:root {
  --teal: #079fb2;
  --teal-dark: #087c8d;
  --lime: #e7ee63;
  --orange: #f0603e;
  --ink: #15272d;
  --muted: #5e7075;
  --paper: #f3f5f3;
  --white: #fff;
  --line: rgba(21, 39, 45, .14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Arial", "Microsoft YaHei", sans-serif; overflow-x: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.site-header { position: absolute; z-index: 20; top: 0; left: 50%; transform: translateX(-50%); width: min(1240px, calc(100% - 64px)); height: 92px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(255,255,255,.35); color: white; }
.brand { display: flex; align-items: center; gap: 12px; letter-spacing: .05em; font-size: 14px; }
.brand img { width: 43px; height: 43px; object-fit: cover; border-radius: 50%; }
.brand strong { font-weight: 800; }
nav { display: flex; align-items: center; gap: 30px; font-size: 12px; font-weight: 700; }
nav a { padding: 10px 0; transition: opacity .2s ease; }
nav a:hover { opacity: .66; }
.nav-contact { padding: 12px 18px; border: 1px solid rgba(255,255,255,.48); border-radius: 999px; }
.menu-button { display: none; color: white; background: none; border: 0; font: inherit; font-size: 12px; font-weight: 700; }

.hero { position: relative; min-height: 760px; padding: 154px max(32px, calc((100vw - 1240px) / 2)) 0; color: white; background: var(--teal); overflow: hidden; }
.hero-grid { position: absolute; inset: 0; opacity: .12; background-image: linear-gradient(rgba(255,255,255,.35) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.35) 1px, transparent 1px); background-size: 80px 80px; mask-image: linear-gradient(to bottom, black, transparent 90%); }
.hero::after { content: "B"; position: absolute; right: -2.5vw; top: 15px; color: var(--lime); font-size: min(54vw, 700px); line-height: 1; font-weight: 900; opacity: .19; letter-spacing: -.15em; }
.hero-copy { position: relative; z-index: 4; width: 54%; padding-top: 48px; }
.kicker, .eyebrow { margin: 0; font-size: 10px; line-height: 1.4; letter-spacing: .22em; font-weight: 800; }
.kicker { display: flex; align-items: center; gap: 10px; color: rgba(255,255,255,.72); }
.kicker span { width: 28px; height: 2px; background: var(--lime); }
.hero h1 { margin: 28px 0 5px; max-width: 760px; font-size: clamp(62px, 8.2vw, 122px); line-height: .88; letter-spacing: -.075em; font-weight: 800; }
.hero h1 em { color: var(--lime); font-style: normal; }
.hero-cn { margin: 24px 0 18px; font-size: 21px; font-weight: 700; letter-spacing: .18em; }
.hero-intro { width: min(520px, 100%); margin: 0; color: rgba(255,255,255,.75); font-size: 14px; line-height: 1.9; }
.hero-actions { display: flex; gap: 12px; margin-top: 32px; }
.button { min-width: 126px; padding: 14px 20px; display: inline-flex; align-items: center; justify-content: center; gap: 18px; border-radius: 999px; font-size: 12px; font-weight: 800; transition: transform .2s ease; }
.button:hover { transform: translateY(-3px); }
.button-dark { background: var(--ink); }
.button-light { color: var(--ink); background: white; }
.hero-media { position: absolute; z-index: 3; top: 145px; right: max(32px, calc((100vw - 1240px) / 2)); width: 39%; height: 535px; }
.hero-image-wrap { height: 100%; overflow: hidden; border-radius: 220px 220px 18px 18px; border: 1px solid rgba(255,255,255,.5); box-shadow: 0 30px 80px rgba(1,44,52,.25); background: white; }
.hero-image-wrap img { width: 100%; height: 100%; object-fit: cover; object-position: 54% center; }
.hero-badge { position: absolute; right: -26px; bottom: 28px; width: 114px; height: 114px; border-radius: 50%; display: grid; place-items: center; color: var(--ink); background: var(--lime); transform: rotate(8deg); box-shadow: 0 18px 40px rgba(1,44,52,.18); }
.hero-badge b { font-size: 50px; line-height: .7; letter-spacing: -.1em; }
.hero-badge span { position: absolute; bottom: 15px; right: 18px; font-size: 7px; font-weight: 800; letter-spacing: .14em; }
.vertical-word { position: absolute; right: -50px; top: 165px; transform: rotate(90deg); transform-origin: center; color: rgba(255,255,255,.6); font-size: 8px; letter-spacing: .22em; }
.hero-footer { position: absolute; z-index: 5; left: max(32px, calc((100vw - 1240px) / 2)); right: max(32px, calc((100vw - 1240px) / 2)); bottom: 23px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 24px; color: rgba(255,255,255,.62); font-size: 9px; letter-spacing: .18em; }
.hero-footer p { margin: 0; }
.hero-footer a { width: 38px; height: 38px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.35); border-radius: 50%; font-size: 14px; }

