:root {
  color-scheme: dark;
  --bg: #080b12;
  --bg-deep: #05070c;
  --bg-soft: #0d121b;
  --panel: #131925;
  --panel-light: #1a2130;
  --paper: #e5d4a5;
  --paper-soft: #f0e8d3;
  --line: #293140;
  --gold-line: #8e7440;
  --gold: #d7b66b;
  --gold-light: #f1d88e;
  --ink: #f7f4ec;
  --muted: #adb3bf;
  --dim: #7f8795;
  --dark-ink: #17140e;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 120px; }
body { margin: 0; min-width: 320px; overflow-x: hidden; background: var(--bg); color: var(--ink); font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif; line-height: 1.72; text-rendering: optimizeLegibility; }
a { color: inherit; }
img { display: block; max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--gold-light); outline-offset: 4px; }
.skip-link { position: fixed; z-index: 1000; left: 18px; top: -80px; padding: 10px 16px; background: var(--gold-light); color: var(--dark-ink); font-weight: 800; text-decoration: none; }
.skip-link:focus { top: 18px; }
.site-shell { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }

.site-header { position: sticky; z-index: 100; top: 0; border-bottom: 1px solid rgba(215,182,107,.22); background: rgba(8,11,18,.95); backdrop-filter: blur(16px); }
.header-inner { min-height: 76px; display: flex; align-items: center; gap: 24px; }
.brand { min-width: 186px; display: inline-flex; align-items: center; gap: 11px; text-decoration: none; }
.brand img, .footer-brand img { border: 1px solid rgba(215,182,107,.55); border-radius: 12px; }
.brand span { display: grid; line-height: 1.2; }
.brand strong { font-size: 18px; letter-spacing: .08em; }
.brand small { margin-top: 5px; color: var(--muted); font-size: 9px; letter-spacing: .08em; }
.main-nav { flex: 1; display: flex; justify-content: center; gap: 18px; }
.main-nav a, .header-action { color: #d9dce2; font-size: 13px; text-decoration: none; white-space: nowrap; }
.main-nav a:hover { color: var(--gold-light); }
.header-action { padding: 8px 15px; border: 1px solid var(--gold-line); color: var(--gold-light); }

.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); }
.hero::before { position: absolute; content: ""; width: 560px; height: 560px; right: -110px; top: 30px; border: 1px solid rgba(215,182,107,.12); transform: rotate(18deg); pointer-events: none; }
.hero-grid { min-height: 730px; display: grid; grid-template-columns: 1.04fr .96fr; align-items: center; gap: 76px; padding-block: 84px; }
.hero-copy, .brand-orbit { position: relative; z-index: 1; }
.eyebrow { display: flex; align-items: center; gap: 12px; margin: 0 0 20px; color: var(--gold); font-size: 12px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow span { min-width: 30px; height: 22px; display: inline-grid; place-items: center; border: 1px solid rgba(215,182,107,.55); font-size: 10px; }
h1, h2, h3, p { overflow-wrap: anywhere; }
h1 { margin: 0; font-size: clamp(50px,6.2vw,80px); line-height: 1.08; letter-spacing: -.045em; }
h1 em { color: var(--gold-light); font-style: normal; }
.hero-lead { max-width: 680px; margin: 30px 0 0; color: #e9e6df; font-size: 20px; }
.hero-description { max-width: 660px; margin: 13px 0 0; color: var(--muted); font-size: 15px; }
.hero-actions { display: flex; gap: 13px; margin-top: 30px; }
.button { min-height: 47px; display: inline-flex; align-items: center; justify-content: center; padding: 10px 22px; border: 1px solid var(--gold-line); font-size: 14px; font-weight: 800; text-decoration: none; }
.button-primary { background: var(--gold-light); color: var(--dark-ink); }
.button-secondary { color: var(--gold-light); }
.audience-list { display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 34px 0 0; padding: 20px 0 0; border-top: 1px solid var(--line); color: var(--muted); list-style: none; font-size: 13px; }
.audience-list li::before { content: "◆"; margin-right: 8px; color: var(--gold); font-size: 7px; }

