:root {
  --bg: #17191d; --surface: #202329; --paper: #292d34; --text: #efede8;
  --muted: #b7b9bf; --accent: #c9c4dc; --line: #3b3f47; --control-line: #747780;
  --heading-font: "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", SimSun, serif;
  --body-font: "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  --space-1: 8px; --space-2: 16px; --space-3: 24px; --space-4: 40px; --space-5: 64px; --space-6: 96px;
  --radius: 8px; --speed: 180ms; --ease: cubic-bezier(.16,1,.3,1);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 36px; }
body { margin: 0; color: var(--text); background: var(--bg); font: 14px/1.8 var(--body-font); letter-spacing: .025em; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
button { font: inherit; letter-spacing: inherit; color: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }
button, a, summary { touch-action: manipulation; }
button:focus-visible, a:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
p, h1, h2, h3 { margin: 0; }
h1, h2 { font-family: var(--heading-font); font-weight: 500; letter-spacing: -.04em; }
h2 { font-size: clamp(32px, 3.3vw, 46px); line-height: 1.35; }
h3 { font-weight: 500; font-size: 24px; letter-spacing: -.015em; }
button { border: 0; }
.wrap { width: min(1240px, calc(100% - 112px)); margin-inline: auto; }
.section { padding-block: var(--space-6); }
.eyebrow { font-size: 12px; color: var(--muted); letter-spacing: .12em; margin-bottom: var(--space-3); }
.site-header { display: flex; align-items: center; justify-content: space-between; min-height: 104px; border-bottom: 1px solid var(--line); gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 13px; font-size: 24px; font-weight: 500; line-height: 1.2; padding-block: 10px; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 42px; border: 1px solid var(--control-line); font-family: var(--heading-font); font-size: 23px; }
.brand-sub { display: block; color: var(--muted); font-size: 10px; letter-spacing: .15em; margin-top: 5px; font-weight: 400; }
.site-header nav { display: flex; gap: 30px; }
.site-header nav a { min-height: 44px; display: flex; align-items: center; color: var(--muted); }
.site-header nav a:hover { color: var(--text); }
.header-action { min-height: 44px; background: none; font-size: 12px; padding: 8px 0 8px 12px; }
.header-action span { margin-left: 12px; }
.hero { display: grid; grid-template-columns: 1.1fr 1fr; gap: 6%; align-items: center; padding-block: 84px 74px; }
.small-rule { display: inline-block; width: 24px; border-top: 1px solid var(--accent); vertical-align: middle; margin-right: 8px; }
h1 { font-size: clamp(40px, 4.4vw, 64px); line-height: 1.35; }
.hero-intro { color: var(--muted); margin-top: 26px; line-height: 1.9; font-size: 14px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 26px; min-height: 48px; padding: 12px 20px; border: 1px solid var(--control-line); border-radius: 4px; background: none; font-size: 13px; transition: background var(--speed), transform var(--speed); }
.button-primary { background: var(--paper); }
.button:hover { background: var(--surface); }
.button:active { transform: translateY(1px); }
.action-note { font-size: 11px; color: var(--muted); margin-top: 16px; }
.work-preview { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); overflow: hidden; transform: translateY(14px); }
.preview-top { padding: 18px 22px; display: flex; justify-content: space-between; border-bottom: 1px solid var(--line); gap: 20px; }
.preview-brand { font-size: 11px; letter-spacing: .06em; }
.preview-caption { font-size: 10px; color: var(--muted); }
.preview-body { display: grid; grid-template-columns: 54px 1fr; gap: 18px; padding: 30px 24px; background-image: repeating-linear-gradient(0deg, transparent 0 27px, #3b3f4724 27px 28px); }
.preview-index span { color: var(--accent); font-size: 20px; font-family: Georgia, serif; }
.preview-index p { writing-mode: vertical-rl; letter-spacing: .2em; font-size: 11px; margin: 15px auto 0 0; color: var(--muted); }
.script-paper { background: var(--paper); padding: 24px 24px 18px; border-left: 2px solid var(--accent); }
.paper-label { color: var(--muted); font-size: 10px; margin-bottom: 14px; }
.script-paper h2 { font-size: clamp(24px, 2.2vw, 32px); line-height: 1.4; margin-bottom: 24px; }
