:root {
  --blue-950: #071d43;
  --blue-900: #09285b;
  --blue-800: #0a3d91;
  --blue-700: #0b58d3;
  --blue-600: #1670e8;
  --blue-100: #e9f2ff;
  --blue-50: #f4f8ff;
  --ink: #10213f;
  --muted: #63718a;
  --line: #dfe7f2;
  --surface: #f6f8fb;
  --white: #fff;
  --shadow: 0 18px 55px rgba(18, 52, 101, .09);
  --container: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 78px; }
body { margin: 0; min-width: 320px; color: var(--ink); background: #fff; font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif; font-size: 16px; line-height: 1.75; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.container { width: min(var(--container), calc(100% - 48px)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 999; top: 8px; left: 8px; padding: 8px 14px; color: #fff; background: var(--blue-800); transform: translateY(-150%); border-radius: 5px; }
.skip-link:focus { transform: translateY(0); }

.site-header { position: sticky; z-index: 100; top: 0; height: 76px; background: rgba(255,255,255,.96); border-bottom: 1px solid rgba(217,227,240,.9); backdrop-filter: blur(16px); }
.nav-wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 36px; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--blue-950); font-size: 21px; font-weight: 760; letter-spacing: -.5px; white-space: nowrap; }
.brand-mark { width: 40px; height: 40px; display: grid; place-items: center; color: #fff; background: linear-gradient(145deg, var(--blue-600), var(--blue-900)); border-radius: 10px 3px 10px 3px; font-size: 14px; font-weight: 800; box-shadow: 0 7px 18px rgba(11,88,211,.22); }
.main-nav { display: flex; align-items: stretch; height: 100%; gap: 35px; }
.main-nav a { position: relative; display: grid; place-items: center; color: #3c4d68; font-size: 15px; white-space: nowrap; }
.main-nav a::after { content: ""; position: absolute; right: 50%; bottom: -1px; left: 50%; height: 3px; background: var(--blue-700); transition: left .2s, right .2s; }
.main-nav a:hover, .main-nav a:focus-visible, .main-nav a.active { color: var(--blue-700); }
.main-nav a:hover::after, .main-nav a:focus-visible::after, .main-nav a.active::after { right: 0; left: 0; }

.hero { position: relative; overflow: hidden; min-height: 690px; display: grid; align-items: center; background: linear-gradient(104deg, #f8fbff 0%, #f3f8ff 45%, #eaf3ff 100%); }
.hero::before { content: ""; position: absolute; width: 560px; height: 560px; top: -280px; left: -160px; border: 1px solid rgba(22,112,232,.11); border-radius: 50%; box-shadow: 0 0 0 80px rgba(22,112,232,.025), 0 0 0 160px rgba(22,112,232,.018); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 46% 54%; align-items: center; min-height: 690px; }
.hero-copy { position: relative; z-index: 2; padding: 70px 12px 70px 0; }
.eyebrow, .section-kicker { margin: 0 0 15px; color: var(--blue-700); font-size: 13px; font-weight: 700; letter-spacing: 2.8px; }
.eyebrow { display: flex; align-items: center; gap: 10px; }
.eyebrow span { width: 26px; height: 2px; background: var(--blue-700); }
.hero h1 { margin: 0; color: var(--blue-950); font-size: clamp(44px, 4.4vw, 67px); font-weight: 350; line-height: 1.16; letter-spacing: -2.8px; }
.hero h1 strong { display: inline-block; margin-top: 5px; font-weight: 780; }
.hero-slogan { margin: 28px 0 6px; color: var(--blue-700); font-size: 23px; font-weight: 780; letter-spacing: -.3px; }
.hero-subtitle { max-width: 590px; margin: 0 0 16px; color: #173d72; font-size: 18px; font-weight: 640; line-height: 1.65; }
.hero-description { max-width: 570px; margin: 0; color: #596a84; font-size: 16px; line-height: 1.9; }
.hero-proof { display: flex; gap: 24px; margin-top: 31px; color: #375277; font-size: 14px; font-weight: 600; }
.hero-proof span { display: inline-flex; align-items: center; gap: 8px; }
.hero-proof span::before { content: ""; width: 6px; height: 6px; background: var(--blue-600); border: 4px solid #dceaff; border-radius: 50%; }
.hero-visual { position: relative; width: calc(100% + 150px); height: 490px; overflow: hidden; border: 8px solid rgba(255,255,255,.8); border-radius: 130px 0 0 18px; box-shadow: -20px 32px 70px rgba(24,77,149,.15); }
.hero-visual::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(244,249,255,.88) 0%, rgba(244,249,255,.12) 32%, transparent 65%); pointer-events: none; }
.hero-visual img { width: 100%; height: 100%; object-fit: cover; object-position: 54% center; }
.visual-label { position: absolute; z-index: 2; display: flex; align-items: center; gap: 11px; padding: 12px 16px; color: #234264; background: rgba(255,255,255,.91); border: 1px solid rgba(255,255,255,.8); border-radius: 8px; box-shadow: 0 14px 32px rgba(22,69,128,.15); backdrop-filter: blur(10px); font-size: 13px; }
.visual-label b { color: var(--blue-600); font-size: 18px; }
.visual-label i { width: 9px; height: 9px; background: #20bf8a; border: 3px solid #d8f5ec; border-radius: 50%; }
.label-top { top: 55px; left: 105px; }
.label-bottom { right: 60px; bottom: 35px; }
.hero-line { position: absolute; right: 0; bottom: 0; left: 0; height: 4px; background: linear-gradient(90deg, transparent, var(--blue-700) 28%, #5e9dff 72%, transparent); opacity: .65; }

.section { padding: 100px 0; scroll-margin-top: 74px; }
.section-soft { background: var(--surface); }
.section-heading { max-width: 720px; margin: 0 auto 54px; text-align: center; }
.section-heading h2, .about-heading h2, .contact-title h2 { margin: 0; color: var(--blue-950); font-size: 37px; line-height: 1.3; letter-spacing: -1.1px; }
.section-heading > p:last-child { margin: 14px 0 0; color: var(--muted); }
.compact-heading { margin-bottom: 42px; }

.model-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.workflow { position: relative; min-height: 430px; padding: 52px 60px 42px; background: radial-gradient(circle at 30% 12%, #1b65cf, transparent 42%), linear-gradient(145deg, #0a347b, #071c40); border-radius: 18px; box-shadow: var(--shadow); }
.workflow::before { content: ""; position: absolute; inset: 0; opacity: .14; background-image: linear-gradient(rgba(255,255,255,.3) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.3) 1px, transparent 1px); background-size: 31px 31px; mask-image: linear-gradient(to bottom, #000, transparent 90%); border-radius: inherit; }
.workflow-topline { position: relative; display: flex; justify-content: space-between; margin-bottom: 24px; color: #a9c9f7; font-size: 12px; letter-spacing: 1px; }
.flow-node { position: relative; z-index: 1; min-height: 76px; display: flex; align-items: center; gap: 18px; padding: 13px 22px; color: #fff; border: 1px solid rgba(137,187,255,.35); border-radius: 9px; background: rgba(14,68,149,.62); }
.flow-node b { display: block; font-size: 18px; }
.flow-node small { display: block; margin-top: 2px; color: #b9d1ef; font-size: 13px; }
.node-index { display: grid; place-items: center; width: 43px; height: 43px; color: #dcecff; border: 1px solid #4988db; border-radius: 50%; font-size: 12px; }
.route-node { margin-left: 42px; background: linear-gradient(100deg, #0d61d9, #1382e8); box-shadow: 0 14px 34px rgba(4,20,48,.3); }
.human-node { margin-left: 84px; }
.flow-arrow { position: relative; z-index: 1; height: 40px; display: flex; align-items: center; gap: 12px; margin-left: 41px; color: #91b7e8; font-size: 11px; }
.flow-arrow span { width: 1px; height: 100%; background: #4387de; }
.flow-arrow em { font-style: normal; }
.model-copy { display: grid; gap: 38px; }
.numbered-copy { display: grid; grid-template-columns: 58px 1fr; gap: 20px; }
.numbered-copy > span { color: #a8c4e9; font-size: 30px; font-weight: 300; line-height: 1; }
.numbered-copy h3 { margin: 0 0 10px; color: var(--blue-950); font-size: 22px; }
.numbered-copy p { margin: 0; color: var(--muted); line-height: 2; }
.numbered-copy .inline-slogan { margin-top: 14px; padding: 10px 14px; color: #174b8c; background: var(--blue-50); border-left: 3px solid var(--blue-600); border-radius: 0 6px 6px 0; font-size: 14px; font-weight: 650; line-height: 1.7; }

.capability-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.capability-panel { padding: 38px 42px; background: #fff; border: 1px solid #e3eaf4; border-top: 4px solid var(--blue-700); border-radius: 12px; box-shadow: 0 12px 32px rgba(28,59,102,.055); }
.professional-panel { border-top-color: #25a7b7; }
.panel-title { display: flex; align-items: center; gap: 16px; padding-bottom: 26px; border-bottom: 1px solid var(--line); }
.title-icon { width: 51px; height: 51px; display: grid; place-items: center; color: var(--blue-700); background: var(--blue-100); border-radius: 10px; font-size: 20px; font-weight: 800; }
.professional-panel .title-icon { color: #168795; background: #e2f5f6; }
.panel-title p, .panel-title h3 { margin: 0; }
.panel-title p { color: #92a0b3; font-size: 11px; letter-spacing: 1.3px; }
.panel-title h3 { color: var(--blue-950); font-size: 23px; }
.panel-slogan { margin: 20px 0 0; padding: 13px 16px; color: #167985; background: #eefafb; border: 1px solid #d5eff1; border-radius: 7px; font-size: 14px; font-weight: 650; line-height: 1.7; }
.feature-list { list-style: none; margin: 4px 0 0; padding: 0; }
.feature-list li { display: grid; grid-template-columns: 38px 1fr; gap: 14px; padding: 20px 0; border-bottom: 1px solid #edf1f6; }
.feature-list li:last-child { padding-bottom: 2px; border: 0; }
.feature-list li > span { color: #b4c4d9; font-size: 13px; font-weight: 700; }
.feature-list h4 { margin: 0 0 4px; color: #172b49; font-size: 17px; }
.feature-list p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.75; }

.role-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.role-card { position: relative; overflow: hidden; min-height: 240px; padding: 30px 20px 25px; text-align: center; background: #fff; border: 1px solid var(--line); border-radius: 9px; transition: transform .2s, box-shadow .2s, border-color .2s; }
.role-card::after { content: ""; position: absolute; right: 0; bottom: 0; left: 0; height: 3px; background: var(--blue-700); transform: scaleX(0); transition: transform .2s; }
.role-card:hover { transform: translateY(-5px); border-color: #bfd5f2; box-shadow: var(--shadow); }
.role-card:hover::after { transform: scaleX(1); }
.role-card > span { width: 58px; height: 58px; display: grid; place-items: center; margin: 0 auto 20px; color: var(--blue-700); background: var(--blue-50); border: 1px solid #dbe9fb; border-radius: 18px 5px 18px 5px; font-size: 22px; font-weight: 700; }
.role-card h3 { margin: 0 0 12px; color: #172a49; font-size: 16px; white-space: nowrap; }
.role-card p { margin: 0; color: #718098; font-size: 13px; line-height: 1.85; }

.scene-section { position: relative; overflow: hidden; color: #fff; background: linear-gradient(115deg, #08275e 0%, #0b4dab 100%); }
.scene-section::after { content: ""; position: absolute; width: 440px; height: 440px; right: -160px; bottom: -260px; border: 1px solid rgba(255,255,255,.13); border-radius: 50%; box-shadow: 0 0 0 70px rgba(255,255,255,.02), 0 0 0 140px rgba(255,255,255,.018); }
.scene-grid-wrap { position: relative; z-index: 1; display: grid; grid-template-columns: 290px 1fr; gap: 80px; align-items: center; }
.light-kicker { color: #9cc5ff; }
.scene-intro h2 { margin: 0 0 20px; font-size: 39px; line-height: 1.35; }
.scene-intro > p:not(.section-kicker) { margin: 0; color: #bed2ef; }
.scene-number { display: block; margin-top: 32px; color: rgba(255,255,255,.12); font-size: 70px; font-weight: 800; line-height: 1; }
.scene-grid { display: grid; grid-template-columns: 1fr 1fr; }
.scene-grid article { min-height: 178px; padding: 28px 34px; border: 1px solid rgba(167,201,246,.2); }
.scene-grid article:nth-child(1) { border-radius: 10px 0 0 0; }
.scene-grid article:nth-child(2) { border-radius: 0 10px 0 0; }
.scene-grid article:nth-child(3) { border-radius: 0 0 0 10px; }
.scene-grid article:nth-child(4) { border-radius: 0 0 10px 0; }
.scene-grid span { color: #79aef3; font-size: 12px; font-weight: 700; }
.scene-grid h3 { margin: 7px 0 7px; font-size: 19px; }
.scene-grid p { margin: 0; color: #b9cfee; font-size: 14px; }

.about-grid { display: grid; grid-template-columns: 340px 1fr; gap: 100px; align-items: start; }
.about-heading h2 { font-size: 35px; }
.about-sign { display: flex; align-items: center; gap: 14px; margin-top: 52px; color: #b8cce8; }
.about-sign > span { font-size: 60px; font-weight: 850; line-height: 1; letter-spacing: -4px; }
.about-sign small { padding-left: 14px; border-left: 1px solid #cfd9e7; font-size: 10px; line-height: 1.4; letter-spacing: 1px; }
.about-copy { padding-left: 44px; border-left: 1px solid var(--line); }
.about-copy p { margin: 0 0 22px; color: #53647d; font-size: 17px; line-height: 2.1; }
.about-copy p:first-child::first-letter { color: var(--blue-700); font-size: 36px; font-weight: 800; line-height: 1; }

.contact-section { padding-top: 20px; }
.contact-card { display: grid; grid-template-columns: 370px 1fr; gap: 80px; padding: 55px 65px; color: #fff; background: linear-gradient(115deg, #092a61, #0b59c8); border-radius: 15px; box-shadow: 0 24px 65px rgba(8,51,115,.18); }
.contact-title h2 { color: #fff; font-size: 35px; }
.contact-title > p:last-child { margin: 14px 0 0; color: #bcd2f1; }
.contact-list { display: grid; grid-template-columns: 1fr 1fr; gap: 24px 40px; margin: 0; font-style: normal; }
.contact-list div { padding-bottom: 15px; border-bottom: 1px solid rgba(255,255,255,.17); }
.contact-list span, .contact-list strong, .contact-list a { display: block; }
.contact-list span { margin-bottom: 4px; color: #94b9ec; font-size: 12px; }
.contact-list strong, .contact-list a { color: #fff; font-size: 15px; font-weight: 550; }
.contact-list a:hover, .contact-list a:focus-visible { text-decoration: underline; text-underline-offset: 4px; }

.site-footer { margin-top: 88px; padding: 41px 0 36px; color: #8490a2; background: #07172f; text-align: center; font-size: 13px; }
.site-footer p { margin: 9px 0; }
.site-footer .footer-domain { margin: -7px 0 15px; color: #6f99d2; font-size: 12px; letter-spacing: 1.6px; }
.footer-links { display: flex; justify-content: center; gap: 0; margin-bottom: 20px; }
.footer-links a { padding: 0 20px; color: #d3dbea; border-right: 1px solid #35435a; }
.footer-links a:last-child { border: 0; }
.footer-links a:hover, .footer-links a:focus-visible, .footer-links a.active { color: #75aaff; }
.filing { display: flex; justify-content: center; align-items: center; }
.filing a { color: #aeb9c9; }
.filing a:hover, .filing a:focus-visible { color: #fff; text-decoration: underline; }

.legal-main { background: #f7f9fc; }
.legal-hero { padding: 68px 0 58px; color: #fff; background: linear-gradient(110deg, #08265b, #0b5bcf); }
.legal-hero h1 { margin: 0; font-size: 42px; line-height: 1.3; }
.legal-hero p:last-child { margin: 10px 0 0; color: #b8d3f5; font-size: 14px; }
.legal-layout { display: grid; grid-template-columns: 230px 1fr; gap: 55px; padding-top: 62px; padding-bottom: 85px; }
.legal-layout aside { position: sticky; top: 115px; align-self: start; padding: 24px; color: #6f7d91; background: #fff; border: 1px solid var(--line); border-top: 3px solid var(--blue-700); border-radius: 8px; font-size: 13px; }
.legal-layout aside b { color: var(--blue-950); font-size: 18px; }
.legal-layout aside p { margin: 5px 0 24px; }
.legal-layout aside span { color: #9aa6b6; }
.legal-content { padding: 46px 55px 54px; background: #fff; border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 12px 40px rgba(27,54,92,.05); }
.legal-lead { margin: 0 0 36px; padding: 20px 24px; color: #50647e; background: var(--blue-50); border-left: 3px solid var(--blue-700); }
.legal-content section { padding: 27px 0; border-bottom: 1px solid #e9eef5; }
.legal-content h2 { display: flex; align-items: baseline; gap: 14px; margin: 0 0 13px; color: #142a4a; font-size: 21px; }
.legal-content h2 span { color: #9fbae0; font-size: 13px; }
.legal-content p { margin: 0; color: #5d6c81; line-height: 2; }
.legal-content p a { color: var(--blue-700); }
.back-home { display: inline-block; margin-top: 37px; color: var(--blue-700); font-weight: 650; }

