@charset "UTF-8";
:root {
  --navy: #173f79; --blue: #168acf; --ice: #cce8fa; --pale: #eff9fd;
  --ink: #151f30; --muted: #5c6b7b; --rule: #bddbf0; --white: #fff;
  font-family: "Source Han Sans CN", "Noto Sans CJK SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--ink); background: var(--white); font-synthesis: none;
  scroll-behavior: smooth; scroll-padding-top: 2rem;
}
* { box-sizing: border-box; }
body { margin: 0; }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 3px solid var(--blue); outline-offset: 5px; }
::selection { background: var(--ice); color: var(--navy); }
.wrap { width: min(1240px, calc(100% - 100px)); margin-inline: auto; }
.header { display: flex; align-items: center; justify-content: space-between; gap: 28px; min-height: 118px; position: relative; border-bottom: 2px solid var(--navy); }
.header::after { content: ""; width: 66px; height: 14px; background: white; border-top: 2px solid var(--navy); border-left: 2px solid var(--navy); transform: skewX(-42deg); position: absolute; right: 0; bottom: -2px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--navy); font-family: Arial, sans-serif; font-size: 23px; font-weight: 750; letter-spacing: 1.8px; flex-shrink: 0; }
.brand img { width: 65px; height: 65px; }
.brand small { display: block; margin-top: 7px; font-family: "Microsoft YaHei", sans-serif; font-weight: 400; font-size: 12px; letter-spacing: 2px; color: var(--muted); }
nav { display: flex; align-items: center; gap: 29px; font-size: 14px; }
nav a:hover { color: var(--blue); }
.nav-contact { background: var(--navy); color: white; padding: 13px 20px; clip-path: polygon(0 0, 91% 0, 100% 25%, 100% 100%, 8% 100%, 0 75%); }
.nav-contact:hover { background: var(--blue); color: white; }
.nav-contact span { margin-left: 20px; }
.hero { display: grid; grid-template-columns: 1.13fr 1fr; align-items: center; position: relative; gap: 60px; padding-block: 85px 115px; min-height: 725px; }
.hero::before { content: ""; position: absolute; top: 0; bottom: 0; left: 55%; right: -50px; background: var(--pale); clip-path: polygon(20% 0, 100% 0, 100% 100%, 65% 100%, 0 70%, 0 23%); z-index: -1; }
.eyebrow { font-family: Arial, sans-serif; color: var(--blue); font-size: 11px; font-weight: 700; letter-spacing: 1.3px; display: flex; gap: 12px; align-items: center; line-height: 1.7; }
.mini-line { width: 26px; height: 3px; flex-shrink: 0; background: var(--blue); }
h1 { font-size: clamp(42px, 4.6vw, 65px); line-height: 1.35; letter-spacing: 1px; margin: 29px 0 25px; font-weight: 750; }
h1 span { color: var(--navy); }
.hero-intro { font-size: 17px; line-height: 1.95; color: var(--muted); max-width: 430px; margin-bottom: 35px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 40px; font-size: 15px; font-weight: 600; min-height: 55px; padding: 16px 24px; background: var(--navy); color: white; border: 0; clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px)); transition: background .2s; }
.button:hover { background: var(--blue); }
.button span { font-size: 23px; line-height: 1; }
.brand-visual { position: relative; width: 100%; max-width: 470px; margin: 0 auto; }
.visual-label { font: 11px Arial, sans-serif; letter-spacing: 2px; color: var(--muted); margin-bottom: 18px; }
.crystal-frame { position: relative; border: 2px solid var(--navy); background: white; box-shadow: 10px 10px 0 var(--ice); padding: 22px 24px 28px; }
.crystal-frame::after { content: ""; position: absolute; right: -2px; top: -2px; width: 29px; height: 29px; background: linear-gradient(45deg, white 46%, var(--navy) 47%, var(--navy) 51%, var(--pale) 52%); }
.corner-code { position: absolute; left: 20px; top: 19px; font: 12px Arial, sans-serif; letter-spacing: 2px; color: var(--blue); }
.hero-crystal { display: block; width: 100%; height: auto; max-height: 300px; object-fit: contain; }
.visual-wordmark { font: 700 32px Arial, sans-serif; letter-spacing: 6px; color: var(--navy); text-align: center; }
.visual-caption { font: 11px Arial, sans-serif; color: var(--muted); letter-spacing: 2px; text-align: center; margin-top: 10px; }
.city-connection { display: flex; align-items: center; gap: 17px; font: 11px Arial, sans-serif; letter-spacing: 1px; margin-top: 28px; color: var(--navy); }