.script-line { display: grid; grid-template-columns: 30px 1fr; gap: 10px; font-size: 10px; margin-top: 13px; }
.script-line span { color: var(--accent); }
.script-line p { color: var(--muted); }
.paper-bottom { display: flex; gap: 12px; border-top: 1px solid var(--line); padding-top: 16px; margin-top: 24px; font-size: 10px; }
.paper-bottom span:nth-child(2) { color: var(--muted); }
.preview-next { display: flex; align-items: center; gap: 18px; padding: 19px 24px; border-top: 1px solid var(--line); font-size: 10px; }
.preview-next div { display: flex; align-items: center; gap: 12px; }
.preview-number { color: var(--muted); font-family: Georgia, serif; font-size: 18px; }
.connector { color: var(--muted); margin-left: auto; }
.workflow-strip { display: flex; justify-content: space-between; gap: 28px; padding-block: 25px; border-block: 1px solid var(--line); font-size: 11px; color: var(--muted); }
.workflow-strip div { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; }
.workflow-strip i { color: var(--line); font-style: normal; }
.section-heading { margin-bottom: 52px; }
.section-heading .eyebrow { margin-bottom: 14px; }
.section-heading > p:last-child:not(.eyebrow) { margin-top: 16px; color: var(--muted); }
.feature-row { display: grid; grid-template-columns: 130px 1fr 1fr; gap: 40px; padding-block: 36px 42px; border-top: 1px solid var(--line); align-items: start; }
.row-number { color: var(--muted); font-size: 10px; letter-spacing: .06em; padding-top: 9px; }
.feature-lead { margin-top: 12px; color: var(--muted); font-size: 13px; max-width: 24em; }
.feature-detail { display: flex; flex-direction: column; gap: 20px; }
.feature-detail strong { display: block; font-size: 12px; font-weight: 500; margin-bottom: 6px; }
.feature-detail span { color: var(--muted); font-size: 12px; display: block; }
.connection-row { border-top: 1px solid var(--line); display: grid; grid-template-columns: 170px 1fr; align-items: center; row-gap: 12px; padding-top: 28px; font-size: 12px; }
.connection-row > p:first-child { color: var(--muted); }
.connection-row div { display: flex; gap: 36px; font-size: 15px; }
.connection-note { grid-column: 2; color: var(--muted); font-size: 11px; }
.local-section { background: var(--surface); border-block: 1px solid var(--line); padding-block: 80px; }
.local-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12%; }
.local-grid .eyebrow { margin-bottom: 18px; }
.local-lead { font-size: 17px; line-height: 1.9; }
.data-boundary { margin-block: 28px; border-top: 1px solid var(--line); }
.data-boundary p { padding-block: 16px; border-bottom: 1px solid var(--line); display: flex; gap: 22px; font-size: 11px; }
.data-boundary span { color: var(--muted); min-width: 66px; }
.data-boundary strong { font-weight: 400; }
.subtle { color: var(--muted); font-size: 12px; line-height: 1.9; }
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; }
.steps li { border-top: 1px solid var(--line); padding-top: 24px; }
.step-number { font-size: 34px; font-family: Georgia, serif; color: var(--accent); }
.steps h3 { margin-block: 18px 12px; font-size: 18px; }
.steps p { color: var(--muted); font-size: 12px; max-width: 25em; }
.faq-section { display: grid; grid-template-columns: 1fr 1.25fr; gap: 8%; padding-top: 12px; }
.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { display: flex; justify-content: space-between; gap: 20px; align-items: center; min-height: 70px; padding-block: 16px; font-size: 13px; cursor: pointer; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary span { color: var(--muted); font-size: 21px; font-weight: 300; }
details[open] summary span { transform: rotate(45deg); }
details > p { color: var(--muted); font-size: 12px; padding-bottom: 24px; max-width: 40em; }
.closing { display: flex; align-items: center; justify-content: space-between; gap: 32px; border-top: 1px solid var(--line); padding-block: 64px 80px; }
.closing h2 { font-size: clamp(29px, 3vw, 40px); }
.closing .eyebrow { margin-bottom: 18px; }
.text-action { background: none; border: 0; min-height: 44px; padding: 0 4px; text-decoration: underline; text-underline-offset: 4px; font-size: 11px; }