@media (max-width: 1050px) {
  .main-nav { gap: 18px; }
  .hero-grid { grid-template-columns: 50% 50%; }
  .hero-visual { width: calc(100% + 90px); }
  .model-grid { gap: 38px; }
  .workflow { padding-inline: 38px; }
  .role-grid { grid-template-columns: repeat(3, 1fr); }
  .role-card { min-height: 220px; }
}

@media (max-width: 820px) {
  html { scroll-padding-top: 68px; }
  .container { width: min(100% - 32px, var(--container)); }
  .site-header { height: auto; min-height: 68px; }
  .nav-wrap { flex-wrap: wrap; gap: 0; padding: 12px 0 8px; }
  .brand { width: 100%; justify-content: center; margin-bottom: 8px; }
  .main-nav { width: 100%; height: auto; overflow-x: auto; justify-content: flex-start; gap: 23px; padding: 0 4px; scrollbar-width: none; }
  .main-nav a { min-height: 38px; }
  .hero, .hero-grid { min-height: 0; }
  .hero-grid { display: block; padding: 50px 0 65px; }
  .hero-copy { padding: 0 0 35px; }
  .hero h1 { font-size: 44px; }
  .hero-visual { width: 100%; height: 390px; border-radius: 45px 8px 8px 8px; }
  .model-grid, .capability-grid, .about-grid, .contact-card, .legal-layout { grid-template-columns: 1fr; }
  .model-grid { gap: 40px; }
  .scene-grid-wrap { grid-template-columns: 1fr; gap: 35px; }
  .scene-intro h2 br { display: none; }
  .about-grid { gap: 35px; }
  .about-sign { margin-top: 25px; }
  .about-copy { padding: 0; border: 0; }
  .contact-card { gap: 34px; padding: 45px 38px; }
  .legal-layout { gap: 24px; }
  .legal-layout aside { position: static; }
}

@media (max-width: 560px) {
  .container { width: min(100% - 28px, var(--container)); }
  .section { padding: 72px 0; }
  .hero-grid { padding-top: 42px; }
  .hero h1 { font-size: 37px; letter-spacing: -1.6px; }
  .hero-slogan { font-size: 21px; }
  .hero-subtitle { font-size: 17px; }
  .hero-proof { flex-wrap: wrap; gap: 10px 18px; }
  .hero-visual { height: 310px; }
  .label-top { top: 18px; left: 16px; }
  .label-bottom { right: 16px; bottom: 18px; }
  .section-heading h2, .about-heading h2, .contact-title h2 { font-size: 30px; }
  .workflow { min-height: 410px; padding: 38px 20px; }
  .route-node { margin-left: 18px; }
  .human-node { margin-left: 36px; }
  .capability-panel { padding: 30px 24px; }
  .role-grid { grid-template-columns: 1fr 1fr; }
  .role-card h3 { white-space: normal; }
  .scene-grid { grid-template-columns: 1fr; }
  .scene-grid article { border-radius: 0 !important; }
  .contact-card { padding: 38px 24px; }
  .contact-list { grid-template-columns: 1fr; }
  .footer-links { flex-wrap: wrap; row-gap: 12px; }
  .filing { flex-wrap: wrap; }
  .legal-hero { padding: 48px 0; }
  .legal-hero h1 { font-size: 35px; }
  .legal-layout { padding-top: 30px; }
  .legal-content { padding: 28px 22px 38px; }
}

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