:root {
  --ink: #12141b;
  --ink-soft: #1d2230;
  --violet: #5d43d6;
  --violet-deep: #332177;
  --cyan: #48d9d2;
  --cyan-soft: #b8f0ed;
  --paper: #f5f5f7;
  --white: #fff;
  --muted: #646a78;
  --line: rgba(18,20,27,.16);
  --container: 1240px;
  --shadow: 0 24px 58px rgba(18,20,27,.18);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; color: var(--ink); background: var(--paper); font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; line-height: 1.7; }
body.nav-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
.container { width: min(var(--container), calc(100% - 48px)); margin-inline: auto; }
.section { padding: 66px 0; }
.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; }
.skip-link { position: fixed; z-index: 1000; top: -80px; left: 15px; padding: 9px 14px; color: var(--white); background: var(--violet); }
.skip-link:focus { top: 12px; }
.kicker { margin: 0 0 8px; color: var(--violet); font-size: 11px; font-weight: 900; letter-spacing: .19em; }

.site-header { position: sticky; z-index: 100; top: 0; color: var(--white); background: rgba(18,20,27,.96); border-bottom: 1px solid rgba(255,255,255,.12); backdrop-filter: blur(12px); }
.nav-shell { display: flex; min-height: 76px; align-items: center; gap: 24px; }
.brand { flex: 0 0 175px; }
.brand img { width: 175px; height: 62px; padding: 4px; object-fit: contain; background: var(--white); }
.site-nav { display: flex; align-items: center; gap: 23px; margin-left: auto; }
.site-nav a { padding: 25px 0 23px; color: #d3d6df; font-size: 14px; font-weight: 800; }
.site-nav a:hover, .site-nav a:focus-visible { color: var(--cyan); }
.nav-phone { display: grid; padding: 8px 14px; color: var(--ink); background: var(--cyan); font-size: 15px; font-weight: 900; line-height: 1.2; }
.nav-phone span { font-size: 9px; letter-spacing: .13em; }
.nav-toggle { display: none; }

.hero { color: var(--white); background: radial-gradient(circle at 75% 40%, rgba(93,67,214,.32), transparent 35%), var(--ink); }
.hero-layout { display: grid; grid-template-columns: minmax(0,1.05fr) minmax(470px,.95fr); gap: 44px; min-height: 640px; align-items: center; padding-top: 40px; padding-bottom: 40px; }
.eyebrow { margin: 0 0 18px; color: var(--cyan); font-size: 11px; font-weight: 900; letter-spacing: .2em; }
.hero h1 { max-width: 790px; margin: 0; font-size: clamp(36px,3.5vw,54px); line-height: 1.12; letter-spacing: -.035em; text-wrap: balance; }
.hero-lead { max-width: 750px; margin: 0; color: #bcc1cf; font-size: 16px; }
.hero-phone { margin: 14px 0 0; color: #e8e9ee; font-weight: 800; }
.hero-phone a { color: var(--cyan); font-size: 20px; }
.hero-facts { display: flex; flex-wrap: wrap; gap: 0; margin-top: 18px; }
.hero-facts span { padding: 6px 10px; border: 1px solid rgba(255,255,255,.17); color: #ccd0da; font-size: 12px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 22px; }
.button { display: inline-flex; min-height: 47px; align-items: center; justify-content: center; padding: 10px 18px; border: 1px solid transparent; font-weight: 900; transition: background .2s ease, color .2s ease; }
.button-primary { color: var(--ink); background: var(--cyan); }
.button-primary:hover, .button-primary:focus-visible { background: #82e5e0; }
.button-ghost { color: var(--white); border-color: rgba(255,255,255,.45); }
.button-ghost:hover, .button-ghost:focus-visible { color: var(--ink); background: var(--white); }

