:root {
  --navy: #202c35;
  --paper: #f6f5f1;
  --red: #a33732;
  --muted: #596970;
  --line: #d8dddb;
  --sans: "Microsoft YaHei", "PingFang SC", sans-serif;
  --display: "Bahnschrift", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body { margin: 0; color: var(--navy); background: var(--paper); font: 15px/1.9 var(--sans); }
h1,h2,h3,h4,p,figure,dl,dd { margin: 0; }
h1,h2,h3,h4 { font-family: var(--display); }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--red); }
a:focus-visible,summary:focus-visible { outline: 3px solid var(--red); outline-offset: 5px; }
.wrap { width: min(1160px, calc(100% - 80px)); margin-inline: auto; }
.skip { position: fixed; left: 20px; top: -90px; z-index: 30; background: var(--navy); color: white; padding: 12px 18px; }
.skip:focus { top: 12px; }
.topbar { min-height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-bottom: 1px solid #b6bec1; }
.brand { font: 600 27px var(--display); letter-spacing: -.03em; }
.brand span { margin-left: 9px; font: 12px var(--sans); letter-spacing: .1em; }
.back,.edition { font-size: 11px; color: var(--muted); }
.edition { font-family: var(--display); letter-spacing: .1em; }
.hero { display: grid; grid-template-columns: 1.04fr 1fr; gap: 64px; padding: 66px 0 50px; align-items: center; }
.eyebrow,.section-label { font: 600 11px/1.7 var(--display); letter-spacing: .1em; color: var(--red); }
.hero h1 { font-size: clamp(38px, 4.4vw, 58px); font-weight: 500; line-height: 1.45; letter-spacing: -.04em; margin: 20px 0 24px; }
.hero h1 span { color: var(--red); }
.hero-copy>p:not(.eyebrow) { color: var(--muted); max-width: 505px; }
.hero-copy strong { font-weight: 500; color: var(--navy); }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; margin-top: 29px; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 25px; padding: 11px 21px; background: var(--red); color: white; border: 1px solid var(--red); font-size: 13px; font-weight: 600; transition: background .18s; }
.button:hover { color: white; background: #822b27; }
.text-link { font-size: 12px; border-bottom: 1px solid #aeb8bd; padding: 7px 0; }
.hero-copy>.status-note { margin-top: 22px; font-size: 11px; }
.trade-map { background: #ebeeea; border-top: 3px solid var(--red); padding: 24px 30px 22px; }
.map-top { display: flex; justify-content: space-between; gap: 16px; color: var(--muted); font: 10px/1.5 var(--display); letter-spacing: .07em; }
.trade-map h2 { margin: 23px 0; font-size: 26px; font-weight: 500; line-height: 1.6; }
.map-path { list-style: none; padding: 0; margin: 0; }
.map-path li { display: grid; grid-template-columns: 22px 1fr auto; gap: 14px; align-items: center; padding: 17px 0; border-top: 1px solid #cdd4d0; }
.map-index { align-self: start; padding-top: 3px; font: 11px/1.8 var(--display); color: var(--red); }
.map-path h3 { font-size: 16px; font-weight: 500; }
.map-path p { font-size: 11px; color: var(--muted); }
.map-role { color: var(--muted); font-size: 10px; }
.map-role.human { color: var(--red); }
.trade-map figcaption { padding-top: 15px; border-top: 1px solid #cdd4d0; font-size: 10px; color: var(--muted); }
.brief { display: grid; grid-template-columns: 1fr 1.25fr 1fr; gap: 30px; border-top: 1px solid #b6bec1; padding: 22px 0 27px; }
.brief dt { color: var(--muted); font-size: 11px; margin-bottom: 4px; }
.brief dd { font-size: 13px; }
.section-nav { position: sticky; top: 0; z-index: 10; background: var(--navy); color: #e4e9e8; }
.section-links { display: flex; gap: 38px; overflow-x: auto; scrollbar-width: thin; }
.section-nav a { display: block; flex-shrink: 0; white-space: nowrap; padding: 17px 0; font-size: 12px; }
.section-nav a:hover { color: white; text-decoration: underline; text-underline-offset: 5px; }
.section-nav a span { color: #b5c1c9; font: 10px var(--display); margin-right: 8px; }
.section-nav a:focus-visible { outline-offset: -3px; outline-color: #efb2a4; }
.section { padding: 70px 0; border-bottom: 1px solid var(--line); }
.section-grid { display: grid; grid-template-columns: 245px 1fr; gap: 60px; }
.section-heading h2 { font-size: 26px; line-height: 1.7; font-weight: 500; letter-spacing: -.025em; margin-top: 13px; }
.section-heading>p:not(.section-label) { font-size: 12px; color: var(--muted); margin-top: 17px; max-width: 235px; }
