:root {
    --blue: #3370ff; --blue-hover: #2357d7; --ink: #20262e; --muted: #606a76;
    --green: #147d62; --line: #e4e9ed; --soft: #f5f7f9;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body { margin: 0; color: var(--ink); background: #fff; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; font-size: 16px; line-height: 1.7; letter-spacing: 0; }
body.modal-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
button, .button { cursor: pointer; }
button, a { -webkit-tap-highlight-color: transparent; }
img { display: block; max-width: 100%; }
h1, h2, h3, h4, p { margin: 0; }
h1, h2, h3, h4 { line-height: 1.4; }
button:focus-visible, a:focus-visible { outline: 3px solid var(--blue); outline-offset: 5px; }
[hidden] { display: none !important; }
.container { width: min(1280px, calc(100% - 96px)); margin-inline: auto; }
.lucide { width: 20px; height: 20px; stroke-width: 1.7; flex-shrink: 0; }
.skip-link { position: fixed; top: -70px; left: 20px; padding: 10px 20px; background: #fff; z-index: 200; }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 50; background: #fff; border-bottom: 1px solid var(--line); }
.header-inner { height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 26px; }
.brand { width: 186px; flex-shrink: 0; }
.brand img { width: 100%; height: auto; }
.desktop-nav { display: flex; align-items: center; gap: 28px; font-size: 14px; font-weight: 550; }
.desktop-nav a { white-space: nowrap; transition: color .18s; }
.desktop-nav a:hover, .mobile-nav a:hover { color: var(--blue); }
.header-actions { display: flex; gap: 12px; align-items: center; }
.button { min-height: 48px; padding: 12px 23px; display: inline-flex; align-items: center; justify-content: center; gap: 22px; border: 1px solid transparent; border-radius: 6px; font-size: 15px; font-weight: 600; transition: background .18s, border-color .18s; white-space: nowrap; }
.button-primary { background: var(--blue); color: #fff; }
.button-primary:hover { background: var(--blue-hover); }
.button-secondary { border-color: #cfd7e2; background: #fff; }
.button-secondary:hover { border-color: var(--blue); }
.header-cta { min-height: 42px; padding: 9px 17px; gap: 14px; font-size: 14px; }
.icon-button { width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 6px; display: inline-flex; align-items: center; justify-content: center; color: inherit; background: #fff; }
.icon-button:hover { background: var(--soft); }
.icon-button:disabled { opacity: .35; cursor: default; }
.menu-toggle { display: none; }
.mobile-nav { padding: 8px 24px 20px; border-top: 1px solid var(--line); }
.mobile-nav a { display: block; padding: 10px 0; }
.hero { position: relative; overflow: hidden; background: #f7f9fb; }
.hero-art { position: absolute; width: 100%; height: 100%; object-fit: cover; object-position: center; inset: 0; }
.hero-inner { position: relative; padding-top: 67px; }
.hero-copy { max-width: 610px; }
.identity { display: flex; align-items: center; gap: 10px; font-size: 13px; font-weight: 550; color: #3c5565; }
.identity-dot { width: 7px; height: 7px; background: var(--green); border-radius: 50%; flex-shrink: 0; }
.identity-divider { width: 1px; height: 12px; margin-inline: 3px; background: #aab6c2; }
h1 { font-size: 62px; font-weight: 750; line-height: 1.23; margin-top: 25px; }
h1 span { color: var(--blue); }
.hero-copy > p { margin-top: 24px; max-width: 470px; color: var(--muted); font-size: 17px; line-height: 1.9; }
.hero-actions { display: flex; gap: 14px; margin-top: 30px; }
.hero-foot { margin-top: 61px; padding-block: 20px; border-top: 1px solid #dce3eb; display: flex; justify-content: space-between; gap: 20px; font-size: 13px; color: #626e7b; }
.hero-foot b { font-weight: 400; margin-inline: 17px; color: #9aa6b1; }
.section { padding-block: 88px; }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 40px; margin-bottom: 40px; }
.eyebrow { font-size: 12px; font-weight: 650; color: var(--blue); margin-bottom: 13px; }
h2 { font-size: 32px; font-weight: 700; }
.section-intro { color: var(--muted); font-size: 15px; flex-shrink: 0; max-width: 100%; }
.service-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.service { padding: 30px 32px 0; border-right: 1px solid var(--line); }