.solution-hub { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 30px; background: var(--ink-soft); border: 1px solid rgba(255,255,255,.17); box-shadow: var(--shadow); }
.solution-hub::before, .solution-hub::after { position: absolute; z-index: 2; content: ""; background: rgba(72,217,210,.55); }
.solution-hub::before { top: 50%; right: 20px; left: 20px; height: 1px; }
.solution-hub::after { top: 20px; bottom: 20px; left: 50%; width: 1px; }
.solution-hub figure { position: relative; z-index: 1; margin: 0; overflow: hidden; background: var(--white); }
.solution-hub img { width: 100%; height: 205px; object-fit: cover; }
.hub-product img { object-fit: contain; }
.solution-hub figcaption { position: absolute; right: 7px; bottom: 7px; padding: 4px 7px; color: var(--white); background: rgba(18,20,27,.84); font-size: 10px; font-weight: 800; }
.hub-core { position: absolute; z-index: 4; top: 50%; left: 50%; display: grid; width: 180px; min-height: 112px; place-content: center; padding: 14px; text-align: center; background: var(--violet); border: 7px solid var(--ink-soft); transform: translate(-50%,-50%); }
.hub-core span { color: var(--cyan-soft); font-size: 8px; font-weight: 900; letter-spacing: .16em; }
.hub-core strong { font-size: 21px; line-height: 1.25; }
.hub-core small { margin-top: 3px; color: #ded9ff; font-size: 10px; }
.hub-label { position: absolute; z-index: 4; color: var(--cyan); font: 8px Consolas, monospace; letter-spacing: .12em; }
.label-a { top: 8px; left: 30px; }.label-b { top: 8px; right: 30px; }.label-c { bottom: 8px; left: 30px; }.label-d { right: 30px; bottom: 8px; }

.chain-section { padding: 55px 0 61px; background: var(--white); }
.chain-heading { display: grid; grid-template-columns: .75fr 1.2fr 1fr; gap: 25px; align-items: end; margin-bottom: 30px; }
.chain-heading h2 { margin: 0; font-size: clamp(28px,3.25vw,43px); line-height: 1.24; }
.chain-heading > p:last-child { margin: 0; color: var(--muted); }
.solution-chain { position: relative; display: grid; grid-template-columns: repeat(7,minmax(0,1fr)); margin: 0; padding: 0; list-style: none; }
.solution-chain::before { position: absolute; top: 28px; right: 6%; left: 6%; height: 2px; content: ""; background: linear-gradient(90deg,var(--violet),var(--cyan)); }
.solution-chain li { position: relative; z-index: 1; padding: 0 10px; text-align: center; }
.solution-chain li > span { display: grid; width: 56px; height: 56px; place-items: center; margin: 0 auto 13px; color: var(--white); background: var(--ink); border: 5px solid var(--white); border-radius: 50%; box-shadow: 0 0 0 2px var(--violet); font-family: Consolas, monospace; font-size: 11px; font-weight: 900; }
.solution-chain li:nth-child(even) > span { box-shadow: 0 0 0 2px var(--cyan); }
.solution-chain strong { display: block; font-size: 14px; }
.solution-chain p { margin: 5px 0 0; color: var(--muted); font-size: 11px; }

.solution-ai { color: var(--white); background: var(--violet); }
.ai-layout { display: grid; grid-template-columns: 190px minmax(0,1fr); }
.ai-marker { display: grid; align-content: center; padding-right: 29px; border-right: 1px solid rgba(255,255,255,.35); }
.ai-marker span { color: var(--cyan-soft); font-size: 10px; font-weight: 900; letter-spacing: .18em; }
.ai-marker strong { font-size: 62px; line-height: 1; }
.ai-marker b { margin-top: 4px; color: #dcd7ff; font-size: 11px; letter-spacing: .14em; }
.ai-copy { padding-left: 35px; }
.ai-copy .kicker { color: var(--cyan-soft); }
.ai-copy h2 { margin: 0 0 11px; font-size: clamp(28px,3.25vw,42px); line-height: 1.24; }
.ai-copy > p:not(.kicker) { max-width: 960px; margin: 0; }
.ai-copy a { display: inline-block; margin-top: 11px; padding-bottom: 2px; border-bottom: 1px solid rgba(255,255,255,.7); color: var(--cyan-soft); font-weight: 900; }

.system-section { padding: 66px 0; background: var(--paper); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 42px; margin-bottom: 29px; }
.section-heading h2 { max-width: 770px; margin: 0; font-size: clamp(29px,3.35vw,44px); line-height: 1.24; letter-spacing: -.025em; }
.section-heading > p { max-width: 430px; margin: 0; color: var(--muted); }
.system-layers { display: grid; gap: 9px; }
.system-layers article { display: grid; grid-template-columns: 190px minmax(0,1fr) 285px; align-items: center; min-height: 105px; overflow: hidden; background: var(--white); border-left: 6px solid var(--violet); box-shadow: 0 7px 24px rgba(18,20,27,.06); }
.system-layers article:nth-child(even) { border-left-color: var(--cyan); }
.layer-name { height: 100%; padding: 16px 20px; color: var(--white); background: var(--ink-soft); }
.layer-name span { color: var(--cyan); font: 10px Consolas, monospace; }
.layer-name h3 { margin: 6px 0 0; font-size: 18px; }
.layer-name b { color: #9ca2b3; font-size: 8px; letter-spacing: .14em; }
.layer-steps { display: flex; flex-wrap: wrap; gap: 6px; padding: 14px 20px; }
.layer-steps span { padding: 6px 9px; background: #efeff4; border: 1px solid #dedee7; font-size: 12px; font-weight: 700; }
.system-layers article > p { margin: 0; padding: 14px 20px; color: var(--muted); border-left: 1px solid var(--line); font-size: 12px; }