.intro { font-size: 26px; line-height: 1.7; font-weight: 500; margin-bottom: 22px; letter-spacing: -.025em; }
.intro em { color: var(--red); font-style: normal; }
.body-copy { font-size: 14px; color: var(--muted); }
.scenarios { margin-top: 30px; border-top: 2px solid var(--navy); }
.scenarios>div { display: grid; grid-template-columns: 95px 1fr; gap: 20px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.scenarios dt { font-size: 19px; }
.scenarios dt span { display: block; font: 10px var(--display); color: var(--red); margin-bottom: 8px; }
.scenarios strong { font-size: 14px; font-weight: 500; }
.scenarios dd p { font-size: 13px; color: var(--muted); margin-top: 6px; }
.flow-section { background: #ebeeea; }
.flow-head { align-items: center; margin-bottom: 36px; }
.flow { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4,1fr); border-block: 1px solid #afbcb5; }
.flow li { padding: 27px 24px; border-right: 1px solid #c9d0cc; }
.flow li:first-child { padding-left: 0; }
.flow li:last-child { padding-right: 0; border-right: 0; }
.step { font: 29px/1 var(--display); color: var(--red); }
.flow h3 { font-size: 21px; font-weight: 500; margin: 17px 0 13px; }
.flow p { color: var(--muted); font-size: 13px; }
.flow .result { border-top: 1px solid #cdd4d0; padding-top: 14px; margin-top: 21px; font-size: 11px; color: var(--navy); }
.flow-foot { font-size: 12px; color: var(--muted); margin-top: 22px; }
.phase-label { display: inline-block; margin-top: 23px; padding-bottom: 4px; border-bottom: 1px solid var(--red); color: var(--red); font-size: 12px; }
.automation-note { margin: 0 0 29px; padding: 19px 22px; background: #ebeeea; border-left: 2px solid #819486; }
.automation-note h3 { font-size: 15px; font-weight: 500; margin-bottom: 9px; }
.automation-note p { font-size: 13px; color: var(--muted); }
.agent-list { border-top: 2px solid var(--navy); }
.agent-row { display: grid; grid-template-columns: 125px 1fr; gap: 22px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.agent-name span { font: 10px var(--display); letter-spacing: .1em; color: var(--red); }
.agent-name h3 { font-size: 18px; font-weight: 500; margin-top: 6px; }
.agent-row h4 { font-size: 15px; font-weight: 500; margin-bottom: 8px; }
.agent-row p { font-size: 13px; color: var(--muted); }
.agent-row .handoff { font-size: 12px; margin-top: 14px; padding-left: 12px; border-left: 2px solid #b3bdb6; }
.scope-note { font-size: 12px; color: var(--muted); margin-top: 24px; }
.decisions-section { background: #efeee8; }
.decisions { border-top: 2px solid var(--navy); }
.decision { display: grid; grid-template-columns: 28px 1fr; gap: 16px; padding: 25px 0; border-bottom: 1px solid var(--line); }
.decision-number { font: 13px var(--display); color: var(--red); padding-top: 8px; }
.decision h3 { font-size: 20px; font-weight: 500; margin-bottom: 12px; }
.decision p { font-size: 14px; color: var(--muted); }
.decision .reason { font-size: 12px; margin-top: 15px; color: var(--navy); }
.history { background: var(--navy); color: var(--paper); }
.history .section-label { color: #f0b2a8; }
.history .section-heading>p:not(.section-label) { color: #c4cfcf; }
.history-lede { font-size: 15px; color: #dde3e2; }
.delivery-status { display: flex; flex-wrap: wrap; gap: 10px 23px; margin-top: 23px; }
.delivery-status span { font-size: 11px; color: #d1dad5; padding-bottom: 5px; border-bottom: 1px solid #65766d; }
.history-work { display: grid; grid-template-columns: repeat(4,1fr); gap: 30px; border-top: 1px solid #536268; padding-top: 30px; margin-top: 40px; }
.history-work h3 { font-size: 17px; font-weight: 500; margin-bottom: 12px; }
.history-work p { font-size: 13px; color: #c4cfcf; }
.technical { margin-top: 34px; border-block: 1px solid #536268; }
.technical summary { display: flex; justify-content: space-between; gap: 20px; cursor: pointer; padding: 18px 0; font-size: 13px; list-style: none; }
.technical summary::-webkit-details-marker { display: none; }
.technical summary span { font-size: 18px; transition: transform .15s; }
.technical[open] summary span { transform: rotate(45deg); }
.technical-content { padding: 0 0 24px; color: #c4cfcf; font-size: 13px; max-width: 880px; }
.technical-content p+p { margin-top: 13px; }
.technical-content strong { font-weight: 500; color: white; }