.city-connection b { display: block; font: 600 17px "Microsoft YaHei", sans-serif; margin-bottom: 6px; }
.city-connection i { height: 2px; background: var(--rule); flex: 1; }
.speed-lines { position: absolute; right: -23px; top: -17px; display: grid; gap: 7px; }
.speed-lines i { width: 44px; height: 7px; background: var(--blue); transform: skewX(-42deg); }
.hero-bottom { display: flex; justify-content: space-between; position: absolute; bottom: 28px; left: 0; right: 0; padding-top: 23px; border-top: 1px solid var(--rule); color: var(--muted); font-size: 12px; letter-spacing: 1px; }
.hero-bottom a span { margin-left: 18px; color: var(--blue); }
.about { padding: 90px 0; background: var(--pale); }
.about-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 70px; }
.section-label { font: 600 12px/2 Arial, sans-serif; color: var(--blue); letter-spacing: 2px; margin: 6px 0 0; }
.section-label span { display: block; color: var(--muted); font-size: 14px; font-weight: 400; letter-spacing: 0; margin-top: 12px; }
h2 { font-size: clamp(30px, 3.2vw, 45px); line-height: 1.45; font-weight: 650; letter-spacing: .5px; color: var(--navy); margin: 0; }
.about-copy { max-width: 650px; line-height: 2; font-size: 17px; color: var(--muted); margin: 26px 0; }
.text-link { font-size: 14px; color: var(--navy); border-bottom: 1px solid var(--navy); padding-bottom: 8px; display: inline-flex; gap: 42px; }
.text-link:hover { color: var(--blue); }
.approach { padding: 70px 0 100px; }
.section-heading { display: flex; justify-content: space-between; align-items: center; gap: 30px; margin-bottom: 50px; }
.section-heading h2 { font-size: 29px; }
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.principle { border: 2px solid var(--navy); padding: 25px 27px 30px; box-shadow: 7px 7px 0 var(--ice); position: relative; }
.principle::after { content: ""; position: absolute; right: -2px; top: -2px; width: 23px; height: 23px; background: linear-gradient(45deg, white 45%, var(--navy) 46%, var(--navy) 52%, white 53%); }
.principle-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; color: var(--blue); font: 10px/1.5 Arial, sans-serif; letter-spacing: .5px; }
.principle-top>span:first-child { font-size: 25px; font-weight: 700; }
.principle h3 { font-size: 23px; color: var(--navy); font-weight: 650; margin: 30px 0 16px; }
.principle p { color: var(--muted); font-size: 15px; line-height: 1.95; margin: 0; }
.insights { background: var(--pale); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); padding: 65px 0; }
.insights-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.insights-title { border-right: 2px solid var(--rule); padding-right: 50px; }
.insights-title h2 { position: relative; font-size: 51px; line-height: 1.25; margin: 22px 0 18px; letter-spacing: 4px; }
.insights-title h2 span { position: absolute; right: 35px; bottom: 0; font-size: 60px; color: var(--blue); font-weight: 400; }
.insights-title>p:last-child { color: var(--muted); font: 11px Arial, sans-serif; letter-spacing: 2px; }
.channel-tag { display: inline-block; color: white; background: var(--navy); font-size: 12px; padding: 10px 22px 10px 16px; clip-path: polygon(0 0, 100% 0, calc(100% - 11px) 100%, 0 100%); }
.insights h3 { font-size: 29px; line-height: 1.5; margin: 16px 0; font-weight: 600; }
.channel-copy { color: var(--muted); font-size: 16px; line-height: 1.95; max-width: 455px; }
.channel-qr { display: flex; align-items: center; gap: 20px; margin-top: 32px; }
.channel-qr img { width: 118px; height: auto; flex-shrink: 0; background: white; padding: 6px; border: 2px solid var(--navy); box-shadow: 6px 6px 0 var(--ice); }
.channel-qr .qr-title { color: var(--navy); font-size: 15px; font-weight: 600; margin: 0 0 8px; }
.channel-qr .qr-sub { color: var(--muted); font-size: 12px; line-height: 1.9; letter-spacing: .5px; margin: 0; }
.contact { display: grid; grid-template-columns: 1.2fr 1fr; gap: 60px; padding-block: 95px; }
.contact .eyebrow { margin-bottom: 22px; }
.contact-action { align-self: center; justify-self: end; }
.contact-action>p { color: var(--muted); line-height: 1.95; font-size: 16px; margin: 0 0 25px; }
.contact-action .email-address { margin: 18px 0 0; font-size: 15px; color: var(--navy); overflow-wrap: anywhere; }