.gallery-section { color: var(--white); background: var(--ink); }
.gallery-heading .kicker { color: var(--cyan); }
.gallery-heading > p { color: #adb2bf; }
.solution-gallery { display: grid; grid-template-columns: repeat(12,minmax(0,1fr)); gap: 11px; }
.solution-card { grid-column: span 3; margin: 0; overflow: hidden; color: var(--ink); background: var(--white); }
.solution-card:nth-child(1) { grid-column: span 6; grid-row: span 2; }
.solution-card:nth-child(2), .solution-card:nth-child(3) { grid-column: span 3; }
.solution-card img { width: 100%; height: 210px; object-fit: contain; background: #f8f8fa; }
.solution-card:nth-child(1) img { height: 470px; }
.card-mold img, .card-equipment img, .card-inspection img { object-fit: cover; }
.solution-card figcaption { display: flex; min-height: 53px; align-items: center; gap: 11px; padding: 10px 12px; }
.solution-card figcaption span { color: var(--violet); font: 10px Consolas, monospace; }
.solution-card figcaption strong { font-size: 13px; }

.materials-section { padding: 64px 0; background: var(--cyan); }
.materials-layout { display: grid; grid-template-columns: minmax(260px,.65fr) minmax(0,1.35fr); gap: 48px; }
.materials-intro .kicker { color: var(--violet-deep); }
.materials-intro h2 { margin: 0 0 11px; font-size: clamp(28px,3.15vw,42px); line-height: 1.24; }
.materials-intro > p:last-child { color: #254945; }
.material-orbit { display: grid; gap: 9px; }
.material-orbit > div { padding: 16px 18px; background: rgba(255,255,255,.75); border-left: 5px solid var(--violet); }
.material-orbit span { display: block; color: var(--violet-deep); font: 9px Consolas, monospace; letter-spacing: .12em; }
.material-orbit strong { display: block; margin-top: 5px; font-size: 14px; line-height: 1.65; }

.equipment-section { background: var(--white); }
.equipment-system { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.equipment-cluster { padding: 18px; background: var(--paper); border-top: 5px solid var(--violet); }
.cluster-quality { border-top-color: var(--cyan); }
.cluster-title { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.cluster-title span { color: var(--violet); font: 11px Consolas, monospace; }
.cluster-title h3 { margin: 0; font-size: 20px; }
.cluster-images { display: grid; grid-template-columns: repeat(3,1fr); gap: 7px; }
.cluster-images figure { position: relative; margin: 0; overflow: hidden; background: var(--white); }
.cluster-images img { width: 100%; height: 170px; object-fit: cover; }
.cluster-quality .cluster-images figure:first-child img { object-fit: contain; }
.cluster-images figcaption { position: absolute; right: 5px; bottom: 5px; padding: 3px 6px; color: var(--white); background: rgba(18,20,27,.8); font-size: 9px; }
.equipment-cluster > p { margin: 13px 0 0; color: var(--muted); font-size: 12px; }

.advice-section { color: var(--white); background: var(--violet-deep); }
.advice-layout { display: grid; grid-template-columns: minmax(290px,.72fr) minmax(0,1.28fr); gap: 55px; }
.advice-head > span { display: inline-block; margin-bottom: 22px; padding: 5px 8px; color: var(--ink); background: var(--cyan); font-size: 9px; font-weight: 900; letter-spacing: .14em; }
.advice-head .kicker { color: var(--cyan-soft); }
.advice-head h2 { margin: 0; font-size: clamp(29px,3.3vw,43px); line-height: 1.24; }
.advice-copy > p { margin: 3px 0 22px; color: #dedbf2; }
.advice-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 7px; }
.advice-grid span { padding: 7px 9px; border: 1px solid rgba(255,255,255,.25); color: var(--cyan-soft); font-size: 12px; text-align: center; }