.site-footer { border-top: 1px solid var(--line); padding-block: 25px; display: flex; align-items: center; gap: 28px; font-size: 10px; color: var(--muted); }
.footer-brand { color: var(--text); font-family: var(--heading-font); font-size: 22px; min-height: 44px; display: flex; align-items: center; }
.site-footer > span { margin-left: auto; }
.skip-link { position: absolute; top: 8px; left: 8px; padding: 12px; background: var(--paper); z-index: 2; transform: translateY(-160%); }
.skip-link:focus { transform: none; }
dialog { color: var(--text); background: var(--surface); border: 1px solid var(--control-line); border-radius: var(--radius); padding: 28px; width: min(460px, calc(100% - 40px)); }
dialog::backdrop { background: #08090bc9; }
.dialog-heading { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.dialog-heading .eyebrow { margin: 0; }
.dialog-close { background: none; width: 44px; height: 44px; font-size: 26px; }
dialog h2 { font-family: var(--body-font); font-size: 24px; letter-spacing: 0; }
dialog > p { color: var(--muted); font-size: 13px; margin-top: 18px; line-height: 1.9; }
.dialog-confirm { margin-top: 28px; }
.no-script { padding-block: 24px; }
@media (prefers-reduced-motion: no-preference) {
  .entrance { animation: enter 700ms var(--ease) both; }
  .work-preview.entrance { animation-delay: 100ms; }
  @keyframes enter { from { opacity: 0; translate: 0 12px; } to { opacity: 1; translate: 0 0; } }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }
@media (max-width: 1000px) {
  .wrap { width: calc(100% - 64px); }
  .site-header nav { gap: 18px; }
  .hero { gap: 5%; padding-block: 64px; }
  h1 { font-size: 43px; }
  .actions { gap: 10px; }
  .button { padding-inline: 16px; gap: 18px; }
  .preview-body { padding: 24px 16px; grid-template-columns: 30px 1fr; gap: 8px; }
  .script-paper { padding: 20px 16px; }
  .script-line { grid-template-columns: 24px 1fr; gap: 6px; }
  .preview-next { padding-inline: 16px; gap: 10px; }
  .preview-next div { gap: 6px; }
  .feature-row { grid-template-columns: 85px 1fr 1.15fr; gap: 24px; }
  .workflow-strip { font-size: 10px; }
  .workflow-strip div { gap: 10px; }
  .local-grid { gap: 7%; }
  .steps { gap: 28px; }
}
@media (max-width: 760px) {
  .wrap { width: calc(100% - 40px); }
  .site-header { flex-wrap: wrap; min-height: 108px; gap: 0 16px; padding-top: 14px; padding-bottom: 8px; }
  .brand { font-size: 21px; }
  .brand-mark { width: 32px; height: 36px; font-size: 20px; }
  .site-header nav { order: 3; width: 100%; justify-content: space-between; font-size: 11px; }
  .header-action { margin-left: auto; font-size: 11px; }
  .hero { grid-template-columns: 1fr; padding-block: 54px 44px; gap: 38px; }
  h1 { font-size: clamp(34px, 7.6vw, 48px); }
  .hero-intro { font-size: 13px; margin-top: 22px; }
  .desktop-break { display: none; }
  .actions { margin-top: 28px; }
  .button { font-size: 12px; gap: 20px; padding-inline: 16px; }
  .action-note { font-size: 10px; }
  .work-preview { transform: none; }
  .preview-body { grid-template-columns: 36px 1fr; padding: 24px 20px; gap: 12px; }
  .script-paper { padding: 22px; }
  .script-paper h2 { font-size: 29px; }
  .script-line { font-size: 10px; gap: 10px; }
  .preview-next { padding: 18px 20px; }
  .preview-next div { gap: 10px; }
  .workflow-strip { flex-direction: column; gap: 14px; padding-block: 22px; }
  .workflow-strip div { gap: 11px; justify-content: space-between; }
  .section { padding-block: 60px; }
  .section-heading { margin-bottom: 30px; }
  h2 { font-size: 31px; }
  .eyebrow { font-size: 10px; }
  .feature-row { grid-template-columns: 1fr; gap: 14px; padding-block: 28px; }
  .row-number { padding: 0; }
  h3 { font-size: 23px; }
  .feature-lead { max-width: none; margin-top: 8px; font-size: 12px; }
  .feature-detail { gap: 16px; margin-top: 4px; }
  .feature-detail p { display: grid; grid-template-columns: 126px 1fr; gap: 14px; }
  .feature-detail strong, .feature-detail span { font-size: 11px; }
  .connection-row { grid-template-columns: 1fr; row-gap: 14px; }
  .connection-row div { gap: 26px; font-size: 14px; }
  .connection-note { grid-column: 1; font-size: 10px; }
  .local-section { padding-block: 52px; }
  .local-grid { grid-template-columns: 1fr; gap: 30px; }
  .local-lead { font-size: 15px; }