.brand-orbit { min-height: 540px; display: grid; place-items: center; }
.orbit-mark { position: absolute; right: -10px; top: 0; color: rgba(215,182,107,.06); font: 700 180px/1 Georgia,serif; }
.orbit-core { position: relative; z-index: 2; width: 244px; height: 244px; display: flex; flex-direction: column; align-items: center; justify-content: center; border: 1px solid rgba(215,182,107,.55); border-radius: 50%; background: #0c111a; box-shadow: 0 0 0 38px rgba(215,182,107,.035), 0 0 0 76px rgba(215,182,107,.025); text-align: center; }
.orbit-core img { border-radius: 16px; }
.orbit-core span { margin-top: 13px; color: var(--gold-light); font-size: 18px; font-weight: 900; letter-spacing: .08em; }
.orbit-core strong { max-width: 165px; margin-top: 4px; color: var(--muted); font-size: 11px; }
.orbit-product { position: absolute; z-index: 3; width: 195px; padding: 17px 18px; border: 1px solid var(--line); background: var(--panel); box-shadow: 0 20px 40px rgba(0,0,0,.3); }
.orbit-product small { color: var(--gold); letter-spacing: .1em; }
.orbit-product b, .orbit-product span { display: block; }
.orbit-product b { margin-top: 5px; font-size: 16px; }
.orbit-product span { margin-top: 3px; color: var(--muted); font-size: 11px; }
.orbit-app { left: 0; top: 104px; }
.orbit-cockpit { right: -8px; bottom: 103px; }
.orbit-proof { position: absolute; bottom: 20px; display: flex; gap: 18px; color: var(--dim); font-size: 11px; }
.orbit-proof span::before { content: "·"; margin-right: 6px; color: var(--gold); }

.section { padding-block: 104px; border-bottom: 1px solid var(--line); }
.section-heading { max-width: 790px; margin-bottom: 50px; }
.section-heading h2, .cockpit-copy h2, .about-grid h2, .contact-grid h2, .download-layout h2 { margin: 0; font-size: clamp(34px,4.5vw,54px); line-height: 1.18; letter-spacing: -.035em; }
.section-heading > p:last-child, .split-heading > p, .cockpit-copy > p, .about-copy > p, .contact-grid > div > p:last-of-type, .download-layout > div > p:last-child { color: var(--muted); }
.split-heading { max-width: none; display: grid; grid-template-columns: 1.05fr .95fr; gap: 86px; align-items: end; }
.split-heading > p { margin: 0 0 4px; }

.products-section { background: var(--bg-soft); }
.product-system { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.product-panel { min-height: 530px; display: flex; flex-direction: column; padding: 34px; border: 1px solid var(--line); }
.product-panel-app { background: var(--panel); }
.product-panel-cockpit { background: var(--paper); color: var(--dark-ink); }
.product-index { color: var(--gold); font: 36px/1 Georgia,serif; }
.product-panel-cockpit .product-index { color: #6d5626; }
.product-title { margin-top: 62px; }
.product-title > span { color: var(--gold); font-size: 11px; font-weight: 800; letter-spacing: .12em; }
.product-panel-cockpit .product-title > span { color: #6d5626; }
.product-title h3 { margin: 8px 0 12px; font-size: clamp(26px,3vw,36px); line-height: 1.25; }
.product-title p { margin: 0; color: var(--muted); }
.product-panel-cockpit .product-title p { color: #514731; }
.capability-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 30px 0 0; padding: 0; list-style: none; }
.capability-tags li { padding: 7px 10px; border: 1px solid #333c4c; color: #d7dae0; font-size: 12px; }
.product-panel-cockpit .capability-tags li { border-color: rgba(23,20,14,.25); color: #3b3324; }
.product-status { display: grid; grid-template-columns: auto 1fr; gap: 12px; align-items: baseline; margin: 24px 0 0; padding-top: 18px; border-top: 1px solid var(--line); }
.product-status span { color: var(--gold); font-size: 11px; font-weight: 800; letter-spacing: .1em; white-space: nowrap; }
.product-status strong { color: #e6e8ec; font-size: 14px; }
.product-panel-cockpit .product-status { border-top-color: rgba(23,20,14,.22); }
.product-panel-cockpit .product-status span { color: #6d5626; }
.product-panel-cockpit .product-status strong { color: #30291d; }
.product-panel > a { align-self: flex-start; margin-top: auto; padding-top: 28px; color: var(--gold-light); font-weight: 800; text-decoration: none; }
.product-panel-cockpit > a { color: #4e3b13; }
.product-panel > a span { margin-left: 8px; }

.agents-section { background: var(--bg-deep); }
.agent-list { border-top: 1px solid var(--gold-line); }
.agent-row { display: grid; grid-template-columns: 70px 240px 1fr; gap: 22px; align-items: start; padding: 30px 0; border-bottom: 1px solid var(--line); }
.agent-number { color: var(--gold); font: 26px/1.2 Georgia,serif; }
.agent-name small { color: var(--dim); font-size: 11px; }
.agent-name h3 { margin: 5px 0 0; font-size: 21px; }
.agent-row dl { display: grid; grid-template-columns: 1.25fr 1.15fr .8fr; gap: 24px; margin: 0; }
.agent-row dl div { padding-left: 18px; border-left: 1px solid var(--line); }
.agent-row dt { color: var(--gold); font-size: 11px; font-weight: 800; }
.agent-row dd { margin: 6px 0 0; color: var(--muted); font-size: 13px; }