.service:first-child { padding-left: 0; }
.service:last-child { padding-right: 0; border-right: 0; }
.service-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.service-icon { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 8px; }
.service-icon .lucide { width: 25px; height: 25px; }
.blue { background: #edf3ff; color: #3370ff; }
.green { background: #eaf5ef; color: var(--green); }
.amber { background: #fff4e5; color: #a86b1a; }
.item-number { font-size: 13px; color: #8b96a3; }
.service h3 { font-size: 23px; margin-bottom: 13px; }
.service > p { font-size: 15px; color: var(--muted); min-height: 78px; }
.service-list { list-style: none; margin: 22px 0 26px; padding: 0; font-size: 14px; line-height: 2.3; }
.service-list li::before { content: ""; width: 5px; height: 5px; display: inline-block; margin: 0 10px 3px 0; background: var(--green); }
.deliverables { border-top: 1px solid var(--line); padding-top: 18px; margin-bottom: 22px; }
.deliverables > span { font-size: 12px; color: #7a8490; }
.deliverables p { font-size: 13px; margin-top: 4px; }
.text-link { display: inline-flex; gap: 14px; align-items: center; color: var(--blue); font-size: 14px; font-weight: 600; }
.text-link:hover { color: var(--blue-hover); }
.workbuddy { background: #f3f7f6; }
.green-text { color: var(--green); }
.external-link { color: var(--green); flex-shrink: 0; }
.capability-strip { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-block: 1px solid #dce5e1; padding-block: 26px; gap: 28px; }
.capability-strip > div { display: flex; align-items: flex-start; gap: 15px; }
.capability-strip > div > .lucide { width: 24px; height: 24px; color: var(--green); margin-top: 5px; }
.capability-strip h3 { font-size: 17px; font-weight: 650; }
.capability-strip h3 span { font-size: 14px; color: var(--muted); margin-left: 7px; font-weight: 400; }
.capability-strip p { font-size: 13px; margin-top: 6px; color: var(--muted); }
.scenario-heading { margin-top: 38px; margin-bottom: 20px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.scenario-heading h3 { font-size: 20px; }
.scenario-heading > span { font-size: 12px; color: var(--green); }
.scenario-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.scenario { background: #fff; border: 1px solid #e0e8e5; border-radius: 8px; overflow: hidden; }
.scenario-visual { height: 210px; position: relative; overflow: hidden; }
.sales-visual { background: #eef3ff; }
.reporting-visual { background: #e8f3ee; }
.knowledge-visual { background: #f1f2f5; }
.visual-label { position: absolute; top: 18px; left: 22px; color: #66778c; font-size: 12px; }
.document-stack { position: absolute; left: 10%; top: 61px; width: 95px; height: 126px; }
.mini-document { position: relative; width: 94px; height: 117px; padding: 14px; border: 1px solid #cad8ef; background: #fff; border-radius: 5px; }
.mini-document > .lucide { color: var(--blue); margin-bottom: 7px; width: 24px; height: 24px; }
.mini-document b { font-size: 12px; display: block; }
.mini-document span { display: block; height: 3px; background: #e1e8f1; margin-top: 6px; }
.mini-document span:last-child { width: 70%; }
.back-document { position: absolute; left: -9px; top: 7px; transform: rotate(-8deg); background: #e0e9fa; }
.visual-flow { position: absolute; top: 115px; left: 45%; color: var(--blue); }
.mini-result { position: absolute; left: 58%; top: 86px; color: #415774; }
.mini-result > .lucide { width: 29px; height: 29px; color: var(--blue); margin-bottom: 8px; }
.mini-result b { display: block; font-size: 14px; }
.mini-result span { font-size: 11px; display: block; margin-top: 4px; }
.report-sheet { position: absolute; top: 56px; left: 9%; width: 61%; height: 132px; border-radius: 5px; background: #fff; border: 1px solid #d0e0d7; padding: 14px 18px; }
.report-sheet-top { display: flex; gap: 7px; align-items: center; color: var(--green); font-size: 12px; }
.bar-chart { height: 68px; display: flex; gap: 12px; align-items: flex-end; border-bottom: 1px solid #dbe5df; padding: 0 8px; margin-top: 8px; }
.bar-chart span { width: 22px; height: 35%; background: #b3dccc; border-radius: 2px 2px 0 0; }