.contact-action .contact-pending { color: var(--navy); font-size: 14px; border-top: 1px solid var(--rule); padding-top: 20px; }
.footer { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; padding-block: 26px; border-top: 2px solid var(--rule); color: var(--muted); font-size: 12px; }
.footer-brand { color: var(--navy); font: 700 17px Arial, sans-serif; letter-spacing: 1px; }
.footer>span:nth-of-type(2) { margin-left: auto; }
.footer>a:last-child { margin-left: 15px; }
.skip-link { position: absolute; top: -80px; left: 12px; z-index: 5; padding: 12px; background: var(--navy); color: white; }
.skip-link:focus { top: 12px; }
.error-page { padding-block: 100px; min-height: 70vh; }
.error-page p { color: var(--muted); }
.error-page .button { margin-top: 25px; }
@media (max-width: 1080px) {
  .wrap { width: calc(100% - 64px); }
  .brand { font-size: 20px; letter-spacing: 1px; }
  .brand img { width: 55px; height: 55px; }
  nav { gap: 18px; font-size: 13px; }
  .hero { gap: 35px; min-height: 670px; }
  .hero::before { right: -32px; }
  .hero h1 { font-size: 48px; }
  .hero-intro { font-size: 16px; }
  .visual-wordmark { font-size: 26px; letter-spacing: 3px; }
  .principle { padding: 22px 20px; }
  .principle-top { flex-wrap: wrap; }
  .insights-grid { gap: 45px; }
}
@media (max-width: 800px) {
  .header { flex-wrap: wrap; padding-block: 20px; gap: 22px; }
  nav { width: 100%; justify-content: space-between; }
  .hero { gap: 30px; }
  .hero h1 { font-size: 42px; }
  .hero .eyebrow { font-size: 9px; letter-spacing: .5px; }
  .hero-crystal { min-height: 200px; }
  .visual-caption { font-size: 9px; letter-spacing: 1px; }
  .about-grid { gap: 35px; }
  .principles { gap: 18px; }
  .principle h3 { font-size: 19px; }
}
@media (max-width: 620px) {
  .wrap { width: calc(100% - 40px); }
  .brand { font-size: 22px; }
  .brand small { font-size: 11px; }
  nav { gap: 12px; flex-wrap: wrap; font-size: 12px; }
  .nav-contact { padding: 10px 13px; }
  .nav-contact span { margin-left: 12px; }
  .hero { display: flex; flex-direction: column; align-items: stretch; padding-block: 35px 95px; gap: 35px; }
  .hero::before { left: 15%; right: -20px; top: 44%; clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%, 0 25%); }
  .hero h1 { font-size: clamp(35px, 9vw, 49px); margin: 23px 0; }
  .hero-intro { font-size: 16px; margin-bottom: 28px; }
  .hero .eyebrow { font-size: 9px; letter-spacing: .4px; }
  .brand-visual { max-width: 340px; width: calc(100% - 18px); margin-block: 10px; }
  .hero-crystal { max-height: 235px; min-height: 0; }
  .crystal-frame { padding: 19px 20px 25px; }
  .visual-wordmark { font-size: 27px; }
  .visual-caption { font-size: 10px; }
  .speed-lines { right: -15px; }
  .speed-lines i { width: 35px; }
  .hero-bottom { font-size: 10px; letter-spacing: 0; padding-top: 20px; bottom: 25px; }
  .hero-bottom a span { margin-left: 8px; }
  .about { padding-block: 55px; }
  .about-grid { grid-template-columns: 1fr; gap: 25px; }
  .section-label { font-size: 11px; }
  .section-label br { display: none; }
  .section-label span { display: inline; margin-left: 20px; font-size: 13px; }
  h2 { font-size: 31px; }
  .about-copy { font-size: 16px; }
  .approach { padding-block: 50px 60px; }
  .section-heading { flex-direction: column; align-items: flex-start; gap: 14px; margin-bottom: 30px; }
  .section-heading h2 { font-size: 25px; }
  .principles { grid-template-columns: 1fr; gap: 24px; }
  .principle { padding: 23px; }
  .principle h3 { font-size: 22px; margin-top: 23px; }
  .principle-top { font-size: 11px; }
  .insights { padding-block: 45px; }
  .insights-grid { grid-template-columns: 1fr; gap: 23px; }
  .insights-title { border-right: 0; border-bottom: 2px solid var(--rule); padding: 0 0 24px; }
  .insights-title h2 { font-size: 40px; }
  .insights-title h2 span { right: 15px; }
  .insights h3 { font-size: 26px; }
  .contact { grid-template-columns: 1fr; padding-block: 55px; gap: 30px; }
  .contact-action { justify-self: start; }
  .footer { gap: 18px; justify-content: space-between; }
  .footer>span:nth-of-type(2), .footer>a:last-child { margin-left: 0; }
  .footer>span { font-size: 11px; }
}
@media (prefers-reduced-motion: reduce) { :root { scroll-behavior: auto; } .button { transition: none; } }