.scenarios-section { background: var(--paper-soft); color: var(--dark-ink); }
.scenarios-section .eyebrow { color: #69521f; }
.scenarios-section .eyebrow span { border-color: #826a36; }
.scenarios-section .split-heading > p { color: #574e3c; }
.scenario-stack { border-top: 1px solid rgba(23,20,14,.45); }
.scenario-stack article { display: grid; grid-template-columns: 70px 1fr .72fr; gap: 28px; padding: 27px 0; border-bottom: 1px solid rgba(23,20,14,.2); }
.scenario-stack article > b { color: #785e25; font: 25px/1 Georgia,serif; }
.scenario-stack h3 { margin: 0 0 6px; font-size: 20px; }
.scenario-stack p { margin: 3px 0; color: #4e4636; font-size: 13px; }
.scenario-stack article > span { color: #685e4b; font-size: 12px; }

.cockpit-section { position: relative; overflow: hidden; background: #0a1019; }
.cockpit-section::after { position: absolute; content: ""; width: 500px; height: 500px; right: -240px; top: 20px; border: 1px solid rgba(215,182,107,.12); transform: rotate(35deg); }
.cockpit-grid { position: relative; z-index: 1; display: grid; grid-template-columns: .85fr 1.15fr; gap: 70px; align-items: center; }
.cockpit-copy > p { max-width: 520px; }
.role-chain { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 30px 0 0; color: #d9dce2; font-size: 12px; }
.role-chain span { padding: 7px 10px; border: 1px solid var(--line); }
.role-chain i { color: var(--gold); font-style: normal; }
.boundary-note { margin-top: 26px; padding-left: 14px; border-left: 2px solid var(--gold-line); font-size: 12px; }
.cockpit-map { position: relative; min-height: 440px; padding: 28px; border: 1px solid #343d4c; background: #101722; }
.map-caption { display: flex; justify-content: space-between; color: var(--gold); font-size: 11px; letter-spacing: .08em; }
.map-caption small { color: var(--dim); }
.map-core { width: 72%; margin: 52px auto 0; padding: 22px; border: 1px solid var(--gold-line); text-align: center; }
.map-core small, .map-core strong { display: block; }
.map-core small { color: var(--gold); }
.map-core strong { margin-top: 5px; }
.map-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 9px; margin-top: 35px; }
.map-row article { min-height: 92px; padding: 15px; border: 1px solid var(--line); }
.map-row small, .map-row b { display: block; }
.map-row small { color: var(--dim); font-size: 10px; }
.map-row b { margin-top: 6px; font-size: 12px; }
.map-flow { display: flex; align-items: center; justify-content: center; gap: 10px; margin-top: 30px; color: var(--muted); font-size: 11px; }
.map-flow i { width: 28px; height: 1px; background: var(--gold-line); }
.cockpit-capabilities { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(5,1fr); gap: 1px; margin-top: 60px; background: var(--line); }
.cockpit-capabilities span { min-height: 68px; display: grid; place-items: center; padding: 12px; background: var(--panel); color: #d7dae0; font-size: 12px; text-align: center; }

.demo-section { background: var(--bg-soft); }
.demo-panel { display: grid; grid-template-columns: minmax(0,1.35fr) auto; gap: 54px; align-items: center; padding-block: 34px; border-top: 1px solid var(--gold-line); border-bottom: 1px solid var(--line); }
.demo-panel h2 { margin: 0; font-size: clamp(30px,4vw,48px); line-height: 1.2; }
.demo-panel > div:first-child > p:last-child { max-width: 760px; margin: 18px 0 0; color: var(--muted); }
.demo-actions { display: grid; gap: 12px; min-width: 180px; }

.capabilities-section { background: var(--bg-deep); }
.capabilities-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 80px; align-items: start; }
.capabilities-layout .section-heading { position: sticky; top: 135px; margin: 0; }
.capability-list { border-top: 1px solid var(--gold-line); }
.capability-list article { display: grid; grid-template-columns: 72px 1fr; gap: 20px; padding: 25px 0; border-bottom: 1px solid var(--line); }
.capability-list article > b { width: 48px; height: 48px; display: grid; place-items: center; border: 1px solid var(--gold-line); color: var(--gold-light); font-family: serif; }
.capability-list h3 { margin: 0 0 5px; font-size: 20px; }
.capability-list p { margin: 0; color: var(--muted); }