.bar-chart span:nth-child(2) { height: 60%; }
.bar-chart span:nth-child(3) { height: 47%; }
.bar-chart span:nth-child(4) { height: 78%; background: #38a687; }
.bar-chart span:nth-child(5) { height: 94%; background: #167c62; }
.report-note { position: absolute; right: 6%; top: 106px; padding: 12px; background: #fff; border: 1px solid #c7ded2; border-radius: 5px; font-size: 12px; color: var(--green); }
.report-note .lucide { display: inline; width: 15px; height: 15px; vertical-align: -3px; margin-right: 6px; }
.report-note span { display: block; font-size: 10px; margin-top: 4px; color: var(--muted); }
.knowledge-search { position: absolute; top: 58px; left: 9%; width: 82%; display: flex; align-items: center; gap: 10px; background: #fff; border: 1px solid #d9dfe8; padding: 10px 12px; border-radius: 5px; font-size: 12px; color: #7c8590; }
.knowledge-search > .lucide { width: 16px; height: 16px; color: var(--blue); }
.knowledge-result { position: absolute; top: 110px; left: 12%; width: 76%; display: flex; align-items: center; gap: 10px; color: #5a6b80; }
.knowledge-result > .lucide { color: var(--blue); }
.knowledge-result > .lucide:last-child { margin-left: auto; color: var(--green); width: 16px; }
.knowledge-result b { font-size: 12px; }
.knowledge-result span { display: block; font-size: 10px; color: #7b8794; }
.knowledge-tags { position: absolute; left: 12%; top: 163px; display: flex; gap: 13px; font-size: 10px; color: #788596; }
.knowledge-tags span { border-bottom: 1px solid #c8d1de; padding-bottom: 2px; }
.scenario-body { padding: 24px; }
.scenario-body h4 { font-size: 19px; margin-bottom: 20px; }
.scenario-body dl { margin: 0; }
.scenario-body dl > div { display: flex; align-items: baseline; gap: 15px; margin-top: 12px; font-size: 13px; }
.scenario-body dt { color: #8a939e; flex: 0 0 26px; }
.scenario-body dd { margin: 0; color: #596471; }
.scenario-note { color: #78847c; font-size: 12px; margin-top: 22px; }
.case-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.case-preview { display: block; width: 100%; aspect-ratio: 16 / 9; border: 1px solid #e6ebf1; padding: 0; border-radius: 8px; overflow: hidden; background: var(--soft); position: relative; cursor: pointer; }
.case-preview > img { width: 100%; height: 100%; object-fit: contain; transition: transform .3s; }
.case-preview:hover > img { transform: scale(1.025); }
.preview-icon { position: absolute; right: 12px; bottom: 12px; width: 32px; height: 32px; display: grid; place-items: center; background: #fff; color: var(--blue); border-radius: 5px; box-shadow: 0 2px 8px #17273618; }
.preview-icon > .lucide { width: 17px; height: 17px; }
.case .case-category { font-size: 12px; color: var(--blue); margin-top: 22px; margin-bottom: 7px; }
.case h3 { font-size: 22px; margin-bottom: 10px; }
.case > p:last-child { font-size: 14px; color: var(--muted); }
.process { border-block: 1px solid var(--line); background: #f8f9fa; }
.process-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px; list-style: none; padding: 0; margin: 0; }
.process-list li { border-top: 1px solid #cbd5df; padding-top: 22px; position: relative; }
.process-list li::before { content: ""; width: 7px; height: 7px; position: absolute; top: -4px; background: var(--blue); }
.process-list li > span { color: var(--blue); font-size: 13px; }
.process-list h3 { font-size: 19px; margin: 12px 0 10px; }
.process-list p { color: var(--muted); font-size: 14px; max-width: 240px; }
.about-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 80px; }
.about-lead { color: var(--muted); font-size: 18px; margin-top: 10px; }
.developer-label { margin-top: 28px; display: inline-flex; align-items: center; gap: 9px; font-size: 13px; color: var(--green); }
.about-copy > p { color: var(--muted); font-size: 16px; line-height: 1.9; }
.about-strengths { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; border-top: 1px solid var(--line); margin-top: 28px; padding-top: 25px; }
.about-strengths .lucide { color: var(--blue); margin-bottom: 10px; }
.about-strengths h3 { font-size: 15px; margin-bottom: 6px; }
.about-strengths p { font-size: 12px; color: var(--muted); }
.consultation { background: #202a2b; color: #fff; padding-block: 60px; }
