:root {
  --bg: #f5f8fa;
  --paper: #ffffff;
  --ink: #203b4d;
  --muted: #536c7d;
  --accent: #285f80;
  --teal: #376e6c;
  --soft: #eaf1f6;
  --line: #dbe5ec;
  --display: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  --body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 106px; }
body { margin: 0; color: var(--ink); background: var(--bg); font: 15px/1.75 var(--body); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
a, button, summary { touch-action: manipulation; }
button, input { border-radius: 0; }
a:hover { color: var(--accent); }
a:focus-visible, button:focus-visible, summary:focus-visible, [tabindex="0"]:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; border-radius: 5px; }
main:focus { outline: none; }
::selection { background: #cfe1ec; color: var(--ink); }
p, h1, h2, h3 { margin: 0; }
h1, h2, h3 { text-wrap: balance; }
img { display: block; max-width: 100%; height: auto; }
svg { flex: none; }
.svg-defs { position: absolute; width: 0; height: 0; overflow: hidden; }
.icon { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; vertical-align: middle; }
.wrap { width: min(1224px, calc(100% - 96px)); margin-inline: auto; }
.skip-link { position: fixed; top: -100px; left: 18px; z-index: 100; background: var(--paper); padding: 12px 18px; }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 20; background: #f5f8faf5; border-bottom: 1px solid var(--line); backdrop-filter: blur(14px); }
.header-inner { display: flex; align-items: center; gap: 40px; min-height: 86px; }
.brand { display: inline-flex; align-items: center; gap: 11px; flex: none; }
.brand > span { font-size: 19px; font-weight: 680; line-height: 1.15; letter-spacing: -.6px; }
.brand small { display: block; font-size: 9px; font-weight: 400; letter-spacing: 1.7px; color: var(--muted); margin-top: 6px; }
.desktop-nav { display: flex; align-items: center; gap: 30px; margin-left: auto; }
.desktop-nav a { display: flex; align-items: center; min-height: 44px; font-size: 12px; }
.header-menus { display: flex; align-items: center; position: relative; }
.entry-menu { position: relative; font-size: 12px; }
[data-menu] summary { list-style: none; cursor: pointer; }
[data-menu] summary::-webkit-details-marker { display: none; }
.entry-menu > summary { display: flex; align-items: center; gap: 10px; min-height: 42px; border: 1px solid #c6d7e1; border-radius: 7px; padding: 7px 13px; background: #ffffff70; }
.entry-menu > summary .icon { width: 15px; height: 15px; }
[data-menu][open] > summary { color: var(--accent); border-color: var(--accent); }
.menu-panel { position: absolute; right: 0; top: calc(100% + 13px); width: 260px; max-height: calc(100vh - 104px); max-height: calc(100dvh - 104px); overflow-y: auto; overscroll-behavior: contain; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 8px; box-shadow: 0 16px 40px #203b4d14; }
.menu-panel a { display: block; border-radius: 7px; padding: 11px 12px; min-height: 44px; }
.menu-panel a:hover { background: var(--soft); }
.menu-panel small { display: block; color: var(--muted); font-size: 10px; margin-top: 2px; }
.mobile-menu { display: none; }

.hero { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; padding-block: 74px 76px; }
.hero-copy { min-width: 0; }
.eyebrow { display: flex; align-items: center; gap: 10px; font-size: 11px; font-weight: 500; letter-spacing: 1.3px; color: var(--accent); margin-bottom: 17px; }
.eyebrow-line { width: 24px; height: 1px; background: var(--accent); }
h1 { font-family: var(--display); font-size: clamp(44px, 4.6vw, 66px); font-weight: 500; line-height: 1.27; letter-spacing: -1.5px; }
.hero-description { color: var(--muted); max-width: 450px; font-size: 15px; line-height: 2; margin-top: 27px; }
.hero-actions { display: flex; align-items: center; gap: 25px; flex-wrap: wrap; margin-top: 29px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 20px; padding: 12px 18px; min-height: 47px; border-radius: 7px; font-size: 12px; }
.button.primary { background: var(--accent); color: #fff; }
.button.primary:hover { background: #204c67; }
.button .icon { width: 17px; height: 17px; }
.text-link { display: inline-flex; align-items: center; gap: 14px; min-height: 44px; color: var(--accent); font-size: 12px; }
.text-link .icon { width: 17px; height: 17px; }
.text-link:hover, .row-link:hover { text-decoration: underline; text-underline-offset: 5px; }
.hero-methods { display: flex; flex-wrap: wrap; gap: 0 17px; margin-top: 36px; color: var(--muted); font-size: 10px; }
.hero-methods span + span { position: relative; }
.hero-methods span + span::before { content: ""; position: absolute; width: 2px; height: 2px; border-radius: 50%; background: #9aafb9; left: -9px; top: 8px; }
.scenario-lab { border: 1px solid #cfdee7; border-radius: 16px; padding: 21px 25px 17px; background: var(--paper); min-width: 0; box-shadow: 0 18px 50px #2e516208; }
.lab-heading { display: flex; align-items: center; gap: 9px; color: var(--muted); font-size: 10px; margin-bottom: 17px; }
.lab-heading > small { margin-left: auto; font-size: 9px; white-space: nowrap; color: var(--muted); }
.lab-mark { display: flex; align-items: end; gap: 2px; height: 13px; width: 16px; }
.lab-mark span { width: 3px; height: 8px; border-radius: 1px; background: #89adb9; }