.services-section { background: #f0e8d3; color: var(--dark-ink); }
.services-section .eyebrow { color: #69521f; }
.services-section .eyebrow span { border-color: #826a36; }
.services-section .split-heading > p { color: #574e3c; }
.service-lines { display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid rgba(23,20,14,.4); border-left: 1px solid rgba(23,20,14,.18); }
.service-lines article { min-height: 190px; padding: 26px; border-right: 1px solid rgba(23,20,14,.18); border-bottom: 1px solid rgba(23,20,14,.18); }
.service-lines b { color: #765c22; font: 22px/1 Georgia,serif; }
.service-lines h3 { margin: 38px 0 6px; font-size: 18px; }
.service-lines p { margin: 0; color: #5a513f; font-size: 13px; }

.security-section { background: var(--bg-soft); }
.security-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.security-grid article { padding: 27px 23px; border-top: 2px solid var(--gold-line); background: var(--panel); }
.security-grid span { color: var(--gold); font: 30px/1 Georgia,serif; }
.security-grid h3 { margin: 38px 0 9px; font-size: 18px; }
.security-grid p { margin: 0; color: var(--muted); font-size: 13px; }

.faq-section { background: var(--bg-deep); }
.faq-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 85px; align-items: start; }
.faq-grid .section-heading { position: sticky; top: 135px; margin: 0; }
.faq-list { border-top: 1px solid var(--gold-line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; padding: 23px 42px 23px 0; cursor: pointer; font-size: 16px; font-weight: 800; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { position: absolute; right: 2px; content: "+"; color: var(--gold); font-size: 23px; font-weight: 400; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { margin: -4px 50px 23px 0; color: var(--muted); }

.about-section { background: var(--paper); color: var(--dark-ink); }
.about-section .eyebrow { color: #69521f; }
.about-section .eyebrow span { border-color: #826a36; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 86px; }
.about-copy > p { color: #514936; }
.about-copy p:first-child { margin-top: 0; }
.about-copy blockquote { margin: 28px 0; padding: 17px 0 17px 22px; border-left: 3px solid #755b20; font-size: 24px; font-weight: 900; }

.contact-section { background: #111722; }
.contact-grid { display: grid; grid-template-columns: 1fr .9fr; gap: 90px; align-items: center; }
.contact-intents { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.contact-intents span { padding: 7px 11px; border: 1px solid var(--line); color: #d8dbe2; font-size: 12px; }
.contact-list { margin: 0; border-top: 1px solid var(--gold-line); }
.contact-list div { display: grid; grid-template-columns: .65fr 1.35fr; gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.contact-list dt { color: var(--dim); }
.contact-list dd { margin: 0; font-weight: 800; text-align: right; }
.contact-list a { color: var(--gold-light); }

.download-section { padding-block: 78px; background: #0a0e16; }
.download-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 75px; align-items: center; }
.download-layout h2 { font-size: clamp(29px,3.8vw,43px); }
.download-status { display: grid; gap: 10px; }
.download-status > div { display: grid; grid-template-columns: 90px 1fr auto; gap: 16px; align-items: center; padding: 17px; border: 1px solid var(--line); background: var(--panel); }
.download-status span { color: var(--gold); font-weight: 900; }
.download-status strong { color: #d9dce2; font-size: 12px; }
.download-status button { padding: 7px 10px; border: 1px solid #4b5361; border-radius: 0; background: transparent; color: var(--dim); font: inherit; font-size: 11px; cursor: not-allowed; }

.site-footer { padding-block: 52px 28px; background: #05070b; }
.footer-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 34px 70px; }
.footer-brand { display: flex; align-items: center; gap: 13px; }
.footer-brand div { display: grid; }
.footer-brand strong { font-size: 18px; letter-spacing: .08em; }
.footer-brand span { color: var(--dim); font-size: 12px; }
.site-footer nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 11px 20px; align-items: center; }
.site-footer nav a { color: #d4d7dd; font-size: 12px; text-decoration: none; }
.site-footer nav a:hover { color: var(--gold-light); }
.footer-legal { grid-column: 1/-1; display: flex; flex-wrap: wrap; gap: 10px 22px; padding-top: 23px; border-top: 1px solid var(--line); color: var(--dim); font-size: 12px; }
.footer-legal a { color: #bdc1ca; }