.privacy-note { color: #c4cfcf; font-size: 11px; margin-top: 24px; }
.closing { padding: 49px 0; background: #e9ebe6; }
.closing .wrap { display: flex; justify-content: space-between; align-items: center; gap: 40px; }
.closing h2 { font-size: 28px; font-weight: 500; line-height: 1.6; margin-top: 13px; }
.closing p:not(.section-label) { font-size: 12px; color: var(--muted); margin-top: 12px; }
.closing-links { display: flex; flex-direction: column; align-items: center; gap: 14px; flex-shrink: 0; }
.footer { display: flex; justify-content: space-between; gap: 25px; padding-block: 25px; font-size: 11px; color: var(--muted); }
@media (max-width: 1000px) {
  .wrap { width: calc(100% - 56px); }
  .hero { gap: 32px; }
  .hero h1 { font-size: 43px; }
  .trade-map { padding-inline: 22px; }
  .map-role { display: none; }
  .map-path li { grid-template-columns: 22px 1fr; }
  .section-grid { grid-template-columns: 205px 1fr; gap: 35px; }
  .section-heading h2 { font-size: 23px; }
  .agent-row { grid-template-columns: 105px 1fr; gap: 20px; }
  .flow li { padding-inline: 18px; }
  .flow h3 { font-size: 19px; }
  .history-work { gap: 23px; }
}
@media (max-width: 760px) {
  html { scroll-padding-top: 72px; }
  .wrap { width: calc(100% - 40px); }
  .topbar { min-height: 72px; }
  .brand { font-size: 23px; }
  .brand span { font-size: 10px; margin-left: 5px; }
  .edition { display: none; }
  .hero { grid-template-columns: 1fr; padding: 40px 0 30px; gap: 30px; }
  .hero h1 { font-size: 42px; }
  .hero-copy>p:not(.eyebrow) { font-size: 14px; }
  .hero-copy>.status-note { font-size: 11px!important; }
  .trade-map { width: 100%; max-width: 550px; justify-self: center; padding: 22px 24px; }
  .trade-map h2 { font-size: 24px; margin-block: 18px; }
  .map-path li { grid-template-columns: 20px 1fr auto; gap: 12px; padding-block: 15px; }
  .map-role { display: block; font-size: 10px; }
  .brief { grid-template-columns: 1fr; gap: 14px; padding-block: 20px; }
  .brief>div { display: grid; grid-template-columns: 72px 1fr; gap: 10px; }
  .brief dd { font-size: 12px; }
  .section-links { width: 100%; padding-inline: 20px; gap: 24px; }
  .section-nav a { font-size: 12px; padding-block: 15px; }
  .section-nav a span { display: none; }
  .section { padding-block: 44px; }
  .section-grid { grid-template-columns: 1fr; gap: 25px; }
  .section-heading h2 { font-size: 25px; }
  .section-heading>p:not(.section-label) { max-width: none; }
  .intro { font-size: 23px; margin-bottom: 18px; }
  .body-copy { font-size: 14px; }
  .scenarios { margin-top: 25px; }
  .scenarios>div { grid-template-columns: 66px 1fr; gap: 18px; }
  .flow { grid-template-columns: 1fr 1fr; }
  .flow li { padding: 24px 16px!important; }
  .flow li:nth-child(even) { border-right: 0; }
  .flow li:nth-child(-n+2) { border-bottom: 1px solid #c9d0cc; }
  .flow h3 { font-size: 19px; }
  .flow .result { font-size: 10px; }
  .flow p { font-size: 12px; }
  .agent-row { grid-template-columns: 1fr; gap: 14px; padding-block: 23px; }
  .agent-name { display: flex; align-items: center; gap: 14px; }
  .agent-name h3 { margin: 0; }
  .phase-label { margin-top: 18px; }
  .decision { grid-template-columns: 23px 1fr; gap: 12px; }
  .decision h3 { font-size: 19px; }
  .history-work { grid-template-columns: 1fr; gap: 22px; margin-top: 28px; padding-top: 25px; }
  .history-work article { display: grid; grid-template-columns: 95px 1fr; gap: 18px; }
  .history-work h3 { font-size: 15px; }
  .history-lede { font-size: 14px; }
  .closing .wrap { display: block; }
  .closing h2 { font-size: 25px; }
  .closing-links { align-items: flex-start; margin-top: 24px; }
  .footer { display: block; }
  .footer p+p { margin-top: 6px; }
}
@media (max-width: 370px) {
  .wrap { width: calc(100% - 32px); }
  .hero h1 { font-size: 37px; }
  .actions { gap: 15px; }
  .button { padding-inline: 16px; gap: 16px; }
  .trade-map { padding-inline: 18px; }
  .map-role { display: none; }
  .map-path li { grid-template-columns: 20px 1fr; }
  .section-links { width: 100%; padding-inline: 16px; }
  .flow li { padding-inline: 12px!important; }
  .flow h3 { font-size: 17px; }
  .history-work article { grid-template-columns: 80px 1fr; gap: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none!important; }
}