.lab-mark span:nth-child(2) { height: 13px; background: var(--accent); }
.lab-mark span:nth-child(3) { height: 10px; background: #5d8a9e; }
.scene-tabs { display: flex; gap: 3px; padding: 4px; border-radius: 8px; background: var(--soft); }
.scene-tabs button { flex: 1; min-height: 40px; border: 0; border-radius: 5px; background: transparent; color: var(--muted); font-size: 12px; }
.scene-tabs button[aria-selected="true"] { background: var(--paper); color: var(--accent); box-shadow: 0 1px 5px #2b526412; font-weight: 550; }
.scene-tabs button:focus-visible { outline-offset: 1px; }
.scene-panel[hidden] { display: none; }
.scene-question { margin: 21px 0 19px; }
.scene-question > small { display: block; color: var(--muted); font-size: 10px; margin-bottom: 5px; }
.scene-question h2 { font-size: 20px; font-weight: 560; letter-spacing: -.4px; line-height: 1.5; }
.scene-flow { list-style: none; padding: 0; margin: 0; }
.scene-flow li { display: grid; grid-template-columns: 34px 1fr auto; align-items: start; gap: 12px; position: relative; padding-bottom: 19px; min-height: 67px; }
.scene-flow li:not(:last-child)::before { content: ""; position: absolute; width: 1px; background: #d3e2ea; top: 34px; bottom: 0; left: 16.5px; }
.step-icon { display: flex; align-items: center; justify-content: center; width: 34px; height: 34px; border-radius: 9px; color: var(--accent); background: #edf3f7; }
.step-icon .icon { width: 17px; height: 17px; }
.step-icon.human { background: #eaf1ee; color: var(--teal); }
.scene-flow strong { display: block; font-size: 13px; font-weight: 550; line-height: 1.5; padding-top: 1px; }
.scene-flow p { font-size: 11px; color: var(--muted); margin-top: 3px; }
.method-tag { align-self: start; color: #586f7f; background: #f1f5f8; font-size: 10px; border-radius: 4px; padding: 3px 7px; margin-top: 5px; white-space: nowrap; }
.method-tag.ai { color: var(--teal); background: #edf4f1; }
.scene-result { display: flex; flex-direction: column; gap: 3px; border-top: 1px solid var(--line); padding-top: 14px; }
.scene-result > span { font-size: 9px; color: var(--muted); }
.scene-result strong { font-size: 13px; font-weight: 550; color: var(--accent); }
.lab-caption { font-size: 10px; color: var(--muted); margin-top: 13px; }

.section { padding-block: 62px 66px; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; margin-bottom: 32px; }
.section-heading .eyebrow { margin-bottom: 11px; }
.section-heading h2 { font-size: 30px; font-family: var(--display); font-weight: 500; line-height: 1.4; letter-spacing: -.5px; }
.section-heading > p { color: var(--muted); font-size: 12px; line-height: 1.9; padding-bottom: 2px; flex: none; }
.solutions-section { border-top: 1px solid var(--line); }
.solution-row { display: grid; grid-template-columns: 44px 300px 1fr 140px; gap: 24px; align-items: center; padding: 27px 0; border-top: 1px solid var(--line); }
.solution-icon { display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 12px; background: #e9f0f5; color: var(--accent); }
.solution-icon .icon { width: 22px; height: 22px; }
.solution-title > span { display: block; color: var(--muted); font-size: 11px; margin-bottom: 6px; }
.solution-title h3 { font-size: 17px; font-weight: 550; line-height: 1.6; }
.solution-row > p { color: var(--muted); font-size: 13px; line-height: 1.9; max-width: 490px; }
.row-link { display: inline-flex; align-items: center; justify-content: flex-end; gap: 10px; min-height: 44px; color: var(--accent); font-size: 12px; white-space: nowrap; }
.row-link .icon { width: 16px; height: 16px; }
.section-footnote { border-top: 1px solid var(--line); padding-top: 19px; color: var(--muted); font-size: 12px; }
.featured-case { display: grid; grid-template-columns: 1fr 1fr; overflow: hidden; border: 1px solid var(--line); border-radius: 17px; background: var(--paper); }
.case-copy { padding: 36px 38px; }
.case-labels { display: flex; align-items: center; gap: 12px; font-size: 10px; color: var(--accent); margin-bottom: 21px; }
.status-label { border: 1px solid #d8e2e8; border-radius: 4px; padding: 1px 7px; color: var(--muted); font-size: 9px; }
.case-copy h3, .case-card h3 { font-family: var(--display); font-size: 29px; font-weight: 500; line-height: 1.55; letter-spacing: -.5px; }
.case-name { margin-top: 17px; font-size: 12px; font-weight: 550; color: var(--accent); }
.case-description { font-size: 13px; line-height: 2; color: var(--muted); margin-top: 10px; max-width: 465px; }
.case-audience { font-size: 11px; line-height: 1.9; border-top: 1px solid var(--line); margin-top: 22px; padding-top: 16px; color: var(--muted); }
.case-audience > span { display: block; color: var(--ink); font-size: 10px; margin-bottom: 4px; }
.case-copy > .text-link { margin-top: 12px; }
.product-visual { align-self: stretch; background: #edf3f6; padding: 28px 38px 21px; }
.visual-caption { display: flex; justify-content: space-between; align-items: center; gap: 10px; font-size: 11px; border-bottom: 1px solid #d3e0e7; padding-bottom: 16px; }
.visual-caption small { font-size: 9px; color: var(--muted); }
.product-flow { margin: 24px 0 0; padding: 0; list-style: none; }
.product-flow li { position: relative; display: grid; grid-template-columns: 71px 1fr; gap: 21px; padding-bottom: 23px; }