.quality-section { padding: 66px 0; background: #e7e8ee; }
.quality-layout { display: grid; grid-template-columns: minmax(0,.92fr) minmax(450px,1.08fr); gap: 44px; }
.quality-panel h2 { margin: 0 0 21px; font-size: clamp(29px,3.2vw,43px); line-height: 1.24; }
.quality-metrics { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.quality-metrics > div { padding: 15px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.quality-metrics span { display: block; color: var(--muted); font-size: 11px; }
.quality-metrics strong { font-size: 23px; }
.quality-note { margin: 17px 0 0; padding-left: 12px; border-left: 4px solid var(--violet); color: #535969; font-size: 13px; }
.quality-proof { display: grid; gap: 9px; }
.quality-proof figure { margin: 0; background: var(--white); }
.delivery-photo { position: relative; }
.delivery-photo img { width: 100%; height: 250px; object-fit: cover; }
.delivery-photo figcaption { position: absolute; right: 7px; bottom: 7px; padding: 4px 7px; color: var(--white); background: rgba(18,20,27,.84); font-size: 10px; }
.certificates { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; }
.certificates figure { padding: 8px; }
.certificates img { width: 100%; height: 152px; object-fit: contain; }
.certificates figcaption { padding-top: 5px; border-top: 1px solid var(--line); font-size: 11px; font-weight: 800; text-align: center; }

.faq-section { background: var(--white); }
.faq-layout { display: grid; grid-template-columns: minmax(250px,.58fr) minmax(0,1.42fr); gap: 55px; }
.faq-heading { position: sticky; top: 106px; align-self: start; }
.faq-heading h2 { margin: 0 0 12px; font-size: clamp(29px,3.2vw,42px); line-height: 1.24; }
.faq-heading > p:not(.kicker) { color: var(--muted); }
.faq-heading a { display: inline-block; margin-top: 8px; padding-bottom: 3px; border-bottom: 2px solid var(--violet); font-weight: 900; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; padding: 17px 47px 17px 3px; cursor: pointer; font-size: 16px; font-weight: 900; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { position: absolute; top: 13px; right: 5px; content: "+"; color: var(--violet); font-size: 25px; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { margin: -3px 0 17px; padding: 0 45px 0 3px; color: var(--muted); }

.contact-section { padding: 64px 0; color: var(--white); background: var(--ink); }
.contact-layout { display: grid; grid-template-columns: minmax(0,1.25fr) minmax(320px,.75fr); gap: 58px; align-items: center; }
.contact-layout .kicker { color: var(--cyan); }
.contact-layout h2 { max-width: 820px; margin: 0 0 12px; font-size: clamp(31px,3.8vw,50px); line-height: 1.18; }
.contact-layout > div > p:last-child { color: #b7bbc7; }
.contact-card { display: grid; padding: 24px; background: var(--violet); border-top: 6px solid var(--cyan); }
.contact-card > span { color: var(--cyan-soft); font-size: 10px; font-weight: 900; letter-spacing: .12em; }
.contact-card > strong { margin-top: 7px; font-size: 20px; }
.contact-card > a:not(.button) { color: var(--cyan); font-size: 29px; font-weight: 900; line-height: 1.35; }
.contact-card p { margin: 8px 0 16px; color: #ded9fb; font-size: 12px; }

.site-footer { padding: 41px 0 22px; color: #bec1cb; background: #090a0e; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 1.4fr .9fr .9fr; gap: 33px; }
.footer-grid img { width: 168px; height: 60px; padding: 5px; object-fit: contain; background: var(--white); }
.footer-grid strong { color: var(--white); font-size: 13px; }
.footer-grid p { margin: 7px 0 0; font-size: 12px; }
.footer-grid a { color: var(--cyan); }
.footer-bottom { display: flex; justify-content: space-between; margin-top: 27px; padding-top: 14px; border-top: 1px solid rgba(255,255,255,.14); font-size: 11px; }
.mobile-cta { display: none; }

@media (max-width: 1120px) {
  .site-nav { gap: 15px; }
  .nav-phone span { display: none; }
  .hero-layout { grid-template-columns: minmax(0,1fr) minmax(420px,.82fr); gap: 34px; }
  .solution-hub { padding: 24px; }
  .solution-hub img { height: 190px; }
  .solution-chain { grid-template-columns: repeat(4,1fr); gap: 24px 0; }
  .solution-chain::before { display: none; }
}