  .data-boundary p { gap: 18px; font-size: 10px; }
  .subtle { font-size: 11px; }
  .steps { grid-template-columns: 1fr; gap: 22px; }
  .steps li { display: grid; grid-template-columns: 38px 1fr; column-gap: 20px; padding-top: 20px; }
  .step-number { grid-row: span 2; font-size: 28px; }
  .steps h3 { margin: 0 0 8px; font-size: 17px; }
  .steps p { max-width: none; font-size: 11px; }
  .faq-section { grid-template-columns: 1fr; gap: 28px; padding-top: 0; }
  .faq-section .eyebrow { margin-bottom: 14px; }
  summary { font-size: 12px; min-height: 64px; }
  .closing { display: block; padding-block: 46px; }
  .closing > div:last-child { margin-top: 30px; }
  .closing h2 { font-size: 29px; }
  .site-footer { flex-wrap: wrap; gap: 8px 16px; padding-block: 20px; }
  .site-footer > p { font-size: 9px; }
  .site-footer > span { width: 100%; margin-left: 0; }
}

/* Current product identity and module descriptions. */
::selection { background: #52584c; color: #fff; }
html { scrollbar-color: #686c71 var(--bg); }
.brand-logo { width: 48px; height: 48px; border-radius: 12px; object-fit: cover; }
.brand { font-size: 22px; }
.brand-sub { letter-spacing: .04em; }
.header-action { display: inline-flex; align-items: center; white-space: nowrap; }
.hero { grid-template-columns: 1.12fr 1fr; }
h1 { font-size: clamp(36px, 3.6vw, 53px); }
.current-preview { margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.current-preview > img { width: 100%; height: auto; display: block; aspect-ratio: 1200/620; object-fit: cover; }
.current-preview figcaption { padding: 26px 30px; }
.current-preview strong { font-size: 18px; font-weight: 500; }
.current-preview p { color: var(--muted); font-size: 13px; line-height: 2; margin: 12px 0 16px; }
.current-preview a { font-size: 12px; text-decoration: underline; text-underline-offset: 4px; }
.section-heading > p { margin-top: 18px; color: var(--muted); }
.module-row { display: grid; grid-template-columns: 155px 1fr 210px; align-items: start; gap: 32px; padding: 28px 0; border-top: 1px solid var(--line); }
.module-row h3 { font-size: 22px; }
.module-row p { max-width: 43em; color: var(--muted); }
.module-row > span { font-size: 12px; color: var(--muted); padding-top: 4px; }
.analysis-section { background: var(--surface); padding-block: 80px; }
.analysis-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 12%; }
.analysis-intro { max-width: 30em; margin-top: 25px; color: var(--muted); }
.analysis-list article { padding-bottom: 25px; margin-bottom: 25px; border-bottom: 1px solid var(--line); }
.analysis-list article:last-child { margin: 0; padding: 0; border: 0; }
.analysis-list h3, .agent-grid h3 { font-size: 20px; margin-bottom: 12px; }
.analysis-list p, .agent-grid p { color: var(--muted); }
.agent-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 48px; }
.agent-grid article { border-top: 1px solid var(--line); padding-top: 24px; }
.footer-brand { gap: 10px; font-family: var(--body-font); font-size: 15px; }
.footer-brand img { border-radius: 8px; }
.text-action { display: inline-flex; align-items: center; }
@media(max-width:1000px) { .module-row { grid-template-columns: 130px 1fr; gap: 20px; } .module-row > span { grid-column: 2; padding: 0; } .site-header { gap: 16px; } .brand { font-size: 20px; } .brand-sub { font-size: 9px; } .site-header nav { gap: 16px; font-size: 12px; } }
@media(max-width:760px) { .hero { grid-template-columns: 1fr; } h1 { font-size: clamp(31px, 7.2vw, 43px); } .brand-logo { width: 42px; height: 42px; } .brand { font-size: 20px; gap: 10px; } .brand-sub { font-size: 9px; } .header-action { font-size: 10px; padding-left: 0; } .module-row { grid-template-columns: 1fr; gap: 10px; padding: 24px 0; } .module-row > span { grid-column: 1; } .module-row p { font-size: 13px; } .analysis-section { padding-block: 52px; } .analysis-grid { grid-template-columns: 1fr; gap: 32px; } .analysis-intro { font-size: 13px; } .analysis-list p { font-size: 13px; } .agent-grid { grid-template-columns: 1fr; gap: 28px; } .agent-grid p { font-size: 13px; } .current-preview figcaption { padding: 22px; } .workflow-strip div { flex-wrap: wrap; justify-content: flex-start; } .steps p, details > p { font-size: 12px; } .site-footer .text-action { font-size: 11px; } }