.section { width: min(1240px, calc(100% - 64px)); margin: 0 auto; padding: 120px 0; }
.eyebrow { color: var(--teal-dark); }
.eyebrow.light { color: var(--lime); }
.section-title { display: grid; grid-template-columns: .55fr 1.45fr; align-items: start; }
.section-title h2, .vision h2, .section-heading-row h2, .performance h2, .partners h2, .contact h2 { margin: 0; font-size: clamp(42px, 5.7vw, 76px); line-height: 1.08; letter-spacing: -.06em; font-weight: 750; }
.about-copy { width: 57%; margin: 64px 0 72px auto; display: grid; grid-template-columns: 1fr 1fr; gap: 24px 48px; color: var(--muted); font-size: 13px; line-height: 1.9; }
.about-copy .lead { grid-column: 1 / -1; margin: 0; color: var(--ink); font-size: 20px; line-height: 1.65; font-weight: 650; }
.about-copy p { margin: 0; }
.about-gallery { display: grid; grid-template-columns: 1.15fr .85fr .9fr; gap: 14px; height: 430px; }
.about-gallery figure { margin: 0; overflow: hidden; border-radius: 3px; }
.about-gallery img { width: 100%; height: 100%; object-fit: cover; }
.gallery-tall img { object-position: center 30%; }

.principle { width: 100%; padding-left: max(32px, calc((100vw - 1240px) / 2)); padding-right: max(32px, calc((100vw - 1240px) / 2)); color: white; background: var(--ink); }
.principle-top { display: flex; justify-content: space-between; align-items: baseline; padding-bottom: 45px; border-bottom: 1px solid rgba(255,255,255,.14); }
.principle-mark { margin: 0; font-size: clamp(28px, 4vw, 56px); letter-spacing: -.05em; }
.principle-mark span { color: var(--orange); margin: 0 8px; }
.principle-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: rgba(255,255,255,.14); }
.principle-grid article { position: relative; min-height: 360px; padding: 65px 62px; background: var(--ink); }
.principle-grid article:first-child { padding-left: 0; }
.big-number { color: var(--lime); font-size: 11px; letter-spacing: .18em; }
.principle-grid h3 { margin: 80px 0 16px; font-size: 36px; letter-spacing: -.04em; }
.principle-grid article p { max-width: 450px; margin: 0; color: #aebbbd; font-size: 13px; line-height: 1.9; }
.principle-result { grid-column: 1 / -1; padding: 34px 0; display: flex; justify-content: center; align-items: center; gap: 28px; color: var(--lime); background: var(--ink); font-size: clamp(25px, 4vw, 55px); font-weight: 800; letter-spacing: -.04em; }
.principle-result i { color: var(--orange); font-style: normal; }

.vision { position: relative; min-height: 740px; display: grid; grid-template-columns: .85fr 1.15fr; align-items: center; gap: 60px; }
.vision-copy { position: relative; z-index: 3; }
.vision-copy h2 { margin: 30px 0 35px; font-size: clamp(42px, 5vw, 68px); }
.vision-copy > p:not(.eyebrow) { max-width: 490px; margin: 0 0 18px; color: var(--muted); font-size: 13px; line-height: 1.9; }
.vision-visual { position: relative; height: 610px; }
.vision-circle { position: absolute; width: 450px; height: 450px; right: 7%; top: 50%; transform: translateY(-50%); border-radius: 50%; background: var(--lime); }
.vision-visual img { position: absolute; object-fit: contain; }
.vision-visual .stretch { width: 70%; left: -4%; bottom: 0; }
.vision-visual .run { width: 32%; right: 2%; bottom: 0; }
.vision-visual p { position: absolute; right: -18px; top: 55px; margin: 0; writing-mode: vertical-rl; font-size: 8px; letter-spacing: .22em; color: var(--teal-dark); }

.applications { padding-top: 70px; }
.section-heading-row { display: grid; grid-template-columns: 1.3fr .7fr; gap: 70px; align-items: end; margin-bottom: 58px; }
.section-heading-row h2 { margin-top: 22px; }
.section-heading-row > p { margin: 0 0 7px; color: var(--muted); font-size: 13px; line-height: 1.9; }
.scene-grid { display: grid; grid-template-columns: repeat(4, 1fr); height: 560px; }
.scene-grid article { position: relative; overflow: hidden; color: white; background: #234; }
.scene-grid article::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to bottom, rgba(4,20,25,.04), rgba(4,20,25,.83)); }
.scene-grid img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.scene-grid article:hover img { transform: scale(1.04); }
.scene-grid span, .scene-grid h3, .scene-grid b { position: absolute; z-index: 2; left: 25px; }
.scene-grid span { top: 25px; color: var(--lime); font-size: 9px; letter-spacing: .16em; }
.scene-grid h3 { bottom: 44px; margin: 0; font-size: clamp(22px, 2.4vw, 35px); letter-spacing: -.04em; }
.scene-grid b { bottom: 25px; color: rgba(255,255,255,.68); font-size: 10px; letter-spacing: .12em; }

.performance { width: 100%; padding-left: max(32px, calc((100vw - 1240px) / 2)); padding-right: max(32px, calc((100vw - 1240px) / 2)); color: white; background: var(--teal); }
.performance-head { display: grid; grid-template-columns: 1.35fr .65fr; gap: 70px; align-items: end; }
.performance-head h2 { margin-top: 22px; }
.performance-head > p { margin: 0 0 8px; color: rgba(255,255,255,.72); font-size: 13px; line-height: 1.9; }
.performance-image { width: 100%; margin: 58px 0 35px; border-radius: 4px; background: white; }
.feature-list { display: flex; flex-wrap: wrap; gap: 9px; }
.feature-list span { padding: 10px 15px; border: 1px solid rgba(255,255,255,.42); border-radius: 999px; font-size: 10px; letter-spacing: .07em; }

.partners { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; align-items: center; }
.partners h2 { margin: 24px 0 30px; }
.partners-copy > p:last-child { max-width: 500px; color: var(--muted); font-size: 13px; line-height: 1.9; }
.partner-board { display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.partner-board span { min-height: 100px; padding: 15px; display: grid; place-items: center; text-align: center; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); font-size: 15px; font-weight: 800; letter-spacing: -.02em; }

.contact { width: 100%; margin-bottom: 0; padding-left: max(32px, calc((100vw - 1240px) / 2)); padding-right: max(32px, calc((100vw - 1240px) / 2)); color: white; background: var(--teal); }
.contact-title { display: grid; grid-template-columns: .55fr 1.45fr; }
.contact-details { width: 58%; margin: 80px 0 65px auto; display: grid; grid-template-columns: 1.2fr 1fr 1fr; border-top: 1px solid rgba(255,255,255,.35); }
.contact-details div { padding: 24px 20px 10px 0; border-right: 1px solid rgba(255,255,255,.2); }
.contact-details div + div { padding-left: 22px; }
.contact-details span { color: var(--lime); font-size: 9px; letter-spacing: .16em; }
.contact-details p { margin: 14px 0 0; font-size: 12px; line-height: 1.8; }
.contact-signature { padding-top: 25px; border-top: 1px solid rgba(255,255,255,.28); color: rgba(255,255,255,.28); font-size: clamp(45px, 8.6vw, 128px); line-height: .9; letter-spacing: -.07em; font-weight: 800; white-space: nowrap; }
.contact-signature em { color: var(--lime); font-style: normal; opacity: .7; }

footer { min-height: 110px; padding: 0 max(32px, calc((100vw - 1240px) / 2)); display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 25px; color: white; background: var(--ink); font-size: 9px; letter-spacing: .09em; }
.footer-brand img { width: 36px; height: 36px; }
footer > a:last-child { justify-self: end; }

@media (max-width: 980px) {
  .site-header { width: calc(100% - 40px); height: 76px; }
  nav { display: none; position: absolute; top: 70px; left: 0; right: 0; padding: 22px; flex-direction: column; align-items: stretch; gap: 9px; color: var(--ink); background: white; border-radius: 12px; box-shadow: 0 22px 45px rgba(0,0,0,.14); }
  nav.open { display: flex; }
  .menu-button { display: block; }
  .hero { min-height: 1040px; padding-top: 125px; }
  .hero-copy { width: 100%; padding-top: 20px; }
  .hero-media { top: 560px; left: 50%; right: auto; transform: translateX(-50%); width: min(470px, calc(100% - 54px)); height: 390px; }
  .hero-image-wrap { border-radius: 190px 190px 15px 15px; }
  .hero-footer { bottom: 18px; }
  .section { width: min(100% - 40px, 1240px); padding: 85px 0; }
  .section-title, .contact-title { grid-template-columns: 1fr; gap: 24px; }
  .about-copy { width: 100%; }
  .about-gallery { height: 350px; }
  .vision { grid-template-columns: 1fr; }
  .vision-visual { height: 520px; }
  .scene-grid { grid-template-columns: 1fr 1fr; height: 820px; }
  .partners { grid-template-columns: 1fr; gap: 55px; }
  .contact-details { width: 100%; }
  .contact-signature { white-space: normal; }
}

@media (max-width: 640px) {
  .brand span { display: none; }
  .hero { min-height: 900px; padding-left: 20px; padding-right: 20px; }
  .hero h1 { font-size: 56px; }
  .hero-cn { font-size: 15px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-media { top: 530px; height: 300px; }
  .hero-badge { width: 85px; height: 85px; right: -8px; }
  .hero-badge b { font-size: 39px; }
  .hero-badge span { display: none; }
  .hero-footer { left: 20px; right: 20px; }
  .section-title h2, .vision h2, .section-heading-row h2, .performance h2, .partners h2, .contact h2 { font-size: 39px; }
  .about-copy { grid-template-columns: 1fr; margin-top: 45px; }
  .about-copy .lead { grid-column: auto; font-size: 17px; }
  .about-gallery { grid-template-columns: 1fr 1fr; height: 520px; }
  .about-gallery figure:first-child { grid-column: 1 / -1; }
  .principle { padding-left: 20px; padding-right: 20px; }
  .principle-top { align-items: flex-start; gap: 20px; flex-direction: column; }
  .principle-grid { grid-template-columns: 1fr; }
  .principle-grid article { min-height: auto; padding: 50px 0; }
  .principle-grid h3 { margin-top: 45px; }
  .principle-result { grid-column: auto; flex-direction: column; gap: 7px; padding: 45px 0; }
  .vision-visual { height: 350px; }
  .vision-circle { width: 280px; height: 280px; }
  .section-heading-row, .performance-head { grid-template-columns: 1fr; gap: 28px; }
  .scene-grid { height: auto; grid-template-columns: 1fr; }
  .scene-grid article { height: 440px; }
  .performance { padding-left: 20px; padding-right: 20px; }
  .performance-image { height: 340px; object-fit: cover; object-position: center; }
  .partner-board { grid-template-columns: 1fr 1fr; }
  .contact { padding-left: 20px; padding-right: 20px; }
  .contact-details { grid-template-columns: 1fr; margin-top: 55px; }
  .contact-details div { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.2); }
  .contact-details div + div { padding-left: 0; }
  footer { grid-template-columns: 1fr; padding-top: 30px; padding-bottom: 30px; text-align: center; }
  .footer-brand { justify-self: center; }
  footer > a:last-child { justify-self: center; }
}

@media (prefers-reduced-motion: no-preference) {
  .hero-image-wrap { animation: rise 850ms cubic-bezier(.2,.8,.2,1) both; }
  @keyframes rise { from { opacity: 0; transform: translateY(32px); } to { opacity: 1; transform: translateY(0); } }
}