@media (max-width: 900px) {
  .container { width: min(100% - 36px,var(--container)); }
  .nav-shell { min-height: 68px; }
  .brand { flex-basis: 150px; }
  .brand img { width: 150px; height: 54px; }
  .nav-phone { margin-left: auto; }
  .nav-toggle { display: grid; width: 42px; height: 42px; place-content: center; gap: 5px; padding: 0; border: 1px solid rgba(255,255,255,.25); background: transparent; }
  .nav-toggle span:not(.sr-only) { display: block; width: 20px; height: 2px; background: var(--white); }
  .site-nav { position: fixed; top: 68px; right: 0; bottom: 0; left: 0; display: none; align-content: start; padding: 24px; background: var(--ink); }
  .site-nav.is-open { display: grid; }
  .site-nav a { padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.15); font-size: 17px; }
  .hero-layout { grid-template-columns: 1fr; min-height: 0; }
  .solution-hub { max-width: 700px; }
  .chain-heading { grid-template-columns: 1fr; gap: 8px; }
  .system-layers article { grid-template-columns: 170px 1fr; }
  .system-layers article > p { grid-column: 1 / -1; border-top: 1px solid var(--line); border-left: 0; }
  .solution-card, .solution-card:nth-child(1), .solution-card:nth-child(2), .solution-card:nth-child(3) { grid-column: span 6; grid-row: auto; }
  .solution-card img, .solution-card:nth-child(1) img { height: 270px; }
  .materials-layout { grid-template-columns: 1fr; gap: 24px; }
  .quality-layout { grid-template-columns: 1fr; }
  .quality-proof { max-width: 720px; }
  .faq-layout { grid-template-columns: 1fr; gap: 25px; }
  .faq-heading { position: static; }
  .contact-layout { grid-template-columns: 1fr; gap: 28px; }
  .contact-card { max-width: 520px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  .section { padding: 48px 0; }
  .container { width: min(100% - 28px,var(--container)); }
  .nav-phone { display: none; }
  .hero-layout { gap: 32px; padding-top: 35px; padding-bottom: 35px; }
  .hero h1 { font-size: clamp(32px,9.4vw,43px); }
  .hero-actions { display: grid; }
  .solution-hub { padding: 17px; gap: 5px; }
  .solution-hub img { height: 150px; }
  .hub-core { width: 140px; min-height: 92px; border-width: 5px; }
  .hub-core strong { font-size: 17px; }
  .hub-label { display: none; }
  .solution-chain { grid-template-columns: 1fr; gap: 0; }
  .solution-chain li { display: grid; grid-template-columns: 58px 1fr; gap: 0 12px; padding: 10px 0; text-align: left; border-bottom: 1px solid var(--line); }
  .solution-chain li > span { grid-row: 1 / 3; margin: 0; }
  .solution-chain p { margin-top: 2px; }
  .ai-layout { grid-template-columns: 1fr; }
  .ai-marker { display: flex; align-items: baseline; gap: 12px; padding: 0 0 14px; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.35); }
  .ai-marker strong { font-size: 38px; }
  .ai-copy { padding: 18px 0 0; }
  .section-heading { display: grid; gap: 11px; }
  .system-layers article { grid-template-columns: 1fr; }
  .layer-name { height: auto; }
  .system-layers article > p { grid-column: auto; }
  .solution-card, .solution-card:nth-child(1), .solution-card:nth-child(2), .solution-card:nth-child(3) { grid-column: 1 / -1; }
  .solution-card img, .solution-card:nth-child(1) img { height: 260px; }
  .equipment-system { grid-template-columns: 1fr; }
  .cluster-images img { height: 145px; }
  .advice-layout { grid-template-columns: 1fr; gap: 28px; }
  .advice-head > span { margin-bottom: 10px; }
  .quality-metrics { grid-template-columns: 1fr; }
  .certificates { grid-template-columns: repeat(3,1fr); }
  .certificates img { height: 140px; }
  .contact-card > a:not(.button) { font-size: 25px; }
  .footer-grid { grid-template-columns: 1fr; gap: 23px; }
  .footer-bottom { flex-direction: column; gap: 10px; }
  .site-footer { padding-bottom: 78px; }
  .mobile-cta { position: fixed; z-index: 99; right: 0; bottom: 0; left: 0; display: grid; grid-template-columns: 1fr 1fr; min-height: 54px; box-shadow: 0 -8px 24px rgba(0,0,0,.14); }
  .mobile-cta a { display: grid; place-items: center; color: var(--white); background: var(--violet); font-weight: 900; }
  .mobile-cta a:last-child { color: var(--ink); background: var(--cyan); }
}

@media (max-width: 440px) {
  .solution-hub { grid-template-columns: 1fr 1fr; }
  .solution-hub img { height: 128px; }
  .hub-core { width: 125px; min-height: 82px; }
  .hub-core small { display: none; }
  .cluster-images { grid-template-columns: 1fr; }
  .cluster-images img { height: 220px; }
  .advice-grid { grid-template-columns: 1fr 1fr; }
  .certificates { grid-template-columns: 1fr; }
  .certificates img { height: 240px; }
}

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