.consultation-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.consultation .eyebrow { color: #91c9b6; }
.consultation h2 { font-size: 31px; }
.consultation p:not(.eyebrow) { font-size: 14px; color: #becacc; margin-top: 12px; }
.consultation-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 17px; }
.email-link { font-size: 13px; display: inline-flex; align-items: center; gap: 10px; color: #d0d9d9; }
.email-link .lucide { width: 15px; height: 15px; }
.site-footer { padding-block: 28px; color: #77818b; font-size: 12px; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 25px; }
.footer-brand { font-weight: 700; font-size: 17px; color: #303a45; display: flex; align-items: center; gap: 10px; margin-right: auto; }
.footer-brand span { font-size: 9px; color: var(--blue); }
.footer-inner > a:last-child { display: inline-flex; gap: 6px; align-items: center; }
.footer-inner .lucide { width: 14px; height: 14px; }
.image-modal { width: min(1200px, 94vw); max-width: 94vw; max-height: 94dvh; padding: 0; border: 1px solid #3f4c59; border-radius: 8px; color: #fff; background: #17202a; overflow: hidden; }
.image-modal::backdrop { background: #0d131de6; }
.modal-shell { display: flex; flex-direction: column; max-height: 92dvh; }
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 10px 18px; gap: 15px; }
.modal-header h2 { font-size: 17px; }
.image-modal .icon-button { background: transparent; color: #fff; border-color: #506073; flex-shrink: 0; }
.image-modal .icon-button:hover { background: #33404e; }
.modal-viewport { overflow: auto; min-height: 0; max-height: calc(92dvh - 138px); overscroll-behavior: contain; }
.modal-viewport img { max-width: none; width: 100%; height: auto; margin-inline: auto; }
.modal-toolbar { padding: 10px; display: flex; align-items: center; justify-content: center; gap: 15px; }
.modal-toolbar output { width: 55px; text-align: center; font-size: 14px; font-variant-numeric: tabular-nums; }
@media (min-width: 1600px) {
    .hero-inner { padding-top: 78px; }
    .hero-foot { margin-top: 78px; }
}
@media (max-width: 1150px) {
    .container { width: calc(100% - 64px); }
    .desktop-nav { gap: 19px; font-size: 13px; }
    .brand { width: 160px; }
    .header-inner { gap: 20px; }
    .hero-copy { max-width: 51%; }
    h1 { font-size: 52px; }
    .hero-copy > p { font-size: 16px; }
    h2 { font-size: 28px; }
    .section-heading { gap: 28px; }
    .section-intro { font-size: 14px; }
    .service { padding-inline: 23px; }
    .service h3 { font-size: 21px; }
    .service > p { min-height: 100px; }
    .external-link { font-size: 12px; }
    .scenario-grid { gap: 16px; }
    .scenario-body { padding: 20px; }
    .scenario-body h4 { font-size: 18px; }
    .scenario-visual { height: 200px; }
    .mini-result { left: 59%; }
    .mini-result span { max-width: 76px; font-size: 10px; }
    .visual-flow { left: 46%; }
    .about-grid { gap: 45px; }
}
@media (max-width: 960px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: inline-flex; }
    .header-inner { height: 76px; }
    html { scroll-padding-top: 90px; }
    .hero-inner { padding-top: 46px; }
    .hero-copy { max-width: 55%; }
    h1 { font-size: 44px; }
    .identity { font-size: 11px; gap: 6px; }
    .hero-copy > p { font-size: 15px; }
    .hero-art { object-position: 53% center; }
    .hero-foot { margin-top: 44px; }
    .section { padding-block: 64px; }
    .section-heading { flex-wrap: wrap; gap: 16px; margin-bottom: 30px; }
    .desktop-break { display: none; }
    .section-intro { font-size: 14px; }
    .service { padding-inline: 18px; }
    .service h3 { font-size: 19px; }
    .service > p { font-size: 14px; min-height: 118px; }
    .service-list { font-size: 12px; }
    .deliverables p { font-size: 12px; min-height: 42px; }
    .capability-strip { gap: 20px; }
    .capability-strip > div { gap: 9px; }
    .capability-strip h3 { font-size: 15px; }
    .capability-strip h3 span { display: block; margin-left: 0; }
    .capability-strip p { font-size: 12px; }
    .scenario-grid { grid-template-columns: 1fr; gap: 18px; }
    .scenario { display: grid; grid-template-columns: 42% 58%; }
    .scenario-visual { height: 100%; min-height: 244px; }