@media (max-width: 1080px) {
  .header-inner { flex-wrap: wrap; gap: 0 18px; padding-block: 10px; }
  .main-nav { order: 3; flex: 0 0 100%; justify-content: space-between; gap: 10px; margin-top: 8px; padding-top: 10px; border-top: 1px solid rgba(215,182,107,.16); }
  .main-nav a { font-size: 12px; }
  .header-action { margin-left: auto; }
  .hero-grid { gap: 28px; }
  .orbit-product { width: 170px; }
  .agent-row { grid-template-columns: 55px 210px 1fr; }
  .agent-row dl { gap: 15px; }
  .security-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 780px) {
  html { scroll-padding-top: 170px; }
  .site-shell { width: min(calc(100% - 32px),var(--max)); }
  .main-nav { display: grid; grid-template-columns: repeat(4,1fr); gap: 7px 10px; }
  .main-nav a { text-align: center; }
  .hero-grid { min-height: auto; grid-template-columns: 1fr; padding-block: 66px 78px; }
  .hero-copy { max-width: 650px; }
  h1 { font-size: clamp(44px,12.8vw,66px); }
  .hero-lead { font-size: 18px; }
  .brand-orbit { min-height: 500px; }
  .orbit-app { left: 5%; }
  .orbit-cockpit { right: 3%; }
  .section { padding-block: 78px; }
  .split-heading, .cockpit-grid, .capabilities-layout, .faq-grid, .about-grid, .contact-grid, .download-layout { grid-template-columns: 1fr; gap: 38px; }
  .product-system { grid-template-columns: 1fr; }
  .product-panel { min-height: 480px; }
  .agent-row { grid-template-columns: 52px 1fr; gap: 13px; }
  .agent-row dl { grid-column: 2; grid-template-columns: 1fr; gap: 10px; }
  .agent-row dl div { padding: 0 0 0 14px; }
  .scenario-stack article { grid-template-columns: 50px 1fr; gap: 16px; }
  .scenario-stack article > span { grid-column: 2; }
  .cockpit-capabilities { grid-template-columns: 1fr 1fr; }
  .demo-panel { grid-template-columns: 1fr; gap: 28px; }
  .demo-actions { grid-template-columns: 1fr 1fr; }
  .capabilities-layout .section-heading, .faq-grid .section-heading { position: static; }
  .service-lines { grid-template-columns: 1fr 1fr; }
  .download-status > div { grid-template-columns: 82px 1fr; }
  .download-status button { grid-column: 2; justify-self: start; }
  .footer-grid { grid-template-columns: 1fr; }
  .site-footer nav { justify-content: flex-start; }
  .footer-legal { grid-column: auto; }
}

@media (max-width: 480px) {
  .site-shell { width: min(calc(100% - 24px),var(--max)); }
  .brand { min-width: 0; }
  .brand img { width: 38px; height: 38px; }
  .brand strong { font-size: 16px; }
  .brand small { display: none; }
  .header-action { padding: 7px 10px; font-size: 12px; }
  .main-nav { grid-template-columns: repeat(3,1fr); }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .audience-list { display: grid; grid-template-columns: 1fr 1fr; }
  .brand-orbit { min-height: 470px; }
  .orbit-core { width: 205px; height: 205px; box-shadow: 0 0 0 25px rgba(215,182,107,.035),0 0 0 50px rgba(215,182,107,.025); }
  .orbit-core img { width: 58px; height: 58px; }
  .orbit-product { width: 152px; padding: 13px; }
  .orbit-product b { font-size: 13px; }
  .orbit-app { left: 0; top: 70px; }
  .orbit-cockpit { right: 0; bottom: 80px; }
  .orbit-proof { gap: 9px; font-size: 9px; }
  .product-panel { min-height: auto; padding: 27px; }
  .product-title { margin-top: 42px; }
  .product-panel > a { margin-top: 30px; }
  .agent-row { grid-template-columns: 42px 1fr; }
  .map-row { grid-template-columns: 1fr; }
  .map-row article { min-height: auto; }
  .map-flow { flex-wrap: wrap; }
  .cockpit-capabilities { grid-template-columns: 1fr; }
  .product-status { grid-template-columns: 1fr; gap: 4px; }
  .demo-actions { grid-template-columns: 1fr; }
  .service-lines { grid-template-columns: 1fr; }
  .security-grid { grid-template-columns: 1fr; }
  .contact-list div { grid-template-columns: 1fr; gap: 3px; }
  .contact-list dd { text-align: left; }
  .download-status > div { grid-template-columns: 1fr; }
  .download-status button { grid-column: 1; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }