display: block; font-size: 20px; letter-spacing: 1px; }
.brand small { display: block; margin-top: 2px; color: var(--muted); font-size: 9px; letter-spacing: 1.4px; }
.nav-links { display: flex; align-items: center; gap: 23px; color: #344963; font-size: 14px; }
.nav-links a:hover { color: var(--blue); }
.nav-cta { padding: 11px 17px; color: #fff; background: var(--blue); border-radius: 4px; font-weight: 800; }
.hero { overflow: hidden; background: #fff; border-bottom: 1px solid var(--line); }
.hero-grid { min-height: 650px; display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 34px; }
.hero-copy { padding: 72px 0; }
.hero h1 { margin-top: 22px; }
.hero h1 em { color: var(--blue); font-style: normal; }
.hero .lead { max-width: 610px; margin-top: 25px; font-size: 19px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.btn { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; padding: 0 19px; border: 1px solid transparent; border-radius: 4px; font-size: 14px; font-weight: 800; cursor: pointer; }
.btn-primary { color: #fff; background: var(--blue); }
.btn-secondary { color: var(--blue); border-color: #aacdf6; background: #f2f8ff; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 25px; }
.hero-tags span { padding: 7px 10px; color: #45617d; border: 1px solid var(--line); background: #f7fbff; font-size: 12px; }
.hero-visual { position: relative; min-height: 520px; display: flex; align-items: center; justify-content: center; }
.hero-panel { width: min(530px, 100%); padding: 16px; border: 1px solid #cbddec; background: #eef6fc; box-shadow: 0 24px 55px rgba(23,75,124,.13); transform: rotate(2deg); }
.hero-panel img { width: 100%; aspect-ratio: 1.12; object-fit: contain; background: #dceef7; }
.hero-panel-label { display: flex; justify-content: space-between; gap: 16px; padding: 13px 4px 1px; color: #315273; font-size: 12px; }
.product-shot { width: 100%; max-height: 560px; object-fit: contain; border: 1px solid var(--line); background: #eff6fb; box-shadow: 0 16px 38px rgba(23,75,124,.12); }
.hero-panel-label strong { color: var(--blue); }
.section { padding: 104px 0; }
.section-white { background: #fff; }
.section-dark { color: #fff; background: var(--blue-deep); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 34px; }
.section-head .lead { max-width: 450px; text-align: right; font-size: 14px; }
.section-dark .lead { color: #b9cedf; }
.intro { max-width: 720px; margin-top: 17px; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 46px; }
.product-card { position: relative; min-height: 350px; display: flex; flex-direction: column; padding: 24px; overflow: hidden; border: 1px solid var(--line); background: #fff; }
.product-card::after { content: attr(data-no); position: absolute; right: 19px; top: 10px; color: #ecf3fb; font-size: 90px; font-weight: 900; line-height: 1; }
.product-card > * { position: relative; z-index: 1; }
.product-number { color: var(--orange); font-size: 11px; font-weight: 900; letter-spacing: 1.4px; }
.product-card h3 { margin-top: 21px; font-size: 24px; }
.product-card p { margin-top: 12px; color: var(--muted); font-size: 14px; line-height: 1.75; }
.product-card ul { display: flex; flex-wrap: wrap; gap: 7px; margin: auto 0 0; padding: 25px 0 0; list-style: none; }
.product-card li { padding: 6px 8px; color: #4e6782; border: 1px solid var(--line); background: #f8fbfe; font-size: 11px; }
.product-link { margin-top: 18px; color: var(--blue); font-size: 13px; font-weight: 800; }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 44px; }
.feature { padding: 22px 19px; border: 1px solid var(--line); border-top: 3px solid var(--cyan); background: #fff; }
.feature:nth-child(2) { border-top-color: var(--blue); }
.feature:nth-child(3) { border-top-color: var(--orange); }
.feature:nth-child(4) { border-top-color: var(--gold); }
.feature b { color: var(--blue); font-size: 11px; letter-spacing: 1px; }
.feature h3 { margin-top: 14px; font-size: 18px; }
.feature p { margin-top: 8px; color: var(--muted); font-size: 13px; line-height: 1.7; }
.solution-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 43px; }
.solution-card { padding: 26px; border: 1px solid rgba(255,255,255,.15); background: rgba(255,255,255,.06); }
.solution-card h3 { font-size: 21px; }
.solution-card p { margin-top: 11px; color: #b9cedf; font-size: 14px; line-height: 1.75; }