    .scenario-body { padding: 24px; }
    .scenario-body h4 { font-size: 20px; }
    .scenario-body dl > div { font-size: 14px; }
    .mini-result span { max-width: none; }
    .case-grid { gap: 20px; }
    .case h3 { font-size: 19px; }
    .process-list { gap: 22px; }
    .process-list h3 { font-size: 18px; }
    .process-list p { font-size: 13px; }
    .about-grid { grid-template-columns: 1fr; gap: 30px; }
    .about-strengths p { font-size: 13px; }
    .consultation-inner { align-items: flex-start; flex-direction: column; gap: 25px; }
    .consultation-actions { flex-direction: row; align-items: center; gap: 24px; }
    .footer-brand { flex-basis: 100%; }
}
@media (max-width: 600px) {
    .container { width: calc(100% - 40px); }
    .header-inner { height: 68px; gap: 10px; }
    .brand { width: 139px; }
    .header-actions { gap: 8px; }
    .header-cta { min-height: 38px; font-size: 12px; padding: 7px 12px; }
    .header-cta .lucide { display: none; }
    .menu-toggle { width: 38px; height: 38px; }
    .hero-inner { padding-top: 29px; }
    .hero-copy { max-width: none; }
    .identity { font-size: 11px; gap: 7px; }
    h1 { font-size: 39px; margin-top: 20px; line-height: 1.25; }
    .hero-copy > p { font-size: 14px; margin-top: 18px; max-width: 380px; line-height: 1.8; }
    .hero-actions { margin-top: 22px; gap: 12px; }
    .hero-actions .button { min-height: 43px; font-size: 13px; padding: 9px 16px; gap: 17px; }
    /* 移动端插画置于正文下方，避免图形与标题重叠。 */
    .hero-art { top: auto; bottom: 48px; height: 180px; width: 100%; object-fit: cover; object-position: right center; }
    .hero-foot { margin-top: 201px; padding-block: 13px; font-size: 12px; }
    .hero-foot > span:last-child { display: none; }
    .section { padding-block: 50px; }
    .eyebrow { font-size: 10px; margin-bottom: 12px; }
    h2 { font-size: 26px; line-height: 1.45; }
    .section-heading { gap: 15px; margin-bottom: 28px; }
    .section-intro { font-size: 14px; }
    .service-grid { grid-template-columns: 1fr; }
    .service, .service:first-child, .service:last-child { padding: 27px 0; border-right: 0; border-bottom: 1px solid var(--line); }
    .service:last-child { padding-bottom: 0; border-bottom: 0; }
    .service-top { margin-bottom: 19px; }
    .service h3 { font-size: 23px; }
    .service > p { min-height: 0; font-size: 15px; }
    .service-list { font-size: 14px; margin-block: 18px; }
    .deliverables { padding-top: 13px; margin-bottom: 16px; }
    .deliverables p { font-size: 13px; min-height: 0; }
    .capability-strip { grid-template-columns: 1fr; gap: 23px; padding-block: 25px; }
    .capability-strip > div { gap: 16px; }
    .capability-strip h3 { font-size: 17px; }
    .capability-strip h3 span { display: inline; margin-left: 6px; }
    .capability-strip p { font-size: 13px; }
    .scenario-heading { margin-top: 30px; }
    .scenario-heading h3 { font-size: 18px; }
    .scenario-heading > span { font-size: 10px; }
    .scenario { display: block; }
    .scenario-visual { height: 200px; min-height: 0; }
    .scenario-body { padding: 22px; }
    .scenario-body dl > div { font-size: 13px; gap: 12px; }
    .mini-result { left: 60%; }
    .mini-result span { font-size: 11px; }
    .visual-flow { left: 47%; }
    .case-grid { grid-template-columns: 1fr; gap: 32px; }
    .case h3 { font-size: 22px; }
    .case .case-category { margin-top: 17px; }
    .process-list { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 23px; }
    .process-list h3 { font-size: 17px; }
    .process-list p { font-size: 13px; }
    .about-strengths { gap: 12px; }
    .about-strengths h3 { font-size: 14px; }
    .about-strengths p { font-size: 12px; }
    .about-copy > p { font-size: 15px; }
    .consultation { padding-block: 44px; }
    .consultation h2 { font-size: 25px; }
    .consultation-actions { flex-direction: column; align-items: flex-start; gap: 18px; }
    .site-footer { padding-block: 25px; }
    .footer-inner { gap: 12px 20px; font-size: 11px; }
    .footer-brand { margin-bottom: 5px; }
    .modal-header { padding: 10px; }
    .modal-header h2 { font-size: 14px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; } }