.product-flow li:not(:last-child)::before { content: ""; position: absolute; width: 1px; background: #c8dbe4; left: 35px; top: 29px; bottom: 0; }
.product-flow li > span { z-index: 1; padding: 5px 0; align-self: start; font-size: 10px; background: #f9fcfd; border: 1px solid #d1e0e8; border-radius: 5px; text-align: center; color: var(--accent); }
.product-flow li:last-child > span { color: var(--teal); border-color: #cbdfd8; background: #edf6f1; }
.product-flow strong { display: block; font-size: 15px; font-weight: 550; }
.product-flow p { font-size: 10px; color: var(--muted); margin-top: 3px; }
.visual-footer { display: flex; align-items: center; gap: 8px; border-top: 1px solid #d3e0e7; padding-top: 14px; color: var(--muted); font-size: 10px; }
.visual-footer .icon { width: 15px; height: 15px; }
.case-details { border-top: 1px solid var(--line); margin-top: 20px; scroll-margin-top: 110px; }
.case-details > summary { list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 14px; min-height: 54px; color: var(--accent); font-size: 12px; cursor: pointer; }
.case-details > summary::-webkit-details-marker { display: none; }
.case-details > summary > span { font-size: 18px; font-weight: 300; transition: transform .15s; }
.case-details[open] > summary > span { transform: rotate(45deg); }
.details-content { padding: 2px 0 17px; }
.details-content > p { color: var(--muted); font-size: 12px; line-height: 1.95; margin: 10px 0; }
.details-content strong { display: block; font-size: 11px; color: var(--ink); font-weight: 550; margin-bottom: 3px; }
.featured-details { grid-column: 1/-1; padding-inline: 38px; margin-top: 0; }
.featured-details .details-content { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 25px; }
.case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 22px; align-items: start; }
.case-card { min-width: 0; padding: 30px 34px 4px; border: 1px solid var(--line); border-radius: 15px; background: var(--paper); }
.case-card h3 { font-size: 26px; }
.case-card .case-labels { margin-bottom: 17px; }
.compact-flow { display: flex; align-items: center; gap: 12px; border-radius: 8px; background: #f0f5f8; padding: 19px 16px; margin-top: 25px; }
.compact-flow > span { flex: 1; text-align: center; font-size: 11px; }
.compact-flow > span:last-child { color: var(--teal); }
.compact-flow .icon { width: 16px; height: 16px; color: #6f8a9b; }
.figure-note { color: var(--muted); font-size: 10px; margin-top: 10px; }

.approach-band { margin-top: 16px; background: #eaf1f5; border-block: 1px solid #dce7ed; }
.approach-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 42px; margin: 38px 0 0; padding: 0; list-style: none; }
.approach-steps > li { min-width: 0; position: relative; }
.step-number { display: inline-flex; width: 31px; height: 31px; align-items: center; justify-content: center; font-size: 10px; color: var(--accent); border: 1px solid #c5d7e1; background: #f6fafc; border-radius: 50%; position: relative; z-index: 1; }
.approach-steps > li:not(:last-child)::before { content: ""; position: absolute; height: 1px; background: #ccdce5; top: 15px; left: 31px; right: -42px; }
.approach-steps h3 { font-size: 16px; font-weight: 550; margin-top: 18px; }
.approach-steps p { font-size: 12px; color: var(--muted); line-height: 1.9; margin-top: 9px; max-width: 230px; }
.tools-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; }
.tool-card { min-width: 0; border-top: 1px solid var(--line); padding-top: 24px; }
.tool-label { font-size: 11px; color: var(--accent); }
.tool-copy h3 { font-size: 19px; font-weight: 550; letter-spacing: -.4px; margin-top: 6px; }
.tool-copy > p { font-size: 12px; color: var(--muted); margin: 10px 0 7px; max-width: 480px; }
.tool-copy > small { font-size: 9px; color: var(--muted); margin-left: 14px; }
.tool-image { overflow: hidden; height: 249px; border: 1px solid var(--line); border-radius: 11px; margin-top: 15px; background: #f6f6f8; }
.tool-image img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.task-example { height: 249px; border: 1px solid var(--line); border-radius: 11px; padding: 20px 24px; margin-top: 15px; background: var(--paper); font-size: 11px; }
.task-example-title { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.progress-ring { width: 31px; height: 31px; border: 1px solid #89a8bc; border-radius: 50%; background: conic-gradient(var(--accent) 0 33%, transparent 33%); flex: none; }
.task-example-title strong { display: block; font-size: 12px; font-weight: 550; }
.task-example-title div > span { color: var(--muted); font-size: 10px; }
.example-label { margin-left: auto; color: var(--muted); font-size: 9px; white-space: nowrap; }
.task-line { display: flex; align-items: center; gap: 10px; min-height: 34px; border-bottom: 1px solid #e9eff3; }
.task-line > span:last-child:not(.check-box) { margin-left: auto; color: var(--muted); font-size: 9px; }
.check-box { width: 12px; height: 12px; border: 1px solid #a3bac8; border-radius: 3px; flex: none; }
.check-box.checked { display: flex; align-items: center; justify-content: center; border-color: var(--accent); background: var(--accent); color: #fff; font-size: 10px; }
.task-child { padding-left: 22px; color: var(--muted); }
.task-template { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 9px; margin-top: 16px; }
.task-template .icon { width: 14px; height: 14px; }

.contact-section { display: grid; grid-template-columns: 1fr .8fr; gap: 90px; align-items: center; border-top: 1px solid var(--line); margin-top: 6px; padding-block: 65px 76px; }
.contact-copy h2 { font-family: var(--display); font-size: 40px; font-weight: 500; line-height: 1.4; letter-spacing: -.7px; }
.contact-copy > p:not(.eyebrow) { color: var(--muted); font-size: 13px; line-height: 1.95; margin-top: 18px; }
.contact-prompts { display: flex; flex-wrap: wrap; gap: 15px; color: var(--muted); font-size: 10px; margin-top: 20px; }
.contact-prompts span { border-bottom: 1px solid #b9cbd6; padding-bottom: 3px; }
.contact-options { background: #eaf1f6; border-radius: 14px; padding: 24px 28px 17px; }
.contact-email { display: flex; align-items: center; gap: 16px; min-height: 72px; border-bottom: 1px solid #d0dee7; padding-bottom: 20px; }
.contact-email > .icon { width: 23px; height: 23px; color: var(--accent); }
.contact-email > .icon:last-child { margin-left: auto; width: 17px; height: 17px; }
.contact-options small { display: block; color: var(--muted); font-size: 10px; }
.contact-options strong { display: block; font-size: 18px; line-height: 1.5; font-weight: 500; margin-top: 3px; letter-spacing: -.3px; }
.contact-wechat { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding-top: 20px; }
.contact-wechat strong { user-select: all; }
.copy-wechat { display: inline-flex; align-items: center; gap: 8px; border: 1px solid #c3d4df; background: #f9fcfd; border-radius: 6px; padding: 7px 11px; min-height: 44px; font-size: 11px; }
.copy-wechat:hover { border-color: var(--accent); }
.copy-wechat .icon { width: 14px; height: 14px; }
.copy-status { min-height: 32px; font-size: 10px; color: var(--muted); padding-top: 15px; }
.site-footer { border-top: 1px solid var(--line); background: #f0f4f7; padding-block: 29px 24px; }
.footer-top { display: flex; align-items: center; gap: 28px; }
.footer-brand { font-size: 15px; font-weight: 650; letter-spacing: -.5px; white-space: nowrap; }
.footer-brand span { font-size: 10px; font-weight: 400; color: var(--muted); border-left: 1px solid #bacdd8; padding-left: 10px; margin-left: 8px; letter-spacing: 1px; }
.footer-top > p { color: var(--muted); font-size: 10px; }
.back-top { margin-left: auto; display: inline-flex; align-items: center; min-height: 44px; color: var(--muted); font-size: 10px; white-space: nowrap; }
.footer-bottom { display: flex; justify-content: space-between; gap: 18px; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 9px; color: var(--muted); }
.footer-bottom > div { display: flex; gap: 19px; flex-wrap: wrap; }

/* Focused solutions and secondary project pages. */
.focus-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 42px; }
.focus-solution { border-top: 2px solid #9db8c8; padding: 28px 0 14px; }
.focus-solution:last-child { border-color: #9bbab6; }
.focus-solution h3 { font: 500 28px/1.5 var(--display); margin-top: 18px; }
.focus-solution > p { color: var(--muted); font-size: 13px; max-width: 470px; margin-top: 12px; }
.services-grid { row-gap: 24px; }
.services-grid .focus-solution:nth-child(even) { border-color: #9bbab6; }
.focus-solution > .service-problem { color: var(--ink); font-size: 14px; font-weight: 550; margin-top: 12px; }
.services-grid .focus-solution > .service-problem + p { margin-top: 8px; }
.scenarios-section { border-top: 1px solid var(--line); }
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.scenario-card { display: flex; flex-direction: column; padding: 24px; border: 1px solid var(--line); border-radius: 12px; background: #ffffffa8; }
.scenario-role { color: var(--accent); font-size: 11px; margin-bottom: 13px; }
.scenario-card h3 { font-size: 17px; font-weight: 550; line-height: 1.6; }
.scenario-card > h3 + p { color: var(--muted); font-size: 12px; line-height: 1.9; margin-block: 10px 12px; }
.scenario-card > .text-link { margin-top: auto; align-self: start; }
.scenario-invitation { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 16px; color: var(--muted); font-size: 12px; margin-top: 16px; }
.scenario-invitation .text-link { font-size: 12px; }
.focus-solution ul { padding: 0; margin: 21px 0 12px; list-style: none; font-size: 12px; color: var(--muted); }
.focus-solution li { padding: 8px 0 8px 18px; border-bottom: 1px solid var(--line); position: relative; }
.focus-solution li::before { content: ""; width: 5px; height: 5px; border: 1px solid #7295a8; position: absolute; top: 16px; left: 0; }
.tool-principle { margin-top: 20px; border-left: 2px solid #9db8c8; padding: 14px 22px; background: #edf3f6; color: var(--muted); font-size: 12px; line-height: 1.95; }
.tool-principle strong { color: var(--ink); font-weight: 550; }
.featured-case + .featured-case, .knowledge-case, .knowledge-case + .featured-case { margin-top: 24px; }
.status-live { color: var(--teal); background: #edf4f1; border-color: #c6dcd5; }
.work-visual { padding: 28px 38px 21px; background: #edf3f4; }
.work-thread { padding-top: 22px; }
.thread-label { color: var(--muted); font-size: 10px; }
.work-thread h4 { font-size: 17px; font-weight: 550; margin: 3px 0 20px; }
.role-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.role-pair > div { padding: 15px; background: #f9fcfd; border: 1px solid #d1e0e5; border-top: 2px solid #85a9b8; border-radius: 6px; }
.role-pair > div:last-child { border-top-color: #8eaea6; }
.role-pair span, .report-result > span { color: var(--muted); display: block; font-size: 10px; }
.role-pair strong { display: block; font-weight: 550; font-size: 12px; margin-top: 5px; }
.role-pair p, .report-result p { font-size: 10px; color: var(--muted); margin-top: 4px; }
.thread-join { display: flex; gap: 8px; align-items: center; justify-content: center; margin-block: 14px; font-size: 10px; color: var(--muted); }
.thread-join .icon { width: 15px; height: 15px; }
.report-result { border: 1px solid #cbdcd8; padding: 14px 17px; background: #f5faf7; border-radius: 6px; }
.report-result strong { display: block; font-size: 13px; font-weight: 550; margin-top: 3px; color: var(--teal); }
.work-visual .visual-footer { margin-top: 22px; }
.knowledge-case { display: grid; grid-template-columns: 1fr 1fr; column-gap: 60px; padding: 32px 38px 4px; }
.knowledge-case > * { grid-column: 1; }
.knowledge-case .compact-flow { grid-column: 2; grid-row: 1 / 5; align-self: center; margin-top: 0; padding-block: 32px; }
.knowledge-case > .figure-note { grid-column: 2; grid-row: 5; margin-top: 0; }
.knowledge-case > .case-details { grid-column: 1 / -1; }
.knowledge-case .details-content { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 25px; }
.knowledge-case .details-content .text-link { grid-column: 1 / -1; }
.secondary-links { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 35px; padding-block: 35px; align-items: center; }
.secondary-links .eyebrow { margin-bottom: 6px; }
.secondary-links p, .secondary-links small { font-size: 11px; color: var(--muted); }
.secondary-links > a { display: flex; justify-content: space-between; align-items: center; gap: 16px; min-height: 62px; padding: 8px 0; font-size: 14px; border-bottom: 1px solid var(--line); }
.secondary-links > a:hover { color: var(--accent); border-color: var(--accent); }
.secondary-links small { display: block; margin-top: 3px; }
.secondary-links .icon { width: 18px; height: 18px; flex: none; }
.subpage-intro { padding-block: 36px 10px; }
.subpage-intro > .text-link { margin-bottom: 22px; }
.subpage-intro .eyebrow { margin-bottom: 14px; }
.subpage-intro h1 { font-size: clamp(34px, 4vw, 54px); }
.subpage-intro > p:not(.eyebrow) { color: var(--muted); margin-top: 20px; font-size: 14px; }
.subpage-nav { display: flex; gap: 28px; margin-top: 20px; color: var(--accent); font-size: 12px; }
.subpage-nav a { min-height: 44px; display: inline-flex; align-items: center; }
.tool-copy h2 { font-size: 19px; font-weight: 550; letter-spacing: -.4px; margin-top: 6px; }
.research-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; padding-block: 32px 70px; align-items: start; }
.research-case h2 { font: 500 28px/1.5 var(--display); }
.research-notes { padding-top: 12px; }
.research-steps { padding: 0 0 0 20px; color: var(--accent); }
.research-steps li { padding: 0 0 22px 10px; }
.research-steps h3 { font-size: 15px; font-weight: 550; color: var(--ink); }
.research-steps p { color: var(--muted); font-size: 13px; margin-top: 6px; }

@media (max-width: 900px) {
  .focus-grid { gap: 30px; }
  .scenario-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .scenario-card { padding: 22px; }
  .focus-solution h3 { font-size: 25px; }
  .work-visual { padding-inline: 22px; }
  .role-pair { gap: 9px; }
  .role-pair > div { padding: 12px; }
  .knowledge-case { padding-inline: 25px; column-gap: 30px; }
  .secondary-links { gap: 24px; }
  .research-layout { gap: 30px; }
}
@media (max-width: 600px) {
  .focus-grid { grid-template-columns: 1fr; gap: 15px; }
  .scenario-grid { grid-template-columns: 1fr; gap: 14px; }
  .scenario-card { padding: 20px 23px; }
  .scenario-card h3 { font-size: 16px; }
  .scenario-role { margin-bottom: 8px; }
  .focus-solution > .service-problem { font-size: 13px; }
  .focus-solution { padding-top: 22px; }
  .focus-solution h3 { font-size: 25px; margin-top: 14px; }
  .focus-solution > p { font-size: 12px; }
  .tool-principle { margin-top: 12px; padding: 13px 17px; font-size: 11px; }
  .work-visual { padding: 23px; }
  .work-thread h4 { font-size: 16px; }
  .role-pair strong { font-size: 11px; }
  .role-pair p { font-size: 9px; }
  .knowledge-case { display: block; }
  .knowledge-case .compact-flow { margin-top: 20px; padding-block: 20px; }
  .knowledge-case > .figure-note { margin-top: 10px; }
  .knowledge-case .details-content { display: block; }
  .secondary-links { grid-template-columns: 1fr; gap: 10px; padding-block: 28px; }
  .secondary-links > div { margin-bottom: 4px; }
  .secondary-links > a { font-size: 13px; }
  .subpage-intro { padding-top: 20px; }
  .subpage-intro > p:not(.eyebrow) { font-size: 13px; }
  .subpage-intro > p br { display: none; }
  .tool-copy h2 { font-size: 18px; }
  .research-layout { grid-template-columns: 1fr; gap: 22px; padding-bottom: 38px; }
  .research-case h2 { font-size: 25px; }
}

@media (max-width: 800px) {
  .desktop-nav { display: none; }
  .header-inner { justify-content: space-between; }
  .header-menus { gap: 8px; }
  .entry-menu .menu-panel { right: -44px; }
  .mobile-menu { display: block; }
  .mobile-menu > summary { display: flex; flex-direction: column; justify-content: center; gap: 5px; width: 40px; height: 44px; border: 1px solid transparent; border-radius: 5px; padding: 11px; }
  .mobile-menu > summary span { height: 1px; width: 16px; background: var(--ink); }
  .mobile-menu .menu-panel { font-size: 12px; }
}

@media (max-width: 1150px) {
  .wrap { width: calc(100% - 72px); }
  .hero { gap: 36px; padding-block: 60px; }
  .hero h1 { font-size: 50px; }
  .scenario-lab { padding-inline: 21px; }
  .hero-description { font-size: 14px; }
  .solution-row { grid-template-columns: 42px 245px 1fr 128px; gap: 19px; }
  .solution-title h3 { font-size: 16px; }
  .solution-row > p { font-size: 12px; }
  .case-copy, .case-card { padding-inline: 28px; }
  .product-visual { padding-inline: 28px; }
  .contact-section { gap: 55px; }
}

@media (max-width: 900px) {
  .wrap { width: calc(100% - 64px); }
  .header-inner { min-height: 76px; gap: 24px; }
  .desktop-nav { gap: 20px; }
  .desktop-nav a { font-size: 11px; }
  .hero { grid-template-columns: 1fr; gap: 40px; padding-block: 54px; }
  .hero-copy { max-width: 650px; }
  .hero h1 { font-size: 58px; }
  .hero-description { max-width: 590px; font-size: 15px; }
  .hero-methods { margin-top: 23px; }
  .scenario-lab { width: 100%; max-width: 680px; justify-self: center; padding: 23px 28px 20px; }
  .scene-flow { display: grid; grid-template-columns: 1fr 1fr; column-gap: 28px; }
  .scene-flow li { min-height: 82px; }
  .scene-flow li::before { display: none; }
  .method-tag { position: absolute; left: 46px; top: 43px; font-size: 9px; margin: 0; padding: 1px 5px; }
  .scene-question h2 { font-size: 23px; }
  .scene-question { margin-bottom: 23px; }
  .scene-result { padding-top: 12px; }
  .scene-tabs button { min-height: 44px; }
  .section { padding-block: 46px 50px; }
  .section-heading h2 { font-size: 28px; }
  .section-heading > p { font-size: 11px; }
  .solution-row { grid-template-columns: 44px 1fr auto; gap: 8px 20px; padding-block: 23px; }
  .solution-icon { grid-row: 1/3; }
  .solution-title { grid-column: 2; }
  .solution-title h3 { font-size: 16px; }
  .solution-row > p { grid-column: 2/4; grid-row: 2; max-width: 580px; font-size: 12px; }
  .solution-row > .row-link { grid-column: 3; grid-row: 1; }
  .case-copy h3 { font-size: 27px; }
  .case-copy { padding: 28px 25px; }
  .product-visual { padding: 25px 22px; }
  .product-flow { margin-top: 26px; }
  .product-flow li { grid-template-columns: 61px 1fr; gap: 14px; padding-bottom: 24px; }
  .product-flow li:not(:last-child)::before { left: 30px; }
  .product-flow p { max-width: 160px; line-height: 1.9; }
  .case-card { padding: 26px 25px 4px; }
  .case-card h3 { font-size: 24px; }
  .case-grid { gap: 18px; margin-top: 18px; }
  .compact-flow { gap: 6px; padding: 17px 10px; }
  .compact-flow > span { font-size: 10px; }
  .compact-flow .icon { width: 13px; height: 13px; }
  .featured-details { padding-inline: 25px; }
  .approach-steps { gap: 25px; }
  .approach-steps > li:not(:last-child)::before { right: -25px; }
  .approach-steps h3 { font-size: 14px; }
  .approach-steps p { font-size: 11px; }
  .tools-grid { gap: 25px; }
  .tool-copy h3 { font-size: 17px; }
  .task-example { padding-inline: 18px; }
  .task-example-title { gap: 9px; }
  .example-label { display: none; }
  .contact-section { grid-template-columns: 1fr .95fr; gap: 34px; padding-block: 50px 60px; }
  .contact-copy h2 { font-size: 34px; }
  .contact-options { padding-inline: 20px; }
  .contact-options strong { font-size: 16px; }
  .contact-email { gap: 12px; }
  .desktop-break { display: none; }
  .footer-top { flex-wrap: wrap; gap: 10px 20px; }
  .footer-bottom { flex-wrap: wrap; gap: 8px; }
}

@media (max-width: 600px) {
  html { scroll-padding-top: 90px; }
  .wrap { width: calc(100% - 40px); }
  .header-inner { min-height: 70px; gap: 12px; justify-content: space-between; }
  .brand { gap: 8px; }
  .brand img { width: 30px; height: 30px; }
  .brand > span { font-size: 17px; }
  .brand small { font-size: 8px; letter-spacing: .8px; margin-top: 4px; }
  .desktop-nav { display: none; }
  .header-menus { gap: 8px; }
  .entry-menu { font-size: 10px; }
  .entry-menu > summary { padding-inline: 10px; gap: 6px; min-height: 44px; }
  .entry-menu > summary .icon { width: 13px; height: 13px; }
  .entry-menu .menu-panel { right: -44px; }
  .mobile-menu { display: block; }
  .mobile-menu > summary { display: flex; flex-direction: column; justify-content: center; gap: 5px; width: 40px; height: 44px; border: 1px solid transparent; border-radius: 5px; padding: 11px; }
  .mobile-menu > summary span { height: 1px; width: 16px; background: var(--ink); }
  .mobile-menu .menu-panel { font-size: 12px; }
  .hero { gap: 34px; padding-block: 42px 43px; }
  .eyebrow { font-size: 10px; margin-bottom: 17px; }
  .hero h1 { font-size: clamp(35px, 9.8vw, 46px); line-height: 1.3; letter-spacing: -1px; }
  .hero-description { font-size: 13px; line-height: 1.95; margin-top: 22px; }
  .hero-actions { gap: 17px; margin-top: 23px; }
  .button { gap: 15px; padding-inline: 14px; font-size: 11px; min-height: 44px; }
  .hero-actions > .text-link { gap: 10px; font-size: 11px; }
  .hero-methods { font-size: 9px; gap: 0 16px; margin-top: 23px; }
  .scenario-lab { padding: 18px 18px 15px; border-radius: 13px; }
  .lab-heading { gap: 7px; margin-bottom: 15px; font-size: 9px; }
  .lab-heading > small { font-size: 8px; }
  .lab-mark { display: none; }
  .scene-tabs button { min-height: 44px; font-size: 11px; }
  .scene-question { margin-top: 20px; margin-bottom: 20px; }
  .scene-question h2 { font-size: 19px; letter-spacing: -.3px; }
  .scene-flow { display: block; }
  .scene-flow li { grid-template-columns: 30px 1fr auto; gap: 10px; padding-bottom: 20px; min-height: 67px; }
  .scene-flow li:not(:last-child)::before { display: block; top: 30px; left: 14.5px; }
  .step-icon { width: 30px; height: 30px; border-radius: 8px; }
  .step-icon .icon { width: 16px; height: 16px; }
  .scene-flow strong { font-size: 13px; }
  .scene-flow p { font-size: 10px; }
  .method-tag { position: static; margin-top: 3px; padding: 3px 5px; font-size: 9px; }
  .scene-result strong { font-size: 12px; }
  .lab-caption { font-size: 9px; margin-top: 11px; }
  .section { padding-block: 36px 40px; }
  .section-heading { display: block; margin-bottom: 24px; }
  .section-heading .eyebrow { margin-bottom: 10px; }
  .section-heading h2 { font-size: 25px; line-height: 1.5; }
  .section-heading > p { font-size: 11px; margin-top: 12px; }
  .section-heading > p br { display: none; }
  .solution-row { grid-template-columns: 34px 1fr; gap: 8px 13px; padding-block: 21px; align-items: start; }
  .solution-icon { width: 34px; height: 34px; border-radius: 9px; margin-top: 3px; }
  .solution-icon .icon { width: 18px; height: 18px; }
  .solution-title > span { font-size: 10px; margin-bottom: 4px; }
  .solution-title h3 { font-size: 15px; }
  .solution-row > p { grid-column: 2; grid-row: 2; font-size: 12px; }
  .solution-row > .row-link { grid-column: 2; grid-row: 3; justify-content: start; min-height: 44px; font-size: 11px; margin-top: 1px; }
  .section-footnote { font-size: 11px; line-height: 1.9; }
  .featured-case { display: block; border-radius: 13px; }
  .case-copy { padding: 25px 23px; }
  .case-copy h3 { font-size: 27px; }
  .case-labels { margin-bottom: 17px; }
  .case-name { font-size: 11px; margin-top: 13px; }
  .case-description { font-size: 12px; }
  .case-audience { margin-top: 18px; font-size: 10px; }
  .case-copy > .text-link { font-size: 11px; margin-top: 8px; }
  .product-visual { padding: 22px 23px; }
  .visual-caption { font-size: 10px; }
  .product-flow li { grid-template-columns: 65px 1fr; gap: 17px; }
  .product-flow li:not(:last-child)::before { left: 32px; }
  .product-flow p { max-width: none; font-size: 9px; }
  .product-flow strong { font-size: 14px; }
  .product-flow li > span { font-size: 9px; }
  .visual-footer { font-size: 9px; }
  .featured-details { padding-inline: 23px; }
  .featured-details .details-content { display: block; }
  .case-details { scroll-margin-top: 90px; }
  .case-details > summary { font-size: 11px; }
  .details-content > p { font-size: 11px; }
  .case-grid { grid-template-columns: 1fr; gap: 16px; margin-top: 16px; }
  .case-card { padding: 24px 23px 3px; border-radius: 13px; }
  .case-card h3 { font-size: 25px; }
  .compact-flow { gap: 7px; padding: 17px 12px; margin-top: 21px; }
  .figure-note { font-size: 9px; }
  .approach-band { margin-top: 0; }
  .approach-steps { grid-template-columns: 1fr 1fr; gap: 28px 23px; margin-top: 29px; }
  .approach-steps > li:not(:last-child)::before { display: none; }
  .approach-steps > li:nth-child(odd)::before { display: block; right: -23px; }
  .approach-steps h3 { font-size: 14px; margin-top: 12px; }
  .approach-steps p { font-size: 10px; line-height: 1.9; }
  .step-number { width: 28px; height: 28px; font-size: 9px; }
  .approach-steps > li::before { top: 14px; }
  .tools-grid { grid-template-columns: 1fr; gap: 28px; }
  .tool-card { padding-top: 21px; }
  .tool-copy h3 { font-size: 17px; }
  .tool-copy > p { font-size: 11px; }
  .tool-copy > .text-link { font-size: 11px; }
  .tool-image, .task-example { height: 235px; margin-top: 10px; }
  .task-example { padding: 19px 21px; }
  .task-example-title { gap: 11px; }
  .example-label { display: inline; }
  .contact-section { display: block; padding-block: 37px 43px; margin-top: 0; }
  .contact-copy h2 { font-size: 34px; }
  .contact-copy > p:not(.eyebrow) { font-size: 12px; margin-top: 15px; }
  .contact-prompts { font-size: 9px; gap: 13px; margin-top: 19px; }
  .contact-options { margin-top: 27px; padding: 23px 23px 16px; }
  .contact-options strong { font-size: 18px; }
  .contact-email > .icon { width: 21px; height: 21px; }
  .copy-wechat { font-size: 10px; min-height: 44px; }
  .copy-status { font-size: 9px; }
  .site-footer { padding-block: 23px; }
  .footer-top { gap: 6px 12px; }
  .footer-top > p { order: 3; width: 100%; font-size: 9px; }
  .footer-brand { font-size: 14px; }
  .footer-bottom { margin-top: 15px; font-size: 8px; }
  .footer-bottom > div { gap: 4px 14px; }
}

@media (max-width: 359px) {
  .wrap { width: calc(100% - 36px); }
  .brand > span { font-size: 15px; }
  .brand img { width: 27px; height: 27px; }
  .brand small { font-size: 7px; }
  .entry-menu > summary { padding-inline: 8px; }
  .header-menus { gap: 3px; }
  .hero-actions { gap: 9px; }
  .hero-actions .button { font-size: 10px; gap: 9px; padding-inline: 11px; }
  .hero-actions .text-link { font-size: 10px; gap: 8px; }
  .scenario-lab { padding-inline: 15px; }
  .lab-heading { font-size: 8px; }
  .scene-question h2 { font-size: 17px; }
  .scene-flow li { gap: 8px; }
  .scene-flow strong { font-size: 12px; }
  .scene-flow p { font-size: 9px; }
  .method-tag { font-size: 8px; padding-inline: 4px; }
  .section-heading h2 { font-size: 23px; }
  .solution-title h3 { font-size: 14px; }
  .case-copy, .case-card { padding-inline: 21px; }
  .case-copy h3, .case-card h3 { font-size: 24px; }
  .product-visual { padding-inline: 21px; }
  .product-flow li { gap: 12px; }
  .task-example { padding-inline: 17px; }
  .example-label { display: none; }
  .contact-options { padding-inline: 20px; }
  .contact-options strong { font-size: 16px; }
  .contact-email { gap: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* Questions and contact actions complete the path from a scene to a conversation. */
.cooperation-faq { display: grid; grid-template-columns: 1fr 2fr; gap: 48px; border-top: 1px solid var(--line); margin-top: 40px; padding-top: 32px; }
.cooperation-faq > h3 { font: 500 23px/1.5 var(--display); }
.faq-items details { border-bottom: 1px solid var(--line); }
.faq-items summary { display: flex; align-items: center; justify-content: space-between; gap: 14px; min-height: 56px; padding: 12px 0; list-style: none; font-size: 14px; font-weight: 550; cursor: pointer; }
.faq-items summary::-webkit-details-marker { display: none; }
.faq-items summary > span { flex: none; color: var(--accent); }
.faq-items details[open] summary > span { transform: rotate(45deg); }
.faq-items p { padding: 0 24px 20px 0; color: var(--muted); font-size: 13px; line-height: 1.95; }
.contact-topic { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding-bottom: 16px; margin-bottom: 20px; border-bottom: 1px solid #d0dee7; }
.contact-topic[hidden] { display: none; }
.contact-topic strong { font-size: 15px; }
.contact-topic button, .copy-email { flex: none; border: 1px solid #b5cad7; border-radius: 6px; min-height: 44px; padding: 8px 12px; background: #f8fbfd; font-size: 12px; color: var(--accent); }
.email-tools { display: flex; align-items: center; gap: 14px; padding-top: 14px; }
.email-tools p { font-size: 11px; line-height: 1.8; color: var(--muted); overflow-wrap: anywhere; }
#email-value { user-select: all; }
@media (max-width: 600px) {
  .cooperation-faq { grid-template-columns: 1fr; gap: 16px; margin-top: 28px; padding-top: 24px; }
  .cooperation-faq > h3 { font-size: 22px; }
  .faq-items summary { font-size: 13px; }
  .contact-topic strong { font-size: 14px; }
  .email-tools { align-items: flex-start; gap: 12px; }
}

.agent-task-preview { color: var(--muted); font-size: 11px; line-height: 1.9; padding-bottom: 14px; }
.office-entry { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 18px; padding: 24px; margin-top: 22px; border-left: 3px solid #93b6ca; background: #eaf1f6; border-radius: 0 10px 10px 0; }
.office-entry strong { font-weight: 550; font-size: 16px; }
.office-entry p { font-size: 12px; color: var(--muted); margin-top: 5px; }
.office-example-links { display: flex; flex-wrap: wrap; gap: 0 20px; margin-top: 8px; }
.office-example-links a { display: inline-flex; align-items: center; min-height: 44px; font-size: 12px; color: var(--accent); }
.office-example-links a:hover { text-decoration: underline; text-underline-offset: 4px; }

/* Business platforms share the site's established project presentation. */
.platform-list { padding-bottom: 54px; }
.platform-card { scroll-margin-top: 110px; }
.platform-card .case-copy h2 { font: 500 30px/1.5 var(--display); letter-spacing: -.5px; }
.platform-visual { min-width: 0; padding: 30px 36px; background: #edf3f6; }
.platform-modules { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; margin-block: 24px; }
.platform-modules > div { padding: 18px; background: white; border: 1px solid var(--line); border-radius: 8px; }
.platform-modules span { font-size: 10px; color: var(--muted); }
.platform-modules strong { display: block; font-size: 14px; font-weight: 550; margin-top: 6px; }
.platform-modules p { font-size: 11px; color: var(--muted); line-height: 1.9; margin-top: 8px; }
.platform-actions { display: flex; flex-wrap: wrap; gap: 2px 20px; margin-top: 12px; }
.platform-note { font-size: 11px; color: var(--muted); line-height: 1.9; margin-top: 10px; }
.platform-overview { border-top: 1px solid var(--line); }
@media(max-width:900px) { .platform-visual { padding: 25px; }.platform-modules { grid-template-columns: 1fr; gap: 10px; }.platform-modules > div { padding: 13px 16px; }.platform-card .case-copy h2 { font-size: 27px; } }
@media(max-width:600px) { .platform-card { scroll-margin-top: 90px; }.platform-visual { padding: 24px; }.platform-list { padding-bottom: 34px; } }

.analytics-note { margin-top: 16px; font-size: 12px; color: var(--muted); }
.analytics-note summary { cursor: pointer; width: fit-content; padding-block: 8px; }
.analytics-note p { max-width: 720px; line-height: 1.8; padding-bottom: 12px; }