.opc-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 52px; align-items: start; margin-top: 46px; }
.opc-steps { display: grid; gap: 0; }
.opc-step { display: grid; grid-template-columns: 43px 1fr; gap: 15px; padding: 18px 0; border-top: 1px solid var(--line); }
.opc-step b { color: var(--orange); font-size: 20px; }
.opc-step h3 { font-size: 18px; }
.opc-step p { margin-top: 5px; color: var(--muted); font-size: 13px; line-height: 1.65; }
.partner-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 42px; }
.partner-card { min-height: 170px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px; padding: 20px; border: 1px solid var(--line); background: #fff; text-align: center; }
.partner-card img { width: 150px; height: 70px; object-fit: contain; }
.partner-card p { color: #405873; font-size: 13px; line-height: 1.5; }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; margin-top: 42px; }
.news-card { min-height: 180px; padding: 23px; border: 1px solid var(--line); background: #fff; }
.news-card time { color: var(--orange); font-size: 11px; font-weight: 800; }
.news-card h3 { margin-top: 14px; font-size: 18px; }
.news-card p { margin-top: 9px; color: var(--muted); font-size: 13px; line-height: 1.65; }
.contact { background: #fff; }
.contact-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 66px; align-items: center; }
.contact-copy .lead { max-width: 580px; margin-top: 17px; }
.contact-details { display: grid; gap: 9px; margin-top: 25px; color: var(--muted); font-size: 14px; line-height: 1.6; }
.contact-details strong { display: inline-block; width: 58px; color: var(--ink); }
.qr-card { display: flex; align-items: center; gap: 22px; padding: 23px; border: 1px solid var(--line); background: var(--paper); }
.qr-card img { width: 174px; height: 174px; object-fit: contain; image-rendering: pixelated; }
.qr-card strong { display: block; font-size: 17px; }
.qr-card p { margin-top: 8px; color: var(--muted); font-size: 12px; line-height: 1.7; }
footer { padding: 24px 0; color: #a9bfd0; background: var(--blue-deep); font-size: 12px; }
footer .container { display: flex; justify-content: space-between; gap: 20px; }
.modal-backdrop { position: fixed; inset: 0; z-index: 50; display: none; place-items: center; padding: 20px; background: rgba(6,28,53,.58); }
.modal-backdrop.is-open { display: grid; }
.modal { width: min(520px, 100%); position: relative; padding: 27px; background: #fff; box-shadow: 0 20px 70px rgba(3,25,50,.32); }
.modal h2 { font-size: 29px; }
.modal p { margin-top: 9px; color: var(--muted); font-size: 14px; line-height: 1.7; }
.modal-content { display: flex; align-items: center; gap: 22px; margin-top: 20px; }
.modal-content img { width: 170px; height: 170px; object-fit: contain; image-rendering: pixelated; }
.modal-close { position: absolute; top: 13px; right: 13px; width: 34px; height: 34px; border: 1px solid var(--line); color: var(--muted); background: #fff; cursor: pointer; }
.modal-info strong { display: block; font-size: 17px; }
.modal-info a { display: block; margin-top: 10px; color: var(--blue); font-size: 14px; font-weight: 800; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@media (max-width: 920px) {
  .nav-links a:not(.nav-cta) { display: none; }
  .hero-grid, .opc-layout, .contact-grid { grid-template-columns: 1fr; }
  .hero-visual { min-height: 380px; }
  .section-head { display: block; }
  .section-head .lead { margin-top: 14px; text-align: left; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .product-grid, .partner-grid, .news-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .container { width: calc(100% - 30px); }
  .nav { height: 68px; }
  .brand strong { font-size: 17px; }
  .nav-cta { padding: 9px 11px; font-size: 12px; }
  .hero-grid { min-height: auto; }
  .hero-copy { padding: 68px 0 24px; }
  h1 { font-size: 47px; letter-spacing: -1px; }
  .hero .lead { font-size: 16px; }
  .hero-visual { min-height: 300px; }
  .hero-panel { transform: rotate(0); }
  .section { padding: 72px 0; }
  h2 { font-size: 34px; letter-spacing: 0; }
  .product-grid, .feature-grid, .solution-grid, .partner-grid, .news-grid { grid-template-columns: 1fr; }
  .qr-card, .modal-content { align-items: flex-start; flex-direction: column; }
  footer .container { display: block; }
  footer span { display: block; margin-top: